EP1126975B1 - Method of applying ink - Google Patents
Method of applying ink Download PDFInfo
- Publication number
- EP1126975B1 EP1126975B1 EP00965921A EP00965921A EP1126975B1 EP 1126975 B1 EP1126975 B1 EP 1126975B1 EP 00965921 A EP00965921 A EP 00965921A EP 00965921 A EP00965921 A EP 00965921A EP 1126975 B1 EP1126975 B1 EP 1126975B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ink
- roller
- inking roller
- printing
- inking
- 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
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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
- B41F31/22—Inking arrangements or devices for inking from interior of cylinder
-
- 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
Definitions
- Known inking rollers for rotary printing machines can be designed as so-called anilox rollers, as they are known from the EP 0 287 002 are known.
- the lateral surface of this known inking roller is provided with a plurality of depressions, called cups, provided as color storage arrangements for receiving serve the color that is supplied from the outside via a chambered doctor blade system.
- anilox roller which serves as a paint roller, is from the EP 0 764 524 known.
- the anilox roller is supplied with color from outside via a dyeing system.
- a porous jacket tube as in the case of EP 0 559 076 A1 , is a major obstacle to a color passage, especially with thick paint.
- the inking unit should have a large ink storage capacity in order to transfer a uniform and streak-free ink film to the printing surface, in particular the printing plate or printing plate.
- a reaction to changes in settings should be made as quickly as possible in order to avoid a waste of waste.
- the higher the viscosity of the paint the more elaborate are the inking units. Low-viscosity inks can still use “short" inking units, while high-viscosity inks require "long” inks.
- the object according to the invention is achieved in that the jacket surface is supplied with the highly viscous ink from the interior of the inking roller over a plurality of passages, and in that in the converging contact region between the application or printing surface and the inking roller in the area of the jacket surface, in particular by or printing surface residual ink is pressed inwards to the passages and to the cavity.
- a particularly advantageous embodiment provides a method for applying highly viscous ink in an offset printing press from a paint roller with a completely filled by high-viscosity paint and under pressure Cavity on a job or printing surface, wherein stored on the outer surface of the ink roller color and taken in a diverging contact area of ink roller and application or printing surface by the application or printing surface highly viscous color of the lateral surface, and wherein the lateral surface of the highly viscous color is supplied from the interior of the inking roller through a plurality of passages, as well as pressed in the converging contact area between the application or printing surface and ink roller in the region of the lateral surface color over the passages inwardly back to the cavity.
- FIG. 1 An inking system in the form of an inking unit for a printing press, in particular in the form of an offset printing machine Fig. 1 has - seen in the drawing from left to right - an inking roller 1, which is in contact with an applicator roller 2, which in turn rolls relative to a printing form cylinder 3. On the applicator roll 2 are several, in Fig. 1 two, significantly smaller in diameter traction rollers 4 provided.
- the inking roller 1 is designed as a hollow cylinder and rotatably supported at its opposite end regions by means of corresponding bearings about a rotation axis 12. Inside the ink roller 1 thus a rotationally symmetric cavity 9 is provided.
- a lateral surface 5 of the inking roller 1 is uniformly distributed over the circumference and the entire width of the inking roller 1 a plurality of passages in the form of very small through holes 6 are provided which connect the outside of the lateral surface 5 radially with the cavity in the interior of the inking roller 1.
- a supply device 10 is shown only partially provided to introduce the color into the cavity 9. Since the illustrated rotary printing press is, in particular, an offset printing press, the feeder 10 supplies a highly viscous ink.
- the feeder 10 is assigned in a manner not shown, a pressure control, by which the ink is fed into the cavity 9 under pressure, wherein the pressure in the cavity 9 between 0 and 10 bar is adjustable or variable.
- the feed device has a coaxial with the axis of rotation 12 in the cavity 9 projecting supply tube, which is positioned in a front-side closing part of the ink roller 1. Opposite the cavity 9 is closed by another unspecified frontal closing part. The two closing parts simultaneously serve to support the inking roller.
- the pressure control may also be supplemented by a control electronics to achieve control in addition to a controller.
- a control electronics to achieve control in addition to a controller.
- Such pressure controls are known in principle.
- a multi-layer mesh cover 7, 8 is applied on the lateral surface 5 of the ink roller 1.
- the power reference in the illustrated embodiment five layers, wherein in the Fig. 1 and 2 for reasons of clarity, only two layers are shown.
- the mesh sizes of the radially superimposed layers of the mesh cover 7, 8 reduce radially from the inside to the outside, so that the mesh cover with the narrowest mesh defines the outer surface of the ink roller and thus the mesh cover 7, 8.
- the outermost layer 8 of the net cover 7, 8 should have small meshes so that no traces of the net threads can be recognized by the pressure.
- the mesh sizes Ma are 50 ⁇ m or smaller.
- the distances of the passages i. the through holes, each other and the diameter of the passages are about 50 microns or less, can be dispensed with an additional power supply.
- the outer surface of the inking roller is used directly for ink transfer to the applicator roll or the printing forme.
- the radially innermost mesh cover 7 has over the outer mesh Ma a relatively large mesh size Mi, which may also be greater than the diameter of the through holes 6, as based on the Fig. 3 is recognizable.
- the mesh cover 7, 8 covers the lateral surface 5 of the ink roller 1 including all through holes 6 completely.
- the network reference 7, 8 serves as a color memory arrangement in the context of the invention.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Liquid Crystal (AREA)
- Coloring (AREA)
- Impression-Transfer Materials And Handling Thereof (AREA)
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Auftragen von Farbe bei einer Druckmaschine von einer Farbwalze auf eine Auftrags- oder Druckfläche, wobei auf der Mantelfläche der Farbwalze Farbe gespeichert wird.The invention relates to a method for applying color in a printing press from an inking roller to an application or printing surface, wherein color is stored on the outer surface of the inking roller.
Bekannte Farbauftragssysteme für eine Druckmaschine, insbesondere für eine Offset-Druckmaschine, weisen mehrere Walzen wie insbesondere Farb-, Auftrags-, Reib-, Duktorwalzen usw. auf. wobei die vorliegende Erfindung im Speziellen eine Farbwalze eines solchen Farbauftragssystems betrifft. Derartige Farbwalzen dienen zum Auftragen der Farbe auf eine Auftrags-oder Druckfläche, die entweder durch eine Auftragswalze oder direkt durch eine Druckform gebildet sein kann.Known inking systems for a printing press, in particular for an offset printing press, have a plurality of rollers, in particular color, applicator, friction, ductor rollers, etc. in particular, the present invention relates to a paint roller of such a paint application system. Such inking rollers are used to apply the ink to a job or printing surface, which may be formed either by an applicator roll or directly by a printing plate.
Bekannte Farbwalzen für Rotationsdruckmaschinen können als sogenannte Rasterwalzen ausgebildet sein, wie sie aus der
Eine weitere Rasterwalze, die als Farbwalze dient, ist aus der
Eine weitere Farbwalze ist aus der
Beim Zeitungsdruck wird beispielsweise eine dünnflüssige Farbe eingesetzt, wobei eine "vollkommene Aniloxwalze" eingesetzt wird. Bei allen oben genannten Farbwalzen gibt es eine Rakelfunktion. Es ist aber unmöglich, eine dicke Farbe abzurakeln, wenn die relative Geschwindigkeit zwischen einem Rakel und der abgerakelten Fläche groß ist. Deswegen kann dicke Farbe insbesondere nur bei einer "langsamen" Duktorwalze abgerakelt werden.Newspaper printing, for example, employs a low viscosity paint, using a "perfect anilox roll". All of the above ink rollers have a squeegee function. However, it is impossible to roll off a thick paint when the relative speed between a squeegee and the doctored surface is large. Therefore, thick paint can be doctored especially only with a "slow" ductor roller.
