EP0505820B1 - Squeezgee mechanism for photographic material - Google Patents

Squeezgee mechanism for photographic material Download PDF

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Publication number
EP0505820B1
EP0505820B1 EP92104043A EP92104043A EP0505820B1 EP 0505820 B1 EP0505820 B1 EP 0505820B1 EP 92104043 A EP92104043 A EP 92104043A EP 92104043 A EP92104043 A EP 92104043A EP 0505820 B1 EP0505820 B1 EP 0505820B1
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EP
European Patent Office
Prior art keywords
rollers
pair
tank
liquid
photographic material
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
EP92104043A
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German (de)
French (fr)
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EP0505820A3 (en
EP0505820A2 (en
Inventor
Günter Ing.-grad. Röckle
Ubbo Dr. Wernicke
Egon Bachem
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
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Agfa Gevaert AG
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Publication date
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Publication of EP0505820A2 publication Critical patent/EP0505820A2/en
Publication of EP0505820A3 publication Critical patent/EP0505820A3/en
Application granted granted Critical
Publication of EP0505820B1 publication Critical patent/EP0505820B1/en
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03DAPPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D15/00Apparatus for treating processed material
    • G03D15/02Drying; Glazing

Definitions

  • the invention relates to a device for processing photographic materials from at least one tank filled with a liquid and means which largely remove the liquid from the photographic material leaving the tank.
  • the photo material goes through a multi-stage process e.g. Developing, washing, bleaching, washing, fixing, washing, stabilizing, drying or developing, fixing, washing, drying.
  • these wipers are used before and after the individual processing stages to reduce the carryover of the solutions.
  • Rubber lips that strip the photo material on one or both sides.
  • Rubber lips in turn have the disadvantage that they are more worn at the edges when used for a longer period with a certain material width than in the middle and therefore no longer act evenly across the entire material width when the format is changed. Therefore they have to be renewed frequently.
  • So-called squeeze rollers through which the photographic material is passed under pressure, are also frequently used in photographic technology.
  • an abrasion device which consists of two squeeze roller pairs arranged above the washing tank. Understandably, however, this causes damage to the sensitive gelatin layers which impair the quality of the image.
  • the device according to the invention is defined in claim 1.
  • roller pairs or all roller pairs can be parallel to the horizontal (angle of 0 °).
  • next but one roller pairs are arranged in parallel. All pairs of rollers preferably assume the same angle to the horizontal, but the angle is alternately open on one side and the other.
  • rollers of a pair of rollers are arranged in such a way that they always exert approximately the same pressure on the material regardless of the thickness of the photographic material. This can e.g. achieve that the rollers are arranged eccentrically freely swinging or the axes of the rollers are in V-shaped converging guides.
  • a liquid supply is provided at the highest point of the highest mounted pair of rollers.
  • the photographic material which is passed between the rollers of each pair of rollers after leaving the tank, can thus be charged with a small amount of a liquid, in particular with water, so that a cascade watering with the smallest amounts is realized in a very small space.
  • the device of pairs of rollers arranged one above the other can be provided several times, including several times with respect to a tank, the applied water being conducted in countercurrent to the photographic material.
  • Fig. 1 shows a plan view of the device according to the invention.
  • Fig. 2 shows a section through the device of Fig. 1 along the line A-A.
  • (1) represents a tank within a photographic processing apparatus, e.g. a washing tank, the water level of which is not shown.
  • a pair of rollers (2), of which the front roller is shown, are mounted one above the other on axes (3) on a frame (4).
  • the rear roller is parallel to the front roller.
  • the wash water can be applied to one or both sides of the photographic material. Most of the water runs down the slope before it comes to the next pair of rollers until it finally drips into the tank (1).
  • the photographic material is identified by (5).
  • the width of which is matched to the photographic material to be processed.
  • the roll diameter is not critical; for space reasons you will choose a diameter between 1 and 10 cm.
  • a 35 mm wide photographic film passes through a developer, a wash, a bleach bath, a wash, a fixer, a wash and is finally dried.
  • the composition of the bleach bath corresponds to the following formula: NH 4 Br 140 g / l (NH 4 ) FeEDTA 70 g / l EDTA acid 10 g / l pH 6.0.
  • the residence time of the film in the bleaching bath is 4 min 20 sec., The temperature is 37.8 ° C. After the bleaching bath, the film runs into a small washing tank with a capacity of 0.5 l.
  • the material then passes through a second washing tank with a capacity of 5.0 l.
  • Example 1 The procedure is as in Example 1, but the scraper according to the invention is mounted above the tank 1 on the outlet side of the material.
  • the angle of the roller pairs to the horizontal is 2 °, the roller pairs being arranged with respect to one another in such a way that adjacent roller pairs form an angle of 4 ° (see FIG. 1).
  • the water inlet to tank 1 was closed and 200 ml / m 2 was dripped onto the upper pair of rollers instead. The water only reaches tank 1 from the last pair of rollers.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Verarbeitung fotografischer Materialien aus wenigstens einem mit einer Flüssigkeit gefüllten Tank und Mitteln, die die Flüssigkeit von dem den Tank verlassenden fotografischen Material weitgehend entfernen.The invention relates to a device for processing photographic materials from at least one tank filled with a liquid and means which largely remove the liquid from the photographic material leaving the tank.

