Process for preparing dispersion liquid containing organic, phot

Details Process for preparing dispersion liquid containing organic, phot Process for preparing dispersion liquid containing organic, phot

1988-06-01

1990-01-23

Goodrow, John L.

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 76, 430135, G03G 510

Patent

active

048957828

ABSTRACT:
A process for preparing a dispersion liquid containing an organic photoconductive azo pigment by use of a solvent is provided which comprises subjecting the azo pigment to a heating treatment in a ketone type solvent as a dispersion pretreatment. The azo pigment is characterized by the general formula (1) wherein R.sub.1 represents a hydrogen atom or a substituted or unsubstituted alkyl group and A represents a coupler residue having a phenolic hydroxyl group.

REFERENCES:
patent: 4743523 (1988-05-01), Yamashita et al.
patent: 4760003 (1988-07-01), Matsumoto et al.

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