Patent ID: 8565655

Claim:
An image forming apparatus comprising: an image bearing member for bearing a toner image; toner image forming means for forming a toner image on said image bearing member; a rotatable belt member, stretched by a plurality of stretching members, for carrying and conveying a recording material; a transfer member for transferring the toner image from said image bearing member onto the recording material carried on said belt member by pressing said belt member against said image bearing member; bias applying means for applying to said transfer member a transfer bias for transferring the toner image from said image bearing member onto the recording material; push-up means for locally pushing up said belt member from an inner surface side of said belt member, in a direction perpendicular to a recording material conveyance direction, at a downstream-side position of said transfer member with respect to the recording material conveyance direction; and an execution portion for executing an operation in a mode in which the recording material is separated from said belt member by a push-up operation for said belt member by said push-up means, wherein in the mode, the push-up operation of said push-up means is performed, during rotation of said belt member, before the transfer bias is applied to said transfer member.