Electrophotographic photoreceptor containing a trisazo compound and a charge transport material
AssigneeFuji Photo Film Co., Ltd.
InventorsSeiji Horie, Naonori Makino, Hideo Sato
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Abstract
An electrophotographic photoreceptor is disclosed, comprising a conductive support having provided thereon a light-sensitive layer, wherein said light-sensitive layer contains a specific trisazo compound as a charge generating material and at least one of specific charge transporting materials. The photoreceptor exhibits high sensitivity and durability.
Claims17
An electrophotographic photoreceptor comprising a conductive support having provided thereon a light-sensitive layer, wherein said light-sensitive layer contains as a charge generating material a trisazo compound represented by formula (I) ##STR64## wherein Cp represents a coupler residue;
- Z.sup.1 represents ##STR65## --O--, --S--, or --Se--, wherein R.sup.6 represents a hydrogen atom, a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted aryloxycarbonyl group, or a substituted or unsubstituted acyl group;
- and B.sup.1, B.sup.2, and B.sup.3 each represents a hydrogen atom, a halogen atom, a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted lower alkoxy group, a substituted or unsubstituted lower alkoxycarbonyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryloxy group, or a substituted or unsubstituted aryloxycarbonyl group;
- and contains as a charge transporting material at least one compound represented by one of formulae (II) to (VI) ##STR66## wherein R.sup.7, R.sup.8, R.sup.14, and R.sup.15 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group;
- or R.sup.7 and R.sup.8 together form a heterocyclic ring, or R.sup.14 and R.sup.15 together form an N-containing heterocyclic ring;
- R.sup.9 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group;
- B.sup.1 and B.sup.2 are the same as defined above;
- R.sup.1 represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted phenyl group;
- R.sup.10 and R.sup.11 each represents a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aralkoxy group, or a substituted or unsubstituted amino group;
- R.sup.16, R.sup.17, R.sup.18, and R.sup.19 each represents a hydrogen atom, a halogen atom, or an alkyl group;
- Ar represents a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group;
- Z.sup.2 represents ##STR67## --O--, --S--, --Se--, or a substituted or unsubstituted methine group;
- Z.sup.3 represents an atomic group forming a benzene ring or a naphthalene ring;
- n represents 0 or 1;
- and A represents a group of the formula ##STR68## wherein l and m represent 0 or an integer of from 1 to 6;
- n represents 0 or 1;
- and B.sup.1 and B.sup.2 are the same as defined above, or B.sup.1 and B.sup.2 together form a condensed polycyclic aromatic ring.
Dependencies are inferred from the claim text.