EP0732206A2 - Printing press roller, especially inking roller - Google Patents
Printing press roller, especially inking roller Download PDFInfo
- Publication number
- EP0732206A2 EP0732206A2 EP96103727A EP96103727A EP0732206A2 EP 0732206 A2 EP0732206 A2 EP 0732206A2 EP 96103727 A EP96103727 A EP 96103727A EP 96103727 A EP96103727 A EP 96103727A EP 0732206 A2 EP0732206 A2 EP 0732206A2
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- EP
- European Patent Office
- Prior art keywords
- coating
- printing machine
- roller according
- machine roller
- molybdenum
- 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.)
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Classifications
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- 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
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- 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
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- 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
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- 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 printing machine rollers, in particular ink rollers of offset machines, and preferably ink rubbing cylinders there, which are provided with a coating on their surface.
- ink rollers of offset machines and preferably ink rubbing cylinders there, which are provided with a coating on their surface.
- surfaces that must be easily wettable with oils, mineral oil and mineral oil-bound substances, such as offset inks.
- these surfaces must be very water-repellent, since otherwise the color film - known as bare running - can be torn open.
- the inking unit has the task of transferring a thin, uniformly closed ink film to the printing plate cylinder.
- the ink is transported using a complex roller system.
- the ink quantity is regulated zonally via so-called ink knives, which are set against an inking roller
- the further ink transport takes place via a so-called ink lifter or directly via an intermediate roller into the inking unit.
- the inking unit itself consists of several rollers, some of which still ensure cross-rubbing and ultimately have the task of supplying the ink rollers in direct contact with the printing plate in a defined manner with the necessary ink quantity.
- the inking units are essentially off Roller combinations consisting of a rubber roller and a polyamide roller.
- a common brand name for the polyamide coatings of these polyamide rollers is Rilsan. As a rule, these Rilsan coatings are available in thicknesses of 0.3 mm to 1.0 mm. This material has thermal conductivity values in the range of 0.22 to 0.25 W / mK. A very low thermal conductivity now means that the internal temperature, for example by tempered water, is very limited in its effectiveness for the ink film on the roller.
- the information absolutely necessary for the temperature control system namely the color film temperature, is usually very late and strongly dampened and transferred to the temperature control medium due to the strong thermal insulation of the Rilsan layer. This means that the control speed and accuracy of the system is severely restricted.
- the invention is therefore based on the object of finding a color-friendly coating of printing machine rollers, in particular inking rollers, which is comparable to Rilsan and which additionally has excellent thermal conductivity and, moreover, has a high wear resistance which cannot be achieved with copper layers previously used.
- a coating which contains the elements molybdenum and tungsten in each case 50%, or in each case molybdenum at least 50% or tungsten at least 50% with alloyable elements mixed, contains as an alloy portion, or consists entirely of one of the two elements molybdenum or tungsten.
- the elements alloyable with molybdenum and / or tungsten can be, for example, iron, chromium or nickel.
- the ink film has an extraordinarily good ink film stability, even under extreme offset conditions (minimal ink take-up, large open spaces), so that the feared bare running of the ink rollers no longer occurs.
- 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 processing these two elements into comparatively thin layers of only 0.05mm to 0.25mm, preferably 0.1mm thick, measurements of the thermal conductivity resulted in values that are about three orders of magnitude higher than those of the Rilsan coatings used previously a thickness of 0.3mm.
- One or more rollers of the inking unit of a printing press can be provided with the coating according to the invention, but experience has shown that it is particularly advantageous to coat the inking rollers.
- Molybdenum is also a very corrosion-resistant material that is used in particular in chemical plant construction due to this property. Since the roller cores in printing machines are generally made of structural steel without special corrosion protection, it has been shown that the coating according to the invention also represents excellent corrosion protection.
- the single figure shows a highly schematic structure of an inking roller 1, the roller core 2 of which, according to the invention, is coated with a coating 3 of the entire bale surface.
- the coating 3 according to the invention is preferably to be 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, in particular plasma spraying.
- Other processes suitable for producing the coating 3 are the PVD processes, including electron beam vapor deposition (EBPVD), the CVD processes, the plasma-assisted CVD processes, the galvanic processes, the diffusion processes from the gas phase or the pack, the sintering processes, the Hot isostatic pressing processes, explosive plating and all reactive processes in which the coating according to the invention is formed by deposition from two liquid or gas phases.
- EBPVD electron beam vapor deposition
- CVD chemical vapor deposition
- the galvanic processes the diffusion processes from the gas phase or the pack
- the sintering processes the Hot isostatic pressing processes
- explosive plating explosive plating and all reactive processes in which the coating according to the invention is formed by deposition from two liquid or gas phases.
- Subsequent sealing of the coating according to the invention with a color-friendly synthetic resin has proven expedient with the desired, comparatively high roughness of the coating. In this way it is avoided
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- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Die Erfindung betrifft Druckmaschinenwalzen, insbesondere Farbwalzen von Offsetmaschinen, und dort Vorzugsweise Farbreibzylinder, die auf ihrer Oberfläche mit einer Beschichtung versehen werden. In verschiedenen Bereichen der Anlagentechnik besteht ein Bedarf an Oberflächen, die leicht mit Ölen, Mineralöl und mineralölgebundenen Stoffen, wie zum Beispiel Offsetfarben benetzbar sein müssen. Darüber hinaus müssen diese Oberflächen sehr gut wasserabweisend sein, da andernfalls mit einem Aufreißen des Farbfilms - das sogenannte Blanklaufen - zu rechnen ist.The invention relates to printing machine rollers, in particular ink rollers of offset machines, and preferably ink rubbing cylinders there, which are provided with a coating on their surface. In various areas of plant engineering there is a need for surfaces that must be easily wettable with oils, mineral oil and mineral oil-bound substances, such as offset inks. In addition, these surfaces must be very water-repellent, since otherwise the color film - known as bare running - can be torn open.
In einer Offsetdruckmaschine hat das Farbwerk die Aufgabe, einen möglichst dünnen, gleichmäßig geschlossenen Farbfilm auf den Druckplattenzylinder zu übertragen. Der Farbtransport erfolgt bei modernen Druckmaschinen über ein komplexes Walzensystem. Ausgehend von einem Farbkasten, in dem zonal die Farbmenge über sogenannte Farbmesser, die gegen eine Farbduktorwalze angestellt sind, geregelt wird, erfolgt der weitere Farbtransport über einen sogenannten Farbheber oder direkt über eine Zwischenwalze in das Farbwerk. Das Farbwerk selbst besteht aus mehreren Walzen, die zum Teil noch für eine Querverreibung sorgen und letztlich die Aufgabe haben, die in direktem Kontakt mit der Druckplatte stehenden Farbwalzen, definiert mit der notwendigen Farbmenge zu versorgen. Da den rheologischen Eigenschaften der Farbe für den Druckprozeß eine entscheidende Bedeutung zukommt, sind in modernen Druckmaschinen mehrere Farbwalzen temperiert. Das heißt, es wird versucht, die Farbe in einem für den Offsetprozeß günstigen Temperaturbereich zu belassen. Nur so sind die Farbspaltungsprozesse zwischen zwei Farbwalzen beherrschbar. Diese Farbspaltungsprozesse sind letztlich notwendig, um die gewünschte Aufteilung der angebotenen Farbmenge in weiterzutransportierende Farbe und rückzutransportierende Farbe zu gewährleisten. Dem momentanen Stand der Technik entsprechend, sind die Farbwerke im wesentlichen aus Walzenkombinationen, bestehend aus einer Gummiwalze und einer Polyamidwalze, aufgebaut. Ein weit verbreiteter Markenname für die Polyamidbeschichtungen dieser Polyamidwalzen ist Rilsan. Diese Rilsanbeschichtungen liegen in der Regel herstellungsbedingt in Dicken von 0,3 mm bis 1,0 mm vor. Dieser Werkstoff weist Wärmeleitfähigkeitswerte im Bereich von 0,22 bis 0,25 W/mK auf. Eine sehr geringe Wärmeleitfähigkeit führt nun dazu, daß Innentemperierungen, zum Beispiel durch temperiertes Wasser, in ihrer Wirksamkeit für den auf der Walze befindlichen Farbfilm sehr stark eingeschränkt sind.In an offset printing machine, the inking unit has the task of transferring a thin, uniformly closed ink film to the printing plate cylinder. In modern printing machines, the ink is transported using a complex roller system. Starting from an ink fountain, in which the ink quantity is regulated zonally via so-called ink knives, which are set against an inking roller, the further ink transport takes place via a so-called ink lifter or directly via an intermediate roller into the inking unit. The inking unit itself consists of several rollers, some of which still ensure cross-rubbing and ultimately have the task of supplying the ink rollers in direct contact with the printing plate in a defined manner with the necessary ink quantity. Since the rheological properties of the ink are of crucial importance for the printing process, several inking rollers are tempered in modern printing machines. This means that an attempt is made to leave the color in a temperature range which is favorable for the offset process. This is the only way to control the ink splitting processes between two inking rollers. These color splitting processes are ultimately necessary in order to ensure the desired division of the color quantity offered into color to be transported further and color to be transported back. In accordance with the current state of the art, the inking units are essentially off Roller combinations consisting of a rubber roller and a polyamide roller. A common brand name for the polyamide coatings of these polyamide rollers is Rilsan. As a rule, these Rilsan coatings are available in thicknesses of 0.3 mm to 1.0 mm. This material has thermal conductivity values in the range of 0.22 to 0.25 W / mK. A very low thermal conductivity now means that the internal temperature, for example by tempered water, is very limited in its effectiveness for the ink film on the roller.
Die für das Temperaturregelsystem unbedingt notwendige Information, nämlich die Farbfilmtemperatur, wird also durch die starke Wärmeisolation der Rilsanschicht meist sehr verspätet und stark gedämpft an das Temperiermedium übertragen. Das heißt, die Regelgeschwindigkeit und -genauigkeit des Systems ist somit stark eingeschränkt.The information absolutely necessary for the temperature control system, namely the color film temperature, is usually very late and strongly dampened and transferred to the temperature control medium due to the strong thermal insulation of the Rilsan layer. This means that the control speed and accuracy of the system is severely restricted.
Als problematisch hat sich in jüngster Vergangenheit diese Tatsache nicht nur bei schnellaufenden Rollenmaschinen erwiesen, sondern insbesondere auch bei wasserlos geführten Offsetmaschinen, den sogenannten Toray-Maschinen. Bei schnellaufenden Rollenmaschinen ist aufgrund der hohen Dynamik die Erwärmung des Farbfilms im Farbwerk, ausgelöst durch die Walk- und Reibarbeit der Walzenpaarungen zueinander, extrem hoch, so daß ohne aufwendige Innenkühlung ein stabiler Prozeß bei den hohen Geschwindigkeiten überhaupt nicht denkbar wäre. Trotz dieser konstruktiven Maßnahmen müssen auch die Farben so abgestimmt sein, daß sie, ähnlich einem Motoröl, über einen Viskositätsbereich verfügen, der offsettechnisch brauchbar ist. Werden nun Sonderfarben eingesetzt, die über einen derartigen breiten Viskositätsbereich nicht verfügen, treten in schnellen Rollenmaschinen massive Farbspaltungsprobleme auf, da die rheologischen Eigenschaften nicht mehr offsetgerecht sind. Solche Schwierigkeiten können sein, Farbrupfen, zu geringe Farbdichte, totale Neigung zum Überemulgieren, Farbschübe und ähnliches.In the recent past, this fact has proven to be problematic not only in the case of high-speed reel machines, but in particular also in the case of waterless offset machines, the so-called Toray machines. In high-speed web presses, the heating of the ink film in the inking unit, triggered by the flexing and rubbing work of the roller pairs to each other, is extremely high due to the high dynamics, so that a stable process at high speeds would not be conceivable without complex internal cooling. Despite these constructive measures, the colors must also be coordinated so that, similar to an engine oil, they have a viscosity range that can be used in offset technology. If special colors are used that do not have such a wide viscosity range, massive color splitting problems occur in fast reel machines, since the rheological properties are no longer offset-compatible. Such difficulties can be paint snapping, insufficient paint density, total tendency to over-emulsify, paint spurts and the like.
