US6020116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective display material with biaxially oriented polyolefin sheet
Assignee: Eastman Kodak Co
•
Filing: 1998-09-17
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Granted: 2000-02-01
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Expires: 2018-09-17
Abstract
Abstract The invention relates to a photographic element comprising a transparent polymer base, at least one layer of biaxially oriented polyolefin sheet and at least one image layer wherein said polymer base has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of less than 15%.
Inventors
- 👤 Alphonse D. Camp
- 👤 Robert P. Bourdelais
- 👤 Peter T. Aylward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:27
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/95; G03C1/795; Y; Y10; Y10S; Y10S430/00; Y10S430/14; Y10S430/151
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
50 words
A photographic element comprising a transparent polymer base, at least one layer of biaxially oriented polyolefin sheet and at least one image layer wherein said polymer base has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of less than 15%.
Claim 2
Dependent Claim
50 words
A photographic element comprising a transparent polymer base, at least one layer of biaxially oriented polyolefin sheet and at least one image layer wherein said polymer base has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of less than 15%.
Claim 3
Dependent Claim
19 words
The photographic element of claim 1 wherein said biaxially oriented polyolefin sheet is substantially opaque and 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
22 words
The photographic element of claim 1 wherein said biaxially oriented polyolefin sheet comprises between 18 and 24 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
17 words
The photographic element of claim 1 wherein said element has a reflection density of at least 85%.
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
15 words
The photographic element of claim 1 wherein said biaxially oriented polyolefin sheet contains optical brightener.
Claim 12
Dependent Claim
18 words
The photographic element of claim 1 wherein said element has a stiffness of between 60 and 500 millinewtons.
Claim 13
Dependent Claim
17 words
The element of claim 1 wherein said polymer base has a thickness between 100 and 180 μm.
Claim 14
Dependent Claim
72 words
A photographic element comprising at least one photosensitive silver halide imaging layer and a base for said at least one imaging layer wherein said base comprises a transparent polymer base, at least one layer of biaxially oriented polyolefin sheet and at least one image layer wherein said polymer base has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of less than 15%.
Claim 15
Dependent Claim
72 words
A photographic element comprising at least one photosensitive silver halide imaging layer and a base for said at least one imaging layer wherein said base comprises a transparent polymer base, at least one layer of biaxially oriented polyolefin sheet and at least one image layer wherein said polymer base has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of less than 15%.
Claim 16
Dependent Claim
19 words
The photographic element of claim 13 wherein said biaxially oriented polyolefin sheet is substantially opaque and contains white pigment.
Claim 17
Dependent Claim
24 words
The photographic element of claim 13 wherein said biaxially oriented polyolefin sheet has an integral layer of polyethylene on the top of said sheet.
Claim 18
Dependent Claim
17 words
The photographic element of claim 13 wherein said element has a reflection density of at least 85%.
Claim 19
Dependent Claim
15 words
The photographic element of claim 13 wherein said biaxially oriented polyolefin sheet contains optical brightener.
Claim 20
Dependent Claim
18 words
The photographic element of claim 13 wherein said element has a stiffness of between 60 and 500 millinewtons.
Claim 21
Dependent Claim
17 words
The element of claim 13 wherein said polymer base has a thickness between 100 and 180 μm.
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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) | 2003-01-31 | 2003-08-02 | 2004-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-31 | 2007-08-02 | 2008-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-31 | 2011-08-02 | 2012-02-01 | $7700.00 | Window Closed / Lapsed |