Image forming apparatus having a fixing apparatus

摘要

The present invention provides an image forming apparatus comprising an image forming means for forming a non-fixed toner image on a recording material, a heating means for heating the non-fixed toner image, a back-up member for cooperating with the heating means to form a nip therebetween, the back-up member pinching and conveying the recording material at the nip in such a manner that the non-fixed toner image is contacted with the heating means so that the non-fixed toner image is fixed to the recording material by heat from the heating means, and a cleaning member for cleaning the back-up member, the cleaning member being brought to a first cleaning mode in which an image forming operation is not effected and the back-up member is cleaned or a second cleaning mode in which the image forming operation is not effected and the back-up member is cleaned, the second cleaning mode having a cleaning time longer than a cleaning time of the first cleaning mode.