Image forming apparatus comprising a plurality of developing dev

Details Image forming apparatus comprising a plurality of developing dev Image forming apparatus comprising a plurality of developing dev

1989-01-09

1990-04-10

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355260, G03G 1508

Patent

active

049164902

ABSTRACT:
An image forming apparatus including at least first and second developing devices for developing latent images formed on an image bearing member. The first and second developing devices contain developers of different colors, respectively. The second developing device contains a developer of a predetermined color and is fixedly mounted in the image forming apparatus. The first developing device contains a developer of a color other than the predetermined color and is detachably mountable in the image forming apparatus. Only the first developing device is exchangeable.

REFERENCES:
patent: 3960445 (1976-06-01), Drawe
patent: 4523834 (1985-06-01), Pelda et al.
patent: 4607939 (1986-08-01), Saito
patent: 4619514 (1986-10-01), Ide

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