EP0747766B1 - Einrichtung und Verfahren zum Ermitteln der Menge von Behandlungsflüssigkeit, die aus einem Tank einer Vorrichtung zum Behandeln von fotografischem Material verdunstet - Google Patents
Einrichtung und Verfahren zum Ermitteln der Menge von Behandlungsflüssigkeit, die aus einem Tank einer Vorrichtung zum Behandeln von fotografischem Material verdunstet Download PDFInfo
- Publication number
- EP0747766B1 EP0747766B1 EP96107229A EP96107229A EP0747766B1 EP 0747766 B1 EP0747766 B1 EP 0747766B1 EP 96107229 A EP96107229 A EP 96107229A EP 96107229 A EP96107229 A EP 96107229A EP 0747766 B1 EP0747766 B1 EP 0747766B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tank
- reference container
- water
- supply
- treatment fluid
- 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
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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
- G03D3/02—Details of liquid circulation
- G03D3/06—Liquid supply; Liquid circulation outside tanks
- G03D3/065—Liquid supply; Liquid circulation outside tanks replenishment or recovery apparatus
Definitions
- the invention is based on a device according to the preamble of claim 1 or a method according to the preamble of claim 5, or one Device according to the preamble of claim 6.
- the treatment baths are kept at a relatively high temperature, in order to keep the dwell times in the individual baths as short as possible. This however, causes a large amount of liquid to evaporate from the baths and in this way a corresponding increase in concentration occurs.
- evaporation was compensated for by an operator each time before switching on the device in the morning of each day a quantity of water, which has been determined from experience, each tank added manually. On the one hand, this method was very imprecise and Secondly, did not take evaporation into account during an operating day. So it could happen that the concentration of the individual baths against Evening was no longer within the permitted tolerance range.
- JP-A-01 254959 discloses an apparatus which is a reference container has, which is attached to the outer wall of a treatment tank. On Indicator that makes the liquid level on the outside of the device readable provided in the reference container. Evaporated from the treatment tank Liquid can then according to the drop in the liquid level in the Refill the reference container.
- JP-A-01 254960 discloses an apparatus in which a reference container is also used is provided.
- This reference container has an additional one Refill containers according to the chicken trough principle always at the same level held. To refill liquid evaporated from the treatment tanks, the level in the additional refill container is monitored.
- U.S. Patent 4,937,608 discloses a developing device in which a automatic evaporation compensation is carried out. To the amount of evaporated To determine liquid with sufficient accuracy, the room temperature, measured the room humidity and the temperature of the developer bath. Out These values determine the amount of water that is returned to the tank must become.
- the task is solved by a device with the characteristic features of claim 1 and a method with the characterizing features of claim 7.
- a reference container filled with water eliminates the need for a variety of sensors that are otherwise for air moisture and temperature measurements would have to be used.
- the Reference container has the same conditions as the treatment tank, the two evaporation rates are directly comparable. It is therefore advantageous when the reference container is placed in place within the device similar in terms of temperature, humidity and air movement Is exposed to conditions like the treatment tank itself Water in the reference container, if possible, at the same temperature as the treatment liquid
- the reference container can at least hold in the tank with a side wall have direct contact with a side wall of the tank. In the case of a plastic tank, the reference container can be formed in one piece with it his.
- a particularly quick reaction to temperature changes in the treatment liquid can be achieved if the reference container is in direct contact with the treatment liquid. To do this, it can either be installed in the tank itself be, or it is in the pumping circuit of the treatment liquid involved that he is washed around by the treatment liquid.
- the float switch has in the reference container only an upper switching point.
- the control is then like this designed that with certain actions, for example when switching on or off of the device is fed to the reference container so much water until the float switch is at the upper switching point.
- the treatment tank the amount of water is then added, which - multiplied by the calibration factor - was necessary to refill the reference container.
- the float switch is provided with another lower switching point.
- the filling process is started as soon as the lower switching point is reached.
- This lower switching point is set so that the concentration of the Treatment bath is still in a tolerated range if the water level has reached this lower switching point in the reference container.
- the tank and the reference container are preferably automatically the same Time replenished.
- the tank and the reference tank are provided only with a metering pump.
- the different amounts of water to be supplied can then, for example regulated by different line cross-sections.
- the dosing pump can also have a three-way valve with the inlets be connected for the reference container and the tank, so that a temporal Control is possible.
- the reference container is filled up first until the the upper switching point is reached and the time required for this is offset against the calibration factor, so that the filling time for the treatment tank in this way can be determined.
- the metering performance is designed according to the calibration described above. These dosing pumps can then be put into operation for the same time.
- the developing device shown in Fig. 1 is intended for photographic films and is mainly used in the minilab area.
