EP0829762B1 - Appareil pour le développement de matériau photographique - Google Patents

Appareil pour le développement de matériau photographique Download PDF

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Publication number
EP0829762B1
EP0829762B1 EP96810611A EP96810611A EP0829762B1 EP 0829762 B1 EP0829762 B1 EP 0829762B1 EP 96810611 A EP96810611 A EP 96810611A EP 96810611 A EP96810611 A EP 96810611A EP 0829762 B1 EP0829762 B1 EP 0829762B1
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EP
European Patent Office
Prior art keywords
wall
shell
shells
developed
bodies
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
EP96810611A
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German (de)
English (en)
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EP0829762A1 (fr
Inventor
Simon Joachim
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.)
Gretag Imaging AG
Original Assignee
Gretag Imaging 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 Gretag Imaging AG filed Critical Gretag Imaging AG
Priority to EP96810611A priority Critical patent/EP0829762B1/fr
Priority to DE59610049T priority patent/DE59610049D1/de
Priority to US08/926,480 priority patent/US5870646A/en
Publication of EP0829762A1 publication Critical patent/EP0829762A1/fr
Application granted granted Critical
Publication of EP0829762B1 publication Critical patent/EP0829762B1/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
    • 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 device for developing photographic material according to the preamble of the independent claim.
  • films exposed initially are wet-chemical developed and the developed image fields are then exposed by exposure photographic copying material, usually on photographic paper, copied on. That exposed Photo paper is then also developed using wet chemistry. Is the photo paper as long tape, as is customary in high-performance laboratories, the tape is then in cut individual pictures, the individual components of an order put together and packaged so that it ultimately returns to the client can be.
  • the devices containing the wet chemical development baths are known as so-called film processors or paper processors.
  • the volume such wet chemical baths in processors - the following are simplicity only paper processors discussed - depends largely on which one Throughput (number of images developed per unit of time) of the respective user in which Rule development laboratories.
  • the route must by the paper processor to be long enough so that as many pictures as possible at the same time can be in the paper processor and on the one hand with continuous transport and relatively fast transport speed, on the other hand, the throughput time of the Paper by the paper processor corresponds to the time required for the development (this is predefined). This has relatively large-volume bathrooms and therefore also large-volume paper processors.
  • Paper processors with low volume baths are designed to avoid the large volume ones Baths or processors have already been proposed, e.g. in US-A-5,179,404; US-A-5,309,191; US-A-5,311,235 or in US-A-5,270,762. It is also for the bathrooms but it is also important that the developing liquid is always "fresh" so that the developed liquid Paper images all meet a uniform quality standard. As a consequence, that the low-volume bathrooms in particular are renewed or supplemented from time to time have to. In addition, there has been a brisk movement in the wet chemical baths in the Paper processor has proven to be advantageous, as it keeps getting fresh in this way Development liquid comes into contact with the paper to be developed. It is it is obvious that in the case of bathrooms with less volume, a complete exchange or a The baths must be added at shorter intervals than with larger ones Bathrooms.
  • Show low-volume bathrooms and thus also comparatively low-volume processors usually a very narrow one from the inlet through the interior of the processor to the Outlet extending channel, along which the photo paper to be developed is transported. This happens during the transport along this channel developing photo paper in contact with the developing liquid and is thereby developed. Due to the small volume of the channel on the one hand and the demand for constant circulation of the developing liquid on the other hand arises in the channel comparatively high pressure.
  • the processors In order to withstand this high pressure, the processors have to be mechanical be highly stable. At the same time, they should also ensure safe operation. This primarily means that there should be no paper jams in the processors, it safe transport of the paper along the channel must be guaranteed. In addition, the processors should be as simple as possible in terms of production technology be inexpensive to manufacture.
  • the inventive The device thus comprises two half-shells which can be connected to one another, each of which Half-shell, in turn, comprises two interconnected plates. These are assembled into a half shell and thus one plate forms the Outer wall of the half-shell and the other the inner wall of the half-shell. Also includes the inventive device a central displacement element, which according to the Insert into the interconnected half-shells together with the respective one Inner wall of the half-shells the channel for the photographic material to be developed Are defined. This channel extends between the displacement element and the respective inner wall of the half-shell.
  • This inner wall of the half-shell is essentially formed as a flat surface, while the outer wall means for reinforcing the Inner wall has to prevent deformation of the inner wall by the high Development fluid pressure.
  • Such devices are mechanically highly stable, simple and inexpensive to manufacture and reliable in operation.
  • the both half-shells have the same shape. This means that practically only one Form for the production of the half-shells is required, which further increases the manufacturing outlay reduced.
