EP2024187B1 - Procédé d'impression - Google Patents

Procédé d'impression Download PDF

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Publication number
EP2024187B1
EP2024187B1 EP07761811A EP07761811A EP2024187B1 EP 2024187 B1 EP2024187 B1 EP 2024187B1 EP 07761811 A EP07761811 A EP 07761811A EP 07761811 A EP07761811 A EP 07761811A EP 2024187 B1 EP2024187 B1 EP 2024187B1
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EP
European Patent Office
Prior art keywords
primer
ink
curable
radiation
optical disc
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.)
Active
Application number
EP07761811A
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German (de)
English (en)
Other versions
EP2024187A2 (fr
Inventor
Nigel Anthony Caiger
Alexander Grant
Robin Mcmillan
Stewart Kessel
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.)
Sun Chemical Corp
Original Assignee
Sun Chemical Corp
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Filing date
Publication date
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Publication of EP2024187A2 publication Critical patent/EP2024187A2/fr
Application granted granted Critical
Publication of EP2024187B1 publication Critical patent/EP2024187B1/fr
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Classifications

    • 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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4071—Printing on disk-shaped media, e.g. CDs
    • 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
    • B41M5/0011—Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
    • 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
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5209—Coatings prepared by radiation-curing, e.g. using photopolymerisable compositions
    • 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
    • B41M1/12—Stencil printing; Silk-screen printing
    • 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

