EP0143228A1 - Procédé et dispositif de réglage des organes de dosage des zones d'encrage d'un encrier - Google Patents

Procédé et dispositif de réglage des organes de dosage des zones d'encrage d'un encrier Download PDF

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Publication number
EP0143228A1
EP0143228A1 EP84110865A EP84110865A EP0143228A1 EP 0143228 A1 EP0143228 A1 EP 0143228A1 EP 84110865 A EP84110865 A EP 84110865A EP 84110865 A EP84110865 A EP 84110865A EP 0143228 A1 EP0143228 A1 EP 0143228A1
Authority
EP
European Patent Office
Prior art keywords
zone
sensors
template
color
assigned
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.)
Ceased
Application number
EP84110865A
Other languages
German (de)
English (en)
Inventor
Joachim Bernauer
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.)
Albert Frankenthal AG
Original Assignee
Albert Frankenthal 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 Albert Frankenthal AG filed Critical Albert Frankenthal AG
Publication of EP0143228A1 publication Critical patent/EP0143228A1/fr
Ceased legal-status Critical Current

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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
    • B41F33/0027—Devices for scanning originals, printing formes or the like for determining or presetting the ink supply

Definitions

  • the invention relates to a remote mode for setting, in particular for presetting, the metering elements assigned to the ink zones of an inking unit or the actuators assigned to them, preferably designed as zone screws, in which the color distribution is recorded zone by zone on a template and from this the metering elements or respectively are assigned to these assigned actuators, and goes according to a further inventive idea on a preferred device for performing this method.
  • a change in the color zone width would require changes in the design of the fiber optics and the integration devices assigned to them, that is, changes in the area of the so-called hardware, which required a great deal of time and capital.
  • the known arrangements therefore prove to be not simple and variable enough.
  • Another disadvantage is that skewing the template leads to incorrect information. A high effort must therefore be made to align the template and the drum, which can have a negative impact on the ease of use.
  • the template is transferred to a surface matrix of sensors that can be activated by light, that the sensors activated per color zone are recorded in number and that from the sum of the sensors activated per color zone, the associated color zones assigned manipulated variables are formed.
  • a transfer device assigned to a receiving device for the template can be provided, through which an image plate designed as a surface matrix of light-sensitive sensors can be acted upon, followed by an interrogation device, by means of which the number of sensors activated within predeterminable color zone limits can be detected and the respective associated actuator can be controlled is.
  • the measures according to the invention advantageously lead to digitization of the template.
  • the coarse screen image of the template that arises on the surface matrix can therefore be evaluated by software, which advantageously allows easy evaluation according to various aspects and results in a high degree of variability.
  • a change in the width of the ink zone advantageously only requires a change in the program, i. H. the software, but not the system, d. H. the hardware.
  • the advantages that can be achieved with the invention can therefore be seen in particular in excellent economy.
  • the template is not moved here during the exposure of the area matrix.
  • the zone alignment can therefore be easily carried out on the basis of the image edges, which ensures a high level of user-friendliness.
  • a frequency-selective transfer of the template to the surface matrix can advantageously take place.
  • the transmission device can be provided with a switchable or exchangeable frequency filter. This ensures that a multi-color template can be used in the case of multi-color printing.
  • a further expedient measure can consist in that the coarse screen image that is created when the area matrix is acted upon is transferred to a screen, which is possible in a simple manner due to the digitization that has taken place. This measure allows a visual check of the coarse screen image on the screen and a visual comparison of the coarse screen image with the template and with the actuating variables determined therefrom, which can also be made visible in the form of analog variables.
  • a further expedient further development of the superordinate measures can consist in the sensors of the surface matrix being designed as photodiodes. These are practically optoelectric converters, each of which emit a current corresponding to the incidence of light, which enables simple addition of the signals emitted by several sensors by means of simple parallel connections.
  • Another expedient measure can be that the surface matrix has sensor rows running parallel to the color zone boundaries. This enables the sensors to be clearly assigned to the different color zones.
  • the ink flow is adjusted by metering elements, such as scraper plates, ink take-up rollers, etc.
  • the color flow is adapted to the respective requirements across the width of the inking unit.
  • the working width of the machine is divided into several color zones each comprising a narrow strip, each of which is assigned an actuator approximately in the form of the zone screws 1 indicated in the drawing for the corresponding actuation of a metering element.
  • the zone screws 1 are driven by respectively assigned actuators 2.
  • the zone screws 1 are preset before starting the machine.
  • the required manipulated variable is determined on the basis of a template 3 corresponding to the print image to be produced.
  • template 3 can be a positive template, for example in the form of an original or a slide.
  • the template 3 is received on a holder, here in the form of a lighting table 4, with a suitable lighting direction is provided.
  • a lighting table 4 with a suitable lighting direction is provided.
  • incident light in the case of a slide with transmitted light.
  • the color zones 5 resulting in the production of a print image corresponding to the original 3 in the printing press are entered in the area of the lighting table.
  • the lighting table 4 is provided with a coordinate cross formed by stop bars 6. The ordinate of the coordinate cross runs parallel to the longitudinal extent of the color zones 5.
  • the holder formed by the lighting table 4 is assigned a transmission device 7, for example in the form of an electronic camera, through which the light emanating from the original 3 can be transmitted to an image plate, which is designed here as a carrier for a plurality of sensors 8 that can be activated by light, which are arranged in the form of a surface matrix 9 illustrated here by their grid lines.
  • a sensor 8 should be arranged in the area of each intersection of the grid lines.
  • the number of sensors 8 activated within the strips of the surface matrix 9 corresponding to the color zones 5 is therefore detected and converted into corresponding actuating signals for the zone screws 1 or the motors 2 driving them.
  • the area matrix 9 is followed by a query device 11.
  • the sensors 8 can simply be designed as photodiodes which emit a current when exposed to light. All sensors of the sensor rows running parallel to the color zone boundaries can be connected in parallel, as a result of which the currents emitted by the individual sensors 8 are added in a simple manner. In cases of this type, it is therefore sufficient if a query channel 12 leading to the query device 11 is provided for each sensor row. In some cases, however, it may prove expedient to query each individual sensor individually. In cases of this type, each sensor 8 is provided with a query channel connected to the query device 11.
  • the values obtained by the interrogation unit 11 and corresponding to the number of sensors 8 activated per row or, in the case of individual interrogation, to the operating state of the respective interrogated sensor 8 are fed into an addition device 13 arranged downstream of the interrogation device 11, which fed values added up until all sensor rows or individual sensors of a surface unit of the surface matrix 9 corresponding to a color zone are queried.
  • the resulting sum signal, which corresponds to the number of sensors 8 activated per color zone, is given to a downstream converter 14, which converts the given sum signal into a control signal, by means of which the actuator assigned to the color zone corresponding to the queried area unit of the area matrix 9 or to the latter assigned actuator 2 is controllable.
  • a pre-programmable microcomputer 15 is provided for the central control of the transmission device 7, the interrogation device 11, the addition device 13 and the converter 14.
  • the ink zone width can be programmed here. A change in the color zone width therefore only requires a change in the program to be processed by the microcomputer 15.
  • a frequency filter 16 that can be set to the frequencies of the colors involved in the printing is provided in the area of the transmission device 7, so that a separate raster image can be generated on the surface matrix 9 for each color.
  • the control of the frequency filter 16 and the corresponding activation of the outputs of the converter 14 leading to the zone screws of the individual inking units is also expediently carried out with the aid of the microcomputer 15 forming a central control unit.
  • the example on which the drawing is based assumes four ink zones per inking unit.
  • the converter 14 accordingly has four control outputs per inking unit, of which, for reasons of clarity, only the control outputs belonging to an inking unit and one indicates all other control outputs clearing control output are shown.
  • the number of available ink zones depends on the machine width and the respective print image and can therefore vary. If the number of ink zones is reduced compared to the number of existing zone screws, several zone screws can simply be assigned to a common ink zone and controlled in parallel.
  • these can be transmitted in analog form to a screen 17 together with the raster image.
  • This transmission can take place by radio.
  • suitable transmission cables leading from the screen 17 to the transmission device 7 or to the converter 14 are provided for this purpose.
  • the above explanations relate to the presetting of the zone screws 1.
  • a continuous regulation of the zone screws 1 can take place with the aid of a target / actual value comparison, the raster image that can be generated with the help of an original template on the surface matrix 9 being the target value and that taken from the current production
  • the raster image that can be generated on the surface matrix 9 forms the actual value.

