EP0356705A2 - Data reading unit for an ink control devices - Google Patents

Data reading unit for an ink control devices Download PDF

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Publication number
EP0356705A2
EP0356705A2 EP89113667A EP89113667A EP0356705A2 EP 0356705 A2 EP0356705 A2 EP 0356705A2 EP 89113667 A EP89113667 A EP 89113667A EP 89113667 A EP89113667 A EP 89113667A EP 0356705 A2 EP0356705 A2 EP 0356705A2
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EP
European Patent Office
Prior art keywords
data
image
computer
densitometer
memory
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Granted
Application number
EP89113667A
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German (de)
French (fr)
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EP0356705A3 (en
EP0356705B1 (en
Inventor
Oded Zingher
Arno Wührl
Ullrich Behrendt
Ralf Schäfer
Günter Ziesing
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Manroland AG
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MAN Roland Druckmaschinen AG
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Priority to AT89113667T priority Critical patent/ATE96093T1/en
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Publication of EP0356705A3 publication Critical patent/EP0356705A3/en
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    • 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
    • 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 and a device according to the preamble of claim 1.
  • the device for carrying out these methods generally contain a densitometric measuring system, a computer system for recording and evaluating the data and color metering devices which are remotely adjustable. These systems are very complex since, for example, the densitometric measuring devices are built as automatic and motor-operated densitometers. In addition, a special print control bar must be provided on each print sheet, which contains measurement fields that the computer system needs for evaluating the print quality.
  • the task is to create a method and a device for the acquisition of data for the control of the ink supply, in which the mechanical outlay is considerably reduced and, moreover, the costs for the installation of special pressure control operators are saved, whereby but the data acquisition should still be able to be carried out safely.
  • Fig. 1 the diagram of a printed sheet is shown as it can occur in reality. Different print patterns are arranged in different fields. E.g. part of the print area could be covered with text and another part with pictures. The structure of such a set is often arranged in columns. In an extreme case, a printed sheet is subdivided into, for example, 8 or 16 equally large fields and thus also into 4 or 8 equally wide columns. In the diagram shown, the columns that appear are labeled A, B and C. When dividing the ink in the inking unit of a printing press, this division can now be taken into account, so it has been proposed to divide the printing area into zones which are parallel to one another in the longitudinal direction of the sheet. Image zones A, B and C can be used for color control.
  • a computer 1 is present therein, which performs data processing tasks and organizing tasks.
  • An image zone memory 2 is connected to the computer 1.
  • the image zone memory 2 is in turn connected to an input device 3.
  • In the input device 3 it is possible to define at which positions of a printing sheet limits for image zones are to be set. This can be done, for example, using the keyboard on color control systems parallel to a printed sheet. However, it is also possible to use visual aids from a personal computer on whose screen markings adapted to the image zones are to be generated. For example, this is done by symbols for ink metering elements, according to the arrangement within the printing press.
  • a data acquisition device 4, whose data are stored in an image data memory 5, is also connected to the computer 1.
  • the computer is connected to a multiplicity of color metering units 7 via a data bus 6.
  • the computer 1 accordingly establishes the connection on the one hand between the image zone memory and the color metering units and on the other hand also between the image data and the color metering units. This is done in such a way that when regulating a certain image zone, for example image zone B, the computer 1, because of its connection to the image zone memory 2, only controls the color metering units 7 which also belong to the image zone B.
  • the image data obtained by the measurement with the data acquisition device 4 are covered in the image data memory 5 in relation to the respective image zone. The computer 1 is able to do this since it can always query the image zone assignment in the image zone memory.
  • the image data is acquired by an arrangement as shown in FIG. 3.
  • the computer 1 as described, is connected to the image zone memory 2 and the image data memory 5.
  • the data acquisition device 4 consists of a densitometer 8 and a display device 9, 10.
  • An evaluation unit 11 is additionally provided within the computer 1. It is connected to the display device 10 and the densitometer 8.
  • the arrangement is carried out in the following manner for data acquisition or for the measurement of color density values:
  • the computer for measuring image data After the computer for measuring image data has been initialized, it releases the measurement on the display device 9.
  • a readiness display can be generated with the help of LEDs.
  • the assignment to the respective image zone is shown in the display device 10 using the evaluation device 11. This can be a digital display. This enables the printer to immediately see whether the densitometer is ready and in which image zone it should measure.
  • the data are transmitted to the evaluation device 11 and checked for plausibility and completeness.
  • the display device 9 shows on one of its LEDs that the densitometer is now blocked for other work.
  • the data transferred to the evaluation device 11 are stored in the image data memory 5 in relation to the respective image zone.
  • a release signal is again given to the display device 9, so that it can be seen that the densitometer is free again for other work.
  • the image zone is switched to the next image zone defined within a predetermined measuring cycle. This enables data acquisition for the next image zone.
  • a spectrophotometer can of course also be used for the data acquisition device.
  • a spectrophotometer can of course also be used for the data acquisition device.
  • only the evaluation algorithms in computer 1 have to be designed differently.
  • a hand-held densitometer 12 suitable for data acquisition. It consists of a swiveling measuring head 13 and a foot with a direction finder 14. With the help of the direction finder 14, the densitometer can be placed freely at any position that is to be measured.
  • the manual densitometer 12 is connected to the computer 1 via a data line 15.
  • an optical display 16 is attached on the hand densitometer 12 or on the measuring head 13. It can, for example, be attached to the measuring head with the aid of clips or held onto it with the aid of a rubber band. It can therefore be used on all possible types of densitometers.
  • the optical display is also connected to the computer 1 via two lines 17.
  • the measuring head 13 of the densitometer 12 In the standby position, the measuring head 13 of the densitometer 12 is inclined upwards, as shown.
  • the display devices 9, 10 are clearly visible on the optical display.
  • the computer 1 controls the light-emitting diodes 9 or the digital display 10 in such a way that the operating personnel are informed directly about the operating actions to be carried out or possible.
  • the measuring head 13 When the measuring head 13 is depressed, ie when a printed area is measured with regard to its color density values, the light-emitting diodes 9 are switched such that on the one hand a light-emitting diode lights up in red to indicate that the densitometer is currently busy with a measurement. Meanwhile, a second light emitting diode is not illuminated.
  • the second LED either lights up with a red flashing light or in green. Flashing red light means incorrect measurement or incomplete data transmission and green light means the measurement was OK and the measuring process can continue. Then the first LED is switched to green again.
  • a digital display shows the next image zone determined in the previously determined measurement sequence, with its letter or its numerical order. The operating display on the densitometer is therefore independent of the densitometer in terms of its connection and is only used for the precise and precise information of the operating personnel at the measuring location.
  • the processes described are intended for the rationalization and simplification of color control systems.
  • complex automatic color measuring devices are eliminated.
  • the freely positionable hand densitometer 12 can be used to measure anywhere in the printed sheet X.
  • the color control strip can not be omitted, but measurements can of course also be carried out on selected color measuring fields within the color control strip using the hand densitometer.
  • the densitometer it is also possible to use the densitometer to measure certain points that the printer knows from his experience as critical.
  • the type of display is not limited to the optical display 16 described with light-emitting diodes 9 and digital display 10.
  • acoustic display devices are also conceivable.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

