US3846133A - Multilayered color photographic material with improved stability under tropical conditions - Google Patents
Multilayered color photographic material with improved stability under tropical conditions Download PDFInfo
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- US3846133A US3846133A US00294955A US29495572A US3846133A US 3846133 A US3846133 A US 3846133A US 00294955 A US00294955 A US 00294955A US 29495572 A US29495572 A US 29495572A US 3846133 A US3846133 A US 3846133A
- Authority
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- United States
- Prior art keywords
- silver
- silver halide
- color
- sensitized
- layer containing
- Prior art date
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- Expired - Lifetime
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- 239000000463 material Substances 0.000 title description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052709 silver Inorganic materials 0.000 claims abstract description 35
- 239000004332 silver Substances 0.000 claims abstract description 35
- 239000000839 emulsion Substances 0.000 claims abstract description 28
- -1 SILVER HALIDE Chemical class 0.000 claims abstract description 24
- ZUNKMNLKJXRCDM-UHFFFAOYSA-N silver bromoiodide Chemical compound [Ag].IBr ZUNKMNLKJXRCDM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 description 8
- 230000035945 sensitivity Effects 0.000 description 7
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 6
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 6
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 235000010265 sodium sulphite Nutrition 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 108010010803 Gelatin Proteins 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 150000004682 monohydrates Chemical class 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- ZFIQGRISGKSVAG-UHFFFAOYSA-N 4-methylaminophenol Chemical compound CNC1=CC=C(O)C=C1 ZFIQGRISGKSVAG-UHFFFAOYSA-N 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 235000019445 benzyl alcohol Nutrition 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- BEGBSFPALGFMJI-UHFFFAOYSA-N ethene;sodium Chemical group [Na].C=C BEGBSFPALGFMJI-UHFFFAOYSA-N 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 1
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 description 1
- 150000008427 organic disulfides Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/392—Additives
- G03C7/39204—Inorganic compounds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
Definitions
- This invention relates to a multilayered color photographic material whose stability under tropical conditions is improved by the addition of colloidal silver to at least one spectrally sensitized silver halide emulsion layer.
- the necessary stability can be achieved by after-ripening the silver halide emulsions and by adding stabilizers such as mercapto compounds, organic disulfides, alkali metal thiosulfate complexes or triazaindolizines to the emulsions before casting the emulsions on a layer support.
- stabilizers such as mercapto compounds, organic disulfides, alkali metal thiosulfate complexes or triazaindolizines
- any form of colloidal silver would have the effect required according to the invention but the yellow form dispersed in gelatin, so-called yellow silver, is pre ferred because it is almost completely transparent to red and green light and absorbs only blue light which is unwanted in the cyan-forming and magenta-forming layers.
- the blue sensitive yellow-forming layer whose sensitivity would be reduced to a greater extent by the yellow silver, is in most cases much more resistant to tropical conditions than the cyan-forming and the magenta-forming layer and therefore generally, does not need stabilization with yellow silver.
- colloidal silver to be added depend on the degree to which the stability under tropical conditions is required to be increased. In practice, it has been found that quantities of between 0.02 and 0.8 g. of colloidal silver per mol of silver halide are necessary in the emulsion to achieve the stabilizing effect. These quantities have little or no effect on the maximum reversal color density.
- the preparation of various types of colloidal silver has been described in the literature, e.g. in Weisers Colloidal Elements, Wiley & Sons, New York, 1933, which describes the preparation of yellow colloidal silver by the dextrin reduction method of Carey Lea, in German Pat. No. 1,096,193 (colloidal brown and black silver) and in US Pat. No. 2,688,601 (colloidal blue silver).
- EXAMPLE 1 Starting with a highly sensitive silver iodobromide emulsion which has been sensitized to the red region of the spectrum and which contains 5 mols percent of AgI, and 100 g. of 1-hydroxy-N-octadecyl-Z-naphthamide per mol of silver halide as cyan-forming coupler three samples containing 0, 0.4 or 0.16 g. respectively of colloidal yellow silver per mol of silver halide were cast on a layer support of cellulose acetate. The silver content of the layer was 2 -g./m. From each sample, an unexposed strip *was stored for 7 days under conditions simulating a tropical climate, the temperature being 35 C. and the relative atmospheric humidity These strips and a corresponding strip of each sample which had not been stored in a tropical cupboard were exposed through a grey sensitometer wedge. The sample were developed by a process of color reversal development as follows:
- Nitrilotriacetic acid g 2 Sodium sulfite g 5 Hydroxylarnine sulfate g 1 Trisodium phosphate g 20 Potassium bromide g 1 Potassium iodide mg 10 4 amino 3 methyl N ethyl N (ti-methylsulfonamidoethyl -anilinosesquisulfate monohydrate g 9 50% ethylene diamine ml 6 Made up with water to 1000 ml. pH 12.0.
- the samples were then treated by the usual methods of clarifying, bleaching the silver, fixing and washing.
- the developed strips were assessed in a Macbeth densitometer behind a red filter.
- EXAMPLE 4 The procedure is the same as that employed in Example 1 except that a silver iodobromide emulsion of medium sensitivity containing 4 mol percent of AgI is used instead of the highly sensitive emulsion.
- Development temperature 24 C.
- Development time 12 minutes.
- a color-photographic multilayer material having compounds that produce a negative image by imagewise exposure followed by developing treatment or reversal treatment producing positive image comprising at least one red-sensitized silver halide emulsion layer containing a cyan-forming coupler, at least one green-sensitized silver halide emulsion layer containing a magenta-forming coupler and at least one blue-sensitive silver halide emulsion layer containing a yellow-forming coupler, wherein the improvement comprises at least one of the emulsion layers of the group consisting of green-sensitized and redsensitized emulsion layers comprises in the same phase a binder, a silver iodobromide colloidal silver and the color coupler.
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
1. A COLOR-PHOROGRAPHIC MULTIAYER MATERAL HAVING COMPOUNDS THAT PRODUCE A NEGATIVE IMAGE BY IMAGEWISE EXPOSURE FOLLWED BY DEVELOPING TREATMENT OR REVERSAL TREATMENT PRODUCING POSITIVE IMAGE COMPRISING AT LEAST ONE RED-SENSITIZED SILVER HALIDE EMULSION LAYER CONTAINING A CYAN-FORMING COUPLER, AT LAST ONE GREEN-SENSITIZED SILVER HALIDE EMULSION LAYER CONTAINING A MAGENTA-FORMING COUPLER AND AT LEAST ONE BLUE-SENSITIVE SILVER HALIDE EMULSION LAYER CONTAINING A YELLOW-FORMING COUPLER, WHEREIN THE IMPROVEMENT COMPRISES AT LEAST ONE OF THE EMULSION LAYERS OF THE GROUP CONSISTING OF GREEN-SENSITIZED AND REDSENSITIZED EMULSION LAYERS COMPRISES IN THE SAME PHASE A BINDER, A SILVER IODOBROMIDE COLLODIAL SILVER AND THE COLOR COUPLER.
Description
United States Patent MULTILAYEREI) COLOR PHOTOGRAPHIC MATE- RIAL WITH IMPROVED STABILITY UNDER TROPICAL CONDITIONS Hugo Zorn, Munich-Lochhausen, Helmut Broil, Munich, and Erich Reckziegel, Leverkusen, Germany, assignors to Agfa-Gevaert Aktiengesellschatt, Leverkusen, German No i Drawiug. Filed Oct. 4, 1972, Ser. No. 294,955 Claims priority, application Germany, Oct. 6, 1971, P 21 49 837.3 Int. Cl. G03c 1/76, 3/00 US. Cl. 96--'74 3 Claims ABSTRACT OF THE DISCLOSURE Stability to tropical conditions of color photographic multilayer materials comprising blue, green and red sensitive silver halide emulsion layers and color couplers therein, is improved if the red sensitized and/ or the green sensitized silver halide emulsion layer contains colloidal silver.
This invention relates to a multilayered color photographic material whose stability under tropical conditions is improved by the addition of colloidal silver to at least one spectrally sensitized silver halide emulsion layer.
