| 摘要 |
PROBLEM TO BE SOLVED: To obtain superior image quality by eliminating color slurring between plural color images through easy control. SOLUTION: A phase difference between an ITOP signal obtained by detecting a reference mark on an intermediate transfer body 9 by a top sensor 23 and an IBD signal obtained by detecting a reference mark by a BD sensor 24 is detected. A drive pulse width W of a pulse motor 25 which drives the transfer body 9 and a photoreceptor drum 8 is controlled according to the detected phase difference. |
