EP0339409A2 - Process and apparatus for flexographic printing - Google Patents
Process and apparatus for flexographic printing Download PDFInfo
- Publication number
- EP0339409A2 EP0339409A2 EP89106782A EP89106782A EP0339409A2 EP 0339409 A2 EP0339409 A2 EP 0339409A2 EP 89106782 A EP89106782 A EP 89106782A EP 89106782 A EP89106782 A EP 89106782A EP 0339409 A2 EP0339409 A2 EP 0339409A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- temperature
- inking unit
- degrees celsius
- water color
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000007774 anilox coating Methods 0.000 claims description 8
- 239000003086 colorant Substances 0.000 abstract description 4
- 239000003973 paint Substances 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/02—Letterpress printing, e.g. book printing
- B41M1/04—Flexographic printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
Definitions
- the invention relates to a method for largely preventing the clogging of rasterized printing plates and a device for carrying out the method according to the preamble of patent claim 1.
- flexographic printing process It is known using the flexographic printing process to print periodicas, e.g. B. newspapers to use so-called flexographic watercolors with the printing medium paper
- the flexographic printing process is characterized by the use of screened rollers, which receive their ink application from a chamber doctor blade, and a plastic printing plate, e.g. B. photopolymer printing plate, inking (see also DE-OS 33 20 638; DE-OS 31 35 711).
- the printing surface of the printing plate is rasterized.
- the invention has for its object to provide a method and a device for performing the method with which it is possible to clog avoid as far as possible the screened surfaces of plastic-based printing plates that are colored with water colors.
- the web-fed rotary printing press in which water-dilutable flexographic printing ink (water-based ink) is used, does not have to be stopped in order to remove the surface d. H. to clean the cells of the screened surface of the pressure plate.
- a driven anilox roller is mounted in side frames.
- One or more ink application bars are arranged on and off the anilox roller.
- An upper doctor blade and a lower doctor blade are attached to the paint application bars.
- the paint application bar is with one opposite the outer surface, over the entire length of the paint application bar extending recess provided. This recess is connected to a paint feed device via a through hole.
- the anilox roller colors the printing plates on a plastic basis, e.g. B. photopolymers.
- water is continuously supplied to the chamber of the flushing inking unit via the through-hole, which is optionally kept at a temperature between 9 and 14 degrees Celsius.
- This water color is continuously fed to the flushing inking unit and the excess water color is continuously removed from the inking unit and returned to the ink supply and tempering device.
- the ink supply and tempering device keeps the temperature of the water color constant at an optionally set temperature between 9 and 14 degrees Celsius.
- the anilox roller is hollow and is connected via known rotor connections via feed and return lines to a device for supplying and tempering water color of a preselectable temperature.
- the water circulation is adjusted so that the surface temperature of the anilox roller is kept constant at a temperature that can be preselected between 18 and 22 degrees Celsius.
Landscapes
- Printing Methods (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum weitgehenden Verhindern des Zusetzens von gerasterten Druckplatten und eine Einrichtung zur Durchführung des Verfahrens nach dem Oberbegriff des Patentanspruches 1.The invention relates to a method for largely preventing the clogging of rasterized printing plates and a device for carrying out the method according to the preamble of patent claim 1.
Es ist bekannt unter Anwendung des Flexo-Druckverfahrens zum Druck von Periodicas, z. B. Zeitungen, mit dem Druckträger Papier sogenannte Flexo-Wasserfarben zu verwenden. Das Flexo-Druckverfahren ist charakterisiert durch die Anwendung von gerasterten Walzen, die von einem Kammerrakel ihren Farbauftrag erhalten und eine Kunststoff-Druckplatte, z. B. Photopolymere-Druckplatte, einfärben (siehe auch DE-OS 33 20 638; DE-OS 31 35 711). Die druckende Oberfläche der Druckplatte ist gerastert.It is known using the flexographic printing process to print periodicas, e.g. B. newspapers to use so-called flexographic watercolors with the printing medium paper The flexographic printing process is characterized by the use of screened rollers, which receive their ink application from a chamber doctor blade, and a plastic printing plate, e.g. B. photopolymer printing plate, inking (see also DE-OS 33 20 638; DE-OS 31 35 711). The printing surface of the printing plate is rasterized.
Es hat sich herausgestellt, daß neben allen Vorzügen, die "Wasserfarben", die im wesentlichen aus Farbpigmenten, einem Zusatz und Wasser bestehen, aufweisen, ein sogenanntes "plugging", das ist ein partielles "Zusetzen" des Rasters auf der Druckplatte, vorkommen kann. Diese Störung kann sich dann natürlich auch im gedruckten Bild zeigen. Die Gefahr des Zusetzens von Teilen der Druckplatte ist umso größer, je feiner das Raster und je größer der Flächenanteil der Rasterpunkte pro Flächeneinheit ist.It has been found that, in addition to all the advantages which "water colors" have, which consist essentially of color pigments, an additive and water, so-called "plugging", which is a partial "clogging" of the grid on the printing plate, can occur . This disturbance can of course also show up in the printed image. The risk of clogging parts of the printing plate is greater, the finer the grid and the larger the proportion of the grid points per unit area.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Einrichtung zur Durchführung des Verfahrens zu schaffen, mit denen es möglich ist, das Zusetzen von gerasterten Flächen von Druckplatten auf Kunststoffbasis, die mittels Wasserfarben eingefärbt werden, weitgehendst zu vermeiden.The invention has for its object to provide a method and a device for performing the method with which it is possible to clog avoid as far as possible the screened surfaces of plastic-based printing plates that are colored with water colors.
Diese Aufgabe wird durch die kennzeichnenden Teile der Ansprüche 1 oder 2 gelöst.This object is solved by the characterizing parts of claims 1 or 2.
Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß die Rollenrotationsdruckmaschine, in der wasserverdünnbaren Flexo-Druckfarbe (Wasserfarbe) verwendet wird, nicht angehalten werden muß, um die Oberfläche d. h. die Näpfchen der gerasterten Fläche der Druckplatte zu reinigen.The advantages that can be achieved with the invention are, in particular, that the web-fed rotary printing press, in which water-dilutable flexographic printing ink (water-based ink) is used, does not have to be stopped in order to remove the surface d. H. to clean the cells of the screened surface of the pressure plate.
Das Verfahren und ein Ausführungsbeispiel der Erfindung werden im folgenden näher beschrieben.The method and an embodiment of the invention are described in more detail below.
In einer das Flexo-Druckverfahren anwendenden Rollenrotationsdruckmaschine zum Drucken von z. B. Zeitungen besteht das Farbwerk z. B. aus einem sogenannten Spülfarbwerk, wie es in der DE-OS 31 35 711 bzw. DE-OS 33 20 638 beschrieben worden ist. In bekannter Weise ist in Seitengestellen eine angetriebene Rasterwalze gelagert. An die Rasterwalze an- und abstellbar sind eine oder mehrere Farbauftragsleisten angeordnet. An den Farbauftragsleisten sind ein oberes Rakelmesser und ein unteres Abstreifmesser befestigt. In angestellem Zustand liegen das Rakelmesser und das Abstreifmesser an einer Mantelfläche der Rasterwalze an. Die Farbauftragsleiste ist mit einer der Mantelfläche gegenüberliegenden, sich über die gesamte Länge der Farbauftragsleiste erstreckenden Ausnehmung versehen. Diese Ausnehmung steht über eine Durchgangsbohrung mit einer Farbzuführeinrichtung in Verbindung. Die Rasterwalze färbt die Druckplatten auf Kunststoffbasis, z. B. Photopolymere, ein.In a rotary printing press using the flexographic printing process for printing e.g. B. Newspapers there is the inking z. B. from a so-called flushing inking unit, as has been described in DE-OS 31 35 711 and DE-OS 33 20 638. In a known manner, a driven anilox roller is mounted in side frames. One or more ink application bars are arranged on and off the anilox roller. An upper doctor blade and a lower doctor blade are attached to the paint application bars. In the engaged state, the doctor blade and the doctor blade lie against a lateral surface of the anilox roller. The paint application bar is with one opposite the outer surface, over the entire length of the paint application bar extending recess provided. This recess is connected to a paint feed device via a through hole. The anilox roller colors the printing plates on a plastic basis, e.g. B. photopolymers.
Aus einer an sich bekannten Farbzuführ- und temperiereinrichtung wird der Kammer des Spülfarbwerkes über die Durchgangsbohrung fortwährend Wasserfarbe zugeführt, die auf einer Temperatur wahlweise zwischen 9 und 14 Grad Celsius gehalten wird. Diese Wasserfarbe wird fortwährend dem Spülfarbwerk zugeführt und die überschüssige Wasserfarbe fortwährend aus dem Farbwerk abgeführt und der Farbzuführ- und temperiereinrichtung zurückgeführt. Die Farbzuführ- und temperiereinrichtung hält die Temperatur der Wasserfarbe auf eine wahlweise eingestellte Temperatur zwischen 9 und 14 Grad Celsius konstant.From a paint supply and temperature control device known per se, water is continuously supplied to the chamber of the flushing inking unit via the through-hole, which is optionally kept at a temperature between 9 and 14 degrees Celsius. This water color is continuously fed to the flushing inking unit and the excess water color is continuously removed from the inking unit and returned to the ink supply and tempering device. The ink supply and tempering device keeps the temperature of the water color constant at an optionally set temperature between 9 and 14 degrees Celsius.
Die Rasterwalze ist hohl und über bekannte Rotoranschlüsse über Vor- und Rücklaufleitungen mit einer Einrichtung zum Zuführen und Temperieren von Wasserfarbe einer vorwählbaren Temperatur verbunden. Die Wasserzirkulation wird dabei so eingestellt, daß die Oberflächentemperatur der Rasterwalze auf einer zwischen 18 und 22 Grad Celsius vorwählbaren Temperatur konstant gehalten wird.The anilox roller is hollow and is connected via known rotor connections via feed and return lines to a device for supplying and tempering water color of a preselectable temperature. The water circulation is adjusted so that the surface temperature of the anilox roller is kept constant at a temperature that can be preselected between 18 and 22 degrees Celsius.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3814049A DE3814049A1 (en) | 1988-04-26 | 1988-04-26 | METHOD AND DEVICE FOR FLEXO PRINTING |
DE3814049 | 1988-04-26 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0339409A2 true EP0339409A2 (en) | 1989-11-02 |
EP0339409A3 EP0339409A3 (en) | 1991-08-07 |
EP0339409B1 EP0339409B1 (en) | 1994-08-10 |
Family
ID=6352902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89106782A Expired - Lifetime EP0339409B1 (en) | 1988-04-26 | 1989-04-15 | Process and apparatus for flexographic printing |
Country Status (4)
Country | Link |
---|---|
US (1) | US5010817A (en) |
EP (1) | EP0339409B1 (en) |
JP (1) | JP2806968B2 (en) |
DE (2) | DE3814049A1 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5226363A (en) * | 1990-09-11 | 1993-07-13 | The Langston Corporation | Dual pressure preload system for maintaining a member |
US5367982A (en) * | 1993-02-25 | 1994-11-29 | Howard W. DeMoore | Automatic coating circulation and wash-up system for printing presses |
DE9305552U1 (en) * | 1993-04-16 | 1993-06-03 | MAN Roland Druckmaschinen AG, 6050 Offenbach | Device for inline coating of printing materials in offset printing machines |
DE4413731C2 (en) * | 1994-04-20 | 1998-07-02 | Heidelberger Druckmasch Ag | Process for controlling the temperature of the printing ink in a printing press |
US5683508A (en) * | 1995-08-25 | 1997-11-04 | Fit Group, Inc. | Coating apparatus and method for dispensing a liquid, and draining and cleaning a coating apparatus |
US5826509A (en) * | 1995-10-18 | 1998-10-27 | Deneka; P. Kenneth | Printing coating head device |
US5694848A (en) * | 1996-03-13 | 1997-12-09 | Heidelberger Druckmaschinen Ag | Printing unit for water based inks |
US5768993A (en) * | 1997-05-09 | 1998-06-23 | Bryce International, L.L.C. | Inking system for offset printers |
US5927189A (en) * | 1997-12-30 | 1999-07-27 | Kimberly-Clark Worldwide, Inc. | Method and apparatus for thermal fusing with two textured endless belts |
US6631986B2 (en) * | 1998-12-16 | 2003-10-14 | Silverbrook Research Pty Ltd | Printer transport roller with internal drive motor |
AU2003248305B2 (en) * | 1998-12-16 | 2005-05-26 | Zamtec Limited | A printer for incorporation into consumer electronic (CE) systems with limited access |
AUPP773798A0 (en) * | 1998-12-16 | 1999-01-21 | Silverbrook Research Pty Ltd | An image creation method and apparatus(CEP02) |
SG116487A1 (en) * | 1998-12-16 | 2005-11-28 | Silverbrook Res Pty Ltd | Duplex inkjet printing system. |
US6383296B1 (en) | 1999-11-22 | 2002-05-07 | Harris & Bruno Machine Co. | Chambered doctor blade with automatic cleanup and ink replacement |
US6576059B2 (en) * | 1999-11-22 | 2003-06-10 | Harris & Bruno Company, Inc. | Chambered doctor blade system for water-based and UV-based coatings |
JP2002086886A (en) * | 2000-09-08 | 2002-03-26 | Nihon Tokkyo Kanri Co Ltd | Gravure printing method for printing with water-based ink and gravure printing machine using water-based ink |
