EP0453855B1 - Präparation des Farbwerks einer Druckmaschine bei Druckauftragswechsel - Google Patents

Präparation des Farbwerks einer Druckmaschine bei Druckauftragswechsel Download PDF

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Publication number
EP0453855B1
EP0453855B1 EP91105542A EP91105542A EP0453855B1 EP 0453855 B1 EP0453855 B1 EP 0453855B1 EP 91105542 A EP91105542 A EP 91105542A EP 91105542 A EP91105542 A EP 91105542A EP 0453855 B1 EP0453855 B1 EP 0453855B1
Authority
EP
European Patent Office
Prior art keywords
printing
inking
ink
unit
inking unit
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
Application number
EP91105542A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0453855A1 (de
Inventor
Bernd Müller
Anton Rodi
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0453855A1 publication Critical patent/EP0453855A1/de
Application granted granted Critical
Publication of EP0453855B1 publication Critical patent/EP0453855B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41F31/00—Inking arrangements or devices

Definitions

  • the invention relates to a method for eliminating and rebuilding a color profile of an inking unit of an offset rotary printing press having a printing form.
  • a printing unit for rotary printing presses which has at least two ink-guiding cylinders, such as plate cylinders and blanket cylinders.
  • a color-reducing unit that can be switched on or off is assigned to at least one of the ink-guiding cylinders in order to set a print-ready state.
  • This ink reduction unit takes over the function of the substrate, that is, the ink and dampening solution film supplied by the inking and dampening units is corresponding to the ink-carrying ink Cylinder transferred and taken from there by the color reduction unit. This enables the color profile required for the production run to be set without the printing material having to be printed on. Waste can be avoided as far as possible.
  • the invention is therefore based on the object of specifying a method of the type mentioned at the outset in which a color profile change can be carried out in a simple manner and at short notice, so that the makeready times are shortened when a print job is changed. Furthermore, the print-ready condition should be adopted as quickly as possible, so that waste is largely avoided.
  • this object is achieved in that, in order to eliminate the previous ink and to prepare for the construction of a new color profile, the printing plate is colored over the entire surface. This destroys or equalizes the existing color profile.
  • the full-surface inking of the printing form has the result that a corresponding ink distribution is established right into the inking unit, that is to say that there too, an equalization takes place over the longitudinal extent of the inking unit rollers Color distribution result. This is a good prerequisite for building up the new color profile required for the further print job on the "basic color layer thickness" thus formed. This eliminates the need to remove the entire ink volume from the inking unit, so that makeready times are significantly reduced when changing jobs.
  • the new color profile can be built up much more quickly on the leveled base color layer than in a washed, color-free inking unit.
  • the color profile presetting of the metering elements in the region of the ink fountain of the inking unit can either continue to maintain the old presetting or the printer already makes the new presetting there. Alternatively, however, it is preferably also possible for a neutral setting to take place there. If the color profile presetting corresponding to the new print job is already carried out when the printing plate is inked, the subject-specific color profile corresponding to the production status can be achieved all the more quickly, so that waste is largely avoided.
  • the dampening unit is preferably controlled in such a way that the printing form receives no or only a reduced amount of dampening solution.
  • the absence or the insufficient amount of dampening solution causes color-free areas of the printing form to take on color even during production, as a result of which the full-surface coloring according to the invention is established.
  • a blanket washing device assigned to a blanket cylinder which washes the printing form by the blanket cylinder assuming a contact position with the printing form.
  • the rubber blanket washer not only washes the rubber blanket, but through it The position of the blanket cylinder in relation to the printing form, that is to say the printing plate clamped on a plate cylinder, the washing liquid is also fed to the printing plate.
  • the machine design does not allow the sole positioning of the blanket cylinder and plate cylinder, but it must be expected that an impression cylinder carrying the printing material (for example paper) will at least approach the blanket cylinder to such an extent that the washing liquid is also to be feared there, one can be feared Adjust the pressure provided per se for a paper thickness compensation preferably in such a way that there is a sufficient distance between the impression cylinder and the blanket cylinder in order to avoid the transfer of washing liquid.
  • an impression cylinder carrying the printing material for example paper
  • the inking unit preferably has at least one inking roller which interacts with the printing form. This must therefore be shifted to a distance from the printing form during the washing process.
  • the invention further relates to a method for rebuilding a color profile of an inking unit of a rotary printing press having a printing form, in particular an offset printing press, preferably for carrying out a new printing job, the printing form to be used for the new printing job being inked over the entire surface and the dampening solution supply subsequently being set in such a way that that color-free areas of the subject become color-free when printed.
  • FIG. 1 shows a roller diagram of an offset printing machine, not shown in detail.
  • the roller diagram has an inking unit 1 and a dampening unit 2.
  • the inking unit 1 is provided with an ink fountain 3, the (not shown) metering element for Setting zonal color column has. From the ink fountain 3, an ink fountain pen 4 doses ink during operation.
  • a jack roller 5 interacts with the ink duct 4 and with a driven distribution cylinder 6.
  • the dampening unit 2 has a dampening solution box 26 filled with dampening solution 27, an immersion roller 28 with a partial section of its circumference being immersed in the dampening solution 27.
  • the dipping roller 28 interacts with a metering roller 29.
  • a rubber roller 30 is also provided.
  • Inking and dampening units 1, 2 also have further, driven cylinders 7, 8, 9 and 10. Furthermore, six rider and transfer rollers 11 to 16 and nine rubber rollers 17 to 25 are provided. If necessary, the inking and dampening units 1, 2 can be connected to one another via an intermediate roller (not shown).
  • both ink and fountain solution 27 are fed to a printing form 32.
  • the printing form 32 is a printing plate (not shown) mounted on a plate cylinder 33.
  • the transfer of ink and dampening solution 27 from the inking unit 1 or dampening unit 2 to the printing plate is carried out by the rubber rollers 18, 20, 23, 25 and 30. These are therefore also referred to as inking rollers 34 and the rubber roller 30 transferring the dampening solution as the dampening roller 35.
  • the inking rollers 34 and the dampening roller 35 can be placed in a contact position or a spacing position from the printing form 32 relocate.
  • the inking rollers 34 assume their contact position and the dampening roller 35 their spaced positions.
  • the printing plate 32 is first inked over the entire surface, that is to say the printing plate previously used and clamped on the plate cylinder 33.
  • This is preferably achieved by the fact that the spacing of the dampening roller 35 to the plate cylinder 33 and in the absence of a connection between dampening unit 2 and inking unit 1 (if an intermediate roller is used, this would have to be moved to a separation position), no dampening solution 27 reaches the printing form 32.
  • the full-surface coloring of the printing form 32 has repercussions on the color profile of the inking unit 1. There, the previous color profile originating from the print job carried out is destroyed, in particular equalized. This leads to a "basic color layer thickness", which the Forms the basis for building a new color profile for the next print job.
  • the old printing plate which is colored over the entire surface, should first be cleaned.
  • the inking rollers 34 are shifted into a spacing position from the printing form 32.
  • the dampening application roller 35 remains in its spaced position from the plate cylinder 33.
  • a blanket cylinder 36 which is always present in an offset printing press is brought into a contact position with the plate cylinder 33.
  • a blanket washing device 37 is assigned to the blanket cylinder 36. This has two washing rollers 38 running on the outer surface of the blanket cylinder 36 and a common roller 39 connecting the washing rollers 38.
  • a transfer roller 40 is provided which is in contact with the upper washing roller 38 and to which washing liquid can be supplied by means of a spray device 41.
  • a doctor device 42 is associated with the roller 39, under which a collecting trough 43 is arranged.
  • the washing liquid supplied by the spraying device is transferred to the blanket of the blanket cylinder 36 by means of the transfer roller 40 and the washing rollers 38.
  • the blanket cylinder 36 in turn transfers a certain proportion of the washing liquid to the plate cylinder 33, that is to say to the printing form 32, so that the ink covering forming the full-surface inking is loosened and removed. Color residues and the like reach the roller in this way 39 and are stripped there by the doctor device 42.
  • the printing plate previously used is cleaned, it is removed from the offset printing machine.
  • the printing plate to be used for the new printing job can then be clamped onto the plate cylinder 33.
  • the old printing plate is first removed and then the new printing plate is clamped onto the plate cylinder 33. Then the full-surface inking of the new printing plate takes place with the corresponding color profile setting. The printing plate is then washed as described. Finally you can start with the actual printing.
  • the new, full-surface inked printing plate to "run free" by supplying fountain solution, that is to say the full-surface inking is removed by supplying dampening solution to the areas which are actually free of ink. No washing process (as mentioned above) is then required.
  • a plate cylinder washing device can also be used.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
EP91105542A 1990-04-27 1991-04-08 Präparation des Farbwerks einer Druckmaschine bei Druckauftragswechsel Expired - Lifetime EP0453855B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4013463 1990-04-27
DE4013463A DE4013463A1 (de) 1990-04-27 1990-04-27 Praeparation des farbwerks einer druckmaschine bei druckauftragswechsel

Publications (2)

Publication Number Publication Date
EP0453855A1 EP0453855A1 (de) 1991-10-30
EP0453855B1 true EP0453855B1 (de) 1994-12-07

