Image-forming machine

Details Image-forming machine Image-forming machine

1989-11-02

1991-07-02

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118657, 355210, 355211, 355298, G03G 1506, G03G 2100

Patent

active

050289667

ABSTRACT:
An image-forming machine having a main body and a process unit adapted to be detachably mounted on the main body. The process unit includes a first unit having a developing device and a charging corona discharger and a second unit having a rotating drum and a cleaning device. The developing device comprises a magnetic brush mechanism comprised of a hollow cylindrical sleeve and a permanent magnet disposed within the sleeve and a blade adapted to be brought into press contact with the surface of the sleeve and to decrease sufficiently the thickness of the developer layer on the sleeve surface. The cleaning device includes an elastic blade adapted to be brought into press contact with a photosensitive member disposed on the surface of the rotating drum. The toner removed from the surface of the photosensitive member by the action of the elastic blade is recovered into an interior space of the rotating drum.

REFERENCES:
patent: 4339196 (1982-07-01), Beck et al.
patent: 4555173 (1985-11-01), Iseki et al.
patent: 4609276 (1986-09-01), Mitzutani
patent: 4922305 (1990-05-01), Agarwal

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