Patent US3004622A successfully refreshed from Google Patents.
Patent US5403627A successfully refreshed from Google Patents.
US5403627A
Expired / Lapsed
US
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Process and apparatus for treating a photoreceptor coating
Assignee: Xerox Corp
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Filing: 1993-06-04
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Granted: 1995-04-04
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Expires: 2013-06-04
Abstract
Abstract A process for treating a predetermined portion of a coating on a photoreceptor to remove at least part of the coating involves directing a source of high energy irradiation at the coating in the presence of at least one fluid medium to remove at least part of the coating from the predetermined portion of the coating. The source of high energy irradiation is preferably a laser beam, ultrasonic energy, or a source of high intensity heat. The at least one fluid medium is preferably at least one gas jet, liquid jet or a liquid solvent.
Inventors
- 👤 John J. Wilbert
- 👤 William G. Herbert
- 👤 Ernest F. Matyi
- 👤 Henry T. Mastalski
- 👤 Eugene A. Swain
- 👤 Peter J. Schmitt
- 👤 Alfred O. Klein
- 👤 Monroe J. Hordon
- 👤 Gary J. Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:11
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/005; B; B05; B05D; B05D5/00; B23; B23K; B23K26/00; B23K26/14; B23K26/142; B23K26/1435; B23K26/1436; B23K26/1437; B23K26/1462
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
78 words
A process for treating a selected portion of a coating on a photoreceptor to remove at least part of the coating, comprising directing a laser beam at the coating in the presence of at least one fluid jet comprising a cross-jet of gas, to remove at least part of the coating from a selected portion of the coating, the at least one fluid jet exerting sufficient force on the coating to assist in the removal of the coating.
Claim 2
Dependent Claim
78 words
A process for treating a selected portion of a coating on a photoreceptor to remove at least part of the coating, comprising directing a laser beam at the coating in the presence of at least one fluid jet comprising a cross-jet of gas, to remove at least part of the coating from a selected portion of the coating, the at least one fluid jet exerting sufficient force on the coating to assist in the removal of the coating.
Claim 3
Dependent Claim
21 words
The process of claim 1, wherein the cross-jet gas has a pressure of from about 20 psi to about 400 psi.
Claim 4
Dependent Claim
30 words
The process of claim 1, wherein the at least one fluid jet further comprises a coaxial fluid jet that travels coaxially with the direction of travel of the laser beam.
Claim 5
Dependent Claim
28 words
The process of claim 3, wherein the coaxial fluid jet is a jet of gas that has a pressure of from about 5 psi to about 150 psi.
Claim 6
Dependent Claim
14 words
The process of claim 1, wherein the fluid jet comprises air or oxygen gas.
Claim 7
Dependent Claim
12 words
The process of claim 1, wherein the fluid jet comprises nitrogen gas.
Claim 8
Dependent Claim
24 words
The process of claim 1, wherein the photoreceptor is rotated about an axis perpendicular to the laser beam during the removal of the coating.
Claim 9
Dependent Claim
48 words
The process of claim 7, wherein the width of the laser beam is less than the width of the selected portion of the coating and the laser beam is translated over the width of the selected portion of the coating to remove at least part of the coating.
Claim 10
Dependent Claim
18 words
The process of claim 1, wherein the laser beam is provided by a continuous wave carbon dioxide laser.
Claim 11
Dependent Claim
27 words
The process of claim 9, wherein the photoreceptor includes an aluminum substrate, and the laser has a power of from about 800 W to about 2000 W.
Claim 12
Dependent Claim
27 words
The process of claim 10, wherein the photoreceptor includes a nickel substrate, and the laser has a power of from about 100 W to about 400 W.
Claim 13
Dependent Claim
32 words
The process of claim 1, wherein the photoreceptor includes a cylindrical substrate, and the laser beam is directed at the coating at an angle tangential to a surface of the cylindrical substrate.
Claim 14
Dependent Claim
13 words
The process of claim 1, wherein the coating comprises an organic photoconductor coating.
Claim 15
Dependent Claim
21 words
The process of claim 1, wherein the selected portion of the coating is located at a peripheral end of the photoreceptor.
Claim 16
Dependent Claim
79 words
A process for removing a selected portion of a coating from a photoreceptor, comprising rotating a photoreceptor about an axis, and directing a laser beam from a continuous wave carbon dioxide laser at a selected portion of a coating on the photoreceptor while concurrently directing a cross-jet of gas having a pressure of from about 20 psi to about 400 psi at the selected portion of the coating to remove the selected portion of the coating from the photoreceptor.
Claim 17
Dependent Claim
79 words
A process for removing a selected portion of a coating from a photoreceptor, comprising rotating a photoreceptor about an axis, and directing a laser beam from a continuous wave carbon dioxide laser at a selected portion of a coating on the photoreceptor while concurrently directing a cross-jet of gas having a pressure of from about 20 psi to about 400 psi at the selected portion of the coating to remove the selected portion of the coating from the photoreceptor.
Claim 18
Dependent Claim
22 words
The process of claim 15, wherein the cross-jet of gas has a pressure of from about 100 psi to about 300 psi.
Claim 19
Dependent Claim
31 words
The process of claim 15, wherein the photoreceptor includes an aluminum substrate, and the continuous wave carbon dioxide laser has a power of from about 800 W to about 2000 W.
Claim 20
Dependent Claim
31 words
The process of claim 15, wherein the photoreceptor includes a nickel substrate, and the continuous wave carbon dioxide laser has a power of from about 100 W to about 400 W.
Claim 21
Dependent Claim
32 words
The process of claim 15, wherein the photoreceptor includes a cylindrical substrate, and the laser beam is directed at the coating at an angle tangential to a surface of the cylindrical substrate.
Claim 22
Dependent Claim
13 words
The process of claim 15, wherein the coating comprises an organic photoconductor coating.
Claim 23
Dependent Claim
21 words
The process of claim 13, wherein the selected portion of the coating is located at a peripheral end of the photoreceptor.
Claim 24
Dependent Claim
24 words
The process of claim 15, wherein the photoreceptor is rotated about an axis perpendicular to the laser beam during the removal of the coating.
References Cited (Backward Citations)
US3749878A
Cited
US4530896A
Cited
US4151312A
Cited
US4685975A
Cited
US4661370A
Cited
US4739591A
Cited
US4716829A
Cited
US4776904A
Cited
US4877644A
Cited
US4898650A
Cited
JPH03144458A
Cited
US5199342A
Cited
US5164567A
Cited
JPH0534934A
Cited
US5187967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-04-03 | 1998-10-03 | 1999-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-03 | 2002-10-03 | 2003-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-03 | 2006-10-03 | 2007-04-04 | $7700.00 | Window Closed / Lapsed |