EP1090751B1 - Andruckverfahren mit Sprühfeuchtwerk - Google Patents
Andruckverfahren mit Sprühfeuchtwerk Download PDFInfo
- Publication number
- EP1090751B1 EP1090751B1 EP19990119762 EP99119762A EP1090751B1 EP 1090751 B1 EP1090751 B1 EP 1090751B1 EP 19990119762 EP19990119762 EP 19990119762 EP 99119762 A EP99119762 A EP 99119762A EP 1090751 B1 EP1090751 B1 EP 1090751B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- impression cylinder
- cylinder
- ink
- mist
- 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
- B41F5/00—Rotary letterpress machines
- B41F5/20—Rotary letterpress machines specially adapted for proof printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F5/00—Rotary letterpress machines
- B41F5/24—Rotary letterpress machines for flexographic printing
Definitions
- the invention relates to a method for printing with quick-drying ink on a flexographic printing machine with one impression cylinder and one on the circumference of the printing cylinder arranged ink application system, in which the printing speed while printing against the printing speed in actual printing operation is reduced.
- EP-A-0 646 458 describes a flexographic printing machine in which one is opposite a washing device is provided for the ink application system with which the impression cylinder, when it has moved away from the substrate, with Water is sprayed. This should dry out in the event of business interruptions the printing ink on the printing cylinder can be prevented.
- the paint application system is formed by an anilox roller rolling on the printing cylinder, which has a fine cup pattern on its surface and on its circumference a chambered doctor blade is arranged on the side opposite the impression cylinder is.
- the cells of the anilox roller are filled with printing ink in the chamber doctor blade.
- This printing ink is then applied to the printing parts of the clichés transferred to the impression cylinder, which is approximately diametrical in one of the anilox rollers opposite position rolls on an impression cylinder, so that the printing ink on the printing material fed over the impression cylinder is transmitted. Because of the high printing speed, the time span is between the inking of the printing cylinder with the help of the anilox roller and the Transfer the ink to the substrate so short that the ink has no time has to dry on the impression cylinder.
- EP-A-0 272 888 describes an offset printing machine in which the printing plate cylinder must be moistened so that the oil-based ink only from the printing parts is recorded while on the non-printing parts the acceptance of the color is prevented by a film of water.
- For moistening of the printing plate cylinder is in the direction of rotation between the Blanket cylinder and the inking roller arranged a spray system with which is sprayed with a liquid mist or vapor.
- An aniline rubber printing machine is known from DE-C-700 844, in which colored cuticles, which is when the ink is applied between the tips of the halftone dots have formed, can be removed using compressed air.
- the object of the invention is a pressure method for a flexographic printing machine to indicate with which even when using quick-drying paint prevent premature drying of the ink on the printing cylinder.
- This object is achieved in that during the pressure operation on the circumference of the printing cylinder in at least one opposite a liquid mist or - steam is generated.
- the zone or zones on the circumference of the impression cylinder in which the liquid mist generated can be seen both in the direction of rotation of the impression cylinder between the ink application system and the impression cylinder as well between the impression cylinder and the ink application system.
- the liquid mist delays the evaporation of the solvent and thus the drying of the color that was transferred to the clichés.
- the impression cylinder is kept moist after it has inked has delivered to the impression cylinder and before it again with the anilox roller comes into contact.
- the liquid that is on the impression cylinder precipitates, collects preferentially in due to capillary forces small-scale depressions between the printing parts of the clichés, so especially in areas where there is a risk of contamination with dried Ink is largest. This also applies in this case prevents the depressions of the clichés from drying out afflict.
- a suitable liquid density profile and suitable droplet sizes can be conventional Spray nozzles and spray systems are used as they are are known in the prior art.
- spray nozzles and spray systems are used as they are are known in the prior art.
- instead of a liquid mist instead of a liquid mist also be sprayed a liquid vapor in the vicinity of the Printing cylinder or condensed on the surface or simply by increasing of the steam partial pressure delays the drying of the paint. on the other hand the spraying of a liquid mist has the advantage that by evaporative cooling a cooling effect is also achieved.
- the liquid mist or vapor is preferably water or Steam. Since the water is neither harmful to health nor the environment in this case are no special emission protection or health protection measures required for the operating personnel.
- water is particularly useful in combination with aqueous inks, but is not limited to water-soluble inks, since there are also printing inks, the organic solvents such as Contain alcohol, can be diluted with water.
- the only drawing figure shows a schematic sketch of an inking system Flexographic printing.
- a pressure cylinder 10 rolls on the circumference of an impression cylinder 12 and comes in there with the printing material running over the impression cylinder Contact. Rolls on the side opposite the impression cylinder 12 the printing cylinder 10 on an anilox roller 14. At the perimeter of the anilox roller 14 is a chambered doctor blade in a position opposite the impression cylinder 10 16 arranged.
- the anilox roller 14 has on its surface in a known Show a fine grid of cups that pass through the chamber doctor blade 16 can be filled with printing ink. Excess ink is wiped out a downstream doctor blade 18 doctored.
- the press runs at a much lower pressure Speed than during actual printing.
- a fast drying paint is used and no special countermeasures would be hit, the ink could easily on the impression cylinder 10th dry and contaminate the clichés.
