| 摘要 |
PURPOSE:To improve the fixability of a color image and to prevent water, etc., from being adsorbed and to prevent an image from running by heating a transfer member and raising its temperature while a transfer member is held by a transfer member holder. CONSTITUTION:An electrostatic latent image on a photosensitive drum 1 is visualized by developing devices 18 (181-183), transferred to a transfer drum 22, and then transferred to the transfer member from a paper feeder 26. When the transfer member is conveyed from the paper feeder 26 and wound around the transfer drum 22, a heater 40 is powered on to raise the temperature of the transfer member. The transfer member is heated to a constant set temperature by the heater 40 which is brought under the temperature control of a temperature sensor 41 detecting its temperature. This set temperature is determined by the glass transition temperature of toner resin and the permissible surface temperature of the photosensitive body.
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