US3597199A - Process for controlling the development of reversible color film - Google Patents
Process for controlling the development of reversible color film Download PDFInfo
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- US3597199A US3597199A US873115A US3597199DA US3597199A US 3597199 A US3597199 A US 3597199A US 873115 A US873115 A US 873115A US 3597199D A US3597199D A US 3597199DA US 3597199 A US3597199 A US 3597199A
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- 238000011161 development Methods 0.000 title abstract description 19
- 238000000034 method Methods 0.000 title abstract description 14
- 230000002441 reversible effect Effects 0.000 title abstract description 10
- -1 AMINOMERCAPTO Chemical class 0.000 abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 6
- 239000001257 hydrogen Substances 0.000 abstract description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical group [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 2
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 21
- 230000018109 developmental process Effects 0.000 description 15
- 150000001875 compounds Chemical class 0.000 description 8
- 229910052709 silver Inorganic materials 0.000 description 7
- 239000004332 silver Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 5
- GGZHVNZHFYCSEV-UHFFFAOYSA-N 1-Phenyl-5-mercaptotetrazole Chemical compound SC1=NN=NN1C1=CC=CC=C1 GGZHVNZHFYCSEV-UHFFFAOYSA-N 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 238000007792 addition Methods 0.000 description 4
- 125000004429 atom Chemical group 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 4
- CARFETJZUQORNQ-UHFFFAOYSA-N 1h-pyrrole-2-thiol Chemical class SC1=CC=CN1 CARFETJZUQORNQ-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-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
- 229940101006 anhydrous sodium sulfite Drugs 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 125000000623 heterocyclic group Chemical group 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- JAAIPIWKKXCNOC-UHFFFAOYSA-N 1h-tetrazol-1-ium-5-thiolate Chemical compound SC1=NN=NN1 JAAIPIWKKXCNOC-UHFFFAOYSA-N 0.000 description 1
- UGWULZWUXSCWPX-UHFFFAOYSA-N 2-sulfanylideneimidazolidin-4-one Chemical compound O=C1CNC(=S)N1 UGWULZWUXSCWPX-UHFFFAOYSA-N 0.000 description 1
- QLAGGJISLHPJHC-UHFFFAOYSA-N 4-sulfanyl-1h-benzimidazole-2-sulfonic acid Chemical compound C1=CC(S)=C2NC(S(=O)(=O)O)=NC2=C1 QLAGGJISLHPJHC-UHFFFAOYSA-N 0.000 description 1
- QAZFSCRQNWGQDE-UHFFFAOYSA-N 5,5-dimethyl-2-sulfanylidene-1,3-thiazolidin-4-one Chemical compound CC1(C)SC(=S)NC1=O QAZFSCRQNWGQDE-UHFFFAOYSA-N 0.000 description 1
- DRSHXJFUUPIBHX-UHFFFAOYSA-N COc1ccc(cc1)N1N=CC2C=NC(Nc3cc(OC)c(OC)c(OCCCN4CCN(C)CC4)c3)=NC12 Chemical compound COc1ccc(cc1)N1N=CC2C=NC(Nc3cc(OC)c(OC)c(OCCCN4CCN(C)CC4)c3)=NC12 DRSHXJFUUPIBHX-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 241000483002 Euproctis similis Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- DICSILCBSRQDJI-UHFFFAOYSA-N N-(1H-pyrrol-2-yl)thiohydroxylamine Chemical compound SNC=1NC=CC1 DICSILCBSRQDJI-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 240000006365 Vitis vinifera Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- NLFBCYMMUAKCPC-KQQUZDAGSA-N ethyl (e)-3-[3-amino-2-cyano-1-[(e)-3-ethoxy-3-oxoprop-1-enyl]sulfanyl-3-oxoprop-1-enyl]sulfanylprop-2-enoate Chemical compound CCOC(=O)\C=C\SC(=C(C#N)C(N)=O)S\C=C\C(=O)OCC NLFBCYMMUAKCPC-KQQUZDAGSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229940100890 silver compound Drugs 0.000 description 1
- 150000003379 silver compounds Chemical class 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
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 230000003245 working effect Effects 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
- G03C7/407—Development processes or agents therefor
- G03C7/413—Developers
Definitions
- R is hydrogen or aryl and Y is an atom or atom grouping necessary to complete a 5 or 6 membered ring, or its corresponding tautomer.
- This invention relates to a process for controlling the development of multi-layered reversible color film having incorporated color components.
- Color film according to the principal of chromogenic development consists essentially of 3 layers arranged one over the other, sensitized for the spectral ranges of blue, green and red and in which during color development dyes complementary in color to that of the sensitivity of the particular layers are developed. There is thereby obtained a color negative from which through a suitable copying process, a color positive is prepared. Using reversible color film, it has already become possible in a single process to obtain a finished positive.
- This process consists essentially of the following steps:
- the first developer contains as developing agent for black-white, for instance, metol-hydroquinone.
- the developing agent of the color developer is a derivative of pphenylenediamine.
- DBP 968,447 Another procedure that has already been proposed is the addition of mercaptoazoles (DAS 1,003,581).
- DAS 1,158,838 Another procedure that has already been proposed is the addition of mercaptoazoles (DAS 1,003,581).
- Pat. 2,685,516 describes a combination of both of the aforesaid processes, i.e. to simultaneously add potassium iodide and mercapto compounds whereby it was found that both additions produce a much stronger effect would have been anticipated, i.e., a synergism (DAS 1,158,838).
- the activity of the iodide and also of the mercapto compounds is to be traced to the fact that they are absorbed by the silver halide, thereby forming difficulty soluble silver compounds in the topmost layer and resulting in the slowing down of the development in that layer.
- Potassium iodide, as well as the aforementioned mercapto compounds have, however, detrimental effects so that their use as additives for accomplishing the above-described purposes is strongly limited.
- the detrimental effeot of the iodides lies in that they act on all 3 layers thereby lowering the total sensitivity of the film.
- the mercapto compounds for instance, mercapto-tetrazole, -thiazole, -oxazole and -benzthiazole, thiohydantoin and the like and in particular 1-phenyl-5-mercapto-tetra- Zole have a strong tendency to form hazy or foggy color.
- the other mercaptoazoles have been found to be as unsatisfactory as phenylmercaptotetrazole.
- the effect of most of the mercaptoazoles is too limited to prevent the over-development of the upper layer.
- a further disadvantage observed for the known compounds is that in their presence, the stability of the stock solutions is reduced. This is, for instance, the case with the otherwise well-working 5,5-dimethylrhodanine (DAS 1,158,838).
- the object of the invention is to provide substances for controlling the reversible color development not having the disadvantages of the known materials.
- R is hydrogen or aryl and Y is an atom or atom grouping necessary to complete a 5 or 6 membered ring which avoids the disadvantages of the art and results in considerable improvements in the development of reversible color film.
- the following examples demonstrate the advantages associated with the use of the compounds as proposed in the instant application when added in suitable amounts generally 0.5 to 5 mg./l., preferably 1 to 2 m-g./l. to the first developer which is a known metol-hydroquinone or pyrazolidine-hydroquinone developer.
- the sensitivity of the underlying layers is not at all or only very slightly infiuenced.
- the compounds of the invention do not produce any color hazing.
- their control effect is enhanced synergistically by the presence of potassium iodide.
- aminomercapto derivatives in accordance with the invention allows for the preparation of stable storage solutions for instance in alcohol or aqueous alkali. Also the activity of the developer remains constant and does not vary. In general, the amounts of the aminomercapto derivatives which are to be added is very small in order to ensure that their effect is limited to the topmost layer. The amounts which are most advantageously used depend on the strength of the desired regulation and can be established in each case by experimentation.
- EXAMPLE A three layer reversible color film strip in which the topmost layer is blue sensitive and which contains a color coupler for yellow was exposed behind a gray step tablet and thereafter subjected to the following color reversal processing:
- the first developer had the following composition:
- the color developer had the following composition:
- a second film strip was treated in the same manner and in the reversal developing process with the difference that the first developer contained 1 mg./l. of mercaptoaminoazole of Formula I.
- the two strips were compared by measurements in a density meter using red, green and blue filters, it was observed that the second strip undoubtedly contained more yellow.
- the density of the other colors in the strip were not influenced by the differences in the first developer composition. This established that by the addition of compound I, only the sensitivity of the topmost layer was decreased. Further it could be observed that the clarity of the highlights is not in anywise influenced by the addition.
- aminomercapto derivative is 1-pheny1-5-arnino-3-mercapto-1,2,4-triazole.
- aminomercapto derivative is 4-oxy-6-amino2-mercaptopyrimidine.
- said first developer additionally contains potassium iodide an amount of 5-50 mg./l.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
PROCESS FOR CONTROLLING THE DEVELOPMENT OF MULTILAYER REVERSIBLE COLOR FILM WHICH HAS COMPONENTS INCORPORATED THEREIN CHARACTERIZED IN THAT THE FIRST DEVELOPER CONTAINS AMINOMERCAPTO DERIVATIVE HAVING 1 HETEROCYCLIC RING HAVING THE FOLLOWING FORMULA:
S=C<(-N(-R)-C(=NH)-Y-NH-)
WHEREIN R IS A HYDROGEN OR ARYL AND Y IS AN ATOM OR ATOM GROUPING NECESSARY TO COMPLETE A 5 OR 6 MEMBERED RING, OR ITS CORRESPONDING TAUTOMER.
