EP0505820B1 - Mécanisme d'essorage pour matériau photographique - Google Patents

Mécanisme d'essorage pour matériau photographique Download PDF

Info

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
Authority
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
Other languages
German (de)
English (en)
Other versions
EP0505820A2 (fr
EP0505820A3 (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
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
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0505820A2 publication Critical patent/EP0505820A2/fr
Publication of EP0505820A3 publication Critical patent/EP0505820A3/de
Application granted granted Critical
Publication of EP0505820B1 publication Critical patent/EP0505820B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D15/00—Apparatus for treating processed material
    • G03D15/02—Drying; 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.

Landscapes

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

Claims (4)

  1. Dispositif pour le traitement de matériaux photographiques, comportant au moins un récipient rempli d'un liquide et des moyens qui éliminent largement le liquide du matériau photographique quittant le récipient, dans lequel
    ces moyens sont constitués de plusieurs paires de rouleaux qui se suivent l'une au-dessus l'autre, sont prévues au-dessus du niveau du liquide du récipient, rouleaux entre lesquels on fait passer les matériaux photographiques,
    les rouleaux de chaque paire de rouleaux sont disposés parallèlement l'un à l'autre et toutes les rouleaux sont situés dans un plan vertical,
    caractérisé
    par le fait qu'une arrivée de liquide est prévue au point le plus haut de la paire de rouleaux disposée le plus haut.
  2. Dispositif selon la revendication 1, caractérisé par le fait que les axes de chaque paire de rouleaux font un angle de 0 à 40° par rapport à l'horizontale, dispositif dans le cas duquel, en présence d'angles s'écartant de 0°, ils sont formés de façon que le point le plus bas d'une paire de rouleaux se trouve sous le point le plus haut de la suivante et sous le point le plus bas de la paire de rouleaux située immédiatement au-dessus et, de la même façon, le point le plus haut d'une paire de rouleaux se trouve sous le point le plus bas de la suivante et sous le point le plus haut de la paire de rouleaux située immédiatement au-dessus.
  3. Dispositif selon la revendication 1, caractérisé par le fait que les paires de rouleaux respectivement situées immédiatement au-dessus sont disposées parallèlement l'une à l'autre.
  4. Dispositif selon la revendication 1, caractérisé par le fait que les rouleaux d'une paire de rouleaux sont disposés, l'un par rapport à l'autre, de façon qu'indépendamment de l'épaisseur du matériau photographique, ils exercent toujours la pression approximativement identique sur le matériau.
EP92104043A 1991-03-23 1992-03-10 Mécanisme d'essorage pour matériau photographique Expired - Lifetime EP0505820B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4109670 1991-03-23
DE4109670 1991-03-23
DE4114228A DE4114228A1 (de) 1991-03-23 1991-05-01 Fluessigkeitsabstreifer fuer fotografisches material
DE4114228 1991-05-01

Publications (3)

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

Family

ID=25902193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92104043A Expired - Lifetime EP0505820B1 (fr) 1991-03-23 1992-03-10 Mécanisme d'essorage pour matériau photographique

Country Status (4)

Country Link
US (1) US5414483A (fr)
EP (1) EP0505820B1 (fr)
JP (1) JPH05100395A (fr)
DE (2) DE4114228A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4141192A1 (de) * 1991-12-04 1993-06-09 Agfa-Gevaert Ag, 5090 Leverkusen, De Fluessigkeitsabstreifer fuer fotografisches material

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1027090B (it) * 1973-12-20 1978-11-20 Duerr Dental Kg Sviluppatrice per pellicole radio grafiche
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 (de) * 1986-03-21 1987-06-25 Agfa Gevaert Ag Geraet zur Entwicklung von Blattfilmen
JPS62240970A (ja) * 1986-04-14 1987-10-21 Fuji Photo Film Co Ltd 感光材料水洗装置
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 (de) * 1989-08-26 1991-02-28 Agfa Gevaert Ag Gegenstromschlussbehandlungsvorrichtung
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
DE59207025D1 (de) 1996-10-10
JPH05100395A (ja) 1993-04-23
EP0505820A2 (fr) 1992-09-30
EP0505820A3 (en) 1993-04-28
DE4114228A1 (de) 1992-09-24
US5414483A (en) 1995-05-09

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