EP1525997B1 - Habillage placé sur un cylindre et groupes d'impression d'une machine à imprimer comportant ledit cylindre - Google Patents

Habillage placé sur un cylindre et groupes d'impression d'une machine à imprimer comportant ledit cylindre Download PDF

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Publication number
EP1525997B1
EP1525997B1 EP04105168A EP04105168A EP1525997B1 EP 1525997 B1 EP1525997 B1 EP 1525997B1 EP 04105168 A EP04105168 A EP 04105168A EP 04105168 A EP04105168 A EP 04105168A EP 1525997 B1 EP1525997 B1 EP 1525997B1
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EP
European Patent Office
Prior art keywords
packing
layer
printing couple
less
roller
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EP04105168A
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German (de)
English (en)
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EP1525997A1 (fr
Inventor
Ralf Christel
Oliver Hahn
Karl Schaschek
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Koenig and Bauer AG
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Koenig and Bauer AG
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    • 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

Definitions

  • the invention relates to elevators on a roller and printing units of a printing press with the roller according to the preamble of claim 1, 2 or 3 or 21, 23 or 46.
  • a printing blanket which consists of several layers and in extreme cases has a total thickness of 0.55 to 3.65 mm.
  • the modulus of elasticity of cellular rubber sheets is between 0.2 and 50 MPa and between 0.1 and 25 MPa.
  • the special structure of the blanket and the properties of the layers a blanket is achieved, which, when pressed together, does not tend to lateral displacement or protuberance.
  • DE 19 40 852 A1 discloses a printing blanket for offset printing, which has a total thickness of approximately 1.9 mm.
  • a shear modulus as stress at 0.25 mm deformation is given at approximately 4.6, 1.9 and 8.23 kg / cm 2 in the case of a thickness of the printing blanket.
  • the goal here is to achieve a rapid recovery after a depression and a narrow thickness tolerance.
  • CH 426 903 A discloses an offset printing blanket, wherein usual indentation depths of 0 to 0.1 mm are present.
  • An increase in the indentation from 0.05 to 0.1 mm requires or has a consequence in the surface pressure of about 20.6 N / cm 2 . That is, in this range for the indentation depth and surface pressures of up to about 40 N / cm 2 there would be a linearized "spring characteristic" with a slope of about 412 N / cm 2 / mm.
  • EP 1 208 997 A1 discloses a blanket for offset applications, preferably for printing surface-structured substrates such as corrugated board. With a total thickness of 2.0 mm, in particular between 2.5 and 3 mm, and a compressible intermediate layer with a thickness of 1 to 2 mm, it is possible to adapt the outer layer to the surface profile of the printing substrate (eg corrugated cardboard).
  • EP 1 078 777 A2 discloses a rubber blanket sleeve with a compressible elastomer layer whose compression is in the range between 7% and 15% at 100 N / m 2 load.
  • z. B. in the inking and / or dampening unit, and in particular in the offset process between printing cylinders, resorted to hard-soft regularly on the combination of materials.
  • the required for the color transfer surface pressure is achieved by pressing a resilient, z, B. elastomeric layer (soft elastomeric cover / elevator, blanket, metal blanket, sleeve) on a cooperating roller with largely incompressible and non-elastic surface.
  • the contact force has become permanent due to external conditions changed (long-wave interference), so there is a risk of too pale or too intense color printed product until the time of a correction (waste). If the contact force changes dynamically due to oscillations (short-wave interference), this manifests itself in the formation of visible stripes in the printed product.
  • the invention has for its object to provide elevators for or on a roller, as well as printing units of a printing press, in particular paper-printing press.
  • a printing press in particular paper-printing press.
  • u.a. a sensitivity to cylinder vibration and / or channel shocks caused disturbances in the contact pressure, and thus the disadvantages resulting from the printing system color transfer are minimized.
  • the achievable with the present invention consist in particular that a lower sensitivity to changes or fluctuations in the contact force (surface pressure) is achieved, and thus a high quality of the printed product is easier to achieve and can be maintained.
  • Special elevators, an optimized design of the cylinders and their arrangement can reduce the influence of the cylinder movements on the ink transfer. In a particularly favorable embodiment with narrow points interrupted or reduced contact the vibration excitation itself is also reduced.
  • the transfer of the fluid is influenced considerably less by vibrations due to the design of the elevator and / or the arrangement of the rollers relative to one another.
  • a spring characteristic, ie a slope in the dependence of the surface pressure of the indentation is at least in an advantageous range for the indentation in pressure-on position highest 700 (N / cm 2 ) / mm.
  • Favorable are less than 400 (N / cm 2 ) / mm.
  • An advantageous range of relative indentation of the elevator in the operating state is z. B. between 10% and 25% between forming and transfer cylinders and 25% to 35% between transfer cylinder and paper.
  • z. B between 10% and 25% between forming and transfer cylinders and 25% to 35% between transfer cylinder and paper.
  • different areas for relative indentation may be preferred in order to achieve optimum results in terms of the required transition of the fluid with the smallest possible influence of fluctuations.
  • the surface pressure varies in pressure-on position in an advantageous embodiment highest in a range between 60 and 220 N / cm 2 , or different sub-ranges for fluids, eg. As printing inks, with greatly different rheological properties and / or different printing processes.
  • the surface pressure varies in even lower work areas (eg 40 to 60 or 80 N / cm 2 , or even 25 to 40 N / cm 2 , in each case in conjunction with the stated slope).
  • the curve should meet the condition of the said slope.
  • the width of the contact zone formed by the pressing of the rollers in the Nipp has hitherto i. d. R. kept as small as possible.
  • a widened nip point brings a higher line force and thus a greater static deflection with it.
  • this disadvantage is overcompensated by the elevator according to the invention or the arrangement.
  • the insertion of the elevator is e.g. at least 0.18 mm, in an advantageous version at least 0.25 mm.
  • the resulting width of the nip is z. B. in an advantageous embodiment at least 10 mm, in particular greater than or equal to 12 mm. This can be achieved a favorable surface pressure.
  • a vibration caused by a disturbance for. B. an interruption
  • the excitation of this vibration or its amplitude can be reduced.
  • a width of the interruption in the circumferential direction is at most in the ratio 1: 3 to the width of the nip (impression strip) resulting from the pressing.
  • the elevator or the layer allows the use of slimmer or even longer impression cylinders, d. H. a relation to the diameter large length of the cylinder.
  • the substrate is - in contrast to textile or inferior packaging printing - preferably paper with low strength, eg. B. at most 0.2 mm, which has a macroscopically substantially unstructured, flat surface.
  • These are, for example, papers with a basis weight of 8 to 150 g / m 2 , in particular 30 to 80 g / m 2 .
  • the surface can be uncoated (natural papers) or with small coating weights of up to 25 g / m 2 , in particular as for mass applications in web offset from 5 to 20 g / m 2 coating weight.
  • a printing machine, z. B. for newspaper or commercial printing, in particular a web-fed rotary printing press has rollers 01 rolling against each other; 02, which in the region of their touch a nip 03, z. B. a nip 03, form.
  • rolls 01; 02 an inking unit, a coating unit, or cylinder 01; 02 be a printing unit.
  • the cylinder 01; 02 is a forme cylinder 01 with an effective diameter D wPZ and a transfer cylinder 02 of an offset printing unit which interacts with a printing material, in particular paper ( see above ), printing ink on the printing material.
  • One of the cylinders 01; 02, z. B. the transfer cylinder 02 has on the lateral surface of a substantially incompressible, non-elastic core 04 with a diameter D GZK an elevator 05 or coating 05 with a soft, elastomeric layer 06 of a thickness t (or sum corresponding to effective layers) on.
  • a total thickness T of the elevator 05 is z. B. from the thickness t of the layer 06 and a thickness of an optionally associated with the layer 06 is substantially incompressible, inelastic support layer 10, for example, a metal plate (shown by way of example in Fig. 8) together. If the elevator 05 has no additional carrier layer 10, then the thickness t corresponds to the total thickness T.
  • the layer 06 can be constructed as an inhomogeneous layer 06 of multiple layers, which in total have the required property for the layer 06.
  • Core 04 and elevator 05 or coating 05 together form an effective diameter D wGZ of the transfer cylinder 02.
  • the effective diameter D wPZ is determined by the lateral surface of the forme cylinder 01 which is effective for unrolling and possibly includes a coating applied to the lateral surface of a main body 07 Elevator 08, z. B. a printing plate 08.
  • the cylinder 01 hard surface can also be designed as acting together with the transfer cylinder 02 impression cylinder 01.
  • the embodiment of the layer 06 set forth below is not dependent on the design of the rollers 01; 02 as a transfer and forme cylinder 01; 02 or bound to the execution with a printing plate 08.
  • a profile for a surface pressure P in the nip of the two rollers 01 and 02 is shown schematically.
  • the surface pressure P extends over the entire area of the contact zone, wherein it reaches a maximum surface pressure P max at standstill at the level of a connecting plane V of the axes of rotation. This shifts in production to the incoming gap side due to the viscous force component.
  • the contact zone and thus the profile has a width B.
  • the maximum surface pressure P max is ultimately responsible for the color transfer and adjust accordingly.
  • Fig. 2 shows schematically the profile of the surface pressure P in the case of a larger indentation S, which simultaneously causes a broadening of the width B. If, nevertheless, the maximum surface pressure Pmax be achieved, the integration of the surface pressure P over the entire width B leads to an increase in a force between the two rollers 01; 02.
  • the absolute height of the surface pressure P in the nip 03 and their variation in the variation of the indentation S is largely determined by a spring characteristic of the layer 06 or the elevator 05 used with the layer 06.
  • the spring characteristic represents the surface pressure P as a function of the indentation S.
  • FIG. 3 shows by way of example some spring characteristics of conventional elevators 05, in particular blankets 05 with a corresponding layer 06.
  • the curves of FIG. 3 are determined by way of example on a quasi-static stamp test bench in the laboratory with the following results:
  • the Ambos is immobile and stiff (compared to the sample considered).
  • the sample, here the elevator 05 or the layer 06 is arranged between the stamp surface and the anvil surface.
  • the values determined in this way are subject to greater or lesser variations than the true material constant (without edge effects), depending on the measuring arrangement and measuring method. Due to edge effects, the measured values are usually slightly higher than the actual material constants (borderline case of infinitely large sample, stamp and anvil surface). These deviations are for example in the range of a few% (eg ⁇ 10%, in particular ⁇ 5% for the above-mentioned and customary arrangements) and can generally be estimated in their size. Due to this fact (small and possibly estimable errors), the values listed below should be considered as absolute errors for the material constant "surface pressure".
  • the surface pressures specified below as the intrinsic size, ie as the material constant absolute (or also as erroneous measured value) preferably apply to printing conditions of 20 ° to 35 ° C., for example, in particular at a test temperature of 25 ° C., and normal ambient pressure (eg 1013 mbar).
  • a slope .DELTA.P / .DELTA.S of the spring characteristic determines the fluctuation in the surface pressure P when the depression S (for example, when oscillating) changes.
  • ⁇ S of the indentation by a mean indentation value S is the magnitude of a fluctuation ⁇ P of the required maximum surface pressure P max in the nip 03 about the average surface pressure P approximately proportional to the slope ⁇ P / ⁇ S of the spring characteristics at the point S.
  • Lifts 05 which as a whole or whose layer 06 as such has a large pitch ⁇ P / ⁇ S, in particular in the range of the required maximum surface pressure P max in the pressure-relevant area, are referred to below as “hard”, those with a small pitch ⁇ P / ⁇ S referred to as “soft”.
  • the elevator 05 or the layer 06 is now executed as a "soft" elevator 05 or "soft” layer 06.
  • a "hard” elevator 05 or a hard layer 06 performs a same relative movement of the rollers 01; 02 (or change in the distance A) thus in a soft elevator 05 to a smaller change in the surface pressure P and thus to a reduction in the fluctuations in the color transfer.
  • the soft elevator 05 thus causes a lower sensitivity of the printing process to vibrations and / or deviations at intervals from a desired value. Due to smaller changes in the surface pressure P due to relative movements of the rollers 01; 02 are z. B. vibration strip in the printed product in soft elevators 05 or 05 with elevators with soft layer 06 visible only at higher vibration amplitudes.
  • the surface pressure varies in pressure-on position in an advantageous embodiment highest in a range between 60 and 220 N / cm 2 .
  • fluids e.g. As printing inks, with very different rheological properties, different areas within the above-mentioned area for the surface pressure may be preferred.
  • So varies the Range for wet offset (ink and fountain solution) z. B. between 60 and 120 N / cm 2 , in particular from 80 to 100 N / cm 2 , while in the case of dry offset (no dampening solution, only paint on form cylinder) z.
  • B. between 100 and 220 N / cm 2 , in particular 120 to 180 N / cm 2 .
  • the slope should meet the condition on the slope.
  • the pressure-relevant area for the surface pressure P max is in a first advantageous embodiment between 60 to 220 N / cm 2 .
  • different areas within the above-mentioned area for the surface pressure may be preferred.
  • the range for the wet offset z. B. between 60 and 120 N / cm 2 , in particular from 80 to 100 N / cm 2 (shaded in Fig. 3 and marked with area I), while in the case of dry offset z. B. between 100 and 220 N / cm 2 , in particular from 120 to 180 N / cm 2 varies.
