EP0753409A1 - Sheet printing press - Google Patents

Sheet printing press Download PDF

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Publication number
EP0753409A1
EP0753409A1 EP96109625A EP96109625A EP0753409A1 EP 0753409 A1 EP0753409 A1 EP 0753409A1 EP 96109625 A EP96109625 A EP 96109625A EP 96109625 A EP96109625 A EP 96109625A EP 0753409 A1 EP0753409 A1 EP 0753409A1
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EP
European Patent Office
Prior art keywords
sheet
stack
measuring device
printing machine
sheets
Prior art date
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Granted
Application number
EP96109625A
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German (de)
French (fr)
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EP0753409B1 (en
Inventor
Thomas Walther
Helmut Schild
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Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Publication of EP0753409A1 publication Critical patent/EP0753409A1/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

Definitions

  • the invention relates to a sheet-fed printing machine, in particular a sheet-fed offset printing machine according to the preamble of claim 1.
  • the sheets are printed in the individual printing units and then placed on a delivery stack.
  • a control strip with individual measuring fields in the direction of sheet travel near the front edge of the sheet and extending across the sheet width.
  • This pressure control strip can then be scanned photoelectrically in order to then evaluate the remissions thus obtained (densitometric, colorimetric, spectral) for a process control or process control.
  • the method is widely used that a sheet to be measured is pulled from the stack (sample sheet removal), placed on a measuring table and scanned with a traversing measuring device which scans the pressure control strip.
  • a disadvantage of the method of scanning a print control strip described above is that an operator has to take the sample sheet, which on the one hand involves handling effort and on the other hand requires a certain arbitrariness with regard to the sample distribution of the sample sheets.
  • Measuring devices have also become known which, in particular, scan measuring fields combined in a pressure control strip within the machine, that is to say “in-line” when the machine is running. Camera systems are preferably used here.
  • a disadvantage of such devices is the relatively high expenditure for lighting and for guiding the sheet at a defined distance from the scanning optics. In large-format printing machines in particular, it is often necessary to have several camera systems side by side in order to capture the entire format width can be used, which increases the construction effort. It should also be noted that, particularly in the case of high-speed printing presses, the measuring fields, which are often very small in the sheet running direction, therefore only result in a very short measuring time, which leads to time-critical processes.
  • DE 3 108 469 C2 discloses a device for measuring ink layer thicknesses in a printing press, a so-called measuring roller being used here by means of which the sheet or its control strip deposited on a delivery stack can be scanned. So that the sheets still to be deposited do not fall onto this measuring roller during the scanning process, sheet holding devices are provided which, similarly to an automated stack change, cause the sheets to be deposited on a partial stack.
  • a pressure control strip to be scanned by the measuring roller described is also to be arranged at the rear end of the sheet in the direction of sheet travel.
  • a disadvantage here is that the sheet end is often very strongly deformed or wavy due to the tear, particularly on a blanket cylinder.
  • the above-mentioned problems with respect to waviness of the trailing edge of the sheet also result in the disadvantage that there are no defined imaging ratios across the sheet width of the sheet.
  • a photoelectric measuring device which is assigned to the front edge of the delivery stack in the direction of sheet travel and by means of which a pressure control strip which is assigned to the front edge of the sheet in the direction of sheet travel can be scanned.
  • the photoelectric measuring device is attached to a crossmember which extends over the format width of the delivery stack. Controllable gripper opening curves allow the sheets to be deposited either exactly on the stack or offset in the direction of sheet travel by a predetermined distance, so that the traversing photoelectric measuring device can scan the protruding sheet or the print control strip located thereon.
  • a disadvantage of this device is that the sheets to be scanned are placed offset to the sheet stack, which ultimately results in a stack that is not or not readily usable for further processing.
  • the object of the present invention is therefore a device according to the preamble of claim 1 in such a way that a scanning of a print control strip assigned to the leading edge of the printing sheet in the delivery stack is possible in a simple manner without the stack formation necessary for further processing being impeded.
  • a movable photoelectric measuring device on a traverse scans the print control strip on the leading edge of the sheet, during the test sheet removal holding up the subsequent and otherwise the print control strip and also the measuring device obstructing sheets.
  • An advantage of the invention is to be seen in particular in the fact that here sheet upholders are used which are provided in the machine anyway and are used for taking out the sample sheet.
  • the photoelectric measuring device can be a densitometric, colorimetric or spectrophotometric measuring device.
  • test sheets are measured after a fixed program cycle. It is particularly possible to use different measuring cycles during different process phases. During production it is possible to measure a test sheet, for example every 500 sheets. After a stopper, for example, a measuring process would have to be provided every 50 sheets. During the particularly critical phase of the machine start-up, a measuring process could have to be provided in particular every 20 sheets.
  • FIG. 1 shows the delivery 1 of a sheet-fed offset printing machine, not shown, with a stack 2 set therein.
  • the sheets are removed from a last sheet-guiding cylinder or drum via gripper systems guided on endlessly revolving chains and on the top of the stack 2 filed.
  • the stack 2 is set up on a vertically movable stack lifting plate 3, so that the upper edge of the stack 2 remains at the same height within a predetermined tolerance range.
  • the sheet pivotable front edge stops 4 are arranged in the sheet running direction, which assume a vertical orientation as shown in FIG. 1, so that the deposited sheets with their front edge result in a straight front side of the stack 2.
