EP0208282A2 - Procédé et dispositif pour mesurer la position relative de marques de repérage, marques de référence et marques de contrôle pour la mise en registre - Google Patents

Procédé et dispositif pour mesurer la position relative de marques de repérage, marques de référence et marques de contrôle pour la mise en registre Download PDF

Info

Publication number
EP0208282A2
EP0208282A2 EP86109203A EP86109203A EP0208282A2 EP 0208282 A2 EP0208282 A2 EP 0208282A2 EP 86109203 A EP86109203 A EP 86109203A EP 86109203 A EP86109203 A EP 86109203A EP 0208282 A2 EP0208282 A2 EP 0208282A2
Authority
EP
European Patent Office
Prior art keywords
register
screen
pulses
printing cylinder
oscilloscope
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Withdrawn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
EP86109203A
Other languages
German (de)
English (en)
Other versions
EP0208282A3 (fr
Inventor
Hans Dipl -Ing. Schaudt
Udo Ing.Grad. Rieber
Werner Schneider
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0208282A2 publication Critical patent/EP0208282A2/fr
Publication of EP0208282A3 publication Critical patent/EP0208282A3/fr
Withdrawn legal-status Critical Current

Links

Images

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 a method for measuring the relative position of register mark pulses which can be detected in each case with measuring sensors, optionally reference pulses and blanking signals per revolution of printing cylinders for register control of rotary printing presses by means of an oscilloscope, and to a device for carrying out the method.
  • Multi-color prints are produced with gravure printing machines by overprinting single-color partial images.
  • a measuring mark is printed with each partial image.
  • These register marks are detected by photoelectric scanning devices and applied to the register controller, which corrects the position of the partial images via adjusting devices.
  • Each brand newly printed for a drawing file is applied before the existing brands in the subsequent color scheme.
  • Blanking signals are generated to lock the register controller for processing the register mark pulses repeal.
  • the simultaneous determination of two register marks to be compared with one another means a register error zero. Differences in time when determining the register marks to be compared with one another indicate a register error. The time difference is processed into an actuating signal, taking into account the web speed, which controls actuators for changing the paper path length between two printing units or the phase position of the printing cylinder.
  • An oscilloscope can be connected in parallel to the register regulators and displays the signals of the scanning devices on the picture tube. Essentially the following is examined with the oscilloscope: - Checking the path sensors (scanning device) During operation, the web sensors become dirty with color mist, which can lead to an inadmissible drop in the signal amplitudes. - Visual check whether the mark is in the permissible measurement window area. - Search for print marks at the start of production.
  • Analog oscilloscopes are used for these investigations.
  • the oscilloscope is usually triggered by a pulse that leads the measuring pulses by a small amount (e.g. 2 mm).
  • This so-called blanking pulse is usually generated by the register controller and enables measurement at the register controller.
  • the deflection speed is adapted to the changing machine speed in some oscilloscopes. Due to the variable deflection speed, the image brightness changes. This usually has to be adjusted manually.
  • the oscilloscope To display the path mark of the printing unit and its comparison mark, the oscilloscope must have at least two beams. It is also possible to use oscilloscopes that represent the measurement window on a third beam. It is also possible to insert the measurement window signal into one of the two beams for the path probe signals.
  • the invention is based on the object of further developing the method described in the introduction in such a way that even at low printing speeds without an increase in operating effort, the display is as good and accurate as that of higher ones Printing speeds is reached.
  • the object is achieved by the measures described in claim 1.
  • the digital image repetition memory can be used to generate a still image for all possible speeds, even at very low speeds.
  • the image brightness is not affected. It is practically only one turn, e.g. B. at slow speed, necessary to enter the measurement data in the frame buffer.
  • the relative position of register mark pulses, possibly reference pulses, and blanking signals can then be determined on the screen.
  • the image brightness does not need to be adjusted because, in contrast to the analog oscilloscope, the refresh rate remains the same.
  • the blanking signals of the measuring value transmitters for the register mark pulses, the reference pulse generator and the blanking signal generator are preferably read into the image repetition memory for a full revolution of the respective printing cylinder.
