EP0732206B1 - Rouleau des presses avec un couchage amoureux de l'encre - Google Patents

Rouleau des presses avec un couchage amoureux de l'encre Download PDF

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Publication number
EP0732206B1
EP0732206B1 EP96103727A EP96103727A EP0732206B1 EP 0732206 B1 EP0732206 B1 EP 0732206B1 EP 96103727 A EP96103727 A EP 96103727A EP 96103727 A EP96103727 A EP 96103727A EP 0732206 B1 EP0732206 B1 EP 0732206B1
Authority
EP
European Patent Office
Prior art keywords
coating
printing press
press roller
roller according
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.)
Expired - Lifetime
Application number
EP96103727A
Other languages
German (de)
English (en)
Other versions
EP0732206A3 (fr
EP0732206A2 (fr
Inventor
Gerhard Dr. Johner
Martin Endisch
Peter Knauer
Karl-Heinz Müller
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 EP0732206A2 publication Critical patent/EP0732206A2/fr
Publication of EP0732206A3 publication Critical patent/EP0732206A3/fr
Application granted granted Critical
Publication of EP0732206B1 publication Critical patent/EP0732206B1/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
    • 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
    • B41N7/06—Shells for rollers of printing machines for inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/26—Construction of inking 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
    • B41N2207/10—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 machine roller with a color-friendly Coating according to the preamble of claim 1.
  • the inking unit has the task of making one possible thin, evenly closed ink film towards the printing plate cylinder transfer.
  • the ink is transported via a complex roller system.
  • the zonal Ink quantity via so-called ink knife, against an inking roller are employed, is regulated, the further ink transport takes place via a so-called ink lifter or directly into the inking unit via an intermediate roller.
  • the Inking unit itself consists of several rollers, some of which are still for one Ensure cross-distribution and ultimately have the task of being in direct contact with ink rollers standing on the printing plate, defined with the necessary ink quantity supply.
  • the inking units are essentially off Roller combinations, consisting of a rubber roller and a polyamide roller, built up.
  • a widely used brand name for the polyamide coatings of these Ramsan is polyamide rollers.
  • These Rilsan coatings usually lie due to the manufacturing process in thicknesses of 0.3 mm to 1.0 mm. This material shows Thermal conductivity values in the range from 0.22 to 0.25 W / mK. A very small one Thermal conductivity now leads to internal tempering, for example tempered water, in its effectiveness for those on the roller Color film are very severely restricted.
  • the information absolutely necessary for the temperature control system namely the Color film temperature, is due to the strong thermal insulation of the Rilsan layer usually very late and heavily damped transferred to the temperature control medium.
  • the means that the control speed and accuracy of the system is strong limited.
  • the temperature constancy of the Color films have an even greater importance.
  • the color film must be in the Temperature range of 30 ° ⁇ 2 ° C can be kept. This task can be done with rilsan-coated paint rubbers cannot be solved satisfactorily at the moment. Especially in reel machines in which the waterless offset is used be performed only very strongly reduced web speeds are currently possible. The performance of the machines is severely limited.
  • the color-friendly coating preferably contains a ultra-hard material made of tungsten carbide and a color-friendly material from one Aluminum-bronze connection.
  • the invention has for its object a new printing press roller with color-friendly coating to create, which has a better thermal conductivity than that in the prior art Technology known printing machine rollers.
  • This object is achieved in that for a printing press roll with a color-friendly coating of the bale surface of the roller core the color-friendly Coating at least one of the elements molybdenum or tungsten as essential Alloy content of at least 50% and a corresponding alloy content not more than 50% of elements alloyable with molybdenum or tungsten contains and has a thickness of 0.05 mm to 0.25 mm.
  • the one with molybdenum and / or Elements which can be alloyed with tungsten can be, for example, iron, chromium or nickel be.
  • This coating of the roll surface of the roll core results in the Color film, even under extreme offset conditions (minimal color decrease, large Open spaces), an extraordinarily good color film stability, so that the feared The ink rollers no longer run smoothly.
  • Molybdenum is characterized by a thermal conductivity value in the range of 140 W / mK. With around 150 W / mK, tungsten is still a bit higher. In connection with the Possibility of making these two elements into comparatively thin layers of only Measurements of 0.05 mm to 0.25 mm, preferably 0.1 mm in thickness, resulted in measurements for thermal conductivity values that are approximately three orders of magnitude higher than those previously used Rilsan coatings with a thickness of 0.3mm. With the Coating according to the invention can one or more rollers of the inking unit a printing press, but experience has shown that it is special advantageous to coat the inking rollers.
  • Molybdenum is also a very corrosion-resistant material that used especially in chemical plant construction due to this property becomes. Since the roller cores in printing machines are generally made of structural steels without special corrosion protection, it has been shown that the coating according to the invention at the same time an excellent Represents corrosion protection.
  • the single figure shows a highly schematic structure of an inking roller 1, the Roller core 2 according to the invention with a coating 3 of the entire bale surface is occupied.
  • the coating 3 according to the invention is preferably used in the ground state with a roughness of R z ⁇ 8 ⁇ m. Depending on the application, it can be advantageous to change this roughness.
  • the coating according to the invention is preferably applied by thermal spraying, especially plasma spraying.
  • suitable processes are the PVD processes (Physical Vapor Deposition), incl. Electron beam vapor deposition (EBPVD), the CVD process (Chemical Vapor Deposition), which support plasma CVD processes, the galvanic processes, the diffusion processes from the Gas phase or the pack, the sintering process, the hot isostatic pressing process (Hippen), Explosive plating and all reactive processes in which the invention Coating is created by deposition from two liquid or gas phases.
  • a subsequent sealing of the coating according to the invention with a color-friendly synthetic resin has been desired, comparatively high Roughness of the coating has proven to be useful. It is based on, among other things this way avoided that color residues in caverns or other pores of the Coating can be kept.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (17)

