Photoconductive imaging members with unsymmetrical squaraine compounds containing an hydroxyl group
AssigneeXerox Corporation
InventorsPeter M. Kazmaier, Richard A. Burt, Giuseppa Baranyi
Life of this patent
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Abstract
Disclosed are unsymmetrical squaraine compounds of the following formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently selected from the group consisting of alkyl, aryl heterocyclic, benzyl, and halobenzyl; and X.sub.1, X.sub.2 and X.sub.3 are independently selected from the group consisting of hydrogen, alkyl, halogen, carboxy, and hydroxy; and photoresponsive imaging members having incorporated therein the aforementioned squaraine compounds.
Claims49
An improved photoresponsive imaging member comprised of (1) a supporting substrate, (2) a photoconductive layer comprised of the unsymmertical squaraine compounds selected from the group consisting of (4-dimethylaminophenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylaminophenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine;
- (4-dimethylaminophenyl) (9-(8-hydroxyjulolidinyl) squaraine;
- (4-dimethylamino-2-methylphenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylamino-2-methylphenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine;
- (4-dimethylamino-2-fluorophenyl) (4-methylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylamino-2-fluorophenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine;
- and (2,6-dihydroxy-4-dimethylaminophenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- and (3) a hole transport layer comprised of aryl amine molecules dispersed in a resinous binder.
An improved photoresponsive imaging member comprised of (1) a supporting substrate, (2) a hole blocking layer, (3) an inorganic photogenerating layer, (4) a photoconductive layer comprised of the unsymmetrical squaraine compounds selected from the group consisting of (4-dimethylaminophenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylaminophenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine;
- (4-dimethylaminophenyl) (9-(8-hydroxyjulolidinyl) squaraine;
- (4-dimethylamino-2-methylphenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylamino-2-methylphenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine;
- (4-dimethylamino-2-fluorophenyl) (4-methylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylamino-2-fluorophenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine;
- and (2,6-dihydroxy-4-dimethylaminophenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- and (5) a hole transport layer comprised of aryl amine molecules dispersed in a resinous binder.
An improved photoresponsive imaging member comprised of (1) a supporting substrate, (2) a hole blocking layer, (3) a photoconductive layer comprised of the unsymmetrical squaraine compounds selected from the group consisting of (4-dimethylaminophenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylaminophenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine;
- (4-dimethylaminophenyl (9-(8-hydroxyjulolidinyl) squaraine;
- (4-dimethylamino-2-methylphenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylamino-2-methylphenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine;
- (4-dimethylamino-2-fluorophenyl) (4-methylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylamino-2-fluorophenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine;
- and (2,6-dihydroxy-4-dimethylaminophenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- (4) an inorganic photogenerating layer, and (5) a diamine hole transport layer comprised of aryl amine molecules dispersed in a resinous binder.
A photoresponsive imaging member consisting essentially of (1) a supporting substrate;
- (2) a photoconductive layer containing an unsymmetrical squaraine compound selected from the group consisting of (4-dimethylaminophenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylaminophenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine;
- (4-dimethylaminophenyl) (9-(8-hydroxyjulolidinyl) squaraine;
- (4-dimethylamino-2-methylphenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylamino-2-methylphenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine;
- (4-dimethylamino-2-fluorophenyl) (4-methylamino-2-hydroxyphenyl) squaraine;
- (4-dimethylamino-2-fluorophenyl) (2,6-dihydroxy-4-dimethylaminophenyl) squaraine, and (2,6-dihydroxy-4-dimethylaminophenyl) (4-dimethylamino-2-hydroxyphenyl) squaraine;
- and (3) a hole transport layer comprised of aryl amine molecules dispersed in a resinous binder.
Dependencies are inferred from the claim text.