EP0889782A1 - Procede pour imprimer un materiau support - Google Patents

Procede pour imprimer un materiau support

Info

Publication number
EP0889782A1
EP0889782A1 EP97918020A EP97918020A EP0889782A1 EP 0889782 A1 EP0889782 A1 EP 0889782A1 EP 97918020 A EP97918020 A EP 97918020A EP 97918020 A EP97918020 A EP 97918020A EP 0889782 A1 EP0889782 A1 EP 0889782A1
Authority
EP
European Patent Office
Prior art keywords
printing
carrier
water
printed
printing method
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.)
Granted
Application number
EP97918020A
Other languages
German (de)
English (en)
Other versions
EP0889782B1 (fr
Inventor
Robert Link
Manfred Wiedemer
Joachim Heinzl
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.)
Canon Production Printing Germany GmbH and Co KG
Original Assignee
Oce Printing Systems GmbH and Co KG
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 Oce Printing Systems GmbH and Co KG filed Critical Oce Printing Systems GmbH and Co KG
Publication of EP0889782A1 publication Critical patent/EP0889782A1/fr
Application granted granted Critical
Publication of EP0889782B1 publication Critical patent/EP0889782B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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 printing method for producing a print image on a carrier material, in which hydrophobic and hydrophilic areas are generated on a surface of a print carrier in accordance with the structure of the print image to be printed, the surface is covered with a thin moisture film which covers the hydrophilic ones Areas wetted, then paint is applied to the surface, which adheres to the non-wetted areas and is not accepted by the wetted areas, and in which the color is printed from there on the carrier material.
  • the invention further relates to a further printing method and a device for carrying it out.
  • partially printing areas corresponding to the print image to be printed are formed on the surface of a printing medium, for example a printing plate, a printing tape or a printing template, which are colored with color during the printing process and then the carrier material print with the color.
  • a printing medium for example a printing plate, a printing tape or a printing template
  • Various methods are known for forming these partially printing areas.
  • the DRECT-IMAGING process from Heidelberger Druckmaschinen, in which a print template is created on a silicon-coated film by partially burning away the silicon layer, the silicone-free areas of which absorb the color during the printing process and print on the carrier material.
  • hydrophobic and hydrophilic areas are generated on the print carrier in accordance with the structure of the print image to be printed.
  • a thin film of moisture is first applied to the print carrier by using application rollers or spray devices, which film covers the hydrophilic areas of the Print carrier wetted. Then, with the help of an ink roller, ink is applied to the surface of the print carrier, which, however, only uses the areas not covered with a moisture film. After inking the print carrier, the colored print image is finally transferred to the carrier material.
  • the surface of the print carrier is treated with steam, the 'surfaces at the hydrophilic Berei- precipitates as a thin film of water.
  • the layer thickness can be influenced by deliberately influencing the amount of water vapor of the film can be regulated in a simple manner, and because of the small layer thickness, a very exact wetting of the hydrophilic areas is made possible, which results in a high printing quality.
  • additives which would have to be added to the water to reduce the surface tension can be dispensed with. Due to the evaporation and the subsequent condensation, which is equivalent to a distillation of the water, it is also unnecessary to adjust the water hardness and the pH value and to add antimicrobial agents.
  • the printing of the carrier material takes place via an intermediate carrier arranged between the carrier material and the print carrier, to which the ink is first transferred from the surface of the print carrier before the carrier material is printed.
  • the intermediate carrier does not come into direct contact with the carrier material, so that its surface can be adapted to optimal wetting with water and paint.
  • An elastic intermediate carrier such as a rubber blanket or a roller with a rubberized surface, is proposed as the intermediate carrier, which on the one hand can adapt to the surface of the printing carrier and on the other hand to different carrier materials, such as newsprint or glossy paper.
  • the use of a plurality of diaphragms distributed along the surface of the print carrier is proposed in a further embodiment of the invention.
  • water vapor is fed to the surface of the pressure carrier or is prevented from it, so that the amount of water vapor striking the surface of the pressure carrier can be varied in a simple manner.
  • the water vapor itself can be generated by various devices.
  • a moistened fabric band arranged near the surface of the print carrier is guided past the surface of the print carrier, while a radiation or heat source arranged below the fabric band heats the fabric band, whereby water vapor is generated, which builds up on the surface of the print carrier precipitates.
  • a laser with deflection and focusing optics, high-temperature lamps or laser diode arrays is proposed as the radiation source, and heating elements, thermal combs or microwave elements are suitable as heat sources.
  • the water vapor is transferred to the surface by means of a vapor deposition device arranged near the surface of the pressure carrier.
  • This vapor deposition device is, for example, a pipe system arranged along the surface of the pressure medium with openings of small diameter facing the surface of the pressure medium and serving as nozzles, to which water vapor is supplied via a line system.
