EP0472007B1 - Photographic chemicals with reduced dust fraction - Google Patents

Photographic chemicals with reduced dust fraction Download PDF

Info

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)
French (fr)
Other versions
EP0472007A1 (en
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
Family has litigation
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/en
Application granted granted Critical
Publication of EP0472007B1 publication Critical patent/EP0472007B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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)

Description

Die Erfindung betrifft in fester Form formulierte Fotochemikalien mit vermindertem Staubanteil und ein Verfahren zu ihrer Herstellung.The invention relates to solid-formulated photographic chemicals with a reduced dust content and a process for their production.

Fotografische Verarbeitungsbäder, z.B. Entwicklungs-, Bleich- und Fixierbäder enthalten die erforderlichen Wirkstoffe meist in geringer Konzentration und werden daher vom Benutzer aus Wasser und Chemikalienkonzentraten sowie gegebenenfalls weiteren Hilfsmitteln selbst angesetzt.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.

Die Konzentrate sollen möglichst einfach zu dosieren und weitgehend staubfrei sein. Außerdem sollen für Verpackung und Transport keine unnötig hohen Kosten entstehen.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.

Die in der Praxis allgemein üblichen Flüssigkonzentrate zur Herstellung gebrauchsfertiger fotografischer Bäder besitzen gegenüber den früher verwendeten, pulverförmig konfektionierten Produkten den Vorteil, daß keine Staubentwicklung und keine Lösungsprobleme auftreten. Die Konzentrate besitzen die Nachteile des hohen Gewichts- und Volumenanteils des Wassers, sowie Entsorgungsschwierigkeiten der unhandlichen Packmittel.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.

Gemäß DE-OS 37 33 861 sprüh- oder gefriergetrocknete Produkte, die diese Nachteile vermeiden sollen, zeigen jedoch eine hohe Staubentwicklung.According to DE-OS 37 33 861 spray-dried or freeze-dried products which are intended to avoid these disadvantages, however, show a high level of dust.

Aufgabe der Erfindung ist daher, Mittel zu finden, mit denen in fester Form formulierte fotografische Verarbeitungschemikalien hergestellt werden können, deren Staubanteil vermindert ist, die also staubfrei oder zumindest staubarm sind. Die so hergestellten Produkte sollen sich darüber hinaus in kurzer Zeit in Wasser lösen.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.

Es wurde nun gefunden, daß durch geringe Zusätze einer hydrophilen organischen Verbindung zu den festen Bestandteilen fotografischer Verarbeitungsbäder die gestellte Aufgabe gelöst werden kann.It has now been found that the object can be achieved by small additions of a hydrophilic organic compound to the solid components of photographic processing baths.

Als staubfrei bzw. staubarm werden solche Formulierungen bezeichnet, die frei von oder arm an Feststoffanteilen einer Korngröße <0,1 mm sind. Die Menge wird durch übliche Siebanalyse festgestellt; sie soll vorzugsweise unter 2 Gew.-%, insbesondere unter 1 Gew.-%, liegen.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.

Gegenstand der Erfindung sind daher in fester Form formulierte fotografische Verarbeitungschemikalien, enthaltend die erforderlichen Wirk- und Hilfsstoffe, dadurch gekennzeichnet, daß sie zusätzlich wenigstens eine Verbindung der Formel (I),

Figure imgb0001

R
C2-C4-Alkyl und
n
1 - 200 bedeuten,
worin oder wenigstens eine Verbindung der Formel,

        R1- OH     (II)

worin
R1
C10-C18-Alkyl bedeutet,
  • oder wenigstens ein wasserlösliches Polymeres aus der Reihe Polystyrolsulfonsäure und Polyvinylalkohol oder ein Gemisch wenigstens zweier vorgenannter Verbindungen,
  • in einer Menge von 0,5 bis 100 g/kg Feststoff, vorzugsweise von 5 bis 20 g/kg Feststoff, enthalten.
The invention therefore relates to photographic processing chemicals formulated in solid form, containing the necessary active ingredients and auxiliaries, characterized in that they additionally contain at least one compound of the formula (I),
Figure imgb0001
R
C 2 -C 4 alkyl and
n
1 - 200 mean
in which or at least one compound of the formula

R 1 - OH (II)

wherein
R 1
Is C 10 -C 18 alkyl,
  • or at least one water-soluble polymer from the series polystyrene sulfonic acid and polyvinyl alcohol or a mixture of at least two aforementioned compounds,
  • in an amount of 0.5 to 100 g / kg solid, preferably from 5 to 20 g / kg solid.

Geeignete Verbindungen der Formel I sind Ethylenglykol, Homologe des Ethylenglykols und Polyethylenglykole mit mittleren Molmassen von 200 bis 10.000 sowie Propylenglykol und Polypropylenglykole mit mittleren Molmassen von 200 bis 10.000, vorzugsweise Polyethylenglykole mit mittleren Molmassen von 300 bis 1.000, z.B. Polyethylenglykol 300, 400, 600 und 1.000; Kurzbezeichnung P 300, P 400, P 600, P 1000.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.

Geeignete Verbindungen der Formel II sind Fettalkohole wie 1-Dodekanol oder Fettalkoholgemische, z.B. ein Gemisch mit gleichen Anteilen C12- und C14-Fettalkohol.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.

Geeignete fotografische Verarbeitungschemikalien sind Schwarz-Weiß-Entwickler, Farbentwickler, Bleichmittel, Fixiermittel, Bleichfixiermittel und Stabilisiermittel.Suitable photographic processing chemicals are black and white developers, color developers, bleaching agents, fixing agents, bleach-fixing agents and stabilizers.

Diese fotografischen Verarbeitungschemikalien enthalten neben dem erfindungsgemäßen Zusatz die üblichen Wirk- und Hilfsstoffe. Einzelheiten dazu sind den Ausführungsbeispielen zu entnehmen.In addition to the additive according to the invention, these photographic processing chemicals contain the usual active substances and auxiliaries. Details can be found in the exemplary embodiments.

Das Verfahren zur Herstellung der erfindungsgemäßen entstaubten Produkte ist dadurch gekennzeichnet, daß man Wirk- und Hilfsstoffe eines fotografischen Verarbeitungsbades zusammen unter Zusatz wenigstens einer Verbindung der Formel (I) bis zur homogenen Verteilung mischt. Dies kann durch mechanisches Mischen in einem herkömmlichen "Lödige-Mischer", "Nauta-Mischer" oder "Taumeltrockner", sowie durch Luftverwirbelung unter gleichzeitigem Aufsprühen geschehen. Die so hergestellten Formulierungen sind staubfrei bzw. staubarm, rieselfähig, schnell löslich, nahezu unbegrenzt haltbar und zeigen bei mechanischer Beanspruchung, z.B. Konfektionierung mittels Dosierschnecken, keinen oder minimalen Abrieb, der aber sofort wieder gebunden wird.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. 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.

Es ist möglich und manchmal erforderlich, die einzelnen Bestandteile eines fotografischen Verarbeitungsbades getrennt nach dem erfindungsgemäßen Verfahren zu behandeln, dann miteinander zu mischen oder bis zur Ansetzung des Verarbeitungsbades getrennt zu halten; z.B. werden für ein farbfotografisches Entwicklungsbad Entwicklersubstanz, Alkalispender und Oxidationsschutzmittel getrennt behandelt und erst bei Ansatz der Entwicklerlösung vereinigt.Die übrigen Zusätze wie Kalkschutzmittel, Schwermetallkomplexbildner, Nariumsulfit und Alkalihalogenid können gemeinsam mit einem oder mehreren essentiellen Bestandteilen gemischt und behandelt werden.It is possible and sometimes necessary to treat the individual components of a photographic processing bath separately according to the process of the invention, then to mix them together or to keep them separate until the processing bath is prepared; For example, developer substance, alkali dispenser and anti-oxidant are treated separately for a color photographic development bath and only combined when the developer solution is added.

Beispiel 1 (Staubbindung von Pottasche)Example 1 (Dust binding of potash)

1.000 g Pottasche werden im Luftwirbelstrom 3,5 min mit 20 g einer erfindungsgemäßen Substanz oder der angegebenen Menge an Substanz besprüht. Substanz Ethylenglykol Dipropylenglykol P 300 P 400 P 600 Staubanteil vorher 14,7 14,7 14,7 14,7 14,7 Staubanteil nachher (in Gew.-%) 11,2 10,9 3,0 0,6 0,04 Substanz Substanzmenge Fettalkoholgemisch 60ml 10 gew.-%ige wäßr. Polystyrolsulfonsäure 60 ml 7,5 gew.-%ige wäßr. Polyvinylalkohl 70ml Staubanteil vorher 14,7 14,7 14,7 Staubanteil nachher (in Gew.-%) 0,1 0,8 3,0 1,000 g of potash are sprayed with 20 g of a substance according to the invention or the specified amount of substance in the air vortex flow for 3.5 min. substance Ethylene glycol Dipropylene glycol P 300 P 400 P 600 Proportion of dust beforehand 14.7 14.7 14.7 14.7 14.7 Dust content afterwards (in% by weight) 11.2 10.9 3.0 0.6 0.04 Substance quantity of substance Fatty alcohol mixture 60ml 10 wt .-% aq. Polystyrene sulfonic acid 60 ml 7.5 wt .-% aq. Polyvinyl alcohol 70ml Proportion of dust beforehand 14.7 14.7 14.7 Dust content afterwards (in% by weight) 0.1 0.8 3.0

Beispiel 2 (Stabilisierbadregenerator)Example 2 (stabilizing bath regenerator)

Folgende Chemikalien werden mit 2 g P 600 im Wirbelstrom während 3 min besprüht: Natriumdisulfit 20 g Natriumbenzoat 10 g Di-Natriumsalz der 1-Hydroxy-ethan-1,1-diphosphonsäure 43 g Natriumhexametaphosphat 20 g Kaliumhydrogensulfat 4 g Staubanteil vorher: 45,9 Gew.-% Staubanteil nachher: 1,3 Gew.-%. The following chemicals are sprayed with 2 g P 600 in an eddy current for 3 min: Sodium disulfite 20 g Sodium benzoate 10 g Disodium salt of 1-hydroxy-ethane-1,1-diphosphonic acid 43 g Sodium hexametaphosphate 20 g Potassium hydrogen sulfate 4 g Dust fraction before: 45.9% by weight Afterwards: 1.3% by weight.

Beispiel 3 (Kaliumdisulfit)Example 3 (Potassium Disulfite)

1.000 g Kaliumdisulfit werden mit 20 g P 300 in einem Lödige-Mischer 5 min vermischt. Die Verteilung ist danach homogen. Staubanteil vorher: 23,7 Gew.-% Staubanteil nachher: 4,7 Gew.-%. 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. Dust fraction before: 23.7% by weight Afterwards: 4.7% by weight.

Beispiel 4 (Bleichfixierbadregenerator)Example 4 (bleach-fix bath regenerator)

Folgende Chemikalien werden mit 0,5 Gew.-% P 600 (bezogen auf Gesamtfeststoff) in einem Taumeltrockner 5 min vermischt:The following chemicals are mixed with 0.5% by weight of P 600 (based on total solids) in a tumble dryer for 5 minutes:

AmmoniumthiosulfatAmmonium thiosulfate 750 g750 g NatriumdisulfitSodium disulfite 88 g88 g NatriumsulfitSodium sulfite 63 g63 g Natrium-Eisen-EDTASodium iron EDTA 657 g657 g EDTA-SäureEDTA acid 8 g8 g

Staubanteil vorher:Dust fraction before: 2,4 Gew.-%2.4% by weight Staubanteil nachher:Afterwards: 0,01 Gew.-%.0.01% by weight.

Beispiel 5 (Filmentwicklerregenerator)Example 5 (film developer regenerator)


a) Alkaliteil
Folgende Chemikalien werden mit 2 Gew.-% P 600 (bezogen auf Gesamtfeststoff) im Wirbelstrom 3 min vermischt.

