EP0759582B1 - Verfahren zur Übertragung von Druckfarbe und Vorrichtung und Druckmaschinen zur Durchführung des Verfahrens - Google Patents

Verfahren zur Übertragung von Druckfarbe und Vorrichtung und Druckmaschinen zur Durchführung des Verfahrens Download PDF

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Publication number
EP0759582B1
EP0759582B1 EP96112576A EP96112576A EP0759582B1 EP 0759582 B1 EP0759582 B1 EP 0759582B1 EP 96112576 A EP96112576 A EP 96112576A EP 96112576 A EP96112576 A EP 96112576A EP 0759582 B1 EP0759582 B1 EP 0759582B1
Authority
EP
European Patent Office
Prior art keywords
intermediate carrier
substrate
ink
transfer
cylinder
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
EP96112576A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0759582A2 (de
EP0759582A3 (de
Inventor
Anton Rodi
Norbert Dr. Freyer
Hans Klingel
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.)
Eastman Kodak Co
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 EP0759582A2 publication Critical patent/EP0759582A2/de
Publication of EP0759582A3 publication Critical patent/EP0759582A3/de
Application granted granted Critical
Publication of EP0759582B1 publication Critical patent/EP0759582B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/169—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer with means for preconditioning the toner image before the transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme

Definitions

  • the invention relates to methods for the transmission of solid or liquid printing ink from an intermediate carrier, for example a transfer cylinder, on another intermediate carrier or on a substrate, such as paper, as well as several Devices and printing machines for carrying out these processes.
  • an intermediate carrier for example a transfer cylinder
  • a substrate such as paper
  • the tape is coated with Teflon, it is practicing in principle at least low adhesive forces on the toner, so that a transmission efficiency of at least in the first step less than 100% is assumed, similar to that in the magazine "OQE" described technology.
  • the invention is based on the object to create transmission techniques that are not only one transfer on paper, but also with a transfer on an intermediate carrier a transmission efficiency of always have practically 100%.
  • a further intermediate carrier has one outer elastic layer, e.g. B. a rubber layer, in the release agent is contained, the release agent being on the surface of the rubber layer is driven when the other subcarrier and that Substrate pressed against each other.
  • the Loss of release agent during operation can be caused by a corresponding feeder can be compensated, or that Release agent is added to the paint so that it is in operation establishes an equilibrium in the release agent guidance.
  • An intermediate carrier is understood to mean a device which has a surface on which a printed image in the form a color distribution, transported and is then dismantled again, e.g. B. a rotating Transfer cylinder or one rotating around a cylinder Ribbon, the color transfer optionally to another Intermediate carrier or on a substrate.
  • a release agent is particularly advantageous with an intermediate carrier in the form of a Rubber transfer cylinder that holds the liquid ink on transfers a substrate.
  • An elastic e.g. B. made of rubber or a similar material existing layer of Transfer cylinder, which is for a uniform Color transfer to an uneven substrate surface can nestle without exerting excessive pressure, also serves as a carrier for the release agent that is in the preferred embodiment is silicone oil.
  • the Absorption capacity of the elastic layer for the release agent can be due to diffusion and / or penetration of the Release agent based in micropores of the elastic layer.
  • the melting in the different embodiments or heat sources used for fixing can e.g. B. Be infrared emitters that the radiation on the Bundle the intermediate carrier or the substrate.
  • the place on the Intermediate carrier on which the radiation is focused should as close as possible to the point of transfer of the Printing ink on the further intermediate carrier or the substrate Lying, so on the way to the transfer point if possible little heat flows onto the intermediate carrier or the printing ink does not need to be heated much more than it is for the transfer is required.
  • the most suitable for bundling are lasers, their Radiation is converted into heat at the point of impact.
  • suitable choice of radiation wavelength can be achieved that the radiation from the ink with a higher Efficiency and with the intermediate carrier or the substrate is absorbed at a lower efficiency, so that the Intermediate carrier and the substrate heated as little as possible become.
  • An even more targeted warming is possible with the help of a Arrays of lasers or laser diodes possible in according to the transferred print image in order to heat only the positions carrying the ink.
