EP3205500A2 - Procédé de compensation de défauts de repérage et d'application spécifiques à la machine et erreur de repérage - Google Patents

Procédé de compensation de défauts de repérage et d'application spécifiques à la machine et erreur de repérage Download PDF

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Publication number
EP3205500A2
EP3205500A2 EP16204203.0A EP16204203A EP3205500A2 EP 3205500 A2 EP3205500 A2 EP 3205500A2 EP 16204203 A EP16204203 A EP 16204203A EP 3205500 A2 EP3205500 A2 EP 3205500A2
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EP
European Patent Office
Prior art keywords
machine
parameters
printing
register
model
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.)
Granted
Application number
EP16204203.0A
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German (de)
English (en)
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EP3205500B1 (fr
EP3205500A3 (fr
Inventor
Martin Mayer
Dr. Bernhard Buck
Dr. Axel Hauck
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Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/16—Programming systems for automatic control of sequence of operations

Definitions

  • the present invention relates to a method and a device for model-based compensation of job-specific and machine-specific registration inaccuracies and registration errors in the prepress stage of a printing process.
  • the invention is in the technical field of offset printing.
  • the geometry errors of the printed image ie the registration inaccuracies of the individual color separations and register errors of the printed image itself, as well as plate distortions
  • adjusting devices of the printing press usually include side, circumferential and diagonal registers, as well as plate distortion devices. They are connected to the plate cylinder and cause a slight positional correction of the cylinder. With these adjustment therefore smaller deviations in the printed image can be corrected. Larger deviations, however, can not be corrected as a matter of principle, in particular in the case of the diagonal register, since the position correction of the cylinders in the printing machine is possible only to a certain extent.
  • the vote of the various adjustment for the printer is a complicated process that can be performed only by appropriately trained personnel and also the adjustment itself is correspondingly time-consuming, since after each new setting proofs are necessary, which also lead to increased waste.
  • German patent application DE 10 2012 020 238 A1 discloses a method for exposing a printing form, in which a transformation rule is calculated in advance before a first exposure of a printing form, wherein the intended area coverage of the printing material is used as a process parameter to calculate the transformation rule and the transformation rule is calculated in proportion to the area coverage.
  • Decisive point of the method according to the invention is that a mathematical model for the prediction of possible occurring geometry errors, that is local registration inaccuracies and register errors, created.
  • the model describes the influencing variables occurring during the printing process and also contains parameters which also influence registration inaccuracies and register errors and can be differentiated into machine, process and material parameters. It only has to be created once and can then be used again and again for the specific printing press. Only the parameters, in particular the material and Process parameters that depend on the respective print job must each be redetermined for a new print job.
  • the predictive model consists of transformation equations which contain the corresponding influencing variables and parameters.
  • a preferred development of the method according to the invention is that the order-specific registration inaccuracies and registration errors of material influencing variables, such as type of substrate, grammage of the substrate, structure of the substrate and stiffness of the substrate, as well as process variables such as color of the subject and tack of the color, as well as order-specific machine influence variables, such as color sequence, temperature of the machine and printing speed, which are included in the model in the form of corresponding parameters.
  • the order-specific machine influencing variables include those parameters which, although machine-specific, are also clearly dependent on the order data.
  • the color order depends directly on the order data, the temperature of the machine and the printing speed are at least indirectly dependent on the order data.
  • a further preferred development of the method according to the invention is that the machine-specific registration inaccuracies and registration errors depend on machine influence variables that reflect the effect of installation positions of, for example, the plate clamping rails or of transfer elements and tolerances, for example, the development and in the form of corresponding parameters in the model input.
  • the machine parameters must be determined by measurements, quantified and then incorporated into the mathematical prediction model or in its transformation equations.
  • machine influencing variables quantified in the form of machine parameters, in turn influence the process and material parameters.
  • the machine influence variables can influence the process and material parameters. This must be taken into account in the predictive model.
  • a further preferred development of the method according to the invention is that the machine parameters are already present when carrying out the method for model-based compensation, in that they are already quantified during the production and / or delivery of the printing press.
  • machine parameters do not depend on the order data, they can already be determined as part of commissioning tests, both as part of production and when delivered. All you have to do is to provide the calculator, which uses the workflow system, with the predictive model. However, an update of the machine parameter set over the operating time of the printing press is recommended, as certain machine parameters may change over time.
  • a further preferred development of the method according to the invention is that the parameters are taught in over several printing processes. Quantifying the parameters for the predictive model should be done for several fault tolerances, eg due to measurement errors, so that the model can be trained accordingly. Since several test prints must be carried out anyway before each print job, there is no need for additional expenditure, eg in the form of waste paper. The principle applies to all parameter classes.
  • a further preferred development of the method according to the invention is that the method according to the invention compensates for registration inaccuracies and register errors, whereby register adjustments with at least one of the register adjustment devices in the printing process are replaced.
  • the method according to the invention compensates for registration inaccuracies and register errors, whereby register adjustments with at least one of the register adjustment devices in the printing process are replaced.
  • a further preferred development of the method according to the invention is that geometry errors which are based on a constant interference influence are corrected by a static time-independent compensation. If the influencing variables which cause the geometric deviations are constant, for example a constant printing speed, the compensation is carried out statically. Static means that the distortion is time-independent and the Compensation remains constant for all subsequent printing units and regardless of the elapsed time.
  • a further preferred development of the method according to the invention is that geometry errors which are based on dynamic time-dependent disturbing influences are detected by a time-variant model and corrected by a time-dependent compensation.
  • the influencing variables which cause the geometrical deviations are time-dependent, such as the heat transfer, then the deformation at the time of the printing process in the individual printing units is to be determined via a time-variant model and exactly for this period by modifying the digital printing data before the printing process Create the printing plates, compensate.
  • a further preferred embodiment of the method according to the invention is that the method is integrated into the workflow for processing the printing process and the determination of the influencing variables of the model and the calculation and implementation of the compensation are performed automatically by the computer. Since the calculation and compensation is performed before the printing process is carried out, it is natural to integrate them into the computer and software-based control process of the printing press, which is performed by a workflow system.
  • the workflow system guides the user through the complete digital preliminary stage of the printing process, in which the print data are created and modified as part of the compensation, to the forwarding of the modified print data to the platesetter for the production of the modified printing plates for processing the print job.
  • the control computer of the press automatically determines the influencing variables of the model.
  • the basic configuration is visible to the user and can be manually adjusted depending on the version.
  • Such a sheet-fed offset printing press is able to implement significantly shorter set-up times for the printing press by means of the associated correction data record for the digital prepress. Since the mechanical register adjustment devices for circumferential, lateral and diagonal registers no longer have to be actuated by the modified print image data in the preliminary stage, such a sheet-fed offset printing press is much easier and faster to adjust than a sheet-fed offset printing press known from the prior art.
  • a preferred development of the sheet-fed offset printing machine according to the invention is that in the sheet-fed offset printing machine at least one register adjustment is replaced by a method according to one of the preceding claims, wherein the at least one register adjustment can be 9.registerverstell respondeden, Diagonalregisterverstell respondeden or machinessregisterverstell respondeden.
