EP0407752B1 - Agent de blanchiment granulé pour la photographie en couleur et sa préparation - Google Patents

Agent de blanchiment granulé pour la photographie en couleur et sa préparation Download PDF

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Publication number
EP0407752B1
EP0407752B1 EP90111255A EP90111255A EP0407752B1 EP 0407752 B1 EP0407752 B1 EP 0407752B1 EP 90111255 A EP90111255 A EP 90111255A EP 90111255 A EP90111255 A EP 90111255A EP 0407752 B1 EP0407752 B1 EP 0407752B1
Authority
EP
European Patent Office
Prior art keywords
iii
granules
iron
colour photographic
granulated
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
Application number
EP90111255A
Other languages
German (de)
English (en)
Other versions
EP0407752A1 (fr
Inventor
Peter Dr. Kühnert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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Filing date
Publication date
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0407752A1 publication Critical patent/EP0407752A1/fr
Application granted granted Critical
Publication of EP0407752B1 publication Critical patent/EP0407752B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/264—Supplying of photographic processing chemicals; Preparation or packaging thereof
    • G03C5/265—Supplying of photographic processing chemicals; Preparation or packaging thereof of powders, granulates, tablets
    • 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

Definitions

  • the present invention relates to a granulated, color photographic bleach and a method for producing such a bleach that can be quickly dissolved.
  • Color photographic bleaching agents usually contain a number of solid, water-soluble constituents, for example the actual bleaching substance, re-halogenating agents, complexing agents, alkali donors and anti-corrosion agents.
  • Suitable formulations of these bleaching agents are powders and liquid concentrates, the latter having become more and more established over the years because they are easier to dose than powders.
  • liquid assemblies are disadvantageous because of the water ballast, which causes undesirable costs.
  • the object of the invention is to provide a solid formulation of a color photographic bleaching agent which is easy to dose and quickly soluble.
  • the invention therefore relates to a color photographic bleaching agent containing an iron (III) complex or an iron (III) complex salt and a rehalogenating agent in the form of granules with an average particle diameter of 150 to 3000 ⁇ m.
  • the granules can contain anticorrosive agents, for example sodium nitrate, complexing agents, e.g. Ethylenediaminetetraacetic acid (EDTA), propylenediaminetetraacetic acid (PDTA), diethylenetriaminepentaacetic acid (DTPA) and nitroacetic acid (NTA), and means for adjusting the desired pH, e.g. Sodium carbonate.
  • anticorrosive agents for example sodium nitrate
  • complexing agents e.g. Ethylenediaminetetraacetic acid (EDTA), propylenediaminetetraacetic acid (PDTA), diethylenetriaminepentaacetic acid (DTPA) and nitroacetic acid (NTA)
  • EDTA Ethylenediaminetetraacetic acid
  • PDTA propylenediaminetetraacetic acid
  • DTPA diethylenetriaminepentaacetic acid
  • NDA nitroacetic acid
  • the Fe (III) complexes or complex salts are the Fe (III) complexes or Fe (III) complex salts of EDTA, PDTA, DTPA and NTA, e.g. the alkali and ammonium complex salts, in particular the Na and NH4 complex salts.
  • Suitable rehalogenating agents are alkali and ammonium halides, e.g. NaBr, KBr, NH4Br and NaCl.
  • the iron (III) complex or the iron (III) complex salt preferably makes up 20 to 50% by weight of the finished granulate; the rehabilitation agent preferably makes up 40 to 70% by weight of the finished granulate.
  • this granulated composition can be prepared by mixing all the solid constituents and grinding them in such a way that the maximum of the particle diameter distribution curve is less than 10 ⁇ m, subjecting the ground particles to powder agglomeration and drying the granules in vacuo.
  • the invention thus also relates to a process for producing a granulated preparation of the solid constituents of a color photographic bleaching agent, characterized in that the solid constituents of the bleaching agent are mixed, ground to a particle size ⁇ 10 »m, then optionally with the addition of a granulating liquid and a binder subjected to a powder agglomeration and dried in vacuo.
  • the granules of the solid components of a color photographic bleach produced in this way are mechanically stable, of uniform grain size, show a high dissolution rate and unlimited shelf life, are dust-free and free-flowing.
  • the solid components are usually comminuted to particle sizes of ⁇ 10 »m by jet milling.
  • the powder agglomeration is preferably carried out in a fluidized bed, where appropriate granulating liquid, for example, is added to the particles to be agglomerated 200 ml of water per kg of powder are added and, if necessary, some binder, for example corn starch.
  • the mixture is milled on an air jet mill until the average particle diameter of the milled product is 5 »m.
  • the regrind is granulated in portions of about 600 grams each on a commercially available fluidized bed granulator (Strea 1 laboratory device from Aeromatic, Bubendorf / Switzerland).
  • the granulate is dust-free, free-flowing and of a yellow-brown color. It dissolves with stirring in water at 25 ° C within about 45 seconds to a clear, dark red solution. For a liter of ready-to-use solution you need 311 grams of granules.
  • the granules correspond exactly to a non-granulated product in their photographic properties.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Detergent Compositions (AREA)
  • Glanulating (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Claims (3)

