Patent ID: 7912391
Filing Date: 2011-03-22
Classification: B41J,G03G

Abstract:
1. An image forming apparatus comprising: an image forming device configured to form a toner image on a sheet; a first image heating device configured to heat the toner image formed on the sheet at a first nip; a second image heating device configured to heat the toner image on the sheet, heated by said first image heating device, at a second nip which is different from the first nip; a first path for conveyance of the sheet which is heated by said first image heating device through said second image heating device toward the outside of said apparatus; a second path, branched from said first path, for conveying the sheet heated by said first image heating device without being conveyed through said second image heating device, toward the outside of said apparatus; a bifurcation portion at which said second path branches from said first path; a detector, disposed at a position between said first image heating device and said second image heating device, configured to detect a glossiness of the toner image on the sheet heated by said first image heating device; and a controller configured to control an operating condition of said second image heating device based on the detected glossiness of the toner image on the sheet heated by said first image heating device so that the glossiness of the toner image on the sheet becomes a target glossiness, wherein said detector is disposed at a position upstream of said bifurcation portion and downstream of said first image heating device in a conveying direction of the sheet.