EP0304297A2
Expired / Lapsed
EP
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Color photographic element
Assignee: Eastman Kodak Co
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Filing: 1988-08-18
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Granted: —
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Expires: 2008-08-18
Abstract
Abstract A color photographic element comprising a support and first and second silver halide emulsion layers sensitized to first and second regions of the electromagnetic spectrum respectively and each containing a dye forming coupler, wherein the second emulsion layer is to a limited extent also sensitized to the first region of the spectrum. The element exhibits extended exposure latitude.
Inventors
- 👤 Paul Timothy C/O Eastman Kodak Company Hahm
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 03:10
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3041; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C7/3003; G03C2007/3015; G03C2200/00; G03C2200/20; G03C7/3029
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
52 words
A color photographic element comprising a support and first and second silver halide emulsion layers sensitized to first and second regions of the electromagnetic spectrum respectively and each containing a dye forming coupler, wherein the second emulsion layer is to a limited extent also sensitized to the first region of the spectrum.
Claim 2
Dependent Claim
52 words
A color photographic element comprising a support and first and second silver halide emulsion layers sensitized to first and second regions of the electromagnetic spectrum respectively and each containing a dye forming coupler, wherein the second emulsion layer is to a limited extent also sensitized to the first region of the spectrum.
Claim 3
Dependent Claim
52 words
The photographic element of claim l wherein the second emulsion layer contains sensitizing dye for the first region of the spectrum in an amount that is up to 30% by weight of the amount of sensitizing dye for the first region of the spectrum that is contained in the first emulsion layer.
Claim 4
Dependent Claim
56 words
The photographic element of claim l or 2, wherein the first emulsion layer contains a cyan dye forming coupler and a sensitizing dye for the red region of the spectrum and the second emulsion layer contains a magenta dye forming coupler and a sensitizing dye for each of the green and red regions of the spectrum.
Claim 5
Dependent Claim
56 words
The photographic element of claim l or 2, wherein the first emulsion layer contains a magenta dye forming coupler and a sensitizing dye for the green region of the spectrum and the second emulsion layer contains a cyan dye forming coupler and sensitizing dyes for each of the red and the green regions of the spectrum.
Claim 6
Dependent Claim
40 words
The photographic element of claim 4 wherein the red sensitized emulsion contains green sensitizing dye in an amount of 5 to 30 percent by weight of the amount of green sensitizing dye that is contained in the green sensitized emulsion.
Claim 7
Dependent Claim
74 words
The photographic element of claims 1, 2 or 4, capable of forming a positive multicolor dye image comprised of a support, a blue-sensitive, yellow-dye-image-forming silver halide emulsion, a green-sensitized, magenta-dye-image-forming silver halide emulsion layer, and a red-sensitized, cyan-dye-image-forming silver halide emulsion, wherein the red sensitized emulsion layer contains a green sensitizing dye in an amount up to 30% by weight of the amount of green sensitizing dye contained in the green sensitized emulsion layer.
Claim 8
Dependent Claim
21 words
The photographic element of claim 6 wherein the magenta dye forming coupler is 1-(2,4,6-trichlorophenyl)-3-(2-chloro-5-(α-{4-hydroxy-3-tert-butyl-phenoxy}tetradecanamido)-anilino]-5-pyrazolone and the cyan dye-forming coupler is 2-[α-(2,4-di-tert-amylphenoxy)butyramido]-4,6-dichloro-5-ethylphenol.
Claim 9
Dependent Claim
21 words
The photographic element of claim 6 wherein the magenta dye forming coupler is 1-(2,4,6-trichlorophenyl)-3-(2-chloro-5-tetradecanamido)anilino-4-(-2-pivalamido)phenylthio-2-pyrazolin-5-one and the cyan dye-forming coupler is 2-[α-(2,4-di-tert-amylphenoxy)butyramido]-4,6-dichloro-5-ethylphenol.
Claim 10
Dependent Claim
26 words
The photographic element of claim 7 or 8 wherein the green sensitizing dye is anhydro-5-chloro-9-ethyl-5′-phenyl-3′-(3-sulfobutyl)-3-(3-sulfopropyl)oxacarbocyanine hydroxide, sodium salt and the red sensitizing dye is anhydro-3-ethyl-9,11-neopentylene-3′-(3-sulfopropyl)-thiadicarbocyanine hydroxide.
Claim 11
Dependent Claim
39 words
The photographic element of claim 9 wherein the green sensitizing dye is present in the red sensitized emulsion layer in an amount that is 5 to 15% by weight of the amount present in the green sensitized emulsion layer.
References Cited (Backward Citations)
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