Patent ID: 9158237
Filing Date: 2015-10-13
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image bearing member for carrying a toner image; an endless intermediary transfer belt which is movable along an endless path; a transfer member, including a contact portion contacting an inner surface of said belt, for transferring the toner image from said image bearing member onto a surface of said belt, wherein a length of the contact portion measured in a moving direction of said belt is larger than a length of a portion where said belt contacts said image bearing member, measured in the moving direction; a voltage source for applying a voltage to said transfer member; a supporting member having a supporting portion for supporting said transfer member, and an urging member for urging said supporting member in an urging direction toward said belt, wherein said supporting member is rotatable during movement of said belt, about an axis of a rotational shaft so as to move in a direction perpendicular to the moving direction of said belt, wherein said urging member urges said supporting member to contact said contact portion to said belt during movement of said belt, wherein said rotational shaft is disposed at a position which is away from the inner surface of said belt in the endless path and which is upstream of said contact portion with respect to the moving direction of said belt.