Color management method, color management device, and program

Abstract

For the reading unit used for color management, the operator can consciously set operating modes in which the ratio of data read by the colorimeter and the scanner differs. [Solution] The color management device performs color management based on data read from the paper by a reading unit installed on the transport path of the paper printed by the image forming unit. The reading unit comprises a colorimeter and a scanner. The first operating mode is in which the colorimeter moves by a first width in the paper width direction and reads all or some of the patches among a plurality of patches arranged in the paper width direction. The second operating mode is in which the colorimeter stops or moves by a second width smaller than the first width in the paper width direction and the scanner reads all or some of the patches among a plurality of patches arranged in the paper width direction. When the color management device receives a setting for the operating mode, it performs color management based on the data read in the set operating mode.

Description

[Technical Field]

[0001] This invention relates to a color management method, a color management device, and a program. [Background technology]

[0002] Some image forming machines use a reader (in-line reader) installed on the paper transport path to read printed charts and perform color management. In such image forming machines, a series of processes such as chart printing, chart color measurement, and color management based on the color measurement data can be automated. For example, a user can perform a series of processes by performing predetermined operations. Therefore, even operators with little knowledge or experience in tasks such as color verification and color correction, commonly known as "color matching," can perform color management in the image forming machine.

[0003] Patent Document 1 describes a colorimeter control device that includes both an in-line reading device (such as a line-type CCD sensor) and an optical colorimeter that can move in the paper width direction (CD direction) perpendicular to the paper transport direction. This colorimeter control device performs color measurement using the colorimeter when there is a color variation exceeding a predetermined value in the scanner reading. According to this technology, if the color variation in the scanner reading is below the predetermined value, color measurement by the colorimeter is not performed, thus suppressing a decrease in productivity. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2024-85279 [Overview of the project] [Problems that the invention aims to solve]

[0005] However, with a scanner, the colorimetric value (L) is calculated from the scanned data (RGB values). * a * b *To calculate values such as colorimetric values and XYZ values, the accuracy of the colorimetric values is low. That is, the scanner's read data itself contains variable elements. In other words, even if there is no color variation in the scanner's reading, the actual color may vary. For example, in colorimetry by a scanner, since multiple patches are measured together, the read data (RGB values) may vary due to the influence of reflected light from adjacent patches, etc., and the accuracy may be significantly reduced. In the technology described in Patent Document 1, there was a problem that when it was determined that there was no color variation in the scanner's reading and there was no need for colorimetry by a colorimeter, color matching might be performed based on incorrect read data.

[0006] The present invention has been made in view of the above problems in the prior art, and an object thereof is to enable an operator to consciously set operation modes in which the ratios of data read by a colorimeter and a scanner are different for a reading unit used for color management.

Means for Solving the Problems

[0007] In order to solve the above problems, the invention according to claim 1 is a color management method executed by a color management device that performs color management based on read data of a sheet by a reading unit installed in a conveyance path of a sheet printed by an image forming unit. The reading unit includes a colorimeter and a scanner. When the color management device receives a setting of a first operation mode in which the colorimeter moves in a first width direction in the sheet width direction and reads all or some of a plurality of patches arranged in the sheet width direction, the color management device performs color management based on the data read in the first operation mode. When the colorimeter stops in the sheet width direction or moves in a second width direction smaller than the first width and the scanner reads all or some of a plurality of patches arranged in the sheet width direction, the color management device receives a setting of a second operation mode and performs color management based on the data read in the second operation mode.

[0008] The invention according to claim 2 is the color management method according to claim 1, wherein the color management device performs color management based on a color management data set, and the color management device receives the setting of the color management data set, obtains the setting of the operation mode indicating either the first operation mode or the second operation mode corresponding to the set color management data set, and performs color management based on the data read in the operation mode indicated by the obtained operation mode setting.

[0009] The invention according to claim 3 is the color management method according to claim 2, wherein the color management data set includes the setting of the operation mode, and the color management device performs color management based on the data read in the operation mode indicated by the operation mode setting included in the set color management data set.

[0010] The invention according to claim 4 is the color management method according to claim 1, wherein in the first operation mode, the colorimeter reads some of the patches arranged in the paper width direction, and the scanner reads the other patches other than the some patches read by the colorimeter among the patches arranged in the paper width direction.

[0011] The invention according to claim 5 is the color management method according to claim 1, wherein in the second operation mode, the colorimeter stops, and the scanner reads all or some of the patches arranged in the paper width direction.

[0012] The invention according to claim 6 is the color management method according to claim 1, wherein in the second operation mode, the scanner reads some of the patches arranged in the paper width direction, and the colorimeter reads the other patches other than the some patches read by the scanner among the patches arranged in the paper width direction.

[0013] The invention according to claim 7 is the color management method according to claim 1, wherein in the second operation mode, the data read by the scanner is corrected based on the data read by the colorimeter.

[0014] The invention described in claim 8 is the color management method described in claim 1, wherein the color management is at least one of color verification, creation of a color profile, and color correction.

[0015] The invention described in claim 9 is a color management method described in claim 1, wherein when the color management device receives a setting of an operating mode indicating either the first operating mode or the second operating mode, it presents a processing time for the color management corresponding to the set operating mode.

[0016] The invention described in claim 10 is a color management method described in claim 9, wherein the color management device, upon receiving the setting of the first operating mode, presents a processing time related to the color management.

[0017] The invention described in claim 11 is a color management method according to claim 9, wherein the image printed by the image forming unit is a patch for color management, and the color management device determines the processing time for the color management according to the number of patches to be read and / or the arrangement of the patches.

[0018] The invention described in claim 12 is a color management method according to claim 1, wherein the color management device performs color management based on data read in the first operating mode if the color management performed based on data read in the second operating mode fails.

[0019] The invention described in claim 13 is a color management method described in claim 1, wherein the color management device performs color management based on the data read in the first operating mode, and then, when a predetermined number of prints are performed by the image forming unit, performs color management based on the data read in the second operating mode.

[0020] The invention described in claim 14 is a color management method described in claim 3, wherein the color management dataset includes the settings of a chart used in the color management, and the color management device, in registering the color management dataset, automatically sets an operating mode corresponding to the set chart according to the chart settings.

[0021] The invention described in claim 15 is a color management method described in claim 3, wherein the color management dataset includes setting a color management standard, and the color management device, in registering the color management dataset, automatically sets an operating mode corresponding to the set color management standard according to the setting of the color management standard.

[0022] The invention described in claim 16 relates to the color management method described in claim 3, wherein the color management device is capable of color management for an image forming unit other than the image forming unit, the reading unit installed on the transport path of paper printed by the other image forming unit does not have the first operating mode, and the color management device prohibits the color management dataset, which includes the setting of the first operating mode, from being associated with the other image forming unit.

[0023] The invention described in claim 17 relates to the color management method described in claim 3, wherein the color management device is capable of color management for an image forming unit other than the image forming unit, the reading unit installed on the transport path of paper printed by the other image forming unit does not have the first operating mode, and the color management device automatically changes the operating mode setting included in the color management dataset to the second operating mode when the color management dataset, which includes the setting of the first operating mode, is associated with the other image forming unit.

[0024] The invention described in claim 18 is a color management device comprising a control unit that performs the color management method described in any one of claims 1 to 17.

[0025] The invention described in claim 19 is a program for causing a computer that controls a color management device to execute the color management method described in any one of claims 1 to 17. [Effects of the Invention]

[0026] According to the present invention, the operator can consciously set operating modes in which the ratio of data read by the colorimeter and the scanner differs for the reading unit used for color management. [Brief explanation of the drawing]

[0027] [Figure 1] This is a diagram illustrating the configuration of a color management system in a first embodiment of the present invention. [Figure 2] This is a diagram showing the hardware configuration of an image forming apparatus. [Figure 3] This figure shows the external configuration of an image forming apparatus. [Figure 4] This diagram schematically shows the positional relationship between the inline reading unit and the chart. [Figure 5] This diagram shows the hardware configuration of a PC. [Figure 6] This diagram shows the hardware configuration of the printer controller. [Figure 7] This diagram shows the hardware configuration of the color management device. [Figure 8] This figure shows an example of the data structure of a printer information table. [Figure 9] This figure shows an example of the data structure of a color management dataset table. [Figure 10] This figure shows an example of the data structure of a color management preset table. [Figure 11] This is an example of a chart when Mode A is set. [Figure 12] This is an example of a chart when Mode B is set. [Figure 13] This is an example of a chart when Mode C is set. [Figure 14] This is an example of a chart when Mode D is set. [Figure 15] This is an example of a chart when Mode E is set. [Figure 16] This is a flowchart showing the color management execution process. [Figure 17] This is an example of a screen for selecting a color management dataset. [Figure 18] This is an example of the color measurement settings screen. [Figure 19] This flowchart shows the first additional process in Modification 1 of the first embodiment. [Figure 20] This flowchart shows the second additional processing in a modified example 2 of the first embodiment. [Figure 21] This flowchart shows the data set registration process for the first color management in the second embodiment. [Figure 22] This is an example of a registration screen for a color management dataset. [Figure 23] This flowchart shows the data set registration process for second color management in the third embodiment. [Figure 24] This is a flowchart showing the first color management preset registration process in the fourth embodiment. [Figure 25] This is a flowchart showing the second color management preset registration process in the fifth embodiment. [Modes for carrying out the invention]

[0028] Embodiments of the present invention will be described below with reference to the drawings. The advantages and features provided by the embodiments will be understood from the following detailed description and drawings. However, the scope of the present invention is not limited to the embodiments or illustrations disclosed below.

[0029] [First Embodiment] Figure 1 shows the configuration of the color management system 100 in the first embodiment. The color management system 100 comprises a PC (Personal Computer) 10, a printer controller 20, a plurality of image forming apparatuses 30, and a color management device 50. Each device constituting the color management system 100 is connected via a communication network N such as a LAN (Local Area Network) to enable data communication. The number of each device is not particularly limited. The color management system 100 is used, for example, in a print shop that provides printed materials to customers.

