EP1260360B1 - Verfahren zum Aufbringen von Druckfarben auf einen Bedruckstoff - Google Patents

Verfahren zum Aufbringen von Druckfarben auf einen Bedruckstoff Download PDF

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Publication number
EP1260360B1
EP1260360B1 EP02010121A EP02010121A EP1260360B1 EP 1260360 B1 EP1260360 B1 EP 1260360B1 EP 02010121 A EP02010121 A EP 02010121A EP 02010121 A EP02010121 A EP 02010121A EP 1260360 B1 EP1260360 B1 EP 1260360B1
Authority
EP
European Patent Office
Prior art keywords
printing
color
ink
acceptor properties
particles
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 - Lifetime
Application number
EP02010121A
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German (de)
English (en)
French (fr)
Other versions
EP1260360A2 (de
EP1260360A3 (de
Inventor
Heiner Dr. Pitz
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
Publication of EP1260360A2 publication Critical patent/EP1260360A2/de
Publication of EP1260360A3 publication Critical patent/EP1260360A3/de
Application granted granted Critical
Publication of EP1260360B1 publication Critical patent/EP1260360B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme

Definitions

  • the invention relates to a method for applying printing inks to a printing substrate.
  • the lithographic printing is based on utilizing the immiscibility of oil and water on a printing form, whereby the lipophilic solution or the ink or ink is captured by the image-forming areas and the water or hydrophilic solution by the non-image forming areas of the printing area.
  • the suitably prepared print area is wetted with hydrophilic and lipophilic substance or solution, especially water and ink or paint
  • the non-image areas preferentially retain the hydrophilic substance or solution and repel the lipophilic substances while the imagewise areas repel the lipophilic ones Take solution or ink or paint and repel the hydrophilic substances.
  • the lipophilic substance is then suitably transferred to the surface of a material on which the image is to be fixed, for example, paper, cloth, polymers and the like.
  • aluminum has been used as a substrate for printing plates.
  • the aluminum is first subjected to a graining process and then a subsequent anodization process.
  • the anodization serves to provide an anodic oxide layer whose adhesion is improved by the grain. Graining enhances the hydrophilic properties of the background of the printing plate.
  • a strong acid such as sulfuric or phosphoric acid is usually used to subsequently make the surface hydrophilic by another method such as a thermal silicization method or so-called electrosilication.
  • a large number of radiation-sensitive materials are known which are suitable for generating images in the use of the lithographic printing method, in that they provide an image area used for printing after exposure and optionally required development and fixing can be.
  • photopolymerizable substances can be used for this purpose.
  • the above-described arrangement is subjected to imagewise exposure by selectively supplying energy. This can be done for example by means of the exposure through a mask with UV light or by direct writing with a laser.
  • the lithographic printing plates of the type described above are usually treated with a developing solution, which is typically an aqueous alkaline solution with organic additives.
  • a developing solution typically an aqueous alkaline solution with organic additives.
  • oxide ceramics which are present for example in the form of coatings on a printing plate, are used.
  • the plate surface TiO 2 and ZnO 2 which may be present in ceramic form both pure and with other metallic additives in different mixing ratios.
  • This surface is hydrophobic when unexcited and can be rendered hydrophilic by irradiation with ultraviolet light. Imaging is now done by illuminating the entire surface of the plate with ultraviolet light and masking areas of ink which are to be printed.
  • Such a printing press is for example from the DE 42 34 928 known.
  • a printing machine in so-called satellite construction, in which the individual inking units are arranged around a central blanket cylinder, such as satellites. Although this significantly reduces the length of the printing press, the individual printing inks must still be applied in individual inking units. In addition, it is not possible with this machine to print on the back of the substrate.
  • a stamp printing method in which printing ink is transferred from the raised areas to a substrate by means of a stamp having raised and recessed areas.
  • this stamp over its entire surface, ie provided on the raised and non-raised areas with a so-called activated surface, which is then provided by means of a masking process with so-called orientation materials.
  • orientation materials may differ depending on the masking in the individual mask areas.
  • the plunger is then immersed in a suitable liquid, suitable counterparts can be arranged on the orienting materials. To transfer of these counterparts on a receiving surface, this receiving surface is immersed in a liquid and pressed the plunger within this liquid on the receiving surface.
  • the counterparts deposited on the punch at the raised areas can be transferred to the receiving surface.
  • the auxiliary liquid in which the transfer to the receiving surface serves to provide the stamp surface immediately after transfer immediately with orientation materials. This is achieved by mixing the auxiliary liquid with orientation substances.
  • the receiving surface may be used to form an etch mask or sensor.
  • the object of the present invention is to propose a simplified printing method, which also allows a shorter design of the printing press.
  • the surface of a printing plate is pretreated in accordance with the ink to be applied in the individual regions of the surface in such a way that these regions are suitable for accepting a particular printing ink.
  • This can be achieved with specifically designed printing inks that attach only certain color particles, such as dyes, pigments, color molecules or colored particles to the correspondingly pretreated areas of the printing plate.
  • this means that in the planographic printing process in question, in particular the offset printing process, in a first process step, the surface of the planographic printing plate pretreated, that is marked so that only the ink corresponding to the marking can attach to defined areas.
  • a mark for cyan, a mark for magenta, one for yellow and one for black be applied. If the printing form is then brought into contact with a mixture containing the color particles cyan, magenta, yellow or black corresponding to the markings, the color particles associated with the markings are deposited at the corresponding points of the printing plate and can be used in a further method step be transferred directly or indirectly to the substrate.
  • markings on the printing form it is particularly possible to treat the printing form with a laser beam and thereby produce geometric markings on the printing plate, which allow that in the so marked areas of the printing form can arrange only those color particles, in turn have the corresponding geometric properties.
  • This approach to marking the printing plates can also be referred to as a "key lock principle", wherein on the printing form a "lock” is applied, which can be occupied only with such a color particle having a matching key.
  • the printing inks corresponding to the markings must each have the molecules or molecular parts corresponding to the functional molecule. This will ensure that selected inks then hit the marked area be attached when a colorant corresponding to the marking is associated with the printing forme in the area of the marking.
  • the printing method proposed according to the invention has the advantage that, in contrast to the conventional technology in the planographic printing method, it becomes possible for the first time to accommodate different color separations on a single printing form and thus significantly reduce the number of inking units required in a printing press. This reduces the technical effort required for printing considerably while at the same time a reduction in the cost of the printing press can be achieved by omitting inking unit components.
  • FIG. 1 is schematically illustrated the inventively provided process flow.
  • a marking is initially introduced into a surface of a printing form which corresponds to a color to be printed in a certain area of the printing form.
  • a plurality of areas with fixed color acceptor properties are produced on the surface of a printing form.
  • the surface of the printing form is then brought into contact with color particles, the color particles having properties which correspond to the markings on the printing form, ie, to the color acceptor properties of the areas applied to the printing plate. This makes it possible to attach certain so marked color particles at defined locations on the printing plate.
  • the printing for example, as is already common practice, be designed as a rotating offset printing cylinder, wherein the printing cylinder is occupied in a already used today, conventional inking with color.
  • the ink used in the inking unit has color particles which have properties that correspond to the markings applied on the surface of the printing cylinder, so that the individual color particles can be deposited precisely at the marked locations of the printing surface.
  • the color image applied to the printing plate can be transferred directly or indirectly to a printing material.
  • the printing plate surface can be cleaned of unwanted color particles not deposited on the markings of the printing plate.
  • the printing form can be freed of unwanted or unnecessary color particles, which is preferably done with the aid of a physical wiping or doctor blade operation can be performed.
  • This step may be necessary in particular if the colors are not transported in a conventional inking unit but are transferred to the plate by means of an immersion bath or a spraying technique.
  • FIG. 2 is a schematic diagram and shown using the example of a short inking unit, a use of a printing form.
  • a printing form cylinder 20 is provided which forms a printing gap 21 together with an impression cylinder 22, through which a printing material 24, such as a paper sheet or a paper web, is transported therethrough.
  • a component 25 for applying the printing ink to the printing form cylinder 20 is provided, which consists in the present example of an applicator roller 26, an anilox roller 28 and a paint container 30.
  • an applicator roller 26 an anilox roller 28 and a paint container 30.
  • From the ink container 30, a mixture of different printing inks containing the required colorant particles is transferred to the anilox roller 28.
  • the color particles are designed so that they are recorded at the locations of the printing forme cylinder 20, which corresponds to their color acceptor property.
  • a mixture of the colors cyan, magenta, yellow and black can be provided in the ink container 30, the respective individual colors being assigned different surface acceptor properties corresponding to the
  • the basic principle of offset printing with hydrophilic and hydrophobic regions can remain unaffected as color-leading or color-repelling regions.
  • electrostatic or other forces could act or act in addition.
  • the color or pigment particles are in a common mixture.
  • the color particles self-locate and seek their surface-accepting properties corresponding surface areas with the corresponding color acceptor properties.
  • the surface of the printing form 20 inside or outside a printing press can be pretreated by means of a laser 32 emitting a laser beam 34 in such a way that the surface properties corresponding to the color particles used are generated.
  • a geometric marking of the printing plate 20 can be used for this purpose.
  • a plurality of markings 35, 36, 37, 38 is applied to the printing form 20.
  • the different markings 35, 36, 37, 38 represent a respective different geometric marking of the printing plate 20, which allows that at these locations only one particular ink, namely attached to the respective marking 35, 36, 37, 38 attached can be.
  • the marking 38 may represent the color cyan, the mark 37 yellow, the mark 36 the color magenta and the mark 38 black, which means that only the corresponding dye can be attached to the respective mark.
  • the geometric markings 35, 36, 37, 38 in turn consist of individual points 40, which can be applied by means of the laser 32.
  • the characteristic features of the geometric marking can be made two-dimensional or three-dimensional.
  • a laser system with 10 micron resolution shapes with a diameter of about 30 microns for example, a diode laser with a laser wavelength of 860 nm can be used. This corresponds to a resolution of one dot / ⁇ m a point on the printing plate and thus about 30 microns. Thus, a resolution of about 600 dpi can be achieved. In FIG. 3 this resolution is characterized by the distance d.
  • cyclodextrin molecules can be used for the geometric identification of the color particles according to the invention.
  • Cyklodextrins are sugar molecules with characteristic shape and size. They also have the advantage that they are biodegradable, toxicologically safe and can be produced by enzymatic degradation of starch on a large scale inexpensively and in any purity.
  • cyclodextrins have a hydrophobic cavity, this can also be used to store or store color particles. In addition to the use as geometric identification molecule on the color particles, it is also conceivable to use cyclodextrins as geometric or functional identification molecules in the printing form.
  • Another class of materials for geometric identification color particles are pieces of fiber, complex forming Supramolekül phenomenon or macromolecules in a suitable shape and size, to which then the dyes, pigments or other color particles, eg.
  • the dyes, pigments or other color particles eg.
  • the Cyklodextrinmoleküle described above are attached, in which case, in particular, the cyclotriveratrylenes should be noted.
  • these supramolecular components it is possible to complex the pigment particles used today, so that the pigment production would hardly have to be changed compared to conventional paints.
  • functional groups can be coupled to such supramolecular components, so that the molecules can be selectively produced (molecular design).
  • Polyelectrolyte capsules can be chemically functionalized and combined with coloring groups. They can also serve as dye containers.
  • a very important advantage is that polyelectrolyte capsules in Sizes from a few nm to a few hundred microns can be produced. It is thereby possible to adapt the "color production" to the respective technical approaches in the production of the markings on the printing plate. In particular, it is intended here at different spatial resolutions when using different exposure wavelengths.
  • the printing plate 20 functionally, ie to identify by the provision of certain chemical groups at certain points of the printing plate 20.
  • These markings 42, 43, 44, 45 are different from each other and allow the attachment of dyes or pigments having the corresponding markings 42 ', 43', 44 ', 45'.
  • this possibility of attachment by the addition arrows a is shown.
  • the markings 42, 43, 44, 45 on the pressure plate 20 can be, for example, molecular chains with correspondingly functional groups which can be coated with the corresponding markings of the dyes or pigments 42 ', 43', 44 '45'.
  • the markings 42, 43, 44, 45 of the printing plate 20 and the correpondierenden markings 42 ', 43', 44 ', 45' of the dyes or pigments can be made of molecules having a coupling process, analogous to the the base sequences in a DNA chain is to be considered.
  • FIG. 5 is shown a way to apply the markings on the surface of a printing plate 20.
  • the printing form 20 is produced so that a plurality of layers are applied to a base 46, which already contain the respective markings 42, 43, 44, 45.
  • FIG. 1 shown laser radiation, it is now possible to remove the top layer of the printing form 20 so far that each of the desired marking is located on the surface of the printing plate 20. This makes it possible to attach different color molecules at the points 48, 50 and 52, which correspond to the particular marking present there.
  • FIG. 6 Another possibility for generating the marking on the printing form 20 is in FIG. 6 shown.
  • the printing plate 20 is hereby made so that on a base 46 a additional layer 54 is applied.
  • This layer 54 includes capsules 56 that are tightly packed in layer 54 and that contain the various indicia 42, 43, 44, 45 required for the printing process.
  • the capsules 56 may be selectively broken so that the tag may surface. Since the markings 42, 43, 44, 45 are each housed in capsules 56 which have different properties, in particular different wall properties, it is possible to selectively control only by controlling the intensity of the laser beam or wavelength and by controlling the applied field Break capsules so that selectively certain labels can escape from the capsules.
  • the ink particles in the ink must not adhere to one another and should be able to diffuse easily to the identification points in order to ensure a self-alignment.
  • the color should then be as thin as possible.
  • a job using a paint spray can be very well implemented.
  • it is possible to easily remove the unnecessary paint wherein the forces must be designed so that the binding forces to the markings are greater than the wiping force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Methods (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Ink Jet (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP02010121A 2001-05-23 2002-05-10 Verfahren zum Aufbringen von Druckfarben auf einen Bedruckstoff Expired - Lifetime EP1260360B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10125545A DE10125545A1 (de) 2001-05-23 2001-05-23 Druckverfahren und Vorrichtung
DE10125545 2001-05-23

