EP2829401A2 - Method for the compensation of a fan-out induced transverse stretching of a sheet of printing material in a printing press with several printing inks - Google Patents

Abstract

It is proposed a method for compensating a fan-out-related transverse strain of a printed in a printing machine with a plurality of printing substrate (01), wherein for the printing of each of these inks in each case a printing cylinder (02) is used, wherein a section (43) of the printing material web is selected in a row of juxtaposed sections (41; 42; 43; 44; 46; 47) transversely to its transport direction (T) as a reference for setting a color register which is used for the printing cylinder cylinders involved in the printing, wherein in each of the side by side a marking (M41; M42; M43; M44; M46; M47) detectable by a detection device (49) is arranged on the printing material web, wherein for the section (43) selected as a reference using the section in this section of the detection device recorded mark (M43) which applies to the Druckzylinder cylinder involved in printing Farbregi Thereafter, for at least one of the pressure cylinders (02) involved in the printing, at least one lateral register deviation present between the markings arranged in immediately adjacent sections is determined by a control unit (33) connected at least to the detection device, whereupon the in particular, the printing unit cylinder having at least one page register deviation is arranged relative to one of the other printing unit cylinders by a displacement along its axis of rotation (38) in a mean-reducing manner formed by the respective page register deviations determined for that printing cylinder before the compensation of cross-extension due to fan-out the printing material web is executed.

Description

The invention relates to a method for compensating a fan-out-related transverse strain of a printing substrate printed in a printing machine with a plurality of printing inks.

As a fan-out effect is referred to in particular in wet web offset printing a transverse strain or a width elongation of a printing substrate, z. B. a paper web, by moisture absorption. As a result, in the multi-color printing resulting register differences between the successive in printing sites (inks) are to produce a printed product with a good print quality and to avoid waste. The correction can be done by having several consecutive pressure points in a transport direction of the printing material, z. In a printing machine designed as an eight-high tower, d. H. a respective printing material web on both sides in each case with four inks printing printing machine, z. B. after the first two in the transport direction of the printing substrate successive each one of the inks verdruckenden printing sites an image web controller is installed, said image web controller the printing substrate with the unwanted z. As caused by fan-out transverse strain transversely to its transport direction S-shaped and corrected by this deformation of the printing substrate, the respective positions of the already printed inks relative to the respective positions of the still to be printed inks.

By the DE 10 2004 004 264 A1 are a method for compensating for a transverse strain and / or a longitudinal expansion of a printing material and a Printing machine with a plurality of at least one print image on a printing material-producing printing units known, wherein a portion of the transverse strain of the printing material is compensated except by measures in the imaging by an axial displacement of a forme cylinder relative to a reference mark of the printing material and wherein a further part of the transverse strain of the printing material by the use of an image controller is counteracted. The compensation of the transverse strain in the imaging can take account of the fact that the transverse strain has a stronger effect on the "outer" printed image areas which are close to the face with respect to the forme cylinder than on the "inner" printed image areas arranged close to the center of the forme cylinder. B. a cylinder length halving center line applies as a reference mark for the transverse strain.

By the DE 10 2008 001 367 A1 is a method for operating an arranged in a printing press having a plurality of actuating elements Bildbahnreglers known, wherein at least two of these actuating elements independently act on a surface of a printing substrate transported through the printing press, these adjusting elements are each set in their respective action on the printing substrate by a control device wherein the control device carries out the adjustment of the respective actuating element on the basis of a signal supplied thereto by at least one detection device, at least one marking on the same surface at a first time from a same printing cylinder of the printing press in at least two different sections arranged side by side transversely to the transport direction of this printing material web the printing material web is printed, wherein at a later second time at the end of a traversed by the printing material Tr at least two of the markings arranged in different sections of the printing material web are detected, wherein the mark in one of these sections is selected as a reference, wherein a distance between the mark selected as a reference and the at least one other at the second time detected mark is detected, said determined distance with is compared to its value which it had during the printing of these markings at the first time, wherein a second time deviating value of this distance at its first time having value by an adjustment made by the control unit of the adjustment not having the reference portion associated control element is adjusted.

By the DE 102 44 437 A1 It is known to use in multi-color printing a web offset printing machine to the color register control an arrangement of several individual printed marks in an arbitrarily designed brand field, the individual brands from each other have a predetermined minimum distance, the brand field is surrounded by a white space or white area to a position detection of the individual Brands not affected by an adjacent other subject.

By the EP 2 447 071 A1 a side register correction apparatus is known, comprising a register correction unit capable of correcting register movement of a fiber web through each plural printing units, and a fan correction unit capable of correcting a width of the fiber web stretched in a width direction; Page register correcting apparatus comprising: a) a register detecting and estimating unit capable of estimating and detecting a register correction amount by the register correcting unit based on at least two register marks printed on the fibrous web by each of the printing units when plural printing units are in one moving direction Print fiber web for performing correction by the register correction unit and the fan correction unit; b) a register correction control unit capable of automatically controlling the register correction unit in real time based on the register correction amount provided by the register detecting and estimating unit is derived; c) a fan detection and estimation unit capable of estimating and detecting a fan correction amount by the fan correction unit based on a register flag; and d) a fan correction control unit capable of automatically controlling the fan correction unit in real time based on the fan correction amount derived by the fan detection and estimation unit, wherein the register marks are printed on a front side and a back side of the fiber web, e ) the register detecting and estimating unit comprises a pair of register cameras disposed at the front and the back of the fibrous web with the fibrous web interposed and being capable of detecting the register marks, and having a register correction amount deriving unit which obtains the register correction amount from the register marks derived by each of the pair of register cameras; and f) the fan detection and estimation unit comprises a fan camera arranged to face the fibrous web and capable of detecting a register mark, and a fan correction amount deriving unit deriving the fan correction amount from the register flag obtained by the fan Fan camera is detected; and g) wherein the fan-out camera is disposed on one end side of the fibrous web in the width direction and the pair of register cameras is disposed on central portions of the fibrous web in the width direction.

By the DE 295 01 373 U1 a device for correcting the fan-out effect on web-fed rotary printing presses with a train locally out of its plane deflecting actuator is known, wherein the actuator is actuated by a control loop which includes a control device on the input side with a transmitter for the deflection of the web in Direction of its width and the output side is in communication with an actuating device of the actuating element, wherein preferably a read on the web registered register marks reading head is connected to the control device, wherein the read head and the control device of the type a color register control unit for circumferential and side registers are embodied, wherein the control device is connected to both the actuator of the control element for the fan-out correction and to an adjustment device for the circumferential register.

By the DE 103 52 619 A1 a method for influencing the fan-out effect by means of a device for influencing the fan-out effect is known, wherein a sensor of a Seitenregistersteuerung / -regelung, parts of a Seitenregistersteuerung / -regelung and / or measured values of a page register control / regulation for driving a device for influencing the fan-out effect are used. Likewise, a method for influencing the fan-out effect by means of a device for influencing the fan-out effect and for influencing the side register by means of a side register control / regulation is known by this document, wherein the device for influencing the fan-out effect and the side register control / regulation rely on a reading of a same sensor. In both variants, the measured values of two sensors arranged next to one another in the axial direction are preferably used for influencing the fan-out effect, which sensors each detect a print image detail or a printed mark located on the web.

By the DE 195 29 430 A1 an electric drive system for the adjustment of one or more rotatable and / or pivotable functional parts of equipment and machines is known, in particular for adjusting cylinders or rollers of sheet-fed presses, in their angular position or speed, with one or more electric motors with one each associated functional part are connected to one or more power electronics parts, the output side, each with an electric motor to its control, and with at least one signal processing unit, for receiving control, control, setpoint and / or angular position or angular velocity signals formed by any angle encoders on the functional parts or runners of the electric motors and with the or respective power electronic components to their control or control technology control is connected, wherein a security module is provided for access to at least signals in the field of functional parts, the electric motors, the power electronics parts, the signal processing unit and / or a power supply and their comparison or evaluation for plausibility is formed and has one or more interfaces or communication means, in particular in the form of a bus system for output generated error message signals.

The invention has for its object to provide a method for compensating a fan-out conditional transverse strain of a printed in a printing machine with multiple printing substrate substrate.

The object is achieved by the features of claim 1.

The advantages that can be achieved with the invention are, in particular, that the compensation of the fan-out-related transverse expansion of the printing material web is improved because the starting position for this compensation is improved. Because it creates a very favorable starting position for this compensation, so that the fan-out compensation using a particular image path controller leads to better results. In addition, the preferably used compensation method contributes to a mechanical damage to the printing material web being reduced by at least one adjusting means of the image path controller involved in the fan-out compensation because the risk of scratching and / or slitting of the printing material web by one of the fans -out compensation involved adjusting means of the image web controller and / or a tendency to wrinkling of this printing material is or will be reduced, so that this method is particularly advantageous when using a very thin and / or less tear-resistant printing material.

