Patent ID: 8406646
Filing Date: 2013-03-26
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image carrier configured and arranged to carry an image; a transfer roller including a substrate and an elastic member, the substrate including a concaved portion formed on a circumferential surface of the substrate with the concaved portion extending continuously along a shaft of the transfer roller from a first side of the shaft to a second side of the shaft and with the concaved portion having a width in a circumferential direction larger than a width of a transfer nip formation area formed between the image carrier and the transfer roller in the circumferential direction, the elastic member disposed on the circumferential surface of the substrate, the transfer roller being configured and arranged to transfer the image which is carried by the image carrier onto a transfer material at the transfer nip formation area; a transfer roller position detector configured and arranged to detect a rotational position of the transfer roller; and a controller configured to stop rotation of the transfer roller in a state in which the concaved portion is located at the transfer nip formation area on the basis of the rotational position of the transfer roller detected by the transfer roller position detector.