EP0987110A1 - Process for assessing the quality of processed material - Google Patents

Process for assessing the quality of processed material Download PDF

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Publication number
EP0987110A1
EP0987110A1 EP99118436A EP99118436A EP0987110A1 EP 0987110 A1 EP0987110 A1 EP 0987110A1 EP 99118436 A EP99118436 A EP 99118436A EP 99118436 A EP99118436 A EP 99118436A EP 0987110 A1 EP0987110 A1 EP 0987110A1
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EP
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Prior art keywords
counter
counter reading
error
inspected
sheets
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Granted
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EP99118436A
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German (de)
French (fr)
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EP0987110B1 (en
Inventor
Gerald Josef Reinhard
Johannes Georg Schaede
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Koenig and Bauer AG
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Koenig and Bauer AG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control

Definitions

  • the invention relates to methods for qualitative Evaluation of processed material according to the Preamble of claim 1.
  • DE-OS 23 38 849 describes a method for Finding defects in rolled steel surfaces. Here those errors are identified that a certain Show periodicity.
  • DE 41 29 126 A1 discloses a method for Detection of defects in a textile web. The number of consecutive errors added. If a faultless product occurs the counter reading is reset to zero.
  • the invention has for its object a method for the qualitative assessment of processed material to accomplish.
  • errors in the material to be inspected are systematically recorded using the method according to the invention.
  • the location of an error is facilitated by the targeted detection of errors that occur and their assignment to an associated error source. Waste and downtimes of the processing machine are reduced.
  • rotary printing presses see EP 04 06 157 B1 with a forme cylinder having a plurality of identical printing forms, it is thus possible to clearly assign errors to the printing form which generated the errors.
  • a processing machine for example a rotary printing machine, is provided with a device for the qualitative assessment of processed material.
  • This material can be printed sheets or webs, for example.
  • sheets of paper are printed using the steel engraving process and then assessed qualitatively inline.
  • the rotary printing press can be, for example, a steel engraving printing press known from EP 04 06 157 B1.
  • picture elements of a sheet to be checked are compared with stored picture elements of so-called "master" sheets. If one or more measured values lie outside a predetermined tolerance of the corresponding measured values of the "master” sheets, an error is detected. This error can now be indicated optically or acoustically by means of a first warning signal. The corresponding sheet with an error can also be marked or sorted out.
  • a counter is fed a signal for the defective sheet, whereby the counter reading of a counting unit, e.g. B. is increased by one. If one or more defective sheets follow directly on the defective sheet, the counter reading of the counter is increased by one for each defective sheet. The counter only adds the counter reading by one counter unit, e.g. B. one up.
  • a signal for the error-free sheet is fed to the counter, whereby the counter reading is gradually increased by one counting unit, e.g. B. one is reduced. Now follow more error-free Sheets one after the other, the counter reading is reduced by one for each error-free sheet. If the counter reading has reached a lower limit, for example the value 0, no further downward counting takes place. The counter reading is thus changed step by step according to the number of inspected, faulty and error-free sheets. This procedure takes place within a range of the counter reading from a lower limit, e.g. B. zero, up to a definable (selectable), upper limit of the counter reading. If this limit value is reached, a second warning signal is triggered and, for example, fed to the machine control. This signal can, for example, cause the speed of the rotary printing press to be reduced or the rotary printing press to be switched off.
  • This procedure is based on the total number of inspecting sheet applicable.
  • the sheets to be inspected are often processed in machines in which cyclical errors can occur. This is the case, for example, when the sheets to be inspected are printed using a rotary printing press known from EP 04 06 157 B1.
  • This rotary printing press has a plate cylinder which is provided with three printing plates, each having an identical printing form. The non-printing areas of these printing plates are cleaned by a common wiper device after inking.
  • This wiping device consists, among other things, of a wiping cylinder operated under pressure. If, for example, one of the three pressure plates is damaged or is partially a little lower, the wiper device does not completely clean this area. Therefore, every third sheet of all sheets produced would have a toning area. Toning areas can also only occur for a limited time, for example by slugs which are removed by the wiping device.
  • each printing plate is assigned its own counter. This counter is synchronized with the printing press and the inspection device in such a way that a signal of an error-free or defective sheet printed on a specific printing plate is fed to the counter assigned to this printing plate. Each counter assigned to a printing plate is therefore only supplied with signals from the sheets printed and inspected by means of this associated printing plate.
  • This particular counter can work according to the following simple principle: If a faulty sheet is detected, a signal is fed to the respective counter, whereby the counter reading is increased by one counting unit, e.g. B. one is increased. This is done at successive sheets up to a preselectable limit. However, by detecting a faultless sheet, the counter reading is reset to zero and counting of the counter reading only begins when faulty sheets appear again. If this limit value is reached, a second warning signal is issued, which, for example, is passed on to the machine control system to trigger further processes.
  • one counting unit e.g. B. one is increased. This is done at successive sheets up to a preselectable limit.
  • the counter reading is reset to zero and counting of the counter reading only begins when faulty sheets appear again. If this limit value is reached, a second warning signal is issued, which, for example, is passed on to the machine control system to trigger further processes.
  • the method described at the outset is also used for counting these cyclically occurring errors. Accordingly, the counting up and down is carried out step by step according to the number of faulty and faultless sheets.
  • This counting of cyclical errors is not just that described example of plate cylinders with several Printing plates limited, taking cyclical errors successive sheets or reports of the web can be detected. There are also other use cases possible. Relevant possible sources of error are that generate a cyclical error, at least one own counter assigned.
  • Step size not equal to one it is also possible to count in other counter units or step sizes (i.e. Step size not equal to one) and with other limit values perform.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)
  • Facsimiles In General (AREA)

