US5514528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element having improved backing layer performance
Assignee: Eastman Kodak Co
•
Filing: 1995-02-17
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Granted: 1996-05-07
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Expires: 2015-02-17
Abstract
Abstract A photographic element comprising a polyester support and at least one light-sensitive layer on one side of the polyester support, an antistatic layer on the other side of the support, the antistatic layer including a conductive metal oxide in a hydrophilic binder, the antistatic layer being overcoated with a layer containing a cellulose ester binder, and a solvent cast subbing layer disposed between the antistatic layer and the polyester support.
Inventors
- 👤 Janglin Chen
- 👤 John F. DeCory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:19
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/853; G03C1/91; G03C11/00; G03C11/02; G03C1/7614; G03C1/795; G03C1/7954; G03C1/93; G03C7/00; G03C7/30; G03C7/3029
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
79 words
A photographic element comprising a polyester support and at least one light-sensitive layer on one side of the polyester support, an antistatic layer on the other side of the support, the antistatic layer including a conductive metal oxide in a hydrophilic binder, the antistatic layer being overcoated with a layer containing a cellulose ester binder, and a solvent cast subbing layer disposed between the antistatic layer and the polyester support, the subbing layer being an addition or condensation polymer.
Claim 2
Dependent Claim
79 words
A photographic element comprising a polyester support and at least one light-sensitive layer on one side of the polyester support, an antistatic layer on the other side of the support, the antistatic layer including a conductive metal oxide in a hydrophilic binder, the antistatic layer being overcoated with a layer containing a cellulose ester binder, and a solvent cast subbing layer disposed between the antistatic layer and the polyester support, the subbing layer being an addition or condensation polymer.
Claim 3
Dependent Claim
14 words
The photographic element of claim 1 wherein the subbing layer is an addition polymer.
Claim 4
Dependent Claim
18 words
The photographic element of claim 2 wherein the addition polymer is a copolymer that contains vinylidene chloride moieties.
Claim 5
Dependent Claim
17 words
The photographic element of claim 2 wherein the addition polymer is a copolymer that contains acrylonitrile moieties.
Claim 6
Dependent Claim
20 words
The photographic element of claim 2 wherein the addition polymer is a terpolymer of vinylidene chloride, acrylonitrile and acrylic acid.
Claim 7
Dependent Claim
18 words
The photographic element of claim 2 wherein the addition polymer is a copolymer of vinylidene chloride and acrylonitrile.
Claim 8
Dependent Claim
41 words
The photographic element of claim 1 wherein the polyester support is polyethylene terephthalate, polyethylene naphthalate, blends of polyethylene terephthalate with polyesters, polycarbonates, or polyurethanes, blends of polyethylene naphthalate with polyesters, polycarbonates, or polyurethanes, or polyester copolymers containing terephthalate or naphthalate units.
Claim 9
Dependent Claim
20 words
The photographic element of claim 1 wherein the metal oxide is tin oxide, vanadium pentoxide, zinc antimonate, or indium antimonate.
Claim 10
Dependent Claim
21 words
The photographic element of claim 1 wherein the cellulose ester layer overcoating the antistatic layer is a transparent magnetic recording layer.
Claim 11
Dependent Claim
21 words
The photographic element of claim 9 wherein a polymer layer is disposed between the magnetic recording layer and the antistatic layer.
Claim 12
Dependent Claim
17 words
The photographic element of claim 10 wherein the polymer layer is cellulose diacetate, cellulose triacetate, or polymethylmethacrylate.
Claim 13
Dependent Claim
18 words
The photographic element of claim 9 wherein a lubricating layer is disposed on the transparent magnetic recording layer.
Claim 14
Independent Claim
58 words
A method of making a photographic film support having a plurality of backing layers applied thereto which comprises applying a polymeric subbing layer from an organic solvent to a polyester film base, applying an antistatic layer of a conductive metal oxide in a hydrophilic binder to the subbing layer, applying a cellulose ester layer to the antistatic layer.
Claim 15
Independent Claim
58 words
A method of making a photographic film support having a plurality of backing layers applied thereto which comprises applying a polymeric subbing layer from an organic solvent to a polyester film base, applying an antistatic layer of a conductive metal oxide in a hydrophilic binder to the subbing layer, applying a cellulose ester layer to the antistatic layer.
Claim 16
Dependent Claim
15 words
The method of claim 13 wherein the subbing layer is an addition or condensation polymer.
Claim 17
Dependent Claim
13 words
The method of claim 14 wherein the subbing layer is an addition polymer.
Claim 18
Dependent Claim
19 words
The method of claim 15 wherein the addition polymer is a terpolymer of acrylic acid, acrylonitrile and vinylidene chloride.
Claim 19
Dependent Claim
17 words
The method of claim 15 wherein the addition polymer is a copolymer of vinylidene chloride and acrylonitrile.
Claim 20
Dependent Claim
11 words
The method of claim 13 wherein the solvent is a ketone.
Claim 21
Dependent Claim
16 words
The method of claim 18 wherein the ketone is methyl ethyl ketone, acetone, or mixtures thereof.
Claim 22
Dependent Claim
23 words
The method of claim 13 wherein the metal oxide of the antistatic layer is tin oxide, vanadium pentoxide, zinc antimonate, or indium antimonate.
Claim 23
Dependent Claim
20 words
The method of claim 13 wherein the cellulose ester layer overcoating the antistatic layer is a 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) | 1999-05-07 | 1999-11-06 | 2000-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-07 | 2003-11-06 | 2004-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-07 | 2007-11-06 | 2008-05-07 | $7700.00 | Window Closed / Lapsed |