Image forming device, cartridge, and storage device installed on cartridge

FIELD: physics.

SUBSTANCE: image forming device has a first image forming mode to form an image on an image transfer element using developer in a first fixed state of image forming, and a second image forming mode to form an image on an image transfer element using developer in a second state of image forming, which is different from said first fixed state of image forming and is predefined so as to ensure developer consumption in the second image forming mode lower than that in the first image forming mode for the same image. At that, said device includes a storage to store information on used capacity of the image transfer element, an image processing controller to process the image on the basis of size of concentrated pixel area in the image information when the second image forming mode is set, and a control means to change the second image forming state in the second image forming mode depending on results of the processing carried out by the image processing controller and on the information stored in the storage. The cartridge contains an image transfer element. The storage includes the first storing area to store information on used capacity of the image transfer element, which is used in combination with the image information depending on results of the processing carried out by the image processing controller in order to change the second state of image forming. At that, the information for changing the second state of image forming is the information, which is used in the second mode of image forming, but not in the first mode of image forming.

EFFECT: provision of image forming device and cartridge capable to reduce consumption of developer while keeping stable image peculiarities regardless used capacity of image transfer element; provision of storage device to be installed on cartridge.

31 cl, 32 dwg

 

The technical field to which the invention relates.

The present invention relates to a device for the formation of images, in particular to the forming device of the image electrophotographic type, such as a laser printer and the like, the Present invention also relates to a cartridge for it and the storage device be installed on the cartridge.

The level of technology

Description will be given with reference to the conventional electrophotographic device imaging, for example, a laser printer.

Conventional electrophotographic device imaging forms an electrostatic latent image by irradiating the electrophotographic photosensitive element is uniformly charged by means of charging, the light corresponding to the image information and visualization of the electrostatic latent image as image by filing a developer (hereinafter referred to as "toner") as a recording material by using the developer. In addition, the toner image is transferred from the photosensitive element on the recording paper as a recording medium, and the recording paper P holding the toner supplied to the fixation device so as not to damage the toner image, and this image is then subjected to fixing modestiam heat and pressure fixation device for recording and output as a permanent image on the recording paper. A means of processing the attached toner container as part containing the developer in which the toner. The toner consumed in the image formation. In many cases, a toner container, a means of processing a photosensitive element, means for charging etc. together form a process cartridge (hereinafter referred to as "cartridge"). When the toner is consumed, the user can again form an image by replacing the cartridge with a new one.

The cartridge is a predetermined amount of toner, depending on the volume of the container. Accordingly, the number of sheets printed by the user, generally related to the amount of toner. Users who save toner, reducing the amount of toner used to print more sheets, is becoming more. In addition, it becomes more and more laser printers with this mode of imaging, for example, low consumption (toner)which can automatically reduce the amount of consumption of toner, or draft mode, in which printing is carried out by converting the image data to be printed, the image data is low-resolution image data with a reduced number of levels of gradation or image data with a reduced density of the image.

As a means to decrease the amount of supplies on the study of toner you can use the tool to change the number of laser light, etc. By changing the contrast of the developer or source of laser light latent image formed on a photosensitive element is changed. As a result, it is possible to reduce the coating of toner during development.

However, when the amount of consumption of toner is reduced only at the expense of contrast processing or the amount of laser light, the image of a thin line or symbol has a very small line width, which, in some cases, provides a low image quality even under the condition that the change of image quality to some extent, less visible compared to a pure black image having a large area.

For this reason, as a means to decrease the amount of consumption of toner, while ensuring the line width, is the way management framework according to which the image formed by the binary image is printed with the original density, but the amount of consumption of toner is reduced in the inner area of the image to reduce the amount of consumption of toner, while the line width (see, for example, Japanese laid patent application No. Hei 9-085993). In particular, as shown in figure 3, the control method provides for processing of the image, in which the original image (image data) 301, by which ASEE print changes to the smoothed image 302, in which the master site as an area of concentrated pixel like a pure black image is printed with the original density, but the inner part is equipped distributed empty dots that are not printed or grayscale image 303 in which the number of laser radiation or switching period of the laser varies from point to point.

Here, this mode of imaging to suppress coverage of the toner by changing the amount of radiation or period of radiation (or time radiation) laser for each point of the image separately is called the "mode of low consumption (toner)".

However, this traditional way of managing the image is associated with the following problems.

According to the above described method of image processing in the mode of low consumption of toner, which has traditionally been used, the master plot of land concentrated pixels of the resulting image is printed with the original density and the image is converted to a smoothed image or a grayscale image in the inner area (Central area) to decrease the amount of consumption of toner. In this case, the method of processing image uniformly adapted to all the images except for the m images in the master section. The proportion between the template smoothed image or pattern halftone image is switched in accordance with the circumstances of use, thanks to which it becomes possible to provide the mode of low consumption, which supports the features of the image.

However, in the case of the implementation of low consumption with the smoothed image, when the amount of consumption of toner to be reduced to a greater extent compared with the traditional mode of low consumption, there is a problem, consisting in the fact that the area is empty of points is very noticeable, resulting in an image that originally should be pure black image, becomes a net image.

In addition, in the case of the implementation of the low spending of the halftone image obtained by changing the time of radiation or the amount of light emitted laser scanning, there is a problem, consisting in the fact that the mode of low consumption to a greater extent influenced by changes in the durability of the photosensitive layer of the photosensitive element. In particular, in relation to conventional laser light in the case where the halftone processing is not performed, essentially, there is no influence of changes in sensitivity due to wear or abrasion of the photosensitive what about the layer, caused by long-term use of the photosensitive element. However, with respect to laser light, which has changed the time of radiation or the amount of emitted light, the sensitivity of the photosensitive element is reduced, since the photosensitive layer becomes thinner with the development of changes to the durability of the photosensitive layer, i.e. the wear or abrasion of the photosensitive element. The result is a large decrease in the density and the deterioration of the line width.

In addition, you can set the density sensor to detect changes in sensitivity of the photosensitive element or the sensor surface potential to the photosensitive element was changing the timing of the radiation or the amount of the emitted light on the basis of the detection sensor and, thus, creating a grayscale image. However, the installation of sensors associated with the problem of the cost of implementing schemes for detection of the above-mentioned sensors and the problem relating to provide mounting space for the installation of sensors.

In addition, in the above template, the difference in the image area, for example, pure black image or line width as a traditional management tool image, the amount of consumption of toner required to maintain the quality of the image, R is sliczna due to differences in the image area in the case of response, when mode is low spending with the smoothed image, so you need to sacrifice a degree of decrease in the value of consumption of toner when the amount of consumption of toner is uniformly reduced, irrespective of the area of the image.

The invention

To solve the above problems was made by the present invention.

The present invention is the provision of a device of image formation and toner cartridge, which can reduce the amount of consumption of developer, at the same time maintaining stable characteristics of the image regardless of the volume element, the image transfer.

Another objective of the present invention is the provision of a storage device to be installed on the cartridge.

According to the present invention provides a device for the formation of images having a first mode of image formation for forming an image on the transfer element of the image using a developer in the first predetermined state of image formation and the second mode of image formation for forming an image on the transfer element of the image using the developer in the second state of image formation, which is different from the first predetermined condition is Oia imaging and is set so that the magnitude of the consumption of the developer in relation to the identical image in the second mode of forming the image is less than in the first mode of image formation, the device contains

a storage medium for storing information about the volume element of the image transfer and

management tool for changing the second state of image formation in the second mode of forming images based on the information stored in the storage medium.

According to the present invention also provides a cartridge for installation with the possibility to detach the device forming the image having a first mode of image formation for forming an image on the transfer element of the image using a developer in the first predetermined state of image formation and the second mode of image formation for forming an image on the transfer element of the image using the developer in the second state of image formation, which is different from the first predetermined state of image formation, and is set so that the amount of consumption of developer in relation to the identical image in the second mode of forming the image is less than in the first mode imaging, CT the ridge contains

item image transfer and

a storage medium for storing information about the ink cartridge, and storage medium has a first storage area for storing information on the amount of usage of an image transfer for changing the second state of image formation.

According to the present invention also provides a storage device to be installed on the cartridge that you want to install to removable device imaging, including the item image transfer and having a first mode of image formation for forming an image on the transfer element of the image using a developer in the first predetermined state of image formation and the second mode of image formation for forming an image on the transfer element of the image using the developer in the second state of image formation, which is different from the first predetermined state of image formation, and is set so that the amount of consumption of developer in relation to the identical image in the second mode of forming images less than in the first mode of image formation, the storage device has

the first storage area for storing information on the amount of use of the Finance element of the image transfer to change the second state of image formation.

According to the present invention also provides a storage device to be installed on the cartridge that you want to install to removable device imaging, including the item image transfer and having a first mode of image formation for forming an image on the transfer element of the image using a developer in the first predetermined state of image formation and the second mode of image formation for forming an image on the transfer element of the image using the developer in the second state of image formation, which is different from the first predetermined state of image formation, and is set so that the amount of consumption of developer in relation to the identical image in the second mode of forming images less than in the first mode of image formation, the storage device has

the first storage area for storing information on the amount of usage of an image transfer to change the second condition of forming images,

moreover, the information for changing the second state imaging represents information that is used in the second mode of image formation, but did not use the fast in the first mode of forming the image.

These and other objectives, features and advantages of the present invention made it clear from the following description of preferred embodiments of the present invention, shown in conjunction with the attached drawings.

Brief description of drawings

Figure 1 - schematic explanatory view illustrating the image formation according to the present invention.

Figure 2 - schematic explanatory view illustrating the device forming the image according to the present invention.

Figure 3 is a schematic explanatory view illustrating the conventional image processing.

4 is a schematic explanatory view illustrating the image formation according to the present invention.

5 is a schematic explanatory view illustrating image processing according to the present invention.

6 is a schematic explanatory view relating to the image information in the present invention.

7 is a schematic explanatory view relating to the electric potential on the photosensitive element used in the present invention.

Fig(a), 8(b) and 8(c) are graphs showing the relationship between the time of laser radiation and potential exposure on a photosensitive element, between potential exposure and the density of pure black, the CSOs and between potential exposure and line width, accordingly, in the present invention.

Fig.9 is a schematic explanatory view illustrating a measurement sample for measuring the density of pure black and the line width in the present invention.

Figure 10(a) and 10(b) are graphs showing the relationship between the number of received sheets and pure black image, and between the number of received sheets and line width, respectively, in the present invention.

11 is a graph showing the relation between laser radiation and potential exposure on a photosensitive element before and after the sheet feeder in the present invention.

Fig is a graph showing the relationship between the number of received sheets, and potential exposure on a photosensitive element of the present invention.

Fig - table showing the amount of use of the drum and a corresponding reference time of radiation according to a variant of implementation 1.

Fig is a table illustrating the switching time reference radiation based on the amount of use of the drum according to a variant of implementation 1.

Fig(a) and 15(b) are graphs showing the effect under option exercise 1.

Fig is a logical block diagram relating to the management according to a variant of implementation 1.

