EP1620265B2 - System for inspecting a printed image - Google Patents

System for inspecting a printed image Download PDF

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Publication number
EP1620265B2
EP1620265B2 EP04730545.3A EP04730545A EP1620265B2 EP 1620265 B2 EP1620265 B2 EP 1620265B2 EP 04730545 A EP04730545 A EP 04730545A EP 1620265 B2 EP1620265 B2 EP 1620265B2
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EP
European Patent Office
Prior art keywords
image
evaluation unit
printed
display
region
Prior art date
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Expired - Lifetime
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EP04730545.3A
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German (de)
French (fr)
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EP1620265A2 (en
EP1620265B1 (en
Inventor
Jörn SACHER
Harald Heinrich Willeke
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Koenig and Bauer AG
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Koenig and Bauer AG
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Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Priority to EP08166931A priority Critical patent/EP2011651B1/en
Publication of EP1620265A2 publication Critical patent/EP1620265A2/en
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Publication of EP1620265B1 publication Critical patent/EP1620265B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F33/00Indicating, counting, warning, control or safety devices
    • B41F33/0036Devices for scanning or checking the printed matter for quality control

Definitions

  • the invention relates to a system for inspecting a printed image according to claim 1.
  • a device for detecting printing errors or other errors in a printing machine wherein at least two cameras with a different image resolution at the output of the printing operation in the production direction of a web or a sheet are arranged one behind the other and send their respective output signal to a computer, wherein a screen and a Keyboard are connected to the computer, wherein in the production direction first camera, preferably a synchronized in their image recording with the production speed of the printing machine line scan, a coarser resolution than the subsequent second camera, preferably a CCD area camera, of the first in the direction of production camera recorded images of non-printed or printed in uniform color zones of the web or sheet that control in the direction of production second camera by their displacement transversely to the direction of production, these zones no longer to record systematically, but to record high-resolution images of zones in which the first camera in the production direction has already detected an error, wherein an image taken by the first camera or by the second camera can be displayed on the screen and by operating the keyboard respectively is comparable
  • a method and a device for controlling or regulating operations of a printing machine wherein at least one image pickup device is directed to the surface of a printed product, wherein the image pickup device delivers the surface of the printed product reproducing image information of a control and regulating circuit and wherein on a with the screen connected to the open-loop and closed-loop control circuit can be displayed individually or in sub-images, a target image, an actual image and a difference image, wherein, in the case of an impermissible deviation of the actual image from the target image determined by a comparison device of the control and regulation circuit. Picture an error signal can be output.
  • the helm belongs to a computerized system for quality control and quality control of printed matter produced by a printing press.
  • the control station has, for example, a multiplicity of different operating elements for controlling a color metering system arranged in the printing press in a console or a keyboard belonging to the control station.
  • the quality control is carried out densitometrically or spectrophotometrically.
  • the control station offers a printer the possibility of checking printed copies taken from current production and of making corrections deemed necessary by operating control elements.
  • the invention has for its object to provide a system for inspecting a printed image.
  • the achievable with the present invention consist in particular that a working during production without specimen removal system for inspection of a printed image is provided in its parameterization and in its user interface flexible and application-related preferably alone with integrated in the display area input device and adjustable is comfortable to use. All information required for a particular user group is clearly structured and clearly displayed on the same display area.
  • the system is easily expandable to perform control tasks. Defects in the quality of print images produced by the system during the inspection are displayed and preferably logged during the inspection and, if necessary, automatically lead to the marking or ejection of these deficient printed images by the system.
  • the single FIGURE shows a highly simplified representation of a display device 01, an evaluation unit 02, an image sensor 03 and several with a printing machine 06 applied to a print carrier 07 printed images 04.
  • the printing machine 06 is z.
  • the transfer cylinder 21 is employed against a parallel to its axis
  • a impression cylinder 22 wherein the impression cylinder 22 may be formed as a second transfer cylinder, which in turn cooperates with at least one associated therewith another forme cylinder (not shown).
  • the print carrier 07 is z. As a sheet 07 or a web of material 07, preferably a web 07.
  • the printing machine 06 prints either on a continuous web 07 in the transport direction T successive sequence of printed images 04 or printed a sequence of printed sheets 07 each with at least one print image 04 , wherein the printed sheets 07 are transported in the transport direction T.
  • the image sensor 03 z. B. a color camera 03, preferably a digital semiconductor camera 03 with at least one CCD chip, is directed with its image pickup area 23 on the print substrate 07, wherein the image pickup area 23 of the image sensor 03 at least partially images a printed image 07 applied to the print substrate 04.
  • the image sensor 03 is arranged, for example, at the output of the last printing unit of the printing press 06 in the direction of transport T of the print carrier 07.
  • the image sensor 03 detects z. B. the entire width B of the print carrier 07, wherein the width B of the print carrier 07 extends transversely to the transport direction T.
  • the image sensor 03 supplies an electronically evaluable image of at least part of a printed image 04, but preferably of the entire width B of the printed substrate 07, wherein along the width B of the print substrate 07 at least one print image 04 is applied to the print substrate 07.
  • the image sensor 03 is embodied as an area camera 03 or as a line camera 03, which in each case has an optical device 33, in particular an objective 33, suitable for detecting the desired image recording area 23.
  • An alternative arrangement of the image sensor 03 is that this is not directly downstream of the printing unit, but in one of the printing press 06, which arranged by the printing machine 06 printed images 04 and / or processing device or machine (not shown) is arranged.
  • the evaluation unit 02 which is designed in particular as a program-controlled, electronic computing system 02 and z. B. is located in a belonging to the printing machine 06 control station, receives via a data link 24, z. B. a data line 24, with the recorded image correlated data by the image sensor 03 transmits this data to the evaluation unit 02 or at least retrievable holds.
  • the data correlated with the recorded image are processed in such a way that the image can be displayed on a display surface 08 of the display device 01.
  • the display device 01 and the evaluation unit 02 are preferably connected to one another via a bidirectional data transmission path 31 or data line 31.
  • the image sensor 03, the evaluation unit 02 and the display device 01 together form a system for inspecting at least part of a print image 04 applied to a print substrate 07.
  • the functionality of this system can also be extended to control tasks, as will be explained below ,
  • the evaluation unit 02 is associated with a memory 26 in which data of at least part of the recorded images and / or data can be stored over part of a captured image.
  • the stored data at least the data of a particular image, serves as a reference in comparison with data from continuously updated images.
  • the connection between the evaluation unit 02 and the memory 26 is in a bidirectional data transmission path 27, z. B. data line 27.
  • comparing the data of a currently recorded image with the data of a previously recorded image or a stored reference image can be in the current printing process z.
  • d. H the intended accuracy that individual partial colors have when overprinting in multicolor printing. Dot gain, register accuracy as well as register accuracy play an important role in multicolor printing.
  • the print image 04 can be qualitatively judged on the basis of an identifying feature characterizing the print image 04 by checking either the recognition feature alone or the print image 04 together with the recognition feature by comparison with a reference image as to whether the recognition feature or print image 04 has the recognition feature belong to a particular class of recognition features or printed images 04, whether the recognition feature has a certain geometric contour and / or a specific relative arrangement to at least one further recognition feature.
  • These checks are preferably fault tolerant, ie the assessment takes into account permissible tolerance limits.
  • the evaluation unit 02 can be equipped with at least one output, from which the positioning command is transmitted via a data transmission path 28 to an actuating drive 29 influencing the printing process in the printing machine 06.
  • Such actuator 29 is z. B. in conjunction with a belonging to the printing unit inking unit or dampening unit, a circumferential register, a page register or a diagonal adjustment for at least one of the forme cylinder relative to its associated transfer cylinder 21 is provided.
