EP0364736B1 - Méthode de détermination de la consommation d'encre dans une machine d'impression offset - Google Patents

Méthode de détermination de la consommation d'encre dans une machine d'impression offset Download PDF

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Publication number
EP0364736B1
EP0364736B1 EP89117083A EP89117083A EP0364736B1 EP 0364736 B1 EP0364736 B1 EP 0364736B1 EP 89117083 A EP89117083 A EP 89117083A EP 89117083 A EP89117083 A EP 89117083A EP 0364736 B1 EP0364736 B1 EP 0364736B1
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Prior art keywords
ink
printing
determined
consumption
amount
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
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EP89117083A
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German (de)
English (en)
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EP0364736A2 (fr
EP0364736A3 (fr
Inventor
Helmut Prof. Dr. Kipphan
Anton Rodi
Gerd Laubmann
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Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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Publication of EP0364736A3 publication Critical patent/EP0364736A3/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • 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
    • B41P2233/30—Measuring or controlling the consumption of ink
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/45—Sensor for ink or dampening fluid thickness or density

Definitions

  • the invention relates to a method for determining the consumption of printing ink in an offset printing machine according to the preamble of the main claim.
  • a device for measuring the ink transfer volume is known.
  • This device consists of a hand instrument which can be adjusted to an anilox roller. Color is transferred from the anilox roller to the hand instrument by a contact between the anilox roller and a roller arranged on the hand instrument. The transferred paint collects in a container that has a float to indicate the level of the container.
  • a major disadvantage of this prior art is the removal of the ink from the anilox roller. This disrupts the printing process, since after the ink has been removed at the removal point, color has to be built up again to create a uniform print image.
  • Another disadvantage is that this measurement of the current amount of ink on an anilox roller cannot be used to infer the total ink consumption of a print job. A continuous measurement cannot be carried out, so an adjustment of the color guide and thus a change in the color film during the printing process is not recorded.
  • Flow measuring devices are also known which measure the amount of ink supplied to the printing press.
  • flow measuring devices can only be used where there is a relatively high ink consumption, for example in web offset printing presses. It also requires one Color consumption determination suitable flow measuring devices and display devices, so that the use of such devices is not appropriate for cost reasons alone.
  • Influences such as B. temperature, surface quality of the substrate, setting of the printing machine are not taken into account when determining the amount of ink.
  • the invention is therefore based on the object of providing a method in which the printing ink required is determined on the printing press without additional special devices and with which an accurate consumption measurement on any offset printing press is thus possible at low cost.
  • An essential advantage of the invention is the determination of the ink consumption without special measuring devices.
  • the control systems on the press both for the ink gap opening and for the inking roller, generate feedback control signals.
  • the evaluation of these signals can be carried out without great effort by a suitable computing device and the color consumption, which is due to the specification of the color gap opening and the
  • the color strip width per unit of time which is determined by the speed of rotation of the inking roller, can be displayed continuously.
  • both the ink gap opening and the speed of rotation of the inking roller are preset.
  • This presetting is carried out on the basis of a previously carried out determination of the size of the ink-carrying surfaces of a printing plate or on the basis of stored presetting data.
  • the expected ink consumption based on a printing sheet or based on the total number of printing sheets, can be determined very early on. This creates the possibility of filling the expected amount of color into the printing press at the start of printing, so that it is no longer necessary to refill or check the color still available while the print job is being carried out.
  • the consumption determination of the printing ink serves to monitor the use of auxiliary materials when creating a printed product and to evaluate and calculate the total material or substance consumption.
  • the ink gap openings which differ according to the zonal ink requirement, are measured and the discrete ink layer thicknesses are determined from these measured ink gap openings, so that an ink layer thickness profile is determined the entire print width can be used to calculate the amount of ink.
