EP1162079A2 - Vorrichtung zum Härten von Tinten mittels UV-Licht - Google Patents

Vorrichtung zum Härten von Tinten mittels UV-Licht Download PDF

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Publication number
EP1162079A2
EP1162079A2 EP01117496A EP01117496A EP1162079A2 EP 1162079 A2 EP1162079 A2 EP 1162079A2 EP 01117496 A EP01117496 A EP 01117496A EP 01117496 A EP01117496 A EP 01117496A EP 1162079 A2 EP1162079 A2 EP 1162079A2
Authority
EP
European Patent Office
Prior art keywords
point
ink
support
ultraviolet
printing
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
EP01117496A
Other languages
English (en)
French (fr)
Other versions
EP1162079B1 (de
EP1162079A3 (de
Inventor
Paul Morgavi
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.)
Gemplus SA
Original Assignee
Gemplus Card International SA
Gemplus SA
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 Gemplus Card International SA, Gemplus SA filed Critical Gemplus Card International SA
Publication of EP1162079A2 publication Critical patent/EP1162079A2/de
Publication of EP1162079A3 publication Critical patent/EP1162079A3/de
Application granted granted Critical
Publication of EP1162079B1 publication Critical patent/EP1162079B1/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
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0064—Digital printing on surfaces other than ordinary paper on plastics, horn, rubber, or other organic polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0076—Digital printing on surfaces other than ordinary paper on wooden surfaces, leather, linoleum, skin, or flowers

