EP1670641A1 - Systeme d'impression en creux - Google Patents

Systeme d'impression en creux

Info

Publication number
EP1670641A1
EP1670641A1 EP04741986A EP04741986A EP1670641A1 EP 1670641 A1 EP1670641 A1 EP 1670641A1 EP 04741986 A EP04741986 A EP 04741986A EP 04741986 A EP04741986 A EP 04741986A EP 1670641 A1 EP1670641 A1 EP 1670641A1
Authority
EP
European Patent Office
Prior art keywords
inking
inking rollers
printing unit
gravure printing
forme cylinder
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.)
Withdrawn
Application number
EP04741986A
Other languages
German (de)
English (en)
Inventor
Uwe Johann Riedel
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.)
Officine Meccaniche Giovanni Cerutti SpA
Original Assignee
Koenig and Bauer 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1670641A1 publication Critical patent/EP1670641A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/061—Inking devices
    • B41F9/063—Using inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2231/00—Inking devices; Recovering printing ink
    • B41P2231/10—Axially segmented ducter rollers

Definitions

  • the invention relates to an intaglio printing unit according to the preamble of claim 1 or 2.
  • a printing form which is usually made of copper and has engraved depressions, is attached to a lateral surface of the forme cylinder. These depressions are filled with paint by the inking unit.
  • a paper web is pressed against the forme cylinder by an impression cylinder and soaks up the ink in the depressions.
  • excess ink lying on the printing form is scraped off by a doctor device, so that ink only remains in the depressions.
  • an inking unit for a rotogravure printing press which essentially consists of a doctor device, an ink tray and a collecting tray. With this inking unit, both the ink tray and the collecting tray are height adjustable.
  • an inking unit for a rotogravure printing press which comprises an ink tray for receiving ink, an inking roller and a doctor device acting on the outer surface of the forme cylinder.
  • the ink tray is arranged below the forme cylinder immersed in the ink.
  • the width of the ink tray is smaller than a width of the form cylinder.
  • gaps between the inking roller and the forme cylinder there may even be gaps between the inking roller and the forme cylinder, so that the printing form carried by the forme cylinder is not inked at all in places.
  • a gap occurs, for example, between the two cylinders in a medium width range if the forme cylinder has a large diameter and the inking roller has a small diameter, so that the inking roller sags more in the middle than the forme cylinder.
  • With a thin forme cylinder on the other hand, it can sag more than the inking roller, so that there is a gap in the edge areas between the forme cylinder and inking roller and the printing form is not inked here.
  • DE 42 38 054 C2 discloses an inking unit for an intaglio printing cylinder with a single continuous inking roller and an additional shorter backup roller.
  • CH 012 232, US 12 59 394 A and DE 17 68 214 U show inking rollers which are divided in the axial direction. These parts are arranged on a common axis.
  • the invention has for its object to provide a gravure printing unit.
  • Such Inking unit enables uniform inking even of wide forme cylinders, because there are several inking rollers, which means that individual inking rollers can be used to ink problematic areas of the forme cylinder.
  • a single inking roller therefore does not have to extend over the entire width of the surface of the forme cylinder to be inked. Rather, their width will preferably be limited to a surface area of the forme cylinder that can be easily inked, and each adjacent surface area will be assigned its own inking roller.
  • the short inking rollers can all be brought into contact with the forme cylinder over their entire width.
  • the inking rollers can be staggered in the inking unit.
  • the inking rollers can be staggered both along a width and along a length of the tub.
  • At least two inking rollers are particularly preferably arranged along a same axis.
  • the inking unit can be designed in such a way that two width sections, along each of which one inking roller extends, overlap.
  • the inking rollers very particularly preferably dip at least partially into the ink.
  • the inking rollers can then transfer ink from the tub directly to the molding cylinder without the need for any roller systems.
