Developing blade and its manufacturing method

Details Developing blade and its manufacturing method Developing blade and its manufacturing method

2011-08-23

2011-08-23

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

C399S249000, C399S264000, C264S279000

Reexamination Certificate

active

08005408

ABSTRACT:
A developing blade (1) comprises a support member (2) having a coefficient of elasticity in the range of 0.5×104to 4.0×104kg/mm2and a moment of inertia of area (Iz) in the range of 6.5E-04 to 1.2E-02, and a blade member (4) located on one surface of the support member (2) along one side edge (2A). The blade member (4) is made of a rubber material having a 25% modulus of no greater than 0.85 MPa, and has a moment of inertia of area (Iz) in the range of 8E-02 to 1.2E+01, and the blade member (4) has a warping of no greater than 10 mm in the longitudinal direction.

REFERENCES:
patent: 5278616 (1994-01-01), Hirano et al.
patent: 2004/0120734 (2004-06-01), Okamoto
patent: 2008/0145662 (2008-06-01), Nakamura et al.
patent: 6 202459 (1994-07-01), None
patent: 11 288166 (1999-10-01), None
patent: 2005 274646 (2005-10-01), None
U.S. Appl. No. 12/281,150, filed Aug. 29, 2008, Souma, et al.

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