EP0749829B1 - Procédé pour aligner exactement une image à imprimer dans une position géométriquement correcte d'une machine d'impression - Google Patents

Procédé pour aligner exactement une image à imprimer dans une position géométriquement correcte d'une machine d'impression Download PDF

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Publication number
EP0749829B1
EP0749829B1 EP96201641A EP96201641A EP0749829B1 EP 0749829 B1 EP0749829 B1 EP 0749829B1 EP 96201641 A EP96201641 A EP 96201641A EP 96201641 A EP96201641 A EP 96201641A EP 0749829 B1 EP0749829 B1 EP 0749829B1
Authority
EP
European Patent Office
Prior art keywords
printing
pins
centering device
registration marks
master
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.)
Expired - Lifetime
Application number
EP96201641A
Other languages
German (de)
English (en)
Other versions
EP0749829A1 (fr
Inventor
Harald Dr. Rer. Nat. Ahrens
Rainer Ziefle
Rainer Tiebel
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Polygram Manufacturing & Distribution Centres GmbH
Polygram Manufacturing & Distr
Polygram Manufacturing & Distribution Centres GmbH
Philips Patentverwaltung GmbH
Polygram International Holding BV
Koninklijke Philips Electronics NV
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 Polygram Manufacturing & Distribution Centres GmbH, Polygram Manufacturing & Distr, Polygram Manufacturing & Distribution Centres GmbH, Philips Patentverwaltung GmbH, Polygram International Holding BV, Koninklijke Philips Electronics NV filed Critical Polygram Manufacturing & Distribution Centres GmbH
Publication of EP0749829A1 publication Critical patent/EP0749829A1/fr
Application granted granted Critical
Publication of EP0749829B1 publication Critical patent/EP0749829B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/005—Attaching and registering printing formes to supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/36—Screens, Frames; Holders therefor flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/50—Screen printing machines for particular purposes
    • B41P2215/55—Screen printing machines for particular purposes for printing compact discs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/36—Means for registering or alignment of print plates on print press structure

Definitions

  • the invention relates to a method for the exact alignment of a a printed film arranged on a geometrically correct Printing position of a printing machine for printing on substrates, e.g. from CD's, the printing film having a perforation system aligned with the center of the image is provided and is attached to a printing screen, which on the center of the picture has aligned fitting bores, which are aligned with the center of the carrier Dowel pins of the printing press correspond.
  • a method mentioned at the outset is e.g. when printing CDs with the help a screen printing machine used.
  • the printed image to be printed on the CD's is delivered in the form of a printing film.
  • This printing film must be used for Imaging on the printing screen so that the printing process print image to be printed lies exactly over the CD to be printed.
  • This is the Provide the frame of the pressure screen with so-called fitting holes, which with fixed Dowel pins of the printing press correspond.
  • the fitting holes are Printing screen on the one hand and the dowel pins of the printing press on the other hand arranged and designed that after placing the pressure screen on his Bores on the dowel pins located on the center of the pressure screen Print image exactly over the center of the printing press CD lies.
  • JP 3-268115 A printing device has become known in which With the help of a camera arranged above the printing surface, an adjustment of the printing parts can be made.
  • the invention has for its object the alignment of the printed image on a to simplify the geometrically correct printing position of the printing press and the Increase accuracy of alignment.
  • This Centering device also contains so-called master pins that match the dowel pins Printing press are configured identically.
  • the centering elements provided with precisely fitting holes, e.g. Centering bushes, pushed on, which then with play in the expanded Fit holes of the pressure screen are introduced.
  • the insertion happens in that the centering device with the master pins arranged on it and the slipped centering bushings is lowered in the direction of the pressure screen.
  • the print image arranged on the printing screen is exactly in the exactly correct print position.
  • the centering bushes in the radial extended fitting holes e.g. with a quick-curing adhesive.
  • Print image on the geometerically correct printing position of the printing press must to ensure that, on the one hand, those arranged on the centering device Master pens take up their correct position so that the later with the master pins provided with the centering elements exactly into the extended ones Fitting holes of the pressure screen can be inserted.
  • the monitors connected to the cameras are connected to the Registration marks of the printing film are exactly stamped in position-identical registration marks will.
  • the adjustment of the Master pens on the perforation system of the printing film and the exact fixation of the Registration marks on the monitors in special procedures with the help of one on the Centering device attachable master plate is carried out on an edge with the Masterroche has identical location holes and at right angles to one adjacent edge is provided with a perforation system, which is identical in position with the perforation system of the printing film.
  • the sieve frame is fixed on the adjustment table e.g. through sideways attacking clamping elements and fixed stops such that the registration marks of the Printing film come to rest in the area below the cameras.
  • the bridge on both of them Ends held over vertical guides and is arranged to be lowered.
  • the adjustable table that can be moved in the X-Y direction Registration marks of the printing film have been brought into line with those of the monitors are, the bridge is lowered so that the centering elements in the expanded Intervene fitting holes.
  • a CD 11 to be printed lies on the printing press 10 according to FIG. 1.
  • a printing screen 13 which can be lowered in the direction 12 arranged. 2 has a frame 13a and one on The printing film 14 attached to the printing screen according to FIG. 3.
  • the printing film 14 contains the printed image 15 to be printed on the CD 11.
  • the printing film is in the figures and enlarged the print image, i.e. not drawn to scale.
  • the lower part of the pressure frame 13a has two radially enlarged fitting bores 16, in which fitting bushes 17 by an adhesive shown below are attached.
  • the fitting bushes 17 have bores 18 that fit with Dowel pins 19 on the printing press 10 correspond.
  • the fitting sockets 17 are so arranged and fixed in the radially enlarged fitting bores 16 that when the printing screen 13 is placed on the printing press 10, the dowel pins 19 engage precisely in the bores 18 so that the printed image 15 is accurate comes to lie above the CD 11 to be printed. This ensures that the print image 15 is transferred exactly to the center of the CD 11, with its center 11a.
  • the optical centering device contains one Base plate 20 on which an adjustment table 21 is displaceable in the X-Y direction is arranged. The adjustment in the X-Y direction is carried out on not shown Way of operating knurled screws 22.
  • Above the adjustment table 21 is a bridge 25 adjustable in the vertical direction 24 is provided on the as optical scanning directions two cameras 26 and two with the dowel pins 19 Printing machine 10 positionally identical master pens 27 are arranged. The bridge is 25 held at their ends via vertical guide rails 28 and lowerable stored arranged.
  • the printing film 14 with the printed image 15 with two registration marks 29 provided that at a fixed, precisely defined distance from the center 15a of the Print image. Then the printing film 14 on the printing screen 13 is approximately attached centrally. The printing screen 13 with the roughly adjusted printing film 14 is then attached to the adjustment table 21 by means of clamping elements 23.
  • the two Cameras 26 are assigned to monitors 30 on which the registration marks 29 location-identical registration marks 31 are marked. By adjusting the adjustment table 21 in the X-Y direction are then the registration marks 29 of the printing film 14 with the Registration marks 31 of the monitors 30 are brought into register.
  • Fig. 6 shows one e.g. made of aluminum massive master plate 32, which on the lower edge two fitting holes 33 and one of three on the adjacent edge Has holes existing hole system 34.
  • the pass holes 33 are used for precisely fitting recording of the master pins 27 arranged on the bridge 25
  • the master plate 32 is placed on the adjustment table 21, three on the Centering device on an adjustable bar arranged adjusting pins 35 in the Engage holes 34.
  • the bridge 25 is lowered so that the master pins 27 engage precisely in the fitting holes 33.
  • the bar with the Adjusting pins 35 locked so that the master pins 27 are now in a fixed, immovable relationship to the adjustment pins 35 or to the hole system 34 stand.
  • the printing film 14 is placed on the master plate 32 so that the Engage adjusting pins 35 in the hole system 14a of the printing film 14.
  • the Hole systems 14a and 34 are designed identically to one another. Are with 29a designates the points at which the registration marks 29 of the printing film 14 close come to lie. Now the bridge 25 with the cameras 26 is so far lowered that the registration marks 29 detected and on the monitors as registration marks 31 are shown. The previous calibration process ensures that the Master pins 27 lie exactly above the fitting holes 33. As soon as the on the Monitors 30 shown registration marks 31 are marked or fixed is the Calibration ends and the master plate 32 is removed. After that it can actual alignment of the printed image arranged on the printing film on the start correct print position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Methods (AREA)
  • Screen Printers (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Structure Of Printed Boards (AREA)
  • Manufacturing Of Printed Wiring (AREA)

