Image forming apparatus

Details Image forming apparatus Image forming apparatus

2011-07-12

2011-07-12

Gray, David M (Department: 2852)

Electrophotography

Diagnostics

Consumable

C399S254000

Reexamination Certificate

active

07978988

ABSTRACT:
An image forming apparatus, which has a plurality of image forming units, comprises a plurality of cartridges adapted to supply developer; a plurality of supply members adapted to supply developer to the image forming units from a plurality of the cartridges; a drive unit adapted to drive a plurality of the supply members; and a control unit adapted to supply developer from a plurality of the cartridges by selectively operating a plurality of the supply members based on the amount of developer accommodated in the cartridges.

REFERENCES:
patent: 4977428 (1990-12-01), Sakakura et al.
patent: 5530527 (1996-06-01), Fukasawa et al.
patent: 2006/0165423 (2006-07-01), Nishitani et al.
patent: 1-297677 (1989-11-01), None
patent: 2002-369588 (2002-12-01), None
patent: 2004-118028 (2004-04-01), None

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