EP2119565A2 - Procédé destiné à la régulation de processus d'impression - Google Patents

Procédé destiné à la régulation de processus d'impression Download PDF

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Publication number
EP2119565A2
EP2119565A2 EP09160021A EP09160021A EP2119565A2 EP 2119565 A2 EP2119565 A2 EP 2119565A2 EP 09160021 A EP09160021 A EP 09160021A EP 09160021 A EP09160021 A EP 09160021A EP 2119565 A2 EP2119565 A2 EP 2119565A2
Authority
EP
European Patent Office
Prior art keywords
print image
printing
sensor
printed
control
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Withdrawn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
EP09160021A
Other languages
German (de)
English (en)
Other versions
EP2119565A3 (fr
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
Manroland 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 Manroland AG filed Critical Manroland AG
Publication of EP2119565A2 publication Critical patent/EP2119565A2/fr
Publication of EP2119565A3 publication Critical patent/EP2119565A3/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a method for the regulation of printing processes according to the preamble of claim 1.
  • the DE 42 37 004 C2 discloses a non-marking control method for controlling the color density of a printed product, wherein for this purpose the printed image of the printed product is measured directly by means of sensors. Actual values determined here are compared with reference values which are based on image data or prepress data.
  • the DE 101 49 158 A1 discloses a likewise without a brand-working method for cutting register control on a printing machine, wherein also in this method for the control pressure pre-stage-based setpoints are used.
  • the present invention has the object to provide a novel method for the regulation of printing processes.
  • 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
  • the inventive method allows a markless control of printing processes with high control accuracy while handling small amounts of data.
  • suitable image areas of the printed product can be easily determined and handled.
  • the present invention relates to a method for markless control of printing processes, in particular a method for markless cutting register control.
  • the method according to the invention can also be used for markless color register control as well as markless color density control.
  • the method according to the invention will be described below with reference to the signal flow diagram of FIG Fig. 1 described in detail.
  • color separation data are provided for each print image to be printed on a printing material web from the prepress stage. These color separation data are preferably coarse grid data in CIP3 format. Then, for color printed images of autotypic compression, color separation data for cyan, magenta, yellow, and black in the form of CIP3 coarse grid data is provided for each print image.
  • a step 11 of the method according to the invention data about the characteristic of the sensor are provided by means of which the printed image of the printing material web can be measured.
  • This data about the characteristic of the sensor can be a grayscale resolution or color-step resolution and / or a spectral sensitivity thereof.
  • the geometric resolution thereof as well as the measuring speed thereof can be provided.
  • a step 12 of the method according to the invention the color separation data provided in step 10 for each print image are combined to form a color separation data composite taking into account the data about the characteristic of the sensor provided in step 11. Accordingly, a color separation data composite dependent on the characteristic of the sensor is generated for each printed image to be printed on the printing substrate web.
  • the CIP3 coarse grid data is cropped. The trimming of this coarse grid data is carried out such that the width and height of the color separation data composites generated from the coarse grid data correspond to the print format of the respective print image. This ensures that z. B. such parts of printing plates that disappear in the printing plate channel of a plate cylinder, not included in the Farbseparations stylist composite.
  • the color separation data composites determined in step 12 are preferably stored in a file in TIFF format.
  • such printed image areas are computationally determined for each printed image in the generated color separation data composites, which contain suitable information for the regulation of the printing process, on the basis of which therefore the control of the printing process can be performed. Then, if a plurality of print image areas suitable for control are determined in a print image, the determined print image areas are evaluated with respect to their suitability so as to provide a ranking of the determined print image areas.
  • the computational determination of the print image areas of the print images suitable for controlling the printing process can take place at different times, namely either when control data of a printed product to be produced is loaded in the control station or when color separation data composites arrive.
  • the size of the printed image areas of the printed images computationally determined to regulate the printing technology process in step 13 depends on the characteristic of the sensor used. So z. As the pixel size of a sensor designed as a camera and the number of desired camera pixels per print image area influence on the size of the computationally determined print image areas that contain suitable information to control the printing process.
  • a step 14 the print image areas determined for each print image and related to printing plates are written together with the corresponding color separation data composite into a setpoint file, this setpoint file being generated in TIFF format. Accordingly, there is a setpoint file for each printed image which comprises on the one hand a color separation data composite for the printed image and on the other hand for regulating the printing process suitable print image areas of the print image, both the Farbseparations stylist composite and suitable for the control of the printing process process print image areas of the characteristic of the sensor are dependent.
  • the setpoint file also stores the ranking of the print image areas.
  • step 15 the printing plate-related printed image areas of the printed images determined in step 13 are converted into cylinder-related or printed-web-related printed image areas as a function of a printing plate cylinder assignment of the printing cylinders of the printing press.
  • Such a positively evaluated printed image area is selected for the regulation, which can basically be measured by the sensor on account of its position on the printing material.
  • the cylinder-related or printing material-related printed image areas are converted into strand-related print image areas depending on the longitudinal section of the printing material web to be executed and depending on the strand guidance of the strands of the printing material web produced by the longitudinal section. From these strand-related printed image areas, such a positively evaluated printed image area is then selected for the regulation, which, taking into account the longitudinal section of the printing material web and taking into account the strand guidance, can in principle be measured by a sensor.
  • step 17 The setpoint data files generated in step 14 and the print image areas selected in step 15 and / or step 16 for control are then provided to a controller in step 17, wherein the controller aligns the sensor transversely to the printing material web, namely the sensor, depending on the range of printing material selected for control along a traverse transversely to the printing substrate travels to a position relative to the printing substrate, in the area of which the selected for the control print image area can be detected by the camera. Furthermore, in step 17, the sensor is actuated depending on the print image area selected for the control such that the sensor metrologically detects and provides actual values of the selected print image area.
  • Corresponding setpoint values are read out of the setpoint file provided in step 14 and compared with the metrologically recorded actual values, wherein a control signal for the pressure-technical process to be controlled is generated on the basis of a control deviation between the actual value and the setpoint value.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Facsimile Image Signal Circuits (AREA)
EP09160021.3A 2008-05-16 2009-05-12 Procédé destiné à la régulation de processus d'impression Withdrawn EP2119565A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008023961A DE102008023961A1 (de) 2008-05-16 2008-05-16 Verfahren zur Regelung von drucktechnischen Prozessen

Publications (2)

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

Family

ID=40886563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09160021.3A Withdrawn EP2119565A3 (fr) 2008-05-16 2009-05-12 Procédé destiné à la régulation de processus d'impression

Country Status (2)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2395182A1 (es) * 2011-08-12 2013-02-08 Comexi Group Industries, Sau Método para controlar la operación de una máquina impresora y máquina impresora flexográfica para su implementación.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237004C2 (de) 1992-11-02 1996-07-04 Mohndruck Reinhard Mohn Ohg Verfahren zur Online-Messung der Einfärbung von Druckprodukten
DE10149158A1 (de) 2001-10-04 2003-04-24 Wifag Maschf Verfahren und Vorrichtung zur Ermittlung der Position einer bedruckten Papierbahn

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127831B1 (fr) * 1983-06-02 1990-03-14 Web Printing Controls Co. Dispositif de repérage à boucle fermée
DE19602103B4 (de) * 1996-01-22 2006-05-04 Heidelberger Druckmaschinen Ag Verfahren zum Bestimmen von Meßorten für eine Abtastung eines mehrfarbigen Druckbildes zum Steuern oder Regeln einer Farbgebung einer Druckmaschine
DE102004028056A1 (de) * 2004-04-22 2005-11-17 Maschinenfabrik Wifag Vorrichtung und Verfahren zur Erkennung von Registerfehlern
DE102005041179A1 (de) * 2005-08-31 2007-03-01 Man Roland Druckmaschinen Ag Verfahren zur Regelung von drucktechnischen Prozessen
DE102006022529B4 (de) * 2006-05-15 2009-05-20 Koenig & Bauer Aktiengesellschaft Rollenrotationsdruckmaschine mit mindestens einem Farbwerk und mit einem Inline-Inspektionssystem
DE102007012736A1 (de) * 2007-03-16 2008-09-18 Man Roland Druckmaschinen Ag Verfahren zur Regelung von drucktechnischen Prozessen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237004C2 (de) 1992-11-02 1996-07-04 Mohndruck Reinhard Mohn Ohg Verfahren zur Online-Messung der Einfärbung von Druckprodukten
DE10149158A1 (de) 2001-10-04 2003-04-24 Wifag Maschf Verfahren und Vorrichtung zur Ermittlung der Position einer bedruckten Papierbahn

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2395182A1 (es) * 2011-08-12 2013-02-08 Comexi Group Industries, Sau Método para controlar la operación de una máquina impresora y máquina impresora flexográfica para su implementación.
WO2013024185A1 (fr) * 2011-08-12 2013-02-21 Comexi Group Industries, Sau Procédé de commande du fonctionnement d''une machine d'impression flexographique et machine d'impression flexographique de mise en œuvre dudit procédé
EP2743084A4 (fr) * 2011-08-12 2015-09-02 Comexi Group Industries Sau Procédé de commande du fonctionnement d''une machine d'impression flexographique et machine d'impression flexographique de mise en uvre dudit procédé
US9855738B2 (en) 2011-08-12 2018-01-02 Comexi Group Industries, S.A.U. Method for controlling the operation of a printing press and a flexographic printing press for implementing said method

Also Published As

Publication number Publication date
EP2119565A3 (fr) 2018-03-07
DE102008023961A1 (de) 2009-11-19

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