US3839031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode development migration imaging method
Assignee: Xerox Corp
•
Filing: 1969-09-02
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Granted: 1974-10-01
•
Expires: 1989-09-02
Abstract
Abstract A novel migration imaging system having a migration imaging member comrpising migration material in or on a softenable layer, also having a conductive receiving layer and a system for developing migration imaging members by applying a developing medium to an imaging member and having the imaging member adjacent a development electrode.
Inventors
- 👤 J Sankus
- 👤 A Amidon
- 👤 W Goffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:45
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/06; G03G5/00; G03G5/02; G03G5/04; G03G17/00; G03G17/10
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
163 words
AN IMAGING METHOD COMPRISING: PROVIDING AN IMAGING MEMBER COMPRISING A SUBSTRATE SUPPORTING A LAYER OF SUBSTANTIALLY ELECTRICALLY INSULATING SOFTENABLE MATERIAL CONTAINING MIGRATION MARKING MATERIAL, 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 LAYER, FORMING AN ELECTRICAL LATEN IMAGE ON SAID MEMBER, AND THEREAFTER PLACING AN ELECTRICALLY CONDUCTIVE RECEIVING LAYER IN CONTACT WITH THE SOFTENABLE LAYER OF THE IMAGING MEMBER, SAID ELECTRICALLY CONDUCTIVE RECEIVING LAYER BEING ELECTRICALLY BIASES OR ELECTRICALLY GROUNDED, AND DEVELOPING SAID MEMBER BY DECREASING THE RESISTANCE OF THE SOFTENABLE MATERIAL TO MIGRATION OF MIGRATION MARKING MATERIAL IN DEPTH IN THE SOFTENABLE MATERIAL AT LEAST SUFFICIENT TO ALLOW MIGRATION OF MIGRATION MARKING MATERIAL AT LEAST IN DEPTH IN SAID SOFTENABLE MATERIAL WHEREBY THE MIGRATION MARKING SELECTIVELY MIGRATES IN A FIRST IMGAGE CONFIGURATION TOWARD SAID CONDUCTIVE RECEIVING SHEET AND IN A SECOND IMAGE CONFIGURATION COMPLEMENTARY TO SAID FIRST IMAGE CONFIGURATION TOWARD SAID SUBSTRATE.
Claim 2
Dependent Claim
163 words
AN IMAGING METHOD COMPRISING: PROVIDING AN IMAGING MEMBER COMPRISING A SUBSTRATE SUPPORTING A LAYER OF SUBSTANTIALLY ELECTRICALLY INSULATING SOFTENABLE MATERIAL CONTAINING MIGRATION MARKING MATERIAL, 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 LAYER, FORMING AN ELECTRICAL LATEN IMAGE ON SAID MEMBER, AND THEREAFTER PLACING AN ELECTRICALLY CONDUCTIVE RECEIVING LAYER IN CONTACT WITH THE SOFTENABLE LAYER OF THE IMAGING MEMBER, SAID ELECTRICALLY CONDUCTIVE RECEIVING LAYER BEING ELECTRICALLY BIASES OR ELECTRICALLY GROUNDED, AND DEVELOPING SAID MEMBER BY DECREASING THE RESISTANCE OF THE SOFTENABLE MATERIAL TO MIGRATION OF MIGRATION MARKING MATERIAL IN DEPTH IN THE SOFTENABLE MATERIAL AT LEAST SUFFICIENT TO ALLOW MIGRATION OF MIGRATION MARKING MATERIAL AT LEAST IN DEPTH IN SAID SOFTENABLE MATERIAL WHEREBY THE MIGRATION MARKING SELECTIVELY MIGRATES IN A FIRST IMGAGE CONFIGURATION TOWARD SAID CONDUCTIVE RECEIVING SHEET AND IN A SECOND IMAGE CONFIGURATION COMPLEMENTARY TO SAID FIRST IMAGE CONFIGURATION TOWARD SAID SUBSTRATE.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein the conductive receiving layer is permeable to a fluid solvent.