For the simplification and less expensive manufacture of ink measuring apparatuses, a manual densitometer is connected to an ink control device. For simplifying operation, a user guide is provided by means of a display apparatus coupled to the densitometer. Using the manual densitometer, measurements can be taken on a printed sheet in freely selectable image zones. The image zones can be matched to the subject and the measuring points can be placed in the image region so that ink control strips are not required.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a method and a device according to the preamble of claim 1.

Es ist heute vielfach üblich an Druckmaschinen Regeleinrichtungen für die Farbzufuhr einzusetzen. Dabei müssen Daten über den Zustand des jeweils bedruckten Bildes erfasst und mit Solldaten, die vorher er­fasst wurden, verglichen werden. Die Einrichtung zur Durchführung dieser Verfahren enthalten in aller Regel eine densitometrische Meßan­lage, eine Rechenanlage zur Erfassung und Auswertung der Daten und Farbdosiereinrichtungen, die fernverstellbar sind. Diese Anlagen sind sehr aufwendig, da beispielsweise die densitometrischen Meßein­richtungen als automatische und motorisch betriebene Densitometer gebaut werden. Außerdem ist auf jedem Druckbogen eine spezielle Druckkontrolleiste vorzusehen, in der Meßfelder enthalten sind, die die Rechenanlage für die Bewertung der Druckqualität benötigt.It is common today to use control devices for ink supply on printing machines. Data about the condition of the printed image must be recorded and compared with target data that were previously recorded. The device for carrying out these methods generally contain a densitometric measuring system, a computer system for recording and evaluating the data and color metering devices which are remotely adjustable. These systems are very complex since, for example, the densitometric measuring devices are built as automatic and motor-operated densitometers. In addition, a special print control bar must be provided on each print sheet, which contains measurement fields that the computer system needs for evaluating the print quality.

Bei gleichbleibend hoher Güte der Farbregelung stellt sich also die Aufgabe, ein Verfahren und eine Vorrichtung für die Erfassung von Daten für die Regelung der Farbzufuhr zu schaffen, in denen der maschinelle Aufwand erheblich reduziert und außerdem die Kosten für die Anbringung spezieller Druckkontrolleisten eingespart werden, wobei aber die Datenerfassung weiterhin sicher durchführbar sein soll.With a consistently high quality of the color control, the task is to create a method and a device for the acquisition of data for the control of the ink supply, in which the mechanical outlay is considerably reduced and, moreover, the costs for the installation of special pressure control operators are saved, whereby but the data acquisition should still be able to be carried out safely.

Die Lösung dieser Aufgabe ergibt sich aus dem Kennzeichen des Anspruchs 1. Eine vorteilhafte Ausgesaltung einer Vorrichtung ist im Anspruch 2 und den weiteren Unteransprüchen angegeben.
Das geschilderte Verfahren und die zugehörige Vorrichtung haben den Vorteil, daß aufwendige Meßanlagen für die Datenerfassung nicht mehr notwendig sind. Mit dem flexibel anwendbaren Handdensitometer bzw. Handspektralphotometer ist es möglich, beliebig auf einem Druckbogen Daten abzunehmen. Die mit dem Densitometer bzw. Spektralphotometer zusammenarbeitende Anzeigeeinrichtung stellt dabei sicher, daß die Daten an der richtigen Stelle, auch zum richtigen Zeitpunkt und auch in datentechnisch sauberer Art und Weise erfaßt werden. Damit sind keine speziellen Druckkontrolleisten mehr für die Regelung der Farbzufuhr notwendig. Außerdem ist das eingesetzte Densitometer bzw. Spektralphotometer auch für spezielle Messungen in nicht bei der Farbregelung verwendeten Bereichen zu benützen.This object is achieved from the characterizing part of claim 1. An advantageous embodiment of a device is specified in claim 2 and the further subclaims.
The described method and the associated device have the advantage that complex measuring systems for data acquisition are no longer necessary. With the flexibly applicable hand-held densitometer or hand-held spectrophotometer, it is possible to take any data on a printed sheet. The display device working together with the densitometer or spectrophotometer ensures that the data is in the right place, also at the right time and also be recorded in a technically clean manner. This eliminates the need for special pressure control officers to control the ink supply. In addition, the densitometer or spectrophotometer used can also be used for special measurements in areas not used for color control.

Das Verfahren und die Vorrichtung werden im Folgenden anhand von Figuren näher beschrieben.The method and the device are described in more detail below with reference to figures.

Im einzelnen zeigen:

  • Fig. 1 einen Druckbogen mit Bildzonen,
  • Fig. 2 das System zur Bildzonendefinition,
  • Fig. 3 das System zum Betrieb des Handdensitometers und
  • Fig. 4 einen Handdensitometer mit Anzeigeeinrichtung.
In detail show:
  • 1 is a printed sheet with image zones,
  • 2 the system for image zone definition,
  • Fig. 3 shows the system for operating the manual densitometer and
  • Fig. 4 shows a manual densitometer with a display device.

In Fig. 1 ist das Schema eines Druckbogens dargestellt, wie er in der Realität vorkommen kann. Hierbei sind in verschiedenen Feldern unter­schiedliche Druckmuster angeordnet. Z.B. könnte ein Teil der Druck­fläche mit Text und ein anderer Teil mit Bildern belegt sein. Häufig ist der Aufbau eines solchen Satzes spaltenförmig angeordnet. Im Extremfall ist ein Druckbogen in beispielsweise 8 oder 16 gleich große Felder unterteilt und damit auch in 4 oder 8 gleich breite Spalten zu unterteilen. Im gezeigten Schema sind die auftretenden Spalten mit A, B und C bezeichnet. Bei der Farbzufuhr im Farbwerk einer Druckmaschine kann nun diese Aufteilung berücksichtigt werden, daher wurde vorge­schlagen, die Druckfläche in Zonen, die in Längsrichtung des Bogens parallel nebeneinander liegen, zu unterteilen. Die Bildzonen A, B und C können zur Farbregelung verwendet werden.In Fig. 1, the diagram of a printed sheet is shown as it can occur in reality. Different print patterns are arranged in different fields. E.g. part of the print area could be covered with text and another part with pictures. The structure of such a set is often arranged in columns. In an extreme case, a printed sheet is subdivided into, for example, 8 or 16 equally large fields and thus also into 4 or 8 equally wide columns. In the diagram shown, the columns that appear are labeled A, B and C. When dividing the ink in the inking unit of a printing press, this division can now be taken into account, so it has been proposed to divide the printing area into zones which are parallel to one another in the longitudinal direction of the sheet. Image zones A, B and C can be used for color control.

