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US4448868A
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Electrophotographic photoreceptor with hydrazone derivative
Assignee: Konica Minolta Inc
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Filing: 1983-02-04
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Granted: 1984-05-15
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Expires: 2003-02-04
Abstract
Abstract An electrophotographic photoreceptor having formed on an electrically conductive support a light-sensitive layer containing a hydrazone derivative of formula (I) as a photoconductive material is disclosed: ##STR1## wherein Z is a divalent hydrocarbon group necessary to form in conjunction with a nitrogen atom a 5- or 6-membered nitrogen-containing heterocyclic ring condensed to the benzene ring; R 1 is an aryl group or a heterocyclic group; R 2 is a hydrogen atom, an alkyl group or an aryl group; X is a hydrogen atom, a halogen atom, an alkyl group, a substituted amino group, an alkoxy group or a cyano group; and n is an integer of 0 or 1. This hydrazone derivative exhibits great carrier transporting ability when it is incorporated in the light-sensitive layer.
Inventors
- 👤 Shinichi Suzuki
- 👤 Kiyoshi Sawada
- 👤 Akira Kinoshita
- 👤 Osamu Sasaki
- 👤 Satoshi Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:46
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0635; G03G5/0637; G03G5/0627; G03G5/0629; G03G5/0644; G03G5/0661
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
103 words
An electrophotographic photoreceptor having formed on an electrically conductive support a light-sensitive layer containing a hydrazone derivative of formula (I): ##STR17## wherein Z is a divalent hydrocarbon group necessary to form in conjunction with a nitrogen atom a 5- or 6-membered nitrogen-containing heterocyclic ring condensed to the benzene ring; R 1 is an aryl group or a heterocyclic group; R 2 is a hydrogen atom, an alkyl group or an aryl group; X is a hydrogen atom, a halogen atom, an alkyl group, a substituted amino group, an alkoxy group or a cyano group; and n is an integer of 0 or 1.
Claim 2
Dependent Claim
103 words
An electrophotographic photoreceptor having formed on an electrically conductive support a light-sensitive layer containing a hydrazone derivative of formula (I): ##STR17## wherein Z is a divalent hydrocarbon group necessary to form in conjunction with a nitrogen atom a 5- or 6-membered nitrogen-containing heterocyclic ring condensed to the benzene ring; R 1 is an aryl group or a heterocyclic group; R 2 is a hydrogen atom, an alkyl group or an aryl group; X is a hydrogen atom, a halogen atom, an alkyl group, a substituted amino group, an alkoxy group or a cyano group; and n is an integer of 0 or 1.
Claim 3
Dependent Claim
39 words
A photoreceptor according to claim 1, wherein said hydrazone derivative is a compound having the following formula (II): ##STR18## wherein R 1 , R 2 , X and n each has the same meaning as defined in formula (I).
Claim 4
Dependent Claim
39 words
A photoreceptor according to claim 1, wherein said hydrazone derivative is a compound having the following formula (III): ##STR19## wherein R 1 , R 2 , X and n each has the same meaning as defined in formula (I).
Claim 5
Dependent Claim
32 words
A photoreceptor according to claim 1, which is of a function-separated type wherein the light-sensitive layer on the electrically conductive support contains both a carrier generating material and a carrier transporting material.
Claim 6
Dependent Claim
23 words
A photoreceptor according to claim 1, wherein said light-sensitive layer is an assembly of a carrier generation layer and a carrier transporting layer.
Claim 7
Dependent Claim
21 words
A photoreceptor according to claim 1, wherein said light-sensitive layer has a carrier generating material dispersed in a carrier transporting layer.
Claim 8
Dependent Claim
100 words
A photoreceptor according to claim 1, wherein R 1 in formula (I) is an aryl group selected from the group consisting of a phenyl, naphthyl and anthryl group, a heterocyclic group selected from the group consisting of a furyl, thienyl, indolyl, benzofuryl, benzothienyl and carbazolyl group, each of said aryl and heterocyclic groups being optionally substituted by a substituent selected from the group consisting of an alkyl group, an alkoxy group, a substituted amino group selected from the group consisting of a dialkylamino, diarylamino and alkylarylamino group, a phenyl group, a naphthyl group, a hydroxyl group and a halogen atom.
Claim 9
Dependent Claim
85 words
A photoreceptor according to claim 1, wherein R 2 in formula (I) is a hydrogen atom, an alkyl group, preferably having 1 to 8 carbon atoms, or an aryl group such as a phenyl or naphthyl group, each of said alkyl and aryl groups being optionally substituted by a substituent selected from the group consisting of an alkyl group, an alkoxy group, a substituted amino group selected from the group consisting of a dialkylamino, diarylamino and alkylarylamino group, a hydroxyl group and a halogen atom.
Claim 10
Dependent Claim
28 words
A photoreceptor according to claim 4, wherein one part by weight of said carrier transporting material is combined with 0.8 to 10 parts by weight of a binder.
Claim 11
Dependent Claim
29 words
A photoreceptor according to claim 6, wherein one part by weight of said carrier generating material is combined with not more than 5 parts by weight of a binder.
Claim 12
Dependent Claim
23 words
A photoreceptor according to claim 5, wherein the carrier generation layer is positioned closes to the support than the carrier transporting layer is.
Claim 13
Dependent Claim
32 words
A photoreceptor according to claim 12, which is of a function-separated type wherein the light-sensitive layer on the electrically conductive support contains both a carrier generating material and a carrier transporting material.
Claim 14
Dependent Claim
32 words
A photoreceptor according to claim 3, which is of a function-separated type wherein the light-sensitive layer on the electrically conductive support contains both a carrier generating material and a carrier transporting material.
Claim 15
Dependent Claim
23 words
A photoreceptor according to claim 2, wherein said light-sensitive layer is an assembly of a carrier generation layer and a carrier transporting layer.
Claim 16
Dependent Claim
23 words
A photoreceptor according to claim 3, wherein said light-sensitive layer is an assembly of a carrier generation layer and a carrier transporting layer.
Claim 17
Dependent Claim
21 words
A photoreceptor according to claim 2, wherein said light-sensitive layer has a carrier generating material dispersed in a carrier transporting layer.
Claim 18
Dependent Claim
21 words
A photoreceptor according to claim 3, wherein said light-sensitive layer has a carrier generating material dispersed in a carrier transporting layer.
Claim 19
Dependent Claim
101 words
A photoreceptor according to claim 2, wherein R 1 in formula (I) is an aryl group selected from the group consisting of a phenyl, naphthyl and anthryl group, or a heterocyclic group selected from the group consisting of a furyl, thienyl, indolyl, benzofuryl, benzothienyl and carbazolyl group, each of said aryl and heterocyclic groups being optionally substituted by a substituent selected from the group consisting of an alkyl group, an alkoxy group, a subsituted amino group selected from the group consisting of a dislkylamino, diarylamino and alkylarylamino group, a phenyl group, a naphthyl group, a hydroxyl group and a halogen atom.
Claim 20
Dependent Claim
101 words
A photoreceptor according to claim 3, wherein R 1 in formula (I) is an aryl group selected from the group consisting of a phenyl, naphthyl and anthryl group, or a heterocyclic group selected from the group consisting of a furyl, thienyl, indolyl, benzofuryl, benzothienyl and carbazolyl group, each of said aryl and heterocyclic groups being optionally substituted by a substituent selected from the group consisting of an alkyl group, an alkoxy group, a substituted amino group selected from the group consisting of a dislkylamino, diarylamino and alkylarylamino group, a phenyl group, a naphthyl group, a hydroxyl group and a halogen atom.
Claim 21
Dependent Claim
89 words
A photoreceptor according to claim 2, wherein R 2 in formula (I) is a hydrogen atom, an alkyl group, preferably having 1 to 8 carbon atoms, or an aryl group selected from the group consisting of a phenyl and naphthyl group, each of said alkyl and aryl groups being optionally substituted by a substituent selected from the group consisting of an alkyl group, an alkoxy group, a substituted amino group selected from the group consisting of a dialkylamino, diarylamino and alkylarylamino group, a hydroxyl group and a halogen atom.
Claim 22
Dependent Claim
89 words
A photoreceptor according to claim 3, wherein R 2 in formula (I) is a hydrogen atom, an alkyl group, preferably having 1 to 8 carbon atoms, or an aryl group selected from the group consisting of a phenyl and naphthyl group, each of said alkyl and aryl groups being optionally substituted by a substituent selected from the group consisting of an alkyl group, an alkoxy group, a substituted amino group selected from the group consisting of a dialkylamino, diarylamino and alkylarylamino group, a hydroxyl group and a halogen atom.
Claim 23
Dependent Claim
28 words
A photoreceptor according to claim 5, wherein one part by weight of said carrier transporting material is combined with 0.8 to 10 parts by weight of a binder.
Claim 24
Dependent Claim
28 words
A photoreceptor according to claim 12, wherein one part by weight of said carrier transporting material is combined with 0.8 to 10 parts by weight of a binder.
Claim 25
Dependent Claim
28 words
A photoreceptor according to claim 13, wherein one part by weight of said carrier transporting material is combined with 0.8 to 10 parts by weight of a binder.
Claim 26
Dependent Claim
28 words
A photoreceptor according to claim 14, wherein one part by weight of said carrier transporting material is combined with 0.8 to 10 parts by weight of a binder.
Claim 27
Dependent Claim
28 words
A photoreceptor according to claim 15, wherein one part by weight of said carrier transporting material is combined with 0.8 to 10 parts by weight of a binder.
Claim 28
Dependent Claim
29 words
A photoreceptor according to claim 16, wherein one part by weight of said carrier generating material is combined with not more than 5 parts by weight of a binder.
Claim 29
Dependent Claim
29 words
A photoreceptor according to claim 17, wherein one part by weight of said carrier generating material is combined with not more than 5 parts by weight of a binder.
Claim 30
Dependent Claim
23 words
A photoreceptor according to claim 14, wherein the carrier generation layer is positioned closes to the support than the carrier transporting layer is.
Claim 31
Dependent Claim
23 words
A photoreceptor according to claim 15, wherein the carrier generation layer is positioned closes to the support than the carrier transporting layer is.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |