US5955239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strippable biaxially oriented base for imaging element
Assignee: Eastman Kodak Co
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Filing: 1997-12-24
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Granted: 1999-09-21
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Expires: 2017-12-24
Abstract
Abstract The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, a layer of biaxially oriented polyolefin sheet between said paper base and said silver halide layer, wherein there is located between said biaxially oriented polyolefin sheet and said base paper a layer of strippable material comprising a material that has a peel strength of between about 30 and 150 g/5 cm.
Inventors
- 👤 Douglas N. Haydock
- 👤 Thaddeus S. Gula
- 👤 Peter T. Aylward
- 👤 Robert P. Bourdelais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:59
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/805; G03C1/775; G03C1/79
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
65 words
A photographic element comprising a paper base, at least one photosensitive silver halide layer, a layer of biaxially oriented polyolefin sheet between said paper base and said silver halide layer, wherein there is located between said biaxially oriented polyolefin sheet and said base paper a layer of strippable material comprising a material that has a peel strength of between about 30 and 150 g/5 cm.
Claim 2
Dependent Claim
65 words
A photographic element comprising a paper base, at least one photosensitive silver halide layer, a layer of biaxially oriented polyolefin sheet between said paper base and said silver halide layer, wherein there is located between said biaxially oriented polyolefin sheet and said base paper a layer of strippable material comprising a material that has a peel strength of between about 30 and 150 g/5 cm.
Claim 3
Dependent Claim
34 words
The photographic element of claim 1 wherein said stripable material comprises at least one material selected from the group consisting of polypropylene, polyethylene, polymethylpentene, polystyrene, polybutylene, copolymers of propylene and ethylene and mixtures thereof.
Claim 4
Dependent Claim
14 words
The photographic element of claim 1 wherein said strippable material is polyethylene strippable material.
Claim 5
Dependent Claim
17 words
The photographic element of claim 1 wherein said polyethylene strippable material has a density greater than 0.920.
Claim 6
Dependent Claim
21 words
The photographic element of claim 1 wherein the bond between the biaxially oriented sheet and the strippable layer separates during stripping.
Claim 7
Dependent Claim
29 words
The photographic element of claim 1 wherein the surface of the biaxially oriented film adjacent to the strippable layer has limited adherence to the material of the strippable layer.
Claim 8
Dependent Claim
22 words
The photographic element of claim 1 wherein said biaxially oriented film has a Young's modulus between about 700 MPa to 5500 MPa.
Claim 9
Dependent Claim
38 words
The photographic element of claim 1 wherein said strippable material contains at least one pigment selected from the group consisting of talc, kaolin, calcium carbonate, BaSO 4 , ZnO, TiO 2 , ZnS, MgCO 3 , and carbon.
Claim 10
Dependent Claim
13 words
The photographic element of claim 1 wherein said strippable material contains titanium dioxide.
Claim 11
Independent Claim
92 words
A method of stripping a photographic image comprising providing a photographic element comprising a paper base, at least one photosensitive silver halide layer, a layer of biaxially oriented polyolefin sheet between said paper base and said silver halide layer, wherein there is located between said biaxially oriented polyolefin sheet and said base paper a layer of strippable material comprising a material that has a peel strength of between about 30 and 150 g/5 cm, exposing said element, developing said element and stripping the image and said polyolefin sheet from said base paper.
Claim 12
Independent Claim
92 words
A method of stripping a photographic image comprising providing a photographic element comprising a paper base, at least one photosensitive silver halide layer, a layer of biaxially oriented polyolefin sheet between said paper base and said silver halide layer, wherein there is located between said biaxially oriented polyolefin sheet and said base paper a layer of strippable material comprising a material that has a peel strength of between about 30 and 150 g/5 cm, exposing said element, developing said element and stripping the image and said polyolefin sheet from said base paper.
Claim 13
Dependent Claim
63 words
An imaging element comprising a support base, at least one image receiving layer, a layer of biaxially oriented polyolefin sheet between said base and said image receiving layer, wherein there is located between said biaxially oriented polyolefin sheet and said support base a layer of strippable material comprising a material that has a peel strength of between about 30 and 150 g/5 cm.
Claim 14
Dependent Claim
63 words
An imaging element comprising a support base, at least one image receiving layer, a layer of biaxially oriented polyolefin sheet between said base and said image receiving layer, wherein there is located between said biaxially oriented polyolefin sheet and said support base a layer of strippable material comprising a material that has a peel strength of between about 30 and 150 g/5 cm.
Claim 15
Dependent Claim
34 words
An imaging element of claim 11 wherein said stripable material comprises at least one material selected from the group consisting of polypropylene, polyethylene, polymethylpentene, polystyrene, polybutylene, copolymers of propylene and ethylene and mixtures thereof.
Claim 16
Dependent Claim
14 words
An imaging element of claim 11 wherein said strippable material is polyethylene strippable material.
Claim 17
Dependent Claim
21 words
An imaging element of claim 11 wherein the bond between the biaxially oriented sheet and the strippable layer separates during stripping.
Claim 18
Dependent Claim
29 words
The photographic element of claim 11 wherein the surface of the biaxially oriented film adjacent to the strippable layer has limited adherence to the material of the strippable layer.
Claim 19
Dependent Claim
19 words
The photographic element of claim 1 further comprising a biaxially oriented sheet on the bottom of said photographic element.
Claim 20
Dependent Claim
14 words
The photographic element of claim 16 wherein said paper is a cellulose fiber paper.
Claim 21
Dependent Claim
14 words
The photographic element of claim 17 wherein the bottom biaxially oriented sheet comprises polyolefin.
Claim 22
Dependent Claim
19 words
The imaging element of claim 11 further comprising a biaxially oriented sheet on the bottom of said photographic element.
Claim 23
Dependent Claim
14 words
The imaging element of claim 19 wherein said paper is a cellulose fiber paper.
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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) | 2002-09-20 | 2003-03-22 | 2003-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-20 | 2007-03-22 | 2007-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-20 | 2011-03-22 | 2011-09-21 | $7700.00 | Window Closed / Lapsed |