EP0400595B1 - Formzylinder in einer Offsetdruckmaschine für eine Direktbebilderung - Google Patents

Formzylinder in einer Offsetdruckmaschine für eine Direktbebilderung Download PDF

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Publication number
EP0400595B1
EP0400595B1 EP90110233A EP90110233A EP0400595B1 EP 0400595 B1 EP0400595 B1 EP 0400595B1 EP 90110233 A EP90110233 A EP 90110233A EP 90110233 A EP90110233 A EP 90110233A EP 0400595 B1 EP0400595 B1 EP 0400595B1
Authority
EP
European Patent Office
Prior art keywords
forme cylinder
radiation
cylinder according
thermal transfer
forme
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
EP90110233A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0400595A3 (de
EP0400595A2 (de
Inventor
Josef Schneider
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 EP0400595A2 publication Critical patent/EP0400595A2/de
Publication of EP0400595A3 publication Critical patent/EP0400595A3/de
Application granted granted Critical
Publication of EP0400595B1 publication Critical patent/EP0400595B1/de
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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/70—Forming the printing surface directly on the form cylinder

Definitions

  • the invention relates to a forme cylinder in an offset printing machine for direct imaging, preferably by means of a thermal transfer method.
  • a generic forme cylinder is known from DE-C2 32 48 178.
  • a thermal transfer film is guided past this, which has a thermo- or electrothermal-sensitive coating on its side facing the forme cylinder.
  • elements are released from the coating by the supply of energy, transferred to the forme cylinder and anchored there.
  • a disadvantage is the relatively high energy requirement for transferring the coating elements, especially since heat is dissipated relatively quickly via the aluminum surface of the forme cylinder.
  • the invention has for its object to provide a forme cylinder by means of which the energy to be used by the pixel transmission unit is substantially reduced.
  • the forme cylinder has a radiation-permeable cylinder jacket and in that at least one radiation source directed onto the inner jacket surface is arranged in its interior.
  • the energy supply can be used to preheat the surface, to support the thermal transfer step or to burn in or photochemically anchor the printing oleophilic image elements, but also advantageously to erase the subject by softening, evaporating, decomposing, burning off the image elements or one of these with the adhesive layer connecting the cylinder.
  • the arrangement in the interior of the forme cylinder has the further advantage that, apart from the space required for the thermal transfer unit, no additional space is required on its outer circumference, so that there is enough free space for the arrangement of the inking and dampening application rollers and the blanket cylinder.
  • Advantageous embodiments of the invention can be found in the subclaims.
  • a thermal transfer unit for direct imaging of the forme cylinder 1 is set up there, which consists of a thermal transfer film 4 that can be unwound between two rollers 2, 3 and a pixel transfer unit 5 that can be set on the back of the thermal transfer film 4.
  • the ink and dampening rollers which can also be set on the forme cylinder 1 and the blanket cylinder have been omitted since they are of no importance for the present invention.
  • the thermal transfer film 4 has a thermosensitive or electrothermosensitive coating on its side abutting the forme cylinder 1, which consists of an oleophilic substance.
  • a carrier layer of the thermal transfer film 4 facing the image transfer unit 5 is a good heat conductor.
  • the forme cylinder 1 has a surface with a hydrophilic property.
  • the pixel transmission unit 5 is preferably by means of several, arranged in several lines, energy transmitting Elements 6 in contact with the carrier layer of the thermal transfer film 4.
  • the elements 6 can be designed, for example, as heating elements, pin electrodes or semiconductor lasers. According to digital image information transmitted to the pixel transmission unit 5, the elements 6 are activated precisely when color is to be transferred at this point of the forme cylinder 1 during the later printing process. Due to the energy effect of the elements 6, very small particles 7 corresponding in size to a pixel are detached from the coating and deposited on the forme cylinder 1. They solidify on the surface of the forme cylinder 1 and, because of their oleophilic property, form the ink-transferring areas there. The particles 7 have been significantly enlarged in the drawing in order to be able to represent them at all.
  • the forme cylinder 1 has a radiolucent cylinder jacket and in its interior at least one radiation source 8 directed at the inner jacket surface.
  • the cylinder jacket is made of glass ceramic and the radiation source 8 arranged in the interior is a lamp emitting infrared rays.
  • the heat radiation can be directed onto a specific circumferential area of the cylinder jacket by means of a reflector 9 arranged on its rear side. It serves in the peripheral area to which the thermal transfer unit can be adjusted from the outside to support the elements 6.
