| 摘要 |
PURPOSE:To avoid complication of control operation and to control energizing according to the photosensitive characteristic of an image carrier by controlling energizing of a process means which is selected at random based on control target temperature which does not correspond to actual surface temperature of the image carrier but with environmental temperature. CONSTITUTION:This device is equipped with a temperature detection element 13, which is provided on the opposite side of the image carrier 1, and a control circuit 14 which calculates a heating control value which corresponds to the environmental temperature of the device, based on a detecting signal from the detection element 13. And this device can control heating of the image carrier 1 and active output of process means, variably. It can constantly maintain the active output which corresponds to a control target value, because it is kept regularly during the recording and does not cause successive micro- fluctuation, unlike the actual temperature of the image carrier surface, and controls the active output based on said control target value. Thus voltage control which corresponds to photosensitive characteristics of the image carrier 1 can be performed by avoiding complication of the control operation of process means. |