  • the inking rollers inside the tub can be adjusted in height separately. This makes it possible to individually adapt the inking rollers to a sag of the forme cylinder and to let them all act against the forme cylinder with the same contact force, so that there is a uniform inking of the printing form.
  • the inking rollers are preferably provided with a terry-like or a visco-elastic covering.
  • the printing unit has several inking rollers that can be adjusted to different parts of the width of a forme cylinder.
  • the inking rollers preferably belong to an inking unit as described above. However, it would also be conceivable to assign each inking roller its own ink tray.
  • FIG. 1 shows a cross section through a printing unit of a known rotogravure printing machine.
  • Figure 2 is a front view of part of a known printing unit with a large diameter forme cylinder.
  • FIG. 3 shows a front view of part of a known printing unit with a forme cylinder with a small diameter
  • 5 shows a second embodiment of an inking unit
  • 6 shows a third embodiment of an inking unit
  • FIG. 7 shows a cross section through a printing unit of a rotogravure printing press with an inking unit
  • FIG. 8 is a front view of part of a printing unit with an inking unit and a forme cylinder with a large diameter
  • Fig. 9 is a front view of part of a printing unit with an inking unit and a forme cylinder with a small diameter.
  • FIG. 1 A cross section through a known rotogravure printing unit 01 of a rotogravure printing press can be seen in FIG. 1. It consists of an inking unit 02, a cylinder 06, z. B. forme cylinder 06, a cylinder 07, z. B. impression cylinder 07, a squeegee 08 and guide cylinders 11.
  • the forme cylinder 06 carries on a lateral surface a printing form which has engraved depressions. It is rotatably mounted in a frame, not shown.
  • the inking unit 02 is positioned against the forme cylinder 06 from below.
  • the doctor blade 08 is positioned on the side of the molding cylinder 06.
  • the impression cylinder 07 presses against the forme cylinder 06 from above and delimits a pressure gap with it.
  • a web 09 to be printed with the printing unit 01 e.g. B. paper web 09 is guided through this pressure nip. Before entering the printing nip or after leaving the printing nip, the paper web 09 wraps around one of the guide cylinders 11.
  • the inking unit 02 comprises a tub 03 and a inking roller 04.
  • a liquid or a pasty ink is filled in the tub 03.
  • the inking roller 04 is rotatably mounted within the tub 03 and is partially immersed in the paint. It has a fibrous terry-like or viscose-elastic covering on its surface.
  • the inking unit 02 as a whole can be adjusted in height relative to the forme cylinder 06. In the position of the inking unit 02 shown in FIG. 1, the inking roller 04 is on the forme cylinder 06 hired.
  • the forme cylinder 06 is rotating. Due to its positive connection with the inking roller 04, the latter can also be rotated by the forme cylinder 06.
  • the inking roller 04 can also be driven independently of the forme cylinder 06 at a peripheral speed that deviates from the peripheral speed of the forme cylinder 06, so as to rub the ink on its surface. Because the inking roller 04 is immersed in the ink received in the tub 03, the inking roller 04 transfers this ink due to its rotational movement to the surface of the forme cylinder 06, more precisely, to the printing form applied to the outer surface of the forme cylinder 06. This effect is favored by the special absorbent coating of the inking roller 04. Because of its fibrous or elastic configuration, the ink can be introduced in particular into the depressions of the printing form.
  • FIGS. 2 and 3 illustrate the problem that arises when wide forme cylinders 06 are used in known printing units 01 of the type described, when a wide paper web 09 of 150 cm in width or more is to be printed.
  • Fig. 2 shows the situation in a printing group 01 with a forme cylinder 06 with a large diameter.
  • 2 shows a front view of part of the printing unit 01, namely the forme cylinder 06 with the inking roller 04 of the inking unit 02 set
  • the impression cylinder 07 can only be seen at its ends, since it is largely covered by the paper web 09 entering the impression gap formed by the impression cylinder 07 and forme cylinder 06.
  • the inking roller 04 sags downward. Although this also applies to the forme cylinder 06, its sag is considerably less than that of the inking roller 04 because it has a much larger diameter and thus a higher rigidity. As a result of the sagging of the inking roller 04, a gap S is formed in the middle of the inking roller 04 between the inking roller 04 and the forme cylinder 06. In the area of the gap S, the inking roller 04 does not come into contact with the forme cylinder 06. Because of this, this occurs in this area also not to ink the printing form applied to the forme cylinder 06. Color dropouts in the finished product are the result.
  • Fig. 3 shows a similar situation for a printing group 01 with a forme cylinder 06, which has a small diameter. Because of its own weight and because of the counter-pressure cylinder 07 pushing against it, the forme cylinder 06 now sags much more than the inking roller 04. In this case, gaps S are formed between the inking roller 04 and the forme cylinder 06 in their edge areas, while the inking roller 04 is in the middle the forme cylinder 06 is in contact. In the case shown in FIG. 3, the edge areas of the printing form applied to the forme cylinder 06 are therefore not inked, so that there are now color dropouts in the finished printed product in these areas.
  • FIG. 4 An inking unit 02, when such a column S can be avoided when used in a printing unit 01, is shown in FIG. 4.
  • Fig. 4 is a plan view of such an inking unit 02. It shows a tub 03 and three inking rollers 12; 13; 14, which are rotatably mounted within the tub 03.
  • Each of the Inking rollers 12; 13; 14 extends over only a limited width section of the tub 03.
  • the inking rollers 12; 13; 14 are staggered both along the width of the tub 03 and along the length of the tub 03.
  • the staggering of the inking rollers 12; 13; 14 along the width of the tub 03 is such that it proceeds from left to right with an increasing reference number, while the staggering along the length of the tub 03 is such that the inking rollers 12 and 14 are arranged on an axis and can be rotated about them is offset parallel to an axis about which the inking roller 13 rotates.
  • All three inking rollers 2; 13; 14 are arranged in such a way within the tub 03 that the respective width n sections along which one of the inking rollers 1; 13 or 14, touch the vertical lines drawn with dashed lines without overlap.
  • said width sections can also overlap.
  • Each of the at least three inking rollers 12; 13; 14 is preferably shorter than the bale of the gravure forme cylinder 06.
  • a length of the bale L12; L13; L14 each of the inking rollers 12; 13; 14 is, for example, shorter than 1.1 times the length L06 of the bale of the gravure forme cylinder 06 divided by the number N of the inking rollers 12; 13; 14 in the axial direction, d. H. z. B.
  • FIG. 5 Another embodiment of an inking unit is shown in FIG. 5.
  • the inking unit 02 is also shown here in a top view.
  • Three inking rollers 12 can be seen again; 13; 14, which are rotatably arranged within a tub 03.
  • the inking rollers 12; 13; 14 in the embodiment shown, but arranged all three along the same axis. Now the width sections along which the inking rollers 12; 13; 14 extend, spaced from each other.
  • Such an inking unit is well suited for printing several pages side by side on the paper web 09. These pages are always separated from one another by an unprinted zone. If the width and number of the inking rollers 12; 13; 14 are selected according to the number of pages to be printed side by side, the uncolored areas of the forme cylinder 06 coincide with the unprinted zones of the paper web 09.
  • FIG. 7 The effect of the inking unit 02 shown in FIG. 4 in a printing unit 01 is shown in FIG. 7, where a cross section through such a printing unit 01 with the inking unit 02 from FIG. 4 is shown.
  • holding means 16 can be seen with which the inking rollers 12; 13; 14 are held within the tub 03.
  • a positioning force with which the inking rollers 12; 13; 14 press against the forme cylinder 06, for each of the inking rollers 12; 13; 14 set individually. In this way, the inking rollers 12; 13; 14 adjust to the bending of the forme cylinder 06.
  • FIG. 8 This is shown in FIG. 8, in which parts of the printing unit 01 shown in FIG. 7 can be seen in front view.
  • the individual adjustment of the contact force for each inking roller 12; 13; 14 are all three inking rollers 12; 13; 14 now flush with the forme cylinder 06.
  • At no stead along the width of the forme cylinder 06 there is a gap S between the forme cylinder 06 and one of the inking rollers 12; 13; 14 on.
  • the printing form applied to the outer surface of the forme cylinder 06 is thus colored uniformly over the entire width of the forme cylinder 06.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Printing Methods (AREA)
  • Ink Jet (AREA)

