In a fuser, a cooling structure (5) is disposed so that a bend angle (.alpha.) of apart bent during the time between an endless belt (3) coming in contact with a press cooling face (5a) of the cooling structure (5) and exiting from the press cooling face (5a) is placed in the range of 0.degree. C.<.alpha..ltoreq.7.degree. C. A fixing belt has a minute hardness of 0.1 to 5 at least on the belt surface coming in contact with toner T and preferably has a gloss degree of 75 or more on the belt surface.

В fuser, размещана охлаждая структура (5) так НОП угол загиба (alpha.) отделенное изогнутого во время времени между бесконечным поясом (3) come in contact with сторона давления охлаждая (5Јa) охлаждая структуры (5) и выходить от стороны давления охлаждая (5Јa) помещены в ряде 0.degree. Ч.