| 摘要 |
PURPOSE:To prevent the surface temperature of a heat roller from dropping abruptly right after a heat roll and a pressure roll begin to rotate. CONSTITUTION:When the rotating speed and fixation temperature of an image formation device are controlled, three modes of rotation speed are provided, i.e., a 1st rotating speed Va as a fixation speed, a 2nd rotating speed Vs1 in a stand-by mode, and a 3rd rotating speed Vs2 which is set slower than the 1st rotating speed Va and faster than the 2nd rotating speed Vs1; and the heat roller is rotated at the 1st rotating speed Va when the surface temperature of the heat roller is between 1st temperature Tin as process initialization start temperature and 2nd temperature Tst as set temperature in the stand-by state after the power source is turned ON, at the 3rd rotating speed Vs2 for a predetermined period after 2nd temperature Tst is reached if the time from a predetermined point of time after the power source is turned ON to the temperature rise up to the 2nd temperature Tst, and then at the 2nd rotating speed Vs1 thereafter. |
