EP0116139B1 - Device for moisture control in dependence upon the ink profile in an inking device of an offset printing press - Google Patents

Device for moisture control in dependence upon the ink profile in an inking device of an offset printing press Download PDF

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Publication number
EP0116139B1
EP0116139B1 EP19830112129 EP83112129A EP0116139B1 EP 0116139 B1 EP0116139 B1 EP 0116139B1 EP 19830112129 EP19830112129 EP 19830112129 EP 83112129 A EP83112129 A EP 83112129A EP 0116139 B1 EP0116139 B1 EP 0116139B1
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EP
European Patent Office
Prior art keywords
roller
measuring
inking
dampening
section
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
Application number
EP19830112129
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German (de)
French (fr)
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EP0116139A1 (en
Inventor
Willi Jeschke
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
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Heidelberger Druckmaschinen AG
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Filing date
Publication date
Priority claimed from DE19823247761 external-priority patent/DE3247761C2/en
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0116139A1 publication Critical patent/EP0116139A1/en
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Publication of EP0116139B1 publication Critical patent/EP0116139B1/en
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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
    • B41F33/0054—Devices for controlling dampening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices

Definitions

  • the invention relates to a device for color profile-dependent dampening solution control on a ink dampening system of offset printing presses.
  • a device for color profile-dependent dampening solution control on a ink dampening system of offset printing presses is known from the earlier application (Art. 54 (3)) EP-A-0 095 652.
  • each inking roller is also a water-carrying roller and the amount of water depends on the geometry of the inking unit, i.e. the position of the individual inking rollers, on the subject and on the local temperature conditions, it was determined that at the inlet of the plate in the area of the dampening unit the proportion of dampening solution in the ink layer is particularly high.
  • the object is achieved by the inventive features of the characterizing part of claim 1.
  • This has the advantage that an excessive amount of dampening solution can be determined separately for each zone and this is removed in a simple manner.
  • This solution is based on the knowledge that an increase in temperature on the surface of a hydrophilic measuring roller causes a higher evaporation of the dampening solution and thus a reduction in the proportion of dampening solution in the ink.
  • the subclaims contain advantageous further developments and enable sensitive adjustment and control of the various influences, such as heat and subject. Color etc.
  • the inking unit according to Figure 1 consists of a hydrophilic measuring roller, for. B. from a chrome or aluminum roller 1, which is partially inside a housing 2.
  • sensors 3 are assigned to the measuring roller 1, which extend over the entire length thereof. In this way, the behavior of the ink and the dampening solution is precisely recorded in all areas.
  • a heat source 4 is provided parallel to the measuring roller 1 in order to generate the desired temperature changes on the measuring roller 1.
  • the heat source 4 is connected to the housing 2 via a bracket 11.
  • the measuring roller 1 is in contact with the friction roller 6 via the inking roller 5.
  • This friction roller 6 also has contact with the two inking rollers 7 and 8, which in turn roll on the plate cylinder 12.
  • the sensors 3 and the heat source 4 are coupled to a controller 10 and a temperature control device 9. Due to the signal recording of the sensors 3, the pulse-shaped radiation of the heat source 4 is regulated by the temperature control device 9 via the controller 10.
  • the individual sensors 3 detect the proportion of the dampening medium in the color and thus the toning, which in turn is used to regulate the zone-by-zone heat influence.
  • the measuring roller 1 can be assigned to each rubber ink roller, but is advantageously provided in the area of the last inking roller 8.
  • FIG. 3 of a printing unit known per se shows the rubber cylinder 13 which is provided between the plate cylinder 12 and the printing cylinder 14.
  • the dampening unit 15, as seen in the direction of rotation of the plate cylinder 12, is arranged in front of the inking unit 16.
  • the measuring roller 1, which is assigned to the rubber ink roller 5 in the exemplary embodiment shown, could, for. B. also assign the rubber ink rollers 17 or 18.
  • the idealized behavior of the dampening solution on the measuring roller 1 is shown in FIG.
  • the on-time of the heat source 4 is changed zone by zone, according to the measurement results of the sensors 3. After the measuring roller 1 is always somewhat warmer than the plate cylinder 12, it also occurs earlier Tone.
  • the variables “time” are plotted on the abscissa and the states “m ” for radiators “on” and “n” for radiators “off ” are plotted on the abscissa.
  • Two states are recorded in area A, in which there is too little water in the individual zones on the measuring roller 1.
  • the heat source 4 is either not switched on at all or only for a short time
  • the three states shown here also differ in the operating time of the heat source 4, which can differ from zone to zone.
  • area C there is too much dampening water on the chrome roller 1, so that the switch-on time of the heat sources 4 is considerably extended.
  • the dampening solution supply is additionally reduced overall, in order to return the condition on the chrome roller 1 back to the region B. B. when processing special printing inks, also control superordinate and thus influence.
  • the supply of heat can also be regulated by varying the intensity of the radiation by modulating the frequency or the pulse width. It would be e.g. B. also conceivable to effect zone-by-zone cooling to maintain the ink / fountain solution balance. There would also be the possibility of installing this device at a different location in the inking unit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur farbprofilabhängigen Feuchtmittelregelung an einem Farbfeuchtwerk von Offsetdruckmaschinen gemäß dem Obergegriff des Anspruchs 1. Eine derartige Vorrichtung ist aus der älteren Anmeldung (Art. 54 (3)) EP-A-0 095 652 bekannt.The invention relates to a device for color profile-dependent dampening solution control on a ink dampening system of offset printing presses. Such a device is known from the earlier application (Art. 54 (3)) EP-A-0 095 652.

