Positioning means for a pivotally mounted electrostatic image fo

Details Positioning means for a pivotally mounted electrostatic image fo Positioning means for a pivotally mounted electrostatic image fo

1991-02-11

1992-02-18

Grimley, A. T.

Photocopying

Contact printing

Light boxes

346155, 355210, G03G 1500

Patent

active

050898469

ABSTRACT:
Electrostatic image forming device according to the present invention is contacted with a surface of a photosensitive drum by way of a positioning member so that it may follow the photosensitive drum in any eccentric condition, and consequently, the position thereof relative to the photosensitive drum is maintained constant, and accordingly, a recorded picture of a high quality is obtained. Further, since the relative positions of the electrostatic image forming device and the photosensitive drum are varied by adjustment of the positioning measure in response to opening and closing operation of an electrophotographic apparatus body, electrostatic image forming device having a short focal length can be used, and the overall size of the electrophotographic apparatus body can be reduced.

REFERENCES:
patent: 4257054 (1981-03-01), Ishikawa
patent: 4258372 (1981-03-01), Ishikawa
patent: 4849824 (1989-07-01), Sakuragi et al.
patent: 5005053 (1991-04-01), Kozuka
patent: 5006865 (1991-04-01), Kuroiwa

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