Patent US5576159A successfully refreshed from Google Patents.
US5576159A
Expired / Lapsed
US
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Photographic element with color enhancing layer adjacent to an emulsion layer and an oxidized developer scavenger layer
Assignee: Eastman Kodak Co
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Filing: 1995-02-17
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Granted: 1996-11-19
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Expires: 2015-02-17
Abstract
Abstract The invention relates to a photographic element comprising at least one emulsion layer comprising coupler and silver halide grains, adjacent to said at least one emulsion layer a color enhancer layer comprising the same coupler as in said at least one coupler layer and adjacent to said color enhancer layer a Dox scavenging layer.
Inventors
- 👤 Erika M. Sato
- 👤 Paul T. Hahm
- 👤 Walter H. Isaac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:26
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3029
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
64 words
A photographic element comprising at least one emulsion layer wherein said at least one emulsion layer comprises non-diffusible coupler and silver halide grains, adjacent to said at least one emulsion layer a color enhancer layer comprising a non-diffusible coupler, and adjacent to said color enhancer layer an oxidized developer scavenging layer, with the proviso that said color enhancer layer does not contain silver halide.
Claim 2
Dependent Claim
64 words
A photographic element comprising at least one emulsion layer wherein said at least one emulsion layer comprises non-diffusible coupler and silver halide grains, adjacent to said at least one emulsion layer a color enhancer layer comprising a non-diffusible coupler, and adjacent to said color enhancer layer an oxidized developer scavenging layer, with the proviso that said color enhancer layer does not contain silver halide.
Claim 3
Dependent Claim
23 words
The element of claim 1 wherein the said at least one emulsion layer comprises blue sensitive silver halide and yellow dye forming coupler.
Claim 4
Dependent Claim
19 words
The element of claim 1 wherein said oxidized developer scavenger layer comprises 2,5-dioctylhydroquinone and 1,4-benzenedipentanoic acid, 2,5-dihydroxy-Δ,Δ,Δ',Δ'-tetramethyl-, dihexyl ester.
Claim 5
Dependent Claim
36 words
The element of claim 1 wherein of the total of the coupler in said at least one emulsion layer and in said adjacent enhancer between about 5 and 95 weight percent is in the enhancer layer.
Claim 6
Dependent Claim
22 words
The element of claim 4 wherein between about 15 and about 85 weight percent of said coupler is in the enhancer layer.
Claim 7
Dependent Claim
22 words
The element of claim 4 wherein between about 25 and about 75 weight percent of said coupler is in the enhancer layer.
Claim 8
Dependent Claim
13 words
The element of claim 1 wherein said non-diffusable couplers are the same coupler.
Claim 9
Dependent Claim
20 words
The element of claim 1 wherein said silver halide grains high chloride grains of between about 0.5 and 2.5 microns.
Claim 10
Dependent Claim
14 words
The element of claim 1 wherein said couplers form dye of the same color.
Claim 11
Dependent Claim
19 words
The element of claim 9 wherein said grains are between about 0.7 and 1.5 microns and are blue sensitized.
Claim 12
Dependent Claim
35 words
The element of claim 1 wherein the number of silver centers in said silver halide grains of said at least one emulsion layer is between about 0.5×10 6 to 50×10 6 grains per square meter.
Claim 13
Dependent Claim
35 words
The element of claim 1 wherein the number of silver centers in said silver halide grains of said at least one emulsion layer is between about 1×10 6 to 40×10 6 grains per square meter.
Claim 14
Dependent Claim
35 words
The element of claim 1 wherein the number of silver centers in said silver halide grains of said at least one emulsion layer is between about 5×10 6 to 25×10 6 grains per square meter.
Claim 15
Dependent Claim
72 words
A photographic element comprising at least one layer wherein said at least one layer comprises a blue sensitive emulsion and yellow dye forming coupler, adjacent to said at least one layer comprising said blue sensitive emulsion is at least one yellow enhancer layer comprising a yellow coupler, and adjacent to said yellow enhancer layer an oxidized developer scavenging layer, with the proviso that said color enhancer layer does not contain silver halide.
Claim 16
Dependent Claim
72 words
A photographic element comprising at least one layer wherein said at least one layer comprises a blue sensitive emulsion and yellow dye forming coupler, adjacent to said at least one layer comprising said blue sensitive emulsion is at least one yellow enhancer layer comprising a yellow coupler, and adjacent to said yellow enhancer layer an oxidized developer scavenging layer, with the proviso that said color enhancer layer does not contain silver halide.
Claim 17
Dependent Claim
28 words
A photographic element as in claim 14 wherein said yellow enhancer layer contains between about 15 and 85 percent of the total yellow coupler in said photographic element.
Claim 18
Dependent Claim
28 words
A photographic element as in claim 14 wherein said blue sensitive emulsion comprises silver halide grains that have an average grain size of about 0.7 to 1.5 micron.
Claim 19
Dependent Claim
14 words
The photographic element of claim 14 wherein said element further comprises a reflective support.
Claim 20
Dependent Claim
20 words
The photographic element of claim 16 wherein said emulsion comprises silver halide emulsion which is at least 90 percent chloride.
Claim 21
Dependent Claim
30 words
The photographic element of claim 14 wherein said oxidized developer scavenging layer comprises at least one material selected from the group consisting of 2,5-dioctylhydroquinone, 1,4-benzenedipentanoic acid, and 2,5-dihydroxy-Δ,Δ,Δ',Δ'-tetramethyl-, dihexyl ester.
Claim 22
Dependent Claim
27 words
The element of claim 14 wherein said enhancer layer contains between about 25 and about 75 percent of the total yellow dye forming coupler in said element.
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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) | 1999-11-19 | 2000-05-20 | 2000-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-19 | 2004-05-20 | 2004-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-19 | 2008-05-20 | 2008-11-19 | $7700.00 | Window Closed / Lapsed |