EP0741030A2 - Méthode pour contrÔler ou régler l'encrage pendant une opération d'impression - Google Patents

Méthode pour contrÔler ou régler l'encrage pendant une opération d'impression Download PDF

Info

Publication number
EP0741030A2
EP0741030A2 EP96105191A EP96105191A EP0741030A2 EP 0741030 A2 EP0741030 A2 EP 0741030A2 EP 96105191 A EP96105191 A EP 96105191A EP 96105191 A EP96105191 A EP 96105191A EP 0741030 A2 EP0741030 A2 EP 0741030A2
Authority
EP
European Patent Office
Prior art keywords
tolerance
control
regulating
coloring
value
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Withdrawn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
EP96105191A
Other languages
German (de)
English (en)
Other versions
EP0741030A3 (fr
Inventor
Werner Dr. Huber
Bernd Kistler
Wolfgang Geissler
Harald Bucher
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 EP0741030A2 publication Critical patent/EP0741030A2/fr
Publication of EP0741030A3 publication Critical patent/EP0741030A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B41F33/0045—Devices for scanning or checking the printed matter for quality control for automatically regulating the ink supply

Definitions

  • the invention relates to a method for controlling or regulating the coloring during the printing process, in particular during the continuous printing process, of a printing press, wherein color measurement data are obtained from the continuously produced printed images and used for the control or regulating process for influencing the coloring when a predetermined tolerance is exceeded becomes.
  • the invention has for its object to provide a method for controlling or regulating the coloring, in which a simple and reliable activation of the color control or color control takes place and the coloring reaches its setpoint as quickly as possible.
  • the invention is not limited to this one-dimensional design, but of course several measurement fields with several measurement locations and per measurement location with several color measurement data can also be considered. For simplicity, however, only the example referred to as one-dimensional is discussed below.
  • Stable is to be understood as a state that would be maintained if no new control or regulation processes followed and also no disturbance variables would influence the process.
  • the control or regulating process is activated or continued in a corresponding manner, in order in turn to determine on the basis of an estimate whether it is due to the renewed control or regulating process now in the future stable state (estimated value) is within tolerance and so on.
  • the estimation is preferably carried out by means of a calculation with which an estimation curve is found. Control processes are often an exponential function that strives for a certain value that characterizes the new stable state. This value is compared to the specified tolerance.
  • the tolerance is preferably formed by a tolerance band lying around a desired value. This means that the nominal value of the coloring lies within the tolerance band, there being a positive and a negative tolerance zone around the nominal value, the control or regulating process being carried out or continued according to the invention if the estimated value is above the upper tolerance limit or below the lower tolerance limit.
  • the estimation is carried out taking into account the continuously determined color measurement data influenced by previous control or regulation. If the control or regulating process is triggered, the development of the actual color measurement data is recorded and taken into account.
  • the detection is preferably carried out by means of an optically operating detection device, which determines the measurement location, preferably of each print image, in the production process online, so that currently determined color measurement data are available, which are used as the basis for the estimate to be carried out.
  • the tolerance is a static tolerance and that the regulation or control is activated or continued if the estimated value is not in the range of the target value plus or minus the static tolerance.
  • a trend estimate of the future development of the color value shows that standard values lie within a future value Time span is exceeded or fallen short of.
  • This trend estimate is based on the forecast development of the color value under consideration, the current, actually determined color measurement data being Initial values are used to carry out the trend estimation, for example in a non-linear or linear form.
  • a straight line is first formed which approximates the color measurement data actually measured within a certain time period. This straight line is then extended for future development. If the extended straight line exceeds a preset value (or falls below a preset value in the event of a deviation from the setpoint downward), a control or regulating process takes place if the point in time of the exceedance lies within a predetermined period of time.
  • the default values (above and below) and the time span result from a dynamic tolerance, which, like the static tolerance, is generated automatically, for example by means of a computer, as soon as the operator of the printing machine enters a basic tolerance.
  • the basic tolerance thus forms the starting point for the static and the dynamic tolerance, the last two being calculated automatically according to certain specifications and taking into account the process dynamics.
  • a tolerance is formed around the target value S, which is characterized by a tolerance band, that is to say there is an upward and downward tolerance deviation with respect to a setpoint S possible.
  • + ⁇ 1 or - ⁇ 1 denotes a dynamic tolerance in connection with a tolerance period and a time of collision, which is described in more detail below, and a static tolerance with + ⁇ 2 or - ⁇ 2 , the width of the dynamic tolerance being +/- ⁇ 1 is greater than the width of the static tolerance +/- ⁇ 2 .
  • the static and the dynamic tolerance are calculated automatically by a computer of the printing press as soon as the operator enters a basic tolerance in the computer.
  • the computer determines the dynamic tolerance and the static tolerance from the basic tolerance, taking into account process-specific properties and the dynamic properties of the printing press. The latter two tolerances then form the basis for the further process for controlling or regulating the coloring.
  • a time period T T which forms a tolerance time period (time between T 0 and T T ), is automatically derived from the dynamic tolerance +/- ⁇ 1 by means of the computer. If the collision point T ' K now lies within the tolerance period T T , a control process is initiated.
  • the collision time T ' K defines a collision time period T K (time between T 0 and T K ), so that T K ⁇ T T for the above case.
  • the collision tent point T ' K lies outside the time period T T (T K > T T ), which means that no regulation has to be carried out.
  • the principle according to the invention is thus based on the fact that the stable state that arises only later is estimated during the control time and that a control process is initiated again if a predetermined deviation between the estimated value and the desired value is exceeded. If the estimated value is within the specified tolerance, it is monitored whether this condition is maintained. As long as this state exists, the associated measurement position is marked as in the coloring. Due to the fact that two different trend estimates - such as as described above, process control is thus predetermined as a function of different trend estimates.
  • step 1 an estimate is made to determine the future stable state of the color value (estimated value).
  • step 2 it is checked whether the estimated value is within the static tolerance.
  • a new regulation is then carried out in step 3 if the estimated value lies outside the tolerance limits of the static tolerance. Step 1 then follows again and so on. This process continues until the estimated value is within the dynamic tolerance.
  • a control system always starts when the static tolerance is exceeded, regardless of the behavior of the dynamic tolerance, or the dynamic tolerance is exceeded / fallen short of, regardless of the static tolerance, and the system is not yet in the process of leaving the setpoint Regulation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP96105191A 1995-05-04 1996-04-01 Méthode pour contrÔler ou régler l'encrage pendant une opération d'impression Withdrawn EP0741030A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19516353 1995-05-04
DE1995116353 DE19516353A1 (de) 1995-05-04 1995-05-04 Verfahren zum Steuern oder Regeln der Farbgebung während eines Druckprozesses

Publications (2)

Publication Number Publication Date
EP0741030A2 true EP0741030A2 (fr) 1996-11-06
EP0741030A3 EP0741030A3 (fr) 1997-03-19

Family

ID=7761055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96105191A Withdrawn EP0741030A3 (fr) 1995-05-04 1996-04-01 Méthode pour contrÔler ou régler l'encrage pendant une opération d'impression

Country Status (2)

Country Link
EP (1) EP0741030A3 (fr)
DE (1) DE19516353A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10013876B4 (de) 1999-04-08 2013-10-02 Heidelberger Druckmaschinen Ag Verfahren zum Regeln der Farbgebung beim Drucken mit einer Druckmaschine
DE102007011689B4 (de) * 2006-03-27 2016-04-28 Heidelberger Druckmaschinen Ag Optimierter Farbregeleingriff in Druckmaschinen
DE102017115145A1 (de) * 2017-07-06 2019-01-10 Manroland Goss Web Systems Gmbh Verfahren und Steuerungseinrichtung zum Betreiben einer Druckmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD200665A1 (de) * 1981-07-28 1983-06-01 Wolfgang Arnold Verfahren zur einstellung der farbdosierung an druckmaschinen
DE3220360A1 (de) * 1982-05-29 1983-12-01 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Einrichtung zur beeinflussung der farbgebung an druckmaschinen
DE3687074D1 (de) * 1985-03-21 1992-12-17 Felix Brunner Verfahren, regelvorrichtung und hilfsmittel zur erzielung eines gleichfoermigen druckresultats an einer autotypisch arbeitenden mehrfarbenoffsetdruckmaschine.
US5167010A (en) * 1989-08-03 1992-11-24 Westinghouse Electric Corp. Expert advice display processing system

Also Published As

Publication number Publication date
EP0741030A3 (fr) 1997-03-19
DE19516353A1 (de) 1996-11-07

Similar Documents

Publication Publication Date Title
DE19624615C2 (de) Verfahren zur Abstandsregelung für ein Kraftfahrzeug
DE3432131C2 (de) Verfahren und Vorrichtung zur Regelung eines Flüssigkeitsspiegels
AT525791B1 (de) Überwachungsverfahren für eine Stranggießkokille mit Aufbau einer Datenbank
EP0741029B1 (fr) Procédé de réglage d'encrage dans une machine à imprimer
EP0381957B1 (fr) Système de freinage anti-blocage avec limitation du moment de lacet
DE102019112465B4 (de) Leistungsaktives und adaptives lenkverhalten und gefühl in echtzeit für steer-by-wire-fahrzeuge
EP0706680B1 (fr) Systeme regulateur, en particulier pour un processus non lineaire variable dans le temps
EP0520233B1 (fr) Dispositif pour l'identification d'un système commandé
DE102016218845A1 (de) Verfahren und Vorrichtung zum Betreiben eines Lenksystems mit elektromechanischer Lenkunterstützung
EP0585740A1 (fr) Méthode pour la commande du processus d'impression dans une presse d'imprimerie à cliché trame en particulier une machine à imprimer offset à feuilles
DE3685538T2 (de) Integrierende regelung einer abhaengigen variablen in einem system mit mindestens zwei unabhaengigen variablen, die die abhaengige variable beeinflussen.
DE102020200209A1 (de) Verfahren und Vorrichtung zum Regeln eines Abstands eines Ego-Fahrzeug zu einem vorausfahrenden Fahrzeug
DE4204047C2 (de) Verfahren und Vorrichtung zur Positionierung eines Stellers in einem Kraftfahrzeug
EP0557541B1 (fr) Régulation à action directe, en particulier pour une cage de laminoir
EP0473914A2 (fr) Système de régulation d'un actuateur dans un moteur à combustion
DE10023067A1 (de) Verfahren und Vorrichtung zur Regelung eines Andockvorganges zwischen zwei Kraftfahrzeugen
DE3417293A1 (de) Druck- oder spritzgiessmaschine
EP0741030A2 (fr) Méthode pour contrÔler ou régler l'encrage pendant une opération d'impression
WO2002098685A1 (fr) Procede et dispositif de reglage dynamique d'une composante d'un vehicule
EP1542102B1 (fr) Procédé et dispositif de commande sous-optimal au moyen d'une stratégie de recherche et procédé et dispositif de séparation d'air, notamment de séparation d'air cryogénique
DE19641432A1 (de) Verfahren und Einrichtung zur Vorausberechnung von vorab unbekannten Parametern eines industriellen Prozesses
DE10122905C2 (de) Verfahren zur prozessgrößenabhängigen Kennsignalausgabe
DE102022203386B4 (de) Regelverfahren, Regelsystem, Kraftfahrzeug, Computerprogrammprodukt und computerlesbares Medium
EP4069448A1 (fr) Procédé et système informatique pour prédire le retrait d'un produit métallique coulé
EP1149331B1 (fr) Procede et dispositif de regulation d'un systeme regle

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960418

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 19981006

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19990408