ELECTROPHOTOGRAPHIC DEVICE

摘要

PURPOSE:To obtain an electrophotographic device in which the positioning time of a photosensitive body in reference to an intermediate transfer body is not needed, whose cost is reduced by disusing a photosensitive body clutch mechanism and where the fine adjustment of color matching is accomplished. CONSTITUTION:The time difference of one cycle time between the photosensitive body 1 and the intermediate transfer body 6A is calculated based on the detection output of a photosensitive body reference mark 1b and an intermediate transfer body reference mark 6a. Image forming actions are controlled based on the calculated result, 1st set time T1 from the 1b to the image recording start position of a 1st color and 2nd set time T2 being between the 1b and the image recording start of the 1st color and from the photosensitive body reference mark showing a non-image area, which are previously set in a ROM 23, and 3rd time T3 obtained by subtracting the time difference which is measured and calculated in the midst of forming the image of a final color in the time from the photosensitive reference detection till the image recording start of the final color in every cycle of forming the color synthetic image once.