  • the Registerverstell respondeden be omitted because they are largely superfluous by the use of the method according to the invention in which occurring geometric errors in the form of Passer- and register inaccuracies are already corrected in the preliminary stage.
  • side register adjustment devices, diagonal register adjustment devices or circumferential register adjustment devices can be omitted. Even omitting several of these register adjustment devices or even all is possible.
  • a further preferred development of the sheet-fed offset printing machine according to the invention is that it dispenses with register-relevant adjustments, in particular the grading of printing cylinder diameters and the exact alignment of the plate clamping rails, in the assembly process and these disturbances are compensated by the method according to the invention.
  • passerrelevante adjustments such as the gradation of printing cylinder diameters and the exact alignment of the plate clamping rails, the are necessary in the assembly process of the printing press, superfluous by the use of the method according to the invention.
  • a further solution to this problem is a data set for a sheet-fed offset printing press according to the preceding claims.
  • the data record is in digital form and contains a register and register profile specific to the sheet-fed offset printing machine, which depends on all relevant machine parameters of the sheet-fed offset printing press and the workflow system provided for print order processing.
  • the data record contains the already existing machine parameters. It is preferably delivered with the printing press and is then available to the computer of the workflow system for implementing the method for model-based compensation for job-specific and machine-specific registration inaccuracies and register errors in the prepress stage.
  • the dataset should also be updated at regular intervals by re-learning the machine parameters.
  • the inventive method in its preferred embodiment is in FIG. 3 shown.
  • the mathematical prediction model 7 if not yet available, to be created. It consists of several Transformation equations, for example, in each case an equation for the expansion of the printing substrate transversely and longitudinally to the printing direction, for which in particular the material parameters 13, but also the printing process parameters 12 and the machine-specific parameters 11 are important.
  • the latter parameters 11 are each dependent on the type of the printing machine 1.
  • a sheet-fed offset printing machine 1, as used in the preferred embodiment has other machine-specific parameters 11, or other weighting factors between the parameters than, for example, a web offset printing press.
  • the prediction model 7 can be adapted for each type of printing press. Once prediction model 7 has been created, it can be used for a wide variety of print jobs.
  • each printing press 1 also has slightly different values for the parameters 10, depending also on the ambient conditions.
  • at least one trial print is carried out, from which the parameters 10 of the prediction model 7 are determined, for example, by the control computer 8 of the printing press 1 and the computer 17 on which the workflow system 9 runs as a digital preliminary stage of the printing process and into which Prediction model 7 is integrated, provided. This can be done automatically by the control computer 8 of the printing machine 1 or by a user.
  • the preferred construction of the system described is in FIG. 2 to see.
  • the prediction model 7 runs on the computer of the digital pre-stage 17. It is also possible in another embodiment that the control of the printing press 1 and the digital pre-stage run on the same computer.
  • the parameters 10 must be taught in one or more proofs. The proofs can be done during the run of a new print job. It is not necessarily a separate test print only for teaching the predictive model 7 are performed. Once parameters 10 have been learned, they are then used for various print jobs. In addition, they can also be determined in a further embodiment variant during the manufacture or commissioning of the printing press 1 at the customer. This is particularly useful for the machine parameters 11. this they are then provided in the form of a data record.
  • the geometrical deviations ie registration and register errors 14 are predicted for the current print job on the printing press 1 used with the prediction model 7.
  • these values can be used to initiate countermeasures in the digital precursor.
  • the digital print data 16 are manipulated in accordance with the determined or predicted errors 14 in order to compensate for these errors 14.
  • the printed image 16 is compressed at this point and thus the error is compensated.
  • the register adjustment devices 4, 5, 6 on the printing press 1 can thus even be omitted completely or at least partially.
  • FIG. 1 are the different register adjustment 4, 5, 6 still once shown schematically in an abstract representation of an exemplary printing unit 2. They are connected to the plate cylinder 3 and cause a slight positional correction of the cylinder. 3

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Color Image Communication Systems (AREA)
EP16204203.0A 2016-01-18 2016-12-15 Procédé de compensation de défauts de repérage et d'application spécifiques à la machine et erreur de repérage Active EP3205500B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016000335.9A DE102016000335A1 (de) 2016-01-18 2016-01-18 Verfahren zur Kompensation auftrags- und maschinenspezifischer Passerungenauigkeiten und Registerfehler

Publications (3)

Publication Number Publication Date
EP3205500A2 true EP3205500A2 (fr) 2017-08-16
EP3205500A3 EP3205500A3 (fr) 2017-11-08
EP3205500B1 EP3205500B1 (fr) 2018-11-28

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EP16204203.0A Active EP3205500B1 (fr) 2016-01-18 2016-12-15 Procédé de compensation de défauts de repérage et d'application spécifiques à la machine et erreur de repérage

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EP (1) EP3205500B1 (fr)
CN (1) CN107042683B (fr)
DE (1) DE102016000335A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112078243A (zh) * 2019-06-13 2020-12-15 海德堡印刷机械股份公司 经简化的纸张延展测量
CN117246042A (zh) * 2023-10-18 2023-12-19 杭州临安通达装饰材料有限公司 同步对版压花装饰纸印刷设备及印花方法
CN118226793A (zh) * 2024-05-23 2024-06-21 无界融合(吉林)科技有限公司 一种自动同步的工位控制方法和系统
US12473169B2 (en) * 2021-09-30 2025-11-18 Siemens Aktiengesellschaft Measurement value correction of a reference mark on a material web

Families Citing this family (4)

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DE102017115145A1 (de) * 2017-07-06 2019-01-10 Manroland Goss Web Systems Gmbh Verfahren und Steuerungseinrichtung zum Betreiben einer Druckmaschine
DE102021102848A1 (de) * 2020-03-11 2021-09-16 Heidelberger Druckmaschinen Aktiengesellschaft Vom Transportwagen gesteuerter Druckplatten-Workflow
CN113910792B (zh) * 2021-09-30 2023-03-21 安徽天翔高新特种包装材料集团有限公司 卫星式柔版印刷机的套印方法
CN117445535B (zh) * 2023-12-21 2024-04-16 宝鸡恒盛达工贸有限公司 一种包装纸箱生产用平版印刷机及控制系统

Citations (2)

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DE19724066A1 (de) 1997-06-07 1998-12-10 Roland Man Druckmasch Verfahren zur Korrektur von Geometriefehlern bei der Übertragung von Informationen auf einen Bedruckstoff
DE102012020238A1 (de) 2011-11-14 2013-05-16 Heidelberger Druckmaschinen Ag Verfahren zur Belichtung einer Druckform

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ATE414609T1 (de) * 2000-05-17 2008-12-15 Eastman Kodak Co Verfahren zur einstellung des registers bei einer mehrfarbendruckmaschine
DE102006050208A1 (de) * 2006-10-25 2008-04-30 Heidelberger Druckmaschinen Ag Verfahren zur Kompensation schwingungsbegründeter Umfangsregisterfehler in einer Bogendruckmaschine
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Publication number Priority date Publication date Assignee Title
DE19724066A1 (de) 1997-06-07 1998-12-10 Roland Man Druckmasch Verfahren zur Korrektur von Geometriefehlern bei der Übertragung von Informationen auf einen Bedruckstoff
DE102012020238A1 (de) 2011-11-14 2013-05-16 Heidelberger Druckmaschinen Ag Verfahren zur Belichtung einer Druckform

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112078243A (zh) * 2019-06-13 2020-12-15 海德堡印刷机械股份公司 经简化的纸张延展测量
US12473169B2 (en) * 2021-09-30 2025-11-18 Siemens Aktiengesellschaft Measurement value correction of a reference mark on a material web
CN117246042A (zh) * 2023-10-18 2023-12-19 杭州临安通达装饰材料有限公司 同步对版压花装饰纸印刷设备及印花方法
CN118226793A (zh) * 2024-05-23 2024-06-21 无界融合(吉林)科技有限公司 一种自动同步的工位控制方法和系统

Also Published As

Publication number Publication date
EP3205500B1 (fr) 2018-11-28
CN107042683B (zh) 2020-04-21
CN107042683A (zh) 2017-08-15
DE102016000335A1 (de) 2017-07-20
EP3205500A3 (fr) 2017-11-08

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