  1. Agent de blanchiment pour photographie en couleur, contenant, sous forme d'un granulat ayant un diamètre particulaire moyen de 150 à 3000 »m, un complexe de fer-(III) ou un sel de complexe de fer (III) et un agent de réhalogénation.
  2. Agent de blanchiment pour photographie en couleur selon la revendication 1, dans lequel le complexe de fer (III) ou le sel complexe de fer (III) représente 20 à 50 % du poids du granulat terminé et l'agent de réhalogénation représente 40 à 70 % du poids du granulat terminé.
  3. Procédé de préparation d'une composition granulée des constituants solides d'un agent de blanchiment pour photographie en couleur, procédé caractérisé en ce qu'on mélange les constituants solides de l'agent de blanchiment, on les moud jusqu'à une grosseur de particule inférieure à 10 »m, puis, avec addition éventuelle d'un liquide pour granulation et d'un liant, on les soumet à une agglomération de poudre et on les sèche sous vide.
EP90111255A 1989-06-27 1990-06-14 Agent de blanchiment granulé pour la photographie en couleur et sa préparation Expired - Lifetime EP0407752B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3920921 1989-06-27
DE3920921A DE3920921A1 (de) 1989-06-27 1989-06-27 Granuliertes, farbfotografisches bleichmittel und seine herstellung

Publications (2)

Publication Number Publication Date
EP0407752A1 EP0407752A1 (fr) 1991-01-16
EP0407752B1 true EP0407752B1 (fr) 1994-07-20

Family

ID=6383616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90111255A Expired - Lifetime EP0407752B1 (fr) 1989-06-27 1990-06-14 Agent de blanchiment granulé pour la photographie en couleur et sa préparation

Country Status (4)

Country Link
US (1) US5053321A (fr)
EP (1) EP0407752B1 (fr)
JP (1) JPH0339739A (fr)
DE (2) DE3920921A1 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5780211A (en) * 1991-05-01 1998-07-14 Konica Corporation Processing composition in the tablet form for silver halide photographic light-sensitive material
EP0542283A1 (fr) * 1991-11-12 1993-05-19 Konica Corporation Comprimé pour la traitement d'un matériau photographique à l'halogénure d'argent sensible à la lumière
EP0547796A1 (fr) * 1991-12-17 1993-06-23 Konica Corporation Composés chimique sous forme solide utilisé dans la traitement d'un matériau photographique à l'halogénure d'argent sensible à la lumière
JP2843877B2 (ja) * 1992-01-18 1999-01-06 コニカ株式会社 写真用処理剤
JP3084119B2 (ja) * 1992-02-25 2000-09-04 コニカ株式会社 ハロゲン化銀写真感光材料の処理方法
JPH05289248A (ja) * 1992-04-08 1993-11-05 Konica Corp 写真用処理剤
JPH0643604A (ja) * 1992-07-25 1994-02-18 Konica Corp ハロゲン化銀写真感光材料の処理方法
JPH0659404A (ja) * 1992-08-12 1994-03-04 Konica Corp ハロゲン化銀写真感光材料の現像処理方法及び処理剤
US5480768A (en) * 1993-02-17 1996-01-02 Konica Corporation Method for processing exposed silver halide photographic light-sensitive material using a solid processing composition replenisher
EP0667559B1 (fr) * 1994-02-15 2000-06-07 Konica Corporation Composition solide pour le traitement des matériaux d'halogénure d'argent photosensibles pour la photographie en couleurs
JPH07295162A (ja) * 1994-04-28 1995-11-10 Konica Corp ハロゲン化銀写真感光材料用固体処理剤
US5557362A (en) 1994-06-16 1996-09-17 Konica Corporation Silver halide photosensitive material automatic developing apparatus
JPH0869098A (ja) 1994-08-31 1996-03-12 Konica Corp ハロゲン化銀写真感光材料用自動現像機
US5624793A (en) * 1994-11-11 1997-04-29 Konica Corporation Method of manufacturing solid processing composition for silver halide photographic light-sensitive materials
JPH08160588A (ja) 1994-12-06 1996-06-21 Konica Corp ハロゲン化銀写真感光材料用自動現像機
JP3574986B2 (ja) 1996-01-16 2004-10-06 コニカミノルタホールディングス株式会社 ハロゲン化銀写真感光材料用固体処理剤及びハロゲン化銀写真感光材料の処理方法
US5922521A (en) * 1998-03-26 1999-07-13 Eastman Kodak Company Uniformly mixed dry photographic processing composition and method of preparation
US6780383B1 (en) * 2003-02-28 2004-08-24 Eugene Ettlinger System for sterilization of spaces and surfaces
JP5588597B2 (ja) 2007-03-23 2014-09-10 富士フイルム株式会社 導電性材料の製造方法及び製造装置
EP2009977A3 (fr) 2007-05-09 2011-04-27 FUJIFILM Corporation Film protecteur électromagnétique et filtre optique

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843482A (en) * 1956-03-30 1958-07-15 Eastman Kodak Co Photographic bleach composition
NL7402981A (fr) * 1973-03-16 1974-09-18
JPS511425A (en) * 1974-06-18 1976-01-08 Matsushita Electric Ind Co Ltd Azobenzenjudotaino seizohoho
IT1022356B (it) * 1974-09-26 1978-03-20 Veronesi Fiorenzo Compressa di composti chimici par tioclarmente per il trattamento di materiale sensibile per uso fotografico
JPS54133332A (en) * 1978-04-07 1979-10-17 Oriental Photo Ind Co Ltd Preparation of powdered bleaching agent for photograph
DE3325059A1 (de) * 1983-07-12 1985-01-24 Basf Ag, 6700 Ludwigshafen Metallchelatkomplexe enthaltende granulate und verfahren zu ihrer herstellung
JPS62110739A (ja) * 1985-11-06 1987-05-21 Dai Ichi Kogyo Seiyaku Co Ltd 水溶性セルロ−ス誘導体の顆粒化法
DE3723307A1 (de) * 1987-07-15 1989-01-26 Agfa Gevaert Ag Bleichbadkonzentrat
JP2556339B2 (ja) * 1987-09-29 1996-11-20 コニカ株式会社 長期処理安定性を有する写真処理剤及び写真感光材料の処理方法
DE3830023A1 (de) * 1988-09-03 1990-03-15 Agfa Gevaert Ag Granulierter, farbfotografischer entwickler und seine herstellung

Also Published As

Publication number Publication date
DE59006483D1 (de) 1994-08-25
JPH0339739A (ja) 1991-02-20
DE3920921A1 (de) 1991-01-03
US5053321A (en) 1991-10-01
EP0407752A1 (fr) 1991-01-16

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