EP0324335A2 - Colour photographic development system without overflow - Google Patents

Colour photographic development system without overflow Download PDF

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Publication number
EP0324335A2
EP0324335A2 EP89100003A EP89100003A EP0324335A2 EP 0324335 A2 EP0324335 A2 EP 0324335A2 EP 89100003 A EP89100003 A EP 89100003A EP 89100003 A EP89100003 A EP 89100003A EP 0324335 A2 EP0324335 A2 EP 0324335A2
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EP
European Patent Office
Prior art keywords
solution
developer
constituents
overflow
development
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EP89100003A
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German (de)
French (fr)
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EP0324335B1 (en
EP0324335A3 (en
Inventor
Ubbo Dr. Wernicke
Herbert Mitzinger
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Agfa Gevaert AG
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Agfa Gevaert AG
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    • 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
    • G03C7/407—Development processes or agents therefor
    • G03C7/413—Developers

Definitions

  • the invention relates to an overflow-free color photographic development solution system comprising a refill solution and a ready-to-use ready-to-use color photographic developer solution.
  • a disadvantage of the process according to EP-A-173 203 is that the photographic recording material to be developed must contain silver halide with at least 40 mol%, in particular at least 70 mol%, of chloride. Such chlo Silver-rich halides tend to be unstable. For this reason, photographic recording materials for producing colored images have predominantly light-sensitive emulsion layers with silver halide grains, the chloride content of which is less than 40 mol%, in particular less than 30 mol%.
  • the object of the invention was also to provide a development solution system for such color photographic negative papers in which there is no longer any overflow.
  • This task is solved with a development solution system consisting of a refill solution and a ready-to-use developer solution supplemented with it, in which both solutions contain known development solution components in certain concentrations.
  • the invention therefore relates to a development solution system comprising a refill solution and a ready-to-use developer solution supplemented with it, characterized in that the ready-to-use developer solution contains the following constituents in the amounts stated per 1 aqueous solution and, if appropriate, further customary constituents: 0 - 20 g benzyl alcohol, 3-15 g of the color developer compound of the formula or a corresponding amount of their salts, 0-2 g of the color developer compound of the formula or a corresponding amount of their salts, 8 - 35 g PO43 ions at least 0.2 g antioxidant and 2.1 - 4.2 g KBr and is adjusted to a pH of 10.5 to 12.5, that the regeneration rate is 50 to 120 ml / m2, preferably 60 to 100 ml / m2 developed material and the refill solution contains the individual components in a concentration that at the specified regeneration rate the developer solution in use always contains the above-mentioned components in the stated amounts.
  • Other constituents are other developer substances, optical brighteners, lubricants, for example polyalkylene glycols, surfactants, sodium and potassium sulfite, anti-limescale agents, stabilizers and and agents for adjusting the desired pH.
  • lubricants for example polyalkylene glycols, surfactants, sodium and potassium sulfite, anti-limescale agents, stabilizers and and agents for adjusting the desired pH.
  • Suitable antioxidants which are preferably used in an amount of 0.2 to 4 g, are e.g. Hydroxylamine, diethylhydroxylamine and sulfites.
  • the developer substance or developer substances are preferably used in an amount (based on free base) such that the weight ratio of developer substance to KBr is ⁇ 4 and is in particular 1.5 to 3.5.
  • CD 3 and optionally CD 4 are used as developer substances.
  • a commercial color paper (Agfacolor type 8) was exposed imagewise, bleached, fixed, washed and dried. The processing was set to type with respect to minimum densities, ⁇ -1 values, ⁇ -2 values and maximum densities.
  • the aqueous developer contained the following substances per liter: 15 ml of benzyl alcohol 8.5 ml diethylene glycol 3.0 g hydroxylamine sulfate 5.5 g CD-3 2.0 g K2SO3 34 g K2CO3 and 0.6 g KBr as well as surfactants, optical brighteners, stabilizers and anti-limescale in the usual amount and is adjusted to pH 10.2 with KOH.
  • the developer was supplemented with 325 ml / m2 of developed paper from a refill solution, the composition of which was adjusted so that the aqueous developer always contained the specified substances in the stated amounts, resulting in an overflow of approx. 250 ml / m2 of developed paper.
  • the development time was 210 seconds and the development temperature was 33 ° C.
  • the comparative example was repeated, with K2CO3 replaced by the equimolar amount of tripotassium phosphate, the CD-3 amount doubled and the amount of KBr increased to 3.0 g.
  • the pH was adjusted to 11.7.
  • the developer was regenerated with 80 ml / m2 developed paper of a refill solution of the following composition, with no overflow.
  • the development time was 210 seconds at 27 ° C developer temperature.
  • Part A contained per liter: Benzyl alcohol 320.0 ml Ethylene glycol 320.0 ml Polyethylene glycol, MW: 400 320.0 ml Diethylhydroxylamine 85 wt .-% aqueous solution 33.3 ml as well as surfactants and optical brighteners in the usual amount; pH 9.5 Part B contained per liter: KOH 390.0 g Monopotassium phosphate 346.7 g Potassium sulfite 21.5 g as well as limescale in the usual amount; pH 14 Part C contained per liter: CD-3 213.3 g Potassium sulfite 13.0 g KOH 17.3 g pH 2.0

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

Using a developer solution system consisting of a replenishing solution and a ready-to-use developer solution made up therewith, which contains the following constituents in the indicated quantities per l of aqueous solution and, if appropriate, further conventional constituents: 3 - 15 g of the colour developer compound of the formula <IMAGE> or a corresponding quantity of salts thereof, 8 - 35 g of PO4<3>-ions, at least 0.2 g of antioxidant and 2.1 - 4.2 g of KBr, which has been adjusted to a pH from 10.5 to 12.5, the regeneration quota being 50 to 120 ml/m<2> of developed material and the replenishing solution containing the individual constituents in such a concentration that, at the indicated regeneration quota, the developer solution in use contains the constituents indicated above always in the quantities indicated, development in accordance with the specification is achieved, without an overflow arising.

Description

Die Erfindung betrifft ein überlauffreies farbfoto­grafisches Entwicklungslösungssystem aus einer Nach­füllösung und einer damit ergänzten gebrauchsfertigen farbfotografischen Entwicklerlösung.The invention relates to an overflow-free color photographic development solution system comprising a refill solution and a ready-to-use ready-to-use color photographic developer solution.

Aus der EP-A-173203 ist ein Verfahren bekannt, bei dem die Entwicklung eines belichteten Silberhalogenid­aufzeichnungsmaterials mit einer Farbstoffentwickler­lösung durchgeführt wird, der nur soviel Nachfüllösung zue Ergänzung der verbrauchten Chemikalien zugegeben wird, daß kein Überlauf entsteht. Dieses Verfahren hat gegenüber allen vorbekannten Verfahren mit Überlauf den Vorteil, daß keine Entsorgung des Überlaufs, der aus ökologischen Gründen nicht in das Abwasser eingeleitet werden kann, erforderlich wird.From EP-A-173203 a method is known in which the development of an exposed silver halide recording material is carried out with a dye developer solution to which only so much replenishment solution is added to supplement the used chemicals that no overflow occurs. This method has the advantage over all previously known methods with overflow that no disposal of the overflow, which cannot be discharged into the wastewater for ecological reasons, is necessary.

Nachteilig bei dem Verfahren nach EP-A-173 203 ist, daß das zu entwickelnde fotografische Aufzeichnungsmaterial Silberhalogenid mit wenigstens 40 Mol-%, insbesondere wenigstens 70 Mol-% Chlorid enthalten muß. Solche chlo­ ridreichen Silberhalogenide neigen aber zu Instabili­täten. Aus diesem Grund haben fotografische Aufzeich­nungsmaterialien zur Herstellung farbiger Bilder über­wiegend lichtempfindliche Emulsionsschichten mit Silber­halogenidkörnern, deren Chloridanteil kleiner 40 Mol-% insbesondere kleiner 30 Mol-% ist.A disadvantage of the process according to EP-A-173 203 is that the photographic recording material to be developed must contain silver halide with at least 40 mol%, in particular at least 70 mol%, of chloride. Such chlo Silver-rich halides tend to be unstable. For this reason, photographic recording materials for producing colored images have predominantly light-sensitive emulsion layers with silver halide grains, the chloride content of which is less than 40 mol%, in particular less than 30 mol%.

