EP0078769B1 - Bearbeitungsgerät für blatt- oder bahnförmiges, insbesondere photographisches Material - Google Patents

Bearbeitungsgerät für blatt- oder bahnförmiges, insbesondere photographisches Material Download PDF

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Publication number
EP0078769B1
EP0078769B1 EP82810454A EP82810454A EP0078769B1 EP 0078769 B1 EP0078769 B1 EP 0078769B1 EP 82810454 A EP82810454 A EP 82810454A EP 82810454 A EP82810454 A EP 82810454A EP 0078769 B1 EP0078769 B1 EP 0078769B1
Authority
EP
European Patent Office
Prior art keywords
drum
liquid
bath
cavity
chamber
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
Application number
EP82810454A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0078769A1 (de
Inventor
Barrie Anthony Freeman
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.)
Cessione ilford Ltd
Original Assignee
Ciba Geigy 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 Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of EP0078769A1 publication Critical patent/EP0078769A1/de
Application granted granted Critical
Publication of EP0078769B1 publication Critical patent/EP0078769B1/de
Expired legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • G03D3/08—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material
    • G03D3/13—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material for long films or prints in the shape of strips, e.g. fed by roller assembly
    • G03D3/132—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material for long films or prints in the shape of strips, e.g. fed by roller assembly fed by roller assembly

Definitions

  • the invention relates to a processing device of the type described in the preamble of claim 1.
  • Processing solutions such as B. photographic silver halide developer, fixing or bleaching solutions are used in most photographic equipment in the form of baths which are traversed by photographic material or which are applied to the material by means of rotating rollers. In both cases, it is necessary to continuously circulate the bath solution, on the one hand to prevent the formation of stagnant liquid zones or pockets in the bath in which the liquid content of active substances is reduced or exhausted, or in which the bath liquid contains waste products from the Machining reaction is dirty, and on the other hand, to achieve a temperature as uniform as possible in the entire bathroom.
  • the measures known hitherto for this purpose are expensive and form a considerable part of the costs of known small photographic processing devices.
  • Hollow drums have been used in the processing of electrophotographic material to prevent it from adhering to the surface of the drum, which is usually used as an electrode.
  • liquid is pumped from a tube provided centrally in the drum through a large number of openings to the surface of the drum.
  • a hollow, paddled drum is rotated rapidly in a developer bath, causing the drum to act like an impeller pump and causing liquid to emerge from a large number of openings in the drum surface.
  • the processing apparatus according to the invention is particularly useful in processing methods of such photographic sheet material in which sheets of exposed photographic material are passed through a photographic processing bath by means of a rotating drum partially immersed in it to which the sheet material adheres.
  • the processing apparatus according to the invention can also be used in the processing of such web or sheet material, in which the processing solution is transferred from a rotating roller, which takes the solution from a container, to the surface of the web or the sheets.
  • An essential feature of the invention consists, as already said in the characterizing part of claim 1, in the inclusion of a certain amount of bath liquid in the drum in a certain level range of the container, the raising of this amount to a higher level and the outflow of the liquid the drum back into the container at such a higher level.
  • This shift in the amount of liquid causes the liquid in the container to circulate continuously and thus suppresses the formation of the aforementioned “pockets” in the liquid and thus the higher level of contamination or substantial depletion of active substances that occurs in them compared to the other liquid.
  • Preferred embodiments of the processing device according to the invention have at least one of the features listed in subclaims 2 to 7.
  • each of these halves can represent a cavity and one or both cavities can serve to circulate the liquid.
  • each hollow drum there is preferably in each hollow drum half an opening at one drum end, which is located towards and near the partition wall according to the drum circumference, and a second opening at the other drum end, which is likewise close to the drum circumference and diametrically opposite the first-mentioned opening the partition is provided.
  • two of the aforementioned openings are dependent on the direction of rotation of the drum, liquid receiving openings and the other two liquid discharge openings.
  • the volume of the drum chamber in relation to the amount of bath liquid in the container given by the bath level is such that no more than a quarter of the bath liquid enters the drum and that at most a quarter of the chamber volume in the drum is taken up by the inflowing liquid.
  • the liquid level in the container of the processing device is so low that only a small part of the drum is immersed in the liquid at the same time, it is advisable to divide the drum into four cavities with corresponding openings.
  • the drum is rotated, a liquid inlet opening in the drum, which is present on the lower side of the drum, being immersed in the bath in the container in the liquid inlet opening in the drum; Liquid then penetrates from the bath through said opening into the cavity in question in the drum, whereupon when the drum rotates further, the liquid which has penetrated remains trapped in the cavity and, together with this, follows the further rotation of the drum in an upward direction until the level of the liquid in the drum cavity lies above that of the bath liquid in the container.
  • the liquid in the cavity of the drum now flows over to the other side of the drum upon further rotation and can now flow out of the drum cavity again through the second opening on this side of the drum.
  • liquid is removed from the drum on one side of the container, raised and again indicated on the other side of the container, whereby a highly satisfactory circulation of the bath liquid in the container is achieved.
  • the driven drum thus acts practically like a circulation pump.
  • This circulation effect is further increased if two openings are also provided in the cavity in the other half of the drum, which are attached in the opposite sense to the openings of the first half of the drum.
  • a great advantage of the treatment device according to the invention lies in the fact that the slower the rotation of the drum, the more effective the circulation effect becomes, because with slower rotation a larger quantity of liquid can get into the drum cavity, be lifted up in it and released again from it.
  • a very satisfactory circulation of the bath liquid is achieved with a drum rotation of 10 revolutions / minute. This is very economical compared to the required speeds of impeller pumps and other types of liquid circulation pumps, which require either high speeds or high piston strokes to achieve good efficiency.
  • the drum can be made from any suitable material that is resistant to the processing liquids in the container, e.g. B. plastic such as polystyrene or acrylonitrile / butadiene / styrene copolymer, or metal, such as. B. stainless steels.
  • B. plastic such as polystyrene or acrylonitrile / butadiene / styrene copolymer
  • metal such as. B. stainless steels.
  • FIG. 1 The embodiment of a processing device according to the invention shown in FIG. 1 comprises a light-tight outer housing 1, in the interior of which a light-tight container 2, which extends along a longitudinal axis A, is accommodated.