Definitions

  • the invention relates to the field of printing based on photosensitive inks, i.e. inks that can be dried or polymerized by radiation of light, in particular by radiation ultraviolet.
  • a crippling disadvantage of inks based on solvent is the harmfulness of the solvents used, of the type acetone. Printing with such inks requires complex devices collecting solvents rejected and important implementation precautions.
  • Polymer inks do not have these disadvantages and are particularly suitable for a point by point printing, in particular by inkjet.
  • these inks have a fluidity which allows to deposit mechanically, in particular according to a offset process, very large ink drops fine or to project drops point by point on a support.
  • the final fixation of polymer inks is performed during a so-called crosslinking step ink following the deposition of the ink drops.
  • Crosslinking consists of polymerizing or crystallize the ink, the polymers constituting the ink binding together to form polymer chains longer and attach to the support. A stage of crosslinking therefore makes it possible to solidify the ink and attach to the support.
  • the supports made of plastic such than polyvinyl chloride (PVC), polyethylene (PE), poly-ethyl tetraethylene (PET), polycarbonates (PC), acrylonitrile-butadiene-styrene (ABS) and other organic polymers are suitable naturally to a printing by polymer ink, the ink polymers and the carrier polymers themselves securely fixing between them during crosslinking.
  • PVC polyvinyl chloride
  • PE polyethylene
  • PET poly-ethyl tetraethylene
  • PC polycarbonates
  • ABS acrylonitrile-butadiene-styrene
  • other organic polymers are suitable naturally to a printing by polymer ink, the ink polymers and the carrier polymers themselves securely fixing between them during crosslinking.
  • Crosslinking is obtained by exposure of the support inked under ultraviolet radiation.
  • UV ink ultraviolet radiation
  • Energy of ultraviolet photons allows the polymerization of polymer chains between them.
  • the support must be exposed under a radiation power ultraviolet and for a sufficient time, so that the ink fixes well to the support and hardens completely.
  • FIGs 1 and 2 schematize techniques known printing based on crosslinkable UV ink.
  • the figure 1 shows a full color offset printing of a support.
  • Support 10 advances between a cylinder drive 15 and rollers 11, 12, 13 and 14 contact printing.
  • Each roll there or 12 or 13 or 14 contains a frame of the image to be printed.
  • the hollow of the frames of each roll are inked with a black or colored ink, including cyan, magenta or yellow.
  • Several color screens are thus deposited on the support to constitute a final image in polychromy.
  • the inking step is followed by a step of crosslinking by continuous exposure 19 of the support 10 under an ultraviolet lamp 18.
  • offset printing can be monochrome by providing a single black or colored ink roller.
  • Figure 2 shows a printing process polychrome by inkjet.
  • Several tanks 21, 22, 23 and 24 containing the black polymer inks and different colors feed at least one nozzle ejecting ink drops, each tank having preferably its own line of ejection nozzles, the impression line being transverse to the direction of moving the support.
  • Ink drops settle point by point on the support, a device for IT support and programming of the image to print controlling the ejection of the drops by each nozzle of the line with a possible control ejected drop volume.
  • the computer system defines the spatial locations of the points to be inked and controls the ejection or non-ejection of the drops according to this location.
  • FIG. 2 illustrates an alternative in which each inking step is followed by a crosslinking step to dry each ink before subsequent color inking different.
  • the printing device of figure 2 therefore includes in this example four lamps with ultraviolet 25, 26, 27 and 28 to dry each ink individually.
  • Document US-A-5,502,310 describes an apparatus UV radiation and a crosslinking process photosensitive ink, comprising an inking step a plastic support, followed by a step consisting of irradiate the entire surface of the support with a source UV lighting consisting of a lamp tube arranged in a reflective housing in two parts.
  • Another drawback is aging premature supports and their yellowing under the effect of crosslinking ultraviolet radiation.
  • An object of the invention is to carry out a method cross-linking ink allowing printing at high rate, without the aforementioned drawbacks.
  • a particular object of the invention is to avoid the yellowing of the support to allow lasting quality print.
  • the crosslinking is operated by a concentrated ultraviolet laser beam on the ink drops deposited on the surface of the support, the white surfaces of the support not being scanned by the laser beam.
  • the invention is particularly applicable to printing and crosslinking ink on a plastic support.
  • the crosslinking ink according to the invention is particularly applicable to inkjet point-to-point printing and / or a polychromatic printing process.
  • the invention is advantageously intended to be implementation following conventional steps printing.
  • FIG. 3 Various known printing methods provide, as illustrated in figure 3, an inking of the surface of a support 38, the inking possibly being in particular made by mechanical contact in press or by projection 37 of ink drops 36, especially during point-to-point inkjet printing.
  • the invention thus comprises a preliminary step of inking the support, inking being made with a photosensitive ink of the type ink crosslinkable by ultraviolet radiation.
  • the inking is carried out according to the invention in depositing drops of polymerizable ink by point-to-point ultraviolet radiation on a support printing.
  • the support 38 After printing or, more precisely, this inking step, the support 38 includes inked surfaces and non-inked surfaces, the inked surfaces consisting of inked points 31 arranged contiguously or in isolation.
  • the method according to the invention provides for applying a ultraviolet beam concentrated on the inked points, at the exclusion of non-inked surfaces from the support.
  • FIG. 3 thus shows an optical device 33 34 schematically endowed with a ray source ultraviolet 33 and a beam concentrator 34, to focus the ultraviolet rays on a point 31 ink.
  • An advantage of the invention is that the light power of the ray source 33 is concentrated on the only point 31 of which crosslinking is then very rapid. Therefore, we can plan a very fast scanning of the points inked, applying the concentrated beam on each point for a period of time corresponding to the energy that the drop of ink must receive to be totally reticulated.
  • An advantage of such a provision is that the aging and yellowing of the support is avoided, especially on non-inked surfaces.
  • Another advantage is that the light energy applied is less compared to the processes exposure to ultraviolet lamps, none radiation power not being dispensed unnecessarily on non-inked surfaces.
  • Such an arrangement is easily achieved by providing that beam 32 is focused on a surface substantially equal to the surface of a drop ink.
  • Support scanning means and beam distribution will be detailed below in two preferred device embodiments implementing the method according to the invention.
  • the invention is achieved by implementing a ultraviolet laser, although one can consider a intense source of ultraviolet like arc lamp or rotating cathode lamp.
  • FIG. 4 thus illustrates a laser 43 emitting a coherent beam 42 of ultraviolet radiation.
  • the beam 42 is deflected to focus on one point 41 'inked to crosslink.
  • An advantage of the laser is that the beam 42 'of rays emitted can easily have dimensions very reduced while remaining substantially parallel.
  • the beam 42 can thus be concentrated on a surface as microscopic as the dot surface full color offset printing such as dots 51a, 51b, 51c and 52a to 55c shown in enlarged view in figure 4.
