Sequentially moving individual developing units to developing lo

Details Sequentially moving individual developing units to developing lo Sequentially moving individual developing units to developing lo

1995-11-13

1997-09-09

Pendegrass, Joan H.

Electrophotography

Image formation

Development

G03G 1501

Patent

active

056666136

ABSTRACT:
A developing apparatus for developing an electrostatic latent image formed on a photoconductive member has a plurality of developer units supported by a rotatable supporting device, an elastic member such as a spring which rotates the supporting device through a predetermined angle to sequentially position the developer units in a developing position, and a switching device which switches the position among the developing units. The switching device has an accumulating device such as an electric motor which accumulates the energy in the elastic member, and a releasing device which releases the energy accumulated in the elastic member to effect the rotation of the supporting device and substantially instantaneous switching of the developer units.

REFERENCES:
patent: 4713673 (1987-12-01), Kessoka
patent: 4728987 (1988-03-01), Diola et al.
patent: 4922301 (1990-05-01), Katoh et al.
patent: 5198866 (1993-03-01), Kimura et al.

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