Patent US5098736A successfully refreshed from Google Patents.
US5098736A
Expired / Lapsed
US
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Method for preparing electrophotographic photoreceptor
Assignee: Fujifilm Business Innovation Corp
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Filing: 1989-01-03
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Granted: 1992-03-24
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Expires: 2009-01-03
Abstract
Abstract A method for preparing an electrophotographic photoreceptor comprising the steps of either forming a charge transporting layer comprising aluminum oxide and then forming a charge generating layer having amorphous silicon as the principal component, or forming a charge generating layer having amorphous silicon as the principal component and then forming a charge transporting layer comprising aluminum oxide. The charge transporting layer is formed by means of an ion assisted deposition method.
Inventors
- 👤 Yuzuru Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:56
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; C; C23; C23C; C23C14/00; C23C14/06; C23C14/08; C23C16/00; C23C16/22; C23C16/24; G03G5/043; G03G5/0433
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
64 words
A method for preparing an electrophotographic photoreceptor comprising the steps of: forming by means of an ion assisted deposition method employing oxygen gas as the ion source, a charge transporting layer comprising aluminum oxide and having a thickness in the range of 2 to 100 microns; and forming on said charge transporting layer a charge generating layer having amorphous silicon as the principal component.
Claim 2
Independent Claim
64 words
A method for preparing an electrophotographic photoreceptor comprising the steps of: forming by means of an ion assisted deposition method employing oxygen gas as the ion source, a charge transporting layer comprising aluminum oxide and having a thickness in the range of 2 to 100 microns; and forming on said charge transporting layer a charge generating layer having amorphous silicon as the principal component.
Claim 3
Dependent Claim
30 words
A method for preparing an electrophotographic photoreceptor as claimed in claim 1, wherein said charge generating layer is formed with a thickness in the range of 0.1 to 30 microns.
Claim 4
Dependent Claim
30 words
A method for preparing an electrophotographic photoreceptor as claimed in claim 1, wherein said charge generating layer is formed with a thickness in the range of 0.5 to 5 microns.
Claim 5
Dependent Claim
30 words
A method for preparing an electrophotographic photoreceptor as claimed in claim 1, wherein said charge transporting layer is formed with a thickness in the range of 3 to 30 microns.
Claim 6
Independent Claim
63 words
A method for preparing an electrophotographic photoreceptor comprising the steps of: forming a charge generating layer having amphorous silicon as the principal components; and forming on said charge generating layer, by means of an ion assisted deposition method employing oxygen as the ion source, a charge transporting layer comprising aluminum oxide and having a thickness in the range of 2 to 100 microns.
Claim 7
Independent Claim
63 words
A method for preparing an electrophotographic photoreceptor comprising the steps of: forming a charge generating layer having amphorous silicon as the principal components; and forming on said charge generating layer, by means of an ion assisted deposition method employing oxygen as the ion source, a charge transporting layer comprising aluminum oxide and having a thickness in the range of 2 to 100 microns.
Claim 8
Dependent Claim
30 words
A method for preparing an electrophotographic photoreceptor as claimed in claim 5, wherein said charge generating layer is formed with a thickness in the range of 0.1 to 30 microns.
Claim 9
Dependent Claim
30 words
A method for preparing an electrophotographic photoreceptor as claimed in claim 5, wherein said charge generating layer is formed with a thickness in the range of 0.5 to 5 microns.
Claim 10
Dependent Claim
30 words
A method for preparing an electrophotographic photoreceptor as claimed in claim 5, wherein said charge transporting layer is formed with a thickness in the range of 3 to 30 microns.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |