| 摘要 |
PROBLEM TO BE SOLVED: To accurately measure the displacement amount inherent to each apparatus for compensating the dot formation displacement highly accurately according to distribution of the adjusting pixels. SOLUTION: In a state capable of adjusting the dot formation position in the main scanning direction with adjusting pixel value data provided at least on one side of image pixel value data, color patches and linear test patterns are formed by reference raster data including a specific number of adjusting pixels and comparison raster data including a number obtained by adding or subtracting various constants from the specific number of adjusting pixels. According to the test patterns, a plurality of patterns are formed with the dot formation position in the main scanning direction displaced gradually with respect to the reference. Furthermore, test patterns capable of clearly grasping the displacement amount are printed by forming a patch with dots of two colors, disposing dots by the n×n pixel unit, or the like. |
