EP2055479A2 - Procédé d'impression par transfert - Google Patents

Procédé d'impression par transfert Download PDF

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Publication number
EP2055479A2
EP2055479A2 EP08167933A EP08167933A EP2055479A2 EP 2055479 A2 EP2055479 A2 EP 2055479A2 EP 08167933 A EP08167933 A EP 08167933A EP 08167933 A EP08167933 A EP 08167933A EP 2055479 A2 EP2055479 A2 EP 2055479A2
Authority
EP
European Patent Office
Prior art keywords
transfer
printed
printing
coating
film
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Withdrawn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
EP08167933A
Other languages
German (de)
English (en)
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
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
Application filed by Manroland AG filed Critical Manroland AG
Publication of EP2055479A2 publication Critical patent/EP2055479A2/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Withdrawn legal-status Critical Current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
    • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
    • B41F19/06—Printing and embossing between a negative and a positive forme after inking and wiping the negative forme; Printing from an ink band treated with colour or "gold"
    • B41F19/062—Presses of the rotary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/006—Patterns of chemical products used for a specific purpose, e.g. pesticides, perfumes, adhesive patterns; use of microencapsulated material; Printing on smoking articles
    • B42D2035/20—

Definitions

  • the invention describes a pictorial transfer printing method for use in sheet-fed rotary printing presses according to the preamble of patent claim 1 and a printed product according to the preamble of claim 14.
  • hot foil stamping As a transfer process in the printing industry, the so-called hot foil stamping has found widespread use.
  • a transfer film is used, which usually has a wax layer as a release layer.
  • the image-providing layers usually metallic layers, are then applied to this release layer.
  • the metallic layers are partially transferred from the carrier material to the printing substrate.
  • a printing material and a printing apparatus using this material are described.
  • a sheet-processing printing machine which has a feeder and a boom, wherein printing units and coating units are arranged between the two units.
  • an adhesive pattern is applied by means of the planographic printing process. This adhesive pattern is applied in a cold printing process and has a specific image-giving subject.
  • a film guide is provided in the printing unit following coating unit with a counter-pressure cylinder and a press roller.
  • the known transferable holograms or hologram-like structures are based on embossed metal layers or layers, which are based on a combination of lacquer and metal layer.
  • the disadvantage is that such layers can not be applied to a printed image because they have no transparency.
  • conventional production methods are based on the fact that a hologram or a diffractive optical structure is produced by embossing.
  • Optical effects include optical gratings, lenses and diffractive structures for the design of optical effects in transparent materials.
  • Optical gratings are also referred to as diffraction gratings and consist for example of a plurality of longitudinal structures at a uniform distance.
  • the light of the single column interferes and forms an interference pattern. This results in a series of diffraction reflections whose arrangement corresponds to that which is found at the double slit with equal intervals. Due to the dependence of the reflections on the wavelength, optical gratings are used to separate different wavelengths.
  • Optical lenses occur in the as collecting lenses or diverging lenses.
  • the diffractive optic exploits the diffraction of the light. Diffraction effects occur on quasi-dimensional forms (for example, a lattice structure) with sufficiently small structures (gap width on the order of the wavelength of the light used).
  • lenticular images are images which have changeable light effects in the viewing angle.
  • a film is applied on a Drucksujet, which is composed of one or more frames.
  • This film has lenticular elevations with convex or cylindrical elevation structures (lenticular elements). Basically, a distinction is made between horizontal and vertical lenses.
  • the US 6,795,250 B2 be used as a generic representative of such a lenticular structure.
  • the patent discloses the development of an elliptically shaped lenticular grid and includes the differences in line screens.
  • the patent publication US 2004/0219302 A1 discloses a method for producing partially arranged lenticular images. First, the printed image is printed. The printed strip images are not distributed over the entire sheet, but only in individual places.
  • the patent publication DE 10 2006 003 798 A1 is concerned with a method and a device for generating viewing angle-dependent changeable image effects on a printing substrate.
  • the optically effective lacquer layer is structured by the use of lacquers of different surface tensions.
  • the patent publication WO 2004/057382 A1 involves the creation of a micro-optical grating on a substrate surface.
  • the grid is introduced by embossing on the substrate surface or in the coating layer located on the substrate. Viewing angle dependent holographic or similar effects are created in the eye of the beholder. Depending on the viewing angle, the intensity and color of the effect change. In this case, an embossed lacquer layer may appear completely transparent even under certain viewing angles.