An embodiment of the invention is illustrated in the drawings and is in Described in more detail below.

Fig. 1

schematisch einen Achterturm einer Rollendruckmaschine;

Fig. 2

verdeutlicht den Fan-out-Effekt beim Durchlauf einer Papierbahn durch den Achterturm der Fig. 1;

Fig. 3

einen im Achterturm der Fig. 1 verwendeten Bildbahnregler in einer Baugruppendarstellung;

Fig. 4

eine Stelleinheit des in der Fig. 3 dargestellten Bildbahnreglers;

Fig. 5

eine perspektivische Ansicht von Einzelheiten der in der Fig. 4 dargestellten Stelleinheit;

Fig. 6

eine Programmmaske zur Einstellung des in der Fig. 3 dargestellten Bildbahnreglers;

Fig. 7

eine weitere Programmmaske zur Einstellung des in der Fig. 3 dargestellten Bildbahnreglers;

Fig. 8

eine Programmmaske mit einer für den in der Fig. 3 dargestellten Bildbahnregler eingestellten Kompensationskurve;

Fig. 9

ein Blockschaltbild betreffend eine Steuerung einer Vorrichtung aufweisend eine Steuereinheit und den mehrere Stelleinheiten aufweisenden Bildbahnregler gemäß mindestens einer der vorangegangenen Figuren;

Fig. 10

eine Anordnung zur Regelung einer Vorrichtung aufweisend eine Steuereinheit, eine Erfassungseinrichtung und den mehrere Stelleinheiten aufweisenden Bildbahnregler gemäß mindestens einer der vorangegangenen Figuren;

Fig. 11

in einer schematischen Teilansicht eine Anordnung der zu beiden Seiten einer Bedruckstoffbahn angeordneten Stellelemente des Bildbahnreglers;

Fig. 12

eine schematische Darstellung einer Vorrichtung zur Durchführung des vorgeschlagenen Verfahrens;

Fig. 13

eine Programmmaske zur Anzeige der ermittelten Seitenregisterabweichungen.

Show it:

Fig. 1

schematically a four-high tower of a web-fed printing press;

Fig. 2

illustrates the fan-out effect when passing through a paper web through the four-tower Fig. 1 ;

Fig. 3

one in the four - tower Fig. 1 used image path controller in an assembly representation;

Fig. 4

an actuator of the in Fig. 3 illustrated image controller;

Fig. 5

a perspective view of details in the Fig. 4 illustrated actuator;

Fig. 6

a program mask for setting the in the Fig. 3 illustrated image controller;

Fig. 7

another program mask for setting the in the Fig. 3 illustrated image controller;

Fig. 8

a program mask with a for in the Fig. 3 illustrated image path controller set compensation curve;

Fig. 9

a block diagram relating to a control of a device comprising a control unit and the plurality of actuators having image path controller according to at least one of the preceding figures;

Fig. 10

an arrangement for controlling a device comprising a control unit, a detection device and the multiple position units having image path controller according to at least one of the preceding figures;

Fig. 11

in a schematic partial view of an arrangement of arranged on both sides of a printing substrate control elements of the image path controller;

Fig. 12

a schematic representation of an apparatus for carrying out the proposed method;

Fig. 13

a program mask for displaying the ascertained page register deviations.

Fig. 1 shows as an example of a printing machine schematically a four-high tower of a web press with both sides of a printing substrate 01, z. B. a paper web 01, employees printing cylinder 02, z. B. transfer cylinder 02, wherein two transfer cylinders 02 are employed in pairs against each other. To each side of the paper web 01 are for carrying out a multi-color printing, z. B. a four-color print each more, z. B. four transfer cylinders 02 arranged. The paper web 01 thus passes through four printing locations in its direction of transport T directed upwards from the bottom, on each of which one of the four printing inks of the four-color printing is applied to the paper web 01. The two first, ie lower, pressure points in the transport direction T of the paper web 01 form a lower printing unit in the four-high tower, whereas the two subsequent, ie upper, pressure points form an upper printing unit. In this example, between the lower and the upper pressure unit to compensate for a caused by the fan-out effect transverse stretching of the substrate 01 a Bildbahnregler 03 with on each side of the paper web 01 more, z. B. four juxtaposed actuators 04 arranged. On a representation of cooperating with the respective transfer cylinders 02 form cylinders, as in Offset printing usual, as well as other commonly belonging to a printing unit components and / or units was omitted for reasons of clarity. The not shown forme cylinder fall under the name printing cylinder 02. The transfer cylinder 02 transferred in their respective axial direction side by side several print images on the web 01, z. B. at least two to eight printed images, each of the printed images with one of a plurality of transverse to the transport direction T of the paper web 01 juxtaposed sections 41; 42; 43; 44; 46; 47 correlates ( Fig. 10 ). The web press is z. B. used in newspaper printing. In this application, the printed on the respective transfer cylinders 02 side by side printed images each correspond to one side of a newspaper. Each multi-colored newspaper page consists of a precisely fitting, in the transport direction T of the web 01 consecutively executed overprint of several, z. B. four partial printing images or color separations, ie assigned between the individual each one ink, on the web 01 successively each same newspaper page printing color separations should not be inadmissible Passerdifferenzen.

Fig. 2 indicates in a simplified representation of how a width B01 of the paper web 01 as it passes through in the Fig. 1 illustrated four-high tower in particular by a moisture absorption at the four successive pressure points preferably at the two in the transport direction T of the paper web 01 directed edges each by an amount of transverse strain Δ01; Δ02 widens, provided that no compensation of the fan-out effect takes place, wherein the transverse strain Δ01; Δ02 on both edges of the paper web 01 by no means must be equal in magnitude. Because, depending on the amount of printing ink per printed image, especially in the case of using a wet offset printing process, a section 41 which correlates with this printed image also varies; 42; 43; 44; 46; 47 of the paper web 01 received amount of dampening solution, which in the respective section 41; 42; 43; 44; 46; 47 of the Paper web 01 sources, ie in particular their respective, possibly asymmetrical transverse strain Δ01; Δ02 caused.

Fig. 3 shows the orbit controller 03 of the Fig. 1 in an assembly representation, wherein the term of the assembly in the sense of DIN 6789 taken definitions is used. Two at a distance A06 z. B. in the range between 50 mm and 150 mm, in particular between 80 mm to 100 mm, mutually parallel trusses 06, each arranged in the axial direction of the transfer cylinder 02 between the (not shown) frame walls of the printing press or at least be arranged and between which Paper web 01 out or at least feasible, each carrying several, z. B. four juxtaposed actuators 04, each actuator 04 is formed in each case as a controllable module 04 with a force acting on the paper web 01 actuating means 07, wherein the actuating means 07 in turn preferably as a deflectable, freely rotatably mounted roller 07 is formed. In each module 04, an action brought about by the adjusting means 07 is arranged in the plane of the paper web 01-executing actuator 13, this actuator 13, in the illustrated example, causing the deflection of the respective roller 07 ( Fig. 5 ), wherein with the respective deflection of at least one of the rollers 07, the paper web 01 in its width B01 z. B. is deformed wave-shaped and thereby a between different pressure points occurred register difference, in particular color register shift is corrected. Because the deflection of the rollers 07 takes place in each case in the plane of the paper web 01 in order to hire the rollers 07 to the paper web 01 or out of this plane for the purpose of parking the rollers 07 of the web 01, at the same time pivoted both sides in the plane of the web 01 Rollers 07 the paper web 01 in their width B01 wavy or S-shaped deform.

The actuator 13 sets a control command of a control unit 33 (FIG. Fig. 9 ) in mechanical work, in particular in a running of the respective roller 07 movement to. The actuator 13 is z. B. formed as an electromechanical drive 13. A further exemplary embodiment of the actuator 13 may be in the form of a valve 13, which influences a flow, in particular the pressure of an air flow directed onto the plane of the paper web 01, by its opening or closing controlled by the control unit 33. In the case of a pneumatic image path controller 03, the pressure set by the control unit 33 of the flow directed onto the plane of the paper web 01 corresponds to the actuating means 07 moved by the respective actuator 13 in the case of a mechanical image path controller 03. The actuators 13 are accordingly in each case the actuators in one of the control unit 33 influenced control chain or, if the control unit 33 is fed back a correlating with the setting of the actuating means 07 signal in a controlled by the control unit 33 control loop.

In each adjusting means 07 is an intensity of its engagement in the plane of the paper web 01 and thus a degree of deformation of the paper web 01 controlled by a control unit 33 to the actuator 13 control command or at least controllable and thus metered or at least metered, z. B., each roller 07 for the purpose of their deflection preferably a continuously adjustable adjustment S07 in the range z. B. between 10 mm and 50 mm, in particular between 15 mm and 25 mm. The modules 04 are z. B. by means of a bracket 08 and a detachable connection, for. As a screw, attached to the respective cross member 06, preferably clamped, wherein the respective traverse 06 z. B. as a preferably hollow profile bar with a z. B. rectangular cross-section with an edge length of z. B. 20 mm to 50 mm, preferably 30 mm to 40 mm, is formed. The modules 04 are preferably arranged equidistantly at their respective traverse 06, z. B. each at a distance A04 of 200 mm to 400 mm, in particular 350 mm, said distance A04 z. B. the respective width of the sections 41; 42; 43; 44; 46; 47, in which the width B01 of the paper web 01 is divided ( Fig. 10 ). Each traverse 06 has z. B. a clear width or length L06 in the range of 1700 mm to 2400 mm, in particular between 1,900 mm and 2,000 mm. The modules 04 are along their respective traverse 06 are preferably arranged displaceably and can be freely positioned at their respective traverse 06, ie, in particular with regard to the width B01 of the paper web 01 at any desired locations.

Fig. 4 shows in an enlargement of one of the modules 04 with an associated along the displacement S07 deflectable roller 07. The adjustment S07 each roller 07 of the orginal controller 03 ( Fig. 3 ) can z. B. at a press belonging to the control room z. B. from -25% to + 100% and be changed in this area, wherein at a setting of -25%, the respective roller 07 is pivoted from the plane of the paper web 01 maximum and therefore a retraction of the paper web 01 between the two spaced arranged trusses 06 is possible. At a setting of 0% is an orthogonal to the paper web 01 distance of z. B. 0.5 mm between the respective roller 07 and the paper web 01. The maximum penetration depth of each roller 07 in the plane of the web 01 is reached at a setting of + 100%. This percentage setting and the actual setting of the adjustment path S07 can be assigned to one another linearly or non-linearly. Each roller 07 has a diameter D07 in the range of z. B. 50 mm to 100 mm, in particular 60 mm to 80 mm. The bracket 08 of the module 04 is z. B. connected to a mounting plate 09 of the module 04, wherein the mounting plate 09 and the bracket 08 engage around the cross section of the cross member 06, to which this module 04 is to mount, so that the module 04 is secured against rotation on the crossbar 06 or at least attachable , The mounting plate 09 carries on its one side a housing 11, in which at least the drive 13 is preferably arranged dust and moisture protected for adjusting the belonging to this module 04 roller 07, and to its other side z. B. a lever 12 for receiving there the respective roller 07, which in the Fig. 5 is shown. A connected to the drive shaft 13 14 passes through the mounting plate 09. The roller 07 supporting the lever 12 is fixedly connected to this shaft 14. By a rotational movement of the shaft 13 connected to the drive 13, the lever 12 and thus the one on it Axle pivot freely rotatably mounted roller 07 deflected. The displacement S07 of the roller 07 may be limited in their two deflection directions each by a mechanical stop, which protrudes in each case from the mounting plate 09 and against the z. B. the roller 07 supporting lever 12 abuts in an inadmissible rotational movement of the shaft 14.

The arranged in the housing 11 of the module 04 actuator 13 is in the preferred embodiment as a drive 13 for adjusting the belonging to this module 04 roller 07 z. B. as an electrically driven motor 13, in particular as a stepper motor 13, preferably as a Klauenpolschrittmotor 13, z. B. formed as a 2-phase stepping motor 13, the winding z. B. is switched unipolar. A of such a drive 13, in particular stepper motor 13 torque exerted z. B. by means of a likewise arranged in the same housing 11 of the module 04 gear 16, in particular a planetary gear 16, stocky on the lever 12 deflecting shaft 14 given a reduction ratio of the transmission 16 z. B. in the range of 500: 1 to 100: 1, in particular 400: 1 to 300: 1 can lie. Thus, the motor 13, by means of a rotation of the shaft 14 driven by it, preferably adjusts the adjustment path S07 of the roller 07 of the relevant setting unit 04 via the gear 16 coupled to it. The maximum of the roller 07 to be executed adjustment S07 requires z. B. a rotation angle φ of the shaft 14 in the range of only 30 ° to 60 °, in particular 40 ° to 45 ° ( Fig. 4 ), wherein the transmission 16 z. B. performs a total of between 1,000 and 2,500 steps, in particular 1,800 to 2,000 steps. A provided in or on the housing 11 of the module 04, preferably connected to the driven shaft 14 potentiometer is used to detect the angular position of this shaft 14th

By means of a module 04 z. B. detachable line connection 17 ( Fig. 3 and 5 ), the respective actuator 13 for adjusting the belonging to this module 04 roller 07 z. B. at least supplied with electrical energy in connection with a constant voltage.

About this preferably multi-pin line connection 17 of the actuator 13 for adjusting the belonging to this module 04 roller 07 and the preferably electronic control unit 33 (FIG. Fig. 9 ), so that the z. B. a bidirectional communication gestattende line connection 17 is preferably also designed as a data interface 17, with which the actuator 13 of the respective module 04 is connected to a digital network 34 for data exchange or at least attachable. In the data interface 17 is preferably a the respective actuator 13 at least with respect to the control unit 33 identifying electronic address impressed. Furthermore, preferably via this data interface 17, a measured value provided by the potentiometer with respect to the angular position of the shaft 14 to the z. B. the drive 13 controlling the control unit 33, whereby a closed loop is formed with respect to the control exercised by the control unit 33. A directed from the potentiometer via the control unit 33 to the drive 13 data flow is used in particular in an automatically running loop for setting and / or tracking of the respective actuating means 07. The physical line management belonging to the digital network 34 preferably takes place initially in or along the traverse 06 carrying the module 04 and then on to the control unit 33, which is preferably arranged outside the printing unit. The digital network 34 is generally a plurality of different, with the control unit 33 Data exchanging aggregates connected, but at least all actuators 13 of the image path controller 03.

The control unit 33 may, for. B. be integrated in the belonging to the printing press control room. An exchange of data between arranged in the module 04 components, z. As the drive 13 and / or the potentiometer, and the control unit 33 preferably takes place via a line system 34, which is designed as the digital network 34, said line system 34 may be integrated into a network for controlling the printing press. In the preferred embodiment, the network 34, via which the control unit 33 exchanges data between it and at least the respective actuator 13 to be controlled of the image path controller 03, is a network for controlling arranged in the printing machine units, z. As an inking unit and / or a dampening unit, which are involved in a running in the printing press printing process.

Each of the rollers 07 of the in the Fig. 3 illustrated image controller 03 is from the control unit 33, z. B. of the press belonging to the control station, individually and independently of the other rollers 07 of this orbit controller 03 set in their respective adjustment S07 or at least adjustable. For this purpose, each belonging to a Bildbahnregler 03 module 04 is individually addressed from the control center or at least addressable, ie based on an individual, the respective module 04 associated, in particular unique address selectively set from the control center or at least adjustable. This means that the respective actuator 13 of the actuating units 04 is assigned an electronic address identifying it in the digital network 34, by means of which a specific one of the plurality of actuators 13 connected to the digital network 34 can be selected, and the actuator 13 selected by the latter z. B. initiated displacement S07 the movable roller 07 each individually and independently of the other actuators 13 of the control unit 33 by the digital network 34 exchanged data, in particular at least one control command is set or at least adjustable. The digital network 34, via which the control unit 33 exchanges data between it and at least the respective motor 13 to be controlled of the image path controller 03 is, for. B. formed as an Ethernet based network 34. Fig. 9 FIG. 2 illustrates in a block diagram the control or regulation in a device comprising the already mentioned control unit 33 and the above-described multiple track 04 having image path controller 03. On different sides of the paper web 01 arranged, but the same section 41; 42; 43; 44; 46; Adjusting means 07 assigned to this paper web 01 are preferably used simultaneously by the control unit 33, but in opposite directions, so that these adjusting means 07 move in pairs either toward one another or away from each other (FIG. Fig. 11 ).

The control room has, as in the Fig. 9 indicated, at least via a display device 36, to which various program masks 18 are displayed, and via an operating unit 37, with which values can be manually entered or with which in at least one of the program masks 18 displayed values are selectable. Fig. 6 shows, by way of example, such a program mask 18 displayed on the control station, in the left lower area of which a particular printing tower of the printing press is shown schematically and selected or at least selectable by means of at least one button 19. As in the upper left area of the Fig. 6 shown, can then in the selected printing tower of z. B. between the lower and the upper pressure unit of this printing tower arranged image path controller 03 are selected based on at least one other button 21, in which case the adjustment S07 z. B. each individual roller 07 z. B. by means of sliders 22 or by a numerical input in the individual rollers 07 associated input fields 23 can be adjusted. If all rollers 07 are to be adjusted in the same way, a numerical input can also be made in an input field 24 serving for overall adjustment. The input in the input fields 23; 24 concerns z. B. on the ranging from -25% to + 100% range S07 percentages, which z. B. can then be visualized by a corresponding positioning of the slider 22 in their respective adjustment and / or by a display of this numerical value.

Fig. 7 indicates alternatively Fig. 6 a further program mask 18, in which in respective input fields 23 for each of the roller 07 of a selected orbital controller 03, a numerical value, in particular a percentage, for the respective displacement S07 of the respective roller 07 can be entered. In an input field 24, a numerical input for a uniform adjustment of all belonging to this image path controller 03 rollers 07 can be entered. The example shown shows a compensation value of 15%.

The program masks 18 of the Fig. 7 and Fig. 6 is common that on the one hand an individual setting of several, preferably all belonging to a particular image controller 03 rollers 07 is provided, but on the other hand it is also possible to impose on these individual settings an input common compensation value. This compensation value, which applies to all rollers 07, alters all individual settings in the same way. For example, it adds an input compensation value of 15% to all individual settings.

The intensity of the fan-out effect depends inter alia on the production speed of the printing press, ie on the speed of its printing cylinder 02, in particular transfer cylinder 02 (FIG. Fig. 1 ). There is also a dependence of the intensity of the fan-out effect of properties of the printing substrate 01, z. B. of a grammage of the paper used. Fig. 8 shows an example displayed on the control panel or at least displayable program mask 18, which contains at least one graph 26 with a course of a above the rotational speed of the printing cylinder 02 applied compensation curve 27, wherein the compensation curve 27 respectively those z. B. percentage compensation value indicates that all associated with a particular image controller 03 rollers 07 is stamped in association with the speed of the printing cylinder 02. In a memory of the control unit 33, a plurality of compensation curves 27 are preferably stored, wherein each of these compensation curves 27 z. B. a property of the printing material 01 is associated, for. B. the grammage of the paper used. Each of these compensation curves 27 can be called up on the program mask 18 by a corresponding selection. In the in the Fig. 8 the example shown in the diagram 26 compensation curve 27 applies to a paper with the grammage of 45 g / m ² . The course of each compensation curve 27 is defined by several support points 28 or at least fixed, the support points 28 the traversed by the printing press range of production speed from its standstill to its maximum speed z. B. divide evenly. The number of nodes 28 may be for each compensation curve 27 z. B. based on a Numeric input in an input field 31 can be freely defined or at least definable. It can z. B. ten support points 28 may be provided, which from standstill to the maximum speed of z. B. divide 45,000 cylinder revolutions per hour reaching range of production speed in nine equal speed intervals. The compensation value belonging to the respective values of the production speed is e.g. B. in a diagram 26 associated table 29 editable, ie there numerical values for the respective nodes 28 can be entered. From the numerical values entered in Table 29 for the respective interpolation points 28, the graph of the relevant compensation curve 27 is then generated by the control unit 33 in the diagram 26 by a line connecting the interpolation points 28. In a further input field 32, the course of the respective compensation curve 27 displayed in the diagram 26 can be changed, for. B. the course of the respective compensation curve 27 can be raised or lowered as a whole, wherein the value by which the course of the respective compensation curve 27 is to be changed, can be entered as an absolute value or as a relative value.

From the diagram in the 26th Fig. 8 illustrated course of one of the compensation curves 27 it can be seen that it is advantageous in a start-up area A of the printing machine, ie from its standstill z. B. up to about one-fifth or one-third of their maximum production speed to start the respective compensation curve 27 with a comparatively large slope, then then in a subsequent run-up area B up to its maximum production speed steadily against a lower limit value of z. B. 30% z. B. drop non-linear or asymptotic. The setting of the adjustment path S07 of each roller 07 of a specific image path controller 03 which is dependent on the production speed of the printing press is thus combined in a compensation curve 27, wherein the compensation curve 27 in the startup region A of the printing press increases with a magnitude greater than that with reverse sign in which subsequent to the start-up area A run-up area B drops again to its maximum production speed.

Preferably, several different adjustable compensation curves 27 are in the memory of the control unit 33 in association with selected productions, z. To a type of paper, and / or to selected printing towers, d. H. to a print location, stored or at least storable and can be invoked on program mask 18 from memory as a default. After entering or selecting a particular production on the program mask 18, the control unit 33 proposes for the respective print locations, i. H. for the respective printing towers of the printing press, certain default settings for the adjustment path S07 of the respective rollers 07 of the image path controller 03 acting on the relevant printing location before and / or sets these default values automatically or after a release by the operator of the printing machine. Based on the respective preset on the basis of the compensation curves 27 settings of the adjustment S07 of each roller 07 of a particular image controller 03 in an ongoing production of the printing machine automatically z. B. be tracked by a managed by the control unit 33 control loop or by a new manual input to the control unit 33.

The control executed by the control unit 33 can also be carried out fully automatically without manual intervention, which will be described below by way of example in connection with FIG Fig. 10 is explained. In the in the Fig. 10 example shown, the width B01 of the paper web 01 in several, z. B. in six transversely to the transport direction T of this paper web 01 juxtaposed sections 41; 42; 43; 44; 46; 47 divided, wherein in z. B. each of these sections 41; 42; 43; 44; 46; 47 each have a particular page z. B. a newspaper is printed by the overprinting belonging to the respective page color separations. In the preferred embodiment, the method is thus carried out in a printing press which prints a plurality of inks in the same production process.

The form cylinder of the printing press used is z. B. formed as a 6/2-forme cylinder, wherein in this example on the lateral surface in the axial direction six printing plates next to each other and at each axial mounting position two printing plates are arranged in its circumferential direction. The fixed with respect to the paper web 01 sections 41; 42; 43; 44; 46; 47 are preferably each of equal width B41; B42; B43; B44; B46; B47. The width B41; B42; B43; B44; B46; B47 of the respective sections 41; 42; 43; 44; 46; 47 corresponds z. B. each with a transversely to the transport direction T of the web 01 directed width of the arranged on the respective with the respective transfer cylinder 02 form cylinder arranged printing forms. In the in the Fig. 10 Example shown are on both sides of a web of paper 01 in the transport direction T centrally passing symmetry line 48 each three of the aforementioned sections 41; 42; 43; 44; 46; 47 provided, wherein each of the symmetry line 48 adjacent sections 43; 44 define a center region of this paper web 01, whereas the regions farthest from the symmetry line 48 41; 47 are each considered to be associated with an edge region of this paper web 01. A section 43; 44 is arranged as lying in the middle region of the paper web 01 when it adjoins the line of symmetry 48 passing through the paper web 01 or is passed through by this line of symmetry 48.

From at least one of the production z. B. the newspaper involved printing cylinder 02 is in several, preferably in each of these juxtaposed sections 41; 42; 43; 44; 46; 47 each a mark M41; M42; M43; M44; M46; M47 printed on the web 01 The respective marking M41; M42; M43; M44; M46; M47 may be a one-piece or multi-part mark specially printed to determine registration differences, e.g. B. be a so-called register mark of different geometry. The mark M41; M42; M43; M44; M46; M47 can but also a not in addition to the printed image of the respective page of the newspaper to be produced applied significant area in this printed image.

A one-piece or multi-part detection device 49 detects z. B. optically, in particular by a respective marking M41; M42; M43; M44; M46; M47 imaging method, preferably photographic, d. H. by a photographic image, one or more of the marks M41 printed on the surface of the paper web 01; M42; M43; M44; M46; M47. The detection device 49 has the respective with respect to the paper web 01 juxtaposed sections 41; 42; 43; 44; 46; 47 associated detectors 51; 52; 53; 54; 56; 57, each detector 51; 52; 53; 54; 56; 57 preferably exactly one of these sections 41; 42; 43; 44; 46; 47 is assigned. The detectors 51; 52; 53; 54; 56; 57 are each formed as separate components, for. B. each as a scanner or as a camera. In an alternative embodiment of the detection device 49, at least the respective sections 41; 42; 43; 44; 46; 47 associated detection areas 51; 52; 53; 54; 56; 57 provided within a trained as a single assembly detection unit, these detection areas 51; 52; 53; 54; 56; 57 each exactly one of the sections 41; 42; 43; 44; 46; 47 are assigned. The respective detectors 51; 52; 53; 54; 56; 57 or detection areas 51; 52; 53; 54; 56; 57 are z. B. individually and independently z. B. activated by a control unit 33. It is preferably provided that in each case one of the sections 41; 42; 43; 44; 46; 47 associated detection areas 51; 52; 53; 54; 56; 57 is measured simultaneously or that all respective detectors 51; 52; 53; 54; 56; 57 simultaneously perform their respective measurement.

The detection device 49 converts z. B. from the respective detectors 51; 52; 53; 54; 56; 57 or detection areas 51; 52; 53; 54; 56; 57 made mapping of at least one of the printed on the surface of the paper web 01 marks M41; M42; M43; M44; M46; M47 in a preferably electrical, in particular digital Signal to and passes this signal to the control unit 33, which in turn emits an actuating signal to at least one actuator 07 of the image controller 03, wherein this made by the control unit 33 adjustment of the at least one control element 07 in particular in an ongoing production of the printing machine. Since the control unit 33 carries out this adjustment of the at least one adjusting element 07 automatically on the basis of the signal of the detection device 49, the control unit 33 has the functionality of a control device 33. The detection device 49 can also be used for further control tasks and / or quality checking tasks in the printing press by the signal generated by the detection device 49 is evaluated with respect to various criteria.

The arranged in the printing machine in the manner described above, a plurality of actuators 07 having image path controller 03 is operated in the preferred embodiment such that one of the transverse to the transport direction T of the printing substrate 01 juxtaposed portions 41; 42; 43; 44; 46; 47 detected marks M41; M42; M43; M44; M46; M47 z. B. is selected by the control device 33 as a reference and set for the subsequent control method as such, wherein z. B. a mark M43; M44 from one of the middle region of the printing substrate 01 attributable sections 43; 44 is selected as a reference. In the in the Fig. 10 In the example shown, the marking M43 has been selected as a reference from the section 43, which is viewed on the left in the direction of transport T of the printing material web, and is adjacent to the line of symmetry 48. Alternatively, one of the other markings M41 would have; M42; M44; M46; M47, z. B. the marker M44 in the right of the line of symmetry 48 adjacent section 44 can be selected as a reference. The marking M43 selected as a reference in this example thus lies in a section 43, which extends transversely to the transport direction T of the printing material web 01 on both sides in each case to a further section 42; 44 of this printing material 01 adjacent.

Thus, at a first time of a same printing cylinder 02 of the printing machine in at least two different transversely to the transport direction T of this printing substrate 01 juxtaposed sections 41; 42; 43; 44; 46; Each 47 at least one mark M41; M42; M43; M44; M46; M47 printed on the same surface of the substrate web 01. At a later second time at the end of a traversed by the substrate 01, z. B. between the individual printing units of the printing press existing transport path of the at least one detection device 49 at least two of the different sections 41; 42; 43; 44; 46; 47 of the substrate web 01 arranged markings M41; M42; M43; M44; M46; M47 recorded. A determination of the transverse strain Δ01 made in the printing substrate web 01; Δ02 serving method provides, for example, that then z. B. from the controller 33, a distance A41; A42; A43; A44; A46; A47 between the marker M41 selected as the reference; M42; M43; M44; M46; M47 and the at least one other mark M41 detected at the second time; M42; M43; M44; M46; M47 is determined, this determined distance A41; A42; A43; A44; A46; A47 is compared with its value which it has during the printing of these marks M41; M42; M43; M44; M46; M47 had the first time. Furthermore, a second value of this distance A41; A42; A43; A44; A46; A47 at its value having the first time by an altered setting made by the control device 33 of the at least one non-reference section 41; 42; 43; 44; 46; 47 associated adjusting element 07 aligned. This results in a deviation in the value of the relevant distance A41; A42; A43; A44; A46; A47 is minimized between the first and second times and preferably reduced to zero.

After a correction carried out in a first step of the elongation in a z. B. the portion 43 with the selected as a reference mark M43 adjacent section 42; 44, the value of a distance A41 related to the mark M43 selected as a reference; A46; A47 a mark M41; M46; M47 in at least another section 41 not directly adjacent to the section 43 with the marker M43 selected as the reference; 46; 47 determined, wherein in a second step and this distance A41; A46; A47 by a control device 33 to the at least one respective section 41; 46; 47 assigned control element 07 issued control signal on his at the pressure of these marks M41; M46; M47 value is set. Thus, the setting of the distance A42; A44 before the setting of the distance A41 set in the second step; A46; A47 executed.

As a result, an undesirable z. B. caused by fan-out width expansion of the substrate web 01 each with respect to a reference selected as the reference marker M43 starting from a z. B. in the middle or near the middle of the printing substrate 01 lying section 43 is gradually adjusted by a from the detection of marks M41; M42; M44; M46; M47 value of a distance A41 related to the reference selected mark M43; A42; A44; A46; A47 is in each case adjusted to its value determined by the fact that the respective section 41; 42; 44; 46; 47 associated actuator 07 is re-adjusted with respect to its effect on the relevant substrate web 01. This method described here by way of example for compensating for the elongation of the width meets the experience that the z. B. caused by fan-out width elongation of the printing substrate 01 increases mostly from the center to the edge regions out, the width increase relative to the symmetry line 48 or selected as the reference marker M43, however, may be both symmetrical and asymmetrical. In particular, the width expansion of the printing material 01 in their different sections 41; 42; 44; 46; Be different, which is a differentiated setting of or the respective section 41; 42; 44; 46; 47 associated adjusting elements 07 requires.

Fig. 11 shows a schematic partial view of an arrangement of arranged on both sides of the web 01 positioning elements 07 of the image controller 03, wherein arranged on the same side of the paper web 01 positioning elements 07 are each arranged in a direction parallel to the width B01 of this paper web 01 distance A04 ( Fig. 3 ). Two arranged on different sides of the paper web 01 actuators 07 work in pairs together by these adjusting means 07 are brought by the control unit 33 simultaneously, but in opposite directions, so that these adjusting means 07 in pairs either move towards each other or move away from each other. A pair of cooperating actuating means 07 is in the z. B. the width B43 and B44 having sections 43; 44, each with one of its edges z. B. adjacent to the line of symmetry 48 of the paper web 01, each arranged laterally spaced, ie it exists between the same section 43; 44 assigned, but arranged on different sides of the web 01 positioning means 07 a parallel to the width B01 of the paper web 01 directed offset y, said offset y z. B. is twice as large as a shortest distance x; z, the one in the relevant section 43; 44 arranged adjusting means 07 each to one of the edges of this respective section 43; 44 has. In the in the Fig. 11 example shown, the offset y was chosen such that z. For example, y = 2x = 2z = x + z.

• a) Von den mehreren quer zur Transportrichtung T der Bedruckstoffbahn 01 in einer Reihe nebeneinander angeordneten Abschnitten 41; 42; 43; 44; 46; 47 dieser Bedruckstoffbahn 01 wird einer dieser Abschnitte 41; 42; 43; 44; 46; 47 als Referenz ausgewählt, wobei der als Referenz ausgewählte Abschnitt 41; 42; 43; 44; 46; 47 z. B. an oder auf einer die Bedruckstoffbahn 01 in deren Transportrichtung T durchlaufenden Symmetrielinie 48 angeordnet ist.
• b) In dem als Referenz ausgewählten Abschnitt 41; 42; 43; 44; 46; 47 wird eine in dem betreffenden Abschnitt 41; 42; 43; 44; 46; 47 auf der Bedruckstoffbahn 01 vorhandene einteilige oder mehrteilige Markierung M41; M42; M43; M44; M46; M47 als ein Istwert eines für diesen Abschnitt 41; 42; 43; 44; 46; 47 geltenden Farbregisters z. B. von einem diesem Abschnitt 41; 42; 43; 44; 46; 47 zugeordneten Detektor 51; 52; 53; 54; 56; 57 einer in der Druckmaschine angeordneten Erfassungseinrichtung 49 erfasst.
• c) Das Farbregister wird z. B. von der Steuereinheit 33 auf einen für den als Referenz ausgewählten Abschnitt 41; 42; 43; 44; 46; 47 vorgesehenen Sollwert eingestellt, indem mindestens einer der am Druck beteiligten Druckwerkszylinder 02 zumindest in seiner axialen Position und gegebenenfalls auch in seiner Drehwinkellage relativ zu einem anderen der Druckwerkszylinder 02 neu eingestellt wird, wobei der Istwert und der Sollwert des Farbregisters jeweils durch die jeweilige Lage oder die jeweilige Anordnung der betreffenden Markierung M41; M42; M43; M44; M46; M47 in dem betreffenden als Referenz ausgewählten Abschnitt 41; 42; 43; 44; 46; 47 gegeben sind. Der Sollwert des Farbregisters wird z. B. von einer Druckvorstufe oder von einem Produktionsplanungssystem vorgegeben.
• d) Danach werden auch in den übrigen Abschnitten 41; 42; 43; 44; 46; 47, die auf der Bedruckstoffbahn 01 in einer Reihe mit dem als Referenz ausgewählten Abschnitt 41; 42; 43; 44; 46; 47 angeordnet sind, die jeweilige Lage oder die jeweilige Anordnung der jeweiligen Markierungen M41; M42; M43; M44; M46; M47 jeweils von einem z. B. dem betreffenden Abschnitt 41; 42; 43; 44; 46; 47 zugeordneten Detektor 51; 52; 53; 54; 56; 57 der Erfassungseinrichtung 49 erfasst.
• e) Von der vorzugsweise mit der Erfassungseinrichtung 49 datentechnisch verbundenen Steuereinheit 33 wird für mindestens einen der am Druck beteiligten Druckwerkszylinder 02 jeweils ein Wert für die jeweilige Seitenregisterabweichung zwischen den jeweiligen Markierungen M41; M42; M43; M44; M46; M47 von jeweils unmittelbar benachbart angeordneten Abschnitten 41; 42; 43; 44; 46; 47 ermittelt, wobei sich dieser Wert auf einen quer zur Transportrichtung T der Bedruckstoffbahn 01 gerichteten Abstand zwischen Vergleichspositionen, z. B. zwischen in verschiedenen Abschnitten 41; 42; 43; 44; 46; 47 angeordneten, jeweils zu den jeweiligen Markierungen M41; M42; M43; M44; M46; M47 gehörenden Marken gleicher Druckfarbe bezieht.
• f) Vorzugsweise unter der Bedingung, dass der jeweilige ermittelte Wert von zumindest einer der Seitenregisterabweichungen zwischen den jeweils zu den jeweiligen Markierungen M41; M42; M43; M44; M46; M47 gehörenden Marken gleicher Druckfarbe von jeweils unmittelbar benachbart angeordneten Abschnitten 41; 42; 43; 44; 46; 47 größer als ein z. B. produktionsabhängig vorgegebener Schrankenwert ist, wird ein z. B. von der Steuereinheit 33 aus allen ermittelten Werten der betreffenden Seitenregisterabweichungen errechneter Mittelwert durch ein Verschieben des betreffenden die betreffende Druckfarbe verdruckenden Druckwerkszylinders 02 entlang seiner jeweiligen Rotationsachse 38 um einen maximal dem vorgegebenen Schrankenwert entsprechenden Betrag reduziert. Anschließend wird die Kompensation der durch Fan-out bedingten Querdehnung Δ01; Δ02 der Bedruckstoffbahn 01 z. B. durch eine Steuerung der den jeweiligen Abschnitten 41; 42; 43; 44; 46; 47 zugeordneten Stellmittel 07 des Bildbahnreglers 03 unter Verwendung dieser sich nach diesem Verfahrensschritt ergebenen Anordnung der betreffenden am Druck beteiligten Druckwerkszylinder 02 ausgeführt. Sollte ein bestimmter ermittelter Wert von zumindest einer der Seitenregisterabweichungen zwischen den jeweils zu den jeweiligen Markierungen M41; M42; M43; M44; M46; M47 gehörenden Marken gleicher Druckfarbe von jeweils unmittelbar benachbart angeordneten Abschnitten 41; 42; 43; 44; 46; 47 zwar größer sein als der z. B. produktionsabhängig vorgegebene Schrankenwert, aber in Relation zu den jeweiligen Werten der übrigen Seitenregisterabweichungen nicht plausibel sein, so wird ein solcher nicht plausibler Wert vorzugsweise als Ausreißer gewertet und von der Steuereinheit 33 für weitere im Rahmen dieses Verfahrens liegende Aktionen ignoriert. Der z. B. produktionsabhängig vorgegebene Schrankenwert liegt vorzugsweise in einem Bereich von z. B. ± 0,1 mm.

