US5284730A
Expired / Lapsed
US
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Electrophotographic light-receiving member
Assignee: Canon Inc
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Filing: 1992-08-06
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Granted: 1994-02-08
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Expires: 2012-08-06
Abstract
Abstract An electrophotographic light-receiving member has a surface layer of a non-single crystal material (Si x C y O z ) t H u F v (wherein 0.1≦x≦0.4, 0.4≦y≦0.7, 0.05≦z≦0.2, x+y+z=1, 0.299≦t≦0.589, 0.41≦u≦0.7, 0.001≦v≦0.1 and t+u+v=1), in which the ratio of silicon atoms bonded to carbon atoms in the surface layer is at least 50% of the total number of silicon atoms, and the ratio of silicon atoms bonded to oxygen atoms is 10 to 30 atomic % of the total number of silicon atoms.
Inventors
- 👤 Tetsuya Takei
- 👤 Shigeru Shirai
- 👤 Hirokazu Ohtoshi
- 👤 Ryuji Okamura
- 👤 Yasuyoshi Takai
- 👤 Hiroyuki Katagiri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:42
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/30; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08221
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
116 words
An electrophotgraphic light-receiving member comprising a non single crystal layer comprising at least silicon, carbon, oxygen, hydrogen and fluorine atoms as an outermost surface layer, wherein the ratio of silicon atoms bonded to carbon atoms in said non-single crystal layer is 50 to 100 atomic % of the total number of silicon atoms therein, the ratio of silicon atoms bonded to oxygen atoms in said non-single crystal layer is 10 to 30 atomic % of the total number of silicon atoms therein, and said non-single crystal layer is substantially composed of a non-single crystal (Si x C y O z ) t H u F v wherein 0.1≦x≦0.4, 0.4≦y≦0.7, 0.05≦z≦0.2, x+y+z=1, 0.299≦t≦0.589, 0.41≦u≦0.7, 0.001≦v≦0.1 and t+u+v=1.
Claim 2
Dependent Claim
116 words
An electrophotgraphic light-receiving member comprising a non single crystal layer comprising at least silicon, carbon, oxygen, hydrogen and fluorine atoms as an outermost surface layer, wherein the ratio of silicon atoms bonded to carbon atoms in said non-single crystal layer is 50 to 100 atomic % of the total number of silicon atoms therein, the ratio of silicon atoms bonded to oxygen atoms in said non-single crystal layer is 10 to 30 atomic % of the total number of silicon atoms therein, and said non-single crystal layer is substantially composed of a non-single crystal (Si x C y O z ) t H u F v wherein 0.1≦x≦0.4, 0.4≦y≦0.7, 0.05≦z≦0.2, x+y+z=1, 0.299≦t≦0.589, 0.41≦u≦0.7, 0.001≦v≦0.1 and t+u+v=1.
Claim 3
Dependent Claim
21 words
An electrophotographic light-receiving member according to claim 1, wherein the thickness of said non-single crystal layer is 10 to 500 Å.
Claim 4
Dependent Claim
137 words
An electrophotographic light-receiving member, comprising a non-single crystal layer comprising at least silicon, carbon, oxygen, hydrogen and fluorine atoms as an outermost surface, wherein the ratio of silicon atoms bonded to carbon atoms in said non single crystal layer is 50 to 100 atomic % of the total number of silicon atoms therein, the ratio of silicon atoms bonded to oxygen atoms is 10 to 30 atomic % of the total number of silicon atoms therein, the ratio of carbon atoms bonded to oxygen atoms is 10 to 30 atomic % of the total number of carbon atoms therein and said non-single crystal layer is substantially composed of non-single crystal silicon having the formula (Si x C y O z ) t H u F v wherein 0.1≦x≦0.4, 0.4≦y≦0.7, 0.05≦z ≦0.2, 0.299≦t≦0.589, 041≦u≦0.7, 0.001≦v≦0.1, x+y+z=1 and t+u+v=1.
Claim 5
Dependent Claim
137 words
An electrophotographic light-receiving member, comprising a non-single crystal layer comprising at least silicon, carbon, oxygen, hydrogen and fluorine atoms as an outermost surface, wherein the ratio of silicon atoms bonded to carbon atoms in said non single crystal layer is 50 to 100 atomic % of the total number of silicon atoms therein, the ratio of silicon atoms bonded to oxygen atoms is 10 to 30 atomic % of the total number of silicon atoms therein, the ratio of carbon atoms bonded to oxygen atoms is 10 to 30 atomic % of the total number of carbon atoms therein and said non-single crystal layer is substantially composed of non-single crystal silicon having the formula (Si x C y O z ) t H u F v wherein 0.1≦x≦0.4, 0.4≦y≦0.7, 0.05≦z ≦0.2, 0.299≦t≦0.589, 041≦u≦0.7, 0.001≦v≦0.1, x+y+z=1 and t+u+v=1.
Claim 6
Dependent Claim
21 words
An electrophotographic light-receiving member according to claim 3, wherein the thickness of said non-single crystal layer is 10 to 500 Å.
Claim 7
Dependent Claim
44 words
An electrophotographic light-receiving member according to any one of claims 1 or 3, wherein the ratio of silicon atoms bonded to carbon atoms in said outermost surface layer is at least 60% of the total number of silicon atoms in said outermost surface layer.
Claim 8
Dependent Claim
15 words
An electrophotographic light-receiving member according to claim 5, wherein said ratio is at least 70%.
Claim 9
Dependent Claim
43 words
An electrophotographic light-receiving member according to any one of claims 1 or 3, wherein the content of carbon atoms in said surface layer is 40 to 90 atomic % of the total number of silicon and carbon atoms in said outermost surface layer.
References Cited (Backward Citations)
DE2746967A1
Cited
US4225222A
Cited
DE2855718A1
Cited
US4265991A
Cited
JPS5711556A
Cited
US4539283A
Cited
US4483911A
Cited
JPS6067951A
Cited
JPS6216861A
Cited
US4775606A
Cited
US4792509A
Cited
US4824749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-07 | 1997-08-09 | 1998-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-07 | 2001-08-09 | 2002-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-07 | 2005-08-09 | 2006-02-08 | $7700.00 | Window Closed / Lapsed |