| 摘要 |
PROBLEM TO BE SOLVED: To maintain fixing performance by setting an optimal fixing temperature corresponding to the accumulated operation amount of a fixing part.SOLUTION: An image forming apparatus 100 includes a fixing roller 41 and a pressure roller 44 arranged so as to be opposite to each other across a fixing belt 43 in a pressure-contact state. A sponge 412 is peripherally provided on the peripheral surface of the fixing roller 41. A fixing part 40 has a lamp heater 421 of a heating roller 42 for heating the fixing roller 41 side. Furthermore, the image forming apparatus includes: a fixing roller rotational frequency integration part 931 for accumulating the rotational frequency of the fixing roller 41 to acquire an integrated rotational frequency; and a fixing temperature setting part 94 for setting an optimal fixing temperature corresponding to the integrated rotational frequency in the lamp heater 421.SELECTED DRAWING: Figure 3 |