Im Rahmen der fotografischen Verarbeitung durchläuft das Fotomaterial (Filme/Papiere) einen mehrstufigen Prozess z.B. Entwickeln, Wässern, Bleichen, Wässern, Fixieren, Wässern, Stabilisieren, Trocknen oder Entwickeln, Fixieren, Wässern, Trocknen.As part of the photographic processing, the photo material (films / papers) goes through a multi-stage process e.g. Developing, washing, bleaching, washing, fixing, washing, stabilizing, drying or developing, fixing, washing, drying.

Um das am Fotomaterial anhaftende Wasser vor der Trocknung möglichst weitgehend zu entfernen, wurden dort zuerst sogenannte "Abstreifer" eingesetzt. Dadurch wird der Trocknungsvorgang beschleunigt und Energie erspart, die sonst notwendig wäre, um das anhaftende Wasser zu verdampfen.In order to remove as much as possible of the water adhering to the photographic material before drying, so-called "wipers" were first used there. This speeds up the drying process and saves energy that would otherwise be necessary to evaporate the adhering water.

Mitunter werden diese Abstreifer auch vor und nach den einzelnen Verarbeitungsstufen eingesetzt, um die Verschleppung der Lösungen zu vermindern. Verwendet werden zu den genannten Zwecken z.B. Gummilippen, die das Fotomaterial einseitig oder beidseitig abstreifen.Sometimes these wipers are used before and after the individual processing stages to reduce the carryover of the solutions. Are used for the purposes mentioned e.g. Rubber lips that strip the photo material on one or both sides.

Auch sind Vorrichtungen bekannt, mit denen durch Druckluft die oberflächlich anhaftende Flüssigkeit abgeblasen wird. Eine weitere Methode ist die Vakuum-Absaugung.Devices are also known with which the superficially adhering liquid is blown off by compressed air. Another method is vacuum suction.

Während die Erzeugung von Vakuum technisch relativ aufwendig ist, hat die einfache Anwendung von Druckluft den Nachteil, daß die chemischen Lösungen fein zerstäubt an Stellen hingelangen, wo nach Verdunsten der Flüssigkeit störende Kristall-Rückstande verbleiben.While the generation of vacuum is technically relatively complex, the simple use of compressed air has the disadvantage that the atomized chemical solutions reach the places where, after the liquid has evaporated, disruptive crystal residues remain.