S=C<(-N(-R)-C(=NH)-Y-NH-)
WHEREIN R IS A HYDROGEN OR ARYL AND Y IS AN ATOM OR ATOM GROUPING NECESSARY TO COMPLETE A 5 OR 6 MEMBERED RING, OR ITS CORRESPONDING TAUTOMER.
Description
United States Patent O 3,597,199 PROCESS FOR CONTROLLING THE DEVELOP- MENT OF REVERSIBLE COLOR FILM Hans Glockner, Pullbach, Karl Kuifner and Herbert Stark, Munich, and Hans Gotthard, Leverkusen, Germany, assignors to Agfa-Gevaert Aktiengesellschaft, Leverkusen, Germany No Drawing. Filed Oct. 31, 1969, Ser. No. 873,115 Int. Cl. G03c 5/59, 7/00, 7/16 U.S. Cl. 96-22 7 Claims ABSTRACT OF THE DISCLOSURE Process for controlling the development of multilayer reversible color film which has components incorporated therein characterized in that the first developer contains an aminomercapto derivative having 1 heterocyclic ring having the following formula:
wherein R is hydrogen or aryl and Y is an atom or atom grouping necessary to complete a 5 or 6 membered ring, or its corresponding tautomer.
This invention relates to a process for controlling the development of multi-layered reversible color film having incorporated color components.
Color film according to the principal of chromogenic development consists essentially of 3 layers arranged one over the other, sensitized for the spectral ranges of blue, green and red and in which during color development dyes complementary in color to that of the sensitivity of the particular layers are developed. There is thereby obtained a color negative from which through a suitable copying process, a color positive is prepared. Using reversible color film, it has already become possible in a single process to obtain a finished positive.
This process consists essentially of the following steps:
(1) Development of a negative silver picture. In this case the first developer contains as developing agent for black-white, for instance, metol-hydroquinone.
(2) Development of a positive silver picture from the residual silver halide and simultaneously developing a positive color picture by the reaction of the developer oxidation product and a stored component. The developing agent of the color developer is a derivative of pphenylenediamine.
(3) Bleaching of all of the developed silver.
In color reversal development, it is often difiicult to maintain the process constant throughout, that is so that all 3 layers are always uniformly developed. Here it depends far-reachingly on obtaining the right color synchronization in the developing picture. This gives rise to the necessity of controlling the processing. One of the frequently encountered difiiculties is the phenomenon that the topmost layer, in general, the blue sensitive layer, which provides the yellow picture is developed too quickly. The reason for this lies in the swelling of Cir 3,597,199 Patented Aug. 3, 1971 ice the layers, in the diffusion of the developer chemicals, in the exhaustion of the developer as well as in the work ing of silver solvent medium, which results in the production of pure white in the first developer.
It is already known to slow down the over-development of the topmost layer or even of the top two layers. An agent heretofore used for the first developer has been small amounts of potassium iodide (DBP 968,447). Another procedure that has already been proposed is the addition of mercaptoazoles (DAS 1,003,581). Pat. 2,685,516 describes a combination of both of the aforesaid processes, i.e. to simultaneously add potassium iodide and mercapto compounds whereby it was found that both additions produce a much stronger effect would have been anticipated, i.e., a synergism (DAS 1,158,838).
The activity of the iodide and also of the mercapto compounds is to be traced to the fact that they are absorbed by the silver halide, thereby forming difficulty soluble silver compounds in the topmost layer and resulting in the slowing down of the development in that layer. Potassium iodide, as well as the aforementioned mercapto compounds have, however, detrimental effects so that their use as additives for accomplishing the above-described purposes is strongly limited. The detrimental effeot of the iodides lies in that they act on all 3 layers thereby lowering the total sensitivity of the film. The mercapto compounds, for instance, mercapto-tetrazole, -thiazole, -oxazole and -benzthiazole, thiohydantoin and the like and in particular 1-phenyl-5-mercapto-tetra- Zole have a strong tendency to form hazy or foggy color. This has been mentioned in the literature, for instance, in U.S. Pat. 2,725,290. The other mercaptoazoles have been found to be as unsatisfactory as phenylmercaptotetrazole. In addition the effect of most of the mercaptoazoles is too limited to prevent the over-development of the upper layer. A further disadvantage observed for the known compounds is that in their presence, the stability of the stock solutions is reduced. This is, for instance, the case with the otherwise well-working 5,5-dimethylrhodanine (DAS 1,158,838).
