US4741982A
Expired / Lapsed
US
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Photosensitive member having undercoat layer of amorphous carbon
Assignee: Minolta Co Ltd
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Filing: 1986-09-10
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Granted: 1988-05-03
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Expires: 2006-09-10
Abstract
Abstract The present invention provides a new photosensitive member which comprises a hydrogen-containing carbon undercoat layer controlled in the polarity by an element of IIIA or VA group, a hydrogen-containing C:H charge transporting layer and a charge generating layer, which has an excellent charge transortability, a charging ability, and preventing properties of charge injection and of increase of residual potential.
Inventors
- 👤 Shuji Iino
- 👤 Hideo Hotomi
- 👤 Izumi Osawa
- 👤 Mitsutoshi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:49
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: 20
Claim 1
Independent Claim
86 words
A photosensitive member comprising: an electrically conductive substrate; an undercoat layer formed on said substrate and comprising amorphous carbon containing hydrogen, said undercoat layer comprises an impurity element in Group IIIA or VA of the Periodic Table, said undercoat layer having a thickness of about 0.01 to 5 μm; a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on an amount of all atoms contained therein; and a charge generating layer.
Claim 2
Dependent Claim
86 words
A photosensitive member comprising: an electrically conductive substrate; an undercoat layer formed on said substrate and comprising amorphous carbon containing hydrogen, said undercoat layer comprises an impurity element in Group IIIA or VA of the Periodic Table, said undercoat layer having a thickness of about 0.01 to 5 μm; a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on an amount of all atoms contained therein; and a charge generating layer.
Claim 3
Dependent Claim
117 words
A photosensitive member comprising: an electrically conductive substrate; an undercoat layer formed on said substrate and comprising amorphous carbon containing hydrogen, said undercoat layer comprising less than about 20000 ppm of an impurity element in Group IIIA or Group VA of the Periodic Table, said undercoat layer having a thickness of about 0.01 to 5 μm and said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based in the amount of all atoms contained therein; a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on an amount of all atoms contained therein; and a charge generating layer.
Claim 4
Dependent Claim
117 words
A photosensitive member comprising: an electrically conductive substrate; an undercoat layer formed on said substrate and comprising amorphous carbon containing hydrogen, said undercoat layer comprising less than about 20000 ppm of an impurity element in Group IIIA or Group VA of the Periodic Table, said undercoat layer having a thickness of about 0.01 to 5 μm and said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based in the amount of all atoms contained therein; a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on an amount of all atoms contained therein; and a charge generating layer.
Claim 5
Dependent Claim
29 words
A photosensitive member of claim 2 wherein the impurity element in Group IIIA of the Periodic Table is preferably contained in an amount of about 3 to 1000 ppm.
Claim 6
Dependent Claim
20 words
A photosensitive member of claim 3 wherein the impurity element in Group IIIA of the Periodic Table is preferably boron.
Claim 7
Dependent Claim
29 words
A photosensitive member of claim 2 wherein the impurity element in Group VA of the Periodic Table is preferably contained in an amount of about 1 to 1000 ppm.
Claim 8
Dependent Claim
20 words
A photosensitive member of claim 5 wherein the impurity element in Group VA of the Periodic Table is preferably phosphorus.
Claim 9
Dependent Claim
33 words
A photosensitive member of claim 2 wherein the amount of the hydrogen contained in said undercoat layer is about 0.1 to 67 atomic percent based on the amount of all atoms contained therein.
Claim 10
Dependent Claim
151 words
A photosensitive member comprising: an electrically conductive substrate; an undercoat layer formed on said substrate and comprising amorphous carbon containing hydrogen, said undercoat layer comprising less than about 20000 ppm of an impurity element in Group IIIA or Group VA of the Periodic Table, said undercoat layer having a thickness of about 0.01 to 5 μm and said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on the amount of all atoms contained therein; a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on an amount of all atoms contained therein; said charge transporting layer containing an impurity element in Group IIIA or VA of the Periodic Table to adjust its polarity, the content of said element being less than that in said undercoat layer; and a charge generating layer.
Claim 11
Dependent Claim
151 words
A photosensitive member comprising: an electrically conductive substrate; an undercoat layer formed on said substrate and comprising amorphous carbon containing hydrogen, said undercoat layer comprising less than about 20000 ppm of an impurity element in Group IIIA or Group VA of the Periodic Table, said undercoat layer having a thickness of about 0.01 to 5 μm and said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on the amount of all atoms contained therein; a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on an amount of all atoms contained therein; said charge transporting layer containing an impurity element in Group IIIA or VA of the Periodic Table to adjust its polarity, the content of said element being less than that in said undercoat layer; and a charge generating layer.
Claim 12
Dependent Claim
21 words
A photosensitive member of claim 2, wherein said charge transporting layer has a relative dielectric constant of about 2.0 to 6.0.
Claim 13
Dependent Claim
130 words
A photosensitive member comprising: an electrically conductive substrate; an undercoat layer formed on said substrate and comprising amorphous carbon containing hydrogen, said undercoat layer comprising less than about 20000 ppm of an impurity element in Group IIIA or Group VA of the Periodic Table, said undercoat layer having a thickness of about 0.01 to 5 μm and said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on the amount of all atoms contained therein; a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on an amount of all atoms contained therein, said charge transporting layer having a relative dielectric constant of 2.0 to 6.0; and a charge generating layer.
Claim 14
Dependent Claim
130 words
A photosensitive member comprising: an electrically conductive substrate; an undercoat layer formed on said substrate and comprising amorphous carbon containing hydrogen, said undercoat layer comprising less than about 20000 ppm of an impurity element in Group IIIA or Group VA of the Periodic Table, said undercoat layer having a thickness of about 0.01 to 5 μm and said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on the amount of all atoms contained therein; a charge transporting layer comprising amorphous carbon containing hydrogen, said hydrogen being contained in an amount of about 0.1 to 67 atomic percent based on an amount of all atoms contained therein, said charge transporting layer having a relative dielectric constant of 2.0 to 6.0; and a charge generating layer.
Claim 15
Dependent Claim
57 words
A photosensitive member of claim 10, wherein said undercoat layer contains the impurity element in Group IIIA of the Periodic Table so that the layer in the vicinity of the substrate is controlled to be P-type while the layer in the vicinity of the surface of the photosensitive member is controlled to be N-type for positive charging.
Claim 16
Dependent Claim
28 words
A photosensitive member of claim 12, wherein the impurity element in Group IIIA of the Periodic Table is contained in an amount of about 3 to 1000 ppm.
Claim 17
Dependent Claim
19 words
A photosensitive member of claim 12, wherein the impurity element in Group IIIA of the Periodic Table is boron.
Claim 18
Dependent Claim
57 words
A photosensitive member of claim 10, wherein said undercoat layer contains the impurity element in Group VA of the Periodic Table so that the layer in the vicinity of the substrate is controlled to be N-type while the layer in the vicinity of the surface of the photosensitive member is controlled to be P-type for negative charging.
Claim 19
Dependent Claim
29 words
A photosensitive member of claim 14, wherein the impurity element in Group VA of the Periodic Table is preferably contained in an amount of about 1 to 1000 ppm.
Claim 20
Dependent Claim
20 words
A photosensitive member of claim 15, wherein the impurity element in Group VA of the Periodic Table is preferably phosphorus.
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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) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |