Encapsulated toner for heat-and-pressure fixing and method for p

Details Encapsulated toner for heat-and-pressure fixing and method for p Encapsulated toner for heat-and-pressure fixing and method for p

1997-01-17

1998-03-31

Lesmes, George F.

Radiation imagery chemistry: process, composition, or product th

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

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

430137, 430138, G03G 900

Patent

active

057337004

ABSTRACT:
The present invention is directed to an encapsulated toner for heat-and-pressure fixing whose shell contains a copolymer having one or more acid anhydride groups as the main component. The encapsulated toner of the present invention has excellent offset resistance and fixing ability even at a low fixing temperature, and also it is excellent in blocking resistance. Further, since the resin having a negative charge is used as a shell material, clear images free from background contamination can be stably formed for a large number of copying.

REFERENCES:
patent: 4450221 (1984-05-01), Terada et al.
patent: 4888264 (1989-12-01), Matsumoto et al.
Patent Abstracts of Japan, vol. 8, No. 151 (P-286) (1588), 13 Jul. 1984 & JP-A-59 048 772.
Patent Abstracts of Japan, vol. 9, No. 207 (P-382) 24 Aug. 1985 & JP-A-60 069 659.
Database WPI, Week 8445, Derwent Publications Ltd. AN 84-278570 (45) & JP-A-59 170 856.
Patent Abstracts of Japan, vol. 10, No. 220 (P-482) (2276) 31 Jul. 1986 & JP-A-61 056 352.

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