EP1384580A1 - Procédé et dispositif pour réglage des registres d'une machine à imprimer - Google Patents

Procédé et dispositif pour réglage des registres d'une machine à imprimer Download PDF

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Publication number
EP1384580A1
EP1384580A1 EP02017003A EP02017003A EP1384580A1 EP 1384580 A1 EP1384580 A1 EP 1384580A1 EP 02017003 A EP02017003 A EP 02017003A EP 02017003 A EP02017003 A EP 02017003A EP 1384580 A1 EP1384580 A1 EP 1384580A1
Authority
EP
European Patent Office
Prior art keywords
print image
printing
image
target
actual
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.)
Withdrawn
Application number
EP02017003A
Other languages
German (de)
English (en)
Inventor
Dieter Dipl. Ing. Neuhäuser
Wolfgang Dipl. Ing. Dahm
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.)
serv-o-tec Druck- und Papierverarbeitungsmaschinen GmbH
Original Assignee
serv-o-tec Druck- und Papierverarbeitungsmaschinen GmbH
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
Application filed by serv-o-tec Druck- und Papierverarbeitungsmaschinen GmbH filed Critical serv-o-tec Druck- und Papierverarbeitungsmaschinen GmbH
Priority to EP02017003A priority Critical patent/EP1384580A1/fr
Publication of EP1384580A1 publication Critical patent/EP1384580A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices
    • B41F13/14—Registering devices with means for displacing the cylinders
    • 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
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/10—Starting-up the machine
    • B41P2233/13—Pre-registering

Definitions

  • Multi-color printing presses have a so-called register arrangement, which is formed from a plurality of individual registers. each this register is used to adjust a printing cylinder for the application of a Printing ink on the carrier medium to be printed.
  • CMYK complementary metal-oxide-semiconductor
  • C cyanate
  • M Mangenta
  • Y Yellow
  • K Black
  • Raster marks work. These raster marks need a white background and are mostly rectangular boxes, which are printed with one ink each are.
  • the invention proposes a process in which the Print result recorded optically and as an actual print image with a previously saved one
  • the target print image is compared, in the event of a discrepancy a corresponding one between the target print image on the one hand and the actual print image on the other
  • the registers are set automatically.
  • the printing result becomes continuous in the current printing process checked.
  • a target print image is stored as a benchmark, that it is necessary to achieve with the current printing process.
  • the print image actually generated by the printing press this is optically recorded and as an actual print image with the specified target print image compared. If this comparison reveals that there is a discrepancy between the predetermined target print image and the actual print image recorded in the current printing process is present, the register setting of the printing press becomes Correction of this deviation set accordingly.
  • Another significant advantage of the method according to the invention is that Justified the fact that also caused by a starting process Reject production can be reduced dramatically. Trials have shown that a reduction in scrap production of up to 90% can be achieved. The reason for this enormous reduction in reject production is almost completely dispensing with manual register setting even within the scope of a Starting process of the printing press.
  • the starting point is also here predetermined target print image, the receipt of which is described in more detail below will be. This target print image is with the actual print image, which during the Starting process is optically detected, compared and the resulting Deviations are, as described above, by a corresponding one Register setting compensated.
  • the invention proposes a method that is ongoing Printing process a constant control of what is generated by the printing press Print image carried out and using a predetermined target print image an automatic register setting in such a way that deviations between the actual print image actually generated by the printing press on the one hand and the specified target print image on the other hand be kept as low as possible.
  • the method according to the invention thus helps simultaneous achievement of a desired printing result, the Reduce scrap production.
  • the use of raster marks is for the Implementation of the method according to the invention is not necessary, so that with the procedure a register setting also for such printing processes in is advantageously possible, the use of due to the printed image Exclude grid marks.
  • the registers the printing press manually in a one-off start-up process can be set and the result of this register setting Print results are recorded optically and saved as a target print image. Intended is therefore to carry out a one-off start-up process manually, the for The print result that was found to be good is then saved as the target print image and as Reference size is used for further printing. It is advantageous it is possible to start the process to determine the target print image and separate subsequent printing processes later. So can For example, a start-up process to determine the target print image is carried out are, this target print image not only following the starting process Printing process, but also subsequent printing processes at different times is available in the same way.
  • the process according to the invention is advantageous in short print runs, since the target print image specification once recorded and stored again and again used and to achieve a reproducible result again can be used.
  • the Printing machine after any necessary conversion using of the existing target print image as a benchmark within a comparatively time and material-consuming start-up process set become.
  • Another advantage is that the printing results are two from each other Printing processes carried out separately, using the same target print image as a reference variable use, are almost identical, so that quality deviations in Print result even when separated from one another or on different ones Printing operations performed printing machines advantageously not occur.
  • the individual registers are activated the printing press not by the number of registers used is limited, so that almost regardless of the number of to be set Register with the inventive method a very fast Register setting can be achieved automatically.
  • the use is manual Work steps to be carried out reduced to a minimum, so that in Difference from the state of the art in the manual work to be performed can be reduced per printing process.
  • the optical detection takes place both the target print image and the actual print image using an image capture unit, preferably a scanner.
  • an image capture unit preferably a scanner.
  • Another one is also conceivable here Type of optical image capture, for example using a digital camera.
  • the only decisive factor is that the actual printed image is recorded in such a way can be that with regard to the quality characteristics decisive for the printing result
  • Corresponding data usable by a computer unit are supplied become.
  • the actual print image is preferably acquired here line by line, it does not matter that the continuously from the Rather, printing machine issued print media per print image it is sufficient to take the optical print image acquisition at any time to start and depending on the printing speed at a time finish, which is determined by the fact that the print carrier over the length at least a print image in the printing direction of the machine on the image capture unit was passed by.
  • the computer unit connected to the printing press can then the captured print image with respect to the actual print image start or Convert the actual print end so that the desired actual print image for the further implementation of the method according to the invention is available.
  • Target print image and actual print image at least one test area within the print image defined and a comparison between target and actual print image is only based on of this test area.
  • Test areas Such areas are called referred to as so-called test areas, the use of test areas den has great advantage that the inventive method much faster can be carried out.
  • a comparison test between target and actual print images delivers sufficiently precise results based on the test areas so that a Comparison test between target print images and actual print images only on the basis of predefined ones Test area is sufficient to avoid deviations in the desired print result to recognize and make appropriate register settings.
  • the test area with regard to their size and position within the printed image is defined in such a way that this comprises at least one color boundary running in the printed image.
  • a meaningful comparison criterion is particularly suitable for the course of a Color limit, because blurring in the printed image is clearly detected on the basis of this limit and specifications for readjustment of the registers can be calculated exactly can be.
  • the inside of the Color boundary test performed a color boundary analysis, wherein the colors of the printed image detected at the color limit with regard to their composition analyzed from the individual inks in the register become.
  • the aim of the color boundary analysis is that with the optical image acquisition recognized color composition of the printed image in the applied printing inks disassemble. With the color boundary analysis, a "back calculation" is found the printing inks used instead. A comparison of the actual print image and the target print image can now use these inks determined by the color limit analysis be carried out, with a comparison both in terms of by the respective printing color to be produced as well as with respect to the intensity can take place.
  • a color boundary analysis it can be the result of a color boundary analysis be that the print image generated by a certain ink is incorrectly positioned is applied to the print carrier and, for example, in relation to the the color boundary in the test area is too far to the left.
  • a register setting can be such that the print image produced by this printing ink in its Position is shifted slightly to the right, so that in the following The correct printing of the respective print image takes place, which in turn can also be recognized by a color boundary analysis.
  • the registers were set both in the direction of rotation and transverse to it. It is therefore possible that print images generated from the printing sleeves arranged in the respective registers both in the production direction of the printing press, i.e. in the direction of rotation as well as crosswise to adjust so that printed images with respect to each Point can be set in a Cartesian coordinate system.
  • the registers can advantageously be provided be the deviation determined by a color boundary analysis by one or to determine several points in the Cartesian coordinate system exactly and from there to calculate the readjustment of the register.
  • an upstream Process step determines the color intensity of the printing inks in the register. This is preferably done by a separate imprint of the individual colors in the register. These can then be obtained from the image acquisition unit recorded and stored in terms of their intensity as a reference variable become.
  • This upstream process step is preferably carried out at a only carried out reduced speed of the print carrier, so that the production of rejects can be kept low. Just like the one-off start of the printing press for determining a target print image is also the determination the color intensity only once. The results obtained can, however, continue for a variety of downstream printing processes be used.
  • the device is a to solve the aforementioned problem Device for performing the method proposed, with an optical Image acquisition unit, preferably a scanner, a storage unit and a control device that continuously uses the image capture unit to print the image recorded during the printing process and that with a comparison unit the captured actual print image with the one stored in the storage unit Comparing the target print image and, if the values are not equal, a corresponding setting the register makes.
  • an optical Image acquisition unit preferably a scanner, a storage unit and a control device that continuously uses the image capture unit to print the image recorded during the printing process and that with a comparison unit the captured actual print image with the one stored in the storage unit Comparing the target print image and, if the values are not equal, a corresponding setting the register makes.
  • the essential components of the device according to the invention are the image acquisition unit, the storage unit and the control device.
  • Image capture unit With the help of Image capture unit, the current print image is captured.
  • This actual print image is compared to a target print image using the control device, that is determined in a start-up procedure previously carried out and as a reference variable is available and stored in the storage unit is.
  • the comparison between the actual print image and the target print image is used of the above-described method according to the invention, wherein in If an inequality is found, the control device of the invention Device ensures that a control element provided for this purpose makes a corresponding setting of the register of the printing press, so that the inequality between the actual print image on the one hand and the target print image on the other is balanced.
  • the printing press 11 includes one Control device 13, which in turn is a scanner 4, a comparison unit 5 and a storage unit 7.
  • the scanner 4, the comparison unit 5 and the storage unit 7 are in communication with one another Connection, wherein the scanner 4 on the print carrier 1 from the Printing machine applied optically detected print image 12 and as an actual print image 9 the comparison unit 5 transmits.
  • the storage unit 7 transmits to the Comparison unit a target print image 8, so that the comparison unit 5 in one Comparison test of the actual print image 9 supplied by the scanner on the one hand and that of the target print image 8 supplied to the storage unit 7 on the other hand can compare.
  • the register arrangement is triggered 10 3.
  • Those registers of register arrangement 3 are set here their printing colors or the resulting individual print images as different were recognized by the target print image 8.
  • a setting of the individual registers the register arrangement 3 can here both in the direction of rotation 6 Direction of transport of the print medium 1 and transversely thereto, so that a Readjustment of the registers of the register arrangement 3 in order to achieve a Desired print image 12 can be performed exactly.
  • the printing press 11 equipped with the device according to the invention allows using the method according to the invention advantageously a time-optimized readjustment of the register arrangement 3, so that a reject production due to an adjustment of the register arrangement 3 in progress Printing process as well as in particular during a start-up process advantageously can be prevented. This increases productivity and effectiveness of the printing press 11.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP02017003A 2002-07-27 2002-07-27 Procédé et dispositif pour réglage des registres d'une machine à imprimer Withdrawn EP1384580A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02017003A EP1384580A1 (fr) 2002-07-27 2002-07-27 Procédé et dispositif pour réglage des registres d'une machine à imprimer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02017003A EP1384580A1 (fr) 2002-07-27 2002-07-27 Procédé et dispositif pour réglage des registres d'une machine à imprimer

