EP2055478A2 - Système de production de structures tactiles sur des produits d'impression - Google Patents

Système de production de structures tactiles sur des produits d'impression Download PDF

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Publication number
EP2055478A2
EP2055478A2 EP08166556A EP08166556A EP2055478A2 EP 2055478 A2 EP2055478 A2 EP 2055478A2 EP 08166556 A EP08166556 A EP 08166556A EP 08166556 A EP08166556 A EP 08166556A EP 2055478 A2 EP2055478 A2 EP 2055478A2
Authority
EP
European Patent Office
Prior art keywords
sheet
laser
printing
machine according
printing machine
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Withdrawn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
EP08166556A
Other languages
German (de)
English (en)
Inventor
Gunnar Held
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
Manroland 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
Priority claimed from DE102008001712A external-priority patent/DE102008001712A1/de
Application filed by Manroland AG filed Critical Manroland AG
Publication of EP2055478A2 publication Critical patent/EP2055478A2/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Withdrawn legal-status Critical Current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
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/007—Apparatus or machines for carrying out printing operations combined with other operations with selective printing mechanisms, e.g. ink-jet or thermal printers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/002—Apparatus or machines for carrying out printing operations combined with other operations with means for applying specific material other than ink

Definitions

  • the invention relates to a marking device for a printing machine, in particular a laser marking device, for the individual marking of printed sheets or individual uses on the signatures according to the preamble of claim 1.
  • the object of the invention is a fast and cost-optimal laser marking device to create for printed sheets, which requires no additional setup effort for the laser unit or the laser units.
  • one or more laser devices in the area of sheet conveying or above the installation space of a sheet delivery of a sheet-fed printing press.
  • a sheet-fed offset printing machine is used as the carrier for the application.
  • the task setting is fulfilled by a coordinate-controlled, programmable system, in particular a scanner system in conjunction with a laser beam source.
  • a pulsed behavior of the beam source it is preferably possible to generate individual points or lines in any desired arrangement on the sheet.
  • the palpable structures are in this case achieved by an applied to the substrate flatulent paint or paint or other material that has been applied to the substrate before the printing process. This material expands at points exactly where it comes into contact with the beam emitted by the system according to the invention, in particular laser radiation.
  • FIG. 1 a sheet delivery 1 is shown, which adjoins a sheet-fed printing machine for forming a sheet stack of printed sheet 33 in a display 4.
  • a laser marking device 14 not shown here is provided in the working space of the sheet delivery 1 (space limitation 3). This is located inside a funnel-shaped foreclosure 2, which ensures that the laser beam can not endanger the health of the staff.
  • a working distance for the deflection of the laser marking device 14 is created, whereby the laser beam and the laser beams can be deflected over the entire sheet width to require as few individual laser units.
  • FIG. 2 is a sheetfed offset printing machine with a feeder 5 for sheet feeding, printing units 6 and 7 for printing inks on the sheet 33 and a coating unit 8 between the printing units 6, 7 for coating the sheet 33 and the boom 1 for stacking the sheet 33 shown.
  • the printed sheets 33 are guided in the sheet-fed offset printing press on counter-pressure cylinder 20, sheet transport drums 21 and a chain conveyor system 22 to grippers through all stations of the processing and finally stored on the delivery pile.
  • This illustration shows a minimal configuration of a sheet-fed press. This can contain more than two printing units and more than one coating unit, which can also be arranged in different order.
  • laser devices 9 to 13 can now also be assigned in different alternative arrangements directly leading cylinders (impression cylinder 20) or drums (sheet transport drum 21) or gripper carriage systems (chain conveyor 22) ,
  • the laser marking devices 9 to 13 for labeling can be directed in a well-focused manner to the previously printed in printing units 6, 7 and / or coating units 8 printed sheet 33, since the cylinders and drums usually solid surfaces or the bow guide serving mating surfaces, which allow a good positioning of the sheets 33.
  • the assignment can be done by means of suction for the free-flying there held on the chain conveyor 22 sheet 33.
  • the arrangement of the laser marking devices 9 to 13 can be selected such that a plurality of laser units are arranged across the width of the cylinders or drums. Then, the distance to the respective required for the marking support surface of the sheet 33 can be selected low, so that a small size can be achieved. However, the arrangement of the laser marking devices 9 to 13 can also be selected such that only one or two laser units are arranged across the width of the cylinders or drums. Then, the distance to the respective required for the marking support surface of the sheet 33 can be chosen so large that a safe sweeping the entire sheet width in the marking can be achieved.
