Developer carrying member for carrying developer, apparatus unit

Details Developer carrying member for carrying developer, apparatus unit Developer carrying member for carrying developer, apparatus unit

1998-03-31

2000-09-19

Lee, Susan S. Y.

Electrophotography

Image formation

Development

399265, 399267, 399279, 430105, 4301066, 430107, 430112, 492 56, G03G 1508

Patent

active

061224731

ABSTRACT:
A developer carrying member for carrying a developer is includes a substrate and a resin coat layer which is formed on the surface of the substrate and contains a binder resin and a conductive fine powder. The binder resin is composed of a copolymer having a monomeric unit of a methyl methacrylate monomer (M) and a monomeric unit of a nitrogen-containing vinyl monomer (N). A copolymerization molar ratio of the methyl methacrylate monomer (M) to the nitrogen-containing vinyl monomer (N) in the copolymer fulfills the following condition: M:N=4:1 to 999:1. The binder resin has a weight-average molecular weight (Mw) of from 3,000 to 50,000.

REFERENCES:
patent: 5175586 (1992-12-01), Goseki et al.
patent: 5215845 (1993-06-01), Yusa et al.
patent: 5274426 (1993-12-01), Goseki et al.
patent: 5618647 (1997-04-01), Sukimoto et al.
patent: 5663022 (1997-09-01), Malhotra
patent: 5897477 (1999-04-01), Nakatogawa et al.
Patent Abstracts of Japan, vol. 006, No. 027 (P-102), Feb. 17, 1982.

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