Fig is a table showing the appropriate time rejected the I laser based on the use of the drum to maintain a constant line width according to a variant implementation 2.

Fig is a table showing the corresponding times of laser radiation for the image lines and pure black image on the basis of the use of the drum under option exercise 2.

Fig(a) and 19(b) are graphs showing the effect under option exercise 2.

Fig is a logical block diagram relating to the control under option exercise 2.

Fig is a graph showing the relationship between the number of received sheets, and potential exposure on a photosensitive drum in the present invention.

Fig is a table showing the times of application of a bias voltage charging and turnover times of the drum in the present invention.

Fig is a graph showing the relationship between the number of received sheets and the use of drum W in the present invention.

Fig is a schematic view showing the storage area in the storage device according to the present invention.

Fig - table showing the use of the drum and a corresponding number of laser light according to a variant implementation 3 of the present invention.

Fig is a table showing a threshold value and a corresponding number of laser light according to a variant implementation 3 of the present invention.

Fig(a) and 27(b) are graphs showing the effect of switching the number of the TV laser light according to a variant implementation 3.

Fig is a logical block diagram relating to the control under option exercise 3.

Fig is a graph showing the relationship between the use of the drum W and contrast processing according to a variant implementation 4.

Fig is a table showing the threshold value, the state of the application of the charging bias and the application state of the shift processing according to a variant implementation 4.

Fig is a logical block diagram relating to the control under option exercise 4.

Preferred embodiments of the inventions

An implementation option 1

Figure 2 shows a schematic view in section of the device forming the image in accordance with the threshold information that meets the present invention.

In figure 2, the device forming the image includes a photosensitive drum 1 as the image transfer, which is prepared by forming a photosensitive material such as OPC or amorphous Si on a cylindrical substrate made of aluminum, Nickel, etc. and is driven by means of drive And, for example, the motor in the clockwise direction indicated by the arrow a, with a predetermined peripheral speed.

The device forming the image additionally comprises means 2 for uniform charging of saracinesca surface of the rotating photosensitive drum 1 to a predetermined polarity and predetermined potential. In this embodiment, uses the device of a contact charging using the charging roller.

The device forming the image additionally includes means 3 display of image information and, in this embodiment, as a means of exposure using laser scanner.

This scanner 3 includes a semiconductor laser, a polygonal mirror, a lens, F-θ and so on and scans and exposes the uniformly charged surface of the photosensitive drum by emitting the laser beam L, which is controlled by on/off depending on the image information supplied from a not shown host device, thereby forming an electrostatic latent image. The processing device 4 constituting the process cartridge, showing the electrostatic latent image on a photosensitive drum 1 as a toner image.

As the method of processing used stepwise development, two-component development, etc. In many cases used a combination of imaging and image processing with the case.

The roller 5 transfer, having an elastic layer, as part of the contact charging like a rotating element, is brought into contact with the photosensitive Barbano is 1 under pressure for forming between them plot N transmission compression and is driven by means of the actuator, for example, the motor, in a direction counterclockwise as indicated by the arrow b, with a predetermined peripheral speed.

Toner image formed on the photosensitive drum 1 sequentially electrostatically transferred onto the recording material P to be written (material receiving transfer), which is available from the section of the paper to plot N transmission compression.

The recording material P filed from the section of the paper, for example, section 7 of the manual feed paper or section 14 of the cassette paper feed being placed in emergency condition sensor 10 of the provisional filing, served on a plot of N compression transfer (section imaging) through the registration rollers 11, the registration sensor 12 and the guide 13 pre-migration.

The recording material P is fed to the plot of N transmission compression created between the photosensitive drum 1 and roller 5 transfer synchronously with the toner image formed on the photosensitive drum 1 by the registration sensor 12.

In addition, to solve double-feed, consisting in the fact that the set of sheets of material record in error is filed simultaneously with the filing of the recording material P on the section of the paper, placed in the separation rollers (8, 15), etc. of the recording Material P that has passed through the area N JUA the Oia transfer, where he receives the toner image, is separated from the surface of the photosensitive drum and is fed to the device 18 fixation through the passage 9 to the sheet. The device 18 of the fixation used in this embodiment is a locking device type film heating, consisting of a pair of pressure rollers, comprising a block 18a of the heating film and the pressure roller 18b. The recording material P carrying the toner image, proslejivaetsya and served in a plot of compression fixation TN, which is a plot of contact pressure between the block 18a of the heating film and the pressure roller 18b and is subjected to heat and pressure, due to which the toner image is fixed on the recording material, becoming a permanent image.

The recording material P, on which the fixed toner image is directed by rollers 19 ejection to the ejection port (tray) 16 ejection face up or port (tray) 17 ejection face down.

On the other hand, the surface of the photosensitive drum, when subjected to transfer of the toner image on the recording material P, is cleaned by removing residual toner transfer device 6 cartridge cleaning process, and thus repeatedly subjected to image formation. In this embodiment, the cleaning device 6 is the fast blade cleaning device, having a cleaning blade 6A.

Now will explain in detail the controller and the process cartridge of the device forming the image according to the present invention with reference to figure 1.

Electrophotographic device of image formation (hereinafter referred to simply as "main unit (device)")used in this embodiment is a laser printer that receives image signals from the host computer and outputs the signals visualizando image. A device of this type, in which the consumable items, for example, electrophotographic photosensitive member, a tool developer and the developer (toner) jointly supported as a process cartridge, which is installed with the possibility of disconnection in the main unit of the device.

According to figure 1, the controller 101 of the device forming the image includes a CPU 103 (main unit) as a Central processing unit and calculations for operations of the image forming main unit, the controller 104 I / o for communication with the storage device mounted on the cartridge, the controller 105 of the image processing to perform image processing result of the image signal, and the controller 106 of the drive laser for management izluchayushchego laser depending on the output signal of the image.

When the cartridge 102 process inserted into the main Assembly of the device and then the power of the main unit, the controller 104 I / o communicates with the device 111 storage installed on the cartridge 102, for various stored values, for example, process status and operational history. The resulting stored values received by the controller 104 I / o arrive at the CPU 103 of the main unit and are processed together with the values stored in the device 124 is stored, and processed as data at the time of formation of the image.

Signal 107 images received from a computer or a scanner that reads the image as a block 100 of the input image signal, is connected to the device forming the image is subjected to image processing, for example, edge processing or adjusting the density, and, thus, is treated as the image signal is able to carry out an optimal image formation.

The CPU 103 of the main unit calculates the optimum value of the process state on the basis of the stored values received from the device 111 storage cartridge and the image signal, which completes the processing of the image, and forms an image at the optimum value of the process state.

In addition, the cartridge 102 of the process is prepared by the joint support of the photosensitive drum 112 as an electrophotographic photosensitive element, a charging roller 113 as charging means for uniformly charging the photosensitive drum 112, device 114 processing, cleaning blade 115 as a cleaning means for cleaning the surface of the photosensitive drum 112 and the container 116 toner waste to accommodate the residual toner removed from the photosensitive drum 112 by the cleaning blade 115, and is installed with the possibility of disconnection in the main unit of the device.

The device 114 processing includes the container 117 toner as the site containing the developer, to accommodate the toner T as a developer, the container 118 developer connected with the container 117 toner, the roller 119 processing as a tool for development, located opposite the photosensitive drum 112, the blade 120 processing as the control element of the developer to adjust the thickness of the toner layer, the inner mixing element 121 of the toner container for stirring the toner T in the container 117 toner to supply the toner T in the container 118 developer and mixing element 122 for supplying the toner T from the container 117 toner on the roller 119 processing.

Also, before you use the cation of the cartridge, item 123 sealing toner glued between the container 117 toner container 118 of the developer.

Item 123 sealing the toner is located so as to prevent leakage of the toner even in case of strong impact, for example, during transportation of the cartridge, and is removed by the user immediately prior to installation of the cartridge in the main unit.

It should be noted that in this embodiment, as the developer used an insulating magnetic one-component toner.

In the storage device 111 used in this embodiment, the stored set values of the image processing, for example, the set values of the bias voltage charging and processing necessary for image formation, and the set value of the light amount of the laser as a means of exposure and amount of uses, for example, the volume of the photosensitive drum and the amount of residual toner. In addition, in the case when the set value of the bias voltage, etc. is switched depending on the history sheet feeder, the device 111 storage is stored, for example, the threshold information or setpoint is switched on the basis of threshold information.

Through the use of the above-described construction, the photosensitive drum is uniformly sarage the Xia charging roller by the application of a bias voltage from the high voltage unit 200 to the charging roller according to the command of the CPU 103, and the surface treatment is subjected to the scanning exposure with the laser light 109, reflected by the mirror 110 and directed to the photosensitive element, which changes depending on the image signal, emitted by a laser scanner 108 as a means of exposure which forms an electrostatic latent image, providing objective information of the image. The electrostatic latent image is rendered as a toner image by imposing on him the toner supply bias voltage from the high voltage unit 200 to the video processing according to the command of the CPU 103 for transferring toner on the photosensitive element through the video processing.

Figure 4 shows a view showing the processing sequence of the image, and the image processing circuit will be described with reference to figure 4.

Elements (means), is identical to that shown in figure 1 are denoted by identical positions.

According to figure 4 to the main unit of the printer connected to computer equipment 100, for example, a personal computer or a host computer that transmits information 107 image, for example, the characters (text) or graphics. Computer equipment sends information 107 images in the main unit of the printer on the signal line 404, and the transmitted information 107 image pic who shall serve on the CPU 103 of the main unit the main unit 403 printer or a volatile storage device (not shown), provided in the CPU 103 for temporary storage of image data during image output.

When we received confirmation that all information 107 image to be printed on the recording sheet, is received, the main unit of the printer starts a printing operation. After starting the print operation information 107 image is supplied to the controller 106 of the drive laser on signal line 408. On the basis of information 107 image, the controller 106 of the drive laser transmits a signal to control the presence/absence of the laser light of the laser scanner 108 via signal lines 410, thereby forming an electrostatic latent image 412 on a photosensitive element 411.

In the image data transmitted from the computer hardware, enter the code of the radiation control for laser scanner for each point that is the maximum resolution of the General Assembly of the printer. For example, the stored binary data as to whether printed or not printed point, or multi-level data that includes data of a halftone gray color. The smallest unit of resolution, i.e. one point, considered to be one pixel.

On the basis of the binary or multilevel data for each pixel, controlled time radiation or the light quantity of the laser scanner 108, wealth is giving what the difference between the potentials of the electrostatic latent image arrives at the photosensitive element to control the coating of toner and the density adjustment, and, thus, provides a good gradation characteristic.

During normal image formation, on the basis of data for each pixel corresponding to the image signal, the CPU 103 controls the amount of radiation (time radiation or quantity of light) of the laser scanner 108, thus a laser radiation, and, thus, the photosensitive element is formed image by forming a latent image.