Bei modernen Offset-Rotationsdruckmaschinen ist man bemüht, das Farb-Wassergleichgewicht in jeder Zone über die Breite der Platte zu optimieren, um die Qualität des Druckbildes insgesamt zu steigern. Hierzu schlägt die Hauptanmeldung bereits zwei Lösungen vor, mit denen, über die Maschinenbreite gesehen, eine möglichst gleiche Farb-Wasseremulsion erreicht wird, wobei auch die Anlaufbedingungen der Maschine positiv beeinflußt werden. Nachdem davon auszugehen ist, daß jede Farbwalze auch eine wasserführende Walze ist und die Wassermenge durch die Geometrie des Farbwerks, also die Lage der einzelnen Farbwalzen vom Sujet und von den örtlichen Temperaturverhältnissen abhängig ist, wurde ermittelt, daß am Einlauf der Platte im Bereich des Feuchtwerkes der Feuchtmittelanteil in der Farbschicht besonders hoch ist. Dies ist deshalb verständlich, weil in diesem Bereich auch ein besonders hohes Angebot an Feuchtmittel gegeben ist. Weiterhin hat sich aber gezeigt, daß auch am Auslauf der Platte, d. h. in Drehrichtung des Plattenzylinders gesehen, im Bereich der letzten Auftragwalze in der Farbe ein erhöhter Feuchtmittelanteil gegeben ist.In modern offset rotary printing machines, efforts are made to optimize the ink-water balance in each zone across the width of the plate in order to increase the overall quality of the printed image. For this purpose, the main application already suggests two solutions with which, when viewed across the machine width, the same ink-water emulsion is achieved, whereby the starting conditions of the machine are also positively influenced. After it can be assumed that each inking roller is also a water-carrying roller and the amount of water depends on the geometry of the inking unit, i.e. the position of the individual inking rollers, on the subject and on the local temperature conditions, it was determined that at the inlet of the plate in the area of the dampening unit the proportion of dampening solution in the ink layer is particularly high. This is understandable because there is a particularly high supply of dampening solutions in this area. Furthermore, it has been shown that also at the outlet of the plate, ie. H. seen in the direction of rotation of the plate cylinder, in the area of the last applicator roller there is an increased proportion of dampening solution in the ink.

