US4851313A
Expired / Lapsed
US
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Photosensitive member comprising charge generating layer and charge transporting layer and process for preparing same
Assignee: Minolta Co Ltd
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Filing: 1987-06-03
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Granted: 1989-07-25
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Expires: 2007-06-03
Abstract
Abstract A photosensitive member of the present invention comprises an electrically conductive substrate, a charge generating layer and a charge transporting layer comprising amorphous carbon which contains a chain hydrocarbon and a cyclic hydrocarbon. The charge transporting layer is formed by using a chain hydrocarbon and a cyclic hydrocarbon such that the flow rate ratio of the former to the latter is preferably 19:1-1:19. The photosensitive member of this construction is excellent in electrophotographic characteristics inclusive of charge transportability and charging ability.
Inventors
- 👤 Izumi Osawa
- 👤 Syuji Iino
- 👤 Hideo Hotomi
- 👤 Mitsutoshi Nakamura
- 👤 Isao Doi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:09
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08235; G03G5/043; G03G5/0433; G03G5/08221; G03G5/08278; G03G5/08285
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
123 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising: an amorphous carbon containing hydrogen in an amount of about 0.1 to about 67 atomic % polymer, said amorphous carbon containing hydrogen polymer produced with plasma polymerization by using a chain hydrocarbon and a cyclic hydrocarbon as a starting material, the ratio of said chain hydrocarbon to said cyclic hydrocarbon being from about 19:1 to about 1:19, said amorphous carbon containing hydrogen polymer having an optical energy band gap of from about 1.5 to about 3.0 eV and a specific dielectric constant of from about 2.0 to about 6.0, and said charge transporting layer having a thickness of from about 5 to about 50 microns.
Claim 2
Dependent Claim
123 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising: an amorphous carbon containing hydrogen in an amount of about 0.1 to about 67 atomic % polymer, said amorphous carbon containing hydrogen polymer produced with plasma polymerization by using a chain hydrocarbon and a cyclic hydrocarbon as a starting material, the ratio of said chain hydrocarbon to said cyclic hydrocarbon being from about 19:1 to about 1:19, said amorphous carbon containing hydrogen polymer having an optical energy band gap of from about 1.5 to about 3.0 eV and a specific dielectric constant of from about 2.0 to about 6.0, and said charge transporting layer having a thickness of from about 5 to about 50 microns.
Claim 3
Dependent Claim
143 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising: an amorphous carbon containing hydrogen in an amout of about 0.1 to about 67 atomic % polymer, said amorphous carbon containing hydrogen polymer produced with plasma polymerization by using as a starting material a chain hydrocarbon selected from the group consisting of ethylene, butadiene and propylene and a cyclic hydrocarbon selected from the group consisting of styrene, benzene and cyclohexane, the ratio of said chain hydrocarbon to said cyclic hydrocarbon being from about 19:1 to about 1:19, said amorphous carbon containing hydrogen polymer having an optical energy band gap of from about 1.5 to about 3.0 eV and a specific dielectric constant of from about 2.0 to about 6.0, and said charge transporting layer having a thickness of from about 5 to about 50 microns.
Claim 4
Dependent Claim
143 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising: an amorphous carbon containing hydrogen in an amout of about 0.1 to about 67 atomic % polymer, said amorphous carbon containing hydrogen polymer produced with plasma polymerization by using as a starting material a chain hydrocarbon selected from the group consisting of ethylene, butadiene and propylene and a cyclic hydrocarbon selected from the group consisting of styrene, benzene and cyclohexane, the ratio of said chain hydrocarbon to said cyclic hydrocarbon being from about 19:1 to about 1:19, said amorphous carbon containing hydrogen polymer having an optical energy band gap of from about 1.5 to about 3.0 eV and a specific dielectric constant of from about 2.0 to about 6.0, and said charge transporting layer having a thickness of from about 5 to about 50 microns.
Claim 5
Dependent Claim
176 words
A process for preparing a photosensitive member which comprises an electrically conductive substrate, a charge generating layer and a charge transporting layer comprising an amorphous carbon containing hydrogen in an amount of about 0.1 to about 67 atomic % polymer said process comprising: the first step of introducing gaseous materials into a reaction chamber, said materials including a chain hydrocarbon and a cyclic hydrocarbon, the flow rate ratio of said chain hydrocarbon to said cyclic hydrocarbon being from about 19:1 to about 1:19; the second step of heating the substrate to a predetermined temperature; and the third step of causing plasma discharge in said reactor chamber in which said gaseous materials introduced are heated by the second step while applying an electric power from a power source to form said charge transporting layer on the substrate, said charge transporting layer having an optical energy band gap of from about 1.5 to about 3.0 eV, a specific dielectric constant of from about 2.0 to about 6.0, and a thickness of from about 5 to about 50 microns.