Abstract

The method for qualitative testing of processed material is carried out using at least one photo electric sensor, working in conjunction with an evaluation unit. Possible fault sources allocated to image regions of the processed e.g. printed material are detected. The material is printed using a rotary printing press. Respectively a print form as a source of error, of a form cylinder provided with several identical printing forms is established. Each source of error is allocated an own counter.

Description

Die Erfindung betrifft Verfahren zur qualitativen Beurteilung von bearbeitetem Material gemäß dem Oberbegriff des Anspruches 1.The invention relates to methods for qualitative Evaluation of processed material according to the Preamble of claim 1.

Die DE-OS 23 38 849 beschreibt ein Verfahren zum Auffinden von Fehlern in Walzstahloberflächen. Dabei werden jene Fehler identifiziert, die eine bestimmte Periodizität aufweisen.DE-OS 23 38 849 describes a method for Finding defects in rolled steel surfaces. Here those errors are identified that a certain Show periodicity.

Die DE 41 29 126 A1 offenbart ein Verfahren zum Feststellen von Fehlern in einer textilen Warenbahn. Dabei wird die Anzahl aufeinanderfolgender Fehler addiert. Bei Auftreten eines fehlerfreien Produktes wird der Zählerstand auf Null zurückgesetzt.DE 41 29 126 A1 discloses a method for Detection of defects in a textile web. The number of consecutive errors added. If a faultless product occurs the counter reading is reset to zero.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur qualitativen Beurteilung von bearbeitetem Material zu schaffen.The invention has for its object a method for the qualitative assessment of processed material to accomplish.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des kennzeichnenden Teiles des Anspruches 1.This object is achieved by the features of the characterizing part of claim 1.

In vorteilhafter Weise werden mittels der erfindungsgemäßen Verfahren Fehler des zu inspizierenden Materials systematisch erfaßt. Durch die gezielte Erfassung auftretender Fehler und Zuordnung zu einer zugehörigen Fehlerquelle wird die Ortung eines Fehlers erleichtert. Makulatur und Stillstandszeiten der Verarbeitungsmaschine werden reduziert.
Insbesondere bei Rotationsdruckmaschinen (siehe EP 04 06 157 B1) mit einem eine Mehrzahl von identischen Druckformen aufweisenden Formzylinder ist damit eine eindeutige Zuordnung von Fehlern zu der fehlererzeugenden Druckform möglich. In an advantageous manner, errors in the material to be inspected are systematically recorded using the method according to the invention. The location of an error is facilitated by the targeted detection of errors that occur and their assignment to an associated error source. Waste and downtimes of the processing machine are reduced.
In particular in the case of rotary printing presses (see EP 04 06 157 B1) with a forme cylinder having a plurality of identical printing forms, it is thus possible to clearly assign errors to the printing form which generated the errors.