  • the container 2 contains in its lower area a bath 3 of a photographic processing solution, the level 3a of which varies within narrow limits depending on the liquid withdrawn and the liquid flowing back, as indicated by two dashed lines.
  • a drum 4 which can be displaced by means of a drive (not shown) in rotation about its shaft 11 coaxially arranged with the longitudinal axis A of the container, is immersed in the bath 3.
  • the preferably cylindrical drum 4 has a rubber-coated drum surface 4a and a front end wall 30 and a rear end wall 31 (FIG. 2).
  • an inlet 5 for photographic material in sheet or sheet form, which is sealed light-tight by a pivotable flap 7 even when the material is introduced is provided, as well as an outlet 6 on the opposite side for the discharge of the treated material from the treatment device.
  • the Outlet 6 is closed in a light-tight manner by a pivotably arranged outlet flap 8 when its free flap edge 8a is applied to the inner end edge 14a of a guide wall 14 which forms the upper side of the outlet 6.
  • a sheet 27 of photographic paper pivots the outlet flap 8 in the direction of arrow O into an open position in which the sheet 27 carried by the drum 4 bends away from the drum surface 4a due to its inherent rigidity and when its leading edge hits the concavely curved underside the guide wall 14 is directed into the outlet 6 and is thus guided out of the treatment device.
  • a number of guide or pressure rollers 10 are provided around the drum circumference, which are mounted in the end walls 13 of the container.
  • a diametrical partition 15 Inside the drum 4 is divided by a diametrical partition 15 into two semi-cylindrical chambers 21 and 22.
  • its chamber 22 In the position of the drum 4 shown in FIG. 1, its chamber 22 is at the top and, in the rear end wall 31 visible in FIG. 1, has an opening 17 located closely above the partition 15 and near the circumference of the drum 4, while diametrically opposite , also closely above the partition 15, but in the front end wall 30 (and therefore only indicated by dashed lines in FIG. 1) there is a second opening 16 (FIG. 2).
  • the drum chamber 21 also has an opening 18 in the rear drum end wall 31 and an opening 19 in the front drum end wall 30.
  • the opening 17 at the opposite end of the drum 4 now dips below the bath level 3a and a smaller amount of further bath liquid can get into the chamber 22 until the liquid levels 3a and 26a are equalized, if not already Passage of the opening 16 through the bath was the case, or if the rotation of the drum 4 is not so fast that the opening 17 has again moved upward from the bath level 3a before the level compensation between the bath 3 in the container and the liquid 26 could enter chamber 22.
  • the opening 17 has left the bath level 3a in the container 2 during its upward movement, whereby it also passes through its position shown in FIG.
  • liquid begins to flow out of the opening 17 along the rear drum end wall 31 or over this end wall 31 to pour downwards back into the bath 3, the level 26a of the liquid in the chamber 26 falling and preferably all liquid has already been emptied from the chamber 22 before the partition 15 passes through the horizontal position. Should a small amount of liquid still remain in the chamber 22, it would now flow to the opposite side of the chamber and flow out of the opening 16, which is now lower than the opening 17.
  • the opening 19 of the chamber 21 located in the front wall of the container was already immersed in the bath 3 and after the bath liquid had flowed in up to level 25a it had emerged again from the bath level 3a.
  • the amount of bath liquid in the bath 3 is only so large that, when the bath flows through the opening 19, sufficient liquid flows into the drum to form the sump 25 in order to achieve a level adjustment between the levels 3a and 25a.
  • a sheet 27 of photographic material the one on its underside Emulsion layer carries, while its top is free of emulsion, brought with this top in contact with the drum wall 4a and guided around it with the help of the rollers 10, so the circulation flow described above through the bath 3 in the container area below the drum 4 on the
  • the emulsion layer on the underside of the sheet 27 acts on it, always brings new bath liquid to it and leads away active ingredients that have become poorer.
  • the container outlet 6 is closed. As long as this is the case, the sheet 27 can be subjected to several passes through the bath 3. As soon as the sheet 27 has been subjected to the treatment in the bath 3 for the required period of time, the outlet 6 can be opened by pivoting the flap 8, and the finished sheet leaves the treatment device.
  • FIG. 3 shows an embodiment of the treatment device according to the invention which is similar to that shown in FIG. 1, but in which the drum 4 has four chambers 36, 37, 38 and 39, which intersect one another by two mutually perpendicular, intersecting in the longitudinal axis A. Cross walls 15 and 35 are separated. In each of the chambers 36 to 39, two openings are again made, one in the front (not visible in FIG. 3) and the other in the rear end wall 31 of the drum 4. Thus, the chambers 36, 37, 38 and 39 in the openings 40, 43, 45 and 47 in the front drum end wall and the openings 41, 42, 44 and 46 in the rear drum end wall 31.
  • the chamber 36 contains no bath liquid; so it is empty.
  • the chamber 37 is filled with liquid up to level 51.
  • more liquid flows through the opening 43 into the chamber 37 due to the higher level 3a of the bath liquid in the container 2. This has already occurred in the chamber 38 and the level 52 of the liquid flowing into the chamber 38 and that, 3a, of the bath liquid 3 in the container outside the drum 4 have already adjusted to one another.
  • 3a is recommended for a low bath level in container 2, the use of a drum 4 with four chambers 36-39.
  • the four-chamber drum can of course also be used at a higher level 3a of the bath in container 2, without disturbing the desired bath circulation.
  • the pumping efficiency is reduced proportionally at liquid levels above the horizontal central plane running through the longitudinal axis A.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
EP82810454A 1981-11-04 1982-10-29 Bearbeitungsgerät für blatt- oder bahnförmiges, insbesondere photographisches Material Expired EP0078769B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8133188 1981-11-04
GB8133188 1981-11-04