Gummilippen haben wiederum den Nachteil, daß sie bei längerer Benutzung mit einer bestimmten Materialbreite an den Rändern stärker abgenutzt werden als in der Mitte und deswegen beim Wechsel des Formats nicht mehr gleichmäßig über die gesamte Materialbreite wirken. Sie müssen deswegen häufig erneuert werden.Rubber lips in turn have the disadvantage that they are more worn at the edges when used for a longer period with a certain material width than in the middle and therefore no longer act evenly across the entire material width when the format is changed. Therefore they have to be renewed frequently.

Auch werden in der fotografischen Technik häufig sogenannte Abquetsch-Walzen angewendet, durch die das Fotomaterial unter Druck hindurchgeführt wird. Aus EP-A-238 924 ist eine Absrieif-vorrichtung bekannt, die aus zwei über dem Wäserungstank angeordneten Abquetschwalzenpoaren besteht.Verständlicherweise entstehen dadurch aber leicht Verletzungen der empfindlichen Gelatine-Schichten, die die Qualität des Bildes beeinträchtigen.So-called squeeze rollers, through which the photographic material is passed under pressure, are also frequently used in photographic technology. From EP-A-238 924 an abrasion device is known which consists of two squeeze roller pairs arranged above the washing tank. Understandably, however, this causes damage to the sensitive gelatin layers which impair the quality of the image.

Überraschenderweise wurde nun gefunden, daß sich sämtliche aufgeführten Nachteile durch eine Abstreif-Vorrichtung nachstehender Bauart vermeiden lassen und daß sich trotzdem eine hervorragende Reinigungswirkung des Fotomaterials ergibt.Surprisingly, it has now been found that all of the disadvantages listed can be avoided by means of a stripping device of the type below and that the photographic material nevertheless has an excellent cleaning effect.

Die erfindungsgemäße Vorrichtung ist im Anspruch 1 definiert.The device according to the invention is defined in claim 1.

Somit können ein Teil der Rollenpaare oder alle Rollenpaare parallel zur Horizontalen liegen (Winkel von 0°).This means that some of the roller pairs or all roller pairs can be parallel to the horizontal (angle of 0 °).

Vorzuziehen ist jedoch eine geringe Neigung zur Horizontalen, insbesondere ein Winkel von 1 bis 30° in der unter d) angegebenen Weise.However, a slight inclination to the horizontal is preferred, in particular an angle of 1 to 30 ° in the manner indicated under d).

Vorzugsweise sind die jeweils übernächsten Rollenpaare parallel angeordnet. Bevorzugt nehmen alle Rollenpaare den gleichen Winkel zur Horizontalen ein, allerdings ist der Winkel alternierend zur einen und zur anderen Seite geöffnet.Preferably, the next but one roller pairs are arranged in parallel. All pairs of rollers preferably assume the same angle to the horizontal, but the angle is alternately open on one side and the other.

Die Rollen eines Rollenpaares sind insbesondere so zueinander angeordnet, daß sie unabhängig von der Stärke des fotografischen Materials stets den annähernd gleichen Druck auf das Material ausüben. Dies läßt sich z.B. dadurch erreichen, daß die Rollen exzentrisch frei schwingend angeordnet sind oder die Achsen der Rollen sich in V-förmig aufeinander zulaufenden Führungen befinden.The rollers of a pair of rollers are arranged in such a way that they always exert approximately the same pressure on the material regardless of the thickness of the photographic material. This can e.g. achieve that the rollers are arranged eccentrically freely swinging or the axes of the rollers are in V-shaped converging guides.

In der Vorrichtung gemäß der Erfindung ist eine Flüssigkeitszufuhr an der höchsten Stelle des am höchsten angebrachten Rollenpaares vorgesehen. Das fotografische Material, das nach Verlassen des Tanks zwischen den Rollen jedes Rollenpaares hindurchgeführt wird, kann so mit einer geringen Menge einer Flüssigkeit, insbesondere mit Wasser, beaufschlagt werden, so daß eine Kaskadenwässerung mit geringsten Mengen auf engstem Raum realisiert wird.In the device according to the invention, a liquid supply is provided at the highest point of the highest mounted pair of rollers. The photographic material, which is passed between the rollers of each pair of rollers after leaving the tank, can thus be charged with a small amount of a liquid, in particular with water, so that a cascade watering with the smallest amounts is realized in a very small space.

Die Vorrichtung übereinander angeordneter Rollenpaare kann mehrfach vorgesehen sein, auch bezüglich eines Tanks mehrfach, wobei das aufgetragene Wasser im Gegenstrom zum fotografischen Material geführt wird.The device of pairs of rollers arranged one above the other can be provided several times, including several times with respect to a tank, the applied water being conducted in countercurrent to the photographic material.

Die erfindungsgemäße Vorrichtung wird in den Figuren 1 und 2 näher beschrieben.The device according to the invention is described in more detail in FIGS. 1 and 2.

Fig. 1 zeigt eine Draufsicht auf die erfindungsgemäße Vorrichtung.Fig. 1 shows a plan view of the device according to the invention.

Fig. 2 zeigt einen Schnitt durch die Vorrichtung nach Fig. 1 entlang der Linie A-A.Fig. 2 shows a section through the device of Fig. 1 along the line A-A.

In Fig. 1 stellt (1) einen Tank innerhalb einer fotografischen Verarbeitungsapparatur dar, z.B. einen Wässerungstank, dessen Wasserniveau nicht gezeigt ist. An einem Gerüst (4) sind übereinander auf Achsen (3) Rollenpaare (2) angebracht, von denen jeweils die vordere Rolle dargestellt ist. Die hintere Rolle liegt parallel zur vorderen Rolle. Am Punkt (6) kann sich ein Zulauf für Waschwasser befinden, durch den auf den höchsten Punkt der Vorrichtung Waschwasser auf das fotografische Material, das in Fig. 1 nicht gezeigt ist, aufgebracht wird. Das Waschwasser kann auf eine Seite oder auf beide Seiten des fotografischen Materials aufgetragen werden. Das Wasser läuft größtenteils die Schräge hinunter, bevor es auf das nächste Rollenpaar kommt, bis es schließlich in den Tank (1) tropft.In Fig. 1, (1) represents a tank within a photographic processing apparatus, e.g. a washing tank, the water level of which is not shown. A pair of rollers (2), of which the front roller is shown, are mounted one above the other on axes (3) on a frame (4). The rear roller is parallel to the front roller. At point (6) there can be an inlet for wash water, through which wash water is applied to the photographic material, which is not shown in FIG. 1, at the highest point of the device. The wash water can be applied to one or both sides of the photographic material. Most of the water runs down the slope before it comes to the next pair of rollers until it finally drips into the tank (1).

Im Querschnitt der Fig. 2 ist mit (5) das fotografische Material gekennzeichnet.In the cross section of FIG. 2, the photographic material is identified by (5).

Vorzugsweise werden 3 bis 100, insbesondere 3 bis 20 Rollenpaare vorgesehen, deren Breite auf das zu verarbeitende fotografische Material abgestimmt ist. Der Rollendurchmesser ist unkritisch; aus Platzgründen wird man Durchmesser zwischen 1 und 10 cm wählen.Preferably 3 to 100, in particular 3 to 20 pairs of rolls are provided, the width of which is matched to the photographic material to be processed. The roll diameter is not critical; for space reasons you will choose a diameter between 1 and 10 cm.

BeispieleExamples Beispiel 1 (Vergleich) Example 1 (comparison)

Ein fotografischer Film der Breite 35 mm durchläuft einen Entwickler, eine Wässerung, ein Bleichbad, eine Wässerung, ein Fixierbad, eine Wässerung und wird schließlich getrocknet.A 35 mm wide photographic film passes through a developer, a wash, a bleach bath, a wash, a fixer, a wash and is finally dried.