The above-described method for compensating the fan-out-related transverse strain Δ01; Δ02 of a printing material web 01 printed in a printing machine with a plurality of printing inks is now improved by the compensation of the transverse strain Δ01; Δ02 is only executed after the following method steps have been carried out:

• a) Of the several transverse to the transport direction T of the printing substrate 01 in a row juxtaposed sections 41; 42; 43; 44; 46; 47 of this printing material 01 is one of these sections 41; 42; 43; 44; 46; 47 is selected as the reference, wherein the reference-selected section 41; 42; 43; 44; 46; 47 z. B. on or on a printing substrate 01 in the transport direction T. continuous symmetry line 48 is arranged.
• b) in the section 41 selected as a reference; 42; 43; 44; 46; 47 becomes one in the relevant section 41; 42; 43; 44; 46; 47 existing on the substrate web 01 one-piece or multi-part mark M41; M42; M43; M44; M46; M47 as an actual value of one for this section 41; 42; 43; 44; 46; 47 applicable color register z. From a section 41; 42; 43; 44; 46; 47 associated detector 51; 52; 53; 54; 56; 57 a arranged in the printing machine detection device 49 detected.
• c) The color register is z. B. from the control unit 33 to a selected for the reference section 41; 42; 43; 44; 46; 47 provided setpoint by at least one of the pressure cylinder 02 involved in the pressure at least in its axial position and possibly also in its rotational position relative to another of the printing cylinder 02 is reset, the actual value and the desired value of the color register respectively by the respective position or the particular arrangement of the relevant marking M41; M42; M43; M44; M46; M47 in the respective reference-selected section 41; 42; 43; 44; 46; 47 are given. The setpoint of the color register is z. B. predetermined by a prepress or by a production planning system.
• d) Thereafter, in the remaining sections 41; 42; 43; 44; 46; 47, on the printing substrate 01 in a row with the selected as a reference section 41; 42; 43; 44; 46; 47 are arranged, the respective position or the respective arrangement of the respective markings M41; M42; M43; M44; M46; M47 each of a z. B. the relevant section 41; 42; 43; 44; 46; 47 associated detector 51; 52; 53; 54; 56; 57 of the detection device 49 detected.
• e) From the data processing unit preferably connected to the detection unit 49, a value for the respective page register deviation between the respective markings M41; M42; M43; M44; M46; M47 of immediately adjacent portions 41; 42; 43; 44; 46; 47 determined wherein this value is directed to a transversely to the transport direction T of the substrate web 01 distance between comparison positions, z. B. between in different sections 41; 42; 43; 44; 46; 47 arranged, respectively to the respective markings M41; M42; M43; M44; M46; M47 belonging brands of the same ink.
• f) preferably on the condition that the respective determined value of at least one of the page register deviations between the respectively to the respective marks M41; M42; M43; M44; M46; M47 belonging brands of the same ink from each immediately adjacent portions arranged 41; 42; 43; 44; 46; 47 larger than a z. B. production-dependent predetermined threshold value is a z. B. calculated by the control unit 33 from all the determined values of the relevant page register deviations mean value by shifting the relevant the respective ink verdruckenden printing cylinder 02 along its respective axis of rotation 38 by a maximum amount corresponding to the predetermined threshold value. Subsequently, the compensation of the fan-out-related transverse strain Δ01; Δ02 of the printing substrate 01 z. B. by a control of the respective sections 41; 42; 43; 44; 46; 47 associated adjusting means 07 of the orbital controller 03 using this resulting after this process step arrangement of the relevant participating in the printing cylinder unit 02 executed. Should a certain determined value of at least one of the page register deviations between the respective markings M41; M42; M43; M44; M46; M47 belonging brands of the same ink from each immediately adjacent portions arranged 41; 42; 43; 44; 46; 47 may be larger than the z. B. production-dependent predetermined threshold value, but not be plausible in relation to the respective values of the remaining page register deviations, such a non-plausible value is preferably evaluated as an outlier and ignored by the control unit 33 for further actions in the context of this procedure. The z. B. production-dependent predetermined threshold value is preferably in a range of e.g. B. ± 0.1 mm.

The respective printing cylinder 02 involved in the printing are thus each first in certain, Seitenregisterabweichungen reducing manner arranged relative to each other before the actual compensation of the fan-out caused transverse strain .DELTA.01; Δ02 of the substrate web 01 takes place. This is for the actual compensation of the fan-out caused transverse strain Δ01; .DELTA.02 of the substrate web 01 created a more favorable starting position. Because in the manner described above, aligned in the side register arrangement of the relevant participating in the printing cylinder unit 02 causes the respective sections 41; 42; 43; 44; 46; 47 assigned adjusting means 07 of the orbit controller 03 intervene less intensively in the printing substrate 01 (must). This, in turn, has the advantage that the risk of scratching and / or slitting of the printing material web 01 is reduced by one of the adjusting means 07 of the image web controller 03 participating in the fan-out compensation and / or a tendency to wrinkling of this printing material web 01, which is particularly advantageous for a very thin and / or less tear-resistant printing substrate 01. The proposed method thus favors the avoidance of mechanical damage to the printing substrate 01 by at least one participating in the fan-out compensation adjusting means 07 of the image path controller 03.

Based on Fig. 12 and 13 the proposed procedure will be explained again. Fig. 12 shows simplified and schematically the apparatus for performing the proposed method with a preferably printed on both sides of substrate web 01, the transport direction T is indicated by an arrow. This substrate web 01 is covered by several, z. B. four successively arranged in the transport direction T printing cylinders 02 z. B. printed in an offset printing process, as it is z. B. in the Fig. 1 is shown. In the Fig. 12 By way of example, only one of these printing cylinder 02 is shown, wherein this as well as the other printing cylinder 02 along their respective axis of rotation 38 in each case more, z. B. six pressure points a; b; c; d; e; have f. Each of these pressure points a; b; c; d; e; f is in each case exactly one of the transverse to the transport direction T juxtaposed preferably each equal width sections 41; 42; 43; 44; 46; 47 assigned ( Fig. 10 ). In the Fig. 12 is a the printing material 01 in the transport direction T continuous symmetry line 48 indicated, wherein on both sides of this symmetry line 48 each at least one of the sections 41; 42; 43; 44; 46; 47, preferably each more, z. B. three sections 41; 42; 43; 44; 46; 47 are arranged. The pressure points a; b; c; d; e; f are z. B. realized by arranged on the respective printing cylinder 02 printing forms, so that the respective printing cylinder 02 is formed in each case as a forme cylinder and each with a in the Fig. 12 not shown transfer cylinder cooperates. On the printing substrate 01 acts a Bildbahnregler 03 with its respective adjusting means 07, wherein in this example each pressure point a; b; c; d; e; f at least one such adjusting means 07 is assigned. Likewise, a detection device 49 is provided, which is operated in such a way that it has at least one marking M41, which is applied to the printing material web 01; M42; M43; M44; M46; M47 recorded. In the in the Fig. 12 Operating position shown by way of example captures the detection device 49 a marking M43 applied to the printing material web 01 by means of the printing location d. Also, the respective operating positions of the detecting means 49 for detecting the respective mark M41; M47 in the "outer" sections 41; 47 are indicated. The respective marks M41; M42; M43; M44; M46; M47 are preferably in the middle of each of the sections 41; 42; 43; 44; 46; 47 arranged what in the Fig. 12 is indicated by dashed lines, wherein the detection means 49 each to this position in the respective sections 41; 42; 43; 44; 46; 47 is aligned. The detection device 49 is z. B. able to mark all marks M41; M42; M43; M44; M46; M47 in all transverse to the transport direction T juxtaposed sections 41; 42; 43; 44; 46; 47 at the same time or in preferably chronologically short steps to capture.

Fig. 13 shows an example of another program mask 18, as z. B. at one Display device 36 of belonging to the printing press control station is displayed or at least displayable. In a z. B. upper portion of this program mask 18 are of the detection device 49 in the transverse to the transport direction T juxtaposed sections 41; 42; 43; 44; 46; 47 detected, on the substrate web 01 preferably in each case multi-part formed markings M41; M42; M43; M44; M46; M47 each in the form z. B. of trademark fields in a row next to each other. The immediately adjacent to the printing substrate 01 in the transport direction T continuous line of symmetry 48 adjacent section 43 has been selected in this example as a reference and is therefore preferably shown highlighted on the program screen 18, z. B. by a thicker eye-catching border of this brand field. For the selected as reference section 43 is z. B. from the control unit 33 first for the involved in the printing process cylinder unit 02 color register set to its desired value, with a selected in this selected section 43 actual value and provided for this section 43 setpoint of the color register respectively by the respective position or the respective arrangement the relevant mark M43 are given in the relevant reference selected section 43, wherein z. B. the control unit 33 performs a comparison of the determined actual value with the predetermined target value and at a certain tolerance limit exceeding and thus impermissible deviation between the actual value and the desired value involved in the printing process printing cylinder 02 repositioned relative to each other by at least one of these printing cylinder 02 at least is readjusted in its axial position and / or in its rotational angle position. Fig. 13 shows the mark M43 of the reference-selected portion 43 in an arrangement which is e.g. B. corresponding to the target value of the color register, ie with respect to this arrangement of the marking M43 match the participating in the multi-color printing inks printed partial images in the intended manner, ie in the correct color register on top of each other, so that the final additive consisting of the participating inks print image neither blurred, blurred or with color shifts appears, which otherwise for the printed image respectively would have a quality-reducing effect. In the remaining sections 41; 42; 44; 46; 47, which are arranged on the printing substrate 01 in a row with the reference selected as the section 43, is in the in the Fig. 13 illustrated example, the respective position or the respective arrangement of the respective marks M41; M42; M44; M46; M47 is different from the location or arrangement of the respective marker M43 in the reference-selected portion 43, which means that the respective color register in the remaining portions 41; 42; 44; 46; 47 each of which for the respective section 41; 42; 44; 46; 47 deviates setpoint of the color register. In fact, all the markers M41 usually deviate; M42; M43; M44; M46; M47 in their respective position or the arrangement of their respective brands or brand elements relative to each other. The existing page register deviations are now z. In start-up area A or in run-up area B ( Fig. 8 ) or in the printing press of a connected to the detection device 49 control unit 33 z. B. determined by adding a value for the respective page register deviation between the respective marks M41; M42; M43; M44; M46; M47 of immediately adjacent portions 41; 42; 43; 44; 46; 47 is determined. In the concrete embodiment, this means in this example that in a multi-color printing, z. B. in a four-color printing in particular at least for each of the three commonly used colors cyan, magenta and yellow, the respective page register deviation between the z. B. farthest left, the immediately adjacent sections 41; 42 assigned markings M41 and M42 determined and z. B. in a first left column on the program mask 18 z. B. is displayed graphically and / or numerically. The display of page register deviations assigned in each case to three chromatic colors cyan, magenta and yellow are shown on the program mask 18 z. B. shown in three rows one above the other. Then, for each of the three chromatic colors cyan, magenta and yellow, the respective page register deviation between the two in the row z. B. next, the immediately adjacent sections 42; 43 assigned marks M42 and M43 determined and also z. B. in a second column on the Program mask 18 is displayed. The same becomes true for the next sections 43; 44 associated markings M43 and M44 and for the other the immediately adjacent sections 44; 46 assigned markers M44 and M46 and ultimately for the z. B. arranged on the far right, the immediately adjacent sections 46; 47 assigned mappings M46 and M47 carried out so that on the program mask 18 in the case of a six axially juxtaposed pressure points a; b; c; d; e; For each of the four-color prints executed, the result is a total of five columns and three rows with a respective display of the respectively determined page register deviations. Subsequently, the control unit 33 determines for each relevant ink, ie for each respective printing cylinder 02 an average of all determined for this printing cylinder 02 page register deviations. It can be provided that a particularly high value for a page register deviation that does not appear plausible in the context of the other values of the respectively determined page register deviations, such as the one shown on the program mask 18 z. B. in the middle of each row designated values of 0.35 and 0.39 for the inks cyan and magenta, is excluded from the control unit 33 of a further evaluation. In multicolor printing, black is usually used as the reference color for the color colors involved in printing. In the Fig. 13 For example, the reference color black used for setting the color register is indicated only by a bar horizontal in the program mask 18 and extending over all the columns.

After by the control unit 33 preferably at least for all the colors involved in the printing and for all involved in the pressure transversely to the transport direction T juxtaposed pressure points a; b; c; d; e; f and their associated sections 41; 42; 43; 44; 46; 47, the respective page register deviations have been determined, all determined values of these page register deviations between the respective markings M41; M42; M43; M44; M46; M47 of immediately adjacent portions 41; 42; 43; 44; 46; 47 by a in the Fig. 12 indicated by a double arrow shift of the respective color of the relevant assigned printing cylinder 02 along its respective axis of rotation 38 by a maximum of a predetermined threshold value corresponding amount reduced if the respective determined value of at least one of the page register deviations between the respective marks M41; M42; M43; M44; M46; M47 of immediately adjacent portions 41; 42; 43; 44; 46; 47 is greater than the predetermined threshold value. This limit is z. B. ± 0.1 mm, wherein the sign indicates to which in the transport direction T extending edge of the printing substrate 01, the respective page register deviation is directed, ie z. B. from the line of symmetry 48 of the printing substrate 01 from the right (+) or left (-).

The compensation of fan-out induced transverse strain Δ01; Δ02 of the printing material web 01 by the at least one adjusting means 07 of the image path controller 03 is carried out according to the proposed method only after at least one of the relevant pressure cylinder concerned 02 has been displaced along its respective axis of rotation 38 by the maximum amount corresponding to the predetermined barrier value and so some leveling or equalization of the page register deviations has taken place. In a printing machine printing in an offset printing process, in particular, the respective printing cylinder 02 formed as a forme cylinder is displaced axially in the manner described. The proposed method thus provides a special, particularly advantageous starting situation for carrying out the compensation of a fan-out-related transverse strain Δ01; Δ02 a printing substrate printed in a printing machine with multiple printing inks ready when at least one adjusting means 07 of an image controller 03 is used for this compensation. As a reference, preferably that of the juxtaposed portions 41; 42; 43; 44; 46; 47 selected, in which the most uniform and thus best leveling of the side register deviations is achieved by the axial displacement of the printing cylinder 02 involved in the printing process in question. This selection makes the control unit 33 on the basis of a comparison of its from the respective sections 41; 42; 43; 44; 46; 47 and / or based on the respective sections 41; 42; 43; 44; 46; 47 results obtained. The best leveling of the page register deviations is achieved when, taking into account preferably several, in particular all printing inks involved in the printing, in particular the chromatic colors, z. B. a respective formed from the respective determined page register deviations mean value after execution of the axial displacement of at least one of the pressure cylinder involved in the respective printing process cylinder 02 by the maximum the predetermined threshold amount corresponding to a reduced compared to the original situation, preferably assumes its absolute value as low as possible.