  • the brand search can be carried out without delay, regardless of the printing speed. When searching for a brand, the position of the measuring window is no longer changed, but the image memory is searched.
  • the relative positions of the register mark pulses or reference pulses and blanking signals shown in different tracks on the screen can expediently be shifted independently of one another on the screen with reference to a scale using shift signals which can be actuated by input elements.
  • the various impulses and signals can therefore be brought on the screen into their position suitable for the recording of the pressure.
  • the difference between the actual position and the target position of the pulses and signals can be seen on the scale.
  • the clarity of the display on the screen is further improved if a circle is also shown that is assigned to the respective printing cylinder.
  • the two areas are displayed with different time scales in the form of sectors that have different brightness or colors. If the section is moved, the corresponding sector on the circle also moves.
  • the area with the stretched time scale is e.g. B. shown lighter.
  • the position of the fictitious cylinder impulse is indicated by a wedge pointing at the circle.
  • An apparatus for performing the method described in claims 1 to 7 is according to the invention that the transducers for the register mark pulses or a reference pulse and the blanking signal are applied to an analog-digital converter via a multiplexer, each of which passes a predetermined distance after passing of the printing cylinder on the respective measuring transducer can be actuated, and that the digital values output by the analog-digital converter can be stored in the cycle of the switching of the multiplexer in "an image repetition memory which is connected via a bus to a display device and a processor.
  • the processor controls the one hand Saving the data in the image repetition memory and, on the other hand, reading out the data for the purpose of display on the screen.
  • the analog-digital converter is preferably provided with a variable reference or with an adjustable preamplifier.
  • the amplification of the measured values in the ordinate direction can thus be set on the screen to a desired level.
  • a rate multiplier is provided for actuating the multiplexer, the rate multiplier being connected on the input side to a clock generator and to a comparator, at the inputs of which the setpoint value of the samples per revolution of the printing cylinder and the actual values of the Samples per revolution containing counter memory are placed.
  • the output of the rate multiplier acts on the counter input of a counter, the content of which can first be read into the counter memory after each rotation of the printing cylinder and can then be deleted for the start of the count.
  • a pulse can be generated with a pulse generator.
  • the display device can expediently be switched over either to display device operation and digital storage oscilloscope operation.
  • the monitor has a control panel with function keys, a numeric keypad, cursor keys, an alpha, an oscilloscope and a print key.
  • the commands in particular can be via the control panel: delete screen, delete screen from cursor, delete cursor line, cursor home position, cursor save position, cursor absolute addressing, switch on inversion, switch on highlighting, switch off inverting and highlighting, autorepeat on and off, horizontal tab, switch to ASCII mode or graphic mode.
  • a time block is provided for displaying the date and time.
  • the display device is connected to the refresh memory, which contains the data to be displayed.
  • a display window on the digital oscilloscope can preferably be set, with which the values obtained in each revolution of the printing cylinder are searched as with a magnifying glass.
  • the display on the screen in the horizontal direction is divided into three areas, namely an area on the right and left edge of the picture and a time-stretched area in the center of the picture.
  • the impulses and the measurement window are displayed in grid lines due to the circumstances of the monitor.
  • a grid line in the vertical direction on the screen corresponds to an input voltage of a certain size on the analog-to-digital converter.
  • the display is controlled by the processor, preferably a microprocessor. Due to the gathered time scale in the side areas and the enlarged time scale in the middle area of the screen, on the one hand an accurate representation of the measuring area and on the other hand a large possible overview of the conditions present at the respective pressure cylinder rotation is achieved.
  • Both the horizontal and the vertical display is done by means of a scale grid, which adjusts itself automatically when the scale changes, controlled by the processor.
