EP0394700B1 - Druckzylinder für Druckmaschinen, insbesondere Offsetdruckmaschinen - Google Patents

Druckzylinder für Druckmaschinen, insbesondere Offsetdruckmaschinen Download PDF

Info

Publication number
EP0394700B1
EP0394700B1 EP90106105A EP90106105A EP0394700B1 EP 0394700 B1 EP0394700 B1 EP 0394700B1 EP 90106105 A EP90106105 A EP 90106105A EP 90106105 A EP90106105 A EP 90106105A EP 0394700 B1 EP0394700 B1 EP 0394700B1
Authority
EP
European Patent Office
Prior art keywords
impression cylinder
cover surface
cylinder
depressions
cover
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
EP90106105A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0394700A3 (de
EP0394700A2 (de
Inventor
Bert Cappel
Werner Sondergeld
Hubert Zschetzsche
Georg Hartung
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 EP0394700A2 publication Critical patent/EP0394700A2/de
Publication of EP0394700A3 publication Critical patent/EP0394700A3/de
Application granted granted Critical
Publication of EP0394700B1 publication Critical patent/EP0394700B1/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
    • 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
    • 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
    • B41N2207/10—Location or type of the layers in shells for rollers of printing machines characterised by inorganic compounds, e.g. pigments

Definitions

  • the invention relates to a printing cylinder for printing machines, in particular offset printing machines.
  • duplication is known in sheet rotation. This means a stretching of the halftone dot or the appearance of a double dot in the printed image. The print becomes full and out of focus. The point can duplicate on all sides depending on the cause. The same applies to parts of writing and drawings.
  • Various causes are blamed for duplicating in sheet rotation. For example, an incorrect handling, a rubber blanket that is too loose, wrong direction of the rubber blanket, a rubber blank that is too long, loose clamping strips of the rubber blanket, a moving plate cylinder, loosened grippers, dented paper or paper with different force-elongation behavior, electrostatically charged paper and a pressure cylinder, the surface of which is not clean, ie is smeared by paint residues, rust and the like.
  • a sheet-guiding film is known as an elevator for impression cylinders, which has good ink delivery behavior.
  • an arrangement for preventing the soiling of the impression cylinder of a counterpressure unit or between an offset printing unit and a counterpressure unit is arranged Sheet transfer cylinder known by means of an ink-repellent surface.
  • the object of the invention is to provide a printing cylinder for printing machines, e.g. To create offset printing machines, the sheet-guiding surface of which prevents different expansions of the paper and on this basis also the point shift in the printed image.
  • a jacket surface consisting of a metallic material, preferably copper, is effective against duplication if a wrinkled-grain screen structure with a screen fineness between 12 and 50 lines / cm is etched into the metallic jacket surface.
  • the production can be carried out, for example, in a manner comparable to the production of a gravure etching of gravure cylinders or rotogravure plates.
  • the jacket surface can be a direct component of the printing cylinder or a plate, film or the like, which is glued or stretched onto the printing cylinder.
  • an additional coating with a wear-resistant material e.g. a chrome plating is provided.
  • a wear-resistant material e.g. a chrome plating
  • the latter also works against smearing, since it is color-repellent. This is of particular importance on an impression cylinder of an offset printing unit.
  • the jacket surface according to the invention is thus suitable as the surface of impression cylinders, particularly in face and back printing.
  • the pressure cylinder 1 shown schematically in FIG. 1 is provided with a jacket surface 2, which according to FIG. 2 has a relief or a structure 3 in section, which consists of cup-like depressions 4, which are etched directly between grid bars 5 of a wrinkled grid Sheath surface 2 of the printing cylinder 1 or in a plate or the like that has been subsequently clamped or glued onto the printing cylinder 1.
  • the screen fineness of the wrinkled screen structure 3 is 12 to 50 lines (depressions) / cm depending on whether cardboard or thin paper is being processed.
  • the coarser structure of 12 lines (depressions) / cm is suitable for cardboard, while the finer structure of 30 to 50 lines (depressions) / cm is suitable for thin paper.
  • the jacket surface 2 consisting of copper, after the wrinkled grain structure 3 has been deeply etched into the jacket surface 2, is coated with a wear-resistant material, preferably with chrome.
  • a wear-resistant material preferably with chrome.
  • Such a structured outer surface 2 of the printing cylinder 1 prevents duplication and / or smearing of freshly printed sheets on sheet-guiding cylinders, since movement of the paper on the surface of the printing cylinder 1 is prevented, while at the same time preventing the structured surface from being marked in the printed image because the jacket surface 2 according to the invention forms a uniform base for the entire printed image.
  • the printing cylinder jacket surface 2 according to the invention is produced on a plate, an elevator, a film or the like, which is to be subsequently glued on or clamped onto the printing cylinder 1, the method steps mentioned under 1 to 3 can be omitted. Individual process steps can also be replaced by equivalent steps, e.g. Imprint a corresponding random structure before etching.
  • the production method alternatively also includes the stamping, engraving of metallic copper jacket surfaces 2 or the washing out of plastic surfaces. Details not mentioned, for example process parameters corresponding to the known intaglio etching of intaglio cylinders or intaglio plates. The same applies to the other methods mentioned for producing a jacket surface 2 with the wrinkled grain grid structure 3 according to the invention.
  • the gripper pad in the channel of the printing cylinder 1 is indicated by 6.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Chemically Coating (AREA)
  • Printing Methods (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
EP90106105A 1989-04-26 1990-03-30 Druckzylinder für Druckmaschinen, insbesondere Offsetdruckmaschinen Expired - Lifetime EP0394700B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913818A DE3913818A1 (de) 1989-04-26 1989-04-26 Druckzylinder fuer druckmaschinen, insbesondere offsetdruckmaschinen
DE3913818 1989-04-26

Publications (3)

Publication Number Publication Date
EP0394700A2 EP0394700A2 (de) 1990-10-31
EP0394700A3 EP0394700A3 (de) 1991-07-10
EP0394700B1 true EP0394700B1 (de) 1994-09-07

Family

ID=6379531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106105A Expired - Lifetime EP0394700B1 (de) 1989-04-26 1990-03-30 Druckzylinder für Druckmaschinen, insbesondere Offsetdruckmaschinen

Country Status (3)

Country Link
EP (1) EP0394700B1 (enrdf_load_stackoverflow)
AT (1) ATE111034T1 (enrdf_load_stackoverflow)
DE (2) DE3913818A1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207119C2 (de) * 1992-03-06 1999-09-02 Roland Man Druckmasch Bogenführendes Druckzylindermantelprofil
DE19515393B4 (de) * 1995-04-26 2004-01-15 Man Roland Druckmaschinen Ag Bedruckstofführende Oberflächenstruktur, vorzugsweise für Druckmaschinenzylinder oder deren Aufzüge
US6048446A (en) * 1997-10-24 2000-04-11 R.R. Donnelley & Sons Company Methods and apparatuses for engraving gravure cylinders

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1258873C2 (de) * 1963-05-27 1974-01-24 Anordnung zum verhueten des beschmutzens des gegendruckzylinders eines widerdruckwerkes oder des zwischen einem schoendruck- und einem widerdruckwerk angeordneten bogenuebertragungszylinders mittels farbabstossender oberflaeche
DE2820549A1 (de) * 1977-06-24 1979-01-04 Von Roll Ag Metallische bogenfuehrungsfolie
EP0017776A1 (de) * 1979-04-24 1980-10-29 Heidelberger Druckmaschinen Aktiengesellschaft Bogenführende Folie als Aufzug für Gegendruckzylinder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1831636U (de) * 1960-12-22 1961-05-25 Ludwig Nagel Pappierleitwalze fuer rotations-druckmaschinen.
DE2245301A1 (de) * 1972-09-15 1974-04-04 Springer Ag Verlag Axel Farbauftragwalze
DD136480A1 (de) * 1978-05-26 1979-07-11 Herbert Patzelt Ein-oder mehrschichtiger mantel fuer bogenfuehrende zylinder
GB2192254B (en) * 1986-07-02 1990-03-21 Nippon Tenshashi Kk Metal roller

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1258873C2 (de) * 1963-05-27 1974-01-24 Anordnung zum verhueten des beschmutzens des gegendruckzylinders eines widerdruckwerkes oder des zwischen einem schoendruck- und einem widerdruckwerk angeordneten bogenuebertragungszylinders mittels farbabstossender oberflaeche
DE2820549A1 (de) * 1977-06-24 1979-01-04 Von Roll Ag Metallische bogenfuehrungsfolie
EP0017776A1 (de) * 1979-04-24 1980-10-29 Heidelberger Druckmaschinen Aktiengesellschaft Bogenführende Folie als Aufzug für Gegendruckzylinder

Also Published As

Publication number Publication date
DE3913818A1 (de) 1990-10-31
EP0394700A3 (de) 1991-07-10
DE3913818C2 (enrdf_load_stackoverflow) 1992-09-24
DE59007026D1 (de) 1994-10-13
EP0394700A2 (de) 1990-10-31
ATE111034T1 (de) 1994-09-15

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