  • an ultraviolet laser can have a very intense light output, which allows very fast exposure of each point to be crosslinked.
  • crosslinking time of a support comprising few inked points are thus advantageously reduced compared to known methods.
  • a laser emission device 43 emitting a beam continuously or by pulse.
  • the exposure time of a drop under the beam continuous or the number of laser pulses applied to gout is determined so that gout receives the light energy of crosslinking.
  • the application of the beam ultraviolet is performed by point-to-point scanning of support.
  • FIG. 4 thus illustrates a device for scanning 46 comprising a motor orienting a mirror 46 to deflect the laser beam 43 towards each point of support.
  • the beam deflection device 45, 46 42 provides a transverse scanning of the support 43 by the beam 42 ', 42 ", 42"' so as to crosslink all the points 41 ', 41 ", 41”' of a transverse line of the support 48.
  • the support is then moved in a longitudinal direction to crosslink a next line of dots.
  • the scanning device 45, 46 is coupled to a point printing computer system by point, indicating to the scanner the exact location of each inked point in the text or of the image in print.
  • the scanning device can in particular receive an order similar to the print head positioning control point by point.
  • the scanning provided by the first mode of realization can be carried out continuously or discreet, in two variants.
  • the deflection angle of the ultraviolet beam 42 varies continuously, the beam 42 'being gradually deflected all along the transverse line of the support.
  • a component 44 for cutting the beam 42 thus prevents concentration the beam 42 'on non-inked points.
  • This cut-off component is advantageously coupled to the point-to-point printing computer system which closes when the beam is deflected 42 'would go towards non-inked surfaces 40.
  • component 44 cutoff must have a very short reaction time.
  • Component 44 is for example a "Q-switch" device as used in optronics.
  • beam interruption 42 are within the range of skilled in the art without departing from the scope of this invention.
  • the means of interruption of the beam can be an integral part of the laser 43.
  • the laser delivers pulses on command of ultraviolet radiation when the device scan 45, 46 targets an inked point 41 'and does not deliver no pulse when the scanner 45.46 targets a non-inked point 40.
  • the sweep 45, 46 is programmed to deflect the beam 42 'to an inked point 41' and pass directly at another angle of deflection, the beam 42 '' going to another inked point 41 ''.
  • the device 46 scan command is then discontinuous and the position of the mirror 45 passes without transition from one angular value to another value discreet angular.
  • a second embodiment of the method according to the invention provides another mode of application of the ultraviolet beam on the points of the support, instead of the scanning step.
  • the second embodiment includes as illustrated in FIG. 5, a linear strip 70 of fibers 71 to 77 parallel optics, the output of which is arranged opposite the surface of the support to crosslink. Equivalently, a network of two dimensions of optical fibers with parallel outputs can To be scheduled.
  • the laser beam 82 is injected in entry of optical fibers 71 to 77. Fibers 71 to 77 advantageously have their entries gathered so that the incoming laser radiation is distributed substantially equally between all fibers.
  • the initial laser beam 82 is divided into a multitude of parallel rays, each ray being directed and concentrated towards an inked point of the support 68.
  • the optical fibers used are made of quartz or glass transmitting ultraviolet radiation, a ordinary glass optical fiber not transmitting wavelengths beyond purple.
  • the beam distribution device 70 82 further includes beam interrupting means ultraviolet, each optical fiber 71 being provided by example of a spoke cutout component to avoid to expose an un-inked point 60 of the support 68.
  • This second embodiment is suitable particularly to printing processes involving dot screening.
  • the spacing step fiber outlets of the linear bar 70 in pitch screen printing we get a series of laser beams focused on precise coordinates dots in the print pattern.
  • the second mode of realization applies advantageously to processes inkjet printing that allow line by line printing, a line of dots being inked instantly.
  • a device using an online inkjet generally includes a 100 linear bar of ink drop generators. A series of drops 101, 102, 103 is emitted simultaneously in direction of the points of the support that we want to ink.
  • each colored point 51 is formed for example of three or four points elementary 51a, 51b, 51c inked with colors fundamental or black.
  • Inked dots of different colors can be crosslinked according to the invention by applying a radius laser on each colored point.
  • the elementary points generally microscopic, are very close and can possibly overlap.
  • the polychromy effect is obtained when offset printing, by modulating the dimensions of each microscopic elementary point for reconstruct all possible colors. According to one variant, by modulating the overlap and the dimension from each point, we also get an effect of polychromy.
  • the possibility of modulating in power the ultraviolet beam allows to adapt the crosslinking step to the inks used and to the media printing speed.
  • the crosslinking process can be applied only once after all the inking steps of colors as illustrated in figure 5.
  • the device 70 beam splitter then has a tight network of optical fibers, the fibers being distributed spatially according to the maximum grid of inked points that we can train in printing.
  • a crosslinking according to the invention after each inking of a color when printing in full color.
  • the printing installation can then include several crosslinking devices arranged in output of each monochromatic inking device.
  • the method according to the invention allows advantageously to provide a total gelation or partial inks during crosslinking between each inking step, the partial gelling being obtained for example by modulating the power of the ultraviolet laser beam.
  • the essential advantage of the crosslinking process according to the invention is, as indicated before, eliminate the disadvantage inherent in radiation ultraviolet, namely the bleaching action or yellowing on the polymers constituting the support.
  • the process according to the invention extends to crosslinking photosensitive ink on any type of print media such as paper, cardboard, wood to replace advantageously printing with water-based or solvent-based ink avoiding any browning of the support.
  • crosslinking process according to the invention advantageously contributes to increasing the rates of the printing device where it is integrated.
  • the invention thus allows advantageously obtain a crosslinking speed higher than inkjet inking speeds, if although the print rate is no longer limited by the cross-linking stage.
  • the disclosure of the invention is based on the ultraviolet radiation, the invention is not limited to a specific spectrum of light, but can be applied with any suitable type of light radiation for polymerization and drying of inks photosensitive.
  • crosslinking process can be used with photosensitive paints, the same constituents and the same pigments being used in polymeric inking and polymeric painting.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Ink Jet (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Printing Methods (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
EP01117496A 1997-06-23 1998-06-18 Vorrichtung zum Härten von Tinten mittels UV-Licht Expired - Lifetime EP1162079B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9708176 1997-06-23
FR9708176A FR2764844B1 (fr) 1997-06-23 1997-06-23 Reticulation d'encre u.v.
EP98932230A EP0993378B1 (de) 1997-06-23 1998-06-18 Verfahren zum härten von farben mittels uv-licht