  • a blanking area is shown on the screen with reference to the measurement window. If the printing cylinder is set correctly, the register mark pulses and possibly the reference mark pulses must be within the blanking range. The mutual position of the impulses and their position in relation to the blanking area can be checked on the screen. If necessary, readjustment with an adjustment, for example the rotational position of the printing cylinder, is possible. It is advisable to display the number of the respective printing unit, the position of the display window and the measurement window and the size of the measurement window at the bottom of the screen.
  • a web scanner 1 contains photoelectric receivers, by means of which marks which are located on a printing web are scanned in connection with optics which are not shown. Track switches are known per se.
  • a web scanner for scanning print marks applied to a web for register control is described in DE-PS 20 54 961.
  • An arrangement for regulating the amplitude of pulses generated during register regulation is also known (DE-AS 12 92 907).
  • Photoelectric register regulators with path sensors or cylinder keys are explained in more detail in the journal “AEG-Mitanderen” 48 (1958), pages 575 to 584.
  • the path scanner 1 emits two rows of pulses on two channels 2, 3, at least one of which is a register mark pulse 4, while the other reference pulses 5 or others Register mark impulses can be.
  • the nature of the impulses on channel 3 depends on whether the rail-cylinder method is used or the rail-rail method is used.
  • a pulse 7 is generated on a channel 6 once per revolution of the printing cylinder, not shown. The duration between two successive pulses 7 corresponds to the duration of a measurement window.
  • the three channels 2, 3 and 6 are each connected to an input of a multiplexer 8, the output of which is connected to an input of an analog-digital converter 9.
  • a digital image repetition memory 10 which is preferably a MOS-RAM, is connected to the analog-digital converter 9, hereinafter referred to as the A / D converter 9.
  • the output of the image repetition memory 10 is connected to a bus 11, to which a microprocessor 12, a monitor 13 with a video unit 14 and a monitor 15 and a control panel 16 are connected.
  • a digital-to-analog converter 17 is connected to the bus 11, the output of which is connected to an input of the A / D converter 9 in order to set its response threshold. With the digital-to-analog converter 17, the response threshold can be adapted to the particular circumstances of the path sensor 1.
  • the multiplexer 8 is controlled by a rate multiplier 18, one input of which is connected to a clock pulse generator 19, which generates a clock pulse sequence with a constant frequency.
  • the second input of the rate multiplier 18 is connected to a controller 20, which is preceded by a comparator 21 which forms the control deviation from a setpoint for the number of samples per revolution of the printing cylinder and an actual value output by a counter memory 22.
  • the counter memory 22 is connected to a counter 23, the counter input of which is connected to the output of the rate multiplier 18.
  • the counter 23 is periodically cleared by the pulses 7. Furthermore, the content 7 is transferred to the counter memory 22 by means of the pulses 7 before the counter 23 is erased.
  • control arrangement consisting of the elements 18 to 23 for controlling the multiplexer 8 an equal number of measured values are obtained per revolution of the printing cylinder, regardless of the speed.
  • the number the actuations of the multiplexer 8, which corresponds to the number of samples of the output signals of the web sensor 1 per revolution of the printing cylinder and the channel 6, is determined in the counter 23 and transferred to the counter memory 22.
  • the content of the counter memory 22 is subtracted from the target value. The difference acts on the multiplier input of the rate multiplier 18 via the controller 20 and causes it to generate the desired sampling frequency.
  • the display device 13 and the control panel 16 work together in a display device function.
  • the control panel 16 contains 9 function keys, a numeric keypad, four cursor keys and an alpha oscilloscope and print key each.
  • the display device 13 and the control panel 16 can also be used as a digital storage oscilloscope.
  • z In the display device mode, z.
  • the following functions can be performed: Clear screen, clear screen from cursor, clear cursor line, cursor home position, cursor save position, cursor absolute addressing, turn on inversion, turn on highlighting, turn off inverting highlighting, autorepeat on, autorepeat off , Horizontal tab, switch to ASCII mode, switch to graphic mode.
  • FIG. 1 shows the key 24 for switching the display device mode to the oscilloscope mode, in which only the nine function keys on the control panel 16 are effective.
  • the values sampled per revolution of the printing cylinder on channels 2, 3 and 6 are stored in image repetition memory 10.
  • the memory 10 is designed as a ring memory, the measured values for one revolution being stored in each case. To save storage space, it is sufficient to save only the rising and falling edge for the measurement window on channel 6.
  • the content of the image repetition memory 10 is displayed on the screen 15 by means of the video unit 14 in oscilloscope mode.
  • the display and additional information are displayed under the control of the microprocessor 12. It It is provided in the program of the microprocessor that the samples stored per revolution of the printing cylinder can be searched with a magnifying glass using a display window that can be shifted along the displayed samples.
  • the screen 15 is divided into three areas 25, 26, 27 in the horizontal direction.
  • the areas 25 and 27 are located on the left and right edge of the image, while the area 26 is in the center of the image.
  • the measured values are shown stretched in time, while the measured values in the areas 25, 26 are shown on a gathered scale.
  • the time stretching or time-lapse is carried out by a program of the microprocessor 12.
  • the selected division of the screen on the one hand provides an accurate representation of the measuring range and, on the other hand, the greatest possible overview of the peripheral areas.
  • Both the abscissa and the ordinate are provided with a scale grid which is automatically adapted by the microprocessor 12 when the scale is changed.
  • FIG. 2 shows the register mark pulse 4 and the reference pulse 5 of one beam each on the screen 15.
  • the measurement window 28 is shown with a further beam.
  • the beginning of the blanking area is indicated on the screen 15 by a vertical line 29.
  • the blanking area is offset from the start of the measurement window 28.
  • the information in connection with the grid is preferably related to the cylinder circumference of the respective printing cylinder.
  • a fixed position within the display window is represented by a line 30 above the scale grid.
  • the mark 30 is still displayed above the scale grid. This mark serves as a reference point for transferring position measurements to the register controller.
  • searching for a mark the display window is pivoted until the register mark impulse is above this mark. Now becomes the set key actuated, the position of the mark 30 (and thus also the position of the register pulse) is transmitted to the register controller.
  • FIG. 1 There is still a display line on the screen in which the position of the measuring window in relation to a reference point and the width of the measuring window are shown in figures.
  • the position of the display window is entered into the microprocessor 12 via the control panel 16.
  • the microprocessor can be queried for the position of the display panel.
  • a number is also shown in the display line. This number refers to the printing unit of the printing press whose register is to be checked.
  • the display can be carried out comfortably, with different scales and additional information.
  • the middle part of the image (time stretch area) is shown enlarged, while the border areas are shown in a gathered scale.
  • this provides an accurate representation of the measuring range and, on the other hand, the largest possible overview of the edge areas.
  • the blanking area is marked in the measuring window. With the correct setting, the path impulses must be in this position. The operator can use this display to check the position of the measuring window and, if necessary, that Readjust the measuring window (center).
  • the image shown on the screen normally only contains a section of a cylinder revolution.
  • the measurement window is usually in the display window.
  • the display window is pivoted over the entire revolution. If the path marks appear above the set position marked in the X-scale grid, the operator presses a set key.
  • the oscilloscope now reports this position to the register controller.
  • the register controller resets the measuring window so that the measuring window now comes to this point.
  • FIG. 3 shows on a screen 15 of the screen device 13 a circle 31 which is assigned to the printing cylinder. This circle is shown next to areas 25, 26 and 27. In areas 25, 26 and 27, the measured values are displayed on different time scales.
  • the circle 31 has two sectors 32, 33 which are displayed with different colors or brightnesses.
  • the area 33 corresponds to the area 26, while the area 32 corresponds to the areas and 27.
  • the areas 25, 26 and 27 indicate the entire circumference of the printing cylinder.
  • the area 26, which has an extended time scale compared to the areas 25 and 27, can be pivoted over the entire cylinder circumference of the printing cylinder.
  • Sector 33 shows the current position of the extended time range on the printing cylinder. When the region 26 is pivoted, the sector 33 is also pivoted synchronously.
  • a wedge 34 shows the position of the fictitious cylinder pulse, for. B. the reference pulse 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP86109203A 1985-07-10 1986-07-05 Procédé et dispositif pour mesurer la position relative de marques de repérage, marques de référence et marques de contrôle pour la mise en registre Withdrawn EP0208282A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853524594 DE3524594A1 (de) 1985-07-10 1985-07-10 Verfahren und anordnung zur messung der relativen lage von farbmarkenimpulsen, bezugsimpulsen und austastsignalen fuer die registerregelung
DE3524594 1985-07-10

