Color chart, information processing apparatus, and information processing system

Patent metadata

Field	Value
Publication number	US-12063328-B2
Application number	US-202117504872-A
Country	US
Kind code	B2
Filing date	Oct 19, 2021
Priority date	Oct 28, 2020
Publication date	Aug 13, 2024
Grant date	Aug 13, 2024

Abstract

A color chart is for evaluating printing quality of an image forming apparatus. The color chart includes identification information and a color evaluation patch. The identification information is on an image forming apparatus on which evaluation of printing quality is to be performed. The color evaluation patch includes a plurality of color patches for performing evaluation of printing quality on the image forming apparatus indicated by the identification information.

First claim

What is claimed is:

1. A color chart for evaluating printing quality of an image forming apparatus, the color chart comprising:
a plurality of color charts output from the image forming apparatus;
a color code including
color patches of a plurality of colors,
identification in on an image forming apparatus on which evaluation of printing quality is to be performed, and
page information indicating a color chart of the plurality of color charts; and

a color evaluation patch including a plurality of color patches for performing evaluation of printing quality on the image forming apparatus indicated by the identification information.

2. The color chart according to claim 1 , wherein the color code further includes information on a paper type of a sheet on which the color chart is output.

3. The color chart according to claim 1 , wherein the color evaluation patch and the color code are arranged at mutually independent positions.

4. The color chart according to claim 1 , wherein the color evaluation patch includes a plurality of determination patches for determining whether printing quality of the color chart is abnormal.

5. The color chart according to claim 4 , wherein the plurality of determination patches each include one of a plurality of color patch groups having a same arrangement and arranged in different arrangement directions.

6. An information processing apparatus comprising:
processing circuitry configured to,
acquire color information data generated by reading, by an image reading apparatus, a color chart output from an image forming apparatus, the color chart including
a plurality of color charts output from the image forming apparatus,
identification information on the image forming apparatus on which evaluation of printing quality is to be performed, the identification information included in a color code, the color code including
color patches of a plurality of colors, and
page information on the color chart, and

a color evaluation patch including a plurality of color patches for performing evaluation of printing quality on the image forming apparatus,

identify at least the image forming apparatus and the page information from the color code included in the color information data of each of the plurality of color charts,
determine whether the printing quality of the image forming apparatus is abnormal, based on a color measurement value of the color evaluation patch, and
determine presence or absence of color variation between the plurality of color charts each identified by one of piece of page information corresponding to the same image forming apparatus, based on color measurement values of color evaluation patches in color information data with respect to the pieces of page information.

7. The information processing apparatus according to claim 6 , wherein
the processing circuitry is configured to identify the image forming apparatus from the color code included in the color information data.

8. The information processing apparatus according to claim 7 , wherein
the color code further includes information on a paper type of a sheet on which the color chart is output, and
the processing circuitry is configured to
identify the image forming apparatus and the paper type from the color code, and
determine whether printing quality of the image forming apparatus with respect to the paper type is abnormal, based on a color measurement value of the color evaluation patch included in the color information data.

9. The information processing apparatus according to claim 7 , wherein
the color evaluation patch includes a plurality of determination patches for determining whether printing quality of the color chart is abnormal, and
the processing circuitry is configured to determine whether the printing quality of the image forming apparatus is abnormal, based on color measurement values of the plurality of determination patches included in the color information data.

10. The information processing apparatus according to claim 7 , wherein
the processing circuitry is configured to rotate the color information data in accordance with arrangement of color patches of fixed colors in the color code included in the color information data.

11. The information processing apparatus according to claim 9 , wherein
the plurality of determination patches each include one of a plurality of color patch groups having a same arrangement and arranged in different arrangement directions,
the processing circuitry is configured to
calculate average values of color measurement values of color patches at corresponding positions in the plurality of determination patches, and
determine whether the printing quality of the image forming apparatus is abnormal, based on the average values.

12. The information processing apparatus according to claim 11 , wherein the processing circuitry is configured to cause a display device to display a chronological graph of one of an average value, of the average values of color measurement values, or a value based on the average value.

13. The information processing apparatus according to claim 6 , wherein the processing circuitry is configured to cause a display device to display an abnormality in response determining that the abnormality is present.

14. An information processing system comprising:
an image forming apparatus on which evaluation of printing quality is to be performed, the image forming apparatus configured to
output a plurality of color charts including identification information on the image forming apparatus, the identification information included in a color code including, the color code including
color patches of a plurality of colors, and
page information on a color chart of the plurality of color charts, and

output a color evaluation patch including a plurality of color patches for performing evaluation of printing quality on the image forming apparatus;

an image reading apparatus configured to read the color chart output by the image forming apparatus, to generate color information data; and
an information processing apparatus including processing circuitry configured to:
acquire the color information data generated by the image reading apparatus;
identify at least the image forming apparatus and the page information from the color code included in the color information data of each of the plurality of color charts;
determine whether the printing quality of the image forming apparatus is abnormal, based on a color measurement value of the color evaluation patch included in the color information data; and
determine presence or absence of color variation between the plurality of color charts each identified by one of piece of page information corresponding to the same image forming apparatus, based on color measurement values of color evaluation patches in color information data with respect to the pieces of page information.

15. The color chart according to claim 1 , wherein the color patches of the color code are arranged so as not to have a same color as a color of an adjacent color patch.

16. The information processing apparatus according to claim 6 , wherein the color patches of the color code are arranged so as not to have a same color as a color of an adjacent color patch.

17. The information processing system according to claim 14 , wherein the color patches of the color code are arranged so as not to have a same color as a color of an adjacent color patch.

18. The color chart according to claim 1 , wherein a first color patch of the plurality of color

Assignees

• Kihara Hideyuki
• Taneda Yusuke
• NAGATA Yuta
• Ricoh Co Ltd

Inventors

• Kihara Hideyuki
• Taneda Yusuke
• NAGATA Yuta

Classifications

• H04N1/00034

  Measuring, i.e. determining a quantity by comparison with a standard (H04N1/00031 takes precedence) · CPC title

• H04N1/00015

  Reproducing apparatus · CPC title

• H04N1/00013

  Reading apparatus · CPC title

• G06F3/1259

  Print job monitoring, e.g. job status · CPC title

• G06F3/121

  Facilitating exception or error detection and recovery, e.g. fault, media or consumables depleted · CPC title