  • the coating is preheated to the extent that only the remaining energy required for melting has to be transferred from the elements 6. This significantly speeds up the imaging process.
  • FIG. 2 The configuration shown in FIG. 2 is essentially the same as that of FIG. 1 with regard to the elements arranged outside a forme cylinder 11.
  • a thermal transfer unit consists of a thermal transfer film 14 that can be unwound between two rollers 12, 13 and a pixel transfer unit 15, the elements of which can be set on the rear side 16 corresponding to one digital image information can be activated individually.
  • particles 17 are released from the coating side of the thermal transfer film 14 facing the forme cylinder 11 and deposited on its surface.
  • a plurality of radiation sources 18, 19, 20 and 21 are arranged inside the forme cylinder 11, which likewise has a radiation-permeable surface.
  • the first radiation source 18 is directed onto a peripheral region of the inner lateral surface of the forme cylinder 11, which is upstream of the region in the direction of rotation of the cylinder in which the thermal transfer unit can be set from the outside.
  • the radiation source 18 can emit infrared radiation or visible light and is intended to preheat the cylinder surface.
  • the second radiation source 19 is directed onto the peripheral region of the inner lateral surface of the forme cylinder 11, in which the thermal transfer unit can be set from the outside. It can emit infrared radiation or visible light and thereby further reduce the energy to be applied by the elements 16 for the detachment of the particles 17.
  • the third radiation source 19 is directed to a peripheral region of the inner lateral surface, which is arranged downstream of the region in the direction of rotation of the cylinder 11 in which the thermal transfer unit can be set from the outside. Depending on the type of oleophilic substance, it can serve to effect or accelerate the hardening of the particles 17 by expelling solvents, by crosslinking polymers or by baking. Depending on requirements, the radiation source 19 can therefore emit infrared radiation, visible light or actinic (UV) radiation.
  • UV actinic
  • a fourth radiation source 21 is used, after the Printing process to effect or support the removal of the particles 17. This can be done by means of infrared radiation by liquefaction and evaporation, by direct sublimation or by softening and subsequent doctoring using a doctor blade 22 which can be set on the forme cylinders 11.
  • the erasure of the forme cylinder 11 can be carried out or supported, independently of the method used for the imaging, advantageously by means of a radiation source arranged in the interior of the cylinder.
  • the imaging may have been done by a printhead similar to an inkjet printer.
  • Another possibility of applying energy to the cylinder surface is that of electromagnetic radiation.
  • electromagnetic radiation Depending on the type of oleophilic substance used, the types of radiation sources mentioned can also be meaningfully combined in other ways than in the above exemplary embodiments.
  • the radiation can be bundled or directed appropriately (slit, surface, folding of the radiation path, simultaneous radiation from outside and inside, etc.).
  • the radiation effect can extend to the entire cylinder surface or only to parts of it (partial deletion of the printing form).
  • the radiation can penetrate the cylinder jacket almost unhindered, essentially the particles are heated, while the cylinder jacket - in contrast to the pure heat effect on a metal cylinder from the outside - remains largely cold.
  • Glass and glass ceramics also have low thermal conductivity (therefore little energy loss to the forme cylinder), a low coefficient of thermal expansion (therefore high dimensional stability and low tendency to stress cracks (as well as high temperature resistance (important for extinguishing the cylinder at high temperatures).
  • the invention can also be used in connection with a method disclosed in the applicant's older, non-prepublished application P 38 40 793.0, in which first a sublimable substance in particle form as an anchoring or release layer for a subsequently applied oleophilic substance on the forme cylinder is transmitted. Radiation coming from the interior of the forme cylinder enables direct access to the anchoring or release layer, so that, for example, its decomposition by means of infrared radiation to extinguish the forme cylinder is considerably simplified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Rotary Presses (AREA)
  • Ink Jet (AREA)
EP90110233A 1989-06-01 1990-05-30 Formzylinder in einer Offsetdruckmaschine für eine Direktbebilderung Expired - Lifetime EP0400595B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3917844 1989-06-01
DE3917844A DE3917844C1 (enrdf_load_stackoverflow) 1989-06-01 1989-06-01

Publications (3)

Publication Number Publication Date
EP0400595A2 EP0400595A2 (de) 1990-12-05
EP0400595A3 EP0400595A3 (de) 1991-06-05
EP0400595B1 true EP0400595B1 (de) 1993-11-24

Family

ID=6381825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90110233A Expired - Lifetime EP0400595B1 (de) 1989-06-01 1990-05-30 Formzylinder in einer Offsetdruckmaschine für eine Direktbebilderung

