EP1151857A2 - Formation et effacement d'un image d'une façon contrôlée sur une forme d'impression en titane métallique - Google Patents

Formation et effacement d'un image d'une façon contrôlée sur une forme d'impression en titane métallique Download PDF

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Publication number
EP1151857A2
EP1151857A2 EP01109311A EP01109311A EP1151857A2 EP 1151857 A2 EP1151857 A2 EP 1151857A2 EP 01109311 A EP01109311 A EP 01109311A EP 01109311 A EP01109311 A EP 01109311A EP 1151857 A2 EP1151857 A2 EP 1151857A2
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EP
European Patent Office
Prior art keywords
printing
printing form
point
image
titanium
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.)
Granted
Application number
EP01109311A
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German (de)
English (en)
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EP1151857B1 (fr
EP1151857A3 (fr
Inventor
Bernd Vosseler
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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Publication date
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Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1151857A2 publication Critical patent/EP1151857A2/fr
Publication of EP1151857A3 publication Critical patent/EP1151857A3/fr
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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
    • B41C1/1041—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by modification of the lithographic properties without removal or addition of material, e.g. by the mere generation of a lithographic pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/006—Cleaning, washing, rinsing or reclaiming of printing formes other than intaglio formes

Definitions

  • the present invention relates to a reusable printing form, in particular for Use in offset printing, with a printing surface and a method for imaging a reusable printing form with a printing area.
  • Lithographic printing is based on the use of the immiscibility of oil and Water on the printing form, whereby the lipophilic solution or the ink or color through the image-forming areas and the water or the hydrophilic solution through the non-image-forming areas of the printing surface are held. If the in suitably prepared printing area with hydrophilic and lipophilic substance or Solution, especially water and ink or paint, is wetted, so keep non-image areas preferably the hydrophilic substance or solution back and repel the lipophilic substances, while the pictorial areas repel the lipophilic solution or accept ink or paint and repel the hydrophilic substances. As a result then the lipophilic substance in a suitable manner on the surface of a material transferred, on which the image is to be fixed, for example paper, fabric, polymers and the same.
  • Aluminum has been used as a substrate for printing plates for many years. Usually the aluminum is first a grain process and then a Subsequent anodizing processes.
  • the anodizing serves to to provide anodic oxide layer, the adhesion of which is improved by the grain.
  • the grain size increases the hydrophilic properties of the background Pressure plate reinforced.
  • a strong acid is usually such as sulfuric or phosphoric acid, then used by another Processes, such as in a thermal siliconization process or the so-called electrosiliconization to make the surface hydrophilic.
  • the aluminum carrier can be characterized in that it has a porous, tear-resistant hydrophilic surface, especially the lithographic Pressure is adjusted, especially in the case of long print runs.
  • the arrangement described above is subjected to imagewise exposure by selective energy is supplied. This can be done for example by means of exposure a mask with UV light or by writing directly with a laser.
  • lithographic printing plates of the type described above are usually used treated with a developer solution, which is typically an aqueous alkaline solution with organic additives.
  • a developer solution typically an aqueous alkaline solution with organic additives.
  • oxide ceramics which for example in the form of coatings on a printing plate, use Find.
  • EP 0 911 154 A1 proposes TiO 2 and ZnO 2 as the material for the plate surface, which can be present in ceramic form both in pure form and with other metallic additives in various mixing ratios.
  • This surface is non-excited hydrophobic and can be brought into a hydrophilic state by irradiation with ultraviolet light. This switching process can be reversed by heating.
  • the imaging is now done by illuminating the entire surface of the plate with ultraviolet light and areas which are supposed to lead to color during printing are covered by a mask or a film. The image areas are then thermally deleted, e.g. B. switched back with a laser beam.
  • No. 5,743,188 proposes the use of zirconate (ZrO 2 ) in a ceramic-pure form or in a form provided with other additives as an active material in the surface.
  • the surface is exposed point by point to laser radiation, ie melted, and is thereby converted from a hydrophilic, stoichiometric to a lipophilic, sub-stoichiometric state. This transformation into the substoichiometric state takes place by ablation (removal) of small amounts of the surface of the ceramic.
  • the printing form can be erased by thermally oxidizing the surface.
  • oxide ceramics are much harder and more brittle than metals, it happens Tensions in and between the layers leading to detachment from the substrate, be it a Metal background or a film, in particular made of a polymer, leads. In particular bending the substrate can cause cracks and flaking.
  • CtP systems computer-to-plate systems
  • the object of the present invention is to provide a material for the printing form surface to propose that has better surface and processing properties so that multiple prints of different images on the same printing surface is suitable. At the same time, the costs are reduced.
  • a printing form with a titanium-containing surface is used as the printing surface suggested.
  • a metallic surface is created under a titanium-containing surface understood, which consists entirely of metallic titanium or a titanium-containing alloy.
  • the titanium part of the alloy is typically in the range between 50 and 100%, preferably between 95 and 100%.
  • this surface can be the untreated
  • the surface of a sheet can either be made of titanium or a titanium-containing alloy.
  • this surface can be formed as a thin layer, which is on a Carrier, such as a sheet, a plastic or a film, with a suitable Process, in particular by electroplating, has been deposited.
  • a Carrier such as a sheet, a plastic or a film
  • a suitable Process in particular by electroplating, has been deposited.
  • the titanium-containing surface in the form of a coating on a plate or a printing cylinder.
  • the titanium-containing surface changes like a controlled energy supply for example, by irradiation with electromagnetic energy, their Surface energy and can change from a hydrophobic to a hydrophilic state be switched.
  • the polar and dispersive parts of the surface energy in the exposed or unexposed state differ significantly from each other, so that the wetting differences can be used for offset printing.
  • the metallic titanium surface according to the invention can therefore be one controlled processes for imaging and erasing. Stand by two symmetrical methods to choose from: selective pointwise Hydrophilize with large-area hydrophilization and selective point by point Hydrophobizing with large-area hydrophilizing.
  • a suitable laser or a light emitting diode is used, which is in the ultraviolet Spectral range emitted, typically with a wavelength less than 420 nm
  • a suitable laser or a light emitting diode is used, which is in the ultraviolet Spectral range emitted, typically with a wavelength less than 420 nm
  • Returning the surface to its original state can be done using heat and / or water or aqueous solution with various additives, in particular Alcohols, preferably isopopanol, are treated. You can then use Hot air can be dried.
  • hydrophilizing at certain points an image can thus be seen of the surface can be provided, which is achieved by hydrophobizing over a large area can be deleted.
  • hydrophilization is carried out over a large area.
  • This will be a suitable light source, typically a UV lamp, is used.
  • point-by-point hydrophobization is a light source in the infrared spectral range, preferably a laser.
  • an image can be created of the surface can be provided by point-by-point hydrophobization, which is carried out by large-scale hydrophilization can be deleted.
  • the method according to the invention for imaging and erasure can both within as well as outside of the printing unit or the printing press.
  • a an essential requirement is imagewise exposure to radiation, for example using ultraviolet light, which is effective the hydrophobic Titanium layer or titanium-containing alloy layer converted into a hydrophilic state.
  • the printing surface according to the invention can be imaged by exposure process a transparent template.
  • the printing area can also be done with digital Information can be directly exposed, for example by means of a laser beam.
  • the one with A suitable control system can use lasers to write the background be used. Lasers in the ultraviolet spectral range are preferred emit.
  • the printing surface of the printing device becomes ink or color cleaned in a suitable manner.
  • the image can be deleted so that the Print area can be reused.
  • the imaging and erasure can be carried out several times because the printing surface is extremely durable and long-lasting is.
  • the printing form is produced using a Aluminum sheet, as used as the base material for conventional printing plates, deposited a metallic titanium layer, for example by electrochemical Method.
  • the coated sheet is then one on the plate cylinder Direct imaging printing machine can be spanned.