Abstract

L'invention concerne un système d'impression (01) comprenant un cylindre porte-clichés (06) et un mécanisme d'encrage (02). Ledit mécanisme d'encrage (02) comprend une cuve (03) recevant de l'encre liquide ou pâteuse et un rouleau d'encrage (12, 13, 14) pouvant tourner dans la cuve et s'étendant sur une première section de la largeur de la cuve (03) et du cylindre porte-clichés. Outre le premier rouleau d'encrage (12, 13, 14), il est prévu au moins un autre rouleau d'encrage qui s'étend sur une seconde section de la largeur du cylindre porte-clichés (06) et de la cuve (03).
EP04741986A 2003-10-08 2004-07-09 Systeme d'impression en creux Withdrawn EP1670641A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10341709A DE10341709B4 (de) 2003-10-08 2003-10-08 Druckwerk
PCT/EP2004/051441 WO2005035249A1 (fr) 2003-10-08 2004-07-09 Systeme d'impression en creux

Publications (1)

Publication Number Publication Date
EP1670641A1 true EP1670641A1 (fr) 2006-06-21

Family

ID=34428073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04741986A Withdrawn EP1670641A1 (fr) 2003-10-08 2004-07-09 Systeme d'impression en creux

Country Status (7)

Country Link
US (1) US7493856B2 (fr)
EP (1) EP1670641A1 (fr)
JP (1) JP4415013B2 (fr)
CN (1) CN100460207C (fr)
DE (1) DE10341709B4 (fr)
RU (1) RU2349459C2 (fr)
WO (1) WO2005035249A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010260192A (ja) * 2009-04-30 2010-11-18 Fuji Tokushu Shigyo Kk グラビア印刷機におけるファニッシャーロール装置
DE102011009287B4 (de) 2011-01-24 2015-07-02 Ibg Monforts Walzentechnik Gmbh & Co.Kg Farbwerk
JP5859212B2 (ja) * 2011-02-14 2016-02-10 株式会社シンク・ラボラトリー 凹部付き部材の製造方法
RU2505414C1 (ru) * 2012-07-17 2014-01-27 федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный университет печати имени Ивана Федорова" (МГУП имени Ивана Федорова) Накатная группа красочного аппарата для вязких красок
CN107000428B (zh) * 2014-12-29 2019-09-17 惠普印迪格公司 涂覆流体的施加
CN105346205A (zh) * 2015-11-11 2016-02-24 樊官保 照相凹版接线印刷机及印刷方法
CN107053823A (zh) * 2017-05-31 2017-08-18 浙江伟博包装印刷品有限公司 凹印机油墨气泡挤压装置

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CH12232A (fr) * 1896-04-15 1896-11-15 Haddon Frank Daniel Machine perfectionnée pour l'impression des tissus
US1259394A (en) * 1917-04-21 1918-03-12 Charles J Gutberlet Inker.
DE1768214U (de) * 1958-04-02 1958-06-12 Emil & Carl Verweyen Maschine zum mehrfarbigen bedrucken von breitgeweben.
DE1230437B (de) 1960-05-16 1966-12-15 Gualtiero Giori Mehrfarben-Stahlstichdruckmaschine mit einer auf einem rotierenden Formzylinder angeordneten, gravierten Druckplatte und mehreren Teilbildzylindern
DE1768214A1 (de) 1968-04-13 1971-11-25 Lilly Co Eli Adamantane
DE3424721C2 (de) * 1984-07-05 1986-12-18 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbwerk für eine Druckmaschine
US5046417A (en) * 1990-10-01 1991-09-10 Paulson Harold E Vapor film equalizer dampening system for printing plate cylinder
DE4238054C2 (de) * 1992-11-11 1996-07-11 Koenig & Bauer Albert Ag Einrichtung zum Kompensieren der Durchbiegung eines Tiefdruckformzylinders
DE4340128C2 (de) 1993-11-25 1996-07-25 Koenig & Bauer Albert Ag Tiefdruckfarbwerk
US6354700B1 (en) * 1997-02-21 2002-03-12 Ncr Corporation Two-stage printing process and apparatus for radiant energy cured ink
IT1293897B1 (it) * 1997-04-21 1999-03-11 Olivetti Lexikon Spa Stampante a getto d'inchiostro idonea a ritardare la sovrapposizione dei fogli stampati e relativo metodo di funzionamento.
US6230620B1 (en) * 1997-05-05 2001-05-15 Koenig & Bauer Aktiengesellschaft Bearing for a rotary press cylinder
JPH1148455A (ja) * 1997-08-08 1999-02-23 Komori Corp 印刷機のインキ装置
DE19757815C1 (de) 1997-12-24 1999-07-22 Koenig & Bauer Ag Walze
DE19828142C2 (de) * 1998-06-24 2002-10-31 Polytype S A Heberfarbwerk für eine Druckmaschine
DE19912313A1 (de) 1999-03-19 2000-09-21 Roland Man Druckmasch Walzenanordnung für ein Farb-, Feucht- oder Lackwerk einer Rotationsdruckmaschine
DE50204172D1 (de) * 2002-02-26 2005-10-13 Fischer & Krecke Gmbh & Co Druckmaschine mit Vorrichtung zur Klischeereinigung
DE102004054425A1 (de) * 2004-11-10 2006-05-18 Weros Dienstleistungen Gmbh Feuchtmittel- und/oder Verdruckmittelübertragungseinrichtung für Druckmaschinen

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See references of WO2005035249A1 *

Also Published As

Publication number Publication date
CN1863674A (zh) 2006-11-15
WO2005035249A1 (fr) 2005-04-21
DE10341709B4 (de) 2007-09-20
US7493856B2 (en) 2009-02-24
JP2007533482A (ja) 2007-11-22
RU2006115781A (ru) 2007-11-27
DE10341709A1 (de) 2005-05-12
CN100460207C (zh) 2009-02-11
JP4415013B2 (ja) 2010-02-17
US20070051256A1 (en) 2007-03-08
RU2349459C2 (ru) 2009-03-20

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