  • the water vapor is preferably generated in a steam generator, wherein the amount of water vapor can be varied by means of valves arranged between the steaming device and the steam generator.
  • Excess water vapor, which does not deposit on the surface of the pressure carrier, can be condensed, for example, by means of a condensation device arranged near the pressure carrier and fed back to the steam generator, which enables a more precise metering of the water vapor quantities.
  • a further aspect of the invention is a printing method in which water vapor is selectively and partially applied to the surface of the print carrier in such a way that a partial water film forming the print image is formed on the surface.
  • the use of a print carrier, on the surface of which hydrophilic and hydrophobic areas are formed are dispensed with, so that additional work steps are omitted.
  • the printing process with selective use of water uses a printing medium with a uniform surface, to which the water film resulting from the printed image is applied. This makes it possible to change the print template within a printing process, so that the printing process works with a very high degree of flexibility.
  • an intermediate carrier for example a rubber blanket or a roller with a rubberized surface, which adapts to the various carrier materials used, is also proposed.
  • a fabric tape moistened with water is arranged opposite the surface of the print carrier, which is removed using a radiation source, for example a laser with deflection and focusing optics, high-temperature lamps or laser diode arrays. and / or a heat source, such as heating elements, thermal combs or microwave elements, is selectively heated at locations corresponding to the printed image.
  • a radiation source for example a laser with deflection and focusing optics, high-temperature lamps or laser diode arrays.
  • a heat source such as heating elements, thermal combs or microwave elements
  • an evaporating device with a water supply is arranged instead of a moistened fabric band opposite the surface of the pressure medium.
  • the vaporization device has a multiplicity of depressions filled with water, in each of which at least one heating element is provided which can be actuated independently of the other heating elements.
  • the heating elements are selectively activated so that the water in the recess is evaporated and condensed on the pressure medium above.
  • the amount of steam can be changed in a defined manner by varying the amount of energy supplied.
  • FIG. 1 shows a vapor deposition device for vapor deposition of a print carrier with hydrophobic and hydrophilic areas
  • FIG. 2 shows a printing device in which the vapor deposition device according to FIG. 1 is used
  • FIG. 3 shows a first embodiment of a device for selective and partial vapor deposition of the surface of a printing medium
  • FIG. 4 is a printing device in which the device is used according to FIG 3, and 5 shows a second embodiment of a device which can be used for selective and partial vapor deposition of the surface of the print carrier shown in FIG. 4.
  • FIG. 1 shows a device 10 for steaming the surface of a printer roller 12 serving as a print carrier.
  • the device 10 has a steaming device 14 which is arranged near the outer surface of the printer roller 12 and which extends at least approximately over the entire width of the printer roller 12.
  • a plurality of openings 16 of smaller diameter serving as nozzles are provided, through which pressurized water vapor is directed onto the surface of the printing roller 12.
  • an electrically heatable heating coil 18 is also provided on the vaporization device 14, which additionally heats the water vapor in the vaporization device 14.
  • the first end of the steaming device 14 shown on the left in FIG. 1 is connected to a steam generator 24 via a flow line 20 in which a flow valve 22 is arranged.
  • the steam generator 24 is filled with water, which is heated by an electrically operated heating device 26 attached to the steam generator 24.
  • the other end of the vapor deposition device 14 shown on the right in FIG. 1 is connected via a line section 28, in which a regulating valve 30 is arranged, to a helically curved condensation line 32 serving as a condensation device, which ends in a collecting container 34.
  • the collecting container 34 is in turn connected to the steam generator 24 via a return line 36, in which a return valve 38 is provided, so that a closed circuit is created.
  • FIG. 2 shows a printing device 40 in which the vapor deposition device 14 described in FIG. 1 is used.
  • the central element of the printing device 40 is the clockwise rotating printer roller 12, on the surface of which hydrophilic and hydrophobic areas which correspond to the structure of the print image to be printed are formed by etching.
  • a dyeing station 42 is arranged.
  • the dyeing station 42 has an inking roller 44 which rolls on the printing roller 12 and which is supplied with ink by a supply roller 48 via an intermediate roller 46.
  • the supply roller 48 in turn is immersed in the ink supply of an ink container 50, in which the ink desired for the printing process is filled.
  • a transfer printing station 52 Viewed in the direction of rotation of the printer roller 12 after the dyeing station 42, a transfer printing station 52 is arranged.
  • This transfer printing station 52 has an intermediate carrier roller 54 equipped with a rubberized outer surface, which extends at least approximately over the entire width of the printing roller 12 and runs parallel to it and bears against it under slight pretension.
  • a counter-pressure roller 56 which bears against the jacket surface of the intermediate carrier roller 54 under tension and forms a transport gap 58 through which the carrier material 60 to be printed is conveyed in the direction of the arrow.
