EP0425982A2 - Cylindre porte-plaque - Google Patents

Cylindre porte-plaque Download PDF

Info

Publication number
EP0425982A2
EP0425982A2 EP90120305A EP90120305A EP0425982A2 EP 0425982 A2 EP0425982 A2 EP 0425982A2 EP 90120305 A EP90120305 A EP 90120305A EP 90120305 A EP90120305 A EP 90120305A EP 0425982 A2 EP0425982 A2 EP 0425982A2
Authority
EP
European Patent Office
Prior art keywords
plate cylinder
plate
printing plate
cylinder
printing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90120305A
Other languages
German (de)
English (en)
Other versions
EP0425982B1 (fr
EP0425982A3 (en
Inventor
Claus Simeth
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.)
Manroland AG
Original Assignee
MAN Miller Druckmaschinen GmbH
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Miller Druckmaschinen GmbH, MAN Roland Druckmaschinen AG filed Critical MAN Miller Druckmaschinen GmbH
Publication of EP0425982A2 publication Critical patent/EP0425982A2/fr
Publication of EP0425982A3 publication Critical patent/EP0425982A3/de
Application granted granted Critical
Publication of EP0425982B1 publication Critical patent/EP0425982B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • 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
    • 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
    • Y10S101/00—Printing
    • Y10S101/36—Means for registering or alignment of print plates on print press structure

Definitions

  • the invention relates to a plate cylinder of a printing press with a printing plate stretched over its circumference and with a film arrangement provided between the plate cylinder and the printing plate.
  • a pad is conventionally arranged, which consists for example of oil paper.
  • this known arrangement is still distinguished by a very high frictional force between the actual plate cylinder and the printing plate, which is particularly due to the fact that the rough surface of the plate cylinder rests on the relatively rough surface of the oil paper and also the rough underside of the printing plate the roughness of the upper side of the underlay which is provided with the same roughness as the underside.
  • a pressure plate is tightened via the tensioning strip, a force arrives at the pressure end at the start of the pressure of the pressure plate, which is only approximately one fifth of the force at the pressure end of the pressure plate. The remaining force is friction losses.
  • a force is applied to the tension bar at the start of the pressure, which is approximately equal to 0.6 times the force at the end of the print.
  • the rest i.e. around 40% of the force, is used up by the friction.
  • the invention avoids these disadvantages. It is based on the object of proposing a plate cylinder with the features mentioned at the outset, which is distinguished by a noticeably reduced coefficient of friction between the plate cylinder and the printing plate.
  • the invention is characterized in that the foil arrangement has at least two foils, one surface of which has a smaller coefficient of sliding friction than the other surface, the two foils having their surfaces with good sliding properties being superimposed on one another.
  • the lower film with its higher coefficient of sliding friction thus lies on the top of the plate cylinder and the upper film lies with its side with the higher coefficient of sliding friction on the underside of the printing plate.
  • Both films lie on top of each other with their well sliding surfaces and allow the printing plate to be moved relative to the plate cylinder with low sliding friction, i.e. smooth sliding.
  • the foil arrangement can be supplemented by additional foils, for example by prior art underlay sheets between the top of the described foils and the underside of the printing plate and / or between the plate cylinder and the bottom of the foils described.
  • additional foils for example by prior art underlay sheets between the top of the described foils and the underside of the printing plate and / or between the plate cylinder and the bottom of the foils described.
  • the circumference of the plate cylinder can be increased, for example. All of this is encompassed by the invention.
  • foils when we speak of foils above and below, this includes flat, flexible structures in the broadest sense, for example made of plastic, textile, paper, etc. It is only essential that the foils have different sliding friction coefficients on their surfaces Meaning of the solution of the invention task.
  • such films are used that are plastic-coated on one side, for example with Teflon.
  • plastics are characterized by low coefficients of friction, i.e. due to good sliding properties.
  • the other side of the film remains uncoated and has the sliding friction coefficient of its base material, which is in any case higher than the sliding friction coefficient of the coated side, in particular because this uncoated surface maintains its normal roughness.
  • a plate cylinder is arranged, the surface of which is designated position 2. It has a defined roughness.
  • a lower film 5 and an upper film 6 are arranged between the plate cylinder 1 and the printing plate 3.
  • the underside 7 of the lower film 5 has a greater roughness than hers Top side 8.
  • the top side 9 of the top film 6 has a greater roughness than the bottom side 10 of the top film 6.
  • the mutually facing and superimposed sides 8, 10 of the films 5, 6 slide well, while the opposite sides 7 , 9 are noticeably rougher.
  • the surfaces 2, 4 also have a noticeable roughness.
  • the layers lie closely one above the other and the pressure plate 1 with the upper film 6 lying against it can easily shift relative to the plate cylinder 1 with the lower film 5 lying against it.
  • the rougher sides 7 and / or 9 are self-adhesive, so that at least one of the foils 5, 6 sticks to the plate cylinder or the printing plate.
  • the well sliding surfaces 8, 10 are preferably achieved by a corresponding plastic coating of the foils 5, 6.
  • Additional foils or sheets can optionally be arranged between the surfaces 2, 7 and / or 4, 9 if this should be necessary. It is therefore also possible to additionally arrange films with the properties according to the invention or also conventional films.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Pens And Brushes (AREA)
  • Braking Arrangements (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
EP90120305A 1989-11-02 1990-10-23 Cylindre porte-plaque Expired - Lifetime EP0425982B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3936448A DE3936448C1 (fr) 1989-11-02 1989-11-02
DE3936448 1989-11-02

Publications (3)

Publication Number Publication Date
EP0425982A2 true EP0425982A2 (fr) 1991-05-08
EP0425982A3 EP0425982A3 (en) 1992-03-18
EP0425982B1 EP0425982B1 (fr) 1994-08-31

Family

ID=6392706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120305A Expired - Lifetime EP0425982B1 (fr) 1989-11-02 1990-10-23 Cylindre porte-plaque

Country Status (6)

Country Link
US (1) US5154120A (fr)
EP (1) EP0425982B1 (fr)
JP (1) JPH0790636B2 (fr)
AT (1) ATE110642T1 (fr)
DE (2) DE3936448C1 (fr)
ES (1) ES2059952T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622248A1 (fr) * 1993-04-30 1994-11-02 MAN Roland Druckmaschinen AG Cylindre porteur de plaque pour machine d'imprimerie
EP1136282A2 (fr) * 2000-03-03 2001-09-26 Fuji Photo Film Co., Ltd. Film intermédiaire, élément périphérique, et structure d'emballage pour plaques d'impression lithographique

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4315311C2 (de) * 1993-04-30 1996-11-28 Roland Man Druckmasch Plattenzylinder für eine Druckmaschine
DE19526703C2 (de) * 1995-07-24 1999-08-19 Saechsisches Inst Fuer Die Dru Verfahren zur Herstellung von Unterlagen für Druckplatten auf Plattenzylindern
JPH10754A (ja) * 1996-06-17 1998-01-06 Shinohara Tekkosho:Kk 枚葉式印刷機の版胴
JP2005035003A (ja) * 2003-07-15 2005-02-10 Konica Minolta Medical & Graphic Inc 版下シート材料、版掛け方法及び印刷方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705072A (en) * 1970-05-04 1972-12-05 Minnesota Mining & Mfg Underpacking for printing with dimensionally stable plastic core having elastomeric and pressure sensitive outer layers
EP0246012A2 (fr) * 1986-05-01 1987-11-19 Minnesota Mining And Manufacturing Company Procédé et habillage pour le montage de plaques d'impression sur une presse rotative

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821026A (en) * 1955-06-24 1958-01-28 Moggridge George Arthur Printing plate location and affixing means
US4178402A (en) * 1972-04-13 1979-12-11 Klapproth Friedrich Cylinder blanket for offset printing presses

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705072A (en) * 1970-05-04 1972-12-05 Minnesota Mining & Mfg Underpacking for printing with dimensionally stable plastic core having elastomeric and pressure sensitive outer layers
EP0246012A2 (fr) * 1986-05-01 1987-11-19 Minnesota Mining And Manufacturing Company Procédé et habillage pour le montage de plaques d'impression sur une presse rotative

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622248A1 (fr) * 1993-04-30 1994-11-02 MAN Roland Druckmaschinen AG Cylindre porteur de plaque pour machine d'imprimerie
EP1136282A2 (fr) * 2000-03-03 2001-09-26 Fuji Photo Film Co., Ltd. Film intermédiaire, élément périphérique, et structure d'emballage pour plaques d'impression lithographique
EP1136282A3 (fr) * 2000-03-03 2001-11-28 Fuji Photo Film Co., Ltd. Film intermédiaire, élément périphérique, et structure d'emballage pour plaques d'impression lithographique
US6551696B2 (en) 2000-03-03 2003-04-22 Fuji Photo Film Co., Ltd. Interleaf sheet for planographic printing plates, abutting member for planographic printing plates, and packaging structure for planographic printing plates

Also Published As

Publication number Publication date
DE59006969D1 (de) 1994-10-06
ES2059952T3 (es) 1994-11-16
US5154120A (en) 1992-10-13
JPH0790636B2 (ja) 1995-10-04
JPH0485039A (ja) 1992-03-18
EP0425982B1 (fr) 1994-08-31
EP0425982A3 (en) 1992-03-18
DE3936448C1 (fr) 1991-04-18
ATE110642T1 (de) 1994-09-15

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