US5262262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic photoreceptor having conductive layer and amorphous carbon overlayer
Assignee: Fujifilm Business Innovation Corp
•
Filing: 1991-09-30
•
Granted: 1993-11-16
•
Expires: 2011-09-30
Abstract
Abstract An electrophotographic photoreceptor having excellent dark resistance is disclosed, which comprises a photoconductive layer and a surface layer formed successively on a conductive substrate, wherein the photoconductive layer mainly comprises hydrogen-containing amorphous silicon, and the surface layer comprises amorphous carbon which contains not more than 50 atomic percent of hydrogen.
Inventors
- 👤 Shigeru Yagi
- 👤 Masayuki Nishikawa
- 👤 Te Nam Roh
- 👤 Ken-ichi Karakida
- 👤 Masahito Tokuhiro
- 👤 Yuzuru Fukuda
- 👤 Noriyoshi Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:14
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08221; G03G5/08285
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
40 words
An electrophotographic photoreceptor comprising: a support; a photoconductive layer formed on said support; and an amorphous carbon surface layer formed on said photosensitive layer, said amorphous carbon surface layer containing boron and from 5 to 50 atomic percent of hydrogen.
Claim 2
Dependent Claim
40 words
An electrophotographic photoreceptor comprising: a support; a photoconductive layer formed on said support; and an amorphous carbon surface layer formed on said photosensitive layer, said amorphous carbon surface layer containing boron and from 5 to 50 atomic percent of hydrogen.
Claim 3
Dependent Claim
22 words
The electrophotographic photoreceptor as in claim 1, wherein said amorphous carbon surface layer contains from 5 to 40 atomic percent of hydrogen.
Claim 4
Dependent Claim
23 words
The electrophotographic photoreceptor as in claim 1, wherein said amorphous carbon surface layer contains from 1×10 -4 to 1.0 atomic percent of boron.
Claim 5
Dependent Claim
23 words
The electrophotographic photoreceptor as in claim 3, wherein said amorphous carbon surface layer contains from 5×10 -3 to 0.5 atomic percent of boron.
Claim 6
Dependent Claim
29 words
The electrophotographic photoreceptor as in claim 1, wherein said amorphous carbon surface layer is formed by decomposition of a mixed gas comprising a diborane gas and a hydrocarbon compound.
Claim 7
Dependent Claim
22 words
The electrophotographic photoreceptor as in claim 1, wherein said amorphous carbon surface layer has a thickness of from 0.1 to 10 μm.
Claim 8
Dependent Claim
22 words
The electrophotographic photoreceptor as in claim 6, wherein said amorphous carbon surface layer has a thickness of from 0.2 to 5 μm.
Claim 9
Dependent Claim
27 words
The electrophotographic photoreceptor as in claim 1, wherein said photoconductive layer is an amorphous silicon photoconductive layer which contains from 5 to 30 atomic percent of hydrogen.
Claim 10
Dependent Claim
22 words
The electrophotographic photoreceptor as in claim 8, wherein said amorphous silicon photoconductive layer contains from 10 to 30 atomic percent of germanium.
Claim 11
Dependent Claim
40 words
An electrophotographic photoreceptor comprising: a support; a photoconductive layer formed on said support; and an amorphous carbon surface layer formed on said photosensitive layer, said amorphous carbon surface layer containing phosphorus and from 5 to 50 atomic percent of hydrogen.
Claim 12
Dependent Claim
40 words
An electrophotographic photoreceptor comprising: a support; a photoconductive layer formed on said support; and an amorphous carbon surface layer formed on said photosensitive layer, said amorphous carbon surface layer containing phosphorus and from 5 to 50 atomic percent of hydrogen.
Claim 13
Dependent Claim
22 words
The electrophotographic photoreceptor as in claim 10, wherein said amorphous carbon surface layer contains from 5 to 40 atomic percent of hydrogen.
Claim 14
Dependent Claim
23 words
The electrophotographic photoreceptor as in claim 10, wherein said amorphous carbon surface layer contains from 1×10 -4 to 1.0 atomic percent of phosphorus.
Claim 15
Dependent Claim
23 words
The electrophotographic photoreceptor as in claim 12, wherein said amorphous carbon surface layer contains from 1×10 -3 to 0.1 atomic percent of phosphorus.
Claim 16
Dependent Claim
28 words
The electrophotographic photoreceptor as in claim 10, wherein said amorphous carbon surface layer is formed by decomposition of a mixed gas comprising phosphine gas and a hydrocarbon compound.
Claim 17
Dependent Claim
21 words
The electrophotographic photoreceptor as in claim 10, wherein said amorphous carbon surface layer has a thickness of from 0.1 to 10μm.
Claim 18
Dependent Claim
22 words
The electrophotographic photoreceptor as in claim 15, wherein said amorphous carbon surface layer has a thickness of from 0.2 to 5 μm.
Claim 19
Dependent Claim
27 words
The electrophotographic photoreceptor as in claim 10, wherein said photoconductive layer is an amorphous silicon photoconductive layer which contains from 5 to 30 atomic percent of hydrogen.
Claim 20
Dependent Claim
22 words
The electrophotographic photoreceptor as in claim 17, wherein said amorphous silicon photoconductive layer contains from 10 to 30 atomic percent of germanium.
References Cited (Backward Citations)
US4741482A
Cited
JPS57114146A
Cited
US4559289A
Cited
JPS6061761A
Cited
US4544617A
Cited
JPS60225163A
Cited
US4932859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-15 | 1997-05-17 | 1997-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-15 | 2001-05-17 | 2001-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-15 | 2005-05-17 | 2005-11-16 | $7700.00 | Window Closed / Lapsed |