Landscapes

  • Spectrometry And Color Measurement (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP84110865A 1983-09-21 1984-09-12 Procédé et dispositif de réglage des organes de dosage des zones d'encrage d'un encrier Ceased EP0143228A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833334019 DE3334019A1 (de) 1983-09-21 1983-09-21 Verfahren und vorrichtung zur einstellung der den farbzonen eines farbwerks zugeordneten dosierorgane
DE3334019 1983-09-21

Publications (1)

Publication Number Publication Date
EP0143228A1 true EP0143228A1 (fr) 1985-06-05

Family

ID=6209613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110865A Ceased EP0143228A1 (fr) 1983-09-21 1984-09-12 Procédé et dispositif de réglage des organes de dosage des zones d'encrage d'un encrier

Country Status (3)

Country Link
EP (1) EP0143228A1 (fr)
DE (1) DE3334019A1 (fr)
FI (1) FI843549L (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0442322A1 (fr) * 1990-02-10 1991-08-21 MAN Roland Druckmaschinen AG Procédé pour le réglage de la couleur et le préréglage par zones
DE4413230A1 (de) * 1994-04-15 1995-10-19 Heidelberger Druckmasch Ag Bedienpult für eine Druckmaschine
GB2299783A (en) * 1995-04-11 1996-10-16 Scitex Corp Ltd Printing press operator aide
US9580621B2 (en) 2013-09-09 2017-02-28 Dymax Corporation High temperature resistance, radiation curable maskant for metal substrates

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3804941A1 (de) * 1988-02-17 1989-08-31 Hell Rudolf Dr Ing Gmbh Verfahren und einrichtung zur erfassung von druckflaechendeckungsdaten
GB2217653B (en) * 1988-04-26 1992-10-14 Allen Bradley Int Control apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2148820A5 (fr) * 1971-08-04 1973-03-23 Marinoni
US4146798A (en) * 1976-03-12 1979-03-27 Tokyo Kikai Seisakusho, Ltd. Ink feed volume measuring device
DE2902868A1 (de) * 1978-02-09 1979-08-16 Polygraph Leipzig Vorrichtung zur bestimmung des druckenden flaechenanteiles von druckformen
EP0032535A1 (fr) * 1979-12-15 1981-07-29 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif de mesure opto-électronique de la surface d'impression d'une plaque d'impression offset ou d'une ébauche servant à la réalisation de la plaque d'impression offset
EP0096227A2 (fr) * 1982-06-03 1983-12-21 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif pour balayer un cliché d'impresssion

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1566263A (en) * 1975-09-22 1980-04-30 Toppan Printing Co Ltd Measuring optical characteristic
DE2947054A1 (de) * 1979-11-22 1981-05-27 Reinhard Mohn GmbH, 4830 Gütersloh Verfahren und vorrichtung zur bestimmung von soll-werten fuer die insbesondere automatische voreinstellung von druckmaschinen
DE3046417A1 (de) * 1980-12-10 1982-07-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Vorrichtung zur steuerung einer rotationsdruckmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2148820A5 (fr) * 1971-08-04 1973-03-23 Marinoni
US4146798A (en) * 1976-03-12 1979-03-27 Tokyo Kikai Seisakusho, Ltd. Ink feed volume measuring device
DE2902868A1 (de) * 1978-02-09 1979-08-16 Polygraph Leipzig Vorrichtung zur bestimmung des druckenden flaechenanteiles von druckformen
EP0032535A1 (fr) * 1979-12-15 1981-07-29 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif de mesure opto-électronique de la surface d'impression d'une plaque d'impression offset ou d'une ébauche servant à la réalisation de la plaque d'impression offset
EP0096227A2 (fr) * 1982-06-03 1983-12-21 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif pour balayer un cliché d'impresssion

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0442322A1 (fr) * 1990-02-10 1991-08-21 MAN Roland Druckmaschinen AG Procédé pour le réglage de la couleur et le préréglage par zones
DE4413230A1 (de) * 1994-04-15 1995-10-19 Heidelberger Druckmasch Ag Bedienpult für eine Druckmaschine
DE4413230C2 (de) * 1994-04-15 2003-11-20 Heidelberger Druckmasch Ag Vorrichtung zur Kontrolle einer Farbführung in einer Offsetrotationsdruckmaschine durch Verstellung zonal aufgeteilter Farbdosierelemente von einem Bedienpult
GB2299783A (en) * 1995-04-11 1996-10-16 Scitex Corp Ltd Printing press operator aide
GB2299783B (en) * 1995-04-11 1998-09-16 Scitex Corp Ltd Printing press operator aide
US9580621B2 (en) 2013-09-09 2017-02-28 Dymax Corporation High temperature resistance, radiation curable maskant for metal substrates

Also Published As

Publication number Publication date
DE3334019A1 (de) 1985-03-28
FI843549A0 (fi) 1984-09-11
FI843549L (fi) 1985-03-22

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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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17P Request for examination filed

Effective date: 19851115

17Q First examination report despatched

Effective date: 19861107

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Effective date: 19870502

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Inventor name: BERNAUER, JOACHIM