Patent US4738914A successfully refreshed from Google Patents.
US4738914A
Expired / Lapsed
US
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Photosensitive member having an amorphous silicon layer
Assignee: Emtec Magnetics GmbH
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Filing: 1986-07-16
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Granted: 1988-04-19
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Expires: 2006-07-16
Abstract
Abstract The invention disclosed relates to a photosensitive member with an amorphous silicon photoconductive layer. On the photoconductive layer, an insulating layer including amorphous silicon, carbon and oxygen is formed. The amount of carbon is 5 to 65 atomic % and less than 10 atomic % for oxygen if both carbon and oxygen are included uniformly throughout the layer. An amorphous silicon barrier layer containing either oxygen and boron or oxygen and carbon may be formed between the substrate and the photoconductive layer.
Inventors
- 👤 Hiroshi Mizuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:59
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08235; G03G5/08221; H; H10; H10F; H10F30/00; H10F30/10; H10F30/15
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
133 words
A photosensitive member which comprises an electrically-conductive substrate; a barrier layer on said substrate, said barrier layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, about 5 to 60 atomic % of carbon, less than about 10 atomic % of oxygen and between about 100 to about 200 ppm of boron; a photoconductive layer on said barrier layer, said photoconductive layer having a thickness of about 5 to 100 microns and including amorphous silicon; and an insulating layer on said photoconductive layer, said insulating layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, about 5 to 65 atomic % of carbon and less than about 10 atomic % of oxygen, both said carbon and said oxygen being uniformly distributed within said insulating layer.
Claim 2
Dependent Claim
133 words
A photosensitive member which comprises an electrically-conductive substrate; a barrier layer on said substrate, said barrier layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, about 5 to 60 atomic % of carbon, less than about 10 atomic % of oxygen and between about 100 to about 200 ppm of boron; a photoconductive layer on said barrier layer, said photoconductive layer having a thickness of about 5 to 100 microns and including amorphous silicon; and an insulating layer on said photoconductive layer, said insulating layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, about 5 to 65 atomic % of carbon and less than about 10 atomic % of oxygen, both said carbon and said oxygen being uniformly distributed within said insulating layer.
Claim 3
Dependent Claim
23 words
A photosensitive member as claimed in claim 1 wherein the amount of carbon in said insulating layer is 40 to 65 atomic %.
Claim 4
Dependent Claim
141 words
A photosensitive member which comprises an electrically-conductive substrate; a barrier layer on said substrate, said barrier layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, about 5 to 60 atomic % of carbon, less than about 10 atomic % of oxygen and between about 100 to about 200 ppm of boron; a photoconductive layer on said barrier layer, said photoconductive layer having a thickness of about 5 to 100 microns and including amorphous silicon; and an insulating layer on said photoconductive layer, said insulating layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, about 0.01 to 25 atomic % of oxygen and about 1 to 65 10 atomic % of carbon, the amount of said oxygen in said insulating layer gradually increasing in its thickness direction away from said photoconductive layer.
Claim 5
Dependent Claim
141 words
A photosensitive member which comprises an electrically-conductive substrate; a barrier layer on said substrate, said barrier layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, about 5 to 60 atomic % of carbon, less than about 10 atomic % of oxygen and between about 100 to about 200 ppm of boron; a photoconductive layer on said barrier layer, said photoconductive layer having a thickness of about 5 to 100 microns and including amorphous silicon; and an insulating layer on said photoconductive layer, said insulating layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, about 0.01 to 25 atomic % of oxygen and about 1 to 65 10 atomic % of carbon, the amount of said oxygen in said insulating layer gradually increasing in its thickness direction away from said photoconductive layer.
Claim 6
Dependent Claim
95 words
A photosensitive member which comprises, in sequential order, an electrically-conductive substrate; a barrier layer having a thickness of about 0.003 to 2 microns and including at least amorphous silicon, less than about 10 atomic % of oxygen and between about 100 to about 200 ppm of boron; a photoconductive layer having a thickness of about 5 to 100 microns and including amorphous silicon; and an insulating layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, less than 65 atomic % of carbon and less than 10 atomic % of oxygen.
Claim 7
Dependent Claim
95 words
A photosensitive member which comprises, in sequential order, an electrically-conductive substrate; a barrier layer having a thickness of about 0.003 to 2 microns and including at least amorphous silicon, less than about 10 atomic % of oxygen and between about 100 to about 200 ppm of boron; a photoconductive layer having a thickness of about 5 to 100 microns and including amorphous silicon; and an insulating layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, less than 65 atomic % of carbon and less than 10 atomic % of oxygen.
Claim 8
Dependent Claim
22 words
A photosensitive member as claimed in claim 4 wherein said barrier layer further includes about 5 to 60 atomic % of carbon.
Claim 9
Dependent Claim
76 words
A photosensitive member which comprises an electrically-conductive substrate; a photoconductive layer having a thickness of about 5 to 100 microns and including amorphous silicon; and a barrier layer between said substrate and photoconductive layer, said barrier layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, about 5 to 60 atomic % of carbon, less than about 10 atomic % of oxygen and between about 100 to about 200 ppm of boron.
Claim 10
Dependent Claim
76 words
A photosensitive member which comprises an electrically-conductive substrate; a photoconductive layer having a thickness of about 5 to 100 microns and including amorphous silicon; and a barrier layer between said substrate and photoconductive layer, said barrier layer having a thickness of about 0.003 to 2 microns and including amorphous silicon, about 5 to 60 atomic % of carbon, less than about 10 atomic % of oxygen and between about 100 to about 200 ppm of boron.
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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) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |