Patent US4388844A successfully refreshed from Google Patents.
Patent US4081273A successfully refreshed from Google Patents.
US4081273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Migration imaging method
Assignee: Xerox Corp
•
Filing: 1970-07-13
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Granted: 1978-03-28
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Expires: 1990-07-13
Abstract
Abstract A migration imaging system wherein migration imaging members typically comprising a substrate, a layer of softenable material, and migration marking material, additionally comprises an overlayer of electrically conductive material which is electrically connected to electrically charge the imaging member.
Inventors
- 👤 William L. Goffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:12
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/10
Claims Analysis
Total Claims: 56
Claim 1
Independent Claim
198 words
An imaging process comprising: providing an imaging member comprising a substrate, a substantially electrically insulating softenable layer, a fracturable layer of migration marking material contiguous the surface of and contacting the softenable layer spaced apart from the substrate, said softenable layer 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, and providing an electically conductive member contacting the surface of said softenable layer spaced apart from the substrate; either said conductive member of said substrate and said softenable layers being at least partially transparent to said activating electromagnetic radiation set forth below; electrically latently imaging said imaging member by imagewise exposing said member through the transparent side thereof to activating electromagnetic radiation and electrically connecting said electrically conductive member to a first electrical potential and contacting the substrate to ground or to an electrical potential different from the first electrical potential, said imagewise exposure and electrically connecting steps being substantially simultaneous, and developing said imaged member by decreasing the resistance to migration of migration marking material in depth in said softenable layer, said development step occurring after said imagewise exposure begins.
Claim 2
Dependent Claim
198 words
An imaging process comprising: providing an imaging member comprising a substrate, a substantially electrically insulating softenable layer, a fracturable layer of migration marking material contiguous the surface of and contacting the softenable layer spaced apart from the substrate, said softenable layer 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, and providing an electically conductive member contacting the surface of said softenable layer spaced apart from the substrate; either said conductive member of said substrate and said softenable layers being at least partially transparent to said activating electromagnetic radiation set forth below; electrically latently imaging said imaging member by imagewise exposing said member through the transparent side thereof to activating electromagnetic radiation and electrically connecting said electrically conductive member to a first electrical potential and contacting the substrate to ground or to an electrical potential different from the first electrical potential, said imagewise exposure and electrically connecting steps being substantially simultaneous, and developing said imaged member by decreasing the resistance to migration of migration marking material in depth in said softenable layer, said development step occurring after said imagewise exposure begins.
Claim 3
Dependent Claim
39 words
The process of claim 1 wherein the softenable layer is of a thickness in the range between about 1/2 and about 16 microns, and the migration marking material is of average particle size not greater than about 2 microns.
Claim 4
Dependent Claim
24 words
The process of claim 1 wherein said fracturable layer is of a thickness in the range between about 0.01 microns and about 2 microns.
Claim 5
Dependent Claim
16 words
The process of claim 1 wherein said substrate is sufficiently transparent to transmit activating electromagnetic radiation.
Claim 6
Dependent Claim
18 words
The process of claim 1 wherein said electrically conductive member is sufficiently transparent to transmit activating electromagnetic radiation.
Claim 7
Dependent Claim
11 words
The process of claim 1 wherein said substrate is electrically conductive.
Claim 8
Dependent Claim
47 words
The process of claim 1 wherein said substrate is substantially electrically insulating and said member is electrically latently imaged while said insulating substrate is substantially everywhere contacting a conductive member which is electrically grounded or electrically connected to the opposite pole of the source of electrical potential.
Claim 9
Dependent Claim
22 words
The process of claim 1 wherein the imaging member comprising the substrate, softenable layer and migration marking material comprises electrically photosensitive material.
Claim 10
Dependent Claim
14 words
The process of claim 8 wherein said migration marking material comprises electrically photosensitive material.
Claim 11
Dependent Claim
14 words
The process of claim 8 wherein the softenable layer comprises electrically photosensitive softenable material.
Claim 12
Dependent Claim
49 words
The process of claim 1 wherein the electrically conductive member comprises a composite member comprising an electrically conductive member overlying a layer of material which is more insulating than the electrically conductive portion of the composite member, and said more insulating layer contacts the surface of the softenable layer.
Claim 13
Dependent Claim
20 words
The process of claim 11 wherein said more insulating layer is of a thickness not greater than about 75 microns.
Claim 14
Dependent Claim
14 words
The process of claim 11 wherein said more insulating layer comprises an insulating liquid.
Claim 15
Dependent Claim
21 words
The process of claim 1 wherein the electrically conductive member is in a shape corresponding to the desired electrical latent image.
Claim 16
Dependent Claim
24 words
The process of claim 1 wherein said softenable layer and said supporting substrate are separate members and are brought into contact with each other.
Claim 17
Dependent Claim
24 words
The process of claim 1 wherein said softenable layer and said conductive member are separate members and are brought into contact with each other.
Claim 18
Dependent Claim
37 words
The process of claim 13 wherein said electrically conductive member is coated with said liquid layer, the surface of the softenable layer is brought into contact with said liquid layer and then separated from said liquid layers.
Claim 19
Dependent Claim
179 words
An imaging process comprising: providing an imaging member comprising a substrate, a substantially electrically insulating softenable layer containing migration marking material, said softenable layer capable of having its resistance to migration of migration marking material decreased sufficienty to allow migration of migration marking material in depth in said softenable material, and providing an electrically conductive member contacting the surface of said softenable layer spaced apart from the substrate, either said conductive member or said substrate and softenable layers being at least partially transparent to said activating electromagnetic radiation set forth below; electrically latently imaging said imaging member by imagewise exposing said member through the transparent side thereof to activating electromagnetic radiation and electrically connecting said electrically conductive member to a first electrical potential and contacting the substrate to ground or to an electrical potential different from the first electrical potential, said imagewise exposure and electrically connecting steps being substantially simultaneous, and developing said imaged member by softening said softenable layer at least sufficient to allow imagewise migration of migration marking material at least in depth in said softenable layer.
Claim 20
Dependent Claim
179 words
An imaging process comprising: providing an imaging member comprising a substrate, a substantially electrically insulating softenable layer containing migration marking material, said softenable layer capable of having its resistance to migration of migration marking material decreased sufficienty to allow migration of migration marking material in depth in said softenable material, and providing an electrically conductive member contacting the surface of said softenable layer spaced apart from the substrate, either said conductive member or said substrate and softenable layers being at least partially transparent to said activating electromagnetic radiation set forth below; electrically latently imaging said imaging member by imagewise exposing said member through the transparent side thereof to activating electromagnetic radiation and electrically connecting said electrically conductive member to a first electrical potential and contacting the substrate to ground or to an electrical potential different from the first electrical potential, said imagewise exposure and electrically connecting steps being substantially simultaneous, and developing said imaged member by softening said softenable layer at least sufficient to allow imagewise migration of migration marking material at least in depth in said softenable layer.
Claim 21
Dependent Claim
193 words
An imaging process comprising: providing an imaging member comprising a substrate, a substantially electrically insulating softenable layer containing migration marking material, said softenable layer 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, and providing an electrically conductive member contacting the surface of said softenable layer spaced apart from the substrate; either said conductive member or said substrate and said softenable layers being at least partially transparent to said activating electromagnetic radiation set forth below; electrically latently imaging said imaging member by imagewise exposing said member through the transparent side thereof to activating electromagnetic radiation and electrically connecting said electrically conductive member to a first electrical potential and contacting the substrate to ground or to an electrical potential different from the first electrical potential, said imagewise exposure and electrically connecting steps being substantially simultaneous, and developing said imaged member by removing the softenable material and unmigrated material by contacting the imaged member with a solvent liquid which dissolves said softenable layer and washes away said unmigrated material, said development step occurring after said imagewise exposure begins.
Claim 22
Dependent Claim
193 words
An imaging process comprising: providing an imaging member comprising a substrate, a substantially electrically insulating softenable layer containing migration marking material, said softenable layer 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, and providing an electrically conductive member contacting the surface of said softenable layer spaced apart from the substrate; either said conductive member or said substrate and said softenable layers being at least partially transparent to said activating electromagnetic radiation set forth below; electrically latently imaging said imaging member by imagewise exposing said member through the transparent side thereof to activating electromagnetic radiation and electrically connecting said electrically conductive member to a first electrical potential and contacting the substrate to ground or to an electrical potential different from the first electrical potential, said imagewise exposure and electrically connecting steps being substantially simultaneous, and developing said imaged member by removing the softenable material and unmigrated material by contacting the imaged member with a solvent liquid which dissolves said softenable layer and washes away said unmigrated material, said development step occurring after said imagewise exposure begins.
Claim 23
Dependent Claim
37 words
The imaging process of claim 1 wherein the resistance to migration is decreased by softening said softenable layer at least sufficient to allow imagewise migration of migration marking material at least in depth in said softenable layer.
Claim 24
Dependent Claim
41 words
The imaging process of claim 1 wherein the resistance to migration is decreased by applying a liquid solvent to said softenable layer which removes the softenable material and unmigrated material, and dissolves said softenable layer and washes away the unmigrated material.
Claim 25
Dependent Claim
29 words
The process of claim 18 wherein said migration marking material initially comprises a fracturable layer contiguous and contacting the surface of the softenable layer spaced apart from the substrate.
Claim 26
Dependent Claim
24 words
The process of claim 22 wherein said fracturable layer is of a thickness in the range between about 0.01 micron and about 2 microns.
Claim 27
Dependent Claim
17 words
The process of claim 18 wherein the migration marking material is initially dispersed throughout said softenable layer.
