EP0709191B1 - Verfahren zum Reinigen eines Zylinders einer Druckmaschine - Google Patents

Verfahren zum Reinigen eines Zylinders einer Druckmaschine Download PDF

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Publication number
EP0709191B1
EP0709191B1 EP95114779A EP95114779A EP0709191B1 EP 0709191 B1 EP0709191 B1 EP 0709191B1 EP 95114779 A EP95114779 A EP 95114779A EP 95114779 A EP95114779 A EP 95114779A EP 0709191 B1 EP0709191 B1 EP 0709191B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
washing roller
cleaning
washing
cleaned
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
EP95114779A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0709191A1 (de
Inventor
Klaus Dürrnagel
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 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 Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0709191A1 publication Critical patent/EP0709191A1/de
Application granted granted Critical
Publication of EP0709191B1 publication Critical patent/EP0709191B1/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
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/06—Cleaning arrangements or devices for offset cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/20—Wiping devices
    • B41P2235/22—Rollers

Definitions

  • the invention relates to a method for cleaning a rotating cylinder in a printing press by means of a washing liquid and at least one washing roller which can be moved against the cylinder and rotates counter to it.
  • the invention relates to a method for cleaning the blanket cylinder or the printing cylinder of an offset printing machine.
  • the print image is transferred from the plate cylinder to the printing sheet passing between the blanket cylinder and the printing cylinder through a rubber blanket.
  • the rubber blanket is stretched over the rubber blanket cylinder, which has an axially continuous pit or a continuous channel in which the tensioning means for the rubber blanket are accommodated. Accordingly, the usable printing area does not extend over the entire circumference of the cylinder. Rather, it is limited by the channel, the rubber blanket being stretched over an edge at the start and end of the print in the direction of the axis of the blanket cylinder.
  • the invention has for its object to improve the cleaning method mentioned above for a cylinder of a printing press, so that a complete cleaning of the cylinder can be achieved within reasonable operational interruptions and that deposits on the channel edge at the end of the print are avoided.
  • This object is achieved in a very simple manner in that the washing roller is temporarily driven simultaneously to the cylinder to be cleaned during the cleaning process. That is the knowledge based on the fact that the difficulties mentioned only arise from the channel edge at the end of the print, that the opposite channel edge at the start of the print, however, could always be cleaned properly and had no deposits.
  • the washing rollers Since the washing rollers always have a surface made of soft, elastic, absorbent material and are pressed against the blanket cylinder with a certain amount of prestress, they "dip" - in relation to the cylinder surface - to a certain extent into the channel, which means that in the conventional method with only opposite directions
  • the washing roller also processes the upper part of the channel wall and the edge at the beginning of the print, like the cylinder jacket, for cleaning by the washing rollers.
  • On the opposite channel edge i.e. at the end of the print, however, there is a relief effect in the soft-elastic material of the washing roller when washing rollers are operated in opposite directions, so that this channel edge acts as a wiper for the washing roller and residual dirt is deposited there.
  • the washing rollers are temporarily driven in parallel with the blanket cylinder, the two channel edges are treated equally and the cause of the deposits is eliminated.
  • FIG. 1 A blanket cylinder 1 and a washing roller 2 are shown in section.
  • the opposite edge 7 of the channel 6, lies in the "shadow" of the cleaning effect of the washing roller 2 when the drive is in opposite direction and therefore always has deposits in the conventional cleaning methods.
  • the washing roller 2 is operated according to the invention temporarily at the same time as the blanket cylinder (arrow 8), the edge 7 of the channel 6, which corresponds to the end of the print, is also cleaned properly.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP95114779A 1994-10-27 1995-09-20 Verfahren zum Reinigen eines Zylinders einer Druckmaschine Expired - Lifetime EP0709191B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4438347 1994-10-27
DE4438347A DE4438347C1 (de) 1994-10-27 1994-10-27 Verfahren zum Reinigen eines Zylinders einer Druckmaschine

Publications (2)

Publication Number Publication Date
EP0709191A1 EP0709191A1 (de) 1996-05-01
EP0709191B1 true EP0709191B1 (de) 1997-06-04

Family

ID=6531807

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95114779A Expired - Lifetime EP0709191B1 (de) 1994-10-27 1995-09-20 Verfahren zum Reinigen eines Zylinders einer Druckmaschine

Country Status (5)

Country Link
US (1) US5566617A (ja)
EP (1) EP0709191B1 (ja)
JP (1) JP2889163B2 (ja)
AT (1) ATE153915T1 (ja)
DE (2) DE4438347C1 (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5755158A (en) * 1996-08-28 1998-05-26 Presstek, Inc. Alternately engageable, dual-stage cleaning system for lithographic printing plates
US5870954A (en) * 1998-01-22 1999-02-16 Presstek, Inc. Retractable cleaning system for lithographic printing plates
DE19942409A1 (de) * 1999-09-06 2001-03-08 Heidelberger Druckmasch Ag Abbrand-Aufnehmerrolle in einem Druckplattenbelichter
DE10027021B4 (de) * 2000-05-31 2004-04-08 Koenig & Bauer Ag Vorrichtung zur Reinigung einer Walze oder eines Zylinders
DE10027023B4 (de) * 2000-05-31 2004-07-29 Koenig & Bauer Ag Vorrichtungen zur Reinigung einer Walze oder eines Zylinders
JP4957958B2 (ja) * 2006-12-21 2012-06-20 独立行政法人 国立印刷局 ブランケットシリンダ除塵装置
DE102007023625B4 (de) 2007-05-22 2015-10-29 Koenig & Bauer Ag Vorrichtung zur Reinigung eines Zylinders in einer Druckmaschine
DE102007023626B4 (de) 2007-05-22 2017-04-27 Koenig & Bauer Ag Waschvorrichtung für einen sich drehenden Zylinder in einer Druckmaschine
DE102008006191B3 (de) * 2008-01-26 2009-07-23 Manroland Ag Verfahren zum Reinigen eines Druckmaschinenzylinders
JP5277992B2 (ja) * 2008-01-30 2013-08-28 株式会社リコー ベルト駆動制御装置及び画像形成装置
DE102009006268B4 (de) 2008-02-26 2017-12-14 Heidelberger Druckmaschinen Ag Verfahren zum Reinigen einer Mantelfläche eines Gummituchzylinders einer Nassoffsetdruckmaschine
JP5169908B2 (ja) * 2009-03-02 2013-03-27 株式会社リコー 転写装置及び画像形成装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR806855A (fr) * 1935-06-07 1936-12-28 Vomag Betr Ag Dispositif laveur pour les cylindres de caoutchouc des machines d'imprimerie rotatives offset
US3120805A (en) * 1960-11-19 1964-02-11 Roland Offsetmaschf Cleaning device for the blanket cylinders in offset printing machines
FR1351365A (fr) * 1961-05-06 1964-02-07 Roto Service Dispositif de nettoyage et de lavage automatique pour machines offset
DE1561008A1 (de) * 1966-11-10 1970-04-16 Maschf Augsburg Nuernberg Ag Waschvorrichtung fuer Gummizylinder von Rotationsdruckmaschinen
GB1169668A (en) * 1967-04-20 1969-11-05 Akerlund & Rausing Ab Improvements in and relating to Means for Washing a Cylinder in a Printing Press
US3897726A (en) * 1971-11-24 1975-08-05 Heidelberger Druckmasch Ag Washing device for a blanket cylinder of an offset printing press
DE3614496A1 (de) * 1986-04-29 1987-11-05 Heidelberger Druckmasch Ag Waschvorrichtung fuer druckzylinder von druckmaschinen
DE3929282A1 (de) * 1989-09-04 1991-03-28 Krause Biagosch Gmbh Waschvorrichtung fuer das gummituch eines gummituchzylinders einer druckmaschine
US5010819A (en) * 1989-09-22 1991-04-30 Oxy-Dry Corporation Blanket cleaning apparatus with selectively engageable flicker bar
DE4121017A1 (de) * 1991-06-26 1993-01-14 Koenig & Bauer Ag Wascheinrichtung fuer farbwerke bei druckmaschinen
DE4208079C2 (de) * 1992-03-13 1996-07-25 Roland Man Druckmasch Vorrichtung zum Waschen eines Zylinders einer Druckmaschine
JPH07115468B2 (ja) * 1993-04-13 1995-12-13 日本ボールドウィン株式会社 円筒体外周面の洗浄装置

Also Published As

Publication number Publication date
DE4438347C1 (de) 1996-02-22
EP0709191A1 (de) 1996-05-01
JPH08207260A (ja) 1996-08-13
DE59500289D1 (de) 1997-07-10
ATE153915T1 (de) 1997-06-15
JP2889163B2 (ja) 1999-05-10
US5566617A (en) 1996-10-22

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