Patent ID: 8831491

Claim:
An image forming apparatus comprising: an image bearing member; a stretched rotatable belt member; transfer means for forming a transfer portion for permitting transfer of a toner image from said image bearing member onto a recording material carried on said belt member; a separation roller, capable of separating from said belt member the recording material carried on said belt member, for stretching said belt member; push-up means capable of locally pushing up a belt surface, with respect to a widthwise direction of said belt member, located upstream of said separation roller and downstream of the transfer portion with respect to a rotational direction of said belt member to separate from said belt member the recording material carried on said belt member; pre-separation charging means, located downstream of the transfer portion and upstream of said push-up means with respect to the rotational direction of said belt member, for electrically charging the recording material by being supplied with a bias of an identical polarity to a normal charge polarity of a toner; and an execution portion for executing an operation in a mode in which the recording material charged by said pre-separation charging means is separated from said belt member by pushing up said belt member by said push-up means.