Claims (10)

  1. Procédé d'orientation exacte d'une image à imprimer (15) disposée sur une feuille à imprimer (14) dans une position d'impression géométriquement correcte d'une machine d'impression (10) en vue de l'impression de supports (11), par exemple de CD, la feuille à imprimer (14) étant dotée d'un système d'orifices (14a) orienté sur le centre de l'image (15a) et fixé sur un pochoir de sérigraphie (13) qui présente des alésages d'ajustement orientés sur le centre de l'image (15a) qui correspondent aux broches d'ajustement (19) de la machine d'impression (10) orientées sur le milieu du support (11a), caractérisé en ce
    a) que la feuille à imprimer (14) est dotée d'au moins deux repères (29) orientés sur le milieu de l'image (15a) et est fixée presque concentriquement sur le pochoir de sérigraphie (13),
    b) que le pochoir de sérigraphie (13) est fixé de manière réglable sur un dispositif de centrage optique qui présente des broches maítresses (27) de position identique aux broches d'ajustement (19) de la machine d'impression (10),
    c) que les repères (29) de la feuille à imprimer (14) recouvrent des repères (31) de position identique du dispositif de centrage optique,
    d) que des éléments de centrage (17) sont insérés de manière ajustée sur les broches maítresses (27) et
    e) que les broches maítresses (27) dotées des éléments de centrage (17) sont introduites avec du jeu dans les alésages d'ajustement (16) évasés radialement du pochoir de sérigraphie (13) et sont fixées dans leur position centrée.
  2. Procédé selon la revendication 1, caractérisé en ce
    a) que le pochoir de sérigraphie (13) est fixé à la feuille à imprimer (14) dans une position pratiquement centrale sur une table de réglage (21) déplaçable en direction X-Y du dispositif de centrage optique,
    b) que les repères (29) de la feuille à imprimer (14) sont lus par deux caméras (26) disposées au-dessus de la table de réglage (21) dans la région des repères (29) et sont affichés sur des moniteurs raccordés (30);
    c) que les repères (29) de la feuille à imprimer (14) apparaissant sur les moniteurs (30) sont amenés à recouvrir les repères (31) du dispositif de centrage de position identique et fermement imprimés sur les moniteurs (30), par déplacement de la table de réglage (21).
  3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que le dispositif de centrage est abaissé après le recouvrement des repères (29, 31) dans la direction du pochoir de sérigraphie (13) jusqu'à ce que les broches maítresses (27) disposées sur le dispositif de centrage entrent en prise avec les éléments de centrage (17) introduits dans les alésages d'ajustement (16) évasés radialement du pochoir de sérigraphie (13).
  4. Procédé selon la revendication 3, caractérisé en ce que les éléments de centrage (17) sont fixés par une colle à prise rapide, par exemple par une colle à deux composants ou par vissage, serrage, soudage (laser) ou autres dans les alésages d'ajustement évasés (16).
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que l'ajustage des broches maítresses (27) sur le système d'orifices (14a) de la feuille à imprimer (14) et la fixation précise des repères (31) sur les moniteurs (30) sont assurés dans des procédés particuliers à l'aide d'une plaque maítresse (32) qui peut être appliquée sur le dispositif de centrage et présente sur un bord des orifices d'ajustement (33) de position identique aux broches maítresses (27) et qui est dotée en angle droit par rapport à celui-ci sur un bord adjacent d'un système d'orifices (34) qui est de position identique par rapport au système d'orifices (14a) de la feuille à imprimer (14).
  6. Procédé selon la revendication 5, caractérisé en ce
    que la plaque maítresse (32) est placée par l'intermédiaire du système d'orifices (34) sur des broches d'ajustement réglables correspondantes (35) du dispositif de centrage,
    que les broches maítresses (27) du dispositif de centrage sont introduites de manière ajustée dans les orifices d'ajustement (33) de la plaque maítresse (33) et
    qu'ensuite les broches d'ajustement (35) sont bloquées.
  7. Procédé selon l'une des revendications 5 ou 6, caractérisé en ce
    qu'après l'orientation des broches maítresses (27) sur le système d'orifices (34) de la plaque maítresse (32), la feuille à imprimer (14) est placée par l'intermédiaire de son système d'orifices (14a) sur les broches d'ajustement (35) fixées du dispositif de centrage,
    que les caméras (26) disposées dans la région au-dessus des repères (29) sur le dispositif de centrage saisissent les repères (29) de la feuille à imprimer (14) et les représentent sur les moniteurs (30) et que la position des repères (31) représentés sur les moniteurs (30) est fixée ou marquée par des moyens appropriés.
  8. Dispositif de centrage optique en vue de l'exécution du procédé selon l'une des revendications 1 à 7, caractérisé en ce
    a) que la table de réglage (21) déplaçable en direction X-Y est disposée sur une plaque de base (20) du dispositif de centrage optique,
    b) qu'au-dessus de la table de réglage (21) est prévu un pont (25) déplaçable en direction perpendiculaire (24) en vue de loger et de maintenir la caméra (26) et les broches maítresses (27), et
    c) que les broches maítresses (27) dotées des éléments de centrage (17) peuvent être introduites par un abaissement en direction perpendiculaire (24) dans les alésages d'ajustement (16) évasés radialement.
  9. Dispositif de centrage selon la revendication 8, caractérisé en ce que des douilles de centrage (17), des plaques de fixation ou autres sont prévues comme éléments de centrage.
  10. Dispositif de centrage selon l'une des revendications 8 ou 9, caractérisé en ce que le pont (25) est maintenu à ses extrémités par l'intermédiaire de rails de guidage perpendiculaires (28) et est logé de manière à pouvoir être abaissé.
EP96201641A 1995-06-22 1996-06-12 Procédé pour aligner exactement une image à imprimer dans une position géométriquement correcte d'une machine d'impression Expired - Lifetime EP0749829B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19522676A DE19522676A1 (de) 1995-06-22 1995-06-22 Verfahren zur exakten Ausrichtung eines Druckbildes auf eine geometrisch richtige Druckposition einer Druckmaschine
DE19522676 1995-06-22

Publications (2)

Publication Number Publication Date
EP0749829A1 EP0749829A1 (fr) 1996-12-27
EP0749829B1 true EP0749829B1 (fr) 1998-12-09

Family

ID=7764984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96201641A Expired - Lifetime EP0749829B1 (fr) 1995-06-22 1996-06-12 Procédé pour aligner exactement une image à imprimer dans une position géométriquement correcte d'une machine d'impression

Country Status (6)

Country Link
US (1) US5699742A (fr)
EP (1) EP0749829B1 (fr)
JP (1) JPH09109366A (fr)
CN (1) CN1076667C (fr)
AT (1) ATE174264T1 (fr)
DE (2) DE19522676A1 (fr)

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Also Published As

Publication number Publication date
CN1076667C (zh) 2001-12-26
CN1145853A (zh) 1997-03-26
DE19522676A1 (de) 1997-01-02
ATE174264T1 (de) 1998-12-15
US5699742A (en) 1997-12-23
EP0749829A1 (fr) 1996-12-27
DE59600940D1 (de) 1999-01-21
JPH09109366A (ja) 1997-04-28

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