EP0472007B1 - Agents photographiques à contenu reduit de poussière - Google Patents

Agents photographiques à contenu reduit de poussière Download PDF

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Publication number
EP0472007B1
EP0472007B1 EP91112641A EP91112641A EP0472007B1 EP 0472007 B1 EP0472007 B1 EP 0472007B1 EP 91112641 A EP91112641 A EP 91112641A EP 91112641 A EP91112641 A EP 91112641A EP 0472007 B1 EP0472007 B1 EP 0472007B1
Authority
EP
European Patent Office
Prior art keywords
dust
photographic processing
weight
solids
denotes
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
EP91112641A
Other languages
German (de)
English (en)
Other versions
EP0472007A1 (fr
Inventor
Karl-Heinz Reuter
Manfred Dr. Reichrath
Heinz Dr. Meckl
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6412115&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0472007(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0472007A1 publication Critical patent/EP0472007A1/fr
Application granted granted Critical
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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

Definitions

  • the invention relates to solid-formulated photographic chemicals with a reduced dust content and a process for their production.
  • Photographic processing baths e.g. Developmental, bleaching and fixing baths usually contain the necessary active ingredients in low concentrations and are therefore prepared by the user himself from water and chemical concentrates as well as other aids if necessary.
  • the concentrates should be dosed as simply as possible and should be largely dust-free. In addition, there should be no unnecessarily high costs for packaging and transport.
  • the liquid concentrates which are generally used in practice for the production of ready-to-use photographic baths have the advantage over the previously used, powdered products that no dust development and no solution problems occur.
  • the concentrates have the disadvantages of the high proportion by weight and volume of water, as well as difficulties in disposing of the bulky packaging.
  • the object of the invention is therefore to find means with which photographic processing chemicals formulated in solid form can be produced, the dust content of which is reduced, and which are therefore dust-free or at least low-dust.
  • the products manufactured in this way should also dissolve in water in a short time.
  • Formulations that are free of or low in solids with a grain size ⁇ 0.1 mm are referred to as dust-free or low-dust.
  • the amount is determined by conventional sieve analysis; it should preferably be below 2% by weight, in particular below 1% by weight.
  • Suitable compounds of formula I are ethylene glycol, homologues of ethylene glycol and polyethylene glycols with average molecular weights from 200 to 10,000 and propylene glycol and polypropylene glycols with average molecular weights from 200 to 10,000, preferably polyethylene glycols with average molecular weights from 300 to 1,000, e.g. Polyethylene glycol 300, 400, 600 and 1,000; Short designation P 300, P 400, P 600, P 1000.
  • Suitable compounds of the formula II are fatty alcohols such as 1-dodecanol or fatty alcohol mixtures, for example a mixture with equal proportions of C 12 and C 14 fatty alcohol.
  • Suitable photographic processing chemicals are black and white developers, color developers, bleaching agents, fixing agents, bleach-fixing agents and stabilizers.
  • these photographic processing chemicals contain the usual active substances and auxiliaries. Details can be found in the exemplary embodiments.
  • the process for the preparation of the dedusted products according to the invention is characterized in that active ingredients and auxiliaries of a photographic processing bath are mixed together with the addition of at least one compound of the formula (I) until homogeneous distribution.
  • active ingredients and auxiliaries of a photographic processing bath are mixed together with the addition of at least one compound of the formula (I) until homogeneous distribution.
  • This can be done by mechanical mixing in a conventional "Lödige mixer”, “Nauta mixer” or “tumble dryer”, and by air turbulence with simultaneous spraying.
  • the so Formulations produced are dust-free or low-dust, free-flowing, quick to dissolve, almost indefinitely durable and show no or minimal abrasion when subjected to mechanical stress, for example, preparation by means of dosing screws, but this is immediately bound again.

Landscapes

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

Claims (3)

  1. Produits chimiques pour le traitement photographique, formulés sous forme solide, contenant les substances actives et auxiliaires requises, caractérisés en ce qu'ils contiennent en outre au moins un composé de formule (I)

            HO-(-R-O-)n-H     (I)

    dans laquelle
    R   représente un groupe alkyle en C2-C4 et
    n   représente 1-200,
    ou au moins un composé de formule