  • the First wet the plate with clean water, for example with the help of an additional one Dampening systems and dried with hot air, so that they are brought into the hydrophobic state becomes.
  • the imaging is now carried out with a suitable laser head of direct imaging Printing machine that emits ultraviolet radiation.
  • the needed here Intensities are significantly lower than with thermal imaging because of the material is not heated, but only - comparable to a film - has to be exposed.
  • the use of a metallic titanium-containing surface results in a number of benefits.
  • the metallic titanium coating of a sheet for the Printing form is less sensitive to bending than a printing form with one ceramic surface.
  • the production of metallic layers is much easier than the ceramic, because on processes such.
  • B. galvanization that can be used over a large area.
  • the surface roughness can Surface quality of the carrier plate and / or the plastic carrier set in order to create optimal conditions for offset printing. Since when switching from hydrophobic to the hydrophilic state and back no material from the printing plate is removed, the plate can be erased and written to multiple times. Because the titanium surface itself is no longer hydrophilic or hydrophobic as a base material absolutely used the relatively expensive anodized aluminum described above , but it can also be used, for example, a cheap tinplate.
  • one according to the invention Printing device on a fixed or monolithic printing cylinder, some of which or made entirely of metallic titanium.
  • a printing form which for Part consists of metallic titanium
  • at least the outer pressure surface has such Composition on.
  • a representative example of such a pressure cylinder is shown in Fig. 1 shown.
  • a fixed pressure cylinder 10 consists entirely of metallic titanium and has an outer pressure surface 12 made of metallic titanium.
  • the cylinder 20 has one Core 22, in particular made of metal, made of an alloy or a ceramic on which the Metallic titanium surface applied as a layer or coating 24 or suitably deposited, with an outer pressure surface 26 provided.
  • the layer comprising metallic titanium or Wrapping 24 may also be a hollow cylindrical sleeve or pressure jacket, as in Fig. 3 is shown.
  • the sleeve 30 has a surface 32 made of a metallic Titanium layer exists. The thickness of such sleeves varies within a wide range. in the practical use has proven itself several centimeters.
  • the cores of such Printing forms generally consist of one or more metals, such as for example ferrous metals, nickel, brass, copper or magnesium or alloys of it, or of non-metallic materials. Steel cores are preferred.
  • the metal or Alloy cores, whether or not ceramic, can be hollow or completely solid, or they consist of one or more types of metal or alloys or not metallic inorganic or organic materials.
  • the ones described above Cores or supports applied with a titanium-containing layer generally have one uniform thickness of several micrometers.
  • Fig. 4 shows a printing plate according to the invention in an isometric partial view.
  • the suitable carrier material 40 which is made of metal or a metal-containing alloy or Ceramic consists of a layer that has a metallic titanium layer 42.
  • the Area 44 is used for printing.
  • Such a plate can be placed on a suitable one Printing unit or a suitable printing press also curved, usually carried by rollers.
  • the method for imaging according to the invention is simplified and schematic and delete the printing form according to the invention.
  • the cylinder 50 carries one Layer or a sleeve or sheath 52 which has the titanium-containing surface 54 that can be used for printing.
  • the surface will vary depending desired process step selectively point by point energy from the light source 56 the outgoing beam 58 or large area from the energy source 512 through the Radiation sector 514 supplied.
  • this is a light source 56, which in UV range emitted, and an energy source 512, in particular a heater for Heat supply.
  • an IR laser is used for the light source 56 and A UV lamp is provided for energy source 512.
  • the water or the aqueous solution 510 support the process of hydrophobizing.
  • Such a device can be inside or outside a printing unit or a Printing machine in this scheme corresponding topology or with additional Elements such as application rollers, optics and the like can be realized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Printing Methods (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
EP01109311A 2000-05-03 2001-04-12 Formation et effacement d'un image d'une façon contrôlée sur une forme d'impression en titane métallique Expired - Lifetime EP1151857B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10021451 2000-05-03
DE10021451A DE10021451A1 (de) 2000-05-03 2000-05-03 Gesteuerte Bebilderung und Löschung einer Druckform aus metallischem Titan

