US4281050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Migration imaging system
Assignee: Xerox Corp
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Filing: 1970-01-29
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Granted: 1981-07-28
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Expires: 1990-01-29
Abstract
Abstract A migration imaging system including imaging members comprising a substrate overcoated with a softenable layer, and migration marking material, with the softenable layer having a thin surface skin of material having a higher viscosity than the remainder of the softenable material layer.
Inventors
- 👤 David A. Buckley
- 👤 Roger N. Ciccarelli
- 👤 Frank G. Belli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:47
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/10; G03G17/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
96 words
A method of preparing migration imaging members which comprises: providing a supporting substrate, forming upon said substrate a layer of softenable material, exposing the entire surface areas of said softenable layer to hardening radiation sufficiently to form on said surface a surface skin having a thickness not greater than about 0.3 micron and a viscosity during imaging of said member greater than that of the bulk of said softenable layer, and forming contiguous the surface of said softenable layer spaced apart from said substrate and contacting said softenable layer, a fracturable layer of migration marking material.
Claim 2
Independent Claim
96 words
A method of preparing migration imaging members which comprises: providing a supporting substrate, forming upon said substrate a layer of softenable material, exposing the entire surface areas of said softenable layer to hardening radiation sufficiently to form on said surface a surface skin having a thickness not greater than about 0.3 micron and a viscosity during imaging of said member greater than that of the bulk of said softenable layer, and forming contiguous the surface of said softenable layer spaced apart from said substrate and contacting said softenable layer, a fracturable layer of migration marking material.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said hardening radiation is ultraviolet radiation.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein the migration marking material is electrically photosensitive material.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein the softenable layer comprises electrically photosensitive material.
Claim 6
Independent Claim
129 words
A method of preparing migration imaging members which comprise: providing a support substrate, forming upon said substrate a single layer of curable softenable material where the entire upper portion of said softenable layer is a surface skin formed by mixing a chemical composition different from the bulk of the softenable material with the softenable material whereby the chemical composition migrates to the upper portion of said softenable layer as the softenable material cures, said surface skin having a thickness not greater than about 0.3 micron and a viscosity during imaging of said member greater than that of the bulk of said softenable material, and forming contiguous the surface of said softenable layer spaced apart from said substrate and contacting said softenable layer, a fracturable layer of migration marking material.
Claim 7
Independent Claim
129 words
A method of preparing migration imaging members which comprise: providing a support substrate, forming upon said substrate a single layer of curable softenable material where the entire upper portion of said softenable layer is a surface skin formed by mixing a chemical composition different from the bulk of the softenable material with the softenable material whereby the chemical composition migrates to the upper portion of said softenable layer as the softenable material cures, said surface skin having a thickness not greater than about 0.3 micron and a viscosity during imaging of said member greater than that of the bulk of said softenable material, and forming contiguous the surface of said softenable layer spaced apart from said substrate and contacting said softenable layer, a fracturable layer of migration marking material.
Claim 8
Dependent Claim
14 words
The method of claim 5 wherein the migration marking material is electrically photosensitive material.
Claim 9
Dependent Claim
13 words
The method of claim 5 wherein the softenable layer comprises electrically photosensitive material.
Claim 10
Dependent Claim
14 words
The method of claim 5 wherein said surface skin is a phenol formaldehyde resin.
Claim 11
Independent Claim
120 words
A method of preparing a migration imaging member which comprises: providing a supporting substrate, and forming upon said substrate a single layer of curable softenable material where the entire upper portion of said softenable layer is a surface skin formed by mixing a chemical composition different from the bulk of the softenable material with the softenable material whereby the chemical composition migrates to the upper portion of said softenable layer as the softenable material cures, said surface skin having a thickness not greater than about 0.3 micron and a viscosity during imaging of said member greater than that of the bulk of said softenable material, said softenable layer of softenable material having migration marking material dispersed throughout said softenable material.
Claim 12
Independent Claim
120 words
A method of preparing a migration imaging member which comprises: providing a supporting substrate, and forming upon said substrate a single layer of curable softenable material where the entire upper portion of said softenable layer is a surface skin formed by mixing a chemical composition different from the bulk of the softenable material with the softenable material whereby the chemical composition migrates to the upper portion of said softenable layer as the softenable material cures, said surface skin having a thickness not greater than about 0.3 micron and a viscosity during imaging of said member greater than that of the bulk of said softenable material, said softenable layer of softenable material having migration marking material dispersed throughout said softenable material.
Claim 13
Dependent Claim
14 words
The method of claim 9 wherein the migration marking material is electrically photosensitive material.
Claim 14
Dependent Claim
13 words
The method of claim 9 wherein the softenable layer comprises electrically photosensitive material.
Claim 15
Dependent Claim
14 words
The method of claim 9 wherein said surface skin is a phenol formaldehyde resin.
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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) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |