Patent EP0107817A2 successfully refreshed from Google Patents.
EP0107817A2
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EP
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Multilayer silver halide reversal color photographic material
Assignee: Fujifilm Holdings Corp
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Filing: 1983-10-05
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Granted: —
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Expires: 2003-10-05
Abstract
Abstract A multilayer silver halide reversal color photographic material is disclosed. The material has on a support three or more silver halide emulsion layers having the same color sensitivity but different photographic sensitivities. The highest sensitivity emulsion layer and the second highest sensitivity emulsion layer among the above-described silver halide emulsion layers have silver halide emulsions of an iodide content of 4.5 mole % or less and such a grain size distribution that 85% or more, by number or by weight, of whole silver halide grains in the emulsion have sizes which are within ± 40% of its mean grain size. The material provides good granularity of the resulting dye image.
Inventors
- 👤 Sadao Kamei
- 👤 Nobuaki Miyasaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 21:11
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3022
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
A multilayer silver halide reversal color photographic material having on a support at least three or more silver halide emulsion layers which have the same color sensitivity but different photographic sensitivities, among said emulsion layers at least both the emulsion layer having the highest photographic sensitivity and the emulsion layer having the second highest photographic sensitivity, containing silver halide emulsions in which iodide contents in their respective halides are 4.5 mole % or less and their respective grain size distributions being such that 85 % or more, by number or by weight, of the whole silver halide grains in said emulsion have sizes which are within t 40 % of its mean grain size.
Claim 2
Dependent Claim
114 words
A multilayer silver halide reversal color photographic material having on a support at least three or more silver halide emulsion layers which have the same color sensitivity but different photographic sensitivities, among said emulsion layers at least both the emulsion layer having the highest photographic sensitivity and the emulsion layer having the second highest photographic sensitivity, containing silver halide emulsions in which iodide contents in their respective halides are 4.5 mole % or less and their respective grain size distributions being such that 85 % or more, by number or by weight, of the whole silver halide grains in said emulsion have sizes which are within t 40 % of its mean grain size.
Claim 3
Dependent Claim
51 words
A multilayer silver halide reversal color photographic material as claimed in Claim 1, wherein the highest photographic sensitivity emulsion layer has a developed color density in the range of 0.2 to 2.0 and the second highest photographic sensitivity emulsion layer has a reversal densitiy in the range of 0.2 to 2.0.
Claim 4
Dependent Claim
50 words
A'multilayer silver halide reversal color photographic material as claimed in Claim 2, wherein the highest photographic sensitivity emulsion layer has a developed color density in the range of 0.3 to 1.5 and the second highest photographic sensitivity emulsion layer has a reversal density in the range of 0.3 to 1.5.
Claim 5
Dependent Claim
45 words
A multilayer silver halide reversal color photographic material as claimed in one of the preceding Claims, wherein the highest photographic sensitivity emulsion layer and the second highest photographic sensitivity emulsion layer have iodide contents in the range of 0.5 mole % to 3.0 mole %.
Claim 6
Dependent Claim
67 words
A multilayer silver halide reversal color photographic material as claimed in one of the preceding Claims, wherein the highest photographic sensitivity emulsion layer and the second highest sensitivity emulsion layer have grain size distributions such that 90 % or more, by number or by weight, of the whole silver halide grains in said emulsions have sizes which are within ± 40 % of its mean grain size.
Claim 7
Dependent Claim
52 words
A multilayer silver halide reversal color photographic material as claimed in one of the preceding Claims, wherein the difference in a photographic sensitivity between the highest photographic sensitivity emulsion layer and the second highest photographic sensitivity emulsion layer is in the range of 0.2 to 1.0 as expressed in terms of logarithm.
Claim 8
Dependent Claim
49 words
A multilayer silver halide reversal color photographic material as claimed in Claim 6, wherein the difference in a photographic sensitivity between the highest photographic sensitivity emulsion layer and the second highest photographic sensitivity emulsion layer is in the range of 0.3 to 0.8 as expressed in terms of logarithm.
Claim 9
Dependent Claim
56 words
A multilayer silver halide reversal color photographic material as claimed in one of the preceding Claims, wherein the difference in a photographic sensitivity between the second highest photographic sensitivity emulsion layer and another or one of other low photographic sensitivity emulsion layers is in the range of 0.3 to 1.5 as expressed in terms of logarithm.
Claim 10
Dependent Claim
44 words
A multilayer silver halide reversal color photographic material as claimed in one of the preceding Claims, wherein the difference in a photographic sensitivity between the low photographic sensitivity emulsion layers is in the range of 0.3 to 1.5 as expressed in terms of logarithm.
References Cited (Backward Citations)
No citation records indexed.
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