Ein poröses Mantelrohr, wie z.B. im Falle der
Bei allen bekannten Farbauftragssystemen erfordert die Zuführung der Farbe einen hohen konstruktiven Aufwand. Infolge enger Vorgaben bezüglich Farbmenge und Änderung dieser Farbmenge, Kontinuität des Farbauftrags auf die Druckform und weiterer Forderungen sind die bekannten Farbauftragssysteme relativ kompliziert aufgebaut. Dies gilt insbesondere auch für Offset-Druckmaschinen. Da insbesondere Farbauftragssysteme von Offset-Druckmaschinen eine Vielzahl von Walzen aufweisen, die aufeinander abrollen und demzufolge eine hohe Reibungswärme entwickeln, müssen Farbwerktemperieranlagen eingesetzt werden, um eine konstante Temperatur der Farbe und der Farb-Wasser-Balance aufrechterhalten zu können, die die konstanten Eigenschaften der Farbe (Druckfarbe) gewährleistet. Um eine Unabhängigkeit zwischen Drucksujet und Farbschichtdicke zu erreichen, wird zudem eine elektronische Farbsteuerung, vorzugsweise eine Computersteuerung, benötigt, die insbesondere nach einem Druckformwechsel ein schnelles Weiterdrucken erlaubt. Bei bekannten Farbwerken (Farbauftragssystemen) müssen zudem Kompromisse eingegangen werden. So soll das Farbwerk beispielsweise eine große Farbspeicherkapazität aufweisen, um einen gleichmäßigen und streifenfreien Farbfilm auf die Druckfläche, insbesondere die Druckform oder Druckplatte, zu übertragen. Andererseits soll so schnell wie möglich eine Reaktion auf Einstellungsänderungen erfolgen, um einen Makulaturabfall zu vermeiden. Generell lässt sich sagen, je höher die Viskosität der Farbe, desto aufwendiger sind die Farbwerke gestaltet. So können bei niederviskosen Farben noch "kurze" Farbwerke eingesetzt werden, bei hochviskosen Farben hingegen sind "lange" Farbwerke notwendig.In all known inking systems, the supply of color requires a high design effort. As a result of strict specifications regarding the amount of ink and change in this amount of ink, continuity of ink application to the printing plate and other requirements, the known inking systems are relatively complicated. This is especially true for offset printing machines. As in particular paint application systems from offset printing machines have a plurality of rollers that roll on each other and therefore develop a high frictional heat, Farbwerktemperieranlagen must be used to maintain a constant temperature of the color and the color-water balance, the constant properties of the color (ink ) guaranteed. In order to achieve independence between Drucksujet and ink layer thickness, also an electronic color control, preferably a computer control, is required, which allows in particular after a printing form change a fast further printing. In the case of known inking units (inking systems), compromises must also be made. For example, the inking unit should have a large ink storage capacity in order to transfer a uniform and streak-free ink film to the printing surface, in particular the printing plate or printing plate. On the other hand, a reaction to changes in settings should be made as quickly as possible in order to avoid a waste of waste. In general, the higher the viscosity of the paint, the more elaborate are the inking units. Low-viscosity inks can still use "short" inking units, while high-viscosity inks require "long" inks.
Demzufolge ist es Aufgabe der Erfindung, ein Verfahren der eingangs genannten Art zu schaffen, das bei äußerst einfachem Aufbau eine außergewöhnlich gute Druckqualität gewährleistet.Accordingly, it is an object of the invention to provide a method of the type mentioned, which ensures exceptionally good print quality with an extremely simple structure.
Die erfindungsgemäße Aufgabe wird dadurch gelöst, dass der Mantelfläche die hochviskose Farbe vom Inneren der Farbwalze über eine Vielzahl von Durchtritten hindurch zugeführt wird, und dass im zusammenlaufenden Berührungsbereich zwischen Auftrags- oder Druckfläche und Farbwalze im Bereich der Mantelfläche befindliche Farbe insbesondere durch auf der Auftrags- oder Druckfläche befindliche Restfarbe nach innen zu den Durchtritten und zu dem Hohlraum gedrückt wird.The object according to the invention is achieved in that the jacket surface is supplied with the highly viscous ink from the interior of the inking roller over a plurality of passages, and in that in the converging contact region between the application or printing surface and the inking roller in the area of the jacket surface, in particular by or printing surface residual ink is pressed inwards to the passages and to the cavity.
Eine besonders vorteilhafte Ausgestaltung sieht ein Verfahren zum Auftragen von hochviskoser Farbe bei einer Offset-Druckmaschine von einer Farbwalze mit einem durch hochviskose Farbe vollständig gefüllten und unter Überdruck stehenden Hohlraum auf eine Auftrags- oder Druckfläche vor, wobei auf der Mantelfläche der Farbwalze Farbe gespeichert und in einem auseinanderlaufenden Berührungsbereich von Farbwalze und Auftrags- oder Druckfläche durch die Auftrags- oder Druckfläche hochviskose Farbe von der Mantelfläche mitgenommen wird, und wobei der Mantelfläche die hochviskose Farbe vom Inneren der Farbwalze über eine Vielzahl von Durchtritten hindurch zugeführt wird, sowie im zusammenlaufenden Berührungsbereich zwischen Auftrags- oder Druckfläche und Farbwalze im Bereich der Mantelfläche befindliche Farbe über die Durchtritte hindurch nach innen zurück zu dem Hohlraum gedrückt wird.A particularly advantageous embodiment provides a method for applying highly viscous ink in an offset printing press from a paint roller with a completely filled by high-viscosity paint and under pressure Cavity on a job or printing surface, wherein stored on the outer surface of the ink roller color and taken in a diverging contact area of ink roller and application or printing surface by the application or printing surface highly viscous color of the lateral surface, and wherein the lateral surface of the highly viscous color is supplied from the interior of the inking roller through a plurality of passages, as well as pressed in the converging contact area between the application or printing surface and ink roller in the region of the lateral surface color over the passages inwardly back to the cavity.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung, das anhand der Zeichnungen dargestellt ist.