  • a soft elevator 05 (or its layer 06) at least in the range of 80 to 100 N / cm 2, a slope .DELTA.P / .DELTA.S of z. B. ⁇ P / ⁇ S ⁇ 700 (N / cm 2 ) / mm, especially ⁇ P / ⁇ S ⁇ 500 (N / cm 2 ) / mm, in particular less than 400 (N / cm 2 ) / mm.
  • the slope .DELTA.P / .DELTA.S should be smaller in the area concerned for the surface pressure P by at least a factor of two than is currently the case for elevators 05 in offset printing.
  • a pressure-relevant area for example, between 40 - 60 N / cm 2 (in Fig. 3 marked with area II) is selected.
  • the blanket 05 or the layer (s) 06 is in this case designed such that at least in a (test or working) region of the surface pressure P of 40-60 N / cm 2, a pitch of less than 350 (N / cm 2 ) / mm, in particular at most 300 (N / cm 2 ) / mm, in a special embodiment even highest 200 (N / cm 2 ) / mm or in the entire larger range of 40 - 80 N / cm 2 at least less than 400 (N / cm 2 ) / mm).
  • the characterization of the blanket 05 in this work area can be alone or in addition to the above characterization be consulted in the above areas, so that the blanket is characterized by several support points.
  • the transfer cylinder 02 is equipped with such an elevator and with a pressure for a resulting surface pressure P of 40-60 N / cm 2 with the cooperating cylinder, ie with the forme cylinder 01 or the pressure point with forming impression cylinder to each other hired.
  • the work area is even selected with only a surface pressure P of 25 -40 N / cm 2 (marked with area III in FIG. 3), the layer 06 or the soft elevator then being placed in a (test or Working area) of the surface pressure P of 25-40 N / cm 2 should only have a slope of only at most 200 (N / cm 2 ) / mm, in particular at most 150 (N / cm 2 ) / mm.
  • the areas mentioned for the surface pressure I; II; III can represent both preferred working areas with respect to employment but also test areas for the layer 06 or the blanket 05. It is advantageous if, for a specific work area intended for employment, the test area used for the characterization corresponds to the work area.
  • the layer 06 has a greater thickness t or the elevator 05 has a greater overall thickness T than hitherto customary.
  • the thickness t of the functional layer 06 which is functional in terms of elasticity or compressibility amounts, for example, to 1.3 to 6.3 mm, especially 1.7 to 5.0 mm, in particular more than 1.9 mm.
  • support layers eg, woven fabrics
  • inelastic can come about in the area of the surface of the elevator 05, for example.
  • the specified thickness t of the layer 06 in the case of several layers of layers 06 refers to the sum of the "partial layers” functionally responsible for the above-described characteristic (dependence on surface pressure / indentation) and the elasticity or compressibility.
  • An elevator 05 then has, for example together with carrier layer (s) 10, the total thickness T of 2.0 to 6.5 mm, in particular 2.3 to 5.9 mm.
  • the elastic layer 06 or its thickness t is understood as meaning the layer 06 or the sum of the layers 06 whose material has a modulus of elasticity in the radial direction of less than 50 N / mm 2 .
  • the layers possibly provided for support (fabric) or dimensional stability (support) have significantly greater modulus of elasticity, e.g. B. greater than 70, in particular greater than 100 N / mm 2 or even greater 300 N / mm 2 .
  • At least one partial layer of the layer 06, referred to here as an elastic layer, is made of porous material in an advantageous embodiment.
  • the elastic layer 06 may also include a cover layer 15 indicated by dashed lines in FIG. 8, the modulus of elasticity of which in the radial direction is less than 50 N / mm 2 .
  • a cover layer serves to form a closed surface and in this case contributes to the formation of "softness".
  • cover layers larger elastic modulus, z. B. greater than 70 N / mm 2 , in particular greater than 100 N / mm 2 or even greater than 300 N / mm 2 used, and then for this reason are not attributed to the elastic and / or compressible layer 06 here.
  • the "soft" elevator 05 (or layer 06) is preferably operated with a higher indentation S in comparison to conventional indentations S (shown schematically in FIG Fig. 2 in comparison to Figure 1 shown), ie, the two rollers 01; 02 are related to their respective effective but undisturbed diameter D wGZ , D wPZ further hired.
  • an optimal maximum surface pressure P max is achieved despite a smaller pitch .DELTA.P / .DELTA.S.
  • the employment of the rollers 01; 02 together takes place in an advantageous embodiment such that the indentation S to at least 0.18 mm, z. B. to 0.18 to 0.60 or even to 0.80 mm, in particular 0.25 to 0.50 or even to 70 mm, amounts.
  • the slope .DELTA.P / .DELTA.S of the spring characteristic is in an advantageous embodiment, at least in an area for the indentation of 0.22 to 0.38 mm less than 500 (N / cm 2 ) / mm, in particular even less than 250 (N / cm 2 ) / mm.
  • the slope or the differential quotient ⁇ P / ⁇ S is less than 125 (N / cm) at least in an indentation range of 0.30 to 0.50 mm 2 ) / mm.
  • a resulting by indentation S of the layer 06 width B of the contact zone in a projection perpendicular to a connecting plane V of their axes of rotation is in an advantageous embodiment, for. B. at least 5%, in particular at least 7% of the undisturbed effective diameter D wGZ of the roller 02 with layer 06 in Nipp with the forme cylinder 01, and at least 7%, in particular at least 9% of the undisturbed effective diameter D wGZ of the roller 02 with layer 06 in the knick of the web 13 traversed Nipp with a pressure point forming impression cylinder (eg., A second transfer cylinder 14).
  • a pressure point forming impression cylinder eg., A second transfer cylinder 14
  • the design and / or arrangement of the "soft" elevator 05 is particularly advantageous when one of the two co-operating rollers 01; 02 (or both) at least one interference affecting the unwinding 09; 11 has on its effective lateral surface.
  • This disorder 09; 11 can as a break 09; 11 an axially extending shock 09; 11 two ends of one or more elevators 05; 08 be.
  • This channel 09; 11 has an opening towards the lateral surface, through which the ends are guided.
  • the channel 09; 11 a device for clamping and / or tensioning the elevator 05; 08 or the elevators 05; 08 have.
  • width B09; B11 of the channel 09; 11 smaller than the width B of the contact zone.
  • at least always based areas of co-operating lateral surfaces in the contact zone from each other it also results in a reduction in the height and a flatter course (broadening of the pulse) for the force of the impact excitation.
  • Softer lifts 05 or softer layers 06 thus lead to narrow channels 09,11 to a weakening and a temporal extension of the channel impact.
  • ends of a metal blanket may be arranged in the channel 11.
  • the layer 06 is in this case on a dimensionally stable support, for. B. a thin metal plate (a plate), applied, the folded ends are arranged in the channel 11.
  • the channel 11 can then extremely narrow in the circumferential direction, z. B. less than or equal to 5 mm, in particular less than or equal to 3 mm.
  • the channel 09 in an advantageous embodiment with a width in the circumferential direction is less than or equal to 5 mm, in particular less than or equal to 3 mm.
  • the permissible ratio B09: B or B11: B is an embodiment, wherein the width B09; B11 of the channel 09; 11 in the region of its opening or mouth to the lateral surface of the core 04 or main body 07 in the circumferential direction at most in the ratio 1: 3 to the resultant by the pressing width B of the contact zone (impression strip).
  • the soft layer 06 preferably has a reduced damping constant compared to commonly used materials, so that despite the higher loading and unloading speeds occurring due to the higher indentation S during unrolling, no higher flexing heat is generated.
  • the layer 06 must be designed such that a sufficiently fast recovery or springing takes place after passing through the nip 03 or the Nipps with the forme cylinder 01 in the starting position, so for example, the next contact with a roller or or cylinder again the initial strength is present.
  • FIGS. 4 and 5 show a printing unit 12 configured in an advantageous manner with the layer 06 and designed as a so-called double printing unit 12.
  • the forme cylinder 01 associated transfer cylinder 02 of a first cylinder pair 01; 02 acts on a substrate 13, z. B. a web 13 with a likewise designed as a transfer cylinder 14 impression cylinder 14 together, which is also associated with a forme cylinder 16.
  • All four cylinders 01; 02; 14; 16 are mechanically driven independently of one another by means of various drive motors 17 (FIG. 4).
  • forming and transfer cylinders 01; 02; 14; 16 coupled in pairs by a paired drive motor 17 (on the forme cylinder 01, 16, on the transfer cylinder 02, 14 or parallel) driven (Fig. 5).
  • the form cylinder 01; 16 and the transfer cylinder 02; 14 are in a first embodiment (Example 1) as a cylinder 01; 02; 14; 16 double circumference, ie with a circumference of substantially two stationary printed pages, in particular of two newspaper pages executed. They are with effective diameters D wGZ ; D wPZ made between 260 to 400 mm, in particular 280 to 350 mm.
  • the transfer cylinder 02; 14 On the lateral surface of the core 04, the transfer cylinder 02; 14 in each case at least one elevator 05 a total thickness T from 2.0 to 6.5 mm, in particular from 2.3 to 5.9 mm.
  • the slope .DELTA.P / .DELTA.S of the spring characteristic is at least in the pressure-relevant area (see above) below 700 (N / cm 2 ) / mm, in particular below 500 (N / cm 2 ) / mm.
  • Shaping and transfer cylinder 01; 02; 14; 16 are set in pairs in such a way that the width B of the contact zone between the forming and transfer cylinders 01; 02; 14; 16 in Anstellage 10 to 25 mm, in particular 12 to 21 mm.
  • z. B. coated papers - for the advantageous width of the contact zone z. B. 14 to 35 mm, in particular 17 to 21 mm.
  • This configuration largely minimizes the sensitivity to vibration and inexact positioning while maintaining high print quality.
  • the individual drives by the drive motor 17 support this by the mechanical decoupling.
  • the forme cylinders are 01; 16 and the transfer cylinder 02; 14 as a cylinder 01; 02; 14; 16 simple circumference, ie with a circumference of substantially a standing pressure side, especially from a newspaper page executed. They are with effective diameters D wGZ ; D wPZ running between 150 to 190 mm.
  • the transfer cylinder 02; 11 each at least one elevator 05 a total thickness T from 2.0 to 6.5 mm, in particular from 2.3 to 5.9 mm.
  • the slope ⁇ P / ⁇ S of the spring characteristic is again below 700 (N / cm 2 ) / mm, in particular below 500 (N / cm 2 ) / mm, at least in the pressure-relevant area (see above).
  • Shaping and transfer cylinder 01; 02; 14; 16 are set in pairs in such a way that the width B of the contact zone between the forming and transfer cylinders 01; 02; 14; 16 in Anstellage 7 to 18 mm, in particular 9 to 15 mm.
  • z. B. coated papers for the advantageous width of the contact zone z. B. 10 to 25 mm, in particular 14 to 19 mm.
  • the transfer cylinder 02; 14 each at least one elevator 05 a total thickness T from 2.0 to 6.5 mm, in particular from 2.3 to 5.9 mm.
  • the slope ⁇ P / ⁇ S of the spring characteristic is again below 700 (N / cm 2 ) / mm, in particular below 500 (N / cm 2 ) / mm, at least in the pressure-relevant area (see above).
  • Shaping and transfer cylinder 01; 02; 14; 16 are set in pairs in such a way that the width B of the contact zone between the forming and transfer cylinders 01; 02; 14; 16 in Anstellage 8 to 20 mm, in particular 9 to 17 mm.
  • z. B. coated papers for the advantageous width of the contact zone z. B. again 14 to 35 mm, in particular 17 to 21 mm.
  • a printing unit 19 is shown, which is either part of a larger printing unit, such.
  • B. a five-cylinder, nine-cylinder or ten-cylinder printing unit is, or is operable as a three-cylinder printing unit 19.
  • the transfer cylinder 02 acts here with a cylinder leading to no ink 18, z.
  • B. a counter-pressure cylinder 18 such as in particular a satellite cylinder 18, together.
  • the "soft" lateral surface of the transfer cylinder 02 now interacts with the "hard” lateral surface of the forme cylinder 01 on one side, and with the "hard” lateral surface of the satellite cylinder 18 on the other side.
  • the one or more satellite cylinders 18 have their own drive motor 17, while the pair of forming and transfer cylinders 01; 02 mechanically coupled by a common drive motor (Fig. 6), or are each driven by a separate drive motor 17 mechanically independent of each other (Fig. 7).
  • Form cylinder 01, transfer cylinder 02 and satellite cylinder 18 are in a first embodiment (Example 4) for Figure 6 or 7 as a cylinder 01; 02; 18 double circumference with effective diameters D wGZ ; D wPZ made between 260 to 400 mm, in particular 280 to 350 mm.
  • the transfer cylinder 02, 14 On the lateral surface of the core 04, the transfer cylinder 02, 14 in each case at least one elevator 05 a total thickness T from 2.0 to 6.5 mm, in particular from 2.3 to 5.9 mm.
  • the slope .DELTA.P / .DELTA.S of the spring characteristic is at least in the pressure-relevant area (see above) below 700 (Ncm 2 /) mm, in particular below 500 (Ncm 2 /) mm.
  • Shaping and transfer cylinder 01; 02 as well Transfer cylinder 02; and satellite cylinders 18 are each paired in such a position that the width B of the contact zone in Anstellage each 10 to 25 mm, in particular 12 to 21 mm.
  • For rough paper increase the width B in the transmission satellite cylinder knob by at least 2 mm, preferably by 3 mm.
  • a second embodiment for Fig. 6 or 7 are forme cylinder 01, transfer cylinder 02 and satellite cylinder 18 as a cylinder 01; 02; 18 simple circumference, ie with a circumference of substantially a standing pressure side, in particular from a newspaper page executed. They are with effective diameters D wGz ; D wPZ made between 120 to 180 mm, in particular 130 to 170 mm.
  • the transfer cylinder 02; 14 in each case at least one elevator 05 a total thickness T from 2.0 to 6.5 mm, in particular from 2.3 to 5.9 mm.
  • the slope ⁇ P / ⁇ S of the spring characteristic is again below 700 (N / cm 2 ) / mm, in particular below 500 (N / cm 2 ) / mm, at least in the pressure-relevant area (see above).
  • Shaping and transfer cylinder 01; 02 and transfer cylinder 02; and satellite cylinders 18 are each paired in such a position that the width B of the contact zone in Anstellage each 7 to 18 mm, in particular 9 to 15 mm.
  • This applies - especially for smooth papers (see above) - eg both for the Nipp between transfer and forme cylinder 02; 01 and those between transmission and satellite cylinder 02; 18.
  • For rough paper increase the width B in the transmission satellite cylinder knob by at least 2 mm, preferably by 3 mm.
  • Fig. 6 or 7 For an embodiment not shown (Example 6) for Fig. 6 or 7 are transfer cylinder 02 and satellite cylinder 18 as a cylinder 01; 02; 18 double circumference, ie with a circumference of substantially two standing printed pages, especially newspaper pages, and the forme cylinder 01 executed with a simple scope.
  • the positions are to be selected such that in the Nipp between form and transfer cylinder 01, 02, the widths B from the above-mentioned third embodiment (Example 3) of the double printing unit are achieved, while for the Nippstelle between transmission and satellite cylinder 02, 18 are those of the first embodiment (Example 4) to apply to Figures 6 and 7.
  • Fig. 6 or 7 For a further embodiment not shown (Example 7) for Fig. 6 or 7 are form and transfer cylinder 01; 02 as a cylinder 01; 02; 18 simple size, d. H. with a circumference of substantially one standing pressure side, in particular the newspaper side, and the satellite cylinder 18 with double circumference.
  • the jobs are to be selected in such an advantageous manner that in the Nipp between form and transfer cylinders 01, 02, the widths B from the o.g. second embodiment (Example 2) of the double printing unit, while for the Nippstelle between transmission and satellite cylinders 02, 18 that of the second embodiment (Example 5) are to apply to the figures 6 and 7.
  • the aforementioned elevator 05 or the layer 06 is z. B. in a printing unit with one or more long, but slender cylinders 01; 02; 14; 16 arranged.
  • the forme cylinder 01; 16 and the transfer cylinder 02; 14 z. B. in the area their bale each have a length which four or more widths of a printed page, z. B. a newspaper page, z. B. 1100 to 1,800 mm, in particular 1,500 to 1,700 mm corresponds.
  • the diameter D wGZ ; D wPZ at least of the forme cylinder 01; 16 is z. B. 150 to 190 mm, in particular 145 to 185 mm, which corresponds in scope substantially a length of a newspaper page ("single circumference").
  • the device is advantageous in which the ratio between the diameter and length of the cylinder 01, 02; 14; 16; 18 is less than or equal to 0.16, in particular less than 0.12, or even less than or equal to 0.08.
  • the diameter of at least the forme cylinder 01; 16 is z. B. at 260 to 400 mm, in particular at 260 to 340 mm, which corresponds in scope substantially two lengths of a newspaper page ("double circumference").
  • a ratio of the diameter D wGZ ; D wPZ at least of the forme cylinder 01; 16 to its length here is 0.11 to 0.17, in particular 0.13 to 0.16.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Friction Gearing (AREA)

Claims (60)

  1. Habillage placé sur une surface d'enveloppe d'un rouleau (02 ; 14) présentant au moins une couche active (6) élastique et/ou compressible avec un pressage de surface (P) dépendant d'un enfoncement (S), caractérisé en ce que l'habillage (05) présente une ou plusieurs couches (06) actives élastiques et/ou compressibles, ayant un module d'élasticité, en direction radiale du rouleau (02 ; 14), inférieur à 50 N/mm2, cette couche (06) active ou ces couches (06) actives, au total, présentant une dépendance entre la pression de surface (P) et l'enfoncement (S), dont la pente de la courbe (ΔP/ΔS), au moins dans une plage de travail globale pour le pressage de surface de 40 à 60 N/cm2, est inférieure à 400 (N/cm2)/mm.
  2. Habillage placé sur une surface d'enveloppe d'un rouleau (02 ; 14) présentant au moins une couche active (6) élastique et/ou compressible, avec un pressage de surface (P) dépendant d'un enfoncement (S), caractérisé en ce que l'habillage (05) présente une ou plusieurs couches (06) actives élastiques et/ou compressibles, ayant un module d'élasticité en direction radiale du rouleau (02 ; 14) inférieur à 50 N/mm2, cette couche (06) active, respectivement ces couches (06) actives, au total, présentant une dépendance entre la pression de surface (P) et l'enfoncement (S), dont la pente de la courbe (ΔP/ΔS), au moins dans une plage de travail globale pour le pressage de surface de 25 à 40 N/cm2, est inférieure à 200 (N/cm2)/mm.
  3. Habillage placé sur une surface d'enveloppe d'un rouleau (02 ; 14) présentant au moins une couche (6) active élastique et/ou compressible avec un pressage de surface (P) dépendant d'un enfoncement (S), caractérisé en ce que l'habillage (05) présente une ou plusieurs couches (06) actives élastiques et/ou compressibles, ayant un module d'élasticité, en direction radiale du rouleau (02 ; 14), inférieur à 50 N/mm2, cette couche (06) active ou ces couches (06) actives, au total, présentant une dépendance entre la pression de surface (P) et l'enfoncement (S), dont la pente de la courbe (ΔP/ΔS), au moins en un point de travail pour le pressage de surface de 100 N/cm2, est inférieure à 500 (N/cm2)/mm.
  4. Habillage selon la revendication 1 ou 2, caractérisé en ce que la pente de la courbe (ΔP/ΔS), dans la dépendance entre la pression de surface (P) et l'enfoncement (S) dans la plage de travail pour le pressage actif de 100 N/cm2, est inférieure à 700 (N/cm2)/mm.
