EP0695637A2 - Rouleau de transfert d'encre d'un dispositif d'encrage court pour l'encrage d'une plaque lithographique "non-aqueuse" - Google Patents

Rouleau de transfert d'encre d'un dispositif d'encrage court pour l'encrage d'une plaque lithographique "non-aqueuse" Download PDF

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Publication number
EP0695637A2
EP0695637A2 EP95110527A EP95110527A EP0695637A2 EP 0695637 A2 EP0695637 A2 EP 0695637A2 EP 95110527 A EP95110527 A EP 95110527A EP 95110527 A EP95110527 A EP 95110527A EP 0695637 A2 EP0695637 A2 EP 0695637A2
Authority
EP
European Patent Office
Prior art keywords
ink
transfer roller
ink transfer
release agent
printing
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Withdrawn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
EP95110527A
Other languages
German (de)
English (en)
Other versions
EP0695637A3 (fr
Inventor
Willi Albert Peter Kutzner
Wolfgang Günter Ruckmann
Georg 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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert 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 Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0695637A2 publication Critical patent/EP0695637A2/fr
Publication of EP0695637A3 publication Critical patent/EP0695637A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B41N7/00—Shells for rollers of printing machines
    • B41N7/06—Shells for rollers of printing machines for inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/26—Construction of inking rollers
    • 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
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02—Top layers
    • 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
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/14—Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds

Definitions

  • the invention relates to an ink transfer roller of a short inking unit for inking a "waterless” planographic printing plate according to the preamble of claim 1.
  • a printing plate which is suitable for a waterless planographic printing process is known from a publication "Toray Waterless Plate” from Toray Industries, INC.
  • the disadvantage here is that for printing the "waterless” planographic printing plate, special printing inks which are adapted to the "waterless” planographic printing by means of a release agent are necessary, since conventional printing inks also color the non-printing areas of the "waterless” planographic printing plate.
  • These printing inks mixed with release agents cause ink transfer problems, in particular in short inking units with ink transfer rollers, the surfaces of which are structured, so-called anilox rollers. Separating agent separated from the printing ink is deposited in the depressions of the ink transfer roller and hinders the adhesion of the printing ink in the depressions and thus the filling of the depressions with printing ink.
  • the invention has for its object to provide an ink transfer roller for a short inking unit for inking a "waterless” planographic printing plate.
  • the release agent added to the printing ink, the latter is deposited on the webs and does not hinder the filling of the depressions of the ink transfer roller with printing ink.
  • Separated release agent is also fed to the webs of the ink transfer roller and thus to the chambered doctor blade via an application roller arranged between the printing plate and the ink transfer roller. This achieves cleaning of the inking unit and the printing plate.
  • an offset printing unit 2 is mounted in a known manner, consisting of a rubber cylinder 3, a second rubber cylinder 4, which acts as an impression cylinder and a plate cylinder 6.
  • a paper web 7 is printed between the rubber cylinders 3, 4.
  • a known planographic printing plate 8, prepared for waterless planographic printing, is fastened on the plate cylinder 6.
  • This planographic printing plate 8 has ink-accepting, printing areas 9 and ink-repellent, non-printing areas 11.
  • a short inking unit 12 consisting of a soft application roller 13, an ink transfer roller 14 and a doctor device 16, preferably chambered doctor blade 17, cooperates, which supplies the planographic printing plate 8 with printing ink 18.
  • the printing ink 18 used is a suitable for waterless planographic printing printing ink 18 used with release agent 19, for example silicone oil or resins modified with silicone (FIG. 1).
  • the ink transfer roller 14 consists of a steel core 21, which may have journals.
  • This steel core 21 is provided on the circumference with a coating 22 made of wear-resistant, for example hard ceramic, material which, for. B. is applied by spraying.
  • This coating 22 is structured in which depressions 23, for. B. cups or grooves are engraved. Between these recesses 23 there are webs 24 which can intersect, for example, or can also run approximately parallel. These webs 24 are made of wear-resistant, hard ceramic material and have a high affinity for the release agent 19, for.
  • silicone oil which is why, for example, silicon oxide, aluminum oxide or chromium oxide, which has been impregnated with silicone oil or has been incorporated into the silicone rubber or fluorosilicone rubber, is used as the hard ceramic material.
  • the depressions 23 are lined with a color-friendly, release agent-repellent coating 27, for example a quinonediazide polymer substance or bitumen (FIG. 2).
  • the structured ink transfer roller 14 is provided with the release agent 19 offset printing ink 18 fed.
  • This ink transfer roller 14 transfers the printing ink 18 to the soft application roller 13, which inks the printing areas 9 of the planographic printing plate 8 with printing ink 18, while the release agent portion of the printing ink 18 is passed on to the non-printing areas 11 of the planographic printing plate 8.
  • Separated release agent 19, which has deposited, for example, on the non-printing areas 11 of the planographic printing plate 8 is fed back to the ink transfer roller 14 via the application roller 13.
  • the release agent-friendly webs 24 of the ink transfer roller 14 receive the release agent 19.
  • the depressions 23 with the color-friendly coating 26 remain free of release agent 19 and can receive printing ink 18 without interference.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Plates And Materials Therefor (AREA)
EP95110527A 1994-07-14 1995-07-06 Rouleau de transfert d'encre d'un dispositif d'encrage court pour l'encrage d'une plaque lithographique "non-aqueuse" Withdrawn EP0695637A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944424913 DE4424913C2 (de) 1994-07-14 1994-07-14 Strukturierte Farbübertragungswalze eines Kurzfarbwerkes einer Offsetrotationsdruckmaschine
DE4424913 1994-07-14

Publications (2)

Publication Number Publication Date
EP0695637A2 true EP0695637A2 (fr) 1996-02-07
EP0695637A3 EP0695637A3 (fr) 1997-09-24

Family

ID=6523176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95110527A Withdrawn EP0695637A3 (fr) 1994-07-14 1995-07-06 Rouleau de transfert d'encre d'un dispositif d'encrage court pour l'encrage d'une plaque lithographique "non-aqueuse"

Country Status (3)

Country Link
EP (1) EP0695637A3 (fr)
JP (1) JP2695760B2 (fr)
DE (1) DE4424913C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000002729A3 (fr) * 1998-07-03 2000-05-04 Koenig & Bauer Ag Mecanisme d'encreur court pour machines d'imprimerie rotatives
WO2000032410A1 (fr) * 1998-11-27 2000-06-08 Koenig & Bauer Aktiengesellschaft Rouleau doseur
CN112743980A (zh) * 2019-10-29 2021-05-04 南京造币有限公司 一种印刷设备以及印刷方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19716424B4 (de) * 1997-04-18 2004-08-26 Koenig & Bauer Ag Einrichtung zum Vermeiden des Ablegens von Farbe auf Zylindern von Druckmaschinen
DE19732497B4 (de) * 1997-07-29 2005-08-11 Man Roland Druckmaschinen Ag Kurzfarbwerk in einem Druckwerk einer Rotationsdruckmaschine
KR101152809B1 (ko) * 2009-08-10 2012-06-14 한국기계연구원 2줄 인쇄용 음각홈을 갖는 제판 및 인쇄장치

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3713027A1 (de) * 1987-04-16 1988-11-17 Frankenthal Ag Albert Rasterwalze fuer ein offsetfarbwerk, sowie verfahren zur herstellung einer derartigen rasterwalze

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000002729A3 (fr) * 1998-07-03 2000-05-04 Koenig & Bauer Ag Mecanisme d'encreur court pour machines d'imprimerie rotatives
WO2000032410A1 (fr) * 1998-11-27 2000-06-08 Koenig & Bauer Aktiengesellschaft Rouleau doseur
CN112743980A (zh) * 2019-10-29 2021-05-04 南京造币有限公司 一种印刷设备以及印刷方法

Also Published As

Publication number Publication date
DE4424913A1 (de) 1996-02-08
EP0695637A3 (fr) 1997-09-24
DE4424913C2 (de) 1996-07-11
JPH08169102A (ja) 1996-07-02
JP2695760B2 (ja) 1998-01-14

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