JP2002211083A - Color image forming apparatus, color calibration method, and method of ordering consumables thereof - Google Patents

Abstract

(57) [Problem] To provide an environment in which the amount of color calibration work can be reduced without avoiding color calibration and color calibration can be easily performed. SOLUTION: In order to promote the execution of color calibration in addition to reducing the amount of work at the time of color calibration so that a user of a color image forming apparatus does not avoid color calibration by utilizing a network. By providing a means for lowering the price of consumables next time in accordance with the number of times color calibration is executed, an environment is provided to the user that facilitates color calibration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a color image forming apparatus, a color calibration method, and a method for ordering consumables thereof.

[0002]

2. Description of the Related Art In recent years, color image forming apparatuses, such as color laser printers and color copiers, for printing color images have become widespread. .

A color image forming apparatus, one of which, is required to be always stable with accurate color management. To achieve this, color image forming apparatuses such as color printers and color copiers are independent of temperature and humidity and the degree of wear of the machine.Moreover, the color expression is always the same according to the paper material used. It is impossible if a color image cannot be expressed at the level.

However, in actuality, the results of image printing by a color laser printer, a color copier or the like are influenced by the material and thickness of the paper used for color printing, the roughness of the paper printing surface, and the temperature and humidity surrounding the color image forming apparatus. The subtle hue changes in response. Further, a change over time of a consumable such as a toner or a photoreceptor of a color image forming apparatus also affects a change in color.

[0005] The best solution to these problems is to allow the user to use only a limited number of sheets of paper in the actual use of the color image forming apparatus, always use the same environment throughout the year, or It is only necessary to add a restriction such as not to leave the apparatus unused for a period. However, doing so in practice cannot be realized because the usability of the color image forming apparatus deteriorates.

For this reason, the methods currently used include a control section of the color image forming apparatus, environmental conditions such as temperature and humidity surrounding the color image forming apparatus, a consumption state of each unit constituting the color image forming apparatus, Further, there is a method of detecting a mechanical variation of each image forming apparatus and performing image forming control adapted to the detection result.

However, in this method, it is necessary to obtain the data of the parameters to be controlled by experiments or the like and establish it as a control method, which requires a lot of work. However, this method has been put to practical use because it is unlikely that the color will deviate significantly in practical use.

Hereinafter, the contents will be described with a focus on the contents.

In the color image forming apparatus, color calibration is performed by a configuration as shown in FIG. In the configuration of the color image forming apparatus of FIG. 13, a conventional color image forming operation will be described, and then a conventional calibration example of the color image forming apparatus will be described.

In order to perform color superposition of four colors of black, cyan, magenta, and yellow used for forming a color image, the image data is formed by an image data forming unit.
After the dot data of each color of cyan, magenta, and yellow is rasterized, it is sent to the configuration of the color image forming apparatus of FIG. 13 for each color.

First, black image data is sent, and the image data is sent to the LSU (Laser Scann).
A driving signal for emitting a laser beam is input to a semiconductor laser incorporated in the sing unit 50.

In the color image forming apparatus, the LSU 50 switches between laser emission and extinguishing for each dot in accordance with the emission signal, and the photosensitive belt 52 whose surface has been neutralized by the neutralizer 51 is uniformly negatively charged by the charger 61. An electrically latent image that cannot be visually recognized is formed on the photoreceptor belt 52 charged with the toner.

The color image forming apparatus includes a photosensitive belt 52.
When the black developing roller 57, which is a component of the black developing device 53, comes into contact with the photosensitive belt 52, the latent image formed on the latent image forms a developing bias having a specified voltage value specified by a control system of the image forming apparatus. Is developed on the photoreceptor belt 52 by the force of the potential difference of. As a result, a black toner image is formed on the photosensitive belt 52, and the toner image is transferred onto the intermediate transfer belt 62.

Here, if the printing mode is a single-color black printing mode, the black toner image on the intermediate transfer belt 62 is transferred to a paper sheet fed from a paper cassette 65 at a position of a paper transfer roller 63. Transferred to 66.

The toner remaining on the intermediate transfer member belt 62 without being transferred to the paper 66 is scraped off by the intermediate transfer member cleaner 69 and held in the intermediate transfer member cleaner 69 as discharged toner. .

However, if the printing mode is a color printing mode of four colors, the operation of holding the black toner image on the intermediate transfer belt 62 as it is is performed simultaneously, and the color image forming apparatus forms an image of the next color. Perform the operation.

In the color image forming apparatus, as the next color image forming operation, cyan image data is sent from an image data forming unit (not shown), and the photosensitive belt 52 is subjected to the same process as the black image forming operation. A latent image is formed thereon, and the cyan developing roller 58, which is a component of the cyan developing device 54, comes into contact with the photosensitive belt 52, so that the photosensitive belt 5
2, a cyan toner image developed with the cyan toner is formed.

Similarly, the process of transferring the cyan toner image to the intermediate transfer belt 62 is followed. In the case of the four-color printing mode, the image is formed on the intermediate transfer belt 62 first. The cyan toner image is transferred onto the intermediate transfer belt 62 such that the image position overlaps the black toner image from the leading edge to the trailing edge of the image.

Further, the magenta and yellow toners also sequentially proceed in the same process, and are sequentially developed by the magenta developing unit 55 and the yellow developing unit 56, so that the magenta developing roller 59 comes into contact with the photosensitive belt 52. To form a magenta toner image, and the yellow developing roller 60 contacts the photosensitive belt 52 to form a yellow toner image. The toner images formed on the photosensitive belt 52 are sequentially transferred onto the intermediate transfer belt 62.

On the intermediate transfer belt 62, the toner image which is color-superimposed so that the image areas coincide with each other has a certain margin between the leading edge of the paper image area and the leading edge of the paper. At a time when there is enough time, a sheet 66 is picked up from a sheet cassette 65 provided with a dedicated sheet guide for each sheet.
The paper 7 is picked up and passes through a paper transport path that passes for paper feeding.

The timing of a detailed position of the paper 66 is adjusted by the rotation of the registration roller 68, and the toner image overlapping for each color at the position of the paper transfer roller 63 overlaps the paper 66 to transfer the paper.

The sheet 66 and the toner image transferred onto the sheet 66 are conveyed through the sheet conveying path as they are, and protrude from the leading end of the sheet 66 toward the fixing unit 19, and have a heater inside the fixing unit 19. Fixing roller 65 and paper 6
The toner image on the sheet is melted by the heat when the sheet 6 comes in contact with the sheet, and the toner of each color that has been superimposed is mixed and fixed on the sheet 66. When the image formation of the color image on the sheet 66 is completed, the color image forming apparatus discharges the sheet 66 to a discharge tray outside the apparatus by the driving force of the rotation of the discharge roller 64.

The color image forming apparatus is calibrated so that the color of the discharged printed material does not deviate from the color required to be input to the image data forming section and form a color image. It cannot be realized unless it is in a state.

As a method of the color calibration, there is a method of controlling the color image forming apparatus so that the color is not largely deviated in advance.

FIG. 14 is a block diagram showing the relationship between each unit in the conventional color image forming apparatus and the control section of the color image forming apparatus.

The image forming apparatus control unit 76 determines from the image forming table data unit 79 in which the optimum color image forming conditions are converted into table data, the necessary conditions determined based on the environmental conditions in which the color image forming apparatus is placed. Pull out the parameters.