  • the necessary to generate such a heating pattern Information is from the control of the Printheads known. With a corresponding resolution of the laser diode array can perform pixel-perfect heat transfer be carried out, and with the help of the gray value information the respective ink layer thickness can be taken into account.
  • the heat input can be dimensioned so that the Ink when transferring to paper regardless of other parameters have the same temperature everywhere and reliable color transfer is guaranteed.
  • FIG. 1 are a printing unit with a Transfer cylinder 1, a schematically shown Inking unit 2 and an impression cylinder 3 and a Substrate 4 shown. Opposite the surface of the Transfer cylinder 1 between the inking unit 2 and the A heat source 5 is arranged on the substrate 4 and opposite the printed side of the substrate 4 is a heat source 6 arranged.
  • ink particles 7 become one achieving the corresponding distribution on the print image Transfer cylinder 1 applied.
  • the color particles 7 are shown in the figure as balls of equal size, in the Practice shaped irregularly. While the color particles 7 be transported further by the transfer cylinder 1, they are from the heat source 5 directed at it from the outside melted so that coherent islands of color 8 arise.
  • the ink adheres to the ink islands 8 as still before just selectively on the transfer cylinder 1, like shown schematically.
  • this is selective Liability does not change significantly, is the intensity of the Melting is not critical. It is essential that the plasticity in the color islands 8 increases from the inside out, their outer surface has not yet completely melted should. Due to the glassy melting behavior of Common solid colors can meet these conditions relatively easy to meet.
  • the substrate 4 on the Transfer cylinder 1 pressed, the printing ink on the Substrate 4 is transferred. Since the ink is on your from side melted away from the transfer cylinder 1 has been, the color islands 8 are contiguous and easily transferred to the substrate 4. Therefore, the Contact forces between the substrate 4 and the Transfer cylinder 1 can be kept small. Subsequently the printing ink is fixed using the heat source 6, in many cases, it is sufficient that the color islands 8 on the Warm the surface to smooth it. Alternatively or in addition, the substrate 4 before passing through the Transfer cylinder 1 by a not shown Facility to be preheated.
  • Fig. 3 are a printing unit with a first Transfer cylinder 30, a second Transfer cylinder 31, an inking unit 32 and one Impression cylinder 33 and a substrate 34 are shown. Opposite the surface of the first transfer cylinder 30 between the inking unit 32 and the second Transfer cylinder 31, a heat source 35 is arranged, and opposite the surface of the second Transfer cylinder 31 between the first Transfer cylinder 30 and the substrate 34 is one Heat source 36 arranged.
  • the second transfer cylinder 31 has a rubber jacket 37 containing silicone oil.
  • ink particles 38 corresponding to one latent printed image which is based on an unspecified Way of a schematically illustrated write head 39 is generated on the first transfer cylinder 30 applied.
  • Transfer of the ink to the second Transfer cylinder 31 is carried out in the same way as in FIG Connection with Fig. 1 described.
  • the second Transfer cylinder 31 is the printing ink by means of Heat source 36 and / or by heating the Transfer cylinder 31 completely melted and then transferred to the substrate 34.
  • first transfer cylinders 50 one second transfer cylinder 51, an impression cylinder 52 and a substrate 53 are shown.
  • the first four Transfer cylinders 50 are one behind the other on the circumference of the second transfer cylinder 51 arranged, and on the circumference each first transfer cylinder 50 are each one Inking unit 54 and a write head 55 are arranged. Besides, is one at the circumference of each transfer cylinder 50, 51 Heat source arranged.
  • the printing inks are essentially as in Connection with Fig. 3 described transmitted, with one revolution of the second Transfer cylinder 51 transfer all four inks become.
  • a first transfer cylinder 60, a second transfer cylinder 61, an impression cylinder 62 and a substrate 63 are shown.
  • the scope of the second Transfer cylinder 61 is four times the size of the first transfer cylinder 60.
  • On the circumference of the first Transfer cylinders 60 are four inking units 64 and one Print head 65 arranged.
  • everyone is on the scope Transfer cylinders 60, 61 each have a heat source arranged.
  • the printing inks are essentially as in Connection with Fig. 3 described transmitted, with each revolution of the Transfer cylinder 60 an ink on the Transfer cylinder 61 is transferred.
  • heat sources come e.g. B. infrared heater in Consideration. Further, particularly suitable heat sources are in Connection with Fig. 7 and 8 described.
  • FIG. 7 schematically shows a transfer cylinder 70, a Substrate 71, which is transported in the direction of the arrow, and a laser 72 for externally melting ink, the from the transfer cylinder 70 to the substrate 71 is transmitted.
  • the laser 72 is e.g. B. a Carbon dioxide laser, its radiation along the dashed line Line in the gap between the transfer cylinder 70 and the substrate 71 where it is absorbed by the ink and is converted into heat.
  • At the pointed converging Surfaces of transfer cylinder 70 and substrate 71 finds multiple reflections towards the Transfer point instead, so the radiant energy is very is brought close to the transfer point.
  • the Radiation is evenly spread over the lens or mirror Length of the gap is distributed, and / or it is along the Length of the transfer cylinder 70 a plurality of lasers 72 intended.
  • the radiation is transferred by melting bundled as much as possible, d. H. as narrow as possible linear region along the transfer cylinder 70 concentrated.
  • This also applies to a case in which the radiation is not directly supported by reflection the gap between the transfer cylinder 70 and the Substrate 71 is directed, but a (as small as possible) Piece in front of the transfer point.
  • a linear radiation area can be lasered with reach a width in the micrometer range, so that the Printing ink passing the irradiation area only very much radiation energy is briefly applied. Thereby ensures that the ink is actually only on warmed their outer surface and thus only on the Surface is melted.
  • the radiation definitely absorbed by the ink. polymers Dyes also absorb short-wave light, so that z. B. ND-YAG lasers can also be used.
  • the Short-wave light has the advantage of targeting the individual Color islands are heated on the transfer cylinder 70 can, with maximum protection of the substrate 71 and minimal Heating of the transfer cylinder 70. The latter aspect is particularly important when the transfer cylinder 70 is a Development cylinder is the one at a warming on the Transfer point must then be cooled again to ensure proper development.
  • FIG. 8 schematically shows a transfer cylinder 80 a Substrate 81, which is transported in the direction of the arrow, and a Laser diode array 82 for external melting of printing ink, from the transfer cylinder 80 to the substrate 81 is transmitted.
  • the laser diode array 82 extends lengthwise the length of the transfer cylinder 80, being close to Transfer cylinder 80 and as close to the Transfer point is arranged on the substrate 81.
  • the laser diode array 82 is controlled by a control device 84 driven by a not shown Printing machine computer the same image information including the grayscale values received by the Print heads of the printing unit are fed.
  • the Control device 84 under-controls laser diode array 82 Taking into account the time offset so that the Color layer on the transfer cylinder 80 accordingly their area distribution and their respective thickness with heat is supplied.
  • Targeted heating is most accurate when the Pixel resolution of the laser diode array 82 is equal to that Printhead resolution is.
  • an array with single controllable laser diodes in pixel spacing can, for. B. also a single, continuously radiating laser with one scanning mirror and a switchable filter used become.
  • a structure similar to that of the laser diode array 82 and driven laser diode array 83 can behind the Transfer point may be arranged over the substrate 81.
  • the Laser diode array 83 smoothes or fixes the on the substrate 81 transferred ink evenly according to your Distribution on the substrate 81 without this directly is heated.
  • one or several continuously operating lasers are used z.
  • All heating methods described above can the laser wavelength and the composition of the printing ink be coordinated so that the printing ink with is heated to the highest possible efficiency, while at the same time the transfer cylinder or the paper is heated as little as possible. That way it dries Paper not out.
  • one or several continuously operating lasers are used z.
  • All heating methods described above can the laser wavelength and the composition of the printing ink be coordinated so that the printing ink with is heated to the highest possible efficiency, while at the same time the transfer cylinder or the paper is heated as little as possible. That way it dries Paper not out.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)
  • Ink Jet (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Printing Methods (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
EP96112576A 1995-08-17 1996-08-03 Verfahren zur Übertragung von Druckfarbe und Vorrichtung und Druckmaschinen zur Durchführung des Verfahrens Expired - Lifetime EP0759582B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19530284A DE19530284C2 (de) 1995-08-17 1995-08-17 Verfahren und Vorrichtungen zur Übertragung von Druckfarbe
DE19530284 1995-08-17

Publications (3)

Publication Number Publication Date
EP0759582A2 EP0759582A2 (de) 1997-02-26
EP0759582A3 EP0759582A3 (de) 1998-04-15
EP0759582B1 true EP0759582B1 (de) 2002-04-24

Family

ID=7769724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96112576A Expired - Lifetime EP0759582B1 (de) 1995-08-17 1996-08-03 Verfahren zur Übertragung von Druckfarbe und Vorrichtung und Druckmaschinen zur Durchführung des Verfahrens

Country Status (7)

Country Link
US (1) US6386696B1 (ja)
EP (1) EP0759582B1 (ja)
JP (1) JPH09109541A (ja)
CN (1) CN1061001C (ja)
AU (1) AU723381B2 (ja)
DE (2) DE19530284C2 (ja)
ES (1) ES2176381T3 (ja)

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JP2001315426A (ja) * 2000-05-11 2001-11-13 Fuji Photo Film Co Ltd インクジェット式印刷方法及び印刷装置
JP4920820B2 (ja) * 2000-10-20 2012-04-18 株式会社シンク・ラボラトリー 相変化インクを使用するグラビア印刷方法
DE10106415A1 (de) * 2001-02-12 2002-08-14 Heidelberger Druckmasch Ag Druckmaschine und Druckverfahren
EP1567344B1 (de) 2002-12-06 2007-04-04 Koenig & Bauer Aktiengesellschaft Druckmaschinen mit mindestens einem farbträger
DE102004003130A1 (de) * 2004-01-15 2005-08-04 Ebe Hesterman Digitale Druckmaschine zum beidseitigen Bedrucken von Bogen
EP1851059A2 (en) * 2005-02-24 2007-11-07 E.I. Dupont De Nemours And Company Selected textile medium for transfer printing
ITMO20060058A1 (it) * 2006-02-21 2007-08-22 Mira Di Algeri Maris Metodo per decorare, relativo apparato ed elemento
US8869698B2 (en) * 2007-02-21 2014-10-28 R.R. Donnelley & Sons Company Method and apparatus for transferring a principal substance
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
ES2556250T3 (es) * 2006-02-21 2016-01-14 System S.P.A. Procedimiento y aparato para la decoración con material en polvo
US8733248B2 (en) 2006-02-21 2014-05-27 R.R. Donnelley & Sons Company Method and apparatus for transferring a principal substance and printing system
WO2007098179A2 (en) * 2006-02-21 2007-08-30 Cyman Theodore F Jr Systems and methods for high speed variable printing
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
WO2009025814A1 (en) * 2007-08-20 2009-02-26 Rr Donnelley Method and device for ink-jet printing
US9701120B2 (en) 2007-08-20 2017-07-11 R.R. Donnelley & Sons Company Compositions compatible with jet printing and methods therefor
DE102009009043B4 (de) * 2009-02-16 2011-01-27 OCé PRINTING SYSTEMS GMBH Anordnung zum Fixieren von Druckbildern auf einem Bedruckstoff
DE102012023389A1 (de) * 2012-06-15 2013-12-19 Heidelberger Druckmaschinen Ag Verfahren zum Reinigen eines Zwischenträgers für den indirekten Druck
US9067449B2 (en) * 2013-06-13 2015-06-30 Canon Kabushiki Kaisha Image recording method by serially transferring intermediate images
DE102015211537A1 (de) * 2014-07-24 2016-01-28 Heidelberger Druckmaschinen Ag Intellectual Property Verfahren zum Transfer eines Druckbildes auf ein Substrat
RU2569344C1 (ru) * 2014-09-17 2015-11-20 Владимир Васильевич Левенков Устройство для нанесения покрытий из порошкообразных материалов на металлическую полосу
JP6413736B2 (ja) * 2014-12-15 2018-10-31 富士ゼロックス株式会社 印刷制御装置、印刷システム及びプログラム
CN107430370B (zh) * 2015-03-06 2021-04-09 惠普印迪格公司 用于液体电子照相印刷的图像转移
EP3230802B1 (en) 2015-04-22 2021-04-07 HP Indigo B.V. Spatially selective heating of intermediate transfer member
RU2631291C1 (ru) * 2016-04-22 2017-09-20 Сергей Алексеевич Павлюков Устройство для нанесения покрытий из порошкообразных материалов на металлическую полосу
WO2021096506A1 (en) * 2019-11-14 2021-05-20 Hewlett-Packard Development Company, L.P. Image formation with electroosmotic liquid removal

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Also Published As

Publication number Publication date
CN1061001C (zh) 2001-01-24
DE59609119D1 (de) 2002-05-29
DE19530284A1 (de) 1997-02-20
DE19530284C2 (de) 2000-12-14
CN1144160A (zh) 1997-03-05
JPH09109541A (ja) 1997-04-28
EP0759582A2 (de) 1997-02-26
US6386696B1 (en) 2002-05-14
AU723381B2 (en) 2000-08-24
EP0759582A3 (de) 1998-04-15
AU6210196A (en) 1997-02-20
ES2176381T3 (es) 2002-12-01

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