Dies führt zu der Erkenntnis, daß Feuchtmittelregelungen im Bereich des Feuchtwerkes und auch auf den dem Feuchtwerk nachgeschalteten Farbwerkwalzen teilweise kompensiert werden. Deshalb ist es Aufgabe der Erfindung, neben der üblichen zonenweisen Feuchtmittelregulierung im Feuchtwerk eine zusätzliche Regelung der in der Farbe enthaltenen Feuchtmittelmenge im Bereich des Farbwerkes durchzuführen, mit der unter Verwendung von einfachen Mitteln eine zonenweise Beeinflussung der Feuchtmittelmenge durchgeführt werden kann.This leads to the realization that dampening solution controls in the area of the dampening unit and also on the inking unit rollers downstream of the dampening unit are partially compensated for. Therefore, it is an object of the invention to carry out, in addition to the customary zone-by-zone dampening solution regulation in the dampening unit, an additional regulation of the amount of dampening solution contained in the ink in the area of the inking unit, with which simple area means can be used to influence the amount of dampening solution.

Die Aufgabe wird durch die erfinderischen Merkmale des Kennzeichens des Anspruchs 1 gelöst. Hiermit wird der Vorteil erreicht, daß für jede Zone getrennt ein Zuviel an Feuchtmittel festgestellt werden kann und dieses auf einfache Weise beseitigt wird. Dieser Lösung liegt die Erkenntnis zugrunde, daß eine Temperaturerhöhung auf der Oberfläche einer hydrophilen Meßwalze eine höhere Verdunstung des Feuchtmittels bewirkt und somit eine Reduzierung des Feuchtmittelanteils in der Farbe. Die Unteransprüche beinhalten vorteilhafte Weiterbildungen und ermöglichen eine feinfühlige Anpassung und Beherrschung der verschiedenen Einflüsse, wie Wärme, Sujet. Farbe usw.The object is achieved by the inventive features of the characterizing part of claim 1. This has the advantage that an excessive amount of dampening solution can be determined separately for each zone and this is removed in a simple manner. This solution is based on the knowledge that an increase in temperature on the surface of a hydrophilic measuring roller causes a higher evaporation of the dampening solution and thus a reduction in the proportion of dampening solution in the ink. The subclaims contain advantageous further developments and enable sensitive adjustment and control of the various influences, such as heat and subject. Color etc.

Die Erfindung wird anhand der Zeichnungen in der folgenden Beschreibung näher erläutert.The invention is explained in more detail with reference to the drawings in the following description.

Es zeigen schematisch :

  • Figur 1 ein Farbwerk nach der Erfindung mit einer Zusatzwalze,
  • Figur 2 eine Einrichtung zum Messen und zur Temperaturveränderung an der Meßwalze,
  • Figur 3 eine Seitenansicht eines Druckwerkes und
  • Figur 4 unterschiedliche Feuchtmittelanteile auf den Farbwerkswalzen.
They show schematically:
  • FIG. 1 an inking unit according to the invention with an additional roller,
  • FIG. 2 shows a device for measuring and for changing the temperature on the measuring roller,
  • Figure 3 is a side view of a printing unit and
  • Figure 4 different dampening solution proportions on the inking rollers.

Das Farbwerk gemäß Figur 1 besteht aus einer hydrophilen Meßwalze, z. B. aus einer Chrom-oder Aluminiumwalze 1, die sich teilweise innerhalb eines Gehäuses 2 befindet. Im Innenraum des Gehäuses 2 sind Sensoren 3 der Meßwalze 1 zugeordnet, die sich über die gesamte Länge derselben erstrecken. Hiermit wird in allen Bereichen das Verhalten der Farbe und des Feuchtmittels genauestens erfaßt. Ferner ist eine Wärmequelle 4 parallel zur Meßwalze 1 vorgesehen, um die gewünschten Temperaturveränderungen an der Meßwalze 1 zu erzeugen. Die _Wärmequelle 4 ist über eine Halterurig 11 mit dem Gehäuse 2 verbunden. Über die Farbwalze 5 steht die Meßwalze 1 mit der Reiberwalze 6 in Kontakt. Diese Reiberwalze 6 hat außerdem Kontakt mit den beiden Farbauftragswalzen 7 und 8, die wiederum auf dem Plattenzylinder 12 abrollen.The inking unit according to Figure 1 consists of a hydrophilic measuring roller, for. B. from a chrome or aluminum roller 1, which is partially inside a housing 2. In the interior of the housing 2 sensors 3 are assigned to the measuring roller 1, which extend over the entire length thereof. In this way, the behavior of the ink and the dampening solution is precisely recorded in all areas. Furthermore, a heat source 4 is provided parallel to the measuring roller 1 in order to generate the desired temperature changes on the measuring roller 1. The heat source 4 is connected to the housing 2 via a bracket 11. The measuring roller 1 is in contact with the friction roller 6 via the inking roller 5. This friction roller 6 also has contact with the two inking rollers 7 and 8, which in turn roll on the plate cylinder 12.

Wie in Figur 2 im einzelnen gezeigt ist, sind die Sensoren 3 und die Wärmequelle 4 mit einer Steuerung 10 und einem Temperaturregelgerät 9 gekoppelt. Durch die Signalaufnahme der Sensoren 3 wird über die Steuerung 10 die impulsförmige Strahlung der Wärmequelle 4 mittels des Temperaturregelgerätes 9 reguliert. Die einzelnen Sensoren 3 erfassen den Anteil des Feuchtmitteis in der Farbe und damit das Tonen, was wiederum zur Regelung der zonenweisen Wärmebeeinflussung ausgenutzt wird.As shown in detail in FIG. 2, the sensors 3 and the heat source 4 are coupled to a controller 10 and a temperature control device 9. Due to the signal recording of the sensors 3, the pulse-shaped radiation of the heat source 4 is regulated by the temperature control device 9 via the controller 10. The individual sensors 3 detect the proportion of the dampening medium in the color and thus the toning, which in turn is used to regulate the zone-by-zone heat influence.

Bevor es an dem Plattenzylinder 12 überhaupt zum Tonen kommt oder die Wassermarkengrenze erreicht ist, wird schon eine Regelung des Feuchtmittels vorgenommen. Die Meßwalze 1 läßt sich jeder Gummi-Farbwalze zuordnen, ist aber vorteilhaft im Bereich der letzten Farbauftragwalze 8 vorgesehen.Before the plate cylinder 12 is even toned or the water mark limit is reached, the dampening solution is regulated. The measuring roller 1 can be assigned to each rubber ink roller, but is advantageously provided in the area of the last inking roller 8.

Die in Fig. 3 dargestellte Übersicht eines an sich bekannten Druckwerks zeigt den Gummizylinder 13, der zwischen dem Plattenzylinder 12 und dem Druckzylinder 14 vorgesehen ist. Das Feuchtwerk 15 ist, in Drehrichtung des Plattenzylinders 12 gesehen, vor dem Farbwerk 16 angeordnet. Die Meßwalze 1, die im gezeigten Ausführungsbeispiel der Gummi-Farbwalze 5 zugeordnet ist, ließe sich z. B. auch den Gummi-Farbwalzen 17 oder 18 zuordnen.The overview shown in FIG. 3 of a printing unit known per se shows the rubber cylinder 13 which is provided between the plate cylinder 12 and the printing cylinder 14. The dampening unit 15, as seen in the direction of rotation of the plate cylinder 12, is arranged in front of the inking unit 16. The measuring roller 1, which is assigned to the rubber ink roller 5 in the exemplary embodiment shown, could, for. B. also assign the rubber ink rollers 17 or 18.

