Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1997-08-13
2000-01-04
Rodee, Christopher D.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430108, 430111, 430 45, 430122, G03G 9107
Patent
active
060108118
ABSTRACT:
A two-component type developer for developing an electrostatic image is constituted by at least a toner and a magnetic carrier. The toner has a weight-average particle size D4 of at most 10 .mu.m and a number-average particle size D1 satisfying D4/D1.ltoreq.1.5. The magnetic carrier comprises composite particles comprising magnetic iron compound particles, non-magnetic metal oxide particles, and a binder comprising a phenolic resin. The composite particles contain the magnetic iron compound and the non-magnetic metal oxide in a total proportion of 80-99 wt. %. The magnetic iron compound particles have a number-average particle size ra, and the non-magnetic metal oxide particles have a number-average particle size r.sub.b satisfying r.sub.b /r.sub.a >1.0.
REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 3666363 (1972-05-01), Tanaka et al.
patent: 4071361 (1978-01-01), Marushima
patent: 5108862 (1992-04-01), Kishimoto et al.
patent: 5164774 (1992-11-01), Tomita et al.
patent: 5319424 (1994-06-01), Tomiyama et al.
patent: 5340677 (1994-08-01), Baba et al.
patent: 5346791 (1994-09-01), Ozawa et al.
patent: 5439771 (1995-08-01), Baba et al.
patent: 5464720 (1995-11-01), Baba et al.
patent: 5470687 (1995-11-01), Mayama et al.
patent: 5482806 (1996-01-01), Suzuki et al.
patent: 5654120 (1997-08-01), Hakata et al.
Diamond, Arthur S. (editor) Handbook of Imaging Materials. New York: Marcel--Dekker, Inc. p. 178. 1991.
Patent Abstracts of Japan, vol. 13, No. 368 (P-919) Aug. 1989 for JP 1-124868.
Patent Abstracts of Japan, vol. 6, No. 255 (P-154) [1103] Nov. 1982 for for JP-57-128347.
Patent Abstracts of Japan, vol. No. 14, No. 88 (P-1008) [4031] Feb. 1990 for JP 1-297657.
Database WPI, Section Ch., Week 9224, Derwent Publications, AN 92-196183 JP 4-124677.
Baba Yoshinobu
Tokunaga Yuzo
Canon Kabushiki Kaisha
Rodee Christopher D.
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