  • the half-shells are produced using the "twin-sheet method" manufactured. This method allows the production of such in a simple manner Half shells.
  • each half body comprises two together connected plates, which are assembled into a half body, in such a way that one plate forms the outer wall of the half body and the other plate the Inner wall of the half body.
  • the outer wall of the half body is essentially as flat surface formed, while the inner wall means for reinforcing the outer wall has to prevent deformation of the outer wall by the high pressure of the Developing liquid.
  • the means for reinforcing the Outer wall of the half-body as the recesses facing the outer wall Formed inner wall plate At their respective contact surface with the The outer wall-forming plate is the recesses of the plate forming the inner wall connected to the plate forming the outer wall.
  • the two half-bodies particularly preferably have the same shape, which the Manufacture of the half body facilitated, since only one shape is required. Is particularly preferred a device in which the two half bodies are produced by the twin-sheet process are, because this process is a technically simple manufacture of such Half body allows.
  • FIG. 1 shows a basic arrangement of a processor with low volume development liquid bath.
  • Fig. 1 is only for illustration serve the basic functional principle. Some key features of the The device according to the invention is namely not shown in FIG. 1.
  • a tank 1 in which two so-called racks 2 are introduced. Between the respective inner wall of the tank 1 and the respective outer wall of the rack 2 is a narrow channel 3 defines through which the material to be developed, in the case of a Paper processor the photo paper P, transported and by contact with the Development fluid is developed.
  • the photo paper is in Fig.
  • FIG. 2 shows an embodiment of an inventive device in more or less assembled condition in perspective. Also from Fig. 2 are some details are not yet clearly recognizable, but will be explained with the help of the subsequent drawing figures even clearer.
  • Two can be seen in FIG. 2 Tanks connected in series 1. Between two adjacent tanks Transport rollers R1, R2, R3, R4 arranged for four tapes of the photo paper. Between Transport rollers R1 and R2 is another roller LR1 for a first one - preferably endless circumferential - leader belt (not shown) arranged and between the transport rollers R3 and R4 a further role LR2 for a second leader band (also not shown).
  • the rollers R1, R2, R3, R4 arranged between two tanks 1 connected in series for the photo paper and the roles LR1 and LR2 for the leader tape can be done with a conventional, common chain drive (not shown) are driven.
  • the photo paper is threaded through the feed rollers R1 and R2 Tapes of the photo paper (not shown) each by means of a clip to the over the LR1 led leader tape attached.
  • the clip is removed after threading the Stripped of photo paper again.
  • a so-called rack 2 is introduced (as already explained with reference to FIG. 1). By doing 2 such rack 2 has not yet been introduced, it is in the middle tank however already shown in the inserted position and in the rear tank it is still closed Half drawn out.
  • the tank 1 comprises two half-shells 10 and 11 which are connected to each other and thus form the tank 1.
  • the Half-shell 10 shows several depressions 101, which extend over the entire outer wall 100 of the half-shell 10 are distributed. These depressions 101 serve the higher mechanical stability of the half-shell 10, but it will be discussed in more detail.
  • FIG. 3 shows an embodiment of a displacement element or rack 2 in FIG not fully assembled condition.
  • the rack 2 has two side rails 22 and 23 includes, as well as several rods or connecting the side rails 22 and 23 Tubes 24, 25, 26 and 27.
  • On the lower rod 27 are the rollers for the tapes of the Photo paper and intended for the respective leader tape. You are on this pole 27 freely rotating.
  • the displacement body comprising the two half-bodies 20 and 21 shows how to 3 can see several slots 201, they can be seen on the outer wall 200 of the sinker.
  • the slots 201 are used to ensure that the interior of the Displacement body through these slots 201 through the photo paper practically as through development fluid is applied through a nozzle, which on the one hand Adhesion of the photo paper counteracts the displacement body, on the other hand a good one Circulation of the development fluid is beneficial.
  • slots 201 are provided in the areas of the outer wall 200 of the displacement body in which the photo paper to be developed is kept. Where the leader band is only a small longitudinally extending recess 202 provided, but is closed, since the leader tape is not with developing liquid must be applied.
  • the supply of development fluid into the interior of the displacer and to the slots 201 can be such that the rods 25 and 26 are formed as hollow cylindrical tubes, at least in the area of the Slots have through openings. 4 is finally a displacement element or rack 2 shown in the assembled state. Now put that Assembled rack 2 in the assembled tank 1, this results in practice a device as shown in Fig. 2, especially in the middle part, which is yes in Fig. 2 is already shown in the assembled state.
  • Both the half-shells 10 and 11 of the tank 1 and the half-bodies are preferably 20 and 21 of the displacement element or rack 2 using the so-called twin-sheet method manufactured, so they are - as the name of the process suggests - double-walled and made of two plastic plates.
  • twin-sheet method manufactured, so they are - as the name of the process suggests - double-walled and made of two plastic plates.
  • FIGS. 5 and 6 The essential steps of the twin-sheet method can be seen in FIGS. 5 and 6.
  • two preheated thermoplastic sheets P1 and P2 are placed between the Mold halves F1 and F2 inserted (Fig. 5) and heated from the outside until they are continuously plasticized.
