Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Patent
1980-01-14
1981-12-08
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
430110, 361226, G03G 910
Patent
active
043048307
ABSTRACT:
This invention is directed to positively charged toners comprised of a resin, a colorant, and an additive possessing an anion, and more specifically, an alkyl pyridinium compound and its corresponding hydrate, of the formulas ##STR1## wherein A is an anion, which in a preferred embodiment is selected from halides such as fluoride, chloride, bromide, or iodide; sulfate, sulfonate, nitrate borate, and phosphate; R is a hydrocarbon radical containing from about 8 to about 22 carbon atoms and preferably from 12 to 18 carbon atoms. An important embodiment of the present invention is directed to a process for rapidly charging (or admixing) uncharged dry electrostatographic toner, containing the alkyl pyridinium compounds of the above formulas, subsequent to its addition to previously charged developer, whereby the uncharged toner particles acquire a charge within a period of from about 1 minute to about 5 minutes. The toners of this invention are useful for developing images of high quality in an electrostatographic imaging system.
REFERENCES:
patent: 3069428 (1962-12-01), Fitzpatrick
patent: 3632617 (1972-01-01), Suzuki et al.
patent: 3893935 (1975-07-01), Jadwin et al.
patent: 3944493 (1976-03-01), Jadwin et al.
patent: 3970571 (1976-07-01), Olson et al.
patent: 3985664 (1976-10-01), Sakaguchi et al.
patent: 4007293 (1977-02-01), Mincer
patent: 4079014 (1978-03-01), Burness et al.
IBM Technical Disclosure Bulletin, vol. 13, #6, Nov. 1970, p. 1682.
Bolte Steven B.
Connors Edward W.
Gruber Robert J.
Koehler, Jr. Richard F.
Goodrow John L.
Palazzo E. O.
Schilling Richard L.
Xerox Corporation
LandOfFree
Toner additives does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Toner additives, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toner additives will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-568169