Durch die Auf- und Abwärtszählung entsprechend der Anzahl von aufeinanderfolgenden fehlerbehafteten und fehlerfreien Bildbereichen wird eine sichere Fehlerauswertung erreicht.
Denn insbesondere bei Fehlern infolge einer unzureichenden Wischung der eingefärbten Druckplatten in einer Stahlstichdruckmaschine kommt es häufig vor, daß auf eine Mehrzahl fehlerbehafteter Bogen nur ein fehlerfreier Bogen folgt und sich daran wieder eine Mehrzahl von fehlerbehafteten Bogen anschließt. Hat nun in diesem Fall die Anzahl der fehlerbehafteten Bogen nahezu einen oberen Grenzwert erreicht, wird der Zählerstand infolge dieses einen fehlerfreien Bogens nur um eins reduziert und durch die nachfolgenden fehlerbehafteten Bogen wird der Zählerstand wieder erhöht. Der Grenzwert des Zählerstandes wird demzufolge schnell erreicht und ein Warnsignal ausgelöst. So wird unnötige Makulatur reduziert.By counting up and down according to the number of successive error-prone and error-free image areas, a reliable error evaluation is achieved.
This is because, particularly in the case of errors due to insufficient wiping of the inked printing plates in a steel engraving printing machine, it often happens that a plurality of defective sheets is followed by only one defect-free sheet and is followed by a plurality of defective sheets. If in this case the number of faulty sheets has almost reached an upper limit, the counter reading is only reduced by one as a result of this one fault-free sheet and the counter reading is increased again by the subsequent faulty sheets. The limit value of the counter reading is therefore reached quickly and a warning signal is triggered. This reduces unnecessary waste.

Das erfindungsgemäße Verfahren wird im folgenden näher beschrieben.The process according to the invention is described in more detail below described.

Eine Verarbeitungsmaschine, beispielsweise eine Rotationsdruckmaschine, ist mit einer Vorrichtung zum qualitativen Beurteilen von bearbeitetem Material versehen. Bei diesem Material kann es sich beispielsweise um bedruckte Bogen oder Bahnen handeln. Im vorliegenden Beispiel werden Bogen aus Papier im Stahlstichverfahren bedruckt und anschließend inline qualitativ beurteilt.
Bei der Rotationsdruckmaschine kann es sich beispielsweise um eine aus der EP 04 06 157 B1 bekannte Stahlstichdruckmaschine handeln.A processing machine, for example a rotary printing machine, is provided with a device for the qualitative assessment of processed material. This material can be printed sheets or webs, for example. In the present example, sheets of paper are printed using the steel engraving process and then assessed qualitatively inline.
The rotary printing press can be, for example, a steel engraving printing press known from EP 04 06 157 B1.

Ein Verfahren zur Beurteilung dieser Bogen ist beispielsweise aus der DE 42 06 366 A1 bekannt.One method of assessing this arch is known for example from DE 42 06 366 A1.

