US2913338A - Prevention of cyan dye fading in color developed prints and films - Google Patents
Prevention of cyan dye fading in color developed prints and films Download PDFInfo
- Publication number
- US2913338A US2913338A US633398A US63339857A US2913338A US 2913338 A US2913338 A US 2913338A US 633398 A US633398 A US 633398A US 63339857 A US63339857 A US 63339857A US 2913338 A US2913338 A US 2913338A
- Authority
- US
- United States
- Prior art keywords
- color
- cyan
- cyan dye
- fading
- prints
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005562 fading Methods 0.000 title description 14
- 230000002265 prevention Effects 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 150000003839 salts Chemical class 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000000839 emulsion Substances 0.000 claims description 11
- 238000011161 development Methods 0.000 claims description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 7
- 229910052791 calcium Inorganic materials 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 7
- 229910052749 magnesium Inorganic materials 0.000 claims description 7
- 239000011777 magnesium Substances 0.000 claims description 7
- 229910052793 cadmium Inorganic materials 0.000 claims description 4
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- -1 AMINO Chemical class 0.000 claims description 2
- 238000004061 bleaching Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 239000001008 quinone-imine dye Substances 0.000 claims 1
- 239000000975 dye Substances 0.000 description 17
- 230000002441 reversible effect Effects 0.000 description 8
- 230000018109 developmental process Effects 0.000 description 7
- KPWJBEFBFLRCLH-UHFFFAOYSA-L cadmium bromide Chemical compound Br[Cd]Br KPWJBEFBFLRCLH-UHFFFAOYSA-L 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 239000007844 bleaching agent Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 229910001864 baryta Inorganic materials 0.000 description 1
- 150000001649 bromium compounds Chemical class 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- YAGKRVSRTSUGEY-UHFFFAOYSA-N ferricyanide Chemical compound [Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] YAGKRVSRTSUGEY-UHFFFAOYSA-N 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- DNXIASIHZYFFRO-UHFFFAOYSA-N pyrazoline Chemical compound C1CN=NC1 DNXIASIHZYFFRO-UHFFFAOYSA-N 0.000 description 1
- 150000004060 quinone imines Chemical class 0.000 description 1
- BHZOKUMUHVTPBX-UHFFFAOYSA-M sodium acetic acid acetate Chemical compound [Na+].CC(O)=O.CC([O-])=O BHZOKUMUHVTPBX-UHFFFAOYSA-M 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000012463 white pigment Substances 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
- G03C7/3046—Processing baths not provided for elsewhere, e.g. final or intermediate washings
Definitions
- the present invention relates to color photography andparticularly to a method and means for inhibiting the fading of cyan dyes in color photographic materials in which color images have been formed by color develop ment with a primary amino developing agent.
- a further object is to provide a composition which will function to prevent cyan dye fading in such color developed prints and transparencies.
- the concentration of the water soluble salts employed ranges from 1 to 5 grams per liter when added to the wash water, or from 1, to SO-grams per liter when used in a. final rinse bath. 1
- the following table shows the stabilizing effect on cyan dye images produced as subsequently noted, of treating color prints or transparencies with a final bath contain-J ing, i.e., cadmium bromide.
- Said photographic multicolor materials include, color reversible film, color negative film, color reversible white printing material coated on an opaque base, and color positive printing'material coated on paper.
- the multilayer color reversible film containing color formers may be prepared by the methods described in U.S.'Patents 2,179,228; 2,179,239; 2,186,849; and 2,220,187, and con sists of an integral tripack emulsion coated on the usual clear film .base.
- Each of the emulsions is sensitized to one of the primary colors, namely, blue, green, and red.
- the top layer is blue sensitive.
- the filter layer yellow in color and blue absorbing, lies beneath the top layer. Below the said filter layer lies a green sensitive emulsion layer, and below this is a red sensitive emulsion layer.
- Each of the three emulsion layers contains a dye forming compound fast to diffusion which, during the development of a silver image by an aromatic amino developing agent forms, with the oxidation product of said developing agent, a cyan quinoneimine from a phenol coupler in the red sensitive layer, a yellow azomethine from an open chain ketomethylene coupler in the blue sensitive layer and a magenta azomethine from a pyrazoline coupler in the green sensitive layer.