Publications (2)

Publication Number Publication Date
EP0208282A2 true EP0208282A2 (fr) 1987-01-14
EP0208282A3 EP0208282A3 (fr) 1988-07-20

Family

ID=6275392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86109203A Withdrawn EP0208282A3 (fr) 1985-07-10 1986-07-05 Procédé et dispositif pour mesurer la position relative de marques de repérage, marques de référence et marques de contrôle pour la mise en registre

Country Status (2)

Country Link
EP (1) EP0208282A3 (fr)
DE (1) DE3524594A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0456006A1 (fr) * 1990-05-08 1991-11-13 Heidelberger Druckmaschinen Aktiengesellschaft Méthode et arrangement pour la recherche de fautes de repérage sur un produit imprimé muni de marques de repérages

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3811359C2 (de) * 1988-04-02 1994-06-16 Heidelberger Druckmasch Ag Vorrichtung zur Positionierung eines Meßkopfes für Passerabweichungen beim Offsetdruck
DE4218762C2 (de) * 1992-06-06 2002-04-18 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zum Ermitteln von Registerfehlern auf einem mehrfarbig bedruckten laufenden Druckerzeugnis mit Registermarken
DE4301272A1 (de) * 1993-01-19 1994-07-21 Eltromat Ges Fuer Ind Elektron Vorrichtung zur Bestimmung des Registerfehlers zwischen den einzelnen Farben beim Mehrfarbendruck in einer Langbahn-Rollenrotationsdruckmaschine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4318176A (en) * 1980-03-03 1982-03-02 Hurletronaltair, Inc. Computerized press controls

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4318176A (en) * 1980-03-03 1982-03-02 Hurletronaltair, Inc. Computerized press controls

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0456006A1 (fr) * 1990-05-08 1991-11-13 Heidelberger Druckmaschinen Aktiengesellschaft Méthode et arrangement pour la recherche de fautes de repérage sur un produit imprimé muni de marques de repérages

Also Published As

Publication number Publication date
DE3524594A1 (de) 1987-01-15
EP0208282A3 (fr) 1988-07-20

Similar Documents

Publication Publication Date Title
EP0884182B1 (fr) Procédé de regulation des operations effectuées par une machine d'impression
DE2253189C3 (de) Verfahren und Vorrichtung zur maschinellen Kontrolle der Farbdichte von auf eine laufende Bahn aufgebrachten Druckfarben
EP1843898B2 (fr) Procede de reperage
DE69720161T2 (de) Verfahren und Vorrichtung zur Überwachung der Druckqualität
DE3633855C2 (fr)
DE3148076C2 (fr)
DE10254836A1 (de) Verfahren und Vorrichtung zur Regelung des Registers einer Druckmaschine
DE60110344T2 (de) Instrument und Verfahren zum Vergleichen von Wellenformen
DE19910835C1 (de) Verfahren zur Regelung einer Schnittposition an einer bedruckten Bahn für eine Rollenrotationsdruckmaschine
EP0860276B1 (fr) Procédé et dispositif de contrôle de qualité
EP0208282A2 (fr) Procédé et dispositif pour mesurer la position relative de marques de repérage, marques de référence et marques de contrôle pour la mise en registre
DE3009907C2 (de) Speicheradressensignalgenerator für eine automatische Justiereinrichtung einer Fernsehkamera
DE2901980C2 (de) Einrichtung zum Steuern des Farbwerkes einer Bogenoffsetdruckmaschine
EP0637286B1 (fr) Dispositif permettant de determiner l'erreur de reperage entre des couleurs individuelles pendant l'impression polychrome effectuee sur une presse rotative a bande longue
DE19835303B4 (de) Verfahren zur Erzeugung und Auswertung einer Probegravur
DE2557944C3 (de) Anordnung zur Erzeugung von Austastsignalen für die Registerregelung
DE2648694C3 (de) Verfahren und Einrichtung zum Prüfen von Halbzeug
WO2000015434A1 (fr) Procede de gravure de cylindres d'impression
DE3340306C2 (de) Verfahren zum Betreiben eines Mehrkanal-Punktdruckers zum Ausdruck von Meßwerten auf einen Registrierstreifen und Mehrkanal-Punktdrucker zum Ausdruck von Meßwerten auf einen Registrierstreifen
DE4334967C2 (de) Verfahren und Vorrichtung zur Kontrolle der Aufzeichnungen von Plottern, Registriergeräten oder sonstigen, automatisch arbeitenden Schreib- oder Zeichenanlagen
DE2816790C2 (de) Steuerschaltung für Elektrophoresegeräte
DE7239816U (de) Laufende Bahn, welche zur maschinellen Messung der Farbdichte von auf sie aufge brachten Druckfarben geeignet ist
DE1763330A1 (de) Anordnung zum Messen des Registrierfehlers beispielsweise fuer Druckbogenschneidvorrichtungen
DE2018210A1 (en) Synchronising method for profile rolls
DE2826794A1 (de) Verfahren und vorrichtung zur umsetzung einer zweidimensionalen datenkurve in elektrische signale

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI NL SE

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890121

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHNEIDER, WERNER

Inventor name: RIEBER, UDO, ING.GRAD.

Inventor name: SCHAUDT, HANS, DIPL,-ING.