  • FIG. 1 and 2 show that a measuring device 8 is attached to a traverse 7 transversely to the format width of the sheets resting on the stack 2. This is moved along the extension of the cross member 7 by means of drives and conveying means which are not known and are known per se.
  • the sheet holding devices 5 are now activated, their fingers 6 being moved from the retracted position (FIG. 1) to the extended position.
  • additional stops 9 are extended, which prevent the sheets deposited on the fingers 6 of the sheet support 5 from shooting out with their front part over the front edge of the stack 2.
  • the front edge stops 4 are also moved from the upright position according to FIG. 1 to a horizontal position according to FIG. 2 panned.
  • the enumerated components are remotely actuated by pneumatically and / or electrically actuatable actuators, not shown, from a control and evaluation device explained below.
  • the sheets now resting with their front area on the fingers 6 of the sheet holder 5 form a wedge-shaped gap with the upper edge of the sheet that was completely deposited last on the stack 2, which releases the pressure control strip 10 attached to the front edge of the sheet so that the measuring device 8 can scan it .
  • FIG. 3 shows the situation according to FIG. 2 in perspective. Shown here are the extended fingers 6 of the sheet support 5, not shown, as well as the additional stops 9 extended vertically downward. The stops 9 can be seen plunging into the spaces between the individual front edge stops 4 designed as tabs. 3, a measuring process was initiated by the measuring device 8, the measuring device 8 starting the traversing process of the pressure control strip 10 from a parking position to the left of the stack 2. 3, it can also be seen how the two fingers 6 provided here according to the exemplary embodiment hold up the sheets lying thereon.
  • Fig. 4 shows again the top of the stack 2 or the sheet lying thereon with the pressure control strip 10.
  • the sheet prevented by the fingers 6, not shown in this figure, of the sheet holding-up means 5 from being placed on the top of the stack 2 is not shown here.
  • the front edge stops 4 swiveled into the horizontal position and the additional stops 9 acting on the sheet (not shown) and placed on the fingers 6 of the sheet support 5 are shown.
  • the measuring device 8 which can be moved on the crossbar 7 parallel to the direction of extension of the pressure control strip 10 is located here on the left of the stack 2 parking position.
  • the measuring device 8 always runs over the sheet or the pressure control strip 10 from the same parking position, ie after a movement from left to right via the stack 2, it returns to the previous parking position. According to the invention, however, it is provided that the Measuring device 8 each carries out a traversing process from a current parking position across the sheet format to a next parking position. A next traversing process is then carried out from this parking position. 4 shows that the current parking position of the measuring device 8 is located to the left of the stack 2.
  • sensors 11 are attached here at both ends of the crossmember 7, by means of which the presence of the measuring device can be determined. The sensors 11 are designed as proximity switches.
  • the position of the measuring device 8 is also shown in dashed lines to the right of the stack 2 when the measuring device 8 has moved from left to right after a scanning operation of the print control strip 10. A next measurement process for a next test sheet is then triggered from this dashed position.
  • Fig. 5 shows again in an enlarged manner the arrangement of the measuring device 8 movable on the crossmember 8.
  • the front edge stops 4 are here in the horizontal position, so that either a measuring process by the measuring device 8 or a known sample sheet removal process can be carried out.
  • the extended fingers 6 of the sheet support 5 (Fig. 1 to 3) are not shown here.
  • the dashed or solid arrows indicate that the measuring device 8 and / or the traverse 7 carrying the measuring device 8 can be moved in a vertical and / or horizontal manner.
  • the measuring device 8 can additionally have a device that scans the front edge of the stack 2, so that the measuring device 8 is always in one with the traverse 7 and / or the measuring device 8 that can be moved vertically and / or horizontally defined distance from the front edge of the stack 2 and also to the top of the sheet on the stack 2.
  • the distance between the measuring device 8 and the surface of the sheet to be scanned is also detected by sensor means (not shown) and regulated to a constant value by actuatable drives.
  • the measuring device 8 is supported by a roller on the top of the sheet to be scanned during the scanning process. The roll runs on an unprinted area next to the print control sterile, whereby a constant distance between measuring optics and sheet surface is achieved.
  • the measuring device 8 is designed in terms of its structure so that the under the by the fingers 6 of the sheet 5 reaching area of the measuring device 8 is as small as possible.
  • a measuring device 8 is used here, which uses light-guiding elements to bring about both the illumination and the remissions of the measuring fields of the pressure control strip 10 via light guides or the like.
  • the devices described on the basis of the description of FIGS. 1 to 5, such as the pivotable front edge stops 4, the sheet support 5 with the fingers 6, the additional stops 9, the measuring device 8 which can be moved on the crossbar 7 and the parking position of the measuring device 8 are sensors 11 connected to a control and evaluation circuit, not shown.
  • the control and evaluation circuit causes, as mentioned at the beginning, that test sheets are measured in particular in certain programmable measuring cycles, for which purpose the front edge stops 4 move from a vertical to a horizontal position, the fingers 6 of the sheet holder 5, additional stops 9 are extended and then the traversing process Measuring device 8 is initiated.
  • the control and evaluation circuit can also be provided with a manual actuating device, so that a measuring process can also be triggered manually.
  • a further actuating element can also be provided, by means of which the fingers 6 of the arch support 5 can be extended along with the stops 9 without a measuring process of the measuring device 8 being initiated. In this situation, a test sheet can then be removed from the top of the stack 2 in a manner known per se.
  • the control and evaluation circuit also reads in the measurement values obtained by the measuring device 8 during a traversing process via the pressure control strip 10.
  • the measurement values of the individual control fields accumulating from the pressure control strip 10 are stored.
  • the individual measured values are then sorted for zonal assignment.
  • an automatic adjustment of the color supply in the sense of a regulation can be initiated on the basis of predetermined target values in conjunction with the actual values recorded in this way.

