| 摘要 |
PURPOSE:To perform uniform thermal development and thermal transfer, by providing temperature sensors which detect temperatures of heating rollers, an ambient temperature sensor, and control circuit. CONSTITUTION:Temperature sensors 50A, 52A, and 56A and 66A, 68A, and 69A are respectively provided for heating rollers 50, 52, and 56 and heaters 66, 68, and 69 and an ambient temperature sensor 27 which measures the ambient temperature is fitted to the side of the base of this heater. The sensors 50A, 52A, 56A, 66A, 68A, 69A, and 72 are respectively connected with the multiplexer 74A of a control circuit 74. The control circuit 74 is composed of the multiplexer 74A, an AD converter 74B which converts output of the sensor into digital signals, microcomputer 74C, and power source device 74D and the power source device 74D is connected with each of the heaters 66, 68, and 69.
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