Das idealisierte Verhalten des Feuchtmittels auf der Meßwalze 1. ist in Figur 4 dargestellt. Entsprechend der vorhandenen Wassermenge wird zonenweise die Anschaltdauer der Wärmequelle 4, entsprechend den Meßergebnissen der Sensoren 3, verändert. Nachdem die Meßwalze 1 immer etwas wärmer als der Plattenzylinder 12 ist, kommt es bei dieser somit auch früher zum Tonen. In den in Fig. 3 dargestellten unterschiedlichen Zuständen sind auf den Abszissen die Variablen « Zeit und auf den Ordinaten die Zustände « m " für Strahler « an " und « n » für Strahler « aus " aufgetragen, Im Bereich A sind zwei Zustände aufgezeichnet, bei denen in den einzelnen Zonen zu wenig Wasser auf der Meßwalze 1 vorhanden ist. Entsprechend wird die Wärmequelle 4 entweder gar nicht oder nur kurzzeitig angeschaltet. Gleichzeitig wird die Feuchtmittelzufuhr insgesamt erhöht und als Alternative auch die Farbwerkskühlung verstärkt. Der Bereich B gibt den Normalzustand der Feuchtmittelzufuhr, in Abhängigkeit vom Sujet, von Der Maschinenerwärmung und anderen Faktoren wieder. Auch die hier dargestellten drei Zustände unterscheiden sich in der Einschaltdauer der Wärmequelle 4, die zonenweise unterschiedlich sein kann. Auch hier kommt es bei angeschalteten Strahlern zum Tonen auf der Chromwalze 1. Durch die inzwischen erreichte Maschinenerwärmung wird das Gleichgewicht zwischen Farbe und Feuchtmittel alleine durch die Anschaltdauer der Wärmequelle 4 geregelt. Im Bereich C befindet sich auf der Chromwalze 1 zuviel Feuchtwasser, so daß sich die Anschaltdauer der Wärmequellen 4 wesentlich verlängert. Gleichzeitig wird aber zusätzlich noch die Feuchtmittelzufuhr insgesamt reduziert, um den Zustand auf der Chromwalze 1 wieder in den Bereich B zurückzuführen Hierbei läßt sich die Wärmebeeinflussung im Bereich B, z. B. bei Verarbeitung von speziellen Druckfarben, auch übergeordnet steuern und damit beeinflussen.The idealized behavior of the dampening solution on the measuring roller 1 is shown in FIG. Depending on the amount of water present, the on-time of the heat source 4 is changed zone by zone, according to the measurement results of the sensors 3. After the measuring roller 1 is always somewhat warmer than the plate cylinder 12, it also occurs earlier Tone. In the different states shown in FIG. 3, the variables “time” are plotted on the abscissa and the states “m ” for radiators “on” and “n” for radiators “off ” are plotted on the abscissa. Two states are recorded in area A, in which there is too little water in the individual zones on the measuring roller 1. Accordingly, the heat source 4 is either not switched on at all or only for a short time The three states shown here also differ in the operating time of the heat source 4, which can differ from zone to zone. Here, too, there is toning on the chrome roller 1 when the radiators are switched on. Due to the warming of the machine, the balance between color and un d dampening solution is regulated solely by the duration of the heat source 4. In area C there is too much dampening water on the chrome roller 1, so that the switch-on time of the heat sources 4 is considerably extended. At the same time, however, the dampening solution supply is additionally reduced overall, in order to return the condition on the chrome roller 1 back to the region B. B. when processing special printing inks, also control superordinate and thus influence.

Diese Ausführungsform stellt keineswegs die einzig mögliche dar. Die Wärmezufuhr kann auch geregelt werden durch Variation der Intensität der Strahlung durch Modulation der Frequenz oder der Impulsbreite. Es wäre z. B. auch denkbar, ein zonenweises Abkühlen zur Aufrechterhaltung der Farb-/Feuchtmittelbalance zu bewirken. Außerdem bestände die Möglichkeit, diese Einrichtung an einer anderen Stelle des Farbwerks anzubringen.This embodiment is by no means the only possible one. The supply of heat can also be regulated by varying the intensity of the radiation by modulating the frequency or the pulse width. It would be e.g. B. also conceivable to effect zone-by-zone cooling to maintain the ink / fountain solution balance. There would also be the possibility of installing this device at a different location in the inking unit.

Claims (7)

