EP0425829B1 - Farbbewege-/Reibwalze - Google Patents

Farbbewege-/Reibwalze Download PDF

Info

Publication number
EP0425829B1
EP0425829B1 EP90118935A EP90118935A EP0425829B1 EP 0425829 B1 EP0425829 B1 EP 0425829B1 EP 90118935 A EP90118935 A EP 90118935A EP 90118935 A EP90118935 A EP 90118935A EP 0425829 B1 EP0425829 B1 EP 0425829B1
Authority
EP
European Patent Office
Prior art keywords
roller
inking unit
covering
printing machine
offset 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.)
Expired - Lifetime
Application number
EP90118935A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0425829A3 (en
EP0425829A2 (de
Inventor
Roland Thomas Palmatier
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0425829A2 publication Critical patent/EP0425829A2/de
Publication of EP0425829A3 publication Critical patent/EP0425829A3/de
Application granted granted Critical
Publication of EP0425829B1 publication Critical patent/EP0425829B1/de
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
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/26—Construction of inking rollers

Definitions

  • the present invention relates to an inking unit for a printing press, in particular an improved inking roller in an inking unit for a printing press.
  • ink is transferred from an ink fountain from a duct roller to ink drawing rollers.
  • the ink drawing rollers transfer the ink to inking rollers, from which they are transferred to a printing plate or the like. is transmitted on a plate cylinder.
  • the ink is transferred from the printing plate to a blanket cylinder and from there to the material to be printed.
  • ink As ink is transferred from one roller to the other, ink tends to accumulate at the ends of at least some rollers outside the printing area.
  • the ink at the end of a roller is either thrown off the roller and wasted, and / or causes beads to develop on the blanket cylinder and / or the printing material.
  • the printing material usually a paper web, can stick and tear on such ink balls on the blanket cylinder.
  • a rotary offset printing unit which comprises at least one distribution cylinder with a profiled lateral surface.
  • An outer surface made of metal is provided with spirally running grooves which have approximately the width of the adjacent non-recessed surfaces.
  • the grooves on the distribution cylinder have a right slope on one half and a left slope on the other half.
  • a permanent profiling of a certain depth is predefined in the distribution roller, it can only be adapted to different operating conditions by replacing the one in the inking unit recorded friction rollers take place according to this construction. This necessitates an exchange of the distribution rollers, which takes time and can be undesirable, especially in the case of rotary printing presses with multiple inking units.
  • the object of the invention is to avoid an accumulation of ink at the ends of the rollers, depending on the pressure prevailing in the nip.
  • the present invention accomplishes the transfer of ink from a first to a second ink roller in a manner that avoids the accumulation of ink at the ends of the rollers.
  • the rollers form a gap between them, from which ink is transferred from the first roller to the second.
  • One of these rollers includes a means for moving a small amount of ink from the opposite ends to the center of a roller while both rollers are rotating.
  • the means for moving the ink consists of a lateral surface part of the roller, in which there are pockets due to the liquid pressure in the roller gap to form. The pockets move the ink away from the opposite ends of one roller as the first and second rollers rotate.
  • the present invention is primarily an inking roller made e.g. made of base rubber or rubber-like material.
  • the roller has two spiral grooves made of rubber or rubber-like material with a lower indentation hardness than the base rubber.
  • the softer rubber spiral grooves move a small amount of ink from the opposite ends to the central part of the inking roller.
  • the ink remains in circulation outside of the printing area and the likelihood of the formation of ink spheres at the ends of the roller is reduced.
  • the soft rubber spiral grooves at the nip deform into pockets which move ink from the opposite end parts to the central part of the inking roller, so that hardly any color can accumulate on the end parts.
  • a printing press 10 incorporating the present invention is shown in FIG. 1.
  • the printing press 10 comprises an ink fountain 12 and an ink fountain roller 16.
  • a duct roller 14 receives ink from the ink fountain roller 16 and transfers it to ink drawing rollers 18, which transfer the ink to an intermediate roller 20.
  • the intermediate roller 20 transfers the ink to an inking roller 22 and to inking rollers 24.
  • the inking roller 22 transfers the ink to one of a plurality of intermediate rollers 26 which transfer ink to an inking roller 28.
  • the inking rollers 24 and 28 transfer the ink to a printing plate or the like. on a plate cylinder 30.
  • the printing image is on the printing plate, which is placed on a blanket cylinder 32 and from there on the printing material 34, e.g. a paper web is transmitted.
  • Any roller can be constructed in the inking unit according to this invention. However, in the present embodiment it is roller 22 which is constructed in accordance with the invention.
  • the ink rubbing roller 22 thus improved is shown in FIGS. 2 and 3.
  • the roller 22 consists of a part of base rubber 34 with a predetermined indentation hardness and of spiral rubber inserts 36 and 38 with a lower indentation hardness than that of the base rubber part 34.
  • the diameter of the parts 34 and the spiral inserts 36 and 38 is the same.
  • the spiral insert 36 extends around the outer surface and axially from the end part 40 to the central part 42 of the roller 22.
  • the spiral insert 38 extends around the outer surface and axially from the end part 44 to the central part 42 of the roller 22.
  • the spiral Inserts 36 and 38 may be approximately in the central part 42 the roller 22 meet and form an acute angle A between them.
  • the spiral inserts do not need to meet in the middle and can only cover some end areas of the roller.
  • an ink layer 45 is in the gap between the two rollers when the inking roller 22 is on the roller 26 (FIG. 3). Due to the fluid pressure between the rollers 22 and 26 in the nip 46, the spiral inserts 36 and 38 on the nip 46 deform to a greater extent than the hard rubber part 34. Thus, e.g. Pockets 48 and 50 in spiral inserts 36, 38 which collect color.
  • Pockets 48 and 50 form an axial distance along gap 46 at a time when roller 22 rotates in the direction of arrow 52 (FIG. 2) and roller 26 rotates in the direction of arrow 54. Pockets also form at the gap between the rollers 22 and 20. The pockets 48 and 50 form axially closer to the central portion 42 at a different time during the rotation of the rollers 22 and 26. The pockets 48 (Fig. 3) appear to move in the direction of arrow 56 and the pockets 50 in the direction of arrow 58 as the rollers 22 and 26 rotate. Spiral inserts 36 and 38 slope from end portions 40 and 44 to central portion 42 of roller 22, respectively, so that pockets 48 and 50 move axially from end portions 40 and 44 to central portion 42 when the Roller 22 rotates in the direction of arrow 52.
  • the indentation hardness of the rubber part 34 and that of the spiral insert 36, 38 can be different.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP90118935A 1989-11-02 1990-10-04 Farbbewege-/Reibwalze Expired - Lifetime EP0425829B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/430,878 US5016530A (en) 1989-11-02 1989-11-02 Ink mover distributor roll
US430878 1989-11-02

Publications (3)

Publication Number Publication Date
EP0425829A2 EP0425829A2 (de) 1991-05-08
EP0425829A3 EP0425829A3 (en) 1991-07-03
EP0425829B1 true EP0425829B1 (de) 1994-12-28

Family

ID=23709456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90118935A Expired - Lifetime EP0425829B1 (de) 1989-11-02 1990-10-04 Farbbewege-/Reibwalze

Country Status (6)

Country Link
US (1) US5016530A (cs)
EP (1) EP0425829B1 (cs)
JP (2) JPH03159745A (cs)
AT (1) ATE116207T1 (cs)
CA (1) CA2028033C (cs)
DE (1) DE4028417A1 (cs)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5222434A (en) * 1990-07-26 1993-06-29 Petco, Inc. Soft rollers for ink and water feeding rollers used in off-set printing presses
US5329850A (en) * 1992-07-10 1994-07-19 Eduardo Duarte Metering roller for a lithographic printing press
DE19529809C2 (de) * 1995-08-14 2000-08-03 Westland Gummiwerke Gmbh & Co Walze für Farbverarbeitung und deren Verwendung
US5813961A (en) * 1995-09-01 1998-09-29 Diamond Holding Corporation Inking, water form and metering roller
DE19847108C2 (de) * 1998-10-13 2002-10-24 Windmoeller & Hoelscher Rasterwalze
DE10039279A1 (de) * 1999-09-09 2001-03-15 Heidelberger Druckmasch Ag Walze für Druckmaschinen
DE10325418A1 (de) * 2003-06-05 2004-12-23 Man Roland Druckmaschinen Ag Rotationsdruckmaschine
DE20316112U1 (de) * 2003-10-21 2005-03-10 Maschinenfabrik Wifag Farbwalze mit strukturierter Oberfläche
JP2005313375A (ja) * 2004-04-27 2005-11-10 Kenichi Okamoto オフセット印刷機構
NL1028791C2 (nl) * 2005-04-18 2006-10-20 Wilhelmus Reijnen Geprofileerde inktwals.
TWI461306B (zh) 2006-07-19 2014-11-21 Boettcher Gmbh & Co Felix 隨機雷射處理之薄膜滾子
US8342092B2 (en) * 2008-11-21 2013-01-01 Goss International Americas, Inc. Porous roll with axial zones and method of proving printing liquid to a cylinder in a printing press
US8306466B2 (en) * 2009-12-07 2012-11-06 Lexmark International, Inc. Lubricant retention features on heater body of a fuser
USD674611S1 (en) * 2010-12-23 2013-01-22 Ryan Gullatt Lint remover with spiral motif

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA729860A (en) * 1966-03-15 A. Simi Edward Snow blower
US1568401A (en) * 1923-07-18 1926-01-05 Charles R Griffith Roll for carrying fabric conveyer belts of paper-making machines
US1756308A (en) * 1928-07-30 1930-04-29 Hoe & Co R Inking mechanism for printing presses
GB345619A (en) * 1929-12-19 1931-03-19 Hoe & Co R Improvements in inking mechanism for printing presses
US2369814A (en) * 1940-11-14 1945-02-20 Goss Printing Press Co Ltd Rotary printing press
US3462053A (en) * 1967-11-08 1969-08-19 Dow Chemical Co Method and apparatus for processing film having beaded portions
US3613575A (en) * 1968-05-27 1971-10-19 Kantor Press Kontrols Inc Oscillator roller for printing presses
US3877368A (en) * 1972-12-08 1975-04-15 Itek Corp Ink transfer roller for printing presses
DE2438169C3 (de) * 1974-08-08 1978-04-20 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Rotations-Offsetdruckwerk, bei dem eine Übertragungswalze des Farbwerkes mit einer profilierten Mantelfläche versehen ist
US4065841A (en) * 1976-08-23 1978-01-03 Max Gysin Printing roller
US4750422A (en) * 1986-01-21 1988-06-14 Max Gysin Water form roller and method of making the same

Also Published As

Publication number Publication date
DE4028417A1 (de) 1991-05-08
JPH08457U (ja) 1996-03-08
CA2028033A1 (en) 1991-05-03
EP0425829A3 (en) 1991-07-03
JP2567618Y2 (ja) 1998-04-02
ATE116207T1 (de) 1995-01-15
US5016530A (en) 1991-05-21
CA2028033C (en) 1994-09-20
JPH03159745A (ja) 1991-07-09
EP0425829A2 (de) 1991-05-08
DE4028417C2 (cs) 1993-05-13

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