Next, the image forming apparatus control section 76 sends a command to the LSU control section 70 using the extracted parameters.
Send operation instructions and their parameters. LS accordingly
The U control unit 70 controls the operation of the LSU 71 according to the parameters.

Further, the image forming apparatus control section 23 simultaneously sends to the high voltage control section 80 the parameters extracted from the image forming table data section of each unit and the operation instruction.

The high voltage control unit 80 controls the voltage applied to the charger 72, the neutralizer 73, the respective color developing devices, the intermediate transfer roller 74, and the paper transfer roller 75 and the value of the current to be supplied in accordance with the parameters.

As the image formation proceeds, the image forming apparatus control section 76 also issues a parameter and an operation instruction to the fixing device control section 77. The fixing device control section 77 controls the fixing device 78 according to the type of paper and the mode in printing, and performs control by changing the temperature and the rotation speed of the rollers inside the fixing device 78 to perform fixing.

FIG. 15 is a diagram conceptually showing a table configuration of the image forming table data section 79.

When an image forming apparatus forms a color image, the image forming apparatus controls the operation of each block constituting the apparatus. High-quality color images cannot be obtained unless the control is performed precisely.

For this reason, in a conventional color image forming apparatus, the color image forming apparatus, such as the surrounding environment such as the temperature and humidity in which the apparatus is placed, and the degree of consumption and the frequency of use of the consumables constituting the apparatus, are used. When forming, control is performed after including factors related to image quality so that the same high-quality image can be printed at all times.

The parameters used for the control are shown in the table of FIG. 15, and the values of the process parameters required for controlling the color image formation are converted into data for each factor such as temperature and humidity.

FIG. 15 shows temperature and humidity, but in actual use, in addition to these two parameters, such as the degree of wear and the frequency of use of the color image forming apparatus and its consumables are added. Table data, and the table data becomes complicated.

Examples of the process parameters include a developing bias, a laser power, an image forming speed, a paper transfer bias, a charging bias to a photoconductor, a fixing temperature of a fixing unit,
There are various things such as the amount of oil supplied to the fixing device.

FIG. 16 shows a pattern page 81 for color calibration printed from the color image forming apparatus, and the density of each color of the color calibration card 82 as a reference and the density of each color of the pattern page 29 are visually compared. 3 illustrates a flow of performing color calibration by changing the table data value of the image forming table data unit 79 of the color image forming apparatus according to the comparison result.

The pattern page 81 is formed of a rectangular pattern in which the density value changes stepwise for each color. When the pattern page 81 is printed at the current setting value of the table data value of the image forming table data section 79, Is arranged in the center of the sheet, and the print result when the value is increased or decreased from the current setting is shown in the vertical direction.

If the currently set density value of each color in the center row of the pattern page 81 is visually inconsistent with the density value of the pattern shown on the color calibration card 82, the image forming table data The table data values of the unit 79 are changed with an approximate eye to how far the pattern pages 81 are far apart.

After the change is completed, the pattern page 81 is printed again, the density is compared with the color calibration card 82, and the process of printing and comparing the density is repeated, so that the setting which is finally considered to be optimal is set. And fix it there. The color calibration is completed by repeating this operation.

FIG. 17 shows one of the conventional color calibration methods. In the color calibration, three halftones of cyan, magenta and yellow overlap, and a composite black composed of three color toners is imaged on paper. This is a method of performing color calibration by determining whether the formed color is close to black (gray) and adjusting the color so as to approach black (gray).

The gray balance pattern page 83 is printed from the color image forming apparatus, and the color of each of the superimposed cyan, magenta, and yellow patterns is visually determined.

In the gray balance pattern page 83 printed from the color image forming apparatus, three colors when the yellow color is fixed at a prescribed data level and cyan and magenta are changed from a prescribed data level to upper and lower levels. The color of the overlaid composite black is visually compared and determined to determine a pattern closest to black (gray).

The numerical values of cyan and magenta described in the vertical and horizontal directions of the page corresponding to the position of the pattern close to the black (gray) are searched, and the numerical values are inputted from the control panel 84 attached to the main body of the color image forming apparatus. To go.

On the control panel 84, a color calibration menu is selected from a hierarchically structured menu using each key button, and the color setting currently set on the LCD display unit 85 as a display unit is selected. The cyan value of the calibration is displayed, and the cyan value selected from the gray balance pattern page 31 is input using each key button.

As the next operation, after inputting the cyan value,
Enter the value of magenta by key operation. Then, the gray balance pattern page 31 whose value has been changed is printed out again, and the pattern closest to black (gray) is determined.

At this time, if the values of cyan and magenta described in the vertical and horizontal directions of the page are both ± 0, the color calibration is completed. Otherwise, the values are input from the control panel 85 again. By repeating the work of printing the gray balance pattern page 31,
Perform color calibration.

The parameters of the color image forming apparatus which fluctuate according to the values input from the control panel 85 are subjected to gamma correction processing for adjusting the gradation characteristics of the image data input to the color image forming apparatus. The correction parameter of the block in which it is located varies. Here, if the block on which the gamma correction process is being performed is in the form of a data table, the value of the table itself changes.

The above is the color calibration method used in the conventional color image forming apparatus.

[0050]

However, in the above-described color calibration in the conventional method, when the control of the image forming apparatus is performed only by the table data, the accuracy of the color calibration is affected by variations between the apparatuses. I can't get what I want.

In a system in which a pattern page for color calibration is printed for the user and the user performs the color calibration himself, consumables such as paper and toner are excessively consumed every time the color calibration is performed. In addition, the burden on the user is also a great burden.

Further, in this method, it is necessary for the user to evaluate the density and chromaticity of an image printed as a pattern page for color calibration, and the amount of work expended for this evaluation is burdensome for the user.

Due to the cost problem of these consumables and the inconvenience of the color calibration, the frequency of performing the color calibration by the user is reduced, and the color calibration itself is stopped.

As a result, the frequency of performing the color calibration is reduced, so that the color image forming apparatus does not perform color matching, and the image quality of the color image forming apparatus is reduced.

Therefore, according to the present invention, in addition to reducing the amount of work at the time of color calibration so as not to avoid color calibration, the price of the next consumable is reduced according to the number of times color calibration is executed. A color image forming apparatus capable of stabilizing color quality by providing an environment in which color calibration is facilitated and providing a user with an easy color calibration environment, a color calibration and a method of ordering consumables thereof. The purpose is to provide.

[0056]

In order to solve this problem, a color image forming apparatus according to the present invention comprises: a network connecting means for connecting the color image forming apparatus to a network; a control means for performing color calibration; Calibration data storage means for storing calibration data of the color calibration adjustment result, and transmitting the calibration data stored in the calibration data storage means to a computer terminal via the network means And a transmitting means for performing the operation.

Thus, the color image forming apparatus can always be used in a stable state after color calibration.

According to another aspect of the present invention, there is provided a color image forming apparatus, comprising: a control unit for performing color calibration; and a calibration data storage for storing calibration data of an adjustment result by the color calibration. Means for storing the calibration data stored in the calibration data storage means, and a removable recording medium for recording the calibration data, and a color calibration execution status based on the calibration data recorded on the recording medium. Is to manage.

Thus, the color image forming apparatus can always be used in a stable state after color calibration.

Further, in order to solve this problem, a color image forming apparatus according to the present invention comprises a network connecting means for connecting the color image forming apparatus to a network, and a color calibration input through the network connecting means. Control means for performing color calibration based on data; calibration data storage means for storing calibration data of an adjustment result by the color calibration; and the adjusted calibration stored in the calibration data storage means And transmitting means for transmitting the adjusted calibration data to a computer terminal connected to the network via the network connection means.