            R1-OH     (II)

    dans laquelle
    R1   représente un groupe alkyle en C10-C18,
    ou au moins un polymère hydrosoluble de la série de l'acide polystyrènesulfonique ou de l'alcool polyvinylique, ou encore un mélange d'au moins deux des composés mentionnés ci-dessus,
    en une quantité de 0,5 à 100 g/kg de substance solide.
  2. Produits chimiques pour le traitement photographique formulés sous forme solide selon la revendication 1, caractérisés en ce qu'ils présentent moins de 2% en poids de fractions de substances solides présentant une granulométrie < 0,1 mm.
  3. Produits chimiques pour le traitement photographique formulés sous forme solide selon la revendication 1, caractérisés en ce qu'ils contiennent au moins un polyéthylèneglycol possédant une masse molaire moyenne de 300 à 1000.
EP91112641A 1990-08-11 1991-07-27 Agents photographiques à contenu reduit de poussière Expired - Lifetime EP0472007B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4025560 1990-08-11
DE4025560A DE4025560A1 (de) 1990-08-11 1990-08-11 Fotochemikalien mit vermindertem staubanteil

Publications (2)

Publication Number Publication Date
EP0472007A1 EP0472007A1 (fr) 1992-02-26
EP0472007B1 true EP0472007B1 (fr) 1997-02-05

Family

ID=6412115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112641A Expired - Lifetime EP0472007B1 (fr) 1990-08-11 1991-07-27 Agents photographiques à contenu reduit de poussière

Country Status (4)

Country Link
US (1) US5258268A (fr)
EP (1) EP0472007B1 (fr)
JP (1) JP2904969B2 (fr)
DE (2) DE4025560A1 (fr)

Families Citing this family (10)

* 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
US5272045A (en) * 1992-11-13 1993-12-21 Sun Chemical Corporation Water soluble antifoggant for powder developer solutions
US5409805A (en) * 1993-07-29 1995-04-25 Konica Corporation Solid processing agent for silver halide photographic light-sensitive materials
DE69431702T2 (de) * 1993-08-25 2003-07-31 Konica Corp., Tokio/Tokyo Feste Verarbeitungszusammensetzung für photographisches, lichtempfindliches Silberhalogenidmaterial und diese verwendendes Verarbeitungsverfahren
US5460937A (en) * 1993-10-20 1995-10-24 Eastman Kodak Company Process for incorporating a hydrophobic compound into an aqueous medium
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
DE69523096T2 (de) * 1994-06-10 2002-06-06 Konica Corp., Tokio/Tokyo Farbentwicklungszusammensetzung in Granulat- oder Tablettenform
JPH0990573A (ja) * 1995-09-28 1997-04-04 Konica Corp ハロゲン化銀写真感光材料の処理用固体現像補充剤及び現像処理方法
US5900355A (en) * 1998-03-26 1999-05-04 Eastman Kodak Company Method of making uniformly mixed dry photographic processing composition using hot melt binder
ATE290233T1 (de) * 1999-12-27 2005-03-15 Fuji Photo Film Co Ltd Festes granuliertes verarbeitungsagens für photographisches silberhalogenidmaterial und dessen herstellungsverfahren

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238043A (en) * 1961-07-06 1966-03-01 Levy Marilyn Viscous processing solution
JPS511425B2 (fr) * 1971-08-19 1976-01-17
US3981732A (en) * 1971-08-19 1976-09-21 Fuji Photo Film Co., Ltd. Granular p-phenylenediamine color developing agent
JPS5423994B2 (fr) * 1972-03-25 1979-08-17
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
US4277288A (en) * 1978-10-06 1981-07-07 Ciba-Geigy Corporation Fluidized granulation of pigments using organic granulating assistant
JPS5770532A (en) * 1980-10-20 1982-05-01 Ricoh Co Ltd Developer for dry diazo copying
US4414307A (en) * 1982-02-24 1983-11-08 Eastman Kodak Company Method and composition for preparation of photographic color developing solutions
NL8501659A (nl) * 1985-06-07 1987-01-02 Chemco Inc Werkwijze voor het bereiden van fotobad-concentraten in brijvorm, werkwijze ter verwerking van dergelijke concentraten tot gebruiksklare fotografische verwerkingsbaden, een voor deze verwerking geschikte inrichting alsmede een tot deze inrichting behorende pompopstelling.
US4816384A (en) * 1986-10-09 1989-03-28 E. I. Du Pont De Nemours And Company Powdered packaged developer
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
IT1229224B (it) * 1989-04-03 1991-07-26 Minnesota Mining & Mfg Composizione concentrata di sviluppo fotografico e metodo per prepararla.
JPH087456B2 (ja) * 1989-09-26 1996-01-29 富士ゼロックス株式会社 乾式現像剤
DE4009310A1 (de) * 1990-03-23 1991-09-26 Agfa Gevaert Ag Granulierte fotochemikalien

Also Published As

Publication number Publication date
DE4025560A1 (de) 1992-02-13
DE59108527D1 (de) 1997-03-20
JPH04254853A (ja) 1992-09-10
EP0472007A1 (fr) 1992-02-26
US5258268A (en) 1993-11-02
JP2904969B2 (ja) 1999-06-14

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