EP0440576B1 - Device for invalidating valuable documents - Google Patents

Device for invalidating valuable documents Download PDF

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Publication number
EP0440576B1
EP0440576B1 EP91810019A EP91810019A EP0440576B1 EP 0440576 B1 EP0440576 B1 EP 0440576B1 EP 91810019 A EP91810019 A EP 91810019A EP 91810019 A EP91810019 A EP 91810019A EP 0440576 B1 EP0440576 B1 EP 0440576B1
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EP
European Patent Office
Prior art keywords
trough
centrifugal wheel
ink
orifice
shutter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91810019A
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German (de)
French (fr)
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EP0440576A1 (en
Inventor
Claus Dieter Barrois
Philipp A. Dieterich
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.)
KBA Notasys SA
Original Assignee
De la Rue Giori SA
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Publication date
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Publication of EP0440576A1 publication Critical patent/EP0440576A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
    • B41F11/02—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination for securities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/16—Slinger type

Definitions

  • the invention relates to a device for canceling security prints printed on print media with at least one color reservoir and with at least one device for applying color to security prints recognized as misprints.
  • Such a validation device in the form of a validation printing unit is mentioned in EP-B 0 167 196 by the same applicant in the context of a method for processing banknotes or sheets of notes into bundles of notes.
  • print carriers printed with security prints in the form of sheets of security or sheets of security are first inspected to determine whether there are misprints.
  • the security prints recognized as misprints are provided with a marking which can be read by a detector.
  • the print media run past a reading device which has as many detectors as there are longitudinal rows for checking all the longitudinal rows. These detectors read the marks on the misprints and enter their positions into a computer where these misprint positions are stored.
  • the print media arrive in the cancellation printing unit, which is controlled by this computer and prints all misprints with a cancellation cancellation.
  • the print media then pass through a numbering machine in which only the perfect security prints are numbered consecutively.
  • the print carriers are then cut into individual value notes and the misprints, which are clearly marked as rejects by the cancellation stamp, are separated out, while the perfect value notes are bundled with complete ones Number sequence can be summarized.
  • the detailed structure of this cancellation printing unit and the way in which it is controlled are not described in EP-B-0 167 196.
  • Validation devices are already known which work with controlled paint spray nozzles, so that the printing medium moved past does not need to mechanically touch the device.
  • these paint spray nozzles have the disadvantage that they clog easily, in particular due to the paint drying in the event of a long period of rest or interruption of operation, so that frequent cleaning and maintenance are required.
  • the present invention has for its object to provide a non-contact improved cancellation device of the type mentioned, in which a blockage by drying ink is practically excluded, which is simple to set up and control and is also easy to maintain.
  • the centrifugal wheel only dips into the paint during the very short period of the actual validation process, but is otherwise always outside the color, so that no undesired layer of paint can build up on this centrifugal wheel.
  • the conditions for each devaluation are therefore the same and are not changed by prolonged operation due to increasing color contamination of the blast wheel.
  • an adjustable doctor blade is preferably also provided, which rests against the centrifugal wheel in the rest position of the trough and strips off the paint adhering to it, while the doctor blade is removed from the centrifugal wheel in the working position.
  • the device has a plurality of validation units E arranged next to one another, all of which are constructed identically and past which print carriers are guided in the direction of the arrow (FIG. 1), which run over a transport cylinder 14.
  • a print carrier P in the form of a paper web on which security prints, for example banknote or stamp prints, are printed in the form of a matrix in longitudinal and transverse rows.
  • cancellation units E is provided as the paper web has longitudinal rows running in the direction of transport, with one validation unit E being arranged in front of each longitudinal row.
  • the device according to FIG. 2 shows four cancellation units E, the left cancellation unit being shown at a distance from the others to illustrate that its positions can be individually adjusted.
  • each validation unit E consists of a frame 1, a vertically displaceable trough 3 for receiving paint 4, a centrifugal wheel 7 which sits on a horizontal drive shaft 8 installed above the trough 3 and is covered by a hood 9 fastened to the frame 1 , and from a vertically adjustable diaphragm 11. All frames 1 of the device are slidably arranged on a common traverse 2, which is oriented parallel to the axis of the transport cylinder 14, and can be fixed in the desired position by a screw 2a. The centrifugal wheels 7 of all validation units E sit on a common drive shaft 8 and rotate continuously.
  • each centrifugal wheel 7 has a region 7a close to the circumference in the form of a thin disk, which is formed on a substantially thicker hub 7b, which in turn is seated on the drive shaft 8 common to all centrifugal wheels 7.
  • the device according to the figures is shown on a scale of 1: 1, i.e. the disk-shaped, circumferential area 7a of the centrifugal wheel has a thickness of only about 2 mm, while the width is one Frame 1 is approximately 18 mm.
  • the tub 3 with the help of an actuator 6 vertically between a raised working position, which is shown with solid lines, and a lowered rest position 3 'adjustable, which is indicated by dash-dotted lines.
  • the actuator 6 is a pressure-actuated cylinder, specifically a pneumatic cylinder.
  • the color level 5 is so high that the blast wheel 7 dips into the paint 4 with its area 7a.
  • the color level 5 ' is so deep that the impeller 7 is not immersed in the color 4.
  • the hood 9 has an inclined wall section 9a, which is at a small distance in front of the circumference of the transport cylinder 14 and which has an opening 10.
  • the screen 11 is fastened to the bottom 3b of the tub 3 and consists of a substantially vertically oriented narrow plate, the upper area of which is provided with an opening 12 and angled so that it runs parallel to the inclined wall section 9a of the hood 9.
  • the opening 12 of the diaphragm 11 drawn with solid lines is in alignment with the opening 10 of the hood 9; in the rest position of the tub 3, however, the opening 10 is covered by the dash-dotted aperture 11.
  • the tub 3 is always supplied with paint 4 in sufficient quantity such that the level of the color within the tub 3 is at least approximately constant remains.
  • a doctor blade 13 is also provided, which cooperates with the centrifugal wheel 7 on the side opposite the screen 11 and forms the upper, angled part of an otherwise essentially vertically oriented stand 14, which is also fastened to the bottom 3b of the tub 3 .
  • the profile of this doctor blade 13 is adapted to the profile of the centrifugal wheel 7 and therefore, in the example under consideration, as shown in FIG. 4, has a slot 13a, the width of which is adapted to the thickness of the region 7a of the centrifugal wheel 7 close to the circumference.
  • the squeegee 13 which can be adjusted with this tub 3 is raised so far that it is removed from the centrifugal wheel 7 rotating in the direction of the curved arrow according to FIG. 1; 7 by the area 7a engaging in the slot 13a so that the paint is stripped off the spinner 7 when it emerges from the tub 3.
  • the actuators 6 are individually controlled during operation of the device by means of control valves (not shown) as a function of the positions of those security prints on the paper web which were recognized as misprints and should therefore be canceled by sprayed-on paint. Whenever a misprint to be devalued passes through the validation unit E in one or more of the longitudinal rows of the paper web, that is to say is moved past the relevant opening 10, the actuator 6, which is then actuated briefly, lifts the tub 3, which was then in its lower rest position, into it upper working position.
  • the diaphragm 11 opens the opening 10
  • the doctor blade 13 is removed from the centrifugal wheel 7 and this centrifugal wheel 7 now dips into the paint 4, so that the paint flung away from the circumference of the centrifugal wheel 7, indicated schematically in FIG. 1, is sprayed through the opening 12 and the opening 10 onto the relevant security impression.
  • the actuator 6 brings the tub 3 back into its lower rest position, so that the color level drops below the centrifugal wheel 7 and the screen 11 covers the opening 10; the paint then thrown off the centrifugal wheel 7 can therefore no longer emerge from the hood 9.
  • the doctor blade 13 which is then in contact with the centrifugal wheel 7 strips off the ink which is still adhering, so that no thickening or drying ink layers can adhere to the centrifugal wheel 7 when the device is at rest.
  • the individual control of the actuators 6 advantageously takes place, as mentioned in the introduction to the description, by a computer in which the positions of the security prints to be canceled are stored on the print media and which temporarily opens the control valve of the actuator 6 in question at the correct time.
  • the storage of the Misprint positions in the computer are carried out, for example, by optical detectors which locate the security impressions previously marked with a visual inspection, or by test detectors which automatically carry out a quality control of the security impressions and the positions of the misprints detected for storage in the Enter the calculator.
  • the invention is not limited to the exemplary embodiment described, but rather allows for numerous variants with regard to the design and arrangement of the actuator, the centrifugal wheel, the diaphragm and the doctor blade.
  • the diaphragm and the doctor blade could also be displaced by means of separate actuators which move synchronously with the trough, with the doctor blade being able to move essentially horizontally, for example.
  • the print media can also be value sheets or individual notes.

