Developing device

Details Developing device Developing device

1992-03-03

1994-05-10

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355260, 355327, G03G 1506

Patent

active

053112601

ABSTRACT:
A movable frame is mounted on a stationary frame so as to be reciprocatingly moved in a predetermined direction by a moving means. The movable frame is equipped with a plurality of developing mechanisms which may be selectively located at a developing position by the motion of the movable frame to carry out multi-color developing. The developing mechanisms are urged toward a rotary drum. In order to prevent the developing agent from scattering, side sealing pieces are provided near the non-developing operation region on both sides of a sleeve member in a magnetic brush mechanism of each developing mechanism. A toner container unit including toner containers and toner feeding means is rotatably supported by the stationary frame. The toner feeding means includes a extensible and contractible means which is detachably coupled to the developing mechanism. The toner container unit is selectively brought to a predetermined fixed position relative to the developing mechanism and to a predetermined retracted position turned in a direction to separate away from the developing mechanism.

REFERENCES:
patent: 4622916 (1986-11-01), Tanaka et al.
patent: 4878091 (1989-10-01), Morita et al.
patent: 5061968 (1991-10-01), Kita
patent: 5138398 (1992-08-01), Yamada
patent: 5142325 (1992-08-01), Kai et al.
patent: 5168308 (1992-12-01), Hiraike et al.
patent: 5182584 (1993-01-01), Fukunaga et al.

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