  • the laser marking device consists of a laser unit 30, which is optically connected to a scanner 31.
  • the scanner 31 is an optical device for arbitrarily controllable, possibly periodic deflection of a laser beam 32 acts on an imaging area of a printing sheet 33. In this case, the focusing of the laser beam 32 to the respective substrate (sheet 33) is constantly adjusted depending on the distance. From the laser unit 30 laser light is transmitted to the scanner 31 and radiated from there as a controlled and optionally on the signature 33 oscillating laser beam 32.
  • the scanner 31 is arranged for this purpose in a sufficiently large possibly adjustable distance above the counter-pressure cylinder 33 carrying the printing sheet 20.
  • the maximum necessary pendulum angle of the laser beam 32 with respect to the maximum possible width of the sheet 33 is not too large, so that the control is limited to the movement to acceptable speeds and the adjustment control can run optimally for focusing.
  • the latter can cover the full width of the printed sheet 33 as required and writes or processes the desired pattern in the corresponding surface areas on the surface as a result of its pulsed irradiation. If a plurality of laser marking units are arranged next to one another at a station for marking or processing the surface of the printed sheet 33, corresponding relationships result, wherein the distance of the scanner 31 from the printed sheet 33 can then be selected correspondingly smaller.
  • the printed sheets 33 are thereby exposed to one or more laser marking devices 9 to 13 for processing.
  • the laser marking devices 9, 11 and 12 are associated with counter-pressure cylinders 20 on which the printed sheets 33 are securely guided.
  • the laser marking device 10 is associated with a sheet transport drum 21 and irradiates the printing sheet 33 from the inside thereof, wherein the sheet 33 is optionally pneumatically guided on a sheet guiding surface (sheet guide path) opposite the sheet transport drum 21.
  • the laser marking device 13 is still associated with a chain conveyor 22 to the sheet delivery 1 out.
  • Each of the mentioned laser marking devices 9 to 13 can consist of one or more laser units 31 and can be arranged variably and adjustably on the respective element guiding a sheet.
  • each point of the printing sheet 33 can be irradiated during its transport through the printing press by means of a laser beam 32.
  • the sheet movement and speed in the movement of the laser beam 32 is included for the processing.
  • one or more inlet openings may be provided on the sheet delivery 1 in the upper Verschutzung through which the laser beam or the laser beams enter the space of the sheet delivery 1 and guided there by the display gripper systems sheet 33 for the purpose of labeling or marking Sheet 33 can hit or can.
  • the surface of the printing sheet 33 is scanned for the purpose of labeling or marking only by one or two laser beams.
  • FIG. 1 allows a deflection of the laser beam over the entire width or portions of the sheet 33 with only small adjustment movements of the deflection optics or deflection optics (scanner) of the laser. These small paths can be done much faster than the relatively large adjustment paths that would be required if the laser were placed within the space of the cantilever. Due to the fast, small movements of the deflection optics writing and marking work on the entire sheet 33 with one or only a few laser units in the laser marking device 14 can be performed.
  • the assignment of a laser marking arrangement 13, 14 to the sheet delivery 1 of a sheet-fed printing press further has the advantage that the printing sheet 33 in the straight part of the sheet guide tracks is guided flat and can be fixed by the pneumatic working sheet guiding devices on this by negative pressure. Elaborate setup work and additional sheet guiding elements are not required in the inventive solution.
  • the laser marking devices 9 to 14 are mounted in a fixed position and the desired marking location is controlled by the movement of the laser optics for deflecting the laser beams. In the event that should not be marked, the laser beam (s) are switched off and turned on for marking or the laser beam is deflected so that it does not hit the printing sheet 33 and is directed onto the printing sheet 33 when a marking is to be made.
  • the laser (s) could theoretically also be mounted on a carriage or a linear drive or a plurality of linear drives which move the laser (s) over the machine width or, if appropriate, also in the X, Y direction over the printed sheet 33.
  • these drives require special protection against dust and powder, as it often occurs in the area of the sheet delivery 1. In the FIG. 1 shown fixed position high above the space of the sheet delivery 1 but ensures a low tendency to fouling. The lack of moving parts that are exposed also increases the robustness of the overall system.
  • a further advantage of a position of the laser marking device 14 far above the installation space 3 of the sheet delivery device 1 is that contamination of the laser optics by dust and powder, which inevitably occurs in the sheet delivery device 1 of a sheet-fed machine, can be further reduced in which in the hopper, A small overpressure prevails, which closes off the beam area of the laser and directs the air out of the funnel towards the interior of the laser Cantilever stream. This largely avoids the penetration of dust and powder.
