Classifications

• • 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
  • B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
• • 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
  • B41N10/04—Blanket structure multi-layer
• • 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
  • B41N2210/14—Location or type of the layers in multi-layer blankets or like coverings characterised by macromolecular organic compounds

Definitions

• the invention relates to a base material for a printing form, a printing device, and a printing blanket for printing uneven substrates according to the preamble of claims 1, 8 and 10.
• a printed image is applied to a printing medium inside the printing unit by rolling cylinders and drums that transmit and transfer the printing medium.
• the print image is generated on a printing form or printing plate and, if necessary, passed on to the printing material via a transfer cylinder.
• a printing form or printing plate provided with raised printing surfaces is used for this purpose, by means of which the printed image can be applied directly to the printing material.
• Offset printing an indirect printing process, is a widespread planographic printing process in which the print image in the form of the color material is transferred from a printing form or printing plate to a transfer cylinder, which is referred to as a blanket cylinder.
• the surface of the printing form or printing plate is provided with lipophilic, that is to say water-repellent, areas in accordance with the image to be printed, so that the lipophilic ink applied by an inking unit adheres there.
• the printing image is then transferred from the printing blanket cylinder, more precisely from a printing blanket which is clamped onto the printing blanket cylinder and explained below, to the printing material.
• the print image is transferred from a printing form to a transfer cylinder, which is referred to as a blanket cylinder. From this the print image is then transferred to the printing material.
• a flexible layer is usually applied to the blanket cylinder.
• a so-called printing blanket or rubber blanket is used for this. This blanket is dimensionally stable in its plane of expansion, but can be deformed transversely to it. It can also be compressible to a certain extent in the direction of its thickness. For this purpose, it is known that compressible layers are provided within a printing blanket.
• a flexible layer is usually applied to the blanket cylinder;
• a so-called printing blanket or rubber blanket is used for this purpose, which is essentially dimensionally stable in its plane of expansion, but is deformable transversely to it.
• the printing blanket can also be compressible to a certain extent in the direction of its thickness; for this purpose it is known that compressible layers are provided within the printing blanket.
• the printed image in the form of the color material is then deposited on the printing material, that is to say, for example, on the paper to be printed or on the cardboard to be printed.
• Blankets or the printing blankets used in offset printing are required in the offset printing process when transferring the print image, above all to compensate for unevenness in the surface of the printing substrate. Since the printing forms or printing plates for offset printing are usually formed from thin sheets or foils, they cannot adapt to the surface structure of the printing material to a sufficient extent.
• a printing blanket must be pressed against the counter-pressure cylinder by the blanket cylinder against the impression cylinder with a relatively high contact pressure in order to adapt it to the surface structure of the printing substrate; this cannot be avoided by using so-called compressible printing blankets because they only have a higher deformability than normal printing blankets, but also require a comparatively high contact pressure.
• corrugated cardboard when printing on corrugated boxes, there is a special problem that is related to the internal structure of corrugated boxes. Since a corrugated connection layer is provided between two cover layers in corrugated cardboard to make it lighter, a corrugated cardboard is not a homogeneous material. The cover layers used on the top and bottom of such corrugated cardboard are only at certain points or linear and are offset on both sides connected to each other by means of a corrugated intermediate layer. When a corrugated cardboard is loaded, uneven conditions arise across the surface; in particular, each cover layer is flexible in the areas between the connection points with the corrugated intermediate layer and can therefore dodge in these areas under load. As a result, the stress in a printing process results in relatively unfavorable conditions for uniform printing.
• a foam layer is provided as a base, for example is applied to a tensile base.
• the printing form or printing plate is enabled to follow irregularities on the surface of the printing material to a limited extent.
• a deterioration in the print quality is accepted, which inevitably results from the deformation of the printing form or printing plate; this is also related to the usually very inhomogeneous distribution of printing and non-printing areas on a printing form or printing plate; in addition, registering the printing forms or printing plates for the different printing inks is very difficult.
• compressible printing blankets a procedure that is not comparable with the above-mentioned method of supporting a printing form or printing plate is used.
• the compressible printing blanket enables deformations by reducing the thickness only under comparatively high pressure.
• the one to adapt to the surface structure of the corrugated cardboard necessary deformations in such printing blankets would inevitably lead to the destruction of the corrugated cardboard in the printing process before the printing blanket could deform sufficiently.
• no method is known by means of which a highly uniform pressure distribution is possible in offset printing when processing a corrugated cardboard in a printing process.
• the disadvantages and shortcomings described above by way of example can be generalized to the extent that the rotary cylinders involved in the printing process of the offset process are generally made of hard material, such as metal.
• the printing form or printing plate is also made of solid material, such as metal, such as aluminum, zinc or the like, or of plastic. Due to the dimensional stability of these materials, unevenness and imbalance can occur which negatively affect the printed image.
• the rigidity of the materials mentioned means that changing a printing form or printing plate can be difficult insofar as there is no flexibility to compensate for tolerances.
• a tubular blanket for a blanket cylinder in an offset printing press comprising a cylindrical sleeve, a compressible layer over the sleeve and an inextensible layer over the compressible layer.
• the cylindrical sleeve can be moved telescopically on the rubber cylinder.
• the compressible layer comprises a first seamless, tubular body made of an elastomer, which contains compressible microspheres.
• the non-stretchable layer comprises a second seamless body made of an elastomer, which has a tubular bottom layer made in the circumferential direction contains undrawn material.
• a seamless, tubular print layer over the non-stretchable layer has a continuous, gapless, cylindrical print surface.
• a further embodiment of a printing blanket is described in US Pat. No. 5,934,192.
• an open-cell, compressible layer and a closed-cell, compressible layer are provided within a superficial printing layer, the printing blanket should have the advantages of two compressible layers.
• the printing blanket itself is used in the form of a seamless cylinder, in which a compressible layer with an open-cell structure and a compressible layer with a closed-cell structure are provided within a superficial printing layer, the compressible layer with the open-cell structure being arranged within the compressible layer with a closed-cell structure ,
• the present invention is based on the object of improving an offset printing machine of the type described at the outset in such a way that an improved printed image is obtained, that it is possible to change printing plates more quickly and easily and that high-quality printed images can be printed on uneven substrates , especially on a corrugated cardboard. Therefore, it aims present invention on a high-quality and seen uniformly over the surface generation of print images on the substrate, for example on a paper web or on a corrugated cardboard in the offset printing process; the printing material, for example the paper web or the corrugated cardboard, should not be mechanically damaged in any way.
• a substructure material with the features specified in claim 1 and by a printing device, preferably by an offset printing device, with the features specified in claim 8 and with a printing blanket with the features of claim 10.
• the teaching of the present invention provides a substructure material for a printing form, such as planographic printing plate, printing plate, or planographic printing plate, and / or for a printing blanket, such as rubber blanket, or special compressible or incompressible rubber blanket, and / or for another area involved in the printing process during printing, as in offset printing, whereby for printing devices, in particular for offset printing machines, the substructure material as an interchangeable, radially to the printing form or printing plate and / or the printing blanket and / or the other surface associated with the printing process associated cylinder or radially to the associated drum elastically deformable composite is formed, the composite as a stretchable base, such as a stretchable printing plate base or printing plate base and / or as a stretchable Blanket pad, is formed and is made up of at least one compressible layer and at least one incompressible layer, the compressible layer being designed as a reversibly compressible functional layer and made of microcellular, preferably open-pore material, such as foam, in particular polyurethane foam, and
• the substructure material By designing the substructure material as an interchangeable, radially elastically deformable composite or radially to the respective drum, unevenness, dimensional tolerances and imbalances in the components involved in the printing process can be compensated for. In this way, an equalization and thus an improvement in the printed image can be achieved.
• the substructure material according to the present invention which can be formed in the composite as a stretchable underlay, in particular as a stretchable printing plate underlay or printing plate underlay and / or as a stretchable printing blanket underlay, surprisingly, in addition to increasing the print quality, the retrofitting of an offset printing device is also facilitated .
• the base material ensures, due to its (radial) elasticity, that any dimensional tolerances between printing form or printing plate and forme cylinder are compensated for.
• the printing form or printing plate can therefore be fixed with a firm fit on the form cylinder.
• the flexible substructure material under the printing blanket enables an increased deformation of the printing blanket radially to the printing blanket cylinder during the printing process.
• the deformation is possible with a lower force than the deformation of a compressible blanket.
• the length stability of the printing blanket is maintained, which ensures good print quality and enables printing on an uneven surface, such as on corrugated cardboard, in offset printing.
• the composite is made up of at least one compressible layer and at least one incompressible layer.
• the compressible layer which can preferably be designed as a reversibly compressible functional layer, unevenness, dimensional tolerances and unbalance of the components involved in the printing process can be compensated. In this way, an equalization and thus an improvement in the printed image can be achieved.
• the compressible layer By connecting the compressible layer with an incompressible layer, it is ensured at the same time that the substructure material can be handled in an advantageous manner, so that the substructure material can in particular be attached to one of the cylinders involved in the printing process with sufficient stability.
• the connection of the compressible layer with an incompressible layer gives the composite material an overall increased stability, so that forces introduced into the compressible layer can only bring about a limited deformation of the substructure material.
• the compressible layer of the substructure material can be a microcellular, preferably open-pore material.
• a cellular structure like a foam allows the compressibility of the material to be set as desired; If the microcellular compressible layer is expediently formed from polyurethane foam, a high level of durability is associated with the desired compressibility.
• the base material can be optimally selected with regard to properties other than compressibility, for example with regard to its tear resistance and / or its chemical resistance.
• the compression behavior of the overall material is in fact generated by its cellular structure, which the user can set to a certain extent depending on the respective requirements and regardless of the base material.
• the incompressible layer which according to an inventive development is designed as a dimensionally stable carrier layer, in particular as a dimensionally stable plate or film, can advantageously be wholly or partly at least one plastic, preferably polyester.
• a material is inexpensive, of high durability and at the same time flexible in terms of bending or dimensionally stable against tension. Furthermore, such a material can be easily combined with other materials to form a composite material.
• the substructure material can contain one or more further layers, which can in particular contain an adhesive material, a filler material and / or other auxiliary materials.
• an adhesive material serves to connect adjacent layers, that is to say in particular to connect an incompressible layer to a compressible layer.
• Filling materials are used to give the substructure material a desired volume (-> layer thickness) without otherwise influencing the material properties.
• layers of other auxiliary materials can be provided which, for example, improve the connection to the supporting cylinder, to the printing form or printing plate, to the printing blanket or the like, or to make certain outer surfaces available.
• the substructure material contains at least two compressible layers, these preferably having a different structure with regard to the base material and / or with regard to the structure (porosity) and / or a different thickness.
• the behavior of the substructure material when pressure is applied can be controlled. For example, a thicker or more compressible layer in direct contact with the printing form or printing plate can achieve good local absorption of pressure and force peaks, whereas a firmer (thinner) material in a lower layer ensures that greater forces are introduced spread over a larger area.
• the substructure material contains at least two incompressible layers, which in turn can in particular have a different structure with regard to the base material and / or the structure and / or a different thickness.
• These measures can also be used to control the behavior of the substructure material.
• the layers that are in direct contact with carrier elements can be optimally designed for connection to them; this means that these materials have, for example, sufficient (tear) strength and / or sufficient thickness for attachment to a cylinder.
• layers located in the interior of the substructure material can be minimized to a thickness which is sufficient to be able to fulfill their carrier function within the overall composite.
• the total (layer) thickness of the flat substructure material composed of at least two layers can be of the order of magnitude about 0.5 millimeters to about 4 millimeters, in particular from about 1.5 millimeters to about 2.5 millimeters.
• existing pressure equipment can be retrofitted with the substructure material without or without significant changes in order to compensate for unevenness in the desired manner.
• the present invention also includes a printing device, in particular offset printing device, for printing on printing materials, preferably paper or cardboard, with in particular an uneven surface, such as corrugated cardboard, with a forme cylinder on which a printing form, such as planographic printing form, or printing plate, or Planographic printing plate, is clamped and a printing blanket cylinder on which an essentially dimensionally stable printing blanket, such as rubber blanket, or a special compressible or incompressible rubber blanket, is stretched and an impression cylinder, wherein the forme cylinder and / or the printing blanket cylinder and / or the impression cylinder and / or other surfaces involved in the printing are coated on their surface with a substructure material, the substructure material being exchangeable, assigned radially to the printing form or printing plate and / or the printing blanket and / or the other surface involved in the printing process ylinder or radially to the associated drum is elastically deformable composite and the composite is designed as a stretchable underlay, such as a stretchable printing plate underlay or printing plate under
• This printing device is characterized in that the form cylinder and / or the blanket cylinder and / or the impression cylinder and / or other surfaces involved in the printing are coated on their surface with the substructure material described above. Due to the properties of the substructure material explained, a printing result of improved quality can be achieved with such a printing device. If the substructure material on the forme cylinder that the Carries printing form or printing plate, is attached, a conversion of this forme cylinder with different printing forms or printing plates can be carried out more easily and easily.
• a printing blanket with the features of claim 10 provides the following advantages:
• a flexible base layer on the underside or within the printing blanket enables an increased deformation of the printing blanket radially to the printing blanket cylinder during the printing process.
• the deformation is possible with a lower force than the deformation of a known compressible printing blanket.
• the length stability of the printing blanket is maintained, ensuring good print quality.
• This makes printing on an uneven surface of any substrate, such as. B. with Weilkarton, possible in offset printing.
• FIGS. 1 to 5 Identical or similar configurations, elements or features are provided with identical reference numerals in FIGS. 1 to 5.
• the printing template is in the form of a so-called printing form or printing plate 11 on a first rotating cylinder, the form cylinder 10; this forme cylinder 10 is sometimes referred to as a plate cylinder.
• the surface of the printing plate 11 consists, according to the contours to be printed, of hydrophilic (that is to say water-friendly) or lipophilic (that is to say fat-friendly) areas, so that the inking unit (not shown in FIG. 1 for reasons of clarity of illustration) is applied lipophilic ink adheres only to the corresponding lipophilic areas.
• hydrophilic that is to say water-friendly
• lipophilic that is to say fat-friendly
• the forme cylinder 10 is in contact with a blanket cylinder 12.
• the surface of this blanket cylinder 12 is covered by a blanket 13.
• the ink on the printing plate 11 is transferred to the blanket 13.
• the blanket cylinder 12 rotates further, this ink is again deposited on the paper web 14 to be printed.
• the paper web 14 is guided here via an impression cylinder 15 (sometimes also referred to as a forme cylinder), which ensures a corresponding contact pressure on the rubber blanket 13.
• the offset printing method exemplified with reference to FIGS. 1 and 2 (-> first exemplary embodiment) is improved in that a base material 100 is formed between the forme cylinder 10 and the printing plate 11 and / or between the blanket cylinder 12 and the blanket 13 and / or on the impression cylinder 15 is applied, which is formed by a composite of a compressible layer and an incompressible layer.
• the base material 100 allows high printing speeds.
• FIG. 2 A typical layer structure of the substructure material 100 is shown in FIG. 2.
• the substructure material 100 arranged on a carrier 19 has three different layers 16, 17 and 18:
• the different layers 16, 17 and 18 can be connected to one another by adhesive layers.
• the plastic plate or plastic film 17 ensures sufficient strength of the substructure material 100.
• the compressible layers 16 and 18 arranged on both outer surfaces of the sandwich material make it possible to compensate for unevenness in both the cylinder 19 and a support, such as a pressure plate 11.
• the upper side 20 of the polyurethane cushion 16 is preferably smooth (and without adhesive) in order to be particularly suitable for the application of a rubber blanket 13.
• the sandwich structure of the substructures is particularly characterized by compressible foam cushions of various types and by plastic plates or Plastic films formed.
• one or more, in particular different, polyurethane cushions can be combined with one or more, in particular, different plastic sheets or plastic foils; the thickness of the polyurethane cushions and / or plastic plates or plastic films combined in a sandwich can also vary.
• FIG. 3 a second embodiment of an offset printing unit according to the present invention is shown in a schematic representation.
• the offset printing unit has an impression cylinder 15, a blanket cylinder 12, a forme cylinder 10 and, assigned to the forme cylinder 10, an inking unit 21 and a dampening unit 22.
• the impression cylinder 15 is used to guide a printing material sheet.
• the impression cylinder 15 is equipped with a gripper system (not shown in FIG. 3 for reasons of clarity of the illustration).
• the substrate sheet is guided on a smooth surface.
• the printing blanket cylinder 12 is located opposite the impression cylinder 15.
• the printing blanket cylinder 12 is covered with a printing blanket 13, which is stable in length and flexible in the transverse direction to its surface area and can be compressible to a small extent.
• the blanket 13 is firmly clamped on the blanket cylinder 12.
• the form cylinder 10 is assigned to the blanket cylinder 12.
• a printing plate or printing plate 11 which usually consists of a thin metal plate in offset printing, is clamped on the forme cylinder 10.
• the printing form 11 is supplied with ink by the inking unit 21, the printing surfaces being supplied beforehand by means of water supply through the dampening unit 22 have been differentiated from the non-printing areas.
• FIG. 4 shows a printing zone according to FIG. 3 between the blanket cylinder 12 and the impression cylinder 15, the indicated diameter ratios between the impression cylinder 15 indicated in FIGS. 3 and 4 below and the impression cylinder 12 indicated above in FIGS. 3 and 4 not the Must correspond to reality.
• FIG. 4 shows a printing material on the impression cylinder 15, which in this second exemplary embodiment is designed as corrugated cardboard 14 '.
• the corrugated cardboard 14 ' has a lower cover layer 141' indicated at the bottom in FIGS. 4 and 5 and an upper cover layer 143 'indicated at the top in FIGS. 4 and 5; the two cover layers 141 ', 143' are connected to one another by a corrugated connection layer 142 ', the lower cover layer 141' being glued to the lower edges of the connection layer 142 'and the upper cover layer 143' being glued to the upper edges of the connection layer 142 ' ;
• This connection creates a very stable substrate, which is often used in the packaging sector.
• the printing blanket cylinder 12 is in turn arranged, on which a printing blanket 13 is indicated on the outside.
• the blanket 13 is shown in FIG. 4 as a homogeneous layer, normally blankets as so-called blankets executed and composed of a non-stretchable base layer and a flexible cover layer.
• a substructure material 100 ′ designed as a printing blanket underlay is further arranged directly on the surface of the printing blanket cylinder 12 below the printing blanket 13.
• This substructure material 100 ' is composed of an elastic base layer 17' and a flexible cover layer 16 'arranged on the base layer 17'. While the stretch-resistant base layer 17 'can be a solid plastic film, the flexible cover layer 16' is preferably a layer of foam of certain qualifications.
• the elastic base layer 17 ' allows the substructure material 100' designed as a printing blanket base, the foam (-> flexible cover layer 16 ') being firmly connected to the plastic film (-> elastic base layer 17'), together with the printing blanket 13 tension the blanket cylinder 12.
• the surface of the blanket cylinder 12 is therefore the same as a conventional blanket cylinder with blanket.
• FIG. 5 shows a detail from FIG. 4 in detail.
• the corrugated cardboard 14 ' can again be seen as printing material.
• the printing blanket 13, which has adapted to the deformed surface of the corrugated cardboard 14 ', is arranged above the corrugated cardboard 14'.
• the differences in height with respect to the surface of the printing blanket cylinder 12, which is partially shown on the underside, are compensated for by the flexible cover layer 16 'of the substructure material 100' designed as a printing blanket underlay.
• the Foam is compressed at the points where the top of the corrugated cardboard 14 'is solid, and the blanket 13 can deflect by being deformed accordingly by bending.
• the printing blanket 13 can follow the deformable surface of the corrugated cardboard 14', the flexible cover layer 16 'taking on this compensating function through its formation as a foam layer.