Publications (2)

Publication Number Publication Date
EP0078769A1 EP0078769A1 (de) 1983-05-11
EP0078769B1 true EP0078769B1 (de) 1985-02-20

Family

ID=10525608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810454A Expired EP0078769B1 (de) 1981-11-04 1982-10-29 Bearbeitungsgerät für blatt- oder bahnförmiges, insbesondere photographisches Material

Country Status (4)

Country Link
US (1) US4444480A (enrdf_load_stackoverflow)
EP (1) EP0078769B1 (enrdf_load_stackoverflow)
JP (1) JPS58100848A (enrdf_load_stackoverflow)
DE (1) DE3262447D1 (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8408055D0 (en) * 1984-03-29 1984-05-10 Ciba Geigy Ag Processing apparatus
FR2563020B1 (fr) * 1984-04-13 1986-08-14 Arhuero Expl Brevets Rotation sans resistance d'un rouleau dans un liquide, applicable principalement aux machines de traitement des emulsions dans le domaine photographique et cinematographique
JPH0664324B2 (ja) * 1987-09-25 1994-08-22 富士写真フイルム株式会社 感光材料処理装置
GB2302414B (en) * 1995-06-16 1999-05-19 Kodak Ltd Method of processing photographic material and photographic processing apparatus
GB0023091D0 (en) * 2000-09-20 2000-11-01 Eastman Kodak Co Processing photographic material
GB0026950D0 (en) * 2000-11-03 2000-12-20 Eastman Kodak Co Processing photographic material
GB0031180D0 (en) 2000-12-21 2001-01-31 Eastman Kodak Co Processing apparatus
GB0116800D0 (en) * 2001-07-10 2001-08-29 Eastman Kodak Co Processing apparatus
GB0130184D0 (en) * 2001-12-18 2002-02-06 Eastman Kodak Co Low volume drum processor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623416A (en) * 1968-06-24 1971-11-30 Claes Johan Anderberg Processing system for photographic material
DE2010736C3 (de) * 1969-03-08 1973-12-06 Canon K.K., Tokio Vorrichtung zum Entwickeln von Kopien
NL6909655A (enrdf_load_stackoverflow) * 1969-06-24 1970-12-29
US3727535A (en) * 1970-09-25 1973-04-17 R Streeter Photographic processing apparatus
DE2048302A1 (de) * 1970-10-01 1972-04-06 Autopan Heimerdinger & Stäbler oHG, 7021 Oberaichen Gerät zum Entwickeln und Nachbehandeln von photografischem Entwicklungsgut
JPS4841071U (enrdf_load_stackoverflow) * 1971-09-16 1973-05-25
GB1494737A (en) * 1975-03-12 1977-12-14 Wilkinson Photo Prod Ltd Sheet film holder for a rotary drum-type photographic processor
DE2615932A1 (de) * 1976-04-10 1977-10-20 Edmund Klein Im durchlaufverfahren arbeitende entwicklungs- und bearbeitungsmaschine fuer fotografisch-chemische negativ- und positivprozesse
FR2382030A1 (fr) * 1977-02-23 1978-09-22 Deboute Valentin Machine pour developper des epreuves photographiques en couleur a la lumiere
US4269501A (en) * 1979-09-12 1981-05-26 Griffith Glen A Drum for an automatic photographic processing system

Also Published As

Publication number Publication date
DE3262447D1 (en) 1985-03-28
US4444480A (en) 1984-04-24
EP0078769A1 (de) 1983-05-11
JPH0480376B2 (enrdf_load_stackoverflow) 1992-12-18
JPS58100848A (ja) 1983-06-15

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