EP0956973A2 - Vollständig druckendes Gummituch - Google Patents
Vollständig druckendes Gummituch Download PDFInfo
- Publication number
- EP0956973A2 EP0956973A2 EP99107377A EP99107377A EP0956973A2 EP 0956973 A2 EP0956973 A2 EP 0956973A2 EP 99107377 A EP99107377 A EP 99107377A EP 99107377 A EP99107377 A EP 99107377A EP 0956973 A2 EP0956973 A2 EP 0956973A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- blanket
- plate cylinder
- roller
- cylinder
- printing
- 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
Links
- 238000007639 printing Methods 0.000 title claims description 81
- 239000000463 material Substances 0.000 claims abstract description 34
- 239000002344 surface layer Substances 0.000 claims abstract description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 17
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 17
- 239000010410 layer Substances 0.000 claims description 13
- 238000007645 offset printing Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- 229920001296 polysiloxane Polymers 0.000 claims description 9
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 229920002313 fluoropolymer Polymers 0.000 claims description 2
- 239000004811 fluoropolymer Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/44—Arrangements to accommodate interchangeable cylinders of different sizes to enable machine to print on areas of different sizes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
- B41N10/02—Blanket structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
- B41N2210/02—Top layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
- B41N2210/04—Intermediate layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
- B41N2210/06—Backcoats; Back layers; Bottom layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
- B41N2210/14—Location or type of the layers in multi-layer blankets or like coverings characterised by macromolecular organic compounds
Definitions
- the present invention relates to rotary printing presses, in particular to Rotary printing machines for printing with variable section length.
- Offset printing is usually done in a continuous process in which a web of material or a printing material passes through different processing stages one after the other until a finished printed product is available.
- the web is run by a Feed roller taken over and then runs through z.
- the printing unit of an offset printing machine comprises an inking unit with inking rollers which supply ink to the printing plate mounted on the plate cylinder.
- the printing plate carries the image to be printed.
- the ink is transferred from the printing plate to a blanket mounted on the blanket cylinder (the Printing plate-blanket transfer ").
- the blanket in turn transfers the color to the material web (the Blanket-to-web transfer ").
- the plate cylinder and the blanket cylinder have substantially parallel axes and are driven so that the surface speed of the printing plate matches the surface speed of the blanket as much as is necessary to achieve an acceptable transfer of ink from the blanket Ensure plate on the rubber blanket.
- the ratio of the plate cylinder diameter (i.e. the plate cylinder with the mounted plate) to the diameter of the rubber blanket is an integer and takes z.
- B the Value 1: 1.
- Other diameter ratios are also conceivable, for example with Printing plate cylinders with simple diameter, those with blanket cylinders working together, which are designed with double diameter.
- One reason that such a relationship between the diameter of the plate cylinder and the Diameter of the blanket cylinder is necessary is that the picture of the Pressure plate in the same place on the rubber blanket with each revolution of the cylinders must be transferred.
- Latent images on the rubber blanket are colored images that are due to the rubber blanket
- the blanket will have both the primary image (ie, the image created by the immediately preceding color transfer from the plate cylinder to the rubber blanket) and the latent image (ie, an image derived from an earlier color transfer from the Printing plate on the rubber blanket, in which the color was not completely transferred) transfers to the material web, which is also generally known as Doubling "is called.
- the primary image ie, the image created by the immediately preceding color transfer from the plate cylinder to the rubber blanket
- the latent image ie, an image derived from an earlier color transfer from the Printing plate on the rubber blanket, in which the color was not completely transferred
- variable section length printing e.g. H. the printing in which the Image length and thus the plate diameter changes from one print job to another, thereby complicated that the diameter of the blanket cylinder the diameter of the Plate cylinder must be adjusted so that a ratio of integers arises.
- the present Invention makes the adjustment of the diameter of the plate cylinder to the Diameter of the blanket cylinder on each other unnecessarily. This allows the diameter of the plate cylinder with respect to the diameter of the blanket cylinder.
- the aim of the present invention is to develop a printing press that has a interchangeable plate cylinder includes to print with different section lengths can, as well as an adjustable inking unit, which is adapted to plate cylinders with different Can adjust diameters, and a fully printing rubber blanket, d.
- a folder for variable section lengths can be used in conjunction with the present invention can be used to advantage to the printed signatures to cut.
- the present invention relates to a printing press comprising a blanket, the Surface in conjunction with the appropriate color, the color is essentially complete transfers from the rubber blanket to the web of material without color splitting.
- no latent image is left on the blanket, after the blanket has contacted the printing material or the material web.
- This Property is achieved in that the surface of the rubber blanket with a suitable material with low polar surface energy - d. H. less than 4 dynes / cm, whereby a total surface energy of less than 14 dynes / cm is reached - is coated or impregnated.
- a fluoropolymer especially that under the name Teflon® known polytetrafluoroethylene (PTFE), or silicone preferably can be used with a suitable water-based paint.
- a new colored picture can be taken from the plate transferred to the blanket in a completely different position without it passing through latent images for duplicating the printed image comes.
- An advantage of the present invention is that in printing machines with adjustable inking units and optimized, fully printing rubber blankets Printing plates for different section lengths (i.e. printing plates with different Diameter and thus different image lengths) can be used.
- the Ratio of the diameters of plate and blanket cylinders does not have to be an integer be.
- the diameter of the plate cylinder can e.g. B. any multiple, including a non-integer multiple, the diameter of the Blanket cylinder amount.
- a printing press can be designed so that the Dimensions of the blanket cylinder are optimized in terms of factors like that Blanket life, speed of rotation, cooling and internal components such as Axles and gears.
- Blanket life the Dimensions of the blanket cylinder are optimized in terms of factors like that Blanket life, speed of rotation, cooling and internal components such as Axles and gears.
- those for printing and Blanket cylinders used gearboxes and axles with a degree of flexibility that partly depends on the size of the cylinders. Therefore, in the present invention the size of these components can be optimized with regard to their flexibility or rigidity and is no longer required by the need for an appropriate relationship between the Cylinders affected.
- the diameter the blanket cylinder no longer z. B. by a tedious underlay of paper sheets appropriate thickness must be chosen carefully so that it together with the thickness of the Blanket forms the required relationship to the plate cylinder.
- the inking rollers can, for. B. be chosen so that the color transfer at certain operating speeds is optimal. You can also choose from geometric Considerations and requirements can be selected, e.g. B. how best can be fitted into the inking unit and how the inking unit overall is best in the printing unit can be fitted.
- the inking unit can be relative to the printing unit, e.g. B. be movable to the plate cylinder, so that a single adjustable inking unit Plate cylinders of different sizes can be adjusted.
- a printing press may include a non-directly driven plate cylinder, e.g. B. exclusively by frictional contact, for example with the driven ink rollers or the driven blanket cylinder is driven.
- the Printing machine comprise a directly driven plate cylinder which, for. B. means Frictional contact drives the blanket cylinder, the blanket also partially through frictional contact with a driven web of material that the rubber blanket contacted, driven.
- a combination of these types of drives can also be used in Face and back printing are applied, d. H. if both sides of one at the same time Material web can be printed.
- the upper plate cylinder are driven by a motor and via frictional contact drive the upper blanket cylinder while the lower plate cylinder over Frictional contact could be driven by the lower blanket cylinder.
- the Plate cylinder, the blanket cylinder and / or the material web driven directly and drive one or more of the other cylinders.
- FIG. 1a-1c show partially schematic side views of a section of a Printing unit 1, the lower blanket cylinder 10 and an upper Blanket cylinder 20 includes.
- the blanket cylinders 10, 20 are rotatable on one Frame or attached to several frames of the printing unit 1 and form one Pressure gap through which a material web 2 can move.
- An upper one Plate cylinder 30a, 30b or 30c to which a printing plate is attached is adjacent to the upper blanket cylinder 20 is rotatably arranged.
- the inking unit or the inking roller train 40 comprises z. B.
- Die Metering roller 42 is adjacent to and takes up ink from the ductor 41.
- sleeve-shaped rubber blankets 11, 21 are preferably attached to the upper or lower blanket cylinders 10, 20.
- a lower (not shown) plate cylinder and a lower (not shown) inking unit are assigned to the lower blanket cylinder 10.
- the lower cylinder 10 can also only be an impression cylinder if the second - ie lower - side of the material web 2 is not to be printed on (that is, if only face printing is used). Unless expressly stated otherwise, in the following a blanket cylinder always means a blanket cylinder with a blanket attached to it.
- Plate cylinder as a rule on a plate cylinder with a (flat or sleeve-shaped) printing plate attached to it or on a cylinder with another known image material attached to its outer surface, for example a layer or foil which can be directly imaged by means of laser beams.
- the printing unit 1 further includes z. B. four drive motors 5, 5a, 6, 7.
- the first motor 5th drives the duct 41.
- the second motor 5a drives the metering roller 42.
- the third Motor 6 drives the inking roller 40 via the primary roller 43.
- the fourth engine 7 drives the blanket cylinder 20.
- the fourth motor 7 can, as shown by the dashed line Lines in Fig. 1a-1c, 2-4 and 7 is indicated, alternatively also Drive plate cylinder 30, 30a, 30b, 30c.
- the speed of the metering roller 42 preferably coincides with the speed of the primary roller 43; being the second motor 5a can be omitted if discrepancies are neglected.
- the ductor 41 rotates at a lower speed so that a large amount of paint is applied its surface is distributed without the need for considerable force and without the paint splashing. Therefore, the metering roller 42 in order to the speed of the printing unit to rotate, regardless of the ductor 41 either can be driven by a motor 5a or by the driven primary roller 43.
- a Gear 200 may be provided on the primary roller 43 which is connected to the Gear 201, 201 'on the friction rollers 45, 45' cooperates to the To drive friction rollers 45, 45 'in this way.
- the inking rollers 44, 44 'and the Transfer rollers 46, 46 ' are preferably in frictional contact with the primary Roller 43 or the friction rollers 45, 45 'driven.
- the plate cylinders 30a, 30b or 30c can be frictionally contacted with the blanket cylinder 20 (if the Blanket cylinder 20 is driven by the motor 7) or with the Ink application rollers 44, 44 'are driven; or the blanket cylinder 20 can can be driven via frictional contact with the plate cylinder 30a, 30b or 30c (if the plate cylinder 30a, 30b or 30c is driven by the motor 7).
- Farther can between the plate cylinder 30a, 30b or 30c and the blanket cylinder 20th Not shown gear can be provided, via which the two cylinders are driven become.
- the lower half of the printing press (not shown here) can be used in the same way how the inking roller train 40 and the cylinder drive devices 5, 6, 7 be formed.
- the lower blanket cylinder 10 can be printed with one-sided printing an impression cylinder can be replaced.
- the ductor 41 rotates at a speed at which a constant color film over a narrow gap is transferred to the metering roller 42, as z. B. at the Heidelberg M-3000 TM web-fed rotary press and other web-fed offset presses State of the art is.
- the surface speed of the Metering roller 42 is z. B. via gear or a drive motor 5a, which is a known Speed feedback and position adjustment system includes, controlled so that they match the printing speed (i.e., the surface speed of the Plate cylinder).
- the print speed, i. H. said Surface speed is through the entire inking roller 40 by a maintain appropriate choice of gear ratios and roller diameters. A strong damping, the z. B.
- the inking roller 40 may be arranged to be around the primary roller 43 is pivotable, the z. B. is arranged after the metering roller 42.
- the ink roller 40 may comprise two parts, one to the right of the primary roller 43 consisting of the Rollers 44, 45 and 46, and one to the left of the primary roller 43 consisting of the Rollers 44 ', 45' and 46 '.
- the right and left parts can e.g. B.
- the primary Roller 43 can be pivoted by acting on arms 100 and 101 (which are shown schematically in FIGS. 1a-1c are shown) are mounted, which are pivotally mounted about the center C.
- Fig. 1a shows the position of the Arms 100, 101 when using the smallest plate cylinder 30a in which the Transfer rollers 46, 46 'almost touch and the inking rollers 44, 44' den Contact plate cylinder 30a at a 180 ° angle.
- Fig. 1b shows a medium-sized plate cylinder 30b
- Fig. 1c shows the position of the Arms 100, 101 when using the largest plate cylinder 30c in which the Friction rollers 45, 45 'almost touch the plate cylinder 30c.
- the inking roller train 40 connects the metering roller 42 to the plate cylinder 30a, 30b or 30c, within geometric constraints regardless of the size of the used plate cylinder 30a, 30b or 30c, and the inking roller 40 is with driven at a suitable speed in order to transfer sufficient color so that a Image that is to be transferred to the blanket cylinder 20 is colored.
- the rollers of the inking roller 40 need not be in line, i. H. You do not have to be arranged so that the axes of rotation of the rollers with each other by means of a straight line can be connected.
- 2 and 3 show embodiments in which the rollers of the ink roller 40 are not in a line. This will be possible if the arms 102, 103, 104 and 105 used are not straight. These arrangements can be advantageous because they can be adapted to larger pressure cylinders 30 than that Embodiments in Fig. 1a-1c.
- Figs. 2-4 show another arrangement in which the shape and the position of the arms 102, 103, or 104, 105 or 106, 107 are designed so that the Axis of the plate cylinder 30 by a distance O relative to the axis of the Blanket cylinder 20 can be moved.
- This arrangement can also be used for larger ones Plate cylinder 30 can be used. Since the geometrical arrangement of the rollers of the Ink roller 40 not to certain conditions such. B. linear connections or certain roller diameter is bound, any suitable arrangement can to get voted. The possibilities are not those shown in Figs. 1a-1c and 2-4 Orders limited.
- the arms 100, 101 or 102, 103 or 104, 105 or 106, 107 include any suitable number of rolls necessary to to ensure effective ink transfer to the plate cylinder 30.
- the gears 200, 201, 201 ' are not shown in FIGS. 2-4.
- each of the rollers 44, 44 ', 45, 45', 46, 46 ' can also be adjusted in this way be arranged so that optimal contact and pressure is created between the rollers to a to ensure optimal color transfer. This can be done through appropriate Pressure control devices 5.1, 5.1 ', 5.2, 5.2', 5.3, 5.3 '(see Fig.
- the axes of these rollers can be arranged so that they are relative to the arms 100, 101 or 102, 103 or 104, 105 or 106, 107 allow sideways movement, whereby Pressure control devices 5.1, 5.1 ', 5.2, 5.2', 5.3, 5.3 'control this movement and one Apply force to press the rollers against each other.
- the Pressure control devices 5.1, 5.1 ', 5.2, 5.2', 5.3, 5.3 'can, such as. B. shown in Fig. 5b is made of springs or any other known device for generating a resilient force, such as B. from an air cylinder.
- the inking unit is adjustable so that the Circumferential surfaces of the inking rollers 44, 44 ', the plate cylinder 30, the Friction rollers 45, 45 ', the transfer rollers 46, 46', and the primary roller 43 optimal work together.
- the inking rollers 44, 44 ' can also be close to Plate cylinder 30 may be arranged in such a way that it turns when the rollers rotate automatically apply to the plate cylinder 30 to transfer to this color.
- the plate cylinder 30 is preferably exchangeable on a frame 400 arranged using plate cylinders 30a, 30b, 30c, etc. of different sizes can be.
- the Frame 400 has a bearing for the axis of the plate cylinder 30, depending on the size of the plate cylinder 30 to the blanket cylinder 20 and moved away from it can.
- the blanket cylinder 20 can also be replaced in a frame 500 be arranged, whereby blanket cylinders 20 of different sizes are used can.
- a pressure control device 7.1 which is similar to the Pressure regulating devices 5.1, 5.1 ', 5.2, 5.2', 5.3, 5.3 ', 6.1 can be designed for this purpose the position of the axis of the blanket cylinder 20 relative to the web 2 to change to the use of blanket cylinders 20 different sizes enable, as well as a sufficient contact pressure between the To produce blanket cylinder 20 and the plate cylinder 30.
- the Frame 500 be designed so that this is a bearing for the axis of the Has blanket cylinder 20, which depending on the size of the blanket cylinder 20 the web 2 is movable towards and away from it.
- An endless, tubular rubber blanket is preferably used as the rubber blanket 21, which is designed in such a way that no non-printing areas arise.
- the sleeve-shaped rubber blanket can e.g. B. be produced by an endless Blanket or blanket on a sleeve made of plastic or metal is applied.
- the sleeve-shaped Blast air axially onto the base body of the blanket cylinder 20 upset. Due to the missing gap in sleeve-shaped rubber blankets, as z. B. with conventional, flat blankets, which around the blanket cylinder wrapped around and attached with their ends to the cylinder occurs at these sleeve-shaped rubber blankets a transfer of color over 360 ° cylindrical surface so that no non-printing areas arise.
- the size of the blanket cylinder 20 can be set and the surface speed (i.e. the surface speed of the on the Blanket cylinder 20 attached blanket 21) to the average
- the speed of the inking rollers 44, 44 'must be matched. So he can Diameter of the blanket cylinder 20 in relation to factors such as mounting, Speed of rotation, service life, heat transfer and cooling features, dynamic Stability, etc. can be optimized.
- the diameter of the blanket cylinder 20 does not have to be be an integral multiple of the diameter of the plate cylinder 30. Of the Blanket cylinder 20 also need not be replaced if plate cylinder 30 with different section lengths (i.e. with different diameters) into the Printing unit 1 can be installed.
- the surface speeds of the Plate cylinder 30 and the blanket cylinder 20 to be matched to one another To prevent smudging or image distortion in the circumferential direction if color is transferred from the plate cylinder 30 to the blanket cylinder 20. If the surface speeds are not coordinated, occurs in the range of Gap between the blanket cylinder 20 and the plate cylinder 30 slip, which leads to smearing of the transferred print image.
- Blanket 21 can be such. B. act a loose sleeve, the frictional contact is coupled to the plate cylinder 30.
- the blanket cylinder 20 z. B. be provided at the ends with a toothing with a similar toothing the outer surface of the plate cylinder 30 can cooperate, the The solution described does not behave in principle differently than a solution in which everyone driven pressure gaps there is no slip to web 2. Because of the negligible slip between the blanket 21 and the associated driven roller or the associated driven cylinder, it is also possible to use band-like rubber blankets. An embodiment with a band-like Blanket is shown in Fig. 7. Instead of one as shown in Figs.
- 1a-1c and 2-4 sleeve-shaped rubber blankets are the band-like rubber blankets 611, 621 Blanket cylinders 10 and 20 and guided over guide rollers 600 and 601.
- the band-like blankets 611, 621 move around the blanket cylinders 10, 20 and the guide rollers 600, 601 around and transfer in the same manner as that previously described blankets an image of the impression cylinder 30 on the web 2nd
- a printing unit 1 is for printing with various Section lengths designed so that only the plate cylinder 30 has to be replaced, to change the section length while the blanket cylinder 20 in the printing unit 1 can remain.
- the plate cylinder 30 - regardless of its size - is always like this positioned that its circumference is in rolling contact with the blanket cylinder 20.
- This z. B. achieved by means of a gap or a slot with a bearing housing which in Frame 400 is arranged and one depending on the size of the plate cylinder 30 Adjustment of the axis of the plate cylinder 30 relative to the blanket cylinder 20 enables.
- Another way to change the size of the plate cylinder 30 is in applying sleeves of different thicknesses to the plate cylinder 30.
- a Device and a method for adjusting the plate cylinder diameter in the previously described manner is e.g. B. described in US patent application 08 / 577,642.
- a printing press In the case of color printing, a printing press generally comprises several printing units, whereby each printing unit prints with a different color.
- To move from printing unit to printing unit one to achieve optimal register setting i.e., to ensure that the differently colored images from printing unit to printing unit printed exactly on top of each other ), the position and the rotational speed of the plate cylinder 30 in the different printing units are synchronized.
- the correct phase rotation of the Plate cylinder 30 can z. B. be maintained by the fact that the pressure of the The drive of the plate cylinder is changed by one or more of the Pressure regulators 5.3, 5.3 ', 6.1, 6.1' or 7.1 can be adjusted. So z. B.
- the speed of the Ink roller 40 is preferably kept constant, so that with each Rotation of the plate cylinder 30 transmit an essentially constant volume of color becomes.
- the ink roller 40 can be used to the plate cylinder 30 relative to Blanket cylinder 20 or to the material web 2 in the manner described above to change the register setting of the plate cylinder 30. Thereby the images on the material web can be held in register from printing unit to printing unit be aligned.
- Blanket cylinder 20 is accelerated relative to the plate cylinder 30, at each Rotation of the plate cylinder 30 an image printed on the web 2, which is slightly larger than the circumference of the plate cylinder 30.
- This image is distorted in the direction in which the material web 2 moves. This distortion can be compensated for by the Prepress an opposite distortion into the image on plate cylinder 30 is installed.
- the technique of introducing distortion into the plate cylinder 30 described above can be used as another method of printing with variable section lengths become and is suitable for. B. for minor changes in section length in Range up to 5%.
- the main method of printing with variable section lengths is, however, with the plate cylinder 30 against another plate cylinder 30 different diameters.
- Another aspect of the present invention relates to the removal of latent images on the blanket cylinder 20, known in offset printing as so-called Doubling "appear.
- the removal of latent images takes place in the manner according to the invention in that the Paint is peeled off or peeled off the blanket without causing back splitting the color is coming.
- This can e.g. B. can be achieved in that a suitable color Water base is used in combination with a rubber blanket, the Surface material has a very small polar surface energy, e.g. B. less than 4 dynes / cm has, so that there is a maximum total surface energy of less than 14 dynes / cm results.
- a suitable material can e.g. B. Teflon (PTFE) or silicone.
- Fig. 6 shows part of a sleeve-shaped rubber blanket 21, which on the Blanket cylinder 20 is arranged.
- the blanket 21 includes one Surface layer 22, which contains PTFE as a component.
- the surface layer 22 the rubber blanket 21 can, for. B. PTFE powder 23, the whole Basic structure 24, which is preferably made of rubber, is distributed.
- the PTFE powder 23 can alternatively be replaced by silicone powder.
- the PTFE or silicone powder 23 makes preferably more than 50% of the volume of the surface layer 22.
- the PTFE or Silicone powder particles are preferably between 0.1 ⁇ m and 1.0 ⁇ m in size.
- the Rubber blanket 21 can comprise further layers below the surface layer 22, e.g. B. a volume compressible layer 25, a lower rubber layer 26 and one Sleeve layer 27, the z.
- B. can be made of nickel or a plastic. This additional layers are known and z. In US 5,323,702 and US 5,304,267 described.
- the sleeve layer 27 can, for example, over the outer surface of the Slide blanket cylinder 20. Alternatively, PTFE tape on the surface of the Blanket 21 can be used.
- Plate cylinders 20 and blanket cylinders 30 are of different diameters Differences in rotational speed are permitted to such an extent as long as the Surface speeds are roughly matched and an acceptable one Print quality is achieved, however, the speed range compared to conventional printing presses is considerably larger, so that the invention Device in particular for the use of direct imaging methods for imaging the printing plate or the printing plate cylinder, e.g. B. by means of a laser, where a new print image by the direct imaging unit, preferably for each Rotation of the plate cylinder is generated again.
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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)
Abstract
Description
- Fig. 1a
- eine teilweise schematische Seitenansicht von einem beispielhaften Gummituchzylinder, Plattenzylinder und von Farbwalzen einer Offset-Druckmaschine gemäß einer ersten Ausführungsform der vorliegenden Erfindung;
- Fig. 1b
- die Ausführungsform von Fig. 1a mit einem größeren Plattenzylinder;
- Fig. 1c
- die Ausführungsform von Fig. 1a mit einem gegenüber Fig. 1b abermals vergrößerten Plattenzylinder;
- Fig. 2
- eine Seitenansicht von einem beispielhaften Gummituchzylinder, Plattenzylinder und von Farbwalzen einer Offset-Druckmaschine gemäß einer zweiten Ausführungsform der vorliegenden Erfindung;
- Fig. 3
- eine Seitenansicht von einem beispielhaften Gummituchzylinder, Plattenzylinder und von Farbwalzen einer Offset-Druckmaschine gemäß einer dritten Ausführungsform der vorliegenden Erfindung;
- Fig. 4
- eine Seitenansicht von einem beispielhaften Gummituchzylinder, Plattenzylinder und von Farbwalzen einer Offset-Druckmaschine gemäß einer vierten Ausführungsform der vorliegenden Erfindung;
- Fig. 5, 5a und 5b
- eine seitliche, eine vordere und eine rückwärtige Aufsicht der Ausführungsform von Fig. 1a - 1c.
- Fig. 6
- ein Gummituch gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung;
- Fig. 7
- eine Seitenansicht von einem beispielhaften Gummituchzylinder, Plattenzylinder und von Farbwalzen einer Offset-Druckmaschine gemäß einer fünften Ausführungsform der vorliegenden Erfindung.
- 1
- Druckwerk
- 2
- Materialbahn
- 5
- Motor
- 5a
- Motor
- 5.1
- Druckregelvorrichtung
- 5.1'
- Druckregelvorrichtung
- 5.2
- Druckregelvorrichtung
- 5.2'
- Druckregelvorrichtung
- 5.3
- Druckregelvorrichtung
- 5.3'
- Druckregelvorrichtung
- 6
- Motor
- 6.1
- Druckregelvorrichtung
- 7
- Motor
- 7.1
- Druckregelvorrichtung
- 10
- unterer Gummituchzylinder/Gegendruckzylinder
- 11
- Gummituch
- 20
- oberer Gummituchzylinder
- 21
- Gummituch
- 22
- Oberflächenschicht
- 23
- PTFE-/Silikon-Pulver
- 24
- Grundstruktur
- 25
- kompressible Schicht
- 26
- untere Gummischicht
- 27
- Hülsenschicht
- 30a
- Plattenzylinder
- 30b
- Plattenzylinder
- 30c
- Plattenzylinder
- 31
- Platte
- 40
- Farbwerk
- 41
- Duktor
- 42
- Dosierwalze
- 43
- primäre Walze
- 44
- Farbauftragswalze
- 44'
- Farbauftragswalze
- 45
- Reiberwalze
- 45'
- Reiberwalze
- 46
- Übertragswalze
- 46'
- Übertragswalze
- 100
- Arm
- 101
- Arm
- 102
- Arm
- 103
- Arm
- 104
- Arm
- 105
- Arm
- 106
- Arm
- 107
- Arm
- 200
- Getriebe
- 201
- Getriebe
- 201'
- Getriebe
- 400
- Rahmen
- 500
- Rahmen
- 600
- Leitwalze
- 601
- Leitwalze
- 611
- bandartiges Gummituch
- 621
- bandartiges Gummituch
- C
- Mittelpunkt der primären Walze
- O
- Abstand
Claims (18)
- Rollenrotations-Offsetdruckmaschine zum Drucken mit variabler Abschnittslänge, mit einem ein Gummituch (21) tragenden Gummituchzylinder (20), mit einem eine Druckplatte (31) tragenden Plattenzylinder (30, 30a, 30b, 30c); und mit einem Farbwerk (40), welches eine Farbauftragswalze (44, 44') umfaßt, die an verschiedenen Positionen an den Plattenzylinder (30, 30a, 30b, 30c) anstellbar ist,
dadurch gekennzeichnet,daß das Gummituch (21) eine Oberflächenschicht (22) aus einem Material mit geringer polarer Oberflächenenergie besitzt. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,daß die Oberflächenschicht (22) ein Fluorpolymer, insbesondere Polytetrafluoäthylen oder Silikon, enthält. - Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,daß die Oberflächenschicht (22) mindestens 50% Polytetrafluoräthylen-Pulver (23) in einer Grundstruktur (24) aus Gummi enthält. - Vorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,daß das Gummituch (21) eine endlose Druckoberfläche besitzt. - Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet,daß das Gummituch (21) ein hülsenförmiges Gummituch (21) ist. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,daß der Plattenzylinder (30, 30a, 30b, 30c ) gegen einen weiteren Plattenzylinder unterschiedlichen Durchmessers austauschbar im Rahmen (400, 500) der Druckmaschine gelagert ist, wobei die Position der Farbauftragswalzen (44, 44') in der Weise veränderbar ist, daß sich diese in Rollkontakt mit dem weiteren Plattenzylinder (30, 30a, 30b, 30c) befinden. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,daß das Farbwerk (40) ferner eine drehbar gelagerte primäre Walze (43) umfaßt unddaß der Plattenzylinder (30, 30a, 30b, 30c) in der Weise verfahrbar ist, daß der Abstand zwischen dem Drehzentrum (C) der primären Walze (43) und dem Drehzentrum des Plattenzylinders (30, 30a, 30b, 30c) veränderbar ist. - Vorrichtung nach Anspruch 7,
dadurch gekennzeichnet,daß das Farbwerk (40) weiterhin eine an die primäre Walze (43) anstellbare Übertragswalze (46, 46') sowie eine an die Übertragswalze (46, 46') anstellbare Reiberwalze (45, 45') und eine an die Reiberwalze (45, 45') anstellbare Farbauftragswalze (44, 44') umfaßt. - Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet,daß die Übertragswalze (46, 46') und/oder die Reiberwalze (45, 45') und/oder die Farbauftragswalze (44, 44') an einem Arm (100-107) angeordnet sind. - Vorrichtung nach Anspruch 9,
dadurch gekennzeichnet,daß der Arm (100-107) um die primäre Walze (43) in der Weise schwenkbar angeordnet ist, daß die Position der Farbauftragswalze (44, 44') relativ zum Plattenzylinder (30, 30a, 30b, 30c) veränderbar ist. - Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet,daß die Pulverpartikel eine Größe im Bereich zwischen 0,1 µm und 1,0 µm aufweisen. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,daß die vom Farbwerk (40) auf den Plattenzylinder (30, 30a, 30b, 30c) übertragene Farbe eine Farbe auf Wasserbasis umfaßt. - Gummituch für eine Rollenrotations-Offsetdruckmaschine,
gekennzeichnet durcheine zylindrische, hülsenförmige erste Schicht (27), eine kompressible Zwischenschicht (25) und eine auf der kompressiblen Zwischenschicht (25) angeordnete Oberflächenschicht (22) aus einem Material mit einer geringen polaren Oberflächenenergie. - Gummituch nach Anspruch 13,
dadurch gekennzeichnet,daß die polare Oberflächenenergie weniger als 14x10-3 N/m beträgt. - Gummituch nach Anspruch 13 oder 14,
dadurch gekennzeichnet,daß die Oberflächenschicht (22) Polytetrafluoräthylen oder Silikon enthält. - Gummituch nach einem der Ansprüche 13 bis 15,
dadurch gekennzeichnet,daß die Oberflächenschicht (22) eine Grundstruktur (24) aus Gummi mit darin eingebrachtem Polytetrafluoräthylen-Pulver (23) umfaßt. - Gummituch nach Anspruch 16,
dadurch gekennzeichnet,daß der Anteil an Polytetrafluoäthylen-Pulver (23) mindestens 50% beträgt. - Gummituch nach Anspruch 17,
dadurch gekennzeichnet,daß die Partikel des Polytetrafluoräthylen-Pulvers (23) eine Größe zwischen 0,1µm und 1,0µm aufweisen.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/080,073 US6041706A (en) | 1998-05-15 | 1998-05-15 | Complete release blanket |
| US80073 | 1998-05-15 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0956973A2 true EP0956973A2 (de) | 1999-11-17 |
| EP0956973A3 EP0956973A3 (de) | 2000-02-23 |
| EP0956973B1 EP0956973B1 (de) | 2003-07-30 |
Family
ID=22155093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99107377A Expired - Lifetime EP0956973B1 (de) | 1998-05-15 | 1999-04-22 | Vollständig druckendes Gummituch |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6041706A (de) |
| EP (1) | EP0956973B1 (de) |
| JP (1) | JPH11342583A (de) |
| DE (1) | DE59906409D1 (de) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10256173A1 (de) * | 2002-09-06 | 2004-03-18 | Koenig & Bauer Ag | Farbwerke von Rotationsdruckmaschinen |
| WO2005108262A1 (de) * | 2004-01-31 | 2005-11-17 | Koenig & Bauer Aktiengesellschaft | Druckmaschine mit zumindest einer druckeinheit zum bedrucken einer bedruckstoffbahn im offsetdruck mit variabler abschnittslänge und einem falzapparat |
| DE102006030057A1 (de) * | 2006-05-23 | 2007-11-29 | Koenig & Bauer Aktiengesellschaft | Farbwerk einer Rotationsdruckmaschine |
| EP1932667A1 (de) * | 2006-12-15 | 2008-06-18 | Müller Martini Holding AG | Druckwerk für eine formatvariable Rollendruckmaschine |
| DE102010001594A1 (de) * | 2010-02-04 | 2011-08-04 | KOENIG & BAUER Aktiengesellschaft, 97080 | Farbwerke und Druckeinheit einer Druckmaschine |
| US8006617B2 (en) | 2006-05-23 | 2011-08-30 | Koenig & Bauer Aktiengesellschaft | Assemblies in a printing couple of a rotary printing press |
| DE102015121398A1 (de) * | 2015-12-09 | 2017-06-14 | Manroland Web Systems Gmbh | Formatvariable Rollendruckmaschine |
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|---|---|---|---|---|
| US6435093B1 (en) * | 1998-09-21 | 2002-08-20 | Canon Kabushiki Kaisha | Printing apparatus for detecting and controlling an amount of ink solvent impregnated into a blanket |
| DE19943027C5 (de) * | 1998-10-28 | 2016-11-17 | Heidelberger Druckmaschinen Ag | Positioniervorrichtung in einer Druckmaschine |
| US6895861B2 (en) * | 2003-07-11 | 2005-05-24 | James F. Price | Keyless inking systems and methods using subtractive and clean-up rollers |
| US6672211B2 (en) * | 1999-03-03 | 2004-01-06 | James F. Price | Inking systems for printing presses |
| US6543350B2 (en) * | 2000-05-19 | 2003-04-08 | Intelligent Sensing, Inc. | Measurement system to monitor printing contact pressure |
| DE10063171A1 (de) * | 2000-12-18 | 2002-06-20 | Heidelberger Druckmasch Ag | Zylindermantelprofil |
| US7216585B2 (en) * | 2001-01-24 | 2007-05-15 | Goss International Americas, Inc. | Shaftless motor drive for a printing press with an anilox inker |
| EP1442878A1 (de) * | 2003-02-03 | 2004-08-04 | Kba-Giori S.A. | Antrieb des Einfärbwerkes in einer Tiefdruckmaschine |
| US20070079714A1 (en) * | 2005-10-10 | 2007-04-12 | Atwater Richard G | Upgrade kit for offset printers |
| KR101291878B1 (ko) * | 2007-02-06 | 2013-07-31 | 엘지디스플레이 주식회사 | 롤러 장치, 인쇄 방법 및 이를 이용한 액정표시장치의 제조방법 |
| EP2146850B1 (de) * | 2007-05-01 | 2012-07-11 | Goss International Americas, Inc. | Presse zum drucken von verschiedenen bandlängen und entsprechendes verfahren |
| DE102007034835A1 (de) * | 2007-07-26 | 2009-01-29 | Robert Bosch Gmbh | Verfahren zum Betreiben einer wellenlosen Druckmaschine und wellenlose Druckmaschine |
| FR2930767B1 (fr) * | 2008-04-30 | 2011-05-13 | Goss Int Montataire Sa | Cylindre de transport d'une feuille, dispositif de transport presse d'impression et utilisation correspondants |
| US8544385B2 (en) * | 2008-05-15 | 2013-10-01 | Goss International Americas, Inc. | Printing press with different fixed cutoffs and method |
| DE102009018476B4 (de) * | 2008-05-15 | 2024-11-07 | Heidelberger Druckmaschinen Intellectual Property Ag & Co. Kg | Verfahren zum phasenrichtigen Einkuppeln unterschiedlich touriger Zylinder |
| US9358773B2 (en) * | 2012-08-23 | 2016-06-07 | Goss International Americas, Inc. | Adjustable form roll apparatus |
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| IT1238678B (it) * | 1990-01-26 | 1993-09-01 | Reeves Spa | Tessuto per rivestimento di cilindri di un impianto di stampa, avente bassa affinita' per l'inchiostro |
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| US5186103A (en) * | 1992-06-12 | 1993-02-16 | Man Roland Druckmaschinen Ag | Printing machine system, especially for printing on a web of heavy or thick stock material, with interchangeable printing cylinders |
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-
1998
- 1998-05-15 US US09/080,073 patent/US6041706A/en not_active Expired - Lifetime
-
1999
- 1999-04-22 EP EP99107377A patent/EP0956973B1/de not_active Expired - Lifetime
- 1999-04-22 DE DE59906409T patent/DE59906409D1/de not_active Expired - Lifetime
- 1999-05-12 JP JP11131690A patent/JPH11342583A/ja active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10256173A1 (de) * | 2002-09-06 | 2004-03-18 | Koenig & Bauer Ag | Farbwerke von Rotationsdruckmaschinen |
| WO2005108262A1 (de) * | 2004-01-31 | 2005-11-17 | Koenig & Bauer Aktiengesellschaft | Druckmaschine mit zumindest einer druckeinheit zum bedrucken einer bedruckstoffbahn im offsetdruck mit variabler abschnittslänge und einem falzapparat |
| DE102006030057A1 (de) * | 2006-05-23 | 2007-11-29 | Koenig & Bauer Aktiengesellschaft | Farbwerk einer Rotationsdruckmaschine |
| DE102006030057B4 (de) * | 2006-05-23 | 2009-12-24 | Koenig & Bauer Aktiengesellschaft | Farbwerk einer Rotationsdruckmaschine |
| US8006617B2 (en) | 2006-05-23 | 2011-08-30 | Koenig & Bauer Aktiengesellschaft | Assemblies in a printing couple of a rotary printing press |
| EP1932667A1 (de) * | 2006-12-15 | 2008-06-18 | Müller Martini Holding AG | Druckwerk für eine formatvariable Rollendruckmaschine |
| DE102010001594A1 (de) * | 2010-02-04 | 2011-08-04 | KOENIG & BAUER Aktiengesellschaft, 97080 | Farbwerke und Druckeinheit einer Druckmaschine |
| EP2353864A1 (de) | 2010-02-04 | 2011-08-10 | Koenig & Bauer Aktiengesellschaft | Farbwerke und Druckeineit einer Druckmaschine |
| DE102015121398A1 (de) * | 2015-12-09 | 2017-06-14 | Manroland Web Systems Gmbh | Formatvariable Rollendruckmaschine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0956973A3 (de) | 2000-02-23 |
| US6041706A (en) | 2000-03-28 |
| JPH11342583A (ja) | 1999-12-14 |
| DE59906409D1 (de) | 2003-09-04 |
| EP0956973B1 (de) | 2003-07-30 |
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