- the tank 1 contains the Developer, tank 2 the bleaching bath, tank 3 the fixing bath and tank 4 the Stabilizer.
- a washing bath is not provided.
- a corresponding device for the development of photographic paper comes with three treatment tanks which contains developer, bleach fixer and stabilizer. Here too no washing bath is used in the Minilab area.
- the photographic material passes through the different treatment tanks 1 to 4 and is then in the Dryer 5 dehumidifies.
- Each treatment tank is equipped with an inlet 6 and a pair of discharge rollers 7 on the outlet side, with which the photographic Material is conveyed into or out of the treatment liquid. Further deflection and transport rollers are not shown in the figures.
- a reference container 8 filled with water is located directly in the treatment tank 4 appropriate. This container is in roughly the same conditions as the treatment tank 4 subjected. Also the warm air flowing in from the dryer 5 acts on the reference container 8 similarly to the treatment tank 4 out.
- a sensor 9 is attached, each for a switching point has an upper and a lower water level.
- the sensor 9 is with a Controller 11 connected, which controls the metering pumps 13 via the lines 12. These suck water from the reservoir 15 via the lines 14 on.
- the water is supplied to the distributors 17 via the lines 16.
- Each Distributors 17 are each an inlet 18 for the inlet 6 and the outlet side Roller pair 7 assigned to each treatment tank.
- the inlet 18 can be carried out because there is sufficient distribution on the relatively narrow rollers of the water supplied takes place.
- the inlets 18 are advantageously designed as described in FIG. 2.
- a tube 19 is provided which, parallel to the axes of the rollers 6, 7 is attached.
- the tube 19 is on its side facing the rollers Outlet openings 20 provided. This allows an even distribution of water through the roller unit.
- the controller 11 the metering pumps 13 for the each predetermined time in operation. Used for this control example the upper switching point of the sensor 9 only the safety and avoidance of Malfunctions. However, there is also the option in the controller to store no fixed operating times for the metering pumps 13, but only the respective calibration factor with which the operating time of the pumps is calculated leaves. This means that when the lower switching point is reached the control 12 all metering pumps 13 are put into operation. Once in that Reference tank 8 the water level reaches the upper switching point, switches the control unit doses the pump responsible for this container. The measured Operating time of this metering pump is then with the calibration factors for the individual tanks multiplied and thereby the operating time for the remaining metering pumps determined. After this time, the control switches the dosing pumps individually.
- the metering pumps 13 only in Be put into operation when the rollers 6, 7 just no photographic material transport.
- one with the control 11 connected sensor 21, 22 may be provided in front of the rollers 6 of the first treatment tank 1 and after the rollers 7 of the last treatment tank 4. In this way determine whether there is photographic material in the treatment line, or whether it is free.
- the controller 11 decelerates when the water level in the reference container 8 reaches the lower switching point, the start-up of the metering pumps 13 until the sensor 22 on the output side Leakage of the end of the photographic material is detected.
- Development devices which have the sensor 21 only on the input side and each detect when photographic material is supplied to the device becomes. The system then switches from standby to operating mode. This mode is maintained for a certain time, which is necessary to convey the material through the entire device. Is the development device in this time, more material is fed, the counter is reset and the Time starts again. When the time expires, the device switches automatically returns to standby mode.
- this type of development equipment it is easily possible to program the controller 11 in such a way that the dosing pumps are only put into operation in standby mode. In order to here, too, it is certainly avoided that the water supplied with the photographic Material comes into contact and causes quality fluctuations.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photographic Processing Devices Using Wet Methods (AREA)
Description
- Fig. 1
- eine schematische Darstellung eines fotografischen Entwicklungsgerätes und
- Fig. 2
- die Wasserzufuhr für einen Behandlungstank.
Claims (10)
- Einrichtung zum Ermitteln der Menge von Behandlungsflüssigkeit, die aus einem Tank (4) einer Vorrichtung zum Behandeln von fotografischem Material verdunstet, in der das Material in die Behandlungsflüssigkeit eingetaucht wird, mit einem mit Wasser gefüllten Referenzbehälter (8), dadurch gekennzeichnet, daß der Referenzbehälter direkt in dem Tank in der Weise angebracht ist, daß das Wasser etwa den gleichen für die Verdunstung relevanten Bedingungen ausgesetzt ist wie die Behandlungsflüssigkeit.
- Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sich der Referenzbehälter innerhalb der Behandlungsflüssigkeit befindet.
- Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Wasserstand in dem Referenzbehälter durch einen Schwimmerschalter abgefragt wird.
- Einrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der Schwimmerschalter einen unteren und einen oberen Schaltpunkt aufweist.
