Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1987-09-29
1989-06-06
Goodrow, John L.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430107, G03G 910
Patent
active
048371009
ABSTRACT:
A positively chargeable electrophotographic developer is disclosed, comprising a carrier, toner particles positively chargeable by friction with the carrier, fine particles of hydrophilic alumina, and fine particles of one of tin oxide, hydrophobic silica and titanium dioxide. The developer hardly undergoes toner cloud or toner dropping during development and suffers neither extreme deterioration in charging properties nor fog formation even when used for taking a large number of copies.
REFERENCES:
patent: 3557255 (1971-01-01), Sharkey
patent: 3585257 (1971-06-01), Mueller et al.
patent: 4543312 (1985-09-01), Murakawa et al.
patent: 4699865 (1987-10-01), Mitsuhashi
Murofushi Toshiaki
Nakazawa Hiroshi
Ohya Yasuhiro
Oyamada Koichi
Fuji 'Xerox Co., Ltd.
Goodrow John L.
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