| 摘要 |
PROBLEM TO BE SOLVED: To attain such a high resolution as >=600 dpi. SOLUTION: An electric charge injection blocking layer comprising a-Si and a photoconductive layer are successively laminated on an electrically conductive substrate. Boron atoms are incorporated into the photoconductive layer in a proportion of 0.08-0.7 ppm to silicon atoms to obtain a photoreceptor 8. This photoreceptor 8, a corona charger 9, an exposure unit 10 which irradiates light at >=600 dpi dot density, a developing machine 12, a transfer unit 14, a cleaning means 15 and a de-electrifying means 16 are disposed to obtain the objective image forming device 7.
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