EP0668159A1 - Dispositif d'impression offset - Google Patents

Dispositif d'impression offset Download PDF

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Publication number
EP0668159A1
EP0668159A1 EP95100529A EP95100529A EP0668159A1 EP 0668159 A1 EP0668159 A1 EP 0668159A1 EP 95100529 A EP95100529 A EP 95100529A EP 95100529 A EP95100529 A EP 95100529A EP 0668159 A1 EP0668159 A1 EP 0668159A1
Authority
EP
European Patent Office
Prior art keywords
roller
dampening
offset printing
printing device
inking
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
EP95100529A
Other languages
German (de)
English (en)
Other versions
EP0668159B1 (fr
Inventor
Peter Hummel
Robert Ortner
Marc Hinz
Hubertus Conrad-Reclam
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6510432&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0668159(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0668159A1 publication Critical patent/EP0668159A1/fr
Application granted granted Critical
Publication of EP0668159B1 publication Critical patent/EP0668159B1/fr
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
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/36—Inking-rollers serving also to apply ink repellants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing

Definitions

  • the invention relates to an offset printing device with a plate cylinder which interacts with application rollers of a dampening unit and an inking unit.
  • An offset printing device of this type is known from DE 3 432 807 C2.
  • This device is intended to improve the ink application, reduce the scratch and wear effects on the printing form and remove slugs (dust formation / formation of misprinting points) and represents a conventional offset printing device driven and is coupled to the first inking roller in the direction of rotation of the plate cylinder via a bridge roller which is ink-accepting and is driven to the dampening roller at the same peripheral speed.
  • the object of the invention is to develop a solution which eliminates the disadvantages mentioned above and is therefore universally suitable for conventional as well as waterless offset printing.
  • a conventional offset printing device formed by a dampening unit, an inking unit and a plate cylinder carrying the printing form can optionally also be converted for waterless offset printing (dry flat printing).
  • the first inking roller in the direction of rotation of the plate cylinder is coupled with the adjacent dampening roller.
  • the coupling can take place through a direct or indirect integration of the dampening roller, this also applies to several dampening rollers in contact with the plate cylinder, in the inking unit.
  • Another arrangement results from the indirect integration of the dampening roller in the inking unit.
  • the first inking roller is in contact with an inking device to which a bridge roller is assigned, which in turn is in contact with the dampening roller.
  • a second separation point is arranged between the first inking roller and dampening roller.
  • the dampening roller is integrated indirectly into the inking unit via the rotating plate cylinder.
  • the bridge roller can either be used as a dirt roller to remove slugs or the dampening roller itself eliminates it by means of different peripheral speeds to the plate cylinder.
  • the dampening application rollers are integrated into additional ink application rollers which are driven at the same or different peripheral speeds to the peripheral speed of the plate cylinder. If at least one dampening roller is operated with a differential speed to the peripheral speed in waterless offset printing, there is a wiping effect, which increases the slugs from the printing form, for example, when the printing material and the printing plate / printing ink combination are unfavorable, e.g. a Toray plate.
  • This universal design means that additional devices for removing slugs, e.g. Partisan catchers, dropped.
  • a blanket cylinder 1 with a plate cylinder 2 is shown in contact with a printing unit.
  • a dampening unit 13 and an inking unit 3 are assigned to the plate cylinder 2.
  • the dampening unit 13 has a dampening roller 17 immersed in a dampening solution tank 16, a metering roller 15 in contact with the dampening roller 17 and a dampening roller 14 resting on the plate cylinder 2 and on the dampening roller 17.
  • the inking unit 3 has four inking rollers 4, 7, 9, 11 resting on the plate cylinder 2, the fourth and third inking rollers 11, 9 with an ink fountain pen 10, the third and second inking rollers 9, 7 with an intermediate roller 8 and the second and first inking rollers 7, 4 are in contact with a color grater 6. Between the first inking roller 4 and the adjacent dampening roller 14, a bridge roller 5 is arranged, which can optionally be followed by a tandem roller 12.
  • the dampening solution is fed from the dampening roller 17 to the dampening roller 14 using a metering roller 15.
  • the dampening roller 14 transfers the dampening solution to the printing plate arranged on the plate cylinder 2.