Figure imgb0002
Figure imgb0003
Staubanteil vorher: 13 % Staubanteil nachher: 0,8 %
b) Entwicklerteil
Der Farbentwickler CD-4 wird mit 1 Gew.-% P 600 (bezogen auf Gesamtgewicht) im Wirbelstrom 3 min vermischt.
Staubanteil vorher: 1,2 % Staubanteil nachher: 0,0 %
c) Hydroxylammoniumsulfat (HX)-Diethylentriamin-pentaessigsäure (DTPA)-Gemisch
Folgende Substanzen werden im Wirbelstrom mit 1 Gew.-% P 600 (bezogen auf Gesamtgewicht) 3 min vermischt.
DTPA 280 g HX 260 g
Staubanteil vorher: 3,0 % Staubanteil nachher: 0,0 %.
a) Alkali part
The following chemicals are mixed with 2% by weight of P 600 (based on total solids) in an eddy current for 3 min.
Figure imgb0002
Figure imgb0003
Dust fraction before: 13% Afterwards: 0.8%
b) developer part
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.
Dust fraction before: 1.2% Afterwards: 0.0%
c) Hydroxylammonium sulfate (HX) -diethylenetriamine-pentaacetic acid (DTPA) mixture
The following substances are mixed in an eddy current with 1% by weight of P 600 (based on total weight) for 3 minutes.
DTPA 280 g HX 260 g
Dust fraction before: 3.0% Afterwards: 0.0%.

Claims (3)

  1. Photographic processing chemicals formulated as solids, containing the necessary active constituents and auxiliary substances, characterised in that they contain in addition at least one compound corresponding to the formula (I)

            HO -( - R - O - )n- H     (I)

    wherein
    R   denotes C2-C4 alkyl and
    n   denotes 1 to 200,
    or at least one compound corresponding to the formula

            R1 - OH     (II),

    wherein
    R1   denotes C10-C18 alkyl,
    or at least one water-soluble polymer selected from polystyrenesulphonic acid or polyvinyl alcohol or a mixture of at least two of the above-mentioned compounds,
    in a quantity of from 0.5 to 100 g/kg of solids.
  2. Photographic processing chemicals formulated as solids according to claim 1, characterised in that they contain less than 2 wt.% of solid constituents having a particle size of <0.1 mm.
  3. Photographic processing chemicals formulated as solids according to claim 1, characterised in that they contain at least one polyethylene glycol having an average molar mass of from 300 to 1000.
EP91112641A 1990-08-11 1991-07-27 Photographic chemicals with reduced dust fraction Expired - Lifetime EP0472007B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4025560 1990-08-11
DE4025560A DE4025560A1 (en) 1990-08-11 1990-08-11 PHOTO CHEMICALS WITH REDUCED STAUBANT

Publications (2)

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

Family

ID=6412115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112641A Expired - Lifetime EP0472007B1 (en) 1990-08-11 1991-07-27 Photographic chemicals with reduced dust fraction

Country Status (4)

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

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 (en) * 1993-08-25 2003-07-31 Konishiroku Photo Ind Solid processing composition for silver halide photographic light-sensitive material and processing method using the same
US5460937A (en) * 1993-10-20 1995-10-24 Eastman Kodak Company Process for incorporating a hydrophobic compound into an aqueous medium
JPH07295162A (en) 1994-04-28 1995-11-10 Konica Corp Solid processing agent for silver halide photographic sensitive material
DE69523096T2 (en) * 1994-06-10 2002-06-06 Konishiroku Photo Ind Color development composition in granular or tablet form
JPH0990573A (en) * 1995-09-28 1997-04-04 Konica Corp Solid developing replenisher for processing silver halide photographic sensitive material and developing method using the same
US5900355A (en) * 1998-03-26 1999-05-04 Eastman Kodak Company Method of making uniformly mixed dry photographic processing composition using hot melt binder
DE60018376T2 (en) * 1999-12-27 2005-07-21 Fuji Photo Film Co., Ltd., Minami-Ashigara Solid granulated processing agent for silver halide photographic material and its method of preparation

