EP1593508B1 - Capteur du registre - Google Patents

Capteur du registre Download PDF

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Publication number
EP1593508B1
EP1593508B1 EP05102757A EP05102757A EP1593508B1 EP 1593508 B1 EP1593508 B1 EP 1593508B1 EP 05102757 A EP05102757 A EP 05102757A EP 05102757 A EP05102757 A EP 05102757A EP 1593508 B1 EP1593508 B1 EP 1593508B1
Authority
EP
European Patent Office
Prior art keywords
register
printing
sensor
register sensor
edges
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.)
Active
Application number
EP05102757A
Other languages
German (de)
English (en)
Other versions
EP1593508A3 (fr
EP1593508A2 (fr
Inventor
Wolfgang Geissler
Christopher Riegel
Frank Schumann
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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Filing date
Publication date
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Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1593508A2 publication Critical patent/EP1593508A2/fr
Publication of EP1593508A3 publication Critical patent/EP1593508A3/fr
Application granted granted Critical
Publication of EP1593508B1 publication Critical patent/EP1593508B1/fr
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F33/00Indicating, counting, warning, control or safety devices
    • B41F33/0081Devices for scanning register marks

Definitions

  • the present invention relates to a device in a substrate-processing machine with a register sensor for register measurement between at least two superimposed printed on a substrate color separations of a printed image, the register sensor detects the deviation between two superimposed color separations on the substrate optically and forwards to a computer.
  • every printing press with at least two printing units offers the possibility of minimizing these register deviations by means of correction.
  • the changed register settings can be manually entered by an operator of the printing press in the control of the same or it is an automatic control device, an automatic register adjustment, installed, which recognizes register deviations by means of a sensor and transmits them to the control of the printing press, so that the controller the press makes appropriate adjustments to the settings to minimize register deviation.
  • Such a device is from the DE 101 32 266 A1 known.
  • the publication DE 100 30 572 A1 shows a registration system for a web-processing machine with a sensor system for detecting registration marks.
  • the registration control system has a control unit for controlling the transport of the web as a function of the detection of the registration marks by the sensor system.
  • the sensor system has at least one camera and an illumination system for illuminating the field of view of the camera.
  • the camera is a CCD camera.
  • the patent JP 58-190703 shows a register mark sensor for a printing press.
  • a photosensitive surface for detecting register marks is divided into four areas by means of a horizontal and an oblique line, with the horizontal line and the oblique line intersecting at the center of the circularly shaped photosensitive surface.
  • the photosensitive surface is formed from four fiberglass elements, which are bundled.
  • the new two-quadrant photodiode shows an arrangement of two photosensitive elements onto which a field to be illuminated, which is present on the printing material, is imaged by means of an optical system.
  • a field is a register mark applied to the printing substrate.
  • the photosensitive elements convert the image of the illuminated field into electrical signals, which in a downstream electronics such.
  • B. a control computer of the printing press or a separate measuring electronics are converted into a measured variable, which is a measure of the size of the register deviation.
  • a control computer of the printing press or a separate measuring electronics are converted into a measured variable, which is a measure of the size of the register deviation.
  • a measure of the size of the register deviation Depending on how many measuring fields are present on relatively spaced color separations on the substrate, several measurement runs are necessary.
  • the largely rectangular evaluation surfaces of the two-quadrant photodiode are aligned obliquely with respect to edges of the conveyed printing material. Since the edges of the register marks on the substrate usually do not run parallel to the edges of the printing material, but are formed as oblique wedges, the detection of these oblique edges can be improved with an obliquely arranged photodiode. In order for lines aligned parallel to the edges of the printing material to be recognized worse, however, can be achieved by the improved detection of the oblique edges a total of a smoother signal. Thus, the photodiode can be aligned so that the signal is approximately the same for both oblique and parallel aligned edges of the register marks.
  • the register sensor is a four-quadrant photodiode whose measuring surfaces have at least partially oblique edges.
  • the photodiode four measuring fields, which are once divided vertically and once obliquely.
  • the evaluation electronics can thus be achieved an optimal detection of parallel as well as obliquely aligned register marks.
  • the register sensor is a CCD imager whose signals are evaluated by means of image processing electronics and fed to the computer.
  • imaging elements are used here, which deliver the signals to an image processing electronics.
