DE2007554B1 - Alcohol dampening system for offset printing machines - Google Patents

Alcohol dampening system for offset printing machines

Info

Publication number
DE2007554B1
DE2007554B1 DE19702007554D DE2007554DA DE2007554B1 DE 2007554 B1 DE2007554 B1 DE 2007554B1 DE 19702007554 D DE19702007554 D DE 19702007554D DE 2007554D A DE2007554D A DE 2007554DA DE 2007554 B1 DE2007554 B1 DE 2007554B1
Authority
DE
Germany
Prior art keywords
dampening
offset printing
printing machines
alcohol
dampening system
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.)
Pending
Application number
DE19702007554D
Other languages
German (de)
Inventor
Hermann 8900 Augsburg Fischer
Original Assignee
Maschinenfabrik Augsburg Nürnberg AG, 8900 Augsburg
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 Maschinenfabrik Augsburg Nürnberg AG, 8900 Augsburg filed Critical Maschinenfabrik Augsburg Nürnberg AG, 8900 Augsburg
Publication of DE2007554B1 publication Critical patent/DE2007554B1/en
Pending legal-status Critical Current

Links

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
    • B41N7/04—Shells for rollers of printing machines for damping 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

Landscapes

  • Printing Plates And Materials Therefor (AREA)

Description

In dem gezeigten Ausführungsbeispiel eines Alkoholfeuchtwerks ist die Auftragwalze 6 ebenfalls mit einer bianken Oberfläche versehen, während die Auftragwalze 5 stoffüberzogen ist und vorzugsweise als Schmutzwalze dient Eine ebenfalls mit Stoff bezogene Walze 8 zwischen der Auftreffstelle der Heberwalze 3 am Feuchtreiber4 und der Auftragwalze 6 dient dabei als Regulier- und Speiche walze. In the embodiment shown, an alcohol dampening system is the applicator roller 6 also provided with a bianken surface, while the Application roller 5 is covered with fabric and preferably also serves as a dirt roller Fabric-covered roller 8 between the point of impact of the siphon roller 3 on the dampening device 4 and the applicator roller 6 serves as a regulating and spoke roller.

Danach läuft die lediglich durch Reibung angetriebene Auftragwalze 6 mit ihrer glatten Oberfläche einerseits auf der glatten Oberfläche des Plattenzylinders 1 und andererseits auf der glatten Oberfläche des Feuchtreibers 4, so daß ein Rutschen dieser Teile aufeinander infolge der Oberflächenglätte leicht eintreten und damit Wasserstreifen gebildet werden können. Die aufgerauhte Oberflache des Feuchtreibers vermindert diese Gefahr erheblich und tragt damit gleichzeitig zur Qualitätsverbesserung des Druckergebisses beL Das Aufrauhen der Feuchtreiberoberfläche kann auch in anderer Weise, z. B. durch Ätzen, mechanische Bearbeitung ot dgl., erfolgen.Then the application roller, which is only driven by friction, runs 6 with its smooth surface on the one hand on the smooth surface of the plate cylinder 1 and on the other hand on the smooth surface of the wet driver 4, so that slipping these parts easily enter one another due to the surface smoothness and thus Streaks of water can be formed. The roughened surface of the wet driver considerably reduces this risk and at the same time contributes to an improvement in quality of the printer's dentition beL The roughening of the surface of the dampness can also be used in other Way, e.g. B. by etching, mechanical processing ot the like., Take place.

Claims (2)

Patentansprüche:Patent claims: 1. Alkoholfeuchtwerk für Offsetdruckmaschinen, bei welchem die Feuchtflüssigkeit mittels einer Heberwalze von einer in einen Feuchtflüssigkeitskasten tauchende Duktorwalze auf einen changierenden verchromten Feuchtreiber gefördert und mittels zweier Auftragwalzen, von denen die in Drehrichtung des Plattenzylinders erste eine stoffüberzogene, die letzte eine glatte Oberfläche aufweist, auf den Plattenzylinder aufgetragen wird, dadurch gekennzeichnet, daß die Mantelfläche des Feuchtreibers (4) von den Enden nach innen hin abnehmende Rauhigkeit aufweist 1. Alcohol dampening unit for offset printing machines, in which the dampening liquid by means of a vibrating roller from a ductor roller immersed in a dampening liquid box conveyed to an iridescent chrome-plated dampener and by means of two applicator rollers, of which the first one covered in the direction of rotation of the plate cylinder, the the latter has a smooth surface on which the plate cylinder is applied, characterized in that the outer surface of the dampening driver (4) from the ends has inwardly decreasing roughness 2. Alkoholfeuchtwerk nach Anspruch 1, dadurch gekennzeichnet, daß die größte Rauhtiefe von etwa 0,3 mm sich von beiden Enden her etwa über 6 bis 8 o/o der Länge des Feuchtreibers (4) erstreckt und nach innen anschließend ein auf eine Rauhtiefe von 0,001 mm gleichmäßig absinkender Bereich von 6 bis 8 ovo der Länge vorgesehen ist2. alcohol dampening system according to claim 1, characterized in that the greatest surface roughness of about 0.3 mm differs from both Ends towards about 6 to 8 o / o of the length of the dampening driver (4) and afterwards on the inside, an area that sinks evenly to a surface roughness of 0.001 mm from 6 to 8 ovo in length is provided
DE19702007554D 1970-02-19 1970-02-19 Alcohol dampening system for offset printing machines Pending DE2007554B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2007554 1970-02-19

Publications (1)

Publication Number Publication Date
DE2007554B1 true DE2007554B1 (en) 1971-08-26

Family

ID=5762677

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702007554D Pending DE2007554B1 (en) 1970-02-19 1970-02-19 Alcohol dampening system for offset printing machines

Country Status (1)

Country Link
DE (1) DE2007554B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2449484A1 (en) * 1979-02-26 1980-09-19 Epic Prod Int FLUID TRANSFER CYLINDER, ITS MANUFACTURING METHOD AND ITS APPLICATION TO THE WETTING AND INKING SYSTEM USED IN OFFSET PRESSES
US5680815A (en) * 1995-02-28 1997-10-28 Man Roland Druckmaschinen Ag Dampening unit for an offset printing machine
WO1998045117A1 (en) * 1997-04-07 1998-10-15 Koenig & Bauer Ag Dampening roller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2449484A1 (en) * 1979-02-26 1980-09-19 Epic Prod Int FLUID TRANSFER CYLINDER, ITS MANUFACTURING METHOD AND ITS APPLICATION TO THE WETTING AND INKING SYSTEM USED IN OFFSET PRESSES
US5680815A (en) * 1995-02-28 1997-10-28 Man Roland Druckmaschinen Ag Dampening unit for an offset printing machine
WO1998045117A1 (en) * 1997-04-07 1998-10-15 Koenig & Bauer Ag Dampening roller
US6293191B1 (en) 1997-04-07 2001-09-25 Koenig & Bauer Aktiengesellschaft Dampening roller

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