Image forming device, cartridge, image forming system and memorizing medium for cartridge

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

 

The technical field to which the invention relates.

The present invention relates to a device for the formation of images, such as a laser printer, a photocopier, Fax machine and so on, the principle of which is based on the electrophotographic method of forming image; pachatusan the cartridge is installed in said device forming the image; the system of image formation for forming an image on the recording medium (a medium for recording) using the specified print cartridge; and a storage medium mounted in the specified printing cartridge.

The level of technology

In the device for electrophotographic image formation, such as a photocopier or laser printer, the image is formed during the following operations. Namely, the beam of light is projected when the modulation information forming the image on the electrophotographic photoresistive element, forming thereon the latent image and the latent image is converted into a visible image by applying to the latent image of the electrophotographic developer (toner) as a printing material using the developer tools. Then the visible image is transferred from the photoresistive element on the recording medium (image, such as a sheet of printed paper.

For easier maintenance, more specifically, to facilitate replacement of the photoresistive drum or filling device imaging consumables, such as toner, some devices form images of the type indicated above are designed to be compatible with printing ink, in which one block is the combination of a container for toner and developer tools, photoresistive element, charging means and cleaning means, comprising a container for the waste toner, etc. and which can extract set in the basic design of the device forming the image. When such a device imaging is a device for forming a color image having multiple processing means, each processing means may have different wear rate and, in addition, the intensity with which wear out photoresistive drums may differ from the intensity with which wear out the developer tools. Thus, as a way of overcoming these problems created various print cartridges, such as developing cartridges, cartridges with photoresistive drum, etc. In the case of developing cartridges make them different and for different colors, they manifest the latent image. In the case of cartridges with photoresistive drum they contain a combination of cleansers and photoresistive drum.

Here, the term "print cartridge" refers to the cartridge, in which one block is located electrophotographic photoresistive element and at least one processing tool along with the charging means, developing means and cleaning means, and which can extract set in the basic design of the device forming the image. It also means a cartridge in which one block contains at least charging means and electrophotographic photoresistive element and which can extract set in the basic design of the device forming the image.

In addition, some print cartridges equipped with a storage device (memory) for use related information. For example, in the case of printing with the cartridge described in U.S. patent No. 5272503, in memory stores information on the total utilization (used resource) cartridge for changes in operating facilities in accordance with the value of the total utilization of the cartridge; power is connected the charging current Il is installed the forces of light during exposure. In the case of these printing cartridges, manage, implement the same, despite their differences, if their total utilization of the same.

In the published patent applications in Japan No. 2001-117425 or 2001-117468 to prolong photoresistive each drum print cartridge while maintaining image quality at a preferable level, the strength of the charging current flowing in the printing cartridge, and the value of the developing voltage is set in accordance with information stored in a storage medium (media) cartridge: the strength of the charging current is set at the minimum level necessary to maintain image quality at a preferable level.

However, the effect of the used resource of the printing cartridge to the quality of image formation depends on the coefficient of performance, such as processing speed and/or performance of image formation. Thus, if two systems of image formation, the efficiency (i.e. processing speed or performance) which may vary and which have the same structural configuration, use within one period of time, the two devices over time will give a different quality of image is to be placed, because it is virtually impossible that two devices were kept the same processing speed and/or performance. Thus, in the past it was impossible to ensure that quality, which is formed by the image forming device of the image will not be affected by the conditions in which the device operates.

The invention

The present invention was created to resolve the above problems, and its main objective is to obtain a combination device imaging, print cartridge, system imaging and storage devices for the specified cartridge, which makes possible a reliable image formation is preferred.

Another objective of the present invention to provide a combination device of image formation with two or more speeds of formation of the image, print cartridge, system imaging and storage device for the cartridge, which allows to compensate the influence of the coefficient of use of the cartridge, depending on the speed of image formation, in order to form the preferred image quality regardless of the speed of image formation.

Another objective of the present invention to provide a comb the Nations of the device forming the image, print cartridge, system imaging and storage devices for the specified cartridge, which stores two or more sets of data (one set for each coefficient), more specifically the value of the total utilization of the cartridge, the threshold value for the total utilization of the cartridge and the data used to set other conditions of processing, when the value of the total utilization of the cartridge reaches one of the thresholds, to be able to offset the impact of the utilization of the cartridge, depending on the efficiency of the device forming the image, in order to form the preferred image quality.

According to one aspect of the present invention, device imaging, in which the cartridge containing the imaging element, and charging means for charging the imaging element can be set with the ability to extract, and which has two or more speeds of formation of the image, characterized in that

it uses a cartridge provided with a storage environment having a first memory area for storing a data set for each speed shaping the Oia image for setting the machining conditions and a control unit to set the conditions for the formation of the image, and

the control unit sets the condition for the formation of the image, which corresponds to the speed of image formation on the basis of the above data set to specify the conditions of processing.

According to another aspect of the present invention, the cartridge with the possibility of removal to install in the basic design of the device forming the image made with the possibility of forming images with two or more installations, performance, and which has parts involved in the process of image formation with the main design of the device imaging, and mass storage medium, characterized in that

a medium that has a first memory area for storing for each speed imaging dataset to set the processing conditions, and a control unit to set the conditions for the formation of the image.

According to another aspect of the present invention, a storage medium mounted in the cartridge with the possibility of removal to install in the basic design of the device forming the image made with the possibility of forming images with two or more installations, performance, and which has a part, involved the s in the process of image formation with the main design, differs in that it has a first memory area for storing for each speed imaging data set to specify the conditions of processing.

According to another aspect of the present invention, a system for forming an image containing the basic design and the cartridge and configured to form images with two or more performance preferences, characterized in that

it additionally contains

part to perform part of the process of image formation,

medium mounted in the cartridge and having a first memory area for storing for each speed imaging dataset to set the conditions for the formation of the image, which has a part to perform part of the process of image formation, and

a control unit to set the conditions for the formation of the image, and

moreover, the control unit sets a condition of forming images, which correspond to the speed of image formation, based on the data relating to the condition of image formation for parts performing part of the process of image formation.

These and other objectives, features and advantages of the present invention will be more clear when considering the following description of the preferred options for the implementation of the population of the present invention, this in combination with the attached drawings.

