EP0531234A1 - Vorrichtung zum automatischen Nachfüllen chemischer Bäder auf grund von Verdunstung - Google Patents

Vorrichtung zum automatischen Nachfüllen chemischer Bäder auf grund von Verdunstung Download PDF

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Publication number
EP0531234A1
EP0531234A1 EP92420285A EP92420285A EP0531234A1 EP 0531234 A1 EP0531234 A1 EP 0531234A1 EP 92420285 A EP92420285 A EP 92420285A EP 92420285 A EP92420285 A EP 92420285A EP 0531234 A1 EP0531234 A1 EP 0531234A1
Authority
EP
European Patent Office
Prior art keywords
baths
level
bath
water
evaporation
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.)
Withdrawn
Application number
EP92420285A
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English (en)
French (fr)
Inventor
Philippe Combet
Franck Gerstch
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.)
Kis Photo Industrie SARL
Original Assignee
Kis Photo Industrie SARL
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 Kis Photo Industrie SARL filed Critical Kis Photo Industrie SARL
Publication of EP0531234A1 publication Critical patent/EP0531234A1/de
Withdrawn legal-status Critical Current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
    • G03D3/02—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 relates to a device for continuously monitoring and adjusting the level of different chemical treatment baths of an automatic installation, intended to ensure the development of negative films and their prints. More specifically, the invention relates to a device intended to compensate automatically, in particular with water, for the evaporation of these treatment baths.
  • such an installation comprises two series of baths, respectively a series of baths making it possible to ensure the development of negative films, and another series of baths, intended to ensure the development of the prints thereof, in particular on paper. for the production of photographic prints.
  • These different treatment baths contain chemicals, capable in particular of revealing, bleaching, stabilizing, etc., either the negative film proper, or the prints made on paper.
  • These baths are actually aqueous solutions of chemicals.
  • the operation of such an installation is generally carried out at around 40 ° C., and the interior of the installation is permanently ventilated, in order to evacuate the various chemical fumes that may take place. In this way, significant evaporation of the water contained in the various aqueous solutions of the baths leads to increases in the concentration of chemicals and to drops in level in these baths.
  • the device of the invention aims to overcome these drawbacks and proposes an automatic device for refilling the various chemical treatment baths by adding water, and this permanently and continuously.
  • the invention consists in providing in each of the treatment baths a probe capable of detecting an insufficiency of chemical treatment liquid, and simultaneously to supplement the water level, this additional water thus coming to fill the losses.
  • each of the pumps is provided with a non-return valve, in order to avoid any risk of pollution of one bath by the other.
  • the system is provided with a time delay device, which stops pumping beyond a certain duration, in particular in the case of a tank of one of the completely empty treatment baths, of a stopcock. improperly closed drain, leakage, etc.
  • Figure 1 is a schematic representation of the operation of the device according to the invention.
  • the negative film firstly passes through a chemical bath (1) called "developer”, then a chemical bath (2) for bleaching, a fixing bath (3) and finally two baths (4 and 5) of stabilization or washing.
  • developer chemical bath
  • the exposed paper first undergoes a revelation bath (6), then a bleaching-fixing bath (7), finally three washing baths (8, 4 and 9), the stabilization bath (4) being common to the negative processing series and the paper series in this configuration example.
  • Each of these baths has a probe in the form of an electrode (10), constituting one of the terminals of a bypass loop of an electrical circuit, which plunges into each of the baths when these are at the maximum level.
  • the other terminal is constituted by the ground electrode, formed at the bottom of each of said baths.
  • the different bypass loops, corresponding to the different probes (10) are concentrated at the level of a level management card (11), in connection with a central control unit (12).
  • the various baths mentioned above, with the exception of the baths (4 and 8) are connected, via pipes (24), with a pump respectively (13 to 19), each of said pumps being itself in communication with a water reserve (20), provided with a float switch (21) and a filling pipe (22).
  • the level management card (11) induces the actuation of the corresponding pump (13 to 19), and consequently, the addition of water to said bath, until reinstatement of the circulation of electric current in the loop under consideration, materializing the return of the chemical under consideration to its nominal level.
  • the level management card (11) is supervised by the central unit (12) of the machine. It is the latter, which in this example, authorizes its operation, and manages the information concerning the security relating thereto.
  • each of the pumps (13 to 19) is provided with a non-return valve (23), preventing any return of the liquid contained in one of the baths at the level of all the pumps, and consequently any pollution of one bath by another, or any pollution of the water supply (20) by one of the chemicals in said baths.
  • the reserve (20) is provided with a float switch (21), intended in the event of insufficient water therein to prohibit the activation of the pumps (13 to 19).
  • the device correlatively, in the event, for example, of one of the pipes (24) for conveying water at one of the pumps (13 to 19), of a completely empty tank, or of a tap poorly closed drain, etc., the device is provided with a time delay which, after a certain period, stops the pump and indicates a visual or auditory malfunction.
  • the tanks (4 and 8) are not connected to a pump, their feeding being carried out by successive cascades from the bath (9).
  • This device therefore proves to be particularly advantageous in the context of an automatic installation for developing and printing negative films. Indeed, the evaporation of water due to its operating temperature is compensated by the addition of water. There is therefore no over-concentration in chemicals.
  • This function is therefore particularly interesting in the case of very low or intermittent production. In all cases, it avoids so-called "level fault” problems (which prohibit heating the baths), during the day or in the morning when starting (mainly during program start-ups by clock).
  • This device therefore makes it possible to achieve substantial savings in chemicals in the case of low use, and also ensures an optimum level of quality of the treatment baths, even in the event of very irregular use.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
EP92420285A 1991-09-05 1992-08-28 Vorrichtung zum automatischen Nachfüllen chemischer Bäder auf grund von Verdunstung Withdrawn EP0531234A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9111177 1991-09-05
FR9111177A FR2681157B1 (fr) 1991-09-05 1991-09-05 Dispositif pour controler et compenser automatiquement l'evaporation des bains de traitement photographiques.

