US3926626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circulation imaging method
Assignee: Xerox Corp
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Filing: 1973-01-29
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Granted: 1975-12-16
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Expires: 1993-01-29
Abstract
Abstract Images are formed by the selective electrical mixing of materials to alter physical and/or chemical properties in imagewise configuration. The materials are conveniently provided in an imaging member having a circulation layer, and one or more layers of materials the mixing of which results in a physical and/or chemical property which is distinct from that of at least one of the individual materials.
Inventors
- 👤 Lloyd Bean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:29
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/08; G03G13/00; G03G13/22
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
209 words
A METHOD FOR IMAGING COMPRISING: A. PROVIDING AN IMAGING MEMBER COMPRISING ON AN ABOUT 1 TO ABOUT 12 MICRON THICK SOFTENABLE CIRCULATION LAYER A SOFTENABLE PHOTOCONDUCTIVE LAYER OF ABOUT 0.5 TO ABOUT 5 MICRON THICKNESS; EACH OF SAID LAYERS COMPRISING ELECTRICALLY INSULATING SOFTENABLE MATERIAL AND SAID PHOTOCONDUCTIVE LAYER COMPRISING A VOLUME RATIO OF ABOUT 1.8 TO ABOUT 7:1 PHOTOSENSITIVE PARTICLES DISPERSED IN SOFTENABLE MATERIAL; SAID SOFTENABLE LAYERS CAPABLE OF HAVING THEIR VISCOSITY REDUCED SO AS TO ALLOW CIRCULATION OF MATERIALS THEREIN THE RESPONSE TO A CHARGE DENSITY, OF FROM ABOUT 10 TO ABOUT 80 VOLTS PER MICRON AND CAST FROM MATERIALS SUFFICIENTLY DISSIMILAR WHEREIN MIXING OF IMAGING MEMBER LAYERS IN BULK IN THE ABSENCE OF CIRCULATION IS PREVENTED; B. CHARGING THE SURFACE OF SAID IMAGING MEMBER AT LEAST AT SAID CHARGE DENSITY; C. IMAGEWISE EXPOSING SAID IMAGING MEMBER TO ACTIVATING ELECTROMAGNETIC RADIATION; AND D. SOFTENING SAID SOFTENABLE LAYERS BY REDUCING THEIR VISCOSITY WHEREIN CIRCULATION OF SAID SOFTENABLE LAYERS OCCURS SUFFICIENTLY TO EFFECT BULK MIXING OF SAID SOFTENABLE LAYERS IN NON-IMAGEWISE-EXPOSED PORTIONS OF SAID IMAGING MEMBER; THE RESULTANT MIXTURE OF SAID LAYERS HAVING AT LEAST ONE CHEMICAL OR PHYSICAL PROPERTY THAT IS DISTINCT FROM THAT OF AT LEAST ONE OF SAID SOFTENABLE LAYERS IN UNMIXED PORTIONS OF SAID IMAGING MEMBER.
Claim 2
Independent Claim
209 words
A METHOD FOR IMAGING COMPRISING: A. PROVIDING AN IMAGING MEMBER COMPRISING ON AN ABOUT 1 TO ABOUT 12 MICRON THICK SOFTENABLE CIRCULATION LAYER A SOFTENABLE PHOTOCONDUCTIVE LAYER OF ABOUT 0.5 TO ABOUT 5 MICRON THICKNESS; EACH OF SAID LAYERS COMPRISING ELECTRICALLY INSULATING SOFTENABLE MATERIAL AND SAID PHOTOCONDUCTIVE LAYER COMPRISING A VOLUME RATIO OF ABOUT 1.8 TO ABOUT 7:1 PHOTOSENSITIVE PARTICLES DISPERSED IN SOFTENABLE MATERIAL; SAID SOFTENABLE LAYERS CAPABLE OF HAVING THEIR VISCOSITY REDUCED SO AS TO ALLOW CIRCULATION OF MATERIALS THEREIN THE RESPONSE TO A CHARGE DENSITY, OF FROM ABOUT 10 TO ABOUT 80 VOLTS PER MICRON AND CAST FROM MATERIALS SUFFICIENTLY DISSIMILAR WHEREIN MIXING OF IMAGING MEMBER LAYERS IN BULK IN THE ABSENCE OF CIRCULATION IS PREVENTED; B. CHARGING THE SURFACE OF SAID IMAGING MEMBER AT LEAST AT SAID CHARGE DENSITY; C. IMAGEWISE EXPOSING SAID IMAGING MEMBER TO ACTIVATING ELECTROMAGNETIC RADIATION; AND D. SOFTENING SAID SOFTENABLE LAYERS BY REDUCING THEIR VISCOSITY WHEREIN CIRCULATION OF SAID SOFTENABLE LAYERS OCCURS SUFFICIENTLY TO EFFECT BULK MIXING OF SAID SOFTENABLE LAYERS IN NON-IMAGEWISE-EXPOSED PORTIONS OF SAID IMAGING MEMBER; THE RESULTANT MIXTURE OF SAID LAYERS HAVING AT LEAST ONE CHEMICAL OR PHYSICAL PROPERTY THAT IS DISTINCT FROM THAT OF AT LEAST ONE OF SAID SOFTENABLE LAYERS IN UNMIXED PORTIONS OF SAID IMAGING MEMBER.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein said softenable photoconductive layer is sandwiched in between said circulation layer and a second softenable layer.
Claim 4
Dependent Claim
21 words
The method of claim 1 wherein the weight ratio of photosensitive material to binder is from about 1:6 to about 4:1.
Claim 5
Dependent Claim
20 words
The method of claim 1 wherein said photoconductive layer thickness range is from about 0.5 micron to about 1 micron.
Claim 6
Dependent Claim
22 words
The method of claim 1 wherein said softening step (c) comprises the step of uniformly subjecting said imaging member to solvent vapor.
Claim 7
Dependent Claim
21 words
The method of claim 1 wherein said imaging member further comprises a substrate adjacent the free surface of said circulation layer.
Claim 8
Dependent Claim
16 words
The method of claim 1 wherein said at least one physical or chemical property is solubility.
Claim 9
Dependent Claim
29 words
The method of claim 7 further including the step of removing one of mixed and unmixed portions of said imaging member by contacting said imaging member with a solvent.
Claim 10
Dependent Claim
11 words
The method of claim 8 wherein said mixed portions are removed.
Claim 11
Dependent Claim
11 words
The method of claim 8 wherein said unmixed portions are removed.
Claim 12
Dependent Claim
32 words
The method of claim 8 wherein the remaining portions of said imaging member after the step of removing one of mixed and unmixed portions of said imaging member comprises a resist image.
Claim 13
Dependent Claim
17 words
The method of claim 8 wherein the step of removing by contacting with a solvent includes swabbing.
Claim 14
Dependent Claim
25 words
The method of claim 12 wherein said swabbing is for a period of time within the range from about 2 seconds to about 4 seconds.
Claim 15
Dependent Claim
16 words
The method of claim 1 wherein said at least one physical or chemical property is polymerization.
Claim 16
Dependent Claim
28 words
The method of claim 14 wherein said insulating layer is nonpolymerizable and said insulating layer contains an initiator which causes polymerization of the circulation layer upon contact therewith.
Claim 17
Dependent Claim
19 words
The method of claim 14 wherein one of the mixed and unmixed portions of said imaging member is polymerized.
Claim 18
Dependent Claim
29 words
The method of claim 15 wherein one of the polymerized and unpolymerized portions of said imaging member is removed by further contacting said imaging member with a suitable solvent.
Claim 19
Dependent Claim
17 words
The method of claim 1 wherein said at least one physical or chemical property is polymerization susceptibility.
Claim 20
Dependent Claim
54 words
The method of claim 18 wherein said insulating layer contains an inhibitor and said circulation layer is polymerizable upon exposure to U.V. light, further including the step of exposing the mixed and unmixed portions of said imaging member to U.V. light so that the circulation layer in unmixed portions of the imaging member polymerizes.
Claim 21
Dependent Claim
29 words
The method of claim 19 further including the step of contacting the imaging member with a suitable solvent to remove all but the polymerized portions of the circulation layer.
Claim 22
Dependent Claim
16 words
The method of claim 1 wherein said at least one physical or chemical property is color.
Claim 23
Dependent Claim
32 words
The method of claim 21 wherein said circulation layer and said insulating layer each contain a reagent which when combined in mixed portions of said imaging member undergo a color conversion reaction.
Claim 24
Dependent Claim
23 words
The method of claim 1 wherein said electrical field range is from about 30 volts per micron to about 50 volts per micron.
Claim 25
Dependent Claim
20 words
The method of claim 1 wherein said circulation layer thickness range is from about 1 micron to about 6 microns.
Claim 26
Dependent Claim
38 words
The method of claim 1 wherein said softening step (c) comprises the step of uniformly subjecting said imaging member to solvent vapor for a period of time within the range from about 5 seconds to about 15 seconds.
Claim 27
Dependent Claim
18 words
The method of claim 1 wherein said at least one physical or chemical property is contact electrification susceptibility.
Claim 28
Dependent Claim
18 words
The method of claim 26 wherein said at least one physical or chemical property is triboelectric charging susceptibility.
References Cited (Backward Citations)
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US3801314A
Cited
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Cited
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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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |