Electrophotography – Image formation – Development
Reexamination Certificate
2006-11-21
2006-11-21
Gray, David M. (Department: 2852)
Electrophotography
Image formation
Development
C399S256000, C399S120000
Reexamination Certificate
active
07139516
ABSTRACT:
The developer replenishment apparatus includes a first developer container for accommodating the developer for replenishment, a first conveyance member disposed in the first developer container to discharge the developer for replenishment through a first opening of the first developer container, a second developer container for receiving the developer for replenishment discharged from the first opening, an agitating member disposed in the second developer container to agitate the developer for replenishment, a second conveyance member disposed in the second developer container to discharge the developer for replenishment through a second opening of the second developer container toward the developing apparatus, and a driving device which does not drive the second conveyance member but drives the agitating member when driving the first conveyance member. The bulk density of the developer is thereby stabilized to make possible replenishment with the developer at high accuracy.
REFERENCES:
patent: 4937625 (1990-06-01), Kato et al.
patent: 5005517 (1991-04-01), Fukui et al.
patent: 5784669 (1998-07-01), Miura et al.
patent: 6456809 (2002-09-01), Sekiguchi
patent: 2005/0002700 (2005-01-01), Nishitani
patent: 2005/0207794 (2005-09-01), Katoh et al.
Fitzpatrick ,Cella, Harper & Scinto
Gray David M.
Wong Joseph S.
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