US5718995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite support for an imaging element, and imaging element comprising such composite support
Assignee: Eastman Kodak Co
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Filing: 1996-06-12
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Granted: 1998-02-17
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Expires: 2016-06-12
Abstract
Abstract A composite support for an imaging element is described, which composite support comprises a polymeric film and an electrically conductive layer, wherein the polymeric film comprises a surface which has been activated by energetic treatment, the electrically conductive layer comprises an electrically conductive agent dispersed in an aqueous dispersible polymeric binder comprising an aliphatic, anionic polyurethane having an ultimate elongation to break of at least 350 percent, and the electrically conductive layer is in contiguous contact with the activated surface of the polymeric film. Imaging elements for use in an image-forming process are also described, which element comprise such composite supports and at least one image-forming layer. The invention provides composite supports and imaging elements containing an electrically conductive antistatic layer having excellent adhesion to energetic surface-treated polymer film supports, and of auxiliary layers to the electrically conductive antistatic layer.
Inventors
- 👤 Dennis John Eichorst
- 👤 Cathy Ann Fleischer
- 👤 Jeremy Grace
- 👤 Paul Daniel Yocobucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:15
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/104; B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/41; G03C; G03C1/00; G03C1/76; G03C1/85
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
79 words
A composite support for an imaging element, comprising a polymeric film and an electrically conductive layer, wherein the polymeric film comprises a surface which has been activated by energetic treatment, the electrically conductive layer comprises an electrically conductive agent dispersed in an aqueous dispersible polymeric binder comprising an aliphatic, anionic polyurethane having an ultimate elongation to break of at least 350 percent, and the electrically conductive layer is in contiguous contact with the activated surface of the polymeric film.
Claim 2
Dependent Claim
79 words
A composite support for an imaging element, comprising a polymeric film and an electrically conductive layer, wherein the polymeric film comprises a surface which has been activated by energetic treatment, the electrically conductive layer comprises an electrically conductive agent dispersed in an aqueous dispersible polymeric binder comprising an aliphatic, anionic polyurethane having an ultimate elongation to break of at least 350 percent, and the electrically conductive layer is in contiguous contact with the activated surface of the polymeric film.
Claim 3
Dependent Claim
25 words
A composite support according to claim 1 in which the electrically conductive layer is overcoated with at least one auxiliary layer comprising a polymeric binder.
Claim 4
Dependent Claim
36 words
A composite support according to claim 2 wherein the polymeric binder of the auxiliary layer comprises cellulose or a cellulose derivative, a polyurethane, an acrylic or acrylamide polymer, a polycarbonate, a polyester, a polystyrene, or gelatin.
Claim 5
Dependent Claim
26 words
A composite support according to claim 3 wherein the polymeric binder of the auxiliary layer comprises cellulose nitrate, cellulose diacetate, cellulose triacetate, or cellulose acetate butyrate.
Claim 6
Dependent Claim
18 words
A composite support according to claim 3 wherein the polymeric binder of the auxiliary layer comprises a polyurethane.
Claim 7
Dependent Claim
21 words
A composite support according to claim 3 wherein the polymeric binder of the auxiliary layer comprises an acrylic or acrylamide polymer.
Claim 8
Dependent Claim
18 words
A composite support according to claim 3 wherein the polymeric binder of the auxiliary layer comprises a polycarbonate.
Claim 9
Dependent Claim
18 words
A composite support according to claim 3 wherein the polymeric binder of the auxiliary layer comprises a polyester.
Claim 10
Dependent Claim
18 words
A composite support according to claim 3 wherein the polymeric binder of the auxiliary layer comprises a polystyrene.
Claim 11
Dependent Claim
18 words
A composite support according to claim 2 in which the auxiliary layer is a transparent magnetic recording layer.
Claim 12
Dependent Claim
30 words
A composite support according to claim 10 wherein the transparent magnetic recording layer comprises Fe 2 O 3 or Fe 3 O 4 magnetic particles dispersed in a polymeric binder.
Claim 13
Dependent Claim
49 words
A composite support according to claim 1 wherein the electrically conductive agent comprises fine particles of ZnO, TiO 2 , SnO 2 , Al 2 O 3 , In 2 O 3 , SiO 2 , MgO, BaO, MOO 3 , WO 3 , or a compound oxide thereof.
Claim 14
Dependent Claim
73 words
A composite support according to claim 1 wherein the electrically conductive agent comprises: ZnO which contains from 0.01 mole % to 30 mole % of a dopant comprising Al or In; SnO 2 which contains from 0.01 mole % to 30 mole % of a dopant comprising Sb, Nb, or a halogen atom; or TiO 2 which contains from 0.01 mole % to 30 mole % of a dopant comprising Nb or Ta.
Claim 15
Dependent Claim
56 words
A composite support according to claim 1 wherein the electrically conductive agent comprises antimony doped SnO 2 at an antimony doping level of at least 8 atom % and having an X-ray crystallite size less than 100 Å and an average equivalent circular diameter less than 15 nm but no less than the X-ray crystallite size.
Claim 16
Dependent Claim
18 words
A composite support according to claim 1 wherein the electrically conductive agent comprises electrically conductive metal antimonate particles.
Claim 17
Dependent Claim
18 words
A composite support according to claim 15 wherein the electrically conductive agent comprises zinc antimonate or indium antimonate.
Claim 18
Dependent Claim
16 words
A composite support according to claim 1 wherein the electrically conductive agent comprises vanadium oxide gel.
Claim 19
Dependent Claim
17 words
A composite support according to claim 17 wherein the vanadium oxide gel comprises silver doped vanadium pentoxide.
Claim 20
Dependent Claim
16 words
A composite support according to claim 1 wherein the electrically conductive agent comprises conductive carbon fibers.
Claim 21
Dependent Claim
15 words
A composite support according to claim 1 wherein the polymeric film is a polyester film.
Claim 22
Dependent Claim
17 words
A composite support according to claim 20 wherein the polymeric film comprises polyethylene terephthalate or polyethylene naphthalate.
Claim 23
Dependent Claim
16 words
A composite support according to claim 1 wherein the polymeric film has been surface-treated by corona-discharge.
Claim 24
Dependent Claim
16 words
A composite support according to claim 1 wherein the polymeric film has been surface-treated by glow-discharge.
Claim 25
Dependent Claim
22 words
A composite support according to claim 23 wherein the glow-discharge atmosphere comprised oxygen, nitrogen, helium, argon, carbon dioxide, ammonia, or water vapor.
Claim 26
Dependent Claim
15 words
A composite support according to claim 23 wherein the glow-discharge atmosphere comprised oxygen or nitrogen.
Claim 27
Dependent Claim
19 words
A composite support according to claim 1 wherein the polymeric film has been surface-treated by exposure to ultraviolet radiation.
Claim 28
Dependent Claim
86 words
An imaging element for use in an image-forming process, comprising a support, an image-forming layer, and an electrically conductive layer, wherein the support comprises a polymeric film having a surface which has been activated by energetic treatment, the the electrically conductive layer comprises an electrically conductive agent dispersed in an aqueous dispersible polymeric binder comprising an aliphatic, anionic polyurethane having an ultimate elongation to break of at least 350 percent, and the electrically conductive layer is in contiguous contact with the activated surface of the support.
Claim 29
Dependent Claim
86 words
An imaging element for use in an image-forming process, comprising a support, an image-forming layer, and an electrically conductive layer, wherein the support comprises a polymeric film having a surface which has been activated by energetic treatment, the the electrically conductive layer comprises an electrically conductive agent dispersed in an aqueous dispersible polymeric binder comprising an aliphatic, anionic polyurethane having an ultimate elongation to break of at least 350 percent, and the electrically conductive layer is in contiguous contact with the activated surface of the support.
Claim 30
Dependent Claim
26 words
An imaging element according to claim 27 in which the electrically conductive layer and the image forming layer are on the same side of the support.
Claim 31
Dependent Claim
24 words
An imaging element according to claim 27 in which the electrically conductive layer and image forming layer are on opposite sides of the support.
Claim 32
Dependent Claim
20 words
An imaging element according to claim 27 in which the image forming layer comprises silver halide grains dispersed in gelatin.
Claim 33
Dependent Claim
120 words
A photographic imaging element comprising a polyester film support, at least one photographic image recording layer comprised of silver halide grains dispersed in a gelatin binder on one side of the support, an electrically conductive layer on the side of the support opposite to the image recording layer, and a transparent magnetic recording layer overlying the electrically conductive layer, wherein the support comprises a surface which has been activated by energetic treatment, the electrically conductive layer comprises an electrically conductive agent dispersed in an aqueous dispersible polymeric binder comprising an aliphatic, anionic polyurethane having an ultimate elongation to break of at least 350 percent, and the electrically conductive layer is in contiguous contact with the activated surface of the support.
Claim 34
Dependent Claim
120 words
A photographic imaging element comprising a polyester film support, at least one photographic image recording layer comprised of silver halide grains dispersed in a gelatin binder on one side of the support, an electrically conductive layer on the side of the support opposite to the image recording layer, and a transparent magnetic recording layer overlying the electrically conductive layer, wherein the support comprises a surface which has been activated by energetic treatment, the electrically conductive layer comprises an electrically conductive agent dispersed in an aqueous dispersible polymeric binder comprising an aliphatic, anionic polyurethane having an ultimate elongation to break of at least 350 percent, and the electrically conductive layer is in contiguous contact with the activated surface of the support.
Claim 35
Dependent Claim
30 words
A photographic imaging element according to claim 31, further comprising a permeability control layer for reduced water permeability coated between the electrically conductive layer and the transparent magnetic recording layer.
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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) | 2001-02-16 | 2001-08-18 | 2002-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-16 | 2005-08-18 | 2006-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-16 | 2009-08-18 | 2010-02-17 | $7700.00 | Window Closed / Lapsed |