EP1036658A2 - Procédé pour mouiller une plaque offset et dispositif de mouillage d'une machine d'impression planographique - Google Patents

Procédé pour mouiller une plaque offset et dispositif de mouillage d'une machine d'impression planographique Download PDF

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Publication number
EP1036658A2
EP1036658A2 EP00103319A EP00103319A EP1036658A2 EP 1036658 A2 EP1036658 A2 EP 1036658A2 EP 00103319 A EP00103319 A EP 00103319A EP 00103319 A EP00103319 A EP 00103319A EP 1036658 A2 EP1036658 A2 EP 1036658A2
Authority
EP
European Patent Office
Prior art keywords
dampening
roller
dampening roller
planographic printing
unit
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.)
Granted
Application number
EP00103319A
Other languages
German (de)
English (en)
Other versions
EP1036658A3 (fr
EP1036658B1 (fr
Inventor
Bruno Eltner
Bernd Müller
Mathias Zuber
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1036658A2 publication Critical patent/EP1036658A2/fr
Publication of EP1036658A3 publication Critical patent/EP1036658A3/fr
Application granted granted Critical
Publication of EP1036658B1 publication Critical patent/EP1036658B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/26—Damping devices using transfer rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/36—Inking-rollers serving also to apply ink repellants

Definitions

  • the invention relates to a method for moistening a rotating Planographic printing plate via a plate which indirectly dampens the planographic printing plate Ink application roller and a connecting roller lying against it which is supported by a dampening roller that dampens the planographic printing form, according to the preamble of claim 1.
  • the invention further relates to a dampening unit of a planographic printing press, with a first dampening unit roller, which rests exclusively on a dampening roller, after the Preamble of claim 7.
  • Modern offset printing presses have inking and dampening units at their coupled operation of the dampening solution partially indirectly via a Moist application roller and partially indirectly via one of the dampening application rollers immediately following in the cylinder rotation direction of the printing form cylinder Ink roller is applied to the printing form and the Dampening roller applies a dampening solution ink emulsion to the printing form applies.
  • the indirect dampening solution application is carried out by a Ink application roller with the connecting roller coupling with the dampening application roller enables.
  • a wet inking unit of such an offset printing machine is shown in the DE 87 16 847 U1 described.
  • the moist inking unit points to indirect Moistening an inking roller and a dampening roller on one
  • the inking roller forms one of the inking roller and the dampening roller intermediate connecting roller.
  • the type of rotary drive one that is, only on the dampening roller lying against the dampening roller whether this z. B. driven by friction from the dampening roller, and to the peripheral speed of the dampening roller is in the Utility model made no statement.
  • a disadvantage of this wet inking unit is that the dampened printing form, especially when Printing fuzzy substrates, washed comparatively often must, because of a lack of rolling slip between the Dampening roller and the printing form so-called slugs in the printed image Place the free paper fibers causing them on the printing form.
  • the common one Washing leads to print interruptions when printing high-volume jobs, which are associated with restarting waste every time.
  • a dampening and inking unit described in DE 31 46 223 C2 is a Another example of the formation of such offset printing machines. With this dampening and inking unit cannot solve the problem described above solve because they are here unusually as an inking roller designated dampening roller with plate cylinder peripheral speed must rotate, as is expressly emphasized in the patent specification.
  • dampening systems have to meet the highest requirements. By a can only roll on the dampening roller these requirements when designing dampening systems correspond.
  • a dampening unit described in DE 91 10 345 fulfills the requirements with regard to a template-free dampening solution application only with pure Direct humidification.
  • This dampening unit circuit has one Dampening roller on one over its steering knuckle over gears and thus positively driven dampening roller and is one closest inking unit roller separately. Unfavorable on this dampening system is that a dampening system for indirect dampening a Plate cylinder is not provided.
  • the employment of the dampening roller to the closest inking unit roller either serves to use the Damp applicator roller as only printing ink on the plate cylinder applying application roller or as a washing circuit.
  • the dampening roller is switched off from the dampening roller mounted on the frame in a side frame connected so that a stencil-free indirect dampening with this Dampening is also not possible for this reason.
  • DE 29 02 228 C2 also includes an inking unit and a dampening unit described in which an inking unit roller with indirect dampening about the surface speed of the plate cylinder corresponding surface speed and the Dictates the surface speed of an adjacent dampening roller, which thus rolls on the plate cylinder without slippage. Only from the The dampening roller runs on ink supply of separate pure direct dampening at a peripheral speed which is about 10% above or below the Circumferential speed of the plate cylinder lies. Very disadvantageous about this Dampening is that this does not have the dampening film on the Moist application roller smoothing and only on this Dampening roller is provided adjacent dampening roller.
  • Dampening solution from a water box roller onto the dampening roller transmitting dampening roller is missing to effectively prevent a Stenciling required constructive requirement, which the concern is only on the dampening roller.
  • the task is accomplished by a dampening process with the characteristics of claim 1 and by a dampening system with the features of Claim 7 solved.
  • the inventive method for moistening a rotating Planographic printing plate via a plate which indirectly dampens the planographic printing plate Inking roller and a connecting roller lying against the latter, on which a dampening roller dampens the planographic printing form is present is characterized in that the dampening roller at Moistening with the peripheral speed of the planographic printing plate deviating circumferential speed rotates.
  • the cleaning effect is the simultaneous application of a printing ink / dampening solution emulsion through the inking roller onto the planographic printing form given.
  • the connecting roller with the inking roller as well also with the dampening roller in peripheral rolling contact so that the dampening solution from the dampening roller over the connecting roller the inking roller is conveyed and on the inking roller printing ink to an optimal ink / dampening solution mixture for printing blended.
  • a particularly advantageous further development of the method according to the invention is characterized in that a first Dampening roller during moistening only on the dampening roller and is not in contact with any other roller and therefore unlike one two rollers adjacent to the transfer roller is particularly well able the dampening solution into the ink that has reached the dampening roller incorporate and smooth the dampening film in the circumferential direction.
  • Another process design is characterized in that a lateral oscillation of the first dampening roller to smooth the The dampening solution film takes place in the axial direction. This way, a so-called axial stenciling is very safely avoided and occurs particularly thorough mixing of those that got onto the dampening roller Printing ink with the fountain solution on it to a printable Emulsion.
  • Another process design is characterized in that in addition to the already mentioned first dampening roller still another Dampening roller to equalize that on the dampening roller existing dampening solution film rolls on the dampening roller.
  • This is an additional second dampening roller, just like the first Dampening roller, not a transfer roller, but only one single roller, namely the dampening roller. It has been shown that when using the inking unit to which the inking roller belongs, as a so-called short inking unit, increased requirements for incorporation the dampening solution into the ink on the dampening roller consist. In the so-called short inking unit operation, the Planographic printing form not all of the inking rollers of the total Inking unit used.
  • Another process design is characterized in that axial smoothing of that on the dampening roller Dampening film the second dampening roller laterally oscillates.
  • the first dampening roller can be used in the axial direction stand still while the second dampening roller rotates axially, however, both the first dampening roller and preferably also oscillate the second dampening roller at the same time in the axial direction. The so-called In this way, axial stenciling is avoided with absolute certainty.
  • the dampening roller does not change in its axial direction.
  • the dampening applicator roller can axially change applications, whereby this oscillation via axial friction driving from the axially oscillating first dampening roller and / or the axially oscillating second Dampening roller can be driven.
  • the use of two on the dampening roller that is stationary in the axial direction oscillating dampening rollers cause a high stability of the Dampening solution application on the planographic printing form also in case of disturbances such as. B. Print interruptions in the meantime changed printing conditions.
  • This dampening system is particularly good for carrying out the method according to the invention suitable.
  • indirectly moistening a The planographic printing plate only works on the dampening roller and otherwise no other roller rolling dampening roller equalizes the Dampening solution film, so that stenciling is largely avoided.
  • the dampening roller is located in this indirect moistening Roll contact to the connecting roller, so that the dampening solution from the The dampening roller reaches the inking unit via the connecting roller.
  • On the connecting roller is located next to the dampening roller Inking unit roller, which is preferably the one for indirect moistening of the Flat printing form serving ink application roller is.
  • the dampening roller By driving the dampening roller using the rotary drive there are advantageous structural embodiments of the dampening unit.
  • the Dampening roller are driven by the rotary drive.
  • the dampening roller To the rotary drive can rotate the dampening roller via a gear drive, the dampening roller only the dampening roller drives rotationally via friction.
  • the circumferential surface area can do this the dampening roller should be roughened and with, for example well-shaped depressions and / or dome-shaped elevations be provided.
  • the dampening roller in this case has a soft and for example, circumferential surface made of rubber.
  • a second Variant of the common drive of the dampening roller and the Damping roller by the rotary drive is that not only the dampening roller via a gearbox but also the dampening roller is driven by a rotary drive gear.
  • a rotary drive gear Preferably is a non-rotatably connected and coaxial with the dampening roller arranged gear in meshing engagement with a rotationally fixed with the Dampening roller connected and arranged coaxially to the latter
  • Another gear, which is driven by a rotary drive Axis is seated or in meshing engagement with one of the rotary drive driven third gear is located.
  • the rotary drive that rotatively drives the dampening unit turret can be used by everyone mentioned drive variants of the dampening roller, d. H. about Friction driving or by means of a gear, the planographic printing form rotatively driving electromotive rotary drive of the planographic printing machine or one to this additional electromotive single drive of the dampening system his.
  • the rotary drive is an electric motor, which via a gearbox rotates the printing form cylinder, which is connected to the Dampening dampening flat printing form carries.
  • This electric motor can for example one of the printing units of the planographic printing press at the same time rotary driving main drive of the planographic printing machine.
  • the electronic Control device independent of the rotary drive of the planographic printing form be controllable.
  • adjustable or programmable percentages that are related to the peripheral speed of the planographic printing form and which the speed difference of the peripheral speed of the Dampening roller and the dampening roller to the peripheral speed describe the planographic printing form.
  • An advantageous further developing the dampening system according to the invention Embodiment is characterized in that the adjusting device in this way is formed that in the employment of the dampening roller to the Connection roller a simultaneous displacement of the dampening roller is guaranteed so that their peripheral contact to The dampening roller is not lost.
  • the dampening roller is also at the removal of the dampening roller from the connecting roller in permanent system on the dampening roller can be carried with the latter.
  • their Adjustment device is designed such that first a shift of the Damp applicator roller from its distance to the connecting roller in their position on the connecting roller and subsequently one Adjustment of the dampening roller to the dampening roller takes place, whereby the dampening roller when moving from the distance position the position on the connecting roller temporarily from the Dampening roller releases.
  • the dampening roller is in this case Relocation of the dampening roller following the dampening roller trackable.
  • dampening system is characterized by that in addition to the already mentioned first dampening roller of the dampening unit this still includes a second dampening roller, which like the first dampening roller only on the dampening roller and no other other roller.
  • a dampening unit designed in this way is in particular to carry out a further training the method according to the invention and the process design already described in this connection suitable.
  • dampening system is characterized by that for the employment of the dampening roller on the connecting roller Dampening roller, the first dampening roller and the second Dampening roller can be displaced simultaneously by means of the adjusting device, without the peripheral contact of the first dampening roller Dampening roller and the second dampening roller The dampening roller is lost during the relocation.
  • This variant is especially when the dampening unit is connected to the inking unit while it is running Moisturizing the planographic printing plate by the dampening system advantageous because with such a trained dampening system both by the first Dampening roller caused any touchdown strips as well as that second dampening unit caused any contact strips on the Moist application roller can be safely avoided.
  • the dampening roller, the first dampening roller and the second dampening roller can be in one common, e.g. B. bearing plate-shaped roller carrier each rotatable be stored, by adjusting the roller support, for example by swiveling the roller carrier, the dampening roller from the Parking position in the anti-position on the connecting roller is adjustable and the roller carrier the first dampening roller in permanent contact with Dampening roller and the second dampening roller also in Permanent contact with the dampening roller is maintained. In some use cases also a relocation of the dampening roller from the parking position to the Position on the connecting roller, then starting the first one Dampening roller and / or the second dampening roller to the already in the Adjusted dampening roller position possible.
  • the Adjustment device consists of an eccentric bearing.
  • the Adjustment device comprise a remotely controllable actuator, by means of which the eccentric bearing for moving the dampening roller to the Connection roller and for parking the dampening roller from the Connection roller is rotatable.
  • the eccentric bearing requires little Construction space and is for example in the structurally simple version as Eccentric bushing can be manufactured inexpensively.
  • Another embodiment is characterized in that the Planographic printing plate and dampening roller rolling on the connecting roller when moistening the planographic printing plate with the peripheral speed the planographic printing form deviating peripheral speed from Rotational drive can be driven.
  • a between the planographic form and the Effective rolling slip causes a cleaning of the dampening roller Planographic printing form, by adding fluffy paper fibers through the dampening roller can be removed from the planographic printing form.
  • the slip preferably results from the fact that the rotary drive Dampening roller with a relative to the peripheral speed of the Planographic printing plate drives lower peripheral speed.
  • the Damp applicator roller from the rotary drive via a positive gear be drivable.
  • the dampening roller can be drivable by the first dampening roller by means of friction entrainment, which in turn from a rotary drive to a positive one Gear can be driven.
  • the method is preferably for moistening an im Offset printing process printing planographic printing plate and can also be used for Moistening of a flat printing form printing in direct flat printing (dilitho) be used.
  • the planographic printing press can be a dilitho rotary printing press and is preferably an offset rotary printing press, by means of which a printing material web or Printing material sheets are printable.
  • the invention is based on a preferred Embodiment explained with reference to the drawing.
  • Fig. 1 is designed as a sheet-fed rotary printing press Flat printing machine 8 shown with at least one printing unit 13.
  • the Printing unit 13 consists of a printing form cylinder 14 with thereon clamped planographic printing form 1, a substrate carrying Impression cylinder 16 and a printing ink image from the planographic printing form 1 blanket cylinder 15 transferred to the substrate.
  • this is an inking unit designed as a lifter inking unit 42 with the planographic printing form 1 first in each printing form rotation inking roller 2 and three more, the roller in Cylinder rotation direction assigned downstream inking rollers.
  • a dampening unit 7 is assigned to it, which either connect to or from the inking unit 42 can be separated.
  • the rotary drive 11 is an electric motor and drives over a gear 17 consisting of meshing gears the cylinders 14, 15 and 16 for printing and during the moistening.
  • the dampening unit 7 consists of a trough-shaped fountain solution container 23, in which an immersion roller 22nd immersed, which draws the fountain solution from the fountain solution tank 23 and to a transfer roller 21 in contact with it.
  • the Transfer roller 21 is rotatable in a around the axis of rotation Dip roller 22 pivoted roller carrier 45 mounted.
  • the rollers 21 and 22 are via a gear transmission 20 with each other and with that as a Electric motor trained rotary drive 12 connected in terms of drive.
  • the Transfer roller 21 transfers the fountain solution film on it a dampening roller 4.
  • the dampening roller 4 is in her a planographic printing form 1 adjacent position and carries the from Transfer roller 21 dampening solution transferred to the planographic printing plate 1 seen in the direction of rotation of the dampening roller 4 in constant contact at the contact point of the dampening roller following the transfer roller 21 and the contact point of the Dampening roller 4 with the planographic printing plate 1, a first Dampening roller 5 and the contact point of the dampening roller 4 with the Planographic printing form 1 below and the contact point of the dampening roller 4 with the transfer roller 21 preceded by a second dampening roller 6 on.
  • a rotary drive 10 designed as an electric motor drives via Gear transmission 18.1, 18.2 to the first dampening roller 5.
  • the Rotary drive 10 also drives the dampening roller 4.
  • 4 shows two drive variants in one picture.
  • On positive drive of the dampening roller 4 by the rotary drive 10 can be caused in that the rotary drive 10 Dampening roller 4 drives via a gear transmission 18.3, 18.4.
  • the Gear transmission 18.3, 18.4 can for example consist of one with the first Dampening roller 5 connected in a rotationally fixed manner and arranged coaxially with it Gear 18.3 consist, which meshes with a gear 18.4 Engagement is arranged coaxially with the dampening roller 4 and with this rotation test is connected.
  • the drive of the dampening roller 4 by the Rotary drive 10 can also be effected in that the rotary drive 10 drives the first dampening roller 5 via the gear mechanism 18.1, 18.2 and the latter by means of the frictional application of the dampening roller 4 drives frictionally.
  • the gear transmission 18.3, 18.4 omitted.
  • the control device 40 controls the rotary drives 10 and 12 to one another coordinated and depending on the rotary drive 11, so that the Rotary drives 10 and 12 in the event of a change in printing speed corresponding increase or decrease in the peripheral speed of the Planographic printing form 1 the drive 11 in the corresponding Direction of speed adjustment can be readjusted as follows.
  • Rotary drives 10 and 11 not two different electric motors but one and the same electric motor.
  • control device 40 also controls an actuator 24 belonging to an adjusting device 9, which a Reciprocating cylinder to which pressure fluid can be applied and, for example, a Pneumatic cylinder is.
  • the adjustment device 9 enables an adjustment of the Dampening roller 4 from that shown in Fig. 2, from a Connection roller 3 to the inking unit 42 in the position 4.1 in a Fig. 3 shown, on the connecting roller 3 position 4.2 and from position 4.2 back to position 4.1.
  • the connecting roller 3 does not need to be moved to couple the dampening unit 7 to the inking unit 42 be and can be stored in a fixed or frame fixed pivot bearing.
  • an adjustment device 9 is required associated and designed as a first eccentric bushing 27 Eccentric bearing by means of the actuator 24 about its central axis 36 rotatable.
  • the eccentric bearing 27 carries one as an adjustable bearing plate trained roller carrier 25, in which a roll neck 31 of the The dampening roller 4 is rotatably mounted and through which an axle 32 the first dampening roller 5 is passed.
  • the first eccentric bearing 27 bears a second eccentric bearing 28, also designed as an eccentric bushing, which can be rotated manually about its central axis 37.
  • the latter and thus the eccentric bearing 28 can be rotated by means of a tool which can be inserted or plugged into the screw 30.
  • the eccentric bearing 27 can be rotatably mounted about its central axis 36 in a side wall 41 by means of a rolling element or sliding bearing. By means of such rotary bearings, the rollers 4 and 5 and the eccentric bearing 28 can also be rotatably mounted.
  • the eccentricity e 27 describes the amount by which the central axis 35 of the first dampening roller 5 is offset from the central axis 36 of the eccentric bearing 27.
  • the eccentricity e 27 of the eccentric bearing 27 related to its central axis 36 is so large that a rotation of the eccentric bearing 27 by a certain angle of rotation causes a common displacement of the rollers 4 and 5 by the amount of the roller spacing W depending on the direction of rotation of the rotation of the eccentric bearing 27 to the connecting roller 3 either way or away.
  • the eccentricity e 27 can be approximately 15 mm.
  • a bore which rotatably receives the roll neck 32 penetrates the eccentric bearing 27 and its bush-shaped shoulder 33, which is thus also offset from the central axis 36 by the eccentricity e 27 .
  • the eccentric bearing 28 has a bore offset from its central axis 37 about the eccentricity e 28 , into which the socket shoulder 33 is rotatably inserted.
  • a Eccentric bearing 28 attached or molded socket paragraph 33 rotatable be inserted into the eccentric bearing 27.
  • the eccentric bearing 27 and 28 pivotally connecting socket instead of the Socket paragraph 33 both in the eccentric bearing 27 and in the Eccentric bearing 28 can be inserted.
  • the measure of eccentricity e 28 is significantly less than the measure of eccentricity e 27 and can be, for example, approximately 2 mm.
  • a rotation of the eccentric bearing 28 by means of the worm gear 29, 30 around the central axis 37 causes an increase or decrease in the axial spacing A of the rollers 4 and 5 relative to one another, depending on the direction of rotation, so that the strength of the pressing of the rollers 4 and 5 against one another can be set.
  • the variation of the center distance A is brought about by a displacement of the dampening application roller 4 towards or away from the first dampening roller 5 or by a displacement of the roller carrier 25 relative to the central axis 35.
  • the setting of the center distance A takes place within an adjustment range in which the contact pressure between the rollers 4 and 5 is sufficiently large for the rotational frictional engagement of the roller 4 by the roller 5 or in which the gears 18.3 and 18.4 remain in effective engagement with one another.
  • the gear 18.2 remains any common roller gap W producing or canceling Relocation of the first dampening roller 5 with the dampening roller 4 in constant effective engagement with the driving the gear 18.2 Gear 18.1.
  • the actuator 24 is preferably a pressurized fluid Extendable piston front surface and by pressurized fluid Retractable double-acting reciprocating piston cylinder rear surface, the Piston rod on the eccentric bearing 27 is articulated eccentrically.
  • the the rotation the first dampening roller 5 driving rotary drive 10, which, like already described, one of the rotary drive 11 of the planographic printing form 1 separate electric motor or the rotary drive 11 itself can be over another gear transmission 19 with a traversing drive 39 for axial Oscillation of the first dampening roller 5 coupled in terms of drive.
  • a second Dampening roller 6 In between the contact point of the dampening roller 4 to Connection roller 3 and the contact point of the dampening roller 4 for Transfer roller 21 lying peripheral region is a second Dampening roller 6 in constant contact with the dampening roller 4.
  • the second dampening roller 6 is a so-called rider roller, which is also designed as an axially oscillating friction roller.
  • the second Dampening roller 6 is rotatable in a roller carrier 26 which is fixed to the component stored.
  • the second dampening roller 6 is the relocations Moist application roller 4 in its positions 4.1 and 4.2 can be tracked by the Roller axis of the second dampening roller 6 in a compensating movement the second dampening unit roller 6 enables guidance in the roller carrier 26 is led.
  • a linear guide preferred for this purpose can, for example, consist of a round slot nut, which a roll neck of the second Dampening roller 6, as shown at least partially encloses as a bushing or which can be attached as a roller coaxially to the roll neck.
  • the Sliding block 37 is guided in a groove or a slot in the roller carrier 26 and attached to a coupling 44.
  • Such a schematic in FIGS. 2 and 3 indicated and unspecified guide is the second on both sides Dampening roller 6 arranged.
  • the dampening roller 4 and the second dampening roller 6 are rotatable in Coupling 44 stored.
  • an adjustment device not shown, for. B. a screw, the center distance and thus the press strip width is the Rollers 4 and 6 adjustable by adjusting the second dampening roller 6.
  • the second dampening roller 6 the displacement of the dampening roller 4 pivotally following Roller carrier 26 are held.
  • the second dampening roller 26 one in the Roller body has integrated so-called inner traversing drive 38, which additionally the rotary movement of the second dampening roller 6 into a positive-locking gearbox in an axial oscillation.
  • the Traversing drive 38 can be, for example, a cam mechanism.
  • the axial Oscillation of the second dampening roller 6 is from the rotary drive 10 the rotationally driving the second dampening roller 6 Dampening roller 4 causes.
  • roller 4 is the storage of the rollers 4 and 5 on the so-called drive side of the printing press shown.
  • the rollers 4 and 5 On this one opposite, not shown so-called operating side of the Printing machine 8, the rollers 4 and 5 in a substantially that Roller carrier 25 corresponding further roller carrier and in the Eccentric bearings 27 and 28 essentially corresponding others Eccentric bearings mounted.
  • the adjustment device 9 shown on the drive side can via a synchronization gear with the operator side, not shown Adjustment device be coupled so that both adjustment devices are rotatable simultaneously by the actuator 24.
  • eccentric bearing 27 In the simplest case it can the eccentric bearing 27 with respect to this, based on a vertical axis, Operator-side eccentric bearing designed in mirror image by a for Central axis 36 of the eccentric bearings and eccentric on both eccentric bearings attached connecting rod to be connected, so that tilting of the Rollers 4 and 5 are excluded when moving.
  • An advantage of the device shown in FIGS. 1 to 4 is not only that the dampening roller 4 with the moistening of the planographic printing plate 1 with deviating from the peripheral speed of the planographic printing plate 1 Circumferential speed rotates and thus located on the planographic printing plate 1 Contamination from this decreases. It is also advantageous that the first Dampening roller 5 from the rotary drive 10 during the moistening positively driven and the first dampening roller 5 on the Moist application roller 4 is present when the latter on the connecting roller 3rd is present. This opens up the possibility of also using the inking unit 42 coupled operation of the dampening unit 7 on the dampening roller 4 even dampening solution. There is also a rotary drive the dampening roller 4 both in their position 4.1 and in their Position 4.2 on frictional entrainment by the first dampening roller 5 possible.
  • the first dampening roller 5 is comparatively hard and, for example, metal and preferably has a rough peripheral surface or a surface which is structured with rough elevations and / or depressions and is chrome-plated.
  • dampening units DE 91 10 345
  • printing ink located on the first dampening unit roller 5 cannot dry on it, for example if the dampening unit 7 is in the operating mode shown in FIG. 2 direct humidification '' in the operating mode shown in Fig. 3
  • the adjusting device 9, the displaceable roller carrier 25 and the roller carrier 26 ensure that the dampening unit rollers 5 and 6 rest against both the dampening roller 4 attached to the planographic printing plate 1 and the dampening roller 4 set down from the planographic printing plate 1 and thus in permanent contact with the dampening roller 4.
  • dampening system 7 Another advantage over that known from the prior art and The above-mentioned dampening system consists in the fact that in the illustrated dampening system 7 the first lying exclusively on the dampening roller 4 Dampening roller 5 by means of an inking unit 42 assigned Cleaning device 43 can be washed.
  • the Cleaning device 43 comprises a z. B. trained as a spray tube Cleaning liquid supply to a roller of the inking unit 42 and one a roller of the inking unit 42 adjustable squeegee with one of the roller scraped ink collecting squeegee tray.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Plates And Materials Therefor (AREA)
EP00103319A 1999-03-16 2000-02-18 Dispositif de mouillage d'une machine d'impression planographique Expired - Lifetime EP1036658B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19911568A DE19911568A1 (de) 1999-03-16 1999-03-16 Verfahren zum Einfeuchten einer Flachdruckform und Feuchtwerk einer Flachdruckmaschine
DE19911568 1999-03-16

