DE947221C - Process for the simultaneous bleaching and fixing of chromogenically developed color images - Google Patents
Process for the simultaneous bleaching and fixing of chromogenically developed color imagesInfo
- Publication number
- DE947221C DE947221C DEF3113D DEF0003113D DE947221C DE 947221 C DE947221 C DE 947221C DE F3113 D DEF3113 D DE F3113D DE F0003113 D DEF0003113 D DE F0003113D DE 947221 C DE947221 C DE 947221C
- Authority
- DE
- Germany
- Prior art keywords
- color images
- fixing
- developed color
- simultaneous bleaching
- bleaching
- 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 8
- 238000004061 bleaching Methods 0.000 title claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 8
- 239000004332 silver Substances 0.000 claims description 8
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 6
- -1 silver halide Chemical class 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 2
- 150000001491 aromatic compounds Chemical class 0.000 claims 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 6
- 239000007844 bleaching agent Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 3
- 235000019345 sodium thiosulphate Nutrition 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 239000004133 Sodium thiosulphate Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229940044197 ammonium sulfate Drugs 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- NJYFRQQXXXRJHK-UHFFFAOYSA-N (4-aminophenyl) thiocyanate Chemical compound NC1=CC=C(SC#N)C=C1 NJYFRQQXXXRJHK-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- HTKFORQRBXIQHD-UHFFFAOYSA-N allylthiourea Chemical compound NC(=S)NCC=C HTKFORQRBXIQHD-UHFFFAOYSA-N 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 239000001166 ammonium sulphate Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000007795 chemical reaction product Substances 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
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 235000007686 potassium Nutrition 0.000 description 1
- CHLCPTJLUJHDBO-UHFFFAOYSA-M sodium;benzenesulfinate Chemical compound [Na+].[O-]S(=O)C1=CC=CC=C1 CHLCPTJLUJHDBO-UHFFFAOYSA-M 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
Verfahren zum gleichzeitigen Bleichen und Fixieren von chromogen entwickelten Farbbildern Bekanntlich müssen die auf dem Wege der chromogenen Entwicklung hergestellten Farbbilder nach der Entwicklung mit einem Bleichbad behandelt werden, um das entwickelte Silber und das in. der Golbfilterschicht befindliche kolloidale Silber zwecks Entfernung auszubleichen. Als Bleichbad kommen nur wenige Stoffe in Frage" da die meisten der bekannten Oxydationsxnittel die das- farbige Bild aufbauenden Farbstoffe in unerwünschter Weise verändiern. Das für diesen Zweck an sich brauchbare Ferricyankalium hat den Nachteil, d:aß es die Reste des noch in der Bildschicht vorhandenen Entwicklers zu farbigen Körpern oxydiert. Daher ist es bei der Ver, wendung von Ferricyanlca1i@um als Bleichmittel notwendig, den Entwickler vorher durch längeres Waschen restlos aus der Schicht zu entfernen, ein Verfahren., das natürlich sehr zeitraubend ist. Außerdem: ist es bei- Verwendung von Ferricyankalium nicht möglich; das Ausbleichen des Silbers und die Entfernung des Halogensilbers in einem Arbeitsgang durchzuführen, @da, Bülder, welche Ferricyankalium und beispielsweise Natriu.mtthiosulfat als, halogensIlborlösondes Mittel enthalten, bekanntlich nur sehr kurze Zeit haltbar sind.Process for the simultaneous bleaching and fixing of chromogen developed It is well known that color images must have been produced by means of chromogenic development Color images after development are treated with a bleach bath to make the developed one Silver and the colloidal silver in the gold filter layer for removal to bleach. As a bleach bath only a few substances come into question "as most of the known oxidizing agents, the dyes that build up the colored image are undesirable Change way. Potassium ferricyanide, which can be used per se for this purpose, has the Disadvantage, that is, it ate the remains of the developer still present in the image layer oxidized to colored bodies. Therefore, when using Ferricyanlca1i @ um necessary as a bleaching agent, wash the developer completely beforehand to remove from the layer, a procedure which is of course very time consuming. In addition: it is not possible when using potassium ferricyanide; the fading to carry out the silver and the removal of the halogen silver in one operation, @da, Bülder, which ferricyanide potassium and, for example, Natriu.mtthiosulfat as, HalogensIlborlösondes contain agent, known to be only stable for a very short time are.
Erfindungsgemäß lassen sich diese Schwierigkeiten durch Verwendung solcher schwach saurer bzw. ;neutraler oder alkalischer Bäder beseitigen, die neben einem halogensivberlösenden Mittel als schwaches Oxydationsmittel aromatische Verbnrndungen, die zwei oder-mehr Nitrogruppen-im Isienn besitzen, enthalten; diese Verbindungen binden mit,den ;zur Entwicklung verwendeten Substanzen keine farbigen Reaktionsprodukte und greifen die bei :der chromogenen Entwicklung entsttandernen Farbstoffe flicht .an.According to the invention, these difficulties can be solved by using such weakly acidic or; remove neutral or alkaline baths, the aromatic as a weak oxidizing agent in addition to a halogen dissolving agent Compounds which contain two or more nitro groups in the isiene; these Compounds do not bind colored substances with the substances used for development Reaction products and take hold of those that arise in: the chromogenic development Dyes braid.
Die Verwendung schwacher OXydationsmi@tbel in Verbindung mit haliogensilberlösiendem. Mitteln ist zwar .für das Silberfarbbleichverfahrern schon bekennt, jedoch unter M.itwirkunig einer starken Säure. Derartige sitark saure Lösungen kommen. jedoch für die nach d er chromogenen. Entwicklung hergestellten Farbbilder nicht in Frage; da sie. den B;il.d£arbstoff zerstören. In schiwach saureni, neutralen bzw. alkalischen Bädern, die allein für den vorEegenden Zweck verwendet werden können, wirken; aber die- für das S.ilbenfarbbleichverfahren bekannten schwachen Oxydati@onism,ittel fast ausnahmslos zu schwach, so daß die für das. Ausbleichen und Entfernen -des SilberG verwendete Zeit uneTträglich @ausigedehnt werden muß.The use of weak oxidizing agents in connection with silver halide dissolving agents. Means is already acknowledged for the silver color bleaching process, but under A strong acid is involved. Such strongly acidic solutions come. However for those after the chromogenic. Development of produced color images out of the question; since they. destroy the dye. In weakly acidic, neutral or alkaline Baths that can be used solely for the primary purpose work; but the weak oxidation method known for the syllable color bleaching process, ittel almost invariably too weak, so that the. Bleaching and removing -des SilberG time used uneTtrlichen @ausigetetzt must be.
Diese Schwierigkeiten sind durch die gleichzeitige Verwendung der oben angeführten organischen Nitroverbindungen und halogensilberlösenden Mittelbehoben. Als letzterekommenAmmoniüm-oder Natriumthiosulfat, Rhodankalium, Thiosinamin oder ähnliche Stoffe in Frage: Besonders vorteilhaft haben sich Mischungen vonAmmonium-und Natriumthiosulfat mit geringen Mengen von Thioharnstoff erwiesen, wobei der letztere das Ausbleichen des Silbers erheblich beschleunigt. Beispiel i Ein »Agfacolor«-Papier oder ein farbentwickelter »Agfacolor«-Film (»Agfacolo.r« geschütztes Warenzeichen) wird nach dem Belichten und Entwickeln kurz mit Wasser abgespült und in folgendem Bad gleichzeitig gebleicht und fixiert: iooo ccm Wasser, 400 g Ammoniumsulfat krist., io g i, 3-Dinitrobenzol-q.-sulfosäure, 8 g Kaliummetab@isulfat können noch zugegeben werden, um die Abscheidung von Spuren feinverteilten Schwefels zu verhindern. Beispiel 2 In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr, 73@ 672. Ein »Agfacolor«-Bild auf Film oder Papier (»Agfacolor« geschütztes Warenzeichen) wird nach dem Behandeln wie im Beispiel i in einem Bad folgender Zusammensetzung gleichzeitig gebleicht und fixiert: iooo ccm Wasser, Zoo g Natriumthiosulfat krist., 10 9 2q.-Dinitrobenzolsulfosäure; 5 g Thioharnstoff; 12 g benzolsulfinsaures Natrium können noch zugegeben werden, um die Abscheidung von Spuren feinverteilten Schwefels zu werhindern.These difficulties are due to the simultaneous use of the the organic nitro compounds and silver halide dissolving agents listed above have been remedied. As the latter come ammonium or sodium thiosulphate, potassium rhodan, or thiosinamine Similar substances in question: Mixtures of ammonium and Sodium thiosulfate with small amounts of thiourea has been shown to be the latter significantly accelerates the fading of the silver. Example i An "Agfacolor" paper or a color-developed »Agfacolor« film (»Agfacolo.r« protected trademark) is rinsed briefly with water after exposure and development and then in the following Bath bleached and fixed at the same time: 100 ccm of water, 400 g of crystalline ammonium sulfate, io g i, 3-dinitrobenzene-q.-sulfonic acid, 8 g potassium metab @ isulfate can also be added to prevent the deposition of traces of finely divided sulfur. example 2 Publications considered: German Patent No. 73 @ 672. An "Agfacolor" image on film or paper (»Agfacolor« registered trademark) is applied after treatment as in example i, bleached at the same time in a bath of the following composition and fixed: 100 ccm of water, zoo g of crystalline sodium thiosulphate, 10 9 2q.-dinitrobenzenesulphonic acid; 5 grams of thiourea; 12 g of sodium benzenesulfinate can also be added, to prevent the deposition of traces of finely divided sulfur.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF3113D DE947221C (en) | 1944-03-03 | 1944-03-04 | Process for the simultaneous bleaching and fixing of chromogenically developed color images |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF0003113 | 1944-03-03 | ||
| DEF3113D DE947221C (en) | 1944-03-03 | 1944-03-04 | Process for the simultaneous bleaching and fixing of chromogenically developed color images |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE947221C true DE947221C (en) | 1956-08-09 |
Family
ID=25973695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEF3113D Expired DE947221C (en) | 1944-03-03 | 1944-03-04 | Process for the simultaneous bleaching and fixing of chromogenically developed color images |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE947221C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1300020B (en) * | 1963-12-09 | 1969-07-24 | Eastman Kodak Co | Process for developing and fixing color photographic material |
| US7672713B2 (en) * | 2002-06-19 | 2010-03-02 | Infraredx, Inc. | Multi-channel catheter tip |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE735672C (en) * | 1940-01-11 | 1943-05-24 | Kodak Ag | Combined bleaching and fixing bath |
-
1944
- 1944-03-04 DE DEF3113D patent/DE947221C/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE735672C (en) * | 1940-01-11 | 1943-05-24 | Kodak Ag | Combined bleaching and fixing bath |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1300020B (en) * | 1963-12-09 | 1969-07-24 | Eastman Kodak Co | Process for developing and fixing color photographic material |
| US7672713B2 (en) * | 2002-06-19 | 2010-03-02 | Infraredx, Inc. | Multi-channel catheter tip |
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