  1. Rouleau pour presse à imprimer, muni d'un revêtement (3) favorable à l'encre déposé sur la surface convexe du noyau (2) du rouleau, caractérisé en ce que le revêtement (3) favorable à l'encre est formé par un alliage qui contient au moins un des éléments molybdène ou tungstène, formant le composant principal de l'alliage dans une proportion d'au moins 50 % et, dans une proportion correspondante de 50 % maximum, des éléments pouvant être alliés au molybdène ou au tungstène, et en ce que le revêtement (3) est déposé sur une épaisseur comprise entre 0,05 mm et 0,25 mm.
  2. Rouleau pour presse à imprimer selon la revendication 1, caractérisé en ce que le revêtement (3) contient 50 % de molybdène et 50 % de tungstène.
  3. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est conçu en forme de rouleau encreur.
  4. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé par un revêtement (3) déposé par projection thermique.
  5. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé en ce que le revêtement (3) présente une rugosité de surface Rz = 8 µm environ.
  6. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé en ce que le revêtement (3) est une couche déposée par le procédé de dépôt physique en phase vapeur (PVD).
  7. Rouleau pour presse a imprimer selon l'une quelconque des revendications précédentes, caractérisé en ce que le revêtement (3) est une couche déposée par le procédé de vaporisation par faisceau électronique (EBPVD).
  8. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé en ce que le revêtement (3) est une couche déposée par le procédé de dépôt chimique en phase vapeur (CVD).
  9. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé en ce que le revêtement (3) est une couche déposée par le procédé CVD assisté par plasma.
  10. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé par un revêtement (3) déposé par des procédés galvanoplastiques.
  11. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé par un revêtement (3) déposé par diffusion.
  12. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé par un revêtement (3) déposé par frittage.
  13. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé par un revêtement (3) déposé par compression isostatique à température élevée.
  14. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé par un revêtement (3) déposé par placage par explosion.
  15. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé par un revêtement (3) déposé par des procédés réactifs, dans lesquels le revêtement est obtenu par transformation réactive soit à partir de deux phases liquides, soit à partir de deux phases gazeuses.
  16. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé en ce que, après le processus de déposition, la surface du revêtement (3) est traitée par rectification ou polissage.
  17. Rouleau pour presse à imprimer selon l'une quelconque des revendications précédentes, caractérisé en ce que le revêtement est vitrifié avec un agent colmatant les pores et favorable à l'encre.
EP96103727A 1995-03-17 1996-03-09 Rouleau des presses avec un couchage amoureux de l'encre Expired - Lifetime EP0732206B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19509741A DE19509741A1 (de) 1995-03-17 1995-03-17 Druckmaschinenwalze, insbesondere Farbwalze
DE19509741 1995-03-17

Publications (3)

Publication Number Publication Date
EP0732206A2 EP0732206A2 (fr) 1996-09-18
EP0732206A3 EP0732206A3 (fr) 1997-08-27
EP0732206B1 true EP0732206B1 (fr) 1999-12-22

Family

ID=7756972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103727A Expired - Lifetime EP0732206B1 (fr) 1995-03-17 1996-03-09 Rouleau des presses avec un couchage amoureux de l'encre

Country Status (2)

Country Link
EP (1) EP0732206B1 (fr)
DE (2) DE19509741A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19653911C2 (de) * 1996-12-21 2003-03-27 Roland Man Druckmasch Druckmaschinenwalze mit einer farbfreundlichen Beschichtung der Ballenfläche des Walzenkerns, insbesondere Farbwalze

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2343283C2 (de) * 1973-08-28 1983-07-14 Metallurgik GmbH, 6078 Neu-Isenburg Anwendung des Plasmaspritzens von oxidkeramischen Schichten sowie Haftschichten auf Druckwalzen und Druckplatten
DD136480A1 (de) * 1978-05-26 1979-07-11 Herbert Patzelt Ein-oder mehrschichtiger mantel fuer bogenfuehrende zylinder
DE3316348C2 (de) * 1983-05-05 1985-03-07 PTG Plasma-Oberflächentechnik GmbH, 7240 Horb Verfahren zum Beschichten eines Werkstückes
DE3608286A1 (de) * 1985-04-03 1986-10-09 Winfried 7758 Meersburg Heinzel Verfahren zur oberflaechenbehandlung eines druckmaschinenzylinders, druckmaschinenzylinder sowie verwendung derselben
SE447362B (sv) * 1985-06-14 1986-11-10 Kanthal Dev Ab Schaberklinga
JP2635046B2 (ja) * 1987-05-27 1997-07-30 株式会社 東京機械製作所 平版印刷機のインキ装置用ローラーおよび平版印刷機のインキ装置用ローラーの製造方法

Also Published As

Publication number Publication date
DE19509741A1 (de) 1996-09-19
DE59603943D1 (de) 2000-01-27
EP0732206A3 (fr) 1997-08-27
EP0732206A2 (fr) 1996-09-18

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