Brief description of drawings

Figure 1 depicts a block diagram showing the structure of a memory area in the storage device in the first embodiment of the present invention.

Figure 2 depicts a sectional view of the device imaging, which use the print cartridge in the first embodiment of the present invention.

Figure 3 depicts a graph showing the relationship between the data related to the utilization of the drum, and the thickness of the line in the first embodiment of the present invention.

Figure 4 depicts a block diagram that shows the relationship between the management part of the basic structure of the device imaging and data (information) in the storage device in the first embodiment of the present invention.

Figure 5 depicts a graph showing the relationship between potential difference during developing and the thickness of the line in the first embodiment of the present invention.

Fig.6-1 shows part of a flowchart of the sequence of operations showing the operation of image formation in the first embodiment of the present invention.

Fig.6-2 depicts another part of block flow diagrams showing the operation of the device is VA form images in the first embodiment of the present invention.

Fig.6-3 depicts a block diagram of the sequence of operations showing the operation of image formation in the first embodiment of the present invention.

7 depicts a block diagram showing the structure of a memory area in the storage device in the second embodiment of the present invention.

Detailed description of preferred embodiments of the invention

Next will be described in more detail with reference to the accompanying drawings print cartridges, device imaging system or imaging, in which you can extract to install one or more print cartridges and storage devices mounted in the print cartridges, according to the present invention.

Option 1

First, with reference to figure 2 will be described an example of performing electrophotographic device imaging, in which you can install the printing cartridge having a design appropriate to the present invention. In this embodiment of the invention a device for the formation of image is a laser printer, which produces an image by receiving information to form the image received from the host computer, and in which the printing toner cartridges is installed with the possibility of removal for replacement of the photoresistive element in the form of a drum, that is photoresistive drum with expired service on a new or filling device imaging consumables, such as the developer. First, with reference to figure 2 will be described device imaging and printing cartridge made in this embodiment of the invention.

The print cartridge in this embodiment of the invention contains many components as elements for carrying out the process of the formation of the image forming device of the image produced in this embodiment of the invention. More specifically, the print cartridge includes a housing (shell cartridge) and many manufacturing facilities, located within a single block in the housing. Processing means are photoresistive drum 1, that is, the photoresistive element in the form of a drum; a charging roller 2 contact type for uniform charge photoresistive drum 1; a developing roller 4, is used as a processing means, situated parallel to the photoresistive the drum 1 so that its peripheral surface is in contact with the peripheral surface of the photoresistive drum 1; and a cleaning blade 9 that serves as a cleanser; etc. Body contains part 6 for content is of the developer (the container with the developer), which rotatably holds the developing roller 4 and contains the developer T; and part 10 for keeping waste toner container waste toner), which contains residual toner after removing it from the photoresistive drum 1 to the cleaning blade 9. The print cartridge can extract be set by the user in the installation tool 101 of the device forming the image.

Developing roller 4 processor means is non-magnetic roller with a diameter of 20 mm, It has an aluminum cylinder and a resinous layer formed on the peripheral surface of the aluminum cylinder by coating a peripheral surface of the aluminum cylinder resinous material containing electrically conductive particles. In the cavity of the developing roller 4 is a magnetic roller with four magnetic poles (not shown). Element regulate the flow of the developer in this embodiment of the invention is a piece of urethane rubber with a hardness of approximately 65° (according to Japanese industrial standards)attached to the container 6 with the developer and held in contact with the developing roller 4 so that the pressure contact between the element for regulating the supply of the developer and the developer roller 4 is supported within 25-35 g/cm(pressure contact 1 cm length in the longitudinal direction of the developing roller 4).

In this embodiment of the invention the developer T contained in part (container) for the content developer is a one-component magnetic toner with negative own electric polarity (which hereinafter will be referred to simply as toner). The ingredients of the toner are of the binder resin, the main ingredient of which is a polyester resin and a magnetic substance, which in this embodiment of the invention represented by iron oxide. The iron oxide in this embodiment contains 0.1 to 2.0 wt% Si and 0.1 to 4.0 wt.% Zn. In the production of these ingredients are mixed, melted and cooled. Then the cooled mixture is sprayed using a mechanical sprayer under temperature control for the surface treatment of the obtained particles. Then, the obtained particles are sorted by an air stream, receiving the developer having the average particle diameter of 5.0 μm. Then the developer with an average particle diameter of 5.0 μm is mixed with 1.3 mass parts of silica, i.e. hydrophobic substances in the form of small particles, and from 1.0 mass part of strontium titanate, receiving the developer T, the average particle diameter is from 5.0 to 7.0 μm (about 6 microns).

When the gap between the photoresistive drum 1 and developing roller 4 is, for example, priblisitelno μm, developing bias supplied to the developing roller 4, is created by a combination of DC voltage, comprising -550 - -400 V, and the AC voltage of rectangular shape with a swing voltage of 1600 V and a frequency of 2600 Hz.

In part for the maintenance of the developer, that is, in the container 6 for toner are means 7a and 7b for stirring the toner. Means 7a and 7b for mixing toner rotates at two revolutions for three seconds and one revolution per second, respectively directing the toner in the area of development and at the same time loosening the toner T in the container for toner.

The charging roller 2 includes a metal core and a layer of electrically conductive elastic material, formed on the peripheral surface of the metal core. He is rotatably retained at the target in the longitudinal direction of the metal core being in contact with the peripheral surface of the photoresistive drum 1 in such a way that between the peripheral surface of the photoresistive drum 1 and the charging roller 2 is supported by contact pressure of a specified value. It rotates due to the rotation of the photoresistive drum 1.

To the charging roller 2 from the high voltage source device 100 of image formation through the metal core is a combination of (Vac + Vdc) with the component Vac of the AC voltage component Vdc of DC voltage. In the result, the peripheral surface of the photoresistive drum 1, which is reported rotation, uniformly charging the charging roller 2. In relation to the magnitude of the voltage component Vac of the AC voltage exceeds twice the threshold voltage for charging photoresistive drum 1.

