Charger apparatus

Details Charger apparatus Charger apparatus

1994-03-17

1995-09-26

Smith, Matthew S.

Photocopying

Contact printing

Light boxes

361225, 361230, G03G 1502

Patent

active

054538190

ABSTRACT:
A charger capable of reliably and uniformly maintaining a discharging gap formed in the vicinity of a contact portion between a charging member and a photosensitive member. A charging member 101 is arranged by supporting and fixing both ends of a flexible film 102 by means of support members 103 to 105. The film 102 forms a flexible portion oriented downwardly from fixed ends S1, S2. The film 102 is brought into contact with the member 110 to be charged in a state in which an unsupported side of the film 102 is oriented toward the downstream side in the rotating direction of the member 110 to be charged. Then, the film 102 is brought into contact with the member 110 to be charged in a contact area N, and the radius of curvature of the film 102 in a zone P2 located downstream of that zone N in the rotating direction of the member 110 to be charged becomes smaller than the radius of curvature of the film 102 in an upstream zone P1.

REFERENCES:
patent: 5192974 (1993-03-01), Ikegawa et al.
patent: 5243387 (1993-09-01), Ikegawa

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