Dry color toner for electrophotography and production process th

Details Dry color toner for electrophotography and production process th Dry color toner for electrophotography and production process th

1995-09-18

1998-02-24

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

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

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

430137, G03G 908

Patent

active

057210837

ABSTRACT:
A color toner that is able of forming a projected image having excellent color reproducibility when a toner image is produced on an optically transparent film by electrophotography, and a color toner that is excellent in chargeability and contaminates the developing roller to a minimum extent is provided. A process for producing the toner is also provided, wherein a color toner containing at least a binder resin, a pigment and a charge controller is produced in a first step of preliminarily kneading a blend of the color toner having a haze degree of 1 through 10% and the pigment with an organic solvent at a temperature lower than the melting temperature of the binder resin followed by a second step of thermal melting and kneading with addition of the binder resin and charge controller.

REFERENCES:
patent: 5010114 (1991-04-01), Liang et al.
patent: 5387489 (1995-02-01), Fuller et al.
patent: 5415964 (1995-05-01), Hayashi et al.
patent: 5529871 (1996-06-01), Ichimura et al.
patent: 5578407 (1996-11-01), Kasuya et al.

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