EP1998959B1 - Method for setting an inking unit of a printing press - Google Patents

Method for setting an inking unit of a printing press Download PDF

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Publication number
EP1998959B1
EP1998959B1 EP07726833A EP07726833A EP1998959B1 EP 1998959 B1 EP1998959 B1 EP 1998959B1 EP 07726833 A EP07726833 A EP 07726833A EP 07726833 A EP07726833 A EP 07726833A EP 1998959 B1 EP1998959 B1 EP 1998959B1
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EP
European Patent Office
Prior art keywords
printing press
determined
measuring device
printing
inking unit
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Active
Application number
EP07726833A
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German (de)
French (fr)
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EP1998959A1 (en
Inventor
Thomas TÜRKE
Harald Heinrich Willeke
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Koenig and Bauer AG
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Koenig and Bauer AG
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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
    • B41F33/0045—Devices for scanning or checking the printed matter for quality control for automatically regulating the ink supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • B41F31/045—Remote control of the duct keys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/10—Starting-up the machine
    • B41P2233/11—Pre-inking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/47—Automatic or remote control of metering blade position

Definitions

  • the invention relates to a method for adjusting an inking unit of a printing press according to claim 1.
  • GB 2 071 573 A a method for adjusting an inking unit of a printing machine is known, wherein inside and outside of the printing press in each case with a densitometer detected spectral data of a printed product compared with each other and the comparison values are used to track the inking unit.
  • WO 2005/108083 A1 is a method for determining color and / or density values for monitoring and / or regulating the printing process in a printing device known, especially in a sheetfed offset press, wherein measuring fields of a sheet during the printing process directly in or on the current printing device photoelectrically measured and from the thereby obtained measured values, the color and / or density values are formed for the respective measuring fields, whereby the measurement results directly in the printing process Measured value deviations compared to a measurement outside the printing process can be corrected by calculation.
  • a device for image inspection and color measurement on at least one printed product produced in a printing machine wherein the device consists of at least one image data from the printing product supplying image capture device and a computing device, wherein the computing device on the one hand determines all image data of the printed product for the purpose of image inspection and on the other hand from the Image data of at least one measuring point (pixels) of the printed product determines a measured variable for a color assessment.
  • DE 30 40 455 A1 is a device for color dosing in a printing machine, in particular an offset sheet-fed machine, with one or more, each an inking unit and a plurality of cylinders containing printing unit known, wherein at least one cylinder, which abuts the printed product with outwardly facing, at least partially printed area , a densitometric measuring device for measuring the color density of Farbtest Schemeen the printed product is arranged, wherein the densitometric measuring device is connected to a control device with setpoint specification and wherein a manipulated variable of the control device is fed to an actuator of the inking unit or the inking units.
  • a pressure without printing process is passed through the printing press, wherein the color density of the color test areas of the contact pressure measured by the densitometric measuring device is input as desired value into the control device.
  • DE 40 04 056 A1 is a method for color control and zonal presetting of ink dosing elements in inking machines of rotary printing machines, in particular offset rotary printing machines, wherein printed images produced by the printing machine are scanned, for example densitometrically or colorimetrically, and the values obtained therefrom using print carrier scanning logic with a self-learning system or with a so-called expert system can be fed to a Farb locartrechner, so that during a pressure and during a printing phase, the default values can be further specified on an ongoing basis.
  • the invention has for its object to provide a method for adjusting an inking unit of a printing machine, in which a to be produced by the printing press quality by an intervention, in particular control intervention on the inking unit of the printing press despite using different measuring methods in one Setting phase of the printing press and in their production without a computationally intensive transfer of the measured values of the measuring method used in the set-up phase can be set in the measuring method used in the continuous printing, in particular can be controlled.
  • the achievable with the present invention consist in particular in that a made in a Einrichtephase the press using a particular outside the printing machine arranged first measuring device setting a to be applied with at least one inking unit of the printing press on a substrate color application determines a print quality to be produced by the printing machine, said the so-defined print quality for establishing a target value for at least one inking unit z.
  • B. regulating control of a different from the first measuring device, in particular within the printing press arranged second measuring device is used, for.
  • An actual value corresponding to the print quality to be produced and recorded with the second measuring device is set in an early phase of the printing press, preferably at the beginning thereof, as the setpoint of the setting device, respectively control device, so that the further printing of the printing press subsequent to this setpoint setting is effected
  • Actual values recorded with the second measuring device do not require any special processing in the sense of transfer or transformation in order to be suitable for adjusting or regulating the inking unit, whereby the suitability of the measured values presupposes their direct comparability, as well as that recorded with the second measuring device in the continuous printing Actual values with the setpoint specified in the setting device or control device.
  • the first measuring device used in the set-up phase and the second measuring device used in the further printing can readily use completely different measuring methods , which corresponds to the reality in a printing company, and despite an incompatibility of the measured values of these respective measuring methods, these are nevertheless due to the proposed method suitable for ensuring a consistently high print quality.
  • the first measuring device z. B. use a densitometric measuring method
  • the inking unit of the printing machine associated with the second measuring device in connection adjusting device, respectively control device detects deviations in the images recorded by the second measuring device in particular by an image comparison and / / or determined, wherein determined in the image comparison deviations from each recorded as an actual value images of a specified as a set value image is interpreted as a change in the produced quality of printing and compensated in the sense of minimizing these deviations.
  • the first measuring device z. B. determined by a densitometric measurement method color density values of ink application on the substrate are due to the proposed method not first to convert image data to be used by the second measuring device used in the continuous printing.
  • a basic setting of the printing press takes place with the first measuring method used in the set-up phase.
  • the setpoint setting of the second measuring method which is active in the production run, then builds on an optimal setting of the printing press by the first measuring method, wherein no conversion of the measured values of the first measuring method into measured values processable by the second measuring method takes place.
  • Characteristic is thus in particular the origin of the specification for setting the target value in the second measuring method, wherein the first measuring method used in the set-up phase is used to form a reference for the second measuring method active in the continuous printing.
  • the proposed method thus results in terms of a fast-reacting color adjustment, preferably color control of a printing machine, wherein there is a high flexibility in the use of the measuring means.
  • the proposed method for color control of a printing press operates essentially sequentially from the following method steps:
  • a first actual value is first of all determined with respect to a color application set on at least one inking unit of the printing press and applied to a printing material by a first measuring device arranged outside the printing press.
  • the at least one inking unit on the printing material is set for a print quality to be produced by the printing press, which happens in particular if the determined first actual value indicates a need for correction with regard to the print quality to be produced by the printing press.
  • a presence of the need for correction can be made by the operator of the printing press or by a machine device z. B. by means of a comparison of the determined first actual value with z. B. from a prepress stage known data in terms of print quality to be produced.
  • a second second actual values are recorded with respect to the applied on the substrate ink application and a participating in a setting of the at least one inking unit of the printing machine adjustment or with a different from the first measuring device, in particular within the printing machine second measuring device supplied to a controller involved in a regulation of the at least one inking unit of the printing press.
  • At least one of the second actual values detected by the second measuring device corresponds to the setting of the ink application last made in the setup phase with respect to the print quality to be produced by the printing press on the printing substrate in which the at least one inking unit of FIG Printing machine adjusting adjustment or regulating control device set as their target value.
  • control device preferably regulates a deviation of other second actual values determined in the printing press from the set desired value by a new setting of the inking unit of the printing press which applies at least one ink application on the printing substrate in order to minimize this deviation detected by the control device.
  • the re-adjustment of the inking on the substrate applying inking is characterized in that as previously in the Einrichtephase the press with the first measuring device, a further first actual value is determined in terms of the inking of the press currently applied to the substrate color application, based on this further first actual value that the inking on the substrate applying inking is set with respect to the printing quality to be produced by the printing machine in the sense of minimizing the detected in the production of the printing machine of the setting, respectively control deviation and / or determined deviation.
  • the first actual value determined in the set-up phase of the printing machine with the first measuring device is z. B. detected by densitometry and / or colorimetry.
  • the detection of the second actual value, in particular within the printing machine in its printing takes place z. B. with a trained as a camera, preferably as a color camera second measuring device, wherein the camera z. B. a printed on the substrate print image or an imprinted measuring bar is detected.
  • the detected during the printing of the press second actual value is z. B. detected with a trained as an inline inspection system second measuring device.
  • the setup phase of the printing machine can z. B. also on several copies of the provided with the ink printing substrate of the first measuring device determined the first actual value and an average of these actual values are determined, based on this determined average of the inking is set on the substrate with respect to the print quality to be produced by the printing press.
  • second actual values each corresponding to the setting of the ink application on the printing material made in the set-up phase with regard to the printing quality to be produced by the printing press, can be detected, whereby second actual values from this set an average value is determined, in which case preferably this mean value is set in the setting device or regulating device as its desired value.
  • the setting of the ink application corresponding to the printing quality to be produced by the printing press on the printing substrate, first value determined in the set-up phase of the printing press with the first measuring device, is data-technically transferred to a central control station of the printing press and / or to the second measuring device and / or transmitted to the adjustment, respectively control device.
  • the setting device respectively control device detects the detected or determined deviation of the second actual value determined in the continuous printing of the printing press from the set desired value on a z. B. to the central control station of the printing press associated display device and / or reports with a message device.
  • the setting device or control device adjusts the recognized or determined deviation of the second actual value determined in the printing press from the setpoint value automatically or only after a manual release.
  • a further option is that the setting device or control device corrects the detected or determined deviation of the second actual value determined in the printing press from the set desired value only when reaching or exceeding a tolerance limit previously set for the degree of deviation.
  • Fig. 1 is as a printing machine exemplified a sheet-fed press
  • this sheet-fed press z. B. is designed as a five-color printing machine.
  • a sheet feeder 08 follow in this example in the direction of production five successively arranged printing units 01; 02; 03; 04; 06 and a paint tower 07 and a delivery extension 09, wherein stabilized in an ascending branch of a chain run the delivery extension 09 a chain guide to the boom 11 to be transported sheet 21 in its transport. Trained as a sheet 21 substrate 21 is stacked both in the sheet feeder 08 and in the boom 11.
  • a plurality of dryers 12 are preferably arranged, which are separated from at least one of the printing units 01; 02; 03; 04; 06 freshly printed sheets 21 during their transport in the delivery extension 09 z. B. by means of infrared radiation, hot air or UV radiation.
  • the sheet-fed printing press z. B. in an offset printing process, wherein in each printing unit 01; 02; 03; 04; 06 each a form cylinder 13 and a transfer cylinder 14 cooperate.
  • a plurality of rollers having inking unit 16 and preferably also a dampening unit 17 is arranged at each forme cylinder 13.
  • the inking unit 16 has in the axial direction of the forme cylinder 13 more, z. B. thirty and more juxtaposed ink zones with a width of z. B. 30 mm, with respect to the applied with the inking unit 16 on the substrate 21 layer thickness of the ink in each case with an actuating element, for.
  • a zone squeegee preferably by a belonging to a press central control station 27, z.
  • operable remote adjustment are adjustable.
  • a from the sheet feeder 08 via a feed drum 18 in the production direction first printing unit 01 fed sheet 21 is printed in the nip between the transfer cylinder 14 and a cooperating with this transfer cylinder 14 printing cylinder 19 and transferred by means of a transfer drum 25 to the subsequent printing direction in the production unit 02, where the Bow 21 is printed with another ink.
  • the printing machine can also have a turning drum (not shown) for carrying out a perfecting, ie a two-sided printing of the sheet 21, in which case in the printing machine in the production direction z.
  • the printing machine z. B one of the first printed in the printing machine sheet 21 preferably removed from the boom 11 and tested with a preferably outside the printing machine arranged first measuring device 22 with respect to the quality produced by the printing press. This sheet withdrawal is in the Fig. 1 indicated by a dashed line.
  • a single sheet 21 or a small number of sheets 21 preferably transported with a relation to the production rate applicable in production speed significantly reduced speed through the printing press.
  • the first measuring device 22 is z. B. as a densitometer, z. B. as a Handdensitometer, or as a color spectrometer or as a combination measuring instrument for a densitometric and colorimetric measurement is formed and z. B. on or spatially close to belonging to the printing press central control station 27 available.
  • the quality produced by the press is assessed in comparison with a target value for this measure.
  • the examination of the sheet 21 to be evaluated may relate to the printed image printed thereon or at least to a measuring beam associated with the print bar, wherein the measuring bar z. B. is arranged on the edge of the sheet 21 outside the printed image. If the actual value determined with the first measuring device 22 is further away from desired setpoint deviates, as it allows for this measure previously specified tolerance range, a setting on the inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 of the printing machine changed so that an actual value, which is determined on a printed after the change of the setting on the inking unit 16 sheet 21, better matches the predetermined value for this measurement setpoint than it was in the previous measurement.
  • FIG. 6 relates to an adjustment of the adjusting elements assigned to the respective inking zones with regard to the layer thickness of the printing ink provided there.
  • the first measuring device 22 their measured values z. B. via an electrical data connection to the central control station 27, wherein the central control station 27 z. B. by a computer of the prepress 28, the target value is provided with respect to the detected with the first measuring device 22 measured variable, so that the central control station 27, the required setpoint / actual value comparison z. B. can also run automatically.
  • the set-up phase of the printing machine is considered to be successfully completed, because with the current setting of the respective inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06, the desired quality for the print product to be produced with the printing product can be achieved, and the printing press can be released for the continuous printing, ie for the transport of the printing material 21 at full production speed.
  • the applicable for the first measuring device 22 setpoint can, for. B. by a pattern sheet or electronically provided by data from the computer of the prepress 28.
  • the measured values determined by the first measuring device 22 are referred to as first actual values.
  • a second measuring device 23 is provided, wherein the second measuring device 23 z. B. is designed as an in-line inspection system and z. B. has at least one camera system and at least one lighting unit.
  • the camera is z. B. formed as a color camera and z. B. configured as a line scan camera or as an area camera. It can be used as an image sensor z. B. have a CCD chip or a CMOS chip.
  • the lighting unit extends in the axial direction of the forme cylinder 13 preferably over its entire length.
  • the lighting unit has as a light source z.
  • light-emitting diodes or laser diodes preferably a plurality of mutually parallel rows of light-emitting diodes or laser diodes, wherein the light-emitting diodes or laser diodes selectively and either pulsed or operated in continuous light.
  • the second measuring device 23 receives at least one, preferably all of the printed in the continuous printing by the printing press sheet 21 at least one image, the second measuring device 23 detects in particular the printed on the sheet 21 printed image, wherein the second measuring device 23, the recorded image in preferably digital image data converts and z. B. an image processing system 24 supplies.
  • the detected by the second measuring device 23 measured values, eg. As correlated with the recorded image pressure electrical image data are referred to as second actual values.
  • the image taken by the second measuring device 23 is in the Fig. 1 indicated by a dashed arrow line.
  • At least one of the second actual values recorded by the second measuring device 23 at the beginning or in the early phase of the printing operation is recorded in an inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 adjusting adjustment 26, preferably one of the inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 regulating controller 26, set as their setpoint, wherein in a preferred embodiment, the control device 26 z. B. the respective color zones associated zone squeegee z. B. automatically adjusted by means of actuators, for example. In this way, the quality of the printed product produced by the printing press, which was found to be good in the set-up phase of the printing press, is taught into the setting device 26 or control device 26.
  • the early phase of the continuous printing thus forms for the adjusting device 26, respectively control device 26, a teach-in phase, in which the adjusting device 26, respectively control device 26, is configured for the further printing of the printing machine.
  • the configuration of the adjuster 26, respectively control device 26, and the at least one regulated by their inking unit 16 can be achieved by an automatic implementation of the teach-in phase or in conjunction with an actuation z. B. at the central control station 27.
  • all other printed products produced in the print run are evaluated on the basis of the target value specified in the training phase. If z.
  • the image processing system 24 detects a deviation of the second actual values detected by the second measuring device 23 from the setpoint defined in the teaching phase, specifically a deviation that exceeds a tolerance range previously set for the measured variable of the second measuring device 23 Preferably begins the inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 adjusting adjustment 26, respectively the inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 regulating controller 26 to change the setting for this at least one inking unit 16 such that the second actual values preferably continuously recorded by the second measuring device 23 in the production pressure are again brought closer to the setpoint specified for the corresponding measured variable.
  • a mathematical transfer of measured values of the first measuring device 22 in z. B. processed by the image processing system 24 image data is not.
  • the set by means of the first measuring device 22 quality of the printed matter to be produced with the printed product for setting the target value for the second measuring device 23 related adjustment 26, respectively control device 26, is used, with the setting made in the Einrichtephase of Inking unit 16 corresponding respective print image on the sheet 21 to the reference variable for the active in the production pressure adjustment 26, respectively control device 26 is.
  • the re-adjustment of the inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 can also be such that the setting 26, respectively control device 26 indicates the detected deviation of the determined in the printing of the press second actual values of the set target value and / or z.
  • z. B. short-term disturbances z. B. can occur after a refill of ink on an inking unit 16 or by a lack of fountain solution can be ignored.
  • a message device may indicate the correction suggestion displayed on the display device 32.
  • the setting device 26, or control device 26 only upon reaching or when exceeding a previously set for the degree of deviation tolerance limit on the detected deviation of the determined in the production of the printing press second Actual value of the set target value indicates and / or displays this detected deviation and / or reports and / or corrects.
  • the readjustment of the inking 16 applied to the substrate 21 inking done by the fact that, as before in the set-up of the printing press with the first measuring device 22, another first actual value with respect to the of the inking unit 16 of the printing press currently on the Substrate 21 applied color application is determined, based on this further first actual value of the ink application on the substrate 21-applying inking unit 16 with respect to the printing quality to be produced by the printing machine in terms of minimizing the in the printing press of the printing device 26, respectively control device 26 determined Deviation is set.
  • the adjusting means 26, respectively regulating device 26, is involved in setting the printing quality to be produced by the printing press, it only acts as a production observing device which preferably produces continuously and by detecting all Specimens of the printed product to be determined the deviation, which in the printing press of the set in the second measuring device 23 setpoint z. B. results by a particular persistent disturbance in the color transport and / or by a disturbance in the required balance of ink and fountain solution.
  • a determined, in particular a previously set tolerance limit exceeding deviation sets the adjuster 26, respectively control device 26 from a corresponding hint from which z. B. is displayed on the control unit 27 belonging to the display device 32.
  • the operator on the boom 11 of the printing machine can take a sheet 21, this again measured as before in the set-up of the printing press using the first measuring device 22 and the ink application on the sheet 21 applying inking unit 16 z.
  • the readjustment of the ink application 16 on the sheet 21 applying inking unit 16 on the basis of a 26 given by the setting 26, respectively control hint has the advantage that especially a gradually developing in the printing process deviation in the quality of the printed product to be produced by the printing press due to the measured values determined with the second measuring device 23 can be detected significantly earlier and more reliably, depending on the previously set tolerance limit than is possible solely on the basis of an observation of the production by the operating personnel, so that a correction of the setting of the ink application on the Sheet 21 applying inking 16 can be done and thus the production of waste paper is reduced.
  • the measured values of the first measuring device 22 z. Example be archived by the image processing system 24 or in another storage device, so that the first measuring device 22 does not necessarily re-execute their measuring method at each pressure, but that during execution of a similar order to the previous print order from the setting 26, respectively control device 26 on the archived measured values can be used.
  • Fig. 2 shows in a section of the in the Fig. 1 shown printing machine, an arrangement of the camera formed as a second measuring device 23, wherein the camera by a in the axial direction of the printing cylinder 19 extending preferably slot-shaped opening 29 z. B. in a tread 31 on one of the printing units 01; 02; 03; 04; 06 or on the coater tower 07 measured values of an along the printing cylinder 19 transported sheet 21 detected.
  • the camera has a detection angle ⁇ which opens along the axial direction of the printing cylinder 19.
  • the camera of the second measuring device 23 z. B. equipped with a wide-angle lens.
  • the pressure cylinder 19 has in its axial direction a length L in the range z. B.

Abstract

A method is used for adapting an inking unit of a printing press. During a setup phase for the printing press, at least a first actual value with regard to an ink application that is set at the inking unit and that is applied to the printed material, is determined by use of a first measuring device. The inking unit is initially set using this first actual value. During continuous printing of the printing press, a plurality of second actual values, with respect to a printed image formed on the printed materials, are determined using a second measuring device which is different from the first measuring device. These second values are fed to an ink adapting device for the inking unit. At least one of these several actual values, which corresponds to the setting mode in the setting phase, is set in the ink adjusting device as its setpoint value. The ink adjusting device detects deviations of the other second actual values for this setpoint value and adjusts the inking unit to minimize these deviations.

Description

Die Erfindung betrifft ein Verfahren zur Einstellung eines Farbwerks einer Druckmaschine gemäß dem Anspruch 1.The invention relates to a method for adjusting an inking unit of a printing press according to claim 1.

Durch die EP 0 142 470 A1 ist ein Verfahren zur Einstellung eines Farbwerks einer Druckmaschine bekannt, wobei Remissionsistwerte eines Druckbogens außerhalb der Druckmaschine mit einer Abtasteinrichtung, z. B. mit einem Plattenscanner, ermittelt werden, wobei Remissionssollwerte weiterer Druckbögen dieses Druckerzeugnisses in der laufenden Druckmaschine densitometrisch ausgemessen werden, wobei in einem Rechner die Remissionsistwerte und die Remissionssollwerte miteinander verglichen werden, wobei aus diesen Vergleichsresultaten Stellwerte für eine Einstellung des Farbwerks berechnet werden und damit die Farbführung geregelt wird.By the EP 0 142 470 A1 a method for adjusting an inking unit of a printing machine is known, wherein Remissionsistwerte a sheet outside the printing machine with a scanning device, for. With a plate scanner, remission setpoint values of further printed sheets of this printed product are measured densitometrically in the current printing machine, wherein the remission actual values and the remission setpoint values are compared with one another in a computer, wherein set values for setting the inking unit are calculated from these comparison results and thus the color guide is regulated.

Durch die GB 2 071 573 A ist ein Verfahren zur Einstellung eines Farbwerks einer Druckmaschine bekannt, wobei innerhalb und außerhalb der Druckmaschine jeweils mit einem Densitometer erfasste Spektraldaten eines Druckerzeugnisses miteinander verglichen und die Vergleichswerte zur Nachführung des Farbwerks verwendet werden.By the GB 2 071 573 A a method for adjusting an inking unit of a printing machine is known, wherein inside and outside of the printing press in each case with a densitometer detected spectral data of a printed product compared with each other and the comparison values are used to track the inking unit.