1. Device for ink profile-dependent regulation of a dampening medium in an inking unit (16) of offset printing machines, said inking unit supplying to the plate cylinder (12) a uniformly thick film of an inking/dampening medium over the width of the printing forme, comprising a hydrophilic measuring roller (1) being in connection with one of the inking rollers (5, 17, 18), a measuring device (3), in the area of said measuring roller (1). measuring section-by-section over the width of said measuring roller the extent of wetting on the outer cylindrical surface of said measuring roller, a special device for varying section-by-section the proportion of the dampening medium in the ink film and a control part for converting the signals measured by said measuring device into adjustment commands and transmitting them to said device for varying section-by-section the proportion of the dampening medium in the ink film, wherein the hydrophilic measuring roller (1) cooperates with a rubber-covered inking roller (5, 17. 18) for regulating the amount of dampening medium in the inking unit (16), and wherein through the intermediary of the temperature varying on the surface of the hydrophilic measuring roller (1) the amount of dampening medium can be varied in the individual zones or over the entire width by means of the measuring signals so that the thickness of the dampening medium film at the measuring roller (1) and thus at the inking roller (5, 17, 18) can be influenced.
2. Device according to Claim 1, wherein the hydrophilic measuring roller (1) cooperates with the rubber-covered inking roller (5) in the area of the last applicator roller (8), and wherein, as viewed in rotary direction of the rubber-covered inking roller, there are provided sensors (3) for measuring the dampening medium section-by-section after the contact location with the rubber-covered inking roller (5) bearing the inking/dampening-medium profile and, after said sensors, there are arranged heat sources (4) acting zone-by-zone.
3. Device according to Claims 1 and 2, wherein the hydrophilic measuring roller (1) is connected to a temperature-regulating device, preferably a cooling device.
4. Device according to Claims 1 and 2, wherein the rubber-covered inking roller (5) cooperating with the hydrophilic measuring roller (1) engages with a distributor roller (6).
5. Device according to Claims 1 and 2, wherein the rubber-covered inking roller (5) which cooperates with the hydrophilic measuring roller (1) engages with the distributor roller (6) supplying the last applicator roller (8), as viewed in direction of rotation of the plate cylinder (12).
6. Device according to Claims 1 and 2, wherein the sensors (3) of the measuring device influence the amount of dampening medium supplied by the dampening unit (15), parallel to influencing the heat source (4), so that the extent of wetting on the measuring roller (1) is increased or decreased.
7. Device according to Claims 1 and 2, wherein the sensors (3) of the measuring device lengthen or shorten the pulse-like switched-on time of the heat sources (4) through the intermediary of a control device (10) and timing members in case of a deviating amount of dampening medium.
EP19830112129 1982-12-23 1983-12-02 Device for moisture control in dependence upon the ink profile in an inking device of an offset printing press Expired EP0116139B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3247761 1982-12-23
DE19823247761 DE3247761C2 (en) 1982-06-02 1982-12-23 Device for dampening solution management in an offset printing unit

Publications (2)

Publication Number Publication Date
EP0116139A1 EP0116139A1 (en) 1984-08-22
EP0116139B1 true EP0116139B1 (en) 1986-06-18

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EP19830112129 Expired EP0116139B1 (en) 1982-12-23 1983-12-02 Device for moisture control in dependence upon the ink profile in an inking device of an offset printing press

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EP (1) EP0116139B1 (en)
JP (1) JPS59120459A (en)
DK (1) DK564783A (en)
ES (1) ES8406297A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4864925A (en) * 1987-09-28 1989-09-12 Rockwell International Corporation Simplified lithography using ink and water admixtures
DE4244500A1 (en) * 1992-12-30 1994-07-07 Heidelberger Druckmasch Ag Process for supplying dampening solution
WO1999048693A1 (en) * 1998-03-23 1999-09-30 Goss Graphic Systems, Inc. Method and apparatus for controlling a dampener of a lithographic printing press
DE102013009466A1 (en) * 2012-07-04 2014-01-09 Heidelberger Druckmaschinen Ag Method for adjustment of dampening medium amount in printing machine for offset printing of image, involves computing medium amount based on measurement value and relationship of processor, and adjusting medium amount in dampening device
CN103358663B (en) * 2013-07-09 2015-03-11 上海光华印刷机械有限公司 Arranging structure of ink painting system of printer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2214721B1 (en) * 1972-03-25 1973-06-14 Heidelberger Druckmaschinen Ag, 6900 Heidelberg PROCESS AND DEVICE FOR AUTOMATIC ADJUSTMENT OF FLUCTUATIONS IN THE PAINT AND MOISTURE FLUID ON OFFSET MACHINES
DE2736663C3 (en) * 1977-08-13 1985-05-15 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Device for determining the moisture and color balance in offset printing units
DE2931579C2 (en) * 1979-08-03 1982-11-11 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Device for zonal regulation of the dampening solution supply

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JPH0376671B2 (en) 1991-12-06
ES527317A0 (en) 1984-08-01
ES8406297A1 (en) 1984-08-01
DK564783A (en) 1984-06-24
JPS59120459A (en) 1984-07-12
DK564783D0 (en) 1983-12-08
EP0116139A1 (en) 1984-08-22

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