Patent ID: 11936835
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 10:
11. The image printing apparatus according to claim 1, further comprising a Head-Shading (HS) processing unit configured
to convert a color signal corresponding to the first chromatic ink to be printed in the first area converted by the conversion unit and a color signal corresponding to the first chromatic ink to be printed in the second area converted by the conversion unit in such a way as to reduce a difference between a density of an image which is printed in the first area by the first chromatic ink being discharged with use of only the first nozzle group in a case where a first color signal corresponding to the first chromatic ink is input and a density of an image which is printed in the second area by the first chromatic ink being discharged with use of only the fifth nozzle group in a case where the first color signal corresponding to the first chromatic ink is input,
to convert a color signal corresponding to the second chromatic ink to be printed in the first area converted by the conversion unit and a color signal corresponding to the second chromatic ink to be printed in the second area converted by the conversion unit in such a way as to reduce a difference between a density of an image which is printed in the first area by the second chromatic ink being discharged with use of only the second nozzle group in a case where a second color signal corresponding to the second chromatic ink is input and a density of an image which is printed in the second area by the second chromatic ink being discharged with use of only the sixth nozzle group in a case where the second color signal corresponding to the second chromatic ink is input,
to convert a color signal corresponding to the third chromatic ink to be printed in the first area converted by the conversion unit and a color signal corresponding to the third chromatic ink to be printed in the second area converted by the conversion unit in such a way as to reduce a difference between a density of an image which is printed in the first area by the third chromatic ink being discharged with use of only the third nozzle group in a case where a third color signal corresponding to the third chromatic ink is input and a density of an image which is printed in the second area by the third chromatic ink being discharged with use of only the seventh nozzle group in a case where the third color signal corresponding to the third chromatic ink is input, and
to convert a color signal corresponding to the achromatic ink to be printed in the first area converted by the conversion unit and a color signal corresponding to the achromatic ink to be printed in the second area converted by the conversion unit in such a way as to reduce a difference between a density of an image which is printed in the first area by the achromatic ink being discharged with use of only the fourth nozzle group in a case where a fourth color signal corresponding to the achromatic ink is input and a density of an image which is printed in the second area by the achromatic ink being discharged with use of only the eighth nozzle group in a case where the fourth color signal corresponding to the achromatic ink is input.