Abstract

The printed sheets are deposited on top of a stack of them in the boom and have print-monitoring strips (10) at and parallel to their leading edges, whose measuring panels are scanned by a photoelectric measuring unit travelling along a cross-member. First and second stops align the sheet during the measuring operation. The second stop (9) has components (5) operated so as to hold subsequent sheets up for a predetermined period. The measuring unit (8) is inserted in the space above the sheet and below the components. The latter, which extract samples, can consist of extensible fingers at intervals over the width of the stack (2). The measuring operation can be initiated by a control and evaluation unit with sensors (11) detecting the stack side from which the measuring operation starts.

Description

Die Erfindung betrifft eine Bogendruckmaschine, insbesondere Bogenoffsetdruckmaschine gemäß dem Oberbegriff von Anspruch 1.The invention relates to a sheet-fed printing machine, in particular a sheet-fed offset printing machine according to the preamble of claim 1.

Bei Bogenoffsetdruckmaschinen werden die Bogen in den einzelnen Druckwerken bedruckt und sodann auf einem Auslegerstapel abgelegt. Dort sind insbesondere Vorderkantenanschläge angebracht, vermittels denen die in Bogenförderrichtung vorderen Kanten der Bogen in definierter Weise auf der Oberseite des Stapel zum Liegen kommen. Um den Farbauftrag in den einzelnen Druckwerken zu kontrollieren und insbesondere auch regeln zu können, ist es bekannt, in Bogenlaufrichtung nahe der Vorderkante des Bogens einen sich quer zur Formatbreite des Bogens erstreckenden Kontrollstreifen mit einzelnen Meßfeldern anzuordnen. Dieser Druckkontrollstreifen kann dann photoelektrisch abgetastet werden, um daraufhin die derartig erhaltenen Remissionen (densitometrisch, farbmetrisch, spektral) für eine Prozeßkontrolle bzw. Prozeßregelung auszuwerten. Weit verbreitet ist dabei die Methode, daß ein auszumessender Bogen aus dem Stapel gezogen wird (Probebogenentnahme), auf einem Meßtisch aufgelegt und mit einem den Druckkontrollstreifen abtastenden traversierenden Meßgerät abgetastet wird.In sheetfed offset printing machines, the sheets are printed in the individual printing units and then placed on a delivery stack. There are in particular front edge stops, by means of which the front edges of the sheets in the sheet conveying direction come to rest in a defined manner on the top of the stack. In order to be able to control the ink application in the individual printing units and, in particular, to be able to regulate it, it is known to arrange a control strip with individual measuring fields in the direction of sheet travel near the front edge of the sheet and extending across the sheet width. This pressure control strip can then be scanned photoelectrically in order to then evaluate the remissions thus obtained (densitometric, colorimetric, spectral) for a process control or process control. The method is widely used that a sheet to be measured is pulled from the stack (sample sheet removal), placed on a measuring table and scanned with a traversing measuring device which scans the pressure control strip.

Nachteilig bei der oben beschriebenen Methode des Abtastens eines Druckkontrollstreifens ist dabei, daß eine Bedienperson die Probebogenentnahme vorzunehmen hat, was zum einen mit Handhabungsaufwand verbunden und zum anderen eine gewisse Willkür hinsichtlich der Stichprobenverteilung der Probebogen bedingt. Auch sind Meßvorrichtungen bekannt geworden, welche insbesondere in einem Druckkontrollstreifen zusammengefaßte Meßfelder innerhalb der Maschine, also bei Maschinenlauf "In-line" abtasten. Vorzugsweise finden hier Kamera-Systeme Verwendung. Nachteilig bei derartigen Einrichtungen ist der relativ hohe Aufwand für Beleuchtung sowie zum Führen des Bogens in einem definierten Abstand zur Abtastoptik. Gerade bei großformatigen Druckmaschinen müssen zur Erfassung der gesamten Formatbreite oftmals auch mehrere Kamerasysteme nebeneinander eingesetzt werden, was den bautechnischen Aufwand noch erhöht. Ferner ist festzustellen, daß gerade bei schnellaufenden Druckmaschinen die in Bogenlaufrichtung oft sehr klein ausgedehnten Meßfelder somit nur eine sehr kurze Meßzeit ergeben, was zu zeitkritischen Vorgängen führt.A disadvantage of the method of scanning a print control strip described above is that an operator has to take the sample sheet, which on the one hand involves handling effort and on the other hand requires a certain arbitrariness with regard to the sample distribution of the sample sheets. Measuring devices have also become known which, in particular, scan measuring fields combined in a pressure control strip within the machine, that is to say “in-line” when the machine is running. Camera systems are preferably used here. A disadvantage of such devices is the relatively high expenditure for lighting and for guiding the sheet at a defined distance from the scanning optics. In large-format printing machines in particular, it is often necessary to have several camera systems side by side in order to capture the entire format width can be used, which increases the construction effort. It should also be noted that, particularly in the case of high-speed printing presses, the measuring fields, which are often very small in the sheet running direction, therefore only result in a very short measuring time, which leads to time-critical processes.

Aus der DE 3 108 469 C2 ist eine Vorrichtung zum Messen von Farbschichtdicken in einer Druckmaschine bekannt, wobei hier eine sogenannte Meßwalze Verwendung findet, vermittels der an einem Auslegerstapel abgelegter Bogen bzw. dessen Kontrollstreifen abgetastet werden kann. Damit die weiterhin abzulegenden Bogen nicht auf diese Meßwalze während des Tastvorganges fallen, sind Bogenhochhalter vorgesehen, welche ähnlich wie bei einem automatisierten Stapelwechsel das Ablegen der Bogen auf einem Teilstapel bewirken. Ein durch die beschriebene Meßwalze abzutastender Druckkontrollstreifen ist dabei ferner an in Bogenlaufrichtung hinterem Ende des Bogens anzuordnen. Hierbei ist als nachteilig anzusehen, daß das Bogenende durch den Abriß insbesondere an einem Gummituchzylinder oftmals sehr stark deformiert bzw. wellig ist. Neben dem in optischer Hinsicht als kompliziert anzusehenden Aufbau der Meßwalze ergibt sich aus oben genannten Problemen bezuglich Welligkeit der Bogenhinterkante dabei ferner noch der Nachteil, daß sich keine definierten Abbildungsverhältnisse über die Bogenbreite des Bogens ergeben.DE 3 108 469 C2 discloses a device for measuring ink layer thicknesses in a printing press, a so-called measuring roller being used here by means of which the sheet or its control strip deposited on a delivery stack can be scanned. So that the sheets still to be deposited do not fall onto this measuring roller during the scanning process, sheet holding devices are provided which, similarly to an automated stack change, cause the sheets to be deposited on a partial stack. A pressure control strip to be scanned by the measuring roller described is also to be arranged at the rear end of the sheet in the direction of sheet travel. A disadvantage here is that the sheet end is often very strongly deformed or wavy due to the tear, particularly on a blanket cylinder. In addition to the structure of the measuring roller, which is optically complicated, the above-mentioned problems with respect to waviness of the trailing edge of the sheet also result in the disadvantage that there are no defined imaging ratios across the sheet width of the sheet.

Aus der DE 4 207 107 C1 ist ferner eine photoelektrische Meßvorrichtung bekannt, welche in Bogenlaufrichtung der Vorderkante des Auslegerstapels zugeordnet ist und vermittels der ein in Bogenlaufrichtung der Vorderkante des Bogens zugeordneter Druckkontrollstreifen abtastbar ist. Die photoelektrische Meßvorrichtung ist dazu an einer Traverse, welche sich über die Formatbreite des Auslegerstapels erstreckt, angebracht. Durch steuerbare Greiferöffnungskurven können die Bogen entweder exakt auf dem Stapel oder aber auch in Bogenlaufrichtung um eine vorgegebene Wegstrecke versetzt abgelegt werden, so daß die traversierende photoelektrische Meßvorrichtung den überstehenden Bogen bzw. den darauf befindlichen Druckkontrollstreifen abtasten kann. Nachteilig bei dieser Vorrichtung ist dabei, daß die abzutastenden Bogen zum Bogenstapel versetzt abgelegt werden, was letztlich einen Stapel ergibt, der nicht bzw. nicht ohne weiteres für die Weiterverarbeitung nutzbar ist.From DE 4 207 107 C1 a photoelectric measuring device is also known which is assigned to the front edge of the delivery stack in the direction of sheet travel and by means of which a pressure control strip which is assigned to the front edge of the sheet in the direction of sheet travel can be scanned. For this purpose, the photoelectric measuring device is attached to a crossmember which extends over the format width of the delivery stack. Controllable gripper opening curves allow the sheets to be deposited either exactly on the stack or offset in the direction of sheet travel by a predetermined distance, so that the traversing photoelectric measuring device can scan the protruding sheet or the print control strip located thereon. A disadvantage of this device is that the sheets to be scanned are placed offset to the sheet stack, which ultimately results in a stack that is not or not readily usable for further processing.

Aufgabe der vorliegenden Erfindung ist es daher, eine Vorrichtung gemäß dem Oberbegriff von Anspruch 1 derartig weiterzubilden, daß in einfacher Weise eine Abtastung eines der Druckbogenvorderkante zugeordneten Druckkontrollstreifens im Auslegerstapel möglich ist, ohne daß die für die Weiterverarbeitung nötige Stapelbildung behindert wird.The object of the present invention is therefore a device according to the preamble of claim 1 in such a way that a scanning of a print control strip assigned to the leading edge of the printing sheet in the delivery stack is possible in a simple manner without the stack formation necessary for further processing being impeded.

Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale von Anspruch 1. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This object is achieved by the characterizing features of claim 1. Further developments of the invention result from the subclaims.

Gemäß der Erfindung ist vorgesehen, daß eine an einer Traverse verfahrbare photoelektrische Meßvorrichtung den Druckkontrollstreifen an der Bogenvorderkante abtastet, während der Probebogenentnahme dienende Hochhalter die nachfolgenden und sonst den Druckkontrollstreifen und auch die Meßvorrichtung behindernden Bogen hochhalten. Ein Vorteil der Erfindung ist insbesondere darin zu sehen, daß hier Bogenhochhalter Verwendung finden, die ohnehin in der Maschine vorgesehen sind und der Probebogenentnahme dienen. Bei der photoelektrischen Meßvorrichtung kann es sich dabei um eine densitometrische, farbmetrische oder spektralphotometrische Meßvorrichtung handeln. Bei einer erfindungsgemäß ausgebildeten Einrichtung kann vorgesehen sein, daß nach einem festen Programmzyklus Probebogen ausgemessen werden. Dabei ist es insbesondere möglich, während verschiedener Prozeßphasen unterschiedliche Meßzyklen anzuwenden. Während des Fortdruckes ist es möglich einen Probebogen beispielsweise alle 500 Bogen auszumessen. Nach einem Stopper wären beispielsweise alle 50 Bogen ein Meßvorgang vorzusehen. Während der besonders kritischen Phase des Maschinenanlaufes könnte insbesondere alle 20 Bogen ein Meßvorgang vorzusehen sein.According to the invention it is provided that a movable photoelectric measuring device on a traverse scans the print control strip on the leading edge of the sheet, during the test sheet removal holding up the subsequent and otherwise the print control strip and also the measuring device obstructing sheets. An advantage of the invention is to be seen in particular in the fact that here sheet upholders are used which are provided in the machine anyway and are used for taking out the sample sheet. The photoelectric measuring device can be a densitometric, colorimetric or spectrophotometric measuring device. In a device designed according to the invention it can be provided that test sheets are measured after a fixed program cycle. It is particularly possible to use different measuring cycles during different process phases. During production it is possible to measure a test sheet, for example every 500 sheets. After a stopper, for example, a measuring process would have to be provided every 50 sheets. During the particularly critical phase of the machine start-up, a measuring process could have to be provided in particular every 20 sheets.

Des weiteren erfolgt Erläuterung eines Ausführungsbeispiels der Erfindung anhand der Zeichnungen. Es zeigt:

Fig. 1
die erfindungsgemäße Meßvorrichtung während der normalen Bogenablage,
Fig. 2
die erfindungsgemäße Meßvorrichtung während des Abtastens eines Bogens,
Fig. 3
perspektivisch die erfindungsgemäße Meßvorrichtung während eines Meßvorganges,
Fig. 4
eine Draufsicht auf den Auslegerstapel mit der erfindungsgemäßen Meßvorrichtung, und
Fig. 5
die Ansicht der erfindungsgemäßen Meßvorrichtung im Detail.
Furthermore, an embodiment of the invention is explained with reference to the drawings. It shows:
Fig. 1
the measuring device according to the invention during normal sheet placement,
Fig. 2
the measuring device according to the invention while scanning a sheet,
Fig. 3
perspective the measuring device according to the invention during a measuring process,
Fig. 4
a plan view of the boom stack with the measuring device according to the invention, and
Fig. 5
the view of the measuring device according to the invention in detail.

Fig. 1 zeigt den Ausleger 1 einer nicht dargestellten Bogenoffsetdruckmaschine mit einem darin eingestellten Stapel 2. In an sich bekannter Weise werden hier die Bogen über an endlos umlaufenden Ketten geführten Greifersystemen von einem letzten bogenführenden Zylinder bzw. Trommel abgenommen und auf der Oberseite des Stapels 2 abgelegt. Der Stapel 2 ist auf einer vertikal verfahrbaren Stapelhubplatte 3 aufgestellt, so daß die Oberkante des Stapels 2 innerhalb eines vorgegebenen Toleranzbereiches aufder gleichen Höhe verbleibt.1 shows the delivery 1 of a sheet-fed offset printing machine, not shown, with a stack 2 set therein. In a manner known per se, the sheets are removed from a last sheet-guiding cylinder or drum via gripper systems guided on endlessly revolving chains and on the top of the stack 2 filed. The stack 2 is set up on a vertically movable stack lifting plate 3, so that the upper edge of the stack 2 remains at the same height within a predetermined tolerance range.

An der Oberkante des Stapels 2 sind in Bogenlaufrichtung der Bogen schwenkbare Vorderkantenanschläge 4 angeordnet, welche gemäß der Darstellung in Fig. 1 eine vertikale Orientierung einnehmen, so daß die abgelegten Bogen mit ihrer Vorderkante eine gerade Vorderseite des Stapels 2 ergeben. Mit den schwenkbaren Vorderkantenanschlägen 4 wirken ferner zur Probebogenentnahme sogenannte Bogenhochhalter 5 zusammen, welche ein- und ausfahrbare Finger 6 aufweisen, wobei in der Darstellung gemäß Fig. 1 diese Finger 6 sich im eingefahrenen Zustand befinden.On the upper edge of the stack 2, the sheet pivotable front edge stops 4 are arranged in the sheet running direction, which assume a vertical orientation as shown in FIG. 1, so that the deposited sheets with their front edge result in a straight front side of the stack 2. So-called sheet retainers 5, which have fingers 6 that can be extended and retracted, also interact with the swiveling front edge stops 4 for sample sheet removal, these fingers 6 being in the retracted state in the illustration according to FIG. 1.

