EP0000689A1 - Procédé et dispositif pour contrôler l'équilibre entre le liquide de mouillage et l'encre dans des dispositifs à imprimer en offset - Google Patents

Procédé et dispositif pour contrôler l'équilibre entre le liquide de mouillage et l'encre dans des dispositifs à imprimer en offset Download PDF

Info

Publication number
EP0000689A1
EP0000689A1 EP78100108A EP78100108A EP0000689A1 EP 0000689 A1 EP0000689 A1 EP 0000689A1 EP 78100108 A EP78100108 A EP 78100108A EP 78100108 A EP78100108 A EP 78100108A EP 0000689 A1 EP0000689 A1 EP 0000689A1
Authority
EP
European Patent Office
Prior art keywords
roller
measuring
measuring roller
dampening
ink
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Withdrawn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
EP78100108A
Other languages
German (de)
English (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
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
Priority to NL7815027A priority Critical patent/NL172218C/xx
Publication of EP0000689A1 publication Critical patent/EP0000689A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0063—Devices for measuring the thickness of liquid films on rollers or cylinders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
    • G01B11/0625—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating with measurement of absorption or reflection

Definitions

  • the invention relates to a device for monitoring the moisture and ink balance in offset printing units with a measuring roller lying in the fountain solution or ink flow, the liquid film thickness of which is measured.
  • DT-AS 2 412 234 it is known, for example, to measure the wet film thickness on the offset plate directly in front of the first inking roller using a reflection measurement method.
  • the measurement is carried out by illuminating the wetted printing plate with infrared light.
  • the reflection of the infrared light that occurs is not only dependent on the thickness of the wet film, but is also strongly influenced by the structure of the plate surface or the type of plate.
  • the results obtained can therefore differ considerably from one another with different offset plates and thus lead to misinterpretation of the measured values. So z. B. the gloss of some offset plates makes a wet film measurement impossible in this way.
  • the main disadvantage of measuring the wet film directly on the plate cylinder is that only the wet film is measured alone.
  • the color-water interaction is not sufficiently covered.
  • the ink rollers roll over the plate cylinder and thus also affect the wet film thickness on the non-printing areas when the fire film z. B. is measured after coloring; however, there is no information about the degree of water absorption in the inking unit. The moisture and color balance is therefore only insufficiently assessed.
  • the purpose of the invention is to measure the ink film and the wet film or their mutual behavior in order to determine the equilibrium at a point at which the harmful influences of the offset printing plate are eliminated by the reflections on the measuring device.
  • the technical object of the invention is to find a very economical, reliable measuring device that determines both the color film and the wet film with minimal effort and without being affected by the offset plate, without a detectable disturbance of the coloring taking place.
  • only a single measuring roller is provided, which is connected to a the dampening rollers can be adjusted, with at least certain areas of the outer surface of the measuring roller being made hydrophilic.
  • the invention makes use of the knowledge that essentially the wettability of a surface by the dampening solution determines the degree of ink displacement and therefore a single measuring roller can be used both for determining the ink supply and for measuring the dampening solution supply.
  • a particularly advantageous development of the invention consists in that the measuring roller bears simultaneously on an inking roller and on a dampening roller which also carries ink, the measuring roller itself being made of glass.
  • any material that can be wetted by ink and dampening solution can be used for the measuring roller. If the material is not transparent, measurements are made using the reflection method.
  • British Patent 1,226,487 already discloses the use of a transparent roller for determining the color film thickness in the transmitted light process, but there is no indication as to the measurement of the wet film.
  • a further development of the invention which detects the ink and .moisture film thickness with simple means is to mount the measuring roller so that it can pivot alternately on the last dampening roller and on the first inking roller and that the lateral surface of the measuring roller is axially displaceable by a non-wettable one Direction the area, e.g. B. an incision or field with low transparency is interrupted.
  • the change in wetting of the measuring roller is used for the measurement.
  • a clear correlation can be established between the ink or dampening layer thickness on the one hand and the number of revolutions of the measuring roller on the other hand until the wetting is no longer increasing completely.
  • a simple embodiment of the invention provides that the outer surface of the measuring roller has hydrophilic and oleophilic areas. For example, seen in the circumferential direction, half of the outer surface of the measuring roller each consist of hydrophilic and oleophilic material. At the same time, this measuring roller rests on an ink-carrying roller as well as on a dampening agent-carrying roller, the hydrophilic surface portions assuming the fountain solution and the oleophilic surface portions assuming the color. The wet film thickness is then measured by means of reflected rays with the aid of infrared detectors on the hydrophilic outer surface area and the color film thickness is measured with the help of a photo transistor on the oleophilic outer surface area.
  • the hydrophilic cladding area can consist, for example, of chromium, the oleophilic area of copper.
  • the dampening unit 4 consists of the dampening solution tank 6, the dampening unit 7, the dampening unit 8, the dampening unit 9, the first dampening roller 10 and the second dampening roller 11.
  • a measuring head 13 is arranged between the second dampening roller 11 and the first inking roller 12 of the inking unit 5. As shown in FIG. 2 in detail, there is a measuring roller 14 in this measuring head 13, the axis of rotation of which runs parallel to the axes of rotation 15 of the two dampening rollers and the inking rollers.
  • the measuring head 13 is arranged so that the contact pressure of the measuring roller 14 against the dampening roller 11 and the inking roller 12 can be adjusted.
  • the measuring roller 14 is made of glass or similar transparent material.
  • a radiation source 16 is located in its interior.
  • an infrared detector for the measuring beam 18 and another infrared detector for the comparison beam 19 are provided in the housing 17 of the measuring head 13. Both infrared detectors 18 and 19 have a filter 20 and 24 in front of them, viewed in the radial direction from the radiation source 16. A color transistor 21 for color determination is located between the two infrared detectors 18 and 19. The infrared detectors 18 and 19 can be acted upon by the rays of the radiation source 16 through the glass roller and through the filters 20 and 24 and the color transistor without the interposition of a filter.
  • An upper panel 22 and a lower panel 23 extend to a certain extent stood concentric to the glass measuring roller 14 and so shield the detectors against stray light. Both screens 22 and 23 are attached to the housing 14 of the measuring head 13.
  • the infrared detectors are electrically connected via an impedance converter 26 and computing amplifier 27 to a display device for displaying the wet film thickness.
  • the measurement signal of the phototransistor 21 is amplified by the amplifier 29 to a further display device 30 for the color.
  • the narrow-band interference filter 20 in front of the infrared detector 18 only allows a certain measuring beam from the radiation spectrum of the radiation source 16 to pass through. With increasing strength of the wet film the radiation intensity acting on the infrared detectors becomes lower and a resistance change is obtained. The resistance of the In. infrared detector also changes with the temperature of the environment and also the intensity of the radiation source 16 does not remain constant. one must create a reference potential for the measurements.
  • a comparison beam is provided with a wavelength that is only weakly absorbed by the water. This comparison beam impinges on the infrared detector 19 via the filter 24. Both beams - measuring beam and comparison beam - lie close together in the wavelength so that they experience the same change due to disturbances of the type mentioned, that is to say only the changes in layer thickness effectively change the measuring signal.
  • the output voltage of this computing amplifier 27 is proportional to the wet film thickness on the measuring roller 14 and is displayed in the display device 28 to the printer.
  • ink is transferred to the measuring roller 14 both via the inking roller 12 and via the dampening roller 11, whereby the intensity of the measurement signal is reduced.
  • the phototransistor 21 additionally arranged in the housing 17 of the measuring head 13 then supplies a signal measured in the immediate spectral range, which indicates the presence of color on the measuring roller via an amplifier 29 on a display device 30.
  • the measuring roller runs free of ink again.
  • the display device 30 now shows the absence of a color film on the surface of the measuring roller 14.
  • the display device 28 clearly shows the thickness of the new wet film.
  • the measuring roller 14 In the normal working position, the measuring roller 14 only measures the thickness of the wet film on the measuring roller equivalent to the wet film on the second dampening roller 11 and also indicates the toning if the dampening is too low. Experiments have shown that the ink acceptance on the measuring roller takes place simultaneously with the toning or even earlier than on the offset plate.
  • the printer can judge and regulate both the ink supply and the fountain solution supply.
  • the described embodiment according to FIG. 1 and FIG. 2 can undergo various modifications.
  • the infrared radiation source and the infrared detectors can be interchanged locally for recording the measurement signal.
  • the measuring roller 14 is preferably made of a material with a large transmission for infrared rays and has only slight deviations in shape. A quartz glass is best suited for the measuring roller.
  • An AC voltage amplifier is also possible to amplify the measurement signal, although the beams then have to be chopped.
  • FIG. 3 Another embodiment of the invention shows.
  • the transparent measuring roller 14 is rotatably mounted on a pivot lever 31 which is pivotable about the pivot axis 32 such that the measuring roller 14 can be placed either on the dampening roller 11 or on the inking roller 12.
  • the infrared detectors 18 and 19 and the filters 20 and 24 in front of them are attached to the swivel lever.
  • the radiation source 16 is located within the measuring roller 14.
  • the infrared detectors 18 and 19 are connected to the display device 16 in an electrically linked manner via the impedance converter 26 and the computing amplifier 27 in the same way as described in the embodiment according to FIG. 2.
  • the jacket of the measuring roller 14 has a channel 33 which extends in the axial direction, as a result of which the jacket surface of the measuring roller 14 which receives the wet or colored film is interrupted.
  • the channel is covered with an opaque, i.e. radiation-opaque layer.
  • the measuring roller 14 is initially in the lower working position, i. H. , It rests on the second dampening roller 11. Your. The lateral surface is therefore wetted with a dampening film corresponding to the steady state with a certain layer thickness. If you now swivel the measuring roller 14 into the upper working position and place it against the first inking roller, it is no longer supplied with dampening solution from the dampening unit, the remaining dampening solution film is taken up by the inking roller 12 and transported away. After a certain time or number of revolutions of the measuring roller, the moisture film on the measuring roller is degraded to the extent that the ink begins to color due to the color offered. After a few more revolutions, it has progressed to such an extent that a new steady state has occurred with a constant color layer thickness.
  • the working method of the measuring device according to FIG. 2 is used for better understanding. Decreases there for some reason - e.g. B. by evaporation of the dampening solution film due to higher temperatures - the wet film thickness, then the measuring signal indicating the wet film thickness takes z. B. from curve 34 in FIG. 4. If the thickness of the wet film decreases too much, ie up to a critical threshold, the offset plate begins to tone. At the same time, the measuring roller 14 is supplied with ink via the dampening roller 11 and the inking roller 12. The measurement signal rises again, e.g. B. with a course according to curve 35 of FIG. 4.
  • the curve 34, 35 shows a transition point. Practical tests have shown that the changeover point coincides with the start of toning on the offset plate or even before it lies. The rise in the measurement signal according to curve 35 could lead to a misinterpretation with regard to a again increasing wet film thickness if the phototransistor 21 (FIG. 2) via the amplifier 29 in the display device 20 did not simultaneously report the presence of color, i.e. toning.
  • a similar measurement signal curve profile is obtained if, in the embodiment according to FIG. 3, the measuring roller 14 changes from the second dampening roller 11 to the first inking roller 12. Even then, a changeover point U indicated by the display device 28, similar to FIG. 4, is passed through (see FIG. 5).
  • the measuring signal still indicates the steady state B 1 of the wet film which it had when the measuring roller was in contact with the dampening roller.
  • Wet film degradation now begins on the measuring roller, approximately according to a curve 36a in FIG. 5, until the transition point U 1 is reached.
  • the measurement signal curve 36 starting from the steady state B 1 to the transition point U 1 , shows a stronger liquid film than the curve 37, which assumes an assumed steady state B 2 of a weaker wet film and reaches the transition point at U 2 . It becomes clear that not only the ordinates B 1 and B 2 represent a measure of the wet film thickness, but also the time that elapses until the changeover point is reached.
  • the period of time from when the measuring roller was placed on the inking roller (switching time) to the transition point U is a measure of the dampening solution film thickness that was present at the time of switching.
  • the time period mentioned above is displayed in a suitable manner by means of the display device 28.
  • the number of measuring roller revolutions from the time of switching i.e. from changing the measuring roller 14 from the dampening roller 11 to the inking roller 12 or vice versa, up to the transition point U are displayed.
  • the differential quotient of the measuring signal of the measuring device in the alternating phases of the dampening solution measurement! Color and from color to fountain solution display.
  • the channel 33 in the outer surface of the measuring roller 14 interrupts the measuring signal briefly with each revolution and sets a peak.
  • measurement signal is recorded by means of a display device 28 designed as a recording device, measurement signal curves according to FIG. 6 arise.
