DE966410C - Process for bleach-fixing silver photographic images - Google Patents
Process for bleach-fixing silver photographic imagesInfo
- Publication number
- DE966410C DE966410C DE1953A0018011 DEA0018011A DE966410C DE 966410 C DE966410 C DE 966410C DE 1953A0018011 DE1953A0018011 DE 1953A0018011 DE A0018011 A DEA0018011 A DE A0018011A DE 966410 C DE966410 C DE 966410C
- Authority
- DE
- Germany
- Prior art keywords
- bleach
- photographic images
- hooc
- cooh
- acid
- 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
Links
- 238000000034 method Methods 0.000 title claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title description 7
- 229910052709 silver Inorganic materials 0.000 title description 7
- 239000004332 silver Substances 0.000 title description 7
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 4
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims 1
- 150000007513 acids Chemical class 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 10
- 239000007795 chemical reaction product Substances 0.000 description 9
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 6
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- 239000005639 Lauric acid Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ALSTYHKOOCGGFT-KTKRTIGZSA-N (9Z)-octadecen-1-ol Chemical compound CCCCCCCC\C=C/CCCCCCCCO ALSTYHKOOCGGFT-KTKRTIGZSA-N 0.000 description 1
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- SUVZGLSQFGNBQI-UHFFFAOYSA-N 2,5-bis(sulfanyl)hexanedioic acid Chemical compound OC(=O)C(S)CCC(S)C(O)=O SUVZGLSQFGNBQI-UHFFFAOYSA-N 0.000 description 1
- DLLMHEDYJQACRM-UHFFFAOYSA-N 2-(carboxymethyldisulfanyl)acetic acid Chemical compound OC(=O)CSSCC(O)=O DLLMHEDYJQACRM-UHFFFAOYSA-N 0.000 description 1
- UOMQUZPKALKDCA-UHFFFAOYSA-K 2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxymethyl)amino]acetate;iron(3+) Chemical compound [Fe+3].OC(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UOMQUZPKALKDCA-UHFFFAOYSA-K 0.000 description 1
- ZIUZDRMIXJKUNY-UHFFFAOYSA-N 3-[2-carboxyethyl(ethyl)amino]propanoic acid Chemical compound OC(=O)CCN(CC)CCC(O)=O ZIUZDRMIXJKUNY-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- QEVGZEDELICMKH-UHFFFAOYSA-N Diglycolic acid Chemical compound OC(=O)COCC(O)=O QEVGZEDELICMKH-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 241000124033 Salix Species 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- XYXNTHIYBIDHGM-UHFFFAOYSA-N ammonium thiosulfate Chemical compound [NH4+].[NH4+].[O-]S([O-])(=O)=S XYXNTHIYBIDHGM-UHFFFAOYSA-N 0.000 description 1
- 125000003435 aroyl group Chemical group 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- UKFXDFUAPNAMPJ-UHFFFAOYSA-N ethylmalonic acid Chemical compound CCC(C(O)=O)C(O)=O UKFXDFUAPNAMPJ-UHFFFAOYSA-N 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 235000011087 fumaric acid Nutrition 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 229940055577 oleyl alcohol Drugs 0.000 description 1
- XMLQWXUVTXCDDL-UHFFFAOYSA-N oleyl alcohol Natural products CCCCCCC=CCCCCCCCCCCO XMLQWXUVTXCDDL-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 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
- 239000000126 substance Substances 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 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
- G03C7/42—Bleach-fixing or agents therefor ; Desilvering processes
- G03C7/421—Additives other than bleaching or fixing agents
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Description
AUSGEGEBEN AM !.AUGUST 1957ISSUE ON AUGUST 1957
A18011 IVa/5? bA18011 IVa / 5? b
Aus der deutschen Patentschrift 866 605 ist ein Verfahren zum Bleichfixieren von photographischen Silberbildern bekannt, nach welchem als Bleichfixierbäder Lösungen verwendet werden, die neben bekannten Fixiermitteln für Halogensilber Komplexsalze des dreiwertigen Eisens mit organischen Säuren der folgenden allgemeinen Formeln enthalten:From the German patent specification 866 605 is a method known for the bleach-fixing of silver photographic images, after which solutions are used as bleach-fixing baths are used, in addition to known fixatives for halogen silver, complex salts of the trivalent Iron with organic acids contain the following general formulas:
HOOC-R1-X-R2-COOH,HOOC-R 1 -XR 2 -COOH,
HOOC-R4-N-R6-COOHHOOC-R 4 -NR 6 -COOH
I \I \
in welchen X = — C —, O, S, N — R3 ist und R1, R2 1 / in which X = - C -, O, S, N - R 3 and R 1 , R 2 1 /
und R3 Kohlenwasserstoffreste bedeuten, die ihrerseits wieder substituiert sein können, wobei R3 auch für H stehen kann, und in welchen R4, R6 und R6 bivalente Kohlenwasserstoffreste bedeuten, die ihrerseits wieder substituiert sein können. Geeignete organische Säuren sind insbesondere die Äthylendiamintetraessigsäure bzw. die Nitrilitriessigsäure, ferner Malonsäure, Äthylmalonsäure, Weinsäure, Äpfelsäure, Fumarsäure, Diglykolsäure, Äthyliminodipropionsäure, Äthylendithioglykolsäure und Dithioglykolsäure. Diese Bleichfixierbäder zeichnen sich durch eine hohe Beständigkeit aus und werden insbesondere zur Herstellung von Mehrfarbenbildern nach dem Verfahren der farbigen Entwicklung verwendet. Jedoch zeigen diese Bäder den Nachteil, daß sie die Silberbilder an den Stellen höchster Dichte nicht immer vollkommen auszubleichen vermögen.and R 3 denote hydrocarbon radicals which in turn can be substituted again, where R 3 can also represent H, and in which R 4 , R 6 and R 6 denote divalent hydrocarbon radicals which in turn can be substituted again. Suitable organic acids are in particular ethylenediaminetetraacetic acid or nitrilitriacetic acid, also malonic acid, ethylmalonic acid, tartaric acid, malic acid, fumaric acid, diglycolic acid, ethyliminodipropionic acid, ethylenedithioglycolic acid and dithioglycolic acid. These bleach-fix baths are distinguished by their high resistance and are used in particular for the production of multicolor images by the color development process. However, these baths have the disadvantage that they are not always able to completely bleach the silver images at the points of highest density.
Es wurde nun gefunden, daß man die Wirksamkeit dieser Bleichfixierbäder ohne Beeinträchtigung ihrerIt has now been found that the effectiveness of these bleach-fix baths can be achieved without impairing them
709 611/26709 611/26
Haltbarkeit verbessern kann, indem man ihnen Polyäthylenoxyd und/oder dessen Derivate zusetzt. Verwendet weiden hierfür wasserlösliche Polyäthylenoxyde, wie sie z. B. den allgemeinen FormelnCan improve durability by adding polyethylene oxide and / or its derivatives. Used willow for this water-soluble polyethylene oxides, as z. B. the general formulas
entsprechen.correspond.
In diesen Formeln steht R1 für Wasserstoff, einen nicht substituierten oder substituierten Alkyl-, Aryl-, Aralkyl-, Acyl-, Aroyl- oder heterocyclischen Rest; R2 und R3 für R1 oder — (CH2 · CH2 In these formulas, R 1 represents hydrogen, an unsubstituted or substituted alkyl, aryl, aralkyl, acyl, aroyl or heterocyclic radical; R 2 and R 3 for R 1 or - (CH 2 • CH 2
wobeiwhereby
2
R2 und R3 gleiche oder verschiedene Substituenten 2
R 2 and R 3 are identical or different substituents
ao sein können; R4 für Wasserstoff oder einen zum Veräthern oder Verestern einer —■ OH-Gruppe geeigneten Substituenten.ao can be; R 4 represents hydrogen or a substituent suitable for etherifying or esterifying a - ■ OH group.
Als Beispiel für die vorgenannten wasserlöslichen Polyäthylenoxyde, die das Bleichvermögen von Bleichfixierbädern erhöhen, seien folgende angeführt: Polyäthylenoxyde, bestehend aus 10 bis 120 Mol Äthylenoxyd; Umsetzungsprodukte von Fettalkoholen, z. B. Oleylalkohol mit 60 bis 100 Mol Äthylenoxyd; Umsetzungsprodukte von Laurinsäure mit 10 bis 20 Mol Äthylenoxyd; Umsetzungsprodukte des Trimethylolpropans mit Äthylenoxyd, die ein durchschnittliches Molekulargewicht von 4000 aufweisen; Umsetzungsprodukte des Ammoniaks mit 20 bis 30 Mol Äthylenoxyd; Umsetzungsprodukte des Dimethylamins mit 50 bis 70 Mol Äthylenoxyd.As an example of the aforementioned water-soluble polyethylene oxides, which have the bleaching power of bleach-fix baths the following are listed: polyethylene oxides, consisting of 10 to 120 moles of ethylene oxide; Reaction products of fatty alcohols, e.g. B. Oleyl alcohol with 60 to 100 moles of ethylene oxide; Reaction products of lauric acid with 10 to 20 mol Ethylene oxide; Reaction products of trimethylolpropane with ethylene oxide, which are an average Have a molecular weight of 4,000; Reaction products of ammonia with 20 to 30 moles of ethylene oxide; Reaction products of dimethylamine with 50 to 70 moles of ethylene oxide.
In Gegenwart dieser Substanzen geht das Silber der photographischen Schicht leichter in Lösung, und es gelingt damit, alle in der" Praxis vorkommenden Silberbilder mit beständigen Bleichfixierbädern zu bleichen und zu fixieren, ohne daß an den Stellen hoher Dichte nichtgelöstes Silber zurückbleibt.In the presence of these substances, the silver of the photographic layer dissolves more easily, and so does it thus succeeds in bleaching all silver images occurring in the "practice" with permanent bleach-fix baths and to fix it without leaving undissolved silver in the high density areas.
Die wasserlöslichen Polyäthylenoxyde können dem Bleichfixierbad beispielsweise in Mengen von 1 bis 10 g pro Liter zugesetzt werden.The water-soluble polyethylene oxides can be added to the bleach-fix bath, for example, in amounts of 1 to 10 g can be added per liter.
Beispiel χExample χ
Ein zur Herstellung von farbigen photographischen Bildern nach dem Verfahren der farbigen Entwicklung bestimmtes Mehrschichtenmaterial wird nach der Belichtung in üblicher Weise in einem Farbentwickler entwickelt und gewässert. Anschließend wird dieses Material in einem Bleichfixierbad der folgenden Zusammensetzung behandelt: 2,6 g Tetranatriumsalz derOne for producing color photographic images by the color development process Certain multilayer material becomes after exposure in the usual way in a color developer developed and watered. Then this material is placed in a bleach-fix bath of the following composition treated: 2.6 g of tetrasodium salt of
Äthylendiamintetraessigsäure, 2,4 g Soda, 1,5 g Ferrichlorid krist., 1,3 g Natriumsulfit sin., 20 g Natriumthiosulfat krist., 0,5 g des Umsetzungsproduktes von 50 bis 70 Mol Äthylenoxyd mit 1 Mol Dimethylamin, 50 g Wasser.Ethylenediaminetetraacetic acid, 2.4 g soda, 1.5 g ferric chloride crystall., 1.3 g of sodium sulfite sin., 20 g of crystalline sodium thiosulfate., 0.5 g of the reaction product of 50 to 70 moles of ethylene oxide with 1 mole of dimethylamine, 50 g of water.
Ein zur Herstellung von farbigen photographischen Bildern nach dem Verfahren der farbigen Entwicklung bestimmtes Mehrschichtenmaterial wird nach der Belichtung in einem Farbentwickler entwickelt und gewässert. Anschließend wird dieses Material in einem Bleichfixierbad der folgenden Zusammensetzungen behandelt: 40 g Ammoniumsalz der komplexen Eisen (Ill)-äthylendiamintetraessigsäure (vgl. Zeitschrift für anorganische Chemie, 251, [1943], S. 290), 120 g Amrnoniurnthiosulfat, 10 g Natriumsulfit sicc, 1 g des Umsetzungsproduktes von Laurinsäure mit 10 bis 20 Mol Äthylenoxyd.One for producing color photographic images by the color development process After exposure, certain multilayer material is developed in a color developer and washed with water. This material is then treated in a bleach-fix bath with the following compositions: 40 g ammonium salt of the complex iron (III) ethylenediaminetetraacetic acid (see journal for inorganic chemistry, 251, [1943], p. 290), 120 g Ammonium thiosulphate, 10 g sodium sulphite sicc, 1 g of the reaction product of lauric acid with 10 to 20 moles of ethylene oxide.
Zur Herstellung von farbenphotographischen Bildern wird entsprechend Beispiel 2 gearbeitet; nur wird an Stelle des Umsetzungsproduktes von Laurinsäure mit Äthylenoxyd das Äthylenoxydumsetzungsprodukt des Trimethylolpropans des durchschnittlichen Molekulargewichts 4000 in Mengen von 1 bis 5 g verwandt.Example 2 is used to produce color photographic images; only instead of the reaction product of lauric acid with ethylene oxide, the ethylene oxide reaction product of trimethylolpropane with an average molecular weight of 4000 in amounts of 1 to 5 g related.
HOOC-R4-N-R6-COOHHOOC-R 4 -NR 6 -COOH
Rß R ß
Claims (1)
USA.-Patentschrift Nr. 2441389;
britische Patentschriften Nr. 592 676, 600 058.Considered publications:
U.S. Patent No. 2441389;
British Patent Nos. 592 676, 600 058.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE528764D BE528764A (en) | 1953-05-13 | ||
| DE1953A0018011 DE966410C (en) | 1953-05-13 | 1953-05-13 | Process for bleach-fixing silver photographic images |
| CH329757D CH329757A (en) | 1953-05-13 | 1954-04-29 | Method of bleach-fixing photographic images |
| GB1394154A GB746567A (en) | 1953-05-13 | 1954-05-12 | Colour photographic processing |
| FR1100559D FR1100559A (en) | 1953-05-13 | 1954-05-12 | Process for bleaching and fixing photographic silver images |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1953A0018011 DE966410C (en) | 1953-05-13 | 1953-05-13 | Process for bleach-fixing silver photographic images |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE966410C true DE966410C (en) | 1957-08-01 |
Family
ID=6924040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1953A0018011 Expired DE966410C (en) | 1953-05-13 | 1953-05-13 | Process for bleach-fixing silver photographic images |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE528764A (en) |
| CH (1) | CH329757A (en) |
| DE (1) | DE966410C (en) |
| FR (1) | FR1100559A (en) |
| GB (1) | GB746567A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1183373B (en) * | 1962-03-05 | 1964-12-10 | Agfa Ag | Photographic bleach bath containing no fixatives |
| US3241966A (en) * | 1960-06-14 | 1966-03-22 | Agfa Ag | Bleach fixing of photographic silver images |
| EP0313083A2 (en) | 1987-10-22 | 1989-04-26 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
| EP0317983A2 (en) | 1987-11-27 | 1989-05-31 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
| EP0320939A2 (en) | 1987-12-15 | 1989-06-21 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
| DE3939755A1 (en) * | 1989-12-01 | 1991-06-06 | Agfa Gevaert Ag | BLEACH |
| DE3939756A1 (en) * | 1989-12-01 | 1991-06-06 | Agfa Gevaert Ag | Bleach baths for processing silver halide photographic materials - contg. ferric iron complex with biodegradable nitrilo mono:acetic acid di:carboxylic acid complex former |
| EP0435334A2 (en) | 1989-12-29 | 1991-07-03 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material containing yellow colored cyan coupler |
| EP0440195A2 (en) | 1990-01-31 | 1991-08-07 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
| EP0476327A1 (en) | 1990-08-20 | 1992-03-25 | Fuji Photo Film Co., Ltd. | Data-retainable photographic film product and process for producing color print |
| EP0562476A1 (en) | 1992-03-19 | 1993-09-29 | Fuji Photo Film Co., Ltd. | A silver halide photographic emulsion and a photographic light-sensitive material |
| EP0563985A1 (en) | 1992-04-03 | 1993-10-06 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
| EP0724194A1 (en) | 1995-01-30 | 1996-07-31 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2373080A1 (en) * | 1977-06-01 | 1978-06-30 | Agfa Gevaert Nv | BITE-BLEACHING LIQUID |
| DE2748430A1 (en) * | 1977-10-28 | 1979-05-03 | Agfa Gevaert Ag | PHOTOGRAPHIC BLEACHING COMPOSITIONS WITH BLADE ACCELERATING COMPOUNDS |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB592676A (en) * | 1944-04-20 | 1947-09-25 | Du Pont | Improvements in light-sensitive photographic elements |
| GB600058A (en) * | 1945-01-10 | 1948-03-30 | Du Pont | Improvements in or relating to light-sensitive colloid silver halide photographic elements |
| US2441389A (en) * | 1946-12-12 | 1948-05-11 | Du Pont | Silver halide emulsions sensitized by mixtures of high polyalkylene glycols and low polyhydric alcohols |
-
0
- BE BE528764D patent/BE528764A/xx unknown
-
1953
- 1953-05-13 DE DE1953A0018011 patent/DE966410C/en not_active Expired
-
1954
- 1954-04-29 CH CH329757D patent/CH329757A/en unknown
- 1954-05-12 FR FR1100559D patent/FR1100559A/en not_active Expired
- 1954-05-12 GB GB1394154A patent/GB746567A/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB592676A (en) * | 1944-04-20 | 1947-09-25 | Du Pont | Improvements in light-sensitive photographic elements |
| GB600058A (en) * | 1945-01-10 | 1948-03-30 | Du Pont | Improvements in or relating to light-sensitive colloid silver halide photographic elements |
| US2441389A (en) * | 1946-12-12 | 1948-05-11 | Du Pont | Silver halide emulsions sensitized by mixtures of high polyalkylene glycols and low polyhydric alcohols |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3241966A (en) * | 1960-06-14 | 1966-03-22 | Agfa Ag | Bleach fixing of photographic silver images |
| DE1183373B (en) * | 1962-03-05 | 1964-12-10 | Agfa Ag | Photographic bleach bath containing no fixatives |
| EP0313083A2 (en) | 1987-10-22 | 1989-04-26 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
| EP0317983A2 (en) | 1987-11-27 | 1989-05-31 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
| EP0320939A2 (en) | 1987-12-15 | 1989-06-21 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
| DE3939756A1 (en) * | 1989-12-01 | 1991-06-06 | Agfa Gevaert Ag | Bleach baths for processing silver halide photographic materials - contg. ferric iron complex with biodegradable nitrilo mono:acetic acid di:carboxylic acid complex former |
| DE3939755A1 (en) * | 1989-12-01 | 1991-06-06 | Agfa Gevaert Ag | BLEACH |
| EP0435334A2 (en) | 1989-12-29 | 1991-07-03 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material containing yellow colored cyan coupler |
| EP0440195A2 (en) | 1990-01-31 | 1991-08-07 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
| EP0476327A1 (en) | 1990-08-20 | 1992-03-25 | Fuji Photo Film Co., Ltd. | Data-retainable photographic film product and process for producing color print |
| EP0562476A1 (en) | 1992-03-19 | 1993-09-29 | Fuji Photo Film Co., Ltd. | A silver halide photographic emulsion and a photographic light-sensitive material |
| EP0563985A1 (en) | 1992-04-03 | 1993-10-06 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
| EP0724194A1 (en) | 1995-01-30 | 1996-07-31 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
Also Published As
| Publication number | Publication date |
|---|---|
| BE528764A (en) | |
| CH329757A (en) | 1958-05-15 |
| FR1100559A (en) | 1955-09-21 |
| GB746567A (en) | 1956-03-14 |
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