More specifically, the charging bias applied to the charging roller 2, is a combination of DC voltage in the range -720 - -520 V and an alternating voltage of rectangular shape with a frequency of 2500 Hz and the current value of the AC 1900 mA. In the peripheral surface of the photoresistive drum 1 is charged to a potential Vd in the range of -700 - -500 Century, a Constant voltage is maintained constant voltage level, while the AC voltage is applied so that the current remains constant. When in a given point of the charged portion of the peripheral surface of the photoresistive drum 1 exhibit light of the laser beam, level potential VL at this point is reduced to -200 - -100 V, and this point (level potential VL) is shown in inverted form.

Cylindrical photoresistive drum 1 as an element bearing the latent image is rotated around its axis held from the main structure of the device 100 of image formation, in the direction of the landscapes of the arrow. The device 100 of image formation in this embodiment of the invention operates with two speeds (V) processing, that is, the speed with which moves a given point of the peripheral surface of the photoresistive drum. More specifically, it may be reported to the rotation speed of 270 mm/sec (Va) or 135 mm/s (Vb).

After the specified portion of the peripheral surface of the photoresistive drum 1 is uniformly charged with the charging roller 2, in this part of the exposure device 3 forms a latent image. Then on the portion of the peripheral surface of the photoresistive drum 1, which has just been formed latent image, a developing roller 4, which is an important part of the developing device supplies the developer So In the hidden image is revealed with the conversion into a visible image. Developing roller 4 is connected to a source (not shown) energy shift, which makes the impact of a combination of DC bias voltage and an AC bias voltage between the photoresistive drum 1 and developing roller 4 in such a way that between the photoresistive drum 1 and developing roller 4 is applied the necessary processing offset.

The image of the toner on the photoresistive drum 1, that is, the image formed on futures stepmom drum 1 through a transformation in visible form the latent image using toner T during the above operations, transferred to the carrier 20 image (s)such as a sheet of printing paper transferring roller 8. The carrier 20 of the image is served in the main design of the device 100 of the image-forming feed roller 21 and is sent to the transferring roller 8 when you synchronize its movement with the movement of the image of the toner on the photoresistive the drum 1 by means combining roller 22. Then the image of the toner or the image formed by the toner T is transferred to the carrier 20 of the image and sent to the media image 20 in the fixing device 11. In the fixing device 11, the image of the toner on the carrier 20 of the image is fixed on the carrier 20 of the image by applying heat and/or pressure, turning into a permanent image. Meanwhile, part of the toner T, which remains on the photoresistive drum 1, that is, part of the toner T, which is not transferred, removed the cleaning blade 9 and is contained in the container 10 for the waste toner. After that part of the peripheral surface of the photoresistive drum 1, from which it is removed residual toner T, re-charging the charger 2 and undergoes the above-described operations.

Next will be described storage medium, i.e. the mass storage device of the printing cartridge is mounted in the above-described bechtolsheimer.

In the case of this embodiment of the invention the cartridge is provided with a storage device 30 and the transmitting means 35, which comes in contact with the probe tool 36 and the recording medium 37 the basic design of the device forming an image at a specified location and transmits the information contained in the storage device 30, the CPU, which means 40 controls. The storage device 30 and the transmitting means 35 is located on one of the side walls of the container 10 for the waste toner when the cartridge is in the correct position in the main structure of the device 100 of image formation, the transmitting means 35 of the cartridge directly opposed to the readout means 36 controlling part and the recording medium 37 the basic structure of the device 100 of image formation. As for the choice of medium used as the storage device 30 in this embodiment of the invention, can be used without limitation any of the conventional electronic storage devices on semiconductor basis.

Reading means 36, the recording medium 37 and the transmitting means 35 together constitute a controlling/transmitting part 38 to read the information contained in storage the devices 30, and writing information in the storage device 30. The capacity of the memory 30 must be large enough to store multiple sets of data, for example data relating to the utilization of the cartridge that will be described below, the values that establish the operating conditions of the device imaging, etc.

According to the present invention, among the data recorded in the memory 30 and stored therein are data on the utilization of the cartridge C. there are No specific limitations with respect to the terms, which will be expressed by the coefficient of use of the cartridge. For example, it may be the length of time during which it was used every element of the cartridge, the length of time during which accompanied the bias voltage, the amount of remaining toner, the expense of the printed images, the total number of dots formed on the photoresistive drum 1, the total length of time during which the laser for exposure to the photoresistive drum 1, the thickness of the photoresistive layer of photoresistive drum 1, the value obtained by combining the values of two or more factors of the above factors, etc.

In addition, the memory 30 may store a threshold value for comparison with the total valitsinkirjaimet use cartridge and values, defined technical requirements for the operation of the cartridge when reaching the total value of the coefficient of use of the cartridge, one of the thresholds. These data are stored in advance in the memory when the print cartridge direct to the consumer from the factory, or in similar circumstances. Threshold values are data related to the distribution of time intervals with which the switch operating settings. In other words, they are the values with which compares the length of time during which it was used every element of the cartridge, the length of time during which the applied bias voltage, the amount of remaining toner, the expense of the printed images, the total number of dots formed on the photoresistive drum 1, the total length of time during which the laser for exposure to the photoresistive drum 1, the thickness of the photoresistive layer of photoresistive drum 1, the value obtained by combining the values of two or more factors of the above factors, etc. for installation of pre-defined values in accordance with the technical operating requirements the cartridge.

Data based on which set of values corresponding technical the im requirements, transmitted to the control and management tool transmits signals corresponding to the data in the processing elements, setting installation (values)corresponding technical standards of operation for the processing elements. More specifically, work factors, which should be set to certain values are constant voltage as a component of the charging bias, an alternating voltage as a component of the charging bias, a constant voltage as a component of the developing bias, illumination, which affects photoresistive drum 1 exposure tool, etc.

The threshold value against which the total value of the coefficient of use of the cartridge, and the data for the job of working installations are of such values that correspond to characteristics of the cartridge. They are determined based on the capacity of the cartridge, types photoresistive drum, toner and the charging roller, production batches photoresistive drum, toner and the charging roller, and similar factors.

These datasets on the basis of which specify the technical requirements for the device imaging, individually stored in two or more memory storage devices, one in each. More specifically, the technical requirements of the operation are the performance and processing speed of the device forming the image. Here the performance is the number of the printed images that can be produced per unit of time, and processing speed refers to the rotational speed of photoresistive drum.

