Provided is an image forming apparatus. A recording material is held and conveyed by a registration nip portion of a registration roller pair, a secondary transfer portion, and a fixing nip portion of a fixing device, respectively. The conveyance speed of the recording material in the secondary transfer portion is set to be higher than that in the fixing nip portion, and the recording material has a flexed shape between the secondary transfer portion and the fixing nip portion. The conveyance speed in the registration nip portion is increased after a leading edge of the recording material reaches the fixing nip portion. With this configuration, a force exerted on an intermediate transfer belt is canceled out with stiffness of the recording material.