Positively chargeable toners for use in dry type electrophotogra

Details Positively chargeable toners for use in dry type electrophotogra Positively chargeable toners for use in dry type electrophotogra

1985-07-18

1989-04-18

Welsh, J. David

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

430109, 430110, G03G 908

Patent

active

048227072

ABSTRACT:
The present invention provides a positively chargeable for use in dry type electrophotography that contains, as a charge controlling agent, a lake (blue pigment) of a compound represented by the general formula: ##STR1## [Wherein, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are H, CnH.sub.2 n+1(n is an integer of 1-5) or ##STR2## These R.sub.1 -R.sub.6 may be the same or different].

REFERENCES:
patent: Re27912 (1974-02-01), Miller
patent: 3165420 (1965-01-01), Tomanek
patent: 3949116 (1976-04-01), Lawson
patent: 3990980 (1976-11-01), Kosel
patent: 4005022 (1977-01-01), Vijayendran
patent: 4021358 (1977-03-01), Tomono et al.
Color Index, Soc. of Dyers & Colorists, 1971, pp. 4412-4413.

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