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 (en) * 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 (en) * 1972-03-25 1979-08-17
IT1022356B (en) * 1974-09-26 1978-03-20 Veronesi Fiorenzo COMPRESS OF CHEMICAL COMPOUNDS PAR TIOCLARMENTE FOR THE TREATMENT OF SENSITIVE MATERIAL FOR PHOTOGRAPHIC USE
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 (en) * 1985-06-07 1987-01-02 Chemco Inc METHOD FOR PREPARING PHOTOBAD CONCENTRATES IN SLIMMING PROCESS, PROCESS FOR PROCESSING SUCH CONCENTRATES TO USE PHOTOGRAPHIC PROCESSING POOLS, AN APPARATUS SUITABLE FOR THIS PROCESSING AND A PROPERTY THROUGH THIS PROCESS.
US4816384A (en) * 1986-10-09 1989-03-28 E. I. Du Pont De Nemours And Company Powdered packaged developer
JP2556339B2 (en) * 1987-09-29 1996-11-20 コニカ株式会社 Photographic processing agent having long-term processing stability and processing method of photographic light-sensitive material
DE3830023A1 (en) * 1988-09-03 1990-03-15 Agfa Gevaert Ag GRANULATED, COLOR PHOTOGRAPHIC DEVELOPER AND ITS MANUFACTURE
IT1229224B (en) * 1989-04-03 1991-07-26 Minnesota Mining & Mfg CONCENTRATED COMPOSITION OF PHOTOGRAPHIC DEVELOPMENT AND METHOD TO PREPARE IT.
JPH087456B2 (en) * 1989-09-26 1996-01-29 富士ゼロックス株式会社 Dry developer
DE4009310A1 (en) * 1990-03-23 1991-09-26 Agfa Gevaert Ag GRANULATED PHOTOCHEMICALS

Also Published As

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

Similar Documents

Publication Publication Date Title
EP0472007B1 (en) Photographic chemicals with reduced dust fraction
DE3123771C2 (en)
EP0358034B1 (en) Granulated photographic colour developer and its preparation
EP0268967B1 (en) Cleaning block for the cistern of flushing toilets
EP0407874B1 (en) Defoaming agents for liquid wetting agents and low-foam liquid plant protective agents
DE68918653T2 (en) Non-film-forming, solid, high-performance floor cleaning agents.
DE69221230T2 (en) Stable iodophor in polyurethane foam
DE4009310A1 (en) GRANULATED PHOTOCHEMICALS
EP0111135B1 (en) Use of alkylmonophosphonic acids as germicidal compounds in acid solutions
EP0541589B1 (en) Liquid washing agent with bleaching action
EP0405238A1 (en) Granulated photographic fixing composition and its preparation
DE2132509A1 (en) Complexing agents
EP0333143B1 (en) Medicinal soaps
EP0407752A1 (en) Granulated colour photographic bleaching agent and its preparation
EP0358035A2 (en) Granulated colour-photographic developer, and its manufacture
Nixon Toxicity evaluation of trisodium nitrilotriacetate
EP1059350A1 (en) Encapsulated detergent composition
DE2602030A1 (en) DIPHOSPHONOALCANCARBONIC ACIDS
EP0074078B1 (en) Softening laundry rinser
DE69122901T2 (en) Pharmaceutical composition containing iodine
EP0183945A2 (en) Aqueous stable suspensions of water-insoluble silicates, capable of binding calcium ions, and their use for the production of washing and cleaning agents
DE69101632T2 (en) BLEACHER WITH EXCESS SULFITE.
EP0324335B1 (en) Colour photographic development system without overflow
DE68925610T2 (en) Radiation sensitive composition developer
DE4340124A1 (en) Virus-active substances

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT

17P Request for examination filed

Effective date: 19920518

17Q First examination report despatched

Effective date: 19950911

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT

REF Corresponds to:

Ref document number: 59108527

Country of ref document: DE

Date of ref document: 19970320

ITF It: translation for a ep patent filed

Owner name: 0414;03RMFSOCIETA' ITALIANA BREVETTI S.P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970410

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 20011210

REG Reference to a national code

Ref country code: FR

Ref legal event code: D6

REG Reference to a national code

Ref country code: FR

Ref legal event code: D6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20040713

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040716

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050712

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050725

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050727

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060727

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060727

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070330

BERE Be: lapsed

Owner name: *AGFA-GEVAERT A.G.

Effective date: 20050731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060701