EP1752292A2 - Système pour contrôler la qualité d'une machine à imprimer - Google Patents

Système pour contrôler la qualité d'une machine à imprimer Download PDF

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Publication number
EP1752292A2
EP1752292A2 EP06015124A EP06015124A EP1752292A2 EP 1752292 A2 EP1752292 A2 EP 1752292A2 EP 06015124 A EP06015124 A EP 06015124A EP 06015124 A EP06015124 A EP 06015124A EP 1752292 A2 EP1752292 A2 EP 1752292A2
Authority
EP
European Patent Office
Prior art keywords
laser
quality control
control system
printing
laser beam
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Withdrawn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
EP06015124A
Other languages
German (de)
English (en)
Other versions
EP1752292A3 (fr
Inventor
Thomas Walther
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1752292A2 publication Critical patent/EP1752292A2/fr
Publication of EP1752292A3 publication Critical patent/EP1752292A3/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Withdrawn legal-status Critical Current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
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control

Definitions

  • the invention relates to a quality control device for a printing press according to the preamble of claim 1.
  • Permanent quality monitoring is possible with printing machines if, in particular after the last printing unit, an image recording device in the form of a camera together with image processing is arranged.
  • image inspection system and, for example, from EP 1 190 855 A1 and the EP 0 884 182 B1 30 known.
  • the image data obtained by the image recording device are compared pixel by pixel with predetermined setpoint values, whereupon, in the event of deviations from setpoint values, either warnings are issued or the printing process is intervened in a corrective manner.
  • a scanning station in a printing machine which generates data describing the printed images and analyzes these data based on given criteria.
  • a marking station is coupled with the analysis station, which affixes a nullification notice to those documents or benefits in which the data analysis has determined that they do not meet the specified criteria.
  • the individual documents are marked by a print head, eg an inkjet or impact printer.
  • Embodiments for a color control within a printing press are in the EP 0749 8833 A2 and the EP 0 798 117 A2 described.
  • the DE 43 21 177 A describes a co-planar solution of fog detection and color measurement within a printing machine.
  • solutions based on densitometric or spectrophotometric probes are also known.
  • An assignment of colorimetric and / or densitometric tolerance ranges for individual picture elements is inter alia from EP 0 527 285 A2 known.
  • the EP 1 454 746 A1 describes an image processing system for a printing press, in which the image processing device is arranged downstream of a printing device by which markings are generated at recognized as defective image locations.
  • printing units for marking erroneous image locations or benefits are inkjet printers; Laser printers, numbering devices that produce either a visible or invisible mark on the substrate. It can be arranged according to the image division along a traverse multiple printing units.
  • the object of the present invention is therefore to expand a printing quality device for a printing press in such a way that the information obtained by the printing quality device can be utilized in a simple manner even after printing.
  • a quality control system for a printing machine in particular sheet-fed offset printing press, in which the printing material is recorded inline by an image recording device and / or measured by a color measuring device spectrophotometrically or densitometrically during the sheet pass through the printing press.
  • the detected signals are processed in a downstream image processing, in the case of the inline density or spectrophotometric measurement, the measurement data are fed to a processing computer, which contains software for evaluating the measurement data.
  • the quality control device it is possible for the quality control device to arrange one or more controllable laser devices in accordance with the quality data determined from the print image or a print control strip which in the event of a fault or deviation outside a predetermined tolerance field of a mark or part of the print image printed in advance during the print run Change by a color removal in such a way that the error can be seen in an orderly step visually or under with the help of a corresponding sensor as such.
  • the image recording device is followed by a laser device, which makes it possible to change a pre-printed mark and / or a part of the printed image such that the marked area later with a sensor as faulty is to be detected.
  • this is done by removing parts or the entire color layer at the irradiated areas by the laser. The removal can be done by ablation and / or evaporation of the dye layer.
  • a heat-sensitive or in another way sensitive to the laser light ink can be pre-printed, wherein the laser beam is a contrast envelope of the color.
  • the laser device arranged downstream of the image recording device can be a CO2 laser, a diode laser, an excimer laser or a solid-state laser.
  • the use of the invention in printing designed for multiple uses In label printing, a large number of labels are placed on a sheet, resulting in the largest possible number. If errors are detected by the image recording device and / or color measuring device and the associated evaluation unit on one or more labels, then these or several defective labels can be identified by the downstream laser device or laser devices by ablating components of the printing ink in the preprinted printing units by the laser light or evaporated. In the second embodiment, the faulty locations are identified by a color change of a preprinted heat-sensitive or laser-sensitive printing ink which is irradiated by the laser light.
  • the removed or partially removed by the laser color layer may be any components of the image, which are then easily detected with a suitable sensor or visually.
  • Advantageous for the identification of a package is the destruction or disturbance of the so-called adhesive flap code, as it is located within the adhesive flap of a package. This is usually evaluated in Faltschachtelklebemaschinen and ejected in case of error.
  • FIG. 1 shows an adhesive flap code of a folding box in which the printing ink has been partially removed by a laser beam which has been widened with an optic.
  • the distance problem in the display area for marking devices as described in the EP 1454 746 A1 can be mentioned, one can work around by the marking device would be mounted in the departure of a printing unit to the printing nip.
  • the quality control devices are integrated after the last printing unit of a sheet-fed press, since the finished printed sheet should be controlled.
  • the analysis of the recorded image data or other measurement data requires a certain amount of time that an immediate marking of a defective pixel or benefit is usually excluded. Therefore, separate printing modules or sheet guiding modules with cylinders between last printing unit and delivery must are inserted, which serve to Aufanhme the marking device. This approach is associated with additional costs.
  • the main advantage of marking a faulty image area or usefulness by ablation or evaporation of a color layer or by the color change of a special color is that laser light act largely independent of distance and can also be deflected by suitable optics. This allows the integration of such a laser device in the delivery of a sheet-fed press. Due to the position in the delivery and the associated longer distance from Jardinuaf broth or other measurement after the last printing unit of a sheetfed press to the site of action of the laser device in the delivery of a sheetfed press sufficient computing time for error analysis available.
  • Another significant advantage of the laser solution is the high maintenance of such systems. No consuming medium is needed and there is no risk of drying in "non-write mode", as in the case of the inkjet systems.
  • the laser device can be placed above the delivery of a sheet-fed printing machine. This position has the advantage that the laser device is located outside the installation space of the printing press and thus can be easily maintained.
  • the laser beam can act directly on the substrate or be directed by a scanner or mirror on the substrate.
  • the laser (s) can be permanently mounted, mechanically or motor-adjustably mounted. The motorized adjustment would offer the possibility that the laser moves at a fixed marking location when setting up a job to the appropriate position, or in the case of a variable marking location even during the job change its position.
  • the position according to FIG. 3 has the further advantage that laser and optics are located outside the installation space of the printing press.
  • For the laser beam are only small openings or narrow slots necessary through which the laser beam can radiate. Due to the position outside the machine, the risk of contamination of the optics by powder or paper dust compared to an installation space within the boom of the sheet-fed press is significantly reduced. In addition, the effects of heat or radiation, as they can deliver dryer systems in the boom, outside are not given.
  • Another installation option is to let the or the laser beams enter laterally through an opening in the side wall of the boom of a sheet-fed printing press in the interior of the boom.
  • a mirror or other optical device which is located between forward and backward boom gripper chains, the laser or the laser beams could be deflected onto the substrate.
  • the deflection optics or mirrors can be permanently installed or mechanically or motor-driven or adjustable. This solution has the advantage that almost any installation position in the boom area is conceivable, since no consideration has to be taken of the returning system.
  • a disadvantage of the solution that in the space of the printing machine is a sensitive optical system that could be contaminated by paper dust or powder. This optics would have to be cleaned regularly, for example, or protected from contamination by an air curtain.
  • a broad stroke can only be generated by a laser with its fine laser point by a multiple back and forth movement of the laser beam. This movement is at the expense of time and usually requires a reduction of the printing capacity of the printing press ( Figure 5).
  • a read-only reader is recommended because only a portion of the area pre-printed with the special color is to be changed.
  • This area can be marked in the event of a fault and, for example, provided with an individual coding in Gutfall, as is desired, for example, for the gray market marking.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Electronic Switches (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
EP06015124A 2005-08-09 2006-07-20 Système pour contrôler la qualité d'une machine à imprimer Withdrawn EP1752292A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510037498 DE102005037498A1 (de) 2005-08-09 2005-08-09 Qualitätskontrollsystem für eine Druckmaschine

