Photoreceptor for positive electrostatic charge
 Disclosed is a photoreceptor for electrophotography comprising a carrier generation layer and a charge transport layer. The organic charge generating substance has, at the time of positive charging, a photosensitivity less than the photosensitivity at the time of negative charging. 
Konischiroku Photo Industry Co., Ltd.
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Yasuo Yoshihide Masataka
Suzuki Fujimaki Takimoto