EP2233291B1 - Groupe d'impression et procédé pour l'opérer - Google Patents

Groupe d'impression et procédé pour l'opérer Download PDF

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Publication number
EP2233291B1
EP2233291B1 EP09156152.2A EP09156152A EP2233291B1 EP 2233291 B1 EP2233291 B1 EP 2233291B1 EP 09156152 A EP09156152 A EP 09156152A EP 2233291 B1 EP2233291 B1 EP 2233291B1
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EP
European Patent Office
Prior art keywords
roller
rollers
driven
printing
ductor
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.)
Not-in-force
Application number
EP09156152.2A
Other languages
German (de)
English (en)
Other versions
EP2233291A1 (fr
Inventor
Matthias Riepenhoff
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.)
Wifag Maschinenfabrik AG
Original Assignee
Wifag Maschinenfabrik 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 Wifag Maschinenfabrik AG filed Critical Wifag Maschinenfabrik AG
Priority to EP09156152.2A priority Critical patent/EP2233291B1/fr
Publication of EP2233291A1 publication Critical patent/EP2233291A1/fr
Application granted granted Critical
Publication of EP2233291B1 publication Critical patent/EP2233291B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/13—Means for driving fountain rollers
    • 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
    • B41F31/14—Applications of messenger or other moving transfer rollers

Definitions

  • the invention relates to a printing unit, in particular the printing unit of a rotary printing machine, in particular the printing unit of a newspaper printing press, in particular the printing unit of a wet offset printing press.
  • the invention further relates to the method for operating the printing unit according to the invention.
  • the single drive of the cylinder comprises that via this drive, as a rule, the associated inking and / or dampening units are also driven by drive wheel trains by means of the individual drive of the cylinder.
  • the individual drive of the printing unit is achieved with a position-controlled drive. For this purpose, an angle encoder is mounted on the forme cylinder or the printing cylinder, with which the current position can be determined.
  • the WO2007 / 099147 A2 describes a printing unit for long narrow cylinders of a printing press, with a printing cylinder, a forme cylinder and an inking unit.
  • the inking unit has two positive cylinders close to the cylinder cylinder, which can be forcibly driven together or individually by a drive motor.
  • the two distribution cylinders are not directly in contact with each other, but both cooperate with at least one transfer roller, which is arranged between the two Reibzylindern in the roller mill of the inking unit.
  • the DE 200 03 767 U1 relates to a printing unit with a driven film roller, the rotational speed and / or direction is independently controlled or regulated.
  • the ductor roller of an inking unit - hereinafter referred to as "ductor” - usually has its own drive.
  • the speed of rotation of the ductor makes it possible to control the amount of ink which is fed into the inking unit.
  • the ink is first transferred from the ductor to a so-called film roller.
  • An inking unit includes a number of other rollers, such as applicator rollers, distributor rollers or Transfer rollers. These rollers form a so-called roller mill, which transfers the ink film from the film roll to the forme cylinder.
  • the specified gear ratios do not provide a way to affect the energy requirements of the printing unit.
  • the rubber layers are flexed.
  • shear forces occur at different surface speeds which lead to friction losses and increased wear of the roll surfaces.
  • the fact that the speed of the ductor is used as a manipulated variable for the ink supply, is also historically conditioned: If the printer wants to influence the ink supply over the entire printing width, he can achieve this without great effort by means of the ductor speed.
  • the alternative to take the position of all color screws, is much more complex.
  • the duct speed is usually preset as a function of the production speed automatically according to a so-called 1-run-up curve and can be adjusted proportionally to the preset value.
  • a disadvantage of this procedure is that the image-dependent variation of the color decrease over the width of the inking unit is not optimally taken into account.
  • the present invention overcomes the disadvantages mentioned with a printing unit according to claim 1 and a method for operating the printing unit according to claim 7.
  • the printing unit according to the invention offers the possibility of adjusting operating parameters during the printing process and thereby optimizing the energy consumption and the wear of the components. Further properties of the printing unit emerge from the subclaims.
  • the printing unit is the printing unit of a printing press, in particular a rotary printing press for newspaper printing, in particular the printing unit of a wet offset printing machine, the printing unit has a printing cylinder, at least one forme cylinder with an engagable with the forme cylinder inking unit.
  • the printing unit may additionally have a dampening unit.
  • the inking unit has a ductor which transfers color from an ink supply to a film roller.
  • the inking unit furthermore has at least two further rollers, for example application rollers, transfer rollers or distributor rollers, which form a compactor which extends between the forme cylinder and the ductor.
  • the ductor and the film roller are gear-coupled, that is, connected to each other by means of a transmission, so that the single roller of one of the two rollers, the other roller is driven along via the transmission.
  • Rolls of a printing unit can basically be classified according to the nature of their mechanical drive. A distinction is made between different groups, which are briefly explained below for clarity.
  • One group includes all of the rollers that are coupled to the form cylinder by mechanical transmissions and driven by a single-drive motor that drives one of the cylinders or one of the group's rollers. This group is called a cylinder-driven group.
  • One group contains all of the rollers which are coupled to the ductor via mechanical gears and driven by a single-drive motor which drives the ductor or one of the group's rollers.
  • This group is called a duct-driven group.
  • the film roll belongs to the group of duct-driven rolls.
  • rollers There may be other rolls or groups of rolls coupled directly or via mechanical gears to other engines. These rollers are referred to as intermediate driven rollers.
  • a motor and a corresponding drive are required. It does not matter for the implementation of the invention, in which way the mechanical coupling of the engine is made to the roller group.
  • the motor may be coupled to the group via an axial connection or by means of toothed belts, gears, chains, shafts or other mechanical devices.
  • the motor may be a DC motor, an AC motor or, for example, a three-phase motor. It can be a synchronous motor or an asynchronous motor. In particular, it may be a hollow shaft motor. This can for example be installed in a roller of the group.
  • the drive of the group of form cylinder driven rollers is position-controlled.
  • the drive of the other driven rollers can be position-controlled, speed-controlled or torque-controlled. In particular, it is possible to automatically switch between the control types or to adapt the control parameters to different operating conditions.
  • An advantageous embodiment of the invention has corresponding devices for measuring the variables to be controlled of the respective groups of driven rollers.
  • These include, for example, encoders for measuring the angular position or the speed.
  • encoders may e.g. be mounted on the axis of one of the rollers of the group in question, or on another component of the transmission.
  • donors can also be integrated in the engine. It is also possible to evaluate operating parameters of the drive system in order to determine, for example, the torque of the motor.
  • a combination of the types of control takes place.
  • manipulated variables are automatically adjusted to approximate measured values (actual value) to a desired value (setpoint).
  • the deviations from the actual and setpoint represent errors that are minimized by the control system or kept below a certain threshold.
  • the error may be in the form of a position error, for example, a position control attempts to minimize or eliminate this error.
  • a combination of the different modes of operation is achieved by weighting the errors (e.g., position, rotational speed, torque) differently. It is possible, for example, to set a position-controlled operating mode at low speeds, and to select a predominantly speed-controlled or torque-controlled operating mode at higher speeds. The transition of one operating mode into another can take place, for example, by means of a stepwise change of the mechanical conditions.
  • the mechanical conditions are determined, for example, by the following variables: delivery of the rolls (distances of the rolls), contact force of the rolls to each other, size of the contact strip between two contacting rolls (nip), rotation speed of a roll, relative surface speed of two or more rolls (Leading) and other variables that are changeable only by mechanical influence in the printing press.
  • Another way to switch between different operating modes is to select the current value of the new controlled variable immediately before changing the controlled variable. This setpoint can then, for example, gradually after changing the operating mode to be changed. Thus, a change of mode can be done without causing an abrupt change in the mechanical conditions.
  • a deviation of the surface speed of two superimposed rolling rolls is referred to as lead or lag.
  • a lag can be considered as a negative lead.
  • advance will be used to mean both positive and negative overshoot.
  • Overfeed may be desirable, for example, to better rub the ink. Too large a lead between the rollers and the forme cylinder may be disadvantageous because it may be e.g. accelerates the wear of a roller or the wear of the printing form or can lead to printing defects.
  • rollers that are not coupled to a motor by means of mechanical transmissions, such rollers are referred to herein as passive rollers.
  • the passive rollers form a separate group. Rollers whose surfaces are in contact with each other may but need not belong to the same group of rollers.
  • the two rolls are referred to as friction-coupled, or it is said that the two rolls have a pure friction coupling on their contact line.
  • a passive roller must be frictionally coupled to at least one driven roller in order to be rotated.
  • Passive rollers have the characteristic that no mechanical gears are needed to drive them. They may also be friction-coupled to two or more rolls of the same group or different groups. In particular, can a passive roller coupled to a plurality of rollers having different surface speeds.
  • the frictional forces acting on the contact lines between the rollers are tangential to the surface of the rollers.
  • the passive roller is rotated at a surface speed that is between the highest and lowest surface speeds of the rollers friction-coupled to it. This is done in such a way that the sum of the torques acting on the passive roller disappears, thus minimizing the stress on the rollers involved and thus reducing the wear.
  • the inking unit has at least one passive roller, which is frictionally coupled to at least two driven rollers.
  • the at least one passive roller is friction coupled to at least two rollers which are not both members of the same group of driven rollers.
  • the axial movement of the wheels can be controlled by means of gears or e.g. by separate drives (motor, magnet, pneumatics) or e.g. by "Scandrive gearbox" (during rotation, an axial movement is forced by means of a gearbox).
  • the speed of the ductor and film roller is set by the gearbox so that the film roller rotates at a higher speed than the single-driven ductor.
  • any desired speed ratio between the ductor and film roller can be adjusted via the transmission by appropriate design measures, if appropriate, the ratio of the two roller rotational speeds can also be adjustable, regulated and / or adjustable via the transmission.
  • the transmission can be a gear transmission, a toothed belt or chain transmission or any other transmission with which a rotation of a first rotation body can be transmitted to a second rotation body, changed and / or adjusted.
  • the gear can permanently couple the ductor and the film roller, so that a rotational movement of the driven roller always causes a rotational movement of the coupled thereto via the gear roller / n, but the coupling can also be such that the not individually driven roller to the individually driven roller before the start of the single drive or single drive can be switched on and off of this or can, or the individually driven roller to the not individually driven roller according to and can be turned off.
  • the on / off meant here is the time of the start of the on / off, can be specified in the program of the printing press or caused by the operator by hand. This point in time may depend on the running speed of the printing press, the running time of the machine or on other factors, which are predetermined for example in the machine control.
  • a display is to be provided which shows the operating personnel in which position the rollers are located relative to one another.
  • no start of printing is possible if it is determined by means of suitable sensors that the driven roller and the drive-connected roller (s) are not coupled via the transmission, or it can be a warning signal, an optical or audible, are generated when an actual situation on the transmission does not coincide with a predetermined for example in the machine control target situation.
  • the gear coupling the ductor to the film roll may be configured such that a change in the peripheral speed of the single-driven roller changes the peripheral speed of the non-individually driven roller such that a Size ratio between the peripheral speeds of the two rolls constant, that is always the same.
  • the peripheral speed of the non-individually driven roller changes so that the size ratio between the peripheral speeds changes, for example, as the peripheral speed of the single driven roller increases, the size ratio between the peripheral speeds decreases means that the co-driven via the gear roller is accelerated in proportion less than the individually driven roller.
  • the ratio of the peripheral speeds is increased, that is, the non-individually driven roller in proportion to experience more acceleration than the individually driven roller.
  • the film roll may have an overfeed with respect to the forme cylinder.
  • the peripheral speed of the forme cylinder is transferred to rollers lying in the direction of the film roller.
  • the rotation of the rollers between the form cylinder and film roll can be done via gear or friction.
  • a pure friction coupling must exist on at least one roller. At this at least one point lead different advances of the form cylinder side or film roll side driven rollers to a slip between the rollers.
  • the ductor and the film roll belong to the same group of driven rolls.
  • the printing unit thus has at this point a degree of freedom less than printing units of the prior art.
  • the peripheral speed of the film roll driven rolls can be adjusted independently of the peripheral speed of the die cylinder driven rolls, whereby the printing system roll system gains an extra degree of freedom.
  • the printing unit may include a dampening unit. This may have its own drive, or at least one group of driven rollers. It may also contain passive rollers. The relationships described above with regard to wear optimization through the use of passive rollers in the inking unit apply in the same way to the rollers of a dampening unit. Also, a printing unit has more degrees of freedom in terms of its adjustment when at least one roller of the dampening unit belongs to a group of driven rollers.
  • the printing unit may, in addition to the inking unit and dampening unit, comprise further components, such as a cylinder washing apparatus, which are well known in the art and therefore are not separately mentioned and / or treated here.
  • a cylinder washing apparatus which are well known in the art and therefore are not separately mentioned and / or treated here.
  • the peripheral speed of the film roller which is determined either by the single drive or by the gear coupling, are transferred directly or via intermediate rollers by frictional forces on the distributor roller or the distributor rollers.
  • the peripheral speed of the distributor roller is determined by the drive of the inking unit or the one inking roller, and no longer, as known in the prior art, predetermined solely by means of appropriate gear connections of the peripheral speed of the forme cylinder. Not equal circumferential speeds (positive or negative lead) can improve the color trimming in the roller mill.
  • FIG. 1 is a printing unit according to the prior art shown. All rollers, with the exception of the ductor 9 are coupled via gearbox with the forme cylinder 2.
  • an inventive printing unit 20 is shown schematically.
  • the film roll 8 belongs to the group of duct-driven rolls.
  • the ductor 9 has a Motor 11 on. With this motor 11, the ductor 9 is driven.
  • the ductor 9 is coupled via a gear with the film roller 8 so that during a rotational movement of the directly driven ductor 9, the film roller 8 is rotated via the transmission.
  • the coupling of the two rollers may be fixed, but it is preferably formed so that the film roller 8 on the rotating ductor 9 on and can be turned off, or the ductor 9 with the ink fountain 15 to the film roller 8 on or.
  • the ductor 9 can be turned off by this.
  • the ductor 9 can be rotated independently of the printing operation, for example, to set a stable color setting before starting printing.
  • the gear connects the two rollers 8, 9 so that the size ratio between the peripheral speed of the ductor 9 and the peripheral speed of the film roller 8 always remains the same.
  • the size ratio of the peripheral speeds between the ductor 9 and the film roller 8 may be 1: 5, 1:10 or 1:20, that is, the peripheral speed of the film roller 8 is always five times, ten times or twenty times as large as that of the ductor 9.
  • FIG. 3 shows an embodiment in which the dampening roller 12, the dampening driver 13 and the rider roller 14 belong to the group of form cylinder driven rollers.
  • the inking rollers 3 and 4, the transfer roller 6, the film roller 8 and the ductor 9 belong to the group of duct-driven rollers.
  • the riders 5 and 7 are passive rollers.
  • the engine 10 of the cylinder-driven group acts on the impression cylinder.
  • the motor 11 of the duct-driven rollers acts on the ductor 9.
  • the rollers 5 and 7 may be, for example, traversing rollers, such as those from the DE 10 2008 012 385.4 are known.
  • FIG. 4a shows a detail in which the engine 11 of the group of duct-driven rollers is coupled to the ductor 9.
  • FIG. 4b shows a detail in which the engine 11 of the group of duct-driven rollers is coupled to the film roller 8.
  • FIG. 5 shows an embodiment in which the dampening driver 13, the inking roller 4, the transfer roller 6, the film roller 8 and the ductor 9 belong to the group of duct-driven rollers.
  • the wheels 5 and 7, the inking roller 3, the dampening roller 12 and the dampening roller 14 are passive rollers.
  • the engine 11 of the duct-driven rolls acts on the ductor 9. Between the passive rollers 3 and 5 is Fritationskopplung. This requires that the frictional force between the passive rollers must be smaller than the frictional force between the passive rollers and the driven rollers contacting them.
  • FIG. 6 shows an embodiment in which the film roll 8 belongs to the group of ductor-driven rolls which is coupled to the ductor 9 via a gearbox so that, for example, the ratio of the surface speed of the ductor to the film roll is 1: 5.
  • Motor 11 of the duct driven rollers acts on the ductor 9. All other rollers, with the exception of the stirrer 5, which is a passive roller, belong to the group of cylinders driven by a cylinder.
  • the slider 5 touches three of the cylinders driven by the cylinders 3, 4 and 6, of which it is jointly driven by friction.
  • the roller 7 and the film roller 8 are frictionally coupled. Thereby, the lead between the rollers 7 and 8 can be adjusted freely, whereby the inking unit receives an additional degree of freedom.
  • FIG. 7 shows an embodiment in which the film roll belongs to the group of duct-driven rolls.
  • Motor 11 of the duct-driven rollers acts on the ductor 9.
  • the dampening roller 12, the dampening driver 13 and the rider roller 14 are driven by a cylinder.
  • the motor 10 is coupled to the impression cylinder 1.
  • the applicator rollers 3 and 4, as well as the transfer roller 6 form an interposed group whose motor 16 is coupled to the transfer roller 6.
  • Reiber 5 and 7 are passively driven.
  • the slider 5 is frictionally coupled to three rollers 3, 4, and 6 of the same group.
  • the grater 7 is frictionally coupled to two rollers 6 and 8 of different groups.
  • FIG. 8 shows an embodiment in which the rollers 12, 13 and 14 of the dampening unit form a separate group of driven rollers, which are coupled to the motor 17. Likewise, the rollers 3, 4, 5, 6 and 7 form a separate group of driven rollers, which are coupled to the motor 16. Film roller 8 and ductor 9 are ducted.
  • FIG. 9 shows an embodiment in which the rollers 12 and 14 of the dampening unit form a separate group of driven rollers, which is coupled to the motor 17.
  • the rollers 3, 4, 6, 8 and 9 are ducted.
  • the drivers 5 and 7, as well as the dampening driver 13 are passive rollers.

Landscapes

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

Claims (10)

  1. Groupe d'impression d'une machine à imprimer, en particulier d'une machine à imprimer rotative, comportant au moins :
    a) un cylindre d'impression (1),
    b) un cylindre porte-plaque (2),
    c) un dispositif d'encrage pouvant être appliqué sur le cylindre porte-plaque, ayant au moins
    c1) un preneur (9),
    c2) un rouleau de film (8) et
    c3) un râtelier à rouleaux constitué de deux ou plus de deux rouleaux,
    dans lequel
    d) le preneur (9) et le rouleau de film (8) sont couplés par engrenages et ont un mécanisme d'entraînement séparé (11), et
    e) il existe un couplage par friction sur au moins une ligne de contact entre un rouleau du râtelier à rouleaux et un autre rouleau du groupe d'impression ou sur le cylindre porte-plaque (2), caractérisé en ce que
    f) le dispositif d'encrage comporte au moins un rouleau passif (7) qui est couplé par friction avec au moins deux rouleaux entraînés (6, 9), les deux rouleaux entraînés (6, 9) n'appartiennent pas au même groupe de rouleaux entraînés et les deux rouleaux entraînés (6, 9) ont des vitesses de surface différentes.
  2. Groupe d'impression selon la revendication 1, caractérisé en ce qu'au moins un rouleau (3, 4, 5, 6) du dispositif d'encrage est couplé à un mécanisme d'entraînement qui n'est pas relié au cylindre porte-plaque (2) par l'intermédiaire d'un engrenage.
  3. Groupe d'impression selon l'une des deux revendications précédentes, caractérisé en ce qu'au moins un des rouleaux (3, 4, 5, 6) est entraîné par friction.
  4. Groupe d'impression selon l'une des revendications précédentes, caractérisé en ce que le mécanisme d'entraînement (11) entraînant le preneur (9) comporte une commande d'entraînement au moyen de laquelle la position, la vitesse, le couple ou une combinaison de ces grandeurs peut être réglé.
  5. Groupe d'impression selon la revendication précédente, caractérisé en ce que chaque groupe de rouleaux entraînés comporte respectivement une commande d'entraînement.
  6. Groupe d'impression selon l'une des revendications précédentes, caractérisé en ce que le groupe d'impression comporte en outre au moins un dispositif de mouillage et au moins un rouleau du dispositif de mouillage appartient à un groupe de rouleaux, entraînés.
  7. Procédé pour faire fonctionner un groupe d'impression selon l'une des revendications 1 à 6, caractérisé en ce que le mode de fonctionnement du mécanisme d'entraînement de preneur (11) et/ou d'au moins un des mécanismes d'entraînement intermédiaires (17, 16) peut être changé en cours de production.
  8. Procédé selon la revendication 7, dans lequel les relations mécaniques sont changées progressivement lors du passage d'un mode de fonctionnement à un autre mode de fonctionnement.
  9. Procédé selon l'une des deux revendications précédentes, dans lequel une avance entre les rouleaux d'un dispositif d'encrage est réglée pendant l'opération d'impression.
  10. Procédé selon la revendication précédente, dans lequel le réglage de l'avance s'effectue en fonction du type de production ou des matériaux utilisés, tels que les encres.
EP09156152.2A 2009-03-25 2009-03-25 Groupe d'impression et procédé pour l'opérer Not-in-force EP2233291B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09156152.2A EP2233291B1 (fr) 2009-03-25 2009-03-25 Groupe d'impression et procédé pour l'opérer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09156152.2A EP2233291B1 (fr) 2009-03-25 2009-03-25 Groupe d'impression et procédé pour l'opérer

Publications (2)

Publication Number Publication Date
EP2233291A1 EP2233291A1 (fr) 2010-09-29
EP2233291B1 true EP2233291B1 (fr) 2014-03-12

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016205346A1 (de) * 2016-03-31 2017-10-05 Koenig & Bauer Ag Antriebsanordnung für einen Farbduktor einer Bogenverarbeitungsmaschine, ein Werk für eine Bogenverarbeitungsmaschine sowie ein Verfahren zum Betreiben einer Antriebsanordnung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20003767U1 (de) * 2000-03-01 2000-04-27 Roland Man Druckmasch Farbwerk für eine Druckmaschine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19520841C2 (de) * 1995-06-08 2003-12-04 Roland Man Druckmasch Farbwerk für ein Offsetdruckwerk und Verfahren zum Einfärben und Feuchten der Druckform
DE19623224C1 (de) 1996-06-11 1997-09-11 Roland Man Druckmasch Antrieb für eine Druckmaschine
DE19701219A1 (de) * 1997-01-16 1998-07-23 Heidelberger Druckmasch Ag Verfahren zur Steuerung der Farbgebung beim Drucken
DE102004042264A1 (de) * 2004-09-01 2006-03-02 Koenig & Bauer Ag Verfahren zum Betreiben eines Rotationskörpers mit Enzelantrieb
DE102005041184A1 (de) 2005-08-31 2007-05-10 Koenig & Bauer Ag Rotationsdruckmaschine mit einer Vorrichtung zum Fixieren eines eigenmotorisch angetriebenen Rotationskörpers und ein Verfahren zu diesem Zweck
DE102006030290B3 (de) * 2006-03-03 2007-10-18 Koenig & Bauer Aktiengesellschaft Druckwerk

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20003767U1 (de) * 2000-03-01 2000-04-27 Roland Man Druckmasch Farbwerk für eine Druckmaschine

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