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EP0095437A1 - Dispositif pour le repérage de machines à imprimer - Google Patents

Dispositif pour le repérage de machines à imprimer Download PDF

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Publication number
EP0095437A1
EP0095437A1 EP83710027A EP83710027A EP0095437A1 EP 0095437 A1 EP0095437 A1 EP 0095437A1 EP 83710027 A EP83710027 A EP 83710027A EP 83710027 A EP83710027 A EP 83710027A EP 0095437 A1 EP0095437 A1 EP 0095437A1
Authority
EP
European Patent Office
Prior art keywords
printing unit
mark
printing
register control
length
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Withdrawn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
EP83710027A
Other languages
German (de)
English (en)
Inventor
Stefan Erling
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Publication of EP0095437A1 publication Critical patent/EP0095437A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/025—Registering devices

Definitions

  • the invention relates to an arrangement for register control in a printing system according to the preamble of claim 1.
  • the marks that are used for the pattern matching are used on the one hand when starting the printing units and on the other hand for automatic control of the pattern matching during the Company used (so-called register regulation).
  • register control or regulation is to check, control or possibly regulate the mutual angular position of the printing rollers when starting up and during operation, so that the correct pattern matching results.
  • the most frequently used principle for scanning register control marks is to use an optical arrangement to detect the transition from a lighter to a darker or from a darker to a lighter area on the scanning track. In this way you scan the leading and trailing edges of a mark.
  • the length of the marks is measured with the aid of length increments by pulse generators which are attached to the printing cylinders. By comparing the measured length of these marks with a target value, it can be determined whether the register mark is correct or incorrect.
  • a reading track is required for each printing cylinder and thus a scanning arrangement is also required for each track.
  • brand identification is that by comparing the position of that mark on the tape with the position of a fixed mark on the platen, a measure or signal is obtained that corresponds to the difference between the desired coincidence and the actual position.
  • This signal which describes the deviation from the correct position, is used to control the positions of the printing units relative to one another in order to achieve the pattern matching.
  • the register control control via differential control or loop control are necessarily relatively slow controls, with a particularly desired dynamic accuracy being difficult to achieve.
  • the invention has for its object to develop an arrangement of the type mentioned that works with relatively simple means and requires little space on the material web and is able to correct the errors of pattern matching relatively quickly.
  • the invention includes an arrangement which makes it possible to create identifiable marks for each printing unit in only one scanning track.
  • the arrangement requires only one scanning arrangement for each printing unit to scan the print marks.
  • the invention includes an arrangement for distinguishing the marks and being able to select the desired marks, and with the aid of the position of the marks it is capable of deviating between the desired and the actual angular position (phase position) between the individual printing cylinders measure up. The deviation is then used for control so that a pattern match is obtained.
  • the marks are identified by measuring the length of each mark with a pulse generator and checking whether the measured length lies within a range which is determined by a predetermined target value and a maximum permissible positive or negative deviation from this target value. If the identification is positive, the deviation of the measured length from a target length is determined. This deviation is then used to control or regulate the angle of the pressure roller so that the deviation is eliminated.
  • the figure shows a printing system, which consists of three printing units 1, 2 and 3, each of which is provided with a drive arrangement consisting of a motor M with gear 11, 21, 31 and mounted pulse generators G 21, 22, 32 serving as speed sensors .consists. Each printing unit is provided with a digital speed control arrangement with corresponding speed controllers 13, 23, 33. The common speed setpoint is designated by NR.
  • the motors M are supplied from a three-phase network via power supply elements 14, 24, 34.
  • the printing units 2 and 3 have a superimposed position control with position controllers 25, 35 and also a superimposed control unit for pattern matching between the individual printing units.
  • the latter regulation includes optical scanning elements 26, 36, counters 27, 37, comparison elements 28, 38 and difference images 29, 39.
  • a scanning track B On the running web or the tape A there is a scanning track B on which stamps of various types are printed.
  • a, b and c show overlapped control marks in an enlarged view.
  • the printing unit 1 serves as the leading printing unit.
  • the printing units 2 and 3 are position-controlled relative to the printing unit 1.
  • the setpoint PR for this control is supplied by the pulse generator 12 of the printing unit 1.
  • a certain number of pulses from the pulse generator 12, which correspond to a certain length of the web, should correspond to the same number of pulses from the pulse generators 22 and 32.
  • the comparison between these pulses and the setpoint of the pulse generator 12 takes place in the position controllers 25, 35.
  • a possible deviation is applied to the speed controllers 23, 33 as an additional setpoint.
  • the printing unit 1 If the running web A passes the printing unit 1, you get on the track a number of brands, one of which brand a with the length 1 1 in the web direction as register control mark be should be used.
  • the printing roller in plant 1 prints the pattern, the text or the images which are provided for the current overall printing image on the running web A.
  • the printing roller of the printing unit 2 is intended to complete the printed image printed by the printing unit 1 on the running web 1 with further parts of the pattern and further text and, in the case of multicolored printing, overprinting parts of the images with a different color than the printing ink used in the unit 1, and so on If the entire pattern is given the correct shape, the text becomes legible and the colors of a multicolored image come exactly to the right place, the printing unit 2 must have the correct phase position (angular position of the printing roller) relative to the part already printed on the web.
  • a further register control mark is printed in the printing unit 2 and applied on the web in such a way that it overlaps the mark a to a certain extent in the longitudinal direction.
  • the overlap is chosen so that, with a correct pattern fit, a certain total length 1 2 of the resulting mark b is obtained.
  • a measuring arrangement is arranged on the printing unit 2, which has a dual function.
  • the measuring arrangement should be able to identify a register control mark which differs from the other marks, and on the other hand the arrangement after identification should deliver a signal value which indicates the deviation, 82 between the actual length 1 2v of the mark and its length 1 2 with correct pattern matching.
  • the measuring arrangement consists of an optical scanning element 26, which is placed over the reading track.
  • the meter shows the passage of the leading and trailing edge of a mark through dark or light reflection.
  • the pulse generator 22 which is connected to the drive arrangement of the web in the printing unit 2 sen, pulses are generated, each pulse period corresponding to a certain path length.
  • the counter 27 starts counting the pulses when the sensing member 26 indicates the detection of the leading edge of a mark. When displaying the detection of the trailing edge of a mark, the counter is stopped.
  • the measured value m2 which may originate from any of the marks present in the scanning track, is stored in a memory of the counter 27, after which the counter is reset to start at the next mark with a new count of the length 1 2 can.
  • the accepted value is supplied to the difference image 29, in which the difference ⁇ 2 is formed from l 2v and the length l 2 with correct pattern matching.
  • This value is a measure of the mismatch between plant 1 and plant 2, that is to say the control deviation, and this value is fed to the angular position controller 25, the output signal of which is fed to the speed controller 23.
  • the following printing unit 3 - the same applies to any further printing unit that may be present - is constructed exactly like printing unit 2.
  • the overlap of the register control marks results in a mark c, the length of which is 1 3 if the pattern fits correctly.
  • the identification of the control mark, the formation of the control deviation ⁇ 3 and the correction of the error takes place in the same way as in the printing unit 2.
  • the position control consists in adapting the angular positions of the rolls 2, 3, etc. to the angular position of the roll 1.
  • the manipulated variable of this control is therefore the speed of the rolls.
  • the invention can also be used in the event that the mutual distance between the pressure rollers is used as the manipulated variable, that is to say this distance is changed as a function of the control deviation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP83710027A 1982-05-17 1983-05-07 Dispositif pour le repérage de machines à imprimer Withdrawn EP0095437A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8203082 1982-05-17
SE8203082 1982-05-17

Publications (1)

Publication Number Publication Date
EP0095437A1 true EP0095437A1 (fr) 1983-11-30

Family

ID=20346834

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83710027A Withdrawn EP0095437A1 (fr) 1982-05-17 1983-05-07 Dispositif pour le repérage de machines à imprimer

Country Status (1)

Country Link
EP (1) EP0095437A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0464001A2 (fr) * 1990-06-29 1992-01-02 ARICI, Giancarlo Rotative à bobines pour la surimpression
WO1994016893A1 (fr) * 1993-01-19 1994-08-04 Eltromat Gesellschaft für Industrie-Elektronik mbH Dispositif permettant de determiner l'erreur de reperage entre des couleurs individuelles pendant l'impression polychrome effectuee sur une presse rotative a bande longue
EP0692377A3 (fr) * 1994-07-13 1997-02-05 Wifag Maschf Procédé et dispositif pour l'entraînement synchrone de composants d'une machine d'impression
US7448321B2 (en) 2002-09-19 2008-11-11 Koenig & Bauer Aktiengesellschaft Drive devices and method for driving a processing machine
DE102017101812A1 (de) 2017-01-31 2018-08-02 Océ Holding B.V. Verfahren zur Passerregelung eines Drucksystems und Drucksystem

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR779825A (fr) * 1933-10-16 1935-04-13 Publications Periodiques Sa De Perfectionnements apportés aux procédés et dispositifs pour repérer les positions relatives d'un organe mobile par rapport à plusieurs autres organes mobiles, notamment en vue des applications aux machines à imprimer
FR1041804A (fr) * 1950-05-20 1953-10-27 Goebel Ag Procédé et dispositif pour le repérage électronique d'impressions en plusieurs couleurs
FR1053915A (fr) * 1951-07-31 1954-02-05 Servomecanismes Electroniques Perfectionnements aux machines à imprimer
US3033109A (en) * 1958-12-08 1962-05-08 Hurletron Inc Registration detection system
GB958709A (en) * 1962-03-14 1964-05-27 Evershed Vignoles Ltd Improvements relating to printing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR779825A (fr) * 1933-10-16 1935-04-13 Publications Periodiques Sa De Perfectionnements apportés aux procédés et dispositifs pour repérer les positions relatives d'un organe mobile par rapport à plusieurs autres organes mobiles, notamment en vue des applications aux machines à imprimer
FR1041804A (fr) * 1950-05-20 1953-10-27 Goebel Ag Procédé et dispositif pour le repérage électronique d'impressions en plusieurs couleurs
FR1053915A (fr) * 1951-07-31 1954-02-05 Servomecanismes Electroniques Perfectionnements aux machines à imprimer
US3033109A (en) * 1958-12-08 1962-05-08 Hurletron Inc Registration detection system
GB958709A (en) * 1962-03-14 1964-05-27 Evershed Vignoles Ltd Improvements relating to printing

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0464001A2 (fr) * 1990-06-29 1992-01-02 ARICI, Giancarlo Rotative à bobines pour la surimpression
FR2663882A1 (fr) * 1990-06-29 1992-01-03 Arici Giancarlo Rotative a bobines pour la surimpression.
EP0464001A3 (en) * 1990-06-29 1992-09-30 Giancarlo Arici Rotary printing press for overprinting
WO1994016893A1 (fr) * 1993-01-19 1994-08-04 Eltromat Gesellschaft für Industrie-Elektronik mbH Dispositif permettant de determiner l'erreur de reperage entre des couleurs individuelles pendant l'impression polychrome effectuee sur une presse rotative a bande longue
EP0692377A3 (fr) * 1994-07-13 1997-02-05 Wifag Maschf Procédé et dispositif pour l'entraînement synchrone de composants d'une machine d'impression
DE4424752B4 (de) * 1994-07-13 2004-07-22 Maschinenfabrik Wifag Verfahren und Vorrichtung zum synchronisierten Antreiben von Druckmaschinenkomponenten
US7448321B2 (en) 2002-09-19 2008-11-11 Koenig & Bauer Aktiengesellschaft Drive devices and method for driving a processing machine
US7712415B2 (en) 2002-09-19 2010-05-11 Koenig & Bauer Aktiengesellschaft Drive devices and method for driving a processing machine
DE102017101812A1 (de) 2017-01-31 2018-08-02 Océ Holding B.V. Verfahren zur Passerregelung eines Drucksystems und Drucksystem

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

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Effective date: 19840731

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Inventor name: ERLING, STEFAN