Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshinori Nakagawa0
Osamu Iwasaki0
Satoshi Seki0
Tetsuya Edamura0
Hitoshi Nishikori0
Kiichiro Takahashi0
Minoru Teshigawara0
Naoji Otsuka0
Date of Patent
November 24, 2009
Patent Application Number
10864356
Date Filed
June 10, 2004
Patent Primary Examiner
Patent abstract
In an ink jet printing apparatus using many types of inks to execute bidirectional printing, if ejection opening rows for yellow, magenta, and cyan inks are symmetrically arranged, ejection opening rows for a black ink are arranged adjacent to the most inside ejection opening rows for the yellow ink. Thus, a difference in color between forward scanning and backward scanning is determined by a difference in coloring between the black ink and the yellow ink. In this case, a possible color drift attributed to bidirectional printing can be suppressed by selecting the inks so that the difference in coloring between the black ink and the yellow ink is smaller than that between the black ink and the other color inks.
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