Family

ID=6405218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105542A Expired - Lifetime EP0453855B1 (de) 1990-04-27 1991-04-08 Präparation des Farbwerks einer Druckmaschine bei Druckauftragswechsel

Country Status (7)

Country Link
EP (1) EP0453855B1 (enrdf_load_stackoverflow)
JP (1) JPH07112524A (enrdf_load_stackoverflow)
AT (1) ATE115047T1 (enrdf_load_stackoverflow)
AU (1) AU643002B2 (enrdf_load_stackoverflow)
CA (1) CA2039354C (enrdf_load_stackoverflow)
DE (2) DE4013463A1 (enrdf_load_stackoverflow)
ES (1) ES2067076T3 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19631469C1 (de) * 1996-08-03 1998-02-19 Roland Man Druckmasch Verfahren und Vorrichtung zur Durchführung von Druckaufträgen

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025277A1 (en) * 1993-05-05 1994-11-10 Machinefabriek 'csw' B.V. Apparatus for transferring a printing fluid to a printing roller
DE4436953C1 (de) * 1994-10-15 1996-05-15 Roland Man Druckmasch Verfahren zur Erzeugung einer Farbschichtdickenverteilung auf Farbwerkwalzen eines Farbwerkes einer Druckmaschine
DE10057051B4 (de) 1999-12-06 2011-03-10 Heidelberger Druckmaschinen Ag Verfahren zum Anfahren einer Druckmaschine
DE102008009889A1 (de) * 2008-02-19 2009-08-20 Manroland Ag Verfahren zum Einfärben einer Druckform in einer Verarbeitungsmaschine
DE102008000726A1 (de) 2008-03-18 2009-09-24 Manroland Ag Walze für ein Druckwerk
DE102008000725A1 (de) 2008-03-18 2009-09-24 Manroland Ag Farbwerk und Feuchtwerk
DE102010017866A1 (de) 2009-05-07 2010-11-25 Heidelberger Druckmaschinen Ag Verfahren zur Steuerung eines Farbwerkes einer Druckmaschine
DE102010040383B4 (de) * 2010-09-08 2012-09-13 Koenig & Bauer Aktiengesellschaft Druckwerke und ein Verfahren zum Betreiben eines Druckwerkes
JP6093152B2 (ja) * 2012-11-12 2017-03-08 株式会社小森コーポレーション インキ供給方法およびインキ供給装置
JP6531571B2 (ja) * 2015-09-02 2019-06-19 大日本印刷株式会社 インキ膜厚制御方法、インキ膜厚制御装置及びインキ膜厚制御プログラム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2113608B2 (de) * 1971-03-20 1973-10-31 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Verfahren zum Betneb einer Off Setrotationsdruckmaschine
DD124643A1 (enrdf_load_stackoverflow) * 1975-11-20 1977-03-09
DE2819257C3 (de) * 1978-05-02 1984-02-09 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zur Freigabe oder Verriegelung der Schwenkbewegung einer durch eine Steuerkurve betätigbaren Heberwalze
DE3034588C2 (de) * 1980-09-13 1982-11-11 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Offset-Rotationsdruckmaschine mit einer Einrichtung zur Unterbrechung der Feuchtmittelzufuhr
DE3338143C2 (de) * 1983-10-20 1986-12-18 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Verfahren zur Erzeugung einer dem Druckbild entsprechenden Farbschichtstärke im Farbwerk einer Druckmaschine
DE3707695A1 (de) * 1987-03-11 1988-09-22 Heidelberger Druckmasch Ag Verfahren zur definierten erzeugung einer dem fortdruck nahen farbverteilung im farbwerk von rotationsdruckmaschinen
DE3800570A1 (de) * 1988-01-12 1989-07-20 Heidelberger Druckmasch Ag Druckwerk fuer rotationsdruckmaschinen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19631469C1 (de) * 1996-08-03 1998-02-19 Roland Man Druckmasch Verfahren und Vorrichtung zur Durchführung von Druckaufträgen
US5930468A (en) * 1996-08-03 1999-07-27 Man Roland Druckmaschinen Ag Method and device for use in the production of printing products

Also Published As

Publication number Publication date
DE59103742D1 (de) 1995-01-19
AU643002B2 (en) 1993-11-04
DE4013463A1 (de) 1991-11-07
ES2067076T3 (es) 1995-03-16
AU7534991A (en) 1991-11-07
CA2039354A1 (en) 1991-10-28
CA2039354C (en) 1999-10-26
JPH07112524A (ja) 1995-05-02
EP0453855A1 (de) 1991-10-30
DE4013463C2 (enrdf_load_stackoverflow) 1992-03-19
ATE115047T1 (de) 1994-12-15

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