| 摘要 |
PROBLEM TO BE SOLVED: To easily correct misregistration, by relatively detecting information related to the misregistrations of color images of the other electrostatic recording units with respect to a reference image which is the color image of one of a plurality of electrostatic recording units, and making correction to eliminate the misregistration in accordance with the detection result. SOLUTION: When an image is to be formed, resist marks of color components are sequentially transferred onto a belt by a plurality of electrostatic recording units at a misregistration detection part 116, and then optically detected, whereby the misregistrations of the resist marks of the other color components with respect to a reference resist mark of a reference image is detected. Thereafter, when image data transmitted from a host device are developed to pixel data in an image memory 82, the write address is corrected by a misregistration correction part 124 on the basis of the detected information of the misregistration from the misregistration detection part 116 to correct the misregistration of a symmetric image with respect to the reference image at the time of printing, and printing without misregistration is carried out. |
