Patent ID: 8190047

Claim:
An image forming apparatus, comprising: a fixing part for fixing a toner image on a transfer material to said transfer material; a conveying part provided on a downstream side of said fixing part; a correcting member provided in a conveyance path leading from said fixing part to said conveying part, for correcting a curl of said transfer material; and a control part for controlling an upstream-side conveyance speed which is a conveyance speed at which said fixing part provided on an upstream side of said correcting member conveys said transfer material and a downstream-side conveyance speed which is a conveyance speed at which said conveying part provided on a downstream side of said correcting member conveys said transfer material, wherein in printing of a first surface in a double-sided printing mode, said control part sets said downstream-side conveyance speed to be larger than said upstream-side conveyance speed, and in printing of a second surface in said double-sided printing mode, said control part sets said upstream-side conveyance speed and said downstream-side conveyance speed so that a difference between said upstream-side conveyance speed and said downstream-side conveyance speed is smaller than a difference between said upstream-side conveyance speed and said downstream-side conveyance speed in printing of said first surface.