Electrophotographic photoreceptor for negative electrification

Details Electrophotographic photoreceptor for negative electrification Electrophotographic photoreceptor for negative electrification

1988-08-04

1990-05-15

Welsh, J. David

Radiation imagery chemistry: process, composition, or product th

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

430 57, 430 70, 430 56, G03G 507

Patent

active

049257579

ABSTRACT:
An electrophotographic photoreceptor useful for negative electrification is disclosed. The photoreceptor comprises on an electroconductive substrate, a photo-sensitive layer containing a compound represented by general formula [A]: ##STR1## wherein, R.sub.1 represents a hydrogen atom or a substituent; R.sub.2 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; Ar.sub.1 represents a hydrogen atom, a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group; Ar.sub.2 represents a substituted or unsubstituted phenylene group or a substituted or unsubstituted naphthylene group; Ar.sub.3 and Ar.sub.4 independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted phenyl group or a substituted or unsubstituted naphthyl group; and n represents an integer of 0 or 1; and a compound containing in its chemical structure a hindered phenolic structure unit.

REFERENCES:
patent: 3861912 (1975-01-01), Ibrahim
patent: 4515883 (1985-05-01), Sasaki
patent: 4572884 (1986-02-01), Sasaki
patent: 4709096 (1987-11-01), Sasaki

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