Aufgabe der Erfindung war es, auch für solche farbfoto­grafischen Negativpapiere ein Entwicklungslösungssystem bereitzustellen, bei dem kein Überlauf mehr anfällt.The object of the invention was also to provide a development solution system for such color photographic negative papers in which there is no longer any overflow.

Diese Aufgabe wird mit einem Entwicklungslösungssystem aus einer Nachfüllösung und einer damit ergänzten ge­brauchsfertigen Entwicklerlösung gelöst, bei dem beide Lösungen an sich bekannte Entwicklungslösungsbestand­teile in bestimmten Konzentrationen enthalten.This task is solved with a development solution system consisting of a refill solution and a ready-to-use developer solution supplemented with it, in which both solutions contain known development solution components in certain concentrations.

Gegenstand der Erfindung ist daher ein Entwicklungs­lösungssystem aus einer Nachfüllösung und einer damit ergänzten gebrauchsfertigen Entwicklerlösung, dadurch gekennzeichnet, daß die gebrauchsfertige Entwickler­lösung die folgenden Bestandsteile in den angegebenen Mengen pro 1 wäßriger Lösung sowie gegebenenfalls wei­tere übliche Bestandteile enthält:
0 - 20 g Benzylalkohol,
3 - 15 g der Farbentwicklerverbindung der Formel

Figure imgb0001
oder einer entsprechenden Menge von deren Salzen,
0 - 2 g der Farbentwicklerverbindung der Formel
Figure imgb0002
 oder einer entsprechenden Menge von deren Salzen,
8 - 35 g PO₄³- Ionen
wenigstens 0,2 g Oxidationsschutzmittel und
2,1 - 4,2 g KBr
und auf einen pH-Wert von 10,5 bis 12,5 eingestellt ist, daß die Regenerierquote 50 bis 120 ml/m², vorzugsweise 60 bis 100 ml/m² entwickeltes Material beträgt und die Nachfüllösung die einzelnen Bestandteile in einer Kon­zentration enthält, daß bei der angegebenen Regenerier­quote die Entwicklerlösung im Gebrauch die oben ange­gebenen Bestandteile stets in den angegebenen Mengen enthält.The invention therefore relates to a development solution system comprising a refill solution and a ready-to-use developer solution supplemented with it, characterized in that the ready-to-use developer solution contains the following constituents in the amounts stated per 1 aqueous solution and, if appropriate, further customary constituents:
0 - 20 g benzyl alcohol,
3-15 g of the color developer compound of the formula
Figure imgb0001
 or a corresponding amount of their salts,
0-2 g of the color developer compound of the formula
Figure imgb0002
 or a corresponding amount of their salts,
8 - 35 g PO₄³ ions
at least 0.2 g antioxidant and
2.1 - 4.2 g KBr
and is adjusted to a pH of 10.5 to 12.5, that the regeneration rate is 50 to 120 ml / m², preferably 60 to 100 ml / m² developed material and the refill solution contains the individual components in a concentration that at the specified regeneration rate the developer solution in use always contains the above-mentioned components in the stated amounts.

Als weitere Bestandteile kommen andere Entwicklersub­stanzen, optische Aufheller, Gleitmittel, z.B. Poly­alkylenglykole, Tenside, Natrium-und Kaliumsulfit, Kalkschutzmittel, Stabilisatoren und und Mittel zur Einstellung des gewünschten pH-Wertes in Frage.Other constituents are other developer substances, optical brighteners, lubricants, for example polyalkylene glycols, surfactants, sodium and potassium sulfite, anti-limescale agents, stabilizers and and agents for adjusting the desired pH.

Geeignete Oxidationsschutzmittel, die vorzugsweise in einer Menge von 0,2 bis 4 g eingesetzt werden, sind z.B. Hydroxylamin, Diethylhydroxylamin und Sulfite.Suitable antioxidants, which are preferably used in an amount of 0.2 to 4 g, are e.g. Hydroxylamine, diethylhydroxylamine and sulfites.

Die Entwicklersubstanz oder Entwicklersubstanzen werden vorzugsweise in einer Menge eingesetzt (bezogen auf freie Base), daß das Gewichtsverhältnis Entwicklersub­stanz zu KBr < 4 ist und insbesondere 1,5 bis 3,5 be­trägt.The developer substance or developer substances are preferably used in an amount (based on free base) such that the weight ratio of developer substance to KBr is <4 and is in particular 1.5 to 3.5.

