EP1342573B1 - Method and device for ink supply control - Google Patents
Method and device for ink supply control Download PDFInfo
- Publication number
- EP1342573B1 EP1342573B1 EP03004104A EP03004104A EP1342573B1 EP 1342573 B1 EP1342573 B1 EP 1342573B1 EP 03004104 A EP03004104 A EP 03004104A EP 03004104 A EP03004104 A EP 03004104A EP 1342573 B1 EP1342573 B1 EP 1342573B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ink
- roller
- rollers
- roller train
- train
- 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
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000007639 printing Methods 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000007645 offset printing Methods 0.000 claims description 5
- 230000004913 activation Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 description 13
- 238000009826 distribution Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000004040 coloring Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/004—Driving means for ink rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zur Durchführung des Verfahrens zur Farbauftragssteuerung bei einer Bogenoffsetdruckmaschine gemäß dem Oberbegriff von Ansprüchen 1 und 7.The invention relates to a method and a device for carrying out the method for color order control in a sheet-fed offset printing machine according to the preamble of
Bei Bogenoffsetdruckmaschinen erfolg die Farbzufuhr von einem mit einer Farbkastenwalze zusammenwirkenden Farbkasten und Farbdosierelementen aus. Die zonal dosierte Farbe auf der Farbkastenwalze wird über eine Heberwalze an eine erste Reiberwalze übertragen und von dort aus über eine Anzahl Walzen auf die an den Plattenzylinder angestellten Farbauftragswalzen.In sheetfed offset presses, the ink feed from a color box and color metering elements cooperating with an ink fountain roller succeeds. The zonally metered ink on the ink fountain roller is transferred via a lifting roller to a first distributor roller and from there via a number of rollers on the inking rollers applied to the plate cylinder.
Um einen gleichmäßigen Farbschichtdickenauftrag auf die auf den Plattenzylinder aufgespannte Druckform zu erzielen und so einen über die Drucklänge gleichmä-βigen Farbdichteverlauf zu erhalten, sind die in Druckrichtung vorderen und hinteren Farbauftragwalzen durch jeweils einen Walzenstrang verbunden. Ein solches zweisträngiges Farbwerk zeigt beispielsweise die
Bei Drehzahlerhöhungen, insbesondere nach Produktionsunterbrechungen, zeigen die ersten gedruckten Bogen meist eine deutlich sichtbare Überfärbung. Gerade bei Sujets mit höherer Flächendeckung ist dieser Effekt besonders ausgeprägt.With speed increases, especially after production interruptions, the first printed sheets usually show a clearly visible over-color. Especially for subjects with higher surface coverage, this effect is particularly pronounced.
Um diesem Effekt entgegen zu wirken wird häufig versucht die Farbzufuhr zu reduzieren, was beispielsweise durch ein Schließen der Farbdosierelemente oder ein Stillsetzen der Heberwalze erfolgen kann. Diese Maßnahmen erfordern aber eine exakt auf den Farbfluss und die Druckgeschwindigkeit abgestimmte Vorlauf zeit, da die Trägheit des Farbwerkes relativ groß ist, d.h. die dadurch bewirkte Farbstromunterbrechung kommt erst nach einigen Maschinenumdrehungen zum Tragen.To counteract this effect is often trying to reduce the ink supply, which can be done for example by closing the Farbdosierelemente or stopping the vibrating roller. However, these measures require a precisely matched to the color flow and the print speed lead time, since the inertia of the inking unit is relatively large, ie caused by the ink flow interruption comes after several revolutions of the engine to fruition.
Farbwerke von Bogenoffsetdruckmaschinen weisen häufig auch sogenannte Farbstromtrennungen auf, durch welche der Walzenzug an einer oder mehreren Stellen unterbrochen werden kann. Dies dient dazu, bei Druckunterbrechungen einen Abbau des Farbschichtdickenprofils bei weiterlaufendem Farbwerk zu verhindern. Bei Druckbeginn werden die Walzen aber wieder aneinander angestellt, so dass der ursprüngliche Farbfluss wieder hergestellt ist.Ink units of sheet-fed offset printing presses often also have so-called ink flow separations, through which the compactor can be interrupted at one or more points. This serves to prevent degradation of the ink layer thickness profile at ongoing inking at printing interruptions. At the beginning of printing, however, the rolls are set back together so that the original color flow is restored.
Aus der
Aus der entsprechenden
Aus der
Aus der
Weiterhin ist aus der
Aus der nachveröffentlichten
Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren sowie eine Vorrichtung zur Durchführung des Verfahrens gemäß dem Oberbegriff des Verfahrens- bzw. Vorrichtungsanspruches derartig weiterzubilden, so dass während der Produktion eine Überfärbung bei Erhöhung der Drehzahl gezielt vermieden werden kann.Object of the present invention is therefore to develop a method and an apparatus for performing the method according to the preamble of the method or device claim such that during production over-coloring can be selectively avoided by increasing the speed.
Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale des Verfahrens- bzw. des Vorrichtungsanspruches. Weiterbildungen der Erfindung ergeben sich aus den entsprechenden Unteransprüchen.This object is achieved by the characterizing features of the method or device claim. Further developments of the invention will become apparent from the corresponding dependent claims.
Gemäß der Erfindung ist vorgesehen, dass in einer Produktionsphase, in der die Druckgeschwindigkeit erhöht wird, der Walzenzug an wenigstens einer Stelle zumindest zeitweise unterbrochen wird. Durch diese Unterbrechung des Walzenzuges kann ein sich beispielsweise durch eine vorherige Druckunterbrechung im Farbwerk aufgebauter Farbüberschuss keine Überfärbung auf den Druckbogen erzeugen.According to the invention, it is provided that in a production phase in which the printing speed is increased, the compactor is interrupted at least at one point at least temporarily becomes. As a result of this interruption of the compactor, a color excess built up, for example, by a previous interruption of printing in the inking unit, can not cause overspray on the printed sheet.
Gemäß einer Weiterbildung der Erfindung ist vorgesehen, dass bei einem die Auftragswalzen über zwei Walzenzüge mit Farbe versorgendem Farbwerk während des Hochfahrens der Drehzahl diese beiden Walzenzüge an zumindest einer Stelle getrennt werden. Diese Trennstelle - im unteren Teil des Farbwerkes ergibt dabei eine sehr gezielte und genau auf die Druckbedingungen abstimmbare Maßnahme zur Vermeidung einer Überfärbung.According to one embodiment of the invention, it is provided that in one of the applicator rollers via two compactors with ink supplying inking during startup of the speed these two compactors are separated at least one point. This separation point - in the lower part of the inking unit results in a very targeted and precisely tunable to the pressure conditions measure to avoid over-staining.
Gemäß einer weiteren Ausführungsform der Erfindung ist vorgesehen, dass bei einem die Auftragswalzen über zwei Walzenzügen mit Farbe versorgendem Farbwerk die Farbversorgung der in Druckrichtung vorderen Farbauftragwalzen unverändert bleibt, dagegen die hinteren Farbauftragwalzen während der Hochlaufphase kurzzeitig abgekoppelt werden. Dies entspricht einer kurzzeitigen Umschaltung auf ein sogenanntes vorderlastiges Farbwerk, bei dem die Hauptmenge an zugeführten Farbe auf der ersten bzw. den ersten beiden Farbauftragwalzen (in Drehrichtung Plattenzylinder gesehen) erfolgt. Bevorzugt wird das erfindungsgemäße Verfahren dabei während der Phase des Produktionsstartes angewendet, in der auch die Druckgeschwindigkeit erhöht wird.According to a further embodiment of the invention, it is provided that in one of the applicator rollers on two rollers with ink supplying inking the ink supply of the front in the printing direction inking rollers remains unchanged, however, the rear inking rollers are disconnected briefly during the startup phase. This corresponds to a short-term switching to a so-called front-heavy inking unit, in which the majority of supplied ink on the first or the first two inking rollers (seen in the direction of rotation plate cylinder) takes place. The method according to the invention is preferably used during the production start phase, in which the printing speed is also increased.
Des weiteren erfolgt die Erläuterung von Ausführungsbeispielen der Erfindung anhand der Zeichnungen.Furthermore, the explanation of embodiments of the invention with reference to the drawings.
Es zeigt:
- Fig. 1
- ein Farbwerk einer Bogenoffsetdruckmaschine,
- Fig. 2
- die Walzenzugtrennung in zwei Walzenzügen,
- Fig. 3
- die Ausführungsform des erfindungsgemäßen Verfahrens, bei welchem der hintere Teil der Auftragwalzen mit weniger Farbe versorgt wird, und
- Fig. 4
- eine Steuerung gemäß Erfindung.
- Fig. 1
- an inking unit of a sheet-fed offset printing machine,
- Fig. 2
- roll compactor separation in two compactors,
- Fig. 3
- the embodiment of the method according to the invention, in which the rear part of the applicator rollers is supplied with less color, and
- Fig. 4
- a controller according to the invention.
Ein im Farbflussrichtung gesehen zweiten Reiber 6 spaltet den Farbstrom über zwei nachgeordnete Farbwalzen 7 und 8 in zwei Züge auf. Über die Farbwalze 7 wird Farbe auf den Reiber 10 und die in Richtung des Formzylinders 15 gesehen vorderen Farbauftragwalzen 11 zugeführt. Über eine Walze 8 wird die Farbschicht der Reiberwalze 6 auf eine Brückenwalze 9 und von dieser über die in Drehrichtung des Formzylinders 15 gesehen hinteren Farbauftragwalzen 11 zugeführt. Die letzte Farbauftragwalze 11 erhält dabei über eine Farbwalze 12 Farbe von der vorletzten Farbauftragwalze 11. Mit dem Formzylinder 15 wirkt der Gummituchzylinder 16 zusammen. Mit dem Bezugszeichen 14 ist ein Feuchtwerk angeordnet, welches über eine Brückenwalze 13 mit dem Farbwerk in Kontakt steht.A seen in the direction of color flow
Nach einer ersten Ausführungsform der Erfindung erfolgt ein Auftrennen des Farbstromes durch Aktivieren von abstellbaren Walzen innerhalb des Walzenzuges. Gemäß
Der Steuerung 21 ist dabei ein Signal von der Maschinensteuerung zuführbar, wenn die Druckgeschwindigkeit (Maschinengeschwindigkeit) erhöht wird. Dies in
Die anhand der
- 11
- Farbkastenpaintbox
- 22
- FarbkastenwalzeInk fountain roller
- 33
- Heberwalzevibrator roller
- 44
- Farbwalze (erster Reiber)Ink roller (first driver)
- 55
- Farbwalzeink roller
- 66
- Farbwalze (zweiter Reiber)Ink roller (second driver)
- 77
- Farbwalzeink roller
- 88th
- Farbwalzeink roller
- 99
- Brückenwalzebridge roller
- 1010
- Farbwalze (Reiber)Paint roller (Reiber)
- 1111
- FarbauftragwalzenInking rollers
- 1212
- Farbwalze (Reiber)Paint roller (Reiber)
- 1313
- Brückenwalzebridge roller
- 1414
- Feuchtwerkdampening
- 1515
- Formzylinder (Plattenzylinder)Form cylinder (plate cylinder)
- 1616
- GummituchzylinderBlanket cylinder
- 1717
-
Trennstelle (Farbwalze 7 und 10)Separation point (
ink roller 7 and 10) - 1818
-
Trennstelle (Farbwalze 8 und 9)Separation point (
ink rollers 8 and 9) - 1919
- Stellmittel (Farbwalze 8 - Trennstelle 18)Adjusting means (ink roller 8 - separation point 18)
- 2020
- Stellmittel (Farbwalze 7 - Trennstelle 17)Adjusting means (ink roller 7 - separation point 17)
- 2121
- Steuerungcontrol
Claims (9)
- A method for controlling the ink feed in an inking couple of a sheet-fed offset printing press, wherein ink, via an ink duct roller (2) which interacts with an ink fountain (1) and an ink metering system via a ductor roller (3) is applied to a first vibrator roller (4) and from there via a number of ink rollers (5, 6, 7, 8, 10, 12) which are in contact with one another and form a roller train and one or a plurality of ink form rollers (11) is applied to a print form on a plate cylinder (15) that is in contact with the ink form rollers (11),
characterized in that
in a phase of the production process in which the printing speed is increased, the roller train of the ink rollers (5, 6, 7, 8, 10, 12) at least at one point is at least partially interrupted. - The method according to Claim 1, characterized in that
the interruption of the roller train of the ink rollers (5, 6, 7, 8, 10, 12) takes place in the part of the roller train located at the bottom with respect to the ink form rollers (11). - The method according to Claim 1 or 2, characterized in that
with an inking couple having two roller trains of ink rollers (5, 6, 7, 10) and of ink rollers (5, 6, 8, 12), via which the ink form rollers (11) are supplied with ink, the interruption of the ink flow takes place in both roller trains. - The method according to Claim 1 or 2, characterized in that
