US3866236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging process using vertical particle migration
Assignee: Xerox Corp
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Filing: 1974-04-22
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Granted: 1975-02-11
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Expires: 1994-04-22
Abstract
Abstract An imaging process wherein an imaging member comprising a liquid film supported on a substrate and in contact with migration material is employed. The migration material is caused to imagewise selectively migrate through the liquid film to the supporting substrate by subjecting the migration material to an imagewise migration force.
Inventors
- 👤 William L Goffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:52
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/165; G02F1/166; G02F1/167; G03; G03G; G03G17/00; G03G17/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
An imaging method comprising the steps of: (a) providing an imaging member comprising a substantially electrically insulating liquid layer containing nonphotosensitive migration material, on a substrate; (b) then applying a uniform electrical imagewise migration force other than by a technique wherein an essential step is imagewise exposure to activating electromagnetic radiation, to said migration material whereby said migration material migrates without material lateral migration, in depth an imagewise configuration to said substrate leaving portions of said insulating liquid layer above areas of migration substantially devoid of migration material everywhere said uniform electrical imagewise migration force was applied.
Claim 2
Dependent Claim
97 words
An imaging method comprising the steps of: (a) providing an imaging member comprising a substantially electrically insulating liquid layer containing nonphotosensitive migration material, on a substrate; (b) then applying a uniform electrical imagewise migration force other than by a technique wherein an essential step is imagewise exposure to activating electromagnetic radiation, to said migration material whereby said migration material migrates without material lateral migration, in depth an imagewise configuration to said substrate leaving portions of said insulating liquid layer above areas of migration substantially devoid of migration material everywhere said uniform electrical imagewise migration force was applied.
Claim 3
Dependent Claim
18 words
The method according to claim 1 wherein said imaging member comprises non-photosensitive migration material dispersed in said liquid.
Claim 4
Dependent Claim
26 words
The method according to claim 1 wherein the migration force is applied to said migration material by means of a corona discharge device through a stencil.
Claim 5
Dependent Claim
12 words
The method according to claim 2 wherein said migration material is graphite.
Claim 6
Dependent Claim
24 words
The method according to claim 1 including the additional steps of removing the unmigrated migration material from said imaging member after imagewise migration occurs.
Claim 7
Dependent Claim
18 words
The method according to claim 5 wherein said liquid layer is removed together with the unmigrated migration material.
Claim 8
Dependent Claim
33 words
The method according to claim 5 wherein the unmigrated material is removed by contacting the imaged member to a receiver surface and inserting an external electric field acting on the unmigrated migration material.
Claim 9
Dependent Claim
17 words
The method according to claim 5 wherein said removal is accommplished by means of an air knife.
Claim 10
Dependent Claim
19 words
The method accoding to claim 5 wherein said removal is accomplished by immersing the imaged member in a liquid.
Claim 11
Dependent Claim
22 words
The method according to claim 5 wherein the average particle size of the migration material is between about 0.01 and 2.0 microns.
Claim 12
Dependent Claim
24 words
The method according to claim 10 wherein said liquid layer is in the range of from about one-half to about 16 microns in thickness.
Claim 13
Dependent Claim
29 words
The method according to claim 1 wherein said imagewise migration force comprises an imagewise electrical force supplied by means of a shaped electrode operatively associated with said imaging member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |