EP0324141B1 - Inking unit - Google Patents

Inking unit Download PDF

Info

Publication number
EP0324141B1
EP0324141B1 EP88121339A EP88121339A EP0324141B1 EP 0324141 B1 EP0324141 B1 EP 0324141B1 EP 88121339 A EP88121339 A EP 88121339A EP 88121339 A EP88121339 A EP 88121339A EP 0324141 B1 EP0324141 B1 EP 0324141B1
Authority
EP
European Patent Office
Prior art keywords
chamber
doctor blade
ink
inking unit
doctor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88121339A
Other languages
German (de)
French (fr)
Other versions
EP0324141A2 (en
EP0324141A3 (en
Inventor
Norbert Weisbrod
Norbert Köbler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Albert Frankenthal AG
Original Assignee
Albert Frankenthal AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Albert Frankenthal AG filed Critical Albert Frankenthal AG
Publication of EP0324141A2 publication Critical patent/EP0324141A2/en
Publication of EP0324141A3 publication Critical patent/EP0324141A3/en
Application granted granted Critical
Publication of EP0324141B1 publication Critical patent/EP0324141B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/027—Ink rail devices for inking ink rollers

Definitions

  • the invention relates to an inking unit, in particular a short inking unit, for printing machines, in particular offset printing machines, with at least one anilox roller, which is assigned a chambered doctor blade arrangement with two doctor blades, which are preferably accommodated on a doctor blade holder and are offset with respect to one another in the circumferential direction of the anilox roller and which delimit an ink chamber which can be acted upon by ink. into which the anilox roller is immersed, as can be seen, for example, from US Pat. No. 4,590,855.
  • this object is achieved in that the ink chamber is preceded by an inkable pre-chamber outside of the doctor blade, which acts as a front or closing squeegee and is upstream in the direction of rotation of the anilox roller, and into which the anilox roller is immersed.
  • the inking of the anilox roller in the area of the pre-chamber ensures that the entire length of the doctor blade, which is at risk of wear due to the contaminants to be wiped off, is applied over its entire length, which also ensures gentle operation in the event of an unfavorable angle of attack of this doctor blade. With the help of the measures according to the invention, it is therefore possible to ensure a long doctor life even if the doctor blade located upstream is turned negative.
  • the prechamber can be supplied with paint from the paint chamber, which can preferably be pressurized, via at least one overflow opening.
  • a particularly simple design results in an advantageous manner in that the prechamber is separated from the ink chamber only by the doctor blade located upstream and that at least one overflow opening is provided in the area of this doctor blade and / or its receptacle.
  • the prechamber can expediently be provided with a paint overflow, which can be formed in a simple manner in that the prechamber is delimited by a baffle plate which does not touch the anilox roller.
  • the short inking unit on which Firgur 1 is based consists of a rubberized applicator roller 2 which cooperates with a plate cylinder 1 which can be covered with hard offset printing plates and which has the same diameter as the plate cylinder and an anilox roller 3 which cooperates with the applicator roller 2 and which has a smaller diameter Applicator roller 2 together with a dampening unit designated as a whole by 4.
  • the circumference of the anilox roller 3, which can have a ceramic cover, is provided with cups 5 indicated in an enlarged manner in FIG. 1 and webs 6 delimiting them. The cups 5 are filled with paint, the webs 6 are scraped off, so that there is an exact dosage of the paint corresponding to the capacity of the cups 5.
  • FIG. 1 The ink supply to the anilox roller 3 and the doctoring take place by means of a chamber doctor blade arrangement designated as a whole in FIG. 1, which, as can best be seen from FIG. 2, is provided by two in the circumferential direction of the anilox roller 3 doctor blades 11, 12 which are offset from one another and have an ink chamber 13 which is delimited and has an antechamber 41 arranged upstream thereof, that is to say arranged upstream of the ink chamber 13.
  • a plurality of chamber doctor blade arrangements 7 arranged next to one another for example two chamber doctor blade arrangements 7 each comprising half a roller length, can be provided.
  • the chambered doctor blade arrangement 7 comprises, as can further be seen in FIG. 2, a bar-shaped doctor holder 9 which can be received on supports 8 fixed to the frame and on which the two doctor blades 11, 12 which are offset with respect to one another in the direction of rotation of the anilox roller 3 are accommodated.
  • the doctor blades 11, 12 are held by jaws 10.
  • the jaws 10 can thus be designed as clamping jaws which clamp the respectively assigned doctor blade on the doctor holder 9.
  • the jaws 10 together with the doctor holder 9 are each intended to limit an insertion slot into which the associated doctor blade can be inserted without clamping, that is to say loosely.
  • the clear width of the insertion slot is three to four hundredths of a millimeter larger than the thickness of the doctor blade assigned in each case. This ensures that the doctor blades can expand laterally in the event of heating to be feared, particularly when processing offset ink, so that even with low contact force and therefore gentle operation, ripple of the doctor blades is prevented and reliable contact of the doctor blades is achieved.
  • both doctor blades 11, 12 lie against the circumference of the anilox roller 3 with a negative angle of attack, that is to say with the circumferential section lying back in the direction of rotation of the anilox roller 3, against the circumference of the anilox roller 3. If the direction of rotation of the anilox roller 3 should be reversible, a symmetrical, roof-shaped doctor blade arrangement could also be provided, with only the doctor blade located downstream in the direction of rotation of the anilox roller 3 being negatively positioned.
  • the two doctor blades 11, 12 offset from one another form the rear and front limits of the ink chamber 13 in the direction of rotation of the anilox roller 3, the radial limits of which are formed by the doctor blade holder 9 and the circumference of the anilox roller 3.
  • the ink chamber 3 and the pre-chamber 41 are closed on the end face by sealing jaws 43 resting on the end faces of the doctor blades 11, 12.
  • the sealing jaws 43 are gripped in the region of their contact with the doctor blades 11, 12 by finger-shaped abutments 44 which extend in the longitudinal direction of the doctor blades 11 , 12 are resiliently supported on the squeegee holder 9, as indicated at 45.
  • the ink chamber 13 is supplied with paint.
  • the squeegee holder 9 is provided with a distribution chamber 17 formed by an axial bore, from which a plurality of inflow bores 19, which are distributed uniformly over the length of the squeegee holder 9 and exit into the ink chamber 13, and which via a connection bore 18 lead to a supply line leading to an ink pump 16 15 can be connected.
  • the ink in the ink chamber 13 should be present with a slight overpressure, so that the anilox roller 3 is reliably inked without further aids.
  • the pre-chamber 41 is also supplied with paint.
  • the pre-chamber 41 can be provided with its own paint supply.
  • the pre-chamber 41 is acted upon by excess paint emerging from the ink chamber 13.
  • the ink chamber 13 is in fact provided with overflow openings 24, via which ink can flow, which is returned to the pump 16, so that a color cycle results.
  • These overflow openings 24, as can be seen further in FIG. 2, can be designed as bore-shaped recesses, spaced from the doctor edge, of the upstream doctor blade 11, which acts as a preliminary or closing doctor blade.
  • slots arranged in the area of the doctor blade holder could also be provided as overflow openings.
  • prechamber 41 is applied uniformly over the entire length of the chamber divided overflow openings 24 provided.
  • the antechamber 41 is delimited by a dust plate 40 arranged approximately parallel to the adjacent doctor blade 11, which does not touch the circumference of the anilox roller 3.
  • the roller-side edge of the baffle plate 40 thus forms an overflow edge delimiting an outlet slot 42.
  • the baffle plate 40 can be molded onto the squeegee holder 9 or the closing squeegee jaws 10 or, as here, be attached.
  • the ink penetrating through the overflow openings 24 is accumulated in the antechamber 41.
  • the excess ink can swell out of the pre-chamber 41 in the area of the outlet gap 42, so that only a complete filling of the pre-chamber 41 is guaranteed, but the occurrence of an undesirable overpressure is not possible.
  • the outlet gap 42 is covered by a drainage channel 14 which catches the excess paint dripping off.
  • a return line 26 leads from the drainage channel 14 to a paint reservoir or directly to the paint pump 16.
  • doctor blade 11 anilox roller receives its final inking in the area of the ink chamber 13, which is under a slight positive pressure here, that is to say the filling of the cells 5 is supplemented where something is still missing.
  • the webs 6 are scraped off by means of the doctor blade 12 located downstream. Accordingly, this is known as a squeegee.
  • the opposite doctor blade is referred to as the front or closing doctor blade. In the exemplary embodiment shown, both doctor blades 11, 12, as already mentioned above, are made negative.
  • a fixed, predetermined direction of rotation of the anilox roller 3 is used, so that only one prechamber 41 is provided which is adjacent to the doctor blade, which acts in each case as a pre-doctor or closing doctor. If the direction of rotation of the anilox roller 3 can be reversed, prechambers could be provided in the area of both doctor blades, with no prechamber not being used in each case by applying a doctor blade with overflow openings only in the region of the prechamber required.

Landscapes

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

Description

Die Erfindung betrifft ein Farbwerk, insbesondere ein Kurzfarbwerk, für Druckmaschinen, insbesondere Offsetdruckmaschinen, mit wenigstens einer Rasterwalze, der eine Kammerrakelanordnung mit zwei vorzugsweise auf einem Rakelhalter aufgenommenen, in Umfangsrichtung der Rasterwalze gegeneinander versetzten Rakelblättern zugeordnet ist, die eine mit Farbe beaufschlagbare Farbkammer begrenzen, in welche die Rasterwalze eintaucht, wie dies beispielsweise aus der US-A-4 590 855 hervorgeht.The invention relates to an inking unit, in particular a short inking unit, for printing machines, in particular offset printing machines, with at least one anilox roller, which is assigned a chambered doctor blade arrangement with two doctor blades, which are preferably accommodated on a doctor blade holder and are offset with respect to one another in the circumferential direction of the anilox roller and which delimit an ink chamber which can be acted upon by ink. into which the anilox roller is immersed, as can be seen, for example, from US Pat. No. 4,590,855.

Der von der Rasterwalze nachgeordneten Walze, bei Kurzfarbwerken ist dies bereits die Auftragwalze, ablaufende Umfangsabschnitt der Rasterwalze ist nicht nur nicht mehr voll eingefärbt, sondern in der Regel mit in das Farbwerk eingedrungenen Verunreinigungen in Form von Feuchtmitteln und dergleichen, behaftet. Es besteht daher die Gefahr, daß das in Drehrichtung der Rasterwalze hintere Rakelblatt, welches diese Verunreinigungen von der Rasterwalze abstreifen soll und als Vor- bzw. Schließrakel fungiert, vergleichsweise schnell verschleißt, da die genannten Verunreinigungen, insbesondere in Form des Feuchtmittels, einen Rakelverschleiß außerordentlich begünstigen.The roller arranged downstream of the anilox roller, in short inking units this is already the applicator roller, the circumferential section of the anilox roller that is running is not only no longer fully inked, but is usually contaminated with impurities that have penetrated into the inking unit in the form of dampening solutions and the like. There is therefore a risk that the doctor blade in the direction of rotation of the anilox roller, which is intended to strip these contaminants from the anilox roller and act as a front or closing doctor blade, wears out comparatively quickly, since the contaminants mentioned, particularly in the form of the dampening solution, cause doctor blade wear to be extremely high favor.

Hiervon ausgehend ist es daher die Aufgabe der vorliegenden Erfindung, ein Farbwerk eingangs erwähnter Art mit einfachen und kostengünstigen Mitteln so zu verbessern, daß das als Vor- bzw. Schließrakel fungierende Rakelblatt geschont ist.Proceeding from this, it is therefore the object of the present invention to improve an inking unit of the type mentioned at the outset with simple and inexpensive means in such a way that the doctor blade acting as a preliminary or closing doctor is protected.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Farbkammer eine außerhalb des als Vor- bzw. Schließrakel wirkenden, in Drehrichtung der Rasterwalze stromaufwärts gelegenen Rakelblatts angeordnete, mit Farbe beaufschlagbare Vorkammer vorgeordnet ist, in welche die Rasterwalze eintaucht.According to the invention, this object is achieved in that the ink chamber is preceded by an inkable pre-chamber outside of the doctor blade, which acts as a front or closing squeegee and is upstream in the direction of rotation of the anilox roller, and into which the anilox roller is immersed.

Die im Bereich der Vorkammer bewirkte Einfärbung der Rasterwalze stellt sicher, daß das aufgrund der abzustreifenden Verunreinigungen verschleißgefährdete, stromaufwärts gelegene Rakelblatt auf seiner ganzen Länge mit Farbe beaufschlagt wird, was auch im Falle eines für den Verschleiß ungünstigen Anstellwinkels dieses Rakelblatts einen schonenden Betrieb gewährleistet. Mit Hilfe der erfindungsgemäßen Maßnahmen ist es daher möglich, auch bei negativer Anstellung des stromaufwärts gelegenen Rakelblatts eine hohe Rakelstandzeit zu gewährleisten.The inking of the anilox roller in the area of the pre-chamber ensures that the entire length of the doctor blade, which is at risk of wear due to the contaminants to be wiped off, is applied over its entire length, which also ensures gentle operation in the event of an unfavorable angle of attack of this doctor blade. With the help of the measures according to the invention, it is therefore possible to ensure a long doctor life even if the doctor blade located upstream is turned negative.

In vorteilhafter Weiterbildung der übergeordneten Maßnahmen kann die Vorkammer über wenigstens eine Überströmöffnung mit Farbe aus der vorzugsweise mit Überdruck beaufschlagbaren Farbkammer beaufschlagbar sein. Diese Maßnahmen stellen sicher, daß, die Vorkammer keine eigene Farbversorgung benötigt. Vielmehr findet hier die aus der Farbkammer austretende Überschußfarbe zur Voreinfärbung der Rasterwalze Verwendung, was eine einfache Bauweise gewährleistet.In an advantageous development of the superordinate measures, the prechamber can be supplied with paint from the paint chamber, which can preferably be pressurized, via at least one overflow opening. These measures ensure that the pre-chamber does not need its own paint supply. Rather, the excess ink emerging from the ink chamber is used for pre-inking the anilox roller, which ensures a simple construction.

Eine besonders einfache Auführung ergibt sich dabei in vorteilhafter Weise dadurch, daß die Vorkammer lediglich durch das stromaufwärts gelegene Rakelblatt von der Farbkammer getrennt ist und daß im Bereich diese Rakelblatts und/oder seiner Aufnahme wenigstens eine Überströmöffnung vorgesehen ist.A particularly simple design results in an advantageous manner in that the prechamber is separated from the ink chamber only by the doctor blade located upstream and that at least one overflow opening is provided in the area of this doctor blade and / or its receptacle.

Zweckmäßig kann die Vorkammer mit einem Farbüberlauf versehen sein, der auf einfache Weise dadurch gebildet werden kann, daß die Vorkammer durch eine die Rasterwalze nicht berührendes Staublech begrenzt wird. Diese Maßnahmen ergeben nicht nur einen verschleißfreien Betrieb im Bereich des Staublechs, sondern vermeiden gleichzeitig auch die Entstehung eines unerwünscht hohen Überdrucks. Dennoch ist durch die aus der Vorkammer herausquellende Farbe eine zuverlässige Voreinfärbung der Rasterwalze gewährleistet.The prechamber can expediently be provided with a paint overflow, which can be formed in a simple manner in that the prechamber is delimited by a baffle plate which does not touch the anilox roller. These measures not only result in wear-free operation in the area of the baffle plate, but at the same time prevent the development of an undesirably high excess pressure. Nevertheless, the ink swelling out of the pre-chamber ensures reliable pre-inking of the anilox roller.

Weitere zweckmäßige Fortbildungen und vorteilhafte Ausgestaltungen der übergeordneten Maßnahmen ergeben sich aus der nachstehenden Beschreibung eines Ausführungsbeispiels anhand der Zeichnung in Verbindung mit den restlichen Unteransprüchen.Further expedient further developments and advantageous refinements of the superordinate measures result from the following description of an exemplary embodiment with reference to the drawing in conjunction with the remaining subclaims.

In der Zeichnung zeigen:

  • Figur 1 ein Kurzfarbwerk für eine Rollenrotationsoffsetdruckmaschine in schematischer Darstellung und
  • Figur 2 einen Radialschnitt durch eine einer Rasterwalze zugeordnete, erfindungsgemäße Kammerrakelanordnung.
The drawing shows:
  • Figure 1 is a short inking unit for a web rotary offset printing machine in a schematic representation and
  • FIG. 2 shows a radial section through a chambered doctor blade arrangement according to the invention assigned to an anilox roller.

Das der Firgur 1 zugrundeliegende Kurzfarbwerk besteht aus einer mit einem mit harten Offsetdruckplatten belegbaren Plattenzylinder 1 zusammenwirkenden, gummierten Auftragwalze 2 gleichen Durchmessers wie der Plattenzylinder und einer mit der Auftragwalze 2 zusammenwirkenden, einen kleineren Durchmesser aufweisenden Rasterwalze 3. Im Falle der hier vorliegenden Offsetdruckmaschine wirkt die Auftragwalze 2 gleichzeitig mit einem als Ganzes mit 4 bezeichneten Feuchtwerk zusammen. Der Umfang der Rasterwalze 3, die einen Keramikbezug aufweisen kann, ist mit in Figur 1 vergrößert angedeuteten Näpfchen 5 und diese begrenzenden Stegen 6 versehen. Die Näpfchen 5 werden mit Farbe gefüllt, die Stege 6 werden abgerakelt, so daß sich eine dem Fassungsvermögen der Näpfchen 5 entsprechende, exakte Dosierung der Farbe ergibt.The short inking unit on which Firgur 1 is based consists of a rubberized applicator roller 2 which cooperates with a plate cylinder 1 which can be covered with hard offset printing plates and which has the same diameter as the plate cylinder and an anilox roller 3 which cooperates with the applicator roller 2 and which has a smaller diameter Applicator roller 2 together with a dampening unit designated as a whole by 4. The circumference of the anilox roller 3, which can have a ceramic cover, is provided with cups 5 indicated in an enlarged manner in FIG. 1 and webs 6 delimiting them. The cups 5 are filled with paint, the webs 6 are scraped off, so that there is an exact dosage of the paint corresponding to the capacity of the cups 5.

Die Farbzufuhr zur Rasterwalze 3 und die Abrakelung erfolgen mittels einer in Figur 1 als Ganzes mit 7 bezeichneten Kammerrakelanordnung, die, wie am besten aus Figur 2 erkennbar ist, eine durch zwei in Umfangsrichtung der Rasterwalze 3 gegeneinander versetzte Rakelblätter 11, 12 begrenzte Farbkammer 13 und eine dieser vorgeordnete, das heißt stromaufwärts von der Farbkammer 13 angeordnete, Vorkammer 41 aufweist. Über der länge der Rasterwalze 3 können mehrer nebeneinander angeordnete Kammerrakelanordnungen 7, beispielsweise zwei jeweils eine halbe Walzenlänge umfassende Kammerrakelanordnungen 7, vorgesehen sein. Es wäre aber auch denkbar, beispielsweise pro Breite der auf dem Plattenzylinder 1 aufgenommenen Druckplatten jeweils eine Kammerrakelanordnung 7 vorzusehen. Die Verwendung mehrerer, nebeneinander angeordneter Kammerrakelanordnungen 7 erleichtert die Handhabung und ermöglicht eine zonenweise Stillegung der Farbversorgung der Rasterwalze 3.The ink supply to the anilox roller 3 and the doctoring take place by means of a chamber doctor blade arrangement designated as a whole in FIG. 1, which, as can best be seen from FIG. 2, is provided by two in the circumferential direction of the anilox roller 3 doctor blades 11, 12 which are offset from one another and have an ink chamber 13 which is delimited and has an antechamber 41 arranged upstream thereof, that is to say arranged upstream of the ink chamber 13. Over the length of the anilox roller 3, a plurality of chamber doctor blade arrangements 7 arranged next to one another, for example two chamber doctor blade arrangements 7 each comprising half a roller length, can be provided. However, it would also be conceivable to provide, for example, one chamber doctor blade arrangement 7 per width of the printing plates accommodated on the plate cylinder 1. The use of a plurality of chamber doctor blade arrangements 7 arranged next to one another simplifies handling and enables the ink supply of the anilox roller 3 to be shut down zone by zone.

Die Kammerrakelanordnung 7 umfaßt, wie Figur 2 weiter erkennen läßt, einen auf gestellfesten Trägern 8 aufnehmbaren, balkenförmigen Rakelhalter 9, auf dem die beiden in Drehrichtung der Rasterwalze 3 gegeneinander versetzten Rakelblätter 11, 12 aufgenommen sind. Die Rakelblätter 11, 12 werden durch Backen 10 gehalten. Hierzu können die Backen 10 also Klemmbacken ausgebildet sein, welche das jeweils zugeordnete Rakelblatt am Rakelhalter 9 festklemmen. Im dargestellten Ausführungsbeispeil sollen die Backen 10 zusammen mit dem Rakelhalter 9 jeweils einen Einlegeschlitz begrenzen, in den das jeweils zugeordnete Rakelblatt ohne Klemmung, das heißt lose einlegbar ist. Hierzu besitzt die lichte Weite des Einlegeschlitzes ein Übermaß von drei bis vier hundertstel Millimetern gegenüber der Dicke des jeweils zugeordneten Rakelblatts. Hierdurch wird erreicht, daß sich die Rakelblätter im Falle einer insbesondere bei der Verarbeitung von Offsetfarbe zu befürchtenden Erwärmung seitlich ausdehnen können, so daß auch bei geringer Anstellkraft und damit schonender Betriebsweise eine Welligkeit der Rakelblätter verhindert und damit eine zuverlässige Anlage der Rakelblätter erreicht wird. Beide Rakelblätter 11, 12 liegen im dargestellten Ausführungsbeispiel mit negativem Anstellwinkel, das heißt mit mit dem in Drehrichtung der Rasterwalze 3 zurückliegenden Umfangsabschnitt einen stumpfen Winkel einschlie- ßender Anstellung, am Umfang der Rasterwalze 3 an. Sofern die Drehrichtung der Rasterwalze 3 umkehrbar sein sollte, könnte auch eine symmetrische, dachförmige Rakelanordnung vorgesehen sein, wobei jeweils nur das in Drehrichtung der Rasterwalze 3 vordere stromabwärts gelegene Rakelblatt negativ angestellt wäre.The chambered doctor blade arrangement 7 comprises, as can further be seen in FIG. 2, a bar-shaped doctor holder 9 which can be received on supports 8 fixed to the frame and on which the two doctor blades 11, 12 which are offset with respect to one another in the direction of rotation of the anilox roller 3 are accommodated. The doctor blades 11, 12 are held by jaws 10. For this purpose, the jaws 10 can thus be designed as clamping jaws which clamp the respectively assigned doctor blade on the doctor holder 9. In the exemplary embodiment shown, the jaws 10 together with the doctor holder 9 are each intended to limit an insertion slot into which the associated doctor blade can be inserted without clamping, that is to say loosely. For this purpose, the clear width of the insertion slot is three to four hundredths of a millimeter larger than the thickness of the doctor blade assigned in each case. This ensures that the doctor blades can expand laterally in the event of heating to be feared, particularly when processing offset ink, so that even with low contact force and therefore gentle operation, ripple of the doctor blades is prevented and reliable contact of the doctor blades is achieved. In the exemplary embodiment shown, both doctor blades 11, 12 lie against the circumference of the anilox roller 3 with a negative angle of attack, that is to say with the circumferential section lying back in the direction of rotation of the anilox roller 3, against the circumference of the anilox roller 3. If the direction of rotation of the anilox roller 3 should be reversible, a symmetrical, roof-shaped doctor blade arrangement could also be provided, with only the doctor blade located downstream in the direction of rotation of the anilox roller 3 being negatively positioned.

Die beiden gegeneinander versetzten Rakelblätter 11, 12 bilden die in Drehrichtung der Rasterwalze 3 hintere und vordere Begrenzung der Farbkammer 13, deren radiale Begrenzung durch den Rakelhalter 9 und den Umfang der Rasterwalze 3 gebildet werden. Stirnseitig sind die Farbkammer 3 und die Vorkammer 41 durch an den Stirnseiten der Rakelblätter 11, 12 anliegende Dichtbakken 43 verschlossen.The two doctor blades 11, 12 offset from one another form the rear and front limits of the ink chamber 13 in the direction of rotation of the anilox roller 3, the radial limits of which are formed by the doctor blade holder 9 and the circumference of the anilox roller 3. The ink chamber 3 and the pre-chamber 41 are closed on the end face by sealing jaws 43 resting on the end faces of the doctor blades 11, 12.

Diese werden durch mit ihren Seitenkanten in entsprechende, am Rakelhalter 9 vorgesehene Führungen 46 einsteckbare Bleche gebildet. Die lichte Weite der Fühgrungen besitzt soviel Übermaß in Längsrichtung der Rakelblätter 11, 12, daß diese sich ausdehnen können. Zur Bewerkstelligung einer zuverlässigen Anlage der Dichtbacken 43 an den Stirnseiten der Rakelblätter 11, 12 bzw. einer entsprechenden Begrenzung der Vorkammer 41 werden die Dichtbacken 43 im Bereich ihrer Anlage an den Rakelblättern 11, 12 von fingerförmigen Widerlagern 44 hinterfaßt, die in Längsrichtung der Rakelblätter 11, 12 federnd am Rakelhalter 9 abgestützt sind, wie bei 45 angedeutet ist.These are formed by their side edges in corresponding, 46 provided on the doctor holder 9 guides 46 insertable plates. The clear width of the guide stanchions has so much excess in the longitudinal direction of the doctor blades 11, 12 that they can expand. To bring about a reliable contact of the sealing jaws 43 on the end faces of the doctor blades 11, 12 or a corresponding limitation of the prechamber 41, the sealing jaws 43 are gripped in the region of their contact with the doctor blades 11, 12 by finger-shaped abutments 44 which extend in the longitudinal direction of the doctor blades 11 , 12 are resiliently supported on the squeegee holder 9, as indicated at 45.

Die Farbkammer 13 wird mit Farbe beaufschlagt. Hierzu ist der Rakelhalter 9 mit einer durch eine Axialbohrung gebildeten Verteilerkammer 17 versehen, von der mehrere, über die Länge des Rakelhalters 9 gleichmäßig verteilte, in die Farbkammer 13 ausmündende Zuströmbohrungen 19 abgehen und die über eine Anschlußbohrung 18 an eine zu einer Farbpumpe 16 führende Versorgungsleitung 15 anschließbar ist. Im dargestellten Ausführungsbeispiel soll die Farbe in der Farbkammer 13 mit leichtem Überdruck anstehen, so daß die Rasterwalze 3 ohne weitere Hilfsmittel zuverlässig eingefärbt wird. Es wäre aber auch denkbar, im Bereich der Farbkammer 13 eine mit der Rasterwalze 3 zusammenwirkende Schöpfwalze anzuordnen. In diesem Fall könnte auf einen Überdruck und dementsprechend auf eine vollständige Füllung der Farbkammer 13 verzichtet werden.The ink chamber 13 is supplied with paint. For this purpose, the squeegee holder 9 is provided with a distribution chamber 17 formed by an axial bore, from which a plurality of inflow bores 19, which are distributed uniformly over the length of the squeegee holder 9 and exit into the ink chamber 13, and which via a connection bore 18 lead to a supply line leading to an ink pump 16 15 can be connected. In the illustrated embodiment, the ink in the ink chamber 13 should be present with a slight overpressure, so that the anilox roller 3 is reliably inked without further aids. However, it would also be conceivable to arrange a scoop roller which interacts with the anilox roller 3 in the region of the ink chamber 13. In this case, overpressure and, accordingly, complete filling of the ink chamber 13 could be dispensed with.

Die Vorkammer 41 wird ebenfalls mit Farbe beaufschlagt. Hierzu kann die Vorkammer 41 mitt einer eigenen Farbversorgung versehen sein. Im dargestellten Ausführungsbeispiel wird die Vorkammer 41 mit aus der Farbkammer 13 austretender Überschußfarbe beaufschlagt. Zur Begrenzung des in der Farbkammer 13 herrschenden Überdrucks ist die Farbkammer 13 nämlich mit Überströmöffnungen 24 versehen, über welche Farbe abströmen kann, die zur Pumpe 16 zurückgeleitet wird, so daß sich eine Farbkreislauf ergibt. Diese Überströmöffnungen 24 können, wie Figur 2 weiter erkennen läßt, als von der Rakelkante beabstandete, bohrungsförmige Ausnehmungen des stromaufwärts gelegenen, als Vor- bzw. Schließrakel wirkenden Rakelblatts 11 ausgebildet sein. Zusätzlich oder alternativ zu diesen Ausnehmungen des Rakelblatts 11 könnten aber auch im Bereich der Rakelblattaufnahme angeordnete Schlitze als Überströmöffnungen vorgesehen sein. Zur Erzielung einer möglichst gleichmäßigen Beaufschlagung der Vorkammer 41 auf ihrer ganzen Länge sind mehrere, gleichmäßig über die ganze Kammerlänge verteilte Überströmöffnungen 24 vorgesehen.The pre-chamber 41 is also supplied with paint. For this purpose, the pre-chamber 41 can be provided with its own paint supply. In the exemplary embodiment shown, the pre-chamber 41 is acted upon by excess paint emerging from the ink chamber 13. To limit the overpressure prevailing in the ink chamber 13, the ink chamber 13 is in fact provided with overflow openings 24, via which ink can flow, which is returned to the pump 16, so that a color cycle results. These overflow openings 24, as can be seen further in FIG. 2, can be designed as bore-shaped recesses, spaced from the doctor edge, of the upstream doctor blade 11, which acts as a preliminary or closing doctor blade. In addition or as an alternative to these recesses in the doctor blade 11, slots arranged in the area of the doctor blade holder could also be provided as overflow openings. In order to achieve the most uniform possible application of the prechamber 41 over its entire length, several are applied uniformly over the entire length of the chamber divided overflow openings 24 provided.

Die Vorkammer 41 wird durch ein etwa parallel zum benachbarten Rakelblatt 11 angeordnetes Staublech 40 begrenzt, das den Umfang der Rasterwalze 3 nicht berührt. Die walzenseitige Kante des Staublechs 40 bildet somit eine einen Austrittsschlitz 42 begrenzende Überlaufkante. Das Staublech 40 kann an den Rakelhalter 9 oder den schließrakelseitigen Backen 10 angeformt oder, wie hier, angesetzt sein.The antechamber 41 is delimited by a dust plate 40 arranged approximately parallel to the adjacent doctor blade 11, which does not touch the circumference of the anilox roller 3. The roller-side edge of the baffle plate 40 thus forms an overflow edge delimiting an outlet slot 42. The baffle plate 40 can be molded onto the squeegee holder 9 or the closing squeegee jaws 10 or, as here, be attached.

In der Vorkammer 41 wird die über die Überströmöffnungen 24 eindringende Farbe aufgestaut. Die überschüssige Farbe kann im Bereich des Austrittsspalts 42 aus der Vorkammer 41 herausquellen, so daß lediglich eine völlständige Füllung der Vorkammer 41 gewährleistet, aber die Entstehung eines unerwünschten Überdrucks nicht möglich ist. Der Austrittsspalt 42 wird von einer Ablaufrinne 14 unterfaßt, welche die abtropfende Überschußfarbe auffängt. Von der Ablaufrinne 14 führt eine Rücklaufleitung 26 zu einem Farbvorratsbehälter oder direkt zur Farbpumpe 16.The ink penetrating through the overflow openings 24 is accumulated in the antechamber 41. The excess ink can swell out of the pre-chamber 41 in the area of the outlet gap 42, so that only a complete filling of the pre-chamber 41 is guaranteed, but the occurrence of an undesirable overpressure is not possible. The outlet gap 42 is covered by a drainage channel 14 which catches the excess paint dripping off. A return line 26 leads from the drainage channel 14 to a paint reservoir or directly to the paint pump 16.

Der Umfang der in die Vorkammer 41 eintauchenden Rasterwalze 3, an der Rückstände in Form von Restfarbe, eingedrungenen Feuchtmittel, eingedrungenen Staubpartikeln und dergleichen anhaften können, erfährt im Bereich der mit Farbe gefüllten Vorkammer 41 eine Voreinfärbung auf der ganzen Länge. Dieser gesamte Auftrag wird mittels des der Vorkammer 41 nachgeordneten Rakelblatts 11 abgestreift. Infolge der vorher erfolgten vollständigen Einfärbung der Rasterwalze 3 wird dabei der durch die Rückstände insbesondere in Form des Feuchtmittels, früher verursachte Verschleiß des Rakelblatts 11 beseitigt oder jedenfalls stark abgemildert.The circumference of the anilox roller 3 immersed in the pre-chamber 41, to which residues in the form of residual ink, penetrated dampening solution, penetrated dust particles and the like can adhere, undergoes pre-inking along the entire length in the area of the pre-chamber 41 filled with ink. This entire order is stripped off by means of the doctor blade 11 arranged downstream of the prechamber 41. As a result of the complete inking of the anilox roller 3, the wear of the doctor blade 11 caused earlier by the residues, in particular in the form of the dampening solution, is eliminated or in any case greatly reduced.

Die voreingefärbte und mittels des Rakelblatts 11 abgestreifte Rasterwalze erhält im Bereich der hier unter leichtem Überdruck stehenden Farbkammer 13 ihre endgültige Einfärbung, das heißt die Füllung der Näpfchen 5 wird da, wo noch etwas fehlt, ergänzt. Am Ausgang der Farbkammer 14 werden die Stege 6 mittels des stromabwärts gelegenen Rakelblatts 12 abgerakelt. Dieses wird dementsprechend als Arbeitsrakel bezeichnet. Im Gegensatz dazu wird das gegenüberliegende Rakelblatt als Vor- bzw. Schließrakel bezeichnet. Im dargestellten Ausführungsbeispiel sind beide Rakelblätter 11, 12, wie weiter oben schon erwähnt wurde, negativ angestellt. In diesem Fall wird mit einer fest vorgegebenen Drehrichtung der Rasterwalze 3 gearbeitet, so daß lediglich eine dem in jedem Falle als Vor- bzw. Schließrakel fungierenden Rakelblatt benachbarte Vorkammer 41 vorgesehen ist. Im Falle einer Umkehrbarkeit der Drehrichtung der Rasterwalze 3 könnten im Bereich beider Rakelblätter Vorkammern vorgesehen sein, wobei jeweils nicht benötigte Vorkammer nicht mit Farbe beaufschlagt wird, indem lediglich im Bereich der benötigten Vorkammer ein Rakelblatt mit Überströmöffnungen eingesetzt wird.The pre-inked and stripped by means of the doctor blade 11 anilox roller receives its final inking in the area of the ink chamber 13, which is under a slight positive pressure here, that is to say the filling of the cells 5 is supplemented where something is still missing. At the exit of the ink chamber 14, the webs 6 are scraped off by means of the doctor blade 12 located downstream. Accordingly, this is known as a squeegee. In contrast, the opposite doctor blade is referred to as the front or closing doctor blade. In the exemplary embodiment shown, both doctor blades 11, 12, as already mentioned above, are made negative. In this case, a fixed, predetermined direction of rotation of the anilox roller 3 is used, so that only one prechamber 41 is provided which is adjacent to the doctor blade, which acts in each case as a pre-doctor or closing doctor. If the direction of rotation of the anilox roller 3 can be reversed, prechambers could be provided in the area of both doctor blades, with no prechamber not being used in each case by applying a doctor blade with overflow openings only in the region of the prechamber required.

Claims (10)

1. An inking unit and more particularly short inking unit for printing presses, more particularly offset litho presses comprising at least one pitted roll (3), with which a chamber doctor blade arrangement (7) is associated having two doctor blades (11 and 12) which are offset in relation to each other in the circumferential direction of the pitted roll and are preferably mounted on a doctor blade holder (9) and furthermore delimit an ink chamber (13), able to be charged with ink, into which chamber the pitted roll (3) extends, characterized in that the ink chamber (13) is preceded by a pre-chamber (41) which is able to be charged with ink and is placed outside the doctor blade (11) which is upstream in the direction of rotation of the pitted roll (3) and acts as a preliminary or shut off doctor blade, said pitted roll (3) being arranged to extend into said pre-chamber (41).
2. The inking unit as claimed in claim 1, characterized in that the ink chamber (13), which is preferably able to be charged with a gage pressure, is provided with at least one overflow opening (24) running into the pre-chamber (41
3. The inking unit as claimed in claim 2, characterized in that the pre-chamber (41) is separated by the adjacent doctor blade (11) from the ink chamber (13) and in that within this doctor blade (11) and/or the means receiving it at least one transfer opening (24) is provided.
4. The inking unit as claimed in claim 3, characterized in that the doctor blade (11) is provided with recesses which are preferably evenly distributed along its length and are spaced from the edge of the doctor blade in order to constitute the transfer opening (24).
5. The inking unit as claimed in any one of the preceding claims, characterized in that the pre-chamber (41) is provided with an ink overflow.
6. The inking unit as claimed in claim 5, characterized in that the pre-chamber (41) is delimited by a sheet metal dam (40) spaced from the doctor blade (11) and received on the doctor blade holder (9), whose end adjacent to the pitted roll constitutes an overflow edge not in contact with the pitted roll (3).
7. The inking unit as claimed in claim 5 or in claim 6, characterized in that the overflow gap (42), which is preferably delimited by the sheet metal dam (40), has a drain gutter (14) underneath it.
8. The inking unit as claimed in claim 8, characterized in that the drain gutter (14) is connected with a return line (26) running to an ink reservoir and/or an ink pump (16).
9. The inking unit as claimed in any one of the preceding claims, characterized in that the doctor blade (11) adjacent to the pre-chamber (41) and more particularly both doctor blades (11 and 12) are adapted to be loosely positioned in a respectively associated receiving slot in the doctor blade holder (9).
10. The inking unit as claimed in claim 9, characterized in that at least the ink chamber (13) and preferably the ink chamber (13) and the pre-chamber (41) are delimited at the end by sealing cheeks (43) which are positioned in resilient engagement with the ends of the doctor blade (11 or 12) or, respectively, the doctor blades (11 and 12) and of the sheet metal dam (40) in the longitudinal direction of the doctor blades (11 and 12), such sealing cheeks preferably being able to be elastically thrust into position.
EP88121339A 1988-01-09 1988-12-21 Inking unit Expired - Lifetime EP0324141B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3800411 1988-01-09
DE3800411A DE3800411A1 (en) 1988-01-09 1988-01-09 INK

Publications (3)

Publication Number Publication Date
EP0324141A2 EP0324141A2 (en) 1989-07-19
EP0324141A3 EP0324141A3 (en) 1990-08-22
EP0324141B1 true EP0324141B1 (en) 1992-07-08

Family

ID=6344988

Family Applications (2)

Application Number Title Priority Date Filing Date
EP88121339A Expired - Lifetime EP0324141B1 (en) 1988-01-09 1988-12-21 Inking unit
EP88121337A Expired - Lifetime EP0324139B1 (en) 1988-01-09 1988-12-21 Doctor blade device

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP88121337A Expired - Lifetime EP0324139B1 (en) 1988-01-09 1988-12-21 Doctor blade device

Country Status (4)

Country Link
US (2) US5010815A (en)
EP (2) EP0324141B1 (en)
JP (2) JPH07102687B2 (en)
DE (3) DE3800411A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3938447A1 (en) * 1989-11-18 1991-05-23 Roland Man Druckmasch INKWORK WITH ZONAL DOSAGE OF COLOR QUANTITY
DE4012825A1 (en) * 1990-04-23 1991-10-24 Koenig & Bauer Ag CHAMBER Squeegee
US5213037A (en) * 1990-11-02 1993-05-25 The Procter & Gamble Company Apparatus for applying ink to a substrate
DE4117390C2 (en) * 1991-05-28 2003-11-06 Koenig & Bauer Ag Squeegee bar for an inking unit of a rotary printing press
DE4119338A1 (en) * 1991-06-12 1992-12-17 Koenig & Bauer Ag SHORT INKING MACHINE FOR AN OFFSET ROLL ROTARY PRINTING MACHINE
FR2689451B1 (en) * 1992-04-03 1997-01-17 Komori Chambon INKING DEVICE FOR A HELIOGRAPHIC PRINTING APPARATUS.
DE4401299C2 (en) * 1994-01-18 1997-04-30 Roland Man Druckmasch Device for inking an anilox roller of a rotary printing press
US5495800A (en) * 1995-03-29 1996-03-05 Cavanagh Corporation Enhanced application printing ink hand proofing device
US5836519A (en) * 1996-10-03 1998-11-17 Brown; Robert S. Portable wheeled spraying apparatus having an adjustable handle
DE29617829U1 (en) * 1996-10-14 1997-01-23 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Application device for applying a coating medium
US6119595A (en) * 1997-10-06 2000-09-19 R. J. Reynolds Tobacco Company Gravure printing press with encapsulated ink applicator and method
US6076463A (en) * 1998-03-13 2000-06-20 Heidelberger Druckmaschinen Ag Ink metering device and method of metering ink
CH693305A5 (en) * 1999-03-05 2003-05-30 Bobst Sa Removable inking device for a flexographic printing machine.
US6378426B1 (en) 2000-05-12 2002-04-30 Harper Companies International Manually operable proofer for producing sample test printings of inks and coatings
DE10158485A1 (en) 2001-01-12 2002-07-18 Heidelberger Druckmasch Ag Printing of coatings etc. with a print machine that has an improved ink dosing system that allows it to be used with inks whose viscosity is insensitive to temperature and so do not require tempering
US7013104B2 (en) * 2004-03-12 2006-03-14 Lexmark International, Inc. Toner regulating system having toner regulating member with metallic coating on flexible substrate
US7236729B2 (en) * 2004-07-27 2007-06-26 Lexmark International, Inc. Electrophotographic toner regulating member with induced strain outside elastic response region
DE102005040929B4 (en) * 2005-07-18 2009-06-04 Windmöller & Hölscher Kg Ink chamber doctor blade
JP5391559B2 (en) * 2008-03-04 2014-01-15 凸版印刷株式会社 Printing machine and method for producing printed matter using the same
EP3399099A1 (en) * 2017-05-03 2018-11-07 Oradoc S.r.l. Rigid and flexible doctor blade holder and system comprising a cylinder and a doctor blade holder
GB2576566B (en) * 2018-08-24 2022-12-14 Edward Rogerson Mark Improved wiper blade for printer roller

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2018193A (en) * 1931-08-27 1935-10-22 Goss Printing Press Co Ltd Inking mechanism and method
US2177656A (en) * 1933-06-30 1939-10-31 Harris Seybold Potter Co Gravure printing press
US2151969A (en) * 1938-06-09 1939-03-28 Standard Process Corp Inking apparatus and method
GB693187A (en) * 1950-12-22 1953-06-24 Harold Eric Baliol Scott Improvements in doctors for paper and like machines
FR1164098A (en) * 1956-01-13 1958-10-06 Vickerys Ltd Improved squeegee for papermaking and similar machines
GB800607A (en) * 1956-01-13 1958-08-27 Harold Eric Baliol Scott Improvements in or relating to doctors for papermaking and other machines
US3339485A (en) * 1964-06-15 1967-09-05 Bonnierfoeretagen Ab Adjustable ink supply device in rotary printing presses
GB1230020A (en) * 1967-06-30 1971-04-28
US3759175A (en) * 1970-03-10 1973-09-18 Strachan & Henshaw Ltd Dampening apparatus with rotor for projecting spray
DE2228685C3 (en) * 1972-06-13 1978-04-06 Escher Wyss Gmbh, 7980 Ravensburg Coating device
AT345240B (en) * 1973-02-01 1978-09-11 Zimmer Peter SQUEEGEE DEVICE FOR PRINTING TRACKS
GB1507825A (en) * 1974-04-08 1978-04-19 Ahlen & Akerlunds Forlags Ab Method and device for stripping excess ink from a rotating printing roll in rotogravure presses
US4009657A (en) * 1975-02-25 1977-03-01 Scott Paper Company Apparatus for applying fluid to an intaglio roll for transfer to a soft, absorbent fibrous web
DE2538908A1 (en) * 1975-09-02 1977-03-10 Kaspar Walter Maschinenfabrik Doctor blade for ink roller printing - is spring biased against roller between clamped support plates
US4455938A (en) * 1979-05-22 1984-06-26 Graph Tech Inc. Dampening apparatus for lithographic press
DE3043234A1 (en) * 1980-11-15 1982-07-01 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach INKBOX FOR A PRINTING MACHINE
JPS5962152A (en) * 1982-09-30 1984-04-09 Osaka Yomiuri Shinbunsha:Kk Ink supplier for rotary press printer
DE110081T1 (en) * 1982-12-02 1984-10-11 Rockwell International Corp., Pittsburgh, Pa. COLOR DISTRIBUTION BAR.
CH663362A5 (en) * 1984-01-07 1987-12-15 Jagenberg Ag DEVICE FOR COATING MATERIAL SHEETS RUNNING ON A SUPPORT ROLLER WITH ADJUSTABLE APPLICATION THICKNESS.
FI71081C (en) * 1984-05-11 1986-11-24 Waertsilae Oy Ab coating method
US4590855A (en) * 1984-06-18 1986-05-27 Printco Industries, Ltd. Reverse angle doctor blade assembly with stationary end seal
DE3427909C2 (en) * 1984-07-28 1987-02-12 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Paint dosing device
US4625643A (en) * 1984-08-09 1986-12-02 Davis William F Ink dispensing means
US4802928A (en) * 1984-08-13 1989-02-07 Thermo Electron-Web Systems, Inc. Doctoring apparatus and method employing prestressed doctor blade
DE3505598C2 (en) * 1984-10-30 1986-08-14 Windmöller & Hölscher, 4540 Lengerich Rinse inking unit with divided chamber doctor blade
EP0199520A3 (en) * 1985-04-19 1989-02-08 Vickers Plc Gravure printing press and method of manufacturing the same
EP0278255A3 (en) * 1987-02-04 1990-09-12 General Electric Company Solvent-resistant, compatible polyphenylene ether-linear polyester blends
DE3704433A1 (en) * 1987-02-12 1988-08-25 Frankenthal Ag Albert SHORT COLOR PLANT

Also Published As

Publication number Publication date
DE3872693D1 (en) 1992-08-13
EP0324139B1 (en) 1992-07-08
US5010815A (en) 1991-04-30
EP0324139A3 (en) 1990-08-08
EP0324141A2 (en) 1989-07-19
JPH01222959A (en) 1989-09-06
DE3800411A1 (en) 1989-07-20
EP0324141A3 (en) 1990-08-22
DE3872692D1 (en) 1992-08-13
EP0324139A2 (en) 1989-07-19
JPH07102687B2 (en) 1995-11-08
US5072669A (en) 1991-12-17
DE3800411C2 (en) 1990-03-29
JPH01225555A (en) 1989-09-08

Similar Documents

Publication Publication Date Title
EP0324141B1 (en) Inking unit
EP0458371B1 (en) Short inking device
DE3823340C2 (en) Chamber doctor blade for rotary printing machines
DE3117341C2 (en) Inking unit
EP0568674B1 (en) Inking cell doctor blade for an ink transfer body
EP0078444A1 (en) Inking arrangement for offset printing machines
DE4012825C2 (en)
EP0324140B1 (en) Inking unit
DE3329331A1 (en) PRINT WORK WITH SHORT INK
DE4213660C2 (en) Short inking unit for a web-fed rotary printing press
DE3838546C2 (en)
DE8426350U1 (en) Device for moistening a rotating plate cylinder
DE10023935A1 (en) Short inking unit of a rotary printing press
DD144155B1 (en) WETTING WORK FOR ROTATION OFFSET PRINTING MACHINES
DE102006029883A1 (en) Roller inking device for rotary printing machine, has scraper case attached to operating scraper that is parallel to roller, and ink chamber provided for receiving printing ink, where chamber is provided in downstream to ink chamber
DE2849096C2 (en) Dampening system
CH678710A5 (en)
DE3638813C2 (en)
DE8224875U1 (en) Inking unit for offset printing machines
DD148607A1 (en) COLOR FACTORY
DE1240887B (en) Inking unit for a rotogravure printing machine
DE102005041185B4 (en) Apparatus for coloring a roller on a rotary printing machine
DE4340867A1 (en) Wiper-actuating mechanism for printing-press application roller
DE29823689U1 (en) Roll rotary high pressure machine
DE102007003944A1 (en) Inking system for a rotary printing machine comprises a doctor blade unit positioned in the frame of a rotary printing machine and having a doctor blade which touches the surface of a roller in a contact line

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE FR GB IT LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB IT LI SE

17P Request for examination filed

Effective date: 19901004

17Q First examination report despatched

Effective date: 19910429

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI SE

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3872693

Country of ref document: DE

Date of ref document: 19920813

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19921021

Year of fee payment: 5

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19921119

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19921124

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19921125

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19921211

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19931221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19931222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19931231

Ref country code: CH

Effective date: 19931231

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19931221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 88121339.1

Effective date: 19940710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051221