On the other hand, there is a mode for forming an image in a state of formation of the image, different from that which occurs during normal image formation, i.e. the mode of low consumption of toner for printing with a reduced amount of consumption of toner as compared with the normal image formation to conserve toner. The low consumption of the toner in this embodiment will be described with reference to figure 5. The method of image processing in this embodiment is based on the degree of concentration of pixels to reduce the uneven size of the consumption of toner.

In the selection of the normal imaging mode and the low consumption of toner, it is possible to select the mode using the switch on the operating panel (not shown), is sintered on the device forming the image, or input commands from an external computer (for example, 100, figure 1).

Figure 5 shows a sequence diagram of processing of image formation. Elements (means), is identical to that shown in figure 1 are denoted by identical positions.

According to figure 5 image information sent from an external computer 100 on a laser printer, is supplied to the CPU 103 of the laser printer and stored in the CPU 103 or the storage device (not shown).

The CPU 103 decides whether to implement printing in the normal mode of image formation or in the mode of low consumption of toner in accordance with a command signal from a not shown operation panel or a command from an external computer. When it is determined that the print mode is the normal mode of image formation, image information (original image) 502 is supplied to the controller 106 of the drive laser, as shown by the arrow A. on the other hand, when it is determined that the print mode is a mode with low consumption of toner, image information (original image) 502 is supplied to the controller 105 of the image processing to perform image processing. The controller 105 of the image processing, the original image is analyzed pixel by pixel, resulting in a pixel area is divided into the case of the field concentrated the data of the pixels, having a small size, and the case of the concentrated area of the pixels having a large size. In the case of a concentrated area of pixels of the small size image processing is performed on the template 504 processing, and in the case of areas of concentrated pixels large image processing is performed on the template 505 processing. Upon completion of the image processing with respect to information 506 of the image transmitted to the controller 105 of the image processing, the resulting image information is again sent to the CPU 103 of the main unit of the device and is supplied to the controller 106 of the drive laser as the processed image 507 after image processing, and, thus, is used to control the radiation.

Figure 6(a) and 6(b) shows views illustrating the effect of image processing in the case of reducing the size of the consumption of toner.

Figure 6(a) shows the image 601 small area with a relatively small area of pixels for processing, and the image 602 a large area with a relatively large area of pixels for processing. These images 601 and 602 of the small and large area specified in the information 604 of the image as part of it.

According to Fig.6(a) cell 603 shows one pixel and corresponds to 1/600 inch in the case of a resolution of 600 dpi. Pixel 605 marked "In", this Pix is l, in which dot is printed by the processor, and a blank pixel (which is not marked "In") is a pixel in which a dot is not printed.

In the field of 601 concentrated pixels, which is defined as the image of a small area in the CPU 103 of the image processing, the image processing is carried out according to the template (504 figure 5) image processing to image a small area.

In this embodiment, the area of concentrated pixels large area represents, for example, a concentrated area of pixels having at least 8 pixels in the main scanning direction and at least 8 points in the secondary scanning direction. The area of concentrated pixels small square represents, for example, a concentrated area of pixels having no more than 7 points in the main scanning direction and no more than 7 points in the secondary scanning direction. Identifying areas of concentrated pixels large/small area is not limited to the above, but may accordingly be changed.

In the image information after the image processing shown in fig.6b, the pixels are processed as image 606 small area, are treated as data gradation of tones (shades) H1 (608), which gives a large reduction in density. Next, the pixels processed is passed as the image 607 large area, processed data as the gradation of tones (shades) H2 (609)that most strongly reduces the amount of consumption of toner, at the same time keeping the density. The processing state of the image halftone H2 for image processing a large area is set so that the degree of decrease in density by state of the image processing more than through the processing status of the halftone image H1.

With reference to Fig.7, we describe the control of laser radiation, which is based on the formation of the halftone image by analyzing the binary data used in this embodiment.

In this embodiment, the laser radiation is controlled to generate a potential difference at the site of exposure on a photosensitive element based on the time of radiation.

7 shows a time 701 of the laser radiation required for forming one pixel, depending on the printer resolution. Pure black image is formed due to radiation 703 in the sequence of one period of the formation point. At this time, the potential 705 on the photosensitive element becomes a potential 708 exhibited bright part Vl of the potential 707 dark part Vd of the photosensitive element.

The time of laser radiation per one pixel to the e is a basis required for forming one pixel is called the "reference time radiation 701.

When the time of radiation of the laser is adjusted to 50% of the time reference 701 radiation, the resulting time 702 laser radiation to create a single point is shown in the upper right plot of Fig.7. Pure black image, for which management provides the adjustment time of the laser radiation by 50% from the reference time of the radiation, is formed by continuous radiation 704 during 702 laser radiation. As a result, the potential 706 on a photosensitive element has the potential 709 bright part Vl' on the exposed area of the potential surface 707 Vd of the photosensitive element. Accordingly, the potential of the latent image on the photosensitive element is changed to provide a difference 710 between potential exposure Vl and Vl', thereby changing the amount of consumption of toner. The difference between the potential exposure Vl component and a DC bias voltage of the developer is called contrast processing. Next, the difference between the dark part potential Vd and the direct current component of the bias voltage of the developer is called the contrast of the black.

On Fig(a) shows the relationship between laser radiation and potential exposure (potenziale the light part) V1 on a photosensitive drum (photosensitive element). On the x-axis is the degree (ratio) (%) time of laser radiation to a reference time of radiation. According Fig(a), when the laser radiation is from 100% to 60% from the reference period of the radiation, the change of potential exposure Vl on the photosensitive drum a little. Further, in the case of not more than 60% from the reference period of the radiation, the change is small, but gradually increases with decreasing time of the laser radiation.

On Fig(b) shows the relationship between potential exposure Vl on the photosensitive drum and the density of pure black (image). According Fig(b) the density of pure black is not linear in relation to the potential exposure. In particular, when the potential exposure Vl becomes small (large in absolute value), the density of pure black is sharply reduced. Further, a satisfactory value of the density of pure black is usually not less than 1.4, so it was found that the necessary potential exposure on a photosensitive drum is not less than -200 C. Respectively, during the laser radiation can be reduced to approximately 60% of the time reference radiation, as is evident from Fig(a).

On Fig(C) shows the relationship between potential exposure Vl on the photosensitive drum and the line width (image). Line width in this case is determined izmerenie.vselennaya line, with a width of 4 dots (about 170 μm) at a resolution of 600 dpi by using a microscope. According Fig(C) it was found that the line width of the moderately modified with respect to potential exposure, i.e. gradually decreases with decreasing potential exposure Vl as in the case of the density of pure black. Further, in the line width to 4 points (170 µm)required line width to provide a satisfactory image quality equal to about 165 microns. For this reason, it was found that, to obtain a line width of at least 165 μm potential exposure on a photosensitive drum shall be not less than -180 C. Accordingly, as is clear from Fig(a), the laser radiation can be reduced to about 80% of the time reference radiation.

As shown in the graphs (Fig(a)-8(c)) the density of pure black and line width affect the potential exposure on a photosensitive drum. In particular, the potential exposure is strongly modified with respect to pure black image. In addition, it was found that the potential exposure for the corresponding image (pure black image and the line image) to maintain satisfactory features of the image are different from each other.

Figure 9 shows the image data be confirmed progression p is h pure black and line width. According to Fig.9 image data include, in the Central area, for example, recording sheet size A4, pure black image 901 in the form of a square with sides of 5 cm for measuring the density of pure black, and, next to him, the vertical and horizontal lines of length 5 cm (1180 points) and a width of 4 points for measuring the line width. The density of pure black (the image) is measured using a reflective device density measurement ("RD918 manufactured by Macbeth Corp.) in relation to the square pure black image. In addition, the line width is determined by measuring the respective widths of lines for the vertical and horizontal lines using the microscope and obtain the average of these widths.

In this embodiment, do the experiment on the change in the density of pure black and line width depending on the number of submitted sheets under the conditions that the time of laser radiation to image a large area, for example, pure black image 901 is set equal to 60%, and to image a small area, for example, the line image 902 is set equal to 80%, based on a pre-defined time of the laser radiation in the calculation at one point (time reference radiation).

In this experiment, the process speed is set to 200 mm/s and used the device for the formation of images in which Magnaneraie serve 30 sheets of recording (size A4) in their longitudinal direction.

The toner cartridge contains 1000 g of the toner and allows the sheet feeding quantity 16000 (sheets) when the amount of consumption of toner 60 mg on one sheet. The resolution of the device forming the image is 600 dpi and the time of laser radiation to the same point as the basis for creating a single point in this case is equal to 63 NS. The recording sheets of size A4 are served in periodic mode sheet feeder in which the drive device of the image forming stops after printing of each sheet. In addition, in this embodiment, the image formation is performed in this mode of low consumption of toner by means of time control of laser radiation, areas of concentrated pixels differ so that the area having the size not more than 10 points × 10 points, is defined as a small area, and the area having a size not less than 11 points × 11 points, is defined as a large area.

Measuring the density of pure black and the line width is performed with the use of the sample image shown in Fig.9, and print a sample exercise every 2,000 sheets. In addition, in this experiment, the measurement of the density of pure black and the line width is realized by means of printing performed so as to provide the number of received sheets (as integral value) is 1.5 times more than in the case of Yonago use (without any noticeable decrease consumption of toner), since the time of the laser radiation relative to the reference time of the radiation is set equal to 60% for large area and 80% for small area in order to test the progression of the density of pure black and the line image in the case of low spending.

As a result, as shown in figure 10(a) for the progression of the density of pure black and figure 10(b) for progression line width, it turns out that the density of pure black and the line width decreases with increasing number of submitted sheets. Accordingly, using the toner cartridge upon completion of the continuous printing, measure the time of laser radiation and the potential exposure on a photosensitive drum. As a result, as shown in figure 11, compared with progression at the initial stage of sheet feeder, indicated by the dashed line, the progression on completion of the sheet feeder, marked by a solid line, shows that the potential exposure on a photosensitive drum is increased upon completion of the sheet feeder. In addition, it was found that the potential exposure, essentially unchanged before and after the sheet feeder when the time of radiation of the laser is 100%, but changes dramatically, when the laser radiation is about 60%.

In addition, when the progression of the number of submitted sheets and potential exposure to photoco is responsive drum examine in relation to pure black image, significantly deteriorating, particularly in terms of image quality, as shown in Fig, it turns out that the potential exposure, essentially, varies linearly with the number of received sheets. In other words, this shows that the characteristic of the exposure of the photosensitive drum of the toner cartridge varies dough sheet feeder.

This change characteristics of the exposure of the photosensitive drum is associated with a change in thickness of the photosensitive layer. In addition, since a change in the thickness of the photosensitive layer varies depending on the number of submitted sheets, it was found that the potential exposure in the photosensitive drum is also changed depending on the number of submitted sheets. In addition, the progression of the density of pure black at the time of laser radiation, which significantly deteriorates, as shown in Fig(a), 60% of the time reference radiation varies greatly with decreasing potential exposure on a photosensitive drum. Accordingly, the above changes are specific problems in application mode low consumption using the method of image processing in which the amount of consumption of toner is changed by reducing the time of laser radiation otherwise, h is m in the mode of low consumption, the change of potential exposure on the item image transfer, i.e. the change in the density of pure black image or change the line width are essentially unproblematic level.

Change the thickness of the photosensitive layer varies depending on the number of submitted sheets, as described above. However, the ratio between the number of received sheets, and changing the thickness of the photosensitive layer varies depending on the state of the sheet feeder, i.e. periodic sheet feeding or continuous feeding of the sheets. The fact that changing the thickness of the photosensitive layer caused by wear or abrasion of the surface layer of the drum depends on the number of revolutions of the photosensitive drum and the time of application of a bias voltage charging. For this reason, in this experiment, the sheet feeding is carried out in periodic mode, in which the sheet feeding stops on each sheet. In periodic mode is supplied with bias voltage charging and the number of revolutions of the photosensitive element increases not only during the sheet feeding, but during processing before rotation and post-rotation, thus, the most rapid wear of the photosensitive layer occurs during the test sheet feeder. For example, as shown in Fig when the pot is ciali exposure on a photosensitive element in the case of periodic sheet feeder, when the rate of wear of the photosensitive element above and in case of continuous supply of sheets, when the rate of wear of the photosensitive element is lower compared, it appears that the change of potential exposure with a number of received sheets during the continuous sheet feeding occurs more gradually than in the case of a periodic feed of the sheets.

Accordingly, in relation to the thickness change of the photosensitive layer of the photosensitive element in comparison with the change with the number of received sheets are suitable to use as much use of the photosensitive element (drum), which is the amount of time the application of a bias voltage of the charge multiplied by the relative contribution to the wear of the photosensitive layer, and the time of rotation of the drum multiplied by the relative contribution to the wear of the photosensitive layer. In this embodiment, applies the amount of usage of the photosensitive drum associated with the thickness of the photosensitive layer of the photosensitive element.

The use of the drum is calculated according to the following equation:

W=a×Pt+b×Dt,

where W denotes the use of the drum, Pt denotes the time (period) of the application bias voltage charging, Dt denotes the time (period) of rotation of the photosensitive drum, and a and b oznachaet relative contribution towards changing the thickness of the photosensitive layer.

In this embodiment, a=1 and b=0.5 in. In addition, Pt and Dt are shown in Fig. According pig, in the case of periodic sheet feeder, the time of application (or rotation) is their sum for the time until the rotation of the sheet feeder and after rotation. On the other hand, in the case of continuous sheet feeding, time of application (rotation) is their sum at the time of filing of the plates and the spacing sheet feeder as before rotation and after rotation is not implemented.

On Fig shows the relationship between the number of received sheets and the use of the drum (W) in the cases of periodic sheet feeder (faster wear) and a continuous sheet feeder (lower rate of wear).

In this embodiment mode sheet feeder is used periodic mode sheet feeder.

In this embodiment, depending on the use of the drum of the toner cartridge, a predetermined reference time of radiation (laser radiation) per point of the concentrated pixel change of control, in which the potential exposure on a photosensitive drum to maintain a constant regardless of the number of submitted sheets (use drum).

In this embodiment, the charging time of the laser radiation to anchor the belts of radiation per one point to areas of concentrated pixels large area, for example, a pure black image, and the charging time of the laser radiation to a reference time radiation per point for areas of concentrated pixels in a small area, for example, the line image, set equal to a constant value regardless of the number of submitted sheets (use drum). In particular, the replacement ratio for the area of concentrated pixels large area is 60% and replaceable with respect to the area of concentrated pixels small square is equal to 80%.

Accordingly, in this embodiment, the degree of modulation of the laser (the charging time of the laser radiation) is fixed, for example, 60% or 80% to change the time of the laser radiation in the calculation at one point as the reference value, thereby providing the desired value potential exposure on a photosensitive drum.

In this embodiment, use of the experimental equipment (device imaging and cartridge)used in the above experiment.

In addition, the change in the density of pure black image, depending on the number of submitted sheets (use drum) is particularly large, so in this embodiment, the target is on a purely black image to explore.

First, examine the irradiation time is Oia laser to the support payable for one point (time reference radiation) to ensure that potential exposure -200 In on a photosensitive drum, where pure black image has a density of not less than 1.4 at a corresponding number of received sheets.

Measurement produce every 500 sheets in this embodiment. As a result, the time of laser radiation to the support payable for one point to get potential exposure drum -200 To providing progression density pure black 1.4 or above, shown in Fig. On Fig shows the reference time of radiation per one point in the range of use of the element image transfer from 0 to 121200. Use item image transfer (drum) is not by itself the number of received sheets, as described above, the use of drum (W).

The progression of the density of pure black and line width are examined in the actual test sheet feeder using the reference time of the radiation that ensures the resulting density of pure black is not less than 1.4, shown in Fig. In this test, the sheet feeder defined six modes low expenditure of from 1 to 6, as shown in Fig. In particular, the six low expenditure of from 1 to 6 correspond to the use of the drum (use item image transfer) 0, 37750 (ACC. the number of received sheets 5000), 75500 (ACC. 10000 sheets), 113250 (ACC. 15000 sheets), 15100 (ACC. 20000 sheets) and 181200 (ACC. 25000 sheets), the COO is responsible. The reference time of the radiation is switched according to the following timetable, so that use of the drum (W) was reached appropriate levels. The ratio between the mode of low consumption, levels of use of the drum and support at times of radiation shown in Fig.

As a result, as shown in Fig(a), pure black image shows a stable image density during the test sheet feeder (with respect to the number of received sheets). In relation to the line width, as shown in Fig(b), it is possible to guarantee essentially stable progression, although the width of the line at the last stage increases.

In addition, the threshold information obtained in this embodiment, is stored in the storage device mounted on the cartridge. For example, when the test sheet feeder is in the same condition, measurement speed of the photosensitive layer varies depending on the characteristics of other components in some cases. In such cases, if the control is performed using the threshold information stored in advance in a ROM (not shown) in the CPU of the main unit, the threshold information cannot be changed for each cartridge, so it becomes impossible to make the necessary adjustments depending on the use of the drum. On the other hand, if Orehova information is stored in the storage device of the cartridge, then, by storing the optimal threshold information for the composite element of the cartridge, it becomes possible to perform optimal control, which meets the changing rate of wear of the photosensitive layer depending on the individual characteristics of the cartridge.

The sequence control mode to the low consumption of the toner in this embodiment will be described with reference to figures 1, 14 and 16.

Together with the print image information is transmitted from a computer or other device connected to the printer, making starts running on the printer (1601).

After the CPU 103 decides whether all image information is accepted (1602), the controller 104 I / o reads threshold information from storage devices installed on the cartridge. The CPU 103 compares the use of the drum with the threshold information to select the mode of low consumption in accordance with the threshold information of the use of the drum shown in Fig (1604). After selecting the mode of low consumption is image processing (1605). Then, the controller 105 performs image processing image processing (1614) in accordance with a concentrated pixel defined from the concentrated pixel having a large area (1609), koncentrira the frame of the pixel having a small area (1610), and other pixels, for example, empty points (1611). Then, the CPU 103 decides whether the raw image in relation to the resulting image information (1608). When the completion of processing of the image is confirmed (1606), by the formation of the image. When performing image formation signal for providing commands to change the time of the laser radiation in accordance with the selected mode of low consumption is derived from the CPU 103 to the controller 106 of the drive laser to change the time reference of the laser radiation in the per point depending on the threshold information of the use of the drum (1607), to thereby expose the photosensitive element of the image transfer laser light and, therefore, to carry out image formation (1612).

After this is accomplished through completion of treatment to completion of all print operations (1613).

As described above, by changing the time of laser radiation for the duration of radiation per one point of the concentrated pixel on the basis of the amount of use for use of the drum (the number of submitted sheets for cartridges for the implementation of such a control in which the potential exposure on a photosensitive drum is constant, the independent is IMO from the use of the drum (the number of submitted pages), it becomes possible to realize such a low consumption of toner, which can as much to reduce the amount of consumption of toner, regardless of changes in the thickness of the drum due to the use of the drum, in order to stabilize the characteristics of the image.

In this embodiment, such a control in which the replacement time of the laser radiation to a reference time of radiation per one point of the concentrated pixel large area, for example, a pure black image, and a replacement time of the laser radiation to a reference time radiation per point of concentrated small area pixel respectively set at a constant value regardless of the number of submitted sheets (use drum).

In this embodiment, are switchable low spending 6 types, but it is also possible a corresponding increase in the number of types of modes low consumption to effectively ensure stable features of the image.

In addition, image processing is performed in each mode low expenditure by division of the concentrated pixel having a small area and having a large area. However, it is possible to carry out a more detailed division by assests is of a more thorough analysis.

In this embodiment, in the framework of the area of concentrated pixels, effectively adding a sequence, so as not to perform the operation on the reduction of the consumption of toner.

In the present invention conditions, including processing speed, resolution, time of laser radiation, the use of the drum, its estimated equation, the contribution in relation to the thickness of the photosensitive layer used in the calculation of the ratio, time of application of a bias voltage charging and time of application of a bias voltage of the developer is not limited to be applied in this embodiment.

An implementation option 2

According to a variant of implementation 1, by changing the reference time of the laser radiation in the per point depending on the use of the drum, it has become possible to provide the mode of low consumption, in which the features of the image are stable. In addition, under option exercise 1, it is possible to maintain the density of pure black image on the value of not less than 1.4, regardless of the use of the drum, but there is a tendency (progression) line width using a drum.

In addition, in the case of enlarged line width when using a lot of images, lines or areas shall be concentrated pixels, defined as a line image is concentrated in a relatively narrow area, the management according to a variant implementation 1 focuses on a pure black image. As a result, there is a possibility that appropriate images are essentially isolated from each other, will be connected with each other, causing the collapse of the image.

Accordingly, in this embodiment, the reference time of the laser radiation in the calculation at one point 701 (7) supports permanent, but removable regarding the timing of the laser radiation to a reference time radiation for areas of concentrated pixels large area, for example, a pure black image, and a replacement time of the laser radiation to a reference time radiation for areas of concentrated pixels in a small area, such as line width, are set at different values, and vary depending on the use of the drum (the number of submitted pages).

The time of laser radiation for the corresponding time reference radiation for areas of concentrated pixels large area, for example, a pure black image, has been described and obtained according to a variant of implementation 1, therefore, in this embodiment, its explanation will be omitted. Similarly, the control device forming an image and explanation the ie process cartridge (1), explanation of the processing circuit of the image (figure 4), an explanation of the method of image processing and an explanation of the calculation of usage of the photosensitive drum identical to the corresponding explanations under option exercise 1, and therefore will be omitted.

In this embodiment, receive a corresponding time of laser radiation for areas of concentrated pixels in a small area, for example the line image. As an area of concentrated pixels small area use the image line width of 4 points by analogy with the embodiment 1. To obtain stable image features in the image line width of 4 points you must ensure that the line width of not less than 165 mm. In addition, you must ensure that the potential exposure on a photosensitive drum is not less than -180 In to get the image line width of 4 points with a line width of not less than 165 mm. Accordingly, in this embodiment, during the test sheet feeder (number of received sheets), laser radiation, providing the potential exposure of the drum not less than -180, measured every 5000 sheets. As a result, the time of laser radiation to obtain potential exposure drum -180 To providing progression line width in the range of not less than 165 μm, shown in IG.

Using the time of laser radiation (in relation to the reference time radiation) to provide a line width of at least 165 μm, shown in Fig, assess the progression of the width of the line in the test sheet feeder. Replacement ratio (83%: 32 NS) time of laser radiation to a reference time of radiation to ensure that the line width of not less than 165 μm with the use of drum W=75500 (10,000 pages) is switched at the time when the value of the use of the drum W is 37750 (5000 sheets). In addition, the correspondence between the number of received sheets for switching and time of radiation of the laser shown in Fig together with time of laser radiation, the appropriate use of the drum in a pure black image obtained according to a variant of implementation 1.

As a result, as shown in Fig(a) and 19(b), by implementing a switch, it becomes possible to obtain a satisfactory stable characteristics of the image, regardless of the use of the drum in relation to the progression of the density of pure black image and progression of the density of the line image.

In addition, in this embodiment, the storing threshold information storage device mounted on the cartridge, effectively, as described under option exercise 1.

The sequence control mode is izkuyu consumption of the toner in this embodiment will be described with reference to figure 1, 18 and 20.

Together with the print command, the image information (image signal) is transmitted from a computer or other device connected to the printer, making starts running on the printer (2001).

After the CPU 103 decides whether all image information is accepted (2002), the controller 104 I / o reads threshold information from storage devices installed on the cartridge. The CPU 103 compares the use of the drum with the threshold information to select the mode of low consumption in accordance with the threshold information of the use of the drum shown in Fig (2004). After selecting the mode of low consumption is image processing (2005). Then, the controller 105 performs image processing image processing (2014) in accordance with a concentrated pixel defined from the concentrated pixel having a large area (2009), concentrated pixel having a small area (2010), and other pixels, for example, empty points (2011). Then, the CPU 103 decides whether the raw image in relation to the resulting image information (2008). When the completion of processing of the image is confirmed (2006), by the formation of the image. When performing image formation signal for providing commands to change the time of the laser radiation in accordance with the selected mode of low consumption is derived from the CPU 103 to the controller 106 of the drive laser to change the time reference of the laser radiation in the calculation at one point according to from the threshold information of the use of the drum (2007), to thereby expose the photosensitive element of the image transfer laser light and, therefore, to carry out image formation (2012).

After this is accomplished through completion of treatment to completion of all print operations (2013).

As described above, by changing the interchangeable relationship so that the replacement time of the laser radiation to a reference time of radiation per one point of the concentrated pixel large area, for example, a pure black image, and the extra time relationship of the laser radiation to a reference time radiation per point of concentrated small area pixel are different from each other depending on the number of submitted sheets use drum (use drum), it becomes possible to realize such a low consumption of toner, which can as much to reduce the amount of consumption of toner, regardless of changes in the thickness of the drum due to the use of the drum to stabilize the characteristics of the image.

In this embodiment, are switchable low spending 6 types, but it is also possible a corresponding increase in the number of types of modes low expenditure of effective sustainable features of the image.

In addition, image processing is performed in each mode low expenditure by division of the concentrated pixel having a small area and having a large area. However, it is possible to carry out a more detailed division by implementing a more thorough analysis.

In this embodiment, in the framework of the area of concentrated pixels, effectively adding a sequence, so as not to perform the operation on the reduction of the consumption of toner.

In the present invention, the terms including processing speed, resolution, time of laser radiation, the use of the drum, its estimated equation, the contribution in relation to the thickness of the photosensitive layer used in the calculation of the ratio, time of application of a bias voltage charging and time of application of a bias voltage of the developer is not limited to be applied in this embodiment.

A storage device that is installed on the cartridge used according to implementation options 1 and 2 will be described more specifically with reference to Fig, where a schematic diagram of a storage area 2801 storage device used in this embodiment.

According pig storage area 2801 may, for example, be divided into 2802, the which stores the set values of the process necessary for the formation of the image, the region 2803 for storing history information sheet feeder, which increases depending on the operation of the sheet feeder, and the region 2804, which stores unique information (e.g. serial number) of the cartridge.

Process instructions stored in the field 2801 include values 2805, which are switched during use, and values 2806, which is constant for some cartridges.

In the field 2805 values of the process are stored threshold 2807, for example, switching the number of sheets and the number of revolutions, and switching set values 2808 process.

In addition, there is sufficient storage area, so the area 2803 for storing data of the number of revolutions of the photosensitive drum and the number of submitted sheets, generated through the use of a cartridge can sufficiently store the maximum available values.

Threshold information for use of the drum, according to the options described implementation 1 and 2, is stored in the field 2802 storage (memory), shown in figure 4. At that time, when the drum reaches the threshold information is managed, providing change the time of the laser radiation, is described according to the options exercise 1 and 2.

In addition, as data for calculation use drum (W) you can use the time of application of the charging bias Pt and time, drum rotation time Dt, which is updated and stored in the field 2803 storage device, and the coefficients (ratio of contribution of a and b that are stored in the field 2804 storage device.

By the way, the time of laser radiation corresponding to the threshold information may be stored in the storage area for the given values of process 2808 and used by reading them out at the time when the drum reaches the threshold information.

An implementation option 3

Under option exercise 2 regarding the timing of the laser radiation to a predetermined time reference radiation 701 (Fig.7) per point varies depending on the amount of use of the cartridge, so that the potential EC is the Deposit by the drum is maintained at a constant value regardless of the number of submitted sheets. On the other hand, in this embodiment, the light quantity of the laser light varies depending on the use of the drum of the toner cartridge to maintain the potential exposure of the drum at a constant value regardless of the number of submitted sheets. Under the number of laser light mean energy of laser radiation per unit area (MJ/m2).

Regarding the explanation of the device imaging and process cartridge (figure 1), explanation of the processing circuit of the image (figure 4), explaining the method of processing image (figure 5-12) and an explanation of the calculation of usage of the photosensitive drum, the explanation is identical to the corresponding explanations under option exercise 1 and therefore omitted.

In addition, in this embodiment, the experimental equipment (device imaging and cartridge)used in the above experiment. In addition, in this embodiment, the density of pure black image especially strongly varies depending on the number of submitted sheets (use drum), so that attention is paid to the density of pure black image for evaluation of the effect.

First, in this embodiment, for each number of submitted pages, the number of laser light, on specialsee potential exposure drum, not less than -200 V, at which the density of pure black image is not less than 1.4, measured every 5000 sheets. As a result, the number of laser light to obtain potential exposure drum -200 In ensuring the progression of the density of pure black in the range not less than 1.4, shown in Fig.

Using the quantity of laser light to obtain the potential exposure of the drum not less than -200 V, necessary to ensure the density of pure black is not less than 1.4, shown in Fig, assess the progression of the density of pure black and progression line width in the test sheet feeder. The number of laser light to ensure the density of pure black is not less than 1.4 when is the use of drum W=75500 (10,000 pages) is switched at the time when the value of the use of the drum W is 37750 (5000 sheets). In addition, the correspondence between the number of received sheets for switching and the number of laser light shown in Fig.

As a result, as shown in Fig(a), the density of pure black image can show a stable value during the test sheet feeder.

In relation to the line image, as shown in Fig(b), it is possible to achieve a stable progression line width, although in the last step, there is some increase in line width.

The sequence control is placed in the mode of low consumption of the toner in this embodiment will be described with reference to figure 1, 26 and 28.

Together with the print command, the image information is transmitted from a computer or other device connected to the printer, making starts running on the printer (1901). After the CPU 103 decides whether all image information is accepted (1902), the controller 104 I / o reads threshold information from storage devices installed on the cartridge. The CPU 103 compares the use of the drum with the threshold information (1904)to select the number of laser light in accordance with the threshold information of the use of the drum shown in Fig (1907). After selecting the number of the laser light controller 105 performs image processing image processing (1906). Then, image processing is carried out (1914) in accordance with the area of concentrated pixels determined from the area of the concentrated pixel having a large area (1909), areas of concentrated pixel having a small area (1910), and area non-printable pixels, for example, empty points (1911). Then a decision is made whether the raw image in relation to the resulting image information (1908). When the completion of processing of the image is confirmed (1906), by the formation of the image. When carrying out the image-forming photosensitive Baraba is exposed to laser light at a selected number of laser light to perform image formation (1912). After this is accomplished through completion of treatment to completion of all print operations (1913).

In this embodiment, by analogy with options for implementation 1 and 2, the threshold information of the use of the drum is stored in the storage device cartridge and manages change the value of the number of laser light for forming the image at the time when the drum reaches the threshold information.

The storage device has the same design as shown in Fig. Threshold information use drum is stored in the storage area 2807 shown in Fig. In addition, the number of laser light corresponding to the threshold information may be stored in the storage area 2808.

In addition, in this embodiment, by analogy with options for implementation 1 and 2, you can control according to the options exercise 1 and 2, so that the use of the drum W, calculated from the above calculation equation using the dryer, updated and stored in the storage area 2803 storage device and its information is read out and compared with the threshold information stored in the storage area 2807 storage device to operate at the time when the drum reaches the threshold information.

the moreover, by analogy with options for implementation 1 and 2, the time of application of the charging bias Pt and time, drum rotation time Dt can be updated and saved in the storage area 2803, and the coefficients a and b can be stored in the storage area 2804 to use when calculating the use of the drum W.

As described above, by changing the number of laser light per point of concentrated pixel based on the use of the drum (the number of submitted sheets for cartridges, you can make this low consumption of toner, which can sustain a change of potential exposure on a photosensitive element at a constant level on the basis of the use of the drum and the maximum possible reduction in the consumption of toner regardless of changes in the thickness of the drum due to the use of the drum, in order to stabilize the characteristics of the image.

In this embodiment, used 5 types of the quantity of laser light and the threshold values that are to be switched, but the number of types of the quantity of laser light can also be increased accordingly, to efficiently provide stable characteristics of the image.

In addition, image processing is performed in each mode low spending by sublattice is selenia concentrated pixel having a small area and having a large area. However, you can also perform a more detailed division, performing the analysis more carefully.

In this embodiment, in the framework of the area of concentrated pixels, effectively adding a sequence, so as not to perform the operation on the reduction of the consumption of toner.

In the present invention conditions, including processing speed, resolution, time of laser radiation, the use of the drum, its estimated equation, the contribution in relation to the thickness of the photosensitive layer used in the calculation of the ratio, time of application of a bias voltage charging and time of application of a bias voltage of the developer is not limited to be applied in this embodiment.

An implementation option 4

According to a variant implementation of the 3, even in the case when the photosensitive layer wears out, depending on the use of the drum to change the potential exposure on a photosensitive drum by changing the amount of light for the laser light depending on the use of the drum of the toner cartridge and switching it to maintain the potential exposure of the drum at a constant value, it becomes possible to provide the mode of low consumption, providing a stable features depicted the I.

In this embodiment, depending on the use of the drum, the bias voltage of the developer and the bias voltage charging is changed to maintain the contrast of the developer at a constant value without changing the contrast of the black, providing a low expenditure, the stabilizing features of the image.

Regarding the explanation of the device imaging and process cartridge (figure 1), explanation of the processing circuit of the image (figure 4), explaining the method of processing image (figure 5-12) and an explanation of the calculation of usage of the photosensitive drum, the explanation is identical to the corresponding explanations under option exercise 1 and is therefore omitted.

Now we describe this implementation.

In this embodiment, the low consumption and the conditions of the experiment are identical to those described under option exercise 1.

First, when studying the relationship between the use of drum and contrast processing component of the DC bias voltage of the developer is equal to -450 In the same as the above option exercise 1. From Fig.9, it is clear that at the initial stage of sheet feeder, i.e. when the drum W=0, contrast processing is equal to 250V, but decreases to about 100, when the use of the drum W is ostiguy about 18000.

Accordingly, the component of the DC bias voltage of the developer varies depending on the use of the drum, so the contrast processing is never less than 250 C. In this case, if the only component of the DC bias voltage of the developer is changed, it is possible to maintain the contrast of the developer constant, but the contrast value decreases with black potential exposure of the drum, which in some cases leads to the appearance of the veil of processing. For this reason, the component of the DC bias voltage charging is also changed in conjunction with the direct current component in the bias voltage of the developer.

In addition, even when the potential exposure of the drum is changed, the potential exposure on a photosensitive drum which is exposed to laser light, laser scanning, should be substantially altered.

Component of the DC bias current of the charging component and DC offset processing in respect of the relevant implications of the use of the drum shown in Fig. Using Fig describe the progression of density in the case of the implementation of the dough sheet feeder.

As a result, as shown in Fig(a) (the density of pure black) and 31(b) (line width)due to the switching contrast ProAc is to ensure values are not smaller 250 while maintaining the contrast of the black, the progression of the density of pure black and progression of the line image that is reduced depending on the use of the drum, can be stabilized to ensure a stable image during the test sheet feeder.

The sequence control mode to the low consumption of the toner in this embodiment will be described with reference to figure 1, 30 and 32.

Together with the print image information is transmitted from a computer or other device connected to the printer, making starts running on the printer (2301). After the CPU 103 decides whether all image information is accepted (2302), the controller 104 I / o reads threshold information from storage devices installed on the cartridge. The CPU 103 compares the use of the drum with the threshold information (2304)to select the bias voltage of the developer (2315) and the bias voltage charging (2307) in accordance with the threshold information of the use of the drum shown in Fig (2307). After selecting the controller 105 performs image processing image processing (2306). Then, image processing is carried out (2314) in accordance with the area of concentrated pixels determined from the area of the concentrated pixel having a large area (2309), areas of concentrated pixels having small the horse (2310), and area non-printable pixels, for example, empty points (2311). Then a decision is made whether the raw image in relation to the resulting image information (2308). When the completion of processing of the image is confirmed (2306), by the formation of the image. When performing image formation of the photosensitive drum is charged by the bias voltage of the developer selected depending on the use of the drum, and exposed to laser light. By contrast processing, created by the bias voltage of the developer and the bias voltage charging, selected depending on the use of the drum, by the formation of the image (2312). After this is completed to completion of all print operations (1913).

In this embodiment, by analogy with the variants of the implementation of 1-3, the threshold information of the use of the drum is stored in the storage device cartridge and manages change the value of the number of laser light for forming the image at the time when the drum reaches the threshold information.

The storage device has the same design as shown in Fig. Threshold information use drum is stored in the storage area 2807 shown in Fig. the moreover, voltage value of the offset processing and the charge corresponding to the threshold information may be stored in the storage area 2808.

In addition, in this embodiment, by analogy with options for implementation 1 and 2, you can control according to the options exercise 1 and 2, so that the use of the drum W, calculated from the above calculation equation using drum is updated and stored in the storage area 2803 storage device and its information is read out and compared with the threshold information stored in the storage area 2807 storage device to operate at the time when the drum reaches the threshold information.

In addition, by analogy with options for implementation 1 and 2, the time of application of the charging bias Pt and time, drum rotation time Dt can be updated and saved in the storage area 2803, and the coefficients a and b can be stored in the storage area 2804 to use when calculating the use of the drum W.

As described above, in the modification of the potential exposure of the drum depending on the use of the drum (the number of submitted pages), the bias voltage of the developer is changed to maintain a constant contrast processing. In addition, the bias voltage of the developer change to DM is to make a contrast processing, permanent and at the same time, the bias voltage charging similar change for change's potential exposure of the drum, allowing the contrast of the black remains constant, and the veil processing does not occur. This allows a low consumption of toner capable of maintaining a stable image.

In this embodiment, the corresponding voltage value of the charging bias and the processing described above is not limited to the above values.

In addition, the threshold value, the schedule switch and the number of switches is also not limited to the above.

The above control methods according to the options exercise 1-4 relate to the mode of low consumption of toner, and thus, is not applicable to normal mode imaging.

In the present invention other than the above control to reduce the change of potential exposure on a photosensitive member (photosensitive drum) in the mode of low consumption of toner, described according to the options exercise 1-4, for example, a control in which the charging status and the processing is switched depending on the use of the drum with the aim of preserving the features of the image in the normal image formation mode and the low consumption t is Nera. In this case, the switching States of the charging and processing of the used threshold value different from the threshold for use of drum used according to the options exercise 1-4.

Although the invention has been described with reference to the design described here, it is not limited to the described details, and this application is intended to cover modifications or changes that meet the purposes of the improvements or the scope the following claims.

Industrial application

As described above, according to the present invention, by changing the state of image formation depending on the amount of use of the element image transfer (use of the drum), it becomes possible to maintain a stable image to reduce the size of the consumption of the developer, regardless of the use of the drum.

In addition, by changing the state of image formation depending on the amount of use of the element of the image transfer and the discernment of the results of the tools of discernment to distinguish between the size of the formed region of concentrated pixels, it becomes possible to maintain a stable image to reduce the size of the consumption of the developer, regardless of the use of the drum.

In addition, the status change processing e the ment to the development and condition of the charging element of the charging States of the image formation depending on the amount of use of the element image transfer, it is possible to maintain a stable image to reduce the size of the consumption of the developer, regardless of the use of the drum.

1. Device for the formation of images having a first mode of image formation for forming an image on the transfer element of the image using the developer in a first state of image formation and the second mode of image formation for forming an image on the transfer element of the image using the developer in the second state of image formation, which differs from the first specific image formation and is set so that the amount of consumption of developer in relation to the identical image in the second mode of forming the image is less than in the first mode of image formation, and the device contains

a storage medium for storing information about the volume of use of the item image transfer,

the controller image processing for image processing based on the size of the area of concentrated pixels of image information, when a second mode of forming the image, and the controller image processing receives image information, and

management tool to change the done state of image formation in the second mode of forming images based on the processing results, performed by the controller image processing, and information stored in the storage medium.

2. The device according to claim 1, in which the device forming the image further comprises a means of discernment to distinguish the specified size of the area of concentrated pixels, and a means of distinguishing changes the second state imaging depending on the amount of use of the element transfer images stored in the storage medium, and the distinction made by the specified tool of discernment.

3. The device according to claim 2, in which the tool of discernment modifies the second state imaging depending on whether more or less concentrated area of pixels of a given size.

4. Device according to any one of claims 1 to 3, in which information about the volume element, the image transfer is a predetermined threshold information and management tool modifies the second state of image formation, when the amount of usage of an image transfer reaches a predetermined threshold information.

5. Device according to any one of claims 1 to 3, in which the device forming the image further comprises a means of display for the display element of the image transfer in the operation state of expon the simulation on the basis of image information.

6. The device according to claim 5, in which the operation state of the exposure is the exposure time or the energy of the radiation means the document.

7. Device according to any one of claims 1 to 3, in which the device includes an element of charging for electric charging element of the image transfer and processing element for supplying developer to an element of the image transfer, and the condition of image formation contains the status of the charging element of the charging state of the processing element processing.

8. The device according to claim 7, in which the charging status represents the bias voltage applied to the charging element, and the state of development represents the bias voltage applied to the processing element.

9. Device according to any one of claims 1 to 3, in which an element of the image transfer and storage facility jointly supported to form a cartridge that is installed with the possibility of disconnecting the device forming the image.

10. The device according to claim 9, in which the cartridge further comprises a charging element or item processing.

11. Cartridge for installation with the possibility to detach the device forming the image having a first mode of image formation for forming an image on the transfer element of the image using a developer in the first about the specific condition of forming images, and the second mode of image formation for forming an image on the transfer element of the image using the developer in the second state of image formation, which differs from the first specific image formation and is set so that the amount of consumption of developer in relation to the identical image in the second mode of forming the image is less than in the first mode of image formation, and includes the controller image processing for image processing based on the size of the area of concentrated pixels of image information, when a second mode of forming the image, and the controller image processing receives information of the image

the cartridge contains

item image transfer and

a storage medium for storing information about the ink cartridge, and storage medium has a first storage area for storing information on the amount of usage of an image transfer used in conjunction with information from the image depending on the results of processing performed by the controller image processing, to change the second state of image formation.

12. The cartridge according to claim 11, in which the storage medium additionally has a second storage area for storing the amount of use of the element image transfer.

13. The cartridge according to claim 11 or 12, in which information about the volume element of the transfer image is s is a predetermined threshold information.

14. The cartridge according to any one of § § 11 and 12, in which the device forming the image further comprises a means of display for the display element, image transfer, and the second state of image formation is the status of the operation of the exposure means exposure.

15. The cartridge 14, in which the operation state of the exposure is the exposure time or the energy of the radiation means the document.

16. Device according to any one of § § 11 and 12, in which the device includes an element of charging for electric charging element of the image transfer and processing element for supplying developer to an element of the image transfer, and the condition of image formation contains the status of the charging element of the charging state of the processing element processing.

17. The device according to clause 16, in which the charging status represents the bias voltage applied to the charging element, and the state of development represents the bias voltage applied to the processing element.

18. Storage device to be installed on the cartridge that you want to install to removable device forming an image having a first mode of image formation for forming an image on the item image transfer using have is Italia in the first specific condition of forming images, and the second mode of image formation for forming an image on the transfer element of the image using the developer in the second state the formation of the image, which differs from the first specific image formation and is set so that the amount of consumption of developer in relation to the identical image in the second mode of forming the image is less than in the first mode of image formation, and includes the element of the image transfer and the controller image processing for image processing based on the size of the area of concentrated pixels of image information, when a second mode of forming the image, and the controller image processing receives image information, the storage device has a first storage area for storing information on the amount of usage of an image transfer used in conjunction with information images depending on the results of processing performed by the controller image processing, to change the second state of image formation.