- Fig. 1
- zeigt eine schematische Seitenansicht - in teilweise geschnittener Darstellung - eines Teiles eines Farbauftragssystems in Form eines Farbwerkes für eine Ausführungsform einer erfindungsgemäßen Druckmaschine, insbesondere einer Offset-Druckmaschine, mit einer Ausführungsform einer erfindungsgemäßen Farbwalze,
- Fig. 2
- schematisch eine teilweise aufgebrochene Draufsicht auf die Farbwalze nach
Fig. 1 , und - Fig. 3
- in vergrößerter Schnittdarstellung den Ausschnitt im Berührungsbereich zwischen Farbwalze und Auftragswalze nach
Fig. 1 .
- Fig. 1
- shows a schematic side view - in partial sectional view - of a part of an inking system in the form of an inking unit for an embodiment of a printing machine according to the invention, in particular an offset printing machine, with an embodiment of a paint roller according to the invention,
- Fig. 2
- schematically a partially broken plan view of the ink roller after
Fig. 1 , and - Fig. 3
- in enlarged sectional view the cutout in the contact area between the inking roller and the applicator roll
Fig. 1 ,
Ein Farbauftragssystem in Form eines Farbwerkes für eine Druckmaschine insbesondere in Form einer Offset-Druckmaschine nach
In einer Mantelfläche 5 der Farbwalze 1 ist gleichmäßig über den Umfang und die gesamte Breite der Farbwalze 1 verteilt eine Vielzahl von Durchtritten in Form von sehr kleinen Durchgangsbohrungen 6 vorgesehen, die die Außenseite der Mantelfläche 5 radial mit dem Hohlraum im Inneren der Farbwalze 1 verbinden.In a
Wie anhand der
Auf der Mantelfläche 5 der Farbwalze 1 ist ein mehrlagiger Netzbezug 7, 8 aufgebracht. Wie anhand der
Falls die Abstände der Durchtritte, d.h. der Durchgangsbohrungen, zueinander und die Durchmesser der Durchtritte bei etwa 50 µm oder darunter liegen, kann auf einen zusätzlichen Netzbezug verzichtet werden. In diesem Fall dient direkt die Mantelfläche der Farbwalze zur Farbübertragung auf die Auftragswalze oder die Druckform.If the distances of the passages, i. the through holes, each other and the diameter of the passages are about 50 microns or less, can be dispensed with an additional power supply. In this case, the outer surface of the inking roller is used directly for ink transfer to the applicator roll or the printing forme.
Der radial innerste Netzbezug 7 weist gegenüber der äußeren Maschenweite Ma eine relativ große Maschenweite Mi auf, die auch größer sein kann als der Durchmesser der Durchgangsbohrungen 6, wie anhand der
Die Funktion des Farbauftrages von der Farbwalze 1 zur Auftragswalze 2 ist nun wie folgt:The function of the ink application from the inking
Durch den Druck und die Zentrifugalkräfte aufgrund der Rotation der Farbwalze im Hohlraum 9 wird die Farbe über den gesamten Umfang der Farbwalze 1 gleichmäßig durch die Durchgangsbohrungen 6 hindurch und in den Netzbezug 7, 8 gedrückt. Somit befindet sich im Netzbezug eine etwa gleichmäßig hohe Farbschicht. In Folge der Adhäsionskräfte wird im Endsektor C des Berührungsbereiches A, B, C entsprechende Farbmenge von der Auftragswalze 2 mitgenommen. Von der Auftragswalze 2 nicht mitgenommene Farbe bleibt über einen Umlauf der Farbwalze 1 bis in Sektor A des Berührungsbereiches außen auf dem Netzbezug. Beim Zusammenlaufen von Auftragswalze 2 und Farbwalze 1 im Sektor A wird in einfacher Weise gemäß den Pfeildarstellungen der Farbe nach
Bei anderen Druckmaschinen sind anstelle einer Auftragswalze andere Arten von Auftrags- oder Druckflächen, insbesondere eine Druckform, vorgesehen, die in entsprechender Weise die Farbe von der Farbwalze abziehen.In other printing machines, other types of application or printing surfaces, in particular a printing plate, are provided instead of an applicator roll, which in a corresponding manner remove the ink from the inking roller.