Nach diesem Verfahren werden Bildelemente eines zu prüfenden Bogens mit gespeicherten Bildelementen sogenannter "Master"-Bogen verglichen. Liegt ein oder liegen mehrere Meßwerte außerhalb einer vorgegebenen Toleranz der entsprechenden Meßwerte der "Master"-Bogen wird ein Fehler detektiert. Dieser Fehler kann nun optisch oder akustisch mittels eines ersten Warnsignals angezeigt werden. Auch kann der entsprechende, mit einem Fehler behaftete Bogen markiert oder aussortiert werden. Einem Zähler wird ein Signal für den fehlerbehafteten Bogen zugeführt, wodurch der Zählerstand einer Zähleinheit, z. B. um eins erhöht wird. Folgt nun direkt auf den fehlerbehafteten Bogen ein oder mehrere fehlerbehaftete Bogen wird der Zählerstand des Zählers für jeden fehlerbehafteten Bogen um eins erhöht. Der Zähler addiert nur bei direkt nacheinander auftretenden Fehlern den Zählerstand um jeweils eine Zählereinheit, z. B. eins nach oben.
Wird nach einem fehlerbehafteten Bogen ein fehlerfreier Bogen detektiert, wird dem Zähler ein Signal für den fehlerfreien Bogen zugeführt, wodurch der Zählerstand schrittweise um eine Zähleinheit, z. B. eins verringert wird. Folgen nun weitere fehlerfreie
Bogen direkt hintereinander, wird der Zählerstand für jeden fehlerfreien Bogen um jeweils eins verringert. Hat der Zählerstand einen unteren Grenzwert, z.B. den Wert 0, erreicht, erfolgt keine weitere Abwärtszählung. Der Zählerstand wird also entsprechend der Anzahl der inspizierten, fehlerbehafteten und fehlerfreien Bogen schrittweise verändert. Dieses Vorgehensweise erfolgt innerhalb eines Bereiches des Zählerstandes von einem unteren Grenzwert, z. B. null, bis zu einem festlegbaren (wählbaren), oberen Grenzwert des Zählerstandes.
Wird dieser Grenzwert erreicht, wird ein zweites Warnsignal ausgelöst und beispielsweise der Maschinensteuerung zugeführt. Dieses Signal kann beispielsweise bewirken, daß die Geschwindigkeit der Rotationsdruckmaschine reduziert oder die Rotationsdruckmaschine abgestellt wird.According to this method, picture elements of a sheet to be checked are compared with stored picture elements of so-called "master" sheets. If one or more measured values lie outside a predetermined tolerance of the corresponding measured values of the "master" sheets, an error is detected. This error can now be indicated optically or acoustically by means of a first warning signal. The corresponding sheet with an error can also be marked or sorted out. A counter is fed a signal for the defective sheet, whereby the counter reading of a counting unit, e.g. B. is increased by one. If one or more defective sheets follow directly on the defective sheet, the counter reading of the counter is increased by one for each defective sheet. The counter only adds the counter reading by one counter unit, e.g. B. one up.
If an error-free sheet is detected after a defective sheet, a signal for the error-free sheet is fed to the counter, whereby the counter reading is gradually increased by one counting unit, e.g. B. one is reduced. Now follow more error-free
Sheets one after the other, the counter reading is reduced by one for each error-free sheet. If the counter reading has reached a lower limit, for example the value 0, no further downward counting takes place. The counter reading is thus changed step by step according to the number of inspected, faulty and error-free sheets. This procedure takes place within a range of the counter reading from a lower limit, e.g. B. zero, up to a definable (selectable), upper limit of the counter reading.
If this limit value is reached, a second warning signal is triggered and, for example, fed to the machine control. This signal can, for example, cause the speed of the rotary printing press to be reduced or the rotary printing press to be switched off.

Dieses Verfahren ist auf die gesamte Anzahl der zu inspizierenden Bogen anwendbar.This procedure is based on the total number of inspecting sheet applicable.

Häufig werden die zu inspizierenden Bogen in Maschinen bearbeitet, in denen zyklische Fehler auftreten können. Dies ist beispielsweise dann der Fall, wenn die zu inspizierenden Bogen mittels einer aus der EP 04 06 157 B1 bekannten Rotationsdruckmaschine bedruckt werden.
Diese Rotationsdruckmaschine weist einen Plattenzylinder auf, der mit drei, jeweils eine identische Druckform aufweisenden Druckplatten versehen ist. Die nichtdruckenden Bereiche dieser Druckplatten werden von einer gemeinsamen Wischeinrichtung nach dem Einfärben von Druckfarbe gereinigt. Diese Wischeinrichtung besteht u.a. aus einem unter Druck angestellten Wischzylinder.
Ist nun eine der drei Druckplatten beispielsweise beschädigt oder liegt teilweise etwas tiefer, reinigt die Wischeinrichtung diesen Bereich nicht vollständig. Daher würde jeder dritte Bogen aller produzierten Bogen einen tonenden Bereich aufweisen.
Tonende Bereiche können aber auch nur zeitlich begrenzt auftreten, beispielsweise durch Butzen, die durch die Wischeinrichtung wieder entfernt werden.The sheets to be inspected are often processed in machines in which cyclical errors can occur. This is the case, for example, when the sheets to be inspected are printed using a rotary printing press known from EP 04 06 157 B1.
This rotary printing press has a plate cylinder which is provided with three printing plates, each having an identical printing form. The non-printing areas of these printing plates are cleaned by a common wiper device after inking. This wiping device consists, among other things, of a wiping cylinder operated under pressure.
If, for example, one of the three pressure plates is damaged or is partially a little lower, the wiper device does not completely clean this area. Therefore, every third sheet of all sheets produced would have a toning area.
Toning areas can also only occur for a limited time, for example by slugs which are removed by the wiping device.

In diesem Beispiel ist jeder Druckplatte ein eigener Zähler zugeordnet. Dieser Zähler ist mit der Druckmaschine und der Inspektionseinrichtung derart synchronisiert, daß ein Signal eines fehlerfreien bzw. fehlerbehafteten, eines mittels einer bestimmten Druckplatte bedruckten Bogens dem dieser Druckplatte zugeordneten Zähler zugeführt wird.
Jedem einer Druckplatte zugeordneten Zähler werden also nur Signale der mittels dieser zugehörigen Druckplatte bedruckten und inspizierten Bogen zugeführt.In this example, each printing plate is assigned its own counter. This counter is synchronized with the printing press and the inspection device in such a way that a signal of an error-free or defective sheet printed on a specific printing plate is fed to the counter assigned to this printing plate.
Each counter assigned to a printing plate is therefore only supplied with signals from the sheets printed and inspected by means of this associated printing plate.

Dieser jeweilige Zähler kann nach folgenden einfachen Prinzip arbeiten:
Wird ein fehlerbehafteter Bogen detektiert, wird dem jeweiligen Zähler ein Signal zugeführt, wodurch der Zählerstand um eine Zähleinheit, z. B. eins erhöht wird. Dies erfolgt bei
aufeinander folgenden Bogen bis zu einem vorwählbaren Grenzwert. Allerdings wird durch Detektieren eines fehlerfreien Bogens der Zählerstand auf Null zurückgesetzt und erst bei erneutem Auftreten von fehlerbehafteten Bogen beginnt ein Hochzählen des Zählerstandes. Wird dieser Grenzwert erreicht, erfolgt ein zweites Warnsignal, das beispielsweise an die Maschinensteuerung zur Auslösung weiterer Vorgänge weltergeleitet wird.This particular counter can work according to the following simple principle:
If a faulty sheet is detected, a signal is fed to the respective counter, whereby the counter reading is increased by one counting unit, e.g. B. one is increased. This is done at
successive sheets up to a preselectable limit. However, by detecting a faultless sheet, the counter reading is reset to zero and counting of the counter reading only begins when faulty sheets appear again. If this limit value is reached, a second warning signal is issued, which, for example, is passed on to the machine control system to trigger further processes.

In besonders vorteilhafter Weise wird das eingangs beschriebene Verfahren auch für die Zählweise dieser zyklisch auftretenden Fehler verwendet. Demnach erfolgt das schrittweise Auf- und Abwärtszählen des Zählerstandes entsprechend der jeweiligen Anzahl der fehlerbehafteten und fehlerfreien Bogen.In a particularly advantageous manner, the method described at the outset is also used for counting these cyclically occurring errors. Accordingly, the counting up and down is carried out step by step according to the number of faulty and faultless sheets.

Dieses Zählen zyklischer Fehler ist nicht nur auf das beschriebene Beispiel von Plattenzylindern mit mehreren Druckplatten beschränkt, wobei die zyklischen Fehler aufeinander folgender Bogen oder Rapporte der Bahn detektiert werden. Auch sind andere Anwendungsfälle möglich. Dabei sind relevanten möglichen Fehlerquellen, die einen zyklischen Fehler erzeugen, mindestens ein eigener Zähler zugeordnet.This counting of cyclical errors is not just that described example of plate cylinders with several Printing plates limited, taking cyclical errors successive sheets or reports of the web can be detected. There are also other use cases possible. Relevant possible sources of error are that generate a cyclical error, at least one own counter assigned.

Beispielsweise können auch innerhalb eines Bogens Teilbereiche, d. h. Fenster festgelegt werden, die einen eigenen Zähler zugeordnet bekommen. For example, inside an arc Subareas, d. H. Windows are set that one get your own meter assigned.

Selbstverständlich ist es auch möglich, die Zählung in anderen Zählereinheiten oder Schrittgrößen (d. h. Schrittgröße ungleich eins) und mit anderen Grenzwerten durchzuführen.Of course it is also possible to count in other counter units or step sizes (i.e. Step size not equal to one) and with other limit values perform.

Claims (5)

Verfahren zur qualitativen Beurteilung von bedrucktem Material mittels mindestens eines photoelektrischen Sensors und einer mit diesem zusammenwirkenden Auswerteeinrichtung, dadurch gekennzeichnet, daß ein Bildbereich des inspizierten Materials einem Zähler zugeordnet erfaßt wird, daß Auf- und Abwärtszählen eines Zählerstandes des Zählers erfolgt, wenn der inspizierte Bildbereich fehlerbehaftet und fehlerfrei ist.Procedures for the qualitative assessment of printed material by means of at least one photoelectric sensor and one with this cooperating evaluation device, thereby characterized that an image area of the inspected Material assigned to a counter is recorded that opening and closing Counting down a counter reading of the counter occurs when the inspected image area contains errors and is flawless. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Zählerstand des Zählers um eine Zähleinheit erhöht wird, wenn der inspizierte Bildbereich fehlerbehaftet ist und daß der Zählerstand des Zählers um eine Zähleinheit erniedrigt wird, wenn der inspizierte Bereich fehlerfrei ist.A method according to claim 1, characterized in that the counter reading of the counter by one counting unit is increased when the inspected image area is faulty and that the counter reading of the counter is decreased by one counting unit if the inspected area is free of defects. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Zählerstand nur bis zu einem unteren Grenzwert verringert wird.Method according to one of claims 1 or 2, characterized characterized that the counter reading only up to one lower limit is reduced. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß bei Erreichen eines oberen Grenzwertes des Zählerstandes ein Signal ausgelöst wird.Method according to one of claims 1 or 2, characterized characterized in that when reaching an upper Limit of the counter reading a signal is triggered. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Bildbereich ein ganzer Bogen oder ein Rapport einer Bahn festgelegt wird.A method according to claim 1, characterized in that as a picture area a whole sheet or a repeat a path is determined.
EP99118436A 1996-04-02 1997-04-01 Process for assessing the quality of processed material Expired - Lifetime EP0987110B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19613083 1996-04-02
DE19613083A DE19613083A1 (en) 1996-04-02 1996-04-02 Procedure for the qualitative assessment of processed material
EP97920565A EP0892722B1 (en) 1996-04-02 1997-04-01 Process for assessing the quality of processed material

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EP97920565A Division EP0892722B1 (en) 1996-04-02 1997-04-01 Process for assessing the quality of processed material

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EP0987110A1 true EP0987110A1 (en) 2000-03-22
EP0987110B1 EP0987110B1 (en) 2002-01-16

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EP97920565A Expired - Lifetime EP0892722B1 (en) 1996-04-02 1997-04-01 Process for assessing the quality of processed material

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US (1) US6333987B1 (en)
EP (2) EP0987110B1 (en)
JP (1) JPH11507305A (en)
DE (3) DE19613083A1 (en)
ES (2) ES2165605T3 (en)
WO (1) WO1997036749A1 (en)

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ES2310814T3 (en) * 2004-03-23 2009-01-16 KOENIG & BAUER AG PROCEDURE FOR THE IDENTIFICATION OF AN INDIVIDUAL COPY WITH A PRINT IMAGE OF DEFECTIVE QUALITY ON A PRINTING MATERIAL WITH VARIOUS COPIES.
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DE59706033D1 (en) 2002-02-21
WO1997036749A1 (en) 1997-10-09
DE19613083A1 (en) 1997-10-09
ES2165605T3 (en) 2002-03-16
US6333987B1 (en) 2001-12-25
EP0892722B1 (en) 2001-11-07
EP0892722A1 (en) 1999-01-27
DE59705282D1 (en) 2001-12-13
ES2170563T3 (en) 2002-08-01
JPH11507305A (en) 1999-06-29
EP0987110B1 (en) 2002-01-16

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