Publications (3)

Publication Number Publication Date
EP1151857A2 true EP1151857A2 (fr) 2001-11-07
EP1151857A3 EP1151857A3 (fr) 2001-11-14
EP1151857B1 EP1151857B1 (fr) 2006-06-28

Family

ID=7640591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01109311A Expired - Lifetime EP1151857B1 (fr) 2000-05-03 2001-04-12 Formation et effacement d'un image d'une façon contrôlée sur une forme d'impression en titane métallique

Country Status (5)

Country Link
US (1) US6520088B2 (fr)
EP (1) EP1151857B1 (fr)
JP (1) JP2001353974A (fr)
AT (1) ATE331617T1 (fr)
DE (2) DE10021451A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1277577A1 (fr) * 2001-07-17 2003-01-22 Mitsubishi Heavy Industries, Ltd. Appareil d'impression
US6916743B2 (en) 2001-07-19 2005-07-12 Sanyo Electric Co., Ltd. Semiconductor device and method for manufacturing thereof
WO2006066851A1 (fr) * 2004-12-22 2006-06-29 Hille & Mueller Gmbh Planche d'impression offset reutilisable et procede de production de celle-ci

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000155422A (ja) * 1998-11-20 2000-06-06 Fuji Photo Film Co Ltd 平版印刷用原板及び平版印刷方法
DE10115435B8 (de) * 2001-03-29 2007-02-08 Maschinenfabrik Wifag Verfahren zur Erzeugung eines Druckbilds und/oder zur Löschung eines Druckbilds einer Nassoffset-Druckform mit fotothermisch veränderbarem Material
US20020189478A1 (en) * 2001-06-14 2002-12-19 Mitsubishi Heavy Industries, Ltd. Offset press
EP1266754A1 (fr) * 2001-06-14 2002-12-18 Mitsubishi Heavy Industries, Ltd. Machine d'impression offset et plaque d'impression sans fente
DE10227054B4 (de) * 2002-06-17 2013-01-03 Heidelberger Druckmaschinen Ag Wiederverwendbare Druckform, Druckwerk und Druckmaschine damit sowie Verfahren zur Bebilderung der Druckform
US6851366B2 (en) 2002-06-17 2005-02-08 Heidelberger Druckmaschinen Ag Reusable printing form
US7299749B2 (en) * 2003-02-10 2007-11-27 Fujifilm Corporation Lithographic printing plate support and production method thereof
DE102006019801B4 (de) * 2006-04-28 2012-01-19 Koenig & Bauer Aktiengesellschaft Zylinder einer Rotationsdruckmaschine
DE102008022860A1 (de) 2008-05-08 2009-12-10 Böhmer, Peter Arthur, Dipl.-Ing. (FH) Wiederverwendbare Offset-Druckplatte
US20100101441A1 (en) * 2008-10-24 2010-04-29 Printing Research, Inc. Offset Printing Transfer Cylinder Base Cover with Alignment Stripes for Precision Installation of a Flexible Jacket Cover also with Alignment Stripes
US8281716B2 (en) * 2008-12-24 2012-10-09 Printing Research, Inc. Anti-marking jackets comprised of fluoropolymer and methods of using in offset printing
US8578853B2 (en) * 2008-12-24 2013-11-12 Printing Research, Inc. Anti-marking jackets comprised of attachment structure and methods of using in offset printing
US8220388B2 (en) * 2008-12-24 2012-07-17 Printing Research, Inc. Multiple layer anti-marking jackets and methods of using in offset printing
US8424453B2 (en) 2010-09-01 2013-04-23 Printing Research, Inc. Apparatus and method for adjusting anti-marking jackets
US8677899B2 (en) 2011-01-31 2014-03-25 Printing Research, Inc. Reversible anti-marking jackets and methods of using
US9346258B2 (en) 2012-05-02 2016-05-24 Printing Research, Inc. Method for cleaning anti-marking jackets

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU984878A1 (ru) * 1980-08-11 1982-12-30 за вители Ф. - ,. / с; Способ изготовлени печатной формы
EP0911155A1 (fr) * 1997-10-24 1999-04-28 Fuji Photo Film Co., Ltd. Appareil pour la fabrication d'une plaque d'impression et imprimante et système d'impression utilisant cet appareil
US5931097A (en) * 1995-05-08 1999-08-03 Flex Products, Inc. Laser imageable lithographic printing member

Family Cites Families (8)

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US4718340A (en) * 1982-08-09 1988-01-12 Milliken Research Corporation Printing method
DE3938449A1 (de) * 1989-11-18 1991-05-23 Roland Man Druckmasch Druckwerk
US5743188A (en) 1995-10-20 1998-04-28 Eastman Kodak Company Method of imaging a zirconia ceramic surface to produce a lithographic printing plate
US5870955A (en) * 1997-03-05 1999-02-16 Presstek, Inc. Lithographic printing system with reusable support surfaces and lithographic constructions for use therewith
JPH11143055A (ja) * 1997-11-14 1999-05-28 Fuji Photo Film Co Ltd 平版印刷版の作成方法及び平版印刷用原版
US5927206A (en) * 1997-12-22 1999-07-27 Eastman Kodak Company Ferroelectric imaging member and methods of use
US5925496A (en) * 1998-01-07 1999-07-20 Eastman Kodak Company Anodized zirconium metal lithographic printing member and methods of use
JP2000155422A (ja) * 1998-11-20 2000-06-06 Fuji Photo Film Co Ltd 平版印刷用原板及び平版印刷方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU984878A1 (ru) * 1980-08-11 1982-12-30 за вители Ф. - ,. / с; Способ изготовлени печатной формы
US5931097A (en) * 1995-05-08 1999-08-03 Flex Products, Inc. Laser imageable lithographic printing member
EP0911155A1 (fr) * 1997-10-24 1999-04-28 Fuji Photo Film Co., Ltd. Appareil pour la fabrication d'une plaque d'impression et imprimante et système d'impression utilisant cet appareil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1277577A1 (fr) * 2001-07-17 2003-01-22 Mitsubishi Heavy Industries, Ltd. Appareil d'impression
US6916743B2 (en) 2001-07-19 2005-07-12 Sanyo Electric Co., Ltd. Semiconductor device and method for manufacturing thereof
WO2006066851A1 (fr) * 2004-12-22 2006-06-29 Hille & Mueller Gmbh Planche d'impression offset reutilisable et procede de production de celle-ci

Also Published As

Publication number Publication date
US6520088B2 (en) 2003-02-18
EP1151857B1 (fr) 2006-06-28
JP2001353974A (ja) 2001-12-25
EP1151857A3 (fr) 2001-11-14
US20010042469A1 (en) 2001-11-22
DE50110307D1 (de) 2006-08-10
DE10021451A1 (de) 2001-11-08
ATE331617T1 (de) 2006-07-15

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