  • measurement signal curve 38a, b In measurement signal curve 38a, b, four peaks are recorded until shortly after the start of coloring, in measurement signal curve 39a, b only two peaks corresponding to the number of revolutions of the measuring roller until the changeover point is reached. The number of peaks until the transition point is reached is therefore a measure of the initial thickness of the dampening solution film. !
  • the degradation of the dampening solution layer from the hydrophilic measuring roller after contact with the inking roller takes place through continuous splitting of the water film and is therefore hardly influenced by the existing ink layer thickness.
  • the measuring roller which is colored to saturation
  • swings back (ink film thickness on the measuring roller is approximately equal to the ink film thickness on the inking roller) to the oleophilic dampening roller
  • the ink film remaining on the measuring roller is removed from the dampening roller. Due to the constantly renewing wet film on the dampening roller, the measuring roller is completely wetted with dampening solution.
  • the ratio of the respective layer thicknesses to one another is a measure of the time which elapses before the measuring roller becomes free of color, that is to say the point of change occurs, or a phototransistor indicates the disappearance of the color, if one similar to FIG 3 is installed.
  • FIG. 7 shows the measurement signal curves 40, 41, 42 for three different ink layer thicknesses on the measuring roller after swiveling the measuring roller from the ink roller to the dampening roller.
  • the transition point will occur sooner or later. (The peaks are omitted in FIG. 7 for the sake of clarity).
  • the transition points are identified by the curve approaches with the indices b, c and d.
  • the slope with which these curve approaches begin, is a measure of the existing on the dampening roller damp film thickness, which will later appear after the free running of paint on the measuring roller in the steady state.
  • the envelope with the dampening solution strengths corresponding to 42c and 42d occurs earlier than desired. Only a reduction in the moisture management to a film thickness according to 42e brings about the right balance. If this correction is not carried out, the plate will contain too much water and e.g. B. show water noses in the printed image.
  • FIG. 8 A third embodiment of the invention is shown in FIG. 8.
  • the measuring roller 14 is provided with an oleophilic outer surface part 43 and a hydrophilic outer surface part 44, each half of its circumference.
  • the two lateral surface parts 43 and 44 are separated from one another by two channels 45.
  • the oleophilic lateral surface part 43 can consist, for example, of copper, the hydrophilic part of chromium.
  • the incident light method must therefore be used to measure the film thickness on the outer surface of the measuring roller 14.
  • the measuring head which is only shown schematically in FIG. 8, contains the radiation source 16, the infrared detectors 18 and 19 with the filters 20 and 24 assigned to them and the phototransistor 21.
  • the phototransistor 21 is electrically connected via the amplifier 29 to the display device 30 for the color film thickness display in the same way as in the embodiment according to FIG. 2.
  • the measuring roller 14 In its working position, the measuring roller 14 is simultaneously in contact with both the second dampening roller 11 and the first inking roller 12.
  • the oleophilic surface area part 43 of the measuring roller 14 only accepts ink from the inking roller 12 and the hydrophilic surface area part 44 only takes dampening solution from the dampening application roller 11, although both measuring surface halves successively touch both application rollers.
  • the phototransistor 21 is when the oleophilic surface 43 passes and the infrared detectors 18 and 19 pass the hydrophilic surface 44 switched on.
  • the display device 28 thus displays a wet film thickness corresponding to the second dampening application roller 11, while the display device 30 displays a color film thickness corresponding to the ink application roller.
  • the printer controlling the dampening and coloring thus has a measured value which reflects the wet-color ratio actually present on the plate in a very good manner, because the measuring roller 14 rests on the rollers of the dampening and inking unit in the same way as the offset plate.
  • the printer can now easily adjust the moisture-color balance that he has determined to be optimal.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Rotary Presses (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
EP78100108A 1977-08-13 1978-06-06 Procédé et dispositif pour contrôler l'équilibre entre le liquide de mouillage et l'encre dans des dispositifs à imprimer en offset Withdrawn EP0000689A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7815027A NL172218C (nl) 1977-08-13 1978-06-06 Inrichting voor het bepalen van het vocht- en inktevenwicht bij een offset-drukmechanisme.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2736663A DE2736663C3 (de) 1977-08-13 1977-08-13 Vorrichtung zur Ermittlung des Feucht- und Farbgleichgewichts bei Offsetdruckwerken
DE2736663 1977-08-13

