EP2119565A3 - Method for controlling typographic processes - Google Patents

Method for controlling typographic processes Download PDF

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Publication number
EP2119565A3
EP2119565A3 EP09160021.3A EP09160021A EP2119565A3 EP 2119565 A3 EP2119565 A3 EP 2119565A3 EP 09160021 A EP09160021 A EP 09160021A EP 2119565 A3 EP2119565 A3 EP 2119565A3
Authority
EP
European Patent Office
Prior art keywords
print image
printed
sensor
printing
color separation
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.)
Withdrawn
Application number
EP09160021.3A
Other languages
German (de)
French (fr)
Other versions
EP2119565A2 (en
Inventor
Alfons Schuster
Andreas Metzner
Josef Wirth
Michael Schönert
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.)
Grapho Metronic Mess und Regeltechnik GmbH and Co KG
Original Assignee
Grapho Metronic Mess und Regeltechnik GmbH and Co KG
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 Grapho Metronic Mess und Regeltechnik GmbH and Co KG filed Critical Grapho Metronic Mess und Regeltechnik GmbH and Co KG
Publication of EP2119565A2 publication Critical patent/EP2119565A2/en
Publication of EP2119565A3 publication Critical patent/EP2119565A3/en
Withdrawn legal-status Critical Current

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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
    • B41F33/0027—Devices for scanning originals, printing formes or the like for determining or presetting the ink supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0081—Devices for scanning register marks

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zur Regelung von drucktechnischen Prozessen, insbesondere zur Schnittregister- oder Farbregister- oder Farbdichteregelung, wobei zur Ermittlung mindestes eines Istwerts unmittelbar ein auf einem Bedruckstoff gedrucktes Druckbild mit Hilfe mindestens eines Sensors in mindestens einem Druckbildbereich vermessen wird, wobei der oder jeder gemessene Istwert mit jeweils einem druckvorstufebasierten Sollwert verglichen wird, und wobei auf Basis einer aus dem oder jedem Istwert und dem jeweiligen Sollwert ermittelten Regelabweichung ein Stellsignal für den zu regelnden drucktechnischen Prozess ermittelt wird. Das erfindungsgemäße Verfahren umfasst folgende Schritte: a) für jedes auf die Bedruckstoffbahn zu druckende Druckbild werden aus der Druckvorstufe Farbseparationsdaten bereitgestellt, wobei die Farbseparationsdaten jedes Druckbilds unter Berücksichtigung von Daten über die Charakteristik des Sensors, mit Hilfe dessen das Druckbild vermessen werden kann, zu einem Farbseparationsdaten-Composit kombiniert werden; b) anschließend werden im Farbseparationsdaten-Composit jedes Druckbilds solche Druckbildbereiche rechnerisch ermittelt, die zur Regelung des drucktechnischen Prozesses geeignete Information enthalten, wobei die für jedes Druckbild ermittelten Druckbildbereiche bewertet werden; c) darauffolgend werden die für jedes Druckbild ermittelten, druckplattenbezogenen Druckbildbereiche zusammen mit dem Farbseparationsdaten-Composit in eine Sollwertdatei geschrieben; d) weiterhin werden die ermittelten, druckplattenbezogenen Druckbildbereiche abhängig von einer Druckplattenzylinderbelegung von Formzylindern in zylinderbezogene bzw. bedruckstoffbahnbezogene Druckbildbereiche umgerechnet werden, wobei aus denselben zur Regelung ein Druckbildbereich ausgewählt wird, der von einem Sensor vermessen werden kann; e) abhängig von dem zur Regelung ausgewählten Druckbildbereich wird einerseits der Sensor quer zur Bedruckstoffbahn ausgerichtet und anderseits der Sensor so angesteuert, dass der Sensor zur Regelung Istwerte des ausgewählten Druckbildbereichs bereitstellt, wobei ein entsprechender Sollwert des ausgewählten Druckbildbereichs aus der Sollwertdatei ausgelesen werden.

Figure imgaf001
The invention relates to a method for controlling printing processes, in particular for Schnittregister- or Farbregister- or color density control, wherein for determining at least one actual value directly printed on a substrate print image using at least one sensor in at least one print image area is measured, the or each measured actual value is compared in each case with a pre-pressure-based setpoint value, and based on a control deviation determined from the or each actual value and the respective setpoint, an actuating signal for the pressure-technical process to be controlled is determined. The method according to the invention comprises the following steps: a) for each print image to be printed on the printing substrate, color separation data are provided from the prepress stage, the color separation data of each print image being taken into account, taking into account data on the characteristic of the sensor by means of which the print image can be measured Color separation data composite can be combined; b) subsequently, in the color separation data composite of each printed image, such printed image regions are computationally determined which contain suitable information for the regulation of the printing technology process, the printed image regions determined for each printed image being evaluated; c) subsequently, the printing plate-related printed image areas determined for each printed image are written together with the color separation data composite into a setpoint file; d) furthermore, the ascertained, printing-plate-related printed image areas are converted into cylinder-related or printed-web-related printed image areas as a function of a printing plate cylinder assignment, a print image area being selected from the same for regulation, which can be measured by a sensor; e) depending on the print image area selected for the control, the sensor is aligned transversely to the printing material web and the sensor is controlled such that the sensor provides actual values of the selected print image area for control purposes, with a corresponding desired value of the selected print image area being read from the setpoint file.
Figure imgaf001
EP09160021.3A 2008-05-16 2009-05-12 Method for controlling typographic processes Withdrawn EP2119565A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008023961A DE102008023961A1 (en) 2008-05-16 2008-05-16 Method for controlling printing processes

Publications (2)

Publication Number Publication Date
EP2119565A2 EP2119565A2 (en) 2009-11-18
EP2119565A3 true EP2119565A3 (en) 2018-03-07

Family

ID=40886563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09160021.3A Withdrawn EP2119565A3 (en) 2008-05-16 2009-05-12 Method for controlling typographic processes

Country Status (2)

Country Link
EP (1) EP2119565A3 (en)
DE (1) DE102008023961A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2395182B1 (en) 2011-08-12 2013-11-28 Comexi Group Industries, Sau METHOD FOR CONTROLLING THE OPERATION OF A PRINTER MACHINE AND FLEXOGRAPHIC PRINTER MACHINE FOR IMPLEMENTATION.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19602103A1 (en) * 1996-01-22 1997-07-24 Heidelberger Druckmasch Ag Determining measuring points for scanning printing format for colouring of printer
EP1300243A2 (en) * 2001-10-04 2003-04-09 Maschinenfabrik Wifag Method and means for determining the position of a printed web

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127831B1 (en) * 1983-06-02 1990-03-14 Web Printing Controls Co. Closed loop register control
DE4237004C2 (en) 1992-11-02 1996-07-04 Mohndruck Reinhard Mohn Ohg Process for online measurement of the coloring of printed products
DE102004028056A1 (en) * 2004-04-22 2005-11-17 Maschinenfabrik Wifag Device and method for detecting register errors
DE102005041179A1 (en) * 2005-08-31 2007-03-01 Man Roland Druckmaschinen Ag Typographic process e.g. color registering, regulating method for printing machine, involves determining pre-press based target value from pre-press data and under consideration of data about characteristic of sensor
DE102006022529B4 (en) * 2006-05-15 2009-05-20 Koenig & Bauer Aktiengesellschaft Web-fed rotary press with at least one inking unit and with an in-line inspection system
DE102007012736A1 (en) * 2007-03-16 2008-09-18 Man Roland Druckmaschinen Ag Method for controlling printing processes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19602103A1 (en) * 1996-01-22 1997-07-24 Heidelberger Druckmasch Ag Determining measuring points for scanning printing format for colouring of printer
EP1300243A2 (en) * 2001-10-04 2003-04-09 Maschinenfabrik Wifag Method and means for determining the position of a printed web

Also Published As

Publication number Publication date
DE102008023961A1 (en) 2009-11-19
EP2119565A2 (en) 2009-11-18

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