Die Zusammensetzung des Bleichbades entspricht folgender Formel: NH4Br 140 g/l (NH4) FeEDTA 70 g/l EDTA-Säure 10 g/l pH 6,0. Die Verweilzeit des Films im Bleichbad beträgt 4 min 20 sek., die Temperatur 37,8°C. Nach dem Bleichbad läuft der Film in einen kleinen Wässerungstank von 0,5 1 Inhalt ein.The composition of the bleach bath corresponds to the following formula: NH 4 Br 140 g / l (NH 4 ) FeEDTA 70 g / l EDTA acid 10 g / l pH 6.0. The residence time of the film in the bleaching bath is 4 min 20 sec., The temperature is 37.8 ° C. After the bleaching bath, the film runs into a small washing tank with a capacity of 0.5 l.

Anschließend durchläuft das Material einen zweiten Wässerungstank von 5,0 l Inhalt.The material then passes through a second washing tank with a capacity of 5.0 l.

Vorschubgeschwindigkeit 5 m/minFeed speed 5 m / min

Wässerungsrate 200 ml/m2 in Wässerungstank 1. Wässerungstank 2 verbleibt ohne Frischwasserzulauf.Washing rate 200 ml / m 2 in washing tank 1. Washing tank 2 remains without fresh water supply.

Nach 30 min waren 5 m2 Film durch die Apparatur gelaufen. Analytisch bestimmt wurde als Maß der Verschleppung vom Bleichbad in die Wässerung der Gehalt an NH4Br im Tank 2.
Tank 2: NH4Br 9,5 g/l
After 30 minutes, 5 m 2 of film had run through the apparatus. The amount of NH 4 Br in tank 2 was analytically determined as the degree of carryover from the bleaching bath into the water.
Tank 2: NH 4 Br 9.5 g / l

Beispiel 2 (erfindungsgemäß) Example 2

Es wird wie im Beispiel 1 verfahren, jedoch wird oberhalb des Tanks 1 an der Auslaufseite des Materials der erfindungsgemäße Abstreifer montiert. Insgesamt 6 Rollenpaare. Rollendurchmesser 2 cm. Der Winkel der Rollenpaare zur Horizontalen beträgt 2°, wobei die Rollenpaare so zueinander angeordnet sind, daß benachbarte Rollenpaare einen Winkel von 4° einschließen (siehe Fig. 1). Länge der Rollen jeweils 5 cm. Weiterhin wurde der Wasserzulauf zu Tank 1 geschlossen und stattdessen 200 ml/m2 auf das obere Rollenpaar getropft. Erst von dem letzten Rollenpaar gelangt das Wasser in den Tank 1.The procedure is as in Example 1, but the scraper according to the invention is mounted above the tank 1 on the outlet side of the material. A total of 6 pairs of rollers. Roll diameter 2 cm. The angle of the roller pairs to the horizontal is 2 °, the roller pairs being arranged with respect to one another in such a way that adjacent roller pairs form an angle of 4 ° (see FIG. 1). Length of the rolls 5 cm each. Furthermore, the water inlet to tank 1 was closed and 200 ml / m 2 was dripped onto the upper pair of rollers instead. The water only reaches tank 1 from the last pair of rollers.

Um die Wirksamkeit der erfindungsgemäßen Apparatur zu demonstrieren, wurde erneut die NH4Br-Konzentration im Tank 2 bestimmt.
Tank 2: NH4Br 1,7 g/l.

Ergebnis:
Bei gleicher eingesetzter Wassermenge ist die Reinigung des Fotomaterials mehr als 5 mal so gut wie ohne den erfindungsgemäßen Abstreifer.
In order to demonstrate the effectiveness of the apparatus according to the invention, the NH 4 Br concentration in tank 2 was determined again.
Tank 2: NH 4 Br 1.7 g / l.
Result:
With the same amount of water used, the cleaning of the photographic material is more than 5 times as good as without the scraper according to the invention.

