Patent ID: 7748695
Filing Date: 2010-07-06
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image forming unit that forms a toner image on a photosensitive element; a transfer unit that transfers the toner image formed on the photosensitive element onto a recording medium; a fixing unit that fixes the toner image transferred onto the recording medium; a feeding unit that feeds the recording medium one by one; a conveying unit that is provided at a downstream side of the feeding unit and that conveys the recording medium to the transfer unit; a registration unit that is provided at a downstream side of the conveying unit and that changes a timing at which the recording medium is fed to the transfer unit; a driving unit that drives the feeding unit, the conveying unit, and the registration unit; and a common driving source that transmits a drive force to the driving unit that drives the feeding unit and the conveying unit, wherein the driving source is a motor that rotates in either of a normal direction and a reverse direction, the feeding unit includes a mechanical drive-blocking mechanism in its driving sequence, the conveying unit includes a two-system driving sequence and a mechanical drive-blocking mechanism in the driving sequence so as to rotate in one direction regardless of a rotating direction of the driving source, and a reduction ratio of each driving sequence in the conveying unit is identical.