Electrophotography type image forming apparatus having improved

Details Electrophotography type image forming apparatus having improved Electrophotography type image forming apparatus having improved

1990-06-26

1991-12-17

Grimley, A. T.

Photocopying

Contact printing

Light boxes

346160, 355260, G03G 1500

Patent

active

050737953

ABSTRACT:
An image forming apparatus includes a photosensitive member, a charger unit provided at a charging station around the photosensitive member, a writing optical system housed in a housing and which casts the optical image of a document image onto the photosensitive member, the housing having a projection opening through which a light beam passes through and an exchanging kit. The exchanging kit includes a developing unit provided at a developing stage around the photosensitive member and a dustproof cover integrated with the developing unit, the dustproof cover having a dustproof glass through which the light beam passes. Furthermore, the exchanging kit is detachably provided around the photosensitive member.

REFERENCES:
patent: 3883242 (1975-03-01), Takahashi
patent: 4823002 (1989-04-01), Saito
patent: 4841333 (1989-06-01), Damji
patent: 4849785 (1989-07-01), Tanabe
patent: 4965633 (1990-10-01), Surti
patent: 4970552 (1990-11-01), Okamoto et al.

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