Patent US6190846B1 successfully refreshed from Google Patents.
US6190846B1
Expired / Lapsed
US
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Abrasion resistant antistatic with electrically conducting polymer for imaging element
Assignee: Eastman Kodak Co
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Filing: 1998-10-15
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Granted: 2001-02-20
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Expires: 2018-10-15
Abstract
Abstract The present invention is an imaging element which includes a support, an image-forming layer superposed on the support and an electrically-conductive layer superposed on the support. The electrically-conductive layer is composed of an electrically-conductive polymer and a polyurethane film-forming binder having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 psi.
Inventors
- 👤 Debasis Majumdar
- 👤 Dennis J. Eichorst
- 👤 Kenneth L. Tingler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:11
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; B41M5/44; G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; G03G; G03G7/00; G03G7/0006; G03G7/002; G03G7/0026; G03G7/004; G03G7/0046; G03G7/006; G03G7/0073; G03G7/008; B41M5/41; G03C1/005; G03C1/04; G03C1/77; G03C1/775; G03C1/795; G03C1/7954; G03C2001/7952
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
58 words
An imaging element comprising: a support; an image-forming layer superposed on the support; and an electrically-conductive layer superposed on the support; said electrically-conductive layer comprising 3,4-dialkoxy substituted polythiophene styrene sulfonate and a polyurethane film-forming binder having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 psi.
Claim 2
Dependent Claim
58 words
An imaging element comprising: a support; an image-forming layer superposed on the support; and an electrically-conductive layer superposed on the support; said electrically-conductive layer comprising 3,4-dialkoxy substituted polythiophene styrene sulfonate and a polyurethane film-forming binder having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 psi.
Claim 3
Dependent Claim
43 words
The imaging element of claim 1 wherein the support is selected from the group consisting of cellulose nitrate film, cellulose acetate film, poly(vinyl acetal) film, polystyrene film, poly(ethylene terephthalate) film, poly(ethylene naphthalate) film, polycarbonate film, polyethylene films, polypropylene films, glass, metal and paper.
Claim 4
Dependent Claim
20 words
The imaging element of claim 1 wherein said tensile elongation to break has a value of about 50% to 320%.
Claim 5
Dependent Claim
15 words
The imaging element of claim 1 wherein the electrically-conducting layer further comprises a crosslinking agent.
Claim 6
Dependent Claim
12 words
The imaging element of claim 4 wherein the crosslinking agent comprises polyaziridine.
Claim 7
Dependent Claim
22 words
The imaging element of claim 4 wherein the crosslinking agent comprises from 0.5 to about 30 weight % based on the polyurethane.
Claim 8
Dependent Claim
15 words
The imaging element of claim 1 wherein the electrically-conducting layer further comprises a lubricating agent.
Claim 9
Dependent Claim
21 words
The imaging element of claim 1 wherein the electrically-conducting polymer comprises from 0. 1-99 weight % of the electrically conducting layer.
Claim 10
Dependent Claim
19 words
The imaging element of claim 1 wherein the polyurethane binder comprises from 99.9-1 weight % of the electrically-conductive layer.
Claim 11
Dependent Claim
23 words
The imaging element of claim 1 wherein the electrically conducting layer further comprises sulfonated polystyrenes, copolymers of sulfonated styrene-maleic anhydride or polyester ionomers.
Claim 12
Dependent Claim
25 words
The imaging element of claim 1 wherein the electrically-conducting layer comprises a dry weight coverage of between 5 mg/m 2 and 10,000 mg/m 2 .
Claim 13
Dependent Claim
25 words
The imaging element of claim 1 wherein the electrically-conducting layer further comprises surfactants, coating aids, thickeners, coalescing aids, particle dyes, antifoggants, matte beads or lubricants.
Claim 14
Dependent Claim
20 words
The imaging element of claim 3 wherein said tensile elongation to break has a value of about 50% to 210%.
Claim 15
Dependent Claim
64 words
A photographic element comprising: a support; an silver halide image-forming layer superposed on the support; and an electrically-conductive layer superposed on the support; said electrically-conductive layer comprising of an electronically-conductive polymer comprising 3,4-dialoxysubstituted polythiophene styrene sulfonate and a polyurethane film-forming binder having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 psi.
Claim 16
Dependent Claim
64 words
A photographic element comprising: a support; an silver halide image-forming layer superposed on the support; and an electrically-conductive layer superposed on the support; said electrically-conductive layer comprising of an electronically-conductive polymer comprising 3,4-dialoxysubstituted polythiophene styrene sulfonate and a polyurethane film-forming binder having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 psi.
Claim 17
Dependent Claim
25 words
The photographic element of claim 14 wherein the electrically-conducting layer is superposed on a side of the support opposite the silver halide image forming layer.
Claim 18
Dependent Claim
20 words
The photographic element of claim 14 wherein said tensile elongation to break has a value of about 50% to 320%.
Claim 19
Dependent Claim
20 words
The photographic element of claim 16 wherein said tensile elongation to break has a value of about 50% to 210%.
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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) | 2004-02-20 | 2004-08-21 | 2005-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-20 | 2008-08-21 | 2009-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-20 | 2012-08-21 | 2013-02-20 | $7700.00 | Window Closed / Lapsed |