EP1369234B1 - Procédé pour recommencer l'impression après une interruption - Google Patents

Procédé pour recommencer l'impression après une interruption Download PDF

Info

Publication number
EP1369234B1
EP1369234B1 EP20030010329 EP03010329A EP1369234B1 EP 1369234 B1 EP1369234 B1 EP 1369234B1 EP 20030010329 EP20030010329 EP 20030010329 EP 03010329 A EP03010329 A EP 03010329A EP 1369234 B1 EP1369234 B1 EP 1369234B1
Authority
EP
European Patent Office
Prior art keywords
ink
printing
roller
interruption
rollers
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.)
Revoked
Application number
EP20030010329
Other languages
German (de)
English (en)
Other versions
EP1369234A1 (fr
Inventor
Arndt Jentzsch
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.)
Koenig and Bauer AG
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
Family has litigation
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Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1369234A1 publication Critical patent/EP1369234A1/fr
Application granted granted Critical
Publication of EP1369234B1 publication Critical patent/EP1369234B1/fr
Anticipated expiration legal-status Critical
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Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/10—Tripping devices or stop-motions for starting or stopping operation of damping or inking units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/10—Starting-up the machine
    • B41P2233/11—Pre-inking

Definitions

  • the invention relates to a method for starting the printing after a print interruption, wherein the plate cylinder of a printing press is supplied during the printing process. This is done by the stored in the ink fountain color is transmitted via an intermittent ink lifter to a multi-roll existing, the plate cylinder associated inking.
  • the plate cylinder is supplied with fountain solution in the printing process via a dampening system.
  • the lift timing is stopped, the ink supply to the plate cylinder and the sheet run is interrupted, and to restart the printing process after the printing interruption, the color lifter is turned on, for example, see JP-A-58051154.
  • the ink layer thickness desired for the production printing sets itself on the inking rollers contacting the printing plate after a certain number of machine revolutions.
  • the result is a layer thickness color difference between the near color box rollers and the inking rollers.
  • the inking rollers When interrupting the printing, the inking rollers are turned off the printing form and the ink supply is interrupted by the ink lifter. By continuing to run the ink rollers, both the color profile of the inking rollers is disturbed and evened the ink gradient. When restarting after the printing interruption, the layer thickness of the inking rollers is too low and it takes a long time to adjust the printmaking strength of the ink layer. The resulting spoilage significantly reduces the productivity of the press.
  • the method described in DE 44 36 953 C1 can not solve the problem of color depletion of close to the ink fountain rollers.
  • an ink quantity is introduced into the inking unit during a first number of machine revolutions by the ink metering elements on the ink ductor, this ink quantity corresponding to the so-called basic ink quantity of the job.
  • the color profile required for the next print job is set during a second number of machine revolutions, until then the actual printing takes place with release of the sheet travel and the setting of the printing group cylinder.
  • the siphon strip width to a possible maximum value, that is to say, to set the squeegee width to a maximum value.
  • the squeegee takes the largest possible amount of ink from the ink fountain roller and transfers it to the color rollers downstream ink rollers.
  • the printing press is raised to as high a speed as possible (if possible, the maximum speed of the machine), so that the corresponding number of machine revolutions is traversed in the shortest possible time.
  • the object of the invention is to develop a method by which the accumulation of waste is reduced.
  • the invention has the advantage that now the printing press comes faster in pressure.
  • the color depletion of color roller near rollers is counteracted and the color / fountain solution equilibrium sets earlier. This reduces the waste.
  • an inking unit in which the stockpiled in an ink fountain ink is transferred in the printing operation via an intermittent ink lifter on a connected to the plate cylinder inking unit with multiple ink rollers.
  • the color-splitting processes on the roller pairings give rise to a color layer thickness gradient. starting from the ink fountain roller close to the printing plate contacting inking rollers.
  • the inking unit Since the inking unit is not stopped and neither an ink supply takes place, nor the inking unit color is removed, there is a progressive homogenization of the layer thicknesses on the rollers. If the inking unit is divided into several roller strands during the printing interruption, then the homogenization takes place within these roller strands.
  • the time of the print interruption is detected and fed to a also not described in detail, connected to a computer control unit.
  • machine-related data such as the number of rollers, diameter of the rollers, number and location of roller separation and the like
  • job-related data are stored or recorded in the controller. This includes in particular the length of the print interruption and the color requirement of the current print motif
  • the siphon is deactivated. This will provide the inking unit with color again. In the presence of a roller separation this is canceled. In the color box near area far fewer pairs of rolls are arranged, so that here, due to the smaller number of ink splitting operations, builds up a larger ink layer thickness on these rollers than at the plate cylinder near rollers.
  • the time is calculated at which a near-continuous color layer gradient has formed on the rollers near the ink fountain. In particular, it is also taken into account whether color burst separations are present.
  • the dampening unit is also switched on at the time of the start of the lifting cycle. This causes a faster setting of the color / fountain solution balance for some jobs. Furthermore, it is also possible to set the time of switching on the dampening unit between the time of the connection of the ink lifter and the beginning of the sheet run. The time for using the dampening unit as well as the time of use of the dye lifter can be calculated from the machine-related and job-related data provided by the controller.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (6)

  1. Procédé pour démarrer la poursuite de l'impression après une interruption selon lequel, pendant le procédé d'impression on fournit de l'encre au cylindre porte-plaque d'une machine d'impression de façon que l'encre contenue dans l'encrier soit transférée par un rouleau preneur, à fonctionnement intermittent, vers un dispositif d'encrage formé de plusieurs cylindres vers le cylindre porte-plaque qui reçoit de l'eau de mouillage pendant l'impression par un dispositif de mouillage,
    et pendant l'interruption de l'impression le mouvement cadencé du rouleau preneur est arrêté, l'alimentation en encre à partir de l'encrier vers le cylindre, porte-plaque de même que le mouvement des feuilles sont interrompus et pour la reprise de l'opération d'impression, après son interruption, on réactive le rouleau preneur,
    caractérisé en ce qu'
    avant la mise en oeuvre de la circulation des feuilles on commande le rouleau preneur pour effectuer un certain nombre de cadences de soulèvement pour transporter de l'encre sur un premier cylindre du dispositif d'encrage et le cas échéant on active le dispositif de mouillage.
  2. Procédé selon la revendication 1,
    caractérisé en ce qu'
    avant le début de la mise en circulation des feuilles on détermine le nombre de cadences du rouleau preneur nécessaire en fonction de la durée de l'interruption d'impression.
  3. Procédé selon la revendication 1,
    caractérisé en ce que
    la détermination du nombre de cadences du rouleau preneur nécessaire avant le début de la mise en circulation des feuilles se fait en fonction de la commande d'encre pour le motif à imprimer.
  4. Procédé selon la revendication 1,
    caractérisé en ce qu'
    à au moins un endroit du dispositif encreur on sépare les rouleaux.
  5. Procédé selon la revendication 4,
    caractérisé en ce que
    le choix du nombre de cadences du dispositif de levage d'encre se fait en fonction des traces d'encre résultant de la séparation des rouleaux.
  6. Procédé selon la revendication 1,
    caractérisé en ce que
    la mise en route du rouleau preneur supprime la séparation des cylindres.
EP20030010329 2002-06-07 2003-05-08 Procédé pour recommencer l'impression après une interruption Revoked EP1369234B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10225244.0A DE10225244B4 (de) 2002-06-07 2002-06-07 Verfahren zum Anfahren des Fortdrucks nach einer Druckunterbrechung
DE10225244 2002-06-07

Publications (2)

Publication Number Publication Date
EP1369234A1 EP1369234A1 (fr) 2003-12-10
EP1369234B1 true EP1369234B1 (fr) 2007-03-07

Family

ID=29432687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030010329 Revoked EP1369234B1 (fr) 2002-06-07 2003-05-08 Procédé pour recommencer l'impression après une interruption

Country Status (2)

Country Link
EP (1) EP1369234B1 (fr)
DE (2) DE10225244B4 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005035041A (ja) * 2003-07-16 2005-02-10 Ryobi Ltd 印刷機のインキ供給方法
DE102017200261B4 (de) 2017-01-10 2019-01-03 Koenig & Bauer Ag Verfahren zum Anfahren einer Druckmaschine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2845932A1 (de) * 1978-10-21 1980-04-24 Heidelberger Druckmasch Ag Kombiniertes feucht-farbwerk fuer offsetdruckwerke
JPS5851154A (ja) * 1981-09-22 1983-03-25 Mitsubishi Heavy Ind Ltd インキ供給装置
DD221690A1 (de) * 1983-12-22 1985-05-02 Polygraph Leipzig An- und abstellvorrichtung fuer farbwerkwalzen in druckmaschinen
DE4011039C2 (de) * 1990-04-05 1996-03-14 Roland Man Druckmasch Verfahren zum Befeuchten und Einfärben eines Plattenzylinders einer Mehrfarben-Offset-Bogenrotationsdruckmaschine
DE4436953C1 (de) * 1994-10-15 1996-05-15 Roland Man Druckmasch Verfahren zur Erzeugung einer Farbschichtdickenverteilung auf Farbwerkwalzen eines Farbwerkes einer Druckmaschine
DE4439144C2 (de) * 1994-11-03 1997-04-30 Roland Man Druckmasch Farbwerk einer Rotationsoffsetdruckmaschine
JPH1016193A (ja) * 1996-06-27 1998-01-20 Komori Corp インキ膜厚の制御方法
DE19756077A1 (de) * 1997-12-17 1999-06-24 Heidelberger Druckmasch Ag Verfahren zum Betrieb einer Rotationsdruckmaschine und Vorrichtung in einer Rotationsdruckmaschine
DE19801623B4 (de) * 1998-01-17 2004-02-05 Man Roland Druckmaschinen Ag Verfahren zum Betrieb einer Offset-Rotationsdruckmaschine
DE29807277U1 (de) * 1998-04-22 1998-07-02 MAN Roland Druckmaschinen AG, 63075 Offenbach Steuerung für ein Heberfarbwerk einer Druckmaschine
DE19857218C2 (de) * 1998-12-11 2001-12-13 Koenig & Bauer Ag Verfahren zum Einstellen eines Fortdruckfarbprofils
DE10115121B4 (de) * 2001-03-27 2005-11-17 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zur Erzeugung einer Farbverteilung im Farbwerk von Druckmaschinen

Also Published As

Publication number Publication date
DE10225244B4 (de) 2016-02-04
DE50306720D1 (de) 2007-04-19
DE10225244A1 (de) 2003-12-18
EP1369234A1 (fr) 2003-12-10

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