[0030] The PC10 has a printer driver program 121 (see Figure 5) installed. The PC10 issues print commands to the printer controller 20 or the image forming apparatus 30 using the printer driver. Specifically, the PC10 generates print data described in a page description language (PDL) or the like that can be interpreted by the printer controller 20, in response to user operations. Alternatively, the PC10 may issue print commands to the printer controller 20 or the image forming apparatus 30 for data such as PDFs using a specific application, without using the printer driver.

[0031] The printer controller 20 has the printer controller program 221 (see Figure 6) installed. The printer controller 20 receives print data from the PC 10. The printer controller 20 also receives chart data from the color management device 50. The printer controller 20 performs RIP (Raster Image Processing) on ​​the print data or chart data to generate printable image data (raster data). The printer controller 20 also performs image processing such as color conversion and screening on the printable image data. The printer controller 20 transmits the processed image data (raster data) to the image forming apparatus 30. The printer controller 20 may be built into the image forming apparatus 30. Alternatively, the printer controller 20 and the image forming apparatus 30 may be connected via a dedicated line, such as a PCI connection.

[0032] The image forming apparatus 30 forms an image on paper based on raster data (image data in bitmap format) received from the printer controller 20. The paper includes printing paper and various types of film. Paper types include plain paper, fine paper, gloss coated paper, matte coated paper, etc.

[0033] The color management device 50 has a color management application program 521 (see Figure 7) installed for managing the colors of the image forming apparatus 30. The color management device 50 performs color verification, color profile creation, color correction, history management, etc., in the image forming apparatus 30.

[0034] Figure 2 shows the hardware configuration of the image forming apparatus 30. Figure 3 shows the external configuration of the image forming apparatus 30. The image forming apparatus 30 is capable of image formation using four toner colors: cyan (C), magenta (M), yellow (Y), and black (K), as well as a special color toner, white (W).

[0035] The image forming apparatus 30 comprises a CPU (Central Processing Unit) 31, a storage unit 32, a display unit 33, an operation unit 34, a communication unit 35, an image forming unit 36, a document reading unit 37, a paper feeding unit 38, and an inline reading unit 40.

[0036] The CPU 31 comprehensively controls the processing operations of each part of the image forming apparatus 30. The CPU 31 reads various processing programs stored in the memory unit 32 and performs various processing operations in cooperation with those programs.

[0037] The storage unit 32 includes an HDD (Hard Disk Drive), an SSD (Solid State Drive), non-volatile memory, etc. The storage unit 32 stores various processing programs, data related to various processing, etc. For example, the storage unit 32 stores paper information related to the image forming apparatus 30. The storage unit 32 also stores target profiles, printer profiles, scanner profiles, etc.

[0038] The display unit 33 is composed of an LCD (Liquid Crystal Display). The display unit 33 displays various screens according to the instructions of the display signals input from the CPU 31. The control unit 34 receives various operations from the user and outputs operation signals based on those operations to the CPU 31. The control unit 34 includes a touchscreen, a numeric keypad, a start button, a stop button, and the like.

[0039] The communication unit 35 performs data communication with external devices. For example, the communication unit 35 receives raster data from the printer controller 20. The communication unit 35 receives instructions to print charts, instructions to read charts, etc., from the color management device 50. The communication unit 35 transmits the data read by the inline reading unit 40 to the color management device 50.

[0040] The image forming unit 36 ​​forms an image on paper using an electrophotographic method. The image forming unit 36 ​​includes photoreceptor drums 361C, 361M, 361Y, 361K, and 361W corresponding to cyan (C), magenta (M), yellow (Y), black (K), and white (W), an intermediate transfer belt 362, a fixing unit 363, an inversion unit 364, etc. For example, the image forming unit 36 ​​uniformly charges the photoreceptor drum 361C corresponding to cyan, and then scans and exposes the photoreceptor drum 361C with a laser beam based on cyan image data to form an electrostatic latent image. The image forming unit 36 ​​then deposits cyan toner onto the electrostatic latent image on the photoreceptor drum 361C and develops it. The processing for other colors is the same as the processing for cyan. The image forming unit 36 ​​sequentially transfers the toner images of each color formed on the photoreceptor drums 361C, 361M, 361Y, 361K, and 361W corresponding to each color onto the intermediate transfer belt 362 (primary transfer). That is, a color toner image is formed on the intermediate transfer belt 362 by superimposing the toner images of multiple colors. The image forming unit 36 ​​then transfers the color toner image on the intermediate transfer belt 362 onto the paper all at once (secondary transfer). The fixing unit 363 fixes the color toner image to the paper by heating and pressurizing. When image formation is performed on both sides of the paper, the inversion unit 364 inverts the paper with the image fixed on the front side and transports it back to the image forming unit 36. The CPU 31 controls the image forming unit 36 ​​to form the image based on the raster data received from the printer controller 20. Figure 3 shows an example of an image forming unit 36 ​​that forms an image using five toners: cyan, magenta, yellow, black, and white (CMYKW). Alternatively, the toner used in the image forming unit 36 ​​does not have to include white, and may also include spot colors other than white.

[0041] The document reading unit 37 reads the paper, color sample, etc., placed on the document glass and generates reading data having pixel values ​​for each color: red (R), green (G), and blue (B).

[0042] The paper feeding unit 38 is equipped with multiple paper trays and supplies the paper stored in each paper tray to the image forming unit 36.

[0043] The inline reading unit 40 is located in the transport path downstream of the image forming unit 36 ​​in the paper transport direction. The inline reading unit 40 reads the image formed on the paper and generates reading data. The inline reading unit 40 comprises a colorimeter 41 and a scanner 42.

[0044] Figure 4 schematically shows the positional relationship between the inline reading unit 40 and the chart 200. As the chart 200 is transported, the inline reading unit 40 becomes capable of reading different positions on the chart 200 in the paper transport direction.

[0045] The colorimeter 41 is a spectrophotometer, and measures the absolute value of color (L). * a * b * The colorimeter accurately measures the color (values, XYZ values, etc.). The colorimeter 41 detects the spectral reflectance for each wavelength in an image formed on paper (chart 200) and measures the color of the image. There are two modes of reading by the colorimeter 41: spot measurement mode and line measurement mode.

[0046] Spot color measurement mode is a mode in which each patch is measured individually, one at a time. In terms of a camera, spot color measurement mode is like pressing the shutter button once for each patch. In other words, in spot color measurement mode, the colorimeter 41 reads a portion of the area in the paper width direction (main scanning direction) perpendicular to the paper transport direction in a single reading (measurement).

[0047] Line colorimetric mode is a mode in which time-series data of colorimetric values ​​is acquired by moving the colorimeter 41 and reading the values ​​sequentially. Line colorimetric mode is like moving a camera while keeping the shutter open. In line colorimetric mode, the colorimeter 41 may output the average value of the colorimetric values ​​obtained within the same patch as the reading data corresponding to that patch.

[0048] The colorimeter 41 is configured to be movable in the paper width direction. By moving in the paper width direction, the colorimeter 41 can read the entire area in the paper width direction. In other words, if the colorimeter 41 is not moved, it can only read a partial area in the paper width direction. Also, the colorimeter 41 is used for the correction (calibration) of the scanner 42.

[0049] The scanner 42 is fixed and can read the entire area in the paper width direction in one reading. The scanner 42 reads the conveyed paper (chart 200) and generates reading data having pixel values for each of the colors red (R), green (G), and blue (B). The scanner 42 is, for example, a line-type CCD sensor. In the reading by the scanner 42, the CPU 31 calculates colorimetric values (L * a * b * values, XYZ values, etc.).

[0050] As operation modes of the in-line reading unit 40, there are a first operation mode and a second operation mode. The first operation mode is an operation mode in which the colorimeter 41 moves a first width in the paper width direction and reads all or some of a plurality of patches arranged in the paper width direction. Since the first operation mode mainly uses the data read by the colorimeter 41, it is called the "accuracy priority mode". The accuracy priority mode has higher accuracy of colorimetric values but a slower reading speed compared to the second operation mode. In the accuracy priority mode, for example, by reading about 1700 patches printed on the entire paper surface with the colorimeter 41 and performing color adjustment, high-precision color management becomes possible.

[0051] The second operation mode is an operation mode in which the colorimeter 41 stops or moves a second width smaller than the first width in the paper width direction, and the scanner 42 reads all or some of a plurality of patches arranged in the paper width direction. Since the second operation mode mainly uses the data read by the scanner 42, it is called the "speed priority mode". The speed priority mode has a faster reading speed but lower accuracy of colorimetric values compared to the accuracy priority mode.

[0052] Note that "accuracy priority mode" and "speed priority mode" are relative terms. Depending on the operating mode being compared, the same operating mode may be either accuracy priority mode or speed priority mode.

[0053] Figure 5 shows the hardware configuration of PC10. PC10 comprises a CPU 11, a storage unit 12, a display unit 13, an operation unit 14, and a communication unit 15. The CPU 11 comprehensively controls the processing operations of each part of the PC 10. The CPU 11 reads various processing programs stored in the memory unit 12 and performs various processes in cooperation with those programs. The storage unit 12 includes an HDD, SSD, non-volatile memory, etc. The storage unit 12 stores various processing programs such as the printer driver program 121, data related to various processing, etc.

[0054] The display unit 13 is composed of an LCD. The display unit 13 displays various screens according to the instructions of the display signals input from the CPU 11. The control unit 14 includes a keyboard and a pointing device such as a mouse. The control unit 14 outputs operation signals input by key operations on the keyboard and operations on the pointing device to the CPU 11. The communication unit 15 performs data communication with external devices.

[0055] Figure 6 shows the hardware configuration of the printer controller 20. The printer controller 20 comprises a CPU 21, a storage unit 22, a display unit 23, an operation unit 24, and a communication unit 25. Since each part of the printer controller 20 is the same as each part of the PC 10, only the differences from the PC 10 will be explained. The storage unit 22 stores the printer controller program 221. The storage unit 22 also stores the target profile, printer profile, and other related information.