Durch die WO 2005/108083 A1 ist ein Verfahren zur Ermittlung von Farb- und/oder Dichtewerten für die Überwachung und/oder Regelung des Druckprozesses in einer Druckeinrichtung bekannt, speziell in einer Bogenoffsetdruckmaschine, wobei Messfelder eines Druckbogens während des Druckprozesses unmittelbar in oder an der laufenden Druckeinrichtung fotoelektrisch ausgemessen und aus den dabei gewonnenen Messwerten die Farb- und/oder Dichtewerte für die betreffenden Messfelder gebildet werden, wobei durch die Messung unmittelbar im Druckprozess bedingte Messwertabweichungen gegenüber einer Messung außerhalb des Druckprozesses rechnerisch korrigiert werden.By the WO 2005/108083 A1 is a method for determining color and / or density values for monitoring and / or regulating the printing process in a printing device known, especially in a sheetfed offset press, wherein measuring fields of a sheet during the printing process directly in or on the current printing device photoelectrically measured and from the thereby obtained measured values, the color and / or density values are formed for the respective measuring fields, whereby the measurement results directly in the printing process Measured value deviations compared to a measurement outside the printing process can be corrected by calculation.

Durch die DE 43 21 177 A1 ist eine Vorrichtung zur Bildinspektion und Farbmessung an mindestens einem in einer Druckmaschine erstellten Druckprodukt bekannt, wobei die Vorrichtung aus mindestens einer Bilddaten vom Druckprodukt liefernden Bilderfassungseinrichtung und aus einer Recheneinrichtung besteht, wobei die Recheneinrichtung einerseits alle Bilddaten des Druckproduktes zwecks einer Bildinspektion ermittelt und andererseits aus den Bilddaten zumindest eines Messpunktes (Pixel) des Druckproduktes eine Messgröße für eine Farbbeurteilung ermittelt.By the DE 43 21 177 A1 a device for image inspection and color measurement on at least one printed product produced in a printing machine is known, wherein the device consists of at least one image data from the printing product supplying image capture device and a computing device, wherein the computing device on the one hand determines all image data of the printed product for the purpose of image inspection and on the other hand from the Image data of at least one measuring point (pixels) of the printed product determines a measured variable for a color assessment.

Durch die DE 30 40 455 A1 ist eine Einrichtung zur Farbdosierung in einer Druckmaschine, insbesondere einer Offset-Bogenmaschine, mit einem oder mehreren, je ein Farbwerk und mehrere Zylinder enthaltenden Druckwerkeinheiten bekannt, wobei an mindestens einem Zylinder, an welchem das Druckprodukt mit nach außen weisender, mindestens teilweise bedruckter Fläche anliegt, eine densitometrische Messvorrichtung zur Messung der Farbdichte von Farbtestbereichen des Druckproduktes angeordnet ist, wobei an die densitometrische Messvorrichtung eine Regeleinrichtung mit Sollwertvorgabe angeschlossen ist und wobei eine Stellgröße der Regeleinrichtung einem Stellglied des Farbwerks bzw. der Farbwerke zugeführt ist. Vorzugsweise wird ein Andruck ohne Druckvorgang durch die Druckmaschine geführt, wobei die von der densitometrischen Messvorrichtung gemessene Farbdichte der Farbtestbereiche des Andrucks als Sollwert in die Regeleinrichtung eingegeben wird.By the DE 30 40 455 A1 is a device for color dosing in a printing machine, in particular an offset sheet-fed machine, with one or more, each an inking unit and a plurality of cylinders containing printing unit known, wherein at least one cylinder, which abuts the printed product with outwardly facing, at least partially printed area , a densitometric measuring device for measuring the color density of Farbtestbereichen the printed product is arranged, wherein the densitometric measuring device is connected to a control device with setpoint specification and wherein a manipulated variable of the control device is fed to an actuator of the inking unit or the inking units. Preferably, a pressure without printing process is passed through the printing press, wherein the color density of the color test areas of the contact pressure measured by the densitometric measuring device is input as desired value into the control device.

Durch die DE 38 12 099 A1 ist ein Verfahren zur Farbsteuerung einer Druckmaschine bekannt, wobei auf den von der Druckmaschine gedruckten Druckbogen Messfelder optisch abgetastet werden, wobei der jeweils für ein Messfeld mit Hilfe der Abtastung gewonnene Ist-Farbort mit einem vorgegebenen Soll-Farbort verglichen wird und wobei ferner Farbführungsorgane der Druckmaschine im Sinne einer Verringerung der Farbabweichungen gesteuert werden.By the DE 38 12 099 A1 a method for color control of a printing machine is known, wherein on the printed sheet printed by the printing press measuring fields are scanned, wherein each obtained for a measuring field using the sample actual color location is compared with a predetermined target color location and further wherein color guide elements of the printing press be controlled in the sense of a reduction of color deviations.

Durch die DE 40 04 056 A1 ist ein Verfahren zur Farbsteuerung und zonenweisen Voreinstellung von Farbdosierelementen in Farbwerken von Rotationsdruckmaschinen, insbesondere Offset-Rotationsdruckmaschinen, bekannt, wobei von der Druckmaschine hergestellte Druckbilder abgetastet werden, beispielsweise densitometrisch oder farbmetrisch, und wobei die daraus gewonnenen Werte unter Einschaltung einer Druckträgerabtastlogik mit einem selbstlernenden System oder mit einem sogenannten Expertensystem einem Farbbedarfermittlungsrechner zuführbar sind, sodass während einer Andruck- und auch während einer Fortdruckphase die Voreinstellwerte laufend weiter präzisiert werden können.By the DE 40 04 056 A1 is a method for color control and zonal presetting of ink dosing elements in inking machines of rotary printing machines, in particular offset rotary printing machines, wherein printed images produced by the printing machine are scanned, for example densitometrically or colorimetrically, and the values obtained therefrom using print carrier scanning logic with a self-learning system or with a so-called expert system can be fed to a Farbbedarfermittlungsrechner, so that during a pressure and during a printing phase, the default values can be further specified on an ongoing basis.

Durch die DE 10 2004 021 601 A1 ist ein Inline-Farbmesssystem einer Druckmaschine bekannt, das auf bogenförmigen Bedruckstoffen während des Fortdrucks spektrale, densitometrische oder farbliche Messwerte z. B. unter Verwendung eines CCD-Bildsensors erfasst, wobei diese Messwerte als Steuerungsparameter zur Steuerung des Druckprozesses verwendet werden, wobei das Inline-Farbmesssystem dadurch kalibriert wird, dass z. B. mit einem Handdensitometer offline ermittelte Messwerte direkt an die Messelektronik des Inline-Farbmesssystems geleitet werden.By the DE 10 2004 021 601 A1 an inline color measuring system of a printing press is known, the spectral, densitometric or color readings z. B. using a CCD image sensor, these measurements are used as control parameters for controlling the printing process, wherein the in-line color measurement system is calibrated by z. For example, measured values taken offline with a hand densitometer can be routed directly to the measuring electronics of the Inline colorimetric system.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Einstellung eines Farbwerks einer Druckmaschine zu schaffen, bei dem eine von der Druckmaschine zu produzierende Druckqualität durch einen Eingriff, insbesondere Regeleingriff am Farbwerk der Druckmaschine trotz einer Verwendung unterschiedlicher Messverfahren in einer Einrichtephase der Druckmaschine und in deren Fortdruck ohne eine rechenintensive Überführung der Messwerte des in der Einrichtephase verwendeten Messverfahrens in das im Fortdruck verwendete Messverfahren eingestellt, insbesondere geregelt werden kann.The invention has for its object to provide a method for adjusting an inking unit of a printing machine, in which a to be produced by the printing press quality by an intervention, in particular control intervention on the inking unit of the printing press despite using different measuring methods in one Setting phase of the printing press and in their production without a computationally intensive transfer of the measured values of the measuring method used in the set-up phase can be set in the measuring method used in the continuous printing, in particular can be controlled.

Die Aufgabe wird erfingdungsgemäß durch die Merkmale des Anspruchs 1 gelöst.The object is achieved according to the invention by the features of claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass eine in einer Einrichtephase der Druckmaschine mithilfe einer insbesondere außerhalb der Druckmaschine angeordneten ersten Messeinrichtung vorgenommene Einstellung eines mit mindestens einem Farbwerk der Druckmaschine auf einem Bedruckstoff aufzutragenden Farbauftrags eine von der Druckmaschine zu produzierende Druckqualität festlegt, wobei die derart festgelegte Druckqualität zur Festlegung eines Sollwertes für eine zumindest das eine Farbwerk z. B. regelnde Regeleinrichtung einer von der ersten Messeinrichtung verschiedenen, insbesondere innerhalb der Druckmaschine angeordneten zweiten Messeinrichtung dient, z. B. eines vorzugsweise mit einer Kamera Bilder von einem Druckbild auf dem Bedruckstoff aufnehmenden Inline-Inspektionssystems. Ein mit der zu produzierenden Druckqualität korrespondierender, mit der zweiten Messeinrichtung erfasster Istwert wird in einer frühen Phase des Fortdrucks der Druckmaschine, vorzugsweise zu dessen Beginn, als Sollwert der Einstelleinrichtung, respektive Regeleinrichtung, festgelegt, sodass in dem weiteren, dieser Sollwertfestlegung nachfolgenden Fortdruck der Druckmaschine mit der zweiten Messeinrichtung erfasste Istwerte keiner besonderen Verarbeitung im Sinne einer Überführung oder Transformation bedürfen, um für die Einstellung oder Regelung des Farbwerks geeignet zu sein, wobei eine Eignung der Messwerte ja deren unmittelbare Vergleichbarkeit voraussetzt, so auch der mit der zweiten Messeinrichtung im Fortdruck erfassten Istwerte mit dem in der Einstelleinrichtung, respektive Regeleinrichtung festgelegten Sollwert.The achievable with the present invention consist in particular in that a made in a Einrichtephase the press using a particular outside the printing machine arranged first measuring device setting a to be applied with at least one inking unit of the printing press on a substrate color application determines a print quality to be produced by the printing machine, said the so-defined print quality for establishing a target value for at least one inking unit z. B. regulating control of a different from the first measuring device, in particular within the printing press arranged second measuring device is used, for. B. a preferably with a camera images of a printed image on the substrate receiving inline inspection system. An actual value corresponding to the print quality to be produced and recorded with the second measuring device is set in an early phase of the printing press, preferably at the beginning thereof, as the setpoint of the setting device, respectively control device, so that the further printing of the printing press subsequent to this setpoint setting is effected Actual values recorded with the second measuring device do not require any special processing in the sense of transfer or transformation in order to be suitable for adjusting or regulating the inking unit, whereby the suitability of the measured values presupposes their direct comparability, as well as that recorded with the second measuring device in the continuous printing Actual values with the setpoint specified in the setting device or control device.