In Fig. 2 ist die Einrichtung schematisch dargestellt, mit der die Definition der Bildzonen durchgeführt werden kann. Hierin ist ein Rechner 1 vorhanden, der Datenverarbeitungsaufgaben und Organisa­ tionsaufgaben übernimmt. An den Rechner 1 ist ein Bildzonenspeicher 2 angeschlossen. Der Bildzonenspeicher 2 steht wiederum mit einer Ein­gabeeinrichtung 3 in Verbindung. In der Eingabeeinrichtung 3 ist es möglich zu definieren, an welchen Positionen eines Druckbogens Be­grenzungen für Bildzonen gesetzt werden sollen. Dies kann z.B. über die an Farbregelanlagen vorhandene Tastatur parallel zu einem aufge­legten Druckbogen geschehen. Es ist aber auch möglich dazu visuelle Hilfsmittel eines Personal-Comuters zu verwenden, auf dessen Bild­schirm den Bildzonen angepaßte Markierungen zu erzeugen sind. Bei­spielsweise wird das durch Symbole für Farbdosierelemente, ent­sprechend der Anordnung innerhalb der Druckmaschine, gemacht. Mit dem Rechner 1 ist weiterhin eine Datenerfassungseinrichtung 4 verbunden, deren Daten in einem Bilddatenspeicher 5 abgelegt werden. Der Rechner ist schließlich über einen Datenbus 6 mit einer Vielzahl von Farb­dosiereinheiten 7 verbunden. Der Rechner 1 stellt demnach die Ver­bindung zum einen zwischen dem Bildzonenspeicher und den Farbdosier­einheiten und zum anderen auch zwischen den Bilddaten und den Farb­dosiereinheiten her. Das geschieht in der Form, daß beim Regeln einer bestimmten Bildzone, z.B. Bildzone B der Rechner 1 aufgrund seiner Verbindung zum Bildzonenspeicher 2 nur die Farbdosiereinheiten 7 an­steuert, die auch zur Bildzone B gehören. Weiterhin werden die Bild­daten, die durch die Messung mit der Datenerfassungseinrichtung 4 gewonnen werden, im Bilddatenspeicher 5 auf die jeweilige Bildzone bezogen abgedeckt. Dazu ist der Rechner 1 in der Lage, da er immer die Bildzonenzuordnung im Bildzonenspeicher abfragen kann.2 schematically shows the device with which the definition of the image zones can be carried out. A computer 1 is present therein, which performs data processing tasks and organizing tasks. An image zone memory 2 is connected to the computer 1. The image zone memory 2 is in turn connected to an input device 3. In the input device 3 it is possible to define at which positions of a printing sheet limits for image zones are to be set. This can be done, for example, using the keyboard on color control systems parallel to a printed sheet. However, it is also possible to use visual aids from a personal computer on whose screen markings adapted to the image zones are to be generated. For example, this is done by symbols for ink metering elements, according to the arrangement within the printing press. A data acquisition device 4, whose data are stored in an image data memory 5, is also connected to the computer 1. Finally, the computer is connected to a multiplicity of color metering units 7 via a data bus 6. The computer 1 accordingly establishes the connection on the one hand between the image zone memory and the color metering units and on the other hand also between the image data and the color metering units. This is done in such a way that when regulating a certain image zone, for example image zone B, the computer 1, because of its connection to the image zone memory 2, only controls the color metering units 7 which also belong to the image zone B. Furthermore, the image data obtained by the measurement with the data acquisition device 4 are covered in the image data memory 5 in relation to the respective image zone. The computer 1 is able to do this since it can always query the image zone assignment in the image zone memory.

Die Erfassung der Bilddaten erfolgt durch eine Anordnung, wie sie in Fig. 3 dargestellt ist. Dazu ist der Rechner 1, wie geschildert, mit dem Bildzonenspeicher 2 und dem Bilddatenspeicher 5 verbunden. Die Datenerfassungseinrichtung 4 besteht aus einem Densitometer 8 und einer Anzeigeeinrichtung 9, 10. Innerhalb des Rechners 1 ist zusätz­lich eine Auswerteeinheit 11 vorgesehen. Sie ist mit der Anzeigeein­richtung 10 und dem Densitometer 8 verbunden.The image data is acquired by an arrangement as shown in FIG. 3. For this purpose, the computer 1, as described, is connected to the image zone memory 2 and the image data memory 5. The data acquisition device 4 consists of a densitometer 8 and a display device 9, 10. An evaluation unit 11 is additionally provided within the computer 1. It is connected to the display device 10 and the densitometer 8.

Bei der Datenerfassung, respektive bei der Messung von Farbdichte­werten, wird mit der Anordnung in folgender Weise verfahren: Nachdem der Rechner zur Messung von Bilddaten intialisiert wurde, gibt er an der Anzeigeeinrichtung 9 die Messung frei. Mit Hilfe von Leuchtdioden kann eine Bereitschaftsanzeige erzeugt werden. Gleichzeitig wird an­hand der Auswerteeinrichtung 11 die Zuordnung zur jeweiligen Bildzone in der Anzeigeeinrichtung 10 dargestellt. Dies kann eine Digitalan­zeige sein. Damit kann der Drucker sofort ersehen, ob das Densitometer bereit ist und in welcher Bildzone er messen soll. Nachdem der-Drucker gemessen hat, werden die Daten in die Auswerteeinrichtung 11 über­tragen und auf Plausiblität sowie Vollständigkeit überprüft. Während der Messung zeigt im übrigen die Anzeigeeinrichtung 9 an einer ihrer Leuchtdioden an, daß das Densitometer jetzt für andere Arbeiten ge­sperrt ist. Die in die Auswerteeinrichtung 11 übertragenen Daten werden, wenn sie die Prüfung erfolgreich durchlaufen haben, im Bild­datenspeicher 5 auf die jeweilige Bildzone bezogen, abgelegt. Außerdem wird an die Anzeigeeinrichtung 9 wieder ein Freigabesignal gegeben, so daß sichtbar wird, daß das Densitometer für andere Arbeiten wieder frei ist. Schließlich wird an der Anzeigeeinrichtung 10 in der Digi­talanzeige die Bildzone auf die nächste, innerhalb eines vorgegebenen Meßzyklus festgelegte Bildzone umgeschaltet. Damit kann die Datener­fassung für die nächste Bildzone vorgenommen werden.The arrangement is carried out in the following manner for data acquisition or for the measurement of color density values: After the computer for measuring image data has been initialized, it releases the measurement on the display device 9. A readiness display can be generated with the help of LEDs. At the same time, the assignment to the respective image zone is shown in the display device 10 using the evaluation device 11. This can be a digital display. This enables the printer to immediately see whether the densitometer is ready and in which image zone it should measure. After the printer has measured, the data are transmitted to the evaluation device 11 and checked for plausibility and completeness. During the measurement, the display device 9 shows on one of its LEDs that the densitometer is now blocked for other work. When they have successfully passed the test, the data transferred to the evaluation device 11 are stored in the image data memory 5 in relation to the respective image zone. In addition, a release signal is again given to the display device 9, so that it can be seen that the densitometer is free again for other work. Finally, on the display device 10 in the digital display, the image zone is switched to the next image zone defined within a predetermined measuring cycle. This enables data acquisition for the next image zone.

Anstatt eines Densitometers kann für die Datenerfassungseinrichtung selbstverständlich auch ein Spektralphotometer verwendet werden. Hierzu sind lediglich die Auswertealgorythmen im Rechner 1 ent­sprechend anders zu gestalten.Instead of a densitometer, a spectrophotometer can of course also be used for the data acquisition device. For this purpose, only the evaluation algorithms in computer 1 have to be designed differently.