  • the printing roller 12 begins to rotate and is applied by the vaporization device 14 with water vapor, which lies down on the hydrophilic areas of the surface of the printing roller 12 as a uniform, thin water film, while none on the hydrophobic areas Water film is formed.
  • the portion of the printer roller 12 that is moistened in this way then passes into the dyeing station 42, in which the ink roller 44, which is under pressure on the printer roller 12, rolls ink on the surface of the printer roller 12. Because water and Repel paint, does the paint stick when dyed in the dye, t, - ⁇ t ion 4? only on the hydrophobic areas not wetted with water.
  • the portion of the printer roller 12 inked in this way comes into contact with the intermediate carrier roller 54, to which the inked printing image of the printer roller 12 is transferred, which is then transferred from the intermediate carrier roller 54 to the carrier material conveyed in the transport nip 58 by the action of the counter-pressure roller 56 60 is printed.
  • FIG. 3 describes a first embodiment of a steaming device 70 for the selective steaming of the printing tape 72 of a printing device 74.
  • the steaming device 70 has a fabric tape 76 which is driven in the direction of movement of the printing tape 72 and is arranged parallel and at a short distance from the printing tape 72 a roller system (not shown) is continuously moistened with water.
  • a heating device On the side of the fabric tape 76 facing away from the printing tape 72 there is provided a heating device (not shown) which extends approximately over the entire width of the printing tape 72 and transversely to its direction of movement.
  • This heating device has a plurality of radiation sources 78 arranged in a row in the longitudinal direction and which can be activated selectively and independently of one another.
  • FIG. 4 shows a schematic illustration of the pressure device 74, in which the first embodiment of the vaporization device 70 described in FIG. 3 is used.
  • the printing device 74 has a driven, clockwise rotating conveyor roller 80, which is shown on the left in FIG. 4, and a printer roller 82, which is arranged approximately at the same height and shown on the right in FIG. 4, the axis of which is parallel to the axis of the conveyor roller 80 runs.
  • a parallel deflection roller 84 is provided below them.
  • the printing belt 72 is guided over the conveyor roller 80, the printing roller 82 and the deflection roller 84.
  • a dyeing station 86 Viewed in the transport direction of the printing belt 72 after the steaming device 70, a dyeing station 86 is provided in the area of the printing roller 82. This dyeing station 86 has an inking roller 88 lying against the printing belt 72, which is biased against the printing roller 82. A supply roller 90, which bears against the inking roller 88 and is immersed in a ink container 92 filled with ink, supplies the inking roller 88 with ink.
  • the transfer printing point 94 is provided, at which a counter-pressure roller 96 is pretensioned against the printing roller 82 under prestress on the printing belt 72.
  • the counter-pressure roller 96 and the pressure belt 72 resting on the pressure roller 82 form a transport nip 98 through which the carrier material 100 is moved.
  • a cleaning device 102 is finally arranged in the region of the deflecting roller 84, seen in the transport direction of the printing belt 72 after the transfer printing point 94.
  • the cleaning device 102 has a wiping lip 104, which is pretensioned on the printing belt 72, and a cleaning brush 106 arranged downstream, which serve to remove water and ink residues on the printing side of the printing belt 72.
  • the radiation sources 78 of the heating device begin to selectively and partially heat the fabric tape 76 moistened with water, as a result of which the water stored in the fabric tape 76 evaporates and is deposited on the side of the printing tape 72 facing the fabric tape 76 .
  • a partial water film which reproduces the print image is formed on the surface of the print belt 72.
  • the printing tape 72 thus moistened is fed to the dyeing station 86, in which the inking roller 88 applies ink to the surface of the printing tape 72.
  • the areas not wetted with water are before colored, while the water on the areas wetted with water prevents these areas from being colored.
  • the inked section of the printing tape 72 moves into the transfer printing location 94, in which the inked printing image is printed directly onto the carrier material 100 by the action of the counter-pressure roller 96.
  • FIG. 5 shows a second embodiment of a steaming device 120, which can be used instead of the steaming device 70 in the printing device 74 shown in FIG.
  • the steaming device 120 has a heating strip 122 which extends transversely to the transport direction of the printing tape 72 over its entire width.
  • the heating strip 122 has in its longitudinal direction a multiplicity of cylindrical depressions 124 arranged next to one another in a row, each of which has a heating element 126 on its closed end face and the like the respective open end face faces the pressure band 72.
  • the heating elements 126 By selectively activating the heating elements 126, the water located in the respective recess 124 is heated to such an extent that it evaporates and precipitates on the side of the printing tape 72 facing the heating strip 122, so that a partial water film which reproduces the printed image is formed. Subsequently, the tape 72 wetted in this way, as already described above, is conveyed in the same way through the dyeing station 86 and the transfer printing point 94 in order to print on the carrier material 100.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)