In the embodiment of the present invention, which will be described below, for the above two processing speeds Va and Vb are prepared and stored in the memory, one or two set of data, which specify the technical requirements for operation of forming the image.

Next will be described the technical requirements for the operation of the device forming the image corresponding to this option.

The device forming the image in this embodiment of the invention operates with the above two processing speeds Va and Vb. The speed Va of processing exceeds the speed Vb of the processing (Va=2×Vb). The device forming the image are arranged so that the processing speed can be toggled by the user by means not shown control panel, device imaging. The device forming the image may be arranged so that the team could be transmitted from the host computer or similar means, connected to the device forming the image for switching the speed of processing.

Famous is, the speed change processing device, image formation affect the characteristics of the image forming device; more specifically, the processing speed affects the thickness of the line, which reflects the value of the coefficient of use of the cartridge. Figure 3 shows the relationship between the thickness of the line (four point × six spaces)formed with a resolution of 600 dpi, and processing speed (speed Va and Vd). From this graph, it follows that the higher the processing speed, the smaller the thickness of the line. As expected, one reason for this phenomenon is that the higher the processing speed, the shorter the transit time of the latent image through the developing gap (the area in which the distance between the peripheral surfaces of the photoresistive drum and the developing roller is the smallest) and, thus, the less dispersed with the developing roller of the toner particles. It is assumed that another reason for the above phenomenon is that the higher the processing speed, the shorter the time for the passage of toner particles on the developing roller through the zone of contact between the developer plate and the developing roller, and thus the less likely the charge of the toner particles.

Thus, in this embodiment of the invention, when the total value of the coefficients And the and use photoresistive drum reaches a threshold, stored in memory, the following operations are carried out in the order listed for switching the DC voltage, as a component of the creation of the charging bias, and the DC voltage, as component creation processing offset:

(1) reading from the memory the value And utilization of photoresistive drum.

(2) the Comparison is read from the memory value And the threshold value stored in memory.

(3) Selecting data to set the value of the DC voltage component of the creation of the charging bias and the values of the DC voltage component of creating developing bias in accordance with the speed of processing.

(4) Measurement of the duration of time of applying an alternating voltage component of the creation of the charging bias and the length of time of rotation of the photoresistive drum.

(5) the Transfer of control signals in a power source for applying DC voltage component of the creation of the charging bias, and the energy source for applying DC voltage component of the creation processing of the offset.

(6) Obtaining values of utilization photoresistive element during the preceding operation of forming the image by summing the values poluchennogo is multiplied by a weighting factor to the measured length of time of rotation of the photoresistive element, with the measured duration of time of applying the DC voltage component of the creation of the charging bias.

(7) the Computation of the value of A, that is, values that reflect the influence of processing speed, which was used photoresistive drum, using arithmetic coefficient, characteristic for each speed processing, to account for the influence of processing speed.

(8) Recording in memory, as the new values And the values obtained by summing the values And reflecting the influence of processing speed, which was used photoresistive element during the preceding operation of forming the image, and the values a, i.e. the total value of the utilization rate photoresistive element read from the memory.

When using the above operations, a constant voltage as a component of creating a charging bias and a DC voltage as a component of creating a development bias is a voltage that can be changed, when the total value of the utilization rate of the drum reaches the threshold value stored in memory. Thus, it is possible not only to support virtually stable thickness of the line regardless of the processing speed, but also can reduce the deviation from which is formed and the image.

Next, with reference to figure 4 and 1 will be described the configuration in this embodiment of the invention for managing storage device.

As shown in figure 4, the cartridge is provided with a storage device 30, which is located so that when the cartridge is in the correct position in the basic design of the device forming the image storage device 30 is in contact with the probe tool 36 and the recording means 37 of the core structure. The tool 40 control, which is the Central processor, equipped with proper control part 41, an arithmetic part 43 to determine the duration of rotation of the photoresistive element part 44 to determine the duration of applying the charging bias, etc. Although figure 4 shows a configuration in which the retrieving tool 36 and the recording medium 37 are located separately, these two tools can be combined in one tool, made with the possibility of implementation as a function of reading and writing functions.

The tool 40 control connected to the source 50 of DC voltage for applying the charging bias source 60 DC voltage for applying developing bias, a means 70 for messages rotational motion photoresistive the drum and means the m 80 to determine the size of the sheet of media images.

Source 50 energy for applying the charging bias is part 51 for regulating DC and part 52 for applying a high voltage. The source 60 energy for applying developing bias has a part 61 for regulating DC and part 62 for applying a high voltage. The management of the units 51 and 61 for regulating DC both parts 50 and 60, respectively, is carried out by control signals from the means 40 controls to regulate the displacement reported by the charging roller 2 and the developing roller 4.

The means 70 for controlling the actuation of photoresistive element has a portion 71 for controlling the speed and the drive part 72. Drive part 72 is made of, for example, in the form of an electric motor (not shown), and part 71 for speed control is executed, for example, in the form of a circuit to actuate the motor. The tool 70 to actuate the photoresistive element regulates, that is, alters or maintains performance characteristics such as speed of processing, more specifically the speed at which the driven photoresistive the drum in response to the control signals from the means 40 of the control.

The tool 80 determine the size of the sheet is performed, for example, in the form of a sensor (not shown) to determine the RA is a measure of the sheet of media images. It determines the sheet size of the media image, when the sheet is served in the main design of the device forming the image, and transmits the signal, which displays a specific sheet size in the tool 40 control, which controls the operation of forming the image in accordance with the signal on the size of the sheet received from the means 80 for determining the size of the sheet.

Figure 1 shows a variety of data sets stored in the memory 30. In memory 30 stores various data. In this embodiment of the invention stores at least the following data: the value And utilization of photoresistive drum; the coefficients ka and kb (weighting factors for the length of time of rotation of the photoresistive element) for arithmetic formulas for calculation of the utilization rate of the drum; odds ⊘and ⊘b (weighting factors for the speed of processing); the threshold values Bj and Bk for the coefficient value using photoresistive element; data Cai, Caj and Cak (for speed Va processing) to set the value of the DC voltage component of the creation of the charging bias; threshold Bbi, Bbj and Cbk (for speed Vb handle) to set the value of the DC level as a component of creating a charging bias; data Dai, Daj and Dak (DL the speed Va processing) to set the value of the DC level as a component of creating a development bias; and data Dbi, Dbj and Dbk (for speed Vb handle) to set the value of the DC level as a component of creating a processing bias. The coefficients for the arithmetic formula, the threshold value for the magnitude of the coefficient using photoresistive element and data (DC voltage to create a charging bias and a DC voltage to create a developing bias) is these values that match the characteristics of the cartridge, which is mounted storage device 30. In addition, the data set for the same speed of processing differs in value from the set of data to another processing speed. These datasets write and memory during manufacture of the cartridge.