In this manner, the color image forming apparatus can always be used in a stable state after color calibration.

In order to solve this problem, a color image forming apparatus according to the present invention comprises a control means for performing color calibration based on color calibration data input from a color image input means; A calibration data storage unit for storing calibration data of an adjustment result obtained by the calibration, and a removable recording medium for recording the adjusted calibration data stored in the calibration data storage unit. It is.

As a result, it is possible to always use the color-calibrated and stable state.

Further, in order to solve this problem, the color calibration method of the present invention forms an image of a color pattern used for performing color calibration and outputs the color pattern at least in cyan, magenta, yellow and black. Composed of four or more colors including
The color pattern uses a plurality of gradation change patterns having different densities, and adjusts the density in the color calibration by changing at least one of a voltage applied to the toner and a voltage applied to the photoconductor. It is.

As a result, a high-quality color image obtained by color matching can be obtained.

Further, in order to solve this problem, the color calibration method of the present invention forms and outputs a color pattern for performing color calibration,
The color pattern includes at least four colors including cyan, magenta, yellow, and black,
The color pattern uses a plurality of gradation change patterns having different densities, and the density adjustment in the color calibration is performed by changing a gamma correction process for correcting the gradation.

Thus, a high-quality color image which is color-matched can be obtained.

Further, in order to solve this problem, according to the color calibration method of the present invention, the input color calibration data has information necessary for the gamma correction processing for correcting the gradation, and the gamma correction processing is performed. Is changed to adjust the density at the time of calibration.

In this way, a high-quality color image with color matching can be obtained.

Further, in order to solve this problem, the color calibration method of the present invention prints out a color pattern when performing color calibration, and an image having a uniform density value inside the pattern of the color pattern. Density control by controlling one or more of the color patterns on one sheet of paper, and changing the density adjustment in the color calibration by a gamma correction process for correcting gradation. Is what you do.

In this way, a high-quality color image that is color-matched can be obtained.

Further, in order to solve this problem, according to the color calibration method of the present invention, when performing color calibration, a color pattern is image-formed and output, and the color pattern is at least cyan, magenta, yellow and black. And the color pattern uses a plurality of gradation change patterns having different densities, and the voltage applied to the paper transfer roller when performing the paper transfer for the density adjustment in the color calibration, or The density is adjusted by changing and adjusting the value of the current supplied to the transfer roller.

In this way, a high-quality color image that is color-matched can be obtained.

In order to solve this problem, according to the color calibration method of the present invention, when performing color calibration, a color pattern is printed out, and a uniform density value is provided within the pattern frame of the color pattern. Control is performed so that an image is formed, and one or a plurality of the color patterns are formed on one sheet, and the density adjustment in the color calibration is performed by applying a voltage applied to a sheet transfer roller when performing a sheet transfer. Alternatively, the density is adjusted by changing and adjusting the current value flowing through the transfer roller.

In this way, a high-quality color image that is color-matched can be obtained.

Further, in order to solve this problem, the color calibration method of the present invention prints out a color pattern when performing color calibration,
The inside of the pattern frame of the color pattern is controlled so that an image having a uniform density value is formed.
One or a plurality of sheets of paper are used, and the density adjustment in the color calibration is performed by changing at least one of a voltage applied to the toner and a voltage applied to the photoconductor. is there.

In this way, a high-quality color image that is color-matched can be obtained.

In order to solve this problem, according to the color calibration method of the present invention, when performing color calibration, a color pattern is printed out, and a uniform density value is set in the pattern frame of the color pattern. By controlling so that an image is formed, one or a plurality of the color patterns are formed on one sheet, and the density adjustment in the color calibration is changed by changing a gamma correction process for correcting a gradation. This is to adjust the density.

In this way, a high-quality color image that is color-matched can be obtained.

Further, in order to solve this problem, according to the color calibration method of the present invention, when performing color calibration, the color pattern is printed out, and a uniform density value is set in the pattern frame of the color pattern. Is controlled so that an image is formed, and one or more of the color patterns are formed on one sheet of paper, and the density adjustment in the color calibration is applied to a sheet transfer roller when performing sheet transfer. The density is adjusted by changing and adjusting a voltage or a current value flowing through the transfer roller.

In this way, a high-quality color image that is color-matched can be obtained.

Further, in order to solve this problem, the color calibration method of the present invention forms and outputs a color pattern when performing color calibration.
The color pattern includes at least four colors including cyan, magenta, yellow, and black,
The color pattern is controlled to be a plurality of gradation change patterns having different densities, and a density applied in the color calibration is a voltage applied to a paper transfer roller when performing paper transfer, or a current value passed through the transfer roller. The density is adjusted by changing and adjusting.

In this way, a high-quality color image that is color-matched can be obtained.

Further, in order to solve this problem, the color calibration method of the present invention has a reference color pattern card prepared as a separate sheet, which is used as a reference when performing color calibration.
When performing the color calibration, the print result of the output color pattern is compared with the density of the reference color pattern card prepared as a separate sheet in advance, and the density of each color is adjusted.

In this way, a high-quality color image that is color-matched can be obtained.

In order to solve this problem, according to the color calibration method of the present invention, when performing color calibration, a print result of an output color pattern is measured for density, and the result of the density measurement is displayed on a display unit. And the density of each color is adjusted based on the display result.

In this way, a high-quality color image that is color-matched can be obtained.

Further, in order to solve this problem, the color calibration method of the present invention prints out a color pattern when performing color calibration,
In the pattern frame of the color pattern, a uniform density value is controlled so that an image is formed, and the color pattern is constituted by one or a plurality of sheets on one sheet, and the density adjustment in the color calibration is performed. The density is adjusted by changing the value of the gamma correction table for correcting the gradation.

In this way, a high-quality color image that is color-matched can be obtained.

In order to solve this problem, the color calibration method of the present invention uses a color calibration data storage means provided in a color image forming apparatus or a color calibration data stored in a computer terminal connected to a network. Receiving the color calibration data regarding the adjustment result by the application via the network, determining the usage status of the color image forming apparatus, and transmitting control data corresponding to the usage status to the color image forming apparatus based on the determination result. Supply.

In this way, a high-quality color image that is color-matched can be obtained.

Further, in order to solve this problem, a color calibration method according to the present invention collects a recording medium storing calibration data as an adjustment result by color calibration, and forms a color image from the color calibration data. The use state of the apparatus is determined, and control data corresponding to the use state of the color image forming apparatus is supplied to the color image forming apparatus based on the result of the determination.

In this manner, a high-quality color image with color matching can be obtained.

In order to solve this problem, a color calibration method according to the present invention determines the use state of a color image forming apparatus from the adjusted color calibration data, and based on the determination result, determines whether the color image forming apparatus is in use. The control data according to the use condition of the forming apparatus is supplied through the network.

In this way, a high-quality color image that is color-matched can be obtained.

Further, in order to solve this problem, a color calibration method according to the present invention collects a recording medium storing calibration data as a result of adjustment by color calibration, and recovers the color image from the color calibration data. The use state of the color image forming apparatus is determined based on the use result of the color image forming apparatus, and control data of the color image forming apparatus is supplied according to the use state of the color image forming apparatus.

In this manner, a high-quality color image that is color-matched can be obtained.

