Patent ID: 7266328
Filing Date: 2007-09-04
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a primary transfer part for primarily transferring onto its circling surface a toner image carried on a photoreceptor; a plurality of image forming units wherein said photoreceptor installed in each image forming unit is arranged along a circling direction of said primary transfer part; an intermediate transfer unit having a secondary transfer roller positioned at a secondary transfer position of said toner image, said secondary transfer position being positioned at a downstream of said primary transfer part; an intermediate transfer body which is an endless circling body carried along a prescribed transporting pathway; and a first roller, a second roller, and a third roller, wherein said transporting pathway is inclined upwardly along said primary transfer part in the direction from a down-most image forming unit to an up-most forming unit, wherein said first roller is configured to transport said intermediate transfer body, said second roller is configured to give tension to said intermediate transfer body and said third roller opposes said secondary transfer roller; wherein said primary transfer part is defined between said first roller and said second roller; and wherein said intermediate transfer body installed in said intermediate transfer unit is an intermediate transfer belt, further comprising a cleaning mechanism having a cleaning member which is pressed on surface of said belt for cleaning paper powders or toners left on said surface of said belt, a rotational shaft and a cleaning mechanism frame, wherein said rotational shaft is detachably and rotatably attached to a belt supporting frame that supports the intermediate transfer belt, and wherein said cleaning mechanism frame rotates with the rotation of the rotational shaft such that the cleaning mechanism frame faces said belt supporting frame fixing both frames at a point where said cleaning member presses against a circling surface of the endless belt; and the image forming apparatus wherein said intermediate transfer unit frame has a circular hole opening and an arc hole opening for catching said rotational shaft.