Image forming apparatus, control method thereof, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorsYukihiro Shindo, Hidekazu Nakashio
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Abstract
An object is to match the texture of a printed material, in addition to the tint, between different printing devices. In order to implement this object, a printed material output by a destination device is scanned and whether a certain area in image data obtained by the scan is an area printed in K color on the printed material or an area printed in CMY color mixture is determined. Then, based on the determination results, a printing parameter is determined.
Claims11
An image forming apparatus comprising:
- a printing unit configured to print an image on a sheet,
- a scan unit configured to scan a first sheet on which another image forming apparatus has printed a first object of a gray color and configured to scan a second sheet on which the printing unit has printed a second object;
- a determination unit configured to determine a gray characteristic of the first object based on first image data generated by the scan of the first sheet, the gray characteristic indicating whether the gray color of the first object on the scanned first sheet is a gray color represented with only a color material of K (black) or with color materials including a color material of C (cyan), a color material of M (magenta), and a color material of Y (yellow);
- and
- a control unit configured to perform a color matching process, the color matching process being based on the first image data, second image data generated by the scan of the second sheet, and the gray characteristic determined by the determination unit, wherein the color matching process comprises matching between a color characteristic of the printing unit and a color characteristic of the other image forming apparatus.
A control method of an image forming apparatus having a printing unit configured to print an image on a sheet, the control method comprising the steps of:
- scanning a first sheet on which another image forming apparatus has printed a first object of a gray color;
- scanning a second sheet on which the printing unit has printed a second object;
- determining a gray characteristic of the first object based on first image data generated by the scan of the first sheet, the gray characteristic indicating whether the gray color of the first object on the scanned first sheet is a gray color represented with only a color material of K (black) or with color materials including a color material of C (cyan), a color material of M (magenta), and a color material of Y (yellow);
- and
- performing a color matching process, the color matching process being based on the first image data, second image data generated by the scan of the second sheet, and the gray characteristic determined by the determining step, wherein the color matching process comprises matching between a color characteristic of the printing unit and a color characteristic of the other image forming apparatus.
A non-transitory computer readable storage medium storing a program for causing a computer to perform a control method of an image forming apparatus having a printing unit configured to print an image on a sheet, the control method comprising the steps of:
- scanning a first sheet on which another image forming apparatus has printed a first object of a gray color;
- scanning a second sheet on which the printing unit has printed a second object;
- determining a gray characteristic of the first object based on first image data generated by the scan of the first sheet, the gray characteristic indicating whether the gray color of the first object on the scanned first sheet is a gray color represented with only a color material of K (black) or with color materials including a color material of C (cyan), a color material of M (magenta), and a color material of Y (yellow);
- and
- performing a color matching process, the color matching process being based on the first image data, second image data generated by the scan of the second sheet, and the gray characteristic determined by the determining step, wherein the color matching process comprises matching between a color characteristic of the printing unit and a color characteristic of the other image forming apparatus.
Dependencies are inferred from the claim text.