In order to solve this problem, according to the consumable supply ordering method of the present invention, color calibration data stored in a color image forming apparatus or a computer terminal connected to a network is received via the network. And, based on the received color calibration data, determine the use status of the color image forming apparatus,
The selling price of consumables constituting the color image forming apparatus is determined in accordance with the result of the use status determination.

Thus, in the next sale of the consumables of the color image forming apparatus, the price can be changed from the normal selling price in accordance with the use situation and sold, so that a high quality color image with color matching can be obtained.

Further, in order to solve this problem, a consumables ordering method according to the present invention uses a removable recording medium attached to a color image forming apparatus which stores calibration data as a result of adjustment by color calibration. Based on the color calibration data collected and recorded on the recording medium, the use status of the color image forming apparatus is determined, and the selling price of the consumables of the color image forming apparatus is determined according to the use status determination result. Is determined.

In this case as well, the consumables of the color image forming apparatus can be sold with the price changed from the normal selling price in the next sales of the consumables according to the use situation, so that a high-quality color image with color matching can be obtained.

In order to solve this problem, in the consumables ordering method according to the present invention, the use status of the color image forming apparatus is determined by the number of times the user has performed color calibration on the color image forming apparatus. It was done.

Thus, the client can determine that the data obtained in the color calibration is to be analyzed.

As described above, it becomes possible for the user of the color image forming apparatus to use the color image forming apparatus which has been in the calibration state with a small cost and man-hours, and to obtain a high quality color image which is color-matched. be able to.

[0105]

According to the first aspect of the present invention, in a color image forming apparatus for printing and outputting a color image, a network connecting means for connecting the color image forming apparatus to a network and performing color calibration. Control means, calibration data storage means for storing the calibration data of the color calibration adjustment result, and transmitting the calibration data stored in the calibration data storage means to the computer terminal via the network means to the computer terminal A color image forming apparatus having a transmitting unit, wherein data of color calibration is stored in a data storage unit, and the data is read or written by an administrator or a support service of the color image forming apparatus via a network unit. By always an effect that can be used in a stable state of being color calibration.

The invention according to claim 2 of the present invention
Control means for performing color calibration, calibration data storage means for storing calibration data of an adjustment result by color calibration, and a removable recording medium for recording calibration data stored in the calibration data storage means; A color image forming apparatus that manages color calibration execution status based on calibration data recorded on a recording medium, stores color calibration data in data storage means, The color calibration data is recorded on a recording medium, and an administrator or a support service manages the calibration data by reading or writing the data, and always uses the color calibration in a stable state. An effect that can be.

Further, according to a third aspect of the present invention, there is provided a network apparatus for connecting a color image forming apparatus to a network, and color calibration based on color calibration data input via the network connection means. A calibration data storage unit for storing calibration data of an adjustment result by color calibration, and the adjusted calibration data stored in the calibration data storage unit to a network via a network connection unit. A transmission unit for transmitting the adjusted calibration data to a connected computer terminal, wherein the color calibration data is stored in a data storage unit, and the data is stored in a network unit. An administrator or a support service reads and writes data from another computer terminal via the other computer terminal, so that the color image forming apparatus can always be used in a color-calibrated and stable state. .

The invention according to claim 4 of the present invention provides:
A control unit that performs color calibration based on the color calibration data input from the color image input unit; a calibration data storage unit that stores calibration data of an adjustment result by the color calibration; and a calibration data storage unit. A color image forming apparatus having a removable recording medium for recording the stored adjusted calibration data, storing the color calibration data, recording the color calibration data on the recording medium, By managing the calibration data by reading and writing data, the administrator and support service of the image forming apparatus
It has the effect that it can always be used in a stable state after color calibration.

Further, according to the invention of claim 5 of the present invention, a color pattern used for performing color calibration is image-formed and output, and the color pattern includes at least four colors including cyan, magenta, yellow and black. The color pattern uses a plurality of gradation change patterns with different densities, and the density adjustment in color calibration is adjusted by changing at least one of the voltage applied to the toner and the voltage applied to the photoconductor. This is a color calibration method that performs stable color management.

Further, the invention according to claim 6 of the present invention provides:
An image is formed and output of a color pattern for performing color calibration, and the color pattern is at least cyan,
The color pattern is composed of four or more colors including magenta, yellow, and black, and the color pattern uses a plurality of gradation change patterns with different densities. The density adjustment in color calibration and the gamma correction process for correcting the gradation are changed. This is a color calibration method for adjusting the density by performing the color adjustment, and has an effect that stable color management can be performed.

Further, according to a seventh aspect of the present invention, the input color calibration data has information necessary for the gamma correction processing for correcting the gradation, and the gamma correction processing is changed. This is a color calibration method for performing density adjustment at the time of calibration, and has an effect that stable color management can be performed.

The invention according to claim 8 of the present invention provides
When performing color calibration, a color pattern is printed out, and the inside of the color pattern is controlled so that an image with a uniform density value is formed. The color pattern is composed of one or a plurality of color patterns on one sheet of paper. Along with
This is a color calibration method for adjusting the density by changing the gamma correction processing for correcting the gradation in the density adjustment in the color calibration, and has an effect that stable color management can be performed.

Further, according to the ninth aspect of the present invention, when performing color calibration, a color pattern is image-formed and output, and the color pattern includes at least four colors including cyan, magenta, yellow, and black. The color pattern uses a plurality of gradation change patterns with different densities, and changes the voltage applied to the paper transfer roller or the current value passed to the transfer roller when performing the paper transfer for the density adjustment in color calibration. This is a color calibration method for adjusting the density by performing adjustment, and has an effect that stable color management can be performed.

Further, according to the tenth aspect of the present invention, when performing color calibration, a color pattern is printed out so that a uniform density value is formed in an image within a pattern frame of the color pattern. Control, and one or more color patterns are formed on one sheet of paper. The density adjustment in the color calibration is performed by controlling the voltage applied to the paper transfer roller or the current value flowing through the transfer roller when performing the paper transfer. This is a color calibration method for adjusting the density by changing and adjusting, and has an effect that stable color management can be performed.

Further, according to the eleventh aspect of the present invention, when performing color calibration, a color pattern is printed out so that an image having a uniform density value is formed in the pattern frame of the color pattern. The color pattern is composed of one or a plurality of color patterns on one sheet,
This is a color calibration method in which the density is adjusted by changing at least one of the voltage applied to the toner and the voltage applied to the photoconductor in the color calibration, and it is said that stable color management can be performed. Has an action.

According to the twelfth aspect of the present invention, when performing color calibration, a color pattern is printed out so that a uniform density value is formed in an image within a pattern frame of the color pattern. Control, and one or more color patterns are formed on one sheet of paper.
This is a color calibration method for adjusting the density by changing the gamma correction processing for correcting the gradation, and has the effect that stable color management can be performed.

Further, in the invention according to the thirteenth aspect of the present invention, when performing color calibration, a color pattern is printed out so that a uniform density value is formed within the pattern frame of the color pattern. The color pattern is controlled with one or more color patterns per sheet, and the density adjustment in color calibration is performed by applying the voltage to the paper transfer roller when transferring the paper, or the current value flowing to the transfer roller. Is a color calibration method that adjusts the density by changing and adjusting
This has the effect that stable color management can be performed.

