EP0282754A2 - Dispositif d'encrage et de mouillage pour machine à imprimer offset - Google Patents

Dispositif d'encrage et de mouillage pour machine à imprimer offset Download PDF

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Publication number
EP0282754A2
EP0282754A2 EP88102406A EP88102406A EP0282754A2 EP 0282754 A2 EP0282754 A2 EP 0282754A2 EP 88102406 A EP88102406 A EP 88102406A EP 88102406 A EP88102406 A EP 88102406A EP 0282754 A2 EP0282754 A2 EP 0282754A2
Authority
EP
European Patent Office
Prior art keywords
roller
inking
dampening
inking roller
ink
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Withdrawn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
EP88102406A
Other languages
German (de)
English (en)
Other versions
EP0282754A3 (fr
Inventor
Willi Jeschke
Rudi Junghans
Hans-Jürgen Kusch
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
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0282754A2 publication Critical patent/EP0282754A2/fr
Publication of EP0282754A3 publication Critical patent/EP0282754A3/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to an ink dampening unit for offset printing machines with an application roller assigned to the plate cylinder with an elastic surface, the diameter of which corresponds approximately to the plate cylinder diameter, with an inking unit assigned to the application roller, with rider rollers and with a dampening unit, the ink-guiding roller of the ink roller train being driven Ink roller is formed.
  • the relatively large inking roller is arranged between an inking roller of the inking unit and a dampening roller of the dampening unit, these two units being provided opposite one another.
  • the diameter of the applicator roller is chosen so that the sheet format to be printed is advantageously fully covered once.
  • the disadvantage of this design of a ink dampening system is that, in addition to the given tendency to stenciling, the dampening solution is supplied immediately before the inking of the plate, so that constant dampening solution guidance is not always guaranteed.
  • the drive of the inking roller when passing through the cylinder channel of the plate cylinder is given only by the inking roller, while the dampening roller emits very little drive power due to the existing dampening solution. Based on this, it is the object of the invention to improve the drive of the inking roller and to optimally prepare the inked water film fed to the printing plate.
  • the dampening unit is preceded by a second inking roller that after the second inking roller the dampening roller of the dampening unit and then a driven friction roller with a rough surface on the inking roller are arranged.
  • the ink dampening film on the inking roller is additionally processed, so that water emulsifies mechanically Color is done. This largely prevents stenciling and improves the quality of the inking of the printing plate.
  • the connecting roller with elastic surface assigned to the second inking roller according to claim 2 can be set at the start of operation on the dampening agent-carrying roller of the dampening unit, so that the dampening time is shortened. When washing, it can be placed on the roller of the dampening unit in order to clean all rollers at the same time with one wash cycle.
  • both rollers e.g. can be connected by a gear drive, an individual influencing of the dampening solution guide can be achieved, the rough chrome surface of the friction roller favors the incorporation of the dampening solution into the ink.
  • the dampening unit downstream of the rubbing roller can be carried out on its outer surface with a combination of chrome and copper surfaces, so that the working up and incorporation of paint and water is improved, and prevented by the partially colorful surface is that the water film is only on top of the paint.
  • the embodiment according to claim 5 enables, in addition to the improved drive of the inking roller, a simple removal of the same from the plate cylinder, so that the total number of rollers to be switched on and off is reduced.
  • the plate cylinder 1 is assigned an inking roller 2 with approximately the same diameter.
  • an inking unit 3 is initially provided, the last roller of which is designed as a driven inking roller 4.
  • This is assigned an inking roller 5, a lifting roller 6 and an ink fountain roller 7 with ink fountain 8.
  • rider rollers 9 are provided which are in rolling contact with one another via intermediate rollers 10. This group of rollers serves to homogenize the ink film applied by the inking unit 3.
  • a dampening unit 11 On the inking roller 2, the inking unit 3 opposite, a dampening unit 11 is provided that a roller 12 leading from a fountain solution, e.g. can have a chrome surface, and consists of an immersion roller 13, preferably with a rubber surface, the immersion roller 13 being immersed in the dampening solution supply of the dampening solution box 14.
  • a second inking roller 15 is provided, which is also driven and, in addition to the homogenization of the ink film, brings about a significant improvement in the drive of the inking roller 2.
  • This second inking roller 15 is assigned a connecting roller 16, which is mounted so that it can be set against the roller 12 of the dampening unit 11.
  • a further friction roller 17 is arranged on the outer surface thereof, which can be provided with a rough chrome outer surface or on the outer surface of which a grid combination of chrome and copper surfaces is provided. This allows the dampening solution supplied by the dampening unit 11 to be incorporated very well into the ink film provided on the inking roller 2.
  • the drawing does not show that the two rollers 12 and 13 of the dampening unit 11 can be driven by a separate motor, which is preferably associated with a journal of a roller, both rollers being able to be coupled via a gear drive.
  • the inking roller 2 On and off the plate cylinder 1, it is advantageous if it is mounted so that it can be removed from the plate cylinder 1 perpendicular to the connecting line 18 between the two inking rollers 4 and 15. In this case, only the friction rollers 9 with the intermediate rollers 10 have to be lifted off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP88102406A 1987-03-14 1988-02-19 Dispositif d'encrage et de mouillage pour machine à imprimer offset Withdrawn EP0282754A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3708347 1987-03-14
DE19873708347 DE3708347A1 (de) 1987-03-14 1987-03-14 Farb-feuchtwerk fuer offsetdruckmaschinen

Publications (2)

Publication Number Publication Date
EP0282754A2 true EP0282754A2 (fr) 1988-09-21
EP0282754A3 EP0282754A3 (fr) 1990-01-31

Family

ID=6323094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102406A Withdrawn EP0282754A3 (fr) 1987-03-14 1988-02-19 Dispositif d'encrage et de mouillage pour machine à imprimer offset

Country Status (4)

Country Link
EP (1) EP0282754A3 (fr)
JP (1) JPS63288753A (fr)
CN (1) CN1008254B (fr)
DE (1) DE3708347A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057817A1 (de) * 2003-12-15 2005-07-14 Heidelberger Druckmaschinen Ag Changiermechanismus für eine Reibwalze einer Druckmaschine
CN102406235A (zh) * 2011-07-12 2012-04-11 广东中烟工业有限责任公司 卷烟机钢印油墨传动系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924313A (en) * 1974-05-24 1975-12-09 Standex Int Corp Metal applicator roll
FR2392827A1 (fr) * 1977-06-01 1978-12-29 Rotaprint Gmbh Dispositif d'encrage et de mouillage pour machine a imprimer ou de duplication offset
GB2034250A (en) * 1978-10-26 1980-06-04 Rotaprint Gmbh An inking and Moistening Mechanism for a Rotary Offset Printing Press
EP0071108B1 (fr) * 1981-07-31 1987-06-03 Dahlgren Manufacturing Company Procédé et dispositif pour appliquer de l'encre et de l'eau à une plaque d'impression

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB700121A (en) * 1951-05-25 1953-11-25 Coates Brothers & Co Improvements in lithographic printing apparatus
DE2013321B2 (de) * 1970-03-20 1972-04-06 Maschinenfabrik Augsburg Nurn berg AG, 8900 Augsburg Farbwerk fuer offsetrotationsdruckmaschinen
DE2432576B2 (de) * 1974-07-06 1976-04-15 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Feuchtreiber in feuchtwerken
US4208963A (en) * 1978-04-18 1980-06-24 Dahlgren Manufacturing Company Newspaper printing system
DE2902230A1 (de) * 1979-01-20 1980-07-24 Maschf Augsburg Nuernberg Ag Farbwerk
DE3329331A1 (de) * 1983-08-13 1985-03-07 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Druckwerk mit kurzem farbwerk

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924313A (en) * 1974-05-24 1975-12-09 Standex Int Corp Metal applicator roll
FR2392827A1 (fr) * 1977-06-01 1978-12-29 Rotaprint Gmbh Dispositif d'encrage et de mouillage pour machine a imprimer ou de duplication offset
GB2034250A (en) * 1978-10-26 1980-06-04 Rotaprint Gmbh An inking and Moistening Mechanism for a Rotary Offset Printing Press
EP0071108B1 (fr) * 1981-07-31 1987-06-03 Dahlgren Manufacturing Company Procédé et dispositif pour appliquer de l'encre et de l'eau à une plaque d'impression

Also Published As

Publication number Publication date
DE3708347A1 (de) 1988-09-22
CN88101009A (zh) 1988-10-05
EP0282754A3 (fr) 1990-01-31
JPS63288753A (ja) 1988-11-25
DE3708347C2 (fr) 1988-12-22
CN1008254B (zh) 1990-06-06

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