Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1989-09-14
1990-09-18
McCamish, Marion C.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430106, 430109, 430137, 106493, 252 1, 524904, G03G 900, G03G 500, C08K 500, C09K 0000
Patent
active
049578413
ABSTRACT:
Process for specifically influencing the triboelectric effect of azo pigments in electrophotographic toners or developers or in powders for surface coating by adding to the azo pigments at the coupling reaction stage, at the laking stage or in the course of finishing at least one saltlike, cationic compound whose positively charged center is a nitrogen, phosphorus, arsenic or antimony atom or the group ##STR1## and use of such azo pigments for producing toners or developers used for the electrophotographic copying or manifolding of originals or for printing electronically, optically or magnetically stored data or in colorproofing or use of such azo pigments for producing powders or powder coatings used for the surface coating of articles made of metal, wood, plastics, glass, ceramics, concrete, textile material, paper or rubber.
REFERENCES:
patent: 2221776 (1940-11-01), Carlson
patent: 4291122 (1981-09-01), Chin
patent: 4312933 (1982-01-01), Chin
patent: 4324851 (1982-04-01), Lu et al.
patent: 4681829 (1987-07-01), Grushkin
patent: 4758489 (1988-07-01), Tomita et al.
Deubel Reinhold
Macholdt Hans-Tobias
Schui Franz
Sieber Alexander
Crossan S. C.
Hoechst Aktiengesellschaft
McCamish Marion C.
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