Patent ID: 8355663
Filing Date: 2013-01-15
Classification: G03G

Abstract:
1. A photosensitive cartridge comprising: a frame; a photosensitive drum that is rotatably supported on the frame; a drum gear, which is provided at one end portion of the photosensitive drum, and which rotates integrally with the photosensitive drum; a first cleaning roller, a peripheral surface of which contacts a peripheral surface of the photosensitive drum to remove extraneous matter on the peripheral surface of the photosensitive drum; a second cleaning roller contactable with the peripheral surface of the first cleaning roller, wherein a second cleaning roller shaft is parallel to a center axis of the photosensitive drum and a first cleaning roller shaft; a cleaning gear, which is provided at one end portion of the first cleaning roller, which meshes with the drum gear, and which rotates integrally with the first cleaning roller by a rotational driving force from the drum gear; and a pendulum bearing that integrally comprises: wherein the first cleaning roller is swingable around the second cleaning roller shaft with maintaining a relative distance and parallelism to the second cleaning roller shaft by the pendulum bearing, the second cleaning roller shaft being a swing axis of the first cleaning roller, wherein the swing axis is provided at a side that is opposite to the photosensitive drum with respect to a straight line, the straight line extending in an input direction of a force, which is input to a tooth surface of the cleaning gear from a tooth surface of the drum gear, through a meshing position between the cleaning gear and the drum gear, and wherein the frame comprises a restricting face that extends in a direction substantially perpendicular to the input direction so as to restrict movement of the first cleaning roller in the input direction while allowing movement of the first cleaning roller in the direction substantially perpendicular to the input direction.