EP0363842B1 - Procédé pour la fabrication de plaques d'impression - Google Patents

Procédé pour la fabrication de plaques d'impression Download PDF

Info

Publication number
EP0363842B1
EP0363842B1 EP89118604A EP89118604A EP0363842B1 EP 0363842 B1 EP0363842 B1 EP 0363842B1 EP 89118604 A EP89118604 A EP 89118604A EP 89118604 A EP89118604 A EP 89118604A EP 0363842 B1 EP0363842 B1 EP 0363842B1
Authority
EP
European Patent Office
Prior art keywords
belt
transfer
surface elements
transfer belt
roller
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
EP89118604A
Other languages
German (de)
English (en)
Other versions
EP0363842A3 (en
EP0363842A2 (fr
Inventor
Hartmut Fuhrmann
Reinhard Plaschka
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 EP0363842A2 publication Critical patent/EP0363842A2/fr
Publication of EP0363842A3 publication Critical patent/EP0363842A3/de
Application granted granted Critical
Publication of EP0363842B1 publication Critical patent/EP0363842B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1091—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by physical transfer from a donor sheet having an uniform coating of lithographic material using thermal means as provided by a thermal head or a laser; by mechanical pressure, e.g. from a typewriter by electrical recording ribbon therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1075—Mechanical aspects of on-press plate preparation

Definitions

  • the invention relates to a method and an apparatus for the production of printing forms for planographic printing, in which ink-accepting surface elements are transferred from a thermal transfer ribbon to the printing form under the action of heat and pressure.
  • a method of this type in which ink-accepting surface elements are transferred from a thermal transfer ribbon, hereinafter called transfer ribbon, to a water-accepting surface of a printing form by means of a control element. Selective heat is generated by the control element, so that individual ink-accepting points of the transfer ribbon are applied to the surface of the printing form.
  • a printing form is provided according to the known method, which contains a heat-insulating material at least on the surface. This prevents the heat generated by the thermal print head from flowing away quickly and ensures that the layer is transferred in a precisely defined manner.
  • the invention has for its object to develop a method of the type mentioned in such a way that a good transfer of the ink-accepting surface elements can be carried out on the printing form.
  • auxiliary belt enables the rigid control element (e.g. thermal print head) to be contrasted with a deformable counter-pressure element, so that a complete transfer of ink-accepting surface elements is possible. This prevents two inelastic parts from being pressed against each other. Lower abrasion also extends the life of the components.
  • the measure according to the invention also makes the transfer to large printing form roller diameters (200 to 400 mm) unproblematic, even if line thermal print heads are used as control elements.
  • the ink-accepting surface elements are transferred from the transfer belt to a transfer belt in the first process stage and from this to the printing form only in the second process stage.
  • the additional roller interacting with the printing form can be equipped with a heat.
  • the intermediate rollers can be made of rubber, so that a rigid component presses against an elastic component and thus less abrasion and, above all, the complete transfer of surface elements over the entire printing width is possible.
  • the transfer belt can be an endless belt running over rollers. Depending on the material and design of the transfer belt, in some cases this is expediently unwound from a supply spool.
  • the take-up tape is unwound from a supply reel.
  • a relatively simple component is used for the actual transfer of the ink-accepting surface elements to the printing form surface with a heated roller, which can also cope with increased energy requirements more easily than a control element (e.g. line thermal print head).
  • a control element e.g. line thermal print head
  • the heat required to transfer the ink-accepting surface elements to the die surface can also be applied in other ways; e.g. B. by heating the ink-accepting surface elements by means of radiation energy or by ohmic heating of the entire band. In the latter case, ohmic heating can also take place via a metal layer which is vapor-deposited on the transfer belt and carries the ink-accepting surface elements.
  • the invention extends to a device which is characterized by the features of claim 4.
  • Figures 1 to 4 each show a schematic representation of an embodiment of the invention.
  • a cylindrical printing form 10 which cooperates with a rubber cylinder 11 of a printing machine, not shown.
  • the printing form 10 has an ink-repellent surface, to which a device 12 to 15 is assigned, with which the ink-accepting surface elements, which represent image information to be printed, can be applied to the printing form surface.
  • the individual FIGS. 1 to 4 each show an embodiment of this device 12 to 15.
  • the device 12 is equipped with a thermal transfer ribbon 22 wound on spools 20, 21, a control element, for example a thermal print head 23, and an auxiliary ribbon 24 designed as a transfer ribbon.
  • the thermal print head 23 is controlled by means of a control unit (not shown) in accordance with an image to be transferred, in such a way that it introduces heat and pressure onto the transfer belt 22 at each pixel and thus enables the ink-accepting coating of the transfer belt 22 to be transferred to the transfer belt 24 at a specific point.
  • an elastic counter-pressure roller 25 is provided opposite the print head, which can consist, for example, of rubber, silicone or another elastomer.
  • the transfer belt 22 is rewound and on the other hand the transfer belt 24 is brought into circulation around the counter roller 25, a heated roller 26 and an auxiliary roller 27.
  • the ink-accepting surface elements applied to the transfer belt 24 are guided between the heatable roller 26 and the printing form 10, the surface elements being transferred from the transfer belt 24 to the printing form surface 28 by the effect of the temperature and the pressure exerted by the pressure roller 26.
  • the material it is possible for the material to be stronger on the printing form surface 28 by means of a downstream heat source 29 fix or preheat the printing plate surface by an upstream heat source, not shown.
  • the transfer belt 24 should have a material composition and a surface texture that enables a sharp-edged covering with ink-accepting surface elements. Another requirement is the dimensional stability, which ensures a dimensionally accurate transfer of the surface elements to the printing form.
  • Suitable materials for the transfer belt 24 are e.g. B. polyester, polyester coated with silicone, polyvinyldenfluoride, polyimide (e.g. Kapton), polytretrafluoroethylene, glass fiber reinforced PTFE film and acetate film or one of the aforementioned materials with one-sided or double-sided metallic vapor deposition or metal foils with or without coating with one of the above Plastics.
  • the transmission belt 24 is designed as a reusable endless belt, which is guided in the circulation system.
  • a transfer tape 24 ' which can be unwound from a supply reel 30' is provided, which is wound onto a second reel 31 after the transfer operation. Otherwise, the device and the method to be carried out according to FIG. 2 correspond to that of FIG. 1.
  • FIG. 3 Another embodiment of a transmission device 14 is shown in FIG. 3.
  • the thermal transfer ribbon 22 is heated by the supply reel 20 Roller 26 guided before the tape is wound onto the take-up roll 21.
  • the control element 23 acts together with the counter roller 25 on the transfer belt 22 and in this case an auxiliary belt designed as a receiving belt 35.
  • the print head 23 is driven in such a way that it drives the dots containing no image information and thus transfers the surface elements that do not represent image information to the recording tape 35. The surface elements which correspond to the image to be printed thus remain on the transfer belt 22.
  • the take-up tape 35 is unwound from a supply reel 36 and rinsed onto a roll 37, as shown in FIG.
  • the arrangement according to FIG. 4 differs from that according to FIG. 3 in that a common spool 38 is provided for the transfer belt 22 and the receiving belt 35.
  • an IR or other radiation heater 39 is arranged here in such a way that the heat rays hit the transfer belt 22 in the vicinity of the transfer region 40 and thereby heat the transfer belt 22.
  • a non-heated roller 26 is provided.
  • Such a heat source 39 can of course also be used in the device 12 or 13 according to FIGS. 1 and 2, specifically for heating the auxiliary or transfer belt 24, 24 '.
  • a band is selected that contains or consists of at least one resistance element.
  • a metal layer that is vapor-deposited onto a band consisting, for example, of plastic can assume this role.
  • the resistance element is connected to a voltage source, for example, via sliding contacts.
  • the devices described cannot only be used for printing presses and in connection with cylindrical printing forms. Rather, they are suitable for all duplicating devices and are independent of the design of the printing form (flat, cylindrical).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Electronic Switches (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Claims (8)