Publications (1)

Publication Number Publication Date
EP0531234A1 true EP0531234A1 (de) 1993-03-10

Family

ID=9416813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420285A Withdrawn EP0531234A1 (de) 1991-09-05 1992-08-28 Vorrichtung zum automatischen Nachfüllen chemischer Bäder auf grund von Verdunstung

Country Status (3)

Country Link
EP (1) EP0531234A1 (de)
JP (1) JPH05197114A (de)
FR (1) FR2681157B1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0628870A2 (de) * 1993-06-10 1994-12-14 SAN MARCO IMAGING s.r.l. Gerät zur automatischen Kompensation des Flüssigkeitsniveaus chemischer Behandlungsbädern, insbesondere anwendbar in Entwicklungsmaschinen
EP0649058A1 (de) * 1993-10-15 1995-04-19 Agfa-Gevaert N.V. Fotografischer Flüssigkeitsbehandlungsapparat
EP0683431A1 (de) * 1994-02-15 1995-11-22 Konica Corporation Automatisches Entwicklungsgerät zum Entwickeln fotoempfindlichen Materials
US5576795A (en) * 1994-02-15 1996-11-19 Konica Corporation Automatic processing apparatus for silver halide photographic light-sensitive material
EP0916999A1 (de) * 1997-11-14 1999-05-19 Noritsu Koki Co., Ltd. Verfahren zum Zuführen von Wasser zu einer Behandlungsflüssigkeit und Fotoentwicklungsgerät
WO2000056446A1 (en) * 1999-03-10 2000-09-28 Sequenom, Inc. Systems and methods for performing reactions in an unsealed environment
WO2021021156A1 (en) * 2019-07-31 2021-02-04 Hewlett-Packard Development Company L.P. Evaporation compensation in a fluidic device
WO2021021157A1 (en) * 2019-07-31 2021-02-04 Hewlett-Packard Development Company L.P. Normalizing fluid in a fluidic device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008095A1 (de) * 1978-08-12 1980-02-20 Hoechst Aktiengesellschaft Entwicklerstation für Zweikomponenten -Diazotypiematerial
US4561566A (en) * 1984-02-02 1985-12-31 Lev Slobodnik Auto flow controller
EP0286573A2 (de) * 1987-04-07 1988-10-12 KEIZERS, Sigrid Rückschlagventil für verschmutzte flüssige und gasförmige Medien
EP0355034A2 (de) * 1988-08-19 1990-02-21 Fuji Photo Film Co., Ltd. Photographisches Entwicklungsgerät

