EP0855048B1 - Method and device for testing a photographic film - Google Patents

Method and device for testing a photographic film Download PDF

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Publication number
EP0855048B1
EP0855048B1 EP96934657A EP96934657A EP0855048B1 EP 0855048 B1 EP0855048 B1 EP 0855048B1 EP 96934657 A EP96934657 A EP 96934657A EP 96934657 A EP96934657 A EP 96934657A EP 0855048 B1 EP0855048 B1 EP 0855048B1
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EP
European Patent Office
Prior art keywords
film
state
light
signal
photosensor
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Expired - Lifetime
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EP96934657A
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German (de)
French (fr)
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EP0855048A1 (en
Inventor
Helmut Zangenfeind
Reinhart WÜRFEL
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Agfa Gevaert AG
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Agfa Gevaert AG
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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
    • G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
    • G03D13/003—Film feed or extraction in development apparatus
    • G03D13/005—Extraction out of a cassette and splicing of the film before feeding in a development apparatus

Definitions

  • the invention is based on a method according to the preamble of claim 1 and a device according to the preamble of claim 8.
  • the films When processing photographic films in large laboratories, the films removed from the film cartridge in a so-called splicer and into a long one Tape stuck together. To do this, the rear end of a film and the leading end of the subsequent film is positioned in a gluing station that the ends can be connected with an adhesive label. equipment of this type are, for example, in DE OS 38 33 468 or EP OS 212 134. The films are usually positioned in the gluing station with infrared light barriers.
  • a splicer suitable for these films can now be used in dark room as well previously common to glue the unexposed films together into a tape which is then developed in a development machine.
  • Such can also Splicers but also in bright room operation are used for films of which Reorders are to be made to stick together to a tape, which, however, no longer develops but only copies becomes. If an error occurs during the pre-sorting of the cartridges delivered, so that, for example, an already developed film on the still undeveloped Filming or vice versa, this can lead to the destruction of each wrong sorted film.
  • an already developed film at one repeated development fades very strongly, is a not yet developed Film that was wrongly assigned to the already developed films by the Processing in the splicer in bright room operation exposed and thus perfect destroyed.
  • a camera is disclosed in the unpublished US 5,521,662.
  • In the Description is an infrared transmitted light sensor mentioned, which has different Transmission rates determine whether the film is developed.
  • the object is achieved by a method having the features of claim 1 and claim 7 and an apparatus having the features of claims 8 and Claim 12.
  • the invention assumes that a developed film in particular in the infrared wavelength range, in which most standard light barrier modules work, is practically fully permeable. It is therefore for one such infrared transmitted light sensor can not be determined whether there is no film or an already developed film is between the light source and the photo sensor. It is therefore first determined with a second detector whether a Film is in the film guide. Only when this is ensured can a Infrared light barrier to determine whether the film is transparent to infrared or is blocking. In the former case it is a developed and in the latter case an undeveloped film.
  • the presence of the film can, for example, with a mechanical Button to be checked, which is attached so that the leading edge of the film flipped a gear lever.
  • a pneumatic solution would be preferable.
  • an air pressure sensor to be attached to the other side of the film guide so that the reduction of the pressure can be measured if there is a film between the air nozzle and the pressure sensor pushes.
  • a heating resistor could also be used instead of the pressure sensor whose electrical resistance changes with temperature. The resistance is no longer blown on because there is a film in the lead temperature increases and the resistance changes accordingly.
  • the presence of a film with an infrared reflex light barrier is preferred certainly.
  • This inexpensive standard component is attached so that the light is directed against the reflective back of the film.
  • the light barrier is also a developed one that is inherently transparent to infrared Film noticeable.
  • the determination of the state of development of a film is also included only one light barrier possible, the light in the green or blue wavelength range (420 - 580 nm) was used. Particularly suitable as a light source here an LED with a wavelength of 569 nm. At this wavelength the three possible states namely "no film”, “undeveloped film” and “developed film” can be clearly distinguished. While for the condition “no Film "practically a 100% light transition can be measured locks up undeveloped film almost completely, so that no light transition can be measured. A developed film is very clearly in the area between these two extremes, so that all three states can be distinguished here.
  • Sensor 1 in FIG. 1 is preferably a photodiode an infrared reflex light barrier with a threshold switch designed in this way is that there is only a signal at input 4 if it is certain that that there is some film on the tour.
  • the sensor 2 assigned light barrier works in the infrared range, but is in contrast designed as a transmitted light sensor to the reflex light barrier.
  • the Threshold switch of sensor 2 is set so that no input 5 Signal is present when it is certain that there is an undeveloped film in the guide located.
  • the controller 3 has two inputs, one of which is the input 4 is connected to sensor 1 and input 5 to sensor 2. Farther the control is provided with the outputs 6, 7, 8, for corresponding Control purposes are usable. The outputs are via the logic elements 9, 10 driven.
  • FIG. 3 A film guide with a corresponding sensor system is shown in FIG. 3.
  • the Film 12 is here through a guide system, not shown, through the guide 14 pushed in the direction of arrow A.
  • the reflex light barrier 23 exists from the light source 21 and the photo sensor 1, both on the same side the film guide 14 are arranged. Consequently, the photo sensor 1 only receives then light when the light emitted from the light source 21 from the film 12 is reflected.
  • the transmitted light sensor 24 has a light source 22 and a photo sensor 2 on opposite sides of the film guide 14.
  • the photosensor 2 then delivers a signal if either there is no film 12 in the Guide 14 is located and the light emitted by the light source 22 directly Sensor 2 reached, or if an already developed film is in the guide 14 because it is transparent in the infrared range. So it's at entrance 5 only if there is an undeveloped film in the guide 14 located.
  • the logic element 9 in the controller 3 of FIG. 1 is designed so that when there is no signal at input 4, a voltage is applied to output 6. If this state is illustrated in FIG. 3, this means that none Film 12 is present in the guide 14, at least that the leading edge 13 of a film 12 is not yet in the area of the reflex light barrier 23.
  • the photo sensor 2 receives the light emitted by the light source 22 there developed films are practically transparent in the infrared wavelength range. In this case there is a signal at input 5. Receives the logic element 10 a signal via connection 11 and input 5 is also present Signal at output 7, while there is no signal at outputs 6 and 8. In the event that film 12 is not yet developed The photo sensor 2 does not receive any film that has a blocking effect in the infrared range Light so that there is no signal at input 5. In this case (signal on connection 11, no signal at input 5) there is a signal at output 8. In this There is no signal at outputs 6 and 7.
  • the controller 3 can also be viewed as a logic module with two inputs and three outputs. In order to achieve clear results here, it is ideal to position the transmitted light sensor 24 in such a way that it acts on the edge of the film 12 which is opposite the reflected light sensor 23.
  • the switching logic of the controller 3 can be found in the table below.
  • An X stands for an applied signal and a circle for no signal.
  • Entrance 4 Entrance 5 Exit 6
  • Exit 7 Exit 8 Status X O O O X Film not developed O X X O O Not a movie X X O X O Film developed
  • a photo sensor 30 is provided which operates in the blue-green wavelength range.
  • the sensor 30 delivers a signal proportional to the incident light.
  • the Control 33 which in turn has three outputs 36, 37, 38, thus has only a single input 34.
  • the controller 33 contains two setpoint devices 35 and 39 and two comparison elements 31, 32.
  • the by the setpoint generator 35 The value provided corresponds to approximately 90% of that at the entrance 34 applied signal when there is no film in the guide 14.
  • the value provided by the setpoint generator 39 corresponds approximately 10% of this signal. Both setpoints can be changed according to the Power of the light source of the detector device in the meantime again and again be compared.
  • the signal at input 34 is greater than the signal from the setpoint generator 35, there is a signal at output 36. In this case it is also due to Output of the comparator 32 a signal because that over the connection 40 tapped signal is also greater than the signal of the setpoint generator 39 is.
  • the AND gate 42 thus receives a signal from the comparison gate 32 while there is no signal from the NOT gate 41. This is also due to the exit 37 no signal on.
  • the output 38 also remains via the NOT link 43 without signal.
  • the signal is at input 34 smaller than the signal of the setpoint generator 35, but larger than the signal of the Setpoint generator 39. This means that no signal is connected to output 36, whereas a signal is present at the output of the comparator 32. There now too a signal from the NOT gate 41 to the AND gate 42 switches it a signal on the output 37. The non-gate 43 is in turn no signal at output 38.
  • the signal is at the entrance 34 smaller than the signal of the setpoint generator 39 Output of the comparator 31 compared to the previously described case there is no change, there is now no output at the comparator 32 Signal on. So there is no signal at the output 37, whereas the NOT element 43 at the output 38 there is now a signal.
  • the detector device would have to be used Eliminate 23.
  • the light source 22 of the detector device 24 should then be such that they emit light in the blue-green wavelength range emitttiert.
  • a film that has not yet been developed is sensitive to light in this wavelength range and thus when testing with a device according to this embodiment generate a latent image of the light source on the film it would be advantageous to design the light source to be on the film creates a certain pattern. For example, one laboratory could do this imprint his mark on the beginning of the film.
  • FIGS. 1 and 2 can also be used as software realize. Corresponding flow diagrams are shown in Figures 4 to 6.
  • FIG. 4 shows the output signal of sensor 1 under reference number 51 queried. As long as the sensor does not emit a signal, the program will continue reset. Only when the query at 51 shows a positive result, is the reference signal 52 also queries the output signal of sensor 2. If there is no signal here, there is a developed film in the Leadership 14. This decision is marked 57. However, if on If sensor 2 has a signal, the film detected is a not yet developed film. This decision is made at 58.
  • the sensor 2 can also be queried first. This query is again provided with the reference number 52. There is no sensor 2 Signal on, it can be decided immediately under 58 that a undeveloped film located in the guide 14. If there is a signal, however, is again the sensor 1 is queried under the reference symbol 51. There is no here Signal on, there is at least no film in the area of this sensor. The program is therefore reset and the query starts again. If, on the other hand, there is a signal at sensor 1, the decision can now be made under 57 be that this is a developed film.
  • the signal at sensor 2 is greater than a threshold value that is approximately 90% of the signal which is present at the sensor 2 when there is no film in the Leadership is. If the signal at sensor 2 is greater than this threshold value, means this is that in fact there is no film in the lead and the program will be reset. However, if the signal at sensor 2 is smaller, it will be below the Reference numeral 59 compared with a second threshold. This threshold is only 10% of the signal that is present at sensor 2 when no film is in the guide. If the signal is greater than this threshold, it is decided in 57 that it is a developed film. Is it however, smaller, the decision is made under 58 on an undeveloped film.
  • inventive method and the inventive device are not only applicable to the devices mentioned here, but can be used anywhere be used where the wrong handling of a film - be it developed now or undeveloped - lead to an irretrievable loss for the customer would.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Projection-Type Copiers In General (AREA)