  • the output of the evaluation unit 02 can also be used to a lighting device (not shown) for the image sensor 03, z. B. to activate a flash lamp to trigger or turn off.
  • the display device 01 has a graphics-capable display surface 08 with a plurality of differently controllable by the evaluation unit 02, window-like areas 09; 11; 12; 13; 14, wherein a first area 09 optionally displays a currently recorded image, a previously recorded image or a reference image and a second area 11 at least one input field 16; 17 and / or a control panel 18; 19 for setting and / or operation of the evaluation unit 02 and / or for setting and / or operation of the printing machine 06 has.
  • the system can be set with regard to at least one parameter, a function exerted by the system can be called up and / or triggered and / or a positioning command to be issued by the evaluation unit 02 can be input into the system or selected from a set of provided positioning commands.
  • a printed image 04 whose evaluated image indicates that it exceeds a permissible tolerance limit with regard to its quality to be assessed can be identified by means of a marking device (not shown) connected to the system and / or discharged by a conveyor (not shown), wherein the system can be set such that the evaluation unit 02 automatically triggers the marking of the printed image 04 by the marking device and / or the discharge by the conveyor upon detection of exceeding an allowable tolerance limit by the evaluation unit 02 z.
  • B. at its output sends a corresponding control command.
  • the conditions for triggering this control command are preferably selectable and adjustable on the display surface 08.
  • a third area 12 is provided on the display surface 08, the third area 12 indicating at least one designation of the evaluation unit 02 and / or of a job currently being processed in the printing machine 06. Also, in this third area 12 z. Example, whether the current job has undergone a change in its parameters relevant to the printing process.
  • the display area 08 can also have a fourth area 13, the fourth area 13 having at least one menu with a menu structure which opens at its selection with at least one function for operating and / or setting the evaluation unit 02 and / or for operating and / or setting the Printing machine 06 has.
  • the selectable in the fourth area 13 of the display area 08 from a menu function thus relates to z. B. setting up a new job to be processed by the printing press 06 or editing or changing an existing job, the second area 11 of the display area 08 depending on the selection made in the menu, a fixed sequence of input fields 16; 17 and / or control panels 18; 19 for setting and / or operation of the evaluation unit 02 and / or for setting and / or operation of the printing press 06 pretends.
  • a user is guided with respect to a functionality to be set in the system and / or the printing press 06, in that all settings required for the desired functionality are queried consistently one after the other, with a subsequent query requiring a response to the previous query.
  • an image stored in the memory 26 z. B. selectable by means of the displayable in the fourth region 13 of the display area 08 menu and in the first area 09 of the display surface 08 can be brought to the display.
  • Another in the fourth area 13 in the menu selectable function can, for.
  • Example consist of one or more allowable tolerance limits for the assessment determine the quality of the printed images 04 generated by the printing machine 06 or to put the system out of operation by an orderly shutdown of its functions, the latter is preferably executable only at standstill of the printing press 06 and its completion is displayed by the system by an appropriate message. It is advantageous for a quality characteristic to be assessed, in which an allowable tolerance limit is to be defined, to deposit a number of different sensitivity levels in the evaluation unit 02, for example, B.
  • sensitivity levels between five and twenty sensitivity levels, preferably ten sensitivity levels, with a suitable sensitivity level by means of the menus displayed in the fourth area 13 and / or the input fields 16; 17 and / or the control panels 18; 19 in the second area 11 selectable and is adjustable for the system.
  • a fifth region 14 can be provided on the display surface 08, the fifth region 14 indicating at least one status of the evaluation unit 02 and / or the printing press 06. Status displays in this fifth area 14 may, for. B. in the form of a pictogram.
  • the display surface 08 the first area 09 and the second area 11 arranged side by side and at least two of the five areas 09; 11; 12; 13; 14, preferably all five areas 09; 11; 12; 13; 14, at the same time.
  • the third, fourth and fifth regions 12; 13; 14 are preferably each formed in a line shape, wherein the display surface 08 displays at least the fourth region 13 and the fifth region 14 permanently.
  • the first area 09 of the display area 08 is video-capable and capable of displaying a sequence of several successive pictures in quick succession.
  • the first area 09 of the display surface 08 is thus capable of sequentially displaying images of print images 04 printed on the print substrate 07 or at least of parts of the printed images 04 printed on the print substrate 07 with the image sensor 03 sequentially in a sequence such as that completely or at least partially by the image sensor 03 fixed with respect to the printing press stationary image images 04 due to the transport speed of the print carrier 07, the image pickup area 23 of the image sensor 03 pass.
  • An image playback frequency of the first region 09 of the display surface 08 is therefore at least as large as an image recording frequency of the image sensor 03. According to the transport speed of the print carrier 07 can be such.
  • This film-like display of the printed images 04 has the advantage that z. B. color deviations of their tendency to be quickly recognizable, even if at a display speed of several frames per second, the single print image 04 is no longer discretely inspectable for operators of the printing press.
  • the display of a sequence of printed images 04 also visualizes in which areas of the successively printed printed images 04 such color deviations occur, so that the inking unit can be tracked zonally in its inking.
  • zone screws of the inking unit will then turn after a short time for the operating personnel of the printing press in the first area 09 of the display surface 08 running film of the printed images 04 recognizable by a reversal in the tendency of color deviation.
  • the electronic control of the display surface 08 is to be designed such that video signals can be processed and displayed.
  • the control must z. B. can process a sufficiently large signal bandwidth at a high speed.
  • the display surface 08 has at least one touch-sensitive field for operation and / or adjustment of the evaluation unit 02 and / or the printing press 06, wherein in particular in the second region 11, the input field 16; 17 and / or the control panel 18; 19 are configured for setting and / or operation of the evaluation unit 02 and / or for setting and / or operation of the printing press 06 as a touch-sensitive field.
  • the display surface 08 is thus preferably designed as a touch screen.
  • the display device 01 and / or the evaluation unit 02 have at least two operating modes, the operating modes being in a different design of the display surface 08 and / or in the scope, ie in particular in the number of displays shown on the display surface 08 and / or or in the scope of the operation and / or adjustment of the evaluation unit 02 and / or the printing machine 06 differ.
  • a change from a currently set operating mode to a larger operating range with respect to the displays and / or the operation and / or the setting of the evaluation unit 02 and / or the printing press 06 preferably depends on the proof of an authorization, this proof z.
  • the order of the displayed on the display surface 08 input fields 16; 17 and / or panels 18; 19 may depend on the currently set mode because z. B. in a certain mode not enabled input fields 16; 17 and / or panels 18; 19 preferably not even displayed or locked in this mode, so that with the input fields 16; 17 and / or control panels 18; 19 otherwise connected function is not executable.
  • the Operating modes differ z. Example is that in one mode only necessary to execute a print job functions are displayed, whereas in another mode z. B. all settings of the system up to the settings of the image sensor 03 and those of the printing press 06 are changeable.
  • the system in particular the display surface 08, has a function to prevent an unintentional or erroneous input on an input field 16; 17 and / or control panel 18; 19 and / or to cancel or delete an erroneous selection from the menu displayed in the fourth area 13 of the display area 08.
  • Also stored in the memory 26 data that are no longer needed are completely or partially z. B. by the operation of a specific control panel 18; 19 erasable.
  • the display surface 08 can in particular in its fifth region 14 z. For example, indicate how many printed images 04 have been produced in total and / or how many well-rated images 04 of the printing machine 06 at a current order already.
  • a z. B. with the displayable in the fourth area 13 of the display area 08 menu callable statistics function can bring information about a single image and / or multiple images for display. This information may preferably be stored in the memory 26 for a limited time and / or be able to be printed and printed there on the basis of a command that can be input to the system to a printer (not shown) connected to the evaluation unit 02.
  • the evaluation unit 02 advantageously has an operating system which supports a method for inter-process communication, which is designed to exchange complex data structures.
  • the operating system may be Windows NT4.0 ⁇ (or higher) or Windows 2000 ⁇ (or higher), and communication may be in accordance with the COM (Common Object Model) / DCOM (Distributed Component Object Model) standard.

Abstract

System for inspecting a printed image, comprising an evaluation unit, a display and an image scanner that is used to record at least part of an image printed on a print medium. The evaluation unit receives image data from the image scanner and can compare it with recorded data for a preceding or reference image. A graphical display device has a first display area for output of actual and reference images and a second area with an input and control panel for adjusting and controlling the evaluation unit and the printing machine. Independent claims are also included for the three further systems for inspecting a printed image.

Description

Die Erfindung betrifft ein System zur Inspektion eines Druckbildes gemäß Anspruch 1.The invention relates to a system for inspecting a printed image according to claim 1.

Durch die EP 0 554 811 A1 ist eine Vorrichtung zum Nachweis von Druckfehlern oder anderen Fehlern in einer Druckmaschine bekannt, wobei mindestens zwei Kameras mit einer unterschiedlichen Bildauflösung am Ausgang des Druckvorgangs in Produktionsrichtung einer Bahn oder eines Bogens hintereinander angeordnet sind und ihr jeweiliges Ausgangssignal einem Computer zuleiten, wobei ein Bildschirm und eine Tastatur an den Computer angeschlossen sind, wobei die in Produktionsrichtung erste Kamera, vorzugsweise eine in ihrer Bildaufnahme mit der Produktionsgeschwindigkeit der Druckmaschine synchronisierte Zeilenkamera, eine gröbere Auflösung aufweist als die nachfolgende zweite Kamera, vorzugsweise eine CCD-Flächenkamera, wobei von der in Produktionsrichtung ersten Kamera aufgenommene Bilder von nichtbedruckten oder in einheitlicher Farbe bedruckten Zonen der Bahn oder des Bogens die in Produktionsrichtung zweite Kamera durch ihre Verschiebung quer zur Produktionsrichtung dahingehend steuern, diese Zonen nicht mehr systematisch zu erfassen, sondern Bilder mit hoher Auflösung von Zonen aufzunehmen, in denen die in Produktionsrichtung erste Kamera bereits einen Fehler erkannt hat, wobei ein von der ersten Kamera oder von der zweiten Kamera aufgenommenes Bild jeweils auf dem Bildschirm darstellbar und durch Bedienung der Tastatur jeweils mit einem zuvor eingegebenen Referenzbild vergleichbar ist.By the EP 0 554 811 A1 a device for detecting printing errors or other errors in a printing machine is known, wherein at least two cameras with a different image resolution at the output of the printing operation in the production direction of a web or a sheet are arranged one behind the other and send their respective output signal to a computer, wherein a screen and a Keyboard are connected to the computer, wherein in the production direction first camera, preferably a synchronized in their image recording with the production speed of the printing machine line scan, a coarser resolution than the subsequent second camera, preferably a CCD area camera, of the first in the direction of production camera recorded images of non-printed or printed in uniform color zones of the web or sheet that control in the direction of production second camera by their displacement transversely to the direction of production, these zones no longer to record systematically, but to record high-resolution images of zones in which the first camera in the production direction has already detected an error, wherein an image taken by the first camera or by the second camera can be displayed on the screen and by operating the keyboard respectively is comparable to a previously entered reference image.

Durch die EP 1 291 767 A2 ist ein System zur Bedienung einer Druckmaschine bekannt, wobei zwei unterschiedliche Applikationen in zwei unterschiedlich großen Fenstern auf einem der Druckmaschine zugeordneten Monitor gleichzeitig dargestellt sind, wobei in einem der Fenster ein Original der Druckvorlage und in dem anderen Fenster Funktionen zur Bedienung der Druckmaschine dargestellt sind.By the EP 1 291 767 A2 a system for operating a printing machine is known, wherein two different applications are displayed simultaneously in two different sized windows on a monitor associated with the printing machine, wherein in one of the windows an original of the print template and in the other window functions for operating the printing press are shown.

Durch die US2002/0029703 A1 ist eine Vorrichtung zur Steuerung einer Druckmaschine bekannt, wobei diverse den Druckvorgang betreffende Steuerinformationen und Statusinformationen auf einem Monitor eines PC's dargestellt sind, wobei die Statusinformationen mit Bezug auf Druckseiten in Form von Symbolen dargestellt sindBy the US2002 / 0029703 A1 a device for controlling a printing machine is known, wherein various control information and status information concerning the printing process are displayed on a monitor of a PC, wherein the status information with respect to printed pages are represented in the form of symbols

Durch die DE 43 21 179 A1 sind ein Verfahren und eine Einrichtung zur Steuerung oder Regelung von Betriebsvorgängen einer drucktechnischen Maschine bekannt, wobei mindestens eine Bildaufnahmeeinrichtung auf die Oberfläche eines Druckerzeugnisses gerichtet ist, wobei die Bildaufnahmeeinrichtung ihre die Oberfläche des Druckerzeugnisses wiedergebende Bildinformationen einer Steuer- und Regelschaltung zuführt und wobei auf einem mit der Steuer- und Regelschaltung verbundenen Bildschirm wahlweise einzeln oder in Teilbildern ein Soll-Bild, ein Ist-Bild und ein Differenz-Bild darstellbar ist, wobei bei einer von einer Vergleichseinrichtung der Steuer- und Regelschaltung ermittelten unzulässigen Abweichung des Ist-Bildes vom Soll-Bild ein Fehlersignal ausgebbar ist.By the DE 43 21 179 A1 a method and a device for controlling or regulating operations of a printing machine are known, wherein at least one image pickup device is directed to the surface of a printed product, wherein the image pickup device delivers the surface of the printed product reproducing image information of a control and regulating circuit and wherein on a with the screen connected to the open-loop and closed-loop control circuit can be displayed individually or in sub-images, a target image, an actual image and a difference image, wherein, in the case of an impermissible deviation of the actual image from the target image determined by a comparison device of the control and regulation circuit. Picture an error signal can be output.

Im Fachbuch " Offsetdrucktechnik" von Helmut Teschner, 10. Auflage 1997, erschienen im Fachschriftenverlag, Fellbach, ISBN 3-921217-14-8 , werden auf den Seiten 10/108 bis 10/117 Ausführungen eines Steuerstandes "Heidelberg CPC" beschrieben. Der Steuerstand gehört zu einem rechnergestützten System zur Qualitätsüberwachung und Qualitätssteuerung von mit einer Druckmaschine produzierten Druckerzeugnissen. Der Steuerstand weist in einem Pult oder einer zum Steuerstand gehörenden Tastatur u. a. eine Vielzahl von verschiedenen Bedienelementen zur Steuerung eines in der Druckmaschine angeordneten Farbdosiersystems auf. Die Qualitätskontrolle erfolgt densitometrisch oder spektralfotometrisch. Der Steuerstand bietet einem Drucker die Möglichkeit, aus der laufenden Produktion entnommene Druckexemplare zu prüfen und durch Betätigung von Bedienelementen für nötig erachtete Korrekturen auszuführen.In the textbook " Offsetdrucktechnik "by Helmut Teschner, 10th edition 1997, published by the Fachschriftenverlag, Fellbach, ISBN 3-921217-14-8 , are described on pages 10/108 to 10/117 versions of a helm station "Heidelberg CPC". The helm belongs to a computerized system for quality control and quality control of printed matter produced by a printing press. The control station has, for example, a multiplicity of different operating elements for controlling a color metering system arranged in the printing press in a console or a keyboard belonging to the control station. The quality control is carried out densitometrically or spectrophotometrically. The control station offers a printer the possibility of checking printed copies taken from current production and of making corrections deemed necessary by operating control elements.

Der Erfindung liegt die Aufgabe zugrunde, ein System zur Inspektion eines Druckbildes zu schaffen.The invention has for its object to provide a system for inspecting a printed image.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst.The object is achieved by the features of claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass ein während der laufenden Produktion ohne Exemplarentnahme arbeitendes System zur Inspektion eines Druckbildes zur Verfügung gestellt wird, das in seiner Parametrierung und in seiner Bedienungsoberfläche flexibel und anwendungsbezogen vorzugsweise allein mit in der Anzeigefläche integrierte Eingabehilfsmittel einstellbar und in der Handhabung komfortabel ist. Alle für eine jeweilige Anwendergruppe erforderlichen Informationen werden klar strukturiert und übersichtlich auf derselben Anzeigefläche angezeigt. Das System ist in einfacher Weise zur Ausführung von Steuer- und Regelungsaufgaben erweiterbar. Während der Inspektion vom System erkannte Mängel in der Qualität mit der Druckmaschine produzierter Druckbilder werden angezeigt und vorzugsweise protokolliert und führen bei Bedarf durch das System selbsttätig zur Kennzeichnung oder Ausschleusung dieser mangelbehafteten Druckbilder.The achievable with the present invention consist in particular that a working during production without specimen removal system for inspection of a printed image is provided in its parameterization and in its user interface flexible and application-related preferably alone with integrated in the display area input device and adjustable is comfortable to use. All information required for a particular user group is clearly structured and clearly displayed on the same display area. The system is easily expandable to perform control tasks. Defects in the quality of print images produced by the system during the inspection are displayed and preferably logged during the inspection and, if necessary, automatically lead to the marking or ejection of these deficient printed images by the system.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben.An embodiment of the invention is illustrated in the drawing and will be described in more detail below.

Die einzige Figur zeigt in einer stark vereinfachten Darstellung eine Anzeigevorrichtung 01, eine Auswerteeinheit 02, einen Bildsensor 03 und mehrere mit einer Druckmaschine 06 auf einem Druckträger 07 aufgebrachte Druckbilder 04. Die Druckmaschine 06 ist z. B. als eine Rotationsdruckmaschine mit mindestens einem Druckwerk ausgebildet, wobei das Druckwerk mindestens einen mindestens eine Druckform tragenden Formzylinder (nicht dargestellt) und einen mit dem Formzylinder zusammenwirkenden Übertragungszylinder 21 aufweist. Der Übertragungszylinder 21 ist gegen einen zu seiner Achse A parallelen Gegendruckzylinder 22 angestellt, wobei der Gegendruckzylinder 22 als ein zweiter Übertragungszylinder ausgebildet sein kann, der seinerseits mit mindestens einem ihm zugeordneten weiteren Formzylinder (nicht dargestellt) zusammenwirkt. In dem in der Figur dargestellten Beispiel überträgt der Übertragungszylinder 21 pro Umdrehung in Richtung seines Umfangs U zwei Druckbilder 04 hintereinander, wobei in seiner axialen Richtung drei Druckbilder 04 nebeneinander angeordnet sind, sodass pro Umdrehung des Übertragungszylinders 21 in seiner Produktionsrichtung P auf dem in Transportrichtung T zwischen dem Übertragungszylinder 21 und dem Gegendruckzylinder 22 hindurchgeführten Druckträger 07 insgesamt sechs Druckbilder 04 aufgebracht werden.The single FIGURE shows a highly simplified representation of a display device 01, an evaluation unit 02, an image sensor 03 and several with a printing machine 06 applied to a print carrier 07 printed images 04. The printing machine 06 is z. Example, as a rotary printing machine with at least one printing unit, wherein the printing unit at least one at least one printing plate-carrying forme cylinder (not shown) and cooperating with the forme cylinder transfer cylinder 21st having. The transfer cylinder 21 is employed against a parallel to its axis A impression cylinder 22, wherein the impression cylinder 22 may be formed as a second transfer cylinder, which in turn cooperates with at least one associated therewith another forme cylinder (not shown). In the example shown in the figure transmits the transfer cylinder 21 per revolution in the direction of its circumference U two printed images 04 in succession, in its axial direction three printed images 04 are arranged side by side, so per revolution of the transfer cylinder 21 in its direction of production P in the transport direction T between the transfer cylinder 21 and the impression cylinder 22 passed through print carrier 07 a total of six printed images 04 are applied.

Der Druckträger 07 ist z. B. ein Druckbogen 07 oder eine Materialbahn 07, vorzugsweise eine Papierbahn 07. Dabei druckt die Druckmaschine 06 entweder auf einer kontinuierlichen Materialbahn 07 eine in Transportrichtung T aufeinander folgende Folge von Druckbilder 04 oder sie bedruckt eine Folge von Druckbogen 07 jeweils mit mindestens einem Druckbild 04, wobei die Druckbogen 07 in Transportrichtung T transportiert werden.The print carrier 07 is z. As a sheet 07 or a web of material 07, preferably a web 07. In this case, the printing machine 06 prints either on a continuous web 07 in the transport direction T successive sequence of printed images 04 or printed a sequence of printed sheets 07 each with at least one print image 04 , wherein the printed sheets 07 are transported in the transport direction T.

Der Bildsensor 03, z. B. eine Farbkamera 03, vorzugsweise eine digitale Halbleiterkamera 03 mit mindestens einem CCD-Chip, ist mit seinem Bildaufnahmebereich 23 auf den Druckträger 07 gerichtet, wobei der Bildaufnahmebereich 23 des Bildsensors 03 ein auf dem Druckträger 07 aufgebrachtes Druckbild 04 zumindest teilweise abbildet. Der Bildsensor 03 ist beispielsweise am Ausgang des in Transportrichtung T des Druckträgers 07 letzten Druckwerks der Druckmaschine 06 angeordnet. Der Bildsensor 03 erfasst z. B. die gesamte Breite B des Druckträgers 07, wobei sich die Breite B des Druckträgers 07 quer zu dessen Transportrichtung T erstreckt. Der Bildsensor 03 liefert ein elektronisch auswertbares Bild zumindest von einem Teil eines Druckbildes 04, vorzugsweise jedoch von der gesamten Breite B des bedruckten Druckträgers 07, wobei entlang der Breite B des Druckträgers 07 mindestens ein Druckbild 04 auf dem Druckträger 07 aufgebracht ist. Der Bildsensor 03 ist als eine Flächenkamera 03 oder als eine Zeilenkamera 03 ausgebildet, die jeweils eine zur Erfassung des gewünschten Bildaufnahmebereichs 23 geeignete optische Einrichtung 33, insbesondere ein Objektiv 33, aufweist. Eine alternative Anordnung des Bildsensors 03 besteht darin, dass dieser nicht unmittelbar am Druckwerk, sondern in einer der Druckmaschine 06 nachgeordneten, die von der Druckmaschine 06 produzierten Druckbilder 04 fördernden und/oder verarbeitenden Vorrichtung oder Maschine (nicht dargestellt) angeordnet ist.The image sensor 03, z. B. a color camera 03, preferably a digital semiconductor camera 03 with at least one CCD chip, is directed with its image pickup area 23 on the print substrate 07, wherein the image pickup area 23 of the image sensor 03 at least partially images a printed image 07 applied to the print substrate 04. The image sensor 03 is arranged, for example, at the output of the last printing unit of the printing press 06 in the direction of transport T of the print carrier 07. The image sensor 03 detects z. B. the entire width B of the print carrier 07, wherein the width B of the print carrier 07 extends transversely to the transport direction T. The image sensor 03 supplies an electronically evaluable image of at least part of a printed image 04, but preferably of the entire width B of the printed substrate 07, wherein along the width B of the print substrate 07 at least one print image 04 is applied to the print substrate 07. The image sensor 03 is embodied as an area camera 03 or as a line camera 03, which in each case has an optical device 33, in particular an objective 33, suitable for detecting the desired image recording area 23. An alternative arrangement of the image sensor 03 is that this is not directly downstream of the printing unit, but in one of the printing press 06, which arranged by the printing machine 06 printed images 04 and / or processing device or machine (not shown) is arranged.

Die Auswerteeinheit 02, die insbesondere als eine programmgesteuerte, elektronische Rechenanlage 02 ausgebildet und z. B. in einem zur Druckmaschine 06 gehörenden Leitstand angeordnet ist, empfängt via einer Datenübertragungsstrecke 24, z. B. einer Datenleitung 24, mit dem aufgenommenen Bild korrelierende Daten, indem der Bildsensor 03 diese Daten an die Auswerteeinheit 02 überträgt oder zumindest abrufbar bereithält. In der Auswerteeinheit 02 werden die mit dem aufgenommenen Bild korrelierenden Daten derart aufbereitet, dass das Bild auf einer Anzeigefläche 08 der Anzeigevorrichtung 01 angezeigt werden kann. Die Anzeigevorrichtung 01 und die Auswerteeinheit 02 sind vorzugsweise über eine bidirektionale Datenübertragungsstrecke 31 bzw. Datenleitung 31 miteinander verbunden. Der Bildsensor 03, die Auswerteeinheit 02 und die Anzeigevorrichtung 01 bilden zusammen ein System zur Inspektion zumindest von einem Teil eines auf einem Druckträger 07 aufgebrachten Druckbildes 04. Die Funktionalität dieses Systems kann jedoch auch auf Steuer- und Regelungsaufgaben erweitert werden, wie nachfolgend noch erläutert wird.The evaluation unit 02, which is designed in particular as a program-controlled, electronic computing system 02 and z. B. is located in a belonging to the printing machine 06 control station, receives via a data link 24, z. B. a data line 24, with the recorded image correlated data by the image sensor 03 transmits this data to the evaluation unit 02 or at least retrievable holds. In the evaluation unit 02, the data correlated with the recorded image are processed in such a way that the image can be displayed on a display surface 08 of the display device 01. The display device 01 and the evaluation unit 02 are preferably connected to one another via a bidirectional data transmission path 31 or data line 31. The image sensor 03, the evaluation unit 02 and the display device 01 together form a system for inspecting at least part of a print image 04 applied to a print substrate 07. However, the functionality of this system can also be extended to control tasks, as will be explained below ,

Der Auswerteeinheit 02 ist ein Speicher 26 zugeordnet, in dem Daten zumindest eines Teils der aufgenommenen Bilder und/oder Daten über einen Teil eines aufgenommenen Bildes gespeichert werden können. Die gespeicherten Daten, zumindest die Daten eines bestimmten Bildes, dienen als Referenz im Vergleich mit Daten von fortlaufend aktuell aufgenommenen Bildern. Die Verbindung zwischen der Auswerteeinheit 02 und dem Speicher 26 besteht in einer bidirektionalen Datenübertragungsstrecke 27, z. B. Datenleitung 27.The evaluation unit 02 is associated with a memory 26 in which data of at least part of the recorded images and / or data can be stored over part of a captured image. The stored data, at least the data of a particular image, serves as a reference in comparison with data from continuously updated images. The connection between the evaluation unit 02 and the memory 26 is in a bidirectional data transmission path 27, z. B. data line 27.

Durch einen in der Auswerteeinheit 02 ausgeführten Vergleich der Daten eines aktuell aufgenommenen Bildes mit den Daten eines zuvor aufgenommenen Bildes oder eines gespeicherten Referenzbildes läßt sich im laufenden Druckprozess z. B. eine Tonwertzunahme bei aufeinander folgend aufgenommenen Druckbildern 04 feststellen und/oder es lässt sich durch den Vergleich ermitteln, inwieweit eine Registerhaltigkeit der Druckbilder gegeben ist, d. h. ein deckungsgleiches Übereinstimmen in der Stellung des Druckbildes oder Satzspiegels zwischen Schön- und Widerdruck oder auch zwischen Ober- und Unterseite bei der Herstellung von beidseitigen Druckerzeugnissen. Gleichfalls ist durch den Vergleich ein Passer prüfbar, d. h. die vorgesehene Genauigkeit, die einzelne Teilfarben beim Übereinanderdruck im Mehrfarbendruck aufweisen. Die Tonwertzunahme, die Registergenauigkeit wie auch die Passergenauigkeit spielen im mehrfarbigen Druck eine wichtige Rolle.By running in the evaluation unit 02 comparing the data of a currently recorded image with the data of a previously recorded image or a stored reference image can be in the current printing process z. B. determine a Tonwertzunahme in successive recorded print images 04 and / or it can be determined by the comparison to what extent a register validity of the printed images is given, d. H. a congruent coincidence in the position of the printed image or typesetting mirror between perfecting or between the top and bottom in the production of double-sided printed matter. Likewise, by the comparison a passer testable, d. H. the intended accuracy that individual partial colors have when overprinting in multicolor printing. Dot gain, register accuracy as well as register accuracy play an important role in multicolor printing.

Darüber hinaus kann das Druckbild 04 anhand eines das Druckbild 04 kennzeichnenden Erkennungsmerkmals qualitativ beurteilt werden, indem entweder das Erkennungsmerkmal allein oder das Druckbild 04 zusammen mit dem Erkennungsmerkmal durch einen Vergleich mit einem Referenzbild dahingehend geprüft wird, ob das Erkennungsmerkmal oder das Druckbild 04 mit dem Erkennungsmerkmal einer bestimmten Klasse von Erkennungsmerkmalen oder Druckbildern 04 angehören, ob das Erkennungsmerkmal eine bestimmte geometrische Kontur und/oder eine bestimmte relative Anordnung zu mindestens einem weiteren Erkennungsmerkmal aufweist. Diese Prüfungen verlaufen vorzugsweise fehlertolerant, d. h. die Beurteilung erfolgt unter Berücksichtigung zulässiger Toleranzgrenzen.In addition, the print image 04 can be qualitatively judged on the basis of an identifying feature characterizing the print image 04 by checking either the recognition feature alone or the print image 04 together with the recognition feature by comparison with a reference image as to whether the recognition feature or print image 04 has the recognition feature belong to a particular class of recognition features or printed images 04, whether the recognition feature has a certain geometric contour and / or a specific relative arrangement to at least one further recognition feature. These checks are preferably fault tolerant, ie the assessment takes into account permissible tolerance limits.

Es ist vorteilhaft, wenn die durchzuführenden Prüfungen in der Auswerteeinheit 02 in parallelen Routinen und damit praktisch gleichzeitig durchgeführt werden. Das Ergebnis einer Prüfung kann zum Auslösen eines Stellbefehls genutzt werden, um eine in einem aktuell aufgenommenen und geprüften Bild festgestellte Abweichung von einem für die Prüfung maßgeblichen Referenzwert zu korrigieren. Daher kann die Auswerteeinheit 02 mit mindestens einem Ausgang ausgestattet sein, von dem aus über eine Datenübertragungsstrecke 28 der Stellbefehl an einen den Druckprozess beeinflussenden Stellantrieb 29 in der Druckmaschine 06 geleitet wird. Ein derartiger Stellantrieb 29 ist z. B. in Verbindung mit einem zum Druckwerk gehörenden Farbwerk oder Feuchtwerk, einem Umfangsregister, einem Seitenregister oder einer Diagonalverstellung für mindestens einen der Formzylinder gegenüber dem ihm zugeordneten Übertragungszylinder 21 vorgesehen. Der Ausgang der Auswerteeinheit 02 kann auch dazu genutzt werden, eine Beleuchtungsvorrichtung (nicht dargestellt) für den Bildsensor 03, z. B. eine Blitzlichtlampe zu aktivieren, auszulösen oder abzuschalten.It is advantageous if the tests to be carried out in the evaluation unit 02 in parallel routines and thus performed virtually simultaneously. The result of a test may be used to trigger a control command to correct a deviation found in a currently recorded and tested image from a reference value relevant to the test. Therefore, the evaluation unit 02 can be equipped with at least one output, from which the positioning command is transmitted via a data transmission path 28 to an actuating drive 29 influencing the printing process in the printing machine 06. Such actuator 29 is z. B. in conjunction with a belonging to the printing unit inking unit or dampening unit, a circumferential register, a page register or a diagonal adjustment for at least one of the forme cylinder relative to its associated transfer cylinder 21 is provided. The output of the evaluation unit 02 can also be used to a lighting device (not shown) for the image sensor 03, z. B. to activate a flash lamp to trigger or turn off.

Die Anzeigevorrichtung 01 weist eine grafikfähige Anzeigefläche 08 mit mehreren von der Auswerteeinheit 02 unterschiedlich ansteuerbaren, fensterähnlichen Bereichen 09; 11; 12; 13; 14 auf, wobei ein erster Bereich 09 wahlweise ein aktuell aufgenommenes Bild, ein zuvor aufgenommenes Bild oder ein Referenzbild anzeigt und ein zweiter Bereich 11 mindestens ein Eingabefeld 16; 17 und/oder ein Bedienfeld 18; 19 zur Einstellung und/oder Bedienung der Auswerteeinheit 02 und/oder zur Einstellung und/oder Bedienung der Druckmaschine 06 aufweist. Mittels des Eingabefeldes 16; 17 und/oder des Bedienfeldes 18; 19 ist das System hinsichtlich mindestens eines Parameters einstellbar, eine vom System ausgeübte Funktion aufrufbar und/oder auslösbar und/oder ein von der Auswerteeinheit 02 abzusetzender Stellbefehl in das System eingebbar oder aus einer Menge von vorgesehenen Stellbefehlen auswählbar.The display device 01 has a graphics-capable display surface 08 with a plurality of differently controllable by the evaluation unit 02, window-like areas 09; 11; 12; 13; 14, wherein a first area 09 optionally displays a currently recorded image, a previously recorded image or a reference image and a second area 11 at least one input field 16; 17 and / or a control panel 18; 19 for setting and / or operation of the evaluation unit 02 and / or for setting and / or operation of the printing machine 06 has. By means of the input field 16; 17 and / or the control panel 18; 19, the system can be set with regard to at least one parameter, a function exerted by the system can be called up and / or triggered and / or a positioning command to be issued by the evaluation unit 02 can be input into the system or selected from a set of provided positioning commands.

Die Anzeigefläche 08, die z. B. Bestandteil eines zur Druckmaschine 06 gehörenden Leitstands ist, erhält durch ihre Strukturierung in unabhängig voneinander betreibbare, d. h. von der Auswerteeinheit 02 mit unterschiedlichem Informationsgehalt gleichzeitig ansteuerbare Bereiche 09; 11; 12; 13; 14 eine übersichtliche und komfortabel nutzbare Bedienoberfläche, auf der zumindest zur Inspektion eines Druckbildes 04 relevante Informationen dargestellt werden, wobei auf derselben Anzeigefläche 08 zumindest in einem der Bereiche 09; 11; 12; 13; 14 gleichzeitig mindestens ein Bedienelement vorgesehen ist, um auf die aktuell angezeigten Informationen durch mindestens eine Anweisung an das System zu reagieren, wobei die Anweisung den von der Druckmaschine 06 ausgeführten Prozess dahingehend beeinflußt, einer festgestellten Abweichung von zumindest einem Referenzwert entgegen zu wirken. Es ist vorteilhaft, zur Darstellung von Informationen auf der Anzeigefläche 08 Farbe, insbesondere unterschiedliche Farben für unterschiedliche Informationen zu verwenden.The display area 08, the z. B. part of a belonging to the printing machine 06 control center, obtained by structuring in independently operable, d. H. from the evaluation unit 02 with different information content simultaneously controllable areas 09; 11; 12; 13; 14 a clear and easy-to-use user interface on which at least for the inspection of a printed image 04 relevant information is displayed, wherein on the same display surface 08 at least in one of the areas 09; 11; 12; 13; At least one operating element is provided at the same time to respond to the currently displayed information by at least one instruction to the system, wherein the instruction affects the executed by the printing machine 06 process to counteract a detected deviation from at least one reference value. It is advantageous to use color to represent information on the display surface 08, in particular different colors for different information.

Ein Druckbild 04, dessen ausgewertetes Bild erkennen lässt, dass es eine zulässige Toleranzgrenze bezüglich seiner zu beurteilenden Qualität überschreitet, kann mittels einer mit dem System in Verbindung stehenden Markiervorrichtung (nicht dargestellt) gekennzeichnet und/oder durch eine Fördereinrichtung (nicht dargestellt) ausgeschleust werden, wobei das System derart eingestellt werden kann, dass die Auswerteeinheit 02 bei Feststellung der Überschreitung einer zulässigen Toleranzgrenze die Kennzeichnung des Druckbildes 04 durch die Markiervorrichtung und/oder die Ausschleusung durch die Fördereinrichtung selbsttätig auslöst, indem die Auswerteeinheit 02 z. B. an ihrem Ausgang einen entsprechenden Stellbefehl absetzt. Die Bedingungen zur Auslösung dieses Stellbefehls sind vorzugsweise an der Anzeigefläche 08 auswählbar und einstellbar.A printed image 04 whose evaluated image indicates that it exceeds a permissible tolerance limit with regard to its quality to be assessed can be identified by means of a marking device (not shown) connected to the system and / or discharged by a conveyor (not shown), wherein the system can be set such that the evaluation unit 02 automatically triggers the marking of the printed image 04 by the marking device and / or the discharge by the conveyor upon detection of exceeding an allowable tolerance limit by the evaluation unit 02 z. B. at its output sends a corresponding control command. The conditions for triggering this control command are preferably selectable and adjustable on the display surface 08.

Vorzugsweise ist auf der Anzeigefläche 08 ein dritter Bereich 12 vorgesehen, wobei der dritte Bereich 12 zumindest eine Benennung der Auswerteeinheit 02 und/oder eines aktuell in der Druckmaschine 06 bearbeiteten Auftrags anzeigt. Auch kann in diesem dritten Bereich 12 z. B. angezeigt werden, ob der aktuelle Auftrag eine Änderung in seinen für den Druckprozeß relevanten Parametern erfahren hat.Preferably, a third area 12 is provided on the display surface 08, the third area 12 indicating at least one designation of the evaluation unit 02 and / or of a job currently being processed in the printing machine 06. Also, in this third area 12 z. Example, whether the current job has undergone a change in its parameters relevant to the printing process.

Die Anzeigefläche 08 kann auch einen vierten Bereich 13 aufweisen, wobei der vierte Bereich 13 mindestens ein Menü mit einer bei seiner Auswahl sich öffnenden Menüstruktur mit mindestens einer Funktion zur Bedienung und/oder Einstellung der Auswerteeinheit 02 und/oder zur Bedienung und/oder Einstellung der Druckmaschine 06 aufweist. Die im vierten Bereich 13 der Anzeigefläche 08 aus einem Menü auswählbare Funktion betrifft somit z. B. ein Einrichten eines neuen mit der Druckmaschine 06 zu bearbeitenden Auftrags oder ein Bearbeiten oder Ändern eines bestehenden Auftrags, wobei der zweite Bereich 11 der Anzeigefläche 08 in Abhängigkeit von der im Menü getroffenen Auswahl eine feste Reihenfolge von Eingabefeldern 16; 17 und/oder Bedienfeldern 18; 19 zur Einstellung und/oder Bedienung der Auswerteeinheit 02 und/oder zur Einstellung und/oder Bedienung der Druckmaschine 06 vorgibt. Auf diese Weise wird ein Benutzer bezüglich einer im System und/oder der Druckmaschine 06 einzustellenden Funktionalität geführt, indem alle für die gewünschte Funktionalität erforderlichen Einstellungen konsequent nacheinander abgefragt werden, wobei eine nachfolgende Abfrage eine Beantwortung der vorangegangenen Abfrage voraussetzt.The display area 08 can also have a fourth area 13, the fourth area 13 having at least one menu with a menu structure which opens at its selection with at least one function for operating and / or setting the evaluation unit 02 and / or for operating and / or setting the Printing machine 06 has. The selectable in the fourth area 13 of the display area 08 from a menu function thus relates to z. B. setting up a new job to be processed by the printing press 06 or editing or changing an existing job, the second area 11 of the display area 08 depending on the selection made in the menu, a fixed sequence of input fields 16; 17 and / or control panels 18; 19 for setting and / or operation of the evaluation unit 02 and / or for setting and / or operation of the printing press 06 pretends. In this way, a user is guided with respect to a functionality to be set in the system and / or the printing press 06, in that all settings required for the desired functionality are queried consistently one after the other, with a subsequent query requiring a response to the previous query.

Ebenso ist ein im Speicher 26 gespeichertes Bild z. B. mittels des im vierten Bereich 13 der Anzeigefläche 08 anzeigbaren Menü auswählbar und im ersten Bereich 09 der Anzeigefläche 08 zur Anzeige bringbar.Likewise, an image stored in the memory 26 z. B. selectable by means of the displayable in the fourth region 13 of the display area 08 menu and in the first area 09 of the display surface 08 can be brought to the display.

Eine weitere im vierten Bereich 13 im Menü auswählbare Funktion kann z. B. darin bestehen, eine oder mehrere zulässige Toleranzgrenzen zur Beurteilung der Qualität der von der Druckmaschine 06 erzeugten Druckbilder 04 festzulegen oder das System durch ein geordnetes Abschalten seiner Funktionen außer Betrieb zu setzen, wobei letzteres vorzugsweise nur im Stillstand der Druckmaschine 06 ausführbar ist und dessen Vollzug vom System durch eine entsprechende Meldung angezeigt wird. Es ist vorteilhaft, für ein zu beurteilendes Qualitätsmerkmal, bei dem eine zulässige Toleranzgrenze festzulegen ist, in der Auswerteeinheit 02 eine Menge unterschiedlicher Empfindlichkeitsstufen zu hinterlegen, z. B. zwischen fünf und zwanzig Empfindlichkeitsstufen, vorzugsweise zehn Empfindlichkeitsstufen, wobei eine geeignete Empfindlichkeitsstufe mittels des im vierten Bereich 13 angezeigten Menüs und/oder der Eingabefelder 16; 17 und/oder der Bedienfelder 18; 19 im zweiten Bereich 11 auswählbar und für das System einstellbar ist.Another in the fourth area 13 in the menu selectable function can, for. Example, consist of one or more allowable tolerance limits for the assessment determine the quality of the printed images 04 generated by the printing machine 06 or to put the system out of operation by an orderly shutdown of its functions, the latter is preferably executable only at standstill of the printing press 06 and its completion is displayed by the system by an appropriate message. It is advantageous for a quality characteristic to be assessed, in which an allowable tolerance limit is to be defined, to deposit a number of different sensitivity levels in the evaluation unit 02, for example, B. between five and twenty sensitivity levels, preferably ten sensitivity levels, with a suitable sensitivity level by means of the menus displayed in the fourth area 13 and / or the input fields 16; 17 and / or the control panels 18; 19 in the second area 11 selectable and is adjustable for the system.

Überdies kann auf der Anzeigefläche 08 ein fünfter Bereich 14 vorgesehen sein, wobei der fünfte Bereich 14 zumindest einen Status der Auswerteeinheit 02 und/oder der Druckmaschine 06 anzeigt. Statusanzeigen in diesem fünften Bereich 14 können z. B. in Form eines Piktogramms erfolgen.In addition, a fifth region 14 can be provided on the display surface 08, the fifth region 14 indicating at least one status of the evaluation unit 02 and / or the printing press 06. Status displays in this fifth area 14 may, for. B. in the form of a pictogram.

Es ist von Vorteil, wenn die Anzeigefläche 08 den ersten Bereich 09 und den zweiten Bereich 11 nebeneinander angeordnet und mindestens zwei der fünf Bereiche 09; 11; 12; 13; 14, vorzugsweise alle fünf Bereiche 09; 11; 12; 13; 14, gleichzeitig anzeigt. Dabei kann die Anzeigefläche 08 den dritten Bereich 12 an ihrem oberen Rand, den vierten Bereich 13 unterhalb des dritten Bereichs 12, den fünften Bereich 14 an ihrem unteren Rand und den ersten Bereich 09 und den zweiten Bereich 11 zwischen dem vierten Bereich 13 und dem fünften Bereich 14 anzeigen. Der dritte, vierte und fünfte Bereich 12; 13; 14 sind vorzugsweise jeweils zeilenförmig ausgebildet, wobei die Anzeigefläche 08 zumindest den vierten Bereich 13 und den fünften Bereich 14 dauerhaft anzeigt.It is advantageous if the display surface 08 the first area 09 and the second area 11 arranged side by side and at least two of the five areas 09; 11; 12; 13; 14, preferably all five areas 09; 11; 12; 13; 14, at the same time. In this case, the display surface 08, the third region 12 at its upper edge, the fourth region 13 below the third region 12, the fifth region 14 at its lower edge and the first region 09 and the second region 11 between the fourth region 13 and the fifth Show area 14. The third, fourth and fifth regions 12; 13; 14 are preferably each formed in a line shape, wherein the display surface 08 displays at least the fourth region 13 and the fifth region 14 permanently.

Erfindungsgemäß ist zumindest der erste Bereich 09 der Anzeigefläche 08 videofähig ausgebildet und in der Lage, eine Sequenz von mehreren in rascher Folge aufeinanderfolgenden Bildern anzuzeigen. Der erste Bereich 09 der Anzeigefläche 08 ist somit in der Lage, mit dem Bildsensor 03 aufeinanderfolgend aufgenommene Bilder von auf dem Druckträger 07 aufgedruckten Druckbildern 04 oder zumindest von Teilen der auf dem Druckträger 07 aufgedruckten Druckbilder 04 derart in einer Sequenz aufeinanderfolgend anzuzeigen, wie die vollständig oder zumindest teilweise vom mit Bezug auf die Druckmaschine ortsfesten Bildsensor 03 aufgenommenen Druckbilder 04 aufgrund der Transportgeschwindigkeit des Druckträgers 07 den Bildaufnahmebereich 23 des Bildsensors 03 passieren. Eine Bildwiedergabefrequenz des ersten Bereichs 09 der Anzeigefläche 08 ist demnach mindestens so groß wie eine Bildaufnahmefrequenz des Bildsensors 03. Entsprechend der Transportgeschwindigkeit des Druckträgers 07 können so z. B. fünf oder mehr Druckbilder 04 pro Sekunde im ersten Bereichs 09 der Anzeigefläche 08 angezeigt werden. Diese filmartige Anzeige der Druckbilder 04 hat den Vorteil, dass z. B. Farbabweichungen ihrer Tendenz nach schnell erkennbar werden, auch wenn bei einer Anzeigegeschwindigkeit von mehreren Bildern pro Sekunde das einzelne Druckbild 04 für Bedienpersonal der Druckmaschine nicht mehr diskret inspizierbar ist. Durch die Anzeige einer Sequenz von Druckbildern 04 wird auch visualisiert, in welchen Bereichen der aufeinanderfolgend gedruckten Druckbilder 04 derartige Farbabweichungen auftreten, sodass das Farbwerk in seinem Farbauftrag zonal nachgeführt werden kann. Eine derart initiierte Verstellung von Zonenschrauben des Farbwerks wird dann wiederum nach kurzer Zeit für das Bedienpersonal der Druckmaschine im im ersten Bereich 09 der Anzeigefläche 08 ablaufenden Film der Druckbilder 04 durch eine Umkehr in der Tendenz der Farbabweichung erkennbar. Für die Videofähigkeit ist insbesondere die elektronische Ansteuerung der Anzeigefläche 08 derart auszubilden, dass Videosignale verarbeitet und zur Anzeige gebracht werden können. Dazu muß die Ansteuerung z. B. eine ausreichend große Signalbandbreite mit einer hohen Geschwindigkeit verarbeiten können.According to the invention, at least the first area 09 of the display area 08 is video-capable and capable of displaying a sequence of several successive pictures in quick succession. The first area 09 of the display surface 08 is thus capable of sequentially displaying images of print images 04 printed on the print substrate 07 or at least of parts of the printed images 04 printed on the print substrate 07 with the image sensor 03 sequentially in a sequence such as that completely or at least partially by the image sensor 03 fixed with respect to the printing press stationary image images 04 due to the transport speed of the print carrier 07, the image pickup area 23 of the image sensor 03 pass. An image playback frequency of the first region 09 of the display surface 08 is therefore at least as large as an image recording frequency of the image sensor 03. According to the transport speed of the print carrier 07 can be such. B. five or more printed images 04 per second in the first area 09 of the display surface 08 are displayed. This film-like display of the printed images 04 has the advantage that z. B. color deviations of their tendency to be quickly recognizable, even if at a display speed of several frames per second, the single print image 04 is no longer discretely inspectable for operators of the printing press. The display of a sequence of printed images 04 also visualizes in which areas of the successively printed printed images 04 such color deviations occur, so that the inking unit can be tracked zonally in its inking. Such an initiated adjustment of zone screws of the inking unit will then turn after a short time for the operating personnel of the printing press in the first area 09 of the display surface 08 running film of the printed images 04 recognizable by a reversal in the tendency of color deviation. For the video capability in particular the electronic control of the display surface 08 is to be designed such that video signals can be processed and displayed. For this purpose, the control must z. B. can process a sufficiently large signal bandwidth at a high speed.

Die Anzeigefläche 08 weist mindestens ein berührungsempfindliches Feld zur Bedienung und/oder Einstellung der Auswerteeinheit 02 und/oder der Druckmaschine 06 auf, wobei insbesondere im zweiten Bereich 11 das Eingabefeld 16; 17 und/oder das Bedienfeld 18; 19 zur Einstellung und/oder Bedienung der Auswerteeinheit 02 und/oder zur Einstellung und/oder Bedienung der Druckmaschine 06 als ein berührungsempfindliches Feld ausgebildet sind. Die Anzeigefläche 08 ist damit vorzugsweise als ein Touch-Screen ausgebildet.The display surface 08 has at least one touch-sensitive field for operation and / or adjustment of the evaluation unit 02 and / or the printing press 06, wherein in particular in the second region 11, the input field 16; 17 and / or the control panel 18; 19 are configured for setting and / or operation of the evaluation unit 02 and / or for setting and / or operation of the printing press 06 as a touch-sensitive field. The display surface 08 is thus preferably designed as a touch screen.

Die Anzeigevorrichtung 01 und/oder die Auswerteeinheit 02 weisen in ihrer bevorzugten Ausführung mindestens zwei Betriebsarten auf, wobei sich die Betriebsarten in einer unterschiedlichen Gestaltung der Anzeigefläche 08 und/oder im Umfang, d. h. insbesondere in der Anzahl der auf der Anzeigefläche 08 dargestellten Anzeigen und/oder im Umfang der Bedienung und/oder Einstellung der Auswerteeinheit 02 und/oder der Druckmaschine 06 unterscheiden. Ein Wechsel von einer aktuell eingestellten Betriebsart in eine Betriebsart größeren Umfangs bezüglich der Anzeigen und/oder der Bedienung und/oder der Einstellung der Auswerteeinheit 02 und/oder der Druckmaschine 06 hängt vorzugsweise vom Nachweis einer Berechtigung ab, wobei dieser Nachweis z. B. in einem Passwort oder in einem Identifikationsmerkmal des Benutzers besteht und dem System durch eine Eingabe zur Prüfung mitzuteilen ist. Auch die Reihenfolge der auf der Anzeigefläche 08 angezeigten Eingabefelder 16; 17 und/oder Bedienfelder 18; 19 kann von der aktuell eingestellten Betriebsart abhängen, weil z. B. in einer bestimmten Betriebsart nicht freigegebene Eingabefelder 16; 17 und/oder Bedienfelder 18; 19 in dieser Betriebsart vorzugsweise erst gar nicht angezeigt oder verriegelt werden, sodass die mit den Eingabefeldern 16; 17 und/oder Bedienfeldern 18; 19 sonst verbundene Funktion nicht ausführbar ist. Die Betriebsarten unterscheiden sich z. B. darin, dass in einer Betriebsart nur zur Ausführung eines Druckauftrags erforderliche Funktionen angezeigt werden, wohingegen in einer anderen Betriebsart z. B. sämtliche Einstellungen des Systems bis hin zu den Einstellungen des Bildsensors 03 und denjenigen der Druckmaschine 06 änderbar sind.In its preferred embodiment, the display device 01 and / or the evaluation unit 02 have at least two operating modes, the operating modes being in a different design of the display surface 08 and / or in the scope, ie in particular in the number of displays shown on the display surface 08 and / or or in the scope of the operation and / or adjustment of the evaluation unit 02 and / or the printing machine 06 differ. A change from a currently set operating mode to a larger operating range with respect to the displays and / or the operation and / or the setting of the evaluation unit 02 and / or the printing press 06 preferably depends on the proof of an authorization, this proof z. B. in a password or in an identification feature of the user and the system is to be notified by an input for review. Also, the order of the displayed on the display surface 08 input fields 16; 17 and / or panels 18; 19 may depend on the currently set mode because z. B. in a certain mode not enabled input fields 16; 17 and / or panels 18; 19 preferably not even displayed or locked in this mode, so that with the input fields 16; 17 and / or control panels 18; 19 otherwise connected function is not executable. The Operating modes differ z. Example is that in one mode only necessary to execute a print job functions are displayed, whereas in another mode z. B. all settings of the system up to the settings of the image sensor 03 and those of the printing press 06 are changeable.

Es ist von Vorteil, wenn das System, insbesondere die Anzeigefläche 08, eine Funktion aufweist, um eine unbeabsichtigt oder irrtümlich vorgenommene Eingabe an einem Eingabefeld 16; 17 und/oder Bedienfeld 18; 19 und/oder eine irrtümliche Auswahl aus dem im vierten Bereich 13 der Anzeigefläche 08 angezeigten Menü zurückzunehmen oder zu löschen. Auch im Speicher 26 gespeicherte Daten, die nicht mehr benötigt werden, sind ganz oder teilweise z. B. durch die Betätigung eines bestimmten Bedienfeldes 18; 19 löschbar.It is advantageous if the system, in particular the display surface 08, has a function to prevent an unintentional or erroneous input on an input field 16; 17 and / or control panel 18; 19 and / or to cancel or delete an erroneous selection from the menu displayed in the fourth area 13 of the display area 08. Also stored in the memory 26 data that are no longer needed are completely or partially z. B. by the operation of a specific control panel 18; 19 erasable.

Die Anzeigefläche 08 kann insbesondere in ihrem fünften Bereich 14 z. B. anzeigen, wie viele Druckbilder 04 insgesamt und/oder wie viele als gut beurteilte Druckbilder 04 von der Druckmaschine 06 bei einem aktuellen Auftrag bereits produziert wurden. Eine z. B. mit dem im vierten Bereich 13 der Anzeigefläche 08 anzeigbaren Menü aufrufbare Statistikfunktion kann Informationen über ein einzelnes Bild und/oder über mehrere Bilder zur Anzeige bringen. Diese Informationen können im Speicher 26 vorzugsweise zeitlich begrenzt gespeichert und/oder aufgrund einer dem System eingebbaren Anweisung an einen mit der Auswerteeinheit 02 verbundenen Drucker (nicht dargestellt) leitbar und dort ausdruckbar sein.The display surface 08 can in particular in its fifth region 14 z. For example, indicate how many printed images 04 have been produced in total and / or how many well-rated images 04 of the printing machine 06 at a current order already. A z. B. with the displayable in the fourth area 13 of the display area 08 menu callable statistics function can bring information about a single image and / or multiple images for display. This information may preferably be stored in the memory 26 for a limited time and / or be able to be printed and printed there on the basis of a command that can be input to the system to a printer (not shown) connected to the evaluation unit 02.

Zur Ausführung der beschriebenen Funktionalität, insbesondere der Funktionalität in Verbindung mit der Anzeigefläche 08, weist die Auswerteeinheit 02 vorteilhafterweise ein Betriebssystem auf, welches eine Methode zur Interprozesskommunikation unterstützt, die dazu ausgebildet ist, komplexe Datenstrukturen auszutauschen. Zum Beispiel kann als Betriebssystem Windows NT4.0© (oder höher) oder Windows 2000 ©(oder höher) vorgesehen sein und die Kommunikation gemäß dem COM (Common Object Model) / DCOM (Distributed Component Object Model) - Standard erfolgen.For carrying out the described functionality, in particular the functionality in connection with the display surface 08, the evaluation unit 02 advantageously has an operating system which supports a method for inter-process communication, which is designed to exchange complex data structures. For example, the operating system may be Windows NT4.0 © (or higher) or Windows 2000 © (or higher), and communication may be in accordance with the COM (Common Object Model) / DCOM (Distributed Component Object Model) standard.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

0101
Anzeigevorrichtungdisplay device
0202
Auswerteeinheit, RechenanlageEvaluation unit, computer system
0303
Bildsensor, Farbkamera, Halbleiterkamera, Flächenkamera, ZeilenkameraImage sensor, color camera, semiconductor camera, area camera, line scan camera
0404
Druckbildprint image
0505
--
0606
Druckmaschinepress
0707
Druckträger, Druckbogen, Materialbahn, PapierbahnPrint carrier, printing sheet, material web, paper web
0808
Anzeigefläche (01)Display area (01)
0909
Bereich, ersterArea, first
1010
--
1111
Bereich, zweiterArea, second
1212
Bereich, dritterArea, third
1313
Bereich, vierterArea, fourth
1414
Bereich, fünfterArea, fifth
1515
--
1616
Eingabefeldinput box
1717
Eingabefeldinput box
1818
BedienfeldControl panel
1919
BedienfeldControl panel
2020
--
2121
Übertragungszylindertransfer cylinder
2222
GegendruckzylinderImpression cylinder
2323
Bildaufnahmebereich (03)Image pickup area (03)
2424
Datenübertragungsstrecke, DatenleitungData transmission link, data line
2525
--
2626
SpeicherStorage
2727
Datenübertragungsstrecke, DatenleitungData transmission link, data line
2828
DatenübertragungsstreckeData transmission link
2929
Stellantrieb (06)Actuator (06)
3030
--
3131
Datenübertragungsstrecke, DatenleitungData transmission link, data line
3232
--
3333
optische Einrichtung, Objektivoptical device, lens
AA
Achse(21)Axis (21)
BB
Breite (07)Width (07)
PP
Produktionsrichtung (21)Production direction (21)
TT
Transportrichtung (07)Transport direction (07)
UU
Umfang (21)Circumference (21)

Claims (3)

  1. System for inspecting a printed image (04), the system having at least one evaluation unit (02), a display apparatus (01) and an image sensor (03), the image sensor (03) recording an image which at least partly maps the printed image (04), the mapped printed image (04) belonging to a sequence of printed images (04) which is produced by a printing press (06) on a print substrate (07), the evaluation unit (02) receiving data correlating with the recorded image and evaluating at least one previously recorded image or one reference image in comparison with stored data, the display apparatus (01) having a graphics-capable display area (08) with a plurality of regions (09; 11; 12; 13; 14) which can be differently actuated by the evaluation unit (02), a first region (09) alternatively displaying a currently recorded image, one of the previously recorded images or the reference image, the display apparatus (01) displays, on its display area (08), a second region (11) having at least one input field (16; 17) and/or an operating field (18; 19) for setting and/or operating the evaluation unit (02) and/or for setting and/or operating the printing press (06), the evaluation unit (02) having a quantity of different sensitivity levels for a quality feature of the printed image (04) to be assessed, for which a permissible tolerance limit is to be determined, it being possible to set a suitable sensitivity level by means of the input field (16, 17) and/or of the operating field (18; 19) in the second region (11), the display area (08) continuously displays currently recorded images in its first region (09) and the display stops as soon as a currently recorded image exceeds at least one previously set permissible tolerance limit with respect to its quality to be assessed.
  2. System according to Claim 1, characterized in that the display area (08) continues the display of currently recorded images in its first region (09) after expiry of a certain duration.
  3. System according to Claim 2, characterized in that the duration is adjustable.
EP04730545.3A 2003-05-02 2004-04-30 System for inspecting a printed image Expired - Lifetime EP1620265B2 (en)

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DE10319771A DE10319771B4 (en) 2003-05-02 2003-05-02 System for inspecting a printed image
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EP (2) EP2011651B1 (en)
JP (1) JP2006525145A (en)
CN (1) CN100395107C (en)
AT (1) ATE427217T1 (en)
DE (3) DE10319771B4 (en)
ES (1) ES2321616T3 (en)
WO (1) WO2004096547A2 (en)

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EP1620265A2 (en) 2006-02-01
DE10319771A1 (en) 2004-11-25
JP2006525145A (en) 2006-11-09
CN100395107C (en) 2008-06-18
US7664294B2 (en) 2010-02-16
ATE427217T1 (en) 2009-04-15
EP1620265B1 (en) 2009-04-01
DE502004009772D1 (en) 2009-08-27
US20060230358A1 (en) 2006-10-12
DE502004009270D1 (en) 2009-05-14
EP2011651B1 (en) 2009-07-15
CN1784308A (en) 2006-06-07
WO2004096547A2 (en) 2004-11-11
EP2011651A1 (en) 2009-01-07
ES2321616T3 (en) 2009-06-09
DE10319771B4 (en) 2005-03-17
WO2004096547A3 (en) 2004-12-23

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