Electrographic liquid developers containing azo dye marking part

Details Electrographic liquid developers containing azo dye marking part Electrographic liquid developers containing azo dye marking part

1978-04-03

1979-03-20

Pitlick, Harris A.

Compositions

Electrolytes for electrical devices

260185, G03G 912

Patent

active

041452992

ABSTRACT:
An electrographic liquid developer comprising a carrier liquid and a marking particle which comprises a dye compound having the formula: ##STR1## wherein: R.sup.1 is H, COOH, CONH.sub.2, --SO.sub.2 NH.sub.2 or --SO.sub.3 M where M is Na.sup.+ or NH.sub.4 ;

REFERENCES:
patent: 3077402 (1963-02-01), Blout et al.
patent: 3253913 (1966-05-01), Smith et al.
patent: 3334085 (1967-08-01), Geselbracht
patent: 3781208 (1973-12-01), Ueda et al.

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