[0056] Figure 7 shows the hardware configuration of the color management device 50. The color management device 50 comprises a CPU 51, a storage unit 52, a display unit 53, an operation unit 54, and a communication unit 55. Since each part of the color management device 50 is the same as each part of the PC 10, the differences from the PC 10 will be explained.

[0057] The memory unit 52 stores a color management application program 521. The color management application is realized through the cooperation of the CPU 51 and the color management application program 521. The color management application provides a user interface for issuing execution instructions for color management of the image forming apparatus 30, checking color verification results, calculating correction values, etc. Note that the method of using the color management application is not limited to when the program is installed locally. Alternatively, the color management application on the cloud may be used as a SaaS (Software as a Service) type service, accessed from the color management device 50 via a browser.

[0058] The memory unit 52 stores the printer information table T1, the color management dataset table T2, and the color management preset table T3.

[0059] The printer information table T1 is a table for managing printer information for multiple image forming apparatuses 30 within the color management system 100. Figure 8 shows an example of the data structure of the printer information table T1. The printer information table T1 associates the following information with each image forming apparatus 30: printer name, model name, serial number, IP address, main unit administrator password, status, installation location, communication settings, authentication settings, paper information, etc.

[0060] "Printer name" is the name of the image forming apparatus 30 (printer). "Model name" refers to the model name of the image forming apparatus 30. The "serial number" is the serial number of the image forming apparatus 30. The "IP address" is the IP address of the image forming apparatus 30. The "IP address" may also include the IP address of the image forming engine (image forming apparatus 30) and the IP address of the printer controller 20. The "main unit administrator password" is the administrator password for the image forming apparatus 30. "Status" is information indicating the state of the image forming apparatus 30. The "Status" can be either online or offline. "Installation location" refers to the installation location of the image forming apparatus 30. "Communication settings" is information indicating the communication settings of the image forming apparatus 30. "Communication settings" include SSL (ON / OFF), SSL port, and RAW printing port. "Authentication settings" is information indicating the authentication settings of the image forming apparatus 30. "Authentication settings" include authentication (ON / OFF) and public user (ON / OFF). "Paper information" refers to information about the paper used in the image forming apparatus 30. "Paper information" includes information such as the type of paper and which paper tray the paper is in. "Paper information" includes the paper tray, paper profile, paper size, paper feeding direction, paper type, paper weight, paper color, punch holes, etc.

[0061] The color management dataset table T2 is a table for managing the color management dataset (target configuration) used by the color management device 50 (color management application). The color management dataset includes settings for the colorimeter used for color management, settings for the chart to be used, tolerance values ​​for color verification, settings for color correction, settings for the operating mode, etc. The color management dataset includes various settings necessary for color measurement processing.

[0062] Figure 9 shows an example of the data structure of the color management dataset table T2. The color management dataset table T2 associates the color management dataset name, color measurement settings, profile creation settings, color verification settings, and operating mode with each color management dataset.

[0063] "Color management dataset name" is the name of the color management dataset. "Colorimetric settings" are settings related to color measurement. These settings include the colorimeter used, color measurement conditions, and the number of color measurement averages. When obtaining colorimetric values, multiple copies of the wedge or chart are printed to ensure print stability, and the colorimetric values ​​are averaged for each patch. "Number of colorimetric averaging cycles" is the number of wedges or charts printed for this averaging process. "Number of colorimetric averaging cycles" is a value specified by the user.

[0064] "Profile Creation Settings" are settings related to profile creation. These settings include profiling charts, UCR / GCR, and Device Link Profile (DLP) creation settings. A "profiling chart" is a chart used to create a profile (profiling). "UCR (Under Color Removal)" replaces the CMY in the shadow areas with black (K). "GCR (Gray Component Replacement)" replaces the CMY in all tonal areas, from the highlights to the shadows, with black (K). The "DLP creation settings" include RGB-CMYK DLP (RGB source profile, RGB rendering intent) and CMYK-CMYK DLP (target profile, CMYK rendering intent, midtone desaturation, solid color preservation). "Intermediate turbidity removal" is a setting that reproduces a color that was composed of only a single color before color conversion so that it remains composed of only that single color after color conversion. "Solid Color Retention" is a setting that reproduces the solid color areas from before the color conversion as solid colors after the color conversion.

[0065] "Color Verification Settings" refers to the settings related to color verification. "Color Verification Settings" include the color verification standard name, color verification wedge, calculation settings, judgment items, and tolerance values. The "Calculation Settings" include consideration of the underlying structure (absolute / relative) and the dE calculation formula (dE00, dEab, etc.). "Judgment criteria and tolerance values" are the judgment criteria and tolerance values ​​defined in the standard. These criteria and tolerance values ​​can be set strictly or loosely depending on the user's operation.

[0066] The "operating mode" refers to the operating mode for color management (particularly chart reading) of the image forming apparatus 30.

[0067] The color management device 50 combines the image forming apparatus 30, the paper settings for printing the chart, and the color management data set to perform a series of color management operations. The series of color management operations involves printing a specified chart on specified paper, reading the chart in a specified operating mode using a specified reader, performing color verification, and creating a color adjustment profile from the results. Various settings related to color management are registered as color management presets.

[0068] A color management preset is information that associates a color management dataset with printer information and paper print settings. Color management preset table T3 is a table for managing color management presets. Figure 10 shows an example of the data structure of the color management preset table T3. Each color management preset in the color management preset table T3 is associated with the color management preset name, color management dataset name, printer name, paper print settings, and profile creation name.

[0069] "Color Management Preset Name" is the name of the color management preset. The "Color Management Dataset Name" is information used to link the "Color Management Dataset" that makes up the color management preset. Details of the "Color Management Dataset" are obtained from the Color Management Dataset Table T2 based on the "Color Management Dataset Name". The "Printer Name" is information used to link the printer to the "Printer Information" that makes up the color management preset. The details of the "Printer Information" are obtained from the printer information table T1 based on the "Printer Name".

[0070] "Paper print settings information" includes paper information for the paper to be color-managed, and print settings. "Paper information" includes the paper tray, paper profile, paper size, paper feeding direction, paper type, paper weight, paper color, and punch holes. "Print settings" include screen settings, number of copies (number of color averaging cycles), and the profile applied during color verification (DLP / target profile), etc.

[0071] The "Name setting when creating a profile" includes the default names for each profile (printer profile, CMYK-CMYK DLP, RGB-CMYK DLP).

[0072] The CPU 51 acquires reading data from the image forming apparatus 30 via the communication unit 55, specifically from the inline reading unit 40. If the reading data is from the colorimeter 41, then L * a * b * If it is data, and if it is data read by scanner 42, then RGB data and / or L * a * b * This is data.

[0073] The CPU 51 (control unit) performs color management of the image forming apparatus 30 based on the data read from the paper by the inline reading unit 40 (reading unit) installed on the transport path of the paper printed by the image forming unit 36 ​​of the image forming apparatus 30. Color management consists of at least one of the following: color verification, color profile creation, and color correction. Color verification is a function that compares the actual reading results of a chart printed by the image forming apparatus 30 with the target value to verify whether or not the color verification criteria are met. The color profile creation function is a function that creates a profile that shows the color characteristics of the image forming apparatus 30. Color correction is a function that corrects the colors printed by the image forming apparatus 30.

[0074] When CPU51 accepts the setting for accuracy priority mode (first operating mode), it performs color management based on the data read in that accuracy priority mode. When CPU51 accepts the setting for speed priority mode (second operating mode), it performs color management based on the data read in that speed priority mode.

[0075] As an example of accuracy priority mode, in mode A, the colorimeter 41 reads all of the multiple patches arranged in the paper width direction. Alternatively, there may be patches among the multiple patches arranged in the paper width direction that the colorimeter 41 does not read.

[0076] Figure 11 shows an example of chart 201 when mode A is set. In mode A, the CPU 51 of the color management device 50 performs color management using only the reading data from the colorimeter 41. The CPU 31 of the image forming apparatus 30 performs color measurement while moving the colorimeter 41 in the paper width direction so that the colorimeter 41 reads all patches on chart 201. The colorimeter 41 reads area 201A of chart 201. For example, the width W1 shown in Figure 11 corresponds to the "first width" to which the colorimeter 41 moves in the paper width direction in mode A. Note that in Figure 11, width W1 is illustrated assuming that the colorimeter 41 reads the central position of the patch in the paper width direction. The arrow 201C in Figure 11 indicates the order in which the colorimeter 41 reads the patches.

[0077] As an example of accuracy priority mode, in mode B, the colorimeter 41 reads some of the multiple patches arranged in the paper width direction, and the scanner 42 reads the other patches from the multiple patches arranged in the paper width direction that are not read by the colorimeter 41.

[0078] Figure 12 shows an example of Chart 202 when Mode B is set. In Mode B, the CPU 51 of the color management device 50 performs color management using reading data from both the colorimeter 41 and the scanner 42. The CPU 31 of the image forming apparatus 30 performs color measurement while moving the colorimeter 41 in the paper width direction so that the colorimeter 41 reads the patch in area 202A on the chart 202. For example, the width W2 shown in Figure 12 corresponds to the "first width" in which the colorimeter 41 moves in the paper width direction in mode B. In Figure 12, the width W2 is illustrated assuming that the colorimeter 41 reads the central position of the patch in the paper width direction. The arrow 202C in Figure 12 indicates the order in which the colorimeter 41 reads the patches. The CPU 31 instructs the scanner 42 to read the patch in area 202B on the chart 202. The arrow 202D in Figure 12 indicates the order in which the scanner 42 reads the patches. However, since the scanner 42 reads multiple patches aligned in the paper width direction simultaneously, patches with the same position in the paper transport direction are read at the same time, regardless of whether the arrow 202D overlaps the patch in Figure 12. The same applies to arrows 203D, 204D, and 205D in Figures 13 to 15.

