EP0512318A2 - Photographic processing method - Google Patents

Photographic processing method Download PDF

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Publication number
EP0512318A2
EP0512318A2 EP92106846A EP92106846A EP0512318A2 EP 0512318 A2 EP0512318 A2 EP 0512318A2 EP 92106846 A EP92106846 A EP 92106846A EP 92106846 A EP92106846 A EP 92106846A EP 0512318 A2 EP0512318 A2 EP 0512318A2
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EP
European Patent Office
Prior art keywords
drying
bath
processing
water
chemical treatment
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Application number
EP92106846A
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German (de)
French (fr)
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EP0512318B1 (en
EP0512318A3 (en
Inventor
Ubbo Dr. Wernicke
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Agfa Gevaert AG
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Agfa Gevaert AG
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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
    • 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
    • G03C7/44—Regeneration; Replenishers
    • 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
    • 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
    • G03C7/3046—Processing baths not provided for elsewhere, e.g. final or intermediate washings
    • 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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/015—Apparatus or processes for the preparation of emulsions
    • G03C2001/0158—Washing of emulsions
    • 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
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • G03C2001/7451—Drying conditions
    • 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

Definitions

  • the invention relates to a photographic processing method which offers particular economic and ecological advantages.
  • Chemical treatment stages are understood to mean, in particular, developing, bleaching, fixing, bleach-fixing, conditioning and reversing, development comprising both the production of a silver image and the production of a color image.
  • the processing of photographic materials usually takes place in aqueous baths, the material to be processed only running dry into the first processing bath, usually this is the developing bath.
  • the various working solutions result in bath overflows that have to be disposed of.
  • the bath overflows are evaporated together for efficient disposal.
  • Vacuum evaporation devices are commercially available for this purpose.
  • the evaporated concentrate is unusable for photo purposes and must be disposed of.
  • the object of the invention is to reduce or avoid bath overflows and to provide an economically and ecologically improved processing method for photographic materials.
  • This object is achieved in that washing or stabilization and drying take place in at least two chemical treatment stages within the processing of photographic materials.
  • liquid adhering to the material after washing or stabilization is largely removed by squeezing rollers before drying.
  • the combination of washing and drying according to the invention takes place after all chemical treatment stages of the photographic processing method used in each case.
  • Drying is preferably carried out by IR radiation, hot air, microwaves or hot rollers or rollers or any combination of these types of drying.
  • Standardized processes change as a result of the features according to the invention, for example as follows: so far according to the invention RA-4 / AP 94 (Minilab) Color development Color development Fix bleach Water Water Fix bleach Water RA-4 / AP 94 (finisher) Color development Color development To stop Water bleaching bleaching Fix Water Water Fix Water C41 / AP 70 Color development Color development bleaching Water Fix bleaching Water Water Fix Water
  • drying is carried out only after the final rinsing, the rinsing partly by a so-called stabilization can be replaced.
  • stabilization can be replaced.
  • the associated disadvantages are listed above.
  • drying is carried out after each washing or stabilization.
  • the amount of the input materials required for photographic processing is thereby reduced, so that the wastewater and the environment are immediately relieved.
  • a commercial color paper was processed as follows: developer 45 s / 33 ° C Watering 22.5 s / 35 ° C bleaching 45 s / 33 ° C Watering 22.5 s / 25 ° C Fix 45 s / 33 ° C Watering 3 x 22.5 s / 25 ° C
  • the bleach bath has the following composition: Ammonium iron EDTA 50 g / l Ammonium bromide 100 g / l pH 5.5.
  • the regeneration rate is 60 ml / m2.
  • the regenerator has twice the concentration of NH4Fe EDTA and NH4Br.
  • the tank volume is 51.
  • the composition of the bleach bath is determined analytically: NH4Br 93 g NH4Fe EDTA 47 g ie, with a regeneration rate of 60 ml / m2 with a regenerator with double concentration based on the working solution, the dilution of the working solution by water introduced is almost compensated for.
  • the regeneration rate should have been approximately 64 ml / m2 to maintain the original concentrations of ammonium bromide and ammonium iron EDTA.
  • the amount of bath overflow was found to be 5790 ml.
  • the bath overflow has the same chemical composition as the working solution.
  • Example 2 The procedure is as in Example 1, but the photo material is squeezed off with rubber rollers after leaving the first wash and then irradiated with a ceramic IR radiator 3 ⁇ 400 watts of 75 cm length for 22 s. Only then was the photo material fed into the bleach bath.
  • the regeneration rate was 60 ml / m2, the regenerator concentration was not 200%, but only 110% of the concentration of the working solution.
  • the chemical composition of the working solution was again checked analytically: NH4Br 96 g NH4Fe 48.5 g.
  • concentrations of the regenerators can accordingly be reduced from 200% to less than 110%.
  • the amount of bath overflow was determined to be 370 ml, i.e. the transfer of bleaching bath from the tank through the photo material was slightly less than the regeneration rate of 60 ml / m2.
  • the intermediate overdrying according to the invention reduces the bath overflow to be disposed of by more than 90%.
  • the fixer has the following chemical composition: Sodium thiosulfate 70 g / l Potassium sulfite 15 g / l pH 7.0
  • the fixer replenisher has twice the chemical concentration.
  • the regeneration rate is again 60 ml / m2.
  • the fixer overflow is 5930 ml.
  • Example 3 The procedure is as in Example 3, but the photographic material is squeezed off with rubber rollers after leaving the wash in front of the fixing bath and passed through a narrow channel 11 cm wide, 40 cm long and 2 cm high.
  • hot air (approx. 80 ° C) flows into the duct from two flat nozzles.
  • the photo material runs between these nozzles.
  • the air speed in the duct is up to 5 to 50 times the feed speed of the photo material depending on the desired degree of drying.
  • the intermediate material thus dried then runs largely dry into the fixing bath.
  • the regeneration rate is again 60 ml / m2.
  • the regenerator composition corresponds only to the concentration of the working solution.
  • the amount of fixer overflow is 480 ml.
  • the required amount of chemicals is approximately halved by the intermediate drying according to the invention (half the regenerator concentration).
  • the amount of fixer overflow is reduced by approximately 90%.
  • the 480 ml residual overflow found results from the fact that the incoming paper still has a very low residual moisture and that the amount of fixing bath carried out by the photographic material does not correspond exactly to the set regeneration rate.

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

Abstract

A method of processing photographic silver halide materials in a plurality of processing stages, in which a washing and a drying follow each of at least two chemical treatment stages, is distinguished by a reduced consumption of chemicals and a reduced production of waste solution requiring disposal.

Description

Die Erfindung betrifft ein fotografisches Verarbeitungsverfahren, das besondere ökonomische und ökologische Vorteile bietet.The invention relates to a photographic processing method which offers particular economic and ecological advantages.

Die Verarbeitung fotografischer Silberhalogenidmaterialien umfaßt verschiedene chemische Behandlungsstufen, die je nach Material und angewendetem Verfahren unterschiedlich sein können. Als chemische Behandlungsstufen werden insbesondere Entwickeln, Bleichen, Fixieren, Bleichfixieren, Conditionieren und Umkehren verstanden, wobei Entwickeln sowohl die Erzeugung eines Silberbildes als auch die Erzeugung eines Farbbildes umfaßt.The processing of silver halide photographic materials involves various chemical treatment steps, which may vary depending on the material and process used. Chemical treatment stages are understood to mean, in particular, developing, bleaching, fixing, bleach-fixing, conditioning and reversing, development comprising both the production of a silver image and the production of a color image.

Die Verarbeitung fotografischer Materialien geschieht üblicherweise in wäßrigen Bädern, wobei das zu verarbeitende Material nur in das erste Verarbeitungsbad trocken einläuft, üblicherweise ist dies das Entwicklungsbad.The processing of photographic materials usually takes place in aqueous baths, the material to be processed only running dry into the first processing bath, usually this is the developing bath.

In alle nachfolgenden Verarbeitungsbäder werden vom Fotomaterial Wasser oder Chemikalienlösungen eingeschleppt.In all subsequent processing baths, water or chemical solutions are carried in from the photographic material.

Das führt zu einer Verdünnung der Arbeitslösung. Diese Verdünnung der Arbeitslösung muß durch entsprechend höher konzentrierte Regeneratoren ausgeglichen werden. Einschleppung von Wasser und Regeneratordosierung führt zu Volumenvergrößerung der Arbeitslösungen.This leads to a dilution of the working solution. This dilution of the working solution must be compensated for by correspondingly more concentrated regenerators. The introduction of water and replenisher dosing leads to an increase in the volume of the working solutions.

Aus den verschiedenen Arbeitslösungen resultieren Badüberläufe die entsorgt werden müssen. Zur rationellen Entsorgung werden die Badüberläufe gemeinsam eingedampft.The various working solutions result in bath overflows that have to be disposed of. The bath overflows are evaporated together for efficient disposal.

Hierzu sind Vakuum-Verdampfungsgeräte im Handel. Das eingedampfte Konzentrat ist für Fotozwecke unbrauchbar und muß entsorgt werden.Vacuum evaporation devices are commercially available for this purpose. The evaporated concentrate is unusable for photo purposes and must be disposed of.

Aufgabe der Erfindung ist, Badüberläufe zu vermindern oder zu vermeiden und ein ökonomisch und ökologisch verbessertes Verarbeitungsverfahren für fotografische Materialien bereitzustellen.The object of the invention is to reduce or avoid bath overflows and to provide an economically and ecologically improved processing method for photographic materials.

Diese Aufgabe wird dadurch gelöst, daß auf wenigstens zwei chemische Behandlungsstufen innerhalb der Verarbeitung fotografischer Materialien jeweils eine Wässerung bzw. Stabilisierung und eine Trocknung erfolgt.This object is achieved in that washing or stabilization and drying take place in at least two chemical treatment stages within the processing of photographic materials.

In den Fällen, in denen die Wässerungsrate unter 1 l/m² vermindert wird, kann es nämlich zweckmäßig sein, dem Wasser zur Verhinderung von Ausfällungen und evtl. Ablagerungen von Ca-Salzen, geringe Mengen von Komplexbildnern vom Typ der Aminopolycarbonsäuren und/oder der organischen Phosphonsäuren zuzusetzen und/oder zum Schutz vor dem Wachstum von Mikroorganismen handelsübliche Biozide, z.B. vom Typ der Isothiazolinone, und/oder zum Schutz von Färbungen durch Oxidationsprodukte, Oxidationsschutzmittel wie Sulfit, Hydroxylamin und Diethylhydroxylamin zuzusetzen oder den pH-Wert auf Werte zwischen 3,5 und 9,5 einzustellen bzw. Netzmittel zuzusetzen. Die Zusätze zur Wässerung erfolgen vorzugsweise in Konzentrationen von 0,0001 bis 0,01 Mol/l.In cases where the watering rate is reduced below 1 l / m², it may be advisable to add small amounts of complexing agents of the aminopolycarboxylic acid and / or organic type to the water to prevent precipitation and possible deposits of Ca salts Add phosphonic acids and / or to protect against the growth of microorganisms commercially available biocides, e.g. of the type of the isothiazolinones, and / or for the protection of colorations by oxidation products, antioxidants such as sulfite, hydroxylamine and diethylhydroxylamine or the pH value to be adjusted to between 3.5 and 9.5 or wetting agent. The additions for washing are preferably carried out in concentrations of 0.0001 to 0.01 mol / l.

Vorzugsweise wird am Material nach der Wässerung bzw. Stabilisierung anhaftende Flüssigkeit vor der Trocknung durch Abquetschwalzen weitgehend entfernt.Preferably, liquid adhering to the material after washing or stabilization is largely removed by squeezing rollers before drying.

Insbesondere erfolgt nach allen chemischen Behandlungsstufen des jeweils benutzten fotografischen Verarbeitungsverfahrens die erfindungsgemäße Kombination von Wässerung und Trocknung.In particular, the combination of washing and drying according to the invention takes place after all chemical treatment stages of the photographic processing method used in each case.

Es folgt, daß in jede chemische Behandlungsstufe ein weitgehend trockenes Material einläuft.It follows that a largely dry material runs into each chemical treatment stage.

Die Trocknung erfolgt vorzugsweise durch IR-Strahlung, Heißluft, Mikrowellen oder heiße Rollen oder Walzen oder beliebige Kombinationen dieser Trocknungsarten.Drying is preferably carried out by IR radiation, hot air, microwaves or hot rollers or rollers or any combination of these types of drying.

Standardisierte Prozesse ändern sich durch die erfindungsgemäßen Merkmale beispielsweise wie folgt: bisher nach Erfindung RA-4/AP 94 (Minilab) Farbentwickeln Farbentwickeln Bleichfixieren Wässern Wässern Bleichfixieren Wässern RA-4/AP 94 (Finisher) Farbentwickeln Farbentwickeln Stoppen Wässern Bleichen Bleichen Fixieren Wässern Wässern Fixieren Wässern C41/AP 70 Farbentwickeln Farbentwickeln Bleichen Wässern Fixieren Bleichen Wässern Wässern Fixieren Wässern Standardized processes change as a result of the features according to the invention, for example as follows: so far according to the invention RA-4 / AP 94 (Minilab) Color development Color development Fix bleach Water Water Fix bleach Water RA-4 / AP 94 (finisher) Color development Color development To stop Water bleaching bleaching Fix Water Water Fix Water C41 / AP 70 Color development Color development bleaching Water Fix bleaching Water Water Fix Water

In den bekannten, vorstehend aufgeführten Verfahren wird nur nach der Schlußwässerung getrocknet, wobei die Wässerung z.T. durch eine sogenannte Stabilisierung ersetzt sein kann. Die damit verbundenen Nachteile sind vorstehend aufgeführt. Bei den erfindungsgemäßen Verfahren wird nach jeder Wässerung oder Stabilisierung getrocknet.In the known processes listed above, drying is carried out only after the final rinsing, the rinsing partly by a so-called stabilization can be replaced. The associated disadvantages are listed above. In the methods according to the invention, drying is carried out after each washing or stabilization.

Erfindungsgemäß wird dadurch die Menge der zur fotografischen Verarbeitung benötigten Einsatzstoffe vermindert, so daß unmittelbar eine Entlastung des Abwassers und der Umwelt resultiert.According to the invention, the amount of the input materials required for photographic processing is thereby reduced, so that the wastewater and the environment are immediately relieved.

Beispiel 1 (Vergleich) Example 1 (comparison)

Ein handelsübliches Colorpapier wurde wie folgt verarbeitet: Entwickler 45 s/33°C Wässerung 22,5 s/35°C Bleichen 45 s/33°C Wässerung 22,5 s/25°C Fixieren 45 s/33°C Wässerung 3 x 22,5 s/25°C A commercial color paper was processed as follows: developer 45 s / 33 ° C Watering 22.5 s / 35 ° C bleaching 45 s / 33 ° C Watering 22.5 s / 25 ° C Fix 45 s / 33 ° C Watering 3 x 22.5 s / 25 ° C

Das Bleichbad hat folgende Zusammensetzung: Ammonium-Eisen EDTA 50 g/l Ammonium-Bromid 100 g/l pH 5,5. The bleach bath has the following composition: Ammonium iron EDTA 50 g / l Ammonium bromide 100 g / l pH 5.5.

Die Regenerierquote beträgt 60 ml/m².
Der Regenerator hat die doppelte Konzentration an NH₄Fe EDTA und NH₄Br.
Das Tankvolumen beträgt 51.The regeneration rate is 60 ml / m².
The regenerator has twice the concentration of NH₄Fe EDTA and NH₄Br.
The tank volume is 51.

Es wird nach Verarbeitung von 100 m² Colorpapier die Zusammensetzung des Bleichbades analytisch ermittelt: NH₄Br 93 g NH₄Fe EDTA 47 g
d.h., durch eine Regenerierquote von 60 ml/m² mit einem Regenerator mit doppelter Konzentration bezogen auf die Arbeitslösung, wird die Verdünnung der Arbeitslösung durch eingeschlepptes Wasser knapp kompensiert. Die Regenerierquote hätte ca. 64 ml/m² betragen müssen, um die ursprünglichen Konzentrationen an Ammoniumbromid und Ammoniumeisen EDTA aufrechtzuerhalten.After processing 100 m² of color paper, the composition of the bleach bath is determined analytically: NH₄Br 93 g NH₄Fe EDTA 47 g
ie, with a regeneration rate of 60 ml / m² with a regenerator with double concentration based on the working solution, the dilution of the working solution by water introduced is almost compensated for. The regeneration rate should have been approximately 64 ml / m² to maintain the original concentrations of ammonium bromide and ammonium iron EDTA.

Die Menge an Badüberlauf wurde mit 5790 ml ermittelt. Der Badüberlauf hat die gleiche chemische Zusammensetzung wie die Arbeitslösung.The amount of bath overflow was found to be 5790 ml. The bath overflow has the same chemical composition as the working solution.

Beispiel 2 (erfindungsgemäß) Example 2

Es wird wie in Beispiel 1 verfahren, jedoch wird das Fotomaterial nach dem Verlassen der ersten Wässerung mit Gummiwalzen abgequetscht und anschließend mit einem Keramik-IR-Strahler 3 x 400 Watt von 75 cm Länge 22 s bestrahlt. Erst anschließend wurde das Fotomaterial in den Bleichbadtank geleitet.The procedure is as in Example 1, but the photo material is squeezed off with rubber rollers after leaving the first wash and then irradiated with a ceramic IR radiator 3 × 400 watts of 75 cm length for 22 s. Only then was the photo material fed into the bleach bath.

Die Regenerierquote betrug 60 ml/m², die Regeneratorkonzentration betrug nicht 200 %, sondern nur 110 % der Konzentration der Arbeitslösung.The regeneration rate was 60 ml / m², the regenerator concentration was not 200%, but only 110% of the concentration of the working solution.

Erneut wurde nach Verarbeitung von 100 m² Colorpapier die chemische Zusammensetzung der Arbeitslösung analytisch überprüft: NH₄Br 96 g NH₄Fe 48,5 g.
Durch die erfindungsgemäße Zwischentrocknung des Materials können demnach die Konzentrationen der Regeneratoren von 200 % auf weniger als 110 % vermindert werden.After processing 100 m² of color paper, the chemical composition of the working solution was again checked analytically: NH₄Br 96 g NH₄Fe 48.5 g.
By means of the intermediate drying of the material according to the invention, the concentrations of the regenerators can accordingly be reduced from 200% to less than 110%.

Die Menge an Badüberlauf wurde mit 370 ml bestimmt, d.h. die Verschieppung von Bleichbad aus dem Tank durch das Fotomaterial betrug etwas weniger als die Regenerierquote von 60 ml/m². Durch die erfindungsgemäße Zwischentrocknung wird der zu entsorgende Badüberlauf um mehr als 90 % vermindert.The amount of bath overflow was determined to be 370 ml, i.e. the transfer of bleaching bath from the tank through the photo material was slightly less than the regeneration rate of 60 ml / m². The intermediate overdrying according to the invention reduces the bath overflow to be disposed of by more than 90%.