- the developed dye image is complementary in color to the color for which the emulsion layer is sensitized. A combination of these three printing primaries results in production of all the various hues and shades in the finished film or print.
- bleach solutions of the second type include those which contain a halide and an oxidizing agent such as an'alkali ferricyanide, a cupric salt, or an alkali dichromate.
- the colored negative film is identical to the color reversible film with the exception that the former may contain an anti-abrasion layer or clear gelatin over the blue sensitive upper layer.
- the color reversible white opaque material is made in the same manner as the color reversible film and the color negative film with the exception that an opaque white pigment is incorporated into the film base.
- the positive color paper is also identical tothe color reversible film and the color negative film with the exception that a baryta coated paper base is used to hold theemulsion.
- the above-described negative, positive, and reversible materials also differ as to the relative speed and contrast of the individual emulsion layers and of the multilayer color materials. Preparation of photographic multilayer materials containing specific color formers fast to difiusion has been ture pertaining to color photography and is therefore not herein described.
- Example I The final treating bath is prepared as follows:
- Example III Magnesium sulfate (71-1 0) gm.-- 50.0 Formalin ml. 15.0
- reaction product of Example I Deionized water liters 1.0
- Example IV Cadmium bromide gm. 2.0 Deionized water liters 1.0
- the pH of this solution was adjusted to 6.5 by the use of a small amount of a sodium acetate-acetic acid butler solution.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Description
United States Patent PREVENTION OF CYAN DYE FADING IN COLOR DEVELOPED PRINTS AND FILMS James E. Bates, Carl E. Johnson, and Donald E. Tritten, Binghamton,'N.Y., assignors to General Aniline 8: Film Corporation, New York, N.Y., a corporation of Delaware No Drawing, Application January- 10, 1957 1 Serial No. 633,398
4 Claims, (CI. 96-56) The present invention relates to color photography andparticularly to a method and means for inhibiting the fading of cyan dyes in color photographic materials in which color images have been formed by color develop ment with a primary amino developing agent.
It is known that in certain processes of color forming photographic development color images are formed upon development byv the action of the oxidation product of a primary aromatic amino developing agent upon non-dif-- fusing color forming compounds or couplers located in the, emulsion layers. It is likewise known that the resulting. color images are susceptible to discoloration and fading when exposed to adverse conditions such as heat, high humidity, sunlight, or ultraviolet light. A commonly encountered type of color degradation is the loss of cyan density that occurs in color transparencies and prints which manifests itself by an overall reddish'tint in said transparencies and prints. This condition has been attributable to. the effect of moisture on the cyan dye images since the above condition can be accelerated by storing the color films or prints in a high humidity oven. The effect of light apparently plays little or no role in this type of cyan color degradation as the same effect is noticed in the' absence of light.
Although the aforesaid degradation or fading of the cyan layer may be associated with the adverse effects of high humidity, nevertheless some prints and transparencies, color developed as above, have greater resistance to cyan dye fading than others. Subsequent investigations which we initiated, revealed that greater stability to cyan fading was exhibited by the aforesaid color prints and transparencies which had been processed in localities wherein the water supply was. characterized by a hardness factor of over 300.p.p.m. On the other hand, when such color prints and transparencies were processed in areas wherein the water was relatively soft, the aforesaid cyan fading was very severe. It was therefore assumed that a correlation existed between the cyan dye fading and the degree of hardness of the water used for processing. Since water hardness is due to the presence of dissolved salts of magnesium and calcium, it was concluded that these salts contribute to the stabilizing effect of cyan dye fading.
Proceeding from this premise, we tested the effect produced by using a wash water containing water soluble salts of metals similar or analogous to magnesium and calcium, i.e., cadimum. It was found rather surprisingly that these salts, like those of calcium and magnesium, also operated to stabilize the cyan dye image.
It is therefore an object of the present invention to provide a method for preventing the fading and degradation of cyan dyes in colored photographic prints and transparencies, wherein the dyes are formed from oxidized color developer and a phenolic color former containing a long aliphatic chain.
A further object is to provide a composition which will function to prevent cyan dye fading in such color developed prints and transparencies.
Other objects will appear as the description proceeds.
lCQ
2 These objects are accomplished by either treating orbathing the finalcolor developed prints or transparencies in-a bath containing water soluble salts of calcium, magnesium, or cadmium, i.e., their chlorides, acetates, nitrates, bromides, and the like.
Thus, after the complete, processing of multicolor ma! terials containing color formers rendered fast to diffusion by virtue of a longaliphatic. chain, including color development, bleaching, fixing, and washing, and thena final treatment in a bath containing one of the above salts, it was found that the resulting color photograph showed a high resistance, to cyan, dyev fading or discoloration. This protection is, achieved without affecting, in anyway, the original color balance.
The concentration of the water soluble salts employed ranges from 1 to 5 grams per liter when added to the wash water, or from 1, to SO-grams per liter when used in a. final rinse bath. 1
The exact mechanism by which the aforesaid'salts cause inhibition of cyan dye fading is still unknown. It is our belief that the ions of the metals form highly insoluble metal salts or complexes with the cyan dye and thus give a product with much more resistance tothe effects of humidity. However, such an explanation is only theoretical and we do not wish to be bound or held in any man ner thereby.
The following table shows the stabilizing effect on cyan dye images produced as subsequently noted, of treating color prints or transparencies with a final bath contain-J ing, i.e., cadmium bromide.
Percent gain or loss in red absorption:
Deionized water wash :22 Deionized water wash followed by a final rinse bath CdB1' -13 The cyan dye stabilizing bath of the present invention can be used to, process a variety of photographic multicolor materials in which the dyestuff images are proces-= sed with non-diifusing color formers present in the emulsion. Said photographic multicolor materials include, color reversible film, color negative film, color reversible white printing material coated on an opaque base, and color positive printing'material coated on paper. The multilayer color reversible film containing color formers may be prepared by the methods described in U.S.'Patents 2,179,228; 2,179,239; 2,186,849; and 2,220,187, and con sists of an integral tripack emulsion coated on the usual clear film .base. Each of the emulsions is sensitized to one of the primary colors, namely, blue, green, and red. Usually the top layer is blue sensitive. The filter layer, yellow in color and blue absorbing, lies beneath the top layer. Below the said filter layer lies a green sensitive emulsion layer, and below this is a red sensitive emulsion layer. Each of the three emulsion layers contains a dye forming compound fast to diffusion which, during the development of a silver image by an aromatic amino developing agent forms, with the oxidation product of said developing agent, a cyan quinoneimine from a phenol coupler in the red sensitive layer, a yellow azomethine from an open chain ketomethylene coupler in the blue sensitive layer and a magenta azomethine from a pyrazoline coupler in the green sensitive layer. Generally the developed dye image is complementary in color to the color for which the emulsion layer is sensitized. A combination of these three printing primaries results in production of all the various hues and shades in the finished film or print.
After color development, it is necessary to remove the silver which is also formed duiing development. This is accomplished by use of a bleach such as acidified alkali permanganate or alkali dichromate solutions which convert the metallic silver into a water soluble silver salt or by other bleach solutions which transform the metallic silver into a silver salt which is soluble in fixer solutions, particularly sodium thiosulfate solutions. Certain bleach solutions of the second type include those which contain a halide and an oxidizing agent such as an'alkali ferricyanide, a cupric salt, or an alkali dichromate.-
The colored negative film is identical to the color reversible film with the exception that the former may contain an anti-abrasion layer or clear gelatin over the blue sensitive upper layer. The color reversible white opaque material is made in the same manner as the color reversible film and the color negative film with the exception that an opaque white pigment is incorporated into the film base. The positive color paper is also identical tothe color reversible film and the color negative film with the exception that a baryta coated paper base is used to hold theemulsion. The above-described negative, positive, and reversible materials also differ as to the relative speed and contrast of the individual emulsion layers and of the multilayer color materials. Preparation of photographic multilayer materials containing specific color formers fast to difiusion has been ture pertaining to color photography and is therefore not herein described.
The following examples describe in detail the methods forv carrying out the above objects of this invention but is to be understood that they are inserted merely for the purpose of illustration and are not to be construed as limiting the scope of the invention.
Example I The final treating bath is prepared as follows:
Cadmium bromide gm. 1.0 Reaction product of a phenol with ethylene oxide as per U.S.P.
2,213,477 gm. 0.5 Formalin ml. 15.0 Deionized water liters 1.0
Color prints or transparencies are treated for minutes in the above bath and are placed in high humidity ovens. One set was stored for hours at 90 C. and 70% R.H., and 85% R.H. A marked described in the litera- The above treating bath was used in the same manner as given in Example I.
Example III Magnesium sulfate (71-1 0) gm.-- 50.0 Formalin ml. 15.0
reaction product of Example I Deionized water liters 1.0
The same procedure was employed as given in Ex ample 1.
Example IV Cadmium bromide gm. 2.0 Deionized water liters 1.0
The pH of this solution was adjusted to 6.5 by the use of a small amount of a sodium acetate-acetic acid butler solution.
The treatment and testing were carried out as described in Example I.
We claim:
I. In the process of producing stabilized cyan color photographic images in a photographic material comprising a support and at least one light sensitive silver-halide emulsion containing a phenolic color former fast to difwater soluble salt of a metal selected from the class consisting of calcium, magnesium, and cadmium.
2. A process according to claim 1 wherein the said metal salt is a water soluble salt of calcium.
3. A process according to claim 1 wherein the said metal salt is a water soluble salt of magnesium.
4. A process according to claim 1 wherein the said metal salt is a water soluble salt of cadmium.
References Cited in the file of this patent UNITED STATES PATENTS ranges Handbook of Chemistry, 8th edition 1952 pages 784-789, Handbooks Publishers Inc., Sandusky, Ohio.
Claims (1)
1. IN THE PROCESS OF PRODUCING STABILIZED CYAN COLOR PHOTOGRAPHIC IMAGES IN A PHOTOGRAPHIC MATERIAL COMPRISING A SUPPORT AND AT LEAST ONE LIGHT SENSITIVE SILVER-HALIDE EMULSION CONTAINING A PHENOLIC COLOR FORMER FAST TO DIFFUSION CAPABLE OF FORMING, UPON DEVELOPMENT WITH A PRISMARY AMINO DEVELOPER, A CYAN QUINONEIMINE DYE IMAGE BY EXPOSING SAID MULTILAYER MATERIAL, COLOR DEVELOPING BLEACHING, FIXING, AND WASHING THE SAME, THE IMPROVEMENT WHICH CONSISTS OF AVOIDING CYAN DYE FADING BY TREATING THE SAID MATERIAL AFTER THE FINAL WASHING OPERATION WITH A WATER SOLUTION CONTAINING 1 TO 50 GRAMS PER LITER OF A WATER SOLUBLE SALT OF A METAL SELECTED FROM THE CLASS COMSISTING OF CALCIUM, MAGNESIUM, AND CADMIUM.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE563765D BE563765A (en) | 1957-01-10 | ||
| US633398A US2913338A (en) | 1957-01-10 | 1957-01-10 | Prevention of cyan dye fading in color developed prints and films |
| DEG23691A DE1043806B (en) | 1957-01-10 | 1958-01-09 | Process for producing a stable blue image in photographic color developing material |
| GB925/58A GB855629A (en) | 1957-01-10 | 1958-01-09 | Prevention of cyan dye fading in colour developed prints and films |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US633398A US2913338A (en) | 1957-01-10 | 1957-01-10 | Prevention of cyan dye fading in color developed prints and films |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2913338A true US2913338A (en) | 1959-11-17 |
Family
ID=24539473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US633398A Expired - Lifetime US2913338A (en) | 1957-01-10 | 1957-01-10 | Prevention of cyan dye fading in color developed prints and films |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2913338A (en) |
| BE (1) | BE563765A (en) |
| DE (1) | DE1043806B (en) |
| GB (1) | GB855629A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3035914A (en) * | 1957-01-10 | 1962-05-22 | Gen Aniline & Film Corp | Prevention of cyan dye fading in color developed prints and films |
| US3140177A (en) * | 1960-11-10 | 1964-07-07 | Eastman Kodak Co | Processing color photographic materials |
| US3249432A (en) * | 1960-08-22 | 1966-05-03 | Polaroid Corp | Novel photographic processes |
| US3369896A (en) * | 1964-08-03 | 1968-02-20 | Eastman Kodak Co | Final rinse bath for color process |
| US4481268A (en) * | 1981-02-09 | 1984-11-06 | Eastman Kodak Company | Method of forming a photographic dye image |
| EP0158369A2 (en) | 1981-07-21 | 1985-10-16 | Konica Corporation | A method of stabilizing a light-sensitive silver halide color photographic material |
| US4774169A (en) * | 1985-08-06 | 1988-09-27 | Konishiroku Photo Industry Co., Ltd. | Processing solution for developing a silver halide color photographic material and a method of developing the same |
| US5225320A (en) * | 1985-10-01 | 1993-07-06 | Konishiroku Photo Industry Co., Ltd. | Method of processing a silver halide color photosensitive material substantially free of rinsing and a stabilizing solution used therefor |
| JPH0642060B2 (en) | 1985-08-15 | 1994-06-01 | コニカ株式会社 | Silver halide color-color developing solution for photographic light-sensitive materials |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2688546A (en) * | 1952-11-20 | 1954-09-07 | Brown Forman Distillers Corp | Composition for treating photographic film to eliminate hypo |
| US2706687A (en) * | 1953-07-20 | 1955-04-19 | Eastman Kodak Co | Preventing formation of prussian blue stain in color developed photographic prints |
| US2788274A (en) * | 1954-04-14 | 1957-04-09 | Gen Aniline & Film Corp | Process of inhibiting the discoloration of photographic color images |
-
0
- BE BE563765D patent/BE563765A/xx unknown
-
1957
- 1957-01-10 US US633398A patent/US2913338A/en not_active Expired - Lifetime
-
1958
- 1958-01-09 GB GB925/58A patent/GB855629A/en not_active Expired
- 1958-01-09 DE DEG23691A patent/DE1043806B/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2688546A (en) * | 1952-11-20 | 1954-09-07 | Brown Forman Distillers Corp | Composition for treating photographic film to eliminate hypo |
| US2706687A (en) * | 1953-07-20 | 1955-04-19 | Eastman Kodak Co | Preventing formation of prussian blue stain in color developed photographic prints |
| US2788274A (en) * | 1954-04-14 | 1957-04-09 | Gen Aniline & Film Corp | Process of inhibiting the discoloration of photographic color images |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3035914A (en) * | 1957-01-10 | 1962-05-22 | Gen Aniline & Film Corp | Prevention of cyan dye fading in color developed prints and films |
| US3249432A (en) * | 1960-08-22 | 1966-05-03 | Polaroid Corp | Novel photographic processes |
| US3140177A (en) * | 1960-11-10 | 1964-07-07 | Eastman Kodak Co | Processing color photographic materials |
| US3369896A (en) * | 1964-08-03 | 1968-02-20 | Eastman Kodak Co | Final rinse bath for color process |
| US4481268A (en) * | 1981-02-09 | 1984-11-06 | Eastman Kodak Company | Method of forming a photographic dye image |
| EP0158369A2 (en) | 1981-07-21 | 1985-10-16 | Konica Corporation | A method of stabilizing a light-sensitive silver halide color photographic material |
| US4774169A (en) * | 1985-08-06 | 1988-09-27 | Konishiroku Photo Industry Co., Ltd. | Processing solution for developing a silver halide color photographic material and a method of developing the same |
| JPH0642060B2 (en) | 1985-08-15 | 1994-06-01 | コニカ株式会社 | Silver halide color-color developing solution for photographic light-sensitive materials |
| US5225320A (en) * | 1985-10-01 | 1993-07-06 | Konishiroku Photo Industry Co., Ltd. | Method of processing a silver halide color photosensitive material substantially free of rinsing and a stabilizing solution used therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| BE563765A (en) | |
| GB855629A (en) | 1960-12-07 |
| DE1043806B (en) | 1958-11-13 |
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