Measurement device, method of measurement and image generation device

FIELD: instrument making.

SUBSTANCE: unit of toner amount measurement radiates image developed by toner with light, and unit to capture image developed by toner captures image according to reflected wave corresponding to light reflected by image developed by toner. Then amount of applied toner is calculated on the basis of peak position or height of reflected wave peak in compliance with information related to density of generated image developed by toner.

EFFECT: measurement of amount of applied toner in wide range from range of low densities to range of high densities, reduced dimensions of device.

16 cl, 27 dwg

 

The technical field to which the invention relates.

This invention relates to a measuring device, measuring method and device imaging, and more specifically to the measurement of the amount of toner deposited on the image bearing element of the device forming the image.

The level of technology

In the electrophotographic device of image formation, even when the image formation is carried out in the same conditions, the density of the formed image is not constant. This is due to the influence of deviations of the various parameters of image formation, such as deviations of the magnitude of the electric charge of the toner, the sensitivity of the photosensitive element and the transfer efficiency of toner and variance of environmental conditions such as temperature and humidity.

Therefore detect the density or height of the image shown by the toner, which appeared on a photosensitive member or the intermediate transmitting element, and on the basis of the detection perform feedback control various parameters of image formation, such as the supply of toner and the potential of its charge, the amount of exposing light and the voltage of the developing bias.

For example, the invention is according to U.S. patent No. 2956487 proposed to detect potential created electrostatic latent image formed by placing on a photosensitive element, or image density inherent in the image shown by the toner obtained by the manifestations of the electrostatic latent image, to compare the value of the detection reference value and to control the density of the image in accordance with the comparison result. In addition, in the invention according to U.S. patent No. 4082445 asked to compare the difference between the quantity of light reflected on the area where no image at the photosensitive element, and the amount of light reflected on the reference image displayed by the toner, with a reference value and to supply the toner in accordance with the result of the comparison.

Figure 1 presents a view illustrating a General method of measuring the amount of reflected light. Invoice sensor 25 includes a light emitting diode (LED) 25A, which emits near infra-red light as the light-emitting element, and a photodiode (PD) 25b as a sensor and measures the amount of light reflected from the reference image 26, shown by the toner. In other words, the sensor 25 measures the amount of applied toner, mainly using the amount of specularly reflected light.

In figure 2 represent the priority schedule, showing the sensor output of the spectrophotometer model 530 supplied by the company X-Rite. As shown in figure 2, the amount of deposited toner can be measured on the basis of the output signal of the sensor within a density range of from 0.6 to 0.8. However, the change in amount of reflected light in relation to the change in density of the toner is small in the range of high density. It is difficult to accurately measure the amount of applied toner on the basis of the difference between the amounts of reflected light on the entire density range.

In lined with the Japan patent No. 2003-076129 described the invention in which it is proposed to measure the amount of applied toner in the range of high densities by introducing polarized light. Figure 3 presents a view showing the layout of the add-on sensor 25' laid out according to the Japan patent No. 2003-076129. In addition to the CID 25A, which emits near infra-red light, and PD 25b invoice sensor 25' includes PD 25C and 25d and prism 25th and 25f.

Light emitted by SIDA 25A, is divided by the prism 25th on components (S-waves), which oscillate in the direction perpendicular to the plane of incidence, and components (P-waves), which oscillate in a direction parallel to the plane of incidence. Separated S-wave occurs in FD 25s, and separated P-wave strikes the reference is in the image 26, shown by the toner. P-wave, which strikes against the reference image 26, shown by the toner undergoes diffusive reflection, and some of its constituents are converted into components of S-waves. Light reflected from the reference image 26, shown by the toner, is divided into S - and P-wave lens 25f. Separated S-wave falls in PD 25d, and the separated P-wave falls in PD 25b.

Figure 4 presents a graph showing an output signal (curve C) of the FD 25b and the output signal (curve D) of the FD 25d. The amount of specularly reflected light (P-wave), is represented by the curve B, is adjusted by the amount of diffusion of light (S-wave), which is obtained amount of reflected light (curve H), in which the influence of the diffusion reflection excluded. In this method, the amount of deposited toner can be measured to a density of about 1.0, but it is impossible to measure a higher density.

On the other hand, a method involving the use of laser measuring displacement transducer (see laid out the Japan patent No. 4-156479 and paved the Japan patent No. 8-327331). On figa and 5B are presented, demonstrating laser measuring transducer 24 move, and figure 6 presents a graph showing the result of measuring the amount of deposited toner using La the cluster transducer 24 is moved.

Laser measuring transducer 24 move can measure the change in height (thickness) of the laminated layer toner (see figa). However, in a point or line drawing, extending the range of the backlight shown In figure 5, the layers of the toner become intermittent. That is, as shown in Fig.6, the number of deposited toner in the density range where the toner layers are continuous, can be measured accurately. However, the amount of applied toner in the range of low densities, where the layers of the toner become intermittent, just cannot be measured.

As described above, when using the invoice sensor, it is difficult to measure the amount of applied toner in the range of high density, and when used laser measuring displacement transducer, it is difficult to measure the amount of applied toner in the range of low densities. Therefore, to accurately measure the amount of applied toner on the whole range of density, use and invoice sensor, and laser measuring displacement transducer, so that the invoice sensor is used for a range, not a range of high density, and laser measuring displacement transducer is used for a range of high density. However, this increases the cost and size of the device is formirovaniya image.

The invention

In one aspect, a method for measuring the amount of the toner image displayed by the toner formed on the raw image element, device imaging, which is irradiated with the light of the image displayed by the toner; capture the image shown by the toner, using a variety of sensors that are located next to each other; receive information associated with peak positions of the reflected waves, and information related to the amounts of light reflected waves, from the data obtained by receiving light reflected by the image shown by the toner through a set of photodetectors; and calculate the amount of toner on the basis of at least one of the provisions of the peak, the amount of light and information related to the density of the formed image shown by the toner.

In accordance with the aspect obtained satisfactory results measuring the amount of applied toner in a wide range from low density to high density.

Additional characteristics of this invention will become more apparent upon consideration of the following description of possible embodiments, given with reference to the accompanying drawings.

Brief description of drawings

The piano is D.1 presents the view demonstrating the common way of measuring the amount of reflected light.

Figure 2 presents a graph showing the sensor output of the spectrophotometer model 530 supplied by the company X-Rite.

Figure 3 presents a view showing the layout of the add-on sensor in General.

Figure 4 presents a graph showing the output signal of the photodiode.

On figa and 5B are presented, demonstrating laser measuring displacement transducer.

Figure 6 presents a graph showing the result of measuring the amount of deposited toner with a laser measuring transducer movement.

Figure 7 shows the block diagram of the device forming the image in accordance with the embodiment.

On Fig presents a block diagram showing the layout of the unit images.

Figure 9 presents a block diagram showing the arrangement of the unit of measurement amount of toner.

Figure 10 presents a view to explain the method of measuring the amount of deposited toner on the spots of toner formed by the modulation method is covered square.

Figure 11 presents a block diagram showing the arrangement of the signal processing unit.

On Fig presents a graph for explanation of a curve approximation on the basis of the AI Gaussian function.

On Fig presents a view showing an example of patch pattern formed on the bearing element.

On figa-14D are presented, illustrating the laminated toner.

On figa-15F are presented, demonstrating the example of sector profiles superimposed pattern.

On figa and 16B presents graphs showing examples of results of the measurement patch image.

On figa and 17B shows the graphs for explanation of the reflected waves issued from the analog-to-digital Converter unit of measurement amount of toner.

On Fig presents a flowchart of the sequence of steps to explain the arithmetic operation to determine the amount of deposited toner by the arithmetic unit determining the amount of toner.

On Fig presents a graph showing the level shift detection methods with respect to the maximum distance between the points defined by the resolution (value and angle of the screen frequency).

On Fig presents conversion table of a difference of provisions in the amount of toner showing an example of the relationship between the value of the signal density and differential provisions.

On Fig presents conversion table of the difference of the amounts of light in the amount of toner showing an example Zaimov the bond between the signal value of the density and the difference between amounts of light.

On figa and 22B presents graphs showing an example of characteristics of the record of the print unit and the table gradation correction.

On Fig presents a flowchart of the sequence of steps for explaining the processing of determining the level of switching by the arithmetic unit determining the amount of deposited toner in accordance with the second embodiment.

On Fig presents a flowchart of the sequence of steps to explain the arithmetic operation of determining the quantity of deposited toner by the arithmetic unit determining the amount of deposited toner in accordance with the third embodiment.

On Fig presents a graph showing the relationship between the mixing ratio of toner and the amount of electric charge of toner in a specific external conditions.

On Fig presents a view for explanation maximum difference ΔPmax provisions and the maximum change amount ΔImax light.

On figa and 27F shows the graphs of reflected waves, when the toner density is changed from low density to high density.

On figa and 28V presents graphs for explanation of output signals based on the reflected waves.

On figa-29S - graphs to explain the method of calculating the position of the peak.

Description in the of options for the implementation of the

Below with reference to the accompanying drawings will be described measuring device designed to measure the amount of applied toner, and image formation in accordance with the variants of implementation of the present invention.

The first option exercise

The layout of the device

Figure 7 presents a block diagram showing the arrangement of the device forming the image in accordance with the embodiment.

Exposing the laser 502 emits laser light in accordance with input signal Sig subjected to pulse width modulation. The surface of the drum 501 with the photosensitive surface layer as bearing the image of the item uniformly charged primary charging device 504. In this embodiment, as the primary charger provides a charging device of corona charge. This primary charger 504 applied voltage bit offset DC ~900 μa and the voltage of the grid bias DC, approximately 780 B, and the outer circumferential surface of the drum 501 with the photosensitive surface is uniformly charged by a voltage that is close to ~700 C.

Laser light emerging from the imaging laser 502 scanned with a polygon mirror 503 in the managing of the main scan, resulting on the surface of the drum 501 with the photosensitive surface layer is formed electrostatic latent image. This electrostatic latent image is manifested processing unit 505 to form the image shown by the toner. Thus, the exposure laser 502 and processor unit 505 can be configured in the form of an imaging unit that forms the image shown by the toner. The image shown by the toner is transferred to the carrying tape 506 as an element to an intermediate transfer, and then transferred to the printed sheet and is fixed on it, although it is not shown. Note that the term "main scanning" refers to the direction perpendicular to the direction of movement of the drum 501 with the photosensitive surface and parallel to the surface of the drum 501 with the photosensitive surface. The term "direction of the auxiliary scanning" refers to the direction parallel to the direction of movement of the drum 501 with the photosensitive surface.

Unit 507 for measuring amount of toner is about processing unit 505 and measures the amount of applied toner according to the image shown by the toner on the drum 501 with the photosensitive surface is STN layer, which manifested processing block 505.

Note that the amount of deposited toner can be measured by transferring the tape 506 after the image transfer, shown by the toner, drum 501 with the photosensitive surface layer on the carrying belt 506. Some devices imaging perform a direct transfer of the image shown by the toner, drum 501 with the photosensitive surface layer on the printed sheet without using transports the tape 506. In addition, the number of deposited toner can be measured on the printed sheet instead of a drum 501 with the photosensitive surface layer or transferring belt 506. Therefore, the drum 501 with the photosensitive surface layer, transferring the tape 506 or printable worksheet that (which) is the image shown by the toner before transfer, hereinafter will be referred to as a "supporting member".

The control unit

On Fig presents a block diagram showing the layout of the 500 block of the control device forming the image.

Block 507 measuring the amount of toner control unit 500 measures the amount of applied toner in each toner formed on the drum 501 with the photosensitive surface layer (or transferring the tape 506). Block 606 density calculates data density recognize the I from the measured quantity of deposited toner. The controller 607 compares the calculated data density (actually measured value) data density (theoretical value) in relation to the value of the Sig signal of each toner and adjusts the table 609 parameter data range (reference data table γ (γ))used for correcting the nonlinearity of the density of the image based on the result of the comparison.

The controller 607 controls the process 601 charging process 602 exposure, process 603 manifestations and process 604 migration as the corresponding processes of the device forming the image, making it on the basis of the calculated data density.

The amount of the developed toner on the transferring belt 506 can be measured, and the magnitude of the friction parameter can be calculated based on the measured quantity of deposited toner using block 608 calculation of the friction parameter, while the computed value of the friction parameter can be used in the feedback control carried out with respect to the process 603 manifestations. Note that the parameter "friction" is determined by the ratio Q/M of the electric charge Q of the toner is generated due to friction between the toner and a carrier while stirring the developing agent, and the mass M of the toner.

The mass M per unit area, S, is calculated based on the quantities of the d tthe deposited toner (the height of each of the toner), measured (measured) by unit 507 of measuring amount of toner using the following equation:

Next, the electric charge Q per unit area, S, is calculated based on the difference ΔV of the potential of the latent image before development and after him, the measured (not shown) the unit of measurement of the surface potential using the following equation:

Then calculate the value of the Q/M of the friction parameter using the following equation:

This value of Q/M is feedback to the development process.

The unit of measurement of the quantities of toner

Figure 9 presents a block diagram showing the arrangement unit 507 for measuring amount of toner.

Spot 105 toner and a supporting member 106 is irradiated with laser light (measuring light)emitted from the laser source 701 light through a condenser lens 702, which condenses the laser light, collecting it in spot. Light reflected from the spot 105 of the toner or the carrier element 106 that forms an image on a single-line sensor 704 through svetoprinimayuschego lens 703. Therefore, a single line sensor 704 captures the image of the reflected light in accordance with the slick thickness 105 of the toner. Note that d is TES invention is not limited to a one-dimensional line sensor, and you can use a two-dimensional image sensor. Note that the laser source 701 light or device that combines laser source 701 of light and a condenser lens 702 corresponds to the block exposure light. In addition, a single line sensor 704 or a device that combines a single-line sensor 704 and the condenser lens 702 corresponds to the block of image capture.

Signal indicating a reflected wave coming from a single-line sensor 704, is converted into a digital signal by the analog-digital Converter (ADC) 707, and this digital signal is stored in the block memory 705. Block 706 signal processing calculates the amount of applied toner on the basis of the data of the reflected wave, stored in block 705 memory.

The surface of the support member 106, which is formed spot 105 toner is irradiated with measuring light, and the data it reflected wave (wave reflected from the load-bearing element) is stored in the block memory 705. Then, the carrier is moved in the direction indicated by the arrow, the surface of each spot 105 toner is irradiated with measuring light, and the data it reflected wave (wave reflected from the toner) is stored in the block memory 705.

To the wave reflected from the load-bearing element, and the data of the wave reflected from the toner, apply processing (described below)performed by block 706 clicks the processing of signals, for calculating the difference between the peak positions of the wave reflected from the load-bearing element, and the wave reflected from the toner (special point, hereinafter referred to as the difference of provisions), and the difference between the amounts of reflected light (hereinafter referred to as the difference between the amounts of light). Then calculate the amount of applied toner on the basis of the difference between provisions and the difference between amounts of light. Note that the difference between the amounts of light is calculated based on the difference between the peak heights of the reflected signals. In addition or alternatively, you can use the difference between the squares of the areas of reflected waves as the difference between the amounts of light.

As shown in figa and 28V, the reflected wave is received by a multitude of sensors, which are located next to each other, and the output signals corresponding to the reflected waves, are available as electric signals corresponding to amounts of received light from the respective photodetectors. The difference of the provisions of the find, depending on which of the many photodetectors produces the greatest signal (position receiving the greatest light). Because the receiving position of the light is changed in accordance with the height of the object, the difference of the provisions provides accurate measurement of a quantity of deposited toner in the range of high platnost is, where layers of toner continuous, but does not provide an accurate measurement of a quantity of deposited toner in the range of low densities, where the layers of toner intermittent. Conversely, the difference between the amounts of light is changed under the influence of the amount of light reflected from an object. For this reason, in the range of low densities, where the area of the toner to the support element 106 is gradually increased, the difference between the amounts of light makes possible accurate measurement of a quantity of deposited toner. On the other hand, in the range of high density, where the layers of toner continuous, since the amount of light reflected from an object rarely changes, it is difficult to accurately measure the amount of applied toner on the basis of the difference between the quantity of light.

On figa and 27F shows the graphs of reflected waves, when the toner density is changed from low density to high density.

In the range of low densities wave 801, reflected from the bearing member 106, and 802 wave, reflected from the layer of toner shown in figa, issued in the form of the total signal, shown in solid curve on fig.27D. When the toner layer is increased, the peak output wave moves in the direction indicated by the dotted arrow on figa. Wave, indicated by the dotted curve on fig.27D is the wave after a curve approximation described below.

In the mid range dps is tastey issued, accordingly, the total wave indicated by a solid curve on file and consisting of waves 801', reflected from the support member 106, and the waves 802', reflected from the layer of toner shown in Fig In, and wave after approximation of the curve, which is indicated by the dotted curve on file. In the range of average densities, although the amount of light reflected from the layer of toner is increased in contrast to the reduced amount of light reflected from the support member 106, the position of the peak of light reflected from the layer of toner is rarely changed, and the amount of light increases, which is indicated by the dotted arrow on figv.

Similarly, in the range of high density are given, respectively, of the total wave indicated by a solid curve on fig.27F waves 801”, reflected from the bearing member, and 802 wave, reflected from the layer of toner shown in figs, and wave after approximation of the curve, which is indicated by the dotted curve on fig.27F.

On figa-29S presents graphs for calculating the position of the peak of the wave reflected from the support member 106, as reference values, and waves after approximation of the curve described by fig.27D-27F.

Figa, 29V and 29S respectively show the wave 801 reflected from the support member 106, and the approximated curve 803 at low density, approximated the th curve 803', with an average density and the approximated curve 803” at high density. The height of the image shown by the toner is calculated by setting the output value of the position of the peak wave 801 reflected from the support member 106, as a reference value (zero point) and detecting the amount of movement of the position of the peak of the approximated curve obtained on the basis of the image displayed by the unit.

Figure 10 presents a view to explain the method of measuring the amount of deposited toner on the spots 107 toner generated by the modulation method is covered square.

As shown in figure 10, the applied layers of toner spots 107 toner generated by the modulation method covered area, have a constant height h, and width W changes depending on the density. Figure 10 displays the spot 107 toner, which have a higher density on the left end and a lower density on the right end.

The signal processing unit

Figure 11 presents a block diagram showing the arrangement of block 706 signal processing.

Block 901 detection position of the peak detects the position of the peak based on data from the wave reflected from the load-bearing element, stored in the block memory 705. In addition, the block 901 detection position of the peak detects the position of the peak based on data from the wave reflected from the toner corresponding to each spot 105 toner and stored in the block memory 705. Then block 901 detection position is s peak retains the difference between the position of the peak of the bearing member 106 and the position of the peak spot 105 toner (the difference for each pixel, one line sensor 704) in block 902 memory of a difference as the difference of the provisions. Note that the component of eccentricity of the bearing member 106 can be calculated based on the peak positions of the two points of the bearing member 106 before the stain 105 toner, and after that spot, and the position of the peak of the toner can be adjusted by removing the component of the eccentricity of the position of the peak of the toner, thereby improving the accuracy of calculating the position of the peak of the toner.

Note that the calculation and save the difference of the provisions of conduct for all spots 105 toner. In addition, each difference of the provisions of the transform in height (μm) of the toner by multiplying the difference between the provisions at the rate determined on the basis of the geometrical layout of block 507 measuring the amount of toner. When the load-carrying element 106 according to this variant implementation is transparent to laser light (having a wavelength equal to 780 nm and a spot size of 50 μm) as the measuring light, it is necessary to exclude a thickness corresponding to the thickness of the film support member 106. In this case, exclude the apparent thickness of the film obtained from the difference between the refractive indices of air and the material of the support member 106.

Block 903 detecting the amount of reflected light (unit calculating the amount of light) calculates the height of the peaks of the wave reflected from the support member, and each wave reflected from the toner, splicemap unit 901 detection position of the peak. Then block 903 detecting the amount of reflected light retains the difference between the peak height of the bearing member 106 and the peak height of each spot 105 toner in block 904, the storage of the differences between the amounts of light as the difference between amounts of light. Note that the component of eccentricity of the bearing member 106 can be calculated based on the peak positions of the two points of the bearing member 106 before the stain 105 toner, and after him, and the peak height of the toner can be adjusted by removing part of the eccentricity of the peak height, thereby increasing the accuracy of calculation of the peak height of the toner. Note that the calculation and save the difference of the amounts of light exercise for all spots 105 toner.

As a method of detecting the position and the height of the peak reflected wave is applied the following way. To the reflected wave is applied to the approximation of the curve by method of least squares using the Gaussian function. The position and height of the peak is calculated based on the parameters of the Gaussian functions after approximation of the curve. The Gaussian function is bell-shaped form, having as center x=µ and defined as follows:

where µ is the position of the peak,

σ is the parameter related to the width of the peak, and

A - amplitude.

On Fig presents a graph for explanation of approximation crooked is based on the Gaussian function. As shown in Fig, the curve is applied to the data of the reflected wave that is stored in the block memory 705, on the basis of Gaussian functions, resulting in the obtained characteristic values that represent the shape of the reflected wave (a Gaussian function). That is, the parameter µ specifies the position of the peak, and the parameter a determines the height of the peak.

Instead of the Gaussian function approximation curve can be applied using the Lorentz defined as follows:

or using the quadratic function defined as follows:

Or without approximation of any curve, the position of the pixel where the data reflected wave show the maximum value that can be set as the position of the maximum, and this maximum value can be set as the peak height.

The arithmetic unit 905 determine the quantity of deposited toner (computing unit) calculates the amount of toner on the basis of the average values of the differences of the positions stored in the block memory 902 differences provisions and/or the average value of the differences between the heights of the peaks stored in block 904, the storage of the differences between the amounts of light, and information about 908 image density shown by the toner, which should be formed. The information about 908 density shows the I, shown by the toner, which is necessary to form, represents information associated with whether the image displayed by the toner, which is necessary to form the image of a low or high density. The arithmetic unit 905 determine the amount of deposited toner calculates the amount of toner on the basis of the average values of the differences of the positions stored in the block memory 902 differences provisions and/or the average value of the differences between the heights of the peaks stored in block 904, the storage of the differences between the amounts of light, on the basis of the conversion table of the amount of toner stored in a storage device (not shown). Then block 905 determine the amount of deposited toner calculates the amount of deposited toner. The details of this processing will be described below.

The stain of toner

On Fig presents a view showing an example of patch pattern formed on the load carrying element 106.

The image shown by the toner and the image, which must be transferred to the printed sheet, is formed on the image bearing member 106. In addition, the invoice figure 710 form discontinuous in the direction of auxiliary scanning in a non-image region of the bearing member 106 in accordance with the signal from the generator patterns (not shown). As shown in Fig, decl the ne pattern 710 is formed in a non-image region outside the image area in the direction of the main scan.

Invoice figure 710 includes spots 105 toner for 16 levels of brightness scale, and each of these spots has a size of 10×10 mm, Number of spots 105 toner corresponds to 16 levels of brightness scale (tonal values 16, 32, ..., 240, 255), obtained by dividing the 256 levels of brightness scale into equal intervals. In the following description, spot 105 toner can be also expressed by the symbols P1, P2, ..., P16. Note that the number of spots 105 toner can be set to an arbitrary value.

Quantity of deposited toner on the respective spots 105 toner formed on non-image areas of the bearing member 106, consistently measured by unit 507 of measuring amount of toner along the direction of rotation or movement of the bearing member 106.

Assume that step photodetectors in a single-line sensor 704 unit 507 for measuring amount of toner is set equal to the product of the optical zoom svetoprinimayuschego lens 703, and the average diameter of the toner particles, taking into account the laminated state of the toner or smaller than this work.

On figa-14D are presented, illustrating the laminated toner. On figa shows the state in which the toner is not deposited, and the surface of the support member 106 to be detected in this state. On Fig shown In the condition which caused the layer of toner and figs shows the state in which the laminated two layers of toner. In addition, the particle of the toner can be laminated between the toner particles, as shown in fig.14D, and the step of sensors required to detect this condition, also shown in fig.14D.

The optical system according to this invention has the following dependencies.

where h is the height (μm) of object;

L is the magnitude of the displacement (μm) from the reference position defined on a single line sensor;

R - interim walking distance (µm/pixel) between neighboring pixels of a single-line sensor;

M optical zoom lens, and

N is the number of moving pixels from the reference position on the single line sensor.

In order to reliably distinguish one particle of the toner, it is desirable to have N≥1. Therefore, it is desirable to satisfy the dependence of p≤M·h. Assume that the average particle diameter of the toner is set quantitative average diameter, since the object to be measured, is the physical appearance of the size of the toner.

On figa-14C shows what you need to find only one pixel, the irradiated light. However, in the case according fig.14D the position of the peak is detected through the detection position (above approxim the tion) for comparison voltages (∝ intensity of light), generated by two adjacent pixels irradiated by the light."

On figa-15F are presented, demonstrating the example of sector profiles superimposed pattern 710.

Figa corresponds to image information of Magenta, issued from the generator drawings. Figv corresponds overhead figure 710, which is processed by screen printing, for example, with the parameter 212 l/d (lines per inch) at -45° relative to the direction of movement of the bearing member 106 is formed on the support element 106. Block 507 measuring the amount of toner to measure the amount of applied toner present on the spots 105 toner, the arrow V shown in figv.

On figs presents views showing cross sections of the respective spots 105 toner. For example, in the range of the backlight (low densities), the designated tone values from 0 to 48, the section height of the pixels, which form each spot 105 of the toner increases, and the width also becomes larger due to the pulse-width modulation (PWM) in the direction of the main scan (see fig.15D).

Further, in the range of average densities, defined tonal values from 48 to 192 points, which form each spot 105 toner overlap with neighboring points, and the cross-section point is extended (see file). Within the range of the average is x densities of the cross section of each spot 105 toner is formed by the points and the extended part of the surface of the support member 106.

In addition, at high densities, for example in the range of high density, characterized tonal values from 192 to 255, the open portion of the surface of the bearing member 106 disappears, and sections spots 105 toner formed of overlapping points (see fig.15F).

Note that sections spots 105 toner of other color components are similarly expanded in accordance with the tone values, which are characteristic purple color. Note that the processing by means of screen printing, applied to the respective color components, likewise differs in that, for example, are values 168 dpi and 63° for yellow, 212 dpi and 45° for blue and 200 dpi and 0° for the black color.

On figa and 16B presents graphs showing examples of measurement results superimposed pattern 710. On figa shows the difference between provisions and figv shows the difference between the amounts of light.

As shown in figs, square point, which forms each spot 105 of the toner is in the range of illumination is less than the area of the point of the disclosed part (hereinafter referred to as open square) surface of the bearing member 106. For this reason, the change in the difference of the positions obtained by measuring spots 105 of the toner is in the range illumination, a little. As a result, the linearity of the difference of the positions within the range of backlight smart who agrees, as shown in figa.

On the other hand, in the range of high density, the change in the difference provisions may be obtained with high accuracy by measuring spots 105 toner, and a change in the amount of light reflected from the spot 105 of the toner decreases. For this reason, the change in the difference between the quantities of light received by the measuring spot 105 of the toner is in the range of high density, small. As a result, the linearity of the difference of the amounts of light in the range of high density is reduced, as shown in figv.

On figa and 17B shows the graphs for explanation of the reflected waves issued from the ADC block 707 507 measurement of toner.

Unit 507 for measuring amount of toner changes the wave 201 is reflected from the toner coming from the pixels, which form each spot 105 toner, and a wave 202, reflected from the supporting element, coming from the open part of the surface of the bearing member 106 between the points, as shown in figa. Therefore, the reflected wave issued from the ADC 707 represents the total wave 203 waves 201 reflected from the toner, and the waves 202, reflected from the bearing member, as shown in figv.

That is, since the density becomes higher with the increase in the density of the formation (areal density) of dots of the toner, the ratio of employment waves 202, reflected from the bearing member, is reduced. As a result, it is of measuring the difference of the amounts of light in the range of the backlight is increased, and the accuracy of measurement of the difference between quantities of light from a range of medium density to high density is reduced. Therefore, in the preferred embodiment uses the method of detection used primarily to detect the difference between the amounts of light when the recording density is low, and the method of detection used primarily to detect the difference between positions when the recording density is high.

The arithmetic unit determining the amount of toner

On Fig presents a flowchart of the sequence of steps to explain the arithmetic operation to determine the amount of deposited toner by the arithmetic unit determining the amount of toner.

The arithmetic unit 905 determine the amount of deposited toner sets (step S101) maximum distance (or frequency) between the points, which form a spot 105 of the toner to be measured, for each color component, based on the value and angle of the screen frequencies spots 105 toner, which has undergone the same process of forming the image as the image displayed by the toner in toner.

On Fig presents a graph showing the level shift detection image signal with respect to the maximum distance between the points is, determined by the resolution (value and angle of the screen frequency). On Fig shown that the difference of the provisions found in the area in which the switching level is higher than the solid line 906 or dotted line 907. In addition, the difference between the amounts of light detected in the region in which the switching level is lower than the solid line 906 or dotted line 907. Note that the maximum distance between the points corresponds to mastocytoma the distance between the raster lines in the direction of auxiliary scanning.

The arithmetic unit 905 determine the amount of deposited toner sets (step S102) levels Dth switch in relation to the maximum distances set at step S101, for the respective colors in accordance with table switching, shown in Fig. Note that the level switch can be installed in a manner that will provide a step change, for example, Dth=128 for the 0.3<X≤0.5 mm (see solid line 906), or can be installed in a manner that will ensure continuous change (see the dotted curve 907). Note that in the case of Magenta, which apply processing by means of screen printing with the settings -45° and 212 dpi, characteristic X=0.17 mm and Dth=128.

As described above, the maximum distance between the points and the value of the Sig signal density asked in a dependent is t from the toner, which should be formed. Therefore, the use of the difference of the provisions or the difference between the quantities of light can be switched using the table of the switch shown in Fig.

On Fig presents conversion table of a difference of provisions in the amount of toner showing an example of the relationship between the value of the Sig signal density and differential provisions. The first quadrant shows the relationship between the value of the Sig signal density and differential provisions, and the second quadrant shows the relationship between the difference of the positions and the number of toner. On Fig presents conversion table of the difference of the amounts of light in the amount of toner showing an example of the relationship between the value of the Sig signal density and the difference between amounts of light. The first quadrant shows the relationship between the value of the Sig signal density and the difference between the amounts of light, and the second quadrant shows the relationship between the difference between the amounts of light and the amount of toner used.

Next, the arithmetic unit 905 determine the amount of toner compares (step S103), the value of Sig signal density spots 105 toner, which should be measured with the level Dth switch. If Sig>Dth, then the arithmetic unit 905 determine the amount of toner calculates (step S104), the amount of toner (M/S)per unit area, using inter is the relation between the difference of the positions and the number of toner, shown in the second quadrant Fig. On the other hand, if Sig<Dth, then the arithmetic unit 905 determine the amount of toner calculates (step S105), the amount of toner (M/S)per unit area, using the relationship between the difference between the amounts of light and the amount of toner shown in the second quadrant Fig.

Then, the arithmetic unit 905 determine the amount of deposited toner calculates (step S106), the density of the toner by using the relationship between the quantity of toner and the density of the image shown in the third quadrant of the conversion table to the difference of provisions in the amount of toner on Fig. Note that the relationship between the quantity of toner and the density of the image shown in the third quadrant Fig is the same as the relationship shown in Fig.

The arithmetic unit 905 determine the amount of deposited toner repeats the processes from step S103 to step S106 to obtain the measurement results of all spots 105 toner, prisoners in a patch figure 710, based on the result of determination at step S107. As a result, we obtain a characteristic recording unit of the printing device image formation, which is the same as the relationship between the value of the signal density and the density of the image displayed on Fig.

The control unit

On figa and 22B presents the Rafiki, showing an example of characteristics of the record of the print unit and the table gradation correction.

As described above, the block 606 calculate the density of the control unit 500 calculates data density, shown in figa (characteristic record of the print unit based on the measured amount of deposited toner. Therefore, the controller 607 500 block management creates a table gradation correction (reference data table γ (γ 609), shown in figv, which corrects characteristics of the record of the print unit shown in figa (output characteristics of the device forming the image), which is linear. Note that the controller 607 applies smoothing processing or similar processing to γ 609, to prevent a reversal of the decrease of the output signal of the laser due to increasing values of the image signal. The control unit 500 performs processing on the signal after the establishment of γ 609.

Thus, the amount of toner can be detected with high accuracy by switching to the use of the layer thickness of the toner (the difference between provisions)or the amount of reflected light (the difference between the amounts of light) detecting the amount of toner in accordance with the resolution. In addition, it is possible to detect the deviation signal of the print unit in real-time peredavat detected deviation feedback for the formation of the next image, thus, always forming a stable tonal image.

In the above description shows an example image that has been processed by screen printing. But the same effects can be obtained for images that have been processed bitmap.

γ 609 is not necessary to rewrite completely, and we can rewrite the difference obtained by detecting the amount of toner in γ 609 and registered as the initial value, or registered by calibration management or a similar method.

The second option exercise

Below will be described gradation correction in accordance with the second embodiment of the present invention. Note that the same position in the second embodiment denote the same elements as in the first embodiment, and their detailed description will not be repeated.

In the first embodiment, the amount of applied toner is calculated based either on the difference of the provisions, or from the difference between amounts of light based on the level of the switch shown in Fig, which can be set in advance. In the second embodiment, will be described an example that uses dynamic switching level corresponding to the difference between the amounts of light is, reflected from the support member 106 and stains 105 toner (the difference between the amounts of light).

When the amount of light reflected from each spot 105 of the toner is small, the accuracy of approximation of the curve decreases and it is difficult to accurately detect the position of the peak of the wave reflected from the spot 105 toner. In other words, the accuracy difference of the provisions spots 105 toner having a large difference between the amounts of light, is low. Therefore, the level switch used in an arithmetic operation of determining the quantity of deposited toner, it is desirable to determine, taking into account the difference between the quantities of light.

On Fig presents a flowchart of the sequence of steps for explaining the processing of determining the level of switching by the arithmetic unit 905 determine the applied amount in accordance with the second embodiment.

The arithmetic unit 905 definition deposited amount of toner receives (step S150), the maximum value Idmax of the difference between the Id of the amounts of light by examining the data in block 904 memory of the differences between the amounts of light. The maximum change amount ΔImax light indicates the maximum difference between the amounts of light according to the set data of the reflected waves received from the set of images shown by the toner and formed with different densities, as shown in Fig. On Fig shows the, what ΔImax is calculated based on the difference between the amounts of light (peak heights) according to the set data of the reflected waves received from the image shown by the toner having a different density, i.e. the values of the signal density in the range from 0 to 255. Then (step S151) calculate the value of ΔDth change threshold as follows:

where - coefficient (a predetermined value), and

Idth - threshold (predetermined value) of the difference between quantities of light.

Equation (9) compares the maximum value Idmax of the difference of the amounts of light with a predetermined threshold Idth difference between amounts of light. If Idmax<Idth, determines that the amount of light reflected from the spot 105 of the toner is small, and the accuracy difference of provisions is low, and calculate the value ΔDth<0 changes the threshold used to change the threshold Dth in the direction of decrease. If Idmax≥Idth, determines that the amount of light reflected from the spot 105 toner is sufficient, and the accuracy difference of the positions is high, and calculate the value ΔDth≥0 change threshold used to change the threshold Dth in the direction of increasing.

The arithmetic unit 905 determine the amount of deposited toner updates (step S152), the threshold Dth, using the value of ΔDth change threshold.

After this the th arithmetic unit 905 determine the amount of deposited toner carries out an arithmetic operation of determining the quantity of deposited toner, shown in Fig, using a threshold Dth, calculated using equation (10).

As described above, since the switching level when performing arithmetic operations is set dynamically, taking into account the difference between the Id of the amounts of light, the result of measuring the amount of deposited toner can be obtained with higher accuracy. Note that the control for Dth switch by measuring the difference between the peaks can be exactly the same as management, providing a measurement of the difference of the amounts of light.

A third option exercise

Below will be described gradation correction in accordance with a third embodiment of the present invention. Note that the same position in the third embodiment denote the same elements as in the first and second variants of implementation, and their detailed description will not be repeated.

The first and second embodiments of explained an example in which switched the difference between the terms and the difference between the amounts of light as the data used when performing the arithmetic operation of determining the quantity of deposited toner using the trigger level. In the third embodiment, explanation will be given of an example in which the amount of applied toner calculated using all the data difference Polo the response and the difference between amounts of light without changing the data.

On Fig presents a flowchart of the sequence of steps to explain the arithmetic operation of determining the quantity of deposited toner by the arithmetic unit 905 determine the amount of deposited toner in accordance with the third embodiment.

The arithmetic unit 905 definition deposited amount of toner changes the relationship of the contributions of differences in Pd terms and differences Id of the amounts of light applied to the arithmetic operation of determining the quantity of deposited toner using weights Wp(Sig) and Wi(Sig) in accordance with the value of the Sig signal density. Then block 905 uses the average values of the differences between the regulations and the differences between the amounts of light after weighting in accordance with the relevant spots 105 toner when carrying out an arithmetic operation of determining the quantity of deposited toner.

However, since the difference between Pd provisions and the difference between the Id of the amounts of light have different units, the data that represent the number of deposited toner cannot be obtained, simply by assembling the difference Pd of the provisions and the difference between the Id of the quantities of light. To coordinate units of measure difference Pd of the provisions and the difference between the Id of the amounts of light, the arithmetic unit 905 definition deposited amount of toner calculates (step S170), the maximum change ΔPmax on what ogene based on the maximum values and minimum values of the difference Pd provisions stored in the block memory 902 differences provisions. The maximum difference ΔPmax position specifies the maximum difference between the peak positions of a data set of reflected waves that are received from multiple images displayed by the toner and formed with different densities, as shown in Fig. On Fig shown that ΔPmax is calculated based on the peak positions of the multiple reflected waves received from the set of images shown by the toner and having a different density, i.e. the values of the signal density in the range from 0 to 255.

The arithmetic unit 905 definition deposited amount of toner calculates (step S171), the maximum change ΔImax the amount of light based on the maximum values and minimum values of the difference Id the quantity of light stored in the block memory 904 of the differences between the amounts of light. The maximum change amount ΔImax light indicates the maximum difference between the amounts of light according to the data set reflected waves that are received from multiple images displayed by the toner and formed with different densities, as shown in Fig. On Fig shown that ΔImax is calculated based on the difference of the amounts of light (peak heights) of the multiple reflected waves received from the set of images shown by the toner and having a different density, i.e. the values of the signal n is h in the range from 0 to 255.

Then, the arithmetic unit 905 definition deposited amount of toner calculates (step S172) ΔPmax/ΔImax as the coefficient k'is used to reconcile units, and multiplies (step S173) corresponding to the difference between the Id of the amounts of light stored in the block memory 904 of the differences between the quantities of light by a factor of k'to convert the difference between the Id of the amounts of light on the difference between the Pd provisions.

The arithmetic unit 905 definition deposited amount of toner multiplies the difference Pd' positions (the difference between the amounts of light after conversion)is stored in the block memory 904 of the differences between the amounts of light, the weight Wi(Sig), corresponding to the value Sig signal density and defined as follows:

The arithmetic unit 905 determine the amount of deposited toner multiplies the difference Pd of the provisions stored in the block memory 902 of the differences between the provisions on the weight Wp(Sig), corresponding to the value Sig signal density and defined as follows:

Thus, the arithmetic unit 905 determine the amount of deposited toner weighing (step S174) data in accordance with the relevant spots of toner.

As described above by equation (12), the weight Wp(Sig) is a weight that takes value "1"when the value of the Sig signal density is "255" (maximum), and prinimaetsea "0", when this value is "0" (minimum), that is, 0≤Wp(Sig)≤1. In addition, as described in equation (11), the weight Wi(Sig) is a weight that takes the value "0"when the value of the Sig signal density is "255" (maximum), and takes the value "1"when the value is "0" (minimum), that is, 0≤Wi(Sig)≤1. Therefore, the contribution of the difference Pd of provisions in arithmetic operation of determining the quantity of deposited toner becomes high in the range of high density, and the ratio of the contribution of the difference between the Id of the amounts of light becomes high in the range of low densities.

In the above description, the idea was that the difference of the Pd provisions and the difference of the Id number are weighted evenly. However, this is not a limitation for the present invention, and these differences can be weighted appropriately in accordance with a pattern of spots 105 toner.

Next, the arithmetic unit 905 determine the amount of deposited toner calculates the average value of the difference of the provisions, multiplied by the weight, and the difference between the amounts of light, which is converted into the difference of the provisions and multiplied by the weight for each spot 105 toner, and associates (step S175) this average value with the value of the Sig signal density. Then, the arithmetic unit 905 determine the amount of deposited toner multiplies the corresponding average values of N. the coefficient j, determined based on the geometric layout of block 507 measurement of the toner, and thereby converts them (step S176) in the amount of deposited toner (unit: μm).

Modification of embodiments

On Fig presents a graph showing the relationship between the mixing ratio of toner and the amount of electric charge of toner in a specific external conditions.

Because the relationship between the mixing ratio of toner and the amount of electric charge of the toner varies depending on the external conditions (temperature, humidity etc), which is operated device imaging, the device forming the image includes a sensor external conditions for the detection of changes in external conditions. Therefore, the toner is formed in accordance with the temperature and humidity detected by the sensor environment and the magnitude of the electric charge of the toner can be calculated on the basis of the measurement spots of toner by unit 507 of measuring amount of toner. Then, addressing Fig determine the mixing ratio of the toner (the ratio of the amount of toner and the amount of the amount of toner and the amount of media), the corresponding external conditions, device imaging, thereby controlling the amount of supply of toner. That is the terrain suitable mixing ratio of the toner can be calculated based on the amount of electric charge of toner.

When the mixing ratio of the toner exceeds a suitable mixing ratio of the toner (for example, 10%), the toner supply is stopped and when the mixing ratio of the toner is below a suitable mixing ratio of the toner supply toner begin reaching a suitable mixing ratio of toner.

In accordance with the above variants of the function add-on sensor and laser measuring transducer movement embodied by a single sensor. When measuring the amount of deposited toner is mainly used either integral changing the amount of light determined by operation of add-on sensor or changing the layer thickness of the toner determined by operation of the laser measuring displacement transducer, and switching between these modes is performed in accordance with the range of densities bitmap and drawing of screen printing. Therefore, the amount of deposited toner can be accurately measured. In addition, the spot size (toner) can be greatly reduced compared to the normal size, thereby reducing the consumed amount of toner. In addition, when performing the usual method of toner is formed between adjacent image areas. However, since such petecostal with the image area, it is possible to prevent the degradation of the device forming the image. In addition, by increasing the number of spots of toner can further improve the accuracy of density correction.

As described above, the amount of applied toner calculated by switching in accordance with the amount of reflected light and the height of the toner that can be detected by a single sensor, depending on whether each spot of toner or invoice figure in the range of low densities. Therefore, cvetovosproizvodyaschie and maximum density can be guaranteed without increasing the size and cost of the device for image processing. In addition, since the measuring device uses a semiconductor laser, it is possible to reduce the size of the spots of toner. Consequently, the gradation correction can be performed without compromising the device performance of image formation and thereby reducing consumed amount of toner. Moreover, by increasing the number of spots of toner can further increase the accuracy of reproducibility of tones.

Possible embodiments of the

This invention is applicable to the system formed by multiple devices (such as a host computer, device, device on the Ohm reading printer) or may be applied to an apparatus consisting of one device (e.g., copier, Fax machine).

In addition, the invention can provide a storage medium storing program code for implementing the above-described processes with respect to a computer system or computing device (e.g. personal computer), reading the program code via a Central processing unit (CPU) or microprocessor unit (BM) of a computer system or computer devices with media and subsequent program execution.

In this case, the program code read from the storage medium implements the functionality in accordance with the aforementioned variants of the implementation.

In addition, to ensure the program code you can use the media, such as floppy disk, hard disk, optical disk, magnetooptical disk, a persistent storage device on the CD-ROM (CD-ROM), recordable CD (CD-R), a magnetic tape, card non-volatile memory and a persistent storage device (ROM).

Moreover, in addition to being able to implement the above described functions in accordance with the above options implementation through execution of program code, which is read what is computer this invention includes the case when working on the computer, the operating system (OS) or a similar tool performs part of or all of them in accordance with the program code and realizes functions according to the above-mentioned variants of the implementation.

In addition, this invention also includes a case where after writing the program code read from the storage medium in card expansion functions inserted into the computer or in a memory device provided in the expansion unit functions, which is connected to the computer, CPU or similar means, provided on the map feature enhancement or expansion unit functions, performs part of the process or the entire process in accordance with the instructions of the program code and realizes functions of the above embodiments.

In the case where this invention is applied to the above storage medium, this storage medium stores program code corresponding to the block sequence diagrams of the stages described when considering options for implementation.

Variant implementation of the present invention can provide a measuring device for measuring the amount of toner of the image shown by the toner formed on the raw image element of the device forming the Oia image, containing the means of exposure light used for the irradiation of a light image shown by the toner; a means of capturing tool to capture images shown by the toner, and it is a means of image capture has many photodetectors located adjacent to each other; and a calculator tool that is designed to obtain information associated with peak positions of the reflected waves, and the information associated with the peak heights of the reflected waves, from the data obtained by receiving light reflected by the image shown by the toner through a variety of sensors, and to calculate the amount of toner on the basis of at least one of the position peak and peak height, as well as information related to the density of the formed image shown by the toner.

In this measuring device, the calculator tool can calculate the amount of toner on the basis of the position of the peak, when the density of the formed image shown by the toner is high, and calculate the amount of toner on the basis of the peak height, when the density of the formed image shown by the toner is low.

In the preferred embodiment, when it is necessary to measure the amount of toner of images shown by the toner and having a different density, redtwo calculation determines the image, shown by the toner, the amount of toner which should be calculated on the basis of the peak position, and the image shown by the toner, the amount of toner which should be calculated on the basis of the peak height, many of the images shown by the toner and having different densities, in accordance with the difference between the peak height according to the reflected wave image of high density, shown by the toner, and the peak height according to the reflected wave image of low density, shown by the toner.

In the preferred embodiment, when it is necessary to measure the amount of toner of images shown by the toner and having a different density, the means of calculation determines the image displayed by the toner, the amount of toner which should be calculated on the basis of the peak position, and the image shown by the toner, the amount of toner which should be calculated on the basis of the peak height, many of the images shown by the toner and having different densities, in accordance with the difference between the position of the peak according to the reflected wave image of high density, shown by the toner, and the position of the peak according to the reflected wave image of low density, shown by the toner.

In the preferred embodiment, when the density of the formed image, royalenova toner is low, the means of calculation weighs the height of the peak, and not the position of the peak, and calculates the amount of toner on the basis of the peak position and the peak height, and when the density of the formed image shown by the toner is high, the means of calculation weighs the position of the peak, not peak height, and calculates the amount of toner on the basis of the peak position and the peak height.

Another variant implementation of the invention can provide a measuring device for measuring the amount of toner of the image shown by the toner formed on the raw image element of the device forming an image containing the means of exposure light used for the irradiation of a light image shown by the toner; a means of capturing tool to capture images shown by the toner, and it is a means of image capture has many photodetectors located adjacent to each other; and a calculator tool that is designed to obtain information associated with peak positions of the reflected waves, and the information associated with the peak heights of the reflected waves, from the data received by the reception light reflected by the image shown by the toner through a variety of sensors, and to calculate the amount of toner on the basis of at least the underwater from the peak position and area also information related to the density of the formed image shown by the toner.

In such a device the calculator tool can calculate the amount of toner on the basis of the position of the peak, when the density of the formed image shown by the toner is high, and calculate the amount of toner on the basis of the square, when the density of the formed image shown by the toner is low.

In the preferred embodiment, when it is necessary to measure the amount of toner of images shown by the toner and having a different density, the means of calculation determines the image displayed by the toner, the amount of toner which should be calculated on the basis of the peak position, and the image shown by the toner, the amount of toner which should be calculated on the basis of the square, many of the images shown by the toner and having different densities, in accordance with the difference between the area according to the reflected signal of high image density, shown by the toner, and the area according to the reflected image signal low density, shown by the toner.

In the preferred embodiment, when it is necessary to measure the amount of toner of images shown by the toner and having a different density, the means of calculation determines from the image, shown by the toner, the amount of toner which should be calculated on the basis of the peak position, and the image shown by the toner, the amount of toner which should be calculated on the basis of the square, many of the images shown by the toner and having different densities, in accordance with the difference between the position of the peak according to the reflected wave image of high density, shown by the toner, and the position of the peak according to the reflected wave image of low density, shown by the toner.

In the preferred embodiment, when the density of the formed image shown by the toner is low, the tool will calculate the weighing area and not the position of the peak, and calculates the amount of toner on the basis of the peak position and area, and when the density of the formed image shown by the toner is high, the means of calculation weighs the position of the peak, and not square, and calculates the amount of toner on the basis of the peak position and area.

In a preferred embodiment, the step of photodetectors, which are located next to each other, does not exceed the product of the optical zoom condenser lens means of image capture and the mean diameter of the toner particles.

An additional option may not provide the image forming device is, containing the means of forming the image is intended for forming the image shown by the toner, on the raw image element; and a measuring device, which is described in the previous claim.

Other embodiments of the

Aspects of the present invention can also be implemented using a computer or device (or devices such as the CPU or MB), which reads and executes a program recorded in a memory device to perform functions according to the above variant implementation of the above variants of implementation), and by the way, the steps of which are performed by a computer or device, for example, by reading and executing programs stored in a memory device to perform functions according to the above variant implementation of the above variants of implementation). With this aim the program loaded into the computer, for example via a network or from a recording medium of various types serving as the memory device (for example, machine-readable media).

Although this invention is described with reference to possible embodiments of, it should be understood that the invention is not limited to the described possible ways of implementation. The volume of claims, defined the th following claims, should be considered relevant for its interpretation in a broad sense and covers all such modifications and equivalent structures and functions.

1. Measuring device for measuring the amount of toner of the image shown by the toner formed on the raw image element of the device forming an image containing
module irradiation with light, is configured for exposure to light of the image displayed by the toner;
module image capture, configured to capture the image shown by the toner, and this module of the image capture has many photodetectors located adjacent to each other; and
the calculator tool, configured to obtain information associated with peak positions of the reflected waves, and the information associated with the peak heights of the reflected waves, from the data obtained by receiving light reflected by the image shown by the toner through a variety of sensors, and calculating the amount of toner on the basis of at least one of the peak position and the peak height, as well as information related to the density of the formed image shown by the toner.

2. The device according to claim 1, in which the calculator tool calculates the amount of toner on the basis of the position of the peak, when the density of the formed and what the considerations applying shown by the toner is high, and calculates the amount of toner on the basis of the peak height, when the density of the formed image shown by the toner is low.

3. The device according to claim 1, in which when it comes to measuring the amount of toner of images shown by the toner and having a different density, the means of calculation determines the image displayed by the toner, the amount of toner which should be calculated on the basis of the peak position, and the image shown by the toner, the amount of toner which should be calculated on the basis of the peak height, many of the images shown by the toner and having different densities, in accordance with the difference between the peak height according to the reflected wave image of high density, shown by the toner, and the peak height according to the reflected wave image of low density, shown by the toner.

4. The device according to claim 1, in which when it comes to measuring the amount of toner of images shown by the toner and having a different density, the means of calculation determines the image displayed by the toner, the amount of toner which should be calculated on the basis of the peak position, and the image shown by the toner, the amount of toner which should be calculated on the basis of the peak height, sets out the interests of, shown by the toner and having different densities, in accordance with the difference between the position of the peak according to the reflected wave image of high density, shown by the toner, and the position of the peak according to the reflected wave image of low density, shown by the toner.

5. The device according to claim 1, in which, when the density of the formed image shown by the toner is low, the means of calculation weighs the height of the peak, and not the position of the peak, and calculates the amount of toner on the basis of the peak position and the peak height, and when the density of the formed image shown by the toner is high, the means of calculation weighs the position of the peak, not peak height, and calculates the amount of toner on the basis of the peak position and the peak height.

6. Measuring device for measuring the amount of toner of the image shown by the toner formed on the raw image element of the device forming an image containing
module irradiation with light, is configured for exposure to light of the image displayed by the toner;
module image capture, configured to capture the image shown by the toner, and this module of the image capture has many photodetectors located adjacent to each other; and
the means of calculation, the standard deviation is figurirovanii for more information associated with peak positions of the reflected waves, and the information associated with the peak heights of the reflected waves, from the data obtained by receiving light reflected by the image shown by the toner through a variety of sensors, and to calculate the amount of toner on the basis of at least one of the peak position and area, as well as information related to the density of the formed image shown by the toner.

7. The device according to claim 6, in which the calculator tool calculates the amount of toner on the basis of the position of the peak, when the density of the formed image shown by the toner is high, and calculates the amount of toner on the basis of the square, when the density of the formed image shown by the toner is low.

8. The device according to claim 6, in which when it comes to measuring the amount of toner of images shown by the toner and having a different density, the means of calculation determines the image displayed by the toner, the amount of toner which should be calculated on the basis of the peak position, and the image shown by the toner, the amount of toner which should be calculated on the basis of the square, many of the images shown by the toner and having different densities, in accordance with the difference between the area according to the reflected wave from the expression of high density, shown by the toner, and the area according to the reflected wave image of low density, shown by the toner.

9. The device according to claim 6, in which when it comes to measuring the amount of toner of images shown by the toner and having a different density, the means of calculation determines the image displayed by the toner, the amount of toner which should be calculated on the basis of the peak position, and the image shown by the toner, the amount of toner which should be calculated on the basis of the square, many of the images shown by the toner and having different densities, in accordance with the difference between the position of the peak according to the reflected wave image of high density, shown by the toner, and the position of the peak according to the reflected wave image of low density, shown by the toner.

10. The device according to claim 6, in which, when the density of the formed image shown by the toner is low, the tool will calculate the weighing area and not the position of the peak, and calculates the amount of toner on the basis of the peak position and area, and when the density of the formed image shown by the toner is high, the means of calculation weighs the position of the peak, and not square, and calculates the amount of toner on the basis of the peak position and area.

11. Elimination of the ETS according to claim 6, in which the step of photodetectors, which are located next to each other, does not exceed the product of the optical zoom condenser lens means of image capture and the mean diameter of the toner particles.

12. The device forming the image containing
module imaging, configured to form the image shown by the toner, on the raw image element; and
the measuring device according to any one of claims 1 to 5.

13. The device forming the image containing
module imaging, configured to form the image shown by the toner, on the raw image element, and
the measuring device according to any one of p-11.

14. The method of measuring the quantity of toner image displayed by the toner formed on the raw image element, device imaging, namely, that
irradiated with the light of the image displayed by the toner;
capture the image shown by the toner, using a variety of sensors located near each other;
receive information associated with peak positions of the reflected waves, and information related to the amounts of light reflected waves, from the data obtained by receiving light reflected by the image shown by the toner, e is the first set of photodetectors; and
calculate the amount of toner on the basis of at least one of the position of the peak, the amount of light and information related to the density of the formed image shown by the toner.

15. The method according to 14, where receiving information associated with the amount of light includes receiving information associated with the peak heights of the reflected waves and/or squares of reflected waves.

16. Machine-readable storage medium storing executable computer commands, which when executed by a computer cause the execution of a computer to measure the amount of the toner image displayed by the toner formed on the raw image element, device imaging, and these commands include
commands for exposure to light of the image displayed by the toner;
the command to capture the image shown by the toner, using a variety of sensors located near each other;
commands to retrieve information associated with peak positions of the reflected waves, and the information related to the amounts of light reflected waves, from the data obtained by receiving light reflected by the image shown by the toner through a set of photodetectors, and
commands to calculate the amount of toner on the basis of at least one of the position of the peak, the amount of light and information related to the density of the formed image shown by the toner.



 

Same patents:

FIELD: physics.

SUBSTANCE: system for feeding developer has a device for receiving the developer, which has a docking area for placing the container for feeding the developer with possibility of removal, and a driving gear wheel. The container for feeding the developer has an accommodating area for accommodating the developer, a developer outlet opening, an adjustment element for adjusting orientation of the container for feeding the developer relative the device for receiving the developer, a stopper area for preventing rotation of the container for feeding the developer in the direction of alerting the element for feeding the developer and the driving apparatus.

EFFECT: design of a container for feeding developer, in which the characteristic for output of the developer is high, while preventing rotation of the container for feeding the developer in the direction which is opposite the given direction, and while reducing scattering of the developer.

38 cl, 34 dwg

FIELD: physics.

SUBSTANCE: development cartridge comprises development agent container, development agent mixer arranged in toner-cartridge, feeder to feed developing agent to developing roll, developing roll develop electrostatic image on photo conductor, and power receiver to drive only one gear wheel of gear wheel set of power receiver. Power receiver is arranged to turn in two and more positions to adopt to imager position. Initial position of power receiver is that of reception of input power. Power receiver drive comprises pressure unit, deflector, spring and torsion spring. Power receiver drive is controlled by pressure unit. With pressure unit depressed, power receiver turns into another position of input power reception at the action of torsion spring. This invention may be incorporated with diverse imagers.

EFFECT: development cartridge that may be used in diverse imagers.

6 cl, 6 dwg

FIELD: physics.

SUBSTANCE: developing device used with an image forming device has a cartridge for the developing agent having an outlet opening for releasing the developing agent; a developing cartridge in which the cartridge for the developing agent is detachably fitted and in which there is an inlet opening for the developing agent from the outlet opening of the cartridge for the developing agent; and a connecting element which connects the outlet opening of the cartridge for the developing agent and the inlet opening of the developing cartridge so that the developing agent is fed from the cartridge for the developing agent into the developing cartridge, wherein owing to design of the cartridge for the developing agent, the developing cartridge and the connecting element, flow of the developing agent from the cartridge for the developing agent into the developing cartridge is controlled based on pressure of the developing agent in the developing cartridge.

EFFECT: design of a developing cartridge with a detachable cartridge for developing agent, which enables filling the developing agent by only replacing the detachable cartridge for developing agent, control of flow of the developing agent from the detachable cartridge for the developing agent into the developing cartridge.

35 cl, 15 dwg

FIELD: machine building.

SUBSTANCE: container for developer supply installed into device of developer receiving is actuated in ready position by operator turning container of developer supply in direction of ready position. The disclosed here container consists of containing section to contain developer, of a rotary outlet element for discharge of developer from the containing section and of an element of a driven transmission for engagement with a driven gear arranged in the structure of the developer reception to transfer driving force onto discharge element. Also the element of driven transmission can engage the driven gear when the operator turns the developer supply container into ready position. The element of the driven transmission is loaded for turn of the developer supply container in the ready position when this element is actuated with a driving force.

EFFECT: reduced wear of driven gear and element of driven transmission.

33 cl, 33 dwg

FIELD: physics.

SUBSTANCE: image forming device has: developing apparatus for supplying toner medium to an image carrier; a toner medium container which has a unit for feeding the stored toner medium to the developing apparatus; an element for detecting the amount of toner medium remaining in the container; and a controller for changing supply rate of the feeding unit when the amount of remaining toner medium detected by the detection element is below a given level in order to uniformly maintain the amount of toner medium fed from the container to the developing apparatus.

EFFECT: maintenance of uniform amount of toner medium fed from the container into the developing apparatus in order to prevent a defective image.

27 cl, 8 dwg, 1 tbl

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: 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.

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: 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: 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: 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

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