Claim 4
Dependent Claim
121 words
An imaging method comprising: providing an imaging member comprising a substrate supporting a layer of solvent soluble electrically insulating material containing migration marking material, forming an electrical latent image on said imaging member, providing an electrode closely spaced adjacent the free surface of said layer of solvent soluble electrically insulating material, said electrode being electrically grounded or electrically biased without an insulating blocking layer between said imaging member and said electrode, and providing a liquid solvent for said solvent soluble material between said layer of said solvent soluble material and said electrode whereby migration marking material selectively migrates in a first imagewise configuration toward said substrate and in a second imagewise configuration complementary to said first imagewise configuration toward said electrode.
Claim 5
Dependent Claim
121 words
An imaging method comprising: providing an imaging member comprising a substrate supporting a layer of solvent soluble electrically insulating material containing migration marking material, forming an electrical latent image on said imaging member, providing an electrode closely spaced adjacent the free surface of said layer of solvent soluble electrically insulating material, said electrode being electrically grounded or electrically biased without an insulating blocking layer between said imaging member and said electrode, and providing a liquid solvent for said solvent soluble material between said layer of said solvent soluble material and said electrode whereby migration marking material selectively migrates in a first imagewise configuration toward said substrate and in a second imagewise configuration complementary to said first imagewise configuration toward said electrode.
Claim 6
Dependent Claim
12 words
The method of claim 3 wherein said substrate is substantially electrically insulating.
Claim 7
Dependent Claim
28 words
The method of claim 4 wherein the migration marking material is particulate material and said particulate migration marking material is dispersed throughout the layer of solvent soluble material.
Claim 8
Dependent Claim
38 words
The method of claim 4 wherein the migration marking material is in the form of a fracturable layer of migration marking material contiguous the surfAce of the layer of the solvent soluble material spaced apart from the substrate.
Claim 9
Dependent Claim
28 words
The method of claim 6 wherein the imaging member additionally comprises a second layer of solvent soluble electrically insulating material overlying the fracturable layer of migration marking material.
Claim 10
Dependent Claim
34 words
The method of claim 3 wherein the solvent is provided between the layer of solvent soluble material and the electrode by placing said imaging member and said electrode in a volume of said solvent.
Claim 11
Dependent Claim
14 words
The method of claim 4 wherein the migration marking material comprises electrically photosensitive material.
Claim 12
Dependent Claim
14 words
The method of claim 5 wherein the migration marking material comprises electrically photosensitive material.
Claim 13
Dependent Claim
38 words
The method of claim 9 wherein the electrical latent image is provided by steps comprising substantially uniformly electrostatically charging the surface of the imaging member, and imagewise exposing said member with an image pattern of activating electromagnetic radiation.
Claim 14
Dependent Claim
45 words
The method of claim 10 wherein the electrical latent image is provided by steps comprising substantially uniformly electrostatically charging the surface of the imaging member with a charge of a first polarity, and imagewise exposing said member with an image pattern of activating electromagnetic radiation.
Claim 15
Dependent Claim
64 words
The method of claim 12 wherein before performing the charge and expose steps of claim 12 the imaging member is pre-charged by steps comprising: contacting the electrically insulating substrate to an electrically grounded electrically conductive member, and substantially uniformly electrostatically charging said member with a charge of opposite polarity from said first polarity, while simultaneously substantially uniformly flooding said member with activating electromagnetic radiation.
Claim 16
Dependent Claim
59 words
The method of claim 12 wherein the migration marking material in the imagewise unexposed areas of the imaging member migrate in said first imagewise configuration toward the electrically insulating substrate, and the migration marking material in the imagewise exposed areas of the imaging member migrate in said second imagewise configuration complementary to said first imagewise configuration toward said electrode.
Claim 17
Dependent Claim
26 words
The method of claim 3 wherein said layer of solvent soluble material is of a thickness in the range between about 1/2 and about 16 microns.
