Electrophotographic apparatus with photosensitive drum requiring

Details Electrophotographic apparatus with photosensitive drum requiring Electrophotographic apparatus with photosensitive drum requiring

1994-03-08

1996-06-25

Braun, Fred L.

Photocopying

Contact printing

Light boxes

355214, G03G 1500, G03G 2100

Patent

active

055305245

ABSTRACT:
A compact electrophotographic apparatus is attained by decreasing the diameter of the photosensitive drum so that a plurality of rotations of the drum are required to produce a single sheet image. Images of excellent quality, especially with respect to the lack of stepwise density decrease across the image due to multiple drum rotations per image, are achieved by providing for discharge of the photosensitive drum so that the residual potential on the drum is 10% or less of the charged surface potential after discharge on the first rotation of the drum and the increase in the residual potential is not more than 30% after discharge on the last rotation of a sheet making cycle.

REFERENCES:
patent: 4821068 (1989-04-01), Honma et al.
patent: 4870460 (1989-09-01), Harada et al.
patent: 4985730 (1991-01-01), Ohba et al.
patent: 5107302 (1992-04-01), Bisaiji
patent: 5386279 (1995-01-01), Fukami et al.

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