In Fig. 1 und 2 ist dargestellt, daß an einer Traverse 7 quer zur Formatbreite der auf dem Stapel 2 aufliegenden Bogen verfahrbar eine Meßvorrichtung 8 angebracht ist. Diese wird über nicht weiter dargestellte und an sich bekannte Antriebe sowie Fördermittel entlang der Erstreckung der Traverse 7 verfahren.1 and 2 show that a measuring device 8 is attached to a traverse 7 transversely to the format width of the sheets resting on the stack 2. This is moved along the extension of the cross member 7 by means of drives and conveying means which are not known and are known per se.

Ausgehend von der Situation gemäß Fig. 1, welche der normalen Ablage von Bogen auf dem Stapel 2 entspricht, werden nun die Bogenhochhalter 5 aktiviert, wobei deren Finger 6 von der eingefahrenen Position (Fig. 1) in die ausgefahrene Position verfahren werden. Gleichzeitig werden zusätzliche Anschläge 9 ausgefahren, welche verhindern, daß die auf den Fingern 6 der Bogenhochhalter 5 mit ihrem vorderen Teil abgelegten Bogen über die Vorderkante des Stapels 2 hinausschießen. Ebenfalls werden die Vorderkantenanschläge 4 aus der aufrechten Position gemäß Fig. 1 in eine horizontale Position gemäß Fig. 2 verschwenkt. Die aufgezählten Komponenten werden durch nicht dargestellte pneumatisch und/oder elektrisch ansteuerbare Betätigungsorgane von einer noch weiter unten stehend erläuterte Steuer-/und Auswerteeinrichtung fernbetätigt. Die nun mit ihrem vorderen Bereich aufden Fingern 6 der Bogenhochhalter 5 sich ablegenden Bogen bilden mit der Oberkante des zuletzt auf dem Stapel 2 gänzlich abgelegten Bogens einen keilförmigen Spalt, der den an der Bogenvorderkante angebrachten Druckkontrollstreifen 10 freigibt, so daß die Meßvorrichtung 8 diesen abtasten kann.Starting from the situation according to FIG. 1, which corresponds to the normal depositing of sheets on the stack 2, the sheet holding devices 5 are now activated, their fingers 6 being moved from the retracted position (FIG. 1) to the extended position. At the same time, additional stops 9 are extended, which prevent the sheets deposited on the fingers 6 of the sheet support 5 from shooting out with their front part over the front edge of the stack 2. The front edge stops 4 are also moved from the upright position according to FIG. 1 to a horizontal position according to FIG. 2 panned. The enumerated components are remotely actuated by pneumatically and / or electrically actuatable actuators, not shown, from a control and evaluation device explained below. The sheets now resting with their front area on the fingers 6 of the sheet holder 5 form a wedge-shaped gap with the upper edge of the sheet that was completely deposited last on the stack 2, which releases the pressure control strip 10 attached to the front edge of the sheet so that the measuring device 8 can scan it .

Fig. 3 zeigt die Situation gemäß Fig. 2 in perspektivischer Darstellung. Gezeigt sind hier die ausgefahrenen Finger 6 der nicht dargestellten Bogenhochhalter 5 sowie die vertikal nach unten ausgefahrenen zusätzlichen Anschläge 9. Erkennbar tauchen die Anschläge 9 in die Zwischenräume der als Laschen ausgebildeten einzelnen Vorderkantenanschläge 4 ein. In der Darstellung nach Fig. 3 wurde hier ein Meßvorgang durch die Meßvorrichtung 8 eingeleitet, wobei hier die Meßvorrichtung 8 von einer links des Stapels 2 befindlichen Parkposition den Traversiervorgang des Druckkontrollstreifens 10 beginnt. In der Darstellung gemäß Fig. 3 ist dabei ferner zu erkennen, wie die hier gemäß Ausführungsbeispiel vorgesehenen beiden Finger 6 die darauf sich ablegenden Bogen hochhalten.FIG. 3 shows the situation according to FIG. 2 in perspective. Shown here are the extended fingers 6 of the sheet support 5, not shown, as well as the additional stops 9 extended vertically downward. The stops 9 can be seen plunging into the spaces between the individual front edge stops 4 designed as tabs. 3, a measuring process was initiated by the measuring device 8, the measuring device 8 starting the traversing process of the pressure control strip 10 from a parking position to the left of the stack 2. 3, it can also be seen how the two fingers 6 provided here according to the exemplary embodiment hold up the sheets lying thereon.

Fig. 4 zeigt noch einmal die Oberseite des Stapels 2 bzw. den daraufliegenden Bogen mit dem Druckkontrollstreifen 10. Der durch die in dieser Figur nicht dargestellten Finger 6 der Bogenhochhalter 5 zur Ablage aufder Oberseite des Stapels 2 gehinderte Bogen ist hier nicht dargestellt. Wiedergegeben sind die in die horizontale Position abgeschwenkten Vorderkantenanschläge 4 sowie die aufden nicht dargestellten und auf den Fingern 6 der Bogenhochhalter 5 abgelegten Bogen einwirkenden zusätzlichen Anschläge 9. Die auf der Traverse 7 parallel zur Erstreckungsrichtung des Druckkontrollstreifens 10 verfahrbare Meßvorrichtung 8 befindet sich hier in einer links des Stapels 2 befindlichen Parkposition. Nachdem nun die erfindungsgemäße Vorrichtung aus einer Anordnung gemäß Fig. 1 in die zum Abtasten eines Bogens bzw. dessen Druckkontrollstreifens 10 vorgesehene Anordnung gemäß Fig. 2 verbracht worden ist, wird nun eine Traversierbewegung der Meßvorrichtung 8 eingeleitet. Dabei kann vorgesehen sein, daß die Meßvorrichtung 8 den Bogen bzw. den Druckkontrollstreifen 10 stets aus der gleichen Parkposition überfährt, d.h. nach einer Bewegung von links nach rechts über den Stapel 2 wieder in die vorherige Parkposition zurückkehrt. Erfindungsgemäß weiterbildend ist aber vorgesehen, daß die Meßvorrichtung 8 jeweils einen Traversiervorgang von einer aktuellen Parkposition quer über das Bogenformat in eine nächste Parkposition durchführt. Ein nächster Traversiervorgang wird dann von dieser Parkposition ausgeführt. In Fig. 4 ist dargestellt, daß die aktuelle Parkposition der Meßvorrichtung 8 links des Stapels 2 befindlich ist Zusätzlich sind hier Sensoren 11 an beiden Enden der Traverse 7 angebracht, durch welche das Vorhandensein der Meßvorrichtung feststellbar ist. Die Sensoren 11 sind dabei als Näherungsschalter ausgebildet. In Fig. 4 ist ferner rechts des Stapels 2 gestrichelt die Position der Meßvorrichtung 8 wiedergegeben, wenn die Meßvorrichtung 8 nach einem Abtastvorgang des Druckkontrollstreifens 10 sich von links nach rechts bewegt hat. Ein nächster Meßvorgang für einen nächsten Probebogen wird dann von dieser gestrichelten Position ausgelöst.Fig. 4 shows again the top of the stack 2 or the sheet lying thereon with the pressure control strip 10. The sheet prevented by the fingers 6, not shown in this figure, of the sheet holding-up means 5 from being placed on the top of the stack 2 is not shown here. The front edge stops 4 swiveled into the horizontal position and the additional stops 9 acting on the sheet (not shown) and placed on the fingers 6 of the sheet support 5 are shown. The measuring device 8 which can be moved on the crossbar 7 parallel to the direction of extension of the pressure control strip 10 is located here on the left of the stack 2 parking position. After the device according to the invention has now been moved from an arrangement according to FIG. 1 into the arrangement according to FIG. 2 intended for scanning a sheet or its pressure control strip 10, a traversing movement of the measuring device 8 is now initiated. It can be provided that the measuring device 8 always runs over the sheet or the pressure control strip 10 from the same parking position, ie after a movement from left to right via the stack 2, it returns to the previous parking position. According to the invention, however, it is provided that the Measuring device 8 each carries out a traversing process from a current parking position across the sheet format to a next parking position. A next traversing process is then carried out from this parking position. 4 shows that the current parking position of the measuring device 8 is located to the left of the stack 2. In addition, sensors 11 are attached here at both ends of the crossmember 7, by means of which the presence of the measuring device can be determined. The sensors 11 are designed as proximity switches. 4, the position of the measuring device 8 is also shown in dashed lines to the right of the stack 2 when the measuring device 8 has moved from left to right after a scanning operation of the print control strip 10. A next measurement process for a next test sheet is then triggered from this dashed position.

Fig. 5 zeigt noch einmal in vergrößerter Weise die Anordnung der auf der Traverse 7 verfahrbaren Meßvorrichtung 8. Die Vorderkantenanschläge 4 sind hierbei in der horizontalen Position, so daß entweder ein Meßvorgang durch die Meßvorrichtung 8 bzw. ein an sich bekannter Probebogenentnahmevorgang ausgeführt werden kann. Die ausgefahrenen Finger 6 der Bogenhochhalter 5 (Fig. 1 bis 3) sind hier nicht dargestellt. Durch die gestrichelten bzw. durchgezogenen Pfeile ist angedeutet, daß die Meßvorrichtung 8 und/oder die die Meßvorrichtung 8 tragende Traverse 7 in vertikaler und/oder horizontaler Weise verfahrbar ist. Angedeutet ist ferner, daß die Meßvorrichtung 8 zusätzlich noch eine die Vorderkante des Stapels 2 abtastende Einrichtung aufweisen kann, so daß über die vertikal und/oder horizontale verfahrbare Traverse 7 und/oder die Meßvorrichtung 8 bezüglich der Traverse 7 eben die Meßvorrichtung 8 stets in einem definierten Abstand zur Vorderkante des Stapels 2 und auch zur Oberseite des Bogens aufdem Stapel 2 verbringbar ist. Auch der Abstand der Meßvorrichtung 8 zur Oberfläche des abzutastenden Bogens wird durch nicht dargestellte Sensormittel erfaßt und über ansteuerbare Antriebe aufeinen konstanten Wert geregelt. Vorzugsweise ist vorgesehen, daß sich während des Abtastvorganges die Meßvorrichtung 8 über eine Rolle aufder Oberseite des abzutastenden Bogens abstützt. Die Rolle läuft dabei aufeinem unbedrucktem Bereich neben dem Druckkontrollsterifen, wodurch ein konstanter Abstand zwischen Meßoptik und Bogenoberfläche erzielt wird.Fig. 5 shows again in an enlarged manner the arrangement of the measuring device 8 movable on the crossmember 8. The front edge stops 4 are here in the horizontal position, so that either a measuring process by the measuring device 8 or a known sample sheet removal process can be carried out. The extended fingers 6 of the sheet support 5 (Fig. 1 to 3) are not shown here. The dashed or solid arrows indicate that the measuring device 8 and / or the traverse 7 carrying the measuring device 8 can be moved in a vertical and / or horizontal manner. It is also indicated that the measuring device 8 can additionally have a device that scans the front edge of the stack 2, so that the measuring device 8 is always in one with the traverse 7 and / or the measuring device 8 that can be moved vertically and / or horizontally defined distance from the front edge of the stack 2 and also to the top of the sheet on the stack 2. The distance between the measuring device 8 and the surface of the sheet to be scanned is also detected by sensor means (not shown) and regulated to a constant value by actuatable drives. It is preferably provided that the measuring device 8 is supported by a roller on the top of the sheet to be scanned during the scanning process. The roll runs on an unprinted area next to the print control sterile, whereby a constant distance between measuring optics and sheet surface is achieved.

In Fig. 5 ist ferner angedeutet, daß die Meßvorrichtung 8 hinsichtlich ihres Aufbaues derartig ausgebildet ist, so daß der unter den durch die Finger 6 der Bogenhochhalter 5 hereinreichende Bereich der Meßvorrichtung 8 möglichst klein baut. Insbesondere findet hier eine Meßvorrichtung 8 Verwendung, welche über lichtleitende Elemente sowohl die Beleuchtung als auch die Remissionen der Meßfelder des Druckkontrollstreifens 10 über Lichtleiter oder dgl. bewerkstelligt.In Fig. 5 it is also indicated that the measuring device 8 is designed in terms of its structure so that the under the by the fingers 6 of the sheet 5 reaching area of the measuring device 8 is as small as possible. In particular, a measuring device 8 is used here, which uses light-guiding elements to bring about both the illumination and the remissions of the measuring fields of the pressure control strip 10 via light guides or the like.

