US6030759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite photographic material with laminated biaxially oriented polyolefin sheets with improved optical performance
Assignee: Eastman Kodak Co
•
Filing: 1997-12-24
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Granted: 2000-02-29
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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 microvoided polymer sheet between said paper base and said silver halide layer, and one or more other non-voided layers between said silver halide layer and said microvoided layer, and one or more other non-voided layers between said mirovoided layer and said paper base. The voided or non-voided layers have levels of TiO2 and colorants adjusted to provide optimum optical properties for control of MTF, LSTAR, and OPACITY.
Inventors
- 👤 Thaddeus S. Gula
- 👤 Peter T. Aylward
- 👤 Robert P. Bourdelais
- 👤 Douglas N. Haydock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:35
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79; G03C1/81
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
80 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 said biaxially oriented polyolefin sheet comprises an upper layer that comprises between 4 and 24% of a white pigment; and adjacent said upper layer a core layer that is microvoided; and adjacent and back of said core layer a layer of polyolefin that is substantially colorant and pigment free.
Claim 2
Dependent Claim
80 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 said biaxially oriented polyolefin sheet comprises an upper layer that comprises between 4 and 24% of a white pigment; and adjacent said upper layer a core layer that is microvoided; and adjacent and back of said core layer a layer of polyolefin that is substantially colorant and pigment free.
Claim 3
Dependent Claim
18 words
The photographic element of claim 1 wherein said core layer comprises between 2 and 18% of white pigment.
Claim 4
Dependent Claim
24 words
The photographic element of claim 1 wherein the upper surface of said biaxially oriented sheet comprises a skin layer that is substantially pigment free.
Claim 5
Dependent Claim
28 words
The photographic element of claim 1 wherein said biaxially oriented sheet further comprises on the lower side of said substantially colorant free layer a layer comprising white pigment.
Claim 6
Dependent Claim
24 words
The photographic element of claim 1 wherein on the lower side of said biaxially oriented sheet there is a binder layer comprising white pigment.
Claim 7
Dependent Claim
13 words
The photographic element of claim 1 wherein said white pigment comprises titanium dioxide.
Claim 8
Dependent Claim
19 words
The photographic element of claim 1 wherein said upper layer is between about 1 to 15 μm in thickness.
Claim 9
Dependent Claim
20 words
The photographic element of claim 1 wherein said microvoided core layer is between about 10 and 60 μm in thickness.
Claim 10
Dependent Claim
25 words
The photographic element of claim 1 wherein the substantially colorant free layer adjacent said microvoided layer is between about 2 and 15 μm in thickness.
Claim 11
Dependent Claim
20 words
The photographic element of claim 1 wherein said upper layer comprises between 15 and 20 weight percent of white pigment.
Claim 12
Dependent Claim
21 words
The photographic element of claim 1 wherein said microvoided layer comprises between about 2 and 8 weight percent of white pigment.
Claim 13
Dependent Claim
12 words
The photographic element of claim 1 wherein said paper comprises cellulose fibers.
Claim 14
Dependent Claim
25 words
The photographic element of claim 12 further comprising a biaxially oriented polymer sheet on the bottom side of said element in back of said paper.
Claim 15
Dependent Claim
20 words
The photographic element of claim 13 wherein said biaxially oriented polyolefin sheet comprises an upper surface layer comprising blue colorant.
Claim 16
Dependent Claim
14 words
The photographic element of claim 13 wherein said biaxially oriented polyolefin sheet comprises polypropylene.
Claim 17
Dependent Claim
20 words
The photographic element of claim 13 wherein said biaxially oriented sheet on the bottom side of said element comprises polypropylene.
Claim 18
Dependent Claim
32 words
The photographic element of claim 13 wherein said at least one photosensitive silver halide layer comprises a cyan dye image-forming unit, a magenta dye image-forming unit, and a yellow dye image-forming unit.
Claim 19
Dependent Claim
17 words
The photographic layer of claim 1 wherein said core layer that is microvoided further comprises white pigment.
Claim 20
Dependent Claim
18 words
The photographic element of claim 14 wherein said core layer comprises between 2 and 18% of white pigment.
Claim 21
Dependent Claim
20 words
The photographic element of claim 13 wherein said microvoided core layer is between about 10 and 60 μm in thickness.
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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 |