Rotary-type developing unit

Details Rotary-type developing unit Rotary-type developing unit

1998-08-10

1999-06-22

Braun, Fred L.

Electrophotography

Image formation

Development

G03G 1501

Patent

active

059151510

ABSTRACT:
A rotary-type developing unit includes: a rotary holder mounting a plurality of developing devices; each of the developing devices having: a developing housing storing a two-component developer consisting of a toner and a carrier and including a developing opening formed in part thereof; a developer carrier disposed opposed to the developing opening of the developing housing and carrying the two-component developer thereon; and a developer delivery member stirring and delivering the developer existing within the developing housing so as to supply the developer to the developer carrier. The developer carriers of the respective developing devices are selectively arranged at a developing position facing a latent image carrier by rotating the rotary holder intermittently, whereby respective color component latent images on the latent image carrier are respectively developed by the respective corresponding developing devices. A developer storing recessed portion where a developer free from the operation of the developer delivery member is stored is formed downwardly of the developer delivery member of the developer housing, in a state in which each of the developing devices is set at the developing position.

REFERENCES:
patent: 5655190 (1997-08-01), Fuchiwaki
patent: 5671465 (1997-09-01), Kimura et al.

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