Als Entwicklersubstanzen werden insbesondere nur CD 3 und gegebenenfalls CD 4 eingesetzt.In particular, only CD 3 and optionally CD 4 are used as developer substances.

Der derzeit in großem Umfang weltweitbenutzte Ent­wicklungsprozeß EP 2 wird bei 33°C durchgeführt und be­nötigt 210 Sekunden. Es entsteht ein erheblicher Über­lauf von ca. 250 ml/m² entwickeltem Papier.The development process EP 2, which is currently used extensively worldwide, is carried out at 33 ° C. and takes 210 seconds. There is a significant overflow of approximately 250 ml / m² of developed paper.

Mit dem erfindungsgemäßen Entwicklungssystem wird nicht nur der Überlauf vollständig vermieden, man kann wahl­weise gegenüber EP 2 niedrigere Entwicklungstempera­turen oder kürzere Entwicklungszeiten einstellen.With the development system according to the invention, not only the overflow is completely avoided, but lower development temperatures or shorter development times can optionally be set compared to EP 2.

VergleichsbeispielComparative example

Ein handelsübliches Colorpapier (Agfacolor Typ 8) wurde bildmäßig belichtet, gebleicht, fixiert, gewaschen und getrocknet. Die Verarbeitung wurde bezüglich Minimal­dichten, γ-1-Werten, γ-2-Werten und Maximaldichten jeweils auf Typ eingestellt.A commercial color paper (Agfacolor type 8) was exposed imagewise, bleached, fixed, washed and dried. The processing was set to type with respect to minimum densities, γ-1 values, γ-2 values and maximum densities.

Der wäßrige Entwickler enthielt pro Liter die folgenden Substanzen:
15 ml Benzylalkohol
8,5 ml Diethylenglykol
3,0 g Hydroxylaminsulfat
5,5 g CD-3
2,0 g K₂SO₃
34 g K₂CO₃ und
0,6 g KBr
sowie Tenside, optische Aufheller, Stabilisatoren und Kalkschutzmittel in üblicher Menge und ist mit KOH auf pH 10,2 eingestellt.The aqueous developer contained the following substances per liter:
15 ml of benzyl alcohol
8.5 ml diethylene glycol
3.0 g hydroxylamine sulfate
5.5 g CD-3
2.0 g K₂SO₃
34 g K₂CO₃ and
0.6 g KBr
as well as surfactants, optical brighteners, stabilizers and anti-limescale in the usual amount and is adjusted to pH 10.2 with KOH.

Der Entwickler wurde mit 325 ml/m² entwickeltem Papier einer Nachfüllösung, deren Zusammensetzung so einge­stellt war, daß der wäßrige Entwickler die angegebenen Substanzen stets in den angegebenen Mengen enthielt, er­gänzt, wobei ein Überlauf von ca. 250 ml/m² entwickeltem Papier entstand.The developer was supplemented with 325 ml / m² of developed paper from a refill solution, the composition of which was adjusted so that the aqueous developer always contained the specified substances in the stated amounts, resulting in an overflow of approx. 250 ml / m² of developed paper.

Die Entwicklungszeit betrug 210 Sekunden, die Entwick­lungstemperatur 33°C.The development time was 210 seconds and the development temperature was 33 ° C.

Beispielexample

Das Vergleichsbeispiel wurde wiederholt, wobei K₂CO₃ durch die equimolare Menge Trikaliumphosphat ersetzt, die CD-3-Menge verdoppelt und die KBr-Menge auf 3,0 g erhöht wurden. Der pH-Wert auf 11,7 eingestellt.The comparative example was repeated, with K₂CO₃ replaced by the equimolar amount of tripotassium phosphate, the CD-3 amount doubled and the amount of KBr increased to 3.0 g. The pH was adjusted to 11.7.

Der Entwickler wurde mit 80 ml/m² entwickeltem Papier einer Nachfüllösung der nachfolgenden Zusammensetzung regeneriert, wobei kein Überlauf entstand.The developer was regenerated with 80 ml / m² developed paper of a refill solution of the following composition, with no overflow.

Die Entwicklungszeit betrug 210 Sekunden bei 27°C Ent­wicklertemperatur.The development time was 210 seconds at 27 ° C developer temperature.

Es wurden folgende Maximaldichten erzielt: Gelb Purpur Blaugrün Vergleichbeispiel 2,40 2,50 2,60 Beispiel 2,45 2,80 2,50 Bei Steigerung der Entwicklertemperatur wurden bei etwa gleichen Maximaldichten die folgenden Entwicklungszeiten erreicht: 33°C / 120 Sekunden 36°C / 80 Sekunden 41°C / 45 Sekunden Nachfüllösung 775 ml Wasser 75 ml Teil A 75 ml Teil B 75 ml Teil C Teil A enthielt pro Liter: Benzylalkohol 320,0 ml Ethylenglykol 320,0 ml Polyethylenglykol, MG:400 320,0 ml Diethylhydroxylamin 85 gew.-%ige wäßrige Lösung 33,3 ml sowie Tenside und optische Aufheller in üblicher Menge; pH Wert 9,5 Teil B enthielt pro Liter: KOH 390,0 g Monokaliumphosphat 346,7 g Kaliumsulfit 21,5 g sowie Kalkschutzmittel in üblicher Menge; pH-Wert 14 Teil C enthielt pro Liter: CD-3 213,3 g Kaliumsulfit 13,0 g KOH 17,3 g pH-Wert 2,0 The following maximum densities were achieved: yellow purple Blue green Comparative example 2.40 2.50 2.60 example 2.45 2.80 2.50 When the developer temperature was increased, the following development times were achieved at approximately the same maximum densities: 33 ° C / 120 Seconds 36 ° C / 80 Seconds 41 ° C / 45 Seconds Refill solution 775 ml water 75 ml Part A 75 ml part B 75 ml Part C. Part A contained per liter: Benzyl alcohol 320.0 ml Ethylene glycol 320.0 ml Polyethylene glycol, MW: 400 320.0 ml Diethylhydroxylamine 85 wt .-% aqueous solution 33.3 ml as well as surfactants and optical brighteners in the usual amount; pH 9.5 Part B contained per liter: KOH 390.0 g Monopotassium phosphate 346.7 g Potassium sulfite 21.5 g as well as limescale in the usual amount; pH 14 Part C contained per liter: CD-3 213.3 g Potassium sulfite 13.0 g KOH 17.3 g pH 2.0

Claims (2)

1. Entwicklungslösungssystem aus einer Nachfüllösung und einer damit ergänzten gebrauchsfertigen Ent­wicklerlösung, dadurch gekennzeichnet, daß die gebrauchsfertige Entwicklerlösung die folgenden Bestandteile in den angegebenen Mengen pro 1 wäßriger Lösung sowie gegebenenfalls weitere übliche Bestandteile enthält:
0 - 20 g Benzylalkohol
3 - 15 g der Farbentwicklerverbindung der Formel
Figure imgb0003
 oder einer entsprechenden Menge von deren Salzen,
0 - 2 g der Farbentwicklerverbindung der Formel
Figure imgb0004
 oder einer entsprechenden Menge von deren Salzen,
8 - 35 g PO₄³-Ionen
wenigstens 0,2 g Oxidationsschutzmittel und
2,1 - 4,2 g KBr
und auf einen pH-Wert von 10,5 bis 12,5 eingestellt ist,
daß die Regenierquote 50 bis 120 ml/m² entwickeltes Material beträgt und die Nachfüllösung die einzelnen Bestandteile in einer Konzentration enthält, daß bei der angegebenen Regenerierquote die Entwicklerlösung im Gebrauch die oben angegebenen Bestandteile stets in den angegebenen Mengen enthält.1. Development solution system consisting of a refill solution and a ready-to-use developer solution supplemented therewith, characterized in that the ready-to-use developer solution contains the following constituents in the amounts stated per 1 aqueous solution and, if appropriate, further customary constituents:
0-20 g of benzyl alcohol
3-15 g of the color developer compound of the formula
Figure imgb0003
 or a corresponding amount of their salts,
0-2 g of the color developer compound of the formula
Figure imgb0004
 or a corresponding amount of their salts,
8 - 35 g PO₄³ ions
at least 0.2 g antioxidant and
2.1 - 4.2 g KBr
and is adjusted to a pH of 10.5 to 12.5,
that the regeneration rate is 50 to 120 ml / m² of developed material and that the replenisher contains the individual components in a concentration that the developer solution in use always contains the above-mentioned components in the stated amounts. 2. Entwicklungslösungssystem nach Anspruch 1, dadurch gekennzeichnet, daß das Gewichtsverhältnis Entwick­lersubstanzen (bezogen auf freie Base) zu KBr < 4 ist.2. Development solution system according to claim 1, characterized in that the weight ratio of developer substances (based on free base) to KBr <4.
EP89100003A 1988-01-09 1989-01-02 Colour photographic development system without overflow Expired - Lifetime EP0324335B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3800385A DE3800385A1 (en) 1988-01-09 1988-01-09 OVERFLOW-FREE COLOR PHOTOGRAPHIC DEVELOPMENT SYSTEM
DE3800385 1988-01-09