According to the invention results in a method for compensating a fan-out conditional transverse strain Δ01; Δ02 of a printing material web 01 printed in a printing machine having a plurality of printing inks, one printing cylinder 02 being used for the printing of each of these printing inks, a section 43 of sections 41, 41 arranged side by side on the printing material web 01 in a row transverse to its transport direction T; 42; 43; 44; 46; 47 is selected as a reference for setting a valid for the participating printing unit cylinder 02 color register, wherein in each of the juxtaposed sections 41; 42; 43; 44; 46; 47 on the substrate web 01 in each case detectable by a detection device 49 marking M41; M42; M43; M44; M46; M47 is mounted, wherein for the selected as the reference section 43 using the detected in this section 43 of the detection means 49 marking M43 applicable to the pressure cylinder 02 involved color register is set, wherein thereafter for at least one of the printing cylinder 02 involved in the pressure first at least one between the immediately adjacent arranged in sections 41; 42; 43; 44; 46; 47 attached marks M41; M42; M43; M44; M46; M47 existing side register deviation is determined in each case by at least one data logically connected to the detection device 49 control unit 33, whereupon then the relevant having the at least one page register deviation Printing cylinder 02 is arranged relative to one of the other printing cylinder 02 by a shift along its axis of rotation 38 in a one of the respective determined for this printing cylinder 02 page register deviations mean value reducing manner before the compensation of fan-out caused by transverse strain Δ01; Δ02 of the substrate web 01 is executed. Preferably, the compensation of the fan-out conditional transverse strain Δ01; .DELTA.02 of the printing material web 01 printed in the printing machine with a plurality of printing inks, using at least one adjusting means 07 of an image web regulator 03. The respective value of the page register deviations determined for the relevant printing cylinder 02 is reduced in particular by the displacement of the relevant printing cylinder 02 along its axis of rotation 38 by a maximum amount corresponding to a predetermined threshold value, if the respective determined value of at least one of the page register deviations greater than the predetermined Is the barrier value. As the threshold value, a value within a range of ± 0.1 mm is preferably used. In the respective on the printing substrate 01 in a row juxtaposed sections 41; 42; 43; 44; 46; 47 is a one-piece mark M41; M42; M43; M44; M46; M47 or a multi-part marker M41; M42; M43; M44; M46; M47 attached. Several or all in the respective juxtaposed on the substrate web 01 in a row sections 41; 42; 43; 44; 46; 47 attached marks M41; M42; M43; M44; M46; M47 are preferably detected by the detection device 49 either simultaneously or in successive steps. The compensation of fan-out induced transverse strain Δ01; Δ02 of the printing material web 01 is advantageously carried out after several or all of the printing units 02, each printing a color ink, have been displaced along their respective axis of rotation 38 by the maximum amount corresponding to the predetermined barrier value. A value determined for one of the page register deviations is then ignored by the control unit 33 in a preferred embodiment, although this value is greater than the predetermined threshold value, but in relation to the values of the remaining page register deviations is not plausible. The respective value for the respective page register deviation is preferably displayed graphically and / or numerically in a program mask 18 of a display device 36. A desired value of the color register and / or the threshold value is or will be z. B. predetermined by a prepress or by a production planning system. The proposed method is carried out in particular in a four-high tower of a web press, wherein the web press in their printing process z. B. a wet offset printing method used. The page register deviations are z. B. determined in a start-up area A or in a run-up area B or in the continuous printing of the web press.

LIST OF REFERENCE NUMBERS

01

Substrate web, paper web

02

Printing cylinder, transfer cylinder

03

Pathway regulator

04

Actuator, module

05

-

06

traverse

07

Adjusting means, roller

08

hanger

09

mounting plate

10

-

11

casing

12

lever

13

Actuator, drive, valve, motor, stepper motor

14

wave

15

-

16

Transmission, planetary gear

17

Line connection, data interface

18

program mask

19

button

20

-

21

button

22

pusher

23

input box

24

input box

25

-

26

diagram

27

compensation curve

28

support point

29

table

30

-

31

input box

32

input box

33

Control unit, control device

34

Network, line system

35

-

36

display

37

operating unit

38

axis of rotation

39

-

40

-

41

section

42

section

43

section

44

section

45

-

46

section

47

section

48

line of symmetry

49

detector

50

-

51

Detector, detection area

52

Detector, detection area

53

Detector, detection area

54

Detector, detection area

55

-

56

Detector, detection area

57

Detector, detection area

a

bruise

b

bruise

c

bruise

d

bruise

e

bruise

f

bruise

A

start-up range

B

Ramp area

A04

distance

A06

distance

A41

distance

A42

distance

A44

distance

A46

distance

A47

distance

B01

width

B41

width

B42

width

B43

width

B44

width

B46

width

B47

width

D07

diameter

L06

length

M41

mark

M42

mark

M43

mark

M44

mark

M46

mark

M47

mark

S07

adjustment

T

transport direction

x

distance

y

offset

z

distance

Δ01

Poisson

Δ02

Poisson

φ

angle of rotation

Claims (15)

A method for compensating a fan-out-related transverse strain (Δ01, Δ02) of a printing material web (01) printed in a printing machine having a plurality of printing inks, one printing cylinder (02) being used for the printing of each of these printing inks, one section (43) of on the printing material web (01) in a transverse row to its transport direction (T) in a series juxtaposed sections (41; 42; 43; 44; 46; 47) selected as a reference for setting a valid for the printing unit cylinder involved (02) color register is in each of the juxtaposed sections (41; 42; 43; 44; 46; 47) on the printing substrate (01) each detectable by a detection device (49) mark (M41; M42; M43; M44; M46; M47 ), wherein for the section (43) selected as the reference, using the mark (M43) detected by said detecting means (49) in said section (43), that for printing Compressor cylinder (02) applicable color register is set, wherein thereafter for at least one of the printing cylinder (02) involved in the printing initially at least one between the immediately adjacent arranged in sections (41; 42; 43; 44; 46; 47) are each determined by a control unit (33) connected at least to the detection device (49), whereupon the relevant printing unit cylinder (02 ) is arranged relative to one of the other printing unit cylinders (02) by a displacement along its axis of rotation (38) in a mean-reducing manner from the respective page register deviations determined for said printing unit cylinder (02), before the compensation of transverse expansion caused by fan-out (Δ01, Δ02) of the printing substrate (01) is executed. A method according to claim 1, characterized in that the compensation of fan-out-related transverse strain (.DELTA.01, .DELTA.02) of printed in the printing machine with multiple printing substrate substrate (01) using at least one adjusting means (07) of an image path controller (03) is executed , Method according to Claim 1 and / or 2, characterized in that the respective value of the page register deviations determined for the relevant printing cylinder (02) then corresponds to a predetermined threshold value by the displacement of the respective printing cylinder (02) along its axis of rotation (38) Amount is reduced when the respective determined value of at least one of the page register deviations is greater than the predetermined threshold value. Method according to claim 1 and / or 2 and / or 3, characterized in that in the respective sections (41; 42; 43; 44; 46; 47) arranged juxtaposed on the printing material web (01) in each case a one-part marking ( M41; M42; M43; M44; M46; M47) or a multi-part marker (M41; M42; M43; M44; M46; M47). Method according to claim 1 and / or 2 and / or 3 and / or 4, characterized in that several or all sections (41; 42; 43; 44; 46; 46) arranged side by side in the row on the printing material web (01) are arranged in a row. 47) (M41; M42; M43; M44; M46; M47) are respectively detected by the detection means (49) simultaneously or in successive steps. A method according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5, characterized in that the compensation of the fan-out caused transverse strain (.DELTA.01, .DELTA.02) of the printing substrate (01) is carried out after several or all each printing a color ink printing cylinder (02) along its respective axis of rotation (38) have been shifted by the maximum amount corresponding to the predetermined threshold value. Method according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6, characterized in that a value determined for one of the page register deviations is then ignored for further actions lying within the scope of this method, if this Value is greater than the predetermined threshold value, but is not plausible in relation to the values of the remaining page register deviations. Method according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7, characterized in that as reference a section (43; 44) is selected which on or on one the printing material web (01) is arranged in the direction of transport (T) of the continuous line of symmetry (48). A method according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8, characterized in that for setting the color register at least one of the printing cylinder (02 ) is adjusted in addition to its axial position in its angular position relative to another of the printing cylinder (02). A method according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9, characterized in that a desired value of the color register and / or the barrier value is predefined by a prepress or by a production planning system. A method according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10, characterized in that as Limit value is used within a range of ± 0.1 mm and / or that the barrier value is specified depending on the production. A method according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11, characterized in that the respective value for the respective page register deviation in a program mask (18) of a display device (36) is displayed graphically and / or numerically. The method of claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12, characterized in that the page register deviations are determined in a start-up area (A) or in a run-up area (B) or in the production run of the web press. Method according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13, characterized in that the web-fed printing press uses a wet offset printing process in its printing process. Method according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14, characterized in that this method is carried out in a four-high tower of a web-fed printing press.

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