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EP0452184B1 - Blanket covered cylinder - Google Patents

Blanket covered cylinder Download PDF

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Publication number
EP0452184B1
EP0452184B1 EP91400843A EP91400843A EP0452184B1 EP 0452184 B1 EP0452184 B1 EP 0452184B1 EP 91400843 A EP91400843 A EP 91400843A EP 91400843 A EP91400843 A EP 91400843A EP 0452184 B1 EP0452184 B1 EP 0452184B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
layer
thickness
blanket
lying
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.)
Expired - Lifetime
Application number
EP91400843A
Other languages
German (de)
French (fr)
Other versions
EP0452184A1 (en
Inventor
Michel Bresson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MacDermid Graphics Solutions Europe SAS
Original Assignee
Rollin SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Rollin SA filed Critical Rollin SA
Publication of EP0452184A1 publication Critical patent/EP0452184A1/en
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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
    • B41N2210/02—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/909—Resilient layer, e.g. printer's blanket

Definitions

  • the present invention essentially relates to a cylinder coated with a printing blanket and which can be used in printing machines of various types.
  • Document DE-A-3 027 549 describes a printing blanket which is formed of a laminate comprising a plurality of layers including base layers of fabric and which is capable of being fixed to a cylinder by its opposite edges as explained above.
  • a cylinder with printing blanket as defined in the preamble of claim 1 is described, but this blanket is light and disposable once used and therefore does not consist of of a multiplicity of layers continuously surrounding the cylinder and allowing it to rotate at high speed without generating vibrations.
  • the object of the present invention is to propose a cylinder coated with a blanket achieving this aim.
  • the subject of the invention is a cylinder coated with a printing blanket which is held on the cylinder by completely and continuously surrounding this cylinder in the manner of a sleeve and which comprises a base layer adhered to the external surface of the cylinder, characterized in that said uninterrupted base layer is made of cellular rubber, has a modulus of elasticity in compression of between approximately 0.1 and 100 Megapascals (MPa), and is associated, on the side of its surface opposite to that adhered to the cylinder, to other layers without interruption excluding fabrics and comprising at least one layer of hard elastomer which is reinforced by fibers and which is associated with a lithographic or printing layer.
  • MPa Megapascals
  • the cellular rubber base layer has a thickness of between approximately 0.1 and 8 mm and is made integral with the external surface of the cylinder by a layer of adhesive of thickness between about 0.01 and 0.2 mm, and the aforementioned hard elastomer layer has a thickness of between about 0.05 and 0.5 mm.
  • the thickness of the base layer is approximately 2.5 mm and that of the hard elastomer layer is approximately 0.25 mm.
  • the modulus of elasticity in compression of the layer of cellular rubber is equal to approximately 9 megapascals.
  • the percentage by volume and of gas enclosed in the layer of cellular rubber, preferably in closed cells is between approximately 10 and 80%.
  • the aforementioned percentage of gas volume may advantageously be between 12 and 15%.
  • the thickness of the lithographic layer is equal to or less than 0.25 mm, so as not to affect the advantages provided by the specific arrangement of the layers of the sleeve or blanket and in particular by the combination of the cellular rubber base layer and the hard elastomer layer.
  • a blanket cylinder 1 which is full, but which could also be hollow, this cylinder being covered with a blanket 2 which is in the form of a sleeve completely and continuously surrounding said cylinder.
  • the blanket or sleeve 2 may be fitted by any suitable method onto the cylinder 1 which may have a diameter of between 80 and 800 mm.
  • the sleeve 2 comprises a base or lower layer 4 of cellular rubber adhered to the external surface 1a of the cylinder 1 by a layer of adhesive 3, the thickness of which may be between approximately 0.01 and 0.2 mm.
  • the layer 4 of cellular rubber has a thickness of between 0.1 and 8 mm, preferably equal to 2.5 mm, and a modulus of elasticity preferably of between approximately 0.1 and 100 MPa, preferably equal to 9 Mpa.
  • This layer 4 is naturally compressible and contains a certain volume of gas enclosed in open or closed cells. The percentage of the volume of gas enclosed in the cells can be between approximately 10 and 80%, and is preferably between 12 and 15%. It will be observed that layer 4 can optionally be reinforced with fibers or the like.
  • this layer 4 is adhered a layer 5 of hard elastomer and which can optionally be reinforced with fibers.
  • the thickness of this hard elastomer layer 5 can be between 0.05 and 0.5 mm.
  • the blanket or sleeve 2 has an outer lithographic or printing layer 6 which may have a thickness of between 0.05 and 0.6 mm, and is preferably equal to or less than 0.25 mm.
  • This lithographic layer 6 is made of a suitable elastomeric material, as known per se.
  • All the above layers of the printing sleeve or blanket 2 are adhered to each other and to the external surface 1a of the cylinder 1 which, as can be understood by referring again to FIG. 1, forms with the sleeve 2 a assembly perfectly symmetrical to rotation and therefore generating no vibration and allowing a printing machine equipped with such cylinders to operate at high speed.
  • the specific arrangement of the layers of the sleeve or blanket 2 according to this invention, and in particular the sandwich formed by the two layers 4 and 5, gives said sleeve an ideal behavior in the nip zone between two cylinders, with to know in particular an ideal compressibility and an almost total absence of shearing on the surface, that is to say of lateral displacement of the material of the sleeve, from where a perfect behavior of the rolls during rolling during the printing process.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)
  • Rotary Presses (AREA)
  • Materials For Medical Uses (AREA)
  • Coloring (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The present invention relates to a cylinder covered with a printing blanket. According to the invention the layered structure of the blanket is such that the blanket is held onto the cylinder while fully surrounding this cylinder without any gap in the manner of a sleeve. This cylinder together with the printing sleeve is applicable in any type of offset printing machine.

Description

La présente invention a essentiellement pour objet un cylindre revêtu d'un blanchet d'impression et pouvant être utilisé dans des machines à imprimer de types divers.The present invention essentially relates to a cylinder coated with a printing blanket and which can be used in printing machines of various types.

Il est connu depuis longtemps d'utiliser dans les machines d'impression offset des cylindres revêtus d'un blanchet permettant l'impression d'une bande de papier pincée et entraînée entre deux cylindres.It has long been known to use in offset printing machines cylinders coated with a blanket allowing the printing of a strip of paper pinched and entrained between two cylinders.

Jusqu'à présent, les blanchets étaient fixés sur les cylindres par leurs extrémités, lesquelles extrémités étaient rentrées et verrouillées dans le cylindre, ce qui procurait un certain nombre d'inconvénients.Until now, the blankets were fixed on the cylinders by their ends, which ends were tucked in and locked in the cylinder, which gave a certain number of drawbacks.

En effet, les extrémités en vis-à-vis du blanchet laissaient nécessairement un certain espace entre elles, de sorte que la bande de papier présentait des zones non imprimées.Indeed, the ends facing the blanket necessarily left a certain space between them, so that the paper strip had unprinted areas.

En outre, ce mode de fixation des blanchets conférait à l'assemblage cylindre-blanchet une dissymétrie qui, comme on le comprend, engendrait des vibrations à la rotation du cylindre. Dès lors, la vitesse et le rendement des machines à imprimer devaient nécessairement être limitées.In addition, this method of fixing the blankets gave the cylinder-blanket assembly an asymmetry which, as it is understood, generated vibrations when the cylinder rotated. Therefore, the speed and efficiency of the printing machines had to be limited.

Dans le document DE-A-3 027 549, il est décrit un blanchet d'impression qui est formé d'un stratifié comprenant une pluralité de couches dont des couches de base en tissu et qui est apte à être fixé sur un cylindre par ses bords en vis-à-vis comme expliqué ci-dessus.Document DE-A-3 027 549 describes a printing blanket which is formed of a laminate comprising a plurality of layers including base layers of fabric and which is capable of being fixed to a cylinder by its opposite edges as explained above.

Par ailleurs, dans le document US-A-3 750 250, est décrit un cylindre avec blanchet d'impression comme défini dans le préambule de la revendication 1, mais ce blanchet est léger et jetable une fois usagé et il ne se compose donc pas d'une multiplicité de couches entourant sans interruption le cylindre et lui permettant de tourner à grande vitesse sans engendrer des vibrations.Furthermore, in document US-A-3,750,250, a cylinder with printing blanket as defined in the preamble of claim 1 is described, but this blanket is light and disposable once used and therefore does not consist of of a multiplicity of layers continuously surrounding the cylinder and allowing it to rotate at high speed without generating vibrations.

La présente invention a pour but de proposer un cylindre revêtu d'un blanchet parvenant à ce but.The object of the present invention is to propose a cylinder coated with a blanket achieving this aim.

A cet effet, l'invention a pour objet un cylindre revêtu d'un blanchet d'impression qui est maintenu sur le cylindre en entourant complètement et sans interruption ce cylindre à la manière d'un manchon et qui comprend une couche de base adhérisée sur la surface externe du cylindre, caractérisé en ce que ladite couche de base sans interruption est en caoutchouc cellulaire, possède un module d'élasticité en compression compris entre environ 0,1 et 100 Mégapascals (MPa), et est associée, du côté de sa surface opposée à celle adhérisée sur le cylindre, à d'autres couches sans interruption excluant les tissus et comprenant au moins une couche d'élastomère dur qui est renforcée par des fibres et qui est associée à une couche lithographique ou d'impression.To this end, the subject of the invention is a cylinder coated with a printing blanket which is held on the cylinder by completely and continuously surrounding this cylinder in the manner of a sleeve and which comprises a base layer adhered to the external surface of the cylinder, characterized in that said uninterrupted base layer is made of cellular rubber, has a modulus of elasticity in compression of between approximately 0.1 and 100 Megapascals (MPa), and is associated, on the side of its surface opposite to that adhered to the cylinder, to other layers without interruption excluding fabrics and comprising at least one layer of hard elastomer which is reinforced by fibers and which is associated with a lithographic or printing layer.

La symétrie à la rotation du cylindre muni de ce blanchet sera parfaite et la machine à imprimer comportant de tels cylindres pourra fonctionner à vitesse rapide sans engendrer de vibrations et sans procurer de défauts d'impression.The symmetry in rotation of the cylinder provided with this blanket will be perfect and the printing machine comprising such cylinders will be able to operate at high speed without generating vibrations and without producing printing defects.

Suivant encore une autre caractéristique de l'invention, la couche de base en caoutchouc cellulaire a une épaisseur comprise entre environ 0,1 et 8 mm et est rendue solidaire de la surface externe du cylindre par une couche d'adhésif d'épaisseur comprise entre environ 0,01 et 0,2 mm, et la couche d'élastomère dur précitée a une épaisseur comprise entre environ 0,05 et 0,5 mm.According to yet another characteristic of the invention, the cellular rubber base layer has a thickness of between approximately 0.1 and 8 mm and is made integral with the external surface of the cylinder by a layer of adhesive of thickness between about 0.01 and 0.2 mm, and the aforementioned hard elastomer layer has a thickness of between about 0.05 and 0.5 mm.

Suivant un mode de réalisation préféré, l'épaisseur de la couche de base est égale à environ 2,5 mm et celle de la couche d'élastomère dur est égale à environ 0,25 mm.According to a preferred embodiment, the thickness of the base layer is approximately 2.5 mm and that of the hard elastomer layer is approximately 0.25 mm.

Selon une réalisation préférée, le module d'élasticité en compression de la couche de caoutchouc cellulaire est égal à environ 9 mégapascals.According to a preferred embodiment, the modulus of elasticity in compression of the layer of cellular rubber is equal to approximately 9 megapascals.

On précisera encore ici que le pourcentage en volume et en gaz enfermé dans la couche de caoutchouc cellulaire, de préférence dans des cellules fermées, est compris entre environ 10 et 80%.It will also be specified here that the percentage by volume and of gas enclosed in the layer of cellular rubber, preferably in closed cells, is between approximately 10 and 80%.

Le pourcentage de volume de gaz précité pourra avantageusement être compris entre 12 et 15%.The aforementioned percentage of gas volume may advantageously be between 12 and 15%.

Suivant encore une autre caractéristique de l'invention, l'épaisseur de la couche lithographique est égale ou inférieure à 0,25 mm, de façon à ne pas affecter les avantages procurés par l'agencement spécifique des couches du manchon ou blanchet et notamment par la combinaison de la couche de base en caoutchouc cellulaire et de la couche d'élastomère dur.According to yet another characteristic of the invention, the thickness of the lithographic layer is equal to or less than 0.25 mm, so as not to affect the advantages provided by the specific arrangement of the layers of the sleeve or blanket and in particular by the combination of the cellular rubber base layer and the hard elastomer layer.

Mais d'autres caractéristiques et avantages de l'invention apparaîtront mieux dans la description détaillée qui suit, et se réfère aux dessins annexés, donnés uniquement à titre d'exemple, et dans lesquels :

  • La figure 1 est une vue schématique et en coupe transversale d'un cylindre revêtu d'un blanchet d'impression, formant manchon conformément aux principes de l'invention, et
  • La figure 2 est une vue agrandie et en coupe de l'ensemble cylindre-blanchet, suivant l'encadré II de la figure 1.
However, other characteristics and advantages of the invention will appear better in the detailed description which follows, and refers to the appended drawings, given solely by way of example, and in which:
  • FIG. 1 is a schematic view in cross section of a cylinder coated with a printing blanket, forming a sleeve in accordance with the principles of the invention, and
  • FIG. 2 is an enlarged view in section of the cylinder-blanket assembly, according to box II of FIG. 1.

En se reportant à cette figure 1, on voit un cylindre 1 porte-blanchet qui est plein, mais qui pourrait également être creux, ce cylindre étant recouvert d'un blanchet 2 qui se présente sous la forme d'un manchon entourant complètement et sans interruption ledit cylindre.Referring to this figure 1, we see a blanket cylinder 1 which is full, but which could also be hollow, this cylinder being covered with a blanket 2 which is in the form of a sleeve completely and continuously surrounding said cylinder.

Le blanchet ou manchon 2 pourra être emmanché par toute méthode appropriée sur le cylindre 1 qui peut présenter un diamètre compris entre 80 et 800 mm.The blanket or sleeve 2 may be fitted by any suitable method onto the cylinder 1 which may have a diameter of between 80 and 800 mm.

On décrira maintenant la structure du manchon ou blanchet d'impression 2 en se reportant plus particulièrement à la figure 2.The structure of the printing sleeve or blanket 2 will now be described with particular reference to FIG. 2.

Le manchon 2 comprend une couche de base ou inférieure 4 en caoutchouc cellulaire adhérisée sur la surface externe 1a du cylindre 1 par une couche d'adhésif 3 dont l'épaisseur peut être comprise entre environ 0,01 et 0,2 mm.The sleeve 2 comprises a base or lower layer 4 of cellular rubber adhered to the external surface 1a of the cylinder 1 by a layer of adhesive 3, the thickness of which may be between approximately 0.01 and 0.2 mm.

La couche 4 en caoutchouc cellulaire possède une épaisseur comprise entre 0,1 et 8 mm, de préférence égale à 2,5 mm, et un module d'élasticité de préférence compris entre environ 0,1 et 100 MPa, de préférence égal à 9 Mpa. Cette couche 4 est naturellement compressible et contient un certain volume de gaz enfermé dans des cellules ouvertes ou fermées. Le pourcentage du volume de gaz enfermé dans les cellules peut être compris entre environ 10 et 80%, et est de préférence compris entre 12 et 15%. On observera que la couche 4 peut être facultativement renforcée par des fibres ou analogues.The layer 4 of cellular rubber has a thickness of between 0.1 and 8 mm, preferably equal to 2.5 mm, and a modulus of elasticity preferably of between approximately 0.1 and 100 MPa, preferably equal to 9 Mpa. This layer 4 is naturally compressible and contains a certain volume of gas enclosed in open or closed cells. The percentage of the volume of gas enclosed in the cells can be between approximately 10 and 80%, and is preferably between 12 and 15%. It will be observed that layer 4 can optionally be reinforced with fibers or the like.

Au-dessus de cette couche 4 est adhérisée une couche 5 en élastomère dur et qui peut être éventuellement renforcée par des fibres. L'épaisseur de cette couche 5 en élastomère dur peut être comprise entre 0,05 et 0,5 mm.Above this layer 4 is adhered a layer 5 of hard elastomer and which can optionally be reinforced with fibers. The thickness of this hard elastomer layer 5 can be between 0.05 and 0.5 mm.

Enfin, le blanchet ou manchon 2 comporte une couche externe lithographique ou d'impression 6 qui peut posséder une épaisseur comprise entre 0,05 et 0,6 mm, et est de préférence égale ou inférieure à 0,25 mm. Cette couche lithographique 6 est en un matériau élastomère approprié, comme connu en soi.Finally, the blanket or sleeve 2 has an outer lithographic or printing layer 6 which may have a thickness of between 0.05 and 0.6 mm, and is preferably equal to or less than 0.25 mm. This lithographic layer 6 is made of a suitable elastomeric material, as known per se.

Toutes les couches ci-dessus du manchon ou blanchet d'impression 2 sont adhérisées entre elles et à la surface externe la du cylindre 1 qui, comme on peut le comprendre en se reportant à nouveau à la figure 1, forme avec le manchon 2 un ensemble parfaitement symétrique à la rotation et n'engendrant par conséquent aucune vibration et permettant à une machine à imprimer équipée de tels cylindres de fonctionner à vitesse rapide.All the above layers of the printing sleeve or blanket 2 are adhered to each other and to the external surface 1a of the cylinder 1 which, as can be understood by referring again to FIG. 1, forms with the sleeve 2 a assembly perfectly symmetrical to rotation and therefore generating no vibration and allowing a printing machine equipped with such cylinders to operate at high speed.

On ajoutera encore ici que l'agencement spécifique des couches du manchon ou blanchet 2 selon cette invention, et en particulier le sandwich constitué par les deux couches 4 et 5, procure audit manchon un comportement idéal dans la zone de pincement entre deux cylindres, à savoir notamment une compressibilité idéale et une absence quasi-totale de cisaillement en surface, c'est-à-dire de déplacement latéral de la matière du manchon, d'où un comportement parfait des cylindres au roulage lors du processus d'impression.It will also be added here that the specific arrangement of the layers of the sleeve or blanket 2 according to this invention, and in particular the sandwich formed by the two layers 4 and 5, gives said sleeve an ideal behavior in the nip zone between two cylinders, with to know in particular an ideal compressibility and an almost total absence of shearing on the surface, that is to say of lateral displacement of the material of the sleeve, from where a perfect behavior of the rolls during rolling during the printing process.

Claims (7)

  1. Cylinder covered with a printing blanket which is held upon the cylinder (1) by completely surrounding this cylinder without any interruption in the manner of a sleeve and which comprises a base layer (4) adhesively bonded onto the external surface (1a) of the cylinder (1), characterized in that the said base layer without any interruption is made from cellular rubber, has a modulus of elasticity in compression lying between about 0.1 and 100 megapascals (MPa) and is associated towards its surface opposite to that adhesively bonded onto the cylinder (1) with other layers without any interruption (5, 6) excluding fabrics and comprising at least one layer of hard elastomer (5) which is reinforced with fibers and which is associated with a lithographic or printing layer (6).
  2. Cylinder according to claim 1, characterized in that the base layer (4) of cellular rubber has a thickness lying between about 0.1 and 8 mm and is made fast to the external surface (1a) of the cylinder (1) by a layer of adhesive (3) with a thickness lying between about 0.01 and 0.2 mm and the aforesaid layer of hard elastomer (5) has a thickness lying between about 0.05 and 0.5 mm.
  3. Cylinder according to claim 2, characterized in that the aforesaid base layer (4) has a thickness equal to about 2.5 mm and the aforesaid layer of hard elastomer (5) has a thickness of about 0.25 mm.
  4. Cylinder according to one of claims 1 to 3, characterized in that the modulus of elasticity in compression of the layer of cellular rubber (4) is equal to about 9 megapascals.
  5. Cylinder according to one of the foregoing claims, characterized in that the volume percentage of the gas enclosed in the layer of cellular rubber (4) preferably in closed cells is lying between about 10 and 80%.
  6. Cylinder according to claim 5, characterized in that the aforesaid gas volume percentage is lying between about 12 and 15%.
  7. Cylinder according to claim 1, characterized in that the thickness of the lithographic layer (6) is equal to or below 0.25 mm.
EP91400843A 1990-04-12 1991-03-28 Blanket covered cylinder Expired - Lifetime EP0452184B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9004749A FR2660895B1 (en) 1990-04-12 1990-04-12 CYLINDER COATED WITH A PRINTING BLANKET.
FR9004749 1990-04-12

Publications (2)

Publication Number Publication Date
EP0452184A1 EP0452184A1 (en) 1991-10-16
EP0452184B1 true EP0452184B1 (en) 1995-10-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400843A Expired - Lifetime EP0452184B1 (en) 1990-04-12 1991-03-28 Blanket covered cylinder

Country Status (12)

Country Link
US (1) US5205213A (en)
EP (1) EP0452184B1 (en)
JP (1) JP3204678B2 (en)
AT (1) ATE129198T1 (en)
AU (1) AU638322B2 (en)
CA (1) CA2040293C (en)
DE (2) DE69113853T2 (en)
DK (1) DK0452184T3 (en)
ES (1) ES2080920T3 (en)
FR (1) FR2660895B1 (en)
NZ (1) NZ237809A (en)
ZA (1) ZA912769B (en)

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US6374734B1 (en) * 1989-10-05 2002-04-23 Heidelberger Druckmaschinen Ag Tubular printing blanket
US5429048A (en) * 1989-10-05 1995-07-04 Gaffney; John M. Offset lithographic printing press
US5553541A (en) * 1989-10-05 1996-09-10 Heidelberg Harris Inc Gapless tubular printing blanket
US5352507A (en) * 1991-04-08 1994-10-04 W. R. Grace & Co.-Conn. Seamless multilayer printing blanket
CA2068629C (en) * 1991-05-14 1996-05-07 James B. Vrotacoe Gapless tubular printing blanket
DE4230431C2 (en) * 1992-09-11 1996-09-26 Roland Man Druckmasch Offset blanket sleeve
US5301610A (en) * 1993-04-30 1994-04-12 E. I. Du Pont De Nemours And Company Method and apparatus for making spiral wound sleeves for printing cylinders and product thereof
US5347927A (en) * 1993-05-04 1994-09-20 W. R. Grace & Co.-Conn. Anisotropic endless printing element and method for making the same
US5522315A (en) * 1994-03-01 1996-06-04 Reeves International Printing blanket with convex compressible layer
DE4432816A1 (en) * 1994-09-15 1996-03-21 Roland Man Druckmasch Printing roller for channelless printing
US5577443A (en) * 1995-02-08 1996-11-26 Luminite Products Corporation Printing sleeve construction
JP2832157B2 (en) † 1995-02-16 1998-12-02 住友ゴム工業株式会社 Printing blanket
IL122608A (en) * 1995-06-16 2000-06-29 Reeves Bros Inc Digital printing blanket carcass
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AU638322B2 (en) 1993-06-24
JP3204678B2 (en) 2001-09-04
JPH04226395A (en) 1992-08-17
FR2660895A1 (en) 1991-10-18
DE452184T1 (en) 1992-08-13
NZ237809A (en) 1993-02-25
AU7434991A (en) 1991-10-17
FR2660895B1 (en) 1994-10-28
CA2040293C (en) 2002-03-12
ATE129198T1 (en) 1995-11-15
US5205213A (en) 1993-04-27
ZA912769B (en) 1992-01-29
DE69113853T2 (en) 1996-04-04
DK0452184T3 (en) 1996-02-05
CA2040293A1 (en) 1991-10-13
EP0452184A1 (en) 1991-10-16
ES2080920T3 (en) 1996-02-16
DE69113853D1 (en) 1995-11-23

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