In wasserlos geführten Offsetmaschinen (Toray) kommt der Temperaturkonstanz des Farbfilms eine noch wesentlich größere Bedeutung zu. Der Farbfilm muß im Temperaturbereich von 30° ± 2° C gehalten werden. Diese Aufgabe kann mit rilsanbeschichteten Farbreibern zur Zeit nicht befriedigend gelöst werden. Insbesondere in Rollenmaschinen, in denen der Toray-Prozeß durchgeführt werden soll, sind momentan immer nur sehr stark verringerte Bahngeschwindigkeiten möglich. Die Leistungsfähigkeit der Maschinen ist damit stark eingeschränkt.In waterless offset machines (Toray) the temperature constancy of the color film is of even greater importance. The ink film must be kept in the temperature range of 30 ° ± 2 ° C. This task cannot currently be solved satisfactorily with Rilsan-coated paint rubbers. Especially in reel machines in which the Toray process is carried out only very strongly reduced web speeds are currently possible. The performance of the machines is severely limited.
Der Erfindung liegt daher die Aufgabe zugrunde, eine zu Rilsan vergleichbar farbfreundliche Beschichtung von Druckmaschinenwalzen, insbesondere Farbwalzen zu finden, die zusätzlich über eine ausgezeichnete Wärmeleitfähigkeit verfügt und darüber hinaus eine hohe Verschleißfestigkeit aufweist, die mit früher verwendeten Kupferschichten eben nicht erreichbar ist.The invention is therefore based on the object of finding a color-friendly coating of printing machine rollers, in particular inking rollers, which is comparable to Rilsan and which additionally has excellent thermal conductivity and, moreover, has a high wear resistance which cannot be achieved with copper layers previously used.
Diese Aufgabe wird dadurch gelöst, daß für bestimmte Druckmaschinenwalzen insbesondere Farbwalzen, vorzugsweise die Farbreibwalzen einer Druckmaschine eine Beschichtung vorgesehen ist, die die Elemente Molybdän und Wolfram zu jeweils 50%, oder jeweils Molybdän zumindest zu 50% oder Wolfram zumindest zu 50% mit legierungsfähigen Elementen vermischt,als Legierungsanteil enthält, oder vollständig aus einem der beiden Elemente Molybdän oder Wolfram besteht. Die mit Molybdän und/oder Wolfram legierungsfähigen Elemente können beispielsweise Eisen, Chrom oder Nickel sein.This object is achieved in that for certain printing machine rollers, in particular ink rollers, preferably the inking rollers of a printing machine, a coating is provided which contains the elements molybdenum and tungsten in each case 50%, or in each case molybdenum at least 50% or tungsten at least 50% with alloyable elements mixed, contains as an alloy portion, or consists entirely of one of the two elements molybdenum or tungsten. The elements alloyable with molybdenum and / or tungsten can be, for example, iron, chromium or nickel.
In Verbindung mit einer derartigen Beschichtung ergibt sich für den Farbfilm, selbst bei extremen Offsetbedingungen (geringste Farbabnahme, große Freiflächen), eine außerordentlich gute Farbfilmstabilität, so daß das gefürchtete Blanklaufen der Farbwalzen nicht mehr auftritt.In connection with such a coating, the ink film has an extraordinarily good ink film stability, even under extreme offset conditions (minimal ink take-up, large open spaces), so that the feared bare running of the ink rollers no longer occurs.
Molybdän ist gekennzeichnet durch einen Wärmeleitfähigkeitswert im Bereich von 140 W/mK. Wolfram liegt mit rund 150 W/mK noch etwas darüber. In Verbindung mit der Möglichkeit, diese beiden Elemente zu vergleichsweise dünnen Schichten von nur 0,05mm bis 0,25mm, vorzugsweise 0,1mm Dicke zu verarbeiten, ergaben Messungen zur Wärmeleitfähigkeit Werte, die um ca. drei Zehnerpotenzen über denen der bisher verwendeten Rilsanbeschichtungen mit einer Dicke von 0,3mm lagen. Mit der erfindungsgemäßen Beschichtung können eine oder mehrere Walzen des Farbwerks einer Druckmaschine versehen werden, jedoch ist es erfahrungsgemäß besonders vorteilhaft, die Farbreibwalzen zu beschichten.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 processing these two elements into comparatively thin layers of only 0.05mm to 0.25mm, preferably 0.1mm thick, measurements of the thermal conductivity resulted in values that are about three orders of magnitude higher than those of the Rilsan coatings used previously a thickness of 0.3mm. One or more rollers of the inking unit of a printing press can be provided with the coating according to the invention, but experience has shown that it is particularly advantageous to coat the inking rollers.