Publications (3)

Publication Number Publication Date
EP1260360A2 EP1260360A2 (de) 2002-11-27
EP1260360A3 EP1260360A3 (de) 2004-01-07
EP1260360B1 true EP1260360B1 (de) 2010-03-17

Family

ID=7686132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02010121A Expired - Lifetime EP1260360B1 (de) 2001-05-23 2002-05-10 Verfahren zum Aufbringen von Druckfarben auf einen Bedruckstoff

Country Status (10)

Country Link
US (1) US6935235B2 (xx)
EP (1) EP1260360B1 (xx)
JP (1) JP2003054148A (xx)
CN (1) CN1256238C (xx)
AT (1) ATE461054T1 (xx)
CA (1) CA2385383A1 (xx)
CZ (1) CZ20021406A3 (xx)
DE (2) DE10125545A1 (xx)
HK (1) HK1051991A1 (xx)
IL (1) IL149766A0 (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060260493A1 (en) * 2005-05-19 2006-11-23 Travis Christopher J Printing conductive inks
US7709185B2 (en) * 2006-03-24 2010-05-04 Heidelberger Druckmaschinen Ag Method for imaging a lithographic printing form
GB0702092D0 (en) * 2007-02-02 2007-03-14 Fracture Code Corp Aps Graphic Code Application Apparatus and Method
CN102774153A (zh) * 2011-05-10 2012-11-14 上海协承昌化工有限公司 Pvc基材表面图案层的形成工艺
DE102013000748A1 (de) * 2012-02-03 2013-08-08 Heidelberger Druckmaschinen Ag Schmiergrenzenkontrollfeld

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213787A (en) * 1956-01-26 1965-10-26 Minnesota Mining & Mfg Simultaneous multicolor printing
US3368483A (en) * 1965-05-10 1968-02-13 Duriron Co Two-color lithographic printing form, method of preparing same, and method of use
US3426679A (en) * 1966-10-11 1969-02-11 United Aircraft Corp Multi-color printing in a single impression
JPS5526461B1 (xx) * 1971-01-04 1980-07-14
US4248959A (en) * 1978-12-07 1981-02-03 American Hoechst Corporation Preparation of diazo printing plates using laser exposure
DE3731835A1 (de) * 1987-09-22 1989-03-30 Siemens Ag Laserstrahl-induziertes farbdrucken
DE3835091A1 (de) * 1988-10-14 1990-04-19 Roland Man Druckmasch Druckform
US5191834A (en) 1988-10-14 1993-03-09 Man Roland Druckmaschinen Ag Printing system with printing form having a ferro-electric layer
DE69203148T3 (de) 1991-05-10 2003-01-16 Fuji Photo Film Co Ltd Druckmaschine.
JP3104307B2 (ja) * 1991-06-28 2000-10-30 ソニー株式会社 グラビア印刷用版材
DE4234928A1 (de) 1992-10-16 1994-04-21 Heidelberger Druckmasch Ag Vorrichtung und Verfahren zur Dämpfung von mechanischen Schwingungen von Druckmaschinen
WO1997006013A1 (en) * 1995-08-04 1997-02-20 International Business Machines Corporation Lithographic surface or thin layer modification
JP3377215B2 (ja) * 1996-09-06 2003-02-17 インターナショナル・ビジネス・マシーンズ・コーポレーション 化学的に定義されたボディを配向析出する方法
DE69805385T2 (de) * 1997-10-24 2002-09-12 Fuji Photo Film Co Ltd Vorrichtung zur Herstellung einer Druckplatte und Drucker und Drucksystem die diese Vorrichtung verwenden
DE19830491A1 (de) * 1997-10-30 1999-05-06 Heidelberger Druckmasch Ag Flächiges Substrat zur Herstellung von mehrfarbigen Strukturen darauf
US6089853A (en) * 1997-12-24 2000-07-18 International Business Machines Corporation Patterning device for patterning a substrate with patterning cavities fed by service cavities

Also Published As

Publication number Publication date
IL149766A0 (en) 2002-11-10
EP1260360A2 (de) 2002-11-27
JP2003054148A (ja) 2003-02-26
ATE461054T1 (de) 2010-04-15
DE50214277D1 (de) 2010-04-29
HK1051991A1 (en) 2003-08-29
DE10125545A1 (de) 2002-11-28
US20020176940A1 (en) 2002-11-28
EP1260360A3 (de) 2004-01-07
US6935235B2 (en) 2005-08-30
CA2385383A1 (en) 2002-11-23
CZ20021406A3 (cs) 2003-01-15
CN1256238C (zh) 2006-05-17
CN1386643A (zh) 2002-12-25

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