EP0813961B1 - Offsetdruckvorrichtung für Rotationsdruckmaschinen - Google Patents

Offsetdruckvorrichtung für Rotationsdruckmaschinen Download PDF

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Publication number
EP0813961B1
EP0813961B1 EP97106619A EP97106619A EP0813961B1 EP 0813961 B1 EP0813961 B1 EP 0813961B1 EP 97106619 A EP97106619 A EP 97106619A EP 97106619 A EP97106619 A EP 97106619A EP 0813961 B1 EP0813961 B1 EP 0813961B1
Authority
EP
European Patent Office
Prior art keywords
inking
plate cylinder
rollers
peripheral speed
offset 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.)
Expired - Lifetime
Application number
EP97106619A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0813961A1 (de
Inventor
Peter Hummel
Robert Ortner
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 EP0813961A1 publication Critical patent/EP0813961A1/de
Application granted granted Critical
Publication of EP0813961B1 publication Critical patent/EP0813961B1/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
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/04—Cleaning arrangements or devices for inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/20—Wiping devices
    • B41P2235/22—Rollers

Definitions

  • the invention relates to an offset printing device for a Rotary printing machine according to the preamble of claim 1.
  • An offset printing device of this type is known from DE 44 23 286 A1.
  • a The plate cylinder carries one for the dampening agent-free offset printing (Dry flat printing) suitable printing form, which with a corresponding Ink is colored.
  • an additional application roller to the Printing form can be switched on and off.
  • the additional applicator roller is in two operating positions switchable. The applicator roller is on in the first operating position the printing form and with a different peripheral speed The peripheral speed of the plate cylinder can be operated and in the second operating position the application roller is turned off from the printing form, but in the Inking unit integrated.
  • a wet offset printing device is known from DE-AS 18 08 909.
  • To the Removal of contaminants on the printing form is at least one applicator roller of dampening or inking units with different peripheral speeds to the peripheral speed of the plate cylinder by means of a gear train (positively) drivable.
  • This procedure is for a dry offset plate, which has a non-metallic surface coating, unsuitable, because the dry planographic printing plate is opposed to a dampening agent Printing plate for offset printing is less wear resistant.
  • DE-A-2 309 850 is an offset printing machine for one Rotary printing press known, the inking unit on the ink storage side Has ink roller, which with a to the peripheral speed Plate cylinder smaller circumferential speed are positively driven.
  • the invention is intended to avoid torsional vibrations and doubling by due to the special peripheral speeds of the ink storage side Ink friction rollers in the gear train a tension is built up that Avoid backlash, circumferential vibrations and possibly a flank change. Notes on reducing contamination and / or using a dampening agent-free pressure plate are not to be removed.
  • the object of the invention is to develop an offset printing device which the contamination that occurs during offset printing is noticeably reduced.
  • all form-fit ink rollers can be operated in the inking unit with different to the peripheral speed of the plate cylinder Circumferential speed operated, the inking rollers themselves none have positive drive.
  • the positively driven Ink rollers within the inking unit gradually with different ones Circumferential speeds to the plate cylinder circumferential speed driven in rotation.
  • the inking unit a difference in the circumferential speeds of the positive operated ink rollers built up, which, for example, at least one, the inking roller adjacent to the plate cylinder 2% and with one of the plate cylinders most distant, e.g. the ink roller adjacent to the ink lifter in the roller train is 10% of the peripheral speed of the plate cylinder.
  • the positively driven ink rollers rotate with respect to the peripheral speed of the plate cylinder, preferably in total lower peripheral speed. Alternatively, a higher differential speed is also possible permissible for the peripheral speed of the plate cylinder.
  • a rotational slip forms at each roller contact point of the inking unit.
  • the rotation slip is formed in particular on the inking rollers by two contact points, the first to the plate cylinder and the second to the adjacent, form-fittingly operated inking unit roller.
  • the rotational slip forms the Wiping effect "which reduces the contamination (paper dust, slugs, etc.) that occurs in the inking unit. In the process, the contamination in the contact points is destroyed or noticeably reduced, so that there are no negative effects on the print quality.
  • One known from the prior art This eliminates the need for dirt trap rollers.
  • the intervals between the washing cycles for inking unit washing can be increased, which also saves detergent and water.
  • the plastic-coated inking unit rollers, which experience has shown are susceptible to build-up, do not need to be substituted.
  • a printing unit comprises a blanket cylinder 1 and a plate cylinder 2, which is a dry planographic printing plate for the waterless Offset printing.
  • the plate cylinder 2 are four inking rollers 4.1 to 4.4 Assigned on and off assignable.
  • the inking rollers 4.1 to 4.4 are part of it an inking unit 5 formed by a plurality of inking rollers, which the Dry flat printing plate with a suitable for waterless offset printing Ink colors. This is done in a known manner from a paint box a jack roller and a roller train of the inking unit 5 the printing ink on the Transfer the dry flat printing plate.
  • the ink roller 3.4 can with 2% (analog to the ink roller 3.2) be positively driven.
  • the inking rollers 3.1-3.4 have a traversing drive on.
  • the transfer rollers adjacent to the inking rollers 3.1 - 3.4 (without Item number) and the inking rollers 4.1 - 4.4 are changeable.
  • the mode of operation is as follows: In printing operation, the inking rollers 3.1 - 3.4 constantly with a deviating to the peripheral speed of the plate cylinder Peripheral speed driven.
  • the difference in peripheral speeds is in the present example a maximum of 6% and a minimum of 2% to the Circumferential speed of the plate cylinder 2.
  • the circumferential speeds the inking rollers 3.1 - 3.4 are always less than the peripheral speed of the Plate cylinder 2.
  • the rotation and traversing movement of the inking rollers 3.1 - 3.4 is frictionally engaged on the adjacent rollers of the inking unit 5 transfer. In the contact points, in particular between plate cylinder 2 and the inking rollers 4.1 to 4.4. become the impurities (Dirt particles, dust, paper and paint particles) reduced.
  • the printing unit according to the invention comprises a blanket cylinder 1, a plate cylinder 2, which is a printing plate for wet offset printing carries and an inking unit 5.
  • the plate cylinder 2 is still a Dampening unit 6 assigned, which has a dampening roller 7 that can be turned on and off having.
  • the dampening roller 7 is in a known manner with a dampener, which is immersed in a dampening solution tank.
  • the damp doctor is assigned a metering roller.
  • the dampening roller 7 is a bridge roller arranged switchable adjacent to the first inking roller 4.1. If necessary A further rider roller can be assigned to the dampening roller 7.
  • the Inking unit 5 has form-fit drivable inking rollers 3.1 - 3.4, which are next to the rotary drive have a traversing drive.
  • the ink rollers 3.1 - 3.4 neighboring transfer or inking rollers 4.1 - 4.4 are frictional in contact with the inking rollers 3.1 - 3.4.
  • the inking roller 3.3 as from Plate cylinder most distant form-fit drivable roller with the largest Difference in the peripheral speed to the plate cylinder peripheral speed operated.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Testing Of Balance (AREA)
EP97106619A 1996-06-22 1997-04-22 Offsetdruckvorrichtung für Rotationsdruckmaschinen Expired - Lifetime EP0813961B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19625029 1996-06-22
DE19625029A DE19625029A1 (de) 1996-06-22 1996-06-22 Offsetdruckvorrichtung für Rotationsdruckmaschinen

