WO2010082321A1 - プログラム、画像形成方法、及び印刷システム - Google Patents
プログラム、画像形成方法、及び印刷システム Download PDFInfo
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- WO2010082321A1 WO2010082321A1 PCT/JP2009/050381 JP2009050381W WO2010082321A1 WO 2010082321 A1 WO2010082321 A1 WO 2010082321A1 JP 2009050381 W JP2009050381 W JP 2009050381W WO 2010082321 A1 WO2010082321 A1 WO 2010082321A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/52—Arrangement for printing a discrete number of tones, not covered by group B41J2/205, e.g. applicable to two or more kinds of printing or marking process
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/56—Processing of colour picture signals
- H04N1/60—Colour correction or control
- H04N1/603—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer
- H04N1/6052—Matching two or more picture signal generators or two or more picture reproducers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
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- H—ELECTRICITY
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- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
- H04N1/00007—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for relating to particular apparatus or devices
- H04N1/00015—Reproducing apparatus
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
- H04N1/00007—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for relating to particular apparatus or devices
- H04N1/00023—Colour systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
- H04N1/00026—Methods therefor
- H04N1/00031—Testing, i.e. determining the result of a trial
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
- H04N1/00026—Methods therefor
- H04N1/00045—Methods therefor using a reference pattern designed for the purpose, e.g. a test chart
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- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
- H04N1/00026—Methods therefor
- H04N1/00053—Methods therefor out of service, i.e. outside of normal operation
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- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
- H04N1/00026—Methods therefor
- H04N1/00058—Methods therefor using a separate apparatus
- H04N1/00061—Methods therefor using a separate apparatus using a remote apparatus
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- H04N1/00071—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for characterised by the action taken
- H04N1/00082—Adjusting or controlling
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- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00204—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
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- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00278—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a printing apparatus, e.g. a laser beam printer
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- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32502—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device in systems having a plurality of input or output devices
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- H04N1/32502—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device in systems having a plurality of input or output devices
- H04N1/32523—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device in systems having a plurality of input or output devices a plurality of output devices
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- H04N1/46—Colour picture communication systems
- H04N1/56—Processing of colour picture signals
- H04N1/60—Colour correction or control
Definitions
- the present invention relates to a program, an image forming method, and a printing system.
- a method of performing distributed printing using a plurality of printing apparatuses is known.
- a printing apparatus for example, a plurality of inkjet printers having the same specifications are used.
- Patent Documents 1, 2, and 3 various methods for suppressing individual differences in printing results for each printing apparatus have been proposed (see, for example, Patent Documents 1, 2, and 3).
- a plurality of color conversion information corresponding to each inkjet printer is generated, and a color conversion table corresponding to each of the plurality of printers specified according to the operating status is provided. Send.
- image forming processing such as RIP processing is usually performed.
- the amount of image forming processing has increased due to the improvement in printing resolution.
- the present invention has the following configuration.
- (Configuration 1) A program for causing a computer to perform image forming processing for forming output image data, which is data indicating images printed by a plurality of printing apparatuses that perform printing by an inkjet method, and ink used in the printing apparatus
- Print data acquisition processing that acquires print data that represents an image with a color system color that does not depend on color reproduction characteristics, and output image data that represents an image with a color that depends on the color reproduction characteristics of the ink used in the printing apparatus
- the computer performs an output image generation process for generating output image data and a data output process for outputting the generated output image data to a plurality of printing apparatuses.
- Rasterization processing that rasterizes the image indicated by the data according to the resolution of the printing device, and one common to multiple printing devices
- an apparatus common color conversion process for performing a common color conversion for a plurality of printing apparatuses, and calibration information prepared for each printing apparatus according to the color reproduction characteristics of each printing apparatus.
- a device-by-device adjustment process that generates output image data adjusted according to the color reproduction characteristics of each printing device by performing adjustments to reduce variations in color reproduction characteristics of each of the plurality of printing devices.
- the plurality of printing apparatuses print the same image based on the output image data adjusted according to the color reproduction characteristics of each printing apparatus.
- This program is provided in a state of being recorded on a recording medium such as a CD-ROM, and is installed in the computer.
- the computer is a host computer that controls the operation of an inkjet printer, for example.
- This computer is provided outside an inkjet printer, for example.
- the output image generation process is, for example, a RIP (Raster Image Processor) process that forms output image data based on print data.
- the output image generation process may further perform other processes in the RIP process.
- the output image generation process may further perform a rendering process or the like.
- Each of the plurality of printing apparatuses is, for example, an ink jet printer used in a printing system that performs distributed printing.
- the plurality of printing apparatuses are preferably, for example, inkjet printers having the same specifications.
- the plurality of printing apparatuses perform printing using, for example, the same ink.
- This ink is, for example, color printing ink such as CMYK ink.
- the CMYK ink is, for example, ink of each color of C (cyan), M (magenta), Y (yellow), and K (black).
- a process using a common ICC profile for a plurality of printing apparatuses and a process using calibration information prepared for each printing apparatus are separated.
- an ICC profile may be an operation that requires a time of about one day to one week or more, for example. Therefore, if an ICC profile is prepared individually for each printing apparatus, the number of work steps increases greatly, resulting in a significant reduction in work efficiency and an increase in cost.
- the color of data before or after conversion by the device common color conversion processing is replaced with the color of the value after correction by the calibration information. If comprised in this way, the correction
- the calibration information for example, information for correcting one value of the device-dependent color or the device-independent color in the ICC profile can be used.
- the calibration information associates the value of the device-dependent color or the device-independent color in the ICC profile with the value corrected according to the color reproduction characteristic of the corresponding printing apparatus.
- the calibration information associates the device-dependent color value in the ICC profile with the corrected device-dependent color value.
- the calibration information may associate the device-independent color value in the ICC profile with the corrected device-independent color value.
- the adjustment process for each apparatus is a process performed before the apparatus common color conversion process
- the adjustment process for each apparatus is performed on, for example, data generated by the rasterization process performed before the apparatus common color conversion process. Make adjustments to reduce variations in color reproduction characteristics.
- the calibration information associates the value of the device-dependent color used in the data generated by the rasterization process with the corrected value.
- the calibration information as described above can be easily and appropriately created with less man-hours than, for example, an ICC profile.
- such calibration information can be created in several minutes to several tens of minutes. Therefore, with this configuration, it is possible to appropriately reduce the man-hours required for creating data necessary for color conversion. In addition, this makes it possible to more appropriately reduce variations in color reproduction characteristics for each printing apparatus.
- the calibration information can be easily created, the calibration information can be adjusted and recreated as necessary.
- the user of the printing apparatus can also create calibration information by himself. Further, for example, it is possible to create new calibration information before starting the daily work. Therefore, with this configuration, for example, it is possible to more flexibly reduce variation in color reproduction characteristics for each printing apparatus.
- (Configuration 2) A plurality of printing apparatuses by obtaining a color chart printing execution process for printing a preset color chart on a plurality of printing apparatuses, and obtaining a color measurement result obtained by measuring the printed color chart with a colorimeter.
- a colorimetric result acquisition process for acquiring a colorimetric result for each print result, and a calibration for generating calibration information corresponding to each of a plurality of printing apparatuses based on the colorimetric results corresponding to each printing apparatus
- the computer further executes information generation processing.
- the colorimeter is provided outside the computer, for example.
- the output image generation process is a RIP (Raster Image Processor) process that forms output image data based on print data, and the colors used in the print data depend on the color reproduction characteristics of a predetermined device.
- the device-dependent color, and the device common color conversion process is a color conversion process using the first ICC profile common to a plurality of printing apparatuses, and the device-dependent color used in the print data is converted to the device-independent.
- a first common color conversion process for converting to a color, and a color conversion process using a second ICC profile common to a plurality of printing apparatuses, and device-independent colors converted by the first common color conversion process are And a second common color conversion process for converting to a device-dependent color that depends on the color reproduction characteristics of ink.
- Both have an inkjet head that ejects ink of each color of CMYK ink, and the adjustment processing for each apparatus is processing performed after the second common color conversion processing, and the calibration information includes the colors of the CMYK color system, CMYK This is information for associating the color of the color system, and the color of the CMYK color system in the ICC profile used in the second common color conversion process is associated with the color corrected for each printing apparatus.
- the adjustment process for each apparatus can be executed appropriately and efficiently.
- this makes it possible to more appropriately reduce variations in color reproduction characteristics for each printing apparatus.
- the output image generation process is a RIP (Raster Image Processor) process that forms output image data based on print data, and the color used in the print data depends on the color reproduction characteristics of a predetermined device.
- the device-dependent color, and the device common color conversion process is a color conversion process using the first ICC profile common to a plurality of printing apparatuses, and the device-dependent color used in the print data is converted to the device-independent color.
- a first common color conversion process for converting to a color, and a color conversion process using a second ICC profile common to a plurality of printing apparatuses, and device-independent colors converted by the first common color conversion process are And a second common color conversion process for converting to a device-dependent color that depends on the color reproduction characteristics of ink, and the adjustment process for each apparatus is the first common color conversion process.
- the calibration information is information for correcting the device-dependent color used in the print data, and the device-dependent color before the first common color conversion process is performed. Corresponds to the corrected color for each printing device.