  5. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que la pente de la courbe (ΔP/ΔS), dans la dépendance entre la pression de surface (P) et l'enfoncement (S) dans la plage de travail pour le pressage actif de 100 N/cm2 , est inférieure à 400 (N/cm2)/mm.
  6. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que la pente de la courbe (ΔP/ΔS), dans la dépendance entre la pression de surface (P) et l'enfoncement (S) dans une deuxième plage de travail globale de 40 à 80 N/cm2, est inférieure à 400 (N/cm2)/mm.
  7. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que la pente de la courbe (ΔP/ΔS), dans la dépendance entre la pression de surface (P) et l'enfoncement (S) dans l'ensemble de l'autre plage de travail de 40 à 60 N/cm2, est inférieure à 300 (N/cm2)/mm, en particulier inférieure à 200 (N/cm2)/mm.
  8. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que la pente de la courbe (ΔP/ΔS), dans la dépendance entre la pression de surface (P) et l'enfoncement (S) dans une autre plage de travail globale de 25 à 40 N/cm2, est inférieure à 200 (N/cm2)/mm, en particulier inférieure à 150 (N/cm2)/mm.
  9. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que la pente de la courbe (ΔP/ΔS), en cas d'application de l'habillage en offset humide, c'est-à-dire avec utilisation d'encre et d'agent humidifiant, au moins dans la plage de travail pour le pressage de surface de 80 à 100 N/cm2, est inférieure à 500 (N/cm2)/mm, en particulier inférieure à 400 (N/cm2)/mm.
  10. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que la pente de la courbe (ΔP/ΔS), en cas d'application de l'habillage en offset à sec, c'est-à-dire avec uniquement application d'encre et aucun agent humidifiant, au moins dans la plage de travail pour le pressage de surface de 120 à 150 N/cm2, est inférieure à 800 (N/cm2)/mm, en particulier inférieure à 600 (N/cm2)/mm.
  11. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que la pente de la courbe (ΔP/ΔS), en cas d'application de l'habillage en offset à sec, c'est-à-dire avec uniquement application d'encre et aucun agent humidifiant, au moins dans la plage de travail pour des pressages de surface de 150 à 180 N/cm2, est inférieure à 1000 (N/cm2)/mm, en particulier inférieure à 800 (N/cm2)/mm.
  12. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que la pente de la courbe (ΔP/ΔS), au moins dans une plage pour l'enfoncement de 0,22 à 0,38 mm, est inférieure à 500 (N/cm2)/mm.
  13. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que le quotient différentiel (ΔP/ΔS), au moins dans une plage pour l'enfoncement de 0,22 à 0,38 mm, est inférieur à 250 (N/cm2)/mm.
  14. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que le quotient différentiel (ΔP/ΔS) au moins dans une plage pour l'enfoncement de 0,30 à 0,50 mm est inférieur à 125 (N/cm2)/mm.
  15. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que la couche (06) ou une somme des couches (06) actives présente respectivement présentent une épaisseur (t) supérieure à 1,60 mm.
  16. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce que la couche (06) ou une somme des couches (06) actives présente, respectivement présentent, une épaisseur (t) supérieure à 1,90 mm, en particulier supérieure à 2,2 mm.
  17. Habillage selon la revendication 1, 2 ou 3, caractérisé en ce qu'il est réalisé sous forme d'habillage désolidarisable (05).
  18. Habillage selon la revendication 17, caractérisé en ce que l'habillage est à plusieurs couches et, outre la couche (06), il présente une couche support (10) pratiquement dimensionnellement stable, reliée rigidement à celle-ci.
  19. Habillage selon la revendication 15 ou 16, caractérisé en ce qu'il présente une épaisseur globale (T) d'au moins 2,00 mm.
  20. Habillage selon la revendication 15 ou 16, caractérisé en ce qu'il présente une épaisseur globale (T) supérieure à 2,3 mm, en particulier supérieure à 2,5 mm.
  21. Groupe d'impression comprenant au moins deux rouleaux (01 ; 02 ; 14 ; 16 ; 18) actifs, coopérant en position plaquée, où l'un des rouleaux (01 ; 02 ; 14 ; 16 ; 18) est réalisé sous forme de rouleau de transfert (02 ; 14) qui, dans une zone de sa surface d'enveloppe, présente un habillage (05) ayant au moins une couche (6) élastique et/ou compressible, caractérisé en ce que l'habillage (05) présente une ou plusieurs couches (06) actives élastiques et/ou compressibles, ayant un module d'élasticité en direction radiale du rouleau (02 ; 14) inférieur à 50 N/mm2, et en ce que les deux rouleaux (01 ; 02) en position plaquée sont disposés l'un par rapport à l'autre, de manière qu'une largeur (B), résultant de l'enfoncement (S) de la couche (06) d'une zone de contact entre les deux rouleaux (01 ; 02), perpendiculairement à un plan de liaison (V) de leurs axes de rotation dans l'intervalle de rouleau (03), fasse au moins 5 % d'un diamètre (DwGZ) actif, non perturbé, du rouleau (02) garni de la couche (06).
  22. Groupe d'impression selon la revendication 21, caractérisé en ce que l'enfoncement (S) absolu est d'au moins 0,18 mm.
  23. Groupe d'impression comprenant au moins deux rouleaux (01 ; 02 ; 14 ; 16 ; 18), coopérant en position plaquée, l'un des rouleaux (01 ; 02 ; 14 ; 16 ; 18) étant réalisé sous forme de cylindre de transfert (02 ; 14) et qui, dans la zone de sa surface d'enveloppe, présente un habillage (05) ayant une couche (6) élastique et/ou compressible, caractérisé en ce que l'habillage (05) présente une ou plusieurs couches (06) actives élastiques et/ou compressibles, ayant un module d'élasticité en direction radiale du rouleau (02 ; 14) inférieur à 50 N/mm2, en ce que la couche (06) ou une somme des couches (06) actives présente, respectivement présentent, une épaisseur (t) d'au moins 1,60 mm, et en ce que le cylindre de transfert (02 ; 14) et l'autre rouleau (01 ; 16 ; 18), en position plaquée, sont disposés l'un par rapport à l'autre, de manière qu'un enfoncement (S) de la couche (06), par une surface d'enveloppe pratiquement incompressible et non élastique de l'autre rouleau (01 ; 16 ; 18) dans la paire de rouleaux (03), soit d'une valeur d'au moins 0,18 mm.
  24. Groupe d'impression selon la revendication 21 ou 23, caractérisé en ce que l'habillage (05) est réalisé selon l'une ou plusieurs des revendications 1 à 19.
