EP0472007A1 - Agents photographiques à contenu reduit de poussière - Google Patents

Agents photographiques à contenu reduit de poussière Download PDF

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Publication number
EP0472007A1
EP0472007A1 EP91112641A EP91112641A EP0472007A1 EP 0472007 A1 EP0472007 A1 EP 0472007A1 EP 91112641 A EP91112641 A EP 91112641A EP 91112641 A EP91112641 A EP 91112641A EP 0472007 A1 EP0472007 A1 EP 0472007A1
Authority
EP
European Patent Office
Prior art keywords
photographic processing
compound
dust
formula
alkyl
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.)
Granted
Application number
EP91112641A
Other languages
German (de)
English (en)
Other versions
EP0472007B1 (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(A1) "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
Publication of EP0472007B1 publication Critical patent/EP0472007B1/fr
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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 required active ingredients in low concentrations and are therefore prepared by the user himself from water and chemical concentrates as well as, if necessary, other auxiliaries.
  • the concentrates should be dosed as simply as possible and should be largely dust-free. In addition, no unnecessarily high costs should arise 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 1 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 11 are fatty alcohols such as 1-dodecanol or fatty alcohol mixtures, for example a mixture with equal proportions of C 2 and C 4 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”, as well as by swirling air while spraying.
  • the formulations produced in this way are dust-free or low-dust, free-flowing, quick to dissolve, almost indefinitely durable and show no or minimal abrasion under mechanical stress, for example, assembly by means of dosing screws, but this is immediately bound again.
  • 1,000 g of potash are sprayed in an air vortex for 3.5 minutes with 20 g of a substance according to the invention or the specified amount of substance.
  • 1,000 g of potassium disulfite are mixed with 20 g of P 300 in a Lödige mixer for 5 minutes. The distribution is then homogeneous.
  • the color developer CD-4 is mixed with 1% by weight of P 600 (based on the total weight) in an eddy current for 3 minutes.
  • HX Hydroxylammonium sulfate
  • DTPA diethylenetriamine-pentaacetic acid

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)
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
DE4025560A DE4025560A1 (de) 1990-08-11 1990-08-11 Fotochemikalien mit vermindertem staubanteil
DE4025560 1990-08-11

Publications (2)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994011783A1 (fr) * 1992-11-13 1994-05-26 Sun Chemical Corporation Agent solide anti-voile et revelateur solide monocomposant a acces rapide et contraste eleve
EP0638843A2 (fr) * 1993-07-29 1995-02-15 Konica Corporation Agent solide de traitement pour matériau photographique à l'halogénure d'argent sensible à la lumière
US5460937A (en) * 1993-10-20 1995-10-24 Eastman Kodak Company Process for incorporating a hydrophobic compound into an aqueous medium

Families Citing this family (7)

* 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
DE69431702T2 (de) * 1993-08-25 2003-07-31 Konica Corp., Tokio/Tokyo Feste Verarbeitungszusammensetzung für photographisches, lichtempfindliches Silberhalogenidmaterial und diese verwendendes Verarbeitungsverfahren
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
EP0687951B1 (fr) * 1994-06-10 2001-10-10 Konica Corporation Composition sous forme de granulés ou comprimés pour le développement en couleurs
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2314516A1 (de) * 1972-03-25 1973-10-11 Takeda Chemical Industries Ltd Protease enthaltende gemische und verfahren zu ihrer herstellung
US3981732A (en) * 1971-08-19 1976-09-21 Fuji Photo Film Co., Ltd. Granular p-phenylenediamine color developing agent
DE2940156A1 (de) * 1978-10-06 1980-04-17 Ciba Geigy Ag Granulierung von pigmenten nach dem fliessbettverfahren
EP0204372A1 (fr) * 1985-06-07 1986-12-10 Chemco, Inc. Méthode de préparation de bains photographiques concentrés sous forme de pâte, méthode de traitement de tels concentrés pour donner des bains de traitement photographiques prêts à l'emploi, appareil adapté pour un tel traitement et pompe apparetnant à cet appareil
GB2195783A (en) * 1986-10-09 1988-04-13 Du Pont A powdered packaged developer and a process of preparation

Family Cites Families (10)

* 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
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
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
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981732A (en) * 1971-08-19 1976-09-21 Fuji Photo Film Co., Ltd. Granular p-phenylenediamine color developing agent
DE2314516A1 (de) * 1972-03-25 1973-10-11 Takeda Chemical Industries Ltd Protease enthaltende gemische und verfahren zu ihrer herstellung
DE2940156A1 (de) * 1978-10-06 1980-04-17 Ciba Geigy Ag Granulierung von pigmenten nach dem fliessbettverfahren
EP0204372A1 (fr) * 1985-06-07 1986-12-10 Chemco, Inc. Méthode de préparation de bains photographiques concentrés sous forme de pâte, méthode de traitement de tels concentrés pour donner des bains de traitement photographiques prêts à l'emploi, appareil adapté pour un tel traitement et pompe apparetnant à cet appareil
GB2195783A (en) * 1986-10-09 1988-04-13 Du Pont A powdered packaged developer and a process of preparation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994011783A1 (fr) * 1992-11-13 1994-05-26 Sun Chemical Corporation Agent solide anti-voile et revelateur solide monocomposant a acces rapide et contraste eleve
EP0638843A2 (fr) * 1993-07-29 1995-02-15 Konica Corporation Agent solide de traitement pour matériau photographique à l'halogénure d'argent sensible à la lumière
EP0638843A3 (fr) * 1993-07-29 1996-03-06 Konishiroku Photo Ind Agent solide de traitement pour matériau photographique à l'halogénure d'argent sensible à la lumière.
US5460937A (en) * 1993-10-20 1995-10-24 Eastman Kodak Company Process for incorporating a hydrophobic compound into an aqueous medium

Also Published As

Publication number Publication date
DE59108527D1 (de) 1997-03-20
US5258268A (en) 1993-11-02
DE4025560A1 (de) 1992-02-13
JPH04254853A (ja) 1992-09-10
EP0472007B1 (fr) 1997-02-05
JP2904969B2 (ja) 1999-06-14

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