  1. Procédé de production de formes d'impression (10) pour l'impression à plat, dans lequel des éléments de surface retenant l'encre sont reportés d'une bande de transfert (22) à la forme d'impression (10) par l'action de la chaleur et de la pression
    caractérisé
    en ce que le report des éléments de surface est exécuté en deux étapes de procédé, avec utilisation d'une bande auxiliaire (24, 24', 35) à laquelle est associé un élément de pression (25).
  2. Procédé selon la revendication 1, caractérisé en ce que les éléments de surface retenant l'encre sont reportés sur une bande auxiliaire (24, 24') formant une bande de report et, de celle-ci, à la forme d'impression (10) au moyen d'un cylindre chauffé (26).
  3. Procédé selon la revendication1, caractérisé en ce que, initialement, les éléments de surface ne représentant pas d'information image, sont reportés de la bande de transfert (22) à une bande auxiliaire (35) formant la bande réceptrice et qu'ensuite, les éléments de surface qui restent sur la bande de transfert (22), et qui représentent l'information image, sont reportés à la forme d'impression (10) au moyen d'un rouleau chauffé (26).
  4. Dispositif pour la mise en oeuvre du procédé selon la revendication 1, comprenant une bande de transfert (22) et un dispositif de commande (23) pour le report d'éléments de surface de la bande de transfert (22) à une forme d'impression (10), caractérisé en ce qu'il est prévu une bande auxiliaire (24, 24', 35) sur laquelle des éléments de surface peuvent être reportés à partir de la bande de transfert (22) au moyen du dispositif de commande (23) en coopération avec le contre-cylindre élastique (25) qui donne appui à la bande auxiliaire (24, 24', 35), et en ce qu'à la forme d'impression (10), est associé à un cylindre (26) qui est constitué pour reporter des éléments de surface retenant l'encre, soit de la bande de transfert (22), soit de la bande auxiliaire (24, 24', 35), sur la forme d'impression.
  5. Dispositif selon la revendication 4, caractérisé en ce que le cylindre (26) qui coopère avec la forme d'impression (10) est constitué pour pouvoir être chauffé.
  6. Dispositif selon la revendication 4, caractérisé en ce qu'il est prévu des moyens (39) à l'aide desquels la bande de transfert (22) ou la bande auxiliaire (24) peut être chauffée.
  7. Dispositif selon la revendication 6, caractérisé en ce que le moyen (39) utilisé pour chauffer la bande de transfert (22) ou la bande auxiliaire (24) est un dispositif de chauffage à rayonnement.
  8. Dispositif selon la revendication 6, caractérisé en ce qu'il est prévu des moyens pour le chauffage ohmique à résistance de la bande de transfert ou de la bande auxiliaire.
EP89118604A 1988-10-08 1989-10-06 Procédé pour la fabrication de plaques d'impression Expired - Lifetime EP0363842B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3834270A DE3834270A1 (de) 1988-10-08 1988-10-08 Verfahren zur herstellung von druckformen
DE3834270 1988-10-08

Publications (3)

Publication Number Publication Date
EP0363842A2 EP0363842A2 (fr) 1990-04-18
EP0363842A3 EP0363842A3 (en) 1990-11-22
EP0363842B1 true EP0363842B1 (fr) 1993-12-08

Family

ID=6364661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89118604A Expired - Lifetime EP0363842B1 (fr) 1988-10-08 1989-10-06 Procédé pour la fabrication de plaques d'impression

Country Status (4)

Country Link
US (1) US4958564A (fr)
EP (1) EP0363842B1 (fr)
JP (1) JP3031927B2 (fr)
DE (2) DE3834270A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1251011A2 (fr) 2001-04-20 2002-10-23 MAN Roland Druckmaschinen AG Méthode pour varier la densité en pleine teinte des couleurs pour l'impression offset dans une machine d'impression rotative

