Particulate electrophotographic toner material

Details Particulate electrophotographic toner material Particulate electrophotographic toner material

1990-03-13

1991-01-29

Welsh, David

Radiation imagery chemistry: process, composition, or product th

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

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

430115, 4301066, 430903, G03G 908

Patent

active

049886002

ABSTRACT:
Particulate toner material for use in the development of latent electrostatic images, wherein said particulate toner material is capable of acquiring by triboelectric contact electrification a net positive charge and contains thermoplastic resin(s) as binder in combination with a colorant and a colorless compound capable of imparting a positive charge to the particulate toner material in contact electrification, wherein said colorless compound contains at least one piperidine nucleus substituted with an --NH-acyl group, N-substituted ureido or N-substituted thioureido group.

REFERENCES:
patent: 4812379 (1989-03-01), Harnish
patent: 4927792 (1990-05-01), Harnish

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