The object of the invention is to provide substances for controlling the reversible color development not having the disadvantages of the known materials.
In accordance with the invention, it has now been found that incorporating into the first developer an aminomercapto derivative constituting a one ring N-containing heterocyclic compound of the following formula or a corresponding tautomer thereof:
wherein R is hydrogen or aryl and Y is an atom or atom grouping necessary to complete a 5 or 6 membered ring which avoids the disadvantages of the art and results in considerable improvements in the development of reversible color film. Preferably Y is member selected from the group consisting of NR wherein R designates hydrogen or aryl and HC=CR' wherein R designates hydroxy or methyl.
N N H l-phenyl-5-an1ino-B-mercapto-1,2,4-triazole or its tautometers 4-oxy-6-amino-Z-mercaptopyrimidine HNIIIH C=NH III
or its tautometers 4-phenyl-5-amino-3-mercapto-1,2,4-triazo1e These compounds can be prepared by methods known from the literature. Compound I (which has been incorrectly designed in the literature as l-phenyl-3-amino-5- mercapto-1,2,4-triazole) is described and known from From, Baurnhauer, Annalen der Chernie 361, p. 336; compound II from Traube, Annalen der Chernie 331, p. 71 and German Patent 156,055 and Compound III by Arndt, Milde, Tschenscher, Chemisohe Berichte 55 pp. 344 and 354.
The following examples demonstrate the advantages associated with the use of the compounds as proposed in the instant application when added in suitable amounts generally 0.5 to 5 mg./l., preferably 1 to 2 m-g./l. to the first developer which is a known metol-hydroquinone or pyrazolidine-hydroquinone developer. The sensitivity of the underlying layers is not at all or only very slightly infiuenced. The compounds of the invention do not produce any color hazing. In addition their control effect is enhanced synergistically by the presence of potassium iodide.
The use of the aminomercapto derivatives in accordance with the invention allows for the preparation of stable storage solutions for instance in alcohol or aqueous alkali. Also the activity of the developer remains constant and does not vary. In general, the amounts of the aminomercapto derivatives which are to be added is very small in order to ensure that their effect is limited to the topmost layer. The amounts which are most advantageously used depend on the strength of the desired regulation and can be established in each case by experimentation.
The following example is given for the purpose of illustrating the invention and is not to be construed as in any way limiting the scope thereof.
EXAMPLE A three layer reversible color film strip in which the topmost layer is blue sensitive and which contains a color coupler for yellow was exposed behind a gray step tablet and thereafter subjected to the following color reversal processing:
Min. First development l2 Rinse 1 Fixing Bath (acetic acid/Na-acetate at pH=4.2) 5 Wash 5 Reversal exposure 1 Color development l5 Fixing bath 5 Wash 5 Bleaching (K-ferricyanide, K-bromi'de, pl-l=5.3) 8 Wash 5 Fixing (pH=5.0) 5 Final wash l0 Stabilizing (formalin and wetting agent) 1 Temperature of the baths, 24 C.
The first developer had the following composition:
Water ml 800 Sodiumhexametaphosphate g 2.0 p-N-monomethylamino phenolsemisulfate do 6.0 Anhydrous sodium sulfite g 50.0 Anhydrous soda g 35.0 Hydroquinone g 6.0 Sodium Thiocyanate g 15 Potassium bromide g 1.0 Potassium iodide mg 20 Water ml i000 pH value: 10 .1101.
The color developer had the following composition:
Water ml 800 Sodiurnhexametaphosphate g 2.0 Anhydrous sodium sulfite g 5.0 Trilsodium phosphate g 40.0 N,N-diethyl-ptoluylenediamine hydrochloride g 3.0 Potassium bromide g 0.5 Potassium iodide g 10.0 Ethylenediamine 50% ml 6.0
A second film strip was treated in the same manner and in the reversal developing process with the difference that the first developer contained 1 mg./l. of mercaptoaminoazole of Formula I. When the two strips were compared by measurements in a density meter using red, green and blue filters, it was observed that the second strip undoubtedly contained more yellow. The density of the other colors in the strip were not influenced by the differences in the first developer composition. This established that by the addition of compound I, only the sensitivity of the topmost layer was decreased. Further it could be observed that the clarity of the highlights is not in anywise influenced by the addition.
