Image processing apparatus and image processing method for suppressing image degradation caused by a printing position fluctuation

Patent metadata

Field	Value
Publication number	US-8941844-B2
Application number	US-201213670751-A
Country	US
Kind code	B2
Filing date	Nov 7, 2012
Priority date	Nov 25, 2011
Publication date	Jan 27, 2015
Grant date	Jan 27, 2015

Abstract

The invention provides a technique which allows high-quality printing. An image processing apparatus for forming an image by executing N printing scans for a single region on a printing medium, comprises: a readout unit configured to read out image data of a region corresponding to a k-th printing scan from input image data; a print data generation unit configured to generate print data from the image data by halftone processing; and an obtaining unit configured to obtain position fluctuation information of dots in a preceding printing scan, wherein the readout unit controls a readout position of the region corresponding to the k-th printing scan in accordance with the position fluctuation information at the time of the preceding printing scan obtained by the obtaining unit.

First claim

What is claimed is:

1. An image processing apparatus for forming an image by executing N (N is an integer not less than 2) printing scans for a single region on a printing medium comprising:
a readout unit configured to read out image data of a region corresponding to a printing scan of interest from input image data;
a print data generation unit configured to generate print data which is used in the printing scan of interest and has the number of tones smaller than the number o…

Assignees

• Canon Kk

Inventors

• Kodama Shigeo
• Ishikawa Hisashi

Classifications

• H04N1/506 Primary

  Electricity · mapped topic

• H04N1/405

  Electricity · mapped topic

• G06K15/105

  Physics · mapped topic