Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
272 words
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 6 ; R 1 and R 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 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 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.
Claim 2
Dependent Claim
272 words
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 6 ; R 1 and R 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 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 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.
Claim 3
Dependent Claim
53 words
An electrophotographic photoreceptor as in claim 1, wherein at least one of the groups represented by R 1 R 2 , R 6 and R 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.
Claim 4
Dependent Claim
61 words
An electrophotographic photoreceptor as in claim 1, wherein at least one of the groups represented by R 1 R 2 , R 6 and R 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.
Claim 5
Dependent Claim
41 words
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.
Claim 6
Dependent Claim
32 words
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.
Claim 7
Dependent Claim
34 words
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.
Claim 8
Dependent Claim
34 words
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.
Claim 9
Dependent Claim
29 words
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.
Claim 10
Dependent Claim
36 words
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.
Claim 11
Dependent Claim
18 words
An electrophotographic photoreceptor as in claim 1, wherein said light-sensitive layer comprises said hydrazone compound in a binder.