Claim 28
Dependent Claim
16 words
The process of claim 18 wherein said substrate is sufficiently transparent to transmit activating electromagnetic radiation.
Claim 29
Dependent Claim
18 words
The process of claim 18 wherein said electrically conductive member is sufficiently transparent to transmit activating electromagnetic radiation.
Claim 30
Dependent Claim
11 words
The process of claim 18 wherein said substrate is electrically conductive.
Claim 31
Dependent Claim
47 words
The process of claim 18 wherein said substrate is substantially electrically insulating and said member is electrically latently imaged while said insulating substrate is substantially everywhere contacting a conductive member which is electrically grounded or electrically connected to the opposite pole of the source of electrical potential.
Claim 32
Dependent Claim
22 words
The process of claim 18 wherein the imaging member comprising the substrate, softenable layer and migration marking material comprises electrically photosensitive material.
Claim 33
Dependent Claim
14 words
The process of claim 29 wherein said migration marking material comprises electrically photosensitive material.
Claim 34
Dependent Claim
14 words
The process of claim 29 wherein the softenable layer comprises electrically photosensitive softenable material.
Claim 35
Dependent Claim
49 words
The process of claim 18 wherein the electrically conductive member comprises a composite member comprising an electrically conductive member overlying a layer of material which is more insulating than the electrically conductive portion of the composite member, and said more insulating layer contacts the surface of the softenable layer.
Claim 36
Dependent Claim
20 words
The process of claim 32 wherein said more insulating layer is of a thickness not greater than about 75 microns.
Claim 37
Dependent Claim
14 words
The process of claim 32 wherein said more insulating layer comprises an insulating liquid.
Claim 38
Dependent Claim
24 words
The process of claim 18 wherein said softenable layer and said conductive member are separate members and are brought into contact with each other.
Claim 39
Dependent Claim
37 words
The process of claim 34 wherein said electrically conductive member is coated with said liquid layer, the surface of the softenable layer is brought into contact with said liquid layer and then separated from said liquid layers.
Claim 40
Dependent Claim
39 words
The process of claim 19 wherein the softenable layer is of a thickness in the range between about 1/2 and about 16 microns, and the migration marking material is of average particle size not greater than about 2 microns.
Claim 41
Dependent Claim
29 words
The process of claim 19 wherein said migration marking material initially comprises a fracturable layer contiguous and contacting the surface of the softenable layer spaced apart from the substrate.
Claim 42
Dependent Claim
24 words
The process of claim 38 wherein said fracturable layer is of a thickness in the range between about 0.01 microns and about 2 microns.
Claim 43
Dependent Claim
17 words
The process of claim 19 wherein the migration marking material is initially dispersed throughout said softenable layer.
Claim 44
Dependent Claim
16 words
The process of claim 19 wherein said substrate is sufficiently transparent to transmit activating electromagnetic radiation.
Claim 45
Dependent Claim
18 words
The process of claim 19 wherein said electrically conductive member is sufficiently transparent to transmit activating electromagnetic radiation.
Claim 46
Dependent Claim
11 words
The process of claim 19 wherein said substrate is electrically conductive.
Claim 47
Dependent Claim
47 words
The process of claim 19 wherein said substrate is substantially electrically insulating and said member is electrically latently imaged while said insulating substrate is substantially everywhere contacting a conductive member which is electrically grounded or electrically connected to the opposite pole of the source of electrical potential.
Claim 48
Dependent Claim
22 words
The process of claim 19 wherein the imaging member comprising the substrate, softenable layer and migration marking material comprises electrically photosensitive material.
Claim 49
Dependent Claim
14 words
The process of claim 45 wherein said migration marking material comprises electrically photosensitive material.
Claim 50
Dependent Claim
14 words
The process of claim 45 wherein the softenable layer comprises electrically photosensitive softenable material.
Claim 51
Dependent Claim
49 words
The process of claim 19 wherein the electrically conductive member comprises a composite member comprising an electrically conductive member overlying a layer of material which is more insulating than the electrically conductive portion of the composite member, and said more insulating layer contacts the surface of the softenable layer.
Claim 52
Dependent Claim
20 words
The process of claim 48 wherein said more insulating layer is of a thickness not greater than about 75 microns.
Claim 53
Dependent Claim
14 words
The process of claim 48 wherein said more insulating layer comprises an insulating liquid.
Claim 54
Dependent Claim
24 words
The process of claim 19 wherein said softenable layer and said supporting substrate are separate members and are brought into contact with each other.
Claim 55
Dependent Claim
24 words
The process of claim 19 wherein said softenable layer and said conductive member are separate members and are brought into contact with each other.
Claim 56
Dependent Claim
37 words
The process of claim 50 wherein said electrically conductive member is coated with said liquid layer, the surface of the softenable layer is brought into contact with said liquid layer and then separated from said liquid layers.
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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) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |