Cleaning blade, process cartridge containing same and electropho

Details Cleaning blade, process cartridge containing same and electropho Cleaning blade, process cartridge containing same and electropho

1994-04-28

1996-04-23

Beatty, Robert

Photocopying

Contact printing

Light boxes

G03G 2100

Patent

active

055108873

ABSTRACT:
A cleaning blade is formed of a polyurethane elastomer obtained by using a hardener composition including at least trimethylolpropane. The polyurethane elastomer has the properties of (1) a trimethylolpropane concentration of at least 0.10 mM/g; (2) a urethane group concentration of at least 2.20 mM/g; and (3) a tan.delta. having a maximum value at a temperature of at most 12.degree. C.

REFERENCES:
patent: 5080976 (1992-01-01), Yanai et al.
patent: 5145724 (1992-09-01), Yanai et al.
patent: 5157098 (1992-10-01), Lindblad et al.
patent: 5162858 (1992-11-01), Shoji et al.
patent: 5260756 (1993-11-01), Yanai et al.

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