In table 1 are the threshold values for the coefficient value using photoresistive element and the data for setting the machining conditions.

Table 1.
The value And use of the coefficient of the drum (sec.)0450 (=Bj)1800 (=Bk)
Data for the DC / DC developing biasCaiCajCak
Speed Va processingData for postoyanno the voltage for charging bias DaiDajDak
Data for the DC / DC developing biasCbiCbjCbk
Speed Vb processingData for DC voltage for charging biasDbiDbjDbk

Storage device and the main design of the device forming the image configured so that the data contained in the memory may be transferred at any time from the memory in the arithmetic part 42 means 40 controls the basic structure and Vice versa. Calculations are made on the basis of these data, and to data drawn actually managing part 41.

The length of time of applying the AC voltage and the length of time of rotation of the photoresistive element measured from the main structure in the course of performing the print operation, and the value of the coefficient using photoresistive drum 1 during the just-completed operation of image formation is calculated upon completion of rotation of the photoresistive drum 1. The values obtained during the calculation, are stored in memory, replacing the old value.

The value And utilization of photoresistive element is iraiti following arithmetic formula:

A=⊘×(ta1÷ka×ta2)+⊘b×(tb1+kb×tb2),

where ta1 is the length of time of applying the AC voltage to generate a charging bias at a speed of Va treatment;

ta2 is the length of time of rotation of the photoresistive element at a speed of Va treatment;

tb1 is the length of time of applying the AC voltage to generate a charging bias at the speed Vb of the treatment;

ta2 is the length of time of rotation of the photoresistive element at a speed Vb processing.

Here the values for the substitution of the coefficients ka, kb, ⊘a ⊘b taken from table 2, and the reason for this will be described below.

Table 2.
Weighting factor for speed Va processing⊘a1,0
Weighting factor for speed Vb processing⊘b0,50
Weighting factor for time rotation speed Vaka0,40
Weighting factor for time rotation speed Vbkb0,20

The authors of the present invention, investigating the impact of working time photoresistive drum and the length of time and applying voltage to the photoresistive element on the used resource photoresistive drum, more specifically, the amount of grinding of the photoresistive surface of the drum in the unit of image formation in this embodiment of the invention in the sequence of image formation, found that when the processing speed consistent with the speed Va, the influence of the duration of applying an alternating voltage as a component of creating charger offset by the amount of the filing of the photoresistive drum was approximately two to three times more influence duration of rotation of the photoresistive drum by the amount of the filing of the photoresistive drum.

When applying an alternating voltage component of the charging bias, the polarity of the peripheral surface quickly reversed, causing the alternate occurrence of electrical discharges in one direction and in the opposite direction and thus substantial damage to the peripheral surface of the photoresistive drum. The damaged portion of the peripheral surface of the photoresistive element worn down by the friction between the photoresistive element and elements such as a cleaning blade that is in contact with the photoresistive element.

For comparison, when the processing speed consistent with the speed Vb, the influence of the length of time is prikladyvanie alternating voltage component of the creation charger offset by the amount of the filing of the photoresistive drum was approximately 4-6 times more influence the length of time of rotation of the photoresistive drum by the amount of the filing of the photoresistive drum. It can be assumed that the reason for this phenomenon is that when the processing speed consistent with the speed Vb (two times less than the speed Va of the processing), the distance that a given point of the peripheral surface of the photoresistive element passed per unit of time, was half the distance that a given point of the peripheral surface of the photoresistive element passed per unit of time when the processing speed consistent with the speed Va, which thus reduces the frequency with which a given point of the peripheral surface of the photoresistive drum luciaetta cleaning blade, etc. Thus, the amount by which statives peripheral photoresistive surface of the drum, when the processing speed consistent with velocity Vb, was approximately half the value that was statives peripheral photoresistive surface of the drum, when the processing speed consistent with the speed Va.

The above described results of tests conducted by the authors of the present invention when it was applied organic photoresistive element, in which the main binder of the surface layer (photoresistive layer was a mixture of acrylate and polycarbonate, and in which photoresistive the th element is cleaned by the cleaning blade.

Figure 5 shows the relationship between the difference of the levels of the potentials and the thickness of the line. Here the difference between the levels of the potentials of mean absolute value of the difference between the level of the potential of the DC voltage component of the developing bias and the potential level V1 of the peripheral surface of the photoresistive drum.

As will be seen from figure 5, the potential difference and the thickness of the line show a significant degree of correlation; the magnitude of the thickness change line 10 In the DC voltage component of the developing bias is in the range of 2-5 (μm/10). Thus, all that is required to compensate for the influence of the print cartridge status With the thickness of the line, this regulation specified the difference between the levels of the potentials. In this embodiment of the invention as a means changes the difference between the levels of the potentials used method, according to which changes DC voltage as a component of creating a development bias, and the DC voltage as a component of the creation of the charging bias.

Next, with reference to Fig.6-1, 6-2 and 6-3, which are a flowchart of the sequence of operations will be described the operation of image formation in this embodiment of the invention. The device forming the image in this embodiment, from which retene configured so that the processing speed may be changed in accordance with the sheet size of the media image. It is a device for the formation of images in which when using the sheet of media images smaller than normal size, processing speed is reduced to Vb (1/2 Va) to prevent the problem lies in the fact that when the sheet of paper smaller images passes through the fixing device, the temperature in the gap between the fixing rollers in the areas not occupied by passing the sheet becomes too high.

Data for setting the machining conditions relating to the specified block diagrams of a sequence of operations, and values, at the level which has a processing condition in accordance with the flowchart of the sequence of operations shown in table 3.