• the present printing device can be used for the most varied qualities of substrates with uneven surfaces by appropriate adjustment of the printing supply, that is to say the determination of the effective distance between blanket cylinder 12 and impression cylinder 15 or by selection of different foam layers for the base material 100 ′ designed as a blanket underlay.
• relatively easily compressible printing materials such as the corrugated cardboard 14 'shown in the second exemplary embodiment in FIGS. 3 to 5
• relatively hard printing materials such as embossed solid cardboard.
• the thickness of the substructure material 100 'designed as a printing blanket underlay is important. Basically, substructure materials 100 'with a thickness of about 0.5 millimeters to about 3.00 or 4.00 millimeters are suitable for the application mentioned. For the application technology of known printing materials, the selection of base materials 100 'with a thickness of approximately 1.00 millimeters to approximately 2.00 millimeters is preferred.
• the foam is reversibly compressible over many cycles of action To prefer foam. In this case, an open-cell foam is preferably used. This is easier to compress than the known closed-cell layers in printing blankets.
• the special printing blanket 13, 70 can preferably be produced from a conventional printing blanket in that the base layer 17 'is also built into the printing blanket.
• the open-cell foam mentioned is preferably introduced onto an existing stretch-resistant textile layer or a different type of base or base layer of the printing blanket.
• the active layer 13 'of the printing blanket can in turn be applied to the foam. This has the advantage that, with the tensile strength of the special printing blanket 70 remaining the same, a greatly improved flexibility in the transverse direction to the area extension of the special printing blanket 70, in particular in its active layer 13 ′, is achieved in comparison with a conventional printing blanket. (Fig. 4)
• a simple improvement in the mode of operation of the special printing blanket 70 can be achieved in that only part of a conventional printing blanket is laminated onto the substructure material 100 'or the underlayer. For this purpose, part of the mostly textile lower layers that produce the tensile strength of the printing blanket can be separated from a conventional printing blanket. The dimensional stability of the printing blanket in the working plane is thus sufficiently ensured. A printing blanket which is weakened in this way in its stiffness transversely to the active plane can now be applied as active layer 13 'to the base material 100' or the cover layer 16 'of the lower layer.
• a special printing blanket 70 of the type described above can thus be produced in a simple manner and can be clamped onto a printing blanket cylinder 12 in an equally simple manner.
• reinforcement can be provided in the area of the tensioning edges of the printing blanket 70 in such a way that both the clamping and the use of the printing blanket 70 during the printing process are improved.
• the blanket 70 is flattened at its ends after the joining of the active layer 13 ′ and the lower layer to a thickness dimension suitable for the tensioning devices present in a blanket cylinder 12.
• the clamping ends produced in this way can also be provided with a reinforcement in the form of a metal rail or other suitable reinforcements.
• the leading edges of the tensioning ends of the printing blanket 70 can be provided with a seal.
• a printing blanket 70 which contains a voluminous working area made of a flexible active layer 13 'with a suitably compressible lower layer. Furthermore, the printing blanket 70 can be tensioned on a printing blanket cylinder 12 like a conventional printing blanket of known thickness.
• the structure of the voluminous printing blanket 70 described can be varied over a wide range, the starting materials (conventional or other printing blanket, underlayer or built-in layer made of open-cell foam) and their structure forming the general conditions.
• the connection between the active layer 13 'and the expandable base layer 17' or the installation of the foam in a printing blanket between the active layer 13 'and an additional, if necessary conventional, base layer for producing the printing blanket 70 is carried out using known conventional means.

Landscapes

• Printing Plates And Materials Therefor (AREA)
• Printing Methods (AREA)

Applications Claiming Priority (7)

Publications (2)

Family

ID=27213817

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (7)

Family Cites Families (4)

• 2000
  • 2000-10-12 WO PCT/EP2000/010052 patent/WO2001026907A1/de active IP Right Grant
  • 2000-10-12 CN CN00814191.6A patent/CN1378507A/zh active Pending
  • 2000-10-12 JP JP2001529944A patent/JP3940602B2/ja not_active Expired - Fee Related
  • 2000-10-12 AU AU11372/01A patent/AU1137201A/en not_active Abandoned
  • 2000-10-12 CZ CZ20021301A patent/CZ20021301A3/cs unknown
  • 2000-10-12 AT AT00972746T patent/ATE285904T1/de not_active IP Right Cessation
  • 2000-10-12 EP EP00972746A patent/EP1230095B1/de not_active Expired - Lifetime

Also Published As

Similar Documents

Legal Events