Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1992-09-08
1994-07-19
Martin, Roland
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430116, 430114, 430137, 355233, 355257, G03G 909, G03G 9125
Patent
active
053308689
ABSTRACT:
An electrographic liquid developer includes a fluorescent toner diluted in a liquid developer vehicle which has a high flash point and a low vapor pressure. The liquid developer vehicle preferably is a mixed liquid alkane which has a flash point over 140.degree. F. and a vapor pressure less than 5.2 mm of mercury at 38.degree. C. The fluorescent toner is preferably made as follows:
a solution is prepared which comprises an organic solvent, a fluorescent dye, and an organic polymer. A pigment is precipitated by mixing the solution with a non-solvent for the polymer in the presence of a dispersant. The pigment is melt-compounded with a polymeric organic binder and the melt-compounded mixture is comminuted.
REFERENCES:
patent: 4308327 (1981-12-01), Bird et al.
patent: 4741643 (1973-06-01), Smith et al.
patent: 4865937 (1989-09-01), Santilli et al.
patent: 5192638 (1993-03-01), Landa et al.
May John W.
Santilli Domenic
Eastman Kodak Company
Martin Roland
Noval William F.
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