Molybdän ist zusätzlich noch ein sehr korrosionsbeständiger Werkstoff, der insbesondere im chemischen Anlagenbau aufgrund dieser Eigenschaft eingesetzt wird. Da die Walzenkerne in Druckmaschinen im allgemeinen aus Baustählen ohne besonderen Korrosionsschutz bestehen, hat es sich gezeigt, daß die erfindungsgemäße Beschichtung gleichzeitig einen hervorragenden Korrosionsschutz darstellt.Molybdenum is also a very corrosion-resistant material that is used in particular in chemical plant construction due to this property. Since the roller cores in printing machines are generally made of structural steel without special corrosion protection, it has been shown that the coating according to the invention also represents excellent corrosion protection.
Die einzige Figur zeigt stark schematisiert den Aufbau einer Farbwalze 1, deren Walzenkern 2 erfindungsgemäß mit einer Beschichtung 3 der gesamten Ballenfläche belegt ist.The single figure shows a highly schematic structure of an inking roller 1, the
Die erfindungsgemäße Beschichtung 3 ist vorzugsweise im geschliffenen Zustand mit einer Rauhigkeit von Rz ≈ 8µm einzusetzen. Je nach Anwendungsfall kann es vorteilhaft sein, diese Rauhigkeit zu verändern. Die erfindungsgemäße Beschichtung 3 läßt sich ohne weiteres bis auf Rauhigkeiten von Rz = 0,3µm polieren und nach oben hin in jeden praktisch beliebigen Rauhigkeitszustand bringen.The
Die erfindungsgemäße Beschichtung wird vorzugsweise durch thermisches Spritzen, insbesondere Plasmaspritzen, aufgetragen. Weitere für die Herstellung der Beschichtung 3 geeignete Verfahren sind die PVD-Verfahren, incl. Elektronenstrahlbedampfen (EBPVD), die CVD-Verfahren, die plasmaunterstützten CVD-Verfahren, die galvanischen Verfahren, die Diffusionsverfahren aus der Gasphase oder dem Pack, die Sinterverfahren, die Heißisostatpreßverfahren Sprengplattieren und alle Reaktivverfahren, bei denen die erfindungsgemäße Beschichtung durch Abscheiden aus zwei Flüssig- oder Gasphasen entsteht. Eine nachträgliche Versiegelung der erfindungsgemäßen Beschichtung mit einem farbfreundlichen Kunstharz hat sich bei gewünschter, vergleichsweise hoher Rauhigkeit der Beschichtung als zweckmäßig erwiesen. Es wird unter anderem auf diese Art und Weise vermieden, daß Farbreste in Kavernen, bzw. anderen Poren der Beschichtung gehalten werden.The coating according to the invention is preferably applied by thermal spraying, in particular plasma spraying. Other processes suitable for producing the
Claims (21)
dadurch gekennzeichnet, daß
eine Beschichtung (3) des Walzenkerns (2) vorgesehen ist, die aus mindestens einem der Elemente Molybdän oder Wolfram zumindest zu einem Legierungsanteil von 50% und einem entsprechenden Anteil von mit Molybdän und/oder Wolfram legierungshähigen Elementen besteht.Printing machine roller, in particular ink roller (1),
characterized in that
a coating (3) of the roller core (2) is provided, which consists of at least one of the elements molybdenum or tungsten, at least to an alloy fraction of 50% and a corresponding proportion of elements alloyable with molybdenum and / or tungsten.
dadurch gekennzeichnet, daß
die Beschichtung (3) aus 50% Molybdän und 50% Wolfram besteht.Printing machine roller according to claim 1,
characterized in that
the coating (3) consists of 50% molybdenum and 50% tungsten.
dadurch gekennzeichnet, daß
die Beschichtung (3) vollständig aus Molybdän besteht.Printing machine roller according to claim 1,
characterized in that
the coating (3) consists entirely of molybdenum.
dadurch gekennzeichnet, daß
die Beschichtung (3) vollständig aus Wolfram besteht.Printing machine roller according to claim 1,
characterized in that
the coating (3) consists entirely of tungsten.
dadurch gekennzeichnet, daß
diese als Farbreibwalze verwendet wird.Printing machine roller according to one of the preceding claims,
characterized in that
this is used as an inking roller.
dadurch gekennzeichnet, daß
die Beschichtung (3) durch thermisches Spritzen aufgetragen ist.Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is applied by thermal spraying.
dadurch gekennzeichnet, daß
die Beschichtung (3) eine Dicke von 0,05mm bis 0,25mm, vorzugsweise 0,1mm aufweist.Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) has a thickness of 0.05 mm to 0.25 mm, preferably 0.1 mm.
dadurch gekennzeichnet, daß
die Beschichtung (3) eine Oberflächenrauhigkeit von Rz ≦ 10µm, vorzugsweise Rz = 8µm aufweist.Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) has a surface roughness of R z ≦ 10 µm, preferably R z = 8 µm.
dadurch gekennzeichnet, daß
die Beschichtung (3) eine PVD-Schicht ist (Physical Vapour Depopsition).Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is a PVD layer (Physical Vapor Depopsition).
dadurch gekennzeichnet, daß
die Beschichtung (3) eine EBPVD-Schicht ist (Elektronenstrahlbedampfen).Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is an EBPVD layer (electron beam vapor deposition).
dadurch gekennzeichnet, daß
die Beschichtung (3) eine CVD-Schicht (Chemical Vapour Deposition) ist.Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is a CVD layer (Chemical Vapor Deposition).
dadurch gekennzeichnet, daß
die Beschichtung (3) eine Plasma-CVD-Schicht ist (plasmaunterstütztes CVD).Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is a plasma CVD layer (plasma-assisted CVD).
dadurch gekennzeichnet, daß
die Beschichtung (3) durch ein galvanisches Verfahren aufgetragen ist.Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is applied by a galvanic process.
dadurch gekennzeichnet, daß
die Beschichtung (3) durch ein Diffusionsbeschichtungsverfahren aufgetragen ist.Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is applied by a diffusion coating process.
dadurch gekennzeichnet, daß
die Beschichtung (3) durch ein Sinterverfahren aufgetragen ist.Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is applied by a sintering process.
dadurch gekennzeichnet, daß
die Beschichtung (3) durch ein Heißisostatpreßverfahren (Hippen) aufgetragen ist.Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is applied by a hot isostatic pressing process (hipping).
dadurch gekennzeichnet, daß
die Beschichtung (3) durch Sprengplattieren aufgetragen ist.Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is applied by explosive plating.
dadurch gekennzeichnet, daß
die Beschichtung (3) durch ein Reaktivverfahren aufgetragen ist, bei dem durch reaktive Umwandlung aus entweder zwei Flüssigphasen oder zwei Gasphasen die Beschichtung (3) entsteht.Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is applied by a reactive process in which the coating (3) is formed by reactive conversion from either two liquid phases or two gas phases.
dadurch gekennzeichnet, daß
die Oberfläche der Beschichtung (3) nach dem Beschichtungsvorgang insbesondere durch Schleifen und Polieren geglättet ist.Printing machine roller according to one of the preceding claims,
characterized in that
the surface of the coating (3) is smoothed after the coating process, in particular by grinding and polishing.
dadurch gekennzeichnet, daß
die Beschichtung mit einem porenverschließenden, farbfreundlichen Mittel versiegelt ist.Printing machine roller according to one of the preceding claims,
characterized in that
the coating is sealed with a pore-closing, color-friendly agent.
dadurch gekennzeichnet, daß
die Beschichtung (3) durch ein schwach saures, reduzierendes Reinigungsmittel, insbesondere stark verdünnte Salzsäure aktiviert ist.Printing machine roller according to one of the preceding claims,
characterized in that
the coating (3) is activated by a weakly acidic, reducing cleaning agent, in particular highly dilute hydrochloric acid.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19509741A DE19509741A1 (en) | 1995-03-17 | 1995-03-17 | Printing machine roller, in particular ink roller |
| DE19509741 | 1995-03-17 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0732206A2 true EP0732206A2 (en) | 1996-09-18 |
| EP0732206A3 EP0732206A3 (en) | 1997-08-27 |
| EP0732206B1 EP0732206B1 (en) | 1999-12-22 |
Family
ID=7756972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96103727A Expired - Lifetime EP0732206B1 (en) | 1995-03-17 | 1996-03-09 | Printing press roller with an ink-receptive coating |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0732206B1 (en) |
| DE (2) | DE19509741A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2757447A1 (en) * | 1996-12-21 | 1998-06-26 | Roland Man Druckmasch | PRINTING MACHINE ROLL COMPRISING A COATING, RECEPTIVE FOR INK, LOCATED ON THE SURFACE OF THE HEART OF THE ROLL, IN PARTICULAR AN INK ROLL |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2914255A1 (en) * | 1978-05-26 | 1979-11-29 | Polygraph Leipzig | SINGLE OR MULTI-LAYER COAT FOR CURVED CYLINDERS |
| DE3316348A1 (en) * | 1983-05-05 | 1984-11-08 | PTG Plasma-Oberflächentechnik GmbH, 7240 Horb | Process for the sealing of a porous coating |
| DE3608286A1 (en) * | 1985-04-03 | 1986-10-09 | Winfried 7758 Meersburg Heinzel | Method for the surface treatment of a printing machine cylinder, a printing machine cylinder and the use thereof |
| WO1986007309A1 (en) * | 1985-06-14 | 1986-12-18 | Uddeholm Strip Steel Aktiebolag | Wear resistant doctor blade |
| US4986181A (en) * | 1987-05-27 | 1991-01-22 | Kubota Ltd. | Rollers for a lithographic ink supplying system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2343283C2 (en) * | 1973-08-28 | 1983-07-14 | Metallurgik GmbH, 6078 Neu-Isenburg | Application of plasma spraying of oxide ceramic layers as well as adhesive layers on printing rollers and printing plates |
-
1995
- 1995-03-17 DE DE19509741A patent/DE19509741A1/en not_active Withdrawn
-
1996
- 1996-03-09 EP EP96103727A patent/EP0732206B1/en not_active Expired - Lifetime
- 1996-03-09 DE DE59603943T patent/DE59603943D1/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2914255A1 (en) * | 1978-05-26 | 1979-11-29 | Polygraph Leipzig | SINGLE OR MULTI-LAYER COAT FOR CURVED CYLINDERS |
| DE3316348A1 (en) * | 1983-05-05 | 1984-11-08 | PTG Plasma-Oberflächentechnik GmbH, 7240 Horb | Process for the sealing of a porous coating |
| DE3608286A1 (en) * | 1985-04-03 | 1986-10-09 | Winfried 7758 Meersburg Heinzel | Method for the surface treatment of a printing machine cylinder, a printing machine cylinder and the use thereof |
| WO1986007309A1 (en) * | 1985-06-14 | 1986-12-18 | Uddeholm Strip Steel Aktiebolag | Wear resistant doctor blade |
| US4986181A (en) * | 1987-05-27 | 1991-01-22 | Kubota Ltd. | Rollers for a lithographic ink supplying system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2757447A1 (en) * | 1996-12-21 | 1998-06-26 | Roland Man Druckmasch | PRINTING MACHINE ROLL COMPRISING A COATING, RECEPTIVE FOR INK, LOCATED ON THE SURFACE OF THE HEART OF THE ROLL, IN PARTICULAR AN INK ROLL |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0732206A3 (en) | 1997-08-27 |
| EP0732206B1 (en) | 1999-12-22 |
| DE19509741A1 (en) | 1996-09-19 |
| DE59603943D1 (en) | 2000-01-27 |
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