  • the mold halves F1 and F2 are then moved together, and the plasticized plates P1 and P2 are in one step with Vacuum NP vacuum-deep-drawn and at the same time high strength at the edges welded together (Fig. 6).
  • Vacuum NP vacuum-deep-drawn Vacuum NP vacuum-deep-drawn and at the same time high strength at the edges welded together
  • FIG. 6 Where special attention to detail or dimensional accuracy is required, for example (as indicated in FIG. 6) by means of a narrow one Needle nozzle NJ overpressure between plates P1 and P2 are generated by feeding of compressed air PP.
  • This compressed air PP also presses the plates from the inside suction against the mold halves F1 and F2 generated from outside by the vacuum NP, whereby the high level of detail is achieved. It does not apply when using the twin sheet process the otherwise usual subsequent joining of the two parts and thus Solvents, welding consumables etc. are superfluous. Material protruding at the edge can be removed mechanically (e.g. by milling).
  • FIGS. 5 and 6 Service The production of a hollow body is described above with the aid of FIGS. 5 and 6 Service.
  • This method can also be used to manufacture both the half-shells 10 and 11 of the tank 1 of the device according to the invention and also for the production of the Half body 20 and 21 of the displacement element or rack 2 are used.
  • the two half-shells 10 and 11 of the tank 1 and the two half-bodies 20 and 21 of the rack 2 have the same shape on. In this case, then for the production of the tank 1 and for the production of the Displacer of the rack 2 only one shape required.
  • the half-shell 10 is made from two plates.
  • the Outer wall 100 of the half-shell 10 is formed by a plate, which several Has depressions 101 (see also Fig. 2).
  • the inner wall 105 is also by a Plate formed.
  • the depressions 101 on the plate forming the outer wall 100 are provided, point to the inner wall 105 and are on their contact surface with the the plate forming the inner wall 105.
  • the depressions 101 thus act as a means to reinforce the plate forming the inner wall 105, thus increase the mechanical Stability significantly.
  • those running in the transverse direction Indentations 102 see also FIG. 2) which accommodate additional fastening elements that can encompass the entire processor.
  • the inner wall 105 is essentially flat Surface is formed.
  • this flat surface is preferably structured, it points So a structure on its surface, indicating a possible sticking of the photo paper this area difficult.
  • the surface has a region 106 curved in the shape of a segment of a circle.
  • rack 2 After rack 2 has been inserted into tank 1, they are at the bottom of rack 2 provided roles for the tapes of the photo paper and for the leader tapes arranged.
  • a quasi-cuboid area 107 can also be seen below this area 106, which opens into the connecting piece 103 (FIG. 2) on the end face of the half-shell 10 which the developing liquid is removed.
  • both half shells 10 and 11 are the same Have shape, they are made with only a single shape. After the two Half shells 10 and 11 are made, they are connected together and form the Tank 1. The connection of the two half-shells can be done using known methods such as Welding, gluing, etc.
  • Fig. 8 is now a half of a half body of the displacement element or rack 2 in to recognize a view.
  • this is the half body 20.
  • slots 201 in the Wall of the half body are provided. Through these slots 201 can in Operation as with a nozzle of developing liquid, what is pressed against the paper on the one hand counteracts adherence of the paper to the displacement body, on the other hand, a circulation of the developing liquid is beneficial.
  • 8 also shows the displacement body 8 shown interrupted, but you can see that the side facing the viewer in the essentially forms a flat surface.
  • the flat surface is preferred structured what a possible sticking of the photo paper on this surface counteracts.
  • the two half-bodies 20 and 21 are also more preferred Made with the help of the twin sheet process already explained.
  • FIGS. 9 and 10 show a section along the line Represent IX-IX or along the line X-X of Fig. 8.
  • the outer wall 200 forming plate of the half body 20 essentially a flat Forms (preferably structured) surface which faces the photo paper during operation.
  • the the plate forming the inner wall 203 is provided with depressions 204 which extend up to reach the outer wall 200 and at its contact surface with the outer wall 200 are connected, similar to the case with the half-shells of the tank 1.
  • This Wells 204 like wells 101 (FIG. 2), increase mechanical Increase the stability of the half-shell 10, the mechanical stability of the half-body 20.
  • FIG. 9 and FIG. 10 two more can be seen on the inner wall 203 Recesse
  • Both half-bodies 20 and 21 preferably have the same shape, so that for Making the half body only one shape is needed.
  • the two half bodies 20 and 21 after their manufacture with inner walls facing each other connected by known methods such as welding, gluing, etc., and thus form the displacement body of the rack 2 Recesses 205 to face each other, so that the displacer after connecting the two half bodies 20 and 21 to the rods 25 and 26 can be pushed on (Fig. 3) and thus the rack 2 can be completed.
  • the rods 25 and 26 (Fig. 3) as hollow cylindrical tubes with Appropriate passage openings should be provided so that through the pipes and development fluid through the openings 201 through the slots Displacement body can get against the photo paper.
  • the slots 201 are in the Production of the half body 20 and 21 does not yet exist, they must be in one separate work step either on the half body before connecting to Displacement body or are produced on the finished displacement body, for example by milling.
  • the rack 2 is then inserted into the tank 1.
  • Fig. 2 where three such Devices are arranged one behind the other, of course there can be more than three Devices, which is usually the case with high-performance laboratories.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)