- Verfahren zum Ermitteln der Menge der aus einem Tank (4) einer Vorrichtung zum Behandeln von fotografischem Material verdunsteten Flüssigkeit, dadurch gekennzeichnet, daß die aus einem mit Wasser gefüllten direkt in dem Tank augebrachten Referenzbehälter (8) verdunstete Flüssigkeitsmenge durch einen Sensor (9) in dem Referenzbehälter erfaßt und dem Referenzbehälter automatisch wieder zugeführt wird und dass die Menge der verdunsteten Behandlungsflüssigkeit über das bekannte Verhältnis der Verdunstungsraten ermittelt und dem Tank automatisch zugeführt wird.
- Vorrichtung zum Behandeln von fotografischem Material mit wenigstens einem mit Behandlungsflüssigkeit gefüllten Tank (4) in den das Material eingetaucht wird, einer Einrichtung nach Anspruch 1 und Mitteln, die dem Tank eine entsprechende Menge Wasser zuführen, dadurch gekennzeichnet, daß die Einrichtung Meßmittel zur Erfassung des Wasserstandes in dem Referenzbehälter aufweist, daß eine Steuerung vorgesehen ist, die aus dem Wasserstand in dem Referenzbehälter die dem Tank zuzuführende Wassermenge ermittelt, wobei die Steuerung so ausgebildet ist, daß dem Tank eine vom Wasserstand im Referenzbehälter abhängige Menge Wasser zugeführt wird, wenn die Vorrichtung ein- und/oder abgeschaltet wird.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Einrichtung eine Wasserzufuhr (16) für den Referenzbehälter aufweist.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß für die Wasserzufuhr zum Tank und zum Referenzbehälter je eine Dosierpumpe (13) vorgesehen ist.
- Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Dosierpumpen so dimensioniert sind, daß sich die Dosiermengen wie die Verdunstungsmengen von Tank und Referenzbehälter verhalten.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß für die Wasserzufuhr zum Tank und zum Referenzbehälter eine Dosierpumpe vorgesehen ist, die entweder mit einem Zulauf (16) für den Tank oder mit einem Zulauf für den Referenzbehälter verbunden ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19521273 | 1995-06-10 | ||
DE19521273A DE19521273C1 (de) | 1995-06-10 | 1995-06-10 | Einrichtung und Verfahren zum Ermitteln der Menge von Behandlungsflüssigkeit, die aus einem Tank einer Vorrichtung zum Behandeln von fotografischem Material verdunstet sowie Vorrichtung zum Behandeln von fotografischem Material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0747766A1 EP0747766A1 (de) | 1996-12-11 |
EP0747766B1 true EP0747766B1 (de) | 2002-11-13 |
Family
ID=7764137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96107229A Expired - Lifetime EP0747766B1 (de) | 1995-06-10 | 1996-05-08 | Einrichtung und Verfahren zum Ermitteln der Menge von Behandlungsflüssigkeit, die aus einem Tank einer Vorrichtung zum Behandeln von fotografischem Material verdunstet |
Country Status (3)
Country | Link |
---|---|
US (1) | US5812898A (de) |
EP (1) | EP0747766B1 (de) |
DE (2) | DE19521273C1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11143041A (ja) * | 1997-11-14 | 1999-05-28 | Noritsu Koki Co Ltd | 処理液の水補充方法及び写真現像機 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4781057A (en) * | 1987-01-16 | 1988-11-01 | Hyfantis Jr George J | Method and apparatus for detecting leaks in a liquid-containing tank |
JPH0769597B2 (ja) * | 1988-04-04 | 1995-07-31 | 富士写真フイルム株式会社 | 処理液槽への給水方法 |
JPH0769598B2 (ja) * | 1988-04-04 | 1995-07-31 | 富士写真フイルム株式会社 | 処理液槽への給水方法 |
JPH0795191B2 (ja) * | 1988-08-19 | 1995-10-11 | 富士写真フイルム株式会社 | 写真現像装置 |
US5124239A (en) * | 1989-11-30 | 1992-06-23 | Fuji Photo Film Co., Ltd. | Method of replenishing photographic processing apparatus with processing solution |
-
1995
- 1995-06-10 DE DE19521273A patent/DE19521273C1/de not_active Expired - Fee Related
-
1996
- 1996-05-08 EP EP96107229A patent/EP0747766B1/de not_active Expired - Lifetime
- 1996-05-08 DE DE59609862T patent/DE59609862D1/de not_active Expired - Fee Related
- 1996-06-07 US US08/660,285 patent/US5812898A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19521273C1 (de) | 1996-07-18 |
US5812898A (en) | 1998-09-22 |
EP0747766A1 (de) | 1996-12-11 |
DE59609862D1 (de) | 2002-12-19 |
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