- the adjustment process for each apparatus can be executed appropriately and efficiently.
- this makes it possible to more appropriately reduce variations in color reproduction characteristics for each printing apparatus.
- the output image generation process is a RIP (Raster Image Processor) process that forms output image data based on print data, and the color used in the print data depends on the color reproduction characteristics of a predetermined device.
- the device-dependent color, and the device common color conversion process is a color conversion process using the first ICC profile common to a plurality of printing apparatuses, and the device-dependent color used in the print data is converted to the device-independent color.
- a first common color conversion process for converting to a color, and a color conversion process using a second ICC profile common to a plurality of printing apparatuses, and device-independent colors converted by the first common color conversion process are And a second common color conversion process for converting to a device-dependent color that depends on the color reproduction characteristics of ink, and the adjustment process for each apparatus is the first common color conversion process. It is a process performed after the conversion process and before the second common color conversion process, and the calibration information is information for correcting the device-independent color after the conversion by the first common color conversion process.
- the device-independent color after conversion by one common color conversion process is associated with the color that has been corrected for each printing apparatus.
- the adjustment process for each apparatus can be executed appropriately and efficiently.
- this makes it possible to more appropriately reduce variations in color reproduction characteristics for each printing apparatus.
- the device-independent color in the first and second ICC profiles is, for example, a color expressed in the Lab color system.
- a color expressed in an XYZ color system or the like can also be used.
- the device-dependent color in the second ICC profile is, for example, a color expressed in the CMYK color system.
- the apparatus adjustment process may be performed a plurality of times.
- the device-by-device adjustment processing may be performed twice or three times by a configuration in which two or three of the above configurations 3 to 5 are combined.
- An image forming method for forming output image data which is data representing an image printed by a plurality of printing apparatuses that perform printing by an inkjet method, and depends on color reproduction characteristics of ink used in the printing apparatus
- a print data acquisition stage for acquiring print data indicating an image with a color system color that is not, and converting the print data into output image data indicating an image with a color depending on the color reproduction characteristics of the ink used in the printing apparatus
- a plurality of printing by using a rasterizing stage for rasterizing in accordance with a single ICC profile common to a plurality of printing apparatuses Color in each of a plurality of printing devices by using a device common color conversion stage that performs common color conversion for each device and calibration information prepared for each printing device according to the color reproduction characteristics of each printing device.
- Each of the plurality of printing apparatuses has an adjustment stage for generating output image data adjusted according to the color reproduction characteristics of each printing apparatus by performing adjustment to reduce variation in reproduction characteristics. The same image is printed based on the output image data adjusted according to the color reproduction characteristics of the printing apparatus. In this way, for example, the same effect as that of Configuration 1 can be obtained.
- a printing system including a plurality of printing apparatuses that perform printing by an inkjet method and an image forming processing apparatus that performs image forming processing for forming output image data that is data indicating an image printed by the printing apparatus.
- the image forming apparatus includes a print data acquisition processing unit that acquires print data indicating an image with a color system that does not depend on color reproduction characteristics of the ink used in the printing apparatus, and an ink used in the printing apparatus.
- Output image generation processing unit for generating output image data by converting the print data into output image data representing an image with a color depending on color reproduction characteristics, and data for outputting the generated output image data to a plurality of printing apparatuses
- An output processing unit, and the output image generation unit rasterizes the image indicated by the print data in accordance with the resolution of the printing apparatus;
- a common color conversion processing unit that performs common color conversion for a plurality of printing devices by using a common ICC profile for a number of printing devices, and printing according to the color reproduction characteristics of each printing device Using the calibration information prepared for each device, the output image adjusted according to the color reproduction characteristics of each printing device by making adjustments to reduce the variation in color reproduction characteristics in each of the plurality of printing devices
- the plurality of printing apparatuses print the same image based on the output image data adjusted according to the color reproduction characteristics of each printing apparatus. If comprised in this way, the effect similar to the structure 1 can be acquired, for example.
- the image forming apparatus is, for example, a computer provided outside the ink jet printer.
- This computer operates as an image forming apparatus, for example, according to a predetermined program.
- the CPU of the computer operates as each unit of the image forming apparatus according to the program.
- the image forming apparatus may be configured by a plurality of computers.
- FIG. 1 shows an example of the configuration of a printing system 10 that uses a program according to an embodiment of the present invention.
- the printing system 10 is a printing system that performs distributed printing using a plurality of printing apparatuses, and includes a plurality of inkjet printers 12a to 12f, a colorimeter 16, and a PC.