Country Status (5)

Country Link
US (1) US5045697A (enrdf_load_stackoverflow)
EP (1) EP0400595B1 (enrdf_load_stackoverflow)
JP (1) JP2856844B2 (enrdf_load_stackoverflow)
CA (1) CA2017375C (enrdf_load_stackoverflow)
DE (2) DE3917844C1 (enrdf_load_stackoverflow)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004511A1 (de) * 1990-02-14 1991-08-22 Hoechst Ag Vorrichtung zum einbrennen von lichtempfindlichen schichten waehrend der herstellung von druckformen
DE4039107B4 (de) * 1990-12-07 2004-08-26 Man Roland Druckmaschinen Ag Vorrichtung zum bildmäßigen Beschreiben und Löschen einer Druckform
JP3207873B2 (ja) * 1991-07-17 2001-09-10 キヤノン株式会社 多値記録物の製造方法及び多値記録物の製造装置
DE4123959C1 (enrdf_load_stackoverflow) * 1991-07-19 1993-02-04 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4130264A1 (de) * 1991-09-12 1993-03-18 Roland Man Druckmasch Formzylinder in einer offsetdruckmaschine
JPH05262013A (ja) * 1992-03-24 1993-10-12 Toshiba Corp 記録装置
DE4212582A1 (de) * 1992-04-15 1993-10-21 Hell Ag Linotype Verfahren zur Gravur von Druckformen sowie Druckform zur Durchführung des Verfahrens
US5816161A (en) * 1994-07-22 1998-10-06 Man Roland Druckmaschinen Ag Erasable printing plate having a smooth pore free metallic surface
US5819661A (en) * 1995-01-23 1998-10-13 Presstek, Inc. Method and apparatus for laser imaging of lithographic printing members by thermal non-ablative transfer
US5743188A (en) * 1995-10-20 1998-04-28 Eastman Kodak Company Method of imaging a zirconia ceramic surface to produce a lithographic printing plate
US5839369A (en) * 1995-10-20 1998-11-24 Eastman Kodak Company Method of controlled laser imaging of zirconia alloy ceramic lithographic member to provide localized melting in exposed areas
US5855173A (en) * 1995-10-20 1999-01-05 Eastman Kodak Company Zirconia alloy cylinders and sleeves for imaging and lithographic printing methods
US5836249A (en) * 1995-10-20 1998-11-17 Eastman Kodak Company Laser ablation imaging of zirconia-alumina composite ceramic printing member
US5839370A (en) * 1995-10-20 1998-11-24 Eastman Kodak Company Flexible zirconia alloy ceramic lithographic printing tape and method of using same
US5870956A (en) * 1995-12-21 1999-02-16 Eastman Kodak Company Zirconia ceramic lithographic printing plate
DE19602328A1 (de) 1996-01-24 1997-07-31 Roland Man Druckmasch Verfahren zum Bebildern einer löschbaren Druckform
DE19640649A1 (de) * 1996-10-02 1998-04-16 Roland Man Druckmasch Antrieb für eine Bogendruckmaschine
NL1004179C2 (nl) * 1996-10-03 1998-04-06 Oce Tech Bv Inrichting voor het decoderen van keramische en glazen dragers en tonerpoeder te gebruiken in deze inrichting.
DE19654018A1 (de) * 1996-12-21 1998-06-25 Roland Man Druckmasch Verfahren und Vorrichtung zum Erzeugen einer Durckbildverteilung
US5836248A (en) * 1997-05-01 1998-11-17 Eastman Kodak Company Zirconia-alumina composite ceramic lithographic printing member
US5893328A (en) * 1997-05-01 1999-04-13 Eastman Kodak Company Method of controlled laser imaging of zirconia-alumina composite ceramic lithographic printing member to provide localized melting in exposed areas
GB9720595D0 (en) * 1997-09-30 1997-11-26 Horsell Graphic Ind Ltd Planographic printing
US5925496A (en) * 1998-01-07 1999-07-20 Eastman Kodak Company Anodized zirconium metal lithographic printing member and methods of use
EP0940252A1 (en) * 1998-03-03 1999-09-08 Agfa-Gevaert N.V. Rotary printing press with an integrated image-setter comprising a hollow transparent cylinder as exposure drum
US5927207A (en) * 1998-04-07 1999-07-27 Eastman Kodak Company Zirconia ceramic imaging member with hydrophilic surface layer and methods of use
EP0950925A3 (en) * 1998-04-13 2003-04-09 Fuji Photo Film Co., Ltd. Plate making apparatus, printing method and printing apparatus, packing sheet material for printing plate material, and plate material placement method and apparatus
US6190828B1 (en) 1999-04-27 2001-02-20 Agfa-Gevaert, N.V. Method for making a lithographic printing master
DE69907867T2 (de) * 1999-04-27 2004-03-11 Agfa-Gevaert Verfahren zur Herstellung einer lithographischen Druckplatte
US6534241B2 (en) 2000-01-12 2003-03-18 Howard A. Fromson Method of actinically imaging a semiconductor
US6355398B1 (en) * 2000-01-12 2002-03-12 Howard A. Fromson Method of actinically imaging
DE10023128A1 (de) * 2000-05-11 2001-11-15 Roland Man Druckmasch Abtastverfahren und Abtastvorrichtung zur optischen Dichtemessung
DE10054284B4 (de) * 2000-11-02 2010-04-08 Manroland Ag Verfahren zur Behandlung einer löschbaren lithographischen Druckform
DE10063819B4 (de) * 2000-12-21 2006-02-02 Man Roland Druckmaschinen Ag Maskenerstellung zur Herstellung einer Druckform
DE10064570A1 (de) * 2000-12-22 2002-07-11 Nexpress Solutions Llc Bestrahlungseinrichtung für eine Fixiervorrichtung
DE10311514B4 (de) * 2003-03-17 2005-10-06 Heidelberger Druckmaschinen Ag Verfahren zum Betreiben eines Offset-Druckwerks und Offset-Druckwerk
JP2004316299A (ja) 2003-04-17 2004-11-11 Riken Kaki Kogyo Kk 自動車用ドアチェッカ
DE102007007183A1 (de) * 2007-02-14 2008-08-21 Man Roland Druckmaschinen Ag Verfahren zur Herstellung von Druckformen
EP2849809A4 (en) * 2012-05-18 2016-06-22 Angelini Pharma Inc APPARATUS FOR DISINFECTING PORTABLE DEVICES
WO2013176729A1 (en) * 2012-05-24 2013-11-28 Amcor Group Gmbh Multi-layer printing process
DE102013013656A1 (de) * 2012-09-05 2014-03-06 Heidelberger Druckmaschinen Ag Verfahren zur Erzeugung von Prägestrukturen in strahlungshärtenden Materialien
CN103786423A (zh) * 2014-01-27 2014-05-14 虎彩印艺股份有限公司 一种圆压圆透明转印辊
DE102015200114B4 (de) * 2015-01-08 2018-12-20 Koenig & Bauer Ag Verfahren zum Wiederbenutzen einer Druckplatte
CN106585085B (zh) * 2016-12-28 2019-12-20 谢宽睿 一种防氧阻聚uv光固机及其uv光固化工艺流程

