Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1988-09-01
1990-06-12
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, G03G 908
Patent
active
049332503
ABSTRACT:
A magenta toner is disclosed, which comprises a coloring composition comprising a thioindigo pigment, and a xanthene dye having general formula (I) or a laked xanthene dye thereof, and a binder resin: ##STR1## wherein R.sup.1, R.sup.2, R.sup.5, R.sup.6, and R.sup.7 each represent hydrogen or a lower alkyl group; R.sup.3 and R.sup.4 each represent a lower alkyl group; and A.sup.- represents halogen.
REFERENCES:
patent: Re27912 (1974-02-01), Miller
patent: 3392139 (1968-07-01), Dingman
patent: 3954640 (1976-05-01), Lu et al.
patent: 4108786 (1978-08-01), Takayama
patent: 4145300 (1979-03-01), Hendriks
Aoki Mitsuo
Asahina Yasuo
Fushimi Hiroyuki
Makita Kayo
Nakayama Nobuhiro
Ricoh & Company, Ltd.
Welsh J. David
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