- the plurality of inkjet printers 12a to 12f are printing apparatuses for distributed printing, and each have an inkjet head that ejects ink of each color of CMYK ink. Further, in this example, the ink jet printers 12a to 12f perform printing by a multi-pass method by a scanning operation that reciprocates the ink jet head in a predetermined scanning direction. When performing distributed printing, the inkjet printers 12a to 12f receive output image data adjusted according to the color reproduction characteristics of the respective inkjet printers 12a to 12f from the PC 14, and based on the received output image data, the same image is displayed. Print. This output image data is output data of an image forming process executed by the PC 14.
- the ink jet printers 12a to 12f respectively print preset color charts according to instructions from the PC.
- This calibration information is information used for adjustment of color conversion in the image forming process, for example.
- the plurality of inkjet printers 12a to 12f are, for example, inkjet printers having the same specifications, and perform printing using the same ink.
- This ink is ink for color printing such as each color ink of CMYK ink, for example.
- the color measuring device 16 is, for example, the same or similar color measuring device as a known color measuring device.
- the colorimeter 16 is provided outside the ink jet printers 12a to 12f, and performs color measurement on a color chart printed by each of the plurality of ink jet printers 12a to 12f.
- the PC 14 is a host computer provided outside the inkjet printers 12a to 12f, and operates as an image forming apparatus in the printing system 10 according to a program installed in advance.
- the image forming apparatus of the printing system 10 may be configured by a computer and a database provided outside the computer. Further, it may be constituted by a plurality of computers.
- the PC 14 stores an ICC profile corresponding to the device characteristics of the ink jet printers 12a to 12f, and performs image forming processing based on the ICC profile according to a program.
- this image forming process is a RIP process.
- the PC 14 forms output image data to be transferred to the ink jet printers 12a to 12f.
- the PC 14 receives print data such as a postscript file or PDF file from the outside, and forms output image data corresponding to the print data.
- the PC 14 may form output image data based on print data created using application software on the PC 14.
- the PC 14 acquires the color measurement result obtained by the colorimeter 16, and generates calibration information based on the color measurement result.
- the operation for generating calibration information will also be described in detail later.
- FIG. 2 is a flowchart illustrating an example of the operation of the image forming process performed by the PC 14.
- the PC 14 performs the following operation according to a program installed in advance.
- the PC 14 acquires print data from, for example, an external computer or application software executed on the PC 14 (print data acquisition process S52).
- This print data is, for example, a Postscript file or a PDF file, and an image to be printed is indicated by a color system that does not depend on the color reproduction characteristics of ink used in the inkjet printers 12a to 12f.
- the color of the color system is, for example, an RGB color system.
- This device-dependent color may be a device-dependent color that depends on the color reproduction characteristics of the device that generates the print data.
- the PC 14 generates output image data by converting the print data into output image data (output image generation processing S54).
- the output image generation process S54 is a RIP process, and generates output image data indicating an image in a CMYK color system based on print data.
- the colors of the CMYK color system are colors that depend on the color reproduction characteristics of the CMYK inks used in the ink jet printers 12a to 12f, for example.
- the output image data is, for example, data including raster image data that has been developed and commands that can be interpreted by the ink jet printers 12a to 12f.
- the output image data may be data indicating an image in a printer description language.
- the PC 14 first rasterizes the image indicated by the print data in accordance with the resolution of the ink jet printers 12a to 12f (rasterization process S62). Then, color conversion is performed using a common ICC profile for the plurality of inkjet printers 12a to 12f (device common color conversion processing S64).
- the PC 14 performs two color conversions (first common color conversion process S72 and second common color conversion process S74).
- first common color conversion process S72 the PC 14 performs color conversion using the common first ICC profile for the plurality of inkjet printers 12a to 12f, and converts the device-dependent colors used in the print data to the device Convert to independent color.
- the first ICC profile is, for example, an ICC profile in which a color expressed in the RGB color system is associated with a color expressed in the Lab color system.
- the PC 14 After the common color conversion process S72, in the second common color conversion process S74, the PC 14 performs color conversion using the common second ICC profile for the plurality of ink jet printers 12a to 12f, and performs the first common color conversion process S74.
- the device-independent color after the conversion by the color conversion process is converted into a device-dependent color that depends on the color reproduction characteristics of the ink.
- the second ICC profile is, for example, an ICC profile in which colors expressed in the Lab color system are associated with colors expressed in the CMYK color system.
- the PC 14 performs common color matching for the plurality of inkjet printers 12a to 12f.
- the PC 14 may further perform other processes common to the plurality of ink jet printers 12a to 12f before or after the rasterizing process S62 and the apparatus common color conversion process S64.
- the PC 14 may further perform a rendering process or the like.
- the PC 14 performs individual color conversion adjustment for each of the inkjet printers 12a to 12f (device-specific adjustment processing S66).
