Electrophotography – Internal machine environment – Particle or contaminant control
Reexamination Certificate
2006-02-07
2008-12-09
Gray, David M (Department: 2852)
Electrophotography
Internal machine environment
Particle or contaminant control
C399S105000, C399S274000, C399S284000
Reexamination Certificate
active
07463843
ABSTRACT:
A developing device includes toner, a casing accommodating the toner, a developing roller rotatably fixed on the casing, an elastic blade making contact with a circumferential surface of the developing roller, a seal member, and a cutout portion in the seal member. The seal member is arranged to make contact with a circumferential surface of end portions of the developing roller between the developing roller and a wall surface of the casing and to make contact with an end surface of a tip end of the elastic blade. The cutout portion is arranged on the seal member and is cut out at a potion at a side making contact with a side surface of the tip end of the elastic blade in an axial direction of the developing roller and a side located closer to the wall surface of the casing than the elastic blade in a radial direction of the developing roller.
REFERENCES:
patent: 5057868 (1991-10-01), Sekino et al.
patent: 5134960 (1992-08-01), Shirai
patent: 5870651 (1999-02-01), Shimada
patent: 2-44751 (1990-03-01), None
patent: 05-107894 (1993-04-01), None
patent: 06-011958 (1994-01-01), None
patent: 08106216 (1996-04-01), None
patent: 2000181223 (2000-06-01), None
patent: 2001-289327 (2001-10-01), None
Official communication issued in counterpart Japanese Application No. 2005-065893, mailed on Jul. 29, 2008.
Gray David M
Keating & Bennett LLP
Murata Machinery Ltd.
Walsh Ryan D
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