Claim 6
Dependent Claim
176 words
A process for preparing a photosensitive member which comprises an electrically conductive substrate, a charge generating layer and a charge transporting layer comprising an amorphous carbon containing hydrogen in an amount of about 0.1 to about 67 atomic % polymer said process comprising: the first step of introducing gaseous materials into a reaction chamber, said materials including a chain hydrocarbon and a cyclic hydrocarbon, the flow rate ratio of said chain hydrocarbon to said cyclic hydrocarbon being from about 19:1 to about 1:19; the second step of heating the substrate to a predetermined temperature; and the third step of causing plasma discharge in said reactor chamber in which said gaseous materials introduced are heated by the second step while applying an electric power from a power source to form said charge transporting layer on the substrate, said charge transporting layer having an optical energy band gap of from about 1.5 to about 3.0 eV, a specific dielectric constant of from about 2.0 to about 6.0, and a thickness of from about 5 to about 50 microns.
Claim 7
Dependent Claim
27 words
A process as claimed in claim 3 wherein the flow rate ratio of said chain hydrocarbon to said cyclic hydrocarbon is preferably about 9:1 to about 1:1.
Claim 8
Dependent Claim
196 words
A process for preparing a photosensitive member which comprises an electrically conductive substrate, a charge generating layer and a charge transporting layer comprising an amorphous carbon containing hydrogen in an amount of about 0.1 to about 67 atomic % polymer, said process comprising: the first step of producing a vacuum in a reactor chamber; the second step of heating the substrate to a temperature of about 20° C. to about 300° C.; the third step of introducing gaseous materials into said evacuated reactor chamber, said materials comprising a chain hydrocarbon and a cyclic hydrocarbon, the flow rate ratio of said chain hydrocarbon to said cyclic hydrocarbon being from about 19:1 to about 1:19; the fourth step of causing plasma discharge in said reactor chamber in which said gaseous materials are introduced while applying an electric power of about 20 to about 500 watts from a power source to form said charge transporting layer on the substrate, said charge transporting layer having an optical energy band gap of from about 1.5 to about 3.0 eV, a specific dielectric constant of from about 2.0 to about 6.0, and a thickness of from about 5 to about 50 microns.
Claim 9
Dependent Claim
196 words
A process for preparing a photosensitive member which comprises an electrically conductive substrate, a charge generating layer and a charge transporting layer comprising an amorphous carbon containing hydrogen in an amount of about 0.1 to about 67 atomic % polymer, said process comprising: the first step of producing a vacuum in a reactor chamber; the second step of heating the substrate to a temperature of about 20° C. to about 300° C.; the third step of introducing gaseous materials into said evacuated reactor chamber, said materials comprising a chain hydrocarbon and a cyclic hydrocarbon, the flow rate ratio of said chain hydrocarbon to said cyclic hydrocarbon being from about 19:1 to about 1:19; the fourth step of causing plasma discharge in said reactor chamber in which said gaseous materials are introduced while applying an electric power of about 20 to about 500 watts from a power source to form said charge transporting layer on the substrate, said charge transporting layer having an optical energy band gap of from about 1.5 to about 3.0 eV, a specific dielectric constant of from about 2.0 to about 6.0, and a thickness of from about 5 to about 50 microns.
Claim 10
Dependent Claim
22 words
A process as claimed in claim 5 wherein said chain hydrocarbon is selected from the group consisting of ethylene, butadiene and propylene.
Claim 11
Dependent Claim
22 words
A process as claimed in claim 6 wherein said cyclic hydrocarbon is selected from the group consisting of styrene, benzene and cyclohexane.
Claim 12
Dependent Claim
12 words
A photosensitive member produced by a process as defined by claim 3.
Claim 13
Dependent Claim
12 words
A photosensitive member produced by a process as defined by claim 5.
Claim 14
Dependent Claim
23 words
A photosensitive member as claimed in claim 9, wherein said chain hydrocarbon is selected from the group consisting of ethylene, butadiene and propylene.
Claim 15
Dependent Claim
23 words
A photosensitive member as claimed in claim 9, wherein said cyclic hydrocarbon is selected from the group consisting of styrene, benzene and cyclohexane.
Claim 16
Dependent Claim
27 words
A photosensitive member as claimed in claim 1, wherein said ratio of said chain hydrocarbon to said cyclic hydrocarbon is preferably from about 9:1 to about 1:9.
Claim 17
Dependent Claim
27 words
A photosensitive member as claimed in claim 2, wherein said ratio of said chain hydrocarbon to said cyclic hydrocarbon is preferably from about 9:1 to about 1:9.
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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) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |