Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1988-08-05
1989-08-08
Martin, Roland E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430108, 252 6257, G03G 914
Patent
active
048552062
ABSTRACT:
Disclosed are carrier particles which comprise magnetically hard ferrite material having a single phase hexagonal crystal structure, and which contain neodymium, praseodymium, samarium, europium, or a mixture thereof, or a mixture of one or more of those elements with lanthanum. Also disclosed in an electrostatic two-component dry developer composition comprising charged toner particles mixed with oppositely charged carrier particles which comprise this hard ferrite material. A method for developing an electrostatic image by contacting the image with a two-component dry developer composition is also disclosed.
REFERENCES:
patent: 3193502 (1965-07-01), Schieber
patent: 4172722 (1979-10-01), Hirakura et al.
patent: 4540645 (1985-09-01), Honda et al.
patent: 4546060 (1985-10-01), Miskiwis et al.
patent: 4623603 (1986-11-01), Iimura et al.
patent: 4636433 (1987-01-01), Kubo et al.
Eastman Kodak Company
Martin Roland E.
Montgomery Willard G.
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