Beispiel 3 (Vergleich) Example 3 (comparison)

Es wird wie in Beispiel 1 verfahren, jedoch wird zusätzlich auch das Fixierbad einbezogen.The procedure is as in Example 1, but the fixing bath is also included.

Das Fixierbad hat folgende chemische Zusammensetzung: Natriumthiosulfat 70 g/l Kaliumsulfit 15 g/l pH 7,0
Der Regenerator zum Fixierbad hat die doppelte Chemikalienkonzentration.The fixer has the following chemical composition: Sodium thiosulfate 70 g / l Potassium sulfite 15 g / l pH 7.0
The fixer replenisher has twice the chemical concentration.

Die Regenerierquote beträgt wiederum 60 ml/m².The regeneration rate is again 60 ml / m².

Nach der Verarbeitung von 100 m² Colorpapier wird die Zusammensetzung des Fixierbades analytisch überprüft. Natriumthiosulfat 68 g/l Kaliumsulfit 12 g/l After processing 100 m² of color paper, the composition of the fixing bath is checked analytically. Sodium thiosulfate 68 g / l Potassium sulfite 12 g / l

Durch die Regenerierung wird somit die chemische Zusammensetzung der Arbeitslösung praktisch konstant gehalten, obwohl das Fotomaterial Wasser in das Fixierbad einschleppt. Der Fixierbad-Überlauf beträgt 5930 ml.As a result of the regeneration, the chemical composition of the working solution is kept practically constant, even though the photo material carries water into the fixing bath. The fixer overflow is 5930 ml.

Beispiel 4 (erfindungsgemäß) Example 4

Es wird wie in Beispiel 3 verfahren, jedoch wird das Fotomaterial nach dem Verlassen der Wässerung vor dem Fixierbad mit Gummiwalzen abgequetscht und durch einen engen Kanal von 11 cm Breite, 40 cm Länge und 2 cm Höhe geleitet.The procedure is as in Example 3, but the photographic material is squeezed off with rubber rollers after leaving the wash in front of the fixing bath and passed through a narrow channel 11 cm wide, 40 cm long and 2 cm high.

An der Einlaufseite des Fotomaterials in den Kanal strömt aus zwei flachen Düsen heiße Luft (ca. 80°C) in den Kanal. Zwischen diesen Düsen läuft das Fotomaterial hindurch.On the inlet side of the photo material into the duct, hot air (approx. 80 ° C) flows into the duct from two flat nozzles. The photo material runs between these nozzles.

Die Luftgeschwindigkeit im Kanal beträgt bis 5- bis 50-fache der Vorschubgeschwindigkeit des Fotomaterials je nach gewünschtem Trocknungsgrad.The air speed in the duct is up to 5 to 50 times the feed speed of the photo material depending on the desired degree of drying.

Das derart zwischengetrocknete Fotomaterial läuft dann weitgehend trocken in das Fixierbad ein.The intermediate material thus dried then runs largely dry into the fixing bath.

Die Regenerierquote beträgt wiederum 60 ml/m².The regeneration rate is again 60 ml / m².

Die Regenerator-Zusammensetzung entspricht nur der Konzentration der Arbeitslösung.The regenerator composition corresponds only to the concentration of the working solution.

Nach Verarbeitung von 100 m² Fotopapier wird die Zusammensetzung des Fixierbades analytisch überprüft. Natriumthiosulfat 66,5 g Kaliumsulfit 11,3 g After processing 100 m² of photo paper, the composition of the fixing bath is checked analytically. Sodium thiosulfate 66.5 g Potassium sulfite 11.3 g

Die Menge an Fixierbad-Überlauf beträgt 480 ml.The amount of fixer overflow is 480 ml.

