Developing device and image forming apparatus including the...

Details Developing device and image forming apparatus including the... Developing device and image forming apparatus including the...

2011-05-24

2011-05-24

Gray, David M (Department: 2852)

Electrophotography

Internal machine environment

Particle or contaminant control

C399S029000, C399S119000

Reexamination Certificate

active

07949282

ABSTRACT:
A developing device includes a housing, a developing roller that carries developer, a supply roller for supplying the developer, a developer cartridge that accommodates the developer, a first sealing member that is provided at both ends of the developing roller, a developer passage opening provided in at least one of the housing and the developer cartridge, and a second sealing member provided in a vicinity of the developer passage opening. At least a part of the second sealing member overlaps the first sealing member in a direction in which the developer cartridge is attachable to and detachable from the housing. A portion of a shadow of the second sealing member cast in a direction, in which the developer passes through the developer passage opening, overlaps the first sealing member. The developer cartridge is attachable to and detachable from the housing at a position opposed to the developing roller.

REFERENCES:
patent: 5384629 (1995-01-01), Watanabe et al.
patent: 5506665 (1996-04-01), Ishida et al.
patent: 5568237 (1996-10-01), Ishida et al.
patent: 5608501 (1997-03-01), Makino
patent: 07-225514 (1995-08-01), None
patent: 07-306589 (1995-11-01), None

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