| 摘要 |
PROBLEM TO BE SOLVED: To prevent the wrinkles, warpage, wave or the like of transfer paper from being caused by too large fixing pressure when the thickness of sticking toner at the time of second fixing becomes larger than that at the time of first fixing in the case of both-side printing because images are transferred on both sides of the transfer paper, especially at the time of the second fixing in which the thickness of toner becomes larger. SOLUTION: The thickness of the elastic body 26a of a third heating roller 26 forming a second fixing part 28 with a second heating roller 25 is made to be larger than the thickness of the elastic bodies 24a and 25a of first and the second heating rollers 24 and 25 forming a first fixing part 27, so that deforming amount is increased. Thus, difference between the fixing pressure of the first fixing part 27 fixing a toner image transferred on one face of the transfer paper 11 and the fixing pressure of the second fixing part 28 fixing the toner image transferred on the other face of the transfer paper 11 is reduced. |
