Photoconductive compositions containing novel disazo compounds and electrophotographic photoreceptors using the same
AssigneeFuji Photo Film Co., Ltd.
InventorsNaonori Makino, Seiji Horie, Kouichi Kawamura, Hideo Sato
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Abstract
Disazo compounds of a specified structure as a photoconductive element for photoreceptors in an electrophotographic process, which achieve higher photosensitivity and higher durability compared with conventional organic photoconductive materials, useful with copying machines, printers, video camera pickup tubes and semiconductor circuits for signal transfer and scanning.
Claims12
A photoconductive composition comprising disazo compound represented by the general formula (1) ##STR31## wherein B.sup.1 and B.sup.2 each represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a lower alkoxycarbonyl group, an aryl group, an aryloxy group, an aryloxycarbonyl group, or a substituted group thereof;
- Z is ##STR32## R.sup.6 is a hydrogen atom, a lower alkyl group, an aryl group, an aryloxy group, an aryloxycarbonyl group or a substituted group thereof;
- A represents ##STR33## X represents a group of atoms which links with the benzene ring to which the hydroxyl group and the Y group are attached to form an aromatic ring or a heterocyclic ring which may be substituted or unsubstituted;
- Y represents ##STR34## R.sup.1 is an alkyl group, a phenyl group, or a substituted group thereof;
- R.sup.2 is a hydrogen atom, a lower alkyl group, a carbamoyl group, a carboxyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, or a substituted or unsubstituted amino group;
- R.sup.3 and R.sup.5 each represents an alkyl group, an aromatic group or a heterocyclic group, or a substituted group thereof;
- and R.sup.4 is a hydrogen atom, an alkyl group, a phenyl group or a substituted group thereof.
An electrophotographic photoreceptor comprising an electrically conductive support and a photoconductive layer provided thereon which comprises a charge transporting substance and a charge generating substance, the charge generating substance being a disazo compound represented by the general formula (1) ##STR36## wherein B.sup.1 and B.sup.2 each represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a lower alkoxycarbonyl group, an aryl group, an aryloxy group, an aryloxycarbonyl group, or a substituted group thereof;
- Z is ##STR37## R.sup.6 is a hydrogen atom, a lower alkyl group, an aryl group, an aryloxy group, an aryloxycarbonyl group or a substituted group thereof;
- a represents ##STR38## X represents a group of atoms which links with the benzene ring to which the hydroxyl group and the Y groups are attached to form an aromatic or heterocyclic ring, which may be substituted or unsubstituted;
- Y represents ##STR39## R.sup.1 is an alkyl group, a phenyl group, or a substituted group thereof;
- R.sup.2 is a hydrogen atom, a lower alkyl group, a carbamoyl group, a carboxyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, or a substituted or unsubstituted amino group;
- R.sup.3 and R.sup.5 each represents an alkyl group, an aromatic group or a heterocyclic group, or a substituted group thereof;
- and R.sup.4 is a hydrogen atom, an alkyl group, a phenyl group, or a substituted group thereof;
- on an electrically conductive support.
Dependencies are inferred from the claim text.