Claims (8)

  1. Dispositif pour développer un matériau photographique, comportant un dispositif d'amenée et un dispositif d'évacuation du liquide de développement ainsi qu'une entrée (E) et une sortie (A) du matériau à développer et un canal (3) étroit qui s'étend de cette entrée vers la sortie, ainsi que des moyens de transport (R) qui transportent le matériau photographique à développer de l'entrée, à travers le canal, vers la sortie, le matériau à développer venant en contact avec le liquide de développement, pendant le transport à travers le canal, et y étant développé, caractérisé en ce que le dispositif comprend les éléments suivants :
    deux demi-coques (10, 11) pouvant être reliées entre elles, dont chaque demi-coque prise indépendammment comprend deux plaques (100, 101) reliées entre elles qui sont assemblées en une demi-coque, et ainsi une plaque forme la paroi extérieure de la demi-coque et l'autre forme la paroi intérieure de la demi-coque,
    un élément de refoulement (2) central qui, après introduction dans les demi-coques reliées entre elles, définit, avec la paroi intérieure respective des demi-coques, le canal (3) pour le matériau photographique à développer, qui s'étend entre l'élément de refoulement de la paroi intérieure respective de la demi-coque, laquelle est essentiellement réalisée en tant que surface plane, tandis que la paroi extérieure comporte des moyens (101) pour renforcer la paroi intérieure, afin d'empêcher une déformation de la paroi intérieure sous l'effet de la haute pression du liquide de développement.
  2. Dispositif selon la revendication 1, caractérisé en ce que les moyens de renfort de la paroi intérieure de la demi-coque sont réalisés en tant que renfoncements, dirigés vers la paroi intérieure, de la plaque formant la paroi extérieure, lesquels sont reliés, au droit de leur surface de contact respective, à la plaque formant la paroi intérieure.
  3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que les deux demi-coques présentent la même forme.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les demi-coques sont réalisées suivant le procédé twin-sheet.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'élément de refoulement est également constitué de deux demi-corps pouvant être reliés entre eux, chaque demi-corps pris indépendamment comprenant deux plaques reliées entre elles qui sont assemblées en un demi-corps, et ainsi une plaque forme la paroi extérieure du demi-corps et l'autre plaque forme la paroi intérieure du demi-corps, la paroi extérieure du demi-corps étant réalisée sensiblement en tant que surface plane, tandis que la paroi intérieure comporte des moyens pour renforcer la paroi extérieure, afin d'empêcher une déformation de la paroi extérieure, sous l'effet de la haute pression du liquide de développement.
  6. Dispositif selon la revendication 5, caractérisé en ce que les moyens de renfort de la paroi extérieure du demi-corps sont réalisés en tant que renfoncements, dirigés vers la paroi extérieure, de la plaque formant la paroi intérieure, lesquels sont reliés au droit de leur surface de contact respective, à la plaque formant la paroi extérieure.
  7. Dispositif selon l'une des revendications 5 ou 6, caractérisé en ce que les deux demi-corps présentent la même forme.
  8. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les demi-corps sont réalisés suivant le procédé twin-sheet.
EP96810611A 1996-09-13 1996-09-13 Appareil pour le développement de matériau photographique Expired - Lifetime EP0829762B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP96810611A EP0829762B1 (fr) 1996-09-13 1996-09-13 Appareil pour le développement de matériau photographique
DE59610049T DE59610049D1 (de) 1996-09-13 1996-09-13 Vorrichtung zum Entwickeln von fotografischem Material
US08/926,480 US5870646A (en) 1996-09-13 1997-09-10 Apparatus for developing photographic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96810611A EP0829762B1 (fr) 1996-09-13 1996-09-13 Appareil pour le développement de matériau photographique