with an inking couple having two roller trains of ink rollers (5, 6, 7, 10) and of ink rollers (5, 6, 8, 12), which supply the ink form rollers (11) with ink, the ink flow is interrupted in only one roller train. - The method according to Claim 4, characterized in that
seen in direction of rotation of the plate cylinder (15) the front part of the form rollers (11) is continued to be supplied with ink and the rear part of the form rollers (11) is supplied with correspondingly less ink through separating the corresponding roller train of ink rollers (5, 6, 8, 12). - The method according to any one of the preceding Claims, characterized in that
the separating of the roller train of ink rollers (5, 6, 7, 10, 8, 12) takes place during the phase of the production start and/or during the phase of a new start following a production interruption. - A device for carrying out the method according to Claim 1, with an ink duct roller (2) which interacts with an ink fountain (1) and ink metering systems, with a ductor roller (3) which contacts the ink duct roller (2) and a first vibrator roller (4), and with a number of ink rollers (5, 6, 7, 8, 10, 12) which are in contact with one another and form a roller train and one or a plurality of ink form rollers (11), wherein the roller train at least at one point can be opened up through an actuating means that is in signal contact with a control,
characterized in that
the control (21) can be supplied with a signal reflecting the printing speed and in that through the control (21) upon increasing of the print speeds during the production an activation of the actuating means (19, 20) for generating a separating point (17, 18) in the roller train takes place. - The device according to Claim 7, characterized in that
with two separating points (17, 18) in the roller train both actuating means (19, 20) can be activated through the control (21). - The device according to Claim 7, characterized in that
with two separating points (17, 18) in the roller train merely one actuating means (19, 20) can be activated through the control (21).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10209861 | 2002-03-06 | ||
DE10209861A DE10209861B4 (en) | 2002-03-06 | 2002-03-06 | Method and apparatus for ink supply control |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1342573A2 EP1342573A2 (en) | 2003-09-10 |
EP1342573A3 EP1342573A3 (en) | 2007-02-28 |
EP1342573B1 true EP1342573B1 (en) | 2011-08-24 |
Family
ID=27740658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03004104A Expired - Lifetime EP1342573B1 (en) | 2002-03-06 | 2003-02-26 | Method and device for ink supply control |
Country Status (5)
Country | Link |
---|---|
US (1) | US6712002B2 (en) |
EP (1) | EP1342573B1 (en) |
JP (1) | JP2003251787A (en) |
AT (1) | ATE521476T1 (en) |
DE (1) | DE10209861B4 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004022701B4 (en) * | 2004-05-05 | 2015-09-17 | Koenig & Bauer Aktiengesellschaft | Method for operating an inking unit of a rotary printing machine |
JP2007152822A (en) * | 2005-12-07 | 2007-06-21 | Komori Corp | Method and device for switching ink carrying passage of ink device in printer |
DE102008009889A1 (en) * | 2008-02-19 | 2009-08-20 | Manroland Ag | Process for coloring a printing form in a processing machine |
DE102008010803A1 (en) * | 2008-02-23 | 2009-08-27 | Manroland Ag | Process for coloring a printing form in a processing machine |
DE102010022365A1 (en) * | 2009-06-26 | 2011-04-07 | Heidelberger Druckmaschinen Ag | Preservation of the color profile in the inking unit during print interruptions |
JP5897853B2 (en) * | 2011-09-12 | 2016-04-06 | 株式会社小森コーポレーション | Method and apparatus for forming ink film thickness distribution |
JP5897852B2 (en) * | 2011-09-12 | 2016-04-06 | 株式会社小森コーポレーション | Method and apparatus for correcting ink film thickness distribution |
JP6114503B2 (en) * | 2012-04-26 | 2017-04-12 | 株式会社小森コーポレーション | Ink supply method and ink supply apparatus |
JP6093151B2 (en) * | 2012-11-12 | 2017-03-08 | 株式会社小森コーポレーション | Method and apparatus for correcting ink film thickness distribution |
JP6093152B2 (en) * | 2012-11-12 | 2017-03-08 | 株式会社小森コーポレーション | Ink supply method and ink supply apparatus |
JP2015168212A (en) * | 2014-03-10 | 2015-09-28 | 上海光華印刷機械有限公司 | Dampening water for printer, and arrangement mechanism of ink supply system |
JP6236516B2 (en) * | 2016-11-29 | 2017-11-22 | 株式会社小森コーポレーション | Ink supply method and ink supply apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1245386A1 (en) * | 2001-03-27 | 2002-10-02 | MAN Roland Druckmaschinen AG | Method and means for obtaining an ink distribution in the inking device of a printing press |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1561100A1 (en) * | 1966-12-27 | 1970-02-12 | Planeta Veb Druckmasch Werke | Inking unit of rotary printing machines |
US4088074A (en) * | 1974-11-25 | 1978-05-09 | Dahlgren Harold P | Apparatus for inking printing plates |
DD126386A1 (en) * | 1976-03-29 | 1977-07-13 | ||
US4240346A (en) * | 1979-01-29 | 1980-12-23 | Harris Corporation | Web printing press |
DE3303988A1 (en) * | 1983-02-05 | 1984-09-13 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | INK |
DE3344778C1 (en) * | 1983-12-10 | 1985-04-11 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Ink metering device for the inking unit of a printing machine |
DE3344777C1 (en) * | 1983-12-10 | 1985-06-13 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Fountain solution metering device for the dampening unit of a printing press |
US4524692A (en) * | 1984-04-18 | 1985-06-25 | Didde Graphic Systems Corporation | Electronic ink flow control for printing |
DD257990A1 (en) * | 1986-04-21 | 1988-07-06 | Polygraph Leipzig | PROCESS FOR PARTIAL REMOVAL OF COLOR FROM THE PAINTWORK |
DE4013740C3 (en) * | 1989-06-19 | 1999-04-08 | Heidelberger Druckmasch Ag | Method and device for quickly reaching the production status in an offset printing press |
EP0403861B1 (en) | 1989-06-19 | 1994-08-31 | Heidelberger Druckmaschinen Aktiengesellschaft | Method of rapid attainment of print-readiness |
DE4013464C2 (en) * | 1990-04-27 | 1995-01-05 | Heidelberger Druckmasch Ag | Rubberizing the printing form of a printing press |
DE4230090C2 (en) * | 1992-09-09 | 1995-12-07 | Heidelberger Druckmasch Ag | Inking unit for a printing press |
DE19756077A1 (en) * | 1997-12-17 | 1999-06-24 | Heidelberger Druckmasch Ag | Method for operating a rotary printing press and device in a rotary printing press |
US6205926B1 (en) * | 1998-10-23 | 2001-03-27 | Heidelberger Druckmaschinen Ag | Method for on the run plate changes in offset web-fed press |
DE29901697U1 (en) * | 1999-02-01 | 2000-07-13 | Heidelberger Druckmasch Ag | Inking unit in a printing press |
US6272986B1 (en) * | 1999-10-15 | 2001-08-14 | Howard W. DeMoore | Retractable impression cylinder inking/coating apparatus having ferris movement between printing units |
US6612233B2 (en) * | 2000-02-18 | 2003-09-02 | Mitsubishi Heavy Industries, Ltd. | Sheet feed offset press |
-
2002
- 2002-03-06 DE DE10209861A patent/DE10209861B4/en not_active Expired - Fee Related
-
2003
- 2003-02-18 JP JP2003039717A patent/JP2003251787A/en active Pending
- 2003-02-26 AT AT03004104T patent/ATE521476T1/en active
- 2003-02-26 EP EP03004104A patent/EP1342573B1/en not_active Expired - Lifetime
- 2003-03-05 US US10/382,338 patent/US6712002B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1245386A1 (en) * | 2001-03-27 | 2002-10-02 | MAN Roland Druckmaschinen AG | Method and means for obtaining an ink distribution in the inking device of a printing press |
DE10115121A1 (en) * | 2001-03-27 | 2002-10-17 | Roland Man Druckmasch | Method and device for generating a color distribution in the inking unit of printing machines |
Also Published As
Publication number | Publication date |
---|---|
US20030172825A1 (en) | 2003-09-18 |
EP1342573A2 (en) | 2003-09-10 |
EP1342573A3 (en) | 2007-02-28 |
DE10209861B4 (en) | 2012-10-04 |
US6712002B2 (en) | 2004-03-30 |
ATE521476T1 (en) | 2011-09-15 |
DE10209861A1 (en) | 2003-09-25 |
JP2003251787A (en) | 2003-09-09 |
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