Information processing device, information processing method, and computer-readable recording medium

Patent metadata

Field	Value
Publication number	US-10460217-B2
Application number	US-201815921697-A
Country	US
Kind code	B2
Filing date	Mar 15, 2018
Priority date	Mar 16, 2017
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

A specification part of an information processing device specifies, by using image data for a correction chart defining a plurality of patch regions having different color values, a target characteristic indicating a relation between the color value and a first colorimetric value of a first patch image as a laminated image of a special color image and a colored image that correspond to each of the patch regions formed by the device through the 2-path printing. A generation part of the device generates a correction table for correcting the color value so that a measured characteristic comes close to the target characteristic, the measured characteristic indicating a relation between the color value and a second colorimetric value of a second patch image as the laminated image corresponding to each of the patch regions formed by the device through the 1-path printing using the image data for a correction chart.

First claim

What is claimed is:

1. An information processing device configured to control an image forming part that forms a laminated image of a special color image using a special color material and a colored image using a colored color material through 2-path printing in which one of the special color image and the colored image is formed on a medium to be immobilized and the other one is laminated thereon, or 1-path printing in which one of the special color image and the colored image is formed on a medium and the other one is laminated thereon without performing immobilization, the information processing device comprising:
a specification part configured to specify, by using image data for a correction chart defining a plurality of patch regions having different color values, a target characteristic indicating a relation between the color value and a first colorimetric value of a first patch image as the laminated image corresponding to each of the patch regions formed by the image forming part through the 2-path printing; and
a generation part configured to generate a correction table for correcting the color value so that a measured characteristic comes close to the target characteristic, the measured characteristic indicating a relation between the color value and a second colorimetric value of a second patch image as the laminated image corresponding to each of the patch regions formed by the image forming part through the 1-path printing using the image data for a correction chart.

2. The information processing device according to claim 1 , wherein
the generation part generates the correction table in which the color value in the target characteristic is set to be an input color value and the color value in the measured characteristic corresponding to the second colorimetric value indicating the first colorimetric value in the target characteristic is set to be an output color value.

3. The information processing device according to claim 1 , further comprising:
an acquisition part configured to acquire special color type information indicating a type of the special color material used for image formation; and
a determination part configured to determine the image data for a correction chart corresponding to the special color type information, wherein
the specification part determines the target characteristic using the determined image data for a correction chart, and
the generation part generates the correction table using the determined image data for a correction chart.

4. The information processing device according to claim 3 , wherein
the determination part determines the image data for a correction chart defining the patch region in which the special color region and the colored region are laminated with the color value including a special color value and a colored color value, the image data for a correction chart including image data for a special color correction chart defining the special color value of the special color region using the special color material of the type indicated by the special color type information and image data for a colored correction chart defining the colored color value of the colored region using the colored color material.

5. The information processing device according to claim 3 , wherein
the image forming part is configured to be able to switch a laminating order of the colored image and the special color image with respect to a medium,
the acquisition part acquires laminating order information indicating the laminating order from the image forming part,
the specification part specifies, by using the determined image data for a correction chart, the target characteristic indicating a relation between the color value and the first colorimetric value of the first patch image that is formed on a medium through the 2-path printing by the image forming part in the laminating order indicated by the acquired laminating order information using the special color material of the type indicated by the acquired special color type information, and
the generation part generates the correction table so that a measured characteristic is matched with the target characteristic using the determined image data for a correction chart, the measured characteristic indicating a relation between the color value and the second colorimetric value of the second patch image formed on a medium through the 1-path printing by the image forming part in the acquired laminating order with the special color material of the type indicated by the acquired special color type information.

6. The information processing device according to claim 1 , further comprising:
a correction part configured to correct a color value of image data as a formation target using the correction table; and
a transmission part configured to transmit the corrected image data to the image forming part.

7. The information processing device according to claim 1 , wherein
the special color material is a color material indicating any of a metal color, white, a transparent color, and a fluorescent color.

8. The information processing device according to claim 1 , further comprising:
a rectification part configured to rectify an output color value in a rectification range from a predetermined rectification color value to a maximum color value in the correction table to be the output color value that monotonically increases.

9. The information processing device according to claim 8 , wherein
the rectification part comprises:
a color value specification part configured to specify an input color value corresponding to the output color value indicating the rectification color value in the correction table;
a characteristic generation part configured to interpolate between a first point indicating a colorimetric value at the time when an image of the rectification color value is formed on a medium through the 1-path printing by the image forming part in the target characteristic and a second point indicating a maximum color value in the measured characteristic to generate a rectification characteristic indicating a relation between the colorimetric value and the color value; and
a color value rectification part configured to rectify the output color value in the rectification range in the correction table to be the color value corresponding to the second colorimetric value indicating the calorimetric value in the rectification characteristic in the measured characteristic.

10. The information processing device according to claim 8 , wherein
the rectification color value is smaller than the color value in the target characteristic corresponding to the first calorimetric value indicating the second colorimetric value of a maximum color value in the measured characteristic.

11. The information processing device according to claim 8 , wherein
the rectification color value is a color value obtained by subtracting a difference between the color value and the maximum color value in the measured characteristic from the color value in the target characteristic corresponding to the first colorimetric value indicating the second colorimetric value of the maximum color value in the measured characteristic.

12. The information processing device according to claim 8 , wherein
the rectification color value becomes smaller as a difference between the first colorimetric value corresponding to the maximum color value in the target characteristic and the second colorimetric value corresponding to the maximum color value in the measured characteristic becomes larger.

13. The information processing device according to claim 8 , wherein
the rectification color value becomes smaller a

Assignees

• Sagimori Yuuki
• WATANABE Akiho
• Ricoh Co Ltd

Inventors

• Sagimori Yuuki
• WATANABE Akiho

Classifications

• G06K2215/0094

  Colour printing · CPC title

• G03G2215/00063

  Colour · CPC title

• G03G15/6585

  by using non-standard toners, e.g. transparent toner, gloss adding devices · CPC title

• G06K15/1878

  Adjusting colours (image colour correction or control for documents in general H04N1/60) · CPC title

• G03G15/01

  for producing multicoloured copies · CPC title