  • the required amount of ink is transferred from the roller train of the inking unit 3, which is not described further, via the inking rollers 4, 7, 9, 11 to the printing form of the plate cylinder 2.
  • the plate cylinder 2 carries a printing form, e.g. a Toray plate. All inking rollers 4, 7, 9, 11 and the other rollers of the inking unit 3, not shown, remain in their position.
  • the dampening applicator roller 14 remains in the same position, but is decoupled at a separation point 18 from the remaining roller train 15, 17 of the dampening unit 13. The decoupling at the separation point 18 takes place in the present example by lowering the dampening duct 17 into the dampening solution container 16.
  • the separation point 18 is to be arranged after the dampening roller 14 adjacent to the inking unit 3 or another dampening roller such that no dampening solution is supplied to the dampening rollers 14.
  • the dampening roller 14 is integrated directly into the roller train of the inking unit 3 via the bridge roller 5.
  • the bridge roller 5 can also be substituted by a friction roller.
  • the driven dampening roller 14 is designed in terms of gear technology in such a way that it is optionally operated synchronously with the peripheral speed of the plate cylinder 2 or with a different peripheral speed to the peripheral speed of the plate cylinder 2.
  • the wiping effect on the printing form of the plate cylinder 2 results as a positive effect, which gently removes the slugs from the sensitive printing form, which are particularly undesirable in waterless offset printing.
  • FIG. 3 shows a converted device for waterless offset printing.
  • the dampening roller 14 is decoupled to a first separation point 18, as already described, from the rollers leading upstream, the dampening roller 17 and the metering roller 15.
  • the dampening roller 14 is in contact with an associated bridge roller 5.
  • the first inking roller 4 is in contact with an associated inking device 20.
  • Inking device 20 and dampening roller 14 are additionally decoupled at a second separating point 19 located between them.
  • the ink fountain pen 20 can be in direct contact with the dampening roller 14 while maintaining the first separation point 18.
  • the bridge roller 5 only bears against the dampening roller 14.
  • the dampening roller 14 is in contact with the inking unit 3 via the plate cylinder 2.
  • the dampening roller 14 is indirectly integrated into the inking unit 3.
  • the dampening roller 14 is coupled to a bridge roller 5, which is driven with friction.
  • the bridge roller 5 only bears against the dampening roller 14.
  • the dampening roller 14 can be driven at a differential speed to the peripheral speed of the plate cylinder 2.
  • the bridge roller 5 also acts as a dirt roller. After removing these contaminants, the dampening roller 14 is driven at the same peripheral speed as the plate cylinder peripheral speed.
  • the first separation point 18 must remain for waterless offset printing.
  • the first inking roller 4 is in contact with an inking device 20, which is in contact with the dampening roller 14 in contact with the plate cylinder 2 via two bridge rollers 21, 5.
  • the dampening roller 17 is in contact with the dampening roller 14 and the dampening roller 14 is coupled to the first inking roller 4 via the adjacent bridge roller 5, 21 and the ink fountain pen 20.
  • the dampening roller 14 is decoupled from the dampening roller 17 at the first separation point 18 if the dampening roller 14 is to be integrated directly into the inking unit 3 via bridge rollers 5, 21 and inking device 20. With indirect integration of the dampening roller 14 into the inking unit 3, a second separation point 19 is introduced between the bridge rollers 5, 21 in addition to the first separation point 18. The mode of operation is then analogous to FIG. 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Soil Working Implements (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Details Of Aerials (AREA)
EP95100529A 1994-02-17 1995-01-17 Dispositif d'impression offset Expired - Lifetime EP0668159B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4404989A DE4404989C2 (de) 1994-02-17 1994-02-17 Offsetdruckvorrichtung
DE4404989 1994-02-17

Publications (2)

Publication Number Publication Date
EP0668159A1 true EP0668159A1 (fr) 1995-08-23
EP0668159B1 EP0668159B1 (fr) 1998-03-18

Family

ID=6510432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100529A Expired - Lifetime EP0668159B1 (fr) 1994-02-17 1995-01-17 Dispositif d'impression offset

Country Status (4)

Country Link
EP (1) EP0668159B1 (fr)
JP (1) JP2857076B2 (fr)
AT (1) ATE164116T1 (fr)
DE (2) DE4404989C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0895858A1 (fr) * 1997-08-07 1999-02-10 Kba-Planeta Ag Tour d'impression d'une machine à imprimer
EP0761432B1 (fr) * 1995-08-09 1999-12-08 MAN Roland Druckmaschinen AG Dispositif de mouillage pour une machine à imprimer en offset

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19529204C2 (de) * 1995-08-09 1997-08-14 Roland Man Druckmasch Feuchtwerk für eine Offsetdruckmaschine
DE19822442A1 (de) 1997-08-04 1999-02-11 Heidelberger Druckmasch Ag Offsetdruckmaschine
DE10000903A1 (de) 1999-02-05 2000-08-10 Heidelberger Druckmasch Ag Verfahren zum Betrieb einer Druckmaschine und Druckmaschine zur Durchführung des Verfahrens
DE10020227B4 (de) * 2000-04-26 2004-07-15 Man Roland Druckmaschinen Ag Offsetdruckwerk für eine Druckmaschine
JP4824192B2 (ja) * 2000-05-17 2011-11-30 株式会社小森コーポレーション 印刷機のインキ除去方法
DE10046374B4 (de) * 2000-09-20 2014-05-15 Koenig & Bauer Aktiengesellschaft Verfahren zum Betreiben einer Druckeinheit
JP4672428B2 (ja) * 2005-04-28 2011-04-20 リョービ株式会社 渡しローラの着脱装置
JP2007130766A (ja) * 2005-11-08 2007-05-31 Ryobi Ltd 版の異物除去方法
DE102006030290B3 (de) * 2006-03-03 2007-10-18 Koenig & Bauer Aktiengesellschaft Druckwerk
CN108528042A (zh) * 2018-04-11 2018-09-14 浙江创新彩印有限公司 一种全自动胶印机及胶印方法
DE102024106147A1 (de) * 2024-03-04 2025-09-04 Koenig & Bauer Ag Druckwerk und Verfahren zur Positionierung von Bestandteilen eines Druckwerks

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3959806A (en) * 1972-10-03 1976-05-25 The Beacon Herald Of Stratford, Limited Water supply apparatus for printing machines
DE2932105A1 (de) * 1979-08-08 1981-02-12 Roland Man Druckmasch Farbwerk fuer eine offsetrotationsdruckmaschine
US4729308A (en) * 1986-08-04 1988-03-08 Am International, Inc. Convertible moisture/ink system in printing or duplicating machines

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2709151A1 (de) * 1977-03-03 1978-09-07 Maschf Augsburg Nuernberg Ag Rotations-flachdruckwerk
SE8000942L (sv) * 1979-02-16 1980-08-17 Dahlgren Mfg Co Valsmanovreringsmekanism
DE3308067C1 (de) * 1983-03-08 1984-09-13 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Fluessigkeitszufuehrvorrichtung fuer Farbe und Feuchtfluessigkeit einer Rotationsflachdruckmaschine
GB2151186B (en) * 1983-12-12 1987-09-09 Baldwin Technology Corp Dampening system
IT1214887B (it) * 1985-12-04 1990-01-18 Ghisalberti Luigi Unita' stampante reversibile per macchine off-set conglobante dispositivi per la bagnatura e verniciatura.
JPH088103Y2 (ja) * 1987-06-30 1996-03-06 株式会社篠原鉄工所 オフセット印刷機の共用化通水装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3959806A (en) * 1972-10-03 1976-05-25 The Beacon Herald Of Stratford, Limited Water supply apparatus for printing machines
DE2932105A1 (de) * 1979-08-08 1981-02-12 Roland Man Druckmasch Farbwerk fuer eine offsetrotationsdruckmaschine
US4729308A (en) * 1986-08-04 1988-03-08 Am International, Inc. Convertible moisture/ink system in printing or duplicating machines

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"wasserloser offsetdruck", DEUTSCHER DRUCKER, vol. 28, no. 46, 10 December 1992 (1992-12-10), OSTFILDERN(RUIT), pages w10 - w12 *
NOUVELLES GRAPHIQUES, vol. 37, no. 15, 1 September 1987 (1987-09-01), DEURNE-ANVERS, pages 42 - 43 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0761432B1 (fr) * 1995-08-09 1999-12-08 MAN Roland Druckmaschinen AG Dispositif de mouillage pour une machine à imprimer en offset
EP0895858A1 (fr) * 1997-08-07 1999-02-10 Kba-Planeta Ag Tour d'impression d'une machine à imprimer

Also Published As

Publication number Publication date
ATE164116T1 (de) 1998-04-15
DE59501616D1 (de) 1998-04-23
DE4404989C2 (de) 1995-11-30
EP0668159B1 (fr) 1998-03-18
JP2857076B2 (ja) 1999-02-10
JPH07251499A (ja) 1995-10-03
DE4404989A1 (de) 1995-08-24

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