US6030756A
Expired / Lapsed
US
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Day/night photographic display material with biaxially oriented polyolefin sheet
Assignee: Eastman Kodak Co
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Filing: 1998-09-17
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Granted: 2000-02-29
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Expires: 2018-09-17
Abstract
Abstract The invention relates to an photographic element comprising a transparent polymer sheet, at least one layer of biaxially oriented polyolefin sheet and at least one image layer, wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons said biaxially oriented polyolefin sheet has a spectral transmission between 35% and 90%, said biaxially oriented polyolefin sheet has a reflection density less than 65%.
Inventors
- 👤 Robert P. Bourdelais
- 👤 Peter T. Aylward
- 👤 Alphonse D. Camp
- 👤 Michael R. Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:02
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/36; B32B27/06; B32B27/08; B32B27/32; G; G03; G03C; G03C1/00; G03C1/76; G03C1/795; Y; Y10; Y10S; Y10S430/00; Y10S430/14; Y10S430/151
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
61 words
An photographic element comprising a transparent polymer sheet, at least one layer of biaxially oriented polyolefin sheet and at least one image layer, wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons said biaxially oriented polyolefin sheet has a spectral transmission between 35% and 90%, said biaxially oriented polyolefin sheet has a reflection density less than 65%.
Claim 2
Dependent Claim
61 words
An photographic element comprising a transparent polymer sheet, at least one layer of biaxially oriented polyolefin sheet and at least one image layer, wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons said biaxially oriented polyolefin sheet has a spectral transmission between 35% and 90%, said biaxially oriented polyolefin sheet has a reflection density less than 65%.
Claim 3
Dependent Claim
15 words
The photographic element of claim 1 wherein said biaxially oriented polyolefin sheet contains white pigment.
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
21 words
The photographic element of claim 1 wherein said biaxially oriented sheet comprises between 3 and 18 weight percent of titanium dioxide.
Claim 8
Dependent Claim
24 words
The photographic element of claim 6 wherein said titanium dioxide is in a layer above a microvoided layer of said biaxially oriented polyolefin sheet.
Claim 9
Dependent Claim
18 words
The photographic element of claim 1 wherein said element has a reflection density of between 58 and 62%.
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 at least one image layer comprises it least one imaging layer containing silver halide and a dye forming coupler located on the top side of said imaging element.
Claim 12
Dependent Claim
35 words
The photographic element of claim 10 wherein said at least one image layer comprises at least one dye forming layer on the opposite side of said transparent polymer sheet from the biaxially oriented polyolefin sheet.
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 12 wherein the at least one dye forming layer on the opposite side comprises about the same amount of dye forming coupler of the imaging layer on the same side as the biaxially oriented polyolefin sheet.
Claim 15
Independent Claim
84 words
A method of imaging comprising providing an photographic element comprising a transparent polymer sheet, at least one layer of biaxially oriented polyolefin sheet and at least one image layer comprising silver halide and a dye forming coupler, wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission between 35% and 90%, said biaxially oriented polyolefin sheet has a reflection density less than 65%, exposing said image layer, and developing an image.
Claim 16
Independent Claim
84 words
A method of imaging comprising providing an photographic element comprising a transparent polymer sheet, at least one layer of biaxially oriented polyolefin sheet and at least one image layer comprising silver halide and a dye forming coupler, wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission between 35% and 90%, said biaxially oriented polyolefin sheet has a reflection density less than 65%, exposing said image layer, and developing an image.
Claim 17
Dependent Claim
60 words
The method of claim 14 wherein said photographic element comprises at least one dye forming layer comprising silver halide and dye forming coupler on the opposite side of said transparent polymer sheet from the biaxially oriented polyolefin sheet and said exposure of both coupler containing layers is from the side of said imaging element having the biaxially oriented polyolefin sheet.
Claim 18
Dependent Claim
18 words
The method of claim 14 wherein said exposing is by means of a collimated beam of visible energy.
Claim 19
Dependent Claim
13 words
The method of claim 16 wherein said collimated beam comprises a laser beam.
Claim 20
Dependent Claim
16 words
The method of claim 16 wherein said developing is carried out in less than 50 seconds.
Claim 21
Dependent Claim
77 words
A photographic element comprising at least one silver halide imaging layer and a base for said at least one imaging layer wherein said base comprises a transparent polymer sheet and at least one layer of biaxially oriented polyolefin sheet, wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, said biaxially oriented polyolefin sheet has a spectral transmission between 35% and 90%, said biaxially oriented polyolefin sheet has a reflection density less than 65%.
Claim 22
Dependent Claim
77 words
A photographic element comprising at least one silver halide imaging layer and a base for said at least one imaging layer wherein said base comprises a transparent polymer sheet and at least one layer of biaxially oriented polyolefin sheet, wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, said biaxially oriented polyolefin sheet has a spectral transmission between 35% and 90%, said biaxially oriented polyolefin sheet has a reflection density less than 65%.
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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) | 2003-02-28 | 2003-08-30 | 2004-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-28 | 2007-08-30 | 2008-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-28 | 2011-08-30 | 2012-02-29 | $7700.00 | Window Closed / Lapsed |