Developing device reducing toner pressure on supply roller...

Electrophotography – Having particular structure – Modular or displaceable

Reexamination Certificate

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Details

C399S262000

Reexamination Certificate

active

07639969

ABSTRACT:
A tandem-type color laser printer is provided with process units for each color which are arranged horizontally and in parallel with each other. In a developing unit in each process unit, a supply roller and a developing roller are disposed below a toner chamber, and a supply roller upper-side wall portion that covers the supply roller from above is provided between the toner chamber and the supply roller. This structure prevents the weight of toner stored in the toner chamber from directly acting on the supply roller, enables the toner between the supply roller upper-side wall portion and the supply roller to flow with the rotation of the supply roller, and secures preferable circulation of the toner.

REFERENCES:
patent: 5116712 (1992-05-01), Nakamura et al.
patent: 5137796 (1992-08-01), Takiguchi et al.
patent: 5215845 (1993-06-01), Yusa et al.
patent: 5262267 (1993-11-01), Takiguchi et al.
patent: 5384628 (1995-01-01), Takami et al.
patent: 5718999 (1998-02-01), Suzuki et al.
patent: 5857134 (1999-01-01), Ahn
patent: 6041203 (2000-03-01), Suzuki et al.
patent: 6101350 (2000-08-01), Suzuki et al.
patent: 6256471 (2001-07-01), Sato et al.
patent: 6337956 (2002-01-01), Sato et al.
patent: 6339689 (2002-01-01), Sugiura
patent: 6449442 (2002-09-01), Shida et al.
patent: 6546213 (2003-04-01), Ito et al.
patent: 6594462 (2003-07-01), Ishii et al.
patent: 6708011 (2004-03-01), Nomura et al.
patent: 6801740 (2004-10-01), Ito et al.
patent: 2002/0041778 (2002-04-01), Muto et al.
patent: 2002/0159781 (2002-10-01), Hatori
patent: 2003/0118374 (2003-06-01), Eun et al.
patent: 2004/0053153 (2004-03-01), Yaguchi et al.
patent: 1 031 893 (2000-08-01), None
patent: 1 041 452 (2000-10-01), None
patent: A-4-162049 (1992-06-01), None
patent: 06289705 (1994-10-01), None
patent: 07253709 (1995-10-01), None
patent: 08006386 (1996-01-01), None
patent: 08030099 (1996-02-01), None
patent: A 9-101676 (1997-04-01), None
patent: 09146354 (1997-06-01), None
patent: A 9-160377 (1997-06-01), None
patent: A 9-274423 (1997-10-01), None
patent: A 11-282235 (1999-10-01), None
patent: A 2000-258986 (2000-09-01), None
patent: A-2000-275963 (2000-10-01), None
patent: A 2001-66861 (2001-03-01), None
patent: A-2001-272854 (2001-10-01), None

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