Publications (1)

Publication Number Publication Date
EP0000689A1 true EP0000689A1 (fr) 1979-02-21

Family

ID=6016386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100108A Withdrawn EP0000689A1 (fr) 1977-08-13 1978-06-06 Procédé et dispositif pour contrôler l'équilibre entre le liquide de mouillage et l'encre dans des dispositifs à imprimer en offset

Country Status (14)

Country Link
US (1) US4407197A (fr)
EP (1) EP0000689A1 (fr)
JP (1) JPS5456509A (fr)
AT (1) AT377945B (fr)
AU (1) AU517149B2 (fr)
BE (1) BE17T1 (fr)
CA (1) CA1105769A (fr)
DE (1) DE2736663C3 (fr)
ES (2) ES472353A1 (fr)
FR (1) FR2434036A1 (fr)
GB (1) GB2047166B (fr)
IT (1) IT1160590B (fr)
NO (1) NO150070C (fr)
SE (2) SE425642B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087571A1 (fr) * 1982-02-19 1983-09-07 Forschungsgesellschaft Druckmaschinen e.V. Dispositif pour la mesure sans contact en temps réel des propriétés ou grandeurs caractéristiques dans le procédé de séparation ou de division de volume de liquide ou de couches de liquide dans la division par rouleaux de machines à imprimer
EP0095652A2 (fr) * 1982-06-02 1983-12-07 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de réglage du mouillage en fonction du profil d'encrage
EP0096247A2 (fr) * 1982-05-28 1983-12-21 grapho metronic Mess- und Regeltechnik GmbH & Co. KG Dispositif pour l'obtention en operation d'une valeur d'humidité pour la plaque rotative d'impression dans une machine d'impression "offset"
EP0116139A1 (fr) * 1982-12-23 1984-08-22 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de réglage du mouillage en fonction du profil d'encrage dans le dispositif d'encrage des machines d'impression offset
EP0132624A1 (fr) * 1983-07-23 1985-02-13 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de contrôle par zones de l'alimentation en agent de mouillage dans l'encrier d'une machine à imprimer offset, au moyen de techniques de mesure
EP0186620A2 (fr) * 1984-12-24 1986-07-02 Mitsubishi Jukogyo Kabushiki Kaisha Méthode de commande de l'épaisseur du film d'amalgame liquide de corps gras et d'eau dans les machines à imprimer
US5060568A (en) * 1981-02-26 1991-10-29 Veb Kombinat Polygraph "Werner Lamberz" Leipzig Distributing roller unit and printing mechanism provided therewith
US7522281B2 (en) 2004-12-20 2009-04-21 Heidelberger Druckmaschinen Ag Apparatus and method for detecting moisture in a printing plate exposer

