| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem wherein the number of gradation reproducible is remarkably decreased by a method for correcting largely the value of gradation by a gradation correcting part. SOLUTION: In an information storing part of a liquid delivering head expressing one pixel with a number of liquid droplets generated, selective information of a boundary value table for diffusing multi-value errors is stored for every delivering condition. When a liquid delivering head is mounted, the selective information matching the delivering condition is read, and the boundary value table corresponding to the selective information is set for referring of a half toning part. Thereby the boundary value table is optimized, and gradation characteristics are corrected without remarkably decreasing the number of gradation reproducible. COPYRIGHT: (C)2008,JPO&INPIT |