According to the fourteenth aspect of the present invention, when performing color calibration, a color pattern is formed and output, and the color pattern is composed of at least four colors including cyan, magenta, yellow, and black. In addition to the configuration, the color pattern is controlled to be a plurality of gradation change patterns having different densities, and the voltage applied to the paper transfer roller when performing the paper transfer for the density adjustment in the color calibration, or the current value passed to the transfer roller Is a color calibration method for adjusting the density by changing and adjusting the color, and has the effect that stable color management can be performed.

Further, the invention according to a fifteenth aspect of the present invention has a reference color pattern card prepared as a separate sheet in advance, which serves as a reference when performing color calibration. This is a color calibration method that compares the density of the printed pattern with the density of a reference color pattern card prepared in advance as a separate sheet, and adjusts the density of each color.The effect is that stable color management can be performed. Have.

Further, according to the invention of claim 16 of the present invention, when performing color calibration, the print result of the output color pattern is measured for density, the result of the density measurement is displayed on the display unit, and the display is performed. This is a color calibration method for adjusting the density of each color based on the result, and has the effect that stable color management can be performed.

Further, in the invention according to claim 17 of the present invention, when performing color calibration, a color pattern is printed out so that a uniform density value is formed within the pattern frame of the color pattern. Color calibration is performed by controlling one or a plurality of color patterns on one sheet, and adjusting the density in color calibration by changing the value of a gamma correction table for correcting gradation. This method has a function of performing stable color management.

The invention according to claim 18 of the present invention is directed to a color calibration data storage means provided in a color image forming apparatus, or an adjustment result by color calibration stored in a computer terminal connected to a network. A color calibration method for receiving color calibration data related to the color image forming apparatus via a network, determining a use state of the color image forming apparatus, and supplying control data according to the use state to the color image forming apparatus based on the determination result. There is an effect that stable color management can be performed.

Further, according to the nineteenth aspect of the present invention, a recording medium storing calibration data as a result of adjustment by color calibration is collected, and the use state of the color image forming apparatus is determined from the color calibration data. A color calibration method for supplying control data to the color image forming apparatus according to the use state of the color image forming apparatus based on the determination result,
This has the effect that stable color management can be performed.

According to a twentieth aspect of the present invention, the usage state of the color image forming apparatus is determined from the adjusted color calibration data, and the usage state of the color image forming apparatus is determined based on the determination result. This is a color calibration method for supplying corresponding control data via a network, and has an effect that stable color management can be performed.

Further, according to the invention of the twenty-first aspect of the present invention, the recording medium storing the calibration data of the adjustment result by the color calibration is collected, and the use status of the color image forming apparatus is determined from the color calibration data. A color calibration method for supplying control data of the color image forming apparatus in accordance with the use state of the color image forming apparatus based on the determination result,
This has the effect that stable color management can be performed.

According to a twenty-second aspect of the present invention, color calibration data stored in a color image forming apparatus or a computer terminal connected to a network is received via a network, and the received color calibration data is received. This is a consumables ordering method that determines the usage status of the color image forming apparatus based on the calibration data and determines the selling price of the consumables constituting the color image forming apparatus according to the usage status determination result. By analyzing the color calibration data, it is possible to add various added values to the color image forming apparatus.

Further, the invention according to claim 23 of the present invention collects a removable recording medium attached to a color image forming apparatus which stores calibration data as a result of adjustment by color calibration, and Based on the color calibration data recorded in the color image forming apparatus, the usage status of the color image forming apparatus is determined, and the sales price of the consumables of the color image forming apparatus is determined according to the determination result of the usage status. There is an effect that a client or the like can add various added values to the color image forming apparatus by analyzing the color calibration data.

In the invention according to claim 24 of the present invention, the usage status of the color image forming apparatus is a consumables ordering method which is the number of times the user has performed color calibration on the color image forming apparatus. There is an effect that a client or the like can add various added values to the color image forming apparatus by analyzing the color calibration data.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. In these drawings, members having the same functions are denoted by the same reference numerals, and duplicate descriptions are omitted.

FIG. 1 is an explanatory diagram relating to the exchange of color calibration data, FIG. 2 is a block diagram showing a connection state between a color calibration data unit and a network, and FIG. 3 is a diagram using a color calibration data medium. FIG. 4 is a block diagram showing a state in which the color calibration data moves, FIG. 4 is a block diagram showing a connection state between the color calibration data section and the network including an image input section, and FIG. FIG. 6 is a block diagram showing a state in which the color calibration data moves using the medium including the image input unit, and FIG. 6 shows a case where it is difficult to adjust the color calibration when the remaining amount of toner in the developing device is small. FIG. 7 shows an example of a severe environment when the color image forming apparatus is used. FIG. 8, FIG. 8 is a diagram showing an example of a case where process data is updated according to the environment, FIG. 9 is a configuration diagram when color calibration is automatically performed by the density sensor, and FIG. Schematic diagram, FIG.
1 is a diagram showing an example of an image pattern used when performing color calibration automatically, and FIG. 12 is an explanatory diagram showing a user's exchange between the color image forming apparatus side and a maker / service company / client side.

In the present embodiment, as shown in FIG. 1, when the color image forming apparatus 1 performs the color calibration, the setting conditions at the time of the color calibration, the environmental data of the temperature and the humidity, and the Life data and the like are recorded in the color image forming apparatus 1.

In the intranet server 2 connected to the department, the color calibration data is periodically collected, and the color calibration data is collectively stored in a large-capacity storage device such as a hard disk in the intranet server 2. Keep it.

The service center 3 which manages the color image forming apparatus 1 stores the color calibration data stored in the intranet server 2 from the department intranet via the Internet, which has a wider network. Absorb.

The service center 3 may be a department of a color image forming apparatus manufacturer or a specialized company that manages color image forming apparatuses. The service center 3 uses the absorbed color calibration data to grasp the state and environment of the color image forming apparatus 1 and to form an optimal color image. Or a material for determining whether or not the color image forming apparatus 1 is in an irregular state.

If the service center 3 considers that it is better to provide some kind of follow-up or support to the color image forming apparatus 1 as a result of the determination, the service center 3 explains the situation to the user via the Internet. Or a service person is dispatched to perform maintenance of the color image forming apparatus 1.

In FIG. 1, the service center 3 which manages the color image forming apparatus 1 via the Internet every time the color calibration data is not temporarily stored in the server 2 of the intranet, but is stored in the server 2 each time. It is also possible to take in color calibration data.

In this case, the complexity of the service center 3 increases, but since the service center 3 can finely follow the color image forming apparatus 1, the color image forming apparatus 1 can be used in a good state. .

FIG. 2 includes the connection between the color calibration data unit and the network, which are the features of the present invention, in addition to the units of the conventional color image forming apparatus and the control unit of the color image forming apparatus (FIG. 14). FIG. 4 is a block diagram showing a state in which the camera is in a closed state.

In FIG. 2, LSU 4, LSU control unit 5, static eliminator 6, charger 7, black developing unit 8, cyan developing unit 9, magenta developing unit 10, yellow developing unit 11, high voltage control unit 12, image forming Device control unit (control unit) 13,
The configurations of the image forming table data 14, the fixing unit control unit 15, the fixing unit 16, the intermediate transfer roller 17, and the paper transfer roller 18 are the same as those in FIG.
Description is omitted.

As described in the background art, after the color calibration is performed and the color image forming apparatus is color-calibrated, the color calibration data section (calibration data storage means)
At 19, color calibration data is recorded.

This color calibration data section 1
The color calibration data 9 connects the color calibration data unit 19 to the network 21 via the network connection unit (network connection unit) 20.

At present, the Internet is used as an example of the network 21. A service center (client) 22 distant from the color image forming apparatus is connected by a network 21, and the color calibration data of the color calibration data unit 19 is transmitted to the service center (client) 2 through the network 21.
2 and, conversely, data of the service center (client) 22 is sent to the color calibration data unit 19 and the image forming apparatus control unit.

FIG. 3 shows, in addition to the units in the conventional color image forming apparatus and the control section of the color image forming apparatus,
FIG. 3 is a block diagram illustrating a state in which color calibration data moves using a medium for color calibration data, which is a feature of the present invention.

In FIG. 3, LSU4, LSU
Control unit 5, static eliminator 6, charger 7, black developing device 8, cyan developing device 9, magenta developing device 10, yellow developing device 1
1, high voltage control unit 12, image forming apparatus control unit 13, image formation table data 14, fixing unit control unit 15, fixing unit 1
6. Intermediate transfer roller 17, paper transfer roller 18, color calibration data section 19, service center 2
2 is the same as that of FIG. 2 described above, and the description is omitted.

After the color calibration is performed as in the conventional case and the color image forming apparatus is color-calibrated, the color calibration data is recorded in the color calibration data section 19.

This color calibration data section 1
9 is recorded on the medium of the color calibration data media recording unit (storage medium) 23 via the image forming apparatus control unit 13. Color calibration data media recording unit 2
The third medium is carried to the service center (client) 22 by a manager of the color image forming apparatus or a service person coming from the service center (client) 22.

Analysis and determination of the color calibration data are performed in the service center (client) according to the data recorded on the medium, and various responses are made to the color image forming apparatus.

FIG. 4 is a block diagram showing a state in which an image input unit (image input means) 24 is added to the block diagram of the present invention shown in FIG.

After the color calibration is performed as in the conventional case, or after the color calibration including the image input unit 24 is performed and the color image forming apparatus is color-calibrated, the color calibration data unit 19 is obtained. The color calibration data is recorded in the.

This color calibration data section 1
The color calibration data 9 connects the color calibration data unit 19 and the network 21 via the network connection unit 20.

At present, the Internet is used as an example of the network 21. A service center (client) 22 distant from the color image forming apparatus is connected by a network 21, and the color calibration data of the color calibration data unit 19 is transmitted to the service center (client) 2 through the network 21.
2 and, conversely, the data of the service center (client) 22 is sent to the color calibration data unit 19 and the image forming apparatus control unit. When the color calibration is performed after including the image input unit 24, the color calibration data is sent to the image input unit 24.

FIG. 5 is a block diagram showing a state in which an image input unit 24 is added to the block diagram of the present invention shown in FIG.

After the color calibration is performed as in the conventional case described above, or after the color calibration including the image input unit 24 is performed and the color image forming apparatus is color calibrated, the color calibration data unit 19 is executed. The color calibration data is recorded in the.

This color calibration data section 1
The color calibration data No. 9 is recorded on the medium of the color calibration data medium recording unit 23 via the image forming apparatus control unit 13.

The media in the color calibration data media recording unit 23 is carried to the service center (client) 22 by the administrator of the color image forming apparatus or a service man coming from the service center (client) 22.

Analysis and determination of the color calibration data are performed in the service center (client) in accordance with the data recorded on the medium, and various responses are made to the color image forming apparatus. When the color calibration is performed after including the image input unit 24, the color calibration data is sent to the image input unit 24.

FIG. 6 shows an example of a case in which color calibration is performed in the color image forming apparatus 1 in which the toner in the developing device 29 is small, and it is difficult to adjust the color calibration due to a small amount of toner. ing.

As the situation of the color image forming apparatus 1, when the wear is advanced by the color printing operation, the color image forming apparatus 1 informs the control panel 25 that the remaining yellow toner is low on the LCD display 26 as a warning. The display is turned on by the LED display unit 27 which indicates to the user that the color image forming apparatus 1 has issued a warning.

At this time, the color calibration data of the color image forming apparatus 1 is stored, and the data is transferred from the user office 28 of the color image forming apparatus to the service center 3 supporting the color image forming apparatus 1. Go.

If the service center 3 obtains from the color calibration data that it is difficult to perform yellow calibration, and determines that the reason is that the yellow toner is low, the service center 3 provides a sales guide for the yellow developing device. User office 28 of the color image forming apparatus
To be sent to

When the user feels the necessity of purchasing a yellow developing device from the guide, the user places an order for the yellow developing device with the service center 3 and the service center 3 responds to the order with the new yellow developing device. 29 is sold out to the user.

When the user receives a new yellow developing unit 30, the user can load it into the color image forming apparatus 1 and perform color calibration in a color-stable state. One consumable is
There is an advantage that new consumables can be easily obtained before they are completely consumed.

FIG. 7 is a diagram showing a severe example when the color image forming apparatus 1 is used. What is environmentally strict with respect to the color image forming apparatus 1 is that it is used in a state of high temperature and high humidity or used in a state of high temperature and high humidity.

As shown in FIG. 7, the color image forming apparatus 1
However, when placed in an environment close to the outdoors, it becomes hot during the day,
Conversely, the temperature can be low at night, so that the temperature changes greatly and the humidity changes greatly. As described above, even when the temperature and humidity greatly change in the day and night or in the season, the environment is severe for the color image forming apparatus 1.

In an environment that is harsh for the color image forming apparatus 1 as described above, the color image forming apparatus 1 uses the color image forming apparatus 1 with more special settings than the settings that are shipped in a normal state. It can be good.

In such a case, the service center 3 controls the color image forming apparatus 1 to make appropriate settings. Such a case will be described with reference to FIG.

In FIG. 8, when the color image forming apparatus 1 placed in a severe environment prints the pattern page 31 and performs color calibration, the state changes while the color image forming apparatus 1 is on standby. Despite the fact that a long time has not passed, a change occurs in the characteristics for forming a color image, so that it is necessary to perform color calibration.

In such a case, the service center 3 downloads the color calibration data of the color image forming apparatus 1 used by the user, analyzes the color calibration data, and optimizes the color calibration data derived from the color calibration data. The process parameters are sent back to the user of the color image forming apparatus 1. The user downloads new process parameters newly sent from the service center 3 from the computer (computer terminal) 32 to the color image forming apparatus 1 by using dedicated download software in order to replace the process parameters. With the above method, the color image forming apparatus is supported using the color calibration data.

Further, the embodiment described here is:
Although the service center 3 sends the process parameters to the user of the color image forming apparatus 1, this may be a gamma correction table used in the color image forming apparatus 1 for a gamma correction process for gradation correction. Even in the case of this gamma correction table, the user can replace the gamma correction table by performing download using download software.

FIG. 9 is an explanatory diagram showing an example when color calibration is automatically performed by an optical sensor.

As shown in FIG. 9, the color image forming apparatus substantially conforms to the configuration described in the prior art, and has a configuration related to color calibration added. In the color image forming apparatus shown in FIG. 9, the photosensitive belt 3 is charged, exposed, and developed in the same manner as before.
3, a toner image is formed, and the toner image is transferred onto the intermediate transfer body belt 47.

The density of the toner image formed on the intermediate transfer belt 47 is detected by the density sensor 43. With reference to the detected density of the toner image, the control unit of the color image forming apparatus determines what the current color calibration state is, and places the color image forming apparatus in the color calibration state. To determine what process parameters to set.

At the time of the color calibration operation, the color image forming apparatus does not feed the paper 34, and the toner image on the intermediate transfer member upper belt 47 is directly cleaned by the intermediate transfer member cleaner 48. I do. The color image forming apparatus sequentially performs this operation for black, cyan, magenta, and yellow, and performs color calibration for each of the four colors.

FIG. 10 is a diagram schematically showing the configuration of density sensor 43 shown in FIG. Here, the density sensor 43 will be described in order to describe the method of density detection.

The density sensor used in the color image forming apparatus is a reflection type density sensor. As shown in FIG. 10, a density sensor light emitting section 44 composed of an LED and irradiating light and a pin photodiode to receive reflected light. And a density sensor light receiving section 45.

As shown in FIG. 10, light emitted from the light emitting section 44 strikes the intermediate transfer belt 47 and is reflected.
The light is received by the light receiving section 45. At this time, if toner adheres to the intermediate transfer belt 47, light scattering occurs due to the toner, so that the amount of directly reflected light decreases. As the amount of toner increases, in other words, the higher the density, the more light is scattered and the amount of reflected light decreases.

However, the light amount of the reflected light read by the density sensor 43 in this manner is determined by the light amount on the intermediate transfer belt 47 as the sensitivity of the sensor. Can not handle. Therefore, in order to handle it as data, it is necessary to convert the amount of reflected light into a density value when actually printed on paper.

In this conversion processing, the measured values of each color of black, cyan, magenta, and yellow read by the reflection type density sensor are used to obtain the density values on the paper of each color by using the respective conversion tables which are prepared in advance. be able to.

The conversion table is created by an experimental method. That is, first, a color image is formed by a color image forming apparatus at a known gradation value in advance, and the density is measured by a density sensor.

At this time, a sheet is fed, an image having a known gradation value is transferred to the sheet, and the image is fixed. The density value of the image fixed on the paper is measured using a general-purpose densitometer.

The reading value measured by the density sensor is compared with the value measured by a general-purpose general-purpose densitometer, and the values are tabulated. This operation is performed for all the gradation values, and all the conversion tables are completed. Through the above-described creation process, a conversion table in which the input is the measurement value of the density sensor and the output is the density value on paper is completed.

As described above, the density of an image on a sheet can be obtained by measuring the amount of reflected light detected by the density sensor 47.

FIG. 11 shows an example of an image pattern 50 for automatic color calibration which forms an image on the intermediate transfer belt 47 when the color image forming apparatus automatically performs color calibration.

The image pattern 50 for automatic color calibration is composed of a plurality of patterns of a single color having different developing bias voltage values stepwise in the sub-scanning direction. Because of the change, the density value differs and is detected by the density sensor. The control unit of the color image forming apparatus detects the density at this time, and obtains an optimum developing bias value while comparing the density at the time of color calibration with a prescribed value. By performing this for black, cyan, magenta, and yellow of each color, color calibration can be automatically performed.

FIG. 12 illustrates the exchange between the user / color image forming apparatus side and the maker / service company / client side of the present invention.

The user / color image forming apparatus periodically performs color calibration when using the color image forming apparatus (step S101). In a form proceeding simultaneously with step S101, the maker, service company, and client periodically take in the color calibration data via the network (Internet) (step S102) and analyze the color calibration data. Thereby, process data more suitable for the environment in which the color image forming apparatus is used is created, and the process data is sent to the user via the (Internet).

The user / color image forming apparatus downloads the transmitted process data to the color image forming apparatus by its own judgment (step S103). In this state, the color image forming apparatus continues to be used as it is, and the maker, the service company, and the client periodically acquire the color calibration data. Since the calibration becomes difficult to perform, it can be detected that the remaining life of the consumable is short.

At this time, the maker / service company / client sends a consumable purchase guide to the user / color image forming apparatus (step S104). After receiving the consumables purchase guide, the user / color image forming apparatus orders the consumables when it is considered necessary (step S105).

The maker / service company / client that has received the order of the consumable supplies sends the ordered consumable through the home delivery service (step S106), and the user / color image forming apparatus performs settlement (step S10).
7).

During the purchase and sale of color calibration data and consumables via the network (Internet), the sales of consumables are performed in step S8 according to the frequency and frequency of color calibration of the color image forming apparatus. To increase the discount rate (Step S
108).

As a result, it is recommended that the user who uses the color image forming apparatus regularly execute the color calibration, so that a stable output of the color image to be printed out by the color image forming apparatus can be further ensured. Thus, a color image forming apparatus capable of further realizing color management can be obtained.

[0192]

As described above, according to the present invention, a maker that accumulates data relating to color calibration of a color image forming apparatus and provides the data via a network (Internet). By analyzing the color calibration data by the service company / client, an effective effect that various added values can be added to the color image forming apparatus can be obtained.

Further, in the present invention, by performing color calibration even for a user who is a user, there is obtained an advantageous effect that many advantages such as stable color management and inexpensive purchase of consumables can be obtained. Can be

[Brief description of the drawings]

FIG. 1 is an explanatory diagram regarding exchange of color calibration data according to an embodiment of the present invention;

FIG. 2 is a block diagram showing a connection state between a color calibration data unit and a network according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a state in which color calibration data moves using a medium for color calibration data according to an embodiment of the present invention;

FIG. 4 is a block diagram showing a connection state between a color calibration data unit and a network including an image input unit according to the embodiment of the present invention;

FIG. 5 is a block diagram showing a state in which color calibration data moves using a medium for color calibration data according to an embodiment of the present invention, including an image input unit;

FIG. 6 is a diagram illustrating an example of a case where it is difficult to perform color calibration when the amount of toner remaining in the developing device is small according to the embodiment of the present invention;

FIG. 7 illustrates an example of a severe environment when the color image forming apparatus according to the embodiment of the present invention is used.

FIG. 8 is a diagram showing an example of a case where process data is updated according to an environment according to an embodiment of the present invention;

FIG. 9 is a configuration diagram when color calibration is automatically performed by a density sensor according to an embodiment of the present invention.

FIG. 10 is a schematic diagram of a configuration of a density sensor according to an embodiment of the present invention.

FIG. 11 is a diagram showing an example of an image pattern used when performing color calibration automatically according to an embodiment of the present invention.

FIG. 12 is an explanatory diagram showing an exchange between a color image forming apparatus side and a maker / service company / client side for a user according to an embodiment of the present invention;

FIG. 13 is a diagram illustrating an embodiment of a conventional color image forming apparatus.

FIG. 14 is a block diagram illustrating a relationship between each unit in a conventional color image forming apparatus and a control unit of the color image forming apparatus.

FIG. 15 is a conceptual diagram of a table data configuration in a conventional color image forming apparatus.

FIG. 16 is a diagram of a pattern page for color calibration in a conventional color image forming apparatus.

FIG. 17 is a conventional color calibration scheme.