[0079] As an example of a speed-priority mode, in mode C, the scanner 42 reads some of the multiple patches arranged in the paper width direction, and the colorimeter 41 reads the other patches from the multiple patches arranged in the paper width direction that are not read by the scanner 42.

[0080] Figure 13 shows an example of Chart 203 when Mode C is set. In Mode C, the CPU 51 of the color management device 50 performs color management using reading data from both the scanner 42 and the colorimeter 41. The CPU 31 of the image forming apparatus 30 performs color measurement while moving the colorimeter 41 in the paper width direction so that the colorimeter 41 reads the patch in area 203A on the chart 203. For example, the width W3 shown in Figure 13 corresponds to the "second width" to which the colorimeter 41 moves in the paper width direction in mode C. Note that in Figure 13, width W3 is illustrated assuming that the colorimeter 41 reads the central position of the patch in the paper width direction. The width W3 to which the colorimeter 41 moves in the paper width direction in mode C is smaller than the width W1 to which the colorimeter 41 moves in the paper width direction in mode A (see Figure 11). The width W3 to which the colorimeter 41 moves in the paper width direction in mode C is smaller than the width W2 to which the colorimeter 41 moves in the paper width direction in mode B (see Figure 12). The arrow 203C in Figure 13 indicates the order in which the colorimeter 41 reads the patches. The CPU 31 causes the scanner 42 to read the patch in area 203B on chart 203. The arrow 203D in Figure 13 indicates the order in which the scanner 42 reads the patch.

[0081] As an example of a speed-priority mode, in mode D, the colorimeter 41 stops moving in the paper width direction, and the scanner 42 reads all of the multiple patches arranged in the paper width direction. Alternatively, there may be patches among the multiple patches arranged in the paper width direction that the scanner 42 does not read.

[0082] Figure 14 shows an example of chart 204 when mode D is set. In mode D, the CPU 51 of the color management device 50 performs color management using only the data read by the scanner 42. The CPU 31 of the image forming apparatus 30 causes the scanner 42 to read the patches in area 204B on chart 204. The arrow 204D in Figure 14 indicates the order in which the scanner 42 reads the patches.

[0083] Comparing modes A to D regarding the ratio of data read by the colorimeter 41 to data read by the scanner 42, mode A has the highest ratio of data read by the colorimeter 41 among modes A to D. Mode D has the highest ratio of data read by the scanner 42 among modes A to D. Mode B has a higher ratio of data read by the scanner 42 than mode A, and a higher ratio of data read by the colorimeter 41 than modes C and D. Mode C has a higher ratio of data read by the scanner 42 than modes A and B, and a higher ratio of data read by the colorimeter 41 than mode D. Furthermore, Mode A has the highest number of patches read by the colorimeter 41 among Modes A to D. Mode D has the highest number of patches read by the scanner 42 among Modes A to D.

[0084] As an example of a speed-priority mode, in mode E, the CPU 31 (inline reading unit 40) of the image forming apparatus 30 corrects the data read by the scanner 42 based on the data read by the colorimeter 41.

[0085] Figure 15 shows an example of Chart 205 when Mode E is set. In Mode E, the CPU 51 of the color management device 50 performs color management using the reading data of the scanner 42, which has been corrected based on the reading data of the colorimeter 41. The CPU 31 of the image forming apparatus 30 performs color measurement while keeping the colorimeter 41 stopped in the paper width direction so that the colorimeter 41 reads the patch in area 205A on the chart 205. The arrow 205E in Figure 15 indicates the order in which the colorimeter 41 reads the patches to acquire data for scanner correction. The CPU 31 causes the scanner 42 to read the patch in area 205B on the chart 205. The arrow 205D in Figure 15 indicates the order in which the scanner 42 reads the patch.

[0086] Here, we will explain how to correct the reading data of the scanner 42 based on the reading data of the colorimeter 41. The patches read by the scanner 42 include multiple common color patches, which are the same color as the patches read by the colorimeter 41. Patches of the same color are patches formed in the image forming unit 36 ​​with the same CMYK values ​​(or CMYKW values). The CPU 31 of the image forming apparatus 30 processes the L of the common color patch read by the colorimeter 41. * a * b * Value (Measured L) * a * b * Get the value. The CPU 31 uses the scanner profile of the scanner 42 to determine the RGB values ​​of the common color patch read by the scanner 42. * a * b * The value is converted to color, and the estimated L after conversion is obtained. * a * b * Get the value. CPU31 is the measured L in each common color patch. * a * b * Value and Estimated L * a * b * Based on the difference with the value, the scanner profile of scanner 42 is corrected (calibration of scanner 42). The correction of the scanner profile corresponds to the correction of the data read by scanner 42 based on the data read by colorimeter 41. For the data read by scanner 42, CPU 31 uses the corrected scanner profile to L * a * b * The values ​​are converted and then provided to the color management device 50.

[0087] The choice of which mode, A or B, to use as the accuracy priority mode (first operating mode) is pre-stored in the memory unit 52 of the color management device 50 and the memory unit 32 of the image forming apparatus 30. Note that if mode D or mode E is used as the speed priority mode, mode C may also become the accuracy priority mode. The choice of which of modes C, D, or E to use as the speed-priority mode (second operating mode) is stored in advance in the memory unit 52 of the color management device 50 and the memory unit 32 of the image forming apparatus 30. Note that if mode A is used as the accuracy-priority mode, mode B may also become the speed-priority mode.

[0088] In charts 201 to 205 shown in Figures 11 to 15, the size of the patch read by the colorimeter 41 is larger than the size of the patch read by the scanner 42. Alternatively, the patch read by the colorimeter 41 and the patch read by the scanner 42 may be the same size.

[0089] Even if the inline reading unit 40 of the image forming apparatus 30 can be configured to primarily use reading by a colorimeter 41 and primarily use reading by a scanner 42, the following problems can be considered. The operator may switch between using the colorimeter 41 or the scanner 42 for color management, depending on the customer's needs regarding color matching. Specifically, the operator can balance QCD (Quality, Cost, Delivery) by using the colorimeter 41 for customers who require high accuracy in color matching, and the scanner 42 for customers who do not require high accuracy in color matching. Customers who require high accuracy in color matching are those who require a small color difference between the measured color value (reading) and the target color. Customers who do not require high accuracy in color matching are those who have a large tolerance for the color difference between the measured color value (reading) and the target color.

[0090] On the other hand, with advances in image formation technology, the variations in image formation processes are increasing, including printing with spot toners, decorative printing, and printing on special papers. Because the color measurement by scanner 42 measures multiple patches together, the read data (RGB values) can fluctuate due to the influence of reflected light from adjacent patches, which can significantly reduce accuracy.

[0091] In this situation, using scanner 42 would result in color matching being performed on inaccurate colorimetric values ​​(colorimetric values ​​that deviate from the original color), even for customers who do not have high requirements for color matching accuracy. Furthermore, even if the color difference criteria are met numerically, there is a risk that customer quality needs will not be met. Additionally, to meet quality needs, color matching using colorimeter 41 would be required, followed by reprinting, which could result in failing to meet customer cost or delivery time requirements. Thus, there are increasing cases where simply using indicators such as the magnitude of color difference to differentiate between operating modes is no longer sufficient to meet customer needs. Therefore, it is desirable that even operators lacking color matching skills be able to appropriately set the operating mode of the inline reading unit 40 used for color management.

[0092] The CPU 51 of the color management device 50 performs color management based on the color management dataset. CPU51 accepts the configuration of the color management dataset. CPU51 retrieves the operating mode setting corresponding to the configured color management dataset. The operating mode setting indicates either accuracy priority mode (first operating mode) or speed priority mode (second operating mode). CPU51 performs color management based on the data read from the operating mode indicated by the acquired operating mode setting.

[0093] Specifically, CPU51 performs color management based on the data read using the operating mode indicated by the operating mode setting included in the configured color management dataset.

[0094] When the CPU 51 receives a setting for either accuracy-priority mode or speed-priority mode, it displays the processing time for color management corresponding to the set operating mode. The processing time for color management includes not only the time required to read the paper, but also the time required for all or part of the color management. For example, the processing time for color management may include the time required for printing charts and various calculation processes.

[0095] The image printed by the image forming apparatus 30 is a color management patch. CPU51 determines the processing time for color management depending on the number of patches to be read and / or the arrangement of the patches.

[0096] The CPU 51 may display the processing time for color management only if it accepts the setting for accuracy priority mode. In this case, the CPU 51 can allow the user to confirm the processing time for accuracy priority mode, which is expected to take more time.

[0097] (Color verification) Now, let's discuss color verification. The CPU 51 of the color management device 50 instructs the image forming apparatus 30, which is under color management, to print a color verification chart (patch group). The CPU 51 sends a print command for the color verification chart to the printer controller 20 via the communication unit 55. The print command for the color verification chart includes the specification of the color verification chart, the paper type, screen, number of copies, and the profile to be applied during color verification. The CPU 21 of the printer controller 20 performs RIP processing on the chart data. The CPU 21 sends a print command for the color verification chart, including the processed image data, to the image forming apparatus 30, which is under color management, via the communication unit 25. In the image forming apparatus 30, which is under color management, the CPU 31 controls the image forming unit 36 ​​to print the color verification chart.

[0098] Next, the CPU 51 of the color management device 50 instructs the image forming apparatus 30, which is under color management, to read the color verification chart in the set operating mode. The CPU 51 transmits a reading instruction for the color verification chart, including the setting of the operating mode, to the image forming apparatus 30, which is under color management, via the communication unit 55. In the image forming apparatus 30, which is under color management, the CPU 31 controls the inline reading unit 40 (colorimeter 41, scanner 42) to read the color verification chart in the set operating mode. The CPU 51 of the color management device 50 acquires the reading data from the image forming apparatus 30 via the communication unit 55.