Die anhand der Beschreibung zu den Figuren 1 bis 5 beschriebenen Einrichtungen wie die schwenkbaren Vorderkantenanschläge 4, die Bogenhochhalter 5 mit den Fingern 6, die zusätzlichen Anschläge 9, die auf der Traverse 7 verfahrbare Meßvorrichtung 8 sowie die Parkposition der Meßvorrichtung 8 erfassenden Sensoren 11 sind dabei mit einer nicht dargestellten Steuer- und Auswerteschaltung verbunden. Die Steuer- und Auswerteschaltung bewirkt dabei wie eingangs erwähnt, daß insbesondere in bestimmten programmierbaren Meßzyklen Probebogen ausgemessen werden, wozu die Vorderkantenanschläge 4 aus einer vertikalen in eine horizontale Position verfahren, die Finger 6 der Bogenhochhalter 5, zusätzlich Anschläge 9 ausgefahren und sodann der Traversiervorgang der Meßvorrichtung 8 eingeleitet wird. Zusätzlich kann die Steuer- und Auswerteschaltung noch mit einer manuellen Betätigungseinrichtung versehen sein, so daß ein Meßvorgang auch manuell auslösbar ist. Es kann ferner auch ein weiteres Betätigungselement vorgesehen sein, vermittels dem die Finger 6 der Bogenhochhalter 5 nebst den Anschlägen 9 ausfahrbar sind, ohne daß ein Meßvorgang der Meßvorrichtung 8 eingeleitet wird. In dieser Situation ist dann in an sich bekannter Weise ein Probebogen von der Oberseite des Stapels 2 entnehmbar.The devices described on the basis of the description of FIGS. 1 to 5, such as the pivotable front edge stops 4, the sheet support 5 with the fingers 6, the additional stops 9, the measuring device 8 which can be moved on the crossbar 7 and the parking position of the measuring device 8 are sensors 11 connected to a control and evaluation circuit, not shown. The control and evaluation circuit causes, as mentioned at the beginning, that test sheets are measured in particular in certain programmable measuring cycles, for which purpose the front edge stops 4 move from a vertical to a horizontal position, the fingers 6 of the sheet holder 5, additional stops 9 are extended and then the traversing process Measuring device 8 is initiated. In addition, the control and evaluation circuit can also be provided with a manual actuating device, so that a measuring process can also be triggered manually. A further actuating element can also be provided, by means of which the fingers 6 of the arch support 5 can be extended along with the stops 9 without a measuring process of the measuring device 8 being initiated. In this situation, a test sheet can then be removed from the top of the stack 2 in a manner known per se.

Die Steuer- und Auswerteschaltung liest ferner die von der Meßvorrichtung 8 während eines Traversiervorganges über den Druckkontrollstreifen 10 anfallenden Meßwerte ein. Hier ist insbesondere vorgesehen, daß die von dem Druckkontrollstreifen 10 anfallenden Meßwerte der einzelnen Kontrollfelder gespeichert werden. In Abhängigkeit von der Parkposition, erfaßt durch die Sensoren 11, also der Stellung von welcher aus die Meßvorrichtung 8 den Meßvorgang ausführt, werden dann die einzelnen Meßwerte zur zonalen Zuordnung sortiert. Nachdem die einzelnen gespeicherten Meßwerte den einzelnen Zonen der Farbdosierung zugeordnet worden sind, kann aufgrund vorgegebener Soll-Werte in Verbindung mit den derartig erfaßten Ist-Werten eine automatische Verstellung der Farbzufuhr im Sinne einer Regelung eingeleitet werden.The control and evaluation circuit also reads in the measurement values obtained by the measuring device 8 during a traversing process via the pressure control strip 10. In particular, it is provided here that the measurement values of the individual control fields accumulating from the pressure control strip 10 are stored. Depending on the parking position, detected by the sensors 11, that is, the position from which the measuring device 8 carries out the measuring process, the individual measured values are then sorted for zonal assignment. After the individual stored measured values have been assigned to the individual zones of the color metering, an automatic adjustment of the color supply in the sense of a regulation can be initiated on the basis of predetermined target values in conjunction with the actual values recorded in this way.

BezugszeichenlisteReference list

11
Auslegerboom
22nd
Stapelstack
33rd
StapeltragplatteStack support plate
44th
VorderkantenanschlägeLeading edge stops
55
BogenhochhalterBow holder
66
Fingerfinger
77
Traversetraverse
88th
MeßvorrichtungMeasuring device
99
Anschlägeattacks
1010th
DruckkontrollstreifenPrint control strips
1111
Sensorsensor

Claims (10)