In order to enable photographic films to be stored under mild climatic conditions or at elevated temperatures, the necessary stability can be achieved by after-ripening the silver halide emulsions and by adding stabilizers such as mercapto compounds, organic disulfides, alkali metal thiosulfate complexes or triazaindolizines to the emulsions before casting the emulsions on a layer support. In many cases, particularly in color photographic films, these measures are not sufficient to ensure that the material will be stable when stored under tropical conditions with high humidities.
It has now been found that the stability of multilayered color photographic material against tropical conditions can be improved if at least one of the two silver halide emulsion layers which contain color-forming couplers and are sensitized to the red or green region of the spectrum respectively contains colloidal silver.
It is thought that this stabilizing efiect is due to the colloidal silver protecting the sensitivity centres against the action of temperature and atmospheric moisture. In principle, any form of colloidal silver would have the effect required according to the invention but the yellow form dispersed in gelatin, so-called yellow silver, is pre ferred because it is almost completely transparent to red and green light and absorbs only blue light which is unwanted in the cyan-forming and magenta-forming layers. The blue sensitive yellow-forming layer, whose sensitivity would be reduced to a greater extent by the yellow silver, is in most cases much more resistant to tropical conditions than the cyan-forming and the magenta-forming layer and therefore generally, does not need stabilization with yellow silver. The quantities of colloidal silver to be added depend on the degree to which the stability under tropical conditions is required to be increased. In practice, it has been found that quantities of between 0.02 and 0.8 g. of colloidal silver per mol of silver halide are necessary in the emulsion to achieve the stabilizing effect. These quantities have little or no effect on the maximum reversal color density. The preparation of various types of colloidal silver has been described in the literature, e.g. in Weisers Colloidal Elements, Wiley & Sons, New York, 1933, which describes the preparation of yellow colloidal silver by the dextrin reduction method of Carey Lea, in German Pat. No. 1,096,193 (colloidal brown and black silver) and in US Pat. No. 2,688,601 (colloidal blue silver).
3,846,133 Patented Nov. 5, 1974 The invention is explained with the aid of the following examples which demonstrate the colloidal silver of various forms is suitable for improving the stability under tropical conditions regardless of the nature of the emulsion, of the color coupler and of the method of color development, whether it be reversal development or negative development.
EXAMPLE 1 Starting with a highly sensitive silver iodobromide emulsion which has been sensitized to the red region of the spectrum and which contains 5 mols percent of AgI, and 100 g. of 1-hydroxy-N-octadecyl-Z-naphthamide per mol of silver halide as cyan-forming coupler three samples containing 0, 0.4 or 0.16 g. respectively of colloidal yellow silver per mol of silver halide were cast on a layer support of cellulose acetate. The silver content of the layer was 2 -g./m. From each sample, an unexposed strip *was stored for 7 days under conditions simulating a tropical climate, the temperature being 35 C. and the relative atmospheric humidity These strips and a corresponding strip of each sample which had not been stored in a tropical cupboard were exposed through a grey sensitometer wedge. The sample were developed by a process of color reversal development as follows:
(1) First development: 12 minutes at 24 C. in a thiocyanate-containing metol-hydroquinone developer of the following composition:
Sodium ethylene diaminotetraacetate g 2 p-N-monomethylaminophenol semisulfate g 4 Sodium sulfite g 50 Hydroquinone g 6 Sodium carbonate g 35 Sodium thiocyanate :g 1.5 Potassium bromide g 2 Potassium iodide g 10 Benzotriazole mg 250 Made up with water to 1000 ml.
(2) Washing: 5 minutes.
- (3) Second exposure: 1 minute.
(4) Reversal development: 15 minutes at 24 C. in a color developer of the following composition:
Nitrilotriacetic acid g 2 Sodium sulfite g 5 Hydroxylarnine sulfate g 1 Trisodium phosphate g 20 Potassium bromide g 1 Potassium iodide mg 10 4 amino 3 methyl N ethyl N (ti-methylsulfonamidoethyl -anilinosesquisulfate monohydrate g 9 50% ethylene diamine ml 6 Made up with water to 1000 ml. pH 12.0.
The samples were then treated by the usual methods of clarifying, bleaching the silver, fixing and washing. The developed strips were assessed in a Macbeth densitometer behind a red filter.
The following table shows the specific sensitivity Ss=log I -t for the color density CF (C =color fog at total exposure) and the maximum color density D,,,,,, as well as the changes in these values AS and AD observed after storage under tropical conditions.
TABLE 1 G. of colloidal silver per mol of silver halide--." 0. 04 0. 16
S. 2. 54 2. 57 2. 54 AS. (alter storage under tropical conditions)- 0. 30 -0. 23 0. 19 m 2.36 2.36 2.40 ADmBX. (after storage under tropical conditions) 0. 20 +0. 07 +0. 06
behind a green filter.
TABLE 2 G. of colloidal silver per mol of silver halide 0 0. 04 0. l6 0. 64
2. 34 2. 33 2. 47 --0. 21 0. l7 --0. l1 2. 90 2. 94 2. 6G -0. 0. 02 0. 01.
This table again clearly shows the stabilizing elfect of colloidal yellow silver. It reduces the maximum color density D of the fresh material to a slight extent but has no deleterious eilect on the specific sensitivity S EXAMPLE 3 The procedure is the same as that employed in Example 2 except that g. of a white coupler of the formula 1 (4 sulfophenyl)-3-heptadecyl-4-methyl-pyrazolone- (5) are added per kg. of emulsion in addition to 48 g. of the magenta-forming coupler previously mentioned.
TABLE 3 G. of colloidal silver per mol of silver halide 0 0. 20 0. 40
S, 2. 84 2. 72 2. 66 AS! (after tropical storage 0. 54 0. 48 -O. 13 m" 2. 94 2. 92 2. 94 ADM; (after tropical storage) 0. 16 0. 22 0. 20
EXAMPLE 4 The procedure is the same as that employed in Example 1 except that a silver iodobromide emulsion of medium sensitivity containing 4 mol percent of AgI is used instead of the highly sensitive emulsion.
TABLE 4 G. of colloidal silver per mol of silver halide EXAMPLE 5 The procedure is the same as that employed in Example 4 with the exception that various types of colloidal silver "re added to the medium sensitivity cyan-forming layer to improve the stability under tropical conditions. The materials are subjected once to a reversal development as in the previous examples and once to a conventional color negative development using a color developer of the following composition:
Benzyl alcohol ml 4.2 Sodium hexametaphosphate g 2 Sodium sulfite anhydrous g 2 Potassium bromide g 1.5 Sodium metaborate cryst g 4 amino 3 methyl N ethyl N (B methylsulfonamido ethyl) anilinosesquisulfate monohydrate g 5 Made up with water to 1000 ml. pH l0.8i0.l.
Development temperature, 24 C. Development time, 12 minutes.
The relative sensitivity S achieved in colour negative development is indicated in log I 1 units measured at density 0.1 over the fog.
TABLE 5 Colloidal yellow Grey Nature of colloidal silver added silver 1 brown 2 Black 3 G. of colloidal silver per mol of silver halide 0. 60 0. 60 0. 60 Reversal development:
2. l9 2. 23 2. 10 A S! (after troplcal stcrag +0. 01 -0. 16 0. 20 ms; 2. 1. 84 2. 14 2. l2 ADmsx. (after tropical storage), +0. 11 -0. 14 +0. 01 0 Colour negative development:
S 3. 40 3. 30 3. 25 3. 15 A S (after tropical storage)-. 0. 42 +0. 12 -0. 27 0 1 Prepared by Carey Leo. method.
According to D.B.P. No. 1,096,193, Example 1, but without blue black particles. tiglggcording to D.B.P. No. 1,096,193, Example 1 (with blue black par- What is claimed is:
1. A color-photographic multilayer material having compounds that produce a negative image by imagewise exposure followed by developing treatment or reversal treatment producing positive image comprising at least one red-sensitized silver halide emulsion layer containing a cyan-forming coupler, at least one green-sensitized silver halide emulsion layer containing a magenta-forming coupler and at least one blue-sensitive silver halide emulsion layer containing a yellow-forming coupler, wherein the improvement comprises at least one of the emulsion layers of the group consisting of green-sensitized and redsensitized emulsion layers comprises in the same phase a binder, a silver iodobromide colloidal silver and the color coupler.
2. A color-photographic material as claimed in claim 1 wherein said colloidal silver containing layer contains 0.02 to 0.8 :g. of colloidal silver per mol of silver iodobromdie.
3. A color-photographic material as claimed in claim 1 wherein the said colloidal silver containing layer contains a gelatin binder and a yellow colloidal silver.
References Cited UNITED STATES PATENTS 2,673,800 3/1954 Meeussen et al. 9674 X 2,704,711 3/1955 Hanson, Jr. 9674 X 2,875,052 2/1959 Weyde 9668 3,206,310 9/1965 Herz 9667 3,211,552 10/1965 Chu 9674 DAVID KLEIN, Primary Examiner A. T. SURO PICG, Assistant Examiner U.S. Cl. X.R. 96-22, 114.7
Claims (1)
1. A COLOR-PHOROGRAPHIC MULTIAYER MATERAL HAVING COMPOUNDS THAT PRODUCE A NEGATIVE IMAGE BY IMAGEWISE EXPOSURE FOLLWED BY DEVELOPING TREATMENT OR REVERSAL TREATMENT PRODUCING POSITIVE IMAGE COMPRISING AT LEAST ONE RED-SENSITIZED SILVER HALIDE EMULSION LAYER CONTAINING A CYAN-FORMING COUPLER, AT LAST ONE GREEN-SENSITIZED SILVER HALIDE EMULSION LAYER CONTAINING A MAGENTA-FORMING COUPLER AND AT LEAST ONE BLUE-SENSITIVE SILVER HALIDE EMULSION LAYER CONTAINING A YELLOW-FORMING COUPLER, WHEREIN THE IMPROVEMENT COMPRISES AT LEAST ONE OF THE EMULSION LAYERS OF THE GROUP CONSISTING OF GREEN-SENSITIZED AND REDSENSITIZED EMULSION LAYERS COMPRISES IN THE SAME PHASE A BINDER, A SILVER IODOBROMIDE COLLODIAL SILVER AND THE COLOR COUPLER.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712149837 DE2149837A1 (en) | 1971-10-06 | 1971-10-06 | COLOR PHOTOGRAPHIC MULTI-LAYER MATERIAL WITH IMPROVED TROPICAL STABILITY |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3846133A true US3846133A (en) | 1974-11-05 |
Family
ID=5821604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00294955A Expired - Lifetime US3846133A (en) | 1971-10-06 | 1972-10-04 | Multilayered color photographic material with improved stability under tropical conditions |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3846133A (en) |
| JP (1) | JPS4846332A (en) |
| BE (1) | BE789217A (en) |
| DE (1) | DE2149837A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4047956A (en) * | 1975-11-17 | 1977-09-13 | E. I. Du Pont De Nemours And Company | Low coating weight silver halide element and process |
| US4252892A (en) * | 1979-12-10 | 1981-02-24 | Eastman Kodak Company | Photographic color developer compositions |
| US4554245A (en) * | 1983-01-28 | 1985-11-19 | Fuji Photo Film Co., Ltd. | Color reversal light-sensitive materials |
-
0
- BE BE789217D patent/BE789217A/en unknown
-
1971
- 1971-10-06 DE DE19712149837 patent/DE2149837A1/en active Pending
-
1972
- 1972-10-04 US US00294955A patent/US3846133A/en not_active Expired - Lifetime
- 1972-10-06 JP JP47099957A patent/JPS4846332A/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4047956A (en) * | 1975-11-17 | 1977-09-13 | E. I. Du Pont De Nemours And Company | Low coating weight silver halide element and process |
| US4252892A (en) * | 1979-12-10 | 1981-02-24 | Eastman Kodak Company | Photographic color developer compositions |
| US4554245A (en) * | 1983-01-28 | 1985-11-19 | Fuji Photo Film Co., Ltd. | Color reversal light-sensitive materials |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4846332A (en) | 1973-07-02 |
| DE2149837A1 (en) | 1973-04-12 |
| BE789217A (en) | 1973-03-26 |
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