Table 3.
Data in memoryProcessing condition
Data relatedCai- 683
to constantCaj- 665
voltageCak- 595
component creationCbi- 623
the charging biasCbj - 604
Cbk- 585
Data relatedDai- 513
to constantDaj- 495
voltageDak- 425
component creationDbi- 453
processorDbj- 434
offsetDbk- 415

Next will be described the operation of image formation in this embodiment of the invention from the moment of introduction of the signal of the beginning of printing until it exits the printed image corresponding to a signal to start printing.

S101: Introduction to signal the start of printing.

S102: the definition of the control part 40 is also larger than the width (length in the longitudinal direction of the fixing roller) of the carrier 20 images in a feed cassette width of the sheet of the A4 size.

(1-1) Case 1: If during the operation S102 it is determined that the width of the carrier 20 of the image is not less than the width of the sheet of the A4 size

S103: Install control part 40 speed processing device corresponding to the "Va".

S104: the Beginning of the measurement part 43 to determine the duration of applying the charging bias and a part 44 defined for the I duration of rotation of the photoresistive element duration of applying the charging bias, and duration of rotation of the photoresistive element.

S105: the Reception control part 40 of the storage device, information on the size And utilization of the drum.

S106: the definition of the control part 40 that value And does not exceed the value of Bj (A<Bj), and when the response is "No", the operation S110; Bj is the threshold value of the utilization rate of the drum (figure 3).

S107: the Reception control part 40 "Cai data related to a constant voltage as a component to create a charging bias", and "data Dai pertaining to the constant voltage as a component to create a developing bias, and the output changes the DC voltage component of the creation of the charging bias, and the DC voltage component of the creation processing of the shift controlling part 61 for regulating the DC voltage of the energy source for applying developing bias and the control part 51 for regulating the DC voltage of the energy source for applying a charging bias.

S108: Setting of constant voltage, as a component of creating a developing bias to the level - 513 Century

S109: installing a DC voltage component of the creation of the charging bias to the level - 683 Century

(1-2) Case 2: If during the operation S106 (A<Bj) answered "No"

S110: the definition of the control part 40 that led the rank And not exceed the value of Bk (A< Bk), and when the response is "No", the operation S114; Bk is the threshold value of the utilization rate of the drum (figure 3).

S111: the Reception control part 40 "data Caj related to the constant voltage as a component to create a charging bias" and "data Daj related to the constant voltage as a component to create a developing bias, and the signal changes to a constant voltage, as a component of creating a developing bias to the control portion 61 for regulating the DC voltage of the energy source for applying developing bias, and signal changes the DC voltage component of the creation of the charging bias to the control part 51 for regulating the DC voltage of the energy source for applying a charging bias.

S112 (:installing a DC voltage component of the creating developer bias level 495 Century

S113: installing a DC voltage component of the creation of the charging bias to the level - 665 Century

(1-3) Case 3: If during the operation S110 (A<Bk) answered "No."

S114: the Reception control part 40 "data Cak related to the constant voltage as a component to create a charging bias" and "data Dak related to the constant voltage as a component to create a developing bias, and the signal change is permanent voltage as a component of creating a development bias to the control portion 61 for regulating the DC voltage of the energy source for applying developing bias, and signal changes the DC voltage component of the creation of the charging bias to the control part 51 for regulating the DC voltage of the energy source for applying a charging bias.

S115: Setting of constant voltage as a component of creating a processing bias for level - 425 C.

S116: installing a DC voltage component of the creation of the charging bias to the level - 595 Century

(1-4) Case 4: If during the operation S102 it is determined that the width of the carrier 20 of the image does not exceed the width of the sheet of the A4 size.

S117: Install control part 40 speed processing device corresponding to "Vb".

S118: the Beginning of the measurement part 43 for determining the length of rotation of the photoresistive element and a part 44 to determine the duration of applying the charging bias duration of rotation of the photoresistive element and the duration of applying the charging bias.

S119: the Reception control part 40 of the storage device, information on the size And utilization of the drum.

S120: Determination control part 40 that value And does not exceed the value of Bj (A<Bj), and when the response is "No", the operation S124; Bj is the threshold value of the utilization rate of the drum (figure 3).

S121: the Reception control part 4 "Cbi data, related to the constant voltage as a component to create a charging bias", and "Dbi data related to a constant voltage as a component to create a developing bias, and the output of signal changes the DC voltage component of the creation processing of the shift controlling part 61 for regulating the DC voltage of the energy source for applying developing bias, and the output of signal changes the DC voltage component of the creation of the charging bias to the control part 51 for regulating the DC voltage of the energy source for applying a charging bias.

S122: Setting of constant voltage as a component of creating a processing bias for level - 453 Century

S123: installing a DC voltage component of the creation of the charging bias to the level - 623 Century

(1-5) Case 5: If during the operation S120 (A<Bj) answered "No."

S124: the definition of the control part 40 that value And does not exceed the value of Bk (A<Bk), and when the response is "No", the operation S128; Bk is the threshold value of the utilization rate of the drum (figure 3).

S125: the Reception control part 40 "data Cbj related to the constant voltage as a component to create a charging bias", and "data Dbj related to the constant voltage as a component created what I processor offset", and issuing a signal changes the DC voltage component of the creation processing of the shift controlling part 61 for regulating the DC voltage of the energy source for applying developing bias, and the output of signal changes the DC voltage component of the creation of the charging bias to the control part 51 for regulating the DC voltage of the energy source for applying a charging bias.

S126: Setting of constant voltage as a component of creating a processing bias for level - 434 Century

S127: installing a DC voltage component of the creation of the charging bias to the level - 604 Century

(1-6) Case 6: If during the operation S124 (A<Bk) answered "No."

S128: the Reception control part 40 "Cbk data related to a constant voltage as a component to create a charging bias", and "data Dbk related to the constant voltage as a component to create a developing bias, and issuing a control signal to the control portion 61 for regulating the DC voltage of the energy source for applying developing bias, and issuing a control signal to the control part 51 for regulating the DC voltage of the energy source for applying a charging bias.

S129: installing a DC voltage component creation processing when edenia on the level - 415 Century

S130: installing a DC voltage component of the creation of the charging bias to the level - 585 Century

S131: the Beginning of the operation of the real formation of the image.

S132: the completion of the operation of the real formation of the image.

S133: Calculation control part 40 of the quantity And utilization of photoresistive drum, reflecting the weighting coefficients by summing the duration of applying an alternating voltage component of the creation of the charging bias, and duration of rotation of the photoresistive element by multiplying the duration of rotation of the photoresistive element on the weighting coefficients (ka and kb), and multiplying the sum by the weighting coefficients (⊘and ⊘ (b)that reflect the difference in processing rates. Then the sum (a+a) is recorded in the memory of the recording medium as the total value of the coefficient of use of the drum, which completes the sequence control (End).

Figure 3 dash-dotted line presents the changes in the thickness of the lines that arise when implementing the above control.

This line on figure 3 shows that the thickness of the line remains in the range of 180-200 microns, that is in the proper range. This proves that the device forming the image in this embodiment of the invention which allows a stable image quality.

As described above, according to this variant implementation of the present invention, before the real operation of image formation is not only regulated in accordance with the processing speed of the DC voltage as a component of creating a charging bias and a DC voltage as a component of creating a processing bias, but also compares the total value of the coefficient of use of photoresistive drum in this printing cartridge with defined threshold values, which reflect the characteristics of photoresistive drum, and if the total value of the coefficient of use of photoresistive drum has reached one of the thresholds or above, the constant voltage as a component of creating a charging bias and a DC voltage as a component of creating a processing bias, adjustable the level of capacity based on a table prepared in accordance with the characteristics of the printing cartridge. Thus, this variant of the invention can provide stabilization of the imaging device in relation to the thickness of the line.

In addition, instead of a set of values corresponding to one set of speed of processing, memory remains the same value as the value of the utilization factor f is coresistance drum, obtained by correcting the measured utilization photoresistive drum speed processing, which thus frees the memory.

In this embodiment of the invention uses two thresholds for data about the utilization of the drum. However, there may be used three or more threshold values depending on the structural characteristics, the condition of the processing can be adjusted more precisely.

In addition, in this embodiment of the invention for changing the machining conditions are changed levels of charging and processor voltages. However, in some cases may change the frequency of the AC developing bias and/or illumination when projecting. In addition, the quality of data on the utilization rate of the drum is used arithmetic formulas. However, as data on the utilization of the drum can be used only account of the printed images or duration of rotation photoresistance element.

Option 2

In this embodiment of the invention instead of a separate save in-memory dataset to set the DC level as a component of the creation of the charging bias and the data set to set the level constant the voltage as a component of creating a development bias two sets of data are combined and stored as one data set. 7 shows memory in this embodiment of the invention. Reference characters Eai, Eaj, Eak, Ebi, Ebj and Ebk are many sets of combined data one by one. Thus, when the management tool accepts one of these sets of the combined data, it passes the control signals in the control part to control the energy source for applying a constant voltage as a component of the charging bias and a control part to control the energy source for applying DC voltage component of the developing bias.

When combining data for setting the level of the DC voltage component of the charging bias with the data to set the level of the DC voltage component of the developing bias they should be combined so that the contrast of the symptoms could vary while maintaining approximately constant the contrast of the background to prevent the formation of fog.

Table 4 shows the combined data, the values for the DC voltage component of the charging bias corresponding to the combined data, and the values for the DC voltage component of the developing bias corresponding to the combined data.

Table 4.
The data contained in memoryConstant voltage as a component of the charging biasConstant voltage as a component of the developing bias
Combined dataEai- 683- 513
constant voltageEaj- 665- 495
component chargerEak- 595- 425
bias and DCEbi- 623- 453
the voltage as a componentEbj- 604- 434
developing biasEbk- 585- 415

When the above conditions can be realized not only the advantage of the first variant of the invention, but it is also possible to carry out the management of multiple processing units in accordance with each stored data set that specifies the processing condition, which thus frees the memory.

Data for specifying the processing conditions in the above embodiments of the invention may be such data, which is used in connection with the data in the table in regulation of the print density, which provided the basic design of the device forming the image, to give the user the possibility to adjust the print density. In this case, the data stored in the memory, are such data that can be used to set the level of the print density corresponding to one of the values in the table of density regulation, which provided the basic design of the device.

In addition, the data used for changing the machining conditions can be not only a combination of DC voltage component of the creation of the charging bias and the DC voltage component of the creation processing of the offset. In other words, they can be combinations of the DC voltage component of the creation of the charging bias, a constant voltage as a component of creating a development bias, the amount of illumination during exposure, etc.

As will be clear when reading the description of embodiments of the present invention, in accordance with the present invention it is possible to compensate for changes in operating conditions, resulting from use of the resource of the cartridge, to preserve the stability of the device forming the image in terms of image quality. Thus, it is always possible to form an image site is titeling quality.

Although the invention has been described with reference to disclosed here patterns, it is not limited to the described details, and this application covers the modifications or changes that can be made to improve and are included in the scope the following claims.

1. The device forming the image, in which the cartridge and which has a capability of forming images with different speeds of image formation, and the cartridge includes a memory medium having a memory area for storing information relating to the conditions of image formation processing elements for each speed of image formation, containing the control unit to set the conditions for forming the image, and the control unit sets the conditions for the formation of image processing elements in accordance with the speed of image formation on the basis of the information stored in the memory.

2. The device according to claim 1, wherein the processing elements include at least the imaging element, and the control unit sets a condition of forming images in accordance with the speed of the imaging element.

3. The device according to claim 1, wherein the storage medium further comprises a second area is ü memory for storing information, related to the magnitude of the coefficient of use of the cartridge.

4. The device according to claim 3, wherein the storage medium further comprises a third memory area for storing information related to the threshold value of the coefficient of use of the cartridge.

5. The device according to claim 4, characterized in that the control unit changes the condition of image formation, when the information relating to the value of the utilization rate reaches the value information corresponding to the threshold value of the utilization rate.

6. The device according to claim 1, characterized in that the processing elements contain the imaging element, a charging element for the electrical charge to the imaging member and developing member for developing a latent image formed on the specified image forming element, and the conditions of image formation include the bias voltage applied to the charging element to processing element.

7. The cartridge is installed in the basic design of the device forming the image, which is performed with the possibility of the formation of images with different speeds of image formation, containing part of the processing elements to perform the operation of forming the zobrazenie, medium, and a medium that has a memory area for storing information relating to the conditions of image formation processing elements for each speed of image formation.

8. The cartridge according to claim 7, wherein the storage medium further comprises a second memory area that stores information related to the magnitude of the coefficient of use of the cartridge.

9. The cartridge according to claim 7, wherein the storage medium further comprises a third memory area for storing information relating to the threshold value information related to the magnitude of the coefficient of use of the cartridge.

10. The cartridge according to claim 7, wherein the processing elements include at least the imaging element, and the conditions of forming the image includes at least the speed of rotation of the imaging element.

11. The cartridge according to claim 7, characterized in that the processing elements contain the imaging element, a charging element for the electrical charge to the imaging member and developing member for developing a latent image formed on the imaging element, and the conditions of forming the image includes the bias voltage applied to Ariadna element to processing element.

12. The cartridge according to claim 7, wherein the storage medium further comprises a fourth memory area for storing information related to the coefficient used for calculation of the coefficient of use of the cartridge.

13. The storage medium used with the cartridge, which is installed with the possibility of removal in the basic design of the device forming the image, which is performed with the possibility of the formation of images with different speeds of image formation, and the cartridge contains a portion of the processing elements for the formation of images containing the first memory area for storing information relating to the conditions of image formation processing elements for each speed of image formation.

14. Storage environment item 13, characterized in that it further comprises a second memory area for storing information related to the threshold value of the coefficient of use of the cartridge.

15. Storage environment item 13, characterized in that it further comprises a third memory area for storing information related to the threshold value of the coefficient of use of the cartridge.

16. A storage medium according to item 13, wherein the processing elements include at least almyroudis image element and the speed of image formation include the rotation speed of the imaging element.

17. A storage medium according to item 13, wherein the processing elements include at least the imaging element, a charging element for the electrical charge to the imaging member and developing member for developing a latent image formed on the imaging element, and the conditions of forming the image includes the bias voltage applied to the charging member, or to a processing element.

18. Storage environment item 13, characterized in that it further comprises a fourth memory area for storing information related to the coefficient for calculation of the coefficient of use of the cartridge.

19. System imaging device for imaging, which is performed with the possibility of the formation of images with different speeds and which contains the basic design and the cartridge, and a forming device of the image contains a portion of the processing elements for forming images containing medium for cartridge, and a storage medium provided in the cartridge and includes a memory for storing information relating to the conditions of image formation processing elements for each speed of image formation, when this system is EMA further comprises a control unit, provided in the basic design, to set conditions for forming the image, and the control unit sets the conditions for the formation of image processing elements in accordance with the speed of image formation on the basis of the information stored in the memory.

20. The system according to claim 19, wherein the processing elements include at least the imaging element, and the speed of image formation includes the speed of the imaging element and the specified control unit sets a condition of forming images in accordance with the speed of the imaging element.

21. The system according to claim 19, wherein the storage medium further comprises a second memory area for storing information about the magnitude of the coefficient of use of the cartridge.

22. The system according to claim 19, wherein the storage medium further comprises a third memory area for storing information related to the threshold value of the coefficient of use of the cartridge.

23. The system according to claim 19, characterized in that the control unit changes the condition of image formation, when the value of information about the magnitude of the coefficient of use of the cartridge reaches the value of the information on the threshold value.

24. The system according to claim 19, featuring the jaś fact, what accessories contain elements forming the image element, a charging element for the electrical charge to the imaging member and developing member for developing a latent image formed on the imaging element, and the conditions of forming the image includes the bias voltage applied to the charging element to processing element.



 

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7 cl, 11 dwg

FIELD: physics, processing of images.

SUBSTANCE: block of image shaping comprises rotary element, knife installed with the possibility to pass, basically, parallel to direction of rotary element length and contact with rotary element or to maintain previously defined distance from rotary element, and carcass with rotary element and knife on it. Carcass contains the first and second side plates, at that the first side plate contains positioning part of the first rotary element for positioning of rotary element in previously defined position, and the first part that positions knife in previously defined position. The second side plate contains positioning part of the second rotary element for positioning of rotary element in previously defined position, and the second part that positions knife for knife positioning in previously defined position. Positioning part of the first rotary element and the first part that positions knife are molded with the help of one and the same die mold.

EFFECT: development of block, which increases accuracy of knife element positioning on roller.

12 cl, 14 dwg

FIELD: physics; photography.

SUBSTANCE: cartridge, which is detachably fitted in the main assembly of an electrophotographic image forming device, has a photosensitive drum, a developing roller and a drum unit for supporting the drum. The drum unit is positioned relative the main assembly when the cartridge is fitted into the main assembly. The device also has a developing unit, which supports the developing roller and can move towards the drum unit between the contact position, in which the developing roller and the drum touch, and the spaced position, a unit for receiving driving force of the drum, provided in the drum assembly for receiving driving force for rotating the drum from the main assembly; a moving element for moving the developing unit between the contact positiion and the spaced position, and a unit for receiving the driving force of the moving element, provided in the drum unit for receiving driving force of the moving element for moving the mobile element from the main assembly.

EFFECT: improved accuracy of positioning between a moving element for moving a developing unit and the developing unit.

12 cl, 12 dwg

FIELD: physics.

SUBSTANCE: process cartridge which can be removed from an image forming apparatus has an electrophotographic photosensitive element, an element for transporting the developer for developing an electrostatic latent image formed at the electrophotographic photosensitive element, a developer frame element which supports first and second longitudinal ends of the developer transporting element with possibility of turning, a frame element for the photosensitive element which supports the electrophotographic photosensitive element at the first end with possibility of turning and supports the developer frame element at the first end with possibility of rotation, and a carrier element attached to the frame element of thee photosensitive element at the second end, wherein the carrier element supports the electrophotographic photosensitive element at the second end with possibility of turning and supports the developer frame element at the second end with possibility of rotation. The carrier element used in the process cartridge and a method of assembling (2 versions) and dismantling (2 versions) the process cartridge is realised using the device given above.

EFFECT: design of a process cartridge having fewer components and which can be easily assembled and dismantled.

41 cl, 12 dwg

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