In Fig. 4 ist ein für die Datenerfassung geeignetes Handdensitometer 12 dargestellt. Es besteht aus einem schwenkbaren Meßkopf 13 und einem Fuß mit Peileinrichtung 14. Mit Hilfe der Peileinrichtung 14 kann das Densitometer an beliebigen Positionen, die ausgemessen werden sollen, freiverschiebbar aufgesetzt werden. Das Handdensitometer 12 ist über eine Datenleitung 15 mit dem Rechner 1 verbunden. Am Handdensitometer 12 bzw. am Meßkopf 13 ist eine optische Anzeige 16 angebracht. Sie kann z.B. mit Hilfe von Klammern auf den Meßkopf aufgesteckt werden oder mit Hilfe eines Gummibandes daran festgehalten werden. Sie ist daher an allen möglichen Bauformen von Densitometern einsetzbar. Die optische Anzeige ist über zwei Leitungen 17 ebenfalls mit dem Rechner 1 verbunden. In Bereitschaftsposition steht der Meßkopf 13 des Densi­tometers 12 schräg nach oben, wie dargestellt. Dabei sind die An­zeigeeinrichtungen 9, 10 auf der optischen Anzeige gut sichtbar. Der Rechner 1 steuert die Leuchtdioden 9 bzw. die Digitalanzeige 10 so an, daß das Bedienungspersonal direkt über die vorzunehmenden bzw. mög­lichen Bedienungshandlungen informiert ist. Beim Niederdrücken des Meßkopfes 13, d.h. bei der Ausmessung einer bedruckten Stelle hin­sichtlich ihrer Farbdichtewerte werden die Leuchtdioden 9 so geschal­tet, daß einerseits durch Aufleuchten einer Leuchtdiode in rot darge­stellt wird, daß das Densitometer momentan mit einer Messung beschäf­tigt ist. Derweil ist eine zweite Leuchtdiode nicht beleuchtet. Wenn die Daten in den Rechner 1 übertragen sind und dort geprüft worden sind, leuchtet die zweite Leuchtdiode entweder mit rotem Blinklicht oder in grün. Rotes Blinklicht bedeutet Fehlmessung bzw. unvoll­ständige Datenübertragung und grünes Licht bedeutet die Messung war in Ordnung und der Meßvorgang kann weitergehen. Danach wird auch die erste Leuchtdiode wieder auf grün geschaltet. Gleichzeitig wird eine Digitalanzeige, wie bereits beschrieben, die in der vorher festge­legten Meßfolge bestimmten nächsten Bildzone angezeigt, mit ihrem Buchstaben oder ihrer numerischen Reihenfolge. Die Bedienungsanzeige am Densitometer ist also bezüglich ihrer Verschaltung vom Densitometer unabhängig und dient lediglich zur konkreten und schnellen präzisen Information des Bedienungspersonals am Meßort.4 shows a hand-held densitometer 12 suitable for data acquisition. It consists of a swiveling measuring head 13 and a foot with a direction finder 14. With the help of the direction finder 14, the densitometer can be placed freely at any position that is to be measured. The manual densitometer 12 is connected to the computer 1 via a data line 15. On the hand densitometer 12 or on the measuring head 13, an optical display 16 is attached. It can, for example, be attached to the measuring head with the aid of clips or held onto it with the aid of a rubber band. It can therefore be used on all possible types of densitometers. The optical display is also connected to the computer 1 via two lines 17. In the standby position, the measuring head 13 of the densitometer 12 is inclined upwards, as shown. The display devices 9, 10 are clearly visible on the optical display. The computer 1 controls the light-emitting diodes 9 or the digital display 10 in such a way that the operating personnel are informed directly about the operating actions to be carried out or possible. When the measuring head 13 is depressed, ie when a printed area is measured with regard to its color density values, the light-emitting diodes 9 are switched such that on the one hand a light-emitting diode lights up in red to indicate that the densitometer is currently busy with a measurement. Meanwhile, a second light emitting diode is not illuminated. When the data has been transferred to the computer 1 and checked there, the second LED either lights up with a red flashing light or in green. Flashing red light means incorrect measurement or incomplete data transmission and green light means the measurement was OK and the measuring process can continue. Then the first LED is switched to green again. At the same time, as already described, a digital display shows the next image zone determined in the previously determined measurement sequence, with its letter or its numerical order. The operating display on the densitometer is therefore independent of the densitometer in terms of its connection and is only used for the precise and precise information of the operating personnel at the measuring location.

Die beschriebenen Abläufe sind für die Rationalisierung und Verein­fachung von Farbregelanlagen gedacht. Hierbei fallen insbesonders aufwendige automatische Farbmeßeinrichtungen weg. Außerdem kann mit dem freipositionierbaren Handdensitometer 12 an beliebigen Stellen innerhalb des Druckbogens X gemessen werden. Selbstverständlich muß der Farbkontrollstreifen nicht weggelassen werden, sondern man kann mit Hilfe des Handdensitometers natürlich auch an ausgewählten Farb­meßfeldern innerhalb des Farbkontrollstreifens Messungen durchführen. Weiterhin ist es allerdings möglich, das Densitometer auch zur Aus­messung von bestimmten, für den Drucker aus seiner Erfahrung heraus als kritisch bekannten Stellen zu benutzen. Die Art der Anzeige ist nicht auf die beschriebene optische Anzeige 16 mit Leuchtdioden 9 und Digitalanzeige 10 beschränkt. Hier sind z.B. auch akustische Anzeige­vorrichtungen denkbar.The processes described are intended for the rationalization and simplification of color control systems. In particular, complex automatic color measuring devices are eliminated. In addition, the freely positionable hand densitometer 12 can be used to measure anywhere in the printed sheet X. Of course must the color control strip can not be omitted, but measurements can of course also be carried out on selected color measuring fields within the color control strip using the hand densitometer. However, it is also possible to use the densitometer to measure certain points that the printer knows from his experience as critical. The type of display is not limited to the optical display 16 described with light-emitting diodes 9 and digital display 10. Here, for example, acoustic display devices are also conceivable.

BezugszeichenlisteReference symbol list

  • 1 Rechner1 calculator
  • 2 Bildzonenspeicher2 image zone memories
  • 3 Eingabeeinrichtung3 input device
  • 4 Datenerfassungseinrichtung4 data acquisition device
  • 5 Bilddatenspeicher5 image data storage
  • 6 Datenbus6 data bus
  • 7 Farbdosiereinheiten7 color dosing units
  • 8 Densitometer8 densitometers
  • 9 Anzeigeeinrichtung (Leuchtdiode)9 display device (light-emitting diode)
  • 10 Anzeigeeinrichtung (Digitalanzeige)10 display device (digital display)
  • 11 Auswerteeinheit11 evaluation unit
  • 12 Handdensitometer12 manual densitometers
  • 13 Meßkopf13 measuring head
  • 14 Peileinrichtung14 direction finder
  • 15 Datenleitung15 data line
  • 16 Optische Anzeige16 Optical display
  • 17 Leitung17 line
  • X DruckbogenX printed sheets
  • A BildzoneA image zone
  • B BildzoneB image zone
  • C BildzoneC image zone

Claims (6)

1. Verfahren zum Erfassen von Daten eines Druckbildes für die Regelung der Farbzufuhr in Druckmaschinen unter Verwendung eines Densitometers zur Erzeugung der Daten, eines Speichers für die Sammlung der Daten oder Spektralphotometers und eines Rechners für die Auswertung der Daten zur Ansteuerung einer zonal aufgeteilten Farbdosiereinrichtung,
dadurch gekennzeichnet,
daß das Druckbild entsprechend seinem Aufbau in Bildzonen aufge­teilt wird, deren jede sich über unterschiedlich viele Zonen der Farbdosiereinrichtung erstrecken kann und daß die Bildzonendaten in einem Bildzonenspeicher (2) abgelegt werden, daß im Bildbereich jeder Bildzone mit deren Densitometer bzw. Sepktalphotometer Farbdichtewerte gemessen werden, daß die so gewonnenen Daten dem Rechner (1) übergeben werden, der sie auf Vollständigkeit und Richtigkeit überprüft, daß die Daten bei erfolgreicher Prüfung in einem Bilddatenspeicher (5) abgelegt, das Densitometer bzw. Spek­tralphotometer für die nächste Messung freigegeben und der nächste Schritt innerhalb eines Meßzyklus angegeben wird, oder daß bei nicht erfolgreicher Prüfung der Daten eine Fehlermeldung ausge­geben und das Densitometer noch einmal für den gleichen Schritt im Meßzylkus freigegeben wird.1. Method for acquiring data of a print image for regulating the ink supply in printing presses using a densitometer for generating the data, a memory for collecting the data or spectrophotometer and a computer for evaluating the data for controlling a zonally divided color metering device,
characterized by
that the printed image is divided into image zones according to its structure, each of which can extend over different zones of the color metering device and that the image zone data are stored in an image zone memory (2), that color density values are measured in the image area of each image zone with their densitometer or septal photometer, that the data obtained in this way are transferred to the computer (1), which checks them for completeness and correctness, that the data are stored in an image data memory (5) when the test is successful, the densitometer or spectrophotometer is released for the next measurement and the next step within a measuring cycle is specified, or that if the data is not checked successfully, an error message is issued and the densitometer is released again for the same step in the measuring cycle. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1,
dadurch gekennzeichnet,
daß dem Rechner (1) ein Bildzonenspeicher (2) vorgeschaltet ist, der mit einer Eingabeeinrichtung (3) zur Definition der Bildzonen verbunden ist, daß der Rechner (1) weiterhin mit einer Datenerfas­sungseinrichtung (4) zum Einlesen der Bilddaten und mit einem Bilddatenspeicher (5) zum Aufnehmen dieser Daten verbunden ist, daß der Rechner (1) mit einer Anzeigeeinrichtung (9, 10) zur Kennzeichnung des Betriebszustandes der Datenerfassungseinrichtung (4) verbunden ist und daß der Rechner (1) über einen Datenbus (6) eine Vielzahl von zonalen Farbosiereinheiten (7) steuert.2. Device for carrying out the method according to claim 1,
characterized by
that an image zone memory (2) is connected upstream of the computer (1), which is connected to an input device (3) for defining the image zones, that the computer (1) is also connected to a data acquisition device (4) for reading in the image data and to an image data memory (5) for recording this data, that the computer (1 ) is connected to a display device (9, 10) for identifying the operating state of the data acquisition device (4) and that the computer (1) controls a plurality of zonal color metering units (7) via a data bus (6). 3. Vorrichtung nach Anspruch 2
dadurch gekennzeichnet,
daß als Datenerfassungseinrichtung (4) ein Handdensitometer oder ein Handspektalphotometer verwendet wird, das über eine Daten­leitung (15) mit dem Rechner (1) verbunden ist.3. Device according to claim 2
characterized by
that a handheld densitometer or a handheld spectrophotometer is used as the data acquisition device (4), which is connected to the computer (1) via a data line (15). 4. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß die Eingabeeinrichtung (3) zur Definition der Bildzonen ein Personal-Computer oder ein Abmusterungstisch mit Steuerein­richtungen für jede Farbdosiereinheit ist.4. The device according to claim 2,
characterized by
that the input device (3) for defining the image zones is a personal computer or a matching table with control devices for each color metering unit. 5. Vorrichtung nach Anspruch 2 und 3,
dadurch gekennzeichnet,
daß die Anzeigeeinrichtung (9, 10) für den Betriebszustand der Datenerfassungseinrichtung (4) eine optische Anzeigeeinheit aus Leuchtdioden (9) für die Anzeige der die Datenerfassung und -über­tragung betreffenden Signale und als Digitalanzeige (10) zur An­gabe einer Bezeichnung für die zu messende Bildzone besteht.5. The device according to claim 2 and 3,
characterized by
that the display device (9, 10) for the operating state of the data acquisition device (4) is an optical display unit made of light-emitting diodes (9) for displaying the signals relating to data acquisition and transmission and as a digital display (10) for specifying a designation for the image zone to be measured consists. 6. Vorrichtung nach Anspruch 5,
dadurch gekennzeichnet,
daß die Anzeigeeinrichtung (9, 10) als Vorsetzeinheit an jedem handelsüblichen Handdensitometer (12) oder Spektralphotometer montierbar, aber selbständig mit dem Rechner (1) verbunden ist.6. The device according to claim 5,
characterized by
that the display device (9, 10) can be mounted as an attachment unit on any commercially available hand-held densitometer (12) or spectrophotometer, but is independently connected to the computer (1).
EP89113667A 1988-08-30 1989-07-25 Data reading unit for an ink control devices Expired - Lifetime EP0356705B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89113667T ATE96093T1 (en) 1988-08-30 1989-07-25 DATA COLLECTION FOR COLOR CONTROL SYSTEMS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3829341 1988-08-30
DE3829341A DE3829341A1 (en) 1988-08-30 1988-08-30 DATA COLLECTION FOR COLOR CONTROL SYSTEMS

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EP0356705A2 true EP0356705A2 (en) 1990-03-07
EP0356705A3 EP0356705A3 (en) 1991-05-08
EP0356705B1 EP0356705B1 (en) 1993-10-20

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ID=6361856

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Application Number Title Priority Date Filing Date
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Country Status (6)

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US (1) US5014618A (en)
EP (1) EP0356705B1 (en)
JP (1) JP2728139B2 (en)
AT (1) ATE96093T1 (en)
DE (2) DE3829341A1 (en)
ES (1) ES2046392T3 (en)

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JP3062167B2 (en) * 1998-11-20 2000-07-10 株式会社東京機械製作所 Plate mounting position indicating device
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Also Published As

Publication number Publication date
EP0356705A3 (en) 1991-05-08
JPH02106379A (en) 1990-04-18
ES2046392T3 (en) 1994-02-01
DE3829341A1 (en) 1990-03-08
DE58905948D1 (en) 1993-11-25
JP2728139B2 (en) 1998-03-18
ATE96093T1 (en) 1993-11-15
EP0356705B1 (en) 1993-10-20
US5014618A (en) 1991-05-14

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