| 摘要 |
PURPOSE:To preclude the partial deterioration of an image carrier and the trouble of an optical memory to a formed image and to prevent the image carrier from rotating more than required by providing a sensor and a controller and controlling the rotation of the image carrier. CONSTITUTION:Output signals from the light quantity sensor 6 and a temperature sensor 10 are inputted to a controller 22 and a fluorescent lamp 2, a driving motor 24, and a fixing heater 26 are controlled based on those inputs. Namely, when a fluorescent lamp wait-up sequence is entered, the fluorescent lamp 2 is turned on and a heater 26 also enters the wait-up sequence. Then when the fluorescent lamp 2 does not reach a specific quantity value, a drum 3 is rotated to a position where the exposed surface of the photosensitive drum (image carrier) is not exposed at set temperature lower than the fixation temperature of a fixing roller 9. Thus, the exposed surface of the drum 3 is displaced to prevent the same part from being irradiated by the fluorescent lamp 2 for a long time, and consequently the partial deterioration of the drum 3 and the trouble of the optical memory to the formed image are precluded and the drum 3 is prevented from rotating more than required. |