Description

Die Erfindung geht aus von einem Verfahren nach dem Oberbegriff von Anspruch 1 und einer Vorrichtung nach dem Oberbegriff von Anspruch 8.The invention is based on a method according to the preamble of claim 1 and a device according to the preamble of claim 8.

Bei der Verarbeitung von fotografischen Filmen in Großlabors werden die Filme in einem sogenannten Splicer der Filmpatrone entnommen und zu einem langen Band zusammengeklebt. Hierzu muß jeweils das hintere Ende eines Films und das vordere Ende des nachfolgenden Films so in einer Klebestation positioniert werden, daß die Enden mit einem Klebeetikett verbunden werden können. Geräte dieser Art sind beispielsweise in der DE OS 38 33 468 oder der EP OS 212 134 beschrieben. Die Positionierung der Filme in der Klebestation erfolgt üblicherweise mit Infrarot-Lichtschranken.When processing photographic films in large laboratories, the films removed from the film cartridge in a so-called splicer and into a long one Tape stuck together. To do this, the rear end of a film and the leading end of the subsequent film is positioned in a gluing station that the ends can be connected with an adhesive label. equipment of this type are, for example, in DE OS 38 33 468 or EP OS 212 134. The films are usually positioned in the gluing station with infrared light barriers.

In der US-PS 5,093,686 ist ein Filmsystem und eine Labororganisation beschrieben, bei der der Film nach dem Entwickeln und dem Kopieren wieder in die Patrone zurückgespult wird und so mit den fertigen Papierbildern an den Kunden ausgeliefert wird. Dies führt nun aber zu dem Problem, daß dem Labor angelieferten Filmpatronen nicht mit Sicherheit zu entnehmen ist, ob sich in ihnen ein noch unentwickelter Film oder ein bereits entwickelter Film befindet, von dem lediglich Nachbestellungen gemacht werden sollen.A film system and a laboratory organization are described in US Pat. No. 5,093,686. where the film after developing and copying back into the cartridge is rewound and so with the finished paper pictures to the customer is delivered. However, this now leads to the problem that the laboratory delivered Film cartridges cannot be seen with certainty whether there is any in them still undeveloped film or an already developed film of which only repeat orders should be made.

Ein für diese Filme geeigneter Splicer kann nun im Dunkelraumbetrieb, wie auch bisher üblich, die unbelichteten Filme zu einem Band zusammenkleben, welches danach in einer Entwicklungsmaschine entwickelt wird. Ebenso kann ein solcher Splicer aber auch im Hellraumbetrieb dazu verwendet werden Filme, von denen Nachbestellungen angefertigt werden sollen, zu einem Band zusammenzukleben, welches hinterher jedoch nicht mehr entwickelt sondern nur noch kopiert wird. Sollte bei der Vorsortierung der angelieferten Patronen ein Fehler passieren, so daß beispielsweise ein bereits entwickelter Film zu den noch unentwickelten Filmen oder umgekehrt gelangt, kann dies zur Zerstörung des jeweils falsch einsortierten Filmes führen. Wärend ein bereits entwickelter Film bei einer nochmaligen Entwicklung sehr stark ausbleicht, wird ein noch nicht entwickelter Film, der fälschlich den bereits entwickelten Filmen zugeordnet wurde durch die Bearbeitung im Splicer bei Hellraumbetrieb belichtet und somit vollkommen zerstört.A splicer suitable for these films can now be used in dark room as well previously common to glue the unexposed films together into a tape which is then developed in a development machine. Such can also Splicers but also in bright room operation are used for films of which Reorders are to be made to stick together to a tape, which, however, no longer develops but only copies becomes. If an error occurs during the pre-sorting of the cartridges delivered, so that, for example, an already developed film on the still undeveloped Filming or vice versa, this can lead to the destruction of each wrong sorted film. During an already developed film at one repeated development fades very strongly, is a not yet developed Film that was wrongly assigned to the already developed films by the Processing in the splicer in bright room operation exposed and thus perfect destroyed.

In der nicht vorveröffentlichten US 5,521,662 ist eine Kamera offenbart. In der Beschreibung ist ein Infrarot-Durchlicht-Sensor erwähnt, der über unterschiedliche Transmissionsraten feststellt ob der Film entwickelt ist.A camera is disclosed in the unpublished US 5,521,662. In the Description is an infrared transmitted light sensor mentioned, which has different Transmission rates determine whether the film is developed.

Es war die Aufgabe der Erfindung, bereits zu einem sehr frühen Zeitpunkt im Labor anhand des Filmes zuverlässig festzustellen, ob es sich hierbei um einen entwickelten oder einen unentwickelten Film handelt.It was the object of the invention, at a very early point in time Laboratory to reliably determine from the film whether this is a developed or an undeveloped film.

Die Aufgabe wird gelöst durch ein Verfahren mit den Merkmalen von Anspruch 1 und Anspruch 7 und eine Vorrichtung mit den Merkmalen von Anspruch 8 und Anspruch 12. Die Erfindung geht davon aus, daß ein entwickelter Film insbesondere im infraroten Wellenlängenbereich , in dem die meisten Standardlichtschrankenmodule arbeiten, praktisch voll durchlässig ist. Es ist daher für eine solche Infrarot-Durchlicht-Lichtschranke nicht feststellbar, ob sich kein Film oder ein bereits entwickelter Film zwischen der Lichtquelle und dem Fotosensor befindet. Es wird daher mit einem zweiten Detektor zuerst festgestellt ob sich ein Film in der Filmführung befindet. Erst wenn dies sichergestellt ist kann über eine Infrarot-Lichtschranke festgestellt werden ob der Film infrarotdurchlässig oder- sperrend ist. Im ersteren Fall handelt es sich dann um einen entwickelten und im letzteren Fall um einen unentwickelten Film. The object is achieved by a method having the features of claim 1 and claim 7 and an apparatus having the features of claims 8 and Claim 12. The invention assumes that a developed film in particular in the infrared wavelength range, in which most standard light barrier modules work, is practically fully permeable. It is therefore for one such infrared transmitted light sensor can not be determined whether there is no film or an already developed film is between the light source and the photo sensor. It is therefore first determined with a second detector whether a Film is in the film guide. Only when this is ensured can a Infrared light barrier to determine whether the film is transparent to infrared or is blocking. In the former case it is a developed and in the latter case an undeveloped film.

Das Vorhandensein des Films kann beispielsweise mit einem mechanischen Taster überprüft werden, der so angebracht ist, daß die Vorderkante des Films einen Schalthebel umlegt. Da hierbei unter Umständen jedoch Kratzer auf dem Film verursacht werden könnten. wäre eine pneumatische Lösung vorzuziehen. Hier besteht die Möglichkeit, an der Filmführung eine Luftdüse anzuordnen und den Staudruck zu messen. Befindet sich der Film direkt vor der Düsenöffnung, so steigt der Staudruck sprunghaft an. Ebenso wäre es möglich einen Luftdrucksensor auf der anderen Seite der Filmführung anzubringen, so daß die Verringerung des Drucks meßbar wird wenn sich ein Film zwischen Luftdüse und Drucksensor schiebt. Statt des Drucksensors könnte ebenso ein Heizwiderstand verwendet werden, dessen elektrischer Widerstand sich mit der Temperatur ändert. Wird der Widerstand nicht mehr angeblasen, weil sich ein Film in der Führung befindet, so erhöht sich seine Temperatur und der Widerstand ändert sich dementsprechend.The presence of the film can, for example, with a mechanical Button to be checked, which is attached so that the leading edge of the film flipped a gear lever. However, there may be scratches on the Film could be caused. a pneumatic solution would be preferable. Here it is possible to arrange an air nozzle on the film guide and to measure the dynamic pressure. If the film is right in front of the nozzle opening, the dynamic pressure rises suddenly. It would also be possible to use an air pressure sensor to be attached to the other side of the film guide so that the reduction of the pressure can be measured if there is a film between the air nozzle and the pressure sensor pushes. A heating resistor could also be used instead of the pressure sensor whose electrical resistance changes with temperature. The resistance is no longer blown on because there is a film in the lead temperature increases and the resistance changes accordingly.

Da der Film, wie er in der US-PS 5,093,686 beschrieben ist, eine Magnetschicht aufweist, besteht auch die Möglichkeit das Vorhandensein des Films über einen Magnetlesekopf zu bestimmen.Because the film as described in U.S. Patent No. 5,093,686 is a magnetic layer , there is also the possibility of the film being available via a Determine magnetic read head.

Vorzugsweise wird das Vorhandensein eines Films mit einer Infrarot-Reflex-Lichtschranke bestimmt. Dieses preiswerte Standartbauteil wird so angebracht, daß das Licht gegen die spiegelnde Rückseite des Films gerichtet wird. Mit dieser Lichtschranke ist also auch ein entwickelter, an und für sich infrarotdurchlässiger Film feststellbar.The presence of a film with an infrared reflex light barrier is preferred certainly. This inexpensive standard component is attached so that the light is directed against the reflective back of the film. With this The light barrier is also a developed one that is inherently transparent to infrared Film noticeable.

Wenn mit Sicherheit bestimmt wurde, daß sich ein Film in der Führung befindet, so kann mit Hilfe einer Infrarot-Durchlicht-Lichtschranke bestimmt werden, ob der Film bereits entwickelt ist. In diesem Fall sind die beiden möglichen Zustände "durchlässig" oder "undurchlässig" ausreichend für diese Bestimmung.If it is determined with certainty that there is a film on the guide, So it can be determined with the help of an infrared transmitted light sensor whether the Film is already developed. In this case, the two possible states are "permeable" or "impermeable" sufficient for this determination.

Die Bestimmung über den Entwicklungszustand eines Films ist jedoch auch mit nur einer Lichtschranke möglich, die Licht im grünen oder blauen Wellenlängenbereich (420 - 580 nm) verwendet. Als Lichtquelle eignet sich hier insbesondere eine LED mit einer Wellenlänge von 569 nm. Bei dieses Wellenlänge können die drei möglichen Zustände nämlich "kein Film", "nicht entwickelter Film" und "entwickelter Film" deutlich unterschieden werden. Wärend für den Zustand "kein Film" praktisch ein 100 %iger Lichtübergang gemessen werden kann sperrt ein unentwickelter Film fast vollständig, so daß kein Lichtübergang zu messen ist. Ein entwickelter Film liegt sehr deutlich im Bereich zwischen diesen beiden Extremen, so daß hier gut alle drei Zustände unterschieden werden können.The determination of the state of development of a film is also included only one light barrier possible, the light in the green or blue wavelength range (420 - 580 nm) was used. Particularly suitable as a light source here an LED with a wavelength of 569 nm. At this wavelength the three possible states namely "no film", "undeveloped film" and "developed film" can be clearly distinguished. While for the condition "no Film "practically a 100% light transition can be measured locks up undeveloped film almost completely, so that no light transition can be measured. A developed film is very clearly in the area between these two extremes, so that all three states can be distinguished here.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den Unteransprüchen im Zusammenhang mit der Beschreibung eines Ausführungsbeispiels, das anhand der Zeichnung eingehend erläutert wird.Further details and advantages of the invention emerge from the subclaims in connection with the description of an exemplary embodiment, which is explained in detail using the drawing.

Es zeigen:

Fig. 1
eine schematische Darstellung einer Steuerung, die mit zwei Detektoreinrichtungen arbeitet,
Fig. 2
die schematische Darstellung einer Steuerung, die mit einer Lichtschranke arbeitet,
Fig. 3
eine Filmführung, die mit einer Infrarot-Reflex-Lichtschranke und mit einer Infrarot-Durchlicht-Lichtschranke versehen ist,
Fig. 4
ein Ablaufschema für eine Zustandserkennung mit zwei Sensoren,
Fig. 5
ein weiteres Ablaufschema für eine Zustandserkennung mit zwei Sensoren und
Fig. 6
ein Ablaufschema für eine Zustandserkennung mit nur einem Sensor.
Show it:
Fig. 1
1 shows a schematic representation of a controller that works with two detector devices,
Fig. 2
the schematic representation of a controller that works with a light barrier,
Fig. 3
a film guide that is provided with an infrared reflex light barrier and with an infrared transmitted light barrier,
Fig. 4
a flow diagram for a status detection with two sensors,
Fig. 5
another flow diagram for a state detection with two sensors and
Fig. 6
a flow chart for a state detection with only one sensor.

Bei dem Sensor 1 in Fig. 1 handelt es sich vorzugsweise um eine Fotodiode einer Infrarot-Reflexlichtschranke mit einem Schwellwertschalter, der so ausgelegt ist, daß an dem Eingang 4 nur dann ein Signal anliegt, wenn sicher feststeht, daß sich irgendein Film in der Führung befindet. Auch die dem Sensor 2 zugeordnete Lichtschranke arbeitet im infraroten Bereich, ist jedoch im Gegensatz zu der Reflexlichtschranke als Durchlicht-Lichtschranke ausgebildet. Der Schwellwertschalter von Sensor 2 ist so eingestellt, daß am Eingang 5 kein Signal anliegt wenn sicher feststeht, daß sich ein unentwickelter Film in der Führung befindet. Die Steuerung 3 weist zwei Eingänge auf, von denen der Eingang 4 mit dem Sensor 1 und der Eingang 5 mit dem Sensor 2 verbunden ist. Weiterhin ist die Steuerung mit den Ausgängen 6, 7, 8, versehen, die für entsprechende Steuerungszwecke nutzbar sind. Die Ausgänge werden über die Logikglieder 9, 10 angesteuert.Sensor 1 in FIG. 1 is preferably a photodiode an infrared reflex light barrier with a threshold switch designed in this way is that there is only a signal at input 4 if it is certain that that there is some film on the tour. The sensor 2 assigned light barrier works in the infrared range, but is in contrast designed as a transmitted light sensor to the reflex light barrier. The Threshold switch of sensor 2 is set so that no input 5 Signal is present when it is certain that there is an undeveloped film in the guide located. The controller 3 has two inputs, one of which is the input 4 is connected to sensor 1 and input 5 to sensor 2. Farther the control is provided with the outputs 6, 7, 8, for corresponding Control purposes are usable. The outputs are via the logic elements 9, 10 driven.

Eine Filmführung mit einer entsprechenden Sensorik ist in Fig. 3 dargestellt. Der Film 12 wird hier durch ein nicht dargestelltes Transportsystem durch die Führung 14 in Richtung des Pfeiles A geschoben. Die Reflexlichtschranke 23 besteht aus der Lichtquelle 21 und dem Fotosensor 1, die beide auf der gleichen Seite der Filmführung 14 angeordnet sind. Der Fotosensor 1 empfängt folglich nur dann Licht, wenn das von der Lichtquelle 21 emittierte Licht von dem Film 12 reflektiert wird. Die Durchlicht-Lichtschranke 24 weist eine Lichtquelle 22 und einen Fotosensor 2 auf gegenüberliegenden Seiten der Filmführung 14 auf. Hier liefert der Fotosensor 2 dann ein Signal, wenn sich entweder kein Film 12 in der Führung 14 befindet und das von der Lichtquelle 22 emittierte Licht direkt den Sensor 2 erreicht, oder wenn sich ein bereits entwickelter Film in der Führung 14 befindet, weil dieser im Infrarotbereich durchlässig ist. Es liegt also am Eingang 5 nur dann kein Signal an, wenn sich ein unentwickelter Film in der Führung 14 befindet.A film guide with a corresponding sensor system is shown in FIG. 3. The Film 12 is here through a guide system, not shown, through the guide 14 pushed in the direction of arrow A. The reflex light barrier 23 exists from the light source 21 and the photo sensor 1, both on the same side the film guide 14 are arranged. Consequently, the photo sensor 1 only receives then light when the light emitted from the light source 21 from the film 12 is reflected. The transmitted light sensor 24 has a light source 22 and a photo sensor 2 on opposite sides of the film guide 14. Here the photosensor 2 then delivers a signal if either there is no film 12 in the Guide 14 is located and the light emitted by the light source 22 directly Sensor 2 reached, or if an already developed film is in the guide 14 because it is transparent in the infrared range. So it's at entrance 5 only if there is an undeveloped film in the guide 14 located.

Das Logikglied 9 in der Steuerung 3 der Fig. 1 ist so ausgelegt, daß dann, wenn am Eingang 4 kein Signal anliegt, eine Spannung auf den Ausgang 6 gelegt wird. Verdeutlicht man sich diesen Zustand an Fig. 3, so bedeutet dies, daß kein Film 12 in der Führung 14 vorhanden ist, zumindest daß die Vorderkante 13 eines Films 12 noch nicht im Bereich der Reflexlichtschranke 23 ist.The logic element 9 in the controller 3 of FIG. 1 is designed so that when there is no signal at input 4, a voltage is applied to output 6. If this state is illustrated in FIG. 3, this means that none Film 12 is present in the guide 14, at least that the leading edge 13 of a film 12 is not yet in the area of the reflex light barrier 23.

Sobald sich jedoch der Film in diesem Bereich befindet, fällt Licht auf den Fotosensor 1. Dadurch liegt am Eingang 4 eine Spannung an. Das Logikglied 9 schaltet nun das Signal von dem Ausgang 6 auf die Verbindung 11 zum Logikglied 10. Dieses Logikglied 10 ist über den Eingang 5 mit dem Fotosensor 2 der Durchlicht-Lichtschranke 24 verbunden.However, as soon as the film is in this area, light falls on the photo sensor 1. This creates a voltage at input 4. The logic element 9 now switches the signal from output 6 to connection 11 to the logic element 10. This logic element 10 is the input 5 with the photo sensor 2 Transmitted light sensor 24 connected.

Handelt es sich bei dem in Fig. 3 gezeigten Film 12 um einen entwickelten Film, so empfängt der Fotosensor 2 das von der Lichtquelle 22 emittierte Licht, da entwickelte Filme im infraroten Wellenlängenbereich praktisch durchlässig sind. Für diesen Fall liegt folglich am Eingang 5 ein Signal an. Erhält das Logikglied 10 also über die Verbindung 11 und den Eingang 5 ein Signal, so liegt ebenfalls ein Signal an dem Ausgang 7, während an den Ausgängen 6 und 8 kein Signal anliegt. Für den Fall, daß es sich bei dem Film 12 um einen noch nicht entwickelten Film handelt, der im Infrarot-Bereich sperrend wirkt, erhält der Fotosensor 2 kein Licht, so daß am Eingang 5 kein Signal anliegt. Für diesen Fall (Signal an Verbindung 11, kein Signal an Eingang 5) liegt ein Signal am Ausgang 8. In diesem Zustand liegt an den Ausgängen 6 und 7 kein Signal an.If the film 12 shown in FIG. 3 is a developed film, the photo sensor 2 receives the light emitted by the light source 22 there developed films are practically transparent in the infrared wavelength range. In this case there is a signal at input 5. Receives the logic element 10 a signal via connection 11 and input 5 is also present Signal at output 7, while there is no signal at outputs 6 and 8. In the event that film 12 is not yet developed The photo sensor 2 does not receive any film that has a blocking effect in the infrared range Light so that there is no signal at input 5. In this case (signal on connection 11, no signal at input 5) there is a signal at output 8. In this There is no signal at outputs 6 and 7.