- the PC 14 uses the calibration information prepared for each of the inkjet printers 12a to 12f to make adjustments that reduce variations in the color reproduction characteristics of each of the plurality of inkjet printers 12a to 12f. .
- the PC 14 generates output image data adjusted according to the color reproduction characteristics of the respective ink jet printers 12a to 12f as output image data to be sent to the respective ink jet printers 12a to 12f.
- the calibration information is, for example, information that associates colors of the CMYK color system with colors of the CMYK color system, and the CMYK table in the ICC profile used in the second common color conversion process S74.
- the color system color is associated with the color that has been corrected for each of the inkjet printers 12a to 12f.
- the calibration information is prepared for each of the ink jet printers 12a to 12f, for example, according to the color reproduction characteristics of the respective ink jet printers 12a to 12f.
- the PC 14 performs RIP processing based on the print data and generates output image data. Then, the generated output image data is output to the inkjet printer 12 (data output process S56). As a result, the PC 14 causes the inkjet printer 12 to execute a printing operation.
- the color difference caused by individual differences can be appropriately absorbed by the plurality of inkjet printers 12a to 12f.
- This also makes it possible to appropriately reduce variations in color reproduction characteristics among the ink jet printers 12a to 12f, for example. Furthermore, by reducing variations in color reproduction characteristics, for example, distributed printing can be performed appropriately.
- the PC 14 may perform the adjustment process for each device at a timing different from the above.
- the PC 14 may perform the device-by-device adjustment process before the first common color conversion process S72.
- the adjustment processing for each apparatus performs color correction on the data generated by the rasterization process S62.
- the calibration information for example, information for correcting the device-dependent color used in the print data is used. This calibration information associates, for example, the device-dependent color used in the data before the first common color conversion process is performed with the color corrected for each of the inkjet printers 12a to 12f.
- the PC 14 may perform the adjustment process for each apparatus after the first common color conversion process S72 and before the second common color conversion process S74.
- the calibration information for example, information for correcting the device-independent color after the conversion by the first common color conversion process is used.
- the device-independent color after the conversion by the first common color conversion process S72 is associated with the color that has been corrected for each of the inkjet printers 12a to 12f.
- the PC 14 may perform the adjustment process for each device at a plurality of timings, for example.
- the adjustment processing for each device may be performed at two or more timings before the first common color conversion process S72, after the first common color conversion process S72, and after the second common color conversion process S74. Good.
- the PC 14 performs adjustment processing for each device using calibration information corresponding to each timing.
- FIG. 3 is a flowchart illustrating an example of an operation for generating calibration information.
- the PC 14 performs the following operation according to a program installed in advance.
- the PC 14 causes the plurality of inkjet printers 12a to 12f to print the color chart (color chart printing execution process: S102).
- the PC 14 sends common output image data indicating a color chart to each of the plurality of inkjet printers 12a to 12f, and prints the same color chart.
- This color chart is, for example, a color chart including patches of primary colors and high-order colors.
- the PC 14 acquires the colorimetry result by the colorimeter 16 (colorimetry result acquisition process: S104). ). As a result, the PC 14 acquires the color measurement results for the printing results obtained by each of the plurality of inkjet printers 12a to 12f.
- the PC 14 generates a plurality of calibration information corresponding to each of the plurality of inkjet printers 12a to 12f based on the obtained color measurement results (calibration information generation processing: S106).
- the PC 14 calculates the color reproduction characteristics of the respective ink jet printers 12a to 12f based on the color measurement result, for example.
- calibration information for reducing variations in the color reproduction characteristics is generated.
- This variation in color reproduction characteristics is, for example, a variation in color reproduction characteristics that occurs when color conversion is performed using only a common ICC profile.
- the PC 14 After the calibration information generation process S106, the PC 14 stores the generated calibration information in a storage device such as an HDD of the PC 14 (calibration information storage process: S108). In this processing, the PC 14 stores a plurality of calibration information in association with one ICC profile.
- calibration information corresponding to the color reproduction characteristics of the respective ink jet printers 12a to 12f can be appropriately generated. This also makes it possible to appropriately reduce variations in color reproduction characteristics among the ink jet printers 12a to 12f, for example.
- such calibration information can be created easily and appropriately with fewer man-hours than, for example, an ICC profile. Therefore, according to this example, it is possible to appropriately reduce the variation in the color reproduction characteristics for each of the ink jet printers 12a to 12f without taking a lot of man-hours for creating data necessary for color conversion.
- calibration information can be easily created, calibration information can be adjusted and recreated as necessary.
- the user of the inkjet printers 12a to 12f can create calibration information by itself. Further, for example, it is possible to create new calibration information before starting the daily work. Therefore, with this configuration, it is possible to more flexibly reduce variations in color reproduction characteristics for each of the inkjet printers 12a to 12f, for example.
- the PC 14 compares the color chart printed by each of the inkjet printers 12a to 12f with a reference color chart prepared in advance, for example, to obtain calibration information. Generate.
- This reference color chart is, for example, a color chart printed in advance on any of the inkjet printers 12a to 12f.
- a color chart for example, a color chart printed on any one of the ink jet printers 12a to 12f before factory shipment, a color chart printed on a specific day, or the like can be used.
- the PC 14 adjusts the color reproduction characteristics of the other ink jet printers 12a to 12f with reference to the color reproduction characteristics of any of the ink jet printers 12a to 12f.
- the reference inkjet printers 12a to 12f for example, inkjet printers 12a to 12f having the lowest color reproduction characteristics can be used. In this way, the color reproduction characteristics of the other ink jet printers 12a to 12f can be appropriately matched with the reference.
- FIG. 4 shows an example of the configuration of the ICC profile 302 and a plurality of calibration information 304a to 304f.
- the PC 14 stores the ICC profile 302 and a plurality of calibration information 304a to 304f in one color conversion information file 300.
- the PC 14 stores the ICC profile 302 common to the plurality of inkjet printers 12a to 12f and the plurality of calibration information 304a to 304f corresponding to the plurality of inkjet printers 12a to 12f in a single file.
- the ICC profile 302 and the calibration information 304a to 304f can be appropriately managed and used.
- the present invention can be suitably used for a printing system, for example.
- 1 is a diagram illustrating an example of a configuration of a printing system 10 that uses a program according to an embodiment of the present invention.
- 5 is a flowchart illustrating an example of an image forming process performed by the PC. It is a flowchart which shows an example of the operation
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Abstract
Description
(構成1)インクジェット方式で印刷を行う複数の印刷装置で印刷される画像を示すデータである出力画像データを形成する画像形成処理をコンピュータに行わせるプログラムであって、印刷装置で使用されるインクによる色再現特性に依存しない表色系の色で画像を示す印刷データを取得する印刷データ取得処理と、印刷装置で使用されるインクによる色再現特性に依存する色で画像を示す出力画像データへ印刷データを変換することにより、出力画像データを生成する出力画像生成処理と、生成した出力画像データを複数の印刷装置へ出力するデータ出力処理とをコンピュータに行わせ、出力画像生成処理は、印刷データが示す画像を印刷装置の解像度に合わせてラスタライズするラスタライズ処理と、複数の印刷装置に対して共通の一のICCプロファイルを用いることにより複数の印刷装置に対して共通の色変換を行う装置共通色変換処理と、それぞれの印刷装置の色再現特性に応じて印刷装置毎に準備されたキャリブレーション情報を用いて、複数の印刷装置のそれぞれにおける色再現特性のばらつきを低減させる調整を行うことにより、それぞれの印刷装置の色再現特性に応じて調整された出力画像データを生成する装置毎調整処理とを有し、複数の印刷装置は、それぞれの印刷装置の色再現特性に応じて調整された出力画像データに基づき、同じ画像を印刷する。
Claims (7)
- インクジェット方式で印刷を行う複数の印刷装置で印刷される画像を示すデータである出力画像データを形成する画像形成処理をコンピュータに行わせるプログラムであって、
前記印刷装置で使用されるインクによる色再現特性に依存しない表色系の色で前記画像を示す印刷データを取得する印刷データ取得処理と、
前記印刷装置で使用されるインクによる色再現特性に依存する色で前記画像を示す前記出力画像データへ前記印刷データを変換することにより、前記出力画像データを生成する出力画像生成処理と、
生成した前記出力画像データを前記複数の印刷装置へ出力するデータ出力処理と
を前記コンピュータに行わせ、
前記出力画像生成処理は、
前記印刷データが示す画像を前記印刷装置の解像度に合わせてラスタライズするラスタライズ処理と、
前記複数の印刷装置に対して共通の一のICCプロファイルを用いることにより複数の前記印刷装置に対して共通の色変換を行う装置共通色変換処理と、
それぞれの前記印刷装置の色再現特性に応じて前記印刷装置毎に準備されたキャリブレーション情報を用いて、前記複数の印刷装置のそれぞれにおける色再現特性のばらつきを低減させる調整を行うことにより、前記それぞれの印刷装置の色再現特性に応じて調整された前記出力画像データを生成する装置毎調整処理と
を有し、
前記複数の印刷装置は、それぞれの前記印刷装置の色再現特性に応じて調整された前記出力画像データに基づき、同じ前記画像を印刷することを特徴とするプログラム。 - 予め設定されたカラーチャートを前記複数の印刷装置に印刷させるカラーチャート印刷実行処理と、
印刷された前記カラーチャートを測色器で測定した測色結果を取得することにより、前記複数の印刷装置のそれぞれによる印刷結果に対する前記測色結果を取得する測色結果取得処理と、
前記複数の印刷装置のそれぞれに対応する前記キャリブレーション情報を、それぞれの前記印刷装置に対応する前記測色結果に基づいて生成するキャリブレーション情報生成処理と
を更に前記コンピュータに実行させることを特徴とする請求項1に記載のプログラム。 - 前記出力画像生成処理は、前記印刷データに基づいて前記出力画像データを形成するRIP(Raster Image Processor)処理であり、
前記印刷データにおいて使用される色は、所定のデバイスの色再現特性に依存するデバイス依存色であり、
前記装置共通色変換処理は、
前記複数の印刷装置に対して共通の第1のICCプロファイルを用いる色変換処理であり、前記印刷データに用いられている前記デバイス依存色を、デバイス非依存色に変換する第1共通色変換処理と、
前記複数の印刷装置に対して共通の第2のICCプロファイルを用いる色変換処理であり、前記第1共通色変換処理による変換後の前記デバイス非依存色を、前記インクによる色再現特性に依存するデバイス依存色に変換する第2共通色変換処理と
を含み、
それぞれの前記印刷装置は、少なくともCMYKインクの各色のインクを吐出するインクジェットヘッドを有し、
前記装置毎調整処理は、前記第2共通色変換処理の後に行われる処理であり、
前記キャリブレーション情報は、CMYK表色系の色と、CMYK表色系の色とを対応付ける情報であり、前記第2共通色変換処理で用いられる前記ICCプロファイルにおけるCMYK表色系の色を、それぞれの前記印刷装置毎の補正を行った色に対応付けることを特徴とする請求項1又は2に記載のプログラム。 - 前記出力画像生成処理は、前記印刷データに基づいて前記出力画像データを形成するRIP(Raster Image Processor)処理であり、
前記印刷データにおいて使用される色は、所定のデバイスの色再現特性に依存するデバイス依存色であり、
前記装置共通色変換処理は、
前記複数の印刷装置に対して共通の第1のICCプロファイルを用いる色変換処理であり、前記印刷データに用いられている前記デバイス依存色を、デバイス非依存色に変換する第1共通色変換処理と、
前記複数の印刷装置に対して共通の第2のICCプロファイルを用いる色変換処理であり、前記第1共通色変換処理による変換後の前記デバイス非依存色を、前記インクによる色再現特性に依存するデバイス依存色に変換する第2共通色変換処理と
を含み、
前記装置毎調整処理は、前記第1共通色変換処理の前に行われる処理であり、
前記キャリブレーション情報は、前記印刷データに用いられている前記デバイス依存色を補正する情報であり、前記第1共通色変換処理が行われる前の当該デバイス依存色を、それぞれの前記印刷装置毎の補正を行った色に対応付けることを特徴とする請求項1から3のいずれかに記載のプログラム。 - 前記出力画像生成処理は、前記印刷データに基づいて前記出力画像データを形成するRIP(Raster Image Processor)処理であり、
前記印刷データにおいて使用される色は、所定のデバイスの色再現特性に依存するデバイス依存色であり、
前記装置共通色変換処理は、
前記複数の印刷装置に対して共通の第1のICCプロファイルを用いる色変換処理であり、前記印刷データに用いられている前記デバイス依存色を、デバイス非依存色に変換する第1共通色変換処理と、
前記複数の印刷装置に対して共通の第2のICCプロファイルを用いる色変換処理であり、前記第1共通色変換処理による変換後の前記デバイス非依存色を、前記インクによる色再現特性に依存するデバイス依存色に変換する第2共通色変換処理と
を含み、
前記装置毎調整処理は、前記第1共通色変換処理の後で、かつ、前記第2共通色変換処理の前に行われる処理であり、
前記キャリブレーション情報は、前記第1共通色変換処理による変換後の前記デバイス非依存色を補正する情報であり、前記第1共通色変換処理による変換後の前記デバイス非依存色を、それぞれの前記印刷装置毎の補正を行った色に対応付けることを特徴とする請求項1から4のいずれかに記載のプログラム。 - インクジェット方式で印刷を行う複数の印刷装置で印刷される画像を示すデータである出力画像データを形成する画像形成方法であって、
前記印刷装置で使用されるインクによる色再現特性に依存しない表色系の色で前記画像を示す印刷データを取得する印刷データ取得段階と、
前記印刷装置で使用されるインクによる色再現特性に依存する色で前記画像を示す前記出力画像データへ前記印刷データを変換することにより、前記出力画像データを生成する出力画像生成段階と、