Claim 18
Dependent Claim
27 words
The method of claim 3 wherein said migration marking material is particulate material of average particle size in the range between about 0.01 and about 3 microns.
Claim 19
Dependent Claim
26 words
The method of claim 16 wherein said particulate migration marking material is of average particle size in the range between about 0.5 and about 1 micron.
Claim 20
Dependent Claim
12 words
The method of claim 1 wherein said substrate is substantially electrically insulating.
Claim 21
Dependent Claim
12 words
The method of claim 1 wherein said substrate is substantially electrically conductive.
Claim 22
Dependent Claim
11 words
The method of claim 1 wherein said substrate is substantially transparent.
Claim 23
Dependent Claim
27 words
The method of claim 1 wherein the migration marking material is particulate material and said particulate migration marking material is dispersed throughout the layer of softenable material.
Claim 24
Dependent Claim
36 words
The method of claim 1 wherein the migration marking material is in the form of a fracturable layer of migration marking material contiguous the surface of the layer of softenable material spaced apart from the substrate.
Claim 25
Dependent Claim
28 words
The method of claim 22 wherein the imaging member additionally comprises a second layer of substantially electrically insulating softenable material overlying the fracturable layer of migration marking material.
Claim 26
Dependent Claim
14 words
The method of claim 1 wherein the migration marking material comprises electrically photosensitive material.
Claim 27
Dependent Claim
44 words
The method of claim 24 wherein the electrical latent image is provided by steps comprising substantially uniformly electrostatically charging the surface of the imaging member with a charge of one polarity and imagewise exposing said member witH an image pattern of activating electromagnetic radiation.
Claim 28
Dependent Claim
28 words
The method of claim 24 wherein said layer of substantially electrically insulating softenable material is of a thickness in the range between about 1/2 and about 16 microns.
Claim 29
Dependent Claim
27 words
The method of claim 1 wherein said migration marking material is particulate material of average particle size in the range between about 0.01 and about 3 microns.
Claim 30
Dependent Claim
24 words
The method of claim 27 wherein said particulate material is of aveage particle size in the range between about 0.05 and about 1 micron.
Claim 31
Dependent Claim
57 words
The method of claim 1 wherein said member is developed by applying a liquid solvent for said softenable material to the imaging member whereby portions of said electrically insulating layer and selective portions of said migration marking material are removed and selective other portions of said migration marking material migrate at least in depth toward said substrate.
Claim 32
Dependent Claim
43 words
The method of claim 1 wherein said member is developed by applying a vaporous solvent for said softenable material to the imaging member, said vaporous solvent being at least capable of softening said softenable material to allow migration of said migration marking material.
Claim 33
Dependent Claim
29 words
The method of claim 1 wherein said member is developed by heating the softenable material sufficiently to soften the softenable material to allow migration of said migration marking material.
Claim 34
Dependent Claim
98 words
The method of claim 25 wherein the substrate is substantially electrically insulating and the migration marking material comprising electrically photosensitive material is dispersed throughout the layer of softenable material and wherein before performing the charge and expose steps of claim 25, the imaging member is pre-charged by steps comprising: contacting the electrically insulating substrate to an electrically grounded electrically conductive member, and substantially uniformly electrostatically charging said member with a charge of opposite polarity from the said one polarity of charge used in the subsequent charge step, while simultaneously substantially uniformly flooding said member with activating electromagnetic radiation.
Claim 35
Dependent Claim
14 words
The method of claim 1 comprising separating the receiving sheet and the imaging member.
Claim 36
Dependent Claim
14 words
The method of claim 29 comprising separating the receiving sheet and the imaging member.
Claim 37
Dependent Claim
40 words
The method of claim 29 wherein said electrically insulating layer and said selective portions of said migration marking material are substantially removed and said selective other portions of said migration marking material are deposited on said substrate in image configuration.
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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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |