ELECTROSTATIC RECORDING DEVICE OF TRANSFER SYSTEM

摘要

PURPOSE:To reduce the fatigue of a photoreceptor, by changing the discharge current of a discharger or/and the irradiation light from post-development and pre-transfer lamp for exposure of the photo-receptor to the surface of the photoreceptor by the detection signal of the potential of the surface of the photoreceptor before the development to separate a transfer paper stably with a separating electrode even if originals are changed. CONSTITUTION:The discharge current of a separating electrode 2 is controlled on the basis of the detection output of a detector 10 for the potential of the surface of a photoreceptor to separate a transfer paper stably even if an original is changed to a photographic original or a character original. Meanwhile, under a constnt condition where the discharge current is >=140muA, a pre-transfer exposure lamp 15 is lit or the quantity of light of this lamp is increased when the potential of the surface of the photoreceptor detected by the detector 10 exceeds a certain value. When the potential of the surface of the photorecptor is a certain voltage or less, a switch S is switched to a resistance RA to set the quantity of light of the lamp 15 to 15 luxsec; and when this potential is higher than the ceertain voltage, the switch S is switched to a resistance R to set the quantity of light of the lamp to 30luxsec.