Publications (2)

Publication Number Publication Date
EP1752292A2 true EP1752292A2 (fr) 2007-02-14
EP1752292A3 EP1752292A3 (fr) 2010-06-09

Family

ID=37188867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06015124A Withdrawn EP1752292A3 (fr) 2005-08-09 2006-07-20 Système pour contrôler la qualité d'une machine à imprimer

Country Status (3)

Country Link
EP (1) EP1752292A3 (fr)
JP (1) JP2007045152A (fr)
DE (1) DE102005037498A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1918099A1 (fr) 2006-10-31 2008-05-07 MAN Roland Druckmaschinen AG Dispositif de marquage pour une presse
WO2010084144A1 (fr) * 2009-01-26 2010-07-29 Manroland Ag Procédé de contrôle de la puissance des émetteurs d'ultraviolets dans une presse d'impression, à l'aide de supports réagissant aux ultraviolets

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102189744B (zh) 2010-03-05 2016-03-02 海德堡印刷机械股份公司 用于在页张印刷机中标记页张的方法
DE102016226171A1 (de) 2016-12-23 2018-06-28 Koenig & Bauer Ag Auslage und Verfahren zur Kennzeichnung von Bogen in der Auslage einer bogenverarbeitenden Maschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1167034A2 (fr) * 2000-06-23 2002-01-02 Komori Corporation Procédé et dispositif d'identification d'objets sous forme de feuilles
WO2005025872A1 (fr) * 2003-09-12 2005-03-24 Eyec Gmbh Procede et dispositif pour controler des resultats d'impression

Family Cites Families (22)

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DE3425086C2 (de) * 1984-07-07 1986-12-11 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Verfahren und Vorrichtung zum Erstellen von einzigen Ausfertigungen eines Druckes
AT386159B (de) * 1985-10-11 1988-07-11 Oesterr Nationalbank Verfahren und vorrichtung zur herstellung von echtheits-(codierungs)-merkmalen auf wertpapieren
JPS62112002A (ja) * 1985-11-11 1987-05-23 Toppan Printing Co Ltd 打抜き見当検査装置
DE3938138C2 (de) * 1989-11-16 1993-12-23 Roland Man Druckmasch Vorrichtung zur Qualitätssicherung des Auflagendrucks an einer Bogendruckmaschine
JPH03240580A (ja) * 1990-02-20 1991-10-25 Seiko Epson Corp 印刷機
DE4142481A1 (de) * 1991-08-12 1993-02-18 Koenig & Bauer Ag Qualitaetskontrolle einer bildvorlage z. b. eines gedruckten musters
JP2751089B2 (ja) * 1992-11-30 1998-05-18 大日本インキ化学工業株式会社 レーザーマーキング方法及び印刷インキ
ATE167583T1 (de) * 1993-02-17 1998-07-15 De La Rue Giori Sa Vorrichtung und verfahren zum prüfen von drucksachen
DE4321177A1 (de) * 1993-06-25 1995-01-05 Heidelberger Druckmasch Ag Vorrichtung zur parallelen Bildinspektion und Farbregelung an einem Druckprodukt
DE4321179A1 (de) * 1993-06-25 1995-01-05 Heidelberger Druckmasch Ag Verfahren und Einrichtung zur Steuerung oder Regelung von Betriebsvorgängen einer drucktechnischen Maschine
US5767980A (en) * 1995-06-20 1998-06-16 Goss Graphic Systems, Inc. Video based color sensing device for a printing press control system
JPH09123606A (ja) * 1995-11-02 1997-05-13 Dainippon Printing Co Ltd レーザー印字用積層体およびその印字体
US5774225A (en) * 1996-03-27 1998-06-30 Advanced Vision Technology, Ltd. System and method for color measurement and control on-press during printing
JP3913844B2 (ja) * 1996-07-25 2007-05-09 株式会社小森コーポレーション 枚葉輪転印刷機の枚葉紙検査装置
JP2001194802A (ja) * 1999-11-02 2001-07-19 Toray Ind Inc イメージング媒体及びその製造方法、イメージング方法、イメージング媒体加工装置、イメージング装置、印刷装置、印刷システム及び印刷方法
EP2008819B1 (fr) * 2000-05-08 2010-08-25 Kba-Giori S.A. Installation de traitement de feuilles de papier imprimé
DE20010920U1 (de) * 2000-06-20 2000-09-14 Roland Man Druckmasch Druckmaschine, insbesondere Bogenoffsetdruckmaschine
JP4616451B2 (ja) * 2000-09-22 2011-01-19 株式会社小森コーポレーション 印刷品質検査装置
JP3876137B2 (ja) * 2001-09-17 2007-01-31 ミナミ株式会社 フレキシブルプリント基板の印刷状態等の検査装置
DE20303574U1 (de) * 2003-03-06 2003-04-30 Roland Man Druckmasch Bildinspektionssystem für eine Druckmaschine
DE10316472A1 (de) * 2003-04-09 2004-10-28 Heidelberger Druckmaschinen Ag Verfahren zum Trocknen einer Druckfarbe auf einem Bedruckstoff in einer Druckmaschine und Druckmaschine
JP4134327B2 (ja) * 2003-11-19 2008-08-20 株式会社プロセス・ラボ・ミクロン メタルマスク及びその製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1167034A2 (fr) * 2000-06-23 2002-01-02 Komori Corporation Procédé et dispositif d'identification d'objets sous forme de feuilles
WO2005025872A1 (fr) * 2003-09-12 2005-03-24 Eyec Gmbh Procede et dispositif pour controler des resultats d'impression

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1918099A1 (fr) 2006-10-31 2008-05-07 MAN Roland Druckmaschinen AG Dispositif de marquage pour une presse
WO2010084144A1 (fr) * 2009-01-26 2010-07-29 Manroland Ag Procédé de contrôle de la puissance des émetteurs d'ultraviolets dans une presse d'impression, à l'aide de supports réagissant aux ultraviolets

Also Published As

Publication number Publication date
EP1752292A3 (fr) 2010-06-09
JP2007045152A (ja) 2007-02-22
DE102005037498A1 (de) 2007-02-15

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