| 摘要 |
PURPOSE:To provide a fixed image with a stable desired degree of luster without variation and to miniaturize the device by controlling the temperature of a cooling process with a temperature control means. CONSTITUTION:Transfer material 12 bearing unfixed multi color toner image Ta is inserted between a fixing sheet 23 and a carrying belt 25 at a pressurized contact part N of a heating roll 21 and a pressure roll 22. Then, by having the transfer material 12 held with pressure through the fixing sheet 23 by the heating roll 21 which is maintained at a specified temperature and the pressure roll 2, the multi color toner image Ta is heated, pressurized, and the colors are mixed by being softened and melted Tb. Temperature of a fixing film 23 after being passed through a color mixing by heat process is detected by a temperature detection means 36, and detected temperature information is inputted to a control circuit 37. The inputted detected temperature information and the standard temperature information set before hand are compared by a control circuit 37, and the number of revolution of a cooling fan 35 is controlled according to the size of the difference DELTAt. Therefore, the cooling effect can be constantly maintained in a stabilized state regardless of the periphery temperature or environmental temperature. |