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP98932230A Division EP0993378B1 (de) 1997-06-23 1998-06-18 Verfahren zum härten von farben mittels uv-licht

Publications (3)

Publication Number Publication Date
EP1162079A2 true EP1162079A2 (de) 2001-12-12
EP1162079A3 EP1162079A3 (de) 2002-11-13
EP1162079B1 EP1162079B1 (de) 2006-03-29

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ID=9508605

Family Applications (2)

Application Number Title Priority Date Filing Date
EP98932230A Expired - Lifetime EP0993378B1 (de) 1997-06-23 1998-06-18 Verfahren zum härten von farben mittels uv-licht
EP01117496A Expired - Lifetime EP1162079B1 (de) 1997-06-23 1998-06-18 Vorrichtung zum Härten von Tinten mittels UV-Licht

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP98932230A Expired - Lifetime EP0993378B1 (de) 1997-06-23 1998-06-18 Verfahren zum härten von farben mittels uv-licht

Country Status (10)

Country Link
US (1) US6562413B1 (de)
EP (2) EP0993378B1 (de)
JP (1) JP4125796B2 (de)
CN (1) CN1178799C (de)
AT (2) ATE206090T1 (de)
CA (1) CA2293551C (de)
DE (2) DE69833974T2 (de)
ES (2) ES2165688T3 (de)
FR (1) FR2764844B1 (de)
WO (1) WO1998058806A1 (de)

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EP0876257A4 (de) * 1996-01-26 1999-04-28 Tetra Laval Holdings & Finance Vorrichtung und verfahren zum bedrucken von bildern auf verpackungsmaterial
FR2749673B1 (fr) 1996-06-11 1998-07-31 Gemplus Card Int Procede d'impression d'une couche d'un corps de support portable, notamment carte a memoire, et corps de support imprime selon un tel procede
US6092890A (en) * 1997-09-19 2000-07-25 Eastman Kodak Company Producing durable ink images
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US6322208B1 (en) * 1998-08-12 2001-11-27 Eastman Kodak Company Treatment for improving properties of ink images
US6350496B1 (en) * 2000-10-13 2002-02-26 Ronan Engineering Company Method for producing permanent drawings and markings on plastic tiles or tiles made of polycarbonate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1163552B1 (de) * 1999-05-27 2003-08-27 Patterning Technologies Limited Verfahren zur erzeugung einer maske auf einer oberfläche
RU2305039C2 (ru) * 2001-12-19 2007-08-27 3М Инновейтив Пропертиз Компани Устройство для струйной печати с использованием фиксируемых излучением чернил
FR3061676A1 (fr) * 2017-01-12 2018-07-13 Reydel Automotive B.V. Installation d'impression et de sechage et procede d'impression et de sechage
WO2018130458A1 (fr) * 2017-01-12 2018-07-19 Reydel Automotive B.V. Installation d'impression et de sechage et procede d'impression et de sechage
US10919319B2 (en) 2017-01-12 2021-02-16 Smrc Automotive Holdings Netherlands B.V. Printing and drying installation and printing and drying method

Also Published As

Publication number Publication date
DE69833974T2 (de) 2007-01-11
JP2002504873A (ja) 2002-02-12
JP4125796B2 (ja) 2008-07-30
CN1260753A (zh) 2000-07-19
CA2293551A1 (fr) 1998-12-30
US6562413B1 (en) 2003-05-13
CA2293551C (fr) 2005-11-08
DE69801823D1 (de) 2001-10-31
ATE206090T1 (de) 2001-10-15
CN1178799C (zh) 2004-12-08
ES2165688T3 (es) 2002-03-16
WO1998058806A1 (fr) 1998-12-30
ES2262582T3 (es) 2006-12-01
FR2764844B1 (fr) 1999-08-06
ATE321671T1 (de) 2006-04-15
FR2764844A1 (fr) 1998-12-24
EP1162079B1 (de) 2006-03-29
EP1162079A3 (de) 2002-11-13
EP0993378A1 (de) 2000-04-19
DE69833974D1 (de) 2006-05-18
DE69801823T2 (de) 2002-06-13
EP0993378B1 (de) 2001-09-26

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