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008095A1 (de) * 1978-08-12 1980-02-20 Hoechst Aktiengesellschaft Entwicklerstation für Zweikomponenten -Diazotypiematerial
US4561566A (en) * 1984-02-02 1985-12-31 Lev Slobodnik Auto flow controller
EP0286573A2 (de) * 1987-04-07 1988-10-12 KEIZERS, Sigrid Rückschlagventil für verschmutzte flüssige und gasförmige Medien
EP0355034A2 (de) * 1988-08-19 1990-02-21 Fuji Photo Film Co., Ltd. Photographisches Entwicklungsgerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 1 (P-985)8 Janvier 1990 & JP-A-01 254 959 ( FUJI PHOTO FILM ) 11 Octobre 1989 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0628870A3 (de) * 1993-06-10 1995-07-12 San Marco Imaging Srl Gerät zur automatischen Kompensation des Flüssigkeitsniveaus chemischer Behandlungsbädern, insbesondere anwendbar in Entwicklungsmaschinen.
EP0628870A2 (de) * 1993-06-10 1994-12-14 SAN MARCO IMAGING s.r.l. Gerät zur automatischen Kompensation des Flüssigkeitsniveaus chemischer Behandlungsbädern, insbesondere anwendbar in Entwicklungsmaschinen
US5530511A (en) * 1993-10-15 1996-06-25 Agfa-Gevaert N.V. Photographic liquid processing station
EP0649058A1 (de) * 1993-10-15 1995-04-19 Agfa-Gevaert N.V. Fotografischer Flüssigkeitsbehandlungsapparat
US5576795A (en) * 1994-02-15 1996-11-19 Konica Corporation Automatic processing apparatus for silver halide photographic light-sensitive material
US5570154A (en) * 1994-02-15 1996-10-29 Konica Corporation Automatic developing apparatus, using solid processing agent dissolved in water, for developing a photosensitive material
EP0683431A1 (de) * 1994-02-15 1995-11-22 Konica Corporation Automatisches Entwicklungsgerät zum Entwickeln fotoempfindlichen Materials
EP0916999A1 (de) * 1997-11-14 1999-05-19 Noritsu Koki Co., Ltd. Verfahren zum Zuführen von Wasser zu einer Behandlungsflüssigkeit und Fotoentwicklungsgerät
US6120195A (en) * 1997-11-14 2000-09-19 Noritsu Koki Co., Ltd. Method for supplying water to a treatment liquid and a photo-developing apparatus
WO2000056446A1 (en) * 1999-03-10 2000-09-28 Sequenom, Inc. Systems and methods for performing reactions in an unsealed environment
US6225061B1 (en) 1999-03-10 2001-05-01 Sequenom, Inc. Systems and methods for performing reactions in an unsealed environment
US6485913B1 (en) 1999-03-10 2002-11-26 Sequenom, Inc. Systems and methods for performing reactions in an unsealed environment
WO2021021156A1 (en) * 2019-07-31 2021-02-04 Hewlett-Packard Development Company L.P. Evaporation compensation in a fluidic device
WO2021021157A1 (en) * 2019-07-31 2021-02-04 Hewlett-Packard Development Company L.P. Normalizing fluid in a fluidic device

Also Published As

Publication number Publication date
FR2681157A1 (fr) 1993-03-12
JPH05197114A (ja) 1993-08-06
FR2681157B1 (fr) 1994-06-17

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