19. The device according to p, in which the storage device additionally has a second storage area for storing the amount of use of the element image transfer.

20. The device according to p or 19, in which information about the volume element, the image transfer is specified threshold information.

21. The device according to p or 19, in which the device of the image forming device further comprises display for the display element of the image transfer, and information regarding the second state of image formation is information about the operation state of the display device display.

22. The device according to item 21, in which information about the operation state of the exposure is the exposure time or the energy emission device display.

23. The device according to p or 19, in which the device includes an element of charging for electric charging element of the image transfer and processing element for supplying developer to an element of the image transfer, and the condition of image formation contains the status of the charging element of the charging state of the processing element processing.

24. The device according to item 23, in which the charging status represents the bias voltage applied to the charging element, and the state of development represents the bias voltage applied to the processing element.

25. Storage device to be installed on the cartridge that you want to install to removable device forming an image having a first mode of image formation for forming an image on the transfer element of the image using the developer in a first state of image formation and the second mode of image formation for forming the picture is of the item image transfer using the developer in the second state of image formation, which differs from the first specific image formation, and is set so that the amount of consumption of developer in relation to the identical image in the second mode of forming the image is less than in the first mode of image formation, and includes the element of the image transfer and the controller image processing for image processing based on the size of the area of concentrated pixels of image information, when a second mode of forming the image, and the controller image processing receives image information, the storage device has a first storage area for storing information on the amount of usage of an image transfer used in conjunction with information from the image depending on the results of the processing performed by the controller image processing, to change the second condition of forming images, and information for changing the second state imaging represents information that is used in the second mode of forming the image, but not used in the first mode of forming the image.

26. The device according A.25, in which the storage device additionally has a second storage area for storing usage elementaires image.

27. The device according to p. 25 or 26, in which information about the volume element, the image transfer is specified threshold information.

28. The device according to p. 25 or 26, in which the device of the image forming device further comprises display for the display element of the image transfer and information regarding the second state of image formation is information about the operation state of the display device display.

29. The device according to p, in which information about the operation state of the exposure is the exposure time or the energy emission device display.

30. The device according to p. 25 or 26, in which the device includes an element of charging for electric charging element of the image transfer and processing element for supplying developer to an element of the image transfer, and the condition of image formation contains the status of the charging element of the charging state of the processing element processing.

31. The device according to item 30, in which the charging status represents the bias voltage applied to the charging element, and the state of development represents the bias voltage applied to the processing element.



 

Same patents:

FIELD: engineering of image forming devices.

SUBSTANCE: image forming device has first image forming mode for forming an image on image-carrying element by using a developer under given condition of image forming and second image forming mode for forming an image on an image-carrying element by using a developer under second condition of image forming, which is different from the first given image-forming condition and is set in such a manner, that developer flow value in second image forming mode is less than flow value in first image forming mode. Device also contains: storage means meant for storing information for setting second image-forming condition, corresponding to the set of levels of usability value of image-carrying element, differentiation means for differentiating an image subject to forming and control means, meant for setting second image forming condition in second image forming mode depending on the result of differentiation, produced by means of differentiation and usability value of image-carrying element and information, stored in the storage means. The cartridge contains information processing means, intended for processing information on the image, which should be formed, an image-carrying element, storage means, meant for storing information in the cartridge, and having first storage area for storage of information, used in conjunction with image information, for setting second image-forming condition depending on the set of levels of usability value of image-carrying element in second image forming mode.

EFFECT: creation of device for forming an image and of a cartridge, which allow to reduce amount of used developer, and to preserve stable quality of image independently from usability value of image-carrying element.

4 cl, 38 dwg

FIELD: electro-photographic devices.

SUBSTANCE: in accordance to the invention, process cartridge is installed with possible detachment (removal) in main assembly of electro-photographic image-forming device, which assembly contains output contact, moveable between electric connection position and a position withdrawn from electric connection position, shifting element for moving the output contact and resilient action element for resilient contraction of shifting element for contracting the output contact in direction towards position withdrawn from electric connection position. The process cartridge contains electro-photographic photo-sensitive drum, moveable working element, which may be moved relatively to the body of the cartridge, and, during insertion of process cartridge into main assembly of the device, the moveable working element ensures engagement with immovable element capable of engagement which is fastened in the main assembly of the device, to move relatively to the cartridge body, and is capable of engagement with shifting engaging section of shifting element for moving the output contact from withdrawn position to electric connection position in direction against the elastic force of resilient action element after engagement with immoveable element capable of engagement, input electric contact for receiving voltage for activation of process means when engaged with output contact, which is moved to electric connection position.

EFFECT: ensured reliability of electric connection between input electric contact of process cartridge and output contact, provided in main assembly of the image-forming device; prevented damage to electric circuit of the main assembly of the electro-photographic image-forming device and weakened impact or push of process cartridge, received by it from the side of main assembly of the device during installation of process cartridge in cartridge installation location in main assembly of electro-photographic image-forming device.

4 cl, 53 dwg

FIELD: processing cartridge and electro-photographic image creation device.

SUBSTANCE: processing cartridge is made with possible installation and removal in the main block of the image creation device. Main block contains electric socket. Moveable element is mounted with possible movement between protected position and open position. Blocking element is capable of movement between blocking position, serving for limiting serviceability of moveable element, and releasing position, serving for restoring serviceability of moveable element. Processing cartridge contains electro-photographic photo-sensitive drum, processing tools. First contacting section is used for moving the blocking element from blocking position into releasing position in main block of device. Second contacting section is used for moving the moveable element from protecting position into opening position into main block of device. Socket is used for electric connection to electric socket of main block during installation of cartridge in the main device block.

EFFECT: increased reliability of electric connection between electric contacts of processing cartridge and electric contacts of main block of electro-photographic image creation device, when the cartridge is installed into main block of electro-photographic image creation device.

4 cl, 46 dwg

FIELD: mechanical engineering; optics.

SUBSTANCE: technological cartridge is made for rest against movable guide disposed in main unit of image forming electric-photographic device and for movement from position of reception to position of mounting relating to movement of movable guide. Cartridge has electric-photographic drum, processing aids effecting on drum, frame of cartridge which serves as support for drum and for processing aids, first and second parts to be rested disposed at ends of drum, first and second positioning parts disposed properly in relation to main unit of image forming device, which parts extend outside frame of cartridge close to ends of drum. Cartridge also has engaged part for introduction into engagement with blocking part disposed in image forming device and made for movement in relation to movable guide upon receiving traction from blocking part to move from position of reception to position of mounting by means of movement of blocking part. Image forming electric-photographic device, which has mentioned cartridge, and mechanism for mounting mentioned technological cartridge re also given.

EFFECT: comfort at easiness of mounting of technological cartridge into main unit.

17 cl, 21 dwg

FIELD: electrophotographic devices.

SUBSTANCE: image-forming device provided with cartridge mounted in it, is made for forming image at different speeds. Cartridge has part of processing members for maintaining operation of image forming and memorizing medium which has memory area for storing data. The data relates to conditions of image forming by processing units for any speed of image forming. Device has control unit for setting conditions of image forming by processing units correspondingly to speeds of forming of image based on data memorized in memory unit. Memorizing medium can additionally have second memory area for storing data which relates to threshold value of cartridge's factor of usage value and third memory area for storing data related to threshold value of cartridge's factor of usage value. Cartridge's factor of usage, which depends on speed of image forming, is compensated.

EFFECT: improved efficiency of operation.

25 cl, 9 dwg

FIELD: engineering of image forming devices.

SUBSTANCE: image forming device has first image forming mode for forming an image on image-carrying element by using a developer under given condition of image forming and second image forming mode for forming an image on an image-carrying element by using a developer under second condition of image forming, which is different from the first given image-forming condition and is set in such a manner, that developer flow value in second image forming mode is less than flow value in first image forming mode. Device also contains: storage means meant for storing information for setting second image-forming condition, corresponding to the set of levels of usability value of image-carrying element, differentiation means for differentiating an image subject to forming and control means, meant for setting second image forming condition in second image forming mode depending on the result of differentiation, produced by means of differentiation and usability value of image-carrying element and information, stored in the storage means. The cartridge contains information processing means, intended for processing information on the image, which should be formed, an image-carrying element, storage means, meant for storing information in the cartridge, and having first storage area for storage of information, used in conjunction with image information, for setting second image-forming condition depending on the set of levels of usability value of image-carrying element in second image forming mode.

EFFECT: creation of device for forming an image and of a cartridge, which allow to reduce amount of used developer, and to preserve stable quality of image independently from usability value of image-carrying element.

4 cl, 38 dwg

FIELD: engineering of image forming devices.

SUBSTANCE: image forming device has first image forming mode for forming an image on image-carrying element by using a developer under given condition of image forming and second image forming mode for forming an image on an image-carrying element by using a developer under second condition of image forming, which is different from the first given image-forming condition and is set in such a manner, that developer flow value in second image forming mode is less than flow value in first image forming mode. Device also contains: storage means meant for storing information for setting second image-forming condition, corresponding to the set of levels of usability value of image-carrying element, differentiation means for differentiating an image subject to forming and control means, meant for setting second image forming condition in second image forming mode depending on the result of differentiation, produced by means of differentiation and usability value of image-carrying element and information, stored in the storage means. The cartridge contains information processing means, intended for processing information on the image, which should be formed, an image-carrying element, storage means, meant for storing information in the cartridge, and having first storage area for storage of information, used in conjunction with image information, for setting second image-forming condition depending on the set of levels of usability value of image-carrying element in second image forming mode.

EFFECT: creation of device for forming an image and of a cartridge, which allow to reduce amount of used developer, and to preserve stable quality of image independently from usability value of image-carrying element.

4 cl, 38 dwg

FIELD: physics.

SUBSTANCE: image forming device has a first image forming mode to form an image on an image transfer element using developer in a first fixed state of image forming, and a second image forming mode to form an image on an image transfer element using developer in a second state of image forming, which is different from said first fixed state of image forming and is predefined so as to ensure developer consumption in the second image forming mode lower than that in the first image forming mode for the same image. At that, said device includes a storage to store information on used capacity of the image transfer element, an image processing controller to process the image on the basis of size of concentrated pixel area in the image information when the second image forming mode is set, and a control means to change the second image forming state in the second image forming mode depending on results of the processing carried out by the image processing controller and on the information stored in the storage. The cartridge contains an image transfer element. The storage includes the first storing area to store information on used capacity of the image transfer element, which is used in combination with the image information depending on results of the processing carried out by the image processing controller in order to change the second state of image forming. At that, the information for changing the second state of image forming is the information, which is used in the second mode of image forming, but not in the first mode of image forming.

EFFECT: provision of image forming device and cartridge capable to reduce consumption of developer while keeping stable image peculiarities regardless used capacity of image transfer element; provision of storage device to be installed on cartridge.

31 cl, 32 dwg

FIELD: physics; optics.