DE102004042266A1 (en) * | 2004-09-01 | 2006-03-02 | Koenig & Bauer Ag | Short inking system tempering method for printing machine, involves setting scanning roller to optimal and job specific temperature and setting ink to temperature of scanning roller, when ink is supplied to squeegee |
US8960086B2 (en) | 2009-06-26 | 2015-02-24 | The Procter & Gamble Company | Systems and methods for varying the repeat pitch distance of a substrate for use with absorbent articles |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE442922C (en) * | 1925-08-10 | 1927-04-12 | Maschf Augsburg Nuernberg Ag | Process for treating the color before printing in gravure printing machines |
GB566461A (en) * | 1942-08-19 | 1945-01-01 | Goss Printing Press Co Ltd | Method of printing with water base and like inks |
DE1908043A1 (en) * | 1969-02-18 | 1970-09-03 | Leo Keller | Ink transfer for surface or relief - printing |
DE1801622A1 (en) * | 1968-10-07 | 1971-01-21 | Dipl Rer Pol Leo Keller | Method for controlling the mutual behavior of print carrier and printing ink, especially in gravure printing |
DE1786295A1 (en) * | 1968-09-13 | 1972-02-17 | H Dipl Rer Pol Keller Leo P | Process for controlling the mutual behavior of print carrier and printing ink |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2396946A (en) * | 1939-08-18 | 1946-03-19 | Interchem Corp | Method and apparatus for applying thermoplastic material to sheets or webs |
US2260364A (en) * | 1940-05-18 | 1941-10-28 | John Waldron Corp | Ink distribution system |
US4152986A (en) * | 1976-12-03 | 1979-05-08 | Dadowski Gilbert F | Method and apparatus for printing raised ink images |
US4362179A (en) * | 1980-09-26 | 1982-12-07 | Baldwin-Gegenheimer Corporation | Method and apparatus for controlling ink viscosity |
US4497250A (en) * | 1983-02-08 | 1985-02-05 | Motter Printing Press Co. | Ink Fountain |
DE3320638C2 (en) * | 1983-06-08 | 1986-10-16 | Koenig & Bauer AG, 8700 Würzburg | Ink dividing device on ink fountain rollers of printing machines |
DE3541458A1 (en) * | 1985-11-23 | 1987-05-27 | Koenig & Bauer Ag | SHORT INKS FOR OFFSETROTATION PRINTING MACHINES |
JPH01114442A (en) * | 1987-10-28 | 1989-05-08 | Tokyo Kikai Seisakusho Ltd | Ink arrangement |
-
1988
- 1988-04-26 DE DE3814049A patent/DE3814049A1/en not_active Withdrawn
-
1989
- 1989-04-15 DE DE58908162T patent/DE58908162D1/en not_active Expired - Fee Related
- 1989-04-15 EP EP89106782A patent/EP0339409B1/en not_active Expired - Lifetime
- 1989-04-18 US US07/339,692 patent/US5010817A/en not_active Expired - Lifetime
- 1989-04-26 JP JP1104821A patent/JP2806968B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE442922C (en) * | 1925-08-10 | 1927-04-12 | Maschf Augsburg Nuernberg Ag | Process for treating the color before printing in gravure printing machines |
GB566461A (en) * | 1942-08-19 | 1945-01-01 | Goss Printing Press Co Ltd | Method of printing with water base and like inks |
DE1786295A1 (en) * | 1968-09-13 | 1972-02-17 | H Dipl Rer Pol Keller Leo P | Process for controlling the mutual behavior of print carrier and printing ink |
DE1801622A1 (en) * | 1968-10-07 | 1971-01-21 | Dipl Rer Pol Leo Keller | Method for controlling the mutual behavior of print carrier and printing ink, especially in gravure printing |
DE1908043A1 (en) * | 1969-02-18 | 1970-09-03 | Leo Keller | Ink transfer for surface or relief - printing |
Also Published As
Publication number | Publication date |
---|---|
JPH01317789A (en) | 1989-12-22 |
US5010817A (en) | 1991-04-30 |
DE58908162D1 (en) | 1994-09-15 |
JP2806968B2 (en) | 1998-09-30 |
DE3814049A1 (en) | 1989-11-09 |
EP0339409A3 (en) | 1991-08-07 |
EP0339409B1 (en) | 1994-08-10 |
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