Durch die erfindungsgemäße Zwischentrocknung wird die erforderliche Chemikalienmenge in etwa halbiert (halbe Regeneratorkonzentration). Außerdem wird die Menge an Fixierbadüberlauf um ca. 90 % vermindert. Die gefundenen 480 ml Rest-Überlauf resultieren daraus, daß das einlaufende Papier noch eine sehr geringe Restfeuchte aufweist und daß weiterhin die vom Fotomaterial ausgeschleppte Fixierbadmenge nicht exakt der eingestellten Regenerierquote entspricht.The required amount of chemicals is approximately halved by the intermediate drying according to the invention (half the regenerator concentration). In addition, the amount of fixer overflow is reduced by approximately 90%. The 480 ml residual overflow found results from the fact that the incoming paper still has a very low residual moisture and that the amount of fixing bath carried out by the photographic material does not correspond exactly to the set regeneration rate.

Claims (3)

Verfahren zur Verarbeitung fotografischer Silberhalogenidmaterialien mit mehreren Verarbeitungsstufen, dadurch gekennzeichnet, daß auf wenigstens zwei chemische Behandlungsstufen jeweils eine Wässerung oder Stabilisierung und eine Trocknung erfolgt.Process for processing photographic silver halide materials with several processing stages, characterized in that washing or stabilization and drying are carried out in each case at least two chemical treatment stages. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als chemische Behandlungsstufen folgende Prozesse in Frage kommen:

Entwickeln
Bleichen
Fixieren
Bleichfixieren
Conditionieren
Umkehren.Method according to claim 1, characterized in that the following processes can be considered as chemical treatment stages:

Develop
bleaching
Fix
Fix bleach
Condition
Turning back. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Trocknung durch IR-Strahlung, durch Heißluft, durch Mikrowellen oder durch heiße Rollen oder Walzen oder beliebige Kombinationen dieser Trocknungsarten erfolgt.A method according to claim 1, characterized in that the drying is carried out by IR radiation, by hot air, by microwaves or by hot rollers or rollers or any combination of these types of drying.
EP92106846A 1991-05-04 1992-04-22 Photographic processing method Expired - Lifetime EP0512318B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4114599 1991-05-04
DE4114599A DE4114599A1 (en) 1991-05-04 1991-05-04 PHOTOGRAPHIC PROCESSING METHOD

Publications (3)

Publication Number Publication Date
EP0512318A2 true EP0512318A2 (en) 1992-11-11
EP0512318A3 EP0512318A3 (en) 1993-06-23
EP0512318B1 EP0512318B1 (en) 1994-11-09

Family

ID=6430986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92106846A Expired - Lifetime EP0512318B1 (en) 1991-05-04 1992-04-22 Photographic processing method

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Country Link
EP (1) EP0512318B1 (en)
JP (1) JPH05150409A (en)
DE (2) DE4114599A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0871065A1 (en) * 1997-04-07 1998-10-14 Fuji Photo Film Co., Ltd. Method for processing a silver halide color photographic light-sensitive material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372028A (en) * 1961-01-10 1968-03-05 Panacolor Inc Color process utilizing a single layer silver halide emulsion
US3833376A (en) * 1972-11-24 1974-09-03 Minnesota Mining & Mfg Color development process and compositions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372028A (en) * 1961-01-10 1968-03-05 Panacolor Inc Color process utilizing a single layer silver halide emulsion
US3833376A (en) * 1972-11-24 1974-09-03 Minnesota Mining & Mfg Color development process and compositions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
'PHOTO-LAB-INDEX' 1985 , MORGAN & MORGAN , DOBBS FERRY SUPPLEMENT No. 178 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0871065A1 (en) * 1997-04-07 1998-10-14 Fuji Photo Film Co., Ltd. Method for processing a silver halide color photographic light-sensitive material

Also Published As

Publication number Publication date
DE4114599A1 (en) 1992-11-05
DE59200758D1 (en) 1994-12-15
EP0512318B1 (en) 1994-11-09
JPH05150409A (en) 1993-06-18
EP0512318A3 (en) 1993-06-23

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