  25. Groupe d'impression selon la revendication 21 ou 23, caractérisé en ce que la zone de contact, résultant de l'enfoncement (S) de la couche (06), entre les deux rouleaux (01 ; 02), perpendiculairement à un plan de liaison de communications (V) de ses axes de rotation dans l'intervalle de rouleau (03), présente au moins une largeur (B) de 10 mm.
  26. Groupe d'impression selon la revendication 21 ou 23, caractérisé en ce que le rouleau (01 ; 16), coopérant avec le cylindre de transfert (02 ; 14), est réalisé sous forme de cylindre de forme (01 ; 16).
  27. Groupe d'impression selon la revendication 21 ou 23, caractérisé en ce que le rouleau (18), coopérant avec le cylindre de transfert (02 ; 14), est réalisé sous forme de cylindre satellite (18).
  28. Groupe d'impression selon la revendication 21 ou 23, caractérisé en ce qu'au moins l'un des deux rouleaux (01 ; 02 ; 14 ; 16) présente, sur sa surface d'enveloppe, au moins une perturbation (09 ; 11) influant sur le roulement.
  29. Groupe d'impression selon la revendication 26, caractérisé en ce que le rouleau (01 ; 16), coopérant avec le rouleau (02 ; 14) présentant la couche (06), présente sur sa surface d'enveloppe au moins une perturbation (09) influant sur le roulement, qui est provoquée par une ouverture d'un canal (09) s'étendant axialement ou de plusieurs ouvertures s'étendant axialement, pour la fixation d'extrémités d'un ou plusieurs habillages (05).
  30. Habillage selon la revendication 1, 2 ou 3 ou groupe d'impression selon la revendication 21 ou 23, caractérisé en ce que le rouleau (02 ; 14) présentant la couche (06) présente, sur sa surface d'enveloppe, au moins une perturbation (09 ; 11) influant sur le roulement, qui est provoquée par une ouverture d'un canal (11) s'étendant axialement, ou par plusieurs ouvertures s'étendant axialement, pour la fixation d'extrémités d'un ou plusieurs habillages (05).
  31. Groupe d'impression selon la revendication 28, caractérisé en ce que la perturbation (09 ; 11) est provoquée par une ouverture d'un canal (09 ; 11) s'étendant axialement, ou de plusieurs ouvertures s'étendant axialement, pour la fixation d'extrémités d'un ou plusieurs habillages (05 ; 08).
  32. Groupe d'impression selon la revendication 21 ou 23 et l'une des revendications 29, 30 ou 31, caractérisé en ce qu'une largeur (B) d'une zone de contact résultant de l'enfoncement (S) de la couche (06) entre les deux rouleaux (01 ; 02), dans l'intervalle entre rouleaux (03), en observant perpendiculairement à un plan de liaison (V) de ses axes de rotation, par rapport à une largeur (B09 ; B11) du canal (09 ; 11), dans la zone de son ouverture par rapport à la surface d'enveloppe, en direction périphérique, est au moins dans un rapport 3 : 1.
  33. Groupe d'impression selon la revendication 29, 30 ou 31, caractérisé en ce que la largeur (B09 ; B11) du canal (09 ; 11), dans la zone de son ouverture par rapport à la surface d'enveloppe, en direction périphérique, est d'une valeur maximale de 5 mm.
  34. Groupe d'impression selon la revendication 26, caractérisé en ce que les cylindres de forme et de transfert (01 ; 02 ; 14 ; 16) sont entraînés, de façon couplée mécaniquement, par un moteur d'entraînement (17) commun.
  35. Groupe d'impression selon la revendication 26, caractérisé en ce que les cylindres de forme et de transfert (01 ; 02 ; 14 ; 16), réalisés sous forme de paires de cylindres (01, 02 ; 14, 16), sont entraînés, de façon mécaniquement indépendante, par une ou plusieurs paires de cylindres (01, 02 ; 14, 16), ou par un cylindre satellite (18).
  36. Groupe d'impression selon la revendication 26, caractérisé en ce que les cylindres de forme et de transfert (01 ; 02 ; 14 ; 16) sont entraînés, mécaniquement indépendamment les uns des autres, chaque fois par un moteur d'entraînement (17) spécifique.
  37. Groupe d'impression selon la revendication 26 ou 35, caractérisé en ce que le cylindre satellite (18) présente un moteur d'entraînement (17) spécifique, indépendamment mécaniquement d'autres cylindres (01 ; 02 ; 14 ; 16).
  38. Groupe d'impression selon la revendication 21 ou 23, caractérisé en ce qu'au moins le cylindre de transfert (02 ; 14) est réalisé avec une circonférence de pages d'impression verticales, essentiellement au nombre de deux, au format journal.
  39. Groupe d'impression selon la revendication 21 ou 23, caractérisé en ce que les rouleaux (01 ; 02 ; 14 ; 16 ; 18), dans la zone de leur corps de rouleau, présentent chacun une longueur correspondant à au moins cinq, en particulier au moins six largeurs d'une page d'impression au format journal.
  40. Groupe d'impression selon la revendication 26, caractérisé en ce qu'au moins le cylindre de forme (01 ; 16) est réalisé avec une circonférence essentiellement d'une page d'impression verticale au format journal.
  41. Groupe d'impression selon la revendication 21 ou 23, caractérisé en ce que les rouleaux (01 ; 02 ; 14 ; 16 ; 18), dans la zone de leur corps de rouleau, présentent chacun une longueur correspondant au moins à trois, en particulier au moins à quatre largeurs d'une page d'impression en format journal.
  42. Groupe d'impression selon la revendication 26, caractérisé en ce qu'un rapport, entre un diamètre actif et la longueur d'au moins le cylindre de forme (01 ; 16), est inférieur ou égal à 0,16.
  43. Groupe d'impression selon la revendication 21 ou 23, caractérisé en ce que les deux rouleaux (01 ; 02 ; 14 ; 16 ; 18), en position plaquée en fonctionnement, sont plaqués l'un sur l'autre avec une pression de surface dans la fourchette de 25 à 40 N/cm2.
  44. Groupe d'impression selon la revendication 21 ou 23, caractérisé en ce que les deux rouleaux (01 ; 02 ; 14 ; 16 ; 18), en position plaquée en fonctionnement, sont plaqués l'un sur l'autre avec un pressage de surface dans la fourchette de 40 à 80 N/cm2, en particulier de 40 à 80 N/cm2.
  45. Groupe d'impression selon la revendication 21 ou 23, caractérisé en ce que les deux rouleaux (01 ; 02 ; 14 ; 16 ; 18), en position plaquée en fonctionnement, sont plaqués l'un sur l'autre avec un pressage de surface dans la fourchette de 80 à 120 N/cm2, en particulier de 80 à 100 N/cm2.
  46. Groupe d'impression avec au moins deux rouleaux (01 ; 02 ; 14 ; 16 ; 18) coopérant en position plaquée, au moins l'un des rouleaux (01 ; 02 ; 14 ; 16 ; 18), dans la zone de sa surface d'enveloppe, présente au moins une ouverture d'un canal (09 ; 11) s'étendant axialement, pour la fixation d'au moins une extrémité d'un ou plusieurs habillages (05 ; 08), et l'un des rouleaux (01 ; 02 ; 14 ; 16 ; 18), dans la zone de sa surface d'enveloppe, présente au moins une couche (06) élastique et/ou compressible, et où, en position plaquée, par l'enfoncement (S) de la couche (06) est formée, entre les deux rouleaux (01 ; 02), une zone de contact d'une largeur (B) résultante, perpendiculairement à un plan de liaison (V) de ses axes de rotation, caractérisé en ce que les au moins une couches (06) actives élastiques et/ou compressibles présentent un module d'élasticité, en direction radiale du rouleau (02 ; 14), inférieur à 50 N/cm2, et en ce qu'une largeur (B09 ; B11) du canal (09 ; 11), dans la zone de son ouverture par rapport à la surface d'enveloppe en direction périphérique, est, par rapport à la largeur (B) de la zone de contact, dans un rapport maximal de 1 : 1.
  47. Habillage selon la revendication 15 ou 16 ou groupe d'impression selon la revendication 24, caractérisé en ce que l'on prend en considération comme épaisseur (t) de la couche (06) en direction radiale, uniquement la couche qui présente un module d'élasticité inférieur à 50 N/mm2.
  48. Habillage selon la revendication 15 ou 16, ou groupe impression selon la revendication 24, caractérisé en ce que, en tant qu'épaisseur (t) de la couche (06) en direction radiale, on prend en considération la somme des épaisseurs uniquement des couches qui présentent un module d'élasticité inférieur à 50 N/mm2.
  49. Habillage selon la revendication 47 ou 48, caractérisé en ce que la couche (06) élastique et/ou compressible contient une couche présentant des pores, ayant un module d'élasticité inférieur à 50 N/mm2.
  50. Habillage selon la revendication 47 ou 48, caractérisé en ce que la couche (06) élastique et/ou compressible présente une couche présentant des pores, ayant un module d'élasticité inférieur à 50 N/mm2, et une couche de couverture, différente de la couche poreuse, ayant un module d'élasticité inférieur à 50 N/mm2.
  51. Habillage selon la revendication 47 ou 48, caractérisé en ce que l'habillage, outre la couche (06) élastique et/ou compressible ayant un module d'élasticité inférieur à 50 N/mm2, à des fins de soutien et/ou de transfert, présente une couche de couverture (15) différente de la couche poreuse, ayant un module d'élasticité supérieur à 100 N/mm2, en particulier supérieur à 300 N/mm2.
  52. Habillage selon la revendication 1, 2 ou 3 ou groupe d'impression selon la revendication 21, 23 ou 46, caractérisé en ce que le rouleau (02 ; 14), présentant la couche (06), est disposé de façon à coopérer en fonctionnement avec une bande de matériau à imprimer (03).
  53. Habillage selon la revendication 1, 2 ou 3 ou groupe d'impression selon la revendication 21, 23 ou 46, caractérisé en ce que le rouleau (02 ; 14) présentant la couche (06), en fonctionnement coopère avec un matériau à imprimer réalisé sous forme de papier.
  54. Habillage ou groupe d'impression selon la revendication 53, caractérisé en ce que le papier présente un grammage de 8 à 150 g/m2, en particulier de 30 à 80 g/m2.
  55. Habillage ou groupe d'impression selon la revendication 53, caractérisé en ce qu'une surface du papier n'est pas enduite ou couchée, ou présente de faibles poids de couchage, allant jusqu'à 25 g/m2, en particulier de 5 à 20 g/m2 de poids de couchage.
  56. Habillage selon la revendication 1, 2 ou 3 ou groupe d'impression selon la revendication 21, 23 ou 46, caractérisé en ce que l'habillage (05) est réalisé sous la forme de blanchet métallique, avec une couche support (10) en métal, en particulier en tôle d'acier spécial.
  57. Habillage selon la revendication 56, caractérisé en ce que l'épaisseur de la couche support (10) métallique est dans la fourchette de 0,1 à 0,3 mm.
  58. Habillage selon la revendication 1, 2 ou 3 ou groupe d'impression selon la revendication 21, 23 ou 46, caractérisé en ce que l'habillage (05) est disposé dans le groupe d'impression d'une machine à imprimer les journaux.
  59. Habillage selon la revendication 1, 2 ou 3 ou groupe d'impression selon la revendication 21, 23 ou 46, caractérisé en ce que l'habillage (05) est disposé dans le groupe d'impression d'une machine à imprimer de travaux de ville.
  60. Habillage selon la revendication 1, 2 ou 3 ou groupe d'impression selon la revendication 21, 23 ou 46, caractérisé en ce que l'habillage (05) est disposé dans le groupe d'impression d'une machine à imprimer rotative à bobines électriques.
EP04105168A 2003-10-21 2004-10-20 Habillage placé sur un cylindre et groupes d'impression d'une machine à imprimer comportant ledit cylindre Not-in-force EP1525997B1 (fr)

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DE10349387 2003-10-21
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AT (1) ATE320923T1 (fr)
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NL244435A (fr) 1958-10-16 1900-01-01
GB1250912A (fr) 1968-08-10 1971-10-27
FR2659903B1 (fr) 1990-03-23 1994-11-04 Rollin Sa Element elastique et compressible d'impression formant blanchet.
JP2938403B2 (ja) * 1996-12-13 1999-08-23 住友ゴム工業株式会社 印刷用ブランケット
DE19940429A1 (de) 1999-08-26 2001-03-08 Contitech Elastomer Besch Gmbh Gummituchhülse für eine Offset-Druckmaschine
DK1310363T3 (da) * 1999-12-02 2004-03-29 Koenig & Bauer Ag Trykværk i en rotationstrykkemaskine
DE50010411D1 (de) 2000-11-24 2005-06-30 Contitech Elastomer Besch Gmbh Drucktuch für Offset-Druck-Anwendungen
DE10237205B4 (de) * 2002-04-18 2009-02-12 Koenig & Bauer Aktiengesellschaft Aufzug auf einer Walze, Anordnungen der Walze zu einer zweiten Walze sowie Druckwerke einer Druckmaschine mit der Walze

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EP1525997A1 (fr) 2005-04-27
DE502004000383D1 (de) 2006-05-11
ATE320923T1 (de) 2006-04-15

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