| 摘要 |
PURPOSE:To stably fix an image without being influenced by various factors by providing a control means MPU, a buffer, a power control means, an AC power source, an A/D converter, a counter and a controller. CONSTITUTION:In a power control means 33, an LED 33a receives a command of an MPU through a buffer 32, turns on triac 33b and executes a feed to a heater 4 of a fixing device 24. An A/D converter 35 detects a variation of an ambient temperature of the fixing device 24 by a thermistor 3, and informs it to the MPU. A buffer 38 transfers various commands to a driving source of each part of an image forming device, and a buffer 39 conveys detecting signals from a feed paper sensor and other various sensors to the MPU. A counter 41 gives a counting value 44 of a pulse 43 for showing a rotation stop time of the fixing device 24 to the MPU, and reset by a signal 42. A controller 45 generates an image forming command to the MPU. The MPU corrects a target reference temperature of the fixing device 24 by the counting value 44, controls the power control means 33, controls each driving device through the buffer 38, when a correction value and a detection value of a thermistor 3 have coincided, and allows said fixing device to execute a stable fixation. |