[0099] Next, the CPU 51 of the color management device 50 compares the read data (colorimetric values) with the color verification standard and their respective tolerance values ​​to determine whether the colors printed by the image forming apparatus 30 meet the color verification criteria. The CPU 51 stores the determination result in the storage unit 52 and also displays the determination result on the display unit 53.

[0100] (Create a color profile) Next, we will explain how to create a color profile. The CPU 51 of the color management device 50 causes the image forming apparatus 30, which is subject to color management, to print a chart for creating a profile. Next, the CPU 51 causes the image forming apparatus 30, which is subject to color management, to read the chart for profile creation in the set operating mode. The CPU 51 acquires the read data from the image forming apparatus 30 via the communication unit 55. The process for printing and reading charts is the same as for color verification, except that the target chart is different; therefore, we will omit further explanation.

[0101] For each patch included in the chart for creating the profile, the absolute value of the target color (L * a * b * The values ​​(etc.) are predetermined. The CPU 51 creates a color profile based on the difference between the reading data (colorimetric value) and the target value in each patch. For example, the CPU 51 creates a printer profile, a device link profile, etc. The CPU 51 transmits the created color profile to the image forming apparatus 30, which is subject to color management, via the communication unit 55. In the image forming apparatus 30, which is subject to color management, the CPU 31 stores the color profile in the storage unit 32.

[0102] (Color correction) Next, color correction will be explained. Color correction includes adjusting the maximum density, adjusting for unevenness in the image forming apparatus 30, and adjusting the gradation. The CPU 51 of the color management device 50 performs color correction specified by the user. The CPU 51 causes the image forming apparatus 30, which is responsible for color management, to print a color correction chart. Next, the CPU 51 causes the image forming apparatus 30, which is subject to color management, to read the color correction chart in the set operating mode. The CPU 51 acquires the read data from the image forming apparatus 30 via the communication unit 55. The process for printing and reading charts is the same as for color verification, except that the target chart is different, so we will omit the detailed explanation. Regarding chart printing, if processing by the printer controller 20 is not required, the color management device 50 can directly send a print command for the chart to the color-managed image forming apparatus 30.

[0103] For example, in the case of maximum density adjustment, the CPU 51 displays the measurement result of the maximum density and the comparison result with a predetermined target value for each CMYK (or CMYKW) color on the display unit 53. The CPU 51 accepts input of the adjustment value related to the maximum density from the user's operation unit 54. Alternatively, the CPU 51 may automatically calculate the adjustment value related to the maximum density based on the measurement result and the target value. The CPU 51 transmits the adjustment value related to the maximum density to the image forming apparatus 30 that is subject to color management via the communication unit 55. In the image forming apparatus 30, which is subject to color management, the CPU 31 stores the adjustment value related to the maximum density in the storage unit 32.

[0104] (Color matching against color samples) Next, we will explain color matching with color samples. The CPU 51 of the color management device 50 creates (modifies) a target profile used to match the color of the printed material produced by the image forming apparatus 30 to the color of a color sample (target output). The CPU 51 provides the created target profile to the image forming apparatus 30. The color sample is an output received from the customer at the time of submission, and is an actual output, not data. The target profile is created by inputting the original image data (CMYK values) of the color sample into the target printing press and the colorimetric values ​​(L) obtained from the color sample. * a * b * This represents the correspondence with the value.

[0105] CPU51 acquires the original image data (CMYK values) corresponding to the color sample. The original image data is the image data that was used as the basis for printing the color sample, and is the data submitted by the customer.

[0106] The CPU 51 acquires scanned image data (RGB values) obtained by the document reading unit 37 of the image forming apparatus 30 reading the color sample. The CPU 51 uses a pre-prepared scanner profile for the document reading unit 37 to convert the RGB values ​​of the scanned image data to L * a * b * Convert to a value. Note that the scanner profile of the document reading unit 37 is assumed to be reliable. The CPU 51 also obtains the measured color value (L) for the color sample from a colorimeter connected to the color management device 50. * a * b * You may also retrieve the value.

[0107] The CPU 51 of the color management device 50 calculates the CMYK values ​​and L for corresponding positions in the original image data and the scanned image data. * a * b *A table is created that maps values ​​to each other. CPU51 uses this table to create a target profile to match the color of the color swatch. By combining the creation of a target profile and the creation of a printer profile, the color of the printed material produced by the image forming apparatus 30 can be matched to the color of a color sample.

[0108] Next, we will explain the operation of the color management system 100. Figure 16 is a flowchart showing the color management execution process performed in the color management device 50.

[0109] First, the CPU 51 accepts the selection of the image forming apparatus 30 to be color-managed and the color management function (step S1). The user selects the image forming apparatus 30 and the color management function by operating the control unit 54. As the color management function, one or more of the following can be selected: color verification, color profile creation, and color correction.

[0110] Next, the CPU 51 accepts the paper print settings (step S2). The user sets various items regarding the paper information and print settings for the paper to be color-managed, using operations from the control unit 54. The details of the paper information and print settings are the same as those contained in the color management preset table T3 (see Figure 10).

[0111] Next, the CPU 51 accepts the setting of the color management dataset (step S3). The CPU 51 displays the color management dataset selection screen 60 shown in Figure 17 on the display unit 53. The color management dataset selection screen 60 includes a color management dataset selection field 61, a colorimeter display field 62, an operation mode display field 63, a color measurement condition display field 64, a color measurement averaging count display field 65, a processing time display field 66, etc. The color management dataset selection field 61 is an area for selecting one of the color management datasets (target configurations) registered in the color management dataset table T2 (see Figure 9). The colorimeter display area 62, the operation mode display area 63, the color measurement conditions display area 64, and the number of color measurement averages display area 65 each display the various settings included in the color management dataset selected in the color management dataset selection area 61. The processing time display area 66 shows the processing time related to color management corresponding to the operating mode displayed in the operating mode display area 63.

[0112] In the color management dataset selection field 61 of the color management dataset selection screen 60, the user sets one of the color management datasets by operating from the operation unit 54. CPU 51 obtains the operating mode settings corresponding to the configured color management dataset (step S4). Specifically, CPU 51 refers to the color management dataset table T2 to obtain the operating mode settings included in the configured color management dataset.

[0113] Next, the CPU 51 determines whether the operating mode indicated by the acquired operating mode setting is the accuracy priority mode (step S5). If the operating mode is accuracy priority mode (step S5; YES), the CPU 51 displays the processing time for color management in accuracy priority mode on the display unit 53 (step S6). Specifically, the CPU 51 determines the processing time for color management according to the number of patches and / or the arrangement of the patches included in the chart used for color management. In accuracy priority mode, the colorimeter 41 mainly moves in the paper width direction while reading the paper, so the time required for color management is longer compared to speed priority mode. The CPU 51 displays the processing time for color management in accuracy priority mode in the processing time display field 66 of the color management dataset selection screen 60.

[0114] Next, the CPU 51 performs color management on the image forming apparatus 30, which is subject to color management, in accuracy priority mode (step S7). The CPU 51 performs color management on the image forming apparatus 30 based on the color management dataset set in step S3.

[0115] Specifically, the CPU 51 transmits a print command for the chart to the printer controller 20 or the image forming apparatus 30 via the communication unit 55. The CPU 51 also transmits a read command for the chart in accuracy priority mode to the image forming apparatus 30 via the communication unit 55. The CPU 31 of the image forming apparatus 30 controls the image forming unit 36 ​​to print the chart. The CPU 31 also controls the inline reading unit 40 to read the chart in accuracy priority mode. The CPU 51 of the color management device 50 acquires data read from the image forming apparatus 30 in accuracy priority mode via the communication unit 55. The CPU 51 performs color management based on the data read in accuracy priority mode. Details of the color management are as described above.

[0116] In step S5, if the operating mode is not accuracy priority mode (step S5; NO), the CPU 51 displays the processing time for color management in speed priority mode on the display unit 53 (step S8). The details of the process for displaying the processing time are the same as in step S6. In speed priority mode, the paper is mainly read by the scanner 42, so the time required for color management is shorter compared to accuracy priority mode.

[0117] Next, the CPU 51 performs color management related to the selected color management function for the image forming apparatus 30, which is subject to color management, in speed-priority mode (step S9). The CPU 51 performs color management of the image forming apparatus 30 based on the color management dataset set in step S3.

[0118] Specifically, the CPU 51 transmits a print command for the chart to the printer controller 20 or the image forming apparatus 30 via the communication unit 55. The CPU 51 also transmits a read command for the chart in speed priority mode to the image forming apparatus 30 via the communication unit 55. The CPU 31 of the image forming apparatus 30 controls the image forming unit 36 ​​to print the chart. The CPU 31 also controls the inline reading unit 40 to read the chart in speed priority mode. The CPU 51 of the color management device 50 acquires data read from the image forming apparatus 30 in speed-priority mode via the communication unit 55. The CPU 51 performs color management based on the data read in speed-priority mode. After step S7 or step S9, the color management execution process ends.

[0119] After step S6 or step S8, the operator may decide whether or not to perform color management in the set operating mode, taking into account the presented processing time and the quality of the printed material. If the operator decides at step S6 or step S8 not to perform color management in the set operating mode, the process may be restarted from step S3.

[0120] According to the first embodiment, the CPU 51 of the color management device 50 accepts a setting for either an accuracy priority mode (first operating mode) or a speed priority mode (second operating mode). The CPU 51 performs color management based on the data read in the set operating mode. Therefore, the operator can consciously set operating modes in which the ratio of data read by the colorimeter 41 and the scanner 42 differs for the inline reading unit 40 (reading unit) used for color management.

[0121] Furthermore, the CPU 51 accepts the settings for the color management dataset and obtains the settings for the operating mode corresponding to the configured color management dataset. Specifically, the CPU 51 obtains the settings for the operating mode included in the configured color management dataset. Therefore, the CPU 51 can obtain the settings for the operating mode according to the settings for the color management dataset without requiring the operator to make complex judgments.