  • an existing control device that controls the Printing machine is provided and which the set ink gap openings and the color stripe width are reported back from the printing machine, pulled out to determine consumption. This is modified so that the used ink is calculated from the reported data. This modification is possible in a simple manner by inserting the calculation algorithm into the control program present in the control device.
  • Such a control device is known for example under the name CPC 1 from Heidelberger Druckmaschinen AG and is described in the company magazine "Heidelberger sensoryen 3/35", year 1977.
  • the determined ink consumption can also be advantageously supplied to an operating data acquisition system, which records all operating data, including the consumption of auxiliary materials or energy, for producing the printed product and enables a calculation of the operating costs.
  • the color consumption can be printed out via a log printer and / or for display, for. B. brought on the monitor.
  • the color transfer to the printed product can be calculated from the color density value of the color on the printed product determined by densitometry. If the determined density value deviates from a target density, a correction factor is determined from this deviation and this considered in the consumption calculation.
  • the densitometrically measured data of the control strip is transmitted to the control device via data lines. Such a densitometric measuring device is also described in the above-mentioned company publication.
  • the consumption of all printing inks is determined in a multi-color printing machine. This consumption can be displayed both in total and for each individual color. In addition, the consumption can be output standardized to a certain number of printed products.
  • the ink fountain 1 is assigned a ink fountain roller (ink fountain roller) 2, between which the ink 3 is filled in a wedge-shaped space.
  • This ink is fed in a thin ink film from the ink fountain roller 2 via a lifting roller 4 to a first inking unit roller 5, from which it is transferred to an inking unit, not shown.
  • the ink film 6, which is partially transferred from the ink fountain roller 2 to the siphon roller 4, can be adjusted in its layer thickness s F via an ink metering device to the respective requirements, ie to the respective subject to be printed.
  • the length of the ink fountain 1 and the rollers is designed according to the maximum possible printing format.
  • the ink metering device 7 consists of zone-wide metering elements 8, which are arranged closely alongside one another along the ink fountain roller 2 and extend across the width of the ink fountain 1.
  • the setting of each dosing element 8 with respect to the desired ink layer thickness is carried out by a drive 23, which is coupled to a position detector. More details on the structure of the color metering devices can be found in DE-AS 26 48 098.
  • the ink film 6 is partly transferred to the lifter roller 4 due to the ink splitting.
  • the time span during which the lifting roller 4 rests on the ink fountain roller 2 and the speed of rotation of the ink fountain roller 2 determine the Color stripe width b F of the transferred color film.
  • the color strip length l F and the color layer thickness s F are defined by the color metering device 7.
  • FIG. 2 shows a longitudinal sectional illustration of an ink profile which is applied to the ink fountain roller 2 and from which the ink layer thickness s F and ink strip length l F can be seen.
  • the metering elements 8 are positioned on the ink fountain roller 2 above their respective support areas. Depending on the position of the metering elements, a more or less thick ink layer s F is transferred from the ink fountain 1 to the ink fountain roller 2.
  • the color strip length l F per dosing element is almost constant. The total color strip length L F can thus be determined from the number of individual dosing elements.
  • the ink per ink zone which is transferred to the elevator roller 4 within one elevator cycle.
  • the settings of the individual dosing elements 8 and thus the data required for determining the ink consumption are set on the control panel of the printing press and reported back by the printing press.
  • the width of the ink strips ie the setting time of the lifting roller on the ink fountain roller, is set via this control panel, so that this value can also be called up on the control panel.
  • the design of the printing unit influences this calculation, since the number of rollers and the arrangement of the rollers largely determine the ink distribution until it is applied to the printing plate.
  • Such a control panel for operating the printing press is known from the "Heidelberger horren", as mentioned above.
  • Figure 3 shows an offset printing unit.
  • the ink fountain 1 with the ink fountain roller 2 and the lifting roller 4 is known from FIG. 1 and does not need to be described any further.
  • the inking unit 25 contains distribution cylinders 26 to 29, rider rollers 30 to 34, a transfer roller 35, rubber rollers 36 to 40 and inking rollers 41 to 44.
  • the number and scope of the inking rollers also have an influence on the amount of printing ink which is ultimately applied to the printing plate.
  • the specific arrangement of the rollers in the inking unit 25 produces a precisely defined ink application to the printing plate via the inking rollers 41 to 44.
