EP0703093B1 - Cylinder for the dampening device of a printing machine - Google Patents
Cylinder for the dampening device of a printing machine Download PDFInfo
- Publication number
- EP0703093B1 EP0703093B1 EP95112997A EP95112997A EP0703093B1 EP 0703093 B1 EP0703093 B1 EP 0703093B1 EP 95112997 A EP95112997 A EP 95112997A EP 95112997 A EP95112997 A EP 95112997A EP 0703093 B1 EP0703093 B1 EP 0703093B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- layer
- dampening
- coating
- outer coating
- 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
Links
Images
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
- B41N2207/04—Intermediate 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
Definitions
- the invention relates to a roller for a dampening system a printing press that can be used universally.
- she is for example as a dampening roller, metering roller or dampening roller usable.
- dampening rollers There are a variety of materials, coatings and surface structures known for dampening rollers. Dampers essentially show Rolls made of steel, rubber or textile covers. Partially the wettability of the roll surface is only possible with the help of hydrophilizing agents possible. Furthermore, from the EP 0 400 621 A2 discloses a dampening roller, the base body of which Ceramic / metal carbide is coated. Using special procedures (Laser / radioactive radiation) are deepened in the Coating introduced to increase the dampening solution guidance. A disadvantage of this type of roller is that when reducing or Elimination of alcohol as a dampening solution additive the wettability of the Rolls (dampening solution guide) decreases. Because stable dampening solution guidance color fluctuations can no longer be guaranteed (the color / water balance is disturbed) and registration difficulties.
- a further dampening roller is known from DE 4 229 700 A1, which should have good hydrophilic properties.
- the disadvantage is here that the silicon-metal surface has pores and must be sealed to avoid printing disadvantages, which is a complex manufacture.
- a roller as a developing roller is in a toner processing Copier known.
- the roller has an outer coating, which consists of TiCN, as well as a rough surface.
- the roughness is for the amount of transported toner is important because otherwise the image quality will deteriorate.
- a roller is functionally connected to a doctor blade known anilox roller for ink metering in a printing unit.
- the roller has a multi-layer structure and is essentially made of one material temperature-dependent shape memory.
- the grid structure of the roller has additionally a wear protection layer, which consists of TiN, TiAlN or TiCN.
- the object of the invention is to provide a roller for a dampening unit develop, whose shell surface with a high wettability Has water or dampening solution. This object is achieved according to the invention solved according to the characteristic of the main claim. Training result from the subclaims.
- a dampening roller of this type has a coating that consists of TiALN (titanium aluminum nitride) or TiCN (titanium carbonitride) and has a rough surface.
- This coating according to the invention ensures an excellent hydrophilic property the roller.
- a coating of this type is used to guide the dampening solution improved and the print quality increased. It will be a achieved a sufficiently thick and even dampening solution film, the proportion of alcohol is eliminated or only to a small extent ( ⁇ 6%) is required. The addition of alcohol or too Alcohol substitutes for dampening solutions can therefore be very low remain or are completely eliminated.
- Intermediate layer can be applied. This intermediate layer exists preferably made of matt chrome.
- a roller 1 is shown, the two roll neck 2nd has and a base body 3, the concentrically arranged Layers 4, 5 carries.
- 2 is a cross section through the Base body 3 recognizable, on which an intermediate layer 4 and concentric for this purpose the outer layer 5 is arranged. 3 the outer layer 5 is directly concentric on the base body 3 arranged.
- the intermediate layer is for the arrangement according to FIG. 2 4 as a matt chrome layer with a roughness of Rz 2.0 to 10.0, a hardness of about 900 HV and a layer density of about> 0.05 mm applied.
- the outer coating 5 is a PVD hard material coating, consisting of TiALN or TiCN with a hardness of about 1500 to 3500 HV and a layer thickness of Arranged 2 to 10 ⁇ m.
- the outer layer 5 TiALN or TiCN directly (without intermediate layer 4) concentrically on the Base body 3 attached with a hardness of 1500 - 3500 HV and a layer thickness of 2 - 10 ⁇ m.
- the present coating exhibits very good wettability Fountain solution guide. Alcohol or alcohol substitutes are reduced to a small percentage or can be done entirely omitted. This has the advantage that it is harmful to health and the environment Medium reduced to an acceptable level or completely can be omitted.
- the ink / fountain solution balance can can be set faster and remains during the printing process stable
Landscapes
- Rotary Presses (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
Die Erfindung betrifft eine Walze für ein Feuchtwerk einer Druckmaschine, welche universell einsetzbar ist. Sie ist beispielsweise als Feuchtduktor, Dosierwalze oder Feuchtreiberwalze verwendbar.The invention relates to a roller for a dampening system a printing press that can be used universally. she is for example as a dampening roller, metering roller or dampening roller usable.
Es sind eine Vielzahl Von Werkstoffen, Überzüge bzw. Oberflächenstrukturen für Feuchtwalzen bekannt. Feuchtwerke weisen im wesentlichen Walzen aus Stahl, Gummi bzw. textilen Bezügen auf. Teilweise wird die Benetzbarkeit der Walzenoberfläche erst durch Zuhilfenahme von Hydrophilierungsmitteln möglich. Darüberhinaus ist aus der EP 0 400 621 A2 eine feuchtwalze bekannt, deren Grundkörper mit Keramik/Metallkarbiden beschichtet ist. Mittels spezieller Verfahren (Laser/radioaktiver Strahlung) werden Vertiefungen in die Beschichtung eingebracht um die Feuchtmittelführung zu erhöhen. Nachteilig bei dieser Walzenart ist es, daß bei Reduzierung bzw. Wegfall von Alkohol als Feuchtmittelzusatz die Benetzbarkeit der Walzen (Feuchtmittelführung) abnimmt. Da eine stabile feuchtmittelführung nicht mehr gewährleistet ist, entstehen Farbschwankungen (das Farb-/Wassergleichgewicht wird gestört) und Passerschwierigkeiten.There are a variety of materials, coatings and surface structures known for dampening rollers. Dampers essentially show Rolls made of steel, rubber or textile covers. Partially the wettability of the roll surface is only possible with the help of hydrophilizing agents possible. Furthermore, from the EP 0 400 621 A2 discloses a dampening roller, the base body of which Ceramic / metal carbide is coated. Using special procedures (Laser / radioactive radiation) are deepened in the Coating introduced to increase the dampening solution guidance. A disadvantage of this type of roller is that when reducing or Elimination of alcohol as a dampening solution additive the wettability of the Rolls (dampening solution guide) decreases. Because stable dampening solution guidance color fluctuations can no longer be guaranteed (the color / water balance is disturbed) and registration difficulties.
Aus der DE 4 229 700 A1 ist eine weitere feuchtwerkswalze bekannt,
die gute hydrophile Eigenschaften besitzen soll. Nachteilig ist
hierbei, daß die Silicium-Metall-Oberfläche Poren aufweist und
versiegelt werden muß um drucktechnische Nachteile zu vermeiden,
was eine aufwendige Herstellung darstellt. A further dampening roller is known from
Gemäß der US 4 893 151 ist eine Walze als Entwicklungswalze in einer tonerverarbeitenden Kopiermaschine bekannt. Die Walze besitzt eine äußere Beschichtung, welche aus TiCN besteht, sowie eine rauhe Oberfläche. Die Rauhigkeit ist für die Menge des transportierten Toners wichtig, weil sonst die Bildqualität sich verschlechtert.According to US 4,893,151, a roller as a developing roller is in a toner processing Copier known. The roller has an outer coating, which consists of TiCN, as well as a rough surface. The roughness is for the amount of transported toner is important because otherwise the image quality will deteriorate.
Schließlich ist aus der EP-A 0 428 893 eine Walze als mit einer Rakel in Funktionsverbindung stehende Rasterwalze für die Farbdosierung in einem Druckwerk bekannt. Die Walze ist mehrschichtig aufgebaut und ist im wesentlichen aus einem Werkstoff mit einem temperaturabhängigen Formgedächtnis gebildet. Die Rasterstruktur der Walze besitzt zusätzlich eine Verschleißschutzschicht, die aus TiN, TiAlN oder TiCN besteht. Finally, from EP-A 0 428 893, a roller is functionally connected to a doctor blade known anilox roller for ink metering in a printing unit. The The roller has a multi-layer structure and is essentially made of one material temperature-dependent shape memory. The grid structure of the roller has additionally a wear protection layer, which consists of TiN, TiAlN or TiCN.
