| 摘要 |
PROBLEM TO BE SOLVED: To suppress the progress of the deterioration of an image carrier when forming the image of an original in which a monochromatic page not incorporating a color image and the page of multicolor incorporating the color image coexist and also to enhance the speed of image forming without changing the page order obtained after image forming of a recording material. SOLUTION: Even after the recording material P passes the photoreceptor drum 222b of cyan after a transfer feeding belt mechanism 213 starts moving, the photoreceptor drums 222b-222d of cyan, magenta and yellow do not abut on the transfer feeding belt 216. Until the recording material P passes the photoreceptor drum 222d of yellow, the photoreceptor drums 222b-222d of cyan, magenta and yellow do not simultaneously abut on the transfer feeding belt 216. |
