Claims
- 1. An electrophotographic photoreceptor comprising a conductive support with a light-sensitive layer thereon containing a hydrazone compound represented by formula (III): ##STR12## wherein X represents O, S or >N--R.sup.6 ; R.sup.1 and R.sup.2 each represents a non-substituted or a substituted straight or branched chain alkyl group containing from 1 to 12 carbon atoms, a non-substituted or a substituted straight or branched chain aralkyl group containing from 7 to 20 carbon atoms, or a non-substituted or a substituted aryl group, the aryl group including monovalent residues of monocyclic aromatic rings and condensed polycyclic aromatic rings having from 2 to 4 rings therein; R.sup.7 represents hydrogen, a non-substituted or a substituted straight or branched chain alkyl group containing from 1 to 12 carbon atoms, a non-substituted or a substituted straight or branched chain aralkyl group containing from 7 to 20 carbon atoms, a straight or a branched chain alkoxy group containing from 1 to 4 carbon atoms, an aryloxy group containing from 6 to 10 carbon atoms, an acyl group containing from 2 to 8 carbon atoms, an alkoxycarbonyl group containing from 2 to 5 carbon atoms, a halogen atom, a nitro group, a monoalkylamino group whose alkyl moiety contains from 1 to 4 carbon atoms, a dialkylamino group whose alkyl moiety contains from 1 to 4 carbon atoms, or an amido group containing from 2 to 8 carbon atoms; and R.sup.6 represents a non-substituted or a substituted straight or branched chain alkyl group containing from 1 to 12 carbon atoms, or a non-substituted or a substituted straight or branched chain aralkyl group containing from 1 to 12 carbon atoms.
- 2. An electrophotographic photoreceptor as in claim 1, wherein at least one of the groups represented by R.sup.1 R.sup.2, R.sup.6 and R.sup.7 has a substituent group, and the substituent group is selected from a halogen atom, an alkoxy group, an aryloxy group, a dialkylamino group, and an alkylthio group.
- 3. An electrophotographic photoreceptor as in claim 1, wherein at least one of the groups represented by R.sup.1 R.sup.2, R.sup.6 and R.sup.7 is an aryl group which has a substituent group, and the substituent group is selected from a halogen atom, an alkoxy group, an aryloxy group, a dialkylamino group, an alkylthio group, and an alkyl group.
- 4. An electrophotographic photoreceptor as in claim 1, 2, or 3, wherein said light-sensitive layer being formed of (1) a charge transport medium comprising said hydrazone compound and a binder, and (2) a charge generating substance dispersed in said charge transport medium.
- 5. An electrophotographic photoreceptor as in claim 1, 2, or 3, wherein said light-sensitive layer is formed of (1) a charge transport layer containing said hydrazone compound and (2) a charge generating layer.
- 6. An electrophotographic photoreceptor as in claim 1, wherein the amount of said hydrazone compound in said light-sensitive layer ranges from 30% to 70% by weight, based on the total weight of said light-sensitive layer.
- 7. An electrophotographic photoreceptor as in claim 1, wherein said light-sensitive layer contains a sensitizing dye in an amount of from 0.1% to 5% by weight, based on the total weight of said light-sensitive layer.
- 8. An electrophotographic photoreceptor as in claim 4, wherein said light-sensitive layer contains 10 to 95% of the hydrazone compound and 50 wt% or less of the charge generating substance.
- 9. An electrophotographic photoreceptor as in claim 5, wherein the amount of said hydrazone compound in said charge transport layer ranges from 10 wt% to 95 wt%, based on the total weight of said charge transport layer.
- 10. An electrophotographic photoreceptor as in claim 1, wherein said light-sensitive layer comprises said hydrazone compound in a binder.
Priority Claims (1)
Number |
Date |
Country |
Kind |
55-85495 |
Jun 1980 |
JPX |
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Parent Case Info
This is a division of application Ser. No. 276,745, filed June 24, 1981, now U.S. Pat. No. 4,403,025.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
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Parent |
276745 |
Jun 1981 |
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