Abstract

The device has the same number of invalidating units (E) arranged next to one another as there are longitudinal rows of printed vouchers provided on the print carriers (P). Each invalidating unit (E) has a frame (1), a trough (3) which is vertically displaceable therein for receiving ink (4), an impeller (7) which rotates constantly above the trough (3) and a shutter (11) which interacts with an opening (10) of a hood (9) which covers the impeller (7). The trough (3) is adjustable by a controlled adjustment element (6) between a raised operating position in which the impeller (7) dips into the ink and the shutter (11) releases the opening (10), and a lowered position of rest in which the impeller (7) does not dip into the ink and the opening (10) is covered by the shutter (11). The control takes place in each case whenever a printed voucher in one or more of the longitudinal rows of the print carriers, which is to be invalidated after having been detected as an incorrect print, passes the opening (10) of the invalidating unit concerned so that this faulty print is sprayed with ink by the impeller (7) through the opening (10) which is then free. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Entwerten von auf Druckträgern gedruckten Wertscheindrucken mit wenigstens einem Farbreservoir und mit wenigstens einer Einrichtung zum Aufbringen von Farbe auf als Fehldrucke erkannte Wertscheindrucke.The invention relates to a device for canceling security prints printed on print media with at least one color reservoir and with at least one device for applying color to security prints recognized as misprints.

