Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1990-06-06
1993-05-04
McCamish, Marion E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
G03G 900
Patent
active
052081303
ABSTRACT:
A liquid developer system for use in electrostatic imaging processes of the positive toner type comprises toner particles micro-dispersed in a carrier liquid and at least one charge director compound soluble in the carrier liquid, wherein the total amount of charge director compound is associated with the toner particles and essentially no charge director compound is present in the carrier liquid. Especially useful charge director compounds are those which have been reacted with at least about one molar equivalent of at least one acid containing at least one organic moiety, the acid being effective in that the reacted positive charge director compound increases the short-term charging of the micro-dispersed toner particles as compared with charging when the same molar amount of unreacted charge director compound is used. Positive charge director compounds reacted with acid are e.g. those of the general formula RSiX.sub.3 wherein R is a hydrocarbon radical, one or more of the hydrogen atoms of which may be substituted by halogen atomsoms, and X is halogen or lower alkoxy; the reaction products with acid of the compounds RSiX.sub.3 are believed to be novel.
REFERENCES:
patent: 3441537 (1969-04-01), Lengnick
patent: 3729419 (1973-04-01), Honjo et al.
patent: 3841893 (1974-10-01), Honjo et al.
patent: 4469881 (1984-09-01), Arkles
patent: 4746751 (1988-05-01), Oviatt, Jr. et al.
patent: 4860924 (1989-08-01), Simms et al.
patent: 4891286 (1990-01-01), Gibson
patent: 4902570 (1990-02-01), Heinemann et al.
patent: 5045425 (1991-09-01), Swidler
patent: 5066821 (1991-11-01), Houle et al.
Almog Yaacov
Avadik Frida
Crossman Stephen C.
McCamish Marion E.
Spectrum Sciences B.V.
LandOfFree
Charge director compositions for liquid developer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Charge director compositions for liquid developer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charge director compositions for liquid developer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1974555