Patent ID: 7016636

Claim:
A double-sided image forming apparatus which forms a first image supported by a first image supporting medium and a second image supported by a second image supporting medium on both sides of a copy sheet simultaneously, comprising: a first unit performing developing of the first image and the second image on the first image supporting medium; a second unit performing transferring of the developed second image to the second image supporting medium; a third unit controlling the developing of the second image on the first image supporting medium to be performed earlier than the developing of the first image on the first image supporting medium; a paper jam detection device detecting a paper jam which occurs in the image forming apparatus; and a determination unit determining whether the occurrence of a paper jam is detected by the paper jam detection device, the determination being performed after an end of the developing of the second image on the first image supporting medium and before a start of the developing of the first image on the first image supporting medium.