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Patent Searching and Data


Title:
IMAGE PROCESSING METHOD, IMAGE PROCESSING APPARATUS, AND RECORDING APPARATUS
Document Type and Number:
Japanese Patent JP2004042456
Kind Code:
A
Abstract:

To provide an image processing method which can promptly and correctly correct density irregularities caused by characteristics of nozzles, and to provide an image processing apparatus and a recording apparatus.

A test pattern is recorded by forming dots to non-adjacent positions on a record medium by adjacent recording elements of a recording head. A density of dots formed in the test pattern is read, and a position of dots to be formed by each recording element is obtained on the basis of the dot density. A distance of dots to be formed to adjacent positions by adjacent recording elements is obtained on the basis of the density and position of each dot. A correction coefficient related to a correcting process of image data is calculated from the distance of dots to be formed to adjacent positions by adjacent recording elements, and the density of each dot.


Inventors:
ANDO YUJIRO
YAMADA SATORU
YUMOTO CHIHARU
Application Number:
JP2002203234A
Publication Date:
February 12, 2004
Filing Date:
July 11, 2002
Export Citation:
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Assignee:
CANON KK
CANON FINETECH INC
International Classes:
B41J2/01; B41J29/46; H04N1/23; H04N1/407; (IPC1-7): B41J2/01; B41J29/46; H04N1/23; H04N1/407
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe