US2336327A - Preventing color stain in photographic emulsions - Google Patents
Preventing color stain in photographic emulsions Download PDFInfo
- Publication number
- US2336327A US2336327A US418918A US41891841A US2336327A US 2336327 A US2336327 A US 2336327A US 418918 A US418918 A US 418918A US 41891841 A US41891841 A US 41891841A US 2336327 A US2336327 A US 2336327A
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- sensitive
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- emulsion layers
- color
- gelatin
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- 239000000839 emulsion Substances 0.000 title description 32
- 239000010410 layer Substances 0.000 description 57
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 17
- 108010010803 Gelatin Proteins 0.000 description 15
- 229920000159 gelatin Polymers 0.000 description 15
- 239000008273 gelatin Substances 0.000 description 15
- 235000019322 gelatine Nutrition 0.000 description 15
- 235000011852 gelatine desserts Nutrition 0.000 description 15
- 150000001875 compounds Chemical class 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 239000000975 dye Substances 0.000 description 8
- 239000011229 interlayer Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 229910052709 silver Inorganic materials 0.000 description 8
- 239000004332 silver Substances 0.000 description 8
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- HUYSCRCIPIWDPL-UHFFFAOYSA-N 2,3-dipentylbenzene-1,4-diol Chemical compound CCCCCC1=C(O)C=CC(O)=C1CCCCC HUYSCRCIPIWDPL-UHFFFAOYSA-N 0.000 description 3
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical class NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 150000005205 dihydroxybenzenes Chemical class 0.000 description 3
- PMWJOLLLHRDHNP-UHFFFAOYSA-N 2,3-dioctylbenzene-1,4-diol Chemical compound CCCCCCCCC1=C(O)C=CC(O)=C1CCCCCCCC PMWJOLLLHRDHNP-UHFFFAOYSA-N 0.000 description 2
- ZNQOWAYHQGMKBF-UHFFFAOYSA-N 2-dodecylbenzene-1,4-diol Chemical compound CCCCCCCCCCCCC1=CC(O)=CC=C1O ZNQOWAYHQGMKBF-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- -1 silver halide Chemical class 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- AJDUTMFFZHIJEM-UHFFFAOYSA-N n-(9,10-dioxoanthracen-1-yl)-4-[4-[[4-[4-[(9,10-dioxoanthracen-1-yl)carbamoyl]phenyl]phenyl]diazenyl]phenyl]benzamide Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2NC(=O)C(C=C1)=CC=C1C(C=C1)=CC=C1N=NC(C=C1)=CC=C1C(C=C1)=CC=C1C(=O)NC1=CC=CC2=C1C(=O)C1=CC=CC=C1C2=O AJDUTMFFZHIJEM-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001043 yellow dye Substances 0.000 description 1
Images
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
- G03C7/39208—Organic compounds
- G03C7/39212—Carbocyclic
- G03C7/39216—Carbocyclic with OH groups
Definitions
- This invention relates to color photography and particularly to a method for preventing the formation of color fog in photographic emulsions.
- an object of the present inven-- tion to provide a method for prevention of the color stain formed by coupling of the oxidized developer and a coupler compound in unexposed portions of a multi-layer material.
- a further object is to prevent the formation of color stain in multi-layer photographic materials caused by the physical development of colloidal silver in an intermediate filter layer.
- a still further object is to provide a method for overcoming the stain produced in multi-layer photographic materials containing color formers.
- the compounds which we have found suitable for incorporation in interlayers according to our invention include aminophenols and dihydroxybenzenes such as the following:
- Example 2 A solution was made of 0.05 gram of diamylhydroquinone and 0.4 gram of tri-o-cresyl phosphate in 20 cc. oi. ethyl acetate. This solution was emulsified with 30 cc. of a 0.5% aqueous solution of triisopropylnaphthalenesulfonate by passing the whole mixture through a. colloid mill. The emulsion was warmed with stirring to drive oil the ethyl acetate leaving a dispersion in water of a solution of diamylhydroquinone in tri-o-cresylphosphate. This was added to 50 cc. of a 5% gelatin solution containing 0.318 gram of colloidal silver and was then coated.
- I0 is a support or paper, cellulose ester, synthetic resin, glass or othersuitable material on which are coated emulsion layers II, I! and I3 sensitive, respectively, to the red, green and blue regions of the spectrum.
- These emulsion layers may or may not contain colorforming compounds and if color-forming compounds are incorporated in them they will ordinarily be or such composition that a cyan dye is produced in the red-sensitive emulsion layer, a magenta dye in the green-sensitive emulsion layer and a yellow dye in the blue-sensitive emulsionlayer.
- layers l2 and Hi there is a layer it of gelatin containing colloidal silver and one of the reducing agents according to our invention.
- Fig. 2 illustrates a similar material in which the support I0 is coated with emulsion layers II, II, and I3, and has a colloidal silver filter layer ll containing a reducing agent. Between may, of course, be used with multi-layer material coated on transparent supports as well as that on opaque supports.
- a multi-layer photographic element having a plurality of emulsion layers sensitive to difierent spectral regions, and at least one insensitive gelatin interlayer containing a reducing agent selected from the class consisting of aminophenols and dihydroxy'benzenes incapable of difiusing in gelatin.
- a inulti-layer photographic element having a plurality of emulsion layers sensitive to dverent spectral regions and containing non-diffusing color-forming compounds, and between two fusing color-forming compounds, and between two of said emulsion layers a gelatin layer con- V taining colloidal silver and a dihydroxybenzene emulsion layers II and I! there is an interlayer 15 of plain gelatin containing one of the reducing agents used according to our invention.
- Our process is particularly useful with paper or other opaque supports, where it is important to reduce the minimum fog density as far as possible. This applies both to negative developed material and to reversal material.
- Our method having attached thereto an alkyl radical of at least 5 carbon atoms.
- a multi-layer photographic element cornprising a support having thereon gelatino-silver halide emulsion layers sensitive respectively, to the red, green and blue regions of the spectrum, and between the green sensitive and blue sensitive layers, a gelatin filter layer containing colloidal silver and a dihydroxy benzene incapable of diffusing in gelatin.
- a multi-layer photographic element comprising a support having thereon gelatino-silver halide emulsion layers sensitive respectively, to the red, green and blue regions of the spectrum, and between the green sensitive and blue sensitive layers, a gelatin filter layer containing colloidal silver and a.- dihydroxybenzene having attached thereto an alkyl radical of at least 5 carbon atoms.
- a multi-layer photographic element comprising a support'having thereon gelatino-silver halide emulsion layers sensitive, respectively, to the red, green and blue regions or the spectrum, and between the green sensitive and blue sensitive layers, a gelatin filter layer containing col-- loidal silver and lauryl hydroquinone.
- a multi-layer photographic element comprising a support having thereon gelatino-silver halide emulsion layers sensitive, respectively, to the red, green and blue regions of the spectrum, and between the green-sensitive .and blue-sensitive layers a gelatin filter layer containing colloidal silver and diamyl hydroquinone.
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Description
1943- A. WEISSBERGER ETAL 2,336,327
' PREVENTING COLOR STAIN IN PHOTOGRAPHIC EMUILSIONS Filed NOV. 13, 1941 BLUE SENSITIVE EMULSION.
COLLO/DAL SILVER LAYER CON TA/N- [N6 REDUCING AGENT.
Fla. 2 H
, BLUE SENSITIVE EMULSION. coLLoloAL SILVER LAYER con/mm- /2 we REo cm/e AGE/YT. REE/Y SENSITIVE EMULSION. H INTERLA YER CONTAIN/N6 REDUC- we AGE/v7: /0- RED SENSITIVE EMULSION.
suppom:
ARNOLD WEISSBERGER EDWIN EJELLEV INVENTORS BY 3 5 I I A TTORNE Y? Patented Dec. 7, 1943 PREVENTING COLOR 's'rAm m rnorocmrmc EMULSIONS Arnold Weissberger and Edwin arena, Rochester, N. Y., assignors to Eastman Kodak Company, Rochester, N. Y., a corporation of New Jersey Application November 13, 1941, Serial No. 418,918
This invention relates to color photography and particularly to a method for preventing the formation of color fog in photographic emulsions.
One of the difiiculties frequently encountered in processes of color photography in which a colored image is formed by coupling an oxidized developer with a coupler-compound present either in the developer or the emulsion layer, is the formation of color fog or stain. In multi-layer photographic elements in which there isa filter layer of colloidal silver between the sensitive emulsion layers, it has been found that physical I development of the colloidal silver takes place during color development. This physical development produces activated developer molecules which diffuse into the adjacent emulsion layers and produce dye images therein in areas which have not been exposed to light. Where the colloidal silver layer is between the blue-sensitive and green sensitive emulsion layers in which yellow and magenta dye images are formed, bothyellow and magenta dyes may be produced in areas which have not been exposed to light. The effect of this is to produce an'orange colored stain in the photographic material.
It is, therefore, an object of the present inven-- tion to provide a method for prevention of the color stain formed by coupling of the oxidized developer and a coupler compound in unexposed portions of a multi-layer material. A further object is to prevent the formation of color stain in multi-layer photographic materials caused by the physical development of colloidal silver in an intermediate filter layer. A still further object is to provide a method for overcoming the stain produced in multi-layer photographic materials containing color formers. Other objects will appear from the following description of our invention.
These objects are accomplished by incorporating in an intermediate layer, especially a colloidal silver filter layer, substances which destroy the activated developer without the production of dye. Such substances must not diffuse into the adjacent emulsion layers but must be sufficiently non-difiusing to stay in the interlayer in which they are incorporated. Compounds which we have found to be especially useful for this purpose are reducing agents such as amino phenols and dihydroxybenzenes, especially dihydroxybenzenes in which there is an alkyl substituent having a carbon chain of at least in a plain interlayer according to our invention" The incorporation of color forming compo,-
nents in silver halide emulsion layers was described in Fischer U. S. Patent 1,102,028, granted June 30, 1914. These components are com pounds such as phenolic hydroxyl compounds 7 or compounds with reactive methylene groups.
which are capable of reacting with the development product of primary aromatic amino photographic developers to produce dyes. The color formers may be added directly to the emulsion layers as described. by Fischer or they may be incorporated in a separate medium which is in-' soluble in the carrier for the sensitive silver halide as described in Marines 8: Godowsky U. S. application Serial No. 314,689, filed January 19, 1940, and in Jelley andivittum U. S. application SerialNo. 371,612, filed December 26, 1940.
In processes of this type in which color forming components are incorporated in the sensitive emulsion layers or in a process such as that described in Marines, Godowsky 8: Wilder U. S. Patent 2,252,718, granted August 19, 1941, in which the couplers are contained in the developing solutions, it is frequently desirable to use. a layer of colloidal silver between the blue-sensitive and green-sensitiveemulsion layers in order to filter out any blue light which ,would' expose veloper molecules are readily diifusible through the emulsion layers, they may produce a dye image in immediately adjacent emulsion layers or in the filter layer itself where color forming compounds are used in the developing solution and also diffuse throughout the emulsion layers.
The compounds which we have found suitable for incorporation in interlayers according to our invention include aminophenols and dihydroxybenzenes such as the following:
2,5-Dimethyl-4- 'y -phenylpropylaminophe- Amyl hydroquinone Lauryl hydroquinone Heptyl hydroquinone Diamylhydroquinone. Dioctylhydroquinone (7) 2,5-Dihydroxydiphenyl (8) 2,5-Dihydroxy-4-amyldiphenyl The amount of these'agents usedin the gelatin interlayer, may vary from about 0.1 gram to 5 grams per liter of gelatin solution '(5 to 7%) gelatin but these values should be taken only as il- 0.5 cc. of 20% aqueous sodium hydroxide.
The following examples illustrate the formation of the interlayer accordingto our invention:
Example! To 50 cc. of a 5% gelatin solution containing 0.318 gram of colloidal silver there was added a solution of 0.05 gram of lauryl hydroquinone dissolved in'a mixture of 6 cc. of ethyl alcohol and The well mixed solution was then brought to the neutral point by adding aqueous citric acid in an amount equivalent to the sodium hydroxide used and the mixture was then ready for coating.
Example 2 A solution was made of 0.05 gram of diamylhydroquinone and 0.4 gram of tri-o-cresyl phosphate in 20 cc. oi. ethyl acetate. This solution was emulsified with 30 cc. of a 0.5% aqueous solution of triisopropylnaphthalenesulfonate by passing the whole mixture through a. colloid mill. The emulsion was warmed with stirring to drive oil the ethyl acetate leaving a dispersion in water of a solution of diamylhydroquinone in tri-o-cresylphosphate. This was added to 50 cc. of a 5% gelatin solution containing 0.318 gram of colloidal silver and was then coated.
Our invention will now be described by reference to the accompanying drawing. As shown in the Fig. 1 thereof, I0 is a support or paper, cellulose ester, synthetic resin, glass or othersuitable material on which are coated emulsion layers II, I! and I3 sensitive, respectively, to the red, green and blue regions of the spectrum. These emulsion layers may or may not contain colorforming compounds and if color-forming compounds are incorporated in them they will ordinarily be or such composition that a cyan dye is produced in the red-sensitive emulsion layer, a magenta dye in the green-sensitive emulsion layer and a yellow dye in the blue-sensitive emulsionlayer. Between layers l2 and Hi there is a layer it of gelatin containing colloidal silver and one of the reducing agents according to our invention.
Fig. 2 illustrates a similar material in which the support I0 is coated with emulsion layers II, II, and I3, and has a colloidal silver filter layer ll containing a reducing agent. Between may, of course, be used with multi-layer material coated on transparent supports as well as that on opaque supports.
It will be understood that the examples and modifications are by way of example only and that our invention is to be taken as limited only by the scope of the appended claims.
We claim:
1. A multi-layer photographic element having a plurality of emulsion layers sensitive to difierent spectral regions, and at least one insensitive gelatin interlayer containing a reducing agent selected from the class consisting of aminophenols and dihydroxy'benzenes incapable of difiusing in gelatin.
2. A inulti-layer photographic element having a plurality of emulsion layers sensitive to diilerent spectral regions and containing non-diffusing color-forming compounds, and between two fusing color-forming compounds, and between two of said emulsion layers a gelatin layer con- V taining colloidal silver and a dihydroxybenzene emulsion layers II and I! there is an interlayer 15 of plain gelatin containing one of the reducing agents used according to our invention.
Our process is particularly useful with paper or other opaque supports, where it is important to reduce the minimum fog density as far as possible. This applies both to negative developed material and to reversal material. Our method having attached thereto an alkyl radical of at least 5 carbon atoms.
4. A multi-layer photographic element cornprising a support having thereon gelatino-silver halide emulsion layers sensitive respectively, to the red, green and blue regions of the spectrum, and between the green sensitive and blue sensitive layers, a gelatin filter layer containing colloidal silver and a dihydroxy benzene incapable of diffusing in gelatin.
, 5. A multi-layer photographic element comprising a support having thereon gelatino-silver halide emulsion layers sensitive respectively, to the red, green and blue regions of the spectrum, and between the green sensitive and blue sensitive layers, a gelatin filter layer containing colloidal silver and a.- dihydroxybenzene having attached thereto an alkyl radical of at least 5 carbon atoms.
6. A multi-layer photographic element comprising a support'having thereon gelatino-silver halide emulsion layers sensitive, respectively, to the red, green and blue regions or the spectrum, and between the green sensitive and blue sensitive layers, a gelatin filter layer containing col-- loidal silver and lauryl hydroquinone.
'7. A multi-layer photographic element comprising a support having thereon gelatino-silver halide emulsion layers sensitive, respectively, to the red, green and blue regions of the spectrum, and between the green-sensitive .and blue-sensitive layers a gelatin filter layer containing colloidal silver and diamyl hydroquinone.
ARNOLD WEISSBERGER. EDWIN E. JELLEY.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US418918A US2336327A (en) | 1941-11-13 | 1941-11-13 | Preventing color stain in photographic emulsions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US418918A US2336327A (en) | 1941-11-13 | 1941-11-13 | Preventing color stain in photographic emulsions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2336327A true US2336327A (en) | 1943-12-07 |
Family
ID=23660074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US418918A Expired - Lifetime US2336327A (en) | 1941-11-13 | 1941-11-13 | Preventing color stain in photographic emulsions |
Country Status (1)
| Country | Link |
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| US (1) | US2336327A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2661293A (en) * | 1946-10-08 | 1953-12-01 | Polaroid Corp | Process of producing a colored photographic image by means of exhaustion of developer |
| US2665986A (en) * | 1939-11-02 | 1954-01-12 | Gevaert Photo Prod Nv | Process of producing colored reversal images |
| DE1031128B (en) * | 1951-12-15 | 1958-05-29 | Eastman Kodak Co | Process for the suppression of color fog in the development of diffusion-resistant blue-green and yellow coupler-containing color photographic halogenated silver materials |
| US3180734A (en) * | 1959-11-05 | 1965-04-27 | Gevaert Photo Prod Nv | Light sensitive photographic color element |
| US3206310A (en) * | 1961-08-25 | 1965-09-14 | Eastman Kodak Co | Modification of colloidal metals and metal sulfides to reduce action as a nucleus for physical development |
| US3380828A (en) * | 1965-08-02 | 1968-04-30 | Eastman Kodak Co | Antistain agents for spectrally sensitized silver halide photographic elements |
| US3459548A (en) * | 1967-07-24 | 1969-08-05 | Polaroid Corp | Scavengers for oxidized developing agent |
| JPS519828A (en) * | 1974-07-15 | 1976-01-26 | Fuji Photo Film Co Ltd | HAROGENKAGINKARAASHINKANKOZAIRYO |
| US3945829A (en) * | 1973-07-19 | 1976-03-23 | Agfa-Gevaert Aktiengesellschaft | Color photographic multilayer material with improved color density |
| US3960570A (en) * | 1973-02-09 | 1976-06-01 | Fuji Photo Film Co., Ltd. | Color photographic silver halide light-sensitive materials |
| US3982944A (en) * | 1974-02-06 | 1976-09-28 | Fuji Photo Film Co Ltd | Antifoggant dispersion for color photographic materials |
| US4192678A (en) * | 1978-11-15 | 1980-03-11 | Eastman Kodak Company | N-alkyl- or N-aryl-benzisoxazolone scavenger compounds |
| US4205987A (en) * | 1978-11-15 | 1980-06-03 | Eastman Kodak Company | Sulfonamido phenol scavenger compounds |
| EP0112162A2 (en) | 1982-12-13 | 1984-06-27 | Konica Corporation | Light-sensitive silver halide photographic material |
| US4471049A (en) * | 1983-04-12 | 1984-09-11 | Eastman Kodak Company | Dye image-generating photographic elements |
| EP0218266A2 (en) | 1984-05-02 | 1987-04-15 | Fuji Photo Film Co., Ltd. | Silver halide color photographic light-sensitive material |
| EP0256537A2 (en) | 1986-08-15 | 1988-02-24 | Fuji Photo Film Co., Ltd. | Color print and a method for producing the same |
| US5153109A (en) * | 1987-03-25 | 1992-10-06 | Fuji Photo Film Co., Ltd. | Method for processing silver halide color photosensitive materials |
| US5298369A (en) * | 1991-12-19 | 1994-03-29 | Eastman Kodak Company | Use of colloidal silver to improve push processing of a reversal photographic element |
-
1941
- 1941-11-13 US US418918A patent/US2336327A/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2665986A (en) * | 1939-11-02 | 1954-01-12 | Gevaert Photo Prod Nv | Process of producing colored reversal images |
| US2661293A (en) * | 1946-10-08 | 1953-12-01 | Polaroid Corp | Process of producing a colored photographic image by means of exhaustion of developer |
| DE1031128B (en) * | 1951-12-15 | 1958-05-29 | Eastman Kodak Co | Process for the suppression of color fog in the development of diffusion-resistant blue-green and yellow coupler-containing color photographic halogenated silver materials |
| US3180734A (en) * | 1959-11-05 | 1965-04-27 | Gevaert Photo Prod Nv | Light sensitive photographic color element |
| US3206310A (en) * | 1961-08-25 | 1965-09-14 | Eastman Kodak Co | Modification of colloidal metals and metal sulfides to reduce action as a nucleus for physical development |
| US3380828A (en) * | 1965-08-02 | 1968-04-30 | Eastman Kodak Co | Antistain agents for spectrally sensitized silver halide photographic elements |
| US3459548A (en) * | 1967-07-24 | 1969-08-05 | Polaroid Corp | Scavengers for oxidized developing agent |
| US3960570A (en) * | 1973-02-09 | 1976-06-01 | Fuji Photo Film Co., Ltd. | Color photographic silver halide light-sensitive materials |
| US3945829A (en) * | 1973-07-19 | 1976-03-23 | Agfa-Gevaert Aktiengesellschaft | Color photographic multilayer material with improved color density |
| US3982944A (en) * | 1974-02-06 | 1976-09-28 | Fuji Photo Film Co Ltd | Antifoggant dispersion for color photographic materials |
| JPS519828A (en) * | 1974-07-15 | 1976-01-26 | Fuji Photo Film Co Ltd | HAROGENKAGINKARAASHINKANKOZAIRYO |
| JPS5841503B2 (en) * | 1974-07-15 | 1983-09-12 | 富士写真フイルム株式会社 | Silver halide color photographic material |
| US4192678A (en) * | 1978-11-15 | 1980-03-11 | Eastman Kodak Company | N-alkyl- or N-aryl-benzisoxazolone scavenger compounds |
| US4205987A (en) * | 1978-11-15 | 1980-06-03 | Eastman Kodak Company | Sulfonamido phenol scavenger compounds |
| EP0112162A2 (en) | 1982-12-13 | 1984-06-27 | Konica Corporation | Light-sensitive silver halide photographic material |
| US4471049A (en) * | 1983-04-12 | 1984-09-11 | Eastman Kodak Company | Dye image-generating photographic elements |
| EP0218266A2 (en) | 1984-05-02 | 1987-04-15 | Fuji Photo Film Co., Ltd. | Silver halide color photographic light-sensitive material |
| EP0256537A2 (en) | 1986-08-15 | 1988-02-24 | Fuji Photo Film Co., Ltd. | Color print and a method for producing the same |
| US5153109A (en) * | 1987-03-25 | 1992-10-06 | Fuji Photo Film Co., Ltd. | Method for processing silver halide color photosensitive materials |
| US5298369A (en) * | 1991-12-19 | 1994-03-29 | Eastman Kodak Company | Use of colloidal silver to improve push processing of a reversal photographic element |
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