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3837978A1 (de) * 1988-11-09 1990-05-10 Roland Man Druckmasch Verfahren zur bebilderung eines druckformzylinders
US5072671A (en) * 1988-11-09 1991-12-17 Man Roland Druckmaschinen Ag System and method to apply a printing image on a printing machine cylinder in accordance with electronically furnished image information
DE3941303C1 (fr) * 1989-12-14 1990-12-13 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
US5156089A (en) * 1990-12-17 1992-10-20 Gerber Scientific Products, Inc. Method and apparatus for making a painting screen using an ink jet printer for printing a graphic on the screen emulsion
JPH04224964A (ja) * 1990-12-27 1992-08-14 Brother Ind Ltd 電子スタンプ装置
US5129321A (en) * 1991-07-08 1992-07-14 Rockwell International Corporation Direct-to-press imaging system for use in lithographic printing
US5440987A (en) * 1994-01-21 1995-08-15 Presstek, Inc. Laser imaged seamless lithographic printing members and method of making
US5738013A (en) * 1996-05-14 1998-04-14 New England Science & Specialty Products, Inc. Method of making a lithographic printing plate with an ink jet fluid material
JP3422754B2 (ja) * 2000-05-31 2003-06-30 三菱重工業株式会社 印刷用版材の作製方法、再生方法及び印刷機
DE10054284B4 (de) * 2000-11-02 2010-04-08 Manroland Ag Verfahren zur Behandlung einer löschbaren lithographischen Druckform
DE10153794A1 (de) * 2001-10-31 2003-05-22 Roland Man Druckmasch Verfahren und Vorrichtung zur integrierten Druckformerzeugung in einer Verarbeitungsmaschine
US7439995B2 (en) * 2002-02-08 2008-10-21 Kodak Polychrome Graphics, Gmbh Method and apparatus for laser induced thermal transfer printing
US6894713B2 (en) 2002-02-08 2005-05-17 Kodak Polychrome Graphics Llc Method and apparatus for laser-induced thermal transfer printing
EP1477308B1 (fr) 2003-05-14 2006-07-19 Agfa-Gevaert Procédé d' impression à jet d'encre "ordinateur-vers-plaque"

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR457270A (fr) * 1913-04-30 1913-09-15 J Voirin Des Ets Procédé et dispositif pour l'obtention directe des planches d'impression utilisées dans les machines à report sur caoutchouc ou autres matières plastiques
CH551288A (de) * 1972-04-12 1974-07-15 Ritzerfeld Gerhard Verfahren zur herstellung eines hektographischen umdruckoriginals auf thermischem wege.
US3964389A (en) * 1974-01-17 1976-06-22 Scott Paper Company Printing plate by laser transfer
JPS5839457A (ja) * 1981-09-04 1983-03-08 Fuji Xerox Co Ltd 謄写用原版作成方法
DE3248178C2 (de) * 1982-12-27 1987-02-19 Forschungsgesellschaft Druckmaschinen E.V., 6000 Frankfurt Bildmäßige Beschichtung von Druckformen für den Flachdruck
DE3507418A1 (de) * 1985-03-02 1986-09-04 Basf Ag, 6700 Ludwigshafen Verfahren zur uebertragung von informationen auf eine offset-druckplatte
JPS62264953A (ja) * 1986-05-13 1987-11-17 Fuji Xerox Co Ltd 感熱穿孔印刷法
DE3636129A1 (de) * 1986-10-23 1988-05-05 Man Technologie Gmbh Druckform fuer den flachdruck

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1251011A2 (fr) 2001-04-20 2002-10-23 MAN Roland Druckmaschinen AG Méthode pour varier la densité en pleine teinte des couleurs pour l'impression offset dans une machine d'impression rotative

Also Published As

Publication number Publication date
EP0363842A3 (en) 1990-11-22
DE3834270C2 (fr) 1992-02-13
JPH02217247A (ja) 1990-08-30
DE58906369D1 (de) 1994-01-20
JP3031927B2 (ja) 2000-04-10
EP0363842A2 (fr) 1990-04-18
US4958564A (en) 1990-09-25
DE3834270A1 (de) 1990-04-12

Similar Documents

Publication Publication Date Title
EP0363842B1 (fr) Procédé pour la fabrication de plaques d'impression
DE3529295C2 (fr)
DE19530284C2 (de) Verfahren und Vorrichtungen zur Übertragung von Druckfarbe
DE69826545T2 (de) Druckmaschine mit auswechselbarer Vorrichtung zum Aufbringen von Farbe
EP0159474B1 (fr) Dispositif d'encrage pour machines d'impression offset
DE69617338T2 (de) Segmentiertes flexibles Heizelement zum Trocknen eines gedruckten Bildes
DE3133021C2 (fr)
EP1313618B1 (fr) Installation pour produire en continu des bandes textiles imprimees, notamment des bandes d'etiquettes imprimees
DE4213245A1 (de) Vorrichtung zum beidseitigen bedrucken eines druckpapierbandes
EP0889782B1 (fr) Procede pour imprimer un materiau support
EP0179977B1 (fr) Méthode et appareil pour l'estampage à chaud d'un substrat
DE60225534T2 (de) Verfahren und vorrichtung für direktzylinderdrucker
DE69709809T2 (de) Druckverfahren
DE3546502C2 (fr)
DE69517089T2 (de) Druckverfahren mit wirtschaftlicher Ausnutzung des Übertragungsmaterials
DE69303947T2 (de) Druckwalzenschutz in einem randlosen Thermo-Drucksystem
DE19724889C2 (de) Bildaufzeichnungs-Vorrichtung
DE102017124115B4 (de) Verfahren und Steuereinheit zur Fixierung eines Druckbildes
EP0368180B1 (fr) Procédé de fabrication d'un cylindre d'impression portant une image
DE69616570T2 (de) Thermodrucker mit Blattandruckmittel
DE3686826T2 (de) Bandkassette fuer drucker.
DE102008055141A1 (de) Betrieb eines Kaltfolienaggregates mit einem Druckwerk
EP0558010A1 (fr) Procédé et dispositif pour imprimer des matériaux en bande
DE102017124114A1 (de) Verfahren und Steuereinheit zur Anpassung einer Druckvorrichtung an einen Aufzeichnungsträger
DE19706295A1 (de) Verfahren zum Drucken von Mustern

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE FR GB LI NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB LI NL

17P Request for examination filed

Effective date: 19901018

17Q First examination report despatched

Effective date: 19920911

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI NL

REF Corresponds to:

Ref document number: 58906369

Country of ref document: DE

Date of ref document: 19940120

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940311

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20030930

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050501

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20050501

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: M.A.N.-ROLAND DRUCKMASCHINEN AKTIENGESELLSCHAFT

Free format text: M.A.N.-ROLAND DRUCKMASCHINEN AKTIENGESELLSCHAFT#CHRISTIAN-PLESS-STR. 6-30#D-63012 OFFENBACH A.M. (DE) -TRANSFER TO- M.A.N.-ROLAND DRUCKMASCHINEN AKTIENGESELLSCHAFT#CHRISTIAN-PLESS-STR. 6-30#D-63012 OFFENBACH A.M. (DE)

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: MANROLAND AG

Free format text: M.A.N.-ROLAND DRUCKMASCHINEN AKTIENGESELLSCHAFT#CHRISTIAN-PLESS-STR. 6-30#D-63012 OFFENBACH A.M. (DE) -TRANSFER TO- MANROLAND AG#MUEHLHEIMER STRA?E 341#63075 OFFENBACH (DE)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20081015

Year of fee payment: 20

Ref country code: DE

Payment date: 20081022

Year of fee payment: 20

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20081014

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20081021

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20091005

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20091005