Electrophotographic photoreceptor comprising bis-azo pigment

Details Electrophotographic photoreceptor comprising bis-azo pigment Electrophotographic photoreceptor comprising bis-azo pigment

1987-01-20

1987-10-27

Welsh, J. David

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 76, 430 58, G03G 506, G03G 514

Patent

active

047029838

ABSTRACT:
An electrophotographic photoreceptor excellent in properties after repeated use and durability is provided by containing a bis-azo pigment represented by the following general formula [I] or [II] in the light-sensitive layer on the conductive support: ##STR1## wherein X represents --O--, --S--or >N--R.sub.4 wherein R.sub.4 represents a hydrogen atom, an alkyl group or an aralkyl group, R.sub.1, R.sub.2 and R.sub.3 each represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group or a group of atoms necessary to form a condensed ring by combination of two or them, Y.sub.1 and Y.sub.2 each represent a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, A represents a coupler residue necessary to produce an azo pigment and n is 0 or 1; ##STR2## wherein Y.sub.1 and Y.sub.2 each represent a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, R.sub.1 and R.sub.2 each represent a hydrogen atom, an alkyl group, an alkoxy group or a group of atoms necessary to form a condensed ring by combination of them, A represents a coupler residue necessary to produce an azo pigment and n is 0 or 1.

REFERENCES:
patent: 4582771 (1986-04-01), Ohta

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