Patent ID: 7395021

Claim:
An image forming apparatus comprising: an image forming device configured to form an unfixed toner image on a sheet; a fixing device including a roller and a belt configured to fix the unfixed toner image on the sheet at a nip portion where said roller and said belt contact with each other; a reversing device configured to reverse a first surface of the sheet on which the unfixed toner image is fixed at the nip portion and a second surface which is opposite to the first surface of the sheet, so as to form the unfixed toner image on the second surface of the sheet by said image forming device and fix the unfixed toner image on the second surface of the sheet at the nip portion; and a cooling device configured to cool the sheet which is moving while keeping contact with said belt after the unfixed toner image on the sheet is heated at the nip portion and before the sheet is separated from said belt, wherein said apparatus is operable in an image forming mode for forming a high-gloss image on the first surface of the sheet and a low-gloss image on the second surface of the sheet, by introducing the sheet into the nip portion so that the unfixed toner image on the first surface of the sheet contacts with said roller, and thereafter reintroducing the sheet into the nip portion by said reversing device so that the toner image on the first surface of the sheet contacts with said belt.