EP0090181A1 - Verfahren und Vorrichtung zum Befeuchten von Druckplatten - Google Patents

Verfahren und Vorrichtung zum Befeuchten von Druckplatten Download PDF

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Publication number
EP0090181A1
EP0090181A1 EP83101846A EP83101846A EP0090181A1 EP 0090181 A1 EP0090181 A1 EP 0090181A1 EP 83101846 A EP83101846 A EP 83101846A EP 83101846 A EP83101846 A EP 83101846A EP 0090181 A1 EP0090181 A1 EP 0090181A1
Authority
EP
European Patent Office
Prior art keywords
dampening
dampening solution
printing plate
printing
amount
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.)
Ceased
Application number
EP83101846A
Other languages
German (de)
English (en)
French (fr)
Inventor
Harry M. Dr. Greiner
Burkhardt Dr. Wirz
Gerd Steiner
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 EP0090181A1 publication Critical patent/EP0090181A1/de
Ceased 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0054—Devices for controlling dampening

Definitions

  • the invention relates to a method and a device for moistening printing plates on the plate cylinder of a rotary offset printing machine, in which the amount of dampening solution to be applied to the printing plate is carried out in a defined ratio to the zonally used amount of ink.
  • the amount of dampening solution required does not only depend on the ink consumption, but also on the color itself (emulsifying ability), the blanket and the substrate.
  • the indoor climate plays a major role (temperature and humidity) because a large part of the dampening solution evaporates.
  • the printer In the case of a dampening unit without special means for influencing the supply of dampening solution over the pressure width, the printer must always offer the maximum amount of dampening solution required.
  • the disadvantage that arises from this is, on the one hand, the upper dampness in areas with low dampening solution requirements and, on the other hand, the unnecessarily strong emulsification of water in color.
  • DE-AS 2 022 114 Another device used to maintain the required dampening solution strength is shown in DE-AS 2 022 114.
  • the thickness of the dampening solution film on the printing plate is measured without contact, and depending on the thickness of the dampening solution film, a valve can be actuated by more or less Let dampening solution get on the pressure plate.
  • the optimal dampening can also be determined only for this location. For this and the reasons already mentioned, optimal dampening solution guidance on the pressure plate of the plate cylinder is not possible.
  • the invention is therefore based on the object of reproducibly applying a dampening film corresponding to the zonally required amount of dampening solution to the printing plate of a plate cylinder.
  • a device of this type has decisive advantages over the known conventional devices, which are particularly noticeable in the economy of the entire printing press.
  • a system can serve as a dampening solution metering system which first provides a uniform dampening solution film, which is then modified by elements such as blown air and squeeze rollers which reduce the amount of dampening solution.
  • a system consisting of individual dosing systems, such as e.g. Dampening solution transfer rollers, which consist of individual rings that are mounted independently of one another.
  • the design example described below shows a variant of the device according to the invention, which can change depending on the dampening system used.
  • the dampening solution metering device it is also possible for the dampening solution metering device to apply the dampening solution to the printing plate in finely divided form.
  • the partially illustrated printing unit 21 shows a plate cylinder 1 covered with a printing plate 2, an inking unit 3 with inking rollers 4, 5, 6, 7 and a dampening unit 8 with dampening application rollers 9, 10. Furthermore, seen across the width of the dampening unit 8, several dampening solutions Metering devices 11 provided the dampening solution to zones on a dampening roller 12 of the dampening unit 8.
  • the dampening roller 12 can be driven separately via a motor 13.
  • a dampening solution thickness measuring device 14 is arranged on a cross member 15 between the last dampening application roller 10 seen in the plate cylinder rotation direction and the first ink application roller 4. This arrangement is designed so that the dampening layer thickness measuring device can traverse on the cross member 15 in order to detect the individual dampening layer thicknesses generated zonally by the dampening solution metering devices 11.
  • a computer 16 is assigned to the dampening layer thickness measuring device 14, the dampening solution metering device 11 and the motor 13, which processes the measurement results of the dampening layer thickness measuring device 14 and regulates the dampening layer thickness to a constant value.
  • a setpoint for each wet zone can be entered via a keypad 17 provided on the computer 16. Depending on the programming of the computer 16, a wide variety of operations can then be carried out. After it was shown that it is not necessary for the wet zones to match the color zones, several color zones were assigned to one wet zone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
EP83101846A 1982-03-26 1983-02-25 Verfahren und Vorrichtung zum Befeuchten von Druckplatten Ceased EP0090181A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823211157 DE3211157A1 (de) 1982-03-26 1982-03-26 Verfahren und vorrichtung zum befeuchten von druckplatten
DE3211157 1982-03-26

Publications (1)

Publication Number Publication Date
EP0090181A1 true EP0090181A1 (de) 1983-10-05

Family

ID=6159373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101846A Ceased EP0090181A1 (de) 1982-03-26 1983-02-25 Verfahren und Vorrichtung zum Befeuchten von Druckplatten

Country Status (3)

Country Link
EP (1) EP0090181A1 (enrdf_load_stackoverflow)
JP (1) JPS58217355A (enrdf_load_stackoverflow)
DE (1) DE3211157A1 (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0305796A3 (en) * 1987-08-17 1989-03-22 Grapho Engineering S.R.L. Damping device for offset printing machines
US5843943A (en) * 1994-12-29 1998-12-01 The Regents Of The University Of California Compounds for inhibition of ceramide-mediated signal transduction
EP1157838A1 (en) * 2000-05-17 2001-11-28 Baldwin Jimek AB A method for controlling the amount of fountain solution in a printing press
DE102007028968A1 (de) * 2007-06-23 2008-12-24 Manroland Ag Druckmaschinenleitstand
EP2578410A4 (en) * 2010-05-28 2014-11-26 Yan Andrew Tak Kin ACTIVE PROSPECTIVE INTELLIGENT MONITORING PROCESS FOR A LIQUID FILM AND DEVICE THEREFOR

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444892C2 (de) * 1984-12-08 1986-11-13 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Feuchtmitteldosiervorrichtung für das Feuchtwerk einer Druckmaschine
DD253679A1 (de) * 1986-11-13 1988-01-27 Polygraph Leipzig Verfahren zum regeln der farbdichte
DE3606270C1 (en) * 1986-02-27 1987-03-12 Roland Man Druckmasch Device for the zone-wise metering of damping medium or ink in the damping or inking unit of a rotary printing machine
DE3717904A1 (de) * 1987-05-27 1988-12-08 Heidelberger Druckmasch Ag Verfahren zur regelung des druckprozesses an offsetdruckmaschinen
DE3907584A1 (de) * 1989-03-09 1990-09-13 Heidelberger Druckmasch Ag Verfahren zur feuchteregelung bei einer offsetdruckmaschine
DE3912811A1 (de) * 1989-04-19 1990-10-25 Heidelberger Druckmasch Ag Verfahren und vorrichtung fuer die feuchtmittelfuehrung einer offset-druckmaschine
DE3940141A1 (de) * 1989-12-05 1991-06-06 Rosemount Gmbh & Co Verfahren zur direkten, messtechnischen darstellung einer differenzmessgroesse in ihrer korrekten physikalischen einheit
JPH03227240A (ja) * 1990-02-02 1991-10-08 Mitsubishi Heavy Ind Ltd 湿し水量制御装置
DE102007042458A1 (de) * 2007-09-06 2009-03-12 Manroland Ag Druckwerk einer Druckmaschine
DE102008009300A1 (de) * 2008-02-15 2009-08-20 Manroland Ag Verfahren zum Betreiben einer Druckmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2214721B1 (de) * 1972-03-25 1973-06-14 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Verfahren und vorrichtung zum selbsttaetigen ausregeln von schwankungen der farb- und feuchtfluessigkeitsfuehrung an offsetmaschinen
US3930447A (en) * 1974-07-22 1976-01-06 Harris Corporation Dual purpose display for printing presses
EP0023629A1 (de) * 1979-08-03 1981-02-11 Heidelberger Druckmaschinen Aktiengesellschaft Einrichtung zur zonalen Regulierung der Feuchtmittelführung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312166A (en) * 1966-06-23 1967-04-04 Gentile Frank Adjustable wiper blade assembly for a roller fountain dampener
DE2022114B2 (de) * 1970-05-06 1973-11-22 Maschf Augsburg Nuernberg Ag Einrichtung an Offsetrotationsdruckmaschinen zur Aufrechterhaltung der erforderlichen Feuchtmittelschichtstärke
DE2141247A1 (de) * 1970-08-19 1972-03-09 Harris Intertype Corp., Cleveland, Ohio (V.St A.) Verfahren und Vorrichtung zum Abtasten der Flüssigkeitsmenge auf einem Objekt
JPS5137943B2 (enrdf_load_stackoverflow) * 1971-09-17 1976-10-19
FR2178802B2 (enrdf_load_stackoverflow) * 1972-04-07 1974-08-02 Uniroyal
DE3028025C2 (de) * 1980-07-24 1983-04-14 Miller-Johannisberg Druckmaschinen Gmbh, 6200 Wiesbaden Verfahren zur Veränderung des Farbflusses durch unterschiedliches Verstellen einzelner Breitenzonen eines Farbmessers oder einzelner Farbdosierelemente bei Druckmaschinen-Farbwerken

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2214721B1 (de) * 1972-03-25 1973-06-14 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Verfahren und vorrichtung zum selbsttaetigen ausregeln von schwankungen der farb- und feuchtfluessigkeitsfuehrung an offsetmaschinen
US3930447A (en) * 1974-07-22 1976-01-06 Harris Corporation Dual purpose display for printing presses
EP0023629A1 (de) * 1979-08-03 1981-02-11 Heidelberger Druckmaschinen Aktiengesellschaft Einrichtung zur zonalen Regulierung der Feuchtmittelführung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0305796A3 (en) * 1987-08-17 1989-03-22 Grapho Engineering S.R.L. Damping device for offset printing machines
US5843943A (en) * 1994-12-29 1998-12-01 The Regents Of The University Of California Compounds for inhibition of ceramide-mediated signal transduction
EP1157838A1 (en) * 2000-05-17 2001-11-28 Baldwin Jimek AB A method for controlling the amount of fountain solution in a printing press
DE102007028968A1 (de) * 2007-06-23 2008-12-24 Manroland Ag Druckmaschinenleitstand
EP2578410A4 (en) * 2010-05-28 2014-11-26 Yan Andrew Tak Kin ACTIVE PROSPECTIVE INTELLIGENT MONITORING PROCESS FOR A LIQUID FILM AND DEVICE THEREFOR

Also Published As

Publication number Publication date
JPS58217355A (ja) 1983-12-17
JPH0321347B2 (enrdf_load_stackoverflow) 1991-03-22
DE3211157A1 (de) 1983-10-06

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19830812

STAA Information on the status of an ep patent application or granted ep patent

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18R Application refused

Effective date: 19850901

RIN1 Information on inventor provided before grant (corrected)

Inventor name: STEINER, GERD

Inventor name: GREINER, HARRY M., DR.

Inventor name: WIRZ, BURKHARDT, DR.