Patent US4007042A successfully refreshed from Google Patents.
US4007042A
Expired / Lapsed
US
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Migration imaging method
Assignee: Xerox Corp
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Filing: 1975-04-03
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Granted: 1977-02-08
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Expires: 1995-04-03
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
2026-10-29 20:04
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/08; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
177 words
An imaging method comprising: providing an imaging member comprising a supporting substrate, a layer of softenable material containing migration marking material overlying said substrate, said softenable material capable of having its resistance to migration of migration marking material decreased sufficiently to allow migration of migration marking material in depth in said softenable material toward said substrate, a surface skin located at the entire free surface area of said softenable layer formed by exposing said free surface to hardening radiation sufficiently to form said surface skin having a thickness in the range of not greater than about 0.3 micron and having a viscosity during imaging of said member greater than the viscosity of the softenable material of said softenable layer; applying an electrical imagewise migration force to the migration marking material; developing said member by decreasing the resistance to migration of migration marking material in depth in the softenable material at least sufficient to allow migration of migration material whereby migration marking material migrates at least in depth in said softenable material toward the substrate in imagewise configuration.
Claim 2
Dependent Claim
177 words
An imaging method comprising: providing an imaging member comprising a supporting substrate, a layer of softenable material containing migration marking material overlying said substrate, said softenable material capable of having its resistance to migration of migration marking material decreased sufficiently to allow migration of migration marking material in depth in said softenable material toward said substrate, a surface skin located at the entire free surface area of said softenable layer formed by exposing said free surface to hardening radiation sufficiently to form said surface skin having a thickness in the range of not greater than about 0.3 micron and having a viscosity during imaging of said member greater than the viscosity of the softenable material of said softenable layer; applying an electrical imagewise migration force to the migration marking material; developing said member by decreasing the resistance to migration of migration marking material in depth in the softenable material at least sufficient to allow migration of migration material whereby migration marking material migrates at least in depth in said softenable material toward the substrate in imagewise configuration.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein the imagewise migration force is provided by providing an electrical latent image on the imaging member.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein said hardening radiation is ultraviolet radiation.
Claim 5
Dependent Claim
16 words
The method of claim 1 wherein said softenable layer is softened by heating the imaging member.
Claim 6
Dependent Claim
27 words
The method of claim 1 wherein said softenable layer is softened by exposing the imaging member to vapors comprising vapors of a solvent for said softenable material.
Claim 7
Dependent Claim
22 words
The method of claim 1 wherein the softenable layer is softened by the application of a liquid solvent for the softenable material.
Claim 8
Dependent Claim
41 words
The method of claim 1 wherein the softenable layer is softened and non-image forming portions of the migration marking material and residual portions of the softenable material are washed away by the application of a liquid solvent for said softenable layer.
Claim 9
Dependent Claim
17 words
The method of claim 1 wherein said softenable material is a mixture of polystyrene and acrylic polymers.
Claim 10
Dependent Claim
171 words
An imaging method comprising: providing an imaging member comprising a supporting substrate a single layer of softenable material containing migration marking material overlying said substrate, said softenable material containing as the entire upper portion thereof a surface skin having a chemical composition different from the bulk of the softenable material and 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 of softenable material, said softenable material capable of having its resistance to migration of migration marking material dispersed sufficiently to allow migration of migration marking material in depth in said softenable material toward said substrate; applying an electrical imagewise migration force to the migration marking material, developing said member by decreasing the resistance of migration of migration marking material in depth in the softenable material at least sufficient to allow migration of migration material whereby migration marking material migrates at least in depth in said softenable material toward the substrate in imagewise configuration.
Claim 11
Dependent Claim
171 words
An imaging method comprising: providing an imaging member comprising a supporting substrate a single layer of softenable material containing migration marking material overlying said substrate, said softenable material containing as the entire upper portion thereof a surface skin having a chemical composition different from the bulk of the softenable material and 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 of softenable material, said softenable material capable of having its resistance to migration of migration marking material dispersed sufficiently to allow migration of migration marking material in depth in said softenable material toward said substrate; applying an electrical imagewise migration force to the migration marking material, developing said member by decreasing the resistance of migration of migration marking material in depth in the softenable material at least sufficient to allow migration of migration material whereby migration marking material migrates at least in depth in said softenable material toward the substrate in imagewise configuration.
Claim 12
Dependent Claim
22 words
The method of claim 9 wherein the imagewise migration force is provided by providing an electrical latent image on the imaging member.
Claim 13
Dependent Claim
16 words
The method of claim 9 wherein said softenable layer is softened by heating the imaging member.
Claim 14
Dependent Claim
27 words
The method of claim 9 wherein said softenable layer is softened by exposing the imaging member to vapors comprising vapors of a solvent for said softenable material.
Claim 15
Dependent Claim
22 words
The method of claim 9 wherein the softenable layer is softened by the application of a liquid solvent for the softenable material.
Claim 16
Dependent Claim
41 words
The method of claim 9 wherein the softenable layer is softened and non-image forming portions of the migration marking material and residual portions of the softenable material are washed away by the application of a liquid solvent for said softenable layer.
Claim 17
Dependent Claim
14 words
The method of claim 9 wherein said surface skin is a phenol formaldehyde resin.
Claim 18
Dependent Claim
17 words
The method of claim 15 wherein said softenable material is a mixture of polystyrene and acrylic polymers.
Claim 19
Dependent Claim
37 words
The method of claim 16 wherein said phenol formaldehyde resin is selected from the group consisting of p-tertary-butyl phenol formaldehyde resin and p-phenyl phenol formaldehyde resin and said softenable layer is a mixture of styrene and hexylmethacrylate.
References Cited (Backward Citations)
US3801314A
Cited
US3909262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-08 | 1980-08-09 | 1981-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-08 | 1984-08-09 | 1985-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-08 | 1988-08-09 | 1989-02-08 | $7700.00 | Window Closed / Lapsed |