Aufgabe der Erfindung ist es, eine Walze für ein Feuchtwerk zu entwickeln, deren Manteloberfläche eine hohe Benetzbarkeit mit Wasser bzw. Feuchtmittel aufweist. Diese Aufgabe wird erfindungsgemäß nach dem Kennzeichen des Hauptanspruches gelöst. Weiterbildungen ergeben sich aus den Unteransprüchen.The object of the invention is to provide a roller for a dampening unit develop, whose shell surface with a high wettability Has water or dampening solution. This object is achieved according to the invention solved according to the characteristic of the main claim. Training result from the subclaims.
Eine Feuchtwalze dieser Art besitzt eine Beschichtung, die aus TiALN (Titanaluminiumnitrid) oder TiCN (Titancarbonitrid) besteht und eine rauhe Oberfläche besitzt. Diese erfindungsgemäße Beschichtung gewährleistet eine ausgezeichnete hydrophile Eigenschaft der Walze. Durch eine Beschichtung dieser Art wird die Feuchtmittelführung verbessert und die Druckqualität erhöht. Es wird ein ausreichend dicker und gleichmäßiger Feuchtmittelfilm erzielt, wobei der Anteil von Alkohol entfällt oder nur in geringem Maße (< 6%) erforderlich ist. Der Zusatz von Alkohol oder auch Alkoholersatzstoffen zum Feuchtmittel kann somit sehr gering bleiben bzw. völlig entfallen. Zur Verbesserung der Haftfähigkeit zwischen Grundkörper und äußeren Beschichtung kann eine Zwischenschicht aufgebracht werden. Diese Zwischenschicht besteht vorzugsweise aus Mattchrom. Die äußere Beschichtung ist vorzugsweise eine PVD-Schicht (PVD = Physical Vapour Deposition).A dampening roller of this type has a coating that consists of TiALN (titanium aluminum nitride) or TiCN (titanium carbonitride) and has a rough surface. This coating according to the invention ensures an excellent hydrophilic property the roller. A coating of this type is used to guide the dampening solution improved and the print quality increased. It will be a achieved a sufficiently thick and even dampening solution film, the proportion of alcohol is eliminated or only to a small extent (<6%) is required. The addition of alcohol or too Alcohol substitutes for dampening solutions can therefore be very low remain or are completely eliminated. To improve the adhesiveness between the base body and the outer coating Intermediate layer can be applied. This intermediate layer exists preferably made of matt chrome. The outer coating is preferably a PVD layer (PVD = Physical Vapor Deposition).
Die Erfindung soll an einem Ausführungsbeispiel näher erläutert werden. Dabei zeigt:
- Fig. 1
- eine Feuchtwalze in schematischer Darstellung,
- Fig. 2 und 3
- den Querschnitt der Feuchtwalze mit dem jeweiligen Schichtaufbau.
- Fig. 1
- a dampening roller in a schematic representation,
- 2 and 3
- the cross section of the dampening roller with the respective layer structure.
In Fig. 1 ist eine Walze 1 dargestellt, die zwei Walzenzapfen 2
aufweist und einen Grundkörper 3, der konzentrisch angeordnete
Schichten 4, 5 trägt. Gemäß Fig. 2 ist ein Querschnitt durch den
Grundkörper 3 erkennbar, auf dem eine Zwischenschicht 4 und konzentrisch
dazu die äußere Schicht 5 angeordnet ist. Gemäß Fig. 3
ist auf dem Grundkörper 3 die äußere Schicht 5 direkt konzentrisch
angeordnet. Für die Anordnung gemäß Fig. 2 ist die Zwischenschicht
4 als Mattchromschicht mit einer Rauhigkeit von Rz 2,0 bis 10,0,
einer Härte von etwa 900 HV und einer Schichtdichte von ca. > 0,05
mm aufgebracht. Die äußere Beschichtung 5 ist als PVD-Hartstoffbeschichtung,
bestehend aus TiALN oder TiCN mit einer Härte von
etwa 1500 bis 3500 HV und einer Schichtdicke von
2 bis 10 µm angeordnet. Gemäß Fig.3 ist die äußere Schicht 5 (TiALN
oder TiCN) direkt (ohne Zwischenschicht 4) konzentrisch auf dem
Grundkörper 3 angebracht mit einer Härte von 1500 - 3500 HV und
einer Schichtdicke von 2 - 10 µm.In Fig. 1, a roller 1 is shown, the two roll neck 2nd
has and a
Die vorliegende Beschichtung weist eine sehr gute Benetzbarkeit zur Feuchtmittelführung auf. Der Alkohol bzw. die Alkoholersatzstoffe werden auf einen geringen Prozentsatz reduziert bzw. können ganz entfallen. Dies hat den Vorteil, daß gesundheits- und umweltschädliche Mittel auf ein unbedenkliches Maß reduziert bzw. vollkommen entfallen können. Das Farb-/Feuchtmittel-Gleichgewicht kann schneller eingestellt werden und bleibt während des Druckporzesse stabil The present coating exhibits very good wettability Fountain solution guide. Alcohol or alcohol substitutes are reduced to a small percentage or can be done entirely omitted. This has the advantage that it is harmful to health and the environment Medium reduced to an acceptable level or completely can be omitted. The ink / fountain solution balance can can be set faster and remains during the printing process stable
- 11
- Walzeroller
- 22nd
- ZapfenCones
- 33rd
- GrundkörperBasic body
- 44th
- ZwischenschichtIntermediate layer
- 55
- äußere Schichtouter layer
Claims (4)
- Roller for a damping unit of a printing press with a one or multi-layer cover arranged on a base body, characterised in that the outer coating (5) of the cover consists of TiAlN or TiCN and has a rough surface.
- Roller according to Claim 1, characterised in that arranged on the base body (3) concentrically is the outer coating (5) consisting of TiAlN or TiCN.
- Roller according to Claims 1 and 2, characterised in that between the outer coating (5) and the base body (3) there is concentrically arranged an intermediate layer (4) consisting of matt chromium.
- Roller according to Claim 1, characterised in that the outer layer (5) has a layer thickness of 2 - 10 µm and a hardness of 1500 - 3500 HV as well as a roughness Rz of 2 - 10 µm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4434181 | 1994-09-24 | ||
| DE4434181 | 1994-09-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0703093A1 EP0703093A1 (en) | 1996-03-27 |
| EP0703093B1 true EP0703093B1 (en) | 1998-04-22 |
Family
ID=6529116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95112997A Expired - Lifetime EP0703093B1 (en) | 1994-09-24 | 1995-08-18 | Cylinder for the dampening device of a printing machine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0703093B1 (en) |
| AT (1) | ATE165281T1 (en) |
| DE (1) | DE59501975D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107206825A (en) * | 2015-04-14 | 2017-09-26 | 株式会社新克 | Gravure cylinder and its manufacture method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA201400883A1 (en) | 2012-02-09 | 2015-01-30 | Коммонвелт Сайентифик Энд Индастриал Рисерч Органайзейшн | SURFACE |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2432576B2 (en) * | 1974-07-06 | 1976-04-15 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | DAMP DRIVERS IN DAMPWORKS |
| DE3503105A1 (en) * | 1985-01-30 | 1986-07-31 | Leybold-Heraeus GmbH, 5000 Köln | METHOD FOR COATING MACHINE PARTS AND TOOLS WITH CARBIDE MATERIAL AND MACHINE PARTS AND TOOLS PRODUCED BY THE METHOD |
| US4893151A (en) * | 1987-11-26 | 1990-01-09 | Kabushiki Kaisha Toshiba | Image developing apparatus |
| US5047116A (en) | 1989-05-31 | 1991-09-10 | Union Carbide Coatings Service Technology Corporation | Method for producing liquid transfer articles |
| DE3938449A1 (en) * | 1989-11-18 | 1991-05-23 | Roland Man Druckmasch | PRINT WORK |
| DE4321183C2 (en) * | 1992-07-09 | 2002-12-12 | Heidelberger Druckmasch Ag | Dampening roller of a printing machine |
| DE4229700C2 (en) | 1992-09-05 | 1997-02-13 | Heidelberger Druckmasch Ag | Dampening roller for a printing machine and process for coating it |
-
1995
- 1995-08-18 DE DE59501975T patent/DE59501975D1/en not_active Expired - Fee Related
- 1995-08-18 EP EP95112997A patent/EP0703093B1/en not_active Expired - Lifetime
- 1995-08-18 AT AT95112997T patent/ATE165281T1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107206825A (en) * | 2015-04-14 | 2017-09-26 | 株式会社新克 | Gravure cylinder and its manufacture method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59501975D1 (en) | 1998-05-28 |
| ATE165281T1 (en) | 1998-05-15 |
| EP0703093A1 (en) | 1996-03-27 |
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