Publications (2)

Publication Number Publication Date
EP0829762A1 EP0829762A1 (fr) 1998-03-18
EP0829762B1 true EP0829762B1 (fr) 2003-01-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810611A Expired - Lifetime EP0829762B1 (fr) 1996-09-13 1996-09-13 Appareil pour le développement de matériau photographique

Country Status (3)

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US (1) US5870646A (fr)
EP (1) EP0829762B1 (fr)
DE (1) DE59610049D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9703035D0 (en) * 1997-02-14 1997-04-02 Eastman Kodak Co A rack

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059257U (ja) * 1983-09-28 1985-04-24 富士写真フイルム株式会社 処理液タンク
DE3536862A1 (de) * 1985-10-16 1987-04-16 Agfa Gevaert Ag Zum einsetzen eines racks geeigneter behandlungstank fuer fotografisches material
DE3614253C1 (de) * 1986-04-26 1987-08-27 Agfa Gevaert Ag Verfahren und Vorrichtung zur Entwicklung von fotografischem Material
GB9003282D0 (en) * 1990-02-14 1990-04-11 Kodak Ltd Method and apparatus for photographic processing
US5311235A (en) * 1992-03-02 1994-05-10 Eastman Kodak Company Driving mechanism for a photographic processing apparatus
US5270762A (en) * 1992-03-02 1993-12-14 Eastman Kodak Company Slot impingement for a photographic processing apparatus
US5309191A (en) * 1992-03-02 1994-05-03 Eastman Kodak Company Recirculation, replenishment, refresh, recharge and backflush for a photographic processing apparatus
US5179404A (en) * 1992-03-02 1993-01-12 Eastman Kodak Company Anti-web adhering contour surface for a photographic processing apparatus
US5381203A (en) * 1993-05-03 1995-01-10 Eastman Kodak Company Textured surface with canted channels for an automatic tray processor

Also Published As

Publication number Publication date
US5870646A (en) 1999-02-09
DE59610049D1 (de) 2003-02-13
EP0829762A1 (fr) 1998-03-18

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