[0122] For example, in mode A (see Figure 11), the CPU 51 performs color management using only the reading data from the colorimeter 41. Therefore, the CPU 51 can perform color management with high accuracy. In mode D (see Figure 14), the CPU 51 performs color management using only the data read by the scanner 42. Therefore, the CPU 51 can reduce the time required to read the chart and perform color management at high speed. In modes B (see Figure 12) and C (see Figure 13), the CPU 51 performs color management using reading data from both the colorimeter 41 and the scanner 42. Therefore, the CPU 51 can perform color management while balancing accuracy and speed.

[0123] In mode E (see Figure 15), the CPU 51 performs color management using scan data from the scanner 42 that has been corrected based on the reading data from the colorimeter 41. By using scan data from the scanner 42 that has been corrected based on the reading data from the colorimeter 41, the CPU 51 can ensure accuracy in color management. In addition, since the colorimeter 41 does not move in the paper width direction when reading the chart, the time required to read the chart can be reduced.

[0124] Furthermore, when the CPU 51 receives a setting for a color management dataset, it obtains the setting for the operating mode corresponding to the set color management dataset and displays the processing time for color management corresponding to the operating mode indicated by the setting. This allows the operator to understand the processing time for color management corresponding to the operating mode.

[0125] Furthermore, the CPU 51 determines the processing time for color management depending on the number of patches to be read and / or the arrangement of the patches. This allows the CPU 51 to determine the processing time based on the chart configuration.

[0126] In the first embodiment, the case in which the operating mode setting is included in the color management dataset was described. The operating mode setting does not need to be included in the color management dataset and may be managed as separate data from the color management dataset. It is sufficient that the CPU 51 of the color management device 50 can identify the operating mode setting corresponding to the color management dataset when acquiring the operating mode setting. Furthermore, it is not necessary for the operating mode corresponding to the color management dataset to be pre-registered. For example, the operating mode may be automatically set based on a predetermined algorithm.

[0127] In the color management execution process (see Figure 16), the CPU 51 of the color management device 50 is configured to display the processing time related to color management, regardless of whether the operating mode is accuracy priority mode or speed priority mode. Alternatively, the CPU 51 may omit displaying the processing time related to color management (step S8) when the operating mode is speed priority mode (step S5; NO).

[0128] The section on color management execution described a case where the operating mode is set in conjunction with the user setting the color management dataset. Alternatively, the user may directly set the operating mode when color management is executed.

[0129] Figure 18 shows an example of the color measurement setting screen 70 displayed on the display unit 53 of the color management device 50 when the user directly sets the operating mode. The color measurement setting screen 70 includes a chart selection field 71, a colorimeter display field 72, an operating mode selection field 73, a color measurement condition selection field 74, a color measurement averaging count input field 75, a processing time display field 76, and the like. The chart selection field 71 is an area for selecting one of the pre-registered color management charts. The colorimeter display area 72 displays the colorimeter corresponding to the operating mode selected in the operating mode selection area 73. The operating mode selection field 73 is an area for selecting the operating mode. Here, the options for accuracy priority and speed priority are displayed as pull-down menus, and either can be selected. Alternatively, modes A to E mentioned above may be displayed as options, allowing any of the operating modes to be selected. The colorimetric condition selection field 74 is an area for selecting colorimetric conditions. The input field 75 for the number of colorimetric averaging operations is an area for entering the number of colorimetric averaging operations. The processing time display area 76 displays the processing time for color management corresponding to the operating mode selected in the operating mode selection area 73.

[0130] The CPU 51 of the color management device 50 accepts the setting of either accuracy priority mode (first operating mode) or speed priority mode (second operating mode) from the user's operation unit 54. The CPU 51 performs color management based on the data read in the set operating mode. Therefore, the operator can consciously set operating modes in which the ratio of data read by the colorimeter 41 and the scanner 42 differs for the inline reading unit 40 (reading unit) used for color management.

[0131] Furthermore, when the CPU 51 receives a setting for the operating mode, it displays the processing time for color management corresponding to the set operating mode. Specifically, the CPU 51 displays the processing time for color management corresponding to the set operating mode in the processing time display field 76 of the color measurement setting screen 70. This allows the operator to understand the processing time for color management corresponding to the operating mode.

[0132] [Example 1] A modified example of the first embodiment will be described. If color management performed based on data read in speed-priority mode (second operating mode) fails, the CPU 51 of the color management device 50 performs color management based on data read in accuracy-priority mode (first operating mode).

[0133] Figure 19 is a flowchart showing the first additional processing performed in the color management device 50. This processing is performed additionally following step S9 of the color management execution process (see Figure 16).

[0134] The CPU 51 performs color management related to the selected color management function in speed-priority mode for the image forming apparatus 30 that is subject to color management (step S11). The CPU 51 performs color management based on the data read in speed-priority mode. Note that in Figure 19, for clarity, step S11 is shown as the same as step S9.

[0135] Next, the CPU 51 determines whether color management has failed (step S12). For example, in color verification, the CPU 51 determines that color management has failed if the data read from the chart printed by the image forming apparatus 30 deviates from the target value of the standard. Also, in the creation of a color profile or color correction, the CPU 51 determines that color management has failed if the predetermined criteria are not met.

[0136] If color management fails (step S12; YES), the CPU 51 performs color management related to the selected color management function in accuracy priority mode for the image forming apparatus 30 that is subject to color management (step S13). The CPU 51 performs color management based on the data read in accuracy priority mode.

[0137] If color management does not fail after step S13 or in step S12 (step S12; NO), the first additional process is terminated.

[0138] According to Modification 1, the CPU 51 of the color management device 50 can perform color management based on more accurate reading data if color management fails.

[0139] Furthermore, if color management performed based on data read in accuracy priority mode (first operating mode) fails, the CPU 51 of the color management device 50 may perform color management based on data read in speed priority mode (second operating mode).

[0140] [Differentiation 2] A second modified example of the first embodiment will be described. The CPU 51 of the color management device 50 performs color management based on the data read in accuracy priority mode (first operating mode), and then, when a predetermined number of prints are executed by the image forming apparatus 30, performs color management based on the data read in speed priority mode (second operating mode).

[0141] Figure 20 is a flowchart showing the second additional processing performed in the color management device 50. This processing is performed additionally following step S7 of the color management execution process.

[0142] The CPU 51 performs color management related to the selected color management function in accuracy priority mode for the image forming apparatus 30 that is subject to color management (step S21). The CPU 51 performs color management based on the data read in accuracy priority mode. Note that in Figure 20, for clarity, step S21 is shown as the same as step S7.

[0143] Subsequently, the CPU 51 receives a notification via the communication unit 55 from the image forming apparatus 30, which is subject to color management, indicating that a print job is to be executed. The CPU 51 clears the count counter corresponding to the image forming apparatus 30 that is subject to color management (step S22). The count counter corresponding to each image forming apparatus 30 is stored in the storage unit 52.

[0144] The CPU 51 receives a notification via the communication unit 55 from the color-managed image forming apparatus 30 indicating that printing has been performed on one sheet of paper (step S23). The CPU 51 adds 1 to the sheet counter corresponding to the color-managed image forming apparatus 30 (step S24).

[0145] The CPU 51 determines whether the print job has finished in the color-managed image forming apparatus 30 (step S25). For example, the CPU 51 determines that the print job has finished when it receives a notification from the color-managed image forming apparatus 30 via the communication unit 55 indicating that the print job has finished.

[0146] If the print job has not finished (step S25; NO), the CPU 51 determines whether the value of the page counter matches a predetermined number of pages (step S26). The predetermined number of pages is a value predetermined as the execution interval for color management. If the value of the counter does not match the predetermined number (step S26; NO), the process returns to step S23.

[0147] In step S26, if the value of the count counter matches a predetermined number (step S26; YES), the CPU 51 performs color management related to the selected color management function in speed-priority mode for the image forming apparatus 30 that is subject to color management (step S27). The CPU 51 performs color management based on the data read in speed-priority mode. After that, the process returns to step S22.

[0148] If the print job is completed in step S25 (step S25; YES), the second additional processing is terminated.

[0149] Regarding the second additional processing, steps S22 to S26 may be performed on the image forming apparatus 30, which is the color management device. In this case, the CPU 51 of the color management device 50 performs the processing in step S27 after receiving notification from the image forming apparatus 30 that a predetermined number of prints have been executed.

[0150] According to Modification 2, the CPU 51 of the color management device 50 can maintain accurate color management at all times by performing a simplified color management in speed-priority mode at predetermined intervals (number of printed pages) after initially performing color management in accuracy-priority mode.

[0151] [Second Embodiment] Next, a second embodiment to which the present invention is applied will be described. Since the color management system in the second embodiment has the same configuration as the color management system 100 shown in the first embodiment, the same reference numerals are used for the same components as in the first embodiment, and their descriptions are omitted. The configurations and processes characteristic of the second embodiment will be described below.

[0152] The CPU 51 of the color management device 50 accepts the setting of an operating mode, which indicates either accuracy priority mode (first operating mode) or speed priority mode (second operating mode), when registering a color management dataset. When the CPU 51 accepts the setting of an operating mode when registering a color management dataset, it presents the processing time for color management corresponding to the set operating mode.

[0153] Next, the operation of the color management system 100 in the second embodiment will be described. Figure 21 is a flowchart showing the first color management dataset registration process performed in the color management device 50.

[0154] First, the CPU 51 displays the registration screen 80 for the color management dataset shown in Figure 22 on the display unit 53 (step S31). The registration screen 80 for the color management dataset includes a color management dataset name input field 81, a chart selection field 82, a colorimeter selection field 83, an operation mode selection field 84, a color measurement condition selection field 85, a color measurement averaging count input field 86, a processing time display field 87, a registration button 88, and the like. The input field 81 for the color management dataset name is an area for entering the name of a new color management dataset to be registered. Chart selection area 82 is an area for selecting the chart to be used for color management. The colorimeter selection area 83 is a region for selecting a colorimeter. The operating mode selection field 84 is an area for selecting the operating mode. The color measurement condition selection field 85 is an area for selecting color measurement conditions. The input field 86 for the number of colorimetric averaging operations is an area for entering the number of colorimetric averaging operations. The processing time display field 87 shows the processing time for color management corresponding to the operation mode selected in the operation mode selection field 84. The registration button 88 is a button used to instruct the user to register a color management dataset.

