EP1693199B1 - Méthode et appareil pour appliquer une correction d'impression - Google Patents

Méthode et appareil pour appliquer une correction d'impression Download PDF

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Publication number
EP1693199B1
EP1693199B1 EP05028390A EP05028390A EP1693199B1 EP 1693199 B1 EP1693199 B1 EP 1693199B1 EP 05028390 A EP05028390 A EP 05028390A EP 05028390 A EP05028390 A EP 05028390A EP 1693199 B1 EP1693199 B1 EP 1693199B1
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EP
European Patent Office
Prior art keywords
printing
correction
print
marks
length
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05028390A
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German (de)
English (en)
Other versions
EP1693199A2 (fr
EP1693199B2 (fr
EP1693199A3 (fr
Inventor
Christoph Müller
Stephan Schultze
Simon Rützler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Rexroth AG
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Bosch Rexroth AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Bosch Rexroth AG filed Critical Bosch Rexroth AG
Publication of EP1693199A2 publication Critical patent/EP1693199A2/fr
Publication of EP1693199A3 publication Critical patent/EP1693199A3/fr
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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
    • B41F33/0081—Devices for scanning register marks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices

Definitions

  • the invention relates to a method for performing a pressure correction according to patent claims 1 and a device for pressure correction according to patent claim 13.
  • the clamping length is the same for all clichés, so that, due to the different cliché heights, different rolling lengths for the individual clichés can result.
  • variable printing lengths or sizes of the printing substrates in the course of a printing process it is also disadvantageous to obtain variable printing lengths for the individual processing tools.
  • One result of these are perfectly fitting printing processes for the individual processing tools and thus unclear appearance of the overall prints.
  • variable tool lengths are corrected manually.
  • the effective printing lengths of the individual processing tools on the printed sheets are measured individually. From these print lengths for the individual processing tools correction values are determined, which are manually entered into a printing device. This results disadvantageously in a complicated and cumbersome handling that prolongs the machining process in an undesirable manner by its time complexity. For a plurality of printing cylinders whose printing lengths are manually corrected, a disadvantageously high additional processing effort can arise in this way.
  • an automated performing a pressure correction is supported, wherein the correction comprises a correction of a print length.
  • the pressure correction principles known in the art can be improvedly applied.
  • set-up times for printing tools can be minimized.
  • An efficiency of a printing operation may thus be favorably increased.
  • a preferred embodiment of the method according to the invention provides that, in addition to the correction of the printing length, a correction of a printing position is also carried out.
  • print marks on the printed product can be regulated in terms of location, which supports improved alignment of individual prints and thus further improves the quality of a printing process.
  • a further preferred embodiment of the method according to the invention provides that at least one first print mark is arranged in a front in the transport direction of the printed product area and at least one second print mark in a rear direction in the transport direction of the printed product.
  • a further preferred embodiment of the method according to the invention provides that only a first of a plurality of processing devices applies the two print marks during the processing operation. It can thereby be achieved that, in the machining process, machining devices adjust their pressures in terms of their position to the pressure of the first machining device. It is achieved in this way so a position correction of the pressure, with the help of long-term drifts can be permanently eliminated from the printing process. Stability of the printing process is thus advantageously increased.
  • FIG. 1 shows a diagram of a basic representation of a pressure correction according to the invention.
  • a machine angle for example, a working angle of a counter-pressure cylinder
  • An angle of a printing cylinder of the printing device is plotted on the y-axis.
  • a region 9 on the x-axis defines a printing area and an area 10 on the x-axis defines a non-printing zone of the printing device, ie a region of the printing device in which no printing of the printed product is performed.
  • a substantially linear course 1a represents an uncorrected course of the machine angle over the angle of the printing cylinder.
  • the two angles are synchronous with each other, thereby achieving identical speeds of a printed product and a printing cylinder with a clamped printing plate.
  • This can be seen in the diagram from the fact that the impression cylinder has performed a full revolution (360 °) at the same time as the impression cylinder.
  • a curve 1b represents a printing length-corrected course of the machine angle over the angle of the printing cylinder.
  • the course 1b is made steeper than the course 1a, the printing cylinder thus already reaches a complete revolution earlier than the impression cylinder.
  • the impression cylinder has performed approximately one complete revolution (from 0 ° to 360 °) at a time when the impression cylinder has only rotated from 0 ° to 300 °. This means that the impression cylinder rotates at a higher angular velocity than the axis of the printing device that drives the impression cylinder due to the flexo flexographic printing plate.
  • the printing cylinder with the printing plate is positionally corrected so that it again assumes a defined common position together with the impression cylinder at the beginning of a next printing area at 360 ° or 0 °.
  • the pressure cylinder in the pressure-free zone performs a braking movement (negative slope of the S-curve). This has the consequence that the speed profile of the correction movement of the printing cylinder in the short term goes into the negative range, pressure cylinder and impression cylinder thus briefly have opposite angular velocities.
  • the speed profile remains completely in the positive range, which means that the angular velocity of the printing cylinder has the same sign as the angular velocity of the impression cylinder.
  • FIG. 1 in principle illustrated correction of an error of a printing length is known in the art as an APM function (anti-Printenlargement-Mode) and can by the inventive method advantageously be carried out automatically.
  • APM function anti-Printenlargement-Mode
  • FIG. 2 shows two individual printed products 5, on each of which a single print mark 11 is arranged at a defined distance 12 to a sheet edge of the printed product 5.
  • Conventional register controllers use these individual print marks as reference marks to align subsequent print stations to the reference marks.
  • FIG. 3 shows a printing area 13 of a printed product 5.
  • a first print mark A from a first processing device and a second print mark B from the first processing device have been applied.
  • a first print mark C has been applied by a second processing device and a second print mark D has been applied by the second processing device.
  • printed images of the processing stations can also have been applied.
  • these prints are in the FIG. 3 not shown. It can be seen that the first print marks A, C of the two processing devices have different distances in relation to a front edge of the printed product 5 in the material flow direction 14 exhibit. Furthermore, the FIG.
  • the second print marks B, D have different distances in relation to a rear edge of the printed product 5 in the material flow direction 14.
  • the two printing marks A, B of the first processing device have smaller distances to the edges of the printed product 5, as the two print marks C, D of the second processing device. It follows that the printing length of the first processing device is greater than the printing length of the second processing device.
  • the two first marks A, C of the first and the second processing device are arranged in the region of a front edge of the printing area 13 and the two second marks B, D of the two processing devices are arranged in a rear region of the printing area 13.
  • FIG. 3 shows a state of the printed product 5 before performing the pressure correction according to the invention.
  • FIG. 4 shows the printed product 5 after a correction of the printing length according to the invention has been carried out. It can be seen that the first print marks A, C of the first and second processing devices have substantially identical spacings in relation to the second print marks B, D of the two processing devices. This means that the printing lengths of the two processing devices are corrected according to the invention or that the printing length of the second processing device has been adapted to the printing length of the first processing device.
  • different pressure lengths of the two processing devices are thus substantially compensated.
  • the method according to the invention automatically advantageously performs the pressure correction in such a way that a relative movement between the impression cylinder and the impression cylinder due to different tool lengths is carried out in the print area (area 9). This allows the different Print lengths of the individual pressure cylinders are compensated.
  • FIG. 4 Furthermore, it can be seen that by means of a preferred embodiment of the invention, a correction of the printing position can be carried out.
  • the method according to the invention is therefore characterized in that the correction is carried out automatically.
  • the pressure correction according to the invention can work much more efficiently than the conventional methods.
  • the positions of the corrected print marks C, D off FIG. 4 are merely exemplary to be seen, so that any predetermined positions of the first and second print marks C, D of the second processing device are conceivable.
  • a fixed, predeterminable position of the print marks of the first and the second processing device relative to one another is the result of the method according to the invention. From the FIG. 4 a control strategy is recognizable, which is configured such that applied by the first processing means print marks A, B are used to control printing steps of subsequent processing facilities.
  • FIG. 5 shows within the printing area 13 of a printed product 5 two print marks A, B which have been applied by the first processing device.
  • the two print marks A, B have already been printed before a processing operation in the first processing device.
  • the printed product 5 is a pre-printed with two reference print marks printing material.
  • the further control strategy is characterized in that the stations following the first processing device detect the position of the two print marks A, B of the first processing device and set their printing steps in relation to the print marks A, B.
  • this embodiment of the invention is an actuating mechanism that uses reference printing marks A, B to align the subsequent processing devices thereto.
  • An embodiment of the method according to the invention thus allows, as described above, an overall correction of a pressure in two sub-steps.
  • a first sub-step while the position of the second print marks B, D is controlled to each other (printing length correction)
  • a second sub-step the position of the first print marks A, C to each other regulated (printing position correction).
  • the described sub-steps can also be performed in reverse order to each other.
  • FIG. 6 illustrates the just described operation of a correction in a single step.
  • the first print mark A of the first processing device is not applied at 0 °, but, as in FIG. 6 represented at 120 °, generates a different slope of the pressure length-corrected curve 1b of the angle of the impression cylinder over the angle of the printing cylinder a change in position of the first print mark A.
  • this position shift is shown as a result of a change in pressure length by the position shift 1d. From the FIG. 6 It can be seen that the position shift 1d is greater according to a set of radiation-type principles, the farther away the first print mark A is applied from the position 0 °.
  • FIG. 7 shows a device 1 for pressure correction with which the inventive method can be performed.
  • the device 1 comprises a plurality of processing devices 4a, 4b, 4c in which a printed product 5 of a respective printing cylinder 6 is printed. With the help of transport devices 3, the printed product 5 is transported from one processing device 4a, 4b, 4c to the next processing device 4a, 4b, 4c.
  • a device 2 is used for detecting and evaluating the positions of the print marks on the printed products 5.
  • the device 2 may comprise, for example, a light barrier, a camera and a computing unit, which are used to supply detected correction data to the processing devices 4a, 4b, 4c.
  • Controller outputs 7 of the processing devices 4a, 4b, 4c detect a result of the pressure correction according to the invention, ie they determine whether the result of the pressure correction are print length reductions or print length extensions.
  • both the processing devices 4a, 4b, 4c and the transport device 3 can be used.
  • the transport of the printed product 5 by means of the transport device 3 takes place at a substantially constant speed, the printing cylinders 6 of the processing devices 4a, 4b, 4c performing a relative movement to the printed product 5.
  • the transport of the Drukkermaschinenisses 5 by means of the transport device 3 is carried out at a non-constant speed. This has the consequence that the transport process of the printed product 5 is corrected, which can be carried out for example by a correction of a speed control for the transport device 3.
  • the printed product 5 is fed by means of the transport device 3 to the first processing device 4a.
  • the first print mark A of the first processing device 4a and the second print mark B of the first processing device 4a are applied.
  • the printed product 5 is supplied by means of the transport device 3 to the second processing device 4b.
  • the first print mark C of the second processing device 4b and the second print mark D of the second processing device 4b is applied to the printed product 5.
  • the printed product 5 is supplied with the applied print marks A, B, C, D by means of the transport device 3 to the third processing device 4c.
  • the means 2 for detecting positions of print marks of the third processing means 4c detects the positions of the print marks A, B, C, D on the printed product 5 and evaluates the positions of the print marks A, B, C, D. If the device 2 determines that the distance of the print marks A to B deviates from the distance of the print marks C to D, this means that the effective print lengths of the first processing device 4a and the second processing device 4b are different.
  • the second processing device 4b is then activated via a controller output 7 of the third processing device 4c.
  • the impression cylinder 6 is moved by the transport means 3 or the processing means 4b in relation to the print product 5 such that the second processing means 4b is substantially identical to the first processing means 4a Print length generated on the printed product 5.
  • a parameter value for the correction movement of the second processing device 4b can be stored in the second processing device 4b, so that for all other printed products 5 during their processing by the second processing device 4b the pressure correction according to the invention is carried out automatically.
  • the second processing device 4b can be controlled via the controller output 7 of the third processing device 4c such that the positions of the first print mark C are also adapted to the position of the first print mark A of the first processing device 4a.
  • a pressure position correction is advantageously carried out in addition to the printing length correction.
  • the described correction method is not limited to a correction of the print marks C, D of only the second processing device 4b, but may extend to a plurality of different processing devices 4a, 4b, 4c. For the sake of simplicity, however, only the correction of print marks C, D of the second processing device 4b has been described above.
  • the controller outputs 7 of the processing devices 4a, 4b, 4c are checked for possible reductions in print length. If one or more printing units are present due to the printing correction according to the invention with resulting printing length reduction, the reference pressure is changed such that no printing unit due to the control / position performs a print length reduction or only a maximum predetermined print length reduction. This can be achieved, for example, by correcting the printing unit of the reference color by a suitable amount (printing length extension of the reference print).
  • the numbers indicate changes in the printing lengths of the individual processing devices 4a, 4b, 4c in millimeters, the first of the five numerical values representing a printing length change for the reference pressure.
  • a positive sign means a print length extension and a negative sign a print length shortening of a following processing device 4a, 4b, 4c. Therefore, before applying the improved algorithm, a maximum print length change includes a 3mm print length reduction (previously: from 0mm to -3mm). After applying the improved algorithm, the Change in print length no reduction in print length. (After: from + 3mm to +4mm).
  • a modification of the algorithm can result in the reference pressure being changed in such a way that at least an absolute reduction in the maximum reduction of the printing length in the machine results.
  • the reference pressure is printed such that reductions in printing no longer occur for subsequent prints of subsequent processing devices 4a, 4b, 4c.
  • An improvement of the printed image is thereby supported in an advantageous manner.
  • the method according to the invention can advantageously be carried out with different types of processing devices 4a, 4b, 4c.
  • a processing device 4a, 4b, 4c a slotter, a punch or a cross cutter can be used.
  • slot machines means 4a, 4b, 4c, the longitudinal slots in insert the printed product 5.
  • Punching means processing means 4a, 4b, 4c which perform all other slitting and cutting operations on the printed products 5, such as transverse slits, corrugations or breakouts.
  • Cross-cutters are to be understood as processing devices 4a, 4b, 4c which intersect in the transverse direction.
  • the present invention has thus been described in the foregoing description in the context of printing units as a processing device 4a, 4b, 4c, it goes without saying that the invention can be carried out as a method for a processing correction with slotter, punching and cross-cutters. This can efficiently increase the overall accuracy and overall reproducibility of a total printing process in an efficient manner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Ink Jet (AREA)
  • Measuring Fluid Pressure (AREA)
  • Printing Methods (AREA)