SUBSTANCE: image generating device comprises a rotatable latent image carrier, which is configurable to carry latent image, a spreading blade, a cleaning blade for remaining toner removal from the cleaned area of latent image, and a lubricating means. The latter comprises a lubricating element located on the downside of the cleaning blade as regards to direction of rotation of latent image carrier. It lubricates respective area of latent image carrier. Cleaning area and lubricating area overlap and are, in fact, one and the same area of latent image carrier. A brush roller is used as a lubricating element. Lubricant is a lubricating rod; image generating device comprises an apparatus, which rotates the brush roller so that the latter removes the rod-shaped lubricant and applies it onto latent image carrier. Cleaning blade is located at the upper side of lubricating means in the direction of rotation of image carrier. Spreading blade is located at the downside; brush roller width and longitudinal spreading blade width relationship being as follows: brush roller width ≤ spreading blade width.

EFFECT: reduced friction factor of photoconductive material, reduced dimensions, reduced lubricant consumption.

30 cl, 18 dwg

FIELD: mechanics.

SUBSTANCE: proposed cartridge to feed developer can be mounted in the developer intake device and removed therefrom and comprises the following elements, i.e. compartment to contain developer therein with a hole to feed it therefrom, a flexible element arranged in the aforesaid compartment around the said hole to seal the transition area between the developer feed cartridge and developer intake device. It also includes a film placed on the compartment containing developer and enveloping aforesaid flexible sealing element. The said film can be removed from the outlet hole. The proposed device incorporates also a gate to open and close the said outlet hole, that can slide over the flexible element on opening the latter by removing the aforesaid film.

EFFECT: cartridge to feed developer that requires minor force to open and close its gate and comprises sealing film ruling out leakage of dye-coupling developer.

5 cl, 6 dwg

FIELD: physics; image processing.

SUBSTANCE: invention relates to a device for transporting developer for use in an image formation device. Proposed is a device for transporting developer having a developer transportation unit and a unit for detecting toner concentration. There is a clamping wall in part of the entire area of the first transportation compartment in which there is a first screw element. The area lies opposite the bottom wall of the first transportation compartment on the bottom side in the direction of gravity of the first screw element and opposite sidewalls of the first transportation compartment on both transverse sides orthogonal to the direction of the axis of rotation of the first screw element. In this area toner concentration of the transported developer is determined using a toner concentration sensor. The clamping wall comes into contact with developer on the top in the direction of gravity, with the developer moving from the bottom to the top side in the direction of gravity in accordance with rotation of the first screw element and presses the developer down in the direction of gravity.

EFFECT: more accurate toner concentration detection.

13 cl, 48 dwg

FIELD: printing industry.

SUBSTANCE: in development cartridge contact plate of electrode element is arranged with the possibility of contact with contact site of development shift within the limits of projection plane, when slave binding part is projected in the first direction. The first axial line, which is axis of developing roll shaft, and the second axial line, which is axis of inlet toothed wheel, are arranged parallel and equidistantly in fore and aft direction. Part of contact plate is arranged on the second axial line. The first line that connects axis, around which inlet toothed gear rotates, and shaft of developing roll, and the second line that connects contact plate and shaft of developing roll are arranged parallel to each other. Distance between the first axial line and the second axial line is equal to the distance between the first axial line and contact plate.

EFFECT: stable supply of power to shaft of developing roll, even when motive force is sent directly from master binging part of device for images generation to slave binding part of development cartridge.

74 cl, 25 dwg

FIELD: physics.

SUBSTANCE: cartridge for supplying developer is made with possibility of detachable installation into the main unit of the electrophotographic image formation device. The primary colour cartridge includes: an electrophotographic photosensitive drum; a developer roller designed for developing an electrostatic latent image formed on the electrophotographic photosensitive drum, a valve section of the receiving side which moves between the position for allowed reception of developer for opening developer reception holes, a moving section of the receiving side which moves for interrelated movement of the valve section of the receiving side between the position for allowed reception of developer and the position for prohibited reception of the developer. The moving section of the receiving side includes a working section of the receiving side which occupies the working position when the valve section of the receiving side is in the position for allowed reception of the developer, a control element designed for controlling movement of the moving section of the receiving side when the working section of the receiving side is in the working position. The cartridge for supplying developer also includes a developer holding section for the source side, a valve section for the source side which moves between the position for allowed supply of developer for opening holes for feeding the developer and the position for prohibited supply of the developer for closing holes for feeding the developer and a moving section for the source side. The moving section of the source side moves when the cartridge for supplying developer enters the main unit of the device in a position where the primary colour cartridge is installed in the main unit of the device for interrelated movement of the valve section for the source side from the position for prohibited supply of developer to the position for allowed supply of developer as a result of linkage with the working section of the receiving side of the moving section of the receiving side, whose movement is controlled by the control element in a state in which the working section of the receiving side lies in the working position.

EFFECT: design of a cartridge for supplying developer, a primary colour cartridge and an electrophotographic image formation device in which when the cartridge for supplying developer is extracted from the main unit of the device in a position where both the primary colour cartridge and the cartridge for supplying developer are installed in the main unit of the electrophotographic image formation device, loss of developer through holes for feeding the developer or through holes for receiving the developer can be prevented.

40 cl, 28 dwg

FIELD: physics.

SUBSTANCE: proposed is a developer transportation device which has a developer transportation unit and a toner concentration detection unit which can detect concentration of toner in the developer by getting into contact with the developer or a toner concentration sensor or the wall of the developer transportation unit. The average maximum value of the force pressing the developer to the surface of the sensor of the toner concentration detection unit or to the wall of the developer transportation unit ranges from 9.8×15 N/m2 to 9.8×100 N/m2. Proposed also is an image processing unit which has a latent image holding unit and a developing device which has a developer transportation device and a developer holding unit; an image formation device which has a latent image holding unit and a developing device.

EFFECT: more accurate detection of toner concentration.

8 cl, 26 dwg

FIELD: physics.

SUBSTANCE: developing apparatus is detachably mounted in the housing of an image formation device. The memory device has terminals passing through the rear side of the developing apparatus. The memory device is placed closer to the power reception unit formed on one side of the developing apparatus than to the actuating force reception unit formed on the other side of the developing apparatus.

EFFECT: prevention of damage to the memory device and bad connection between terminals of the memory device and the main housing of the image formation device due to the improved installation position of the memory device, and the image formation device fitted with such a development apparatus.

24 cl, 5 dwg

FIELD: physics, photography.

SUBSTANCE: invention relates to an image forming device and specifically to configuration of a developer unit of an image forming device. The developer cartridge has case with an attachment section which receives the developer cartridge in order to fill the developer cartridge case with an amount of developer equal to that consumed through the developer cartridge case and an element which forms the cover which closes the opening of the attachment section when the cartridge for the developer is not fitted into the developer cartridge. The element which forms the cover has a part for collecting the remaining developer. The developer unit has a developer cartridge which includes a developer supply unit which contains developer, and an attachment section with an opening facing the surface of the wall on one side of the developer cartridge and a cartridge for the developer which is inserted into the attachment section in order to feed the developer into the developer supply unit.

EFFECT: possibility of filling high-quality developer.

22 cl, 7 dwg

FIELD: electrophotographic devices.

SUBSTANCE: image-forming device provided with cartridge mounted in it, is made for forming image at different speeds. Cartridge has part of processing members for maintaining operation of image forming and memorizing medium which has memory area for storing data. The data relates to conditions of image forming by processing units for any speed of image forming. Device has control unit for setting conditions of image forming by processing units correspondingly to speeds of forming of image based on data memorized in memory unit. Memorizing medium can additionally have second memory area for storing data which relates to threshold value of cartridge's factor of usage value and third memory area for storing data related to threshold value of cartridge's factor of usage value. Cartridge's factor of usage, which depends on speed of image forming, is compensated.

EFFECT: improved efficiency of operation.

25 cl, 9 dwg

FIELD: mechanical engineering; optics.

SUBSTANCE: technological cartridge is made for rest against movable guide disposed in main unit of image forming electric-photographic device and for movement from position of reception to position of mounting relating to movement of movable guide. Cartridge has electric-photographic drum, processing aids effecting on drum, frame of cartridge which serves as support for drum and for processing aids, first and second parts to be rested disposed at ends of drum, first and second positioning parts disposed properly in relation to main unit of image forming device, which parts extend outside frame of cartridge close to ends of drum. Cartridge also has engaged part for introduction into engagement with blocking part disposed in image forming device and made for movement in relation to movable guide upon receiving traction from blocking part to move from position of reception to position of mounting by means of movement of blocking part. Image forming electric-photographic device, which has mentioned cartridge, and mechanism for mounting mentioned technological cartridge re also given.

EFFECT: comfort at easiness of mounting of technological cartridge into main unit.

17 cl, 21 dwg

FIELD: processing cartridge and electro-photographic image creation device.

SUBSTANCE: processing cartridge is made with possible installation and removal in the main block of the image creation device. Main block contains electric socket. Moveable element is mounted with possible movement between protected position and open position. Blocking element is capable of movement between blocking position, serving for limiting serviceability of moveable element, and releasing position, serving for restoring serviceability of moveable element. Processing cartridge contains electro-photographic photo-sensitive drum, processing tools. First contacting section is used for moving the blocking element from blocking position into releasing position in main block of device. Second contacting section is used for moving the moveable element from protecting position into opening position into main block of device. Socket is used for electric connection to electric socket of main block during installation of cartridge in the main device block.

EFFECT: increased reliability of electric connection between electric contacts of processing cartridge and electric contacts of main block of electro-photographic image creation device, when the cartridge is installed into main block of electro-photographic image creation device.

4 cl, 46 dwg

FIELD: electro-photographic devices.

SUBSTANCE: in accordance to the invention, process cartridge is installed with possible detachment (removal) in main assembly of electro-photographic image-forming device, which assembly contains output contact, moveable between electric connection position and a position withdrawn from electric connection position, shifting element for moving the output contact and resilient action element for resilient contraction of shifting element for contracting the output contact in direction towards position withdrawn from electric connection position. The process cartridge contains electro-photographic photo-sensitive drum, moveable working element, which may be moved relatively to the body of the cartridge, and, during insertion of process cartridge into main assembly of the device, the moveable working element ensures engagement with immovable element capable of engagement which is fastened in the main assembly of the device, to move relatively to the cartridge body, and is capable of engagement with shifting engaging section of shifting element for moving the output contact from withdrawn position to electric connection position in direction against the elastic force of resilient action element after engagement with immoveable element capable of engagement, input electric contact for receiving voltage for activation of process means when engaged with output contact, which is moved to electric connection position.

EFFECT: ensured reliability of electric connection between input electric contact of process cartridge and output contact, provided in main assembly of the image-forming device; prevented damage to electric circuit of the main assembly of the electro-photographic image-forming device and weakened impact or push of process cartridge, received by it from the side of main assembly of the device during installation of process cartridge in cartridge installation location in main assembly of electro-photographic image-forming device.

4 cl, 53 dwg

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