  • the object of the invention is therefore to further develop the production process known per se for the cold foil transfer so that a transfer of holographic, diffractive or other optically transparent structures as a transparent layer on a printed image is possible.
  • the printed product is provided with viewing angle-dependent optical effect.
  • the connection of the transparent structure with the printed image takes place inline during a printing pass or Offline during a second pass through the press by the press using the cold foil transfer process.
  • a printed image consisting of fonts, logos and / or images is printed in the printing press with printing ink.
  • a highly transparent adhesive with an offset or flexographic printing unit is then applied to the printed image over a plane or partially.
  • the sheet is passed through the coating unit, being brought by means of the press roller on the impression cylinder resting sheet with the film transfer material in combination.
  • the downwardly lying, transparent layer which carries optically active structures, a close connection with the adhesive provided areas.
  • the transferred layer adheres only in the area provided with the adhesive pattern.
  • the carrier film is thus removed only the transfer layer in the region of the adhesive pattern.
  • transfer film is wound up again. It is known to use such coating units, for example in printing units of printing presses. It is also known to use as a press roll, for example, the blanket cylinder or printing cylinder of a printing unit.
  • This produces a printed product which consists of a substrate, a pictorial layer or layers located thereon, consisting of text, logos and / or images, and a transparent optical structure applied thereto.
  • the film material for the cold film transfer consists of a carrier film, a release layer thereon and a transparent transfer layer, which is removed during the transfer process by the adhesive layer on the substrate.
  • the transfer layer has an optically active structure, which is preferably a diffractive structure.
  • the optically active structure can be introduced into the transfer layer by exposure methods.
  • the structure is preferably introduced by a microoptical embossing.
  • the generation of the optical structure can be outside the printing press, for example, during the production of the transfer films, or by a stamping mill, which is integrated in the film feed to the press nip, are generated.
  • a transparent, optically active layer which is applied in the cold-film transfer process is understood as meaning a layer in which the texts located underneath are readable or images can be seen at certain viewing angles.
  • the advantage of the invention is that in the area of packaging and magazine impression, optical effects can be applied to a printed product without limiting the space for text and image.
  • the application of an embossed transfer layer to a printed image also provides excellent protection against product counterfeiting, since such a protected packaging can hardly be reproduced again with the classic precursor processes.
  • such printed products produce a high attention value, so that the advertising effectiveness of the printed product increases significantly.
  • the applicator 1 may be a per se known offset printing unit with an inking unit 11, a plate cylinder 12 and a blanket cylinder 13.
  • the blanket cylinder 13 cooperates with an impression cylinder 4 and transmits a generated by means of the inking unit and the printing plate on the plate cylinder 12 adhesive image on the sheet.
  • the coating unit 2 can also be formed by an offset printing unit.
  • the transfer nip 6 in the coating unit 2 is formed by a press roll 3 and an impression cylinder 4.
  • the press roll 3 may correspond to the blanket or blanket cylinder.
  • the press roll 3 may also correspond to the forme cylinder of a paint module.
  • a web guide 14 for transfer films is shown within the coating unit 2 used for the film transfer.
  • the transfer film 5 is thereby switched on and executed by protective devices 15 of the coating unit 2.
  • the film supply roll 8 is assigned to the coating unit 2 on the sheet feed side.
  • the film supply roll 8 has a rotary drive 7 for the continuous controlled feeding of the transfer film to the coating unit 2.
  • a film feed deflection or tension rollers for guiding the transfer film 5 may be provided in a substantially constant tension against the press roller 3.
  • a film collecting roller 9 is provided for the used sheet material.
  • a rotary drive 7 on the film collecting roller 9 is always advantageous. It can even be provided that the transfer film 5 is conveyed on the outlet side by means of the rotary drive 7 and held taut on the inlet side by means of a brake.
  • the press roll 3 (blanket or form cylinder or separate press roll) carries on its surface a compressible, e.g. also provided with a compressible intermediate layer element.
  • the press roll 3 can be provided with a press fabric 10, for example as a plastic cover, comparable to a blanket or blanket, which is held in a cylinder channel on clamping devices.
  • the film feed of the transfer film 5 from the film supply roll 8 to the transfer nip 6 and the film collection roller 9 is gradually controlled, the transfer film 5 is then stopped, if no transfer of imaging or covering layers should take place.
  • the associated device preferably includes a corresponding feed control for the transfer sheet 5, which ensures that at least the lying in the region of the press roller 3 and the impression cylinder 4 part of the film web is stationary as long as the cylinder channel passes.
  • dryer 16 can be provided in the film application module thus formed from the applicator 1 and the coating unit 2, by means of which the adhesive application or the entire film coating can be dried.
