| 摘要 |
PROBLEM TO BE SOLVED: To reduce bi-directional color difference with a simple configuration.SOLUTION: A second black head 4k2 is disposed to have displacement equal to one nozzle row width in a sub-scanning direction in a downstream side of a medium conveying direction with respect to a first color head 4c1 and a second color head 4c2. After an image is formed in main scanning in one direction by the first color head 4c1 and the second color head 4c2, a paper sheet 10 is conveyed for one line. On the image formed in the main scanning in one direction by the first color head 4c1 and the second color head 4c2, an image is formed in the main scanning in another direction by the second black head 4k2 while ejecting black liquid, thereby, the image is completed. |