Zur Vermeidung einer rechenintensiven und damit Zeit erfordernden Messwertanpassung werden mit der zweiten Messeinrichtung später, d. h. nach der hinsichtlich des zweiten Messverfahrens erfolgten Sollwertfestlegung erfasste Istwerte vielmehr allein mit einem früheren Istwert dieser zweiten Messeinrichtung verglichen, sodass nur gleichartige Messwerte einem Vergleich unterzogen werden. Da die Festlegung des Sollwertes der Einstelleinrichtung, respektive Regeleinrichtung, auf der Grundlage der zu produzierenden Druckqualität und nicht unmittelbar durch die Messwerte der ersten Messeinrichtung erfolgt, können die in der Einrichtephase verwendete erste Messeinrichtung und die im Fortdruck verwendete zweite Messeinrichtung ohne weiteres völlig unterschiedliche Messverfahren verwenden, was der Realität in einem Druckereibetrieb entspricht, und trotz einer Inkompatibilität der Messwerte dieser jeweiligen Messverfahren sind diese aufgrund des vorgeschlagenen Verfahrens dennoch zur Sicherung einer gleichbleibend hohen Druckqualität geeignet. So kann die erste Messeinrichtung z. B. ein densitometrisches Messverfahren verwenden, wohingegen die zweite Messeinrichtung z. B. als ein fotografisches System, insbesondere als ein Kamerasystem ausgebildet ist, wobei die dem Farbwerk der Druckmaschine zugeordnete und mit der zweiten Messeinrichtung in Verbindung stehende Einstelleinrichtung, respektive Regeleinrichtung, Abweichungen in den von der zweiten Messeinrichtung aufgenommenen Bildern insbesondere durch einen Bildvergleich erkennt und/oder ermittelt, wobei in dem Bildvergleich festgestellte Abweichungen von jeweils als Istwert aufgenommenen Bildern von einem als Sollwert festgelegten Bild als eine Veränderung in der produzierten Druckqualität interpretiert und im Sinne einer Minimierung dieser Abweichungen ausgeregelt werden. Mit der ersten Messeinrichtung z. B. durch ein densitometrisches Messverfahren ermittelte Farbdichtewerte vom Farbauftrag auf dem Bedruckstoff sind aufgrund des vorgeschlagenen Verfahrens nicht erst in Bilddaten zu überführen, um von der im Fortdruck verwendeten zweiten Messeinrichtung verwertbar zu sein.To avoid a computationally intensive and thus time-requiring measured value adjustment are later with the second measuring device, d. H. On the contrary, after the setpoint specification established with regard to the second measuring method, actual values are compared solely with an earlier actual value of this second measuring device, so that only similar measured values are subjected to a comparison. Since the setting of the setpoint value of the setting device or control device takes place on the basis of the print quality to be produced and not directly by the measured values of the first measuring device, the first measuring device used in the set-up phase and the second measuring device used in the further printing can readily use completely different measuring methods , which corresponds to the reality in a printing company, and despite an incompatibility of the measured values of these respective measuring methods, these are nevertheless due to the proposed method suitable for ensuring a consistently high print quality. Thus, the first measuring device z. B. use a densitometric measuring method, whereas the second measuring device z. B. is formed as a photographic system, in particular as a camera system, wherein the inking unit of the printing machine associated with the second measuring device in connection adjusting device, respectively control device detects deviations in the images recorded by the second measuring device in particular by an image comparison and / / or determined, wherein determined in the image comparison deviations from each recorded as an actual value images of a specified as a set value image is interpreted as a change in the produced quality of printing and compensated in the sense of minimizing these deviations. With the first measuring device z. B. determined by a densitometric measurement method color density values of ink application on the substrate are due to the proposed method not first to convert image data to be used by the second measuring device used in the continuous printing.

Mit dem vorgeschlagenen Verfahren erfolgt mit dem in der Einrichtephase verwendeten ersten Messverfahren eine Grundeinstellung der Druckmaschine. Die Sollwertfestsetzung des zweiten, im Fortdruck aktiven Messverfahrens baut dann auf einer optimalen Einstellung der Druckmaschine durch das erste Messverfahren auf, wobei keine Überführung der Messwerte des ersten Messverfahrens in vom zweiten Messverfahren verarbeitbare Messwerte erfolgt. Kennzeichnend ist somit insbesondere die Herkunft der Vorgabe für die Festsetzung des Sollwertes im zweiten Messverfahren, wobei das in der Einrichtephase verwendete erste Messverfahren zur Bildung einer Referenz für das zweite, im Fortdruck aktive Messverfahren genutzt wird.With the proposed method, a basic setting of the printing press takes place with the first measuring method used in the set-up phase. The setpoint setting of the second measuring method, which is active in the production run, then builds on an optimal setting of the printing press by the first measuring method, wherein no conversion of the measured values of the first measuring method into measured values processable by the second measuring method takes place. Characteristic is thus in particular the origin of the specification for setting the target value in the second measuring method, wherein the first measuring method used in the set-up phase is used to form a reference for the second measuring method active in the continuous printing.

Das vorgeschlagene Verfahren führt somit ergebnismässig zu einer schnell reagierenden Farbeinstellung, vorzugsweise Farbregelung einer Druckmaschine, wobei bei der Verwendung der Messmittel eine hohe Flexibilität besteht.The proposed method thus results in terms of a fast-reacting color adjustment, preferably color control of a printing machine, wherein there is a high flexibility in the use of the measuring means.

Das vorgeschlagene Verfahren zur Farbregelung einer Druckmaschine arbeitet im Wesentlichen sequentiell folgende Verfahrensschritte ab:The proposed method for color control of a printing press operates essentially sequentially from the following method steps:

In einer Einrichtephase der Druckmaschine wird mit einer insbesondere außerhalb- der Druckmaschine angeordneten ersten Messeinrichtung zunächst ein erster Istwert hinsichtlich eines an mindestens einem Farbwerk der Druckmaschine eingestellten, auf einem Bedruckstoff aufgetragenen Farbauftrags ermittelt.In a set-up phase of the printing machine, a first actual value is first of all determined with respect to a color application set on at least one inking unit of the printing press and applied to a printing material by a first measuring device arranged outside the printing press.

Sodann wird anhand dieses ersten Istwertes das mindestens eine den Farbauftrag auf dem Bedruckstoff auftragende Farbwerk für eine von der Druckmaschine zu produzierende Druckqualität eingestellt, was insbesondere dann geschieht, falls der ermittelte erste Istwert hinsichtlich der von der Druckmaschine zu produzierenden Druckqualität einen Korrekturbedarf anzeigt. Ein Vorliegen des Korrekturbedarfs kann vom Bedienpersonal der Druckmaschine oder durch eine maschinelle Einrichtung z. B. mittels eines Vergleichs des ermittelten ersten Istwertes mit z. B. aus einer Druckvorstufe bekannten Daten hinsichtlich der zu produzierenden Druckqualität beurteilt werden.Then, based on this first actual value, the at least one inking unit on the printing material is set for a print quality to be produced by the printing press, which happens in particular if the determined first actual value indicates a need for correction with regard to the print quality to be produced by the printing press. A presence of the need for correction can be made by the operator of the printing press or by a machine device z. B. by means of a comparison of the determined first actual value with z. B. from a prepress stage known data in terms of print quality to be produced.

Bei einem der Einrichtephase nachfolgenden Fortdruck der Druckmaschine werden dann mit einer von der ersten Messeinrichtung verschiedenen, insbesondere innerhalb der Druckmaschine angeordneten zweiten Messeinrichtung mehrere zweite Istwerte hinsichtlich des auf dem Bedruckstoff aufgetragenen Farbauftrags erfasst und einer an einer Einstellung des mindestens einen Farbwerks der Druckmaschine beteiligten Einstelleinrichtung oder einer an einer Regelung des mindestens einen Farbwerks der Druckmaschine beteiligten Regeleinrichtung zugeführt.In one of the Einrichtephase subsequent production of the printing press then a second second actual values are recorded with respect to the applied on the substrate ink application and a participating in a setting of the at least one inking unit of the printing machine adjustment or with a different from the first measuring device, in particular within the printing machine second measuring device supplied to a controller involved in a regulation of the at least one inking unit of the printing press.

Vorzugsweise in einer frühen Phase des Fortdrucks wird zumindest einer der mit der zweiten Messeinrichtung erfassten zweiten Istwerte, der mit der in der Einrichtephase hinsichtlich der von der Druckmaschine zu produzierenden Druckqualität zuletzt getroffenen Einstellung des Farbauftrags auf dem Bedruckstoff korrespondiert, in der das mindestens eine Farbwerk der Druckmaschine einstellenden Einstelleinrichtung oder regelnden Regeleinrichtung als deren Sollwert gesetzt.Preferably, in an early phase of the continuous printing, at least one of the second actual values detected by the second measuring device corresponds to the setting of the ink application last made in the setup phase with respect to the print quality to be produced by the printing press on the printing substrate in which the at least one inking unit of FIG Printing machine adjusting adjustment or regulating control device set as their target value.

Danach regelt vorzugsweise die Regeleinrichtung eine Abweichung anderer im Fortdruck der Druckmaschine ermittelter zweiter Istwerte von dem gesetzten Sollwert durch eine neue Einstellung des mindestens einen.den Farbauftrag auf dem Bedruckstoff auftragenden Farbwerks der Druckmaschine im Sinne einer Minimierung dieser von der Regeleinrichtung erkannten Abweichung aus. Alternativ erfolgt die Neueinstellung des den Farbauftrag auf dem Bedruckstoff auftragenden Farbwerks dadurch, dass wie zuvor in der Einrichtephase der Druckmaschine mit der ersten Messeinrichtung ein weiterer erster Istwert hinsichtlich des von dem Farbwerk der Druckmaschine aktuell auf dem Bedruckstoff aufgetragenen Farbauftrags ermittelt wird, wobei anhand dieses weiteren ersten Istwertes das den Farbauftrag auf dem Bedruckstoff auftragende Farbwerk hinsichtlich der von der Druckmaschine zu produzierenden Druckqualität im Sinne einer Minimierung der im Fortdruck der Druckmaschine von der Einstelleinrichtung, respektive Regeleinrichtung erkannten und/oder ermittelten Abweichung eingestellt wird.Thereafter, the control device preferably regulates a deviation of other second actual values determined in the printing press from the set desired value by a new setting of the inking unit of the printing press which applies at least one ink application on the printing substrate in order to minimize this deviation detected by the control device. Alternatively, the re-adjustment of the inking on the substrate applying inking is characterized in that as previously in the Einrichtephase the press with the first measuring device, a further first actual value is determined in terms of the inking of the press currently applied to the substrate color application, based on this further first actual value that the inking on the substrate applying inking is set with respect to the printing quality to be produced by the printing machine in the sense of minimizing the detected in the production of the printing machine of the setting, respectively control deviation and / or determined deviation.

In diesem Verfahren wird der in der Einrichtephase der Druckmaschine mit der ersten Messeinrichtung ermittelte erste Istwert z. B. densitometrisch und/oder farbmetrisch erfasst. Die Erfassung des zweiten Istwertes insbesondere innerhalb der Druckmaschine bei deren Fortdruck erfolgt z. B. mit einer als eine Kamera, vorzugsweise als eine Farbkamera ausgebildeten zweiten Messeinrichtung, wobei von der Kamera z. B. ein auf den Bedruckstoff gedrucktes Druckbild oder ein aufgedruckter Messbalken erfasst wird. Der beim Fortdruck der Druckmaschine erfasste zweite Istwert wird z. B. mit einer als ein Inline-Inspektionssystem ausgebildeten zweiten Messeinrichtung erfasst.In this method, the first actual value determined in the set-up phase of the printing machine with the first measuring device is z. B. detected by densitometry and / or colorimetry. The detection of the second actual value, in particular within the printing machine in its printing takes place z. B. with a trained as a camera, preferably as a color camera second measuring device, wherein the camera z. B. a printed on the substrate print image or an imprinted measuring bar is detected. The detected during the printing of the press second actual value is z. B. detected with a trained as an inline inspection system second measuring device.

In der Einrichtephase der Druckmaschine kann z. B. auch an mehreren Exemplaren des mit dem Farbauftrag versehenen Bedruckstoffes der mit der ersten Messeinrichtung ermittelte erste Istwert erfasst und ein Mittelwert dieser Istwerte ermittelt werden, wobei anhand dieses ermittelten Mittelwertes der Farbauftrag auf dem Bedruckstoff hinsichtlich der von der Druckmaschine zu produzierenden Druckqualität eingestellt wird.In the setup phase of the printing machine can z. B. also on several copies of the provided with the ink printing substrate of the first measuring device determined the first actual value and an average of these actual values are determined, based on this determined average of the inking is set on the substrate with respect to the print quality to be produced by the printing press.