  • an intermediate dryer 16 is provided in a follow-on printing unit 50, which adjoins the coating unit 2.
  • the intermediate dryer 16 may also be arranged in or in connection with sheet guiding elements 19, 20.
  • a sheet guiding element a pneumatically assisted sheet guide path 20 or a sheet guiding drum 19 may be provided, with the aid of which the foil-coated printing sheets B are conveyed from the coating unit 2 to the printing unit 50.
  • the sheet guide path 20 may be below a Bow guide drum - shown here in training as a skeleton drum 19 - be arranged.
  • the follow-on printing unit 50 which is designed as an offset printing unit, form a impression cylinder 40 and a blanket cylinder (blanket cylinder) 41 with a blanket (blanket) 42 a printing nip 60.
  • a Druckbeistell issued 45 is provided on the rubber cylinder 41, which allows adjustment of the pressure of the sheet in the printing gap 60.
  • a pressure supply device 46 for adjusting the pressing pressure in the transfer nip 6 is provided on the press roller 4. This results in indicated by arrows pressing adjustment, which are indicated as Druckbei ein 47 at the printing nip 60 and as Druckbei ein 48 at the transfer nip 6.
  • the film application module may include a monitoring device 17 for scanning the printing surface of the coated printing sheet.
  • the device described above it is possible to coat substrates or partially or completely coated substrates or to laminate or laminate or even to provide a particularly resistant surface layer.
  • the device for the film transfer in a printing units of a sheet-fed printing machine downstream printing or coating plant is arranged. In such an arrangement, the surface of the fresh print is finished or protected by means of the film coating.
  • FIG. 2 is a sheet-fed press with a sheet feeder AN, a plurality of offset printing units 50, a coating unit 51 and a sheet delivery AU shown.
  • the printing process runs in the sheet transport direction from the sheet feeder AN to the sheet delivery AU.
  • All printing units 50 have plate cylinder 43 and a color / dampening 49.
  • the equally available everywhere rubber cylinder 41 and impression cylinder 40 each form a pressure gap 60.
  • two printing units which are configured as a commissioning unit 1 and 2 as a coating unit. For this purpose, an essay with holders for a film supply roll 8 and a film collecting roll 9 is assigned to these two printing units.
  • the printed sheets are guided with a transfer film web 5 through a transfer nip 6 between a press roll 3 (rubber, blanket cylinder) and the impression cylinder 4. Thereafter, in the coating unit 51 by means of the forme cylinder 52, an additional coating on the finished with the transfer sheet signature.
  • This additional coating can be carried out as a full-surface or partial coating.
  • the process according to the invention is in FIG. 3 outlined.
  • a color image printing is performed in the first three printing units 50.
  • two printed images are schematically shown as first pressure D1 and second pressure D2.
  • the print D1 is shown in bold, indicating that this is a normal color print.
  • the pressure D2 is shown grayed out. This means that the print D2 is not visible, imperfectly visible or quasi in the form of a coded image. Therefore, when the first pressure D1 is superposed by the second pressure D2, the first pressure D1 would remain completely visible.
  • the application of a smooth or structured film layer from a transfer film web 5 is provided as printing D3 or film transfer. This is done in the cold foil transfer process as described above.
  • the adhesive in the applicator 1 corresponding to the exact fit to the print image D2 or to the combination of D1 and D2, the transfer film 5 is assigned to the combined print image of pressure D1 and D2 accordingly.
  • the application of a structured film or a film with an optically active pattern is desired, this can be done by two methods.
  • the patterning or the pattern can be in the film web 5 in its supply to the transfer nip 6 by means of a stamping unit 53 (see Fig. 1 and 2 ) are introduced as microembossing.
  • embossing on the finished product can take place in a coating module 51 downstream of the coating unit 2, in which case the forme cylinder 52 can then be converted in a manner known per se for embossing.
  • An approach in this way can also be done in a follow-up printing unit 50 by means of appropriate equipment of the blanket cylinder 41.
  • This special function for visualizing latently present information can be used for security features, optical additional effects for advertising media, playful effects on packaging or printing or content elements that can be differently used and evaluated.
  • the orientation of the underlying printed images to the overlying optically effective embossed or structured foil layers can be influenced by a register device. Thus, even fine structures can be generated and applied to one another on the substrate.
  • the resulting printed product can be well protected against counterfeiting, since the optically active layer is firmly connected to the substrate. It protects the printed samples optically and mechanically against scanning. Upon detachment of the optical layer, the image layer would be destroyed and the printed security pattern in turn can not be copied.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
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  • Business, Economics & Management (AREA)
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EP08167933A 2007-10-30 2008-10-30 Procédé d'impression par transfert Withdrawn EP2055479A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007051789 2007-10-30
DE102008043312A DE102008043312A1 (de) 2007-10-30 2008-10-30 Transferdruckverfahren

Publications (1)

Publication Number Publication Date
EP2055479A2 true EP2055479A2 (fr) 2009-05-06

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Family Applications (1)

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EP08167933A Withdrawn EP2055479A2 (fr) 2007-10-30 2008-10-30 Procédé d'impression par transfert

Country Status (2)

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EP (1) EP2055479A2 (fr)
DE (1) DE102008043312A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2724864A3 (fr) * 2012-10-24 2016-09-14 Heidelberger Druckmaschinen AG Procédé et dispositif de génération et de transmission de microstructures diffractives sur une matière d'impression
CN106274048A (zh) * 2016-08-08 2017-01-04 昆明伟建科创印务有限公司 烫金版、烫金机及烫金方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569520B1 (fr) 1991-01-29 1996-01-17 CROS, Jean-Pierre Materiau pour impression et installation d'impression au moyen de ce materiau
US5585144A (en) 1994-02-22 1996-12-17 Crown Roll Leaf, Inc. Hologram with integral printed indicia
WO2004057382A1 (fr) 2002-12-23 2004-07-08 Avantone Oy Effet visuel fonde sur une structure de grille micro-optique
US6795250B2 (en) 2000-12-29 2004-09-21 Lenticlear Lenticular Lens, Inc. Lenticular lens array
US20040219302A1 (en) 2003-04-14 2004-11-04 Krause Donald R. Selectively formed lenticular images
WO2005100028A1 (fr) 2004-04-13 2005-10-27 Man Roland Druckmaschinen Ag Dispositif de matriçage
DE102006003798A1 (de) 2006-01-25 2007-07-26 Man Roland Druckmaschinen Ag Verfahren und Einrichtung zum Erzeugen von betrachtungswinkelabhängig veränderbaren Bildeffekten auf einen Bedruckstoff

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569520B1 (fr) 1991-01-29 1996-01-17 CROS, Jean-Pierre Materiau pour impression et installation d'impression au moyen de ce materiau
US5585144A (en) 1994-02-22 1996-12-17 Crown Roll Leaf, Inc. Hologram with integral printed indicia
US6795250B2 (en) 2000-12-29 2004-09-21 Lenticlear Lenticular Lens, Inc. Lenticular lens array
WO2004057382A1 (fr) 2002-12-23 2004-07-08 Avantone Oy Effet visuel fonde sur une structure de grille micro-optique
US20040219302A1 (en) 2003-04-14 2004-11-04 Krause Donald R. Selectively formed lenticular images
WO2005100028A1 (fr) 2004-04-13 2005-10-27 Man Roland Druckmaschinen Ag Dispositif de matriçage
DE102006003798A1 (de) 2006-01-25 2007-07-26 Man Roland Druckmaschinen Ag Verfahren und Einrichtung zum Erzeugen von betrachtungswinkelabhängig veränderbaren Bildeffekten auf einen Bedruckstoff

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2724864A3 (fr) * 2012-10-24 2016-09-14 Heidelberger Druckmaschinen AG Procédé et dispositif de génération et de transmission de microstructures diffractives sur une matière d'impression
US9573359B2 (en) 2012-10-24 2017-02-21 Heidelberger Druckmaschinen Ag Method and device for producing and transferring diffractive microstructures to a printing material and printing press having the device
CN106274048A (zh) * 2016-08-08 2017-01-04 昆明伟建科创印务有限公司 烫金版、烫金机及烫金方法

Also Published As

Publication number Publication date
DE102008043312A1 (de) 2009-05-20

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