Eine derartige Entwertungsvorrichtung in Form eines Entwertungsdruckwerks wird in der EP-B 0 167 196 der gleichen Anmelderin im Rahmen eines Verfahrens zum Verarbeiten von Wertscheinbahnen oder Wertscheinbogen zu Wertscheinbündeln erwähnt. Gemäss diesem Verfahren werden mit Wertscheindrucken bedruckte Druckträger in Form von Wertscheinbahnen oder Wertscheinbogen, deren Wertscheindrucke matrizenförmig in Querreihen und Längsreihen angeordnet sind, zunächst daraufhin inspiziert, ob Fehldrucke vorhanden sind. Die als Fehldrucke erkannten Wertscheindrucke werden mit einer von einem Detektor lesbaren Markierung versehen. Zur Verarbeitung laufen die Druckträger an einem Lesegerät vorbei, das zur Kontrolle aller Längsreihen so viele Detektoren aufweist, wie Längsreihen vorhanden sind. Diese Detektoren lesen die Markierungen auf den Fehldrucken und geben deren Positionen in einen Rechner ein, wo diese Fehldruckpositionen gespeichert werden. Dann gelangen die Druckträger in das Entwertungsdruckwerk, welches von diesem Rechner gesteuert wird und alle Fehldrucke mit einem Entwertungsaufdruck bedruckt. Anschliessend durchlaufen die Druckträger eine Numeriermaschine, in welcher nur die einwandfreien Wertscheindrucke fortlaufend numeriert werden. Danach werden die Druckträger in Einzelwertscheine zerschnitten und die durch den Entwertungsaufdruck eindeutig als Ausschuss gekennzeichneten Fehldrucke ausgesondert, während die einwandfreien Wertscheine zu Bündeln mit kompletter Nummernsequenz zusammengefasst werden. Der nähere Aufbau dieses Entwertungsdruckwerks und die Art und Weise seiner Steuerung sind in der EP-B-0 167 196 nicht beschrieben.Such a validation device in the form of a validation printing unit is mentioned in EP-B 0 167 196 by the same applicant in the context of a method for processing banknotes or sheets of notes into bundles of notes. According to this method, print carriers printed with security prints in the form of sheets of security or sheets of security, the security prints of which are arranged in the form of a matrix in transverse rows and longitudinal rows, are first inspected to determine whether there are misprints. The security prints recognized as misprints are provided with a marking which can be read by a detector. For processing, the print media run past a reading device which has as many detectors as there are longitudinal rows for checking all the longitudinal rows. These detectors read the marks on the misprints and enter their positions into a computer where these misprint positions are stored. Then the print media arrive in the cancellation printing unit, which is controlled by this computer and prints all misprints with a cancellation cancellation. The print media then pass through a numbering machine in which only the perfect security prints are numbered consecutively. The print carriers are then cut into individual value notes and the misprints, which are clearly marked as rejects by the cancellation stamp, are separated out, while the perfect value notes are bundled with complete ones Number sequence can be summarized. The detailed structure of this cancellation printing unit and the way in which it is controlled are not described in EP-B-0 167 196.

Man kennt bereits Entwertungsvorrichtungen, die mit gesteuerten Farbspritzdüsen arbeiten, so dass also der vorbeibewegte Druckträger die Vorrichtung nicht mechanisch zu berühren braucht. Allerdings haben diese Farbspritzdüsen den Nachteil, dass sie leicht verstopfen, insbesondere durch die bei längerer Ruhezeit oder Betriebsunterbrechung trocknende Farbe, so dass eine häufige Reinigung und Wartung erforderlich ist.Validation devices are already known which work with controlled paint spray nozzles, so that the printing medium moved past does not need to mechanically touch the device. However, these paint spray nozzles have the disadvantage that they clog easily, in particular due to the paint drying in the event of a long period of rest or interruption of operation, so that frequent cleaning and maintenance are required.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine berührungslos arbeitende verbesserte Entwertungsvorrichtung der genannten Art zu schaffen, bei welcher eine Verstopfung durch trocknende Farbe praktisch ausgeschlossen ist, welche einfach aufgebaut und zu steuern und ausserdem leicht zu warten ist.The present invention has for its object to provide a non-contact improved cancellation device of the type mentioned, in which a blockage by drying ink is practically excluded, which is simple to set up and control and is also easy to maintain.

Diese Aufgabe wird erfindungsgemäss durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst.This object is achieved according to the invention by the features specified in the characterizing part of claim 1.

Bei der Vorrichtung nach der Erfindung werden enge düsenartige Oeffnungen zum Durchtritt der Farbe und damit mögliche Verstopfungen mit Sicherheit vermieden. Ausserdem taucht das Schleuderrad nur während der sehr kurzen Zeitspanne des eigentlichen Entwertungsvorgangs in die Farbe ein, befindet sich sonst jedoch stets ausserhalb der Farbe, so dass sich keine unerwünschte Farbschicht auf diesem Schleuderrad ansetzen kann. Die Bedingungen bei jeder Entwertung sind daher gleich und werden nicht bei längerem Betrieb durch eine zunehmende Farbverschmutzung des Schleuderrades geändert.In the device according to the invention, narrow nozzle-like openings for the passage of the paint and thus possible blockages are avoided with certainty. In addition, the centrifugal wheel only dips into the paint during the very short period of the actual validation process, but is otherwise always outside the color, so that no undesired layer of paint can build up on this centrifugal wheel. The conditions for each devaluation are therefore the same and are not changed by prolonged operation due to increasing color contamination of the blast wheel.

Vorzugsweise ist ausserdem noch eine verstellbare Rakel vorgesehen, welche in der Ruhestellung der Wanne am Schleuderrad anliegt und die an diesem anhaftende Farbe abstreift, während in der Arbeitsstellung die Rakel vom Schleuderrad entfernt ist.In addition, an adjustable doctor blade is preferably also provided, which rests against the centrifugal wheel in the rest position of the trough and strips off the paint adhering to it, while the doctor blade is removed from the centrifugal wheel in the working position.

Weitere zweckmässige Ausgestaltungen der Erfindung ergeben sich aus den abhängigen Patentansprüchen.Further expedient refinements of the invention result from the dependent patent claims.

Die Erfindung wird anhand der Zeichnungen an einem Ausführungsbeispiel näher erläutert. Es zeigen:

  • Figur 1 eine Seitenansicht einer Vorrichtung nach der Erfindung, im Schnitt längs der Linie I-I nach Figur 2, welcher das Innere einer von mehreren Entwertungseinheiten der Vorrichtung darstellt,
  • Figur 2 eine Ansicht der Vorrichtung im Sinne des Pfeils II nach Figur 1
  • Figur 3 eine Seitenansicht eines einzelnen Schleuderrades der Vorrichtung nach den Figuren 1 und 2 und
  • Figur 4 einen Axialschnitt des Schleuderrades nach Figur 3 zusammen mit der schematischen Darstellung der verstellbaren Rakel und der auf der gegenüberliegenden Seite fortgeschleuderten Farbe.
The invention is explained in more detail with reference to the drawings using an exemplary embodiment. Show it:
  • 1 shows a side view of a device according to the invention, in section along the line II according to FIG. 2, which represents the interior of one of several cancellation units of the device,
  • Figure 2 is a view of the device in the direction of arrow II of Figure 1
  • Figure 3 is a side view of a single centrifugal wheel of the device according to Figures 1 and 2 and
  • FIG. 4 shows an axial section of the centrifugal wheel according to FIG. 3 together with the schematic illustration of the adjustable doctor blade and the color flung away on the opposite side.

Nach den Figuren 1 und 2 weist die Vorrichtung mehrere nebeneinander angeordnete Entwertungseinheiten E auf, die alle gleich aufgebaut sind und an denen Druckträger im Sinne des Pfeils (Fig. 1) vorbeigeführt werden, die über einen Transportzylinder 14 verlaufen. Im betrachteten Beispiel handelt es sich um einen Druckträger P in Form einer Papierbahn, auf welcher Wertscheindrucke, beispielsweise Banknoten- oder Briefmarkendrucke, matrizenförmig in Längs- und Querreihen gedruckt sind. Dabei sind so viele Entwertungseinheiten E vorgesehen, wie die Papierbahn in Transportrichtung verlaufende Längsreihen aufweist, wobei je eine Entwertungseinheit E vor jeder Längsreihe justiert angeordnet ist. Die Vorrichtung nach Figur 2 zeigt vier Entwertungseinheiten E, wobei die linke Entwertungseinheit im Abstand von den übrigen dargestellt ist, um zu veranschaulichen, dass ihre Positionen individuell einstellbar sind.According to FIGS. 1 and 2, the device has a plurality of validation units E arranged next to one another, all of which are constructed identically and past which print carriers are guided in the direction of the arrow (FIG. 1), which run over a transport cylinder 14. In the example considered, it is a print carrier P in the form of a paper web on which security prints, for example banknote or stamp prints, are printed in the form of a matrix in longitudinal and transverse rows. There are so many cancellation units E is provided as the paper web has longitudinal rows running in the direction of transport, with one validation unit E being arranged in front of each longitudinal row. The device according to FIG. 2 shows four cancellation units E, the left cancellation unit being shown at a distance from the others to illustrate that its positions can be individually adjusted.

Nach Figur 1 besteht jede Entwertungseinheit E aus einem Gestell 1, einer vertikal verschiebbaren Wanne 3 zur Aufnahme von Farbe 4, einem Schleuderrad 7, das auf einer oberhalb der Wanne 3 installierten horizontalen Antriebswelle 8 sitzt und von einer am Gestell 1 befestigten Haube 9 abgedeckt wird, und aus einer vertikal verstellbaren Blende 11. Alle Gestelle 1 der Vorrichtung sind auf einer gemeinsamen Traverse 2, welche parallel zur Achse des Transportzylinders 14 orientiert ist, verschiebbar angeordnet und können in der gewünschten Position durch je eine Schraube 2a fixiert werden. Die Schleuderräder 7 aller Entwertungseinheiten E sitzen auf einer gemeinsamen Antriebswelle 8 und rotieren ständig.According to FIG. 1, each validation unit E consists of a frame 1, a vertically displaceable trough 3 for receiving paint 4, a centrifugal wheel 7 which sits on a horizontal drive shaft 8 installed above the trough 3 and is covered by a hood 9 fastened to the frame 1 , and from a vertically adjustable diaphragm 11. All frames 1 of the device are slidably arranged on a common traverse 2, which is oriented parallel to the axis of the transport cylinder 14, and can be fixed in the desired position by a screw 2a. The centrifugal wheels 7 of all validation units E sit on a common drive shaft 8 and rotate continuously.

Nach den Figuren 3 und 4 weist jedes Schleuderrad 7 einen umfangsnahen Bereich 7a in Form einer dünnen Scheibe auf, welcher an einer wesentlich dickeren Nabe 7b angeformt ist, die ihrerseits drehfest auf der allen Schleuderrädern 7 gemeinsamen Antriebswelle 8 sitzt. Im Falle, dass es sich bei den Wertscheindrucken um Briefmarkendrucke handelt, ist die Vorrichtung nach den Figuren im Masstab 1:1 dargestellt, das heisst, der scheibenförmige, umfangsnahe Bereich 7a des Schleuderrads hat eine Dicke von nur etwa 2 mm, während die Breite eines Gestells 1 ungefähr 18 mm beträgt.According to FIGS. 3 and 4, each centrifugal wheel 7 has a region 7a close to the circumference in the form of a thin disk, which is formed on a substantially thicker hub 7b, which in turn is seated on the drive shaft 8 common to all centrifugal wheels 7. In the event that the security prints are postage stamp prints, the device according to the figures is shown on a scale of 1: 1, i.e. the disk-shaped, circumferential area 7a of the centrifugal wheel has a thickness of only about 2 mm, while the width is one Frame 1 is approximately 18 mm.

Nach Figur 1 ist die Wanne 3 mit Hilfe eines Stellglieds 6 vertikal zwischen einer angehobenen Arbeitsstellung, die mit ausgezogenen Linien dargestellt ist, und einer abgesenkten Ruhestellung 3′ verstellbar, welche strichpunktiert angedeutet ist. Im betrachteten Beispiel ist das Stellglied 6 ein druckmittelbetätigter Zylinder, und zwar ein pneumatischer Zylinder. In der angehobenen Arbeitsstellung der Wanne 3 ist das Farbniveau 5 so hoch, dass das Schleuderrad 7 mit seinem Bereich 7a in die Farbe 4 eintaucht. In der abgesenkten Ruhestellung der Wanne 3 liegt dagegen das Farbniveau 5′ so tief, dass das Schleuderrad 7 nicht in die Farbe 4 eintaucht.According to Figure 1, the tub 3 with the help of an actuator 6 vertically between a raised working position, which is shown with solid lines, and a lowered rest position 3 'adjustable, which is indicated by dash-dotted lines. In the example considered, the actuator 6 is a pressure-actuated cylinder, specifically a pneumatic cylinder. In the raised working position of the tub 3, the color level 5 is so high that the blast wheel 7 dips into the paint 4 with its area 7a. In the lowered rest position of the tub 3, however, the color level 5 'is so deep that the impeller 7 is not immersed in the color 4.

Die Haube 9 hat einen geneigten, im kleinen Abstand vor dem Umfang des Transportzylinders 14 liegenden Wandabschnitt 9a, der eine Oeffnung 10 aufweist. Die Blende 11 ist im betrachteten Beispiel am Boden 3b der Wanne 3 befestigt und besteht aus einer im wesentlichen vertikal orientierten schmalen Platte, deren oberer Bereich mit einer Durchbrechung 12 versehen und abgewinkelt ist, so dass er parallel zum geneigten Wandabschnitt 9a der Haube 9 verläuft. In der Arbeitsstellung der Wanne 3 befindet sich die Durchbrechung 12 der mit durchgehenden Linien gezeichneten Blende 11 in Flucht mit der Oeffnung 10 der Haube 9; in der Ruhestellung der Wanne 3 dagegen wird die Oeffnung 10 durch die strichpunktiert angedeutete Blende 11 abgedeckt. Durch einen seitlichen Stutzen 3a der Wanne 3, welcher als Zu- und Ueberlauf dient und ein Langloch 1a des Gestells 1 durchsetzt, wird der Wanne 3 stets Farbe 4 in ausreichender Menge derart zugeführt, dass die Höhe des Farbniveaus innerhalb der Wanne 3 wenigstens näherungsweise konstant bleibt.The hood 9 has an inclined wall section 9a, which is at a small distance in front of the circumference of the transport cylinder 14 and which has an opening 10. In the example considered, the screen 11 is fastened to the bottom 3b of the tub 3 and consists of a substantially vertically oriented narrow plate, the upper area of which is provided with an opening 12 and angled so that it runs parallel to the inclined wall section 9a of the hood 9. In the working position of the tub 3, the opening 12 of the diaphragm 11 drawn with solid lines is in alignment with the opening 10 of the hood 9; in the rest position of the tub 3, however, the opening 10 is covered by the dash-dotted aperture 11. Through a side nozzle 3a of the tub 3, which serves as an inlet and overflow and passes through an elongated hole 1a of the frame 1, the tub 3 is always supplied with paint 4 in sufficient quantity such that the level of the color within the tub 3 is at least approximately constant remains.

Im betrachteten Beispiel ist ausserdem eine Rakel 13 vorgesehen, welche auf der der Blende 11 gegenüberliegenden Seite des Schleuderrads 7 mit diesem zusammenwirkt und den oberen, abgewinkelten Teil eines sonst im wesentlichen vertikal orientierten Ständers 14 bildet, der ebenfalls am Boden 3b der Wanne 3 befestigt ist. Das Profil dieser Rakel 13 ist dem Profil des Schleuderrades 7 angepasst und hat daher im betrachteten Beispiel, wie in Figur 4 dargestellt, einen Schlitz 13a, dessen Breite der Dicke des umfangsnahen Bereich 7a des Schleuderrads 7 angepasst ist. In der Arbeitsstellung der Wanne 3 ist die mit dieser Wanne 3 verstellbare Rakel 13 so weit angehoben, dass sie von dem im Sinne des gebogenen Pfeils nach Figur 1 rotierenden Schleuderrad 7 entfernt ist, in der Ruhestellung der Wanne 3 dagegen liegt die Rakel 13 am Schleuderrad 7 an, indem der Bereich 7a in den Schlitz 13a eingreift, so dass die Farbe vom Schleuderrad 7 abgestreift wird, wenn es aus der Wanne 3 auftaucht.In the example under consideration, a doctor blade 13 is also provided, which cooperates with the centrifugal wheel 7 on the side opposite the screen 11 and forms the upper, angled part of an otherwise essentially vertically oriented stand 14, which is also fastened to the bottom 3b of the tub 3 . The profile of this doctor blade 13 is adapted to the profile of the centrifugal wheel 7 and therefore, in the example under consideration, as shown in FIG. 4, has a slot 13a, the width of which is adapted to the thickness of the region 7a of the centrifugal wheel 7 close to the circumference. In the working position of the tub 3, the squeegee 13 which can be adjusted with this tub 3 is raised so far that it is removed from the centrifugal wheel 7 rotating in the direction of the curved arrow according to FIG. 1; 7 by the area 7a engaging in the slot 13a so that the paint is stripped off the spinner 7 when it emerges from the tub 3.

Die Stellglieder 6 werden beim Betrieb der Vorrichtung individuell mittels nicht dargestellter Steuerventile als Funktion der Positionen derjenigen Wertscheindrucke auf der Papierbahn gesteuert, welche als Fehldrucke erkannt wurden und daher durch aufgespritzte Farbe entwertet werden sollen. Jedesmal, wenn ein zu entwertender Fehldruck in einer oder mehreren der Längsreihen der Papierbahn die betreffende Entwertungseinheit E passiert, das heisst vor der betreffenden Oeffnung 10 vorbeibewegt wird, hebt das dann kurzzeitig betätigte Stellglied 6 die bis dahin in ihrer unteren Ruhestellung befindliche Wanne 3 in ihre obere Arbeitsstellung an. Dadurch gibt die Blende 11 die Oeffnung 10 frei, die Rakel 13 wird vom Schleuderrad 7 entfernt und dieses Schleuderrad 7 taucht nunmehr in die Farbe 4 ein, so dass die vom Umfang des Schleuderrads 7 fortgeschleuderte, in Figur 1 schematisch angedeutete Farbe durch die Durchbrechung 12 und die Oeffnung 10 hindurch auf den betreffenden Wertscheindruck aufgespritzt wird. Bevor der folgende, nicht zu entwertende Wertscheindruck die Oeffnung 10 passiert, bringt das Stellglied 6 die Wanne 3 wieder in ihre untere Ruhestellung, so dass das Farbniveau unter das Schleuderrad 7 absinkt und die Blende 11 die Oeffnung 10 abdeckt; die dann noch vom Schleuderrad 7 fortgeschleuderte Farbe kann daher nicht mehr aus der Haube 9 austreten. Gleichzeitig streift die dann am Schleuderrad 7 anliegende Rakel 13 die noch anhaftende Farbe ab, so dass sich in der Ruhestellung der Vorrichtung keine verdickenden bzw. trocknenden Farbschichten am Schleuderrad 7 festsetzen können.The actuators 6 are individually controlled during operation of the device by means of control valves (not shown) as a function of the positions of those security prints on the paper web which were recognized as misprints and should therefore be canceled by sprayed-on paint. Whenever a misprint to be devalued passes through the validation unit E in one or more of the longitudinal rows of the paper web, that is to say is moved past the relevant opening 10, the actuator 6, which is then actuated briefly, lifts the tub 3, which was then in its lower rest position, into it upper working position. As a result, the diaphragm 11 opens the opening 10, the doctor blade 13 is removed from the centrifugal wheel 7 and this centrifugal wheel 7 now dips into the paint 4, so that the paint flung away from the circumference of the centrifugal wheel 7, indicated schematically in FIG. 1, is sprayed through the opening 12 and the opening 10 onto the relevant security impression. Before the following, not to be devalued, security note passes through the opening 10, the actuator 6 brings the tub 3 back into its lower rest position, so that the color level drops below the centrifugal wheel 7 and the screen 11 covers the opening 10; the paint then thrown off the centrifugal wheel 7 can therefore no longer emerge from the hood 9. At the same time, the doctor blade 13 which is then in contact with the centrifugal wheel 7 strips off the ink which is still adhering, so that no thickening or drying ink layers can adhere to the centrifugal wheel 7 when the device is at rest.

In der Darstellung nach Figur 2 nimmt nur die Wanne 3 der zweiten Entwertungseinheit E von rechts ihre Ruhestellung ein, während die Wannen 3 der übrigen Entwertungseinheiten ihre angehobene Arbeitsstellung einnehmen.In the illustration according to FIG. 2, only the tub 3 of the second validation unit E assumes its rest position from the right, while the tubs 3 of the other validation units assume their raised working position.

Wenn mehrere unmittelbar aufeinanderfolgende Wertscheindrucke einer Längsreihe zu entwerten sind, dann bleibt selbstverständlich die betreffende Wanne 3 während der entsprechenden Zeitspanne in ihrer angehobenen Arbeitsstellung. So ist es beispielsweise im Falle von Briefmarkenbögen möglich, bei Bedarf eine gesamte Längsreihe zu entwerten.If several immediately consecutive security impressions of a longitudinal row are to be canceled, then the relevant trough 3 naturally remains in its raised working position during the corresponding period. For example, in the case of stamp sheets, it is possible to cancel an entire longitudinal row if necessary.

Die individuelle Steuerung der Stellglieder 6 geschieht vorteilhafterweise, wie in der Beschreibungseinleitung erwähnt, durch einen Rechner, in welchem die Positionen der zu entwertenden Wertscheindrucke auf den Druckträgern gespeichert werden und welcher zum korrekten Zeitpunkt das Steuerventil des betreffenden Stellglieds 6 vorübergehend öffnet. Die Speicherung der Fehldruckpositionen im Rechner erfolgt, wie ebenfalls in der Beschreibungseinleitung erwähnt, beispielsweise durch optische Detektoren, welche die zuvor aufgrund einer visuellen Inspektion mit Markierungen versehenen Wertscheindrucke lokalisieren, oder durch Prüfdetektoren, welche automatisch eine Qualitätskontrolle der Wertscheindrucke vornehmen und die Positionen festgestellter Fehldrucke zur Speicherung in den Rechner eingeben.The individual control of the actuators 6 advantageously takes place, as mentioned in the introduction to the description, by a computer in which the positions of the security prints to be canceled are stored on the print media and which temporarily opens the control valve of the actuator 6 in question at the correct time. The storage of the Misprint positions in the computer, as also mentioned in the introduction to the description, are carried out, for example, by optical detectors which locate the security impressions previously marked with a visual inspection, or by test detectors which automatically carry out a quality control of the security impressions and the positions of the misprints detected for storage in the Enter the calculator.

Die Erfindung ist nicht auf das beschriebene Ausführungsbeispiel beschränkt, sondern lässt hinsichtlich der Ausbildung und Anordnung des Stellglieds, des Schleuderrads, der Blende und der Rakel mannigfache Varianten zu. So könnten die Blende und die Rakel auch durch eigene, synchron mit der Wanne bewegte Stellglieder verschoben werden, wobei beispielsweise die Bewegung der Rakel im wesentlichen horizontal erfolgen könnte. Natürlich kann es sich bei den Druckträgern auch um Wertscheinbögen oder um einzelne Wertscheine handeln.The invention is not limited to the exemplary embodiment described, but rather allows for numerous variants with regard to the design and arrangement of the actuator, the centrifugal wheel, the diaphragm and the doctor blade. For example, the diaphragm and the doctor blade could also be displaced by means of separate actuators which move synchronously with the trough, with the doctor blade being able to move essentially horizontally, for example. Of course, the print media can also be value sheets or individual notes.

Claims (9)

  1. Apparatus for invalidating security prints printed on print carriers, with at least one ink reservoir and with at least one device for applying ink to security prints detected as misprints, characterized in that the ink reservoir is a trough (3) which is installed so as to be vertically displaceable in a stand (1) and which is adjustable by means of a controlled actuating member (6) between a lower position of rest and an upper working position, in that the device for applying the ink is a centrifugal wheel (7) which continuously rotates during operation and which is arranged in the stand (1) above the trough (3) on a horizontal drive shaft (8) and is covered by a cowl (9) having an orifice (10), in front of which the print carriers (P) are moved past, in that this centrifugal wheel (7) is located above the ink level (5′) in the position of rest of the trough (3), but dips into the ink (4) in the working position of the trough (3), and in that there is an adjustable shutter (11) which is movable in synchronism with the trough (3) and which exposes the orifice (10) of the cowl (9) in the working position of the trough (3), but covers this orifice (10) in the position of rest of the latter.
  2. Apparatus according to Claim 1, characterized in that, furthermore, in the stand (1) there is an adjustable doctor (13) interacting with the centrifugal wheel (7) and having a profile matched to the profile of the centrifugal wheel, and in that this doctor (13) bears against the centrifugal wheel (7) in the position of rest of the trough (3), preferably in front of the orifice (10), as seen in the direction of rotation of the said wheel, but is removed from the centrifugal wheel in the working position of the trough (3).
  3. Apparatus according to Claim 2, characterized in that the doctor (13) is mounted on a post (14) fastened to the trough (3).
  4. Apparatus according to one of Claims 1 to 3, characterized in that the circumferential region (7a) of the centrifugal wheel (7), which dips at least partially into the ink in the working position of the trough (3), consists of a thin annular disk, the thickness of which is 1 to 3 mm, preferably approximately 2 mm.
  5. Apparatus according to Claims 2 to 4, characterized in that the doctor (13) is equipped with a slot (13a) which opens out at its front edge and the width of which is matched to the thickness of the circumferential region (7a) of the centrifugal wheel (7).
  6. Apparatus according to one of Claims 1 to 5, characterized in that the shutter (11) is a plate which is fastened to the trough (3), preferably to its bottom (3b), and the upper region of which is located in front of the orifice (10) of the cowl (9) and has a perforation (12) which only in the working position of the trough (3) is aligned with the orifice (10) of the cowl (9), the wall portion (9a) of the cowl (9) having the orifice (10) preferably being inclined, and the upper region of the shutter (11) having the perforation (12) extending parallel to this.
  7. Apparatus according to one of Claims 1 to 6, characterized in that the actuating member (6) is a cylinder operated by pressure medium and controlled via a control valve.
  8. Apparatus according to one of Claims 1 to 7, for invalidating security prints printed in longitudinal and transverse rows on print carriers, the longitudinal rows extending in the direction of movement of the print carriers, characterized in that as many stands (1), each equipped with a trough (3), actuating member (6), centrifugal wheel (7), shutter (11) and, if appropriate, doctor (13), are arranged next to one another as there are longitudinal rows of security prints on the print carrier, in that the width of each stand (1) is at most equal to the width of one longitudinal row of the security prints, and in that the movements of all the troughs can be controlled individually as a function of the misprints present in one or more longitudinal rows.
  9. Apparatus according to Claim 8, characterized in that all the stands (1) are fastened adjustably on a common crossmember (2), and all the centrifugal wheels (7) are arranged on a common drive shaft (8).
EP91810019A 1990-01-17 1991-01-11 Device for invalidating valuable documents Expired - Lifetime EP0440576B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH139/90 1990-01-17
CH13990 1990-01-17

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EP0440576A1 EP0440576A1 (en) 1991-08-07
EP0440576B1 true EP0440576B1 (en) 1994-06-22

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EP (1) EP0440576B1 (en)
JP (1) JPH0542660A (en)
KR (1) KR910014215A (en)
CN (1) CN1053505A (en)
AT (1) ATE107578T1 (en)
AU (1) AU634127B2 (en)
CA (1) CA2033911A1 (en)
DE (1) DE59101959D1 (en)
RU (1) RU1830006C (en)

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Publication number Priority date Publication date Assignee Title
US5314119A (en) * 1992-04-20 1994-05-24 Latanick Equipment, Inc. Method and apparatus for applying thin coatings of fluid droplets
AU689680B2 (en) * 1995-02-13 1998-04-02 De La Rue Giori S.A. Apparatus for invalidating prints printed on printing carriers
DE10332212A1 (en) * 2003-07-16 2005-02-24 Koenig & Bauer Ag Apparatus for quality testing of specimens and a method for checking the quality of sheets
CN108407460A (en) * 2018-05-16 2018-08-17 温州华正包装有限公司 A kind of printing equipment of packaging bag
US11486293B2 (en) 2020-08-28 2022-11-01 Honda Motor Co., Ltd. Exhaust structure of internal combustion engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2199093A (en) * 1937-12-22 1940-04-30 Harry C Wolfenden Dye spattering machine
DE1121625B (en) * 1958-01-21 1962-01-11 Maurice Charles Clare Dampening device for rotary rubber printing machines
DE7613874U1 (en) * 1976-05-03 1976-09-30 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig, 8510 Fuerth DEVICE FOR APPLYING FLUXMITTEL TO CIRCUIT BOARDS
DE3564784D1 (en) * 1984-07-05 1988-10-13 De La Rue Giori Sa Method of converting webs or sheets of securities into bundles of securities

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EP0440576A1 (en) 1991-08-07
CA2033911A1 (en) 1991-07-18
RU1830006C (en) 1993-07-23
CN1053505A (en) 1991-07-31
ATE107578T1 (en) 1994-07-15
KR910014215A (en) 1991-08-31
US5097791A (en) 1992-03-24
DE59101959D1 (en) 1994-07-28
JPH0542660A (en) 1993-02-23
AU6931691A (en) 1991-07-18
AU634127B2 (en) 1993-02-11

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