Patent US4749636A successfully refreshed from Google Patents.
US4749636A
Expired / Lapsed
US
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Photosensitive member with hydrogen-containing carbon layer
Assignee: Minolta Co Ltd
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Filing: 1986-09-10
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Granted: 1988-06-07
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Expires: 2006-09-10
Abstract
Abstract The present invention provides a photosensitive member comprising a carrier transporting layer of hydrogen-containing carbon, which is excellent in a charge transportability, a chargeability, a rigidity and resistances to corona, acid, moisture and heat, and has so small residual potential.
Inventors
- 👤 Shuji Iino
- 👤 Hideo Hotomi
- 👤 Izumi Osawa
- 👤 Mitsutoshi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:09
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08221; G03G5/08228; G03G5/08285
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
65 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising hydrogen-containing carbon, said hydrogen being contained in an amount of about 40 to 67 atomic % based on the amount of carbon, and said charge transporting layer having an optical energy gap of about 1.5 to 3.0 eV and relative dielectric constant of about 2.0 to 6.0.
Claim 2
Dependent Claim
65 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising hydrogen-containing carbon, said hydrogen being contained in an amount of about 40 to 67 atomic % based on the amount of carbon, and said charge transporting layer having an optical energy gap of about 1.5 to 3.0 eV and relative dielectric constant of about 2.0 to 6.0.
Claim 3
Dependent Claim
57 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic % based on the amount of carbon, and said charge transporting layer having a relative dielectric constant of about 2.0 to 6.0.
Claim 4
Dependent Claim
57 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic % based on the amount of carbon, and said charge transporting layer having a relative dielectric constant of about 2.0 to 6.0.
Claim 5
Dependent Claim
24 words
A photosensitive member of claim 2, in which the charge transporting layer has an optical energy gap of about 1.5 to about 3.0 eV.
Claim 6
Dependent Claim
21 words
A photosensitive member of claim 2, in which the charge transporting layer has a thickness of about 5 to 50 μm.
Claim 7
Dependent Claim
24 words
A photosensitive member of claim 2, in which the hydrogen content is preferably about 30 to about 60 atomic percent based on the carbon.
Claim 8
Dependent Claim
18 words
A photosensitive member of claim 2, in which the charge transporting layer is formed by organic plasma polymerization.
Claim 9
Dependent Claim
68 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic % based on the amount of carbon, and said charge transporting layer having an optical energy gap of about 1.5 to 3.0 eV, and a relative dielectric constant of about 2.0 to 6.0.
Claim 10
Dependent Claim
68 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic % based on the amount of carbon, and said charge transporting layer having an optical energy gap of about 1.5 to 3.0 eV, and a relative dielectric constant of about 2.0 to 6.0.
Claim 11
Dependent Claim
21 words
A photosensitive member of claim 7, in which the charge transporting layer has a thickness of about 5 to 50 μm.
Claim 12
Dependent Claim
24 words
A photosensitive member of claim 7, in which the hydrogen content is preferably about 30 to about 60 atomic percent based on the carbon.
Claim 13
Dependent Claim
18 words
A photosensitive member of claim 7, in which the charge transporting layer is formed by organic plasma polymerization.
Claim 14
Dependent Claim
71 words
A process for producing a photosensitive member by organic plasma polymerization, said process including: introducing gaseous material comprising at least amorphous carbon containing hydrogen into a reactor chamber; heating a substrate; and causing plasma discharge into said reactor chamber after said introduction of gaseous material to form on the heated substrate a charge transporting layer of amorphous carbon comprising hydrogen by applying an electric power of about 0.05 to 1 kV.
Claim 15
Dependent Claim
71 words
A process for producing a photosensitive member by organic plasma polymerization, said process including: introducing gaseous material comprising at least amorphous carbon containing hydrogen into a reactor chamber; heating a substrate; and causing plasma discharge into said reactor chamber after said introduction of gaseous material to form on the heated substrate a charge transporting layer of amorphous carbon comprising hydrogen by applying an electric power of about 0.05 to 1 kV.
Claim 16
Dependent Claim
64 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising at least amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic % based on the amount of carbon, and said charge transporting layer having a relative dielectric constant of about 2.0 to 6.0 and having essentially no photosensitivity.
Claim 17
Dependent Claim
64 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer comprising at least amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic % based on the amount of carbon, and said charge transporting layer having a relative dielectric constant of about 2.0 to 6.0 and having essentially no photosensitivity.
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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) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |