US6017685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission duplitized display materials with biaxially oriented polyolefin sheets
Assignee: Eastman Kodak Co
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Filing: 1998-09-17
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Granted: 2000-01-25
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Expires: 2018-09-17
Abstract
Abstract The invention relates to a photographic element comprising a transparent polymer sheet, a biaxially oriented polyolefin sheet laminated to said transparent polymer sheet, one image layer coated on the top of said biaxially oriented polyolefin sheet and one image layer coated on the bottom of said transparent polymer sheet wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of at least 40% and a reflection density less than 60%.
Inventors
- 👤 Robert P. Bourdelais
- 👤 Alphonse D. Camp
- 👤 Peter T. Aylward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:56
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/795; G03C7/00; G03C7/30; G03C7/3029; G03C1/95; Y; Y10; Y10S; Y10S430/00; Y10S430/14; Y10S430/151
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
79 words
A photographic element comprising a transparent polymer sheet, a biaxially oriented polyolefin sheet laminated to said transparent polymer sheet, one image layer coated on the top of said biaxially oriented polyolefin sheet and one image layer coated on the bottom of said transparent polymer sheet wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of at least 40% and a reflection density less than 60%.
Claim 2
Dependent Claim
79 words
A photographic element comprising a transparent polymer sheet, a biaxially oriented polyolefin sheet laminated to said transparent polymer sheet, one image layer coated on the top of said biaxially oriented polyolefin sheet and one image layer coated on the bottom of said transparent polymer sheet wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of at least 40% and a reflection density less than 60%.
Claim 3
Dependent Claim
22 words
The photographic element of claim 1 wherein said reflection density of said biaxially oriented polyolefin sheet is between 46 and about 54%.
Claim 4
Dependent Claim
15 words
The photographic element of claim 1 wherein said biaxially oriented polyolefin sheet further comprises microvoids.
Claim 5
Dependent Claim
40 words
The photographic element of claim 3 wherein said microvoids comprise at least one layer of said biaxially oriented polyolefin sheet and have at least 6 voids in the vertical direction at substantially every point of the biaxially oriented polyolefin sheet.
Claim 6
Dependent Claim
24 words
The photographic element of claim 1 wherein said biaxially oriented polyolefin sheet has an integral layer of polyethylene on the top of said sheet.
Claim 7
Dependent Claim
15 words
The photographic element of claim 1 wherein said spectral transmission is between 40 and 60%.
Claim 8
Dependent Claim
15 words
The photographic element of claim 6 wherein said spectral transmission is between 46 and 54%.
Claim 9
Dependent Claim
22 words
The photographic element of claim 4 wherein said biaxially oriented polyolefin sheet comprises between 6 and 30 voids in the vertical direction.
Claim 10
Dependent Claim
16 words
The photographic element of claim 1 wherein said transparent polymer sheet is substantially free of pigment.
Claim 11
Dependent Claim
36 words
The photographic element of claim 1 wherein said image layer comprises at least one imaging layer containing silver halide and a dye forming coupler located on the top side and bottom side of said imaging element.
Claim 12
Dependent Claim
22 words
The photographic element of claim 1 wherein said biaxially oriented polyolefin sheet comprises between 4 and 12 weight percent of titanium dioxide.
Claim 13
Dependent Claim
49 words
The photographic element of claim 10 wherein said at least one dye forming layer on the opposite side of said transparent polymer sheet from the biaxially oriented polyolefin sheet has substantially less dye forming coupler than the imaging layer on the same side as the biaxially oriented polyolefin sheet.
Claim 14
Dependent Claim
41 words
The photographic element of claim 10 wherein the at least one dye forming layer on the opposite side comprises about the same amount of dye forming coupler as the imaging layer on the same side as the biaxially oriented polyolefin sheet.
Claim 15
Independent Claim
113 words
A method of imaging comprising providing an photographic element comprising a transparent polymer sheet, a biaxially oriented polyolefin sheet laminated to said transparent polymer sheet, and at least one imaging layer comprising silver halide and a dye forming coupler coated on the top of said biaxially oriented polyolefin sheet and at least one imaging layer comprising silver halide and dye forming coupler coated on the bottom of said transparent polymer sheet, wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of at least 40% and a reflection density less than 60%, exposing said image layer, and developing an image.
Claim 16
Independent Claim
113 words
A method of imaging comprising providing an photographic element comprising a transparent polymer sheet, a biaxially oriented polyolefin sheet laminated to said transparent polymer sheet, and at least one imaging layer comprising silver halide and a dye forming coupler coated on the top of said biaxially oriented polyolefin sheet and at least one imaging layer comprising silver halide and dye forming coupler coated on the bottom of said transparent polymer sheet, wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of at least 40% and a reflection density less than 60%, exposing said image layer, and developing an image.
Claim 17
Dependent Claim
18 words
The method of claim 14 wherein said exposing is by means of a collimated beam of visible energy.
Claim 18
Dependent Claim
13 words
The method of claim 14 wherein said collimated beam comprises a laser beam.
Claim 19
Dependent Claim
16 words
The method of claim 14 wherein said developing is carried out in less than 50 seconds.
References Cited (Backward Citations)
US3944699A
Cited
US4187113A
Cited
US4283486A
Cited
US4632869A
Cited
US4977070A
Cited
US4758462A
Cited
US4900654A
Cited
US4912333A
Cited
US5100862A
Cited
US5055371A
Cited
US5244861A
Cited
US5212053A
Cited
US5387501A
Cited
WO1994004961A1
Cited
US5389422A
Cited
US5466519A
Cited
EP0622633A2
Cited
US5866282A
Cited
US5888643A
Cited
US5888681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-01-24 | 2003-07-26 | 2004-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-24 | 2007-07-26 | 2008-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-24 | 2011-07-26 | 2012-01-25 | $7700.00 | Window Closed / Lapsed |