Negatively chargable toner for electrophotography

Details Negatively chargable toner for electrophotography Negatively chargable toner for electrophotography

1995-12-20

1997-03-18

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

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

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

G03G 9097

Patent

active

056121610

ABSTRACT:
A negatively chargable toner for electrophotography, comprising a binder, a coloring agent and a charge control agent, the charge control agent comprising a copolymer of 1 to 30% by weight of a sulfoalkyl (meth)acrylic acid monomer represented by a specific chemical formula and 99 to 70% by weight of other vinyl monomer copolymerizable therewith, the amount of the charge control agent being from 0.1 to 10 parts by weight for 100 parts by weight of the binder. The toner can be charged immediately, can stably maintain the toner properties, in particular, under the conditions of high temperatures and high humidities, can produce a good image that is free from toner scattering, fogging and the like, and can be made into a color toner capable of clearly forming a colored image.

REFERENCES:
patent: 4994341 (1991-02-01), Adair et al.
patent: 5374495 (1994-12-01), Ata et al.
patent: 5411833 (1995-05-01), Swidler

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