[0155] The CPU 51 determines whether an operating mode has been set on the color management dataset registration screen 80 (step S32). The user sets one of the operating modes (accuracy priority mode, speed priority mode) in the operating mode selection field 84 by operating from the operation unit 54. If an operating mode is set (step S32; YES), the CPU 51 displays the processing time corresponding to the set operating mode on the display unit 53 (step S33). Specifically, the CPU 51 determines the processing time for color management according to the number of patches and / or the arrangement of patches included in the chart selected in the chart selection field 82. The CPU 51 displays the processing time for color management corresponding to the set operating mode in the processing time display field 87 of the color management dataset registration screen 80.

[0156] If the operating mode is not set after step S33, or in step S32 (step S32; NO), the CPU 51 accepts settings for each item in the color management dataset (step S34). Although not shown in Figure 22, each item included in the color management dataset table T2 (see Figure 9) can be set. The user sets each item by operating from the operation unit 54.

[0157] Next, the CPU 51 determines whether or not an instruction to register a color management dataset has been received from the operation unit 54 (step S35). Specifically, the CPU 51 determines whether or not the registration button 88 has been pressed on the color management dataset registration screen 80. If the registration button 88 is not pressed (step S35; NO), the process returns to step S32.

[0158] In step S35, if the registration button 88 is pressed (step S35; YES), the CPU 51 registers the color management dataset with the configured settings (step S36). Specifically, the CPU 51 stores the color management dataset name, operation mode, etc., in the color management dataset table T2. This completes the registration process for the first color management dataset.

[0159] According to the second embodiment, when the CPU 51 of the color management device 50 receives a setting for the operating mode during the registration of a color management dataset, it presents the processing time for color management corresponding to the set operating mode. This allows the operator to understand the processing time for color management corresponding to the operating mode.

[0160] [Third Embodiment] Next, a third embodiment to which the present invention is applied will be described. The color management system in the third embodiment has the same configuration as the color management system 100 shown in the first embodiment. Therefore, the same reference numerals are used for the same components as in the first embodiment, and their descriptions are omitted. The configurations and processes characteristic of the third embodiment will be described below.

[0161] The color management dataset includes the settings for the charts used in color management. In the color management dataset table T2 shown in Figure 9, the profiling chart and color verification wedge correspond to the "charts used in color management." Furthermore, the storage unit 52 of the color management device 50 stores in advance the correspondence between the chart used for color management and the operating mode used when reading that chart.

[0162] The CPU 51 of the color management device 50 automatically sets the operating mode corresponding to the configured chart when registering a color management dataset, according to the chart settings. For example, the CPU 51 automatically sets the accuracy priority mode when a chart with a small number of patches is configured. The CPU 51 automatically sets the speed priority mode when a chart with a large number of patches is configured. The CPU 51 also automatically sets the accuracy priority mode when a chart for high-precision color management is configured.

[0163] Figure 23 is a flowchart showing the second color management dataset registration process performed in the color management device 50. The process in step S41 is the same as the process in step S31 in the first color management dataset registration process (see Figure 21), so the explanation is omitted.

[0164] Next, the CPU 51 determines whether a chart has been set on the registration screen 80 for the color management dataset shown in Figure 22 (step S42). The user sets one of the charts in the chart selection field 82 by operating from the operation unit 54. If a chart is set (step S42; YES), the CPU 51 automatically sets the operating mode corresponding to the set chart (step S43). The CPU 51 displays the operating mode corresponding to the set chart in the operating mode selection field 84.

[0165] If a chart is not set after step S43 or in step S42 (step S42; NO), the process proceeds to step S44. The processing in steps S44 to S46 is the same as the processing in steps S34 to S36 in the first color management dataset registration process, so the explanation is omitted.

[0166] According to the third embodiment, the CPU 51 of the color management device 50 automatically sets the operating mode corresponding to the configured chart when registering a color management dataset, according to the chart settings. Therefore, even operators with little experience in color management can easily set the operating mode.

[0167] In the third embodiment, a case was described in which the operating mode is automatically set in conjunction with the chart settings. Alternatively, the operating mode may be automatically set in conjunction with the color management standard settings. The color management dataset includes the color management standard settings. In the color management dataset table T2 shown in Figure 9, the color verification settings correspond to the "color management standard". Furthermore, the memory unit 52 of the color management device 50 stores in advance the correspondence between a color management standard and the operating mode used when performing color management based on that color management standard.

[0168] The CPU 51 of the color management device 50 automatically sets the operating mode corresponding to the set color management standard when registering a color management dataset, according to the set color management standard. Depending on the set color management standard, it may be necessary to have high-precision color management or to have simple color management. Therefore, the CPU 51 automatically sets the operating mode according to the degree of strictness of the color management standard. Specifically, in steps S42 and S43 of the second color management dataset registration process (see Figure 23), "chart" should be replaced with "color management standard".

[0169] Even in this case, operators with little experience in color management can easily set the operating mode.

[0170] [Fourth Embodiment] Next, a fourth embodiment to which the present invention is applied will be described. The color management system in the fourth embodiment has the same configuration as the color management system 100 shown in the first embodiment. Therefore, the same reference numerals are used for the same components as in the first embodiment, and their descriptions are omitted. The configurations and processes characteristic of the fourth embodiment will be described below.

[0171] Among the multiple image forming apparatuses 30 subject to color management, there may be some inline reading units 40 (reading units) installed on the transport path of the paper printed by the image forming apparatus 30 that do not have an accuracy priority mode (first operating mode). In the fourth embodiment, the printer information table T1 (see Figure 8) includes information indicating whether or not the image forming apparatus 30 (inline reading unit 40) has an accuracy priority mode as printer information for each image forming apparatus 30.

[0172] It is not possible to perform color management by combining a color management dataset that includes the accuracy priority mode setting with an image forming apparatus 30 that does not have the accuracy priority mode. Therefore, the CPU 51 of the color management device 50 prohibits the association of the color management dataset that includes the accuracy priority mode setting with the image forming apparatus 30 that does not have the accuracy priority mode.

[0173] Next, the operation of the color management system 100 in the fourth embodiment will be described. Figure 24 is a flowchart showing the first color management preset registration process performed in the color management device 50.

[0174] First, the CPU 51 of the color management device 50 displays the color management preset registration screen on the display unit 53 (step S51). The CPU 51 accepts the selection of the image forming apparatus 30 to be color-managed (step S52). The user selects the image forming apparatus 30 by operating the control unit 54.

[0175] Next, the CPU 51 refers to the printer information table T1 to determine whether the inline reading unit 40 of the selected image forming apparatus 30 has an accuracy priority mode (step S53). If the inline reading unit 40 of the selected image forming apparatus 30 is equipped with an accuracy priority mode (step S53; YES), the CPU 51 displays the candidate color management datasets on the display unit 53 (step S54). Here, the CPU 51 displays all color management datasets registered in the color management dataset table T2 (see Figure 9) without any particular restrictions.

[0176] In step S53, if the inline reading unit 40 of the selected image forming apparatus 30 does not have an accuracy priority mode (step S53; NO), the process proceeds to step S55. In step S55, the CPU 51 displays on the display unit 53 only the color management datasets registered in the color management dataset table T2 that do not include the accuracy priority mode setting, as selection candidates. In other words, the CPU 51 excludes color management datasets that include the accuracy priority mode setting from the selection candidates.

[0177] After step S54 or step S55, the CPU 51 accepts the selection of one of the color management datasets displayed as a selection candidate (step S56). The user selects the color management dataset by operating the operation unit 54.

[0178] Next, the CPU 51 accepts the paper print settings (step S57). The user sets various items regarding the paper information and print settings for the paper to be color-managed, using operations from the control unit 54. The details of the paper information and print settings are the same as those contained in the color management preset table T3 (see Figure 10).

[0179] Next, the CPU 51 associates the selected image forming apparatus 30 with the selected color management dataset and paper print setting information to register a color management preset (step S58). Specifically, the CPU 51 associates the printer name, color management dataset name, paper print setting information, etc., and stores them in the color management preset table T3. This completes the registration process for the first color management preset.

[0180] According to the fourth embodiment, the CPU 51 of the color management device 50 prohibits the association of a color management dataset, which includes the setting of the accuracy priority mode (first operating mode), with an image forming apparatus 30 that does not have the accuracy priority mode. In executing color management, the CPU 51 prohibits the association of incompatible color management datasets and image forming apparatuses 30, thereby preventing errors from occurring.

[0181] In the first color management preset registration process, step S55 described the case where only color management datasets that do not include the accuracy priority mode setting are selected as candidates. Alternatively, the CPU 51 may select from all color management datasets and display a warning if the selected color management dataset includes the accuracy priority mode setting. For example, the CPU 51 displays a message on the display unit 53 indicating that the selected color management dataset cannot be associated with the selected image forming apparatus 30.

[0182] Furthermore, the process for registering a color management preset was described in the first color management preset registration process. Alternatively, the CPU 51 of the color management device 50 may, when performing color management, prohibit the association of a color management dataset that includes the setting of the accuracy priority mode with an image forming apparatus 30 that does not have an accuracy priority mode.

[0183] [Fifth Embodiment] Next, a fifth embodiment to which the present invention is applied will be described. The color management system in the fifth embodiment has the same configuration as the color management system 100 shown in the first embodiment. Therefore, the same reference numerals are used for the same components as in the first embodiment, and their descriptions are omitted. The configurations and processes characteristic of the fifth embodiment will be described below.