- a spray device 20th is arranged with a finely distributed in this circumferential zone of the printing cylinder Water mist 22 is generated.
- That form the water mist 22 becomes the water vapor partial pressure increased in the relevant peripheral zone of the printing cylinder.
- the spray device 20 is set somewhat obliquely, so that the water mist 22 a club directed away from the impression cylinder 12 forms.
- the printing cylinder 10 and accordingly also the impression cylinder 12 and the anilox roller 14 it is also possible to use the printing cylinder 10 and accordingly also the impression cylinder 12 and the anilox roller 14 to drive in the opposite direction of rotation. In this If the water mist 22 prevents or delays the evaporation of the paint, applied by the anilox roller 14 to the printing parts of the clichés as these printing parts move to the impression cylinder.
- the spray device 20 above the printing cylinder 10 is arranged, the wetting of the impression cylinder with the water mist 22 supported by the action of gravity.
- Both drive directions of the printing cylinder are possible. It is also possible one spray device each on the top and on the bottom of the Arrange pressure cylinder.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Description
Claims (4)
- Verfahren zum Andrucken mit schnelltrocknender Farbe auf einer Flexodruckmaschine mit einem Druckzylinder (10) und einem am Umfang des Druckzylinders angeordneten Farbauftragsystem (14, 16), bei dem die Druckgeschwindigkeit während des Andruckens gegenüber der Druckgeschwindigkeit im eigentlichen Druckbetrieb herabgesetzt ist, dadurch gekennzeichnet, daß während des Andruckbetriebs am Umfang des Druckzylinders (10) in mindestens einer gegenüber dem Farbauftragsystem winkelversetzten Zone ein Flüssigkeitsnebel (22) oder -dampf erzeugt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Flüssigkeitsnebel (22) ein Wassernebel ist.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Flüssigkeitsnebel (22) in einer Zone erzeugt wird, die in Rotationsrichtung des Druckzylinders (10) zwischen dem Gegendruckzylinder (12) und dem Farbauftragsystem (14, 16) liegt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Flüssigkeitsnebel (22) in einer Zone erzeugt wird, die in Rotationsrichtung des Druckzylinders (10) zwischen dem Farbauftragsystem (14, 16) und dem Gegendruckzylinder (12) liegt.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES99119762T ES2183467T3 (es) | 1999-10-06 | 1999-10-06 | Procedimiento de impresion de pruebas con un sistema de humidificacion por pulverizacion. |
EP19990119762 EP1090751B1 (de) | 1999-10-06 | 1999-10-06 | Andruckverfahren mit Sprühfeuchtwerk |
DE59902417T DE59902417D1 (de) | 1999-10-06 | 1999-10-06 | Andruckverfahren mit Sprühfeuchtwerk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19990119762 EP1090751B1 (de) | 1999-10-06 | 1999-10-06 | Andruckverfahren mit Sprühfeuchtwerk |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1090751A1 EP1090751A1 (de) | 2001-04-11 |
EP1090751B1 true EP1090751B1 (de) | 2002-08-21 |
Family
ID=8239124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19990119762 Expired - Lifetime EP1090751B1 (de) | 1999-10-06 | 1999-10-06 | Andruckverfahren mit Sprühfeuchtwerk |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1090751B1 (de) |
DE (1) | DE59902417D1 (de) |
ES (1) | ES2183467T3 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE700844C (de) * | 1936-05-12 | 1941-01-02 | Fischer & Krecke G M B H | Anilingummidruckmaschine |
JPS63158252A (ja) * | 1986-12-20 | 1988-07-01 | Kazuo Maruta | オフセツト印刷機の湿し方法並びに装置 |
IT1270926B (it) * | 1993-05-07 | 1997-05-16 | Mondadori Editore Spa | Apparecchiatura di stampa ad alta velocita' con matrice flexografica su nastro di carta continuo |
IT1262526B (it) * | 1993-10-01 | 1996-07-02 | Meschi Ind Grafica | Gruppo perfezionato di stampa tipografica rotativa in continuo in particolare adatto per stampa ad elevata velocita' e in regime intermittente. |
NL9400397A (nl) * | 1994-03-14 | 1995-10-02 | Anderson & Vreeland Bv | Inrichting voor het maken van proefdrukken. |
US5839364A (en) * | 1994-09-19 | 1998-11-24 | Goss Graphic Systems, Inc. | Dampening system for a printing press |
JPH08295009A (ja) * | 1995-04-27 | 1996-11-12 | Mitsubishi Heavy Ind Ltd | フレキソ印刷機 |
DE19750259B4 (de) * | 1997-02-17 | 2008-09-18 | Heidelberger Druckmaschinen Ag | Verfahren und Druckmaschine zum mehrfarbigen Bedrucken von nichtsaugendem Material |
-
1999
- 1999-10-06 DE DE59902417T patent/DE59902417D1/de not_active Expired - Lifetime
- 1999-10-06 EP EP19990119762 patent/EP1090751B1/de not_active Expired - Lifetime
- 1999-10-06 ES ES99119762T patent/ES2183467T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59902417D1 (de) | 2002-09-26 |
EP1090751A1 (de) | 2001-04-11 |
ES2183467T3 (es) | 2003-03-16 |
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