Abstract

L'invention concerne un procédé d'impression selon lequel des zones hydrophobes et hydrophiles sont produites sur une des surfaces d'un support d'impression (12), conformément à la structure de l'image à imprimer. Ladite surface est ensuite soumise à l'action de vapeur d'eau à l'aide d'un dispositif de vaporisation (14) et il se forme une fine pellicule d'humidité sur les zones hydrophiles. Après vaporisation, la surface est teintée dans un poste de coloration (72), la matière colorante adhérant aux zones non imprégnées d'eau. Après l'étape de coloration, la matière colorante est imprimée sur le matériau support (60).
EP97918020A 1996-03-29 1997-03-13 Procede pour imprimer un materiau support Expired - Lifetime EP0889782B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19612761 1996-03-29
DE19612761 1996-03-29
PCT/DE1997/000508 WO1997036746A1 (fr) 1996-03-29 1997-03-13 Procede pour imprimer un materiau support

Publications (2)

Publication Number Publication Date
EP0889782A1 true EP0889782A1 (fr) 1999-01-13
EP0889782B1 EP0889782B1 (fr) 2000-04-26

Family

ID=7789995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97918020A Expired - Lifetime EP0889782B1 (fr) 1996-03-29 1997-03-13 Procede pour imprimer un materiau support

Country Status (5)

Country Link
US (1) US6125755A (fr)
EP (1) EP0889782B1 (fr)
JP (1) JP2000507512A (fr)
DE (1) DE59701516D1 (fr)
WO (1) WO1997036746A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6295928B1 (en) * 1997-01-27 2001-10-02 OCé PRINTING SYSTEMS GMBH Method and device for printing on a carrier material using a structured ice layer
DE19826377A1 (de) * 1998-06-12 1999-12-16 Heidelberger Druckmasch Ag Druckmaschine und Druckverfahren
DE10063987A1 (de) 2000-12-21 2002-07-18 Oce Printing Systems Gmbh Einrichtung und Verfahren zum Reinigen eines Druckträgers vor jedem Druckzyklus
DE10206937A1 (de) 2002-02-19 2003-09-04 Oce Printing Systems Gmbh Verfahren und Einrichtung zum Drucken, wobei vor dem Auftrag eines Feuchtmittels eine benetzungsfördernde Substanz in molekularer Schichtdicke aufgetragen wird
DE10206942A1 (de) 2002-02-19 2003-09-04 Oce Printing Systems Gmbh Verfahren und Einrichtung zum Drucken, wobei zum Strukturieren gesteuerte Strahlungsventile verwendet werden
DE10206944A1 (de) 2002-02-19 2003-09-04 Oce Printing Systems Gmbh Verfahren und Einrichtung zum Drucken, wobei die Dicke der Feuchtmittelschicht gemessen und reduziert wird
DE10206938A1 (de) * 2002-02-19 2003-09-04 Oce Printing Systems Gmbh Verfahren und Einrichtung zum Drucken, wobei eine hydrophile Schicht erzeugt und diese strukturiert wird
DE10206946A1 (de) 2002-02-19 2003-09-04 Oce Printing Systems Gmbh Verfahren und Einrichtung zum Drucken, wobei eine Hydrophilisierung des Druckträgers durch freie Ionen erfolgt
JP2006310470A (ja) * 2005-04-27 2006-11-09 Tokyo Institute Of Technology 液体パターン形成方法及び形成装置
ATE453509T1 (de) 2006-02-21 2010-01-15 Moore Wallace North Am Inc Systeme und verfahren für variable hochgeschwindigkeitsdruckvorgänge
US8967044B2 (en) 2006-02-21 2015-03-03 R.R. Donnelley & Sons, Inc. Apparatus for applying gating agents to a substrate and image generation kit
US8881651B2 (en) 2006-02-21 2014-11-11 R.R. Donnelley & Sons Company Printing system, production system and method, and production apparatus
US9463643B2 (en) 2006-02-21 2016-10-11 R.R. Donnelley & Sons Company Apparatus and methods for controlling application of a substance to a substrate
US8869698B2 (en) * 2007-02-21 2014-10-28 R.R. Donnelley & Sons Company Method and apparatus for transferring a principal substance
EP2190672B1 (fr) 2007-08-20 2011-10-26 Moore Wallace North America, Inc. Composition à base de nanoparticules compatible avec l'impression par jet d'encre
US9701120B2 (en) 2007-08-20 2017-07-11 R.R. Donnelley & Sons Company Compositions compatible with jet printing and methods therefor
DE102011075307A1 (de) 2011-05-05 2012-11-08 Voith Patent Gmbh Befeuchtung einer Druckplatte
US20130033687A1 (en) * 2011-08-05 2013-02-07 Palo Alto Research Center Incorporated Method for Direct Application of Dampening Fluid for a Variable Data Lithographic Apparatus
US9032874B2 (en) * 2012-03-21 2015-05-19 Xerox Corporation Dampening fluid deposition by condensation in a digital lithographic system
US8950322B2 (en) * 2012-03-21 2015-02-10 Xerox Corporation Evaporative systems and methods for dampening fluid control in a digital lithographic system
DE102012112494A1 (de) 2012-12-18 2014-07-03 Karlsruher Institut für Technologie Verfahren zum Übertragen einer Transferflüssigkeit von einer Vorlagefläche in eine Mehrzahl von diskreten Kompartimenten auf einer Zielfläche und Transferfläche zur Durchführung des Verfahrens

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Also Published As

Publication number Publication date
WO1997036746A1 (fr) 1997-10-09
DE59701516D1 (de) 2000-05-31
JP2000507512A (ja) 2000-06-20
US6125755A (en) 2000-10-03
EP0889782B1 (fr) 2000-04-26

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