Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1994-07-18
1996-06-25
Chapman, Mark
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430137, G03G 900
Patent
active
055298710
ABSTRACT:
A color toner providing a toner image excellent in brightness, clearness and graininess and a process for producing the same are disclosed, wherein a proportion of dispersed pigment particles having a circle-equivalent diameter of 0.3 .mu.m or greater does not exceed 0.1% of the total number of said dispersed pigment particles. The process comprises kneading a water-containing pigment paste and a binder resin at a temperature of 100.degree. C. or higher under pressure in a heat and pressure kneader to remove a water content to obtain a pigment dispersion, melt-kneading the resulting pigment dispersion together with a binder resin, and grinding the mixture.
REFERENCES:
patent: 4865937 (1989-09-01), Santilli et al.
patent: 5262268 (1993-11-01), Bertrand et al.
Akagi Hideyuki
Fukushima Koji
Ichimura Masanori
Imai Takashi
Inoue Satoshi
Chapman Mark
Fuji 'Xerox Co., Ltd.
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