  • Each of the four inking rollers applies a specific amount of ink to the printing plate.
  • the printing plate is provided with dampening solution via a dampening unit 46. This is fed to the dampening unit 46 via a dampening solution container 47.
  • the inking of the printing plate is transferred via a blanket cylinder 48 to a sheet guided by the impression cylinder 49.
  • Color splitting also takes place both between the printing plate cylinder 45 and the blanket cylinder 48 and between the blanket cylinder 48 and the printing sheet 53. If one now looks at the entire course of the ink flow starting from the ink fountain 1 until the ink is applied to the printing sheet 53, it can be seen that only a fraction of the ink layer thickness applied on the ink fountain roller 2 onto the Sheet is transferred. However, this relationship between the two ink layer thicknesses can be determined on the basis of the structure of the inking unit, taking into account the number of ink splits between the rollers. This ratio essentially determines the constant K that depends on the respective machine type. The factor K is determined empirically by a test run.
  • the sheet transport cylinders 50 to 52 transport the printing sheets 53, 54 through the individual printing units of the printing press.
  • a device for determining the color consumption is shown in a schematic illustration in FIG. 4, the essential elements already being contained in the control panel.
  • the data that are required for determining the color consumption are fed to a central processing unit 12. These are the positions of the individual ink metering devices 7, the control signals of which are reported via the lines 13.
  • the speed of the ink fountain roller 2 is reported to the processing unit 12 via line 14.
  • further measured values for example the color temperature or the color viscosity, are reported to the processing unit 12 via sensors 24 for additional variables.
  • a data input or command input keyboard 15 is provided, with which default data, for example the number of print products to be created or the type of paper to be printed, are input.
  • the ink layer thickness s F is formed by the ink gap opening of each metering element.
  • the ink stripe length l F is constant for all zones, as is the ink stripe width b F , which is determined from the speed of the ink fountain roller 2.
  • the factor K represents a machine-specific constant which, as already mentioned, takes into account both the color splitting ratio in the inking unit and other influences on the ink consumption.
  • the factor f is a variable that takes further influences into account.
  • This factor f can be determined both by an analysis of the effect of the influencing factors on the color flow and a computational modeling, and by an empirical determination under certain printing conditions, i. H. at certain color temperatures, paper types, ambient temperatures, etc.
  • the determined amount of printing ink can be related to the printed product, i.e. per a certain number of prints or print job-related.
  • the determination of the amount of ink related to the print order is an important parameter for calculating the printing costs and also for monitoring the total ink consumption.
  • the determined ink consumption can be printed out via a data printer 16 or shown on a display 17.
  • a data printer 16 or shown on a display 17.
  • This memory is, for example, a diskette on which all the data relevant for printing, that is to say, for example setting values and further consumption values, are stored, these data being required in the case of repeat jobs for re-setting the machine and for predetermining the expected color requirement.
  • a so-called is used to preset the ink metering devices 7 on a printing press
  • Print plate reader 19 used.
  • the printing plate is scanned with this printing plate reader and the zonal portion of the printing to non-printing areas is recorded.
  • the measured values of the printing plate reader can be used in the color consumption determination for a first approximation of the expected color consumption and after the calculation of the actual color consumption, a comparison can be made between this approximate value and the calculated color consumption value.
  • the data determined by the printing plate reader 19 are transmitted via the line 20 to the processing unit 12.
  • the quality of the printed product is often monitored by means of a densitometric evaluation of a measuring strip printed on the printed product.
  • the measuring strip is evaluated on a measuring desk 21 and the color density of the individual colors is determined zonally. From this color density measurement the layer thickness of the color can be deduced.
  • the color density values are therefore also transmitted to the processing unit 12 via line 22, in which case these values can also represent a correction factor for the accuracy optimization of the calculated consumption.
  • the ink strip width per print product can be determined from the speed ratios of the printing cylinders, the ink fountain roller and the ink transfer roller.
  • the color consumption is calculated continuously, the current color consumption, the total accumulated and also the expected total color consumption can be displayed at any time, taking into account the number of print products to be created.