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD157779A1 (de) * 1980-10-06 1982-12-08 Hans Johne Verfahren und vorrichtung zur optimalen zumessung des feuchtmittels
DD156239A1 (de) * 1981-01-07 1982-08-11 Eva Luebbe Verfahren zur korrektur von abweichungen der einfaerbung und feuchtung an offsetdruckmaschinen
DE3113674A1 (de) * 1981-04-04 1982-10-14 Grapho-Metronic Meß- und Regeltechnik GmbH & Co, KG, 8000 München Vorrichtung zum messen der feuchtmittelmenge auf der druckplatte einer offset-druckmaschine
JPS5894466A (ja) * 1981-11-27 1983-06-04 フオルクスアイゲネルベトリ−プ・コンビナ−ト・ポリグラフ゛ベルナ−・ランベルツ「あ」ライプツイヒ 湿し剤の適量供給方法とその装置
DE3220701C3 (de) * 1982-06-02 1995-09-07 Heidelberger Druckmasch Ag Vorrichtung zur Feuchtmittelführung bei einem Offsetdruckwerk
JPS59211830A (ja) * 1983-05-17 1984-11-30 Sumitomo Heavy Ind Ltd 印刷機の湿し水計測装置
JPH0651404B2 (ja) * 1984-03-19 1994-07-06 富士写真フイルム株式会社 印刷中の平版版面状態の計測装置
DE3525794A1 (de) * 1985-07-19 1987-01-29 Rueesch Ferd Ag Vorrichtung zum voremulgieren der farbemulsion bei offset-druckwerken
DE8904197U1 (de) * 1989-04-05 1989-05-18 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Walze im Druckwerk von Rotationsdruckmaschinen
US5038038A (en) * 1989-05-09 1991-08-06 Southwest Research Institute Optical sensor for detecting quantity of protective coating
US5240827A (en) * 1991-02-08 1993-08-31 Eastman Kodak Company Photographic element containing large, selenium-sensitized silver chloride grains
DE4303282C2 (de) * 1993-02-05 2002-02-28 Heidelberger Druckmasch Ag Vorrichtung zur Feuchtmittelzufuhr bei einer Offsetdruckmaschine
DE4436582C2 (de) * 1994-10-13 1998-07-30 Heidelberger Druckmasch Ag Verfahren zur Regelung einer Feuchtmittelmenge für eine Druckform einer laufenden Offsetrotationsdruckmaschine
AUPQ611200A0 (en) * 2000-03-09 2000-03-30 Commonwealth Scientific And Industrial Research Organisation Determination of change in thickness of dampening solution on offset printing rollers
US7215427B2 (en) * 2001-12-18 2007-05-08 Kba-Giori S.A. Device for controlling material
US10273424B2 (en) 2012-03-09 2019-04-30 B.C.B. International Limited Alcohol-containing compositions useful as solid fuels and processes for their manufacture
GB202002208D0 (en) 2020-02-18 2020-04-01 Ricoh Co Ltd Test Apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1289049A (fr) * 1970-05-05 1972-09-13
FR2198840A1 (fr) * 1972-09-12 1974-04-05 Vickers Ltd
US3870884A (en) * 1973-08-24 1975-03-11 Infra Systems Inc Apparatus for negating effect of scattered signals upon accuracy of dual-beam infrared measurements