Claims (15)

  1. Procédé pour effectuer une correction d'impression, selon lequel
    on imprime un produit d'impression (5) au cours d'une opération effectuée par plusieurs installations de traitement (4a, 4b, 4c) ce procédé comprenant les étapes suivantes :
    - saisie des positions d'au moins deux repères d'impression prévus sur le produit (5) ;
    - exploitation des positions ;
    caractérisé par
    une correction automatisée de l'impression à l'aide de la position des repères d'impression,
    la correction comprenant la correction d'une longueur d'impression.
  2. Procédé selon la revendication 1,
    selon lequel
    la correction automatisée d'impression comprend en outre la correction d'une position d'impression.
  3. Procédé selon la revendication 1 ou 2,
    selon lequel
    au moins un premier repère d'impression est prévu dans la zone avant selon la direction de transport (14) du produit (5) et au moins un second repère d'impression est prévu dans la zone arrière ou dans la direction de transport (14) du produit (5).
  4. Procédé selon l'une des revendications 1 à 3,
    selon lequel
    deux installations de travail (4a, 4b, 4c) appliquent deux repères d'impression sur le produit (5),
    le premier repère d'impression étant appliqué par une première installation de travail (4a) et le second repère d'impression étant appliqué par une seconde installation de travail (4b).
  5. Procédé selon la revendication 4,
    selon lequel
    à l'aide du repère d'impression appliqué par la première installation de travail (4a) on règle d'autres installations de travail (4b, 4c) au cours de l'exécution du travail de façon que les repères d'impression soient appliqués dans une position relative, fixe, sur le produit (5).
  6. Procédé selon la revendication 4 ou 5,
    selon lequel
    on régule les positions des premiers repères d'impression les unes par rapport aux autres et les positions des seconds repères d'impression les unes par aux autres.
  7. Procédé selon la revendication 1,
    selon lequel
    au cours de l'opération de travail seule la première installation de travail (4a) applique les deux repères d'impression.
  8. Procédé selon la revendication 7,
    selon lequel
    les installations de travail (4b, 4c) qui sont en aval de l'opération effectuée par la première installation de travail (4a) sont réglées à l'aide des repères d'impression appliqués.
  9. Procédé selon l'une des revendications 1 à 8,
    selon lequel
    à l'aide des repères d'impression on détermine des longueurs d'impressions absolues pour les différentes installations de travail (4a, 4b, 4c).
  10. Procédé selon l'une des revendications précédentes,
    selon lequel
    on modifie les positions locales des repères d'impression sur le produit (5).
  11. Procédé selon l'une des revendications précédentes,
    comprenant en outre les étapes de procédé suivantes :
    - application d'une impression de référence sur le produit (5) à l'aide de la première installation de travail (4a) ;
    - vérification des sorties de régulation (7) des installations de travail (4b, 4c) pour d'éventuels raccourcissements de longueur d'impression ; et
    - modification de l'impression de référence en cas de raccourcissement de la longueur d'impression de sorte que comme correction de longueur d'impression pour les installations de travail (4b, 4c) en aval on a uniquement des allongements de longueur d'impression.
  12. Procédé selon la revendication 11,
    selon lequel
    la modification de l'impression de référence est conçue pour que les raccourcissements de longueur d'impression résultant des corrections de longueur d'impression soient limités en amplitude.
  13. Dispositif (1) de correction d'impression,
    dans lequel
    le dispositif (1) comprend une installation (2) pour saisir les positions d'au moins deux repères d'impression sur un produit (5),
    au moins un premier repère d'impression se situe dans la zone avant selon la direction de transport (14) du produit (5) et au moins un second repère d'impression se situe dans la zone arrière selon la direction de transport (14) du produit (5),
    caractérisé en ce que
    on effectue une correction automatisée de l'impression, à l'aide d'une installation de correction (3, 4a, 4b, 4c), et
    la correction automatisée est une correction de longueur d'impression
  14. Dispositif selon la revendication 13,
    dans lequel
    on effectue une correction automatisée de l'impression, à l'aide de l'installation de correction (3, 4a, 4b, 4c), et
    la correction automatisée comprend en outre une correction de position d'impression.
  15. Dispositif selon la revendication 13 ou 14,
    selon lequel
    comme installation de correction (3, 4a, 4b, 4c) le dispositif comporte une installation de transport (3) et/ou une installation de travail (4a, 4b, 4c).
EP05028390A 2005-02-18 2005-12-23 Méthode et appareil pour appliquer une correction d'impression Not-in-force EP1693199B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005007435A DE102005007435A1 (de) 2005-02-18 2005-02-18 Verfahren zum Durchführen einer Druckkorrektur und Vorrichtung hierfür

