EP0356705B1 - Data reading unit for an ink control devices - Google Patents
Data reading unit for an ink control devices Download PDFInfo
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- EP0356705B1 EP0356705B1 EP89113667A EP89113667A EP0356705B1 EP 0356705 B1 EP0356705 B1 EP 0356705B1 EP 89113667 A EP89113667 A EP 89113667A EP 89113667 A EP89113667 A EP 89113667A EP 0356705 B1 EP0356705 B1 EP 0356705B1
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- 238000005259 measurement Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 10
- 238000011156 evaluation Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000012512 characterization method Methods 0.000 claims 1
- 238000013481 data capture Methods 0.000 claims 1
- 238000012546 transfer Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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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
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- 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 and a device for carrying out the method according to the preamble of claim 2.
- 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.
- EP 0 228 347 A1 A color application control in a printing press by means of an automatically movable measuring head which scans a control strip which is also printed, and the acquisition of measurement data by means of a freely movable manual measuring head is known from EP 0 228 347 A1.
- EP 0 255 924 A2 also describes the possibility of obtaining measured values directly in the image, a hand-held measuring device (densitometer) being used. To avoid waste, the printing of an extra print control strip is avoided.
- EP 0 136 520 A3 describes a device for recording densitometric values from a pressure control strip using a manual densitometer. To the location of the Measured measuring fields are to be determined, in particular below the support table, absolute position sensors, the signals of which are evaluated in addition to the actual measuring signals of the densitometer.
- the present invention is therefore based on the object of developing a method and a device according to the respective preamble of claims 1 and 2 in such a way that the quality of the color control remains the same, so that the mechanical outlay is considerably reduced and the installation of special pressure control officers can be dispensed with, but the data acquisition should still be able to be carried out safely.
- the described method and the associated device have the advantage that complex measuring systems for data acquisition are no longer necessary.
- 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.
- the densitometer or spectrophotometer used can also be used for special measurements in areas not used for color control.
- 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 handles data processing and organizational tasks takes over.
- 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.
- 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 in such a way 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
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung nach dem Oberbegriff von Anspruch 1 sowie eine Vorrichtung zur Durchführung des Verfahrens gemäß dem Oberbegriff von Anspruch 2.The invention relates to a method and a device according to the preamble of
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 in each case 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.
Eine Farbauftragssteuerung bei einer Druckmaschine mittels automatisch bewegbaren Meßkopf, der einen mitgedruckten Kontrollstreifen abtastet, sowie die Gewinnung von Meßdaten mittels frei beweglichen Handmeßkopf ist aus der EP 0 228 347 A1 bekannt. Die EP 0 255 924 A2 beschreibt ebenfalls die Möglichkeit der Meßwertgewinnung direkt im Bild, wobei ein Handmeßgerät (Densitometer) Verwendung findet. Zur Vermeidung von Makulatur wird auf den Mitdruck eines Extra-Druckkontrollstreifens verzichtet. Die EP 0 136 520 A3 beschreibt eine Einrichtung zum Aufnehmen densitometrischer Werte von einem Druckkontrollstreifen mittels eines Handdensitometers. Um die Lage der ausgemessenen Meßfelder zu bestimmen sind insbesondere unterhalb des Auflagetisches Absolut-Positionsgeber vorgesehen, deren Signale neben den eigentlichen Meßsignalen des Densitometers rechnerisch ausgewertet werden.A color application control in a printing press by means of an automatically movable measuring head which scans a control strip which is also printed, and the acquisition of measurement data by means of a freely movable manual measuring head is known from EP 0 228 347 A1. EP 0 255 924 A2 also describes the possibility of obtaining measured values directly in the image, a hand-held measuring device (densitometer) being used. To avoid waste, the printing of an extra print control strip is avoided. EP 0 136 520 A3 describes a device for recording densitometric values from a pressure control strip using a manual densitometer. To the location of the Measured measuring fields are to be determined, in particular below the support table, absolute position sensors, the signals of which are evaluated in addition to the actual measuring signals of the densitometer.
Der vorliegenden Erfindung liegt somit die Aufgabe zugrunde, bei gleichbleibend hoher Güte der Farbregelung ein Verfahren sowie eine Vorrichtung gemäß dem jeweiligen Oberbegriff von Anspruch 1 bzw. 2 derartig weiterzubilden, so daß der maschinelle Aufwand erheblich reduziert und auf die Anbringung spezieller Druckkontrolleisten verzichtet werden kann, wobei aber die Datenerfassung weiterhin sicher durchführbar sein soll.The present invention is therefore based on the object of developing a method and a device according to the respective preamble of
Gelöst wird diese Aufgabe verfahrensmäßig durch Anspruch 1 und vorrichtungsmäßig durch Anspruch 2.This object is achieved procedurally by
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.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.
- Fig. 1
- a printed sheet with image zones,
- Fig. 2
- the image zone definition system,
- Fig. 3
- the system for operating the manual densitometer and
- Fig. 4
- a hand-held densitometer with 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 Organisationsaufgaben 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
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
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
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
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
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
- 11
- Rechnercomputer
- 22nd
- BildzonenspeicherImage zone memory
- 33rd
- EingabeeinrichtungInput device
- 44th
- DatenerfassungseinrichtungData acquisition device
- 55
- BilddatenspeicherImage data storage
- 66
- DatenbusData bus
- 77
- FarbdosiereinheitenColor dosing units
- 88th
- DensitometerDensitometer
- 99
- Anzeigeeinrichtung (Leuchtdiode)Display device (light emitting diode)
- 1010th
- Anzeigeeinrichtung (Digitalanzeige)Display device (digital display)
- 1111
- AuswerteeinheitEvaluation unit
- 1212
- HanddensitometerHandheld densitometer
- 1313
- MeßkopfMeasuring head
- 1414
- PeileinrichtungDF device
- 1515
- DatenleitungData line
- 1616
- Optische AnzeigeOptical display
- 1717th
- Leitungmanagement
- XX
- DruckbogenPrinted sheet
- AA
- BildzoneImage zone
- BB
- BildzoneImage zone
- CC.
- BildzoneImage zone
Claims (6)
- Process for capturing data of a printed image for the control of ink feed in printing presses in which, by means of a photoelectric measuring device, data are generated, stored in a store and evaluated in a calculator for control of a zonally divided ink metering unit, characterised in that the printed image is divided corresponding to its make-up into image zones and this division is stored, wherein each image zone can extend over a differing number of zones of the ink metering device then in the image region of each image zone, data are captured by means of a photoelectric hand measuring device that these data are checked in a calculator for completeness and correctness and on successful examination are stored and the measuring device thereafter freed for a next measurement and on non-successful examination the repeat of a measurement is permitted, and that the control in the zones for each image zone takes place correspondingly to the measured value captured in the image zones.
- Apparatus for carrying out the process according to Claim 1 with an electrical measuring device for generating data, a store for storing these data as well as a calculator, by which the evaluation of the data for control of a zonally divided ink metering device takes place, characterised in that an input device (3) for the definition of freely choosable image zones is provided, which is connected with an image zone store (2) connected to the calculator (1), that via the calculator (1) as well as a data bus (6) a plurality of the zone or ink metering unit is controllable taking into account the data deposited in the image data store (5) and in the image zone store (2), and that an indicator device (9, 10) is connected with the calculator by means of which the operational condition of a photoelectric hand measuring device can be indicated.
- Apparatus according to Claim 2, characterised in that the photoelectric hand measuring device is constructed as a hand densitometer or hand spectrophotometer which is connected via a data lead (15) with the calculator (1).
- Apparatus according to Claim 2, characterised in that the checking table with the operational elements of the control device for the zonally divided ink metering unit is constructed as an input device (3) for the definition of the image zones.
- Apparatus according to Claim 2 and 3, characterised in that the indicator device (9, 10) for the operational condition of the photoelectric hand measuring device (4) has an optical indicator of light emitting diodes (9) to indicate the data capture and transfer of respective signals and a digital indicator (10) to give a characterisation of the image zone to be measured.
- Apparatus according to Claim 5, characterised in that the indicator unit (9, 10) is connected as a slave unit connected independently with the calculator (1) and which can be applied releasably to a commercially customary photoelectric hand measuring device.
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 |
---|---|---|---|
DE3829341A DE3829341A1 (en) | 1988-08-30 | 1988-08-30 | DATA COLLECTION FOR COLOR CONTROL SYSTEMS |
DE3829341 | 1988-08-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0356705A2 EP0356705A2 (en) | 1990-03-07 |
EP0356705A3 EP0356705A3 (en) | 1991-05-08 |
EP0356705B1 true EP0356705B1 (en) | 1993-10-20 |
Family
ID=6361856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89113667A Expired - Lifetime EP0356705B1 (en) | 1988-08-30 | 1989-07-25 | Data reading unit for an ink control devices |
Country Status (6)
Country | Link |
---|---|
US (1) | US5014618A (en) |
EP (1) | EP0356705B1 (en) |
JP (1) | JP2728139B2 (en) |
AT (1) | ATE96093T1 (en) |
DE (2) | DE3829341A1 (en) |
ES (1) | ES2046392T3 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4413736C2 (en) * | 1994-04-20 | 1997-12-18 | Heidelberger Druckmasch Ag | Process for checking the wear of a printing form in a printing press |
DE19516352A1 (en) * | 1995-05-04 | 1996-11-07 | Heidelberger Druckmasch Ag | Image inspection device |
DE19516354A1 (en) * | 1995-05-04 | 1996-11-07 | Heidelberger Druckmasch Ag | Process for image inspection and color guidance on print products of a printing press |
US5791249A (en) * | 1997-03-27 | 1998-08-11 | Quad/Tech, Inc. | System and method for regulating dampening fluid in a printing press |
US5967049A (en) * | 1997-05-05 | 1999-10-19 | Quad/Tech, Inc. | Ink key control in a printing press including lateral ink spread, ink saturation, and back-flow compensation |
US6318260B1 (en) | 1997-05-05 | 2001-11-20 | Quad/Tech, Inc. | Ink key control in a printing press including lateral ink spread, ink saturation, and back-flow compensation |
JP3062167B2 (en) * | 1998-11-20 | 2000-07-10 | 株式会社東京機械製作所 | Plate mounting position indicating device |
DE10117713B4 (en) * | 2000-04-25 | 2017-05-24 | Heidelberger Druckmaschinen Ag | Printing machine with controlled adjustment control |
US6947153B1 (en) | 2000-11-20 | 2005-09-20 | Presstek, Inc. | Method and apparatus for optimized image processing |
US7032508B2 (en) * | 2003-03-21 | 2006-04-25 | Quad/Tech, Inc. | Printing press |
DE102004014498A1 (en) * | 2004-03-25 | 2005-10-13 | Man Roland Druckmaschinen Ag | Printed substrate`s print quality e.g. color density, checking method, involves measuring each part of substrate with respect to measured print quality of respective parts, and concluding quality based on measurements of parts |
JP4583803B2 (en) * | 2004-04-28 | 2010-11-17 | サカタインクス株式会社 | Method for determining printing density and printing plate used therefor |
DE102004021601B4 (en) * | 2004-05-03 | 2020-10-22 | Heidelberger Druckmaschinen Ag | Inline measurement and control for printing machines |
DE102008041427B4 (en) | 2008-08-21 | 2013-09-19 | Koenig & Bauer Aktiengesellschaft | Method for automatic color control in a running printing process within a printing press |
DE102008041430B4 (en) * | 2008-08-21 | 2011-12-08 | Koenig & Bauer Aktiengesellschaft | Method for checking at least one measured value determined in a running printing process of a printing machine for its plausibility |
JP6503723B2 (en) * | 2014-12-12 | 2019-04-24 | 富士ゼロックス株式会社 | Printing apparatus, printing method, printing program, and method of manufacturing printed matter |
US10919290B2 (en) * | 2016-02-03 | 2021-02-16 | Hangzhou Cron Machinery & Electronics Co., Ltd. | Digital ink duct for a press, digital ink supply system and application method thereof |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3958509A (en) * | 1974-06-13 | 1976-05-25 | Harris Corporation | Image scan and ink control system |
DE2727426B2 (en) * | 1977-06-18 | 1981-04-30 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Device for controlling the ink supply of a sheet-fed offset printing machine |
DE2728738B2 (en) * | 1977-06-25 | 1979-05-10 | Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach | Eulrichtung for checking and regulating the coloring on printing machines |
US4180741A (en) * | 1978-06-07 | 1979-12-25 | Harris Corporation | Apparatus for determining image areas for printing with calibration |
JPS57126028U (en) * | 1981-01-30 | 1982-08-06 | ||
DD200665A1 (en) * | 1981-07-28 | 1983-06-01 | Wolfgang Arnold | PROCESS FOR ADJUSTING THE COLOR DOSING OF PRINTING MACHINES |
DE3232577A1 (en) * | 1981-09-12 | 1983-03-31 | Dainippon Screen Manufacturing Co., Ltd., Kyoto | METHOD AND DEVICE FOR MEASURING COLOR CONCENTRATION IN PRINTED PRODUCTS |
DD212697A1 (en) * | 1982-10-26 | 1984-08-22 | Druckmaschinenwerk Planeta Rad | DISPLAY DEVICE FOR COLOR CONTROL SYSTEMS |
IT1172552B (en) * | 1983-08-25 | 1987-06-18 | Viptronic Sarl | DENSITOMETRIC SURVEYING SYSTEM ON PRINT CONTROL STRIPS |
JPS6140159A (en) * | 1984-08-01 | 1986-02-26 | Toppan Printing Co Ltd | Flat-bed proof press |
CH665390A5 (en) * | 1984-09-04 | 1988-05-13 | Digidens Ag | Colour density measuring instrument for printed material - has display for valves measured in defined zones and housing mountable directly on printing machine |
JPS61102253A (en) * | 1984-10-26 | 1986-05-20 | Dainippon Screen Mfg Co Ltd | Acquisition of printing ink supply amount and apparatus thereof |
ATE47564T1 (en) * | 1985-12-10 | 1989-11-15 | Heidelberger Druckmasch Ag | PROCEDURE FOR INK ORDER CONTROL IN A PRINTING PRESS, APPROPRIATELY EQUIPPED PRINTING SYSTEM AND MEASURING DEVICE FOR SUCH PRINTING SYSTEM. |
DE3626423A1 (en) * | 1986-08-05 | 1988-02-11 | Deutsche Forsch Druck Reprod | METHOD AND DEVICE FOR INFLUENCING THE COLOR APPEARANCE OF A COLOR AREA IN A PRINTING PROCESS |
-
1988
- 1988-08-30 DE DE3829341A patent/DE3829341A1/en not_active Withdrawn
-
1989
- 1989-07-25 DE DE89113667T patent/DE58905948D1/en not_active Expired - Fee Related
- 1989-07-25 AT AT89113667T patent/ATE96093T1/en not_active IP Right Cessation
- 1989-07-25 ES ES198989113667T patent/ES2046392T3/en not_active Expired - Lifetime
- 1989-07-25 EP EP89113667A patent/EP0356705B1/en not_active Expired - Lifetime
- 1989-08-30 US US07/400,569 patent/US5014618A/en not_active Expired - Fee Related
- 1989-08-30 JP JP1221879A patent/JP2728139B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0356705A2 (en) | 1990-03-07 |
JPH02106379A (en) | 1990-04-18 |
EP0356705A3 (en) | 1991-05-08 |
DE3829341A1 (en) | 1990-03-08 |
JP2728139B2 (en) | 1998-03-18 |
ES2046392T3 (en) | 1994-02-01 |
ATE96093T1 (en) | 1993-11-15 |
DE58905948D1 (en) | 1993-11-25 |
US5014618A (en) | 1991-05-14 |
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