  • the overpressure can be generated in a known manner by fans or fans, which blows air into the hopper building space. This advantage also applies to the corresponding arrangement of the laser marking devices 9 to 13 on the printing or coating units 8.
  • Such shielding may be accomplished by shielding the beam region of the laser by a metallic or polycarbonate cladding or other type of protective device suitable for laser absorption.
  • the type of shielding on the type of laser and the radiated wavelength from him suitably match.
  • the Ummantelung of the beam area must be designed so safety that a disassembly or opening leads to the immediate shutdown of the laser or the laser.
  • An access or access or opening a protection of the boom installation space (as well as the installation space on a printing or coating unit 8 8 as in FIG. 2 ) must also lead to a shutdown of the laser.
  • the protective devices must be protected against opening, which were previously secured only by screws. This can be done by special screws or electrical contacts that interrogate the presence of the protection.
  • the laser beam (s) may interact with an IR-reactive or a UV-reactive material previously applied to the substrate (print sheet 33).
  • a material may be an IR-reactive or a UV-reactive printing ink or a varnish in which a volume change by the laser beam is brought about.
  • the material may also be a printing ink or a varnish which has elements which are swellable under the action of heat and which leads to haptically sensible structures and / or color changes in the region which is swept by the laser beam.
  • a Braille font embossment are generated.
  • the laser beam is capable of writing any desired patterns on the printed sheets 33 to be processed.
  • a kind of scanner system is provided. By pulsing the laser beam, a dotted pattern can be generated. The puncture may then be applied to a signature 33 in any manner, as well as a line pattern.
  • Such a structure may be provided with a protective layer, such as a lacquer layer, prior to formation in further leading printing units or coats 8, so that it is protected beneath this layer and thus becomes more resistant.
  • a protective layer such as a lacquer layer
  • Such a structure produced by means of the laser beams on the printed sheet 33 can also, after being produced in further downstream printing or coating units 8, be provided with a protective layer, e.g. a lacquer layer are provided, so that the structure is effectively protected.
  • a protective layer e.g. a lacquer layer are provided, so that the structure is effectively protected.
  • the laser itself can be a CO2 laser, a diode laser, an excimer laser or a YAG laser. Also suitable are fiber or disk lasers. In principle, however, any type of laser is suitable, which allows to work with suitable controls an inflatable layer (irradiate) without destroying them.
  • the treatment by irradiation can trigger physical or chemical reactions in the corresponding layer.
  • the processing takes place, for example, in IR-reactive systems by the action of heat, which leads to the swelling of the irradiated layer elements.
  • the processing takes place in UV-reactive systems by triggering a chemical reaction, which leads to selective polymerization and thus to the puffing of the irradiated layer elements.
  • the proposed solution is suitable for creating tactile structures in the production of printed products for the graphic arts industry. Braille in particular (braille on pharmaceutical packaging). By integration into the printing process, the creation of the structures that can be sensed can take place during the printing process.
  • embossing methods with die and male are known, but they must be regarded as inflexible and profitable only after a high circulation of printed products. Furthermore, the embossing is produced in a work step downstream of the actual printing process.
  • the great advantage of the system is its high flexibility, since the structures are generated by a coordinate-controlled, programmable system.
  • it is an inline method, which eliminates the downstream step of embossing and the necessary embossing plant.
  • a coordinate-controlled, programmable system in particular a scanner system in conjunction with a laser beam source, provided.
  • a laser beam source By pulsed driving the radiation source individual points or lines can be easily generated in any order on the sheet 33.
  • the desired tactile structures are produced by means of the inflatable paint applied to the substrate or a corresponding lacquer or other suitable material which may have been applied to the printing sheet 33 before the printing process.
  • the respective coating expands at points exactly where it is contacted by a laser marking device 9 to 14 emitted laser radiation.
  • the system according to the invention of the laser marking devices 9 to 14 can be installed completely flexibly depending on the available space before, in or after a printing or coating unit 8 of a printing press or in conjunction with a delivery 1 of the printing machine, in particular a sheet-fed offset printing press.
  • a protective film to the structure produced by the system by means of a subsequently applied paint or lacquer layer or to produce the structure in or below a previously applied coating of paint or lacquer.

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  • Laser Beam Processing (AREA)
EP08166556A 2007-10-30 2008-10-14 Système de production de structures tactiles sur des produits d'impression Withdrawn EP2055478A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007051791 2007-10-30
DE102008001712A DE102008001712A1 (de) 2007-10-30 2008-05-13 System zum Erzeugen fühlbarer Strukturen auf Druckprodukten

Publications (1)

Publication Number Publication Date
EP2055478A2 true EP2055478A2 (fr) 2009-05-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08166556A Withdrawn EP2055478A2 (fr) 2007-10-30 2008-10-14 Système de production de structures tactiles sur des produits d'impression

Country Status (1)

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EP (1) EP2055478A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013037473A1 (fr) * 2011-09-15 2013-03-21 Giesecke & Devrient Gmbh Dispositif permettant d'appliquer un marquage sur un substrat au moyen d'un faisceau laser
EP3090875A1 (fr) * 2015-05-07 2016-11-09 manroland web systems GmbH Unité d'impression avec forme d'impression variable comme aide au pliage
WO2016174225A3 (fr) * 2015-04-30 2016-12-15 Koenig & Bauer Ag Procédé et ensembles de machines pour traiter séquentiellement des substrats cintrés

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0737572B1 (fr) 1995-04-15 1998-02-18 MAN Roland Druckmaschinen AG Procédé pour repiquer des codes de barres sur des feuilles imprimées et appareil pour la réalisation du procédé
DE19704003A1 (de) 1997-02-04 1998-08-06 Kba Planeta Ag Verfahren und Vorrichtung zum Eindrucken von individualisierenden Kennzeichnungen
DE20303574U1 (de) 2003-03-06 2003-04-30 Roland Man Druckmasch Bildinspektionssystem für eine Druckmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0737572B1 (fr) 1995-04-15 1998-02-18 MAN Roland Druckmaschinen AG Procédé pour repiquer des codes de barres sur des feuilles imprimées et appareil pour la réalisation du procédé
DE19704003A1 (de) 1997-02-04 1998-08-06 Kba Planeta Ag Verfahren und Vorrichtung zum Eindrucken von individualisierenden Kennzeichnungen
DE20303574U1 (de) 2003-03-06 2003-04-30 Roland Man Druckmasch Bildinspektionssystem für eine Druckmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013037473A1 (fr) * 2011-09-15 2013-03-21 Giesecke & Devrient Gmbh Dispositif permettant d'appliquer un marquage sur un substrat au moyen d'un faisceau laser
WO2016174225A3 (fr) * 2015-04-30 2016-12-15 Koenig & Bauer Ag Procédé et ensembles de machines pour traiter séquentiellement des substrats cintrés
US10052885B2 (en) 2015-04-30 2018-08-21 Koenig & Bauer Ag Method and printing press arrangements for sequential processing of sheet-like substrates
US10293623B2 (en) 2015-04-30 2019-05-21 Koenig & Bauer Ag Modular machine arrangement for sequential processing of sheets
US10940699B2 (en) 2015-04-30 2021-03-09 Koenig & Bauer Ag Modular machine arrangement for sequential processing of sheets
EP3090875A1 (fr) * 2015-05-07 2016-11-09 manroland web systems GmbH Unité d'impression avec forme d'impression variable comme aide au pliage

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