Auch mit der im Fortdruck der Druckmaschine aktiven zweiten Messeinrichtung kann eine begrenzte Menge zweiter Istwerte, die jeweils mit der in der Einrichtephase hinsichtlich der von der Druckmaschine zu produzierenden Druckqualität getroffenen Einstellung des Farbauftrags auf dem Bedruckstoff korrespondieren, erfasst werden, wobei aus dieser Menge zweiter Istwerte ein Mittelwert ermittelt wird, wobei dann vorzugsweise dieser Mittelwert in der Einstelleinrichtung, respektive Regeleinrichtung als deren Sollwert gesetzt wird.Even with the second measuring device active in the printing press, a limited amount of second actual values, each corresponding to the setting of the ink application on the printing material made in the set-up phase with regard to the printing quality to be produced by the printing press, can be detected, whereby second actual values from this set an average value is determined, in which case preferably this mean value is set in the setting device or regulating device as its desired value.

Vorzugsweise wird der mit der hinsichtlich der von der Druckmaschine zu produzierenden Druckqualität getroffenen Einstellung des Farbauftrags auf dem Bedruckstoff korrespondierende, in der Einrichtephase der Druckmaschine mit der ersten Messeinrichtung ermittelte erste Istwert datentechnisch an einen zentralen Steuerstand der Druckmaschine und/oder an die zweite Messeinrichtung und/oder an die Einstelleinrichtung, respektive Regeleinrichtung übermittelt.Preferably, the setting of the ink application corresponding to the printing quality to be produced by the printing press on the printing substrate, first value determined in the set-up phase of the printing press with the first measuring device, is data-technically transferred to a central control station of the printing press and / or to the second measuring device and / or transmitted to the adjustment, respectively control device.

Es kann vorgesehen sein, dass die Einstelleinrichtung, respektive Regeleinrichtung die erkannte oder ermittelte Abweichung des im Fortdruck der Druckmaschine ermittelten zweiten Istwertes von dem gesetzten Sollwert auf einer z. B. zu dem zentralen Steuerstand der Druckmaschine gehörenden Anzeigeeinrichtung anzeigt und/oder mit einer Meldeeinrichtung meldet.It can be provided that the setting device, respectively control device detects the detected or determined deviation of the second actual value determined in the continuous printing of the printing press from the set desired value on a z. B. to the central control station of the printing press associated display device and / or reports with a message device.

Auch kann vorgesehen sein, dass die Einstelleinrichtung, respektive Regeleinrichtung die erkannte oder ermittelte Abweichung des im Fortdruck der Druckmaschine ermittelten zweiten Istwertes von dem gesetzten Sollwert automatisch oder erst nach einer manuellen Freigabe ausregelt.It can also be provided that the setting device or control device adjusts the recognized or determined deviation of the second actual value determined in the printing press from the setpoint value automatically or only after a manual release.

Eine weitere Option besteht darin, dass die Einstelleinrichtung, respektive Regeleinrichtung die erkannte oder ermittelte Abweichung des im Fortdruck der Druckmaschine ermittelten zweiten Istwertes von dem gesetzten Sollwert erst beim Erreichen oder beim Überschreiten einer für das Maß der Abweichung zuvor festgesetzten Toleranzgrenze ausregelt.A further option is that the setting device or control device corrects the detected or determined deviation of the second actual value determined in the printing press from the set desired value only when reaching or exceeding a tolerance limit previously set for the degree of deviation.

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

Es zeigen:

Fig. 1
eine Druckmaschine;
Fig. 2
eine perspektivische Darstellung eines Inline-Inspektionssystems in der Druckmaschine.
Show it:
Fig. 1
a printing machine;
Fig. 2
a perspective view of an inline inspection system in the printing press.

In der Fig. 1 ist als Druckmaschine beispielhaft eine Bogendruckmaschine dargestellt, wobei diese Bogendruckmaschine z. B. als eine Fünffarbendruckmaschine ausgebildet ist. Ausgehend von einem Bogenanleger 08 folgen in diesem Beispiel in Produktionsrichtung fünf nacheinander angeordnete Druckwerke 01; 02; 03; 04; 06 und ein Lackturm 07 sowie eine Auslageverlängerung 09, wobei in einem aufsteigenden Ast eines Kettenlaufs der Auslageverlängerung 09 eine Kettenführung einen zum Ausleger 11 zu transportierenden Bogen 21 in seinem Transport stabilisiert. Der als Bogen 21 ausgebildete Bedruckstoff 21 ist sowohl im Bogenanleger 08 als auch im Ausleger 11 gestapelt. Im Bereich der Auslageverlängerung 09 sind vorzugsweise mehrere Trockner 12 angeordnet, die von mindestens einem der Druckwerke 01; 02; 03; 04; 06 frisch bedruckte Bogen 21 während ihres Transports in der Auslageverlängerung 09 z. B. mittels Infrarotstrahlung, Heißluft oder UV-Strahlung trocknen.In the Fig. 1 is as a printing machine exemplified a sheet-fed press, this sheet-fed press z. B. is designed as a five-color printing machine. Starting from a sheet feeder 08 follow in this example in the direction of production five successively arranged printing units 01; 02; 03; 04; 06 and a paint tower 07 and a delivery extension 09, wherein stabilized in an ascending branch of a chain run the delivery extension 09 a chain guide to the boom 11 to be transported sheet 21 in its transport. Trained as a sheet 21 substrate 21 is stacked both in the sheet feeder 08 and in the boom 11. In the area of the delivery extension 09, a plurality of dryers 12 are preferably arranged, which are separated from at least one of the printing units 01; 02; 03; 04; 06 freshly printed sheets 21 during their transport in the delivery extension 09 z. B. by means of infrared radiation, hot air or UV radiation.

Die Bogendruckmaschine druckt z. B. in einem Offsetdruckverfahren, wobei in jedem Druckwerk 01; 02; 03; 04; 06 je ein Formzylinder 13 und ein Übertragungszylinder 14 zusammenwirken. An jedem Formzylinder 13 ist ein mehrere Walzen aufweisendes Farbwerk 16 und vorzugsweise auch ein Feuchtwerk 17 angeordnet. Das Farbwerk 16 weist in Axialrichtung des Formzylinders 13 mehrere, z. B. dreißig und mehr aneinandergereihte Farbzonen mit einer Breite von jeweils z. B. 30 mm auf, die hinsichtlich der mit dem Farbwerk 16 auf dem Bedruckstoff 21 aufzutragenden Schichtdicke der Druckfarbe jeweils mit einem Stellelement, z. B. einer Zonenrakel, vorzugsweise durch eine von einem zur Druckmaschine gehörenden zentralen Steuerstand 27, z. B. Leitstand 27, betätigbare Fernverstellung einstellbar sind.The sheet-fed printing press z. B. in an offset printing process, wherein in each printing unit 01; 02; 03; 04; 06 each a form cylinder 13 and a transfer cylinder 14 cooperate. At each forme cylinder 13, a plurality of rollers having inking unit 16 and preferably also a dampening unit 17 is arranged. The inking unit 16 has in the axial direction of the forme cylinder 13 more, z. B. thirty and more juxtaposed ink zones with a width of z. B. 30 mm, with respect to the applied with the inking unit 16 on the substrate 21 layer thickness of the ink in each case with an actuating element, for. As a zone squeegee, preferably by a belonging to a press central control station 27, z. As control station 27, operable remote adjustment are adjustable.

Ein vom Bogenanleger 08 über eine Zuführtrommel 18 dem in Produktionsrichtung ersten Druckwerk 01 zugeführter Bogen 21 wird im Druckspalt zwischen dem Übertragungszylinder 14 und einem mit diesem Übertragungszylinder 14 zusammenwirkenden Druckzylinder 19 bedruckt und mittels einer Übergabetrommel 25 an das in Produktionsrichtung nachfolgende Druckwerk 02 übergeben, wo der Bogen 21 mit einer weiteren Druckfarbe bedruckt wird. Die Druckmaschine kann auch eine Wendetrommel (nicht dargestellt) zur Ausführung eines Schön- und Widerdrucks, d. h. eines beidseitigen Bedrucks des Bogens 21 aufweisen, wobei dann in der Druckmaschine in deren Produktionsrichtung z. B. zehn Druckwerke 01; 02; 03; 04; 06 aneinandergereiht sind.A from the sheet feeder 08 via a feed drum 18 in the production direction first printing unit 01 fed sheet 21 is printed in the nip between the transfer cylinder 14 and a cooperating with this transfer cylinder 14 printing cylinder 19 and transferred by means of a transfer drum 25 to the subsequent printing direction in the production unit 02, where the Bow 21 is printed with another ink. The printing machine can also have a turning drum (not shown) for carrying out a perfecting, ie a two-sided printing of the sheet 21, in which case in the printing machine in the production direction z. B. ten printing units 01; 02; 03; 04; 06 strung together.

In einer Einrichtephase der Druckmaschine wird z. B. einer von den ersten in der Druckmaschine bedruckten Bogen 21 vorzugsweise am Ausleger 11 entnommen und mit einer vorzugsweise außerhalb der Druckmaschine angeordneten ersten Messeinrichtung 22 hinsichtlich der von der Druckmaschine produzierten Qualität geprüft. Diese Bogenentnahme ist in der Fig. 1 durch eine gestrichelte Linie angedeutet. In der Einrichtephase der Druckmaschine wird z. B. ein einzelner Bogen 21 oder eine geringe Anzahl von Bogen 21 vorzugsweise mit einer gegenüber der im Fortdruck geltenden Produktionsgeschwindigkeit deutlich verringerten Geschwindigkeit durch die Druckmaschine transportiert.In a Einrichtephase the printing machine z. B. one of the first printed in the printing machine sheet 21 preferably removed from the boom 11 and tested with a preferably outside the printing machine arranged first measuring device 22 with respect to the quality produced by the printing press. This sheet withdrawal is in the Fig. 1 indicated by a dashed line. In the setup phase of the printing machine z. B. a single sheet 21 or a small number of sheets 21 preferably transported with a relation to the production rate applicable in production speed significantly reduced speed through the printing press.

Die erste Messeinrichtung 22 ist z. B. als ein Densitometer, z. B. als ein Handdensitometer, oder als ein Farbspektrometer oder als ein Kombinationsmessinstrument für eine densitometrische und farbmetrische Messung ausgebildet und ist z. B. an oder räumlich nahe dem zur Druckmaschine gehörenden zentralen Steuerstand 27 verfügbar. Anhand mindestens eines mit der ersten Messeinrichtung 22 ermittelten Messwertes, d. h. eines erfassten Istwertes für eine bestimmte Messgröße, z. B. für die auf dem Bedruckstoff 21 aufgetragene Schichtdicke einer bestimmten Druckfarbe oder für deren Farbton, wird im Abgleich mit einem Sollwert für diese Messgröße die von der Druckmaschine produzierte Qualität beurteilt. Die Prüfung des zu beurteilenden Bogens 21 kann sich auf das auf ihm aufgedruckte Druckbild oder zumindest auf einen zu dem Druckbild gehörenden Messbalken beziehen, wobei der Messbalken z. B. am Rand des Bogens 21 außerhalb des Druckbildes angeordnet ist. Falls der mit der ersten Messeinrichtung 22 ermittelte Istwert weiter vom gewünschten Sollwert abweicht, als es ein für diese Messgröße zuvor festgelegter Toleranzbereich zulässt, wird eine Einstellung an dem Farbwerk 16 von mindestens einem der Druckwerke 01; 02; 03; 04; 06 der Druckmaschine derart verändert, dass ein Istwert, der an einem nach der Änderung der Einstellung am Farbwerk 16 bedruckten Bogen 21 ermittelt wird, besser mit dem für diese Messgröße vorgegebenen Sollwert übereinstimmt, als es bei der vorangegangenen Messung war. Die aufgrund eines Soll/Istwertvergleichs erforderliche Einstellung an einem Farbwerk 16 von mindestens einem der Druckwerke 01; 02; 03; 04; 06 betrifft insbesondere eine Verstellung der den jeweiligen Farbzonen zugeordneten Stellelemente hinsichtlich der dort jeweils bereitgestellten Schichtdicke der Druckfarbe. Es kann vorgesehen sein, dass die erste Messeinrichtung 22 ihre Messwerte z. B. über eine elektrische Datenverbindung an den zentralen Steuerstand 27 leitet, wobei dem zentralen Steuerstand 27 z. B. durch einen Rechner der Druckvorstufe 28 der Sollwert hinsichtlich der mit der ersten Messeinrichtung 22 erfassten Messgröße bereitgestellt wird, sodass der zentrale Steuerstand 27 den erforderlichen Soll-/Istwertvergleich z. B. auch automatisiert ausführen kann.The first measuring device 22 is z. B. as a densitometer, z. B. as a Handdensitometer, or as a color spectrometer or as a combination measuring instrument for a densitometric and colorimetric measurement is formed and z. B. on or spatially close to belonging to the printing press central control station 27 available. On the basis of at least one measured value determined by the first measuring device 22, ie a detected actual value for a specific measured variable, eg. B. for the applied to the substrate 21 layer thickness of a particular ink or for their hue, the quality produced by the press is assessed in comparison with a target value for this measure. The examination of the sheet 21 to be evaluated may relate to the printed image printed thereon or at least to a measuring beam associated with the print bar, wherein the measuring bar z. B. is arranged on the edge of the sheet 21 outside the printed image. If the actual value determined with the first measuring device 22 is further away from desired setpoint deviates, as it allows for this measure previously specified tolerance range, a setting on the inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 of the printing machine changed so that an actual value, which is determined on a printed after the change of the setting on the inking unit 16 sheet 21, better matches the predetermined value for this measurement setpoint than it was in the previous measurement. The setting required on the basis of a desired / actual value comparison on an inking unit 16 of at least one of the printing units 01; 02; 03; 04; In particular, FIG. 6 relates to an adjustment of the adjusting elements assigned to the respective inking zones with regard to the layer thickness of the printing ink provided there. It can be provided that the first measuring device 22 their measured values z. B. via an electrical data connection to the central control station 27, wherein the central control station 27 z. B. by a computer of the prepress 28, the target value is provided with respect to the detected with the first measuring device 22 measured variable, so that the central control station 27, the required setpoint / actual value comparison z. B. can also run automatically.

Bei einer ausreichenden Übereinstimmung von einem mit der ersten Messeinrichtung 22 ermittelten Messwert mit dem für diese Messgröße vorgegebenen Sollwert gilt die Einrichtephase der Druckmaschine als erfolgreich abgeschlossen, weil mit der aktuell vorliegenden Einstellung des jeweiligen Farbwerks 16 von mindestens einem der Druckwerke 01; 02; 03; 04; 06 die gewünschte Qualität für das mit der Druckmaschine zu produzierende Druckerzeugnis erzielbar ist, und die Druckmaschine kann für den Fortdruck, d. h. für den Transport des Bedruckstoffes 21 in voller Produktionsgeschwindigkeit, freigegeben werden. Der für die erste Messeinrichtung 22 geltende Sollwert kann z. B. durch einen Musterbogen oder elektronisch durch Daten von dem Rechner der Druckvorstufe 28 bereitgestellt werden. Die von der ersten Messeinrichtung 22 ermittelten Messwerte werden als erste Istwerte bezeichnet.If there is sufficient agreement between a measured value determined with the first measuring device 22 and the setpoint value specified for this measured variable, the set-up phase of the printing machine is considered to be successfully completed, because with the current setting of the respective inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06, the desired quality for the print product to be produced with the printing product can be achieved, and the printing press can be released for the continuous printing, ie for the transport of the printing material 21 at full production speed. The applicable for the first measuring device 22 setpoint can, for. B. by a pattern sheet or electronically provided by data from the computer of the prepress 28. The measured values determined by the first measuring device 22 are referred to as first actual values.

In der Druckmaschine ist vorzugsweise am in Produktionsrichtung letzten Druckwerk 06 oder an dem den Druckwerken 01; 02; 03; 04; 06 nachgeordneten Lackturm 07 eine zweite Messeinrichtung 23 vorgesehen, wobei die zweite Messeinrichtung 23 z. B. als ein Inline-Inspektionssystem ausgebildet ist und z. B. mindestens ein Kamerasystem und mindestens eine Beleuchtungseinheit aufweist. Die Kamera ist z. B. als eine Farbkamera ausgebildet und z. B. als eine Zeilenkamera oder als eine Flächenkamera konfiguriert. Sie kann als Bildsensor z. B. einen CCD-Chip oder einen CMOS-Chip aufweisen. Die Beleuchtungseinheit erstreckt sich in Axialrichtung des Formzylinders 13 vorzugsweise über dessen gesamte Länge. Die Beleuchtungseinheit weist als Leuchtmittel z. B. Leuchtdioden oder Laserdioden auf, vorzugsweise mehrere zueinander parallele Reihen von Leuchtdioden oder Laserdioden, wobei die Leuchtdioden oder Laserdioden selektiv und entweder gepulst oder im Dauerlicht betrieben werden.In the printing machine is preferably on in the direction of production last printing unit 06 or on the printing units 01; 02; 03; 04; 06 downstream paint tower 07 a second measuring device 23 is provided, wherein the second measuring device 23 z. B. is designed as an in-line inspection system and z. B. has at least one camera system and at least one lighting unit. The camera is z. B. formed as a color camera and z. B. configured as a line scan camera or as an area camera. It can be used as an image sensor z. B. have a CCD chip or a CMOS chip. The lighting unit extends in the axial direction of the forme cylinder 13 preferably over its entire length. The lighting unit has as a light source z. As light-emitting diodes or laser diodes, preferably a plurality of mutually parallel rows of light-emitting diodes or laser diodes, wherein the light-emitting diodes or laser diodes selectively and either pulsed or operated in continuous light.

Die zweite Messeinrichtung 23 nimmt von mindestens einem, vorzugsweise von allen im Fortdruck durch die Druckmaschine transportierten Bogen 21 jeweils mindestens ein Bild auf, wobei die zweite Messeinrichtung 23 insbesondere das auf dem Bogen 21 aufgedruckte Druckbild erfasst, wobei die zweite Messeinrichtung 23 das aufgenommene Bild in vorzugsweise digitale Bilddaten wandelt und z. B. einem Bildverarbeitungssystem 24 zuführt. Die von der zweiten Messeinrichtung 23 erfassten Messwerte, z. B. die mit dem aufgenommenen Druckbild korrelierenden elektrischen Bilddaten, werden als zweite Istwerte bezeichnet. Die von der zweiten Messeinrichtung 23 vorgenommene Bildaufnahme ist in der Fig. 1 durch eine gestrichelte Pfeillinie angedeutet.The second measuring device 23 receives at least one, preferably all of the printed in the continuous printing by the printing press sheet 21 at least one image, the second measuring device 23 detects in particular the printed on the sheet 21 printed image, wherein the second measuring device 23, the recorded image in preferably digital image data converts and z. B. an image processing system 24 supplies. The detected by the second measuring device 23 measured values, eg. As correlated with the recorded image pressure electrical image data are referred to as second actual values. The image taken by the second measuring device 23 is in the Fig. 1 indicated by a dashed arrow line.

Zumindest einer der zu Beginn oder in einer frühen Phase des Fortdruckes von der zweiten Messeinrichtung 23 erfassten zweiten Istwerte wird in einer das Farbwerk 16 von mindestens einem der Druckwerke 01; 02; 03; 04; 06 einstellenden Einstelleinrichtung 26, vorzugsweise einer das Farbwerk 16 von mindestens einem der Druckwerke 01; 02; 03; 04; 06 regelnden Regeleinrichtung 26, als deren Sollwert gesetzt, wobei in einer bevorzugten Ausführung die Regeleinrichtung 26 z. B. die den jeweiligen Farbzonen zugeordneten Zonenrakel z. B. mittels Stellantriebe insbesondere automatisiert einstellt. Damit wird die in der Einrichtephase der Druckmaschine als gut befundene Qualität des mit der Druckmaschine produzierten Druckerzeugnisses in die Einstelleinrichtung 26, respektive Regeleinrichtung 26, eingelernt. Die frühe Phase des Fortdruckes bildet somit für die Einstelleinrichtung 26, respektive Regeleinrichtung 26, eine Einlernphase, in der die Einstelleinrichtung 26, respektive Regeleinrichtung 26, für den weiteren Fortdruck der Druckmaschine konfiguriert wird. Die Konfiguration der Einstelleinrichtung 26, respektive Regeleinrichtung 26, und des mindestens einen von ihr geregelten Farbwerks 16 kann durch eine selbsttätige Durchführung der Einlernphase oder in Verbindung mit einer Betätigung z. B. am zentralen Steuerstand 27 erfolgen. Nach Abschluss der Einlernphase werden alle weiteren im Fortdruck produzierten Druckerzeugnisse auf der Grundlage des in der Einlernphase festgelegten Sollwertes beurteilt. Wenn z. B. das Bildverarbeitungssystem 24 eine Abweichung der nach Abschluss der Einlernphase von der zweiten Messeinrichtung 23 erfassten zweiten Istwerte von dem in der Einlernphase festgelegten Sollwert ermittelt, und zwar eine Abweichung, die über einen für die Messgröße der zweiten Messeinrichtung 23 zuvor festgelegten Toleranzbereich hinausgeht, dann beginnt vorzugsweise die das Farbwerk 16 von mindestens einem der Druckwerke 01; 02; 03; 04; 06 einstellende Einstelleinrichtung 26, respektive die das Farbwerk 16 von mindestens einem der Druckwerke 01; 02; 03; 04; 06 regelnde Regeleinrichtung 26, die Einstellung für dieses mindestens eine Farbwerk 16 derart zu verändern, dass die von der zweiten Messeinrichtung 23 im Fortdruck vorzugsweise fortlaufend erfassten zweiten Istwerte wieder näher an den für die entsprechende Messgröße festgelegten Sollwert herangeführt werden.At least one of the second actual values recorded by the second measuring device 23 at the beginning or in the early phase of the printing operation is recorded in an inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 adjusting adjustment 26, preferably one of the inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 regulating controller 26, set as their setpoint, wherein in a preferred embodiment, the control device 26 z. B. the respective color zones associated zone squeegee z. B. automatically adjusted by means of actuators, for example. In this way, the quality of the printed product produced by the printing press, which was found to be good in the set-up phase of the printing press, is taught into the setting device 26 or control device 26. The early phase of the continuous printing thus forms for the adjusting device 26, respectively control device 26, a teach-in phase, in which the adjusting device 26, respectively control device 26, is configured for the further printing of the printing machine. The configuration of the adjuster 26, respectively control device 26, and the at least one regulated by their inking unit 16 can be achieved by an automatic implementation of the teach-in phase or in conjunction with an actuation z. B. at the central control station 27. After completion of the training phase, all other printed products produced in the print run are evaluated on the basis of the target value specified in the training phase. If z. If, for example, the image processing system 24 detects a deviation of the second actual values detected by the second measuring device 23 from the setpoint defined in the teaching phase, specifically a deviation that exceeds a tolerance range previously set for the measured variable of the second measuring device 23 Preferably begins the inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 adjusting adjustment 26, respectively the inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 regulating controller 26 to change the setting for this at least one inking unit 16 such that the second actual values preferably continuously recorded by the second measuring device 23 in the production pressure are again brought closer to the setpoint specified for the corresponding measured variable.

Die anhand der von der zweiten Messeinrichtung 23 erfassten Messwerte geführte Einstelleinrichtung 26, respektive Regeleinrichtung 26, führt somit bei bestehendem Korrekturbedarf vorzugsweise automatisch eine Neueinstellung des Farbwerks 16 von mindestens einem der Druckwerke 01; 02; 03; 04; 06 durch und ist damit in seiner Einstellung, respektive in seinem Regeleingriff der in der Einrichtephase der Druckmaschine z. B. durch den zentralen Steuerstand 27 getroffenen Einstellung des Farbwerks 16 überlagert, wobei jedoch der in Verbindung mit der ersten Messeinrichtung 22 durchgeführte Einstellprozess und der in Verbindung mit der zweiten Messeinrichtung 23 durchgeführte Einstellprozess jeweils autark erfolgen. Eine rechnerische Überführung von Messwerten der ersten Messeinrichtung 22 in z. B. von dem Bildverarbeitungssystem 24 verarbeitbare Bilddaten erfolgt nicht. Vielmehr wird die mithilfe der ersten Messeinrichtung 22 eingestellte Qualität des mit der Druckmaschine zu produzierenden Druckerzeugnisses zur Festsetzung des Sollwertes für die mit der zweiten Messeinrichtung 23 in Verbindung stehende Einstelleinrichtung 26, respektive Regeleinrichtung 26, verwendet, wobei das mit der in der Einrichtephase getroffenen Einstellung des Farbwerks 16 korrespondierende jeweilige Druckbild auf den Bogen 21 zur Führungsgröße für die im Fortdruck aktive Einstelleinrichtung 26, respektive Regeleinrichtung 26 wird. Die bei einem erkannten Korrekturbedarf vorzunehmende Neueinstellung des Farbwerks 16 von mindestens einem der Druckwerke 01; 02; 03; 04; 06 kann auch derart erfolgen, dass die Einstelleinrichtung 26, respektive Regeleinrichtung 26 auf die erkannte Abweichung der im Fortdruck der Druckmaschine ermittelten zweiten Istwerte von dem gesetzten Sollwert hinweist und/oder z. B. an einer Anzeigeeinrichtung 32 des Leitstandes 27 einen Korrekturvorschlag für die Einstellung der Farbzonen des Farbwerks 16 anzeigt, woraufhin z. B. dieser Korrekturvorschlag vom Bedienpersonal der Druckmaschine durch eine Quittierung akzeptiert oder durch eine andere Eingabe abgelehnt werden kann. Durch eine nicht zwangsläufige Neueinstellung des Farbwerks 16 können insbesondere kurzzeitige Störungen, die z. B. nach einem Nachfüllen von Druckfarbe an einem Farbwerk 16 oder durch eine Fehlmenge an Feuchtmittel auftreten können, ignoriert werden. Eine Meldeeinrichtung kann auf den an der Anzeigeeinrichtung 32 angezeigten Korrekturvorschlag hinweisen. Auch kann vorgesehen sein, dass die Einstelleinrichtung 26, respektive Regeleinrichtung 26, erst beim Erreichen oder beim Überschreiten einer für das Maß der Abweichung zuvor festgesetzten Toleranzgrenze auf die erkannte Abweichung des im Fortdruck der Druckmaschine ermittelten zweiten Istwertes von dem gesetzten Sollwert hinweist und/oder diese erkannte Abweichung anzeigt und/oder meldet und/oder ausregelt.The setting device 26, or control device 26, which is guided on the basis of the measured values recorded by the second measuring device 23, therefore, automatically leads to a readjustment of the inking unit 16 of at least one of the printing couples 01; 02; 03; 04; 06 through and is thus in his attitude, respectively in its regulatory intervention in the set-up of the Printing machine z. B. struck by the central control station 27 setting of the inking unit 16 superimposed, however, wherein the carried out in connection with the first measuring device 22 setting process and carried out in conjunction with the second measuring device 23 setting process each carried out independently. A mathematical transfer of measured values of the first measuring device 22 in z. B. processed by the image processing system 24 image data is not. Rather, the set by means of the first measuring device 22 quality of the printed matter to be produced with the printed product for setting the target value for the second measuring device 23 related adjustment 26, respectively control device 26, is used, with the setting made in the Einrichtephase of Inking unit 16 corresponding respective print image on the sheet 21 to the reference variable for the active in the production pressure adjustment 26, respectively control device 26 is. The re-adjustment of the inking unit 16 of at least one of the printing units 01; 02; 03; 04; 06 can also be such that the setting 26, respectively control device 26 indicates the detected deviation of the determined in the printing of the press second actual values of the set target value and / or z. B. on a display device 32 of the control station 27 indicates a correction proposal for the setting of the ink zones of the inking unit 16, whereupon z. B. this correction proposal can be accepted by the operator of the printing press by an acknowledgment or rejected by another input. By not necessarily re-adjustment of the inking unit 16 in particular short-term disturbances z. B. can occur after a refill of ink on an inking unit 16 or by a lack of fountain solution can be ignored. A message device may indicate the correction suggestion displayed on the display device 32. It can also be provided that the setting device 26, or control device 26, only upon reaching or when exceeding a previously set for the degree of deviation tolerance limit on the detected deviation of the determined in the production of the printing press second Actual value of the set target value indicates and / or displays this detected deviation and / or reports and / or corrects.

Des Weiteren kann vorgesehen sein, dass die Neueinstellung des den Farbauftrag auf dem Bedruckstoff 21 auftragenden Farbwerks 16 dadurch erfolgt, dass wie zuvor in der Einrichtephase der Druckmaschine mit der ersten Messeinrichtung 22 ein weiterer erster Istwert hinsichtlich des von dem Farbwerk 16 der Druckmaschine aktuell auf dem Bedruckstoff 21 aufgetragenen Farbauftrags ermittelt wird, wobei anhand dieses weiteren ersten Istwertes das den Farbauftrag auf dem Bedruckstoff 21 auftragende Farbwerk 16 hinsichtlich der von der Druckmaschine zu produzierenden Druckqualität im Sinne einer Minimierung der im Fortdruck der Druckmaschine von der Einstelleinrichtung 26, respektive Regeleinrichtung 26, ermittelten Abweichung eingestellt wird. Bei dieser alternativen Ausführung ist die Einstelleinrichtung 26, respektive Regeleinrichtung 26, zwar an der Einstellung, respektive Regelung, der hinsichtlich der von der Druckmaschine zu produzierenden Druckqualität beteiligt, jedoch nur als eine die Produktion beobachtende Einrichtung, welche vorzugsweise fortlaufend und durch eine Erfassung aller produzierten Exemplare des herzustellenden Druckerzeugnisses die Abweichung ermittelt, die sich im Fortdruck der Druckmaschine von dem in der zweiten Messeinrichtung 23 eingestellten Sollwert z. B. durch eine insbesondere anhaltende Störung im Farbtransport und/oder durch eine Störung in der erforderlichen Balance von Druckfarbe und Feuchtmittel ergibt. Im Fall einer ermittelten, insbesondere eine zuvor festgesetzte Toleranzgrenze überschreitenden Abweichung setzt die Einstelleinrichtung 26, respektive Regeleinrichtung 26 einen entsprechenden Hinweis ab, welcher z. B. an der zum Leitstand 27 gehörenden Anzeigeeinrichtung 32 angezeigt wird. Daraufhin kann das Bedienpersonal am Ausleger 11 der Druckmaschine einen Bogen 21 entnehmen, diesen wie zuvor in der Einrichtephase der Druckmaschine mithilfe der ersten Messeinrichtung 22 erneut vermessen und das den Farbauftrag auf dem Bogen 21 auftragende Farbwerk 16 z. B. am Leitstand 27 hinsichtlich der von der Druckmaschine zu produzierenden Druckqualität im Sinne einer Minimierung der im Fortdruck der Druckmaschine von der Regeleinrichtung 26 ermittelten Abweichung neu einstellen. Es ist zumeist nicht erforderlich, für eine Durchführung dieser Neueinstellung die Produktion der Druckmaschine anzuhalten. Die Neueinstellung des den Farbauftrag auf dem Bogen 21 auftragenden Farbwerks 16 anhand eines von der Einstelleinrichtung 26, respektive Regeleinrichtung 26 gegebenen Hinweises vorzunehmen, hat den Vorteil, dass vor allem eine sich im Fortdruck allmählich entwickelnde Abweichung in der von der Druckmaschine zu produzierenden Qualität des Druckerzeugnisses aufgrund der mit der zweiten Messeinrichtung 23 ermittelten Messwerte je nach der dafür zuvor festgesetzten Toleranzgrenze bedeutend früher und zuverlässiger erkannt werden kann, als es allein aufgrund einer Beobachtung der Produktion durch das Bedienpersonal möglich ist, sodass auch frühzeitiger eine Korrektur der Einstellung des den Farbauftrag auf dem Bogen 21 auftragenden Farbwerks 16 erfolgen kann und damit die Produktion von Makulatur vermindert wird.Furthermore, it can be provided that the readjustment of the inking 16 applied to the substrate 21 inking done by the fact that, as before in the set-up of the printing press with the first measuring device 22, another first actual value with respect to the of the inking unit 16 of the printing press currently on the Substrate 21 applied color application is determined, based on this further first actual value of the ink application on the substrate 21-applying inking unit 16 with respect to the printing quality to be produced by the printing machine in terms of minimizing the in the printing press of the printing device 26, respectively control device 26 determined Deviation is set. In this alternative embodiment, although the adjusting means 26, respectively regulating device 26, is involved in setting the printing quality to be produced by the printing press, it only acts as a production observing device which preferably produces continuously and by detecting all Specimens of the printed product to be determined the deviation, which in the printing press of the set in the second measuring device 23 setpoint z. B. results by a particular persistent disturbance in the color transport and / or by a disturbance in the required balance of ink and fountain solution. In the case of a determined, in particular a previously set tolerance limit exceeding deviation sets the adjuster 26, respectively control device 26 from a corresponding hint from which z. B. is displayed on the control unit 27 belonging to the display device 32. Then, the operator on the boom 11 of the printing machine can take a sheet 21, this again measured as before in the set-up of the printing press using the first measuring device 22 and the ink application on the sheet 21 applying inking unit 16 z. B. on the control station 27 in terms of the print quality to be produced by the printing press in terms of minimizing the in the printing of the Re-set printing press of the control device 26 detected deviation. It is usually not necessary to stop the production of the printing press to carry out this readjustment. The readjustment of the ink application 16 on the sheet 21 applying inking unit 16 on the basis of a 26 given by the setting 26, respectively control hint, has the advantage that especially a gradually developing in the printing process deviation in the quality of the printed product to be produced by the printing press due to the measured values determined with the second measuring device 23 can be detected significantly earlier and more reliably, depending on the previously set tolerance limit than is possible solely on the basis of an observation of the production by the operating personnel, so that a correction of the setting of the ink application on the Sheet 21 applying inking 16 can be done and thus the production of waste paper is reduced.