When the same experiment was repeated with 4 mg. phenylmercaptotetrazole in the first developer in place of compound I, there was obtained a color picture which against a 0 test had a 2 DIN lower sensitivity. If the amount of phenylmercaptotetrazole is lowered, the desired color control in the top layer is not observed. 0n the other hand, by an increase in the concentration, color fogging is produced. A similarly unsatisfactory result is obtained with the known mercaptobenzimidazole sulfonic acid ,(DAS 1,158,838). There substantially results in each case an unacceptable color fogging. When however compounds II and III in accordance with the invention are used excellent results are obtained, with the optimal amounts of about 2 mg./l. thereof in the first developer.
We claim:
1. In the process of color development for controlling the development of multi-layer reversible color film containing incorporated color couplers the improvement of incorporating into the first silver halide developer an aminomercapto derivative constituting a one ring heterocyclic of the following formula or a tautomer thereof:
tt S=C C=NH wherein R is hydrogen or aryl and Y is a member selected from the group consisting of -NR wherein R is hydrogen or aryl and HC=CR wherein R is hydroxy or methyl, necessary to complete a 5 or 6 membered ring.
2. Improvement according to claim 1 wherein said aminomercapto derivative is 1-pheny1-5-arnino-3-mercapto-1,2,4-triazole.
3. Improvement according to claim 1 wherein said aminomercapto derivative is 4-oxy-6-amino2-mercaptopyrimidine.
4. Improvement according to claim 1 wherein said first developer additionally contains potassium iodide an amount of 5-50 mg./l.
5. Improvement according to claim 1 wherein said References Cited UNITED STATES PATENTS 3/1964 Hunt 9622 8/1965 Schwan 96566 NORMAN G. TORCHIN, Primary Examiner M. F. KELLEY, Assistant Examiner US. Cl. X.R. 9655, 59, 66
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US87311569A | 1969-10-31 | 1969-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3597199A true US3597199A (en) | 1971-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US873115A Expired - Lifetime US3597199A (en) | 1969-10-31 | 1969-10-31 | Process for controlling the development of reversible color film |
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| US (1) | US3597199A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2389161A1 (en) * | 1977-04-30 | 1978-11-24 | Agfa Gevaert Ag | VEIL-PRODUCING COMPOUNDS FOR THE PHOTOGRAPHIC INVERSION PROCESS |
| EP0124795A2 (en) | 1983-04-11 | 1984-11-14 | Fuji Photo Film Co., Ltd. | Silver halide photographic emulsion |
| US5131173A (en) * | 1987-05-15 | 1992-07-21 | Adidas Ag | Outsole for sports shoes |
| US5590134A (en) * | 1990-06-27 | 1996-12-31 | Texas Instruments Incorporated | Test circuits and method for integrated circuit having memory and non-memory circuits by accumulating bits of a particular logic state |
| US6013423A (en) * | 1991-08-22 | 2000-01-11 | Fuji Photo Film Co., Ltd. | Developing solution for silver halide photographic material and method for processing silver halide photographic material by using the same |
| WO2012035314A1 (en) | 2010-09-17 | 2012-03-22 | Fujifilm Manufacturing Europe Bv | Photographic paper |
| WO2021213762A1 (en) | 2020-04-24 | 2021-10-28 | Fujifilm Manufacturing Europe Bv | Photographic paper |
-
1969
- 1969-10-31 US US873115A patent/US3597199A/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2389161A1 (en) * | 1977-04-30 | 1978-11-24 | Agfa Gevaert Ag | VEIL-PRODUCING COMPOUNDS FOR THE PHOTOGRAPHIC INVERSION PROCESS |
| US4184875A (en) * | 1977-04-30 | 1980-01-22 | Agfa-Gevaert, A.G. | Photographic reversal process |
| EP0124795A2 (en) | 1983-04-11 | 1984-11-14 | Fuji Photo Film Co., Ltd. | Silver halide photographic emulsion |
| US5131173A (en) * | 1987-05-15 | 1992-07-21 | Adidas Ag | Outsole for sports shoes |
| US5590134A (en) * | 1990-06-27 | 1996-12-31 | Texas Instruments Incorporated | Test circuits and method for integrated circuit having memory and non-memory circuits by accumulating bits of a particular logic state |
| US6013423A (en) * | 1991-08-22 | 2000-01-11 | Fuji Photo Film Co., Ltd. | Developing solution for silver halide photographic material and method for processing silver halide photographic material by using the same |
| WO2012035314A1 (en) | 2010-09-17 | 2012-03-22 | Fujifilm Manufacturing Europe Bv | Photographic paper |
| WO2021213762A1 (en) | 2020-04-24 | 2021-10-28 | Fujifilm Manufacturing Europe Bv | Photographic paper |
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