| 摘要 |
PROBLEM TO BE SOLVED: To shorten first print-out time without degrading image quality and increasing noise, in a heating device for partially heating a heating rotation body; and to provide an image forming apparatus that has the heating device. SOLUTION: In a standby mode, the temperature of a first rotation body is controlled while the first rotation body 10 and a second rotation body 30 are separated. In a device rise mode, the first rotation body is rotated so that the rotating speed of the first rotation body when the temperature of the first rotation body shifts to a heating-fixing temperature for an unfixed image t in the standby mode is different from the rotating speed when the material P to be heated is sandwiched and conveyed by a nip part N. COPYRIGHT: (C)2007,JPO&INPIT
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