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915817C (de) * 1951-05-22 1954-07-29 Coates Brothers & Company Ltd Feuchtwerk einer Druckmaschine mit Reinigungswalze
US3353484A (en) * 1965-06-02 1967-11-21 Vandercook & Sons Inc Inking system for printing presses
GB1150709A (en) * 1966-11-26 1969-04-30 Ernest Arthur Timson Improvements in or relating to Inking Mechanisms for Printing Machines
CH466330A (de) * 1968-04-26 1968-12-15 De La Rue Giori Sa Vorrichtung zur Kontrolle der Farbfilmstärke in einem Farbwerk für Druckmaschinen
GB1207220A (en) * 1968-07-03 1970-09-30 Pfizer & Co C Paper coating and coated paper
GB1226487A (fr) * 1969-11-14 1971-03-31
FR2102697A5 (fr) * 1970-08-17 1972-04-07 Etudes De Machines Speciales
NL7312445A (fr) * 1972-08-31 1974-03-14
DE2300922A1 (de) * 1973-01-09 1974-07-18 Fischer Gmbh & Co Helmut Einrichtung zur optisch elektronischen messung der schichtdicke von farben
US4151796A (en) * 1973-04-02 1979-05-01 Heidelberger Druckmaschinen Aktiengesellschaft Device for automatically controlling deviations in liquid feed in offset presses
IT1033240B (it) * 1974-03-14 1979-07-10 Grapho Metronic Gmbh & Co Umidificatore in una macchina stampatrice offset con un dispositivo per la regolazione del quantitativo d acqua sulla piastra

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1289049A (fr) * 1970-05-05 1972-09-13
FR2198840A1 (fr) * 1972-09-12 1974-04-05 Vickers Ltd
US3870884A (en) * 1973-08-24 1975-03-11 Infra Systems Inc Apparatus for negating effect of scattered signals upon accuracy of dual-beam infrared measurements

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5060568A (en) * 1981-02-26 1991-10-29 Veb Kombinat Polygraph "Werner Lamberz" Leipzig Distributing roller unit and printing mechanism provided therewith
EP0087571A1 (fr) * 1982-02-19 1983-09-07 Forschungsgesellschaft Druckmaschinen e.V. Dispositif pour la mesure sans contact en temps réel des propriétés ou grandeurs caractéristiques dans le procédé de séparation ou de division de volume de liquide ou de couches de liquide dans la division par rouleaux de machines à imprimer
EP0096247A2 (fr) * 1982-05-28 1983-12-21 grapho metronic Mess- und Regeltechnik GmbH & Co. KG Dispositif pour l'obtention en operation d'une valeur d'humidité pour la plaque rotative d'impression dans une machine d'impression "offset"
EP0096247A3 (en) * 1982-05-28 1984-10-03 Grapho Metronic Mess- Und Regeltechnik Gmbh & Co. Kg Device for the on line obtention of an average moisture value for the rotating printing plate in offset printing machines
EP0095652A2 (fr) * 1982-06-02 1983-12-07 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de réglage du mouillage en fonction du profil d'encrage
EP0095652A3 (en) * 1982-06-02 1984-07-25 Heidelberger Druckmaschinen Aktiengesellschaft Device for metering dampening fluid dependent upon the ink profile
EP0116139A1 (fr) * 1982-12-23 1984-08-22 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de réglage du mouillage en fonction du profil d'encrage dans le dispositif d'encrage des machines d'impression offset
EP0132624A1 (fr) * 1983-07-23 1985-02-13 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de contrôle par zones de l'alimentation en agent de mouillage dans l'encrier d'une machine à imprimer offset, au moyen de techniques de mesure
EP0186620A2 (fr) * 1984-12-24 1986-07-02 Mitsubishi Jukogyo Kabushiki Kaisha Méthode de commande de l'épaisseur du film d'amalgame liquide de corps gras et d'eau dans les machines à imprimer
EP0186620A3 (en) * 1984-12-24 1988-06-08 Mitsubishi Jukogyo Kabushiki Kaisha Method of controlling film thickness of mixture liquid layer of oil material and water in printer
US7522281B2 (en) 2004-12-20 2009-04-21 Heidelberger Druckmaschinen Ag Apparatus and method for detecting moisture in a printing plate exposer