Die Steuerung 3 läßt sich auch als ein Logikbaustein mit zwei Eingängen und drei Ausgängen betrachten. Um hier zu eindeutigen Ergebnissen zu kommen ist es ideal, die Durchlicht-Lichtschranke 24 so zu positionieren, daß sie auf den Rand des Filmes 12 wirkt, der sich gegenüber der Reflexlichtschranke 23 befindet. Die Schaltlogik der Steuerung 3 kann der nachfolgenden Tabelle entnommen werden. Hierbei steht ein X für ein anliegendes Signal und ein Kreis für kein Signal. Eingang 4 Eingang 5 Ausgang 6 Ausgang 7 Ausgang 8 Zustand X O O O X Film nicht entwickelt O X X O O Kein Film X X O X O Film entwickelt The controller 3 can also be viewed as a logic module with two inputs and three outputs. In order to achieve clear results here, it is ideal to position the transmitted light sensor 24 in such a way that it acts on the edge of the film 12 which is opposite the reflected light sensor 23. The switching logic of the controller 3 can be found in the table below. An X stands for an applied signal and a circle for no signal. Entrance 4 Entrance 5 Exit 6 Exit 7 Exit 8 Status X O O O X Film not developed O X X O O Not a movie X X O X O Film developed

In dem Ausführungsbeispiel nach Fig. 2 ist nur eine Detektoreinrichtung mit einem Fotosensor 30 vorgesehen, die im blaugrünen Wellenlängenbereich arbeitet. Der Sensor 30 liefert ein dem einfallenden Licht proportionales Signal. Die Steuerung 33, die wiederum über drei Ausgänge 36, 37, 38 verfügt, besitzt damit nur einen einzigen Eingang 34. Die Steuerung 33 beinhaltet zwei Sollwertgeber 35 und 39 und zwei Vergleichsglieder 31, 32. Der durch den Sollwertgeber 35 zur Verfügung gestellte Wert entspricht in etwa 90 % des am Eingang 34 anliegenden Signals, wenn sich kein Film in der Führung 14 befindet. Der von dem Sollwertgeber 39 zur Verfügung gestellte Wert entspricht etwa 10 % dieses Signales. Beide Sollwerte können entsprechend der Änderung der Leistung der Lichtquelle der Detektoreinrichtung zwischenzeitlich immer wieder abgeglichen werden.In the exemplary embodiment according to FIG. 2, only one detector device is included a photo sensor 30 is provided which operates in the blue-green wavelength range. The sensor 30 delivers a signal proportional to the incident light. The Control 33, which in turn has three outputs 36, 37, 38, thus has only a single input 34. The controller 33 contains two setpoint devices 35 and 39 and two comparison elements 31, 32. The by the setpoint generator 35 The value provided corresponds to approximately 90% of that at the entrance 34 applied signal when there is no film in the guide 14. The value provided by the setpoint generator 39 corresponds approximately 10% of this signal. Both setpoints can be changed according to the Power of the light source of the detector device in the meantime again and again be compared.

Ist das am Eingang 34 anliegende Signal größer als das Signal des Sollwertgebers 35, so liegt am Ausgang 36 ein Signal an. Für diesen Fall liegt auch am Ausgang des Vergleichsgliedes 32 ein Signal an, weil das über die Verbindung 40 abgegriffene Signal auch größer als das Signal des Sollwertgebers 39 ist. Das UND-Glied 42 erhält also ein Signal von dem Vergleichsglied 32, während von dem NICHT-Glied 41 kein Signal anliegt. Damit liegt auch an dem Ausgang 37 kein Signal an. Über das NICHT-Glied 43 bleibt auch der Ausgang 38 ohne Signal.If the signal at input 34 is greater than the signal from the setpoint generator 35, there is a signal at output 36. In this case it is also due to Output of the comparator 32 a signal because that over the connection 40 tapped signal is also greater than the signal of the setpoint generator 39 is. The AND gate 42 thus receives a signal from the comparison gate 32 while there is no signal from the NOT gate 41. This is also due to the exit 37 no signal on. The output 38 also remains via the NOT link 43 without signal.

Befindet sich ein entwickelter Film in der Führung, ist das Signal am Eingang 34 kleiner als das Signal des Sollwertgebers 35, aber größer als das Signal des Sollwertgebers 39. Damit ist kein Signal auf den Ausgang 36 geschaltet, wogegen am Ausgang des Vergleichsgliedes 32 ein Signal anliegt. Da nun auch von dem NICHT-Glied 41 an dem UND-Glied 42 ein Signal anliegt, schaltet dieses ein Signal auf den Ausgang 37. Über das NICHT-Glied 43 liegt wiederum kein Signal am Ausgang 38.If there is a developed film in the guide, the signal is at input 34 smaller than the signal of the setpoint generator 35, but larger than the signal of the Setpoint generator 39. This means that no signal is connected to output 36, whereas a signal is present at the output of the comparator 32. There now too a signal from the NOT gate 41 to the AND gate 42 switches it a signal on the output 37. The non-gate 43 is in turn no signal at output 38.

Befindet sich ein unentwickelter Film in der Führung, ist das Signal am Eingang 34 kleiner als das Signal des Sollwertgebers 39. Während sich dadurch am Ausgang des Vergleichsgliedes 31 gegenüber dem vorher geschilderten Fall keine Änderung ergibt, liegt jetzt am Ausgang des Vergleichsgliedes 32 kein Signal mehr an. Damit liegt auch kein Signal am Ausgang 37, wogegen über das NICHT-Glied 43 am Ausgang 38 nun ein Signal anliegt.If there is an undeveloped film on the tour, the signal is at the entrance 34 smaller than the signal of the setpoint generator 39 Output of the comparator 31 compared to the previously described case there is no change, there is now no output at the comparator 32 Signal on. So there is no signal at the output 37, whereas the NOT element 43 at the output 38 there is now a signal.

Um diese Ausführungsform an der Fig. 3 zu verdeutlichen, müßte man die Detektoreinrichtung 23 eliminieren. Die Lichtquelle 22 der Detektoreinrichtung 24 müßte dann so beschaffen sein, daß sie Licht im blaugrünen Wellenlängenbereich emitttiert.In order to illustrate this embodiment in FIG. 3, the detector device would have to be used Eliminate 23. The light source 22 of the detector device 24 should then be such that they emit light in the blue-green wavelength range emitttiert.

Da ein noch nicht entwickelter Film in diesem Wellenlängenbereich lichtempfindlich ist und somit bei der Prüfung mit einer Vorrichtung nach diesem Ausführungsbeispiel ein latentes Abbild der Lichtquelle auf dem Film erzeugt werden würde, wäre es vorteilhaft, die Lichtquelle so auszubilden, daß sie auf dem Film ein bestimmtes Muster erzeugt. Damit könnte beispielsweise ein Labor jeweils sein Kennzeichen auf den Filmanfang einbelichten.Because a film that has not yet been developed is sensitive to light in this wavelength range and thus when testing with a device according to this embodiment generate a latent image of the light source on the film it would be advantageous to design the light source to be on the film creates a certain pattern. For example, one laboratory could do this imprint his mark on the beginning of the film.