Publications (3)

Publication Number Publication Date
EP1036658A2 true EP1036658A2 (fr) 2000-09-20
EP1036658A3 EP1036658A3 (fr) 2001-03-21
EP1036658B1 EP1036658B1 (fr) 2003-12-03

Family

ID=7901089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103319A Expired - Lifetime EP1036658B1 (fr) 1999-03-16 2000-02-18 Dispositif de mouillage d'une machine d'impression planographique

Country Status (5)

Country Link
US (1) US6460455B1 (fr)
EP (1) EP1036658B1 (fr)
JP (1) JP4652517B2 (fr)
AT (1) ATE255499T1 (fr)
DE (2) DE19911568A1 (fr)

Families Citing this family (15)

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Publication number Priority date Publication date Assignee Title
DE10113338B4 (de) * 2001-03-20 2004-10-28 Koenig & Bauer Ag Verfahren und Vorrichtungen zum Antrieb einer Druckeinheit
US20030172818A1 (en) * 2002-03-13 2003-09-18 Marcel Motard Dampening system for a printing press
JP2003320644A (ja) * 2002-04-30 2003-11-11 Miyakoshi Printing Machinery Co Ltd 水着けローラ駆動装置
DE10328801B4 (de) * 2002-07-22 2014-10-09 Heidelberger Druckmaschinen Ag Vorrichtung zur Druckan- und -abstellung in einer Druckmaschine
JP2004109706A (ja) * 2002-09-19 2004-04-08 Ricoh Co Ltd ベルト駆動装置・転写駆動システム・画像形成装置
ITBO20030627A1 (it) * 2003-10-23 2005-04-24 Gd Spa Unita' di stampa di un nastro per una macchina automatica.
US20050183598A1 (en) * 2004-02-23 2005-08-25 Epic Products International Corporation Ink form roller drive for improving printing quality
US7225735B2 (en) * 2004-05-03 2007-06-05 Heidelberger Druckmaschinen Ag Method for roller adjustment in a printing press
JP2006062363A (ja) 2004-08-25 2006-03-09 Heidelberger Druckmas Ag 印刷機
DE102004042265B4 (de) * 2004-09-01 2018-06-28 Koenig & Bauer Ag Verfahren zum Befeuchten einer Druckform für den Offsetdruck
JP4786325B2 (ja) * 2004-12-21 2011-10-05 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 印刷機のアニロックス式インキ装置を洗浄する方法
FR2895310B1 (fr) * 2005-12-23 2009-04-17 Goss Int Montataire Sa Dispositif d'encrage et procede d'ajustement correspondant
DE102008062027B4 (de) * 2008-01-31 2018-05-17 Heidelberger Druckmaschinen Ag Druckmaschine mit einem Anilox-Farbwerk mit zugehöriger Wascheinrichtung
DE102008001860A1 (de) * 2008-05-19 2009-11-26 Manroland Ag Verfahren zum Betreiben einer Druckmaschine
DE102022129391A1 (de) * 2022-11-08 2024-05-08 Heidelberger Druckmaschinen Aktiengesellschaft Steuerung einer Auftragswalze einer Druckmaschine

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DE50004609D1 (de) 2004-01-15
US6460455B1 (en) 2002-10-08
EP1036658A3 (fr) 2001-03-21
EP1036658B1 (fr) 2003-12-03
ATE255499T1 (de) 2003-12-15
JP2000280441A (ja) 2000-10-10
DE19911568A1 (de) 2000-09-21
JP4652517B2 (ja) 2011-03-16

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