[0184] Among the multiple image forming apparatuses 30 subject to color management, there may be some inline reading units 40 (reading units) installed on the transport path of the paper printed by the image forming apparatus 30 that do not have an accuracy priority mode (first operating mode). In the fifth embodiment, the printer information table T1 (see Figure 8) also includes information indicating whether or not the image forming apparatus 30 (inline reading unit 40) has an accuracy priority mode, as printer information for each image forming apparatus 30.

[0185] The CPU 51 of the color management device 50 automatically changes the operating mode setting included in the color management dataset to speed priority mode (second operating mode) when the color management dataset, which includes the setting for accuracy priority mode, is associated with an image forming apparatus 30 that does not have an accuracy priority mode.

[0186] Next, the operation of the color management system 100 in the fifth embodiment will be described. Figure 25 is a flowchart showing the second color management preset registration process performed in the color management device 50.

[0187] The processes in steps S61 and S62 are the same as those in steps S51 and S52 of the first color management preset registration process (see Figure 24), so their explanation is omitted.

[0188] Next, the CPU 51 accepts the selection of a color management dataset (step S63). The CPU 51 displays the color management datasets registered in the color management dataset table T2 (see Figure 9) as selection candidates. The user selects a color management dataset by operating the operation unit 54.

[0189] Next, the CPU 51 refers to the printer information table T1 to determine whether the inline reading unit 40 of the selected image forming apparatus 30 has an accuracy priority mode (step S64). If the inline reading unit 40 of the selected image forming apparatus 30 does not have an accuracy priority mode (step S64; NO), the process proceeds to step S65. In step S65, the CPU 51 refers to the color management dataset table T2 and determines whether the selected color management dataset includes an accuracy priority mode setting.

[0190] If the selected color management dataset includes a setting for accuracy priority mode (step S65; YES), the CPU 51 changes the operating mode of the color management dataset to speed priority mode (step S66). The CPU 51 may also re-register the color management dataset with a different name after changing the operating mode setting.

[0191] In step S64, if the inline reading unit 40 of the selected image forming apparatus 30 is equipped with an accuracy priority mode (step S64; YES), the process proceeds to step S67. If, after step S66, or in step S65, the selected color management dataset does not include a setting for accuracy priority mode (step S65; NO), the process proceeds to step S67.

[0192] The processes in steps S67 and S68 are the same as those in steps S57 and S58 of the first color management preset registration process (see Figure 24), so their explanation is omitted. However, if the operating mode setting included in the color management dataset is changed in step S66, the CPU 51 registers a color management preset using the modified color management dataset in step S68. This completes the process of registering the second color management preset.

[0193] According to the fifth embodiment, when a color management dataset containing the setting for accuracy priority mode (first operating mode) is associated with an image forming apparatus 30 that does not have accuracy priority mode, the CPU 51 of the color management device 50 automatically changes the setting of the operating mode included in the color management dataset to speed priority mode (second operating mode). In executing color management, the CPU 51 changes the setting of the operating mode included in the color management dataset for color management datasets and image forming apparatus 30 that cannot be combined, thereby preventing errors from occurring.

[0194] Furthermore, the process for registering a color management preset was described in the second color management preset registration process. Alternatively, when the CPU 51 of the color management device 50 performs color management, if a color management dataset that includes the setting for accuracy priority mode is associated with an image forming apparatus 30 that does not have an accuracy priority mode, the CPU 51 may automatically change the setting of the operating mode included in the color management dataset to speed priority mode.

[0195] The above descriptions of embodiments and modifications are examples of the color management method, color management apparatus, and program according to the present invention, and are not limited thereto. The detailed configuration and detailed operation of each device constituting the system can also be modified as appropriate without departing from the spirit of the present invention. For example, characteristic processes in each embodiment and modified example may be combined and executed.

[0196] Furthermore, the types and number of operating modes in the color management of the image forming apparatus 30 are not limited to the above examples. Furthermore, the charts used for color management are not limited to charts 201-205 shown in Figures 11-15. The number and arrangement of patches included in the charts can also be changed as appropriate.

[0197] Furthermore, although the inline reading unit 40 is described as part of the image forming apparatus 30, the inline reading unit 40 may also be an inline reading device independent of the image forming apparatus 30. Furthermore, the color management device 50 may be an independent device or may be included in other devices. For example, the color management device 50 may be included in the printer controller 20 or the image forming apparatus 30, or it may be included in the aforementioned inline reader. Furthermore, in each of the above embodiments and modifications, the processing performed by the CPU 51 (color management application) of the color management device 50 may be performed by another device within the color management system 100, or by a device that can be connected to the color management system 100. Alternatively, the processing performed by the CPU 51 of the color management device 50 may be performed by multiple devices working together.

[0198] In the embodiments and modifications described above, the case in which the image forming apparatus 30 is an electrophotographic image forming apparatus that forms images using toner has been described, but it is not limited to this. The image forming apparatus 30 may be an inkjet image forming apparatus or the like.

[0199] Furthermore, the various data stored in the memory unit 52 of the color management device 50 (printer information, color management dataset, color management presets, etc.) can be stored in an external device or the like, as long as the CPU 51 can access them.

[0200] The computer-readable medium used to store the programs for executing each process is not limited to the examples above. Furthermore, a carrier wave may be used as the medium for providing program data via a communication line.

[0201] The embodiments disclosed herein are for illustrative purposes only and not intended to limit the scope of the invention. The scope of the invention should be interpreted as described in the claims. [Explanation of Symbols]

[0202] 10 PC 20 Printer Controllers 30 Image forming apparatus 31 CPU 32 Storage section 33 Display section 34 Control section 35 Communications Department 36 Image forming unit 40 Inline reading unit 41 Colorimeter 42 Scanners 50 color management device 51 CPU 52 Storage section 53 Display section 54 Control section 55 Communications Department 100-Color Management System 521 Color Management Application Program N Communication Network T1 Printer Information Table T2 Color Management Dataset Table T3 Color Management Preset Table

Claims

1. A color management method performed by a color management device that performs color management based on reading data of the paper by a reading unit installed on the transport path of the paper printed by the image forming unit, The reading unit is, A colorimeter and Scanner and Equipped with, The aforementioned color management device is When the colorimeter moves a first width in the paper width direction and accepts a setting for a first operating mode in which the colorimeter reads all or some of the multiple patches arranged in the paper width direction, color management is performed based on the data read in the first operating mode. When the colorimeter stops in the paper width direction or moves by a second width smaller than the first width, and the scanner accepts a setting for a second operating mode in which it reads all or some of the multiple patches arranged in the paper width direction, color management is performed based on the data read in the second operating mode. Color management method.

2. The aforementioned color management device performs color management based on a color management dataset. The aforementioned color management device is The settings for the aforementioned color management dataset are accepted. The setting of an operating mode indicating either the first operating mode or the second operating mode, corresponding to the set color management dataset, is obtained. Color management is performed based on the data read in the operating mode indicated by the acquired operating mode setting. The color management method according to claim 1.

3. The color management dataset includes the setting of the operating mode, The color management device performs color management based on the data read in the operating mode indicated by the setting of the operating mode included in the set color management dataset. The color management method according to claim 2.

4. In the first operating mode, The aforementioned colorimeter reads some of the patches among a plurality of patches arranged in the width direction of the paper, The scanner reads, among a plurality of patches arranged in the width direction of the paper, all patches other than the ones read by the colorimeter. The color management method according to claim 1.

5. In the second operating mode, The colorimeter stops, The scanner reads all or some of the multiple patches arranged in the width direction of the paper. The color management method according to claim 1.

6. In the second operating mode, The scanner reads some of the patches among the multiple patches arranged in the width direction of the paper, The colorimeter reads, among a plurality of patches arranged in the width direction of the paper, the patches other than the ones read by the scanner. The color management method according to claim 1.

7. In the second operating mode, Based on the data read by the colorimeter, the data read by the scanner is corrected. The color management method according to claim 1.

8. The aforementioned color management includes at least one of the following: color verification, color profile creation, and color correction. The color management method according to claim 1.

9. When the color management device receives a setting for an operating mode indicating either the first operating mode or the second operating mode, it presents the processing time for color management corresponding to the set operating mode. The color management method according to claim 1.

10. When the color management device receives the setting of the first operating mode, it displays the processing time related to the color management. The color management method according to claim 9.

11. The image printed by the image forming unit is a color management patch, The color management device determines the processing time for color management according to the number of patches to be read and / or the arrangement of the patches. The color management method according to claim 9.

12. If the color management performed based on the data read in the second operating mode fails, the color management device performs color management based on the data read in the first operating mode. The color management method according to claim 1.

13. The color management device performs color management based on the data read in the first operating mode, and then, when a predetermined number of prints are performed by the image forming unit, performs color management based on the data read in the second operating mode. The color management method according to claim 1.

14. The aforementioned color management dataset includes the settings for the chart used in the color management, The color management device, in registering the color management dataset, automatically sets the operating mode corresponding to the configured chart according to the chart settings. The color management method according to claim 3.

15. The aforementioned color management dataset includes the setting of a color management standard, The color management device, in registering the color management dataset, automatically sets an operating mode corresponding to the set color management standard, according to the set color management standard. The color management method according to claim 3.

16. The color management device is capable of color management for image forming units other than the image forming unit, The reading unit installed in the transport path for paper printed by the other image forming unit does not have the first operating mode. The color management device prohibits the color management dataset, which includes the setting of the first operating mode, from being associated with the other image forming unit. The color management method according to claim 3.

17. The color management device is capable of color management for image forming units other than the image forming unit, The reading unit installed in the transport path for paper printed by the other image forming unit does not have the first operating mode. The color management device automatically changes the operating mode settings included in the color management dataset to the second operating mode when the color management dataset, which includes the setting of the first operating mode, is associated with the other image forming unit. The color management method according to claim 3.

18. A color management device comprising a control unit that performs the color management method according to any one of claims 1 to 17.

19. A program for causing a computer that controls a color management device to execute the color management method described in any one of claims 1 to 17.

Images