Blade for electrophotographic apparatus

Details Blade for electrophotographic apparatus Blade for electrophotographic apparatus

2006-03-24

2009-11-17

Seidleck, James J. (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C528S048000, C528S060000, C528S065000, C528S080000, C528S085000, C528S084000, C399S350000

Reexamination Certificate

active

07619052

ABSTRACT:
A blade for electrophotographic apparatus which has a blade member formed of a polyurethane resin, wherein the polyurethane resin is a resin produced by using a polyurethane raw-material composition containing at least the following components (A) to (E): (A) a polyisocyanate; (B) a polyol having a number average molecular weight of 2,000 or more and 4,000 or less; (C) a chain extender having a molecular weight of 200 or less: (D) a polyol having a number average molecular weight which is smaller than the number average molecular weight of the component-(B) polyol and is larger than the molecular weight of the component-(C) chain extender; and (E) a urethane curing catalyst.

REFERENCES:
patent: 3779794 (1973-12-01), De Santis
patent: 5866667 (1999-02-01), Suzuki et al.
patent: 6002911 (1999-12-01), Suzuki et al.
patent: 6703472 (2004-03-01), Miura et al.
patent: 2002/0192430 (2002-12-01), Miura et al.
patent: 8-281837 (1996-10-01), None

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