EP0709191B1 - Procédé pour nettoyer un cylindre d'une machine d'impression - Google Patents
Procédé pour nettoyer un cylindre d'une machine d'impression Download PDFInfo
- 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
Links
Images
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)
Claims (6)
- Procédé pour nettoyer un cylindre tournant dans une machine d'impression, au moyen d'un liquide de lavage et au moins d'un rouleau laveur pouvant être déplacé vers le cylindre et tournant en sens contraire à ce dernier,
caractérisé en ce que le rouleau laveur (2) est entraîné, durant le processus de nettoyage, temporairement, dans le même sens que le cylindre (1) à nettoyer. - Procédé selon la revendication 1,
caractérisé en ce que le rouleau laveur (2) est entraîné dans le même sens que le cylindre (1) à nettoyer, lorsque la zone de l'extrémité d'impression du cylindre (1) est nettoyée. - Procédé selon la revendication 1,
caractérisé en ce que le rouleau laveur (2) est entraîné dans le même sens, au moins durant une rotation complète du cylindre (1) à nettoyer. - Procédé selon la revendication 1,
caractérisé en ce que le rouleau laveur (2) est entraîné, en alternance, en sens contraire et dans le même sens que le cylindre (1) à nettoyer. - Procédé selon la revendication 4,
caractérisé en ce que le rouleau laveur (2) est entraîné respectivement, pour au moins une rotation complète du cylindre (1), dans le même sens et en sens contraire. - Procédé selon l'une des revendications 1 à 5,
caractérisé en ce que le sens de rotation du rouleau laveur (2) est commandé par un dispositif de commande en dépendance d'un signal de capteur qui est déclenché lors du passage du cylindre (1) dans une position déterminée.
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 (fr) | 1996-05-01 |
EP0709191B1 true EP0709191B1 (fr) | 1997-06-04 |
Family
ID=6531807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95114779A Expired - Lifetime EP0709191B1 (fr) | 1994-10-27 | 1995-09-20 | Procédé pour nettoyer un cylindre d'une machine d'impression |
Country Status (5)
Country | Link |
---|---|
US (1) | US5566617A (fr) |
EP (1) | EP0709191B1 (fr) |
JP (1) | JP2889163B2 (fr) |
AT (1) | ATE153915T1 (fr) |
DE (2) | DE4438347C1 (fr) |
Families Citing this family (12)
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)
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 |
-
1994
- 1994-10-27 DE DE4438347A patent/DE4438347C1/de not_active Expired - Fee Related
-
1995
- 1995-09-20 AT AT95114779T patent/ATE153915T1/de not_active IP Right Cessation
- 1995-09-20 EP EP95114779A patent/EP0709191B1/fr not_active Expired - Lifetime
- 1995-09-20 DE DE59500289T patent/DE59500289D1/de not_active Expired - Lifetime
- 1995-10-19 US US08/545,251 patent/US5566617A/en not_active Expired - Fee Related
- 1995-10-25 JP JP7277599A patent/JP2889163B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE4438347C1 (de) | 1996-02-22 |
EP0709191A1 (fr) | 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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