生成した前記出力画像データを前記複数の印刷装置へ出力するデータ出力段階と
を備え、
前記出力画像生成段階は、
前記印刷データが示す画像を前記印刷装置の解像度に合わせてラスタライズするラスタライズ段階と、
前記複数の印刷装置に対して共通の一のICCプロファイルを用いることにより複数の前記印刷装置に対して共通の色変換を行う装置共通色変換段階と、
それぞれの前記印刷装置の色再現特性に応じて前記印刷装置毎に準備されたキャリブレーション情報を用いて、前記複数の印刷装置のそれぞれにおける色再現特性のばらつきを低減させる調整を行うことにより、前記それぞれの印刷装置の色再現特性に応じて調整された前記出力画像データを生成する装置毎調整段階と
を有し、
前記複数の印刷装置は、それぞれの前記印刷装置の色再現特性に応じて調整された前記出力画像データに基づき、同じ前記画像を印刷することを特徴とする画像形成方法。 - インクジェット方式で印刷を行う複数の印刷装置と、前記印刷装置で印刷される画像を示すデータである出力画像データを形成する画像形成処理を行う画像形成処理装置とを備える印刷システムであって、
前記画像形成装置は、
前記印刷装置で使用されるインクによる色再現特性に依存しない表色系の色で前記画像を示す印刷データを取得する印刷データ取得処理部と、
前記印刷装置で使用されるインクによる色再現特性に依存する色で前記画像を示す前記出力画像データへ前記印刷データを変換することにより、前記出力画像データを生成する出力画像生成処理部と、
生成した前記出力画像データを前記複数の印刷装置へ出力するデータ出力処理部と
を備え、
前記出力画像生成部は、
前記印刷データが示す画像を前記印刷装置の解像度に合わせてラスタライズするラスタライズ処理部と、
前記複数の印刷装置に対して共通の一のICCプロファイルを用いることにより複数の前記印刷装置に対して共通の色変換を行う装置共通色変換処理部と、
それぞれの前記印刷装置の色再現特性に応じて前記印刷装置毎に準備されたキャリブレーション情報を用いて、前記複数の印刷装置のそれぞれにおける色再現特性のばらつきを低減させる調整を行うことにより、前記それぞれの印刷装置の色再現特性に応じて調整された前記出力画像データを生成する装置毎調整処理部と
を有し、
前記複数の印刷装置は、それぞれの前記印刷装置の色再現特性に応じて調整された前記出力画像データに基づき、同じ前記画像を印刷することを特徴とする印刷システム。
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2009
- 2009-01-14 CN CN2009801389809A patent/CN102171052A/zh active Pending
- 2009-01-14 EP EP09838291A patent/EP2319698A4/en not_active Withdrawn
- 2009-01-14 JP JP2010546503A patent/JPWO2010082321A1/ja active Pending
- 2009-01-14 KR KR1020117007494A patent/KR20110061602A/ko not_active Application Discontinuation
- 2009-01-14 WO PCT/JP2009/050381 patent/WO2010082321A1/ja active Application Filing
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2011
- 2011-03-29 US US13/074,028 patent/US20110221799A1/en not_active Abandoned
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JP2002152545A (ja) * | 2000-08-08 | 2002-05-24 | Canon Inc | カラー画像処理方法、装置および記録媒体 |
JP2004046339A (ja) | 2002-07-09 | 2004-02-12 | Seiko Epson Corp | 複数の印刷装置の制御 |
JP2004234391A (ja) | 2003-01-30 | 2004-08-19 | Kyocera Mita Corp | カラー画像分散印刷システム及びその方法 |
JP2007137013A (ja) | 2005-11-22 | 2007-06-07 | Fuji Xerox Co Ltd | 印刷装置及びそのキャリブレーション方法 |
Cited By (3)
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JP2012169888A (ja) * | 2011-02-15 | 2012-09-06 | Konica Minolta Business Technologies Inc | 色調整方法及び画像形成システム |
JP2020170417A (ja) * | 2019-04-05 | 2020-10-15 | ローランドディー.ジー.株式会社 | プリンタのカラーキャリブレーションシステム |
JP7265914B2 (ja) | 2019-04-05 | 2023-04-27 | ローランドディー.ジー.株式会社 | プリンタのカラーキャリブレーションシステム |
Also Published As
Publication number | Publication date |
---|---|
JPWO2010082321A1 (ja) | 2012-06-28 |
CN102171052A (zh) | 2011-08-31 |
EP2319698A4 (en) | 2012-04-04 |
US20110221799A1 (en) | 2011-09-15 |
EP2319698A1 (en) | 2011-05-11 |
KR20110061602A (ko) | 2011-06-09 |
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