US5234804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic paper support with silver halide emulsion layer
Assignee: Eastman Kodak Co
•
Filing: 1992-09-04
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Granted: 1993-08-10
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Expires: 2012-09-04
Abstract
Abstract A photographic element comprising a paper substrate said paper substrate comprises wood fiber and polyvinyl alcohol polymer located in heavier concentration near the surface of said paper with a polyolefin coating provided on at least one surface, a hydrophilic colloid layer on the polyolefin coating and a light sensitive silver halide emulsion on the hydrophilic colloid layer, said hydrophilic colloid layer comprising from about 20 to 80 percent by weight of a white pigment, and from about 15 to 35 percent by weight of hollow microspheres having a diameter of from about 0.1 to about 1 μm.
Inventors
- 👤 Erika M. Sato
- 👤 James L. Edwards
- 👤 Larry D. Hagemeier
- 👤 David J. Lacz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:56
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/36; D21H17/35; G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
102 words
A photographic element comprising a paper substrate said paper substrate comprises wood fiber and polyvinyl alcohol polymer wherein said polyvinyl alcohol is located in heavier concentration near the surface of said paper with a polyolefin coating provided on at least one surface, a hydrophilic colloid layer on the polyolefin coating and a light sensitive silver halide emulsion on the hydrophilic colloid layer, said hydrophilic colloid layer comprising from about 20 to 80 percent by weight of a white pigment, and from about 15 to 35 percent by weight of hollow microspheres having a diameter of from about 0.1 to about 1 μm.
Claim 2
Dependent Claim
102 words
A photographic element comprising a paper substrate said paper substrate comprises wood fiber and polyvinyl alcohol polymer wherein said polyvinyl alcohol is located in heavier concentration near the surface of said paper with a polyolefin coating provided on at least one surface, a hydrophilic colloid layer on the polyolefin coating and a light sensitive silver halide emulsion on the hydrophilic colloid layer, said hydrophilic colloid layer comprising from about 20 to 80 percent by weight of a white pigment, and from about 15 to 35 percent by weight of hollow microspheres having a diameter of from about 0.1 to about 1 μm.
Claim 3
Dependent Claim
15 words
The photographic element of claim 1 wherein the hydrophilic colloid layer contains an optical brightener.
Claim 4
Dependent Claim
14 words
The photographic element of claim 1 wherein the white pigment is TiO 2 .
Claim 5
Dependent Claim
15 words
The photographic element of claim 1 wherein the white pigment is anatase TiO 2 .
Claim 6
Dependent Claim
15 words
The photographic element of claim 1 wherein the white pigment is rutile TiO 2 .
Claim 7
Dependent Claim
25 words
The photographic element of claim 1 wherein the hydrophilic colloid is present in the amount of from about 5 to about 50 percent by weight.
Claim 8
Dependent Claim
25 words
The photographic element of claim 1 wherein the hydrophilic colloid is present in the amount of from about 8 to about 35 percent by weight.
Claim 9
Dependent Claim
25 words
The photographic element of claim 1 wherein the hydrophilic colloid is present in the amount of from about 10 to about 25 percent by weight.
Claim 10
Dependent Claim
26 words
The photographic element of claim 1 wherein the curl of said element is less than about 5 as measured by the ANSI 7-day Disk Curl Test.
Claim 11
Dependent Claim
16 words
The photographic element of claim 2 wherein the optical brightener is loaded on a latex polymer.
Claim 12
Dependent Claim
24 words
The photographic element of claim 1 wherein the hydrophilic colloid layer is coated at a coverage of at least about 5.4 g/m 2 .
Claim 13
Dependent Claim
27 words
The photographic element of claim 1 wherein the hydrophilic colloid layer is coated at a coverage from about 5.4 g/m 2 to about 16.2 g/m 2 .
Claim 14
Dependent Claim
27 words
The photographic element of claim 1 wherein the hydrophilic colloid layer is coated at a coverage from about 7.5 g/m 2 to about 10.9 g/m 2 .
Claim 15
Dependent Claim
20 words
The element of claim 1 wherein said paper comprises between about 4 and about 6 percent by weight polyvinyl alcohol.
Claim 16
Dependent Claim
29 words
The element of claim 1 wherein the wood fiber comprising said paper comprises 50 to 100 percent by weight hardwood and 0 to about 50 percent by weight softwood.
Claim 17
Dependent Claim
21 words
The element of claim 1 wherein said paper has an O 2 leak rate of less than 25 cc/m 2 /day.
Claim 18
Dependent Claim
20 words
The element of claim 1 wherein said paper has an O 2 GTR of less than 1 cc/m 2 /day.
Claim 19
Dependent Claim
23 words
The element of claim 1 wherein said paper has a basis weight of between about 25 and about 50 lbs. per 1000 sq/ft.
Claim 20
Dependent Claim
22 words
The element of claim 1 wherein said photosensitive material comprises of at least one coupler selected from the group consisting of ##STR5##
Claim 21
Dependent Claim
16 words
The imaging member of claim 1 wherein said photosensitive member comprises an ultraviolet absorber comprising ##STR6##
Claim 22
Dependent Claim
18 words
The element of claim 1 wherein said photosensitive membrane contains an ultraviolet absorber of the substituted phenylbenzotriazole class.
Claim 23
Dependent Claim
19 words
The element of claim 1 wherein said photosensitive material contains at least one yellow or magenta image forming coupler.
Claim 24
Dependent Claim
16 words
The element of claim 1 wherein said photosensitive material comprises magenta, yellow, and cyan image couplers.
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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) | 1996-08-09 | 1997-02-08 | 1997-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-09 | 2001-02-08 | 2001-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-09 | 2005-02-08 | 2005-08-10 | $7700.00 | Window Closed / Lapsed |