Patent US4072518A successfully refreshed from Google Patents.
US4072518A
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Method of making trigonal selenium interlayers by glow discharge
Assignee: Xerox Corp
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Filing: 1976-12-30
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Granted: 1978-02-07
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Expires: 1996-12-30
Abstract
Abstract A one-step process, method and corresponding xerographic photoreceptor obtained thereby, having all or part of the hole generating layer in the trigonal form, the process being effected and the photoreceptor obtained through the use of a glow discharge and ionizable inert gas.
Inventors
- 👤 Lewis B. Leder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:06
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08207; G03G5/043; G03G5/0433
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
A method for controlling the amount of crystalline photoconductive selenium or selenium alloy material initially applied to a xerographic base or substrate comprising exposing the base or substrate, as a cathode, to a vapor cloud comprising uncharged photoconductive material plus oppositely charged high energy photoconductive material and inert gaseous ions; the vapor cloud being obtained essentially by vaporizing selenium or selenium alloy in a vacuum coater in convenient proximity to a glow discharge in the presence of an inert ion-forming gas and thereafter exposing the base or substrate to an un-ionized vapor cloud at least initially comprising selenium and at least .3% by weight arsenic.
Claim 2
Independent Claim
105 words
A method for controlling the amount of crystalline photoconductive selenium or selenium alloy material initially applied to a xerographic base or substrate comprising exposing the base or substrate, as a cathode, to a vapor cloud comprising uncharged photoconductive material plus oppositely charged high energy photoconductive material and inert gaseous ions; the vapor cloud being obtained essentially by vaporizing selenium or selenium alloy in a vacuum coater in convenient proximity to a glow discharge in the presence of an inert ion-forming gas and thereafter exposing the base or substrate to an un-ionized vapor cloud at least initially comprising selenium and at least .3% by weight arsenic.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein the inert ion-forming gas is one or more of argon, xenon, krypton, neon or nitrogen.
Claim 4
Dependent Claim
36 words
The method of claim 2 wherein exposure to the unionized vapor cloud is maintained under vacuum for a period sufficient to lay down at least about a .1μ layer of a 0.3%-40wt.% selenium/arsenic alloy by weight.
Claim 5
Dependent Claim
18 words
The method of claim 3 wherein an amorphous selenium coat is vacuum coated over the 0.3%-40wt.% selenium/arsenic alloy.
Claim 6
Dependent Claim
34 words
The method of claim 1 wherein (a) one or more crucibles containing selenium or selenium alloy and (b) one or more bases or substrates are utilized, respectively, as electrodes in forming the glow discharge.
Claim 7
Dependent Claim
12 words
The method of claim 3 wherein the inert ion-forming gas is argon.
Claim 8
Dependent Claim
12 words
The method of claim 3 wherein the inert ion-forming gas is xenon.
Claim 9
Dependent Claim
20 words
The method of claim 4 wherein the base is of aluminum, nickel, brass, stainless steel or corresponding metal-coated polymeric material.
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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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |