Method and apparatus for image forming capable of effectively performing color image position adjustment

摘要

A method of image forming includes the steps of providing detachable image forming mechanisms (6a, 6b, 6c, 6d, 7a, 7b, 7c, 7d, 60a, 60b, 60c, 60d), detecting whether at least one of the detachable image forming mechanisms (6a, 6b, 6c, 6d, 7a, 7b, 7c, 7d, 60a, 60b, 60c, 60d).has been changed, and performing an adjustment if one of the detachable image forming mechanisms (6a, 6b, 6c, 6d, 7a, 7b, 7c, 7d, 60a, 60b, 60c, 60d) has been exchanged. The providing step provides detachable image forming mechanisms 64, 64a, 64b, 64s, 64p, 65, 66, 69a, 69b, 69c, 69d, 69n,) for forming color images, each using a color toner different from the other image forming mechanisms (6a,6b,6c,6d,7a,7b,7c,7d,60a,60b,60c,60d), and an image carrying member for carrying the color images sequentially overlaid on one another to form a single color image. The detecting step detects whether at least one of the plurality of detachable image forming mechanisms (6a, 6b, 6c, 6d, 7a, 7b, 7c, 7d, 60a, 60b, 60c, 60d) has been exchanged. The performing step performs an adjustment for eliminating displacements of color images formed by the detachable image forming mechanisms (6a, 6b, 6c, 6d, 7a, 7b, 7c, 7d, 60a, 60b, 60c, 60d), exchange of the detachable image forming mechanisms is detected in the detecting step.