Publications (1)

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EP1384580A1 true EP1384580A1 (fr) 2004-01-28

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004096546A1 (fr) * 2003-05-02 2004-11-11 Koenig & Bauer Aktiengesellschaft Dispositifs pour régler au moins un registre d'une presse
EP1593513A3 (fr) * 2004-05-04 2008-03-05 Koenig & Bauer Aktiengesellschaft Dispositifs à imprimer avec au moins deux feuilles colorées et porteuses de substance d'impression
EP2127876A1 (fr) * 2008-05-26 2009-12-02 BST International GmbH Procédé et dispositif de réglage d'une image d'impression produite par une presse rotative
EP1759844A3 (fr) * 2005-09-02 2011-03-23 Bosch Rexroth Aktiengesellschaft Procédé pour corriger l'impression
EP3771564A1 (fr) * 2019-08-02 2021-02-03 Bundesdruckerei GmbH Dispositif d'inspection d'impression et procédé d'inspection optique d'une image imprimée d'un objet imprimé

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023299A1 (fr) * 1979-07-26 1981-02-04 Siemens Aktiengesellschaft Procédé et dispositif pour ajuster le registre de machines à imprimer en creux
WO1988007449A1 (fr) * 1987-03-26 1988-10-06 Koenig & Bauer Aktiengesellschaft Procede pour positionner des cylindres de plaque dans une presse rotative pour impression en plusieurs couleurs
US5816151A (en) * 1995-09-29 1998-10-06 Goss Graphic Systems, Inc. Device for alignment of images in a control system for a printing press
EP0993947A1 (fr) * 1998-10-15 2000-04-19 Eltromat Gesellschaft Fur Industrie-Elektronik Mbh Procédé et dispositif pour mesurer optiquement la position d'impression et/ou la déviation de registre entre les différentes couleurs dans une machine à imprimer en plusieurs couleurs
US6112658A (en) * 1999-02-25 2000-09-05 George Schmitt & Company, Inc. Integrated and computer controlled printing press, inspection rewinder and die cutter system
DE19914913A1 (de) * 1999-04-01 2000-10-26 Heidelberger Druckmasch Ag Verfahren zur Ermittlung von Überfüllungsparametern
DE10100850A1 (de) * 2001-01-11 2002-07-18 Roland Man Druckmasch Verfahren und Vorrichtung zur Herstellung von Druckprodukten unter Verwendung einer Druckereiaustattung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023299A1 (fr) * 1979-07-26 1981-02-04 Siemens Aktiengesellschaft Procédé et dispositif pour ajuster le registre de machines à imprimer en creux
WO1988007449A1 (fr) * 1987-03-26 1988-10-06 Koenig & Bauer Aktiengesellschaft Procede pour positionner des cylindres de plaque dans une presse rotative pour impression en plusieurs couleurs
US5816151A (en) * 1995-09-29 1998-10-06 Goss Graphic Systems, Inc. Device for alignment of images in a control system for a printing press
EP0993947A1 (fr) * 1998-10-15 2000-04-19 Eltromat Gesellschaft Fur Industrie-Elektronik Mbh Procédé et dispositif pour mesurer optiquement la position d'impression et/ou la déviation de registre entre les différentes couleurs dans une machine à imprimer en plusieurs couleurs
US6112658A (en) * 1999-02-25 2000-09-05 George Schmitt & Company, Inc. Integrated and computer controlled printing press, inspection rewinder and die cutter system
DE19914913A1 (de) * 1999-04-01 2000-10-26 Heidelberger Druckmasch Ag Verfahren zur Ermittlung von Überfüllungsparametern
DE10100850A1 (de) * 2001-01-11 2002-07-18 Roland Man Druckmasch Verfahren und Vorrichtung zur Herstellung von Druckprodukten unter Verwendung einer Druckereiaustattung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004096546A1 (fr) * 2003-05-02 2004-11-11 Koenig & Bauer Aktiengesellschaft Dispositifs pour régler au moins un registre d'une presse
US7513196B2 (en) 2003-05-02 2009-04-07 Koenig & Bauer Aktiengesellschaft Devices for controlling at least one register in a printing machine
CN100493909C (zh) * 2003-05-02 2009-06-03 柯尼格及包尔公开股份有公司 用于调整印刷机中至少一个规矩的装置
EP1593513A3 (fr) * 2004-05-04 2008-03-05 Koenig & Bauer Aktiengesellschaft Dispositifs à imprimer avec au moins deux feuilles colorées et porteuses de substance d'impression
EP1759844A3 (fr) * 2005-09-02 2011-03-23 Bosch Rexroth Aktiengesellschaft Procédé pour corriger l'impression
EP2127876A1 (fr) * 2008-05-26 2009-12-02 BST International GmbH Procédé et dispositif de réglage d'une image d'impression produite par une presse rotative
EP3771564A1 (fr) * 2019-08-02 2021-02-03 Bundesdruckerei GmbH Dispositif d'inspection d'impression et procédé d'inspection optique d'une image imprimée d'un objet imprimé

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