Publications (2)

Publication Number Publication Date
EP0813961A1 EP0813961A1 (de) 1997-12-29
EP0813961B1 true EP0813961B1 (de) 1999-06-30

Family

ID=7797722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106619A Expired - Lifetime EP0813961B1 (de) 1996-06-22 1997-04-22 Offsetdruckvorrichtung für Rotationsdruckmaschinen

Country Status (5)

Country Link
US (1) US5823109A (ja)
EP (1) EP0813961B1 (ja)
JP (1) JPH1067096A (ja)
AT (1) ATE181701T1 (ja)
DE (2) DE19625029A1 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10000903A1 (de) 1999-02-05 2000-08-10 Heidelberger Druckmasch Ag Verfahren zum Betrieb einer Druckmaschine und Druckmaschine zur Durchführung des Verfahrens
DE10008488A1 (de) * 1999-03-17 2000-09-21 Heidelberger Druckmasch Ag Feuchtwerk einer Flachdruckmaschine
EP1147889A3 (en) * 2000-04-14 2006-01-18 Komori Corporation Roller structure in printing press
US6539859B2 (en) 2000-10-17 2003-04-01 Presstek, Inc. Multicolor printing press
JP4199458B2 (ja) * 2001-01-19 2008-12-17 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト インキ装置
JP4276010B2 (ja) * 2003-07-24 2009-06-10 株式会社小森コーポレーション 印刷機における駆動装置
US7380498B2 (en) * 2006-08-30 2008-06-03 Julius Domotor Offset lithography system
ES2415804T3 (es) * 2010-03-23 2013-07-29 Cognis Ip Management Gmbh Composición para lavar platos manualmente, suave con la piel
US8850976B2 (en) * 2012-01-11 2014-10-07 James M. Jeter Inker assembly for cylindrical can decorators
DE102014222388A1 (de) 2013-11-04 2015-05-07 Koenig & Bauer Aktiengesellschaft Verfahren und Vorrichtung zum Einfärben einer auf einem Plattenzylinder einer Druckmaschine angeordneten Druckplatte

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3467008A (en) * 1967-01-31 1969-09-16 Julius A Domotor Means and method for removing foreign particles from lithographic press
DE1808909C3 (de) * 1968-11-14 1978-03-02 Julius A. San Francisco Calif. Domotor (V.St.A.) Verfahren zum Reinigen des Plattenzylinders einer Offsetrotations-Druckmaschine und diesbezügliche Vorrichtung
DE2309850C3 (de) * 1973-02-28 1978-06-22 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Rotationsdruckmaschine mit mehreren in Reihe angeordneten Druckwerken mit Bremseinrichtung
DE2658362C3 (de) * 1976-12-23 1984-08-09 Hinterkopf, Kurt G., Dipl.-Ing. (FH), 7332 Eislingen Farbwerk für eine Druckmaschine, insbesondere zum Bedrucken von Tuben, Hülsen u.dgl.
DE2659557A1 (de) * 1976-12-30 1978-07-06 Maschf Augsburg Nuernberg Ag Rotations-offsetdruckwerk
DE3034644C2 (de) * 1980-09-13 1982-10-07 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbwerk mit changierenden Farbauftragswalzen
DE3239114A1 (de) * 1981-10-22 1983-08-25 Dahlgren Mfg. Co., 75235 Dallas, Tex. Druckmaschine
US5265527A (en) * 1991-06-14 1993-11-30 Harris Graphics Corporation Offset printing press with emulsification control
US5345865A (en) * 1993-04-07 1994-09-13 Dahlgren Usa, Inc. Hickey removal system
DE4423286C2 (de) * 1994-07-02 1998-06-04 Heidelberger Druckmasch Ag Druckwerk für eine Rotationsoffsetdruckmaschine

Also Published As

Publication number Publication date
EP0813961A1 (de) 1997-12-29
DE59700237D1 (de) 1999-08-05
US5823109A (en) 1998-10-20
ATE181701T1 (de) 1999-07-15
DE19625029A1 (de) 1998-01-08
JPH1067096A (ja) 1998-03-10

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