Publications (3)

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EP0324335A2 true EP0324335A2 (en) 1989-07-19
EP0324335A3 EP0324335A3 (en) 1990-06-13
EP0324335B1 EP0324335B1 (en) 1993-03-03

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EP (1) EP0324335B1 (en)
DE (2) DE3800385A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0512311A2 (en) * 1991-05-03 1992-11-11 Agfa-Gevaert AG Developer solution for process with reduced chemical overflow

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5344750A (en) * 1992-05-12 1994-09-06 Fuji Photo Film Co., Ltd. Color development processing method of silver halide color photographic material using a color developer where the color developing agent concentration and processing temperature are a function of bromide ion concentration
US5556736A (en) * 1993-11-11 1996-09-17 Konica Corporation Method for processing a silver halide color photographic light-sensitive material and producing a color image
US5436118A (en) * 1994-03-31 1995-07-25 Eastman Kodak Company Method of processing silver halide photographic elements using a low volume thin tank processing system
GB2309092B (en) * 1996-01-10 1999-11-10 Kodak Ltd Photographic dye image-forming process
US7172854B2 (en) * 2003-11-10 2007-02-06 Konica Minolta Photo Imaging, Inc. Photographic color developer solution and processing method by use thereof

Citations (3)

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Publication number Priority date Publication date Assignee Title
DE2916836A1 (en) * 1979-04-26 1980-11-06 Agfa Gevaert Ag METHOD FOR PRODUCING PHOTOGRAPHIC IMAGES
EP0155428A1 (en) * 1983-11-15 1985-09-25 Société dite: KIS PHOTO INDUSTRIE Société anonyme Composition for developing colour films
EP0173203A2 (en) * 1984-08-30 1986-03-05 Agfa-Gevaert AG Method for preparing colour photographic images

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1478113A (en) * 1973-09-25 1977-06-29 Agfa Gevaert Development promoting compounds for silver halide photography
US4161406A (en) * 1977-12-07 1979-07-17 Philip A. Hunt Chemical Corp. Solution and method for processing high speed video news film
IT1196972B (en) * 1986-07-23 1988-11-25 Minnesota Mining & Mfg PHOTOGRAPHIC DEVELOPMENT COMPOSITIONS FOR SILVER HALIDES AND PROCEDURE FOR THE FORMATION OF SILVER PHOTOGRAPHIC IMAGES

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2916836A1 (en) * 1979-04-26 1980-11-06 Agfa Gevaert Ag METHOD FOR PRODUCING PHOTOGRAPHIC IMAGES
EP0155428A1 (en) * 1983-11-15 1985-09-25 Société dite: KIS PHOTO INDUSTRIE Société anonyme Composition for developing colour films
EP0173203A2 (en) * 1984-08-30 1986-03-05 Agfa-Gevaert AG Method for preparing colour photographic images

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0512311A2 (en) * 1991-05-03 1992-11-11 Agfa-Gevaert AG Developer solution for process with reduced chemical overflow
EP0512311A3 (en) * 1991-05-03 1994-02-02 Agfa Gevaert Ag

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EP0324335B1 (en) 1993-03-03
US4997749A (en) 1991-03-05
DE58903620D1 (en) 1993-04-08
EP0324335A3 (en) 1990-06-13
DE3800385A1 (en) 1989-07-20

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