Bogendruckmaschine, insbesondere Bogenoffsetdruckmaschine, bei welcher bedruckte Bogen auf der Oberseite eines Stapels ablegbar sind, und ein in Bogenlaufrichtung der vorderen Kante der Bogen zugeordneter Druckkontrollstreifen mittels einer entlang einer Traverse verfahrbaren photoelektrischen Meßvorrichtung abtastbar ist, wobei sich die Traverse über die Formatbbreite der Bogen erstreckt,
dadurch gekennzeichnet,
daß der Ausleger (1) Bogenhochhalter (5) aufweist, vermittels der der in Bogenlaufrichtung vordere Bereich von aufder Oberseite des Stapels (2) abzulegenden Bogen hochhaltbar ist und die Meßvorrichtung (8) unterhalb der Bogenhochhalter (5) und oberhalb eines aufder Oberseite des Stapels (2) liegenden Bogens mit dem Druckkontrollstreifen (10) verfahrbar ist.Sheet-fed printing machine, in particular sheet-fed offset printing machine, in which printed sheets can be deposited on the top of a stack, and a print control strip assigned in the direction of sheet travel to the front edge of the sheets can be scanned by means of a photoelectric measuring device which can be moved along a crossbar, the crossbar extending over the format width of the sheets,
characterized by
that the delivery arm (1) has a sheet holder (5), by means of which the front area of the sheet to be deposited on the top of the stack (2) can be held up, and the measuring device (8) below the sheet holder (5) and above one on the top of the stack (2) lying sheet is movable with the pressure control strip (10). Bogendruckmaschine nach Anspruch 1,
dadurch gekennzeichnet,
daß der Ausleger (1) von einer vertikalen in eine horizontale Position verschwenkbare Vorderkantenanschläge (4) zur Ausrichtung der obersten Bogen des Stapels (2) aufweist.Sheet printing machine according to claim 1,
characterized by
that the boom (1) from a vertical to a horizontal position pivotable front edge stops (4) for aligning the top sheets of the stack (2). Bogendruckmaschine nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die mehreren über die Formatbreite der Bogen des Stapels (2) beabstandet abgeordneten Bogenhochhalter (5) ein- und ausfahrbare Finger (6) aufweisen.Sheet printing machine according to claim 1 or 2,
characterized by
that the plurality of sheet upright (5) spaced apart over the format width of the sheets of the stack (2) have retractable and extendable fingers (6). Bogendruckmaschine nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet,
daß zusätzlich neben den Bogenhochhaltern (5) Anschläge (9) vorgesehen sind, vermittels der die durch die Bogenhochhalter (5) vor einer Ablage auf der Oberseite des Stapels (2) gehinderten Bogen in eine definierte Vorderkantenposition verbringbar sind.Sheet printing machine according to claim 1, 2 or 3,
characterized by
that in addition to the sheet support (5) stops (9) are provided, by means of which the sheets prevented by the sheet support (5) before being placed on the top of the stack (2) can be brought into a defined leading edge position. Bogendruckmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß ein Meßvorgang der photoelektrischen Meßvorrichtung (8) durch eine mit dieser in Wirkverbindung stehenden Steuer- und Auswerteeinrichtung auslösbar ist, welche zusätzlich mit Sensoren (11) in Wirkverbindung steht, durch welche feststellbar ist, von welcher Seite des Stapels (2) die Meßvorrichtung (8) den Traversiervorgang beginnt.Sheet printing machine according to one of the preceding claims,
characterized by
that a measuring process of the photoelectric measuring device (8) can be triggered by a control and evaluation device which is operatively connected to the latter and which is also operatively connected to sensors (11) by which it can be determined from which side of the stack (2) the measuring device ( 8) the traversing process begins. Bogendruckmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß durch die Steuer- und Auswerteeinrichtung ein Abspeichern der durch die photoelektrische Meßvorrichtung (8) am Druckkontrollstreifen (10) erfassten Meßwerte erfolgt und daraufhin eine Zuordnung der gespeicherten Meßwerte entsprechend den Dosierzonen des Farbwerkes durchführbar ist.Sheet printing machine according to one of the preceding claims,
characterized by
that the control and evaluation device stores the measured values detected by the photoelectric measuring device (8) on the pressure control strip (10) and then the stored measured values can be assigned in accordance with the metering zones of the inking unit. Bogendruckmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß über die Steuer- und Auswerteeinrichtung sowohl Traversiervorgänge für die photoelektrische Meßvorrichtung (8) als auch eine manuelle Probebogenentnahmevorgänge auslösbar sind, wozu wahlweise nach Aktivieren der Bogenhochhalter (5) ein bzw. kein Traversiervorgang der Meßvorrichtung (8) eingeleitet wird.Sheet printing machine according to one of the preceding claims,
characterized by
that traversing processes for the photoelectric measuring device (8) as well as manual sample sheet removal processes can be triggered via the control and evaluation device, for which purpose one or no traversing process of the measuring device (8) is optionally initiated after activation of the sheet holder (5). Bogendruckmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß durch die Steuer- und Auswerteeinrichtung sowohl über ein Betätigungselement manuell als auch automatisch in programmierbaren Zyklen vorgebbar Meßvorgänge durch die Meßvorrichtung (8) auslösbar sind.Sheet printing machine according to one of the preceding claims,
characterized by
that the control and evaluation device can be used to trigger measurement operations by the measuring device (8) both manually and automatically in programmable cycles via an actuating element. Bogendruckmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Meßvorrichtung (8) in vertikaler und/oder horizontaler Orientierung bezüglich der in Bogenlaufrichtung der Bogen vorderen Kante des Stapels (2) bewegbar ist.Sheet printing machine according to one of the preceding claims,
characterized by
that the measuring device (8) is movable in vertical and / or horizontal orientation with respect to the front edge of the stack (2) in the sheet running direction of the sheet. Bogendruckmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß während eines Meßvorganges durch die photoelektrische Meßvorrichtung (8) ein eine vertikale Bewegung des Stapels (2) bewirkender Stapelhubtrieb (Stapeltragplatte (3)) durch die Steuer- und Auswerteeinrichtung gegen eine Bewegung gesperrt wird.Sheet printing machine according to one of the preceding claims,
characterized by
that during a measuring process by the photoelectric measuring device (8) a vertical movement of the stack (2) causing a stack lifting drive (stacking support plate (3)) is blocked against movement by the control and evaluation device.
EP96109625A 1995-07-13 1996-06-15 Sheet printing press Expired - Lifetime EP0753409B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19525492A DE19525492C1 (en) 1995-07-13 1995-07-13 Device for measuring in the delivery of a sheet printing machine
DE19525492 1995-07-13

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EP0753409A1 true EP0753409A1 (en) 1997-01-15
EP0753409B1 EP0753409B1 (en) 1998-05-06

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EP (1) EP0753409B1 (en)
JP (1) JP2771516B2 (en)
AT (1) ATE165769T1 (en)
DE (2) DE19525492C1 (en)

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DE3930782C1 (en) * 1989-09-14 1991-01-24 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933287A1 (en) * 1999-07-15 2001-01-18 Heidelberger Druckmasch Ag Flat form transport monitoring method e.g. for folding machine at output of rotary printing press compares indicated number of handled forms with number of forms detected by spaced sensors
US6446961B1 (en) 1999-07-15 2002-09-10 Heidelberger Druckmaschinen Ag Method and device for monitoring the transport of flat copies
EP1084844A1 (en) * 1999-09-16 2001-03-21 Komori Corporation Sheet-fed rotary printing press having a printing quality control unit
US6606949B1 (en) 1999-09-16 2003-08-19 Komori Corporation Sheet-fed rotary printing press
EP1935646A3 (en) * 2006-12-21 2010-03-03 Techkon GmbH Measuring method for continuous, automatic capture of colour data
CN112848676A (en) * 2019-11-12 2021-05-28 海德堡印刷机械股份公司 Improved sheet travel monitoring

Also Published As

Publication number Publication date
ATE165769T1 (en) 1998-05-15
JP2771516B2 (en) 1998-07-02
EP0753409B1 (en) 1998-05-06
DE59600187D1 (en) 1998-06-10
DE19525492C1 (en) 1996-12-12
JPH0929945A (en) 1997-02-04

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