Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1992-08-18
1995-01-17
Rosasco, S.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430109, G03G 900
Patent
active
053824903
ABSTRACT:
An electrophotographic toner containing a specific compound as the charge control agent is described. The electrophotographic toner according to the present invention have a sharper distribution of charge and better moisture resistance and charge durability than those of a toner wherein a conventional charge control agent is used. Therefore it can provide an image having a very high gradation and has a very high capability of repeatedly forming an image. Since the charge control agent, as such, is essentially colorless, a colorant can freely be selected according to a hue required of a color toner and the toner is not detrimental to the hue inherent in a dye and a pigment. The charge control agent is highly safe to environment.
REFERENCES:
patent: 1926874 (1933-09-01), Klarmann et al.
patent: 4147645 (1979-04-01), Lu
patent: 4480021 (1984-10-01), Lu et al.
patent: 5017728 (1991-05-01), McKinnie et al.
Kiyoyanagi Tadayuki
Nomura Masaharu
Yamamoto Junko
Yamamura Shigeo
Nippon Kayaku Kabushiki Kaisha
Rosasco S.
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