  • the CCD image converter thus work as a video camera, which detects the parallel or obliquely oriented edges of the register marks, wherein the image captured by the camera in the image processing electronics is processed by appropriate algorithms so that the position of the parallel and oblique edges of the register marks the computer the printing material processing machine can be transmitted. Even so, reliable detection of register marks is possible.
  • the printing press 1 in Fig. 1 is a sheet-fed rotary printing machine with a feeder module 2 for conveying printed sheets 705 from a stack of sheets in the printing machine 1 and with a boom 3 at the other end of the printing machine 1, which stacks printed printed sheets 705.
  • a feeder module 2 for conveying printed sheets 705 from a stack of sheets in the printing machine 1 and with a boom 3 at the other end of the printing machine 1, which stacks printed printed sheets 705.
  • the inline measuring device does not necessarily have to be installed in the last printing unit 5.
  • the inline measuring device 6 is used primarily for the spectral measurement of the print control strip on the signatures 705 after passing through the printing press 1 in order to be able to carry out automatic color control.
  • Fig. 1 is a sheet-fed rotary printing machine with a feeder module 2 for conveying printed sheets 705 from a stack of sheets in the printing machine 1 and with a boom
  • register sensors 15 are mounted, wherein these register sensors 15 can in principle also be integrated in the measuring beam 6.
  • the register sensors 15 are mounted in the edge regions, so that they respectively detect the longitudinal edge region of the sheets 705 in the direction of sheet travel. If no inline measuring device 6 is present in the printing machine, the register sensors 15 are attached by means of a separate suspension in the printing unit 5 over the transport path of the printed sheets 705. It is important that the register sensors 15 are mounted so close to the sheet transport path that they can easily recognize the register marks on the print sheet 705 and on the other hand are not placed too close, so that the printed sheets 705 do not touch the register sensors 15 and thereby pollute or damage.
  • the sensors 15 are on the measuring beam 6 of Inline measuring device mounted and removable together with this, which in turn is installed in the vicinity of the printing nip 100 of the last printing unit 5.
  • This offers the advantage that the printed sheet 705 is always held by the printing gap 100, which is formed by a printing cylinder 8 and a counter-pressure cylinder 7, as well as by the sheet grippers 101 of the impression cylinder 7 during the measurement by the inline measuring bar 6 or the register sensors 15 and thus is stabilized for measurement.
  • the printing units 4, 5 of the printing machine 1 each have side walls 14, in which the printing cylinders 7, 8 are mounted.
  • each of the printing units 4, 5 an inking unit 13.
  • a computer 10 which transmits setting commands to the printing machine 1 and monitors the printing machine 1 by constantly transmitting measured values from the inline measuring device 6 and the register sensors 15 to the computer 10.
  • the register sensors 15 are involved in the control and regulation of the printing machine 1, so that occurring during the printing process register deviations between individual color separations on the print sheet 705 can be compensated by the computer 10.
  • FIG. 2 A first embodiment of the register sensors 15 is shown in FIG Fig. 2 to see which is constructed as a two-quadrant photodiode.
  • two register sensors 15 are mounted in the lateral areas of the printing unit 5, so that they can scan the edge areas of the print sheet 705 with the register marks.
  • the two quadrants of the photodiode of the register sensor 15 are rectangular in shape and aligned parallel to the front edge of the conveyed by the printing press 1 sheet 705.
  • the two surfaces of the register sensor 15 are connected so that the difference of the signals is supplied to the computer 10.
  • the photodiode is aligned obliquely to the front edge of the print sheet 705 in order to better recognize the oblique edges of register marks. Even if it then horizontal edges of the register marks are recognized worse, so leads the oblique arrangement according to Fig. 2a but to a more uniform signal, which improves the detection of the position of the register marks overall.
  • a further embodiment according to Fig. 3 combines the advantages of detecting straight and oblique edges of register marks.
  • the register sensor 15 has a four-quadrant photodiode which has a straight and an oblique subdivision.
  • the tapered register sensor surfaces 16 By means of the tapered register sensor surfaces 16, it is possible to recognize oblique edges outstanding, with the straight subdivision even straight edges can be very well recognized.
  • the signals 16.1 and 16.3 are summed in the computer 10 and the signals of the surfaces 16.2 and 16.4.
  • the signals 16.1 and 16.2 are summed and the signals 16.3 and 16.4.
  • the two signals resulting from the summing operations are then subtracted.
  • the computer 10 therefore has four inputs for the four fields of the four-quadrant photodiode of the register sensor 15.
  • the electronics for evaluation of the register sensor 15 may be located outside the computer 10 directly in the sensor 15 or the measuring beam 6, in which case the electronics two more Outputs for straight and oblique edges, the signals are passed to the computer 10.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Controlling Sheets Or Webs (AREA)

Claims (4)

  1. Dispositif dans une machine de traitement (1) d'un support imprimé muni d'un capteur à registre (15) pour mesurer un registre entre au moins deux séparations de couleur superposées sur un support imprimé (705) d'une image imprimée, le capteur à registre (15) détectant la différence entre deux séparations de couleur superposées sur le substrat imprimé (optique) et les transmettant à un ordinateur (10), caractérisé en ce que
    le capteur à registre (15) présente une photodiode (15) avec au moins deux quadrants et en ce que les surfaces d'analyse largement rectangulaires sont orientées de manière inclinée par rapport aux bords du support imprimé transporté (705).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que le capteur à registre (15) présente une photodiode à quatre quadrants dont les surfaces de mesure présentent au moins partiellement des bords inclinés.
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé en ce que le capteur à registre (15) est un convertisseur d'image CCD dont les signaux sont analysés au moyen d'une électronique de traitement d'image et transmis à l'ordinateur (10).
  4. Machine d'impression (1) comprenant un capteur à registre (15) selon l'une des revendications 1 à 3.
EP05102757A 2004-05-03 2005-04-07 Capteur du registre Active EP1593508B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004021597.9A DE102004021597B4 (de) 2004-05-03 2004-05-03 Registermarke
DE102004021597 2004-05-03

Publications (3)

Publication Number Publication Date
EP1593508A2 EP1593508A2 (fr) 2005-11-09
EP1593508A3 EP1593508A3 (fr) 2006-07-05
EP1593508B1 true EP1593508B1 (fr) 2012-08-29

Family

ID=34939182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05102757A Active EP1593508B1 (fr) 2004-05-03 2005-04-07 Capteur du registre

Country Status (5)

Country Link
US (2) US7637210B2 (fr)
EP (1) EP1593508B1 (fr)
JP (1) JP2005319801A (fr)
CN (1) CN100526072C (fr)
DE (1) DE102004021597B4 (fr)

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* Cited by examiner, † Cited by third party
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EP1834779A1 (fr) * 2006-03-14 2007-09-19 Kba-Giori S.A. Système d'inspection pour une machine d'impression de feuilles recto-verso
DE102007059842A1 (de) * 2007-12-12 2009-06-25 Manroland Ag Verfahren zur Regelung der Farbgebung in einer Offsetdruckmaschine
DE102009019591B4 (de) 2008-05-28 2022-11-17 Heidelberger Druckmaschinen Ag Messmarke zur leichten Ablesbarkeit von Registerfehlern beim Offsetdruck
DE102009035006B4 (de) * 2008-09-08 2019-06-06 Heidelberger Druckmaschinen Ag Intensitätsoptimierte Kontrollmarkenmessung
DE102008049908A1 (de) 2008-10-02 2010-04-08 Robert Bosch Gmbh Verfahren zur Erzeugung eines Detektionssignals und Erfassungseinrichtung
DE102009050047A1 (de) * 2008-11-13 2010-05-20 Heidelberger Druckmaschinen Ag Kompakte Registermarke
DE102009012436A1 (de) * 2009-03-11 2010-09-23 OCé PRINTING SYSTEMS GMBH Verfahren und Vorrichtung zum Überprüfen der auf ein Trägermaterial gedruckten Farbauszüge
DE102010036249A1 (de) * 2009-10-01 2011-04-07 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zur Ermittlung von Passerabweichungen mittels Rekursionsanalyse
DE102009046566B4 (de) * 2009-11-10 2017-06-01 Windmöller & Hölscher Kg Körper mit einem Registermarkenfeld
JP2011161662A (ja) * 2010-02-05 2011-08-25 Lintec Corp 印刷位置ずれ検出装置、印刷機、および、印刷位置ずれ検出方法
DE102012004238A1 (de) * 2011-03-24 2012-09-27 Heidelberger Druckmaschinen Aktiengesellschaft Druckverfahren und -system zur Ermittlung von Registerfehlern
DE202011050286U1 (de) * 2011-05-30 2012-09-06 Eltromat Gmbh Druckmaschine mit Registermarkensensor
CN102514407B (zh) * 2011-12-02 2014-09-10 杭州华丝夏莎纺织科技有限公司 平网印花机手工对花套色标志及方法
DE102012104584A1 (de) 2012-05-29 2013-12-05 Océ Printing Systems GmbH & Co. KG Verfahren zum Steuern eines Farbdruckers oder Farbkopierers
FI124325B (fi) * 2012-06-08 2014-06-30 Tecnomar Oy Laserprosessin kohdistuksen mittausmenetelmä
DE102014223579A1 (de) * 2014-11-19 2016-05-19 Heidelberger Druckmaschinen Ag Druckkontrollstreifen mit gesplitteten Marken
DE102016201509A1 (de) * 2015-03-02 2016-09-08 Heidelberger Druckmaschinen Ag Automatische Kontrastbestimmung
DE102016202118A1 (de) * 2015-03-19 2016-09-22 Heidelberger Druckmaschinen Ag Zusätzlicher Bogenkantensensor
DE102015216264A1 (de) * 2015-08-26 2017-03-02 Koenig & Bauer Ag Druckmessstreifen und Anwendungsverfahren dafür
CN110893725B (zh) * 2018-09-12 2021-08-17 海德堡印刷机械股份公司 具有圆形测量标记的对版-套准测量
DE102018216442A1 (de) 2018-09-26 2020-03-26 Heidelberger Druckmaschinen Ag Registermessung ohne Registermarken
CN110802960B (zh) * 2019-10-28 2021-05-14 西门子工厂自动化工程有限公司 机组式柔印机套印方法、装置、系统和计算机可读介质
DE102019129645A1 (de) 2019-11-04 2021-05-06 Koenig & Bauer Ag Bogenbearbeitungsmaschine mit zumindest einer Sensoreinrichtung
DE102020126350A1 (de) 2020-10-08 2022-04-14 Koenig & Bauer Ag Verfahren zur Registereinstellung einer Bogendruckmaschine
NL2027044B1 (en) * 2020-12-04 2022-07-06 Canon Production Printing Holding Bv Method and apparatus for improving calibration in a printer

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Also Published As

Publication number Publication date
JP2005319801A (ja) 2005-11-17
CN1693075A (zh) 2005-11-09
DE102004021597A1 (de) 2005-12-08
EP1593508A3 (fr) 2006-07-05
US7637210B2 (en) 2009-12-29
CN100526072C (zh) 2009-08-12
US20050249380A1 (en) 2005-11-10
US8161876B2 (en) 2012-04-24
EP1593508A2 (fr) 2005-11-09
DE102004021597B4 (de) 2017-04-13
US20100007690A1 (en) 2010-01-14

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