Die in den Figuren 1 und 2 gezeigten Schaltungen lassen sich auch als Software realisieren. Entsprechende Ablaufschemen sind in den Figuren 4 bis 6 gezeigt. In Fig. 4 wird unter dem Bezugszeichen 51 das Ausgangssignal des Sensors 1 abgefragt. Solange der Sensor kein Signal abgibt, wird das Programm wieder zurückgesetzt. Erst wenn die Abfrage bei 51 ein positives Ergebnis zeigt, wird unter dem Bezugszeichen 52 auch das Ausgangssignal des Sensors 2 abgefragt. Ist hier kein Signal vorhanden, so befindet sich ein entwickelter Film in der Führung 14. Diese Entscheidung ist mit 57 gekennzeichnet. Wenn jedoch am Sensor 2 ein Signal anliegt, so handelt es sich bei dem detektierten Film um einen noch nicht entwickelten Film. Diese Entscheidung wird unter 58 getroffen.The circuits shown in FIGS. 1 and 2 can also be used as software realize. Corresponding flow diagrams are shown in Figures 4 to 6. In FIG. 4 shows the output signal of sensor 1 under reference number 51 queried. As long as the sensor does not emit a signal, the program will continue reset. Only when the query at 51 shows a positive result, is the reference signal 52 also queries the output signal of sensor 2. If there is no signal here, there is a developed film in the Leadership 14. This decision is marked 57. However, if on If sensor 2 has a signal, the film detected is a not yet developed film. This decision is made at 58.

Wie in Fig. 5 gezeigt, läßt sich auch zuerst der Sensor 2 abfragen. Diese Abfrage ist wiederum mit dem Bezugszeichen 52 versehen. Liegt am Sensor 2 kein Signal an, so kann sofort unter 58 entschieden werden, daß sich ein unentwickelter Film in der Führung 14 befindet. Liegt dagegen ein Signal an, wird wiederum unter dem Bezugszeichen 51 der Sensor 1 abgefragt. Liegt hier kein Signal an, so befindet sich zumindest noch kein Film im Bereich dieses Sensors. Das Programm wird daher zurückgesetzt und die Abfrage beginnt von neuem. Liegt dagegen am Sensor 1 ein Signal an, so kann nun unter 57 entschieden werden, daß es sich hierbei um einen entwickelten Film handelt.As shown in FIG. 5, the sensor 2 can also be queried first. This query is again provided with the reference number 52. There is no sensor 2 Signal on, it can be decided immediately under 58 that a undeveloped film located in the guide 14. If there is a signal, however, is again the sensor 1 is queried under the reference symbol 51. There is no here Signal on, there is at least no film in the area of this sensor. The program is therefore reset and the query starts again. If, on the other hand, there is a signal at sensor 1, the decision can now be made under 57 be that this is a developed film.

Das Ablaufschema nach Fig. 6 betrifft eine Vorrichtung mit nur einem Sensor und einer blaugrünen Lichtquelle. Hier wird unter dem Bezugszeichen 55 geprüft, ob das Signal an dem Sensor 2 größer als ein Schwellwert ist, der etwa 90 % des Signals beträgt, welches an dem Sensor 2 anliegt, wenn kein Film in der Führung ist. Ist das Signal an dem Sensor 2 größer als dieser Schwellwert, bedeutet dies, daß tatsächlich kein Film in der Führung ist und das Programm wird zurückgesetzt. Ist das Signal am Sensor 2 jedoch kleiner, wird es unter dem Bezugszeichen 59 mit einem zweiten Schwellwert verglichen. Dieser Schwellwert beträgt nur noch 10 % des Signals, welches an dem Sensor 2 anliegt, wenn sich kein Film in der Führung befindet. Ist das Signal größer als dieser Schwellwert, wird in 57 entschieden, daß es sich um einen entwickelten Film handelt. Ist es jedoch kleiner, lautet die Entscheidung unter 58 auf einen unentwickelten Film.6 relates to a device with only one sensor and a blue-green light source. Here is checked under reference number 55, whether the signal at sensor 2 is greater than a threshold value that is approximately 90% of the signal which is present at the sensor 2 when there is no film in the Leadership is. If the signal at sensor 2 is greater than this threshold value, means this is that in fact there is no film in the lead and the program will be reset. However, if the signal at sensor 2 is smaller, it will be below the Reference numeral 59 compared with a second threshold. This threshold is only 10% of the signal that is present at sensor 2 when no film is in the guide. If the signal is greater than this threshold, it is decided in 57 that it is a developed film. Is it however, smaller, the decision is made under 58 on an undeveloped film.

Mit den festgestellten Zuständen 57, 58 oder den Signalen an den Ausgängen 7, 8 bzw. 37, 38 können nun verschiedene Reaktionen angestoßen werden. Ist die Prüfeinrichtung beispielsweise in einem Splicer eingebaut, mit dem unentwickelte Filme zu einem langen Band zusammengefügt werden, um dieses danach durch eine Filmentwicklungsmaschine zu führen, so löst die Feststellung "entwickelter Film" ein Rückspulen des Films in die Patrone und ein Schließen der Lichtklappe aus. Ebenso muß eine entsprechende Meldung generiert werden, um die Bedienperson darauf aufmerksam zu machen, daß hier versehentlich ein bereits entwickelter Film eingegeben wurde. Die gleiche Reaktion muß ausgelöst werden bei einer Filmentwicklungsmaschine, in der nur einzelne aus der Patrone entnommene Filme entwickelt werden.With the determined states 57, 58 or the signals at the outputs 7, 8 or 37, 38 different reactions can now be initiated. Is the Test equipment installed in a splicer, for example, with the undeveloped one Films are put together into a long tape to be followed by this to run a film processor, that solves the finding "more developed Film "rewinds the film into the cartridge and closes the light door out. A corresponding message must also be generated to inform the operator to draw attention to the fact that an accidentally already exists here developed film was entered. The same reaction must be triggered in a film processor in which only a few from the cartridge removed films are developed.

