EP1862309B1 - Dispositif de détection - Google Patents

Dispositif de détection Download PDF

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Publication number
EP1862309B1
EP1862309B1 EP20070109333 EP07109333A EP1862309B1 EP 1862309 B1 EP1862309 B1 EP 1862309B1 EP 20070109333 EP20070109333 EP 20070109333 EP 07109333 A EP07109333 A EP 07109333A EP 1862309 B1 EP1862309 B1 EP 1862309B1
Authority
EP
European Patent Office
Prior art keywords
sensor device
strip
sections
sensor
printed surface
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 - Fee Related
Application number
EP20070109333
Other languages
German (de)
English (en)
Other versions
EP1862309A2 (fr
EP1862309A3 (fr
Inventor
Annette Fuchs
Thomas Fuchs
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1862309A2 publication Critical patent/EP1862309A2/fr
Publication of EP1862309A3 publication Critical patent/EP1862309A3/fr
Application granted granted Critical
Publication of EP1862309B1 publication Critical patent/EP1862309B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

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

Definitions

  • a parallelization of the measurements with several cameras distributed across the substrate width would also be possible to increase the resolution.
  • a method for the synchronized operation of a plurality of electronic cameras in which the individual cameras simultaneously record one image in response to a trigger signal and the image data of the individual cameras are combined to form an overall image. After completing the image acquisition, a first number of image lines are first read from each camera and discarded. Subsequently, a second predetermined number of image lines are read in succession in a predetermined order of the cameras from each camera, and processed into an overall image. Finally, after reading the second number of picture lines independently of the other cameras, the remaining image lines are read out and the read-out image data discarded.
  • a disadvantage of this solution is the cost of the large number of cameras, the cost of synchronizing the cameras and the low image data processing speed due to the complex data handling.
  • the invention is therefore based on the object, the effort for a sensor device with strip-shaped detection range, which is suitable for a spectral density measurement or color control based on print control strips to reduce.
  • a sensor device by the combination of a low-cost RGB or SW area camera having a matrix sensor, with an arrangement of mirrors or prisms, wherein successive by the optical means in the direction of the main extent of the strip-shaped printing surface to be controlled Area sections (in the case of print control strips, this is generally the width of the substrate) are adjacent to each other and can be projected line by line onto the matrix sensor.
  • the invention has the advantages that the native resolution of the sensor matrix is fully utilized by the optical splitting of the printing surface strip into strip sections and at the same time the disadvantage of CCD matrix sensors, which consists in that the matrix sensor can not be addressed line by line, but the entire sensor matrix is read out serially must be overcome.
  • a surface camera 3 is arranged laterally on a printing material web in a rotary printing press, wherein the printing material 2 roll or curved can be.
  • the printed material 2 transported in the direction of the arrow has conventional print control strips 1.K, which extend as a strip-shaped printing surface 1 in printed image edge regions transversely to the transport direction and are applied for color control or print quality control.
  • prisms for beam deflection can also be used on the matrix sensor 4.
  • Each mirror 5.S is assigned a section 6.1... 6.5 of the print control strip 1.K whose image is reflected by the mirror 5.S in the direction of the area camera 3.
  • the mirrors 5.S are aligned in such a way that the images of the juxtaposed sections 6.1... 6.5 of the print control strip 1.K can be projected among one another on line groups 7.1... 7.5 of the matrix sensor 4 (FIG. Fig. 2 ).
  • a lighting device 9 is arranged on the printing substrate, which is synchronized with the surface camera 3 and the adjacent sections 6.1 ... 6.5 of the pressure control strip 1.K pulsed linearly illuminated.
  • a linear lighting can be realized, for example, with cylindrical lenses.
  • the illumination device 9 has a short flash time and can be formed from light sources with different monochromatic light spectra, for example red, blue and green LED groups. By flashing with different illumination spectra, it is possible to use the area camera 3 as a spectral, Tristimulusfarb- or density sensor.
  • the light sources are expediently controllable in sections in their flash intensity to different emission characteristics of the light sources and the different projection distances (object widths) between the sections 6.1 ... 6.5 of the print control strips 1.K and the area camera 3 and the associated different light intensities of the matrix sensor. 4 to compensate for projected images.
  • the illumination device 9 is advantageously arranged at a vertical angle of 0 or 45 ° to the mirrors 5.S to minimize reflections.
  • the area camera 3 is advantageously slightly oblique to the surface of the printing material 2, in order to achieve a flat as possible arrangement and the projection of a rectangular strip on the matrix sensor 4.
  • the mirrors 5.S are preferably equipped with different radii of curvature to compensate for different magnifications depending on the object's width.
  • special lenses can be used for the area camera 3, in which the beam path does not open, but runs parallel.
  • the same magnification always applies and the mirrors 5.S can be made simpler.
  • the proposed sensor device is not limited to the image analysis of print control strips 1.K, but also for all other image acquisition functions of strip-shaped printing surfaces 1 with a dominant direction of extension can be used transversely or longitudinally to the transport direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Studio Devices (AREA)

Claims (8)

  1. Dispositif capteur pour la détection optique de surfaces imprimées (1) en forme de bandes sur des supports d'impression (2) se déplaçant le long d'une voie de transport, constitué par une caméra de surface (3) associée à la voie de transport et comprenant un capteur matriciel (4), les surfaces imprimées (1) en forme de bande comportant une direction d'extension dominante située transversalement ou longitudinalement par rapport à la direction de transport,
    caractérisé en ce que
    des moyens optiques positionnés en amont de la caméra de surface (3) permettent de projeter des tronçons (6.1,...6.5) de la surface imprimée (1) préalablement situés côte à côte sur le capteur matriciel (4), de sorte qu'ils soient situés les uns au dessous des autres et au voisinage les uns des autres.
  2. Dispositif de capteur conforme à la revendication 1,
    caractérisé en ce que
    les moyens optiques:
    - sont répartis à des distances régulières sur la largueur du support d'impression le long de l'axe optique (8) de la caméra de surface (3), et sont respectivement associés à un tronçon (6.1...6.5) de la surface imprimée (1),
    - sont décalés les uns par rapport aux autres par rapport à l'axe optique (8) de la caméra de surface (3), et
    - projettent des images des tronçons respectivement associés (6.1...6.5) de la surface imprimée (1) sur des groupes de lignes voisins (7.1...7.5) du capteur matriciel (4), l'ordre des tronçons (6.1...6.5) correspondant à l'ordre des groupes de lignes (7.1...7.5).
  3. Dispositif capteur conforme à la revendication 1 ou 2,
    caractérisé en ce que
    la surface imprimée (1) en forme de bande est une bande de contrôle d'impression (1K) s'étendant transversalement à la direction de transport.
  4. Dispositif capteur conforme à la revendication 1 ou 2,
    caractérisé en ce que
    les moyens optiques comportent des miroirs (5S) ou des prismes.
  5. Dispositif capteur conforme à la revendication 4,
    caractérisé en ce que
    les miroirs (5S) sont formés de façon à compenser un grossissement des tronçons (6.1...6.5) dépendant de l'éloignement de l'objet.
  6. Dispositif capteur conforme à l'une des revendications précédentes,
    caractérisé en ce que
    un dispositif d'éclairage (9) éclaire la surface imprimée (1) en forme par impulsions linéaires.
  7. Dispositif capteur conforme à la revendication 6,
    caractérisé en ce que
    le dispositif d'éclairage (9) est conçu pour l'émission de différents spectres d'éclairage.
  8. Dispositif capteur conforme à la revendication 6 ou 7,
    caractérisé en ce que
    l'intensité d'éclairage du dispositif d'éclairage (9) compense différents éloignements d'objets des tronçons (6.1...6.5).
EP20070109333 2006-05-31 2007-05-31 Dispositif de détection Expired - Fee Related EP1862309B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610025324 DE102006025324A1 (de) 2006-05-31 2006-05-31 Sensoreinrichtung

Publications (3)

Publication Number Publication Date
EP1862309A2 EP1862309A2 (fr) 2007-12-05
EP1862309A3 EP1862309A3 (fr) 2008-05-28
EP1862309B1 true EP1862309B1 (fr) 2012-09-12

Family

ID=38582290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070109333 Expired - Fee Related EP1862309B1 (fr) 2006-05-31 2007-05-31 Dispositif de détection

Country Status (3)

Country Link
EP (1) EP1862309B1 (fr)
JP (1) JP2007327953A (fr)
DE (1) DE102006025324A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008020505A1 (de) 2008-04-23 2009-10-29 Zind, Oliver, Dipl.-Ing. Bildaufnahem- und Farbmesssystem
US20210187503A1 (en) * 2019-12-19 2021-06-24 Personal Genomics Taiwan, Inc. Apparatus and system for single-molecule nucleic acids detection

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT390684B (de) * 1985-10-14 1990-06-11 Oesterr Nationalbank Verfahren und vorrichtung zum erkennen von druckbildfehlern an prueflingen, insbesondere an banknoten
DE4136461C2 (de) * 1991-11-06 1999-04-08 Roland Man Druckmasch Vorrichtung und Verfahren zur großflächigen Bildinspektion
DE4321177A1 (de) * 1993-06-25 1995-01-05 Heidelberger Druckmasch Ag Vorrichtung zur parallelen Bildinspektion und Farbregelung an einem Druckprodukt
DE19850335B4 (de) * 1998-11-02 2008-06-05 Metso Paper Automation Oy Vorrichtung zum Erfassen von Eigenschaften einer in Längsrichtung transportierten Warenbahn
EP1445099A1 (fr) * 2003-02-10 2004-08-11 Kba-Giori S.A. Capteur
DE102004033495A1 (de) * 2004-01-25 2005-08-11 Man Roland Druckmaschinen Ag Verfahren zum synchronisierten Betrieb einer Vielzahl elektronischer Kameras

Also Published As

Publication number Publication date
EP1862309A2 (fr) 2007-12-05
EP1862309A3 (fr) 2008-05-28
DE102006025324A1 (de) 2007-12-13
JP2007327953A (ja) 2007-12-20

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