# US 2021/0243336 A1 · Image processing apparatus, image processing method, and program

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- Number: US 2021/0243336 A1
- Document ID: US20210243336A1
- Status: Published application
- Kind: A1
- Application number: 17/236,819
- Filed: 2021-04-21
- Published: 2021-08-05
- Earliest claimed: 2012-11-29
- Assignees: Canon Kabushiki Kaisha
- Applicants: Canon Kabushiki Kaisha
- Inventors: Hideo Sato
- Web page: https://patentgrep.com/patent/US20210243336A1

## CPC

- H04N 1/6033: {using test pattern analysis (H04N1/6055 takes precedence)}
- G06K 15/027: {Test patterns and calibration (arrangements for controlling or analysing printing mechanisms of typewriters or selective printing units B41J29/393 takes precedence; colour correction using test pattern analysis in general H04N1/6033)}
- G06K 15/129: {Colour printing}
- G06K 15/1868: {for fitting to an output condition, e.g. paper colour or format}
- H04N 1/00034: {Measuring, i.e. determining a quantity by comparison with a standard (H04N1/00031 takes precedence)}
- H04N 1/00087: {Setting or calibrating (picture signal circuits H04N1/40)}
- H04N 1/00092: {relating to the original or to the reproducing medium, e.g. imperfections or dirt (detecting properties of a sheet H04N1/00681)}
- H04N 1/6038: {for controlling interaction among colorants}
- H04N 1/6097: {depending on the characteristics of the output medium, e.g. glossy paper, matt paper, transparency or fabrics}
- H04N 2201/0094: Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS

## Abstract

An image processing apparatus includes a control unit configured to control execution of monochromatic calibration and multi-color calibration, and a registration unit configured to register paper types of paper to be used at time of execution of the monochromatic calibration, a monochromatic target value set for each of the paper types used for the monochromatic calibration, paper types of paper to be used at time of execution of multi-color calibration, and a multi-color target value set for each of the paper types used for the multi-color calibration. The image processing apparatus executes the multi-color calibration, after executing the monochromatic calibration, via the control unit by using paper of a paper type selected from common paper types out of the registered paper types and the monochromatic target value and the multi-color target value set for the selected paper type.

## Claims

### Claim 1

An image processing apparatus comprising:
a display;
an image forming unit configured to form a color image using recording materials;
a selection unit configured to select a sheet cassette via the display;
a first processing unit configured to execute a first calibration, the first calibration being executed by measurements of a plurality of monochromatic images including at least monochromatic images of a first color and monochromatic images of a second color and generating, using measurement results, monochromatic calibration data, wherein each of the monochromatic images of the first color is formed using only a first color recording material by the image forming unit on a sheet stored in the sheet cassette selected by the selection unit, each of the monochromatic images of the second color is formed using only a second color recording material by the image forming unit on the sheet; and
a second processing unit configured to execute a second calibration following execution of the first calibration, the second calibration being executed by measurements of a plurality color images and generating, using measurement results, multi-color calibration data, wherein each of the plurality of multi-color patch images is formed using a plurality of color recording materials by the image forming unit on a sheet stored in the sheet cassette selected by the selection unit and at least one color image of the plurality of color images is a chromatic color image which is formed using only the first color recording material and the second color recording material.