Claims (1)
- A method for applying highly viscous ink using an offset printing machine from an inking roller (1) having a cavity (9) completely filled with highly viscous ink and overpressurized to an application or printing surface, wherein ink is stored on a lateral surface of the inking roller (1) and highly viscous ink is entrained by the lateral surface in a diverging contact zone of inking roller (1) and application or printing surface, and wherein the lateral surface is supplied with highly viscous ink from the interior of the inking roller (1) via a plurality of through holes (6), as well as ink present in the vicinity of the lateral surface in the converging contact zone between application or printing surface and inking roller (1) being forced through the through holes (6) back to the inside of the cavity (9).
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19942146 | 1999-09-03 | ||
DE19942146 | 1999-09-03 | ||
DE19957453A DE19957453C1 (en) | 1999-09-03 | 1999-11-29 | Application method for high viscosity ink in offset printing machine has ink supplied to mantle surface of ink roller via ink channels communicating with hollow interior of ink roller |
DE19957453 | 1999-11-29 | ||
PCT/EP2000/008651 WO2001017778A1 (en) | 1999-09-03 | 2000-09-04 | Inking roller and method of applying ink |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1126975A1 EP1126975A1 (en) | 2001-08-29 |
EP1126975B1 true EP1126975B1 (en) | 2008-03-05 |
Family
ID=26054820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00965921A Expired - Lifetime EP1126975B1 (en) | 1999-09-03 | 2000-09-04 | Method of applying ink |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1126975B1 (en) |
JP (1) | JP2003508276A (en) |
AT (1) | ATE388017T1 (en) |
DE (1) | DE50015019D1 (en) |
WO (1) | WO2001017778A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5324155B2 (en) * | 2007-08-06 | 2013-10-23 | 花王株式会社 | Liquid coating apparatus and method for manufacturing absorbent article |
EP2177191B1 (en) | 2007-08-06 | 2014-01-22 | Kao Corporation | Liquid applicator |
WO2021096484A1 (en) * | 2019-11-11 | 2021-05-20 | Hewlett-Packard Development Company, L.P. | Primer apparatus |
CN115384174A (en) * | 2022-09-21 | 2022-11-25 | 安徽天翔高新特种包装材料集团有限公司 | Ink coating device used for gravure printing machine and convenient to rapidly coat ink |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2319615A (en) * | 1941-04-12 | 1943-05-18 | Cottrell C B & Sons Co | Inking roller for printing presses |
US2546304A (en) * | 1946-03-14 | 1951-03-27 | William C Huebner | Printing element or cylinder |
EP0559076B1 (en) * | 1992-02-29 | 1996-06-05 | KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT | Method and apparatus for supplying ink to ink rollers in rotary printing machine |
JPH08244211A (en) * | 1995-03-14 | 1996-09-24 | Dainippon Printing Co Ltd | Printer |
JP3473797B2 (en) * | 1995-08-08 | 2003-12-08 | 東北リコー株式会社 | Plate cylinder and ink holding member of master and stencil printing machine |
-
2000
- 2000-09-04 WO PCT/EP2000/008651 patent/WO2001017778A1/en active IP Right Grant
- 2000-09-04 DE DE50015019T patent/DE50015019D1/en not_active Expired - Fee Related
- 2000-09-04 JP JP2001521549A patent/JP2003508276A/en active Pending
- 2000-09-04 EP EP00965921A patent/EP1126975B1/en not_active Expired - Lifetime
- 2000-09-04 AT AT00965921T patent/ATE388017T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2001017778A1 (en) | 2001-03-15 |
DE50015019D1 (en) | 2008-04-17 |
JP2003508276A (en) | 2003-03-04 |
EP1126975A1 (en) | 2001-08-29 |
ATE388017T1 (en) | 2008-03-15 |
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