Also Published As

Publication number Publication date
DE2736663B2 (de) 1980-09-04
DE2736663A1 (de) 1979-02-15
DE2736663C3 (de) 1985-05-15
IT1160590B (it) 1987-03-11
JPS5456509A (en) 1979-05-07
FR2434036B1 (fr) 1981-07-03
JPS5735113B2 (fr) 1982-07-27
BE17T1 (fr) 1979-12-07
NO782739L (no) 1979-06-11
IT7868902A0 (it) 1978-08-11
AU3788778A (en) 1980-01-17
CA1105769A (fr) 1981-07-28
SE446388B (sv) 1986-09-08
SE8202921L (sv) 1982-05-10
ES472354A1 (es) 1979-03-16
US4407197A (en) 1983-10-04
SE425642B (sv) 1982-10-25
NO150070B (no) 1984-05-07
NO150070C (no) 1984-08-15
AT377945B (de) 1985-05-28
AU517149B2 (en) 1981-07-09
ES472353A1 (es) 1979-03-16
FR2434036A1 (fr) 1980-03-21
ATA589878A (de) 1984-10-15
GB2047166B (en) 1982-07-14
SE7907768L (sv) 1979-09-19
GB2047166A (en) 1980-11-26

Similar Documents

Publication Publication Date Title
EP0000689A1 (fr) Procédé et dispositif pour contrôler l'équilibre entre le liquide de mouillage et l'encre dans des dispositifs à imprimer en offset
EP2759407B1 (fr) Procédé de réglage et dispositif pour determiner la distance optimale entre au moins deux cylindres impliqués dans un procédé d'impression
EP0393365B1 (fr) Procédé et dispositif d'alimentation en liquide de mouillage d'une machine à imprimer en offset
EP0096247B1 (fr) Dispositif pour l'obtention en operation d'une valeur d'humidité pour la plaque rotative d'impression dans une machine d'impression "offset"
EP2380741A1 (fr) Procédé et dispositif de mesure de l'épaisseur d'une couche d'agent mouillant ou d'émulsion d'encre dans un procédé d'impression offset
DE3140760A1 (de) "verfahren zur korrektur von abweichungen der einfaerbung und feuchtung an offsetdruckmaschinen"
EP0132624B1 (fr) Dispositif de contrôle par zones de l'alimentation en agent de mouillage dans l'encrier d'une machine à imprimer offset, au moyen de techniques de mesure
DE10211870B4 (de) Verfahren zur Justierung zweier aneinander anlegbarer Walzen eines Druckwerks
AT389675B (de) Vorrichtung zur farbprofilabhaengigen feuchtmittelregelung
DE19518660C2 (de) Verfahren zur Einstellung einer Feuchtmittelmenge
DE102011086047A1 (de) Verfahren zum Einstellen der Abstände zwischen Zylindern eines Farbwerkes und Druckmaschine
DE2951649C2 (de) Farbkasten von Druckmaschinen
EP0482309B1 (fr) Dispositif pour revêtir les deux faces d'un matériau en bande
DE3238912C1 (de) Vorrichtung zum zonenweisen Abtasten der Einfaerbung eines Plattenzylinders einer Rotations-Offsetdruckmaschine
EP0223972B1 (fr) Dispositif d'encrage pour machines d'impression offset ou d'impression typographique
DE4237004A1 (de) Verfahren zur Online-Farbregelung von Druckmaschinen
EP0860276B1 (fr) Procédé et dispositif de contrôle de qualité
DE3113674A1 (de) Vorrichtung zum messen der feuchtmittelmenge auf der druckplatte einer offset-druckmaschine
DE4106082A1 (de) Verfahren und vorrichtung zum positionieren einer sensoreinrichtung
DE3611645A1 (de) Verfahren und vorrichtung zur regelung der farb- und feuchtmittelanteile einer emulsionsschicht auf der druckplatte einer offset-druckmaschine
DE3326699C1 (de) Vorrichtung zum Befeuchten einer Druckplatte
WO2014183913A1 (fr) Dispositif de mesure de couleur, en particulier pour presse à imprimer
DE3108469C2 (de) Vorrichtung zum Messen von Farbschichtdicken mittels eines Densitometers
DE2902230A1 (de) Farbwerk
DE3102043A1 (de) "anordnung zur dosierung des feuchtmittels fuer offset-druckmaschinen"

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

Designated state(s): BE CH DE FR GB 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
32 Conversion
RIN1 Information on inventor provided before grant (corrected)

Inventor name: JESCHKE, WILLI