Es ist von Vorteil, in der Einlernphase mit der zweiten Messeinrichtung 23 eine begrenzte Menge zweiter Istwerte, die jeweils mit der in der Einrichtephase hinsichtlich der von der Druckmaschine zu produzierenden Druckqualität getroffenen Einstellung des Farbauftrags auf dem Bedruckstoff 21 korrespondieren, zu erfassen und aus dieser Menge zweiter Istwerte z. B. in dem Bildverarbeitungssystem 24 einen Mittelwert zu ermitteln, wobei dann dieser Mittelwert in der Einstelleinrichtung 26, respektive Regeleinrichtung 26, als deren Sollwert gesetzt wird.It is advantageous in the teaching-in phase with the second measuring device 23 to detect a limited amount of second actual values, which correspond in each case to the setting of the ink application on the printing substrate 21 made in the setup phase with regard to the print quality to be produced by the printing press, and from this quantity second actual values z. B. in the image processing system 24 to determine an average, in which case this mean value is set in the adjuster 26, respectively control device 26, as the desired value.

Es kann z. B. auch vorgesehen sein, dass die Messwerte der ersten Messeinrichtung 22 z. B. von dem Bildverarbeitungssystem 24 oder in einer anderen Speichereinrichtung archiviert werden, sodass die erste Messeinrichtung 22 ihr Messverfahren nicht zwangsläufig bei jedem Andruck neu ausführen muss, sondern dass bei Abarbeitung eines zum früheren Druckauftrag gleichartigen Folgeauftrages von der Einstelleinrichtung 26, respektive Regeleinrichtung 26, auf die archivierten Messwerte zurückgegriffen werden kann.It can, for. B. also be provided that the measured values of the first measuring device 22 z. Example, be archived by the image processing system 24 or in another storage device, so that the first measuring device 22 does not necessarily re-execute their measuring method at each pressure, but that during execution of a similar order to the previous print order from the setting 26, respectively control device 26 on the archived measured values can be used.

Fig. 2 zeigt in einem Ausschnitt aus der in der Fig. 1 gezeigten Druckmaschine eine Anordnung der als eine Kamera ausgebildeten zweiten Messeinrichtung 23, wobei die Kamera durch eine sich in Axialrichtung des Druckzylinders 19 erstreckende vorzugsweise schlitzförmige Öffnung 29 z. B. in einem Fußtritt 31 an einem der Druckwerke 01; 02; 03; 04; 06 oder an dem Lackturm 07 Messwerte von einem entlang des Druckzylinders 19 transportierten Bogens 21 erfasst. Die Kamera weist dabei einen sich entlang der Axialrichtung des Druckzylinders 19 öffnenden Erfassungswinkel α auf. Dazu ist die Kamera der zweiten Messeinrichtung 23 z. B. mit einem Weitwinkelobjektiv ausgestattet. Der Druckzylinder 19 weist in seiner Axialrichtung eine Länge L im Bereich z. B. von 300 mm bis 2.100 mm auf, vorzugsweise 700 mm bis 1.100 mm. In Axialrichtung des Druckzylinders 19 können nebeneinander auch mehrere Kameras der zweiten Messeinrichtung 23 angeordnet sein, deren jeweiliger Erfassungswinkel α dann jeweils nur einen Teil der Länge L des Druckzylinders 19 erfasst, sodass der Erfassungswinkel α einer jeden Kamera in seiner jeweiligen öffnungsweite jeweils geringer bemessen sein kann, wodurch verzerrungsfreiere Aufnahmen vom Druckbild auf den Bogen 21 möglich sind. Fig. 2 shows in a section of the in the Fig. 1 shown printing machine, an arrangement of the camera formed as a second measuring device 23, wherein the camera by a in the axial direction of the printing cylinder 19 extending preferably slot-shaped opening 29 z. B. in a tread 31 on one of the printing units 01; 02; 03; 04; 06 or on the coater tower 07 measured values of an along the printing cylinder 19 transported sheet 21 detected. In this case, the camera has a detection angle α which opens along the axial direction of the printing cylinder 19. For this purpose, the camera of the second measuring device 23 z. B. equipped with a wide-angle lens. The pressure cylinder 19 has in its axial direction a length L in the range z. B. from 300 mm to 2100 mm, preferably 700 mm to 1100 mm. In the axial direction of the printing cylinder 19, several cameras of the second measuring device 23 can be arranged side by side, the respective detection angle α then only a portion of the length L of the printing cylinder 19 detected, so that the detection angle α of each camera in its respective opening width can each be dimensioned smaller , whereby distortion-free recordings of the printed image on the sheet 21 are possible.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

0101
Druckwerkprinting unit
0202
Druckwerkprinting unit
0303
Druckwerkprinting unit
0404
Druckwerkprinting unit
0505
--
0606
Druckwerkprinting unit
0707
Lackturmcoater
0808
Bogenanlegersheet feeder
0909
Auslageverlängerungdelivery extension
1010
--
1111
Auslegerboom
1212
Trocknerdryer
1313
Formzylinderform cylinder
1414
Übertragungszylindertransfer cylinder
1515
--
1616
Farbwerkinking
1717
Feuchtwerkdampening
1818
Zuführtrommelfeed drum
1919
Druckzylinderpressure cylinder
2020
--
2121
Bedruckstoff, BogenSubstrate, sheet
2222
erste Messeinrichtungfirst measuring device
2323
zweite Messeinrichtungsecond measuring device
2424
BildverarbeitungssystemImage processing system
2525
ÜbergabetrommelTransfer drum
2626
Einstelleinrichtung, RegeleinrichtungAdjustment device, control device
2727
Steuerstand, LeitstandHelm, control room
2828
Druckvorstufeprepress
2929
Öffnungopening
3030
--
3131
Fußtrittkick
3232
Anzeigeeinrichtungdisplay
αα
Erfassungswinkelangle of coverage
LL
Längelength

Claims (16)

  1. Method for setting an inking unit (16) of a printing press, at least one first actual value with respect to an ink application set on the inking unit (16) of the printing press and applied to at least one print material (21) being determined in a setup phase of the printing press with a first measuring device (22), the inking unit (16) applying the ink to the print material (21) being set on the basis of this first actual value, a plurality of second actual values with respect to a printed image printed on the print material (21) being determined in a production run of the printing press with a second measuring device (23) which differs from the first measuring device (22) and being fed to a setting device (26) which sets the inking unit (16), at least one of the second actual values which is determined with the second measuring device (23) and corresponds to the setting of the ink application to the print material (21), which is made in the setup phase, being set in the setting device (26) as the setpoint value thereof, the setting device (26) at least detecting a deviation of other second actual values, determined in a production run of the printing press, from the set setpoint value and minimising this deviation by a readjustment of the inking unit (16) which applies ink to the print material (21), the first actual value determined in the setup phase of the printing press with the first measuring device (22) being determined densitometrically and/or colorimetrically, the second actual values determined in a production run of the printing press being determined with a second measuring device (23) in the form of a camera.
  2. Method according to Claim 1, characterized in that the first actual value determined in the setup phase of the printing press with the first measuring device (22) is determined outside the printing press.
  3. Method according to Claim 1, characterized in that the second actual values determined in the production run of the printing press with the second measuring device (23) are determined within the printing press.
  4. Method according to Claim 1, characterized in that the second actual values determined in the production run of the printing press are determined with a second measuring device (23) in the form of an inline inspection system.
  5. Method according to Claim 1, characterized in that a printed image printed on the print material (21) is detected.
  6. Method according to Claim 1, characterized in that in each case the first actual value is determined with the first measuring device (22) in the setup phase of the printing press on a plurality of copies of the print material (21) provided with the ink application and a mean value of these actual values is determined, the ink application to the print material (21) being set on the basis of this mean value determined.
  7. Method according to Claim 1, characterized in that a limited set of second actual values, which in each case correspond to the setting of the ink application to the print material (21), made in the setup phase, is determined with the second measuring device (23), a mean value being determined from this set of second actual values, this mean value being set in the setting device as the setpoint value thereof.
  8. Method according to Claim 1, characterized in that the at least one first actual value determined in the setup phase of the printing press with the first measuring device (22) is transmitted via a data system to a central control station (27) of the printing press.
  9. Method according to Claim 1, characterized in that the setting device (26) indicates the detected deviation of the second actual values, determined in the production run of the printing press, from the set setpoint value.
  10. Method according to Claim 1, characterized in that the setting device (26) displays the detected deviation of the second actual values, determined in the production run of the printing press, from the set setpoint value on a display device (32) and/or signals said deviation with a signalling device.
  11. Method according to Claim 1, characterized in that the setting device (26) compensates for the detected deviation of the second actual values, determined in the production run of the printing press, from the set setpoint value.
  12. Method according to Claim 1, characterized in that the setting device (26) compensates, automatically or only after manual enabling, for the detected deviation of the second actual values, determined in the production run of the printing press, from the set setpoint value.
  13. Method according to Claim 1, characterized in that the setting device (26) indicates the detected deviation of the second actual values, determined in the production run of the printing press, from the set setpoint value and/or displays and/or signals and/or compensates for this detected deviation, only on reaching or on exceeding a tolerance limit established beforehand for the extent of the deviation.
  14. Method according to Claim 1, characterized in that a readjustment of the inking unit (16) applying the ink to the print material (21) is effected by determining a further first actual value with respect to the current ink application to the print material (21) by the inking unit (16) of the printing press with the first measuring device (22), as previously in the setup phase of the printing press, the inking unit (16) applying the ink to the print material (21) being set, on the basis of this further first actual value, in order to minimise the deviation determined by the setting device (26) in the production run of the printing press.
  15. Method according to Claim 1, characterized in that a setting device (26) in the form of a regulating device (26) is used for ink regulation of the printing press.
  16. Method according to Claim 1, characterized in that the inking unit (16) applying the ink to the print material (21) is set in the setup phase and in the production run, in each case with respect to a print quality to be produced by the printing press.
EP07726833A 2006-03-28 2007-03-13 Method for setting an inking unit of a printing press Active EP1998959B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006014657A DE102006014657B4 (en) 2006-03-28 2006-03-28 Method for color control of a printing press
PCT/EP2007/052327 WO2007110317A1 (en) 2006-03-28 2007-03-13 Method for setting an inking unit of a printing press

Publications (2)

Publication Number Publication Date
EP1998959A1 EP1998959A1 (en) 2008-12-10
EP1998959B1 true EP1998959B1 (en) 2010-10-13

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US (1) US8001898B2 (en)
EP (1) EP1998959B1 (en)
JP (1) JP5306178B2 (en)
CN (1) CN101421109B (en)
AT (1) ATE484392T1 (en)
BR (1) BRPI0709224B1 (en)
DE (2) DE102006014657B4 (en)
ES (1) ES2349064T3 (en)
RU (1) RU2392124C1 (en)
WO (1) WO2007110317A1 (en)

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DE102006014657A1 (en) 2007-10-18
US8001898B2 (en) 2011-08-23
BRPI0709224A2 (en) 2011-07-12
JP5306178B2 (en) 2013-10-02
JP2009531202A (en) 2009-09-03
ATE484392T1 (en) 2010-10-15
BRPI0709224A8 (en) 2017-05-09
EP1998959A1 (en) 2008-12-10
CN101421109A (en) 2009-04-29
CN101421109B (en) 2011-04-20
WO2007110317A1 (en) 2007-10-04
ES2349064T3 (en) 2010-12-22
DE102006014657B4 (en) 2008-11-20
BRPI0709224B1 (en) 2018-10-09
US20100116164A1 (en) 2010-05-13
RU2392124C1 (en) 2010-06-20
DE502007005343D1 (en) 2010-11-25

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