Ist ein Splicer für den Nachbestellbetrieb eingestellt, bei dem bereits entwickelte Filme zu einem langen Band zusammengefügt werden, so muß nur die Feststellung "unentwickelter Film" eine besondere Reaktion auslösen. Hier muß dieser Film sofort in die Patrone rückgespult werden, da die latent enthaltenen Bilder sonst bei Lichteinfall zerstört werden würden.Is a splicer set for the reordering company from which already developed Films are put together into a long volume, so only the statement "undeveloped film" trigger a special reaction. Here this must Film should be rewound immediately in the cartridge because the latent images would otherwise be destroyed in the event of light.

Das erfindungsgemäße Verfahren und die erfindungsgemäße Vorrichtung sind nicht nur auf die hier erwähnten Geräte anwendbar, sondern können überall dort eingesetzt werden, wo die falsche Behandlung eines Films - sei er nun entwickelt oder unentwickelt - zu einem unwiederbringlichen Verlust für den Kunden führen würde.The inventive method and the inventive device are not only applicable to the devices mentioned here, but can be used anywhere be used where the wrong handling of a film - be it developed now or undeveloped - lead to an irretrievable loss for the customer would.

Claims (12)

  1. Method of testing the state of development of a photographic film in a light-proof cartridge, characterized in that the start of the film (12) protruding from the cartridge is positioned between a light source (22) and a photosensor (2), the presence of a film is established and the state of development of the film is measured with reference to the amount of light passing between light source and photosensor.
  2. Method according to claim 1, characterized in that the presence of a film is determined using an additional detector (1; 21) and the state of development of the film is recognized from a comparison of this determination with the result of the measuring process.
  3. Method according to claim 2, characterized in that the presence of a film is determined mechanically or pneumatically.
  4. Method according to claim 2, characterized in that the presence of a film is determined using an infrared reflex photoelectric barrier (1; 21).
  5. Method according to claim 4, characterized in that the infrared reflex photoelectric barrier (1; 21) is directed preferably at the rear side of the film opposite the emulsion layer.
  6. Method according to claim 2, characterized in that an infrared transmitted-light photoelectric barrier (2; 22) is used for the measuring process.
  7. Method according to claim 1, characterized in that the amount of light passing is measured using light in the green and/or blue wavelength range and the presence of a film and the state of development of any film present is recognized with reference to the amount of light that has passed through.
  8. Device for testing the state of development of a photographic film in a light-proof cartridge, characterized in that a light source (22) and a photosensor (2) for measuring the amount of light passing through a piece of film (12) protruding from the cartridge and a control device (3, 33) connected to the photosensor (2) are provided, the control device being constructed so that it recognizes the presence and state of development of a film on the basis of the incoming signals.
  9. Device according to claim 8, characterized in that a detector device (23) for determining the presence of a film (12) is also provided, the control device (3) being constructed so that on the basis of the output signal of the detector device (23) it establishes
    State a: no film present
    State b: film present
    and on the basis of the output signal of the photosensor (2)
    State c: large amount of light passing
    State d: small amount of light passing
    and in the event of state b + c being established, it recognizes a developed film and in the case of state b + d being established, it recognizes an undeveloped film.
  10. Device according to claim 8, characterized in that the light source (22) is an infrared source.
  11. Device according to claim 9, characterized in that the detector device (23) has an infrared reflection photoelectric barrier (21, 1).
  12. Device according to claim 8, characterized in that the light source emits light in the blue and/or green wavelength range and that the control device (33) is constructed so that it compares the output signal of the photosensor (30) with predetermined threshold values (35, 39) and distinguishes between the following three states:
    State 1: no film present
    State 2: developed film present
    State 3: undeveloped film present
EP96934657A 1995-10-11 1996-10-11 Method and device for testing a photographic film Expired - Lifetime EP0855048B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19537906 1995-10-11
DE19537906A DE19537906C2 (en) 1995-10-11 1995-10-11 Method and apparatus for checking a photographic film
PCT/EP1996/004444 WO1997014078A1 (en) 1995-10-11 1996-10-11 Method and device for testing a photographic film

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EP0855048A1 EP0855048A1 (en) 1998-07-29
EP0855048B1 true EP0855048B1 (en) 2002-01-16

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EP96934657A Expired - Lifetime EP0855048B1 (en) 1995-10-11 1996-10-11 Method and device for testing a photographic film

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Country Link
US (1) US6000861A (en)
EP (1) EP0855048B1 (en)
JP (1) JPH11513503A (en)
DE (2) DE19537906C2 (en)
ES (1) ES2171725T3 (en)
WO (1) WO1997014078A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2125084C3 (en) * 1971-05-19 1975-02-13 Agfa-Gevaert Ag, 5090 Leverkusen Device for lifting the beginning of a film roll
CA1117346A (en) * 1978-06-19 1982-02-02 Noritsu Koki Co., Ltd. Automatic film retriever
IT1214975B (en) * 1985-08-08 1990-01-31 Signoretto Roberto WITH METHOD PROCESSING ENVELOPES AND EQUIPMENT FOR PHOTOGRAPHIC LABORATORIES. CORRELATE PHOTOGRAPHIC FILMS
DE8717530U1 (en) * 1987-09-30 1989-03-09 Siemens AG, 1000 Berlin und 8000 München Electrical high-voltage circuit breaker
DE3935915C2 (en) * 1989-10-27 2001-08-02 Agfa Gevaert Ag Process and device for processing developed photographic films
JP2719015B2 (en) * 1989-12-05 1998-02-25 富士写真フイルム株式会社 Photo film handling and printing method and storage container
JPH07219038A (en) * 1994-02-04 1995-08-18 Fuji Photo Film Co Ltd Film viewer
JPH08152676A (en) * 1994-11-28 1996-06-11 Canon Inc Device for discriminating photographic film already developed and camera provided with the device

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JPH11513503A (en) 1999-11-16
EP0855048A1 (en) 1998-07-29
ES2171725T3 (en) 2002-09-16
US6000861A (en) 1999-12-14
WO1997014078A1 (en) 1997-04-17
DE19537906A1 (en) 1997-04-17
DE19537906C2 (en) 2002-11-21
DE59608604D1 (en) 2002-02-21

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