Publications (4)

Publication Number Publication Date
EP1693199A2 EP1693199A2 (fr) 2006-08-23
EP1693199A3 EP1693199A3 (fr) 2007-01-17
EP1693199B1 true EP1693199B1 (fr) 2008-10-15
EP1693199B2 EP1693199B2 (fr) 2013-01-16

Family

ID=36297320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05028390A Not-in-force EP1693199B2 (fr) 2005-02-18 2005-12-23 Méthode et appareil pour appliquer une correction d'impression

Country Status (6)

Country Link
US (1) US7337035B2 (fr)
EP (1) EP1693199B2 (fr)
JP (1) JP2006224673A (fr)
AT (1) ATE411174T1 (fr)
DE (2) DE102005007435A1 (fr)
ES (1) ES2315784T5 (fr)

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TWI592080B (zh) * 2014-12-24 2017-07-11 Komori Corp Electronic circuit printing method and device
JP6486676B2 (ja) * 2014-12-24 2019-03-20 株式会社小森コーポレーション 電子回路の印刷方法および装置
JP2018510798A (ja) * 2015-04-10 2018-04-19 オメット エス．アール．エル． 手動調節可能な印刷見当合せ器を具備した輪転印刷機の印刷ユニットを見当合せするためのシステム
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JP3729485B2 (ja) * 2000-07-14 2005-12-21 大日本スクリーン製造株式会社 製版機構を備えた印刷装置
US6591746B2 (en) * 2001-06-13 2003-07-15 Hurletron, Incorporated Registration system for printing press
DE10139310B4 (de) * 2001-08-09 2010-11-25 Eastman Kodak Co. Verfahren zum Ermitteln von START OF FRAME-Korrekturdaten und START OF LINE-Korrekturdaten zur Registereinstellung für Druckmaschinen beim Mehrfarbdruck
DE10246072B4 (de) * 2001-10-31 2009-02-12 Heidelberger Druckmaschinen Ag Rotationsdruckverfahren für Mehrfarbendruck
DE10241609A1 (de) 2002-09-07 2004-03-18 Nexpress Solutions Llc Verfahren und Steuerungseinrichtung zum Bestimmen eines Registerfehlers
DE10339655A1 (de) * 2002-09-13 2004-03-25 Heidelberger Druckmaschinen Ag Verfahren zur Kompensation von Passerdifferenzen beim Betreiben einer Druckmaschine
US6810813B2 (en) * 2003-03-14 2004-11-02 Heidelberger Druckmaschinen Ag Device and method for controlling registration in a printing press
JP4605747B2 (ja) * 2003-10-17 2011-01-05 株式会社ミヤコシ バリアブル印刷機における印刷方法

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ES2315784T5 (es) 2013-05-14
DE502005005683D1 (de) 2008-11-27
JP2006224673A (ja) 2006-08-31
ES2315784T3 (es) 2009-04-01
EP1693199A2 (fr) 2006-08-23
DE102005007435A1 (de) 2006-08-24
ATE411174T1 (de) 2008-10-15
EP1693199B2 (fr) 2013-01-16
EP1693199A3 (fr) 2007-01-17
US7337035B2 (en) 2008-02-26
US20060271230A1 (en) 2006-11-30

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