Electrophotographic toner for high speed electrophotography

Details Electrophotographic toner for high speed electrophotography Electrophotographic toner for high speed electrophotography

1987-10-08

1989-08-15

Welsh, J. David

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

430109, G03G 1308

Patent

active

048574333

ABSTRACT:
An electrophotographic toner, which can exhibit good fixation in high-speed copying and is not affected by an environment such as high humidity, is provided by containing, as a principal component thereof, a resin blend composed of (a) 40-90 wt. % of a vinyl copolymer (I) formed of 70-97 wt. % of an aromatic vinyl monomer, 3-30 wt. % of an alkyl fumarate which is an C.sub.1-8 monoalkyl or dialkyl ester and 0-5 wt. % of an acid monomer and having a number average molecular weight of 2,000-15,000 and (b) 10-60 wt. % of a vinyl polymer (II) having a number average molecular weight of 20,000-500,000.

REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 4246332 (1981-01-01), Tanaka
patent: 4298672 (1981-11-01), Lu
patent: 4331755 (1982-05-01), Gilliams

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