Claims (4)

  1. A device for processing photographic materials and comprising at least one tank filled with liquid and means for substantially removing the liquid from the photographic material leaving the tank, wherein
    the means comprise a number of superposed and successive pairs of rollers above the level of liquid in the tank, the photographic materials being conveyed between the rollers,
    the rollers in each pair are disposed parallel to one another and
    all the pairs of rollers lie in a vertical plane, characterised in that a supply of liquid is provided at the highest place on the highest pair of rollers.
  2. A device according to claim 1, characterised in that the axes of each pair of rollers are at an angle of 0 to 40° to the horizontal, and in the case of angles deviating from 0° the axes are disposed so that the lowest point of one pair of rollers is below the highest point of the next pair and below the lowest point of the next but one pair and correspondingly the highest point of a pair of rollers is below the lowest point of the next pair and below the highest point of the next pair but one.
  3. A device according to claim 1, characterised in that alternate pairs of rollers are disposed parallel to one another.
  4. A device according to claim 1, characterised in that the rollers in each pair are disposed relative to one another so that they always exert approximately the same pressure on the photographic material, irrespective of the thickness thereof.
EP92104043A 1991-03-23 1992-03-10 Squeezgee mechanism for photographic material Expired - Lifetime EP0505820B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4109670 1991-03-23
DE4109670 1991-03-23
DE4114228A DE4114228A1 (en) 1991-03-23 1991-05-01 FLUID SCREENERS FOR PHOTOGRAPHIC MATERIALS
DE4114228 1991-05-01

Publications (3)

Publication Number Publication Date
EP0505820A2 EP0505820A2 (en) 1992-09-30
EP0505820A3 EP0505820A3 (en) 1993-04-28
EP0505820B1 true EP0505820B1 (en) 1996-09-04

Family

ID=25902193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92104043A Expired - Lifetime EP0505820B1 (en) 1991-03-23 1992-03-10 Squeezgee mechanism for photographic material

Country Status (4)

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US (1) US5414483A (en)
EP (1) EP0505820B1 (en)
JP (1) JPH05100395A (en)
DE (2) DE4114228A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4141192A1 (en) * 1991-12-04 1993-06-09 Agfa-Gevaert Ag, 5090 Leverkusen, De FLUID SCREENERS FOR PHOTOGRAPHIC MATERIALS

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1027090B (en) * 1973-12-20 1978-11-20 Duerr Dental Kg DEVELOPER FOR RADIO GRAPHIC FILM
US3905534A (en) * 1974-08-01 1975-09-16 Pako Corp Photographic processing machine with oppositely canted transport roller
GB1530619A (en) * 1975-12-19 1978-11-01 Polychrome Corp Apparatus for developing offset printing plates
US4650308A (en) * 1985-12-23 1987-03-17 Burbury Robert L Method and apparatus for automatically self-cleaning film processors
DE3609526C1 (en) * 1986-03-21 1987-06-25 Agfa Gevaert Ag Device for developing sheet films
JPS62240970A (en) * 1986-04-14 1987-10-21 Fuji Photo Film Co Ltd Washing device for photosensitive material
US4827312A (en) * 1987-01-30 1989-05-02 Fuji Photo Film Co., Ltd. Image recording apparatus
US4987438A (en) * 1988-06-27 1991-01-22 Konica Corporation Apparatus for processing light-sensitive material
US5097605A (en) * 1989-03-31 1992-03-24 Konica Corporation Photosensitive material processing apparatus
US5168297A (en) * 1989-08-26 1992-12-01 Agfa Gevaert Aktiengesellschaft Countercurrent final treatment system
DE3928331A1 (en) * 1989-08-26 1991-02-28 Agfa Gevaert Ag COUNTER-CIRCUIT TREATMENT DEVICE
US5203846A (en) * 1991-11-12 1993-04-20 A. B. Dick Company Media feed roll apparatus and method for its use

Also Published As

Publication number Publication date
EP0505820A3 (en) 1993-04-28
EP0505820A2 (en) 1992-09-30
DE59207025D1 (en) 1996-10-10
DE4114228A1 (en) 1992-09-24
JPH05100395A (en) 1993-04-23
US5414483A (en) 1995-05-09

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