Title:
インクジェット記録装置
Document Type and Number:
Japanese Patent JP4387768
Kind Code:
B2
Abstract:
There is provided an ink jet printing apparatus that suppresses density unevenness caused by a difference in print time resulting from printing based on a bidirectional multi-pass printing system. With a relatively small print medium width, the time difference unevenness does not occur even in 2 pass printing. Accordingly, the 2 pass printing is selected. With a relatively large print medium width, selection of the 2 pass printing may make the density unevenness significant. Accordingly, the density unevenness is suppressed by selecting 8 pass printing. That is, in the 8 pass printing, the same area is scanned eight times, which is four times as frequent as the twice in the 2 pass printing. This reduces the size of each area having different densities, while increasing a cycle frequency at which a high and low densities are alternately repeated. As a result, the time difference unevenness is not perceived easily.
Inventors:
Katsushi Hara
Application Number:
JP2003385747A
Publication Date:
December 24, 2009
Filing Date:
November 14, 2003
Export Citation:
Assignee:
Canon Inc
International Classes:
B41J2/01; B41J2/21; B41J11/00; B41J19/14
Domestic Patent References:
| JP2003034021A | ||||
| JP2001347653A | ||||
| JP7047695A | ||||
| JP6024007A | ||||
| JP2001038888A | ||||
| JP2001063014A | ||||
| JP8039793A | ||||
| JP6022106A |
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe