US4842970A
Expired / Lapsed
US
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Electrophotographic plate containing a naphthalocyanine compound
Assignee: YKK Corp
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Filing: 1988-04-20
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Granted: 1989-06-27
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Expires: 2008-04-20
Abstract
Abstract There is disclosed an electrophotographic plate comprising an electroconductive supporting substrate and a photoconductive layer formed thereon, wherein the photoconductive layer contains an organic photoconductive material as a charge generation material, said organic photoconductive material being a naphthalocyanine compound represented by the formula ##STR1## or the general formula ##STR2## wherein M denotes one member selected from the group consisting of Cu, Zn, Mg, OTi, OV, ClAl ClGa, ClIn, Cl 2 Si, Cl 2 Ge, and Cl 2 Sn.
Inventors
- 👤 Seiji Tai
- 👤 Shigeru Hayashida
- 👤 Nobuyuki Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:57
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
75 words
An electrophotographic plate comprising an electroconductive supporting substrate and a photoconductive layer formed thereon, wherein the photoconductive layer contains an organic photoconductive material as a charge generation material, said organic photoconductive material being a naphthalocyanine compound represented by the formula ##STR6## or the general formula ##STR7## wherein M denotes one member selected from the group consisting of Cu, Zn, Mg, OTi, OV, ClAl, ClGa, ClIn, Cl 2 Si, Cl 2 Ge, and Cl 2 Sn.
Claim 2
Dependent Claim
75 words
An electrophotographic plate comprising an electroconductive supporting substrate and a photoconductive layer formed thereon, wherein the photoconductive layer contains an organic photoconductive material as a charge generation material, said organic photoconductive material being a naphthalocyanine compound represented by the formula ##STR6## or the general formula ##STR7## wherein M denotes one member selected from the group consisting of Cu, Zn, Mg, OTi, OV, ClAl, ClGa, ClIn, Cl 2 Si, Cl 2 Ge, and Cl 2 Sn.
Claim 3
Dependent Claim
34 words
The electrophotographic plate of claim 1, wherein the photoconductive layer is a complex type comprising a charge generation layer containing the naphthalocyanine compound of the formula (I) or (II) and a charge transport layer.
Claim 4
Dependent Claim
20 words
The electrophotographic plate of claim 1, wherein the photoconductive layer comprises a charge generation material and a charge transport material.
Claim 5
Dependent Claim
23 words
The electrophotographic plate of claim 1, wherein the photoconductive layer comprises the naphthalocyanine compound of the formula (I) or (II) and a binder.
Claim 6
Dependent Claim
37 words
The electrophotographic plate of claim 2, wherein the charge generation layer contains the naphthalocyanine compound of the formula (I) or (II) and a binder, and the charge transport layer contains the charge transport material and a binder.
Claim 7
Dependent Claim
32 words
The electrophotographic plate of claim 2 or 5, wherein the charge generation layer is from 0.001 to 10 μm thick and the charge transport layer is from 5 to 10 μm thick.
Claim 8
Dependent Claim
30 words
The electrophotographic plate of claim 6, wherein the charge generation layer is from 0.2 to 5 μm thick and the charge transport layer is from 8 to 20 μm thick.
Claim 9
Dependent Claim
32 words
The electrophotographic plate of any of claims 1 to 7, wherein the naphthalocyanine compound is copper naphthalocyanine, zinc naphthalocyanine, oxytitanium naphthalocyanine, vanadyl naphthalocyanine, chloroaluminum naphthalocyanine, chlorogallium naphthalocyanine, chloroindium naphthalocyanine, or metal-free naphthalocyanine.
Claim 10
Dependent Claim
24 words
The electrophotographic plate of claim 8 wherein the naphthalocyanine compound is copper naphthalocyanine, zinc naphthalocyanine, vanadyl naphthalocyananine, chloroindium naphthalocyanine, chloroaluminum naphthalocyanine or metal-free naphthalocyanine.
References Cited (Backward Citations)
US4587188A
Cited
GB2145835A
Cited
US4492750A
Cited
US4664997A
Cited
US4725525A
Cited
US4749637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |