Multicolor electrophotography apparatus

Details Multicolor electrophotography apparatus Multicolor electrophotography apparatus

1988-04-15

1990-07-03

Prescott, A. C.

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Contact printing

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355260, 355326, 430120, 430357, 118645, G03G 1508

Patent

active

049395475

ABSTRACT:
A multicolor electrophotography apparatus for forming a color image on a rotatable photosensitive device shaped cylindrically and arranged to hold on its circumferential surface an electrostatic image optically formed by an exposing device. The apparatus includes a plurality of developing devices movably provided along the circumference of the photosensitive device for developing a plurality of different-color toner images overlapping each other. Each of the developing devices is selectively driven to take a developing position and a non-developing position, each of the developing devices being closed to photosensitive devices up to the developing position and being separated therefrom up to the non-developing position. When the exposing device is in the non-operated state, at least one of the developing devices takes the developing position and the other developing devices take the non-developing positions.

REFERENCES:
patent: 4713673 (1987-12-01), Kessoku
patent: 4746951 (1988-05-01), Hayakawa et al.
patent: 4754301 (1988-06-01), Kasamura et al.
patent: 4801966 (1989-01-01), Ikeda

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