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GB1195841A (en) * 1966-06-24 1970-06-24 Agfa Gevaert Nv Thermographic Recording Process
BE758057A (fr) * 1969-10-29 1971-04-27 Xerox Corp Impression par propulsion de vapeur
US4140907A (en) * 1976-07-29 1979-02-20 Nippon Telegraph And Telephone Public Corporation Thermal-plain paper recording system
DE3248178C2 (de) * 1982-12-27 1987-02-19 Forschungsgesellschaft Druckmaschinen E.V., 6000 Frankfurt Bildmäßige Beschichtung von Druckformen für den Flachdruck
DE3421029C2 (de) * 1984-06-06 1986-04-24 Walter Steinhausen Mathis Verfahren und Vorrichtung zum trockenen Bedrucken eines Werkstückes unter Verwendung einer Heißprägefolie
EP0205083B1 (en) * 1985-06-03 1993-09-01 Canon Kabushiki Kaisha Image forming method and transfer recording medium therefor
JPS6246661A (ja) * 1985-08-27 1987-02-28 Nec Corp 熱転写プリンタ
JP5129408B1 (ja) 2012-09-09 2013-01-30 和彦 菅原 小動物用のかじり材

Also Published As

Publication number Publication date
US5045697A (en) 1991-09-03
JP2856844B2 (ja) 1999-02-10
DE3917844C1 (enrdf_load_stackoverflow) 1990-10-31
CA2017375C (en) 1995-05-30
EP0400595A3 (de) 1991-06-05
EP0400595A2 (de) 1990-12-05
DE59003578D1 (de) 1994-01-05
JPH0313392A (ja) 1991-01-22
CA2017375A1 (en) 1990-12-01

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