Patent US5244780A successfully refreshed from Google Patents.
US5244780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Element having adhesion of gelatin and emulsion coatings to polyester film
Assignee: 3M Co
•
Filing: 1991-05-28
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Granted: 1993-09-14
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Expires: 2011-05-28
Abstract
Abstract A polymeric film substrate is first modified, then coated with a polyalkyl acrylate/gelatin layer to improve the wet adhesion of the layer to the substrate. The layer may itself contain a photographic emulsion or emulsion layers may be adhered to that layer.
Inventors
- 👤 Mark A. Strobel
- 👤 Robert L. Carlson
- 👤 Steven L. Ginkel
- 👤 Jeffrey L. Solomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:25
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; G03C1/915; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31717
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
79 words
A support layer comprising a polyester polymeric film having a coating adhered to at least one surface of said film, said at least one surface having a) an oxygen content higher than that of the composition of the film, b) an acidity greater than that of the composition of the film, and c) hydrophilicity which is greater than that of the composition of the film, and said coating comprising a mixture of polyalkyl acrylate or polyalkyl methacrylate and gelatin.
Claim 2
Dependent Claim
79 words
A support layer comprising a polyester polymeric film having a coating adhered to at least one surface of said film, said at least one surface having a) an oxygen content higher than that of the composition of the film, b) an acidity greater than that of the composition of the film, and c) hydrophilicity which is greater than that of the composition of the film, and said coating comprising a mixture of polyalkyl acrylate or polyalkyl methacrylate and gelatin.
Claim 3
Dependent Claim
29 words
The layer of claim 1 wherein said mixture comprises an emulsion of a polyalkyl acrylate or polyalkyl methacrylate having 1 to 8 carbon atoms in the alkyl group thereof.
Claim 4
Dependent Claim
27 words
The layer of claim 2 wherein said emulsion comprises polyethyl acrylate or polybutyl acrylate in a weight to weight ratio to gelatin of from 1:5 to 1.5:1.
Claim 5
Dependent Claim
13 words
The layer of claim 2 wherein said emulsion has photographic silver halide therein.
Claim 6
Dependent Claim
13 words
The layer of claim 3 wherein said emulsion has photographic silver halide therein.
Claim 7
Dependent Claim
23 words
The layer of claim 1 wherein said coating has a layer adhered thereto which comprises photographic silver halide in a hydrophilic colloidal binder.
Claim 8
Dependent Claim
23 words
The layer of claim 2 wherein said coating has a layer adhered thereto which comprises photographic silver halide in a hydrophilic colloidal binder.
Claim 9
Dependent Claim
23 words
The layer of claim 3 wherein said coating has a layer adhered thereto which comprises photographic silver halide in a hydrophilic colloidal binder.
Claim 10
Dependent Claim
13 words
The support layer of claim 1 wherein said polymeric film comprises poly(ethylene terephthalate).
Claim 11
Dependent Claim
13 words
The support layer of claim 2 wherein said polymeric film comprises poly(ethylene terephthalate).
Claim 12
Dependent Claim
35 words
The layer of claim 2 wherein said emulsion comprises an acrylate selected from the group consisting of polyethyl acrylate, polybutyl acrylate, or polybutyl methacrylate, in a weight-to-weight ratio to gelatin of from 1:5 to 1.5:1.
Claim 13
Dependent Claim
35 words
The layer of claim 10 wherein said emulsion comprises an acrylate selected from the group consisting of polyethyl acrylate, polybutyl acrylate, or polybutyl methacrylate, in a weight-to-weight ratio to gelatin of from 1:5 to 1.5:1.
Claim 14
Dependent Claim
12 words
The layer of claim 11 wherein said emulsion contains photographic silver halide.
Claim 15
Dependent Claim
12 words
The layer of claim 12 wherein said emulsion contains photographic silver halide.
Claim 16
Dependent Claim
12 words
The layer of claim 2 wherein said emulsion contains antihalation dye therein.
Claim 17
Dependent Claim
12 words
The layer of claim 11 wherein said emulsion contains antihalation dye therein.
Claim 18
Dependent Claim
12 words
The layer of claim 12 wherein said emulsion contains antihalation dye therein.
Claim 19
Dependent Claim
17 words
The layer of claim 2 wherein said coating has a layer adhered thereto comprising an antihalation dye.
Claim 20
Dependent Claim
28 words
The support layer of claim 1 wherein said surface is produced by treating poly(ethylene terephthalate) in a flame where the air:fuel ratio is less than 1.0 the stochiometric.
Claim 21
Dependent Claim
42 words
The support layer of claim 1 wherein said surface is produced by treating poly(ethylene terephthalate) in an atmosphere of fluorine diluted with nitrogen where the fluorine concentration is from 0.2 to 20 percent and the treatment time is less than 10 seconds.
Claim 22
Dependent Claim
75 words
A support layer comprising a polymeric poly(ethyleneterephthalate) film having a coating adhered to at least one surface of said film, said at least one surface having: a) an oxygen content higher than that of the composition of the film, b) an acidity greater than that of the composition of the film, and c) Hydrophilicity which is greater than that of the composition of the film, and said coating comprising a mixture of polybutylacrylate and gelatin.
Claim 23
Dependent Claim
75 words
A support layer comprising a polymeric poly(ethyleneterephthalate) film having a coating adhered to at least one surface of said film, said at least one surface having: a) an oxygen content higher than that of the composition of the film, b) an acidity greater than that of the composition of the film, and c) Hydrophilicity which is greater than that of the composition of the film, and said coating comprising a mixture of polybutylacrylate and gelatin.
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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) | 1996-09-13 | 1997-03-15 | 1997-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-13 | 2001-03-15 | 2001-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-13 | 2005-03-15 | 2005-09-14 | $7700.00 | Window Closed / Lapsed |