[Explanation of symbols]

1 Color Image Forming Apparatus 13 Image Forming Layer Device Control Unit (Control Unit) 19 Color Calibration Data Unit (Calibration Data Storage Unit) 20 Network Connection Unit (Network Connection Unit) 23 Color Calibration Data Media Recording Unit (Recording Medium) 24 image input unit (image input means) 32 computer (computer terminal)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int. Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03G 21/00 396 G03G 21/00 396 510 510 H04N 1/00 106 H04N 1/00 106B (72) Inventor Hironori Yamazaki 1006 Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.F-term (reference) AD16 BB34 5C062 AA05 AA25 AA29 AB20 AB22 AB23 AB40 AB42 AC04 AC05 AC61 BA07 BD06

Claims (24)

[Claims] 1. A color image forming apparatus that prints out a color image, a network connection unit that connects the color image forming apparatus to a network, a control unit that performs color calibration, and a calibration of the color calibration adjustment result. Calibration data storage means for storing data; and transmission means for transmitting the calibration data stored in the calibration data storage means to a computer terminal via the network means. Color image forming apparatus. 2. A color image forming apparatus for printing and outputting a color image, a control unit for performing color calibration, a calibration data storage unit for storing calibration data of an adjustment result by the color calibration, and the calibration A removable recording medium for recording the calibration data stored in the data storage means, and managing a color calibration execution status based on the calibration data recorded on the recording medium. Color image forming apparatus. 3. A color image forming apparatus having a color image input means and a printing means for printing and outputting a color image, wherein: a network connecting means for connecting the color image forming apparatus to a network; A control unit that performs color calibration based on the input color calibration data; a calibration data storage unit that stores calibration data of an adjustment result obtained by the color calibration; and a calibration data storage unit that stores the calibration data. Transmitting means for transmitting the adjusted calibration data to the computer terminal connected to the network via the network connection means via the network connection means. Forming equipment. 4. A color image forming apparatus having a color image input means and a printing means for printing and outputting a color image, wherein control for performing color calibration based on color calibration data input from the color image input means is provided. Means, calibration data storage means for storing calibration data of an adjustment result by the color calibration, and a removable recording medium for recording the adjusted calibration data stored in the calibration data storage means. A color image forming apparatus comprising: 5. An image forming and outputting color pattern used for performing color calibration, wherein the color pattern is composed of at least four colors including cyan, magenta, yellow, and black, and the color patterns have different densities. Color calibration characterized by using a plurality of gradation change patterns and adjusting the density adjustment in the color calibration by changing at least one of a voltage applied to a toner and a voltage applied to a photoconductor. Method. 6. An image forming and outputting color pattern for performing color calibration, wherein said color pattern is composed of at least four colors including cyan, magenta, yellow and black, and said color pattern is different in density. A plurality of gradation change patterns, wherein the density adjustment in the color calibration is performed by changing a gamma correction process for correcting the gradation. 7. The input color calibration data has information necessary for gamma correction processing for correcting gradation, and the density adjustment at the time of calibration is performed by changing the gamma correction processing. Color calibration method. 8. When color calibration is performed, a color pattern is printed out, and the inside of the color pattern is controlled so that a uniform density value is formed in an image, and the color pattern is printed on one sheet of paper. A color calibration method comprising a single or a plurality of color calibrations, wherein the density adjustment in the color calibration is performed by changing a gamma correction process for correcting a gradation. 9. When color calibration is performed, a color pattern is image-formed and output, and the color pattern is composed of at least four colors including cyan, magenta, yellow, and black, and the color pattern is of a color density. Using a plurality of different gradation change patterns, the density adjustment in the color calibration is performed by changing and adjusting the voltage applied to the paper transfer roller when performing the paper transfer, or the current value flowing through the transfer roller. A color calibration method characterized by the following. 10. When performing color calibration,
A color pattern is printed out and controlled so that a uniform density value is formed in the pattern frame of the color pattern, and the color pattern is constituted by one or a plurality of sheets on one sheet. A color calibration method in which the density adjustment in the calibration is performed by changing and adjusting a voltage applied to a sheet transfer roller or a current value flowing through the transfer roller when performing sheet transfer. 11. When performing color calibration,
Printing out a color pattern, controlling so that an image of a uniform density value is formed in the pattern frame of the color pattern, wherein the color pattern is constituted by one or a plurality of sheets of paper, A color calibration method characterized in that the density adjustment in color calibration is performed by changing at least one of a voltage applied to a toner and a voltage applied to a photoconductor. 12. When performing color calibration,
A color pattern is printed out, and a control is performed such that a uniform density value is formed in the pattern frame of the color pattern. The color pattern is formed by one or a plurality of sheets on one sheet. A color calibration method, wherein the density adjustment in calibration is performed by changing a gamma correction process for correcting gradation. 13. When performing color calibration,
The color pattern is printed out and controlled so that a uniform density value is formed in the pattern frame of the color pattern, and the color pattern is constituted by one or a plurality of sheets on one sheet. A color calibration method, wherein the density adjustment in the color calibration is performed by changing and adjusting a voltage applied to a paper transfer roller or a current value flowing through the transfer roller when performing paper transfer. 14. A color pattern is formed and output when performing color calibration. The color pattern is composed of at least four colors including cyan, magenta, yellow, and black, and the color patterns have different densities. Density adjustment is performed by controlling a plurality of gradation change patterns and adjusting the density in the color calibration by changing and adjusting the voltage applied to the paper transfer roller when transferring the paper or the current value flowing through the transfer roller. A color calibration method. 15. A reference color pattern card prepared as a separate sheet in advance, which is used as a reference when performing color calibration, wherein a print result of the output color pattern is used as the separate sheet when performing the color calibration. A color calibration method comprising comparing the density with a prepared reference color pattern card and adjusting the density of each color. 16. When performing color calibration,
A color calibration method comprising: measuring the density of a print result of an output color pattern; displaying the density measurement result on a display unit; and adjusting the density of each color based on the display result. 17. When performing color calibration,
A color pattern is printed out, and a control is performed such that a uniform density value is formed in the pattern frame of the color pattern. A color calibration method, wherein the density adjustment in calibration is performed by changing the value of a gamma correction table for correcting gradation. 18. Color calibration data storage means provided in a color image forming apparatus, or color calibration data relating to an adjustment result by color calibration stored in a computer terminal connected to a network is received via the network. A color calibration method comprising: judging a use state of the color image forming apparatus; and supplying control data corresponding to the use state to the color image forming apparatus based on the judgment result. 19. A recording medium storing calibration data of an adjustment result by color calibration is collected, a use condition of the color image forming apparatus is determined from the color calibration data, and the color image is determined based on the determination result. A color calibration method, comprising supplying control data according to a use condition of the forming apparatus to the color image forming apparatus. 20. A state of use of a color image forming apparatus is determined from the adjusted color calibration data, and control data according to the state of use of the color image forming apparatus is supplied via the network based on the result of the determination. A color calibration method. 21. A recording medium storing calibration data as a result of adjustment by color calibration is collected, a use condition of the color image forming apparatus is determined from the color calibration data, and the color image forming apparatus is determined based on the determination result. A color calibration method, comprising supplying control data of the color image forming apparatus according to a use state of the image forming apparatus. 22. Color calibration data stored in a color image forming apparatus or a computer terminal connected to a network is received via a network, and the color image forming apparatus is received based on the received color calibration data. A usage order of the consumables constituting the color image forming apparatus is determined in accordance with the use status determination result. 23. A removable recording medium attached to the color image forming apparatus which stores calibration data as a result of the adjustment by the color calibration,
A use condition of the color image forming apparatus is determined based on the color calibration data recorded on the recording medium, and a selling price of a consumable of the color image forming device is determined according to a result of the use condition determination. A consumables ordering method characterized by the following. 24. The consumable supply method according to claim 22, wherein the usage status of the color image forming apparatus is the number of times the user has performed color calibration on the color image forming apparatus. .