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

Claims (7)

  1. Procédé de détermination de la consommation d'encre dans une machine à imprimer offset, l'encre étant dirigée sur un mécanisme encreur de la machine à imprimer par un encrier (1) qui comporte des ouvertures réglables de passage d'encre et par un cylindre d'encrier (2) qui recueille l'encre sortant des ouvertures de passage, la quantité de l'encre consommée par unité de temps ou par nombre de produits imprimés étant déterminée selon la relation

    M F = K * s F * L F * b F * f
    Figure imgb0004

    à partir des épaisseurs de couche d'encre (sF) qui sont déterminées par les ouvertures de passage d'encre, de la longueur des rubans d'encre (LF) et de la largeur des rubans d'encre (bF) par unité de temps, qui est déterminée par la vitesse de rotation du cylindre encreur (2), K étant un constante fixée par les machines et qui tient compte du fait que de multiples dédoublements de l'encre réduisent l'épaisseur de la couche d'encre déposée sur le cylindre de l'encrier jusqu'au report sur la feuille d'impression et f représentant une variable déterminée empiriquement et qui est déterminée d'une part par les réglages de la machine et d'autre part par les matières devant être traitées, puis la quantité de l'encre consommée étant affichée et envoyée à un système d'enregistrement des données de fonctionnement.
  2. Procédé selon la revendication 1, caractérisé en ce que la constante K est déterminée empiriquement.
  3. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que la quantité déterminée de l'encre consommée est envoyée à un système d'enregistrement de données de fonctionnement et/ou à un sortie sur imprimante.
  4. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que la quantité d'encre consommée pendant le déroulement d'un ordre est redéterminée en permanence et comparée à une quantité d'encre déversée dans l'encrier avant le début de l'impression et un signal d'avertissement est déclenché si une quantité résiduelle n'atteint pas un certain niveau.
  5. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce qu'une première approximation de la consommation d'encre est formée à partir de la détermination de la fraction de surface imprimante d'un cliché, compte tenu du nombre de produits devant être imprimés.
  6. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que la quantité d'encre reportée sur la feuille d'impression est déterminée à partir de la fraction de surface imprimée et d'une épaisseur de couche d'encre qui est déduite d'une valeur de densité de l'encre.
  7. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que la consommation d'une ou de plusieurs encres est affichée en relation avec le volume d'encre et/ou la quantité d'encre pour un nombre déterminé de produits imprimés.
EP89117083A 1988-10-15 1989-09-15 Méthode de détermination de la consommation d'encre dans une machine d'impression offset Expired - Lifetime EP0364736B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3835221A DE3835221C2 (de) 1988-10-15 1988-10-15 Verfahren zur Bestimmung des Verbrauchs von Druckfarbe in einer Offsetdruckmaschine
DE3835221 1988-10-15

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EP0364736A2 EP0364736A2 (fr) 1990-04-25
EP0364736A3 EP0364736A3 (fr) 1991-02-20
EP0364736B1 true EP0364736B1 (fr) 1994-12-07

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EP89117083A Expired - Lifetime EP0364736B1 (fr) 1988-10-15 1989-09-15 Méthode de détermination de la consommation d'encre dans une machine d'impression offset

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US (1) US5031535A (fr)
EP (1) EP0364736B1 (fr)
JP (1) JP2513863B2 (fr)
CA (1) CA1318184C (fr)
DE (2) DE3835221C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705632A1 (de) * 1997-02-14 1998-09-03 Roland Man Druckmasch Verfahren und Anordnung zur Reinigung eines Teiles eines Druckwerkes einer Offsetdruckmaschine

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US5090315A (en) * 1991-06-13 1992-02-25 Man Roland Druckmaschinen Ag Electronically controllable ink fountain roll drive system, and method
DE4424591C1 (de) * 1994-07-13 1995-12-14 Roland Man Druckmasch Vorrichtung zur Zufuhr von Druckfarbe aus einer Farbspendereinrichtung in einen Farbkasten
DE19749063A1 (de) * 1997-11-06 1999-05-12 Heidelberger Druckmasch Ag Verfahren zur Gewinnung von Farbmeßwerten
JPH11286099A (ja) * 1998-04-02 1999-10-19 Think Lab Kk インキの使用量算出方法
DE19826810A1 (de) 1998-06-16 1999-12-23 Koenig & Bauer Ag Verfahren und Einrichtung zur Farbzufuhr
DE19845915B4 (de) * 1998-10-06 2005-03-17 Man Roland Druckmaschinen Ag Verfahren zur Farbzufuhrsteuerung
JP3339835B2 (ja) * 1999-03-10 2002-10-28 リョービ株式会社 印刷機のインキ供給制御装置及びインキ供給制御方法
DE10152470B4 (de) 2000-11-23 2014-08-14 Heidelberger Druckmaschinen Ag Verfahren zur Farbvoreinstellung beim Mehrfarbendruck
DE10058550A1 (de) * 2000-11-24 2002-05-29 Heidelberger Druckmasch Ag Verfahren zur Regelung des Farb-zu-Feuchtmittelgleichgewichts in einer Rotations-Offsetdruckmaschine
DE10159698B4 (de) * 2000-12-14 2015-03-26 Heidelberger Druckmaschinen Ag Verfahren zum Einstellen einer Farbmenge, die einem Druckzylinder einer Druckmaschine zugeführt wird
DE10159387A1 (de) * 2001-12-04 2003-06-12 Windmoeller & Hoelscher Verpackungsdruckmaschine mit eingebauter automatischer Vergleichsfunktion zwischen Druck- und Sollbild
DE10312998B4 (de) * 2002-04-03 2015-07-09 Heidelberger Druckmaschinen Ag Lernende Farbführung
DE10325185B4 (de) * 2002-07-01 2017-04-13 Heidelberger Druckmaschinen Ag Verfahren zum Betrieb eines Druckwerks einer Druckmaschine in Abhängigkeit von der Farbtemperatur sowie nach dem Verfahren arbeitende Druckmaschinensteuerung
DE10307345A1 (de) * 2003-02-21 2004-09-09 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zur Farbwerksteuerung
JP4683641B2 (ja) * 2005-02-09 2011-05-18 キヤノン株式会社 インクジェット記録装置
DE102005049896C5 (de) * 2005-10-17 2013-12-05 Manroland Web Systems Gmbh Verfahren zur Überwachung und Analyse des Druckprozesses einer Druckmaschine
JP5371219B2 (ja) * 2007-09-03 2013-12-18 アイマー・プランニング株式会社 印刷機
DE102013003923A1 (de) 2012-04-05 2013-10-10 Heidelberger Druckmaschinen Ag Verfahren zum Zuführen von Farbe in einem Aniloxfarbwerk mit einer Rasterwalze und einem Rakelfarbkasten
US20130291745A1 (en) * 2012-05-01 2013-11-07 Goss International Americas, Inc. Method and system for instantaneously determining printing fluid volume consumed in a printing press
CN112651649B (zh) * 2020-12-31 2024-04-16 江苏东方印务有限公司 一种数码印刷信息采集方法

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DE2648098C3 (de) * 1976-10-23 1984-01-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Farbkasten für Offset- oder Hochdruckmaschinen
DE2728738B2 (de) * 1977-06-25 1979-05-10 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Eulrichtung zur Kontrolle und Regelung der Farbgebung an Druckmaschinen
DE3424412A1 (de) * 1984-07-03 1986-01-16 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Steuervorrichtung fuer einen stellantrieb an einer druckmaschine
DD242200A1 (de) * 1985-11-06 1987-01-21 Polygraph Leipzig Verfahren und schaltungsanordnung zum normierten anzeigen der druckfarbenzufuhr

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Publication number Priority date Publication date Assignee Title
DE19705632A1 (de) * 1997-02-14 1998-09-03 Roland Man Druckmasch Verfahren und Anordnung zur Reinigung eines Teiles eines Druckwerkes einer Offsetdruckmaschine

Also Published As

Publication number Publication date
EP0364736A2 (fr) 1990-04-25
DE3835221C2 (de) 1994-04-21
EP0364736A3 (fr) 1991-02-20
CA1318184C (fr) 1993-05-25
JP2513863B2 (ja) 1996-07-03
DE58908734D1 (de) 1995-01-19
JPH02151443A (ja) 1990-06-11
US5031535A (en) 1991-07-16
DE3835221A1 (de) 1990-04-19

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