Powdered electrostatic image developing toner

Details Powdered electrostatic image developing toner Powdered electrostatic image developing toner

1989-05-19

1990-06-05

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...

430 99, 430120, G03G 908

Patent

active

049313754

ABSTRACT:
Disclosed is a toner powder for developing latent electrostatic images comprising as a binder for pigment material a block or graft copolymer composed of a crystalline polyester and an amorphous vinyl polymer. The amorphous vinyl polymer has at least two peaks in its molecular weight distribution curve. One is between 100,000 and 1,000,000 and another is between 2000 and 20,000.

REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 3268351 (1966-08-01), Van Dorn
patent: 4287280 (1981-09-01), Swift
patent: 4288517 (1981-09-01), Arimatsu et al.
patent: 4528257 (1985-07-01), Polderman et al.

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