Definitions

  • the present invention relates to a printing process, in particular, to a process for printing on optical discs, to a primer composition for use in the process and to printed discs made using the process.
  • optical discs refers to optical information storage discs such as those designed to hold data which can be retrieved by means of a laser or other optical device and encompasses compact discs (CDs), digital versatile discs (DVDs) and the like.
  • radiation-curable as used herein means that curing is induced by one or more types of radiation, such as ultraviolet light (UV) or electron beam (EB) radiation.
  • Radiation-curing ink jet printing has become a commercially accepted technology for producing graphic display and other products on a wide range of substrates, such as paper, cardboard, plastics and glass.
  • the advantages of ink jet printing include being able to print direct from a computer, being able to economically print small print runs, being able to easily customise individual images, minimal down time between jobs and the robust performance of the printed product.
  • Printing optical discs has previously been carried out using offset, flexo, screen and pad printing. All those techniques have the disadvantage that they have high set up costs making them unsuitable for printing anything other than large print runs.
  • Optical discs are generally made of polycarbonate or acrylic materials and can be spin coated with an acrylicbased coating. These are poorly wetted by commercially available inks leading to poor print quality and/or poor adhesion of the cured ink to the disc.
  • pre-coated discs which have been treated with coatings that provide a surface suited for ink jet printing.
  • pre-coated CDs have only enjoyed limited success, for reasons of cost and because the coatings are insufficiently robust.
  • optical discs that have been spray coated with a silica based coating are available for ink jet printing using water based ink jet inks.
  • Those discs have not been practical for printing large runs, have been expensive to produce and the quality of the printed image has been inferior to those printed on optical discs by offset or screen printing.
  • the resulting printed discs have not generally been found to be very hard wearing, the printed coating tending to scratch easily.
  • Those discs also have been found to have poor water and humidity resistance.
  • the use of pre-coated optical discs for subsequent ink jet print has generally been limited to small scale print runs in niche markets.
  • US 6,846,541 describes a process in which an optical disc is screen printed with a white layer which is then UV-cured followed by screen printing of an ink receiving layer which is then UV-cured followed by printing of an aqueous ink jet ink to form an image which is then overcoated with a solvent based overcoating layer.
  • EP 1 154 418A2 discloses a process which involves screen printing a UV curable ink-receiving layer onto an optical disc and curing that layer and then ink jet printing an aqueous ink onto the cured layer.
  • US 5,920,329 discloses a process in which an optical disc is coated with a hydrophilic film and an aqueous printing ink is ink jet printed onto that hydrophilic ink-receiving layer.
  • EP 0 652 555A2 discloses a process in which an optical disc is coated with a UV-curable protective layer containing an absorbent filler.
  • the protective layer is cured and a water-based or oil-based ink is applied to the cured layer using writing implements or an ink jet printer.
  • the present invention provides a process of ink jet printing onto an optical disc substrate which comprises the steps of i) screen printing a radiation-curable primer onto the optical disc substrate to form a layer of wet primer, ii) ink jet printing a radiation-curable ink onto the wet primer layer, and iii) curing the primer and the ink simultaneously.
  • a CD for example, may be printed by a process in which the CD blank is taken from a stack, a layer of primer is applied to the blank by screen printing, the primed blank is passed under the ink jet print head and an image is printed onto the wet primer layer.
  • the printer is not limited to the printing of special inks suitable for printing directly onto the surface of optical disc substrates.
  • the ink jet ink is applied using a single pass of a print head thus providing rapid printing.
  • Radiation curable compositions typically shrink upon curing, as the various components cross-link to form a 3D-network of higher density than the original composition. That shrinkage presents a particular problem in the printing of optical discs because it can cause the disc to warp, thereby rendering it unusable or unreliable.
  • the shrinkage of the primer composition may be reduced by including in the primer components which are already at least partially polymerised, such as polymers or oligomers.
  • including relatively high molecular weight components such as polymers or oligomers in the primer leads to a corresponding increase in viscosity, which in turn influences the method by which the primers can be applied to the discs.
  • the present inventors have found that radiation curable primer compositions having a viscosity well suited to screen printing can give a desirably low degree of shrinkage which makes possible their use on optical discs.
  • the primer layer may extend over part or all of one face of the disc.
  • the primer is cured after the printing of the radiation-curable ink onto the primer layer, that is, the primer is screen printed onto the optical disc and, before the primer is cured, a radiation curable ink is printed onto the primer layer by ink jet printing. Both the primer and the ink jet ink are then cured simultaneously, that is, in the same step by the same radiation source.
  • the ink is a UV-curing jet ink
  • the primer is advantageously also UV-curable and can be cured by exposure to the same dose of radiation which is used to cure the ink.
  • the printing step occurs no longer than 1 hour after the priming step, preferably no longer than 10 minutes.
  • the primer and the radiation-curable ink are preferably applied to the optical disc substrate in-line, that is, the primer is applied as part of the printing process. In an in-line process, the printing will usually be carried out no longer than 1 minute after the priming.
  • the embodiment of the invention in which the primed substrate is not cured before printing is particularly suited to in-line processing because the printing can take place almost immediately after the primer has been applied. This contrasts with known primer systems in which the primer must be dried after application and before printing, which entails extra process complexity, a need for storage space and delay.
  • the primer is applied to the optical disc substrate immediately before the substrate is carried into the print head of the printer.
  • the primer composition and the ink will desirably be such that the ink droplets spread on the surface of the primer layer and coalesce to form a film.
  • a limited degree of mixing of the ink and the primer takes place. Such mixing is not in any way essential but where it takes place it may serve to enhance the adhesion of the cured ink film to the primer layer.
  • the disc is cleaned of dust, for example by a jet of air, prior to application of the primer.
  • the viscosity of the primer prior to application to the optical discs is suitable for screen printing.
  • the viscosity of the primer is not less than 500 cP (centipoise), preferably not less than 800 cP, more preferably not less than 1000 cP and especially not less than 1200 cP at 25 °C.
  • Primers having relatively high viscosities of 500 cP or higher and especially 1000 cP or higher have been found not to shrink significantly on curing, the level of shrinkage on curing being linked to the viscosity of the composition, higher viscosity primers generally displaying less shrinkage.
  • the viscosity of the primer is not greater than 10000 cP, preferably not greater than 6000 cP, more preferably not greater than 5500 cP and especially not greater than 4500 cP at 25°C.
  • the viscosity of the primer may be in the range of from 500 cP to 6000 cP at 25 °C, such as from 1000 cP to 5500 cP at 25°C and preferably from 1200 cP to 4500 cP at 25 °C. Viscosities within the preferred ranges have typically been found to be suitable for screen printing.
  • Primers of relatively low viscosities suitable for screen printing for example of approximately 1200 cP, have been found to be suitable for "fast” printing applications where the lay down of the primer in a short timescale is required.
  • Relatively high viscosities for example of approximately 4500 cP, have been found to be more applicable for "slower” printing applications in which the speed of application of the primer layer is of lesser importance.
  • the viscosity of the primer may be measured using a REL (Research Equipment (London) Ltd) cone and plate viscometer.
  • the primer may be a clear varnish or lacquer.
  • the primer may contain a pigment.
  • the primer will be colourless.
  • the primer comprises a white pigment, such as TiO 2 , and an opaque white primer coating is provided.
  • the pigment preferably provides a very dense white.
  • the pigment is present at a level of no less than 10% by weight and more preferably no less than 20% by weight of the total weight of the primer.
  • the pigment is present at a level of no greater than 60% by weight and more preferably no greater than 50% by weight of the total weight of the primer.
  • TiO 2 has been found to be a particularly suitable pigment.
  • the primer may comprise an agent to provide a matt finish to the coating surface, such as silica.
  • the primer may comprise an antisettling aid to assist in providing an even distribution of pigment throughout the primer coating.
  • the primer may comprise a flow agent, which may be beneficial in levelling the primer coating across the optical disc to achieve an even coating.
  • the levelling flow agents are present at a level of at least 0.1% by weight and more preferably at least 0.5% by weight, for example from abut 1% to 2.5% by weight based on the total weight of the primer.
  • One or more flow agent may also be present to improve the flow characteristics (rheology) of the primer so that it is suitable for screen printing.
  • rheology improving flow agents comprise at least 0.1% by weight and more preferably at least 0.3% by weight, for example from about 0.5% to 1% by weight based on the total weight of the primer.
  • the primer may comprise a stabiliser component and/or a filler component.
  • the primer composition may include a photoinitiator that initiates free-radical or cationic chain reactions on exposure to radiation, such as UV radiation.
  • the primer is UV-curable and the process of the invention involves curing the primer by exposure to UV-light.
  • UV-curable primers will, in general, comprise at least one photoinitiator, which may be a cationic photoinitiator or a free radical photoinitiator, as explained further below.
  • the primer is EB-curable and the process of the invention involves curing the primer by exposure to an electron beam. EB-curable primers do not require a photoinitiator, although one or more may be present.
  • the photoinitiator(s) preferably is present at a level of no less than 1% by weight and more preferably no less than 2% by weight based on the total weight of the primer.
  • any photoinitiator(s) is present at a level of no more than 20% by weight and more preferably no more than 10% by weight based on the total weight of the primer.
  • the primer comprises a pigment the primer is advantageously selected so that a deep cure level is achieved, that is, any photoinitiator(s) present are efficient at curing throughout the depth of the pigment-containing coating.
  • Typical photoinitiators that may be used in a primer coating according to the invention include phosphine oxide photoinitiators that are particularly effective in curing white pigment-containing primers.
  • the primer is preferably 100% solids i.e. containing essentially no volatile component such as water or organic solvents.
  • the primer will contain at least one component that can be cured by a radiation-induced reaction.
  • the radiation-curable components may be oligomeric or polymeric materials of relatively high number average molecular weight (MW) and/or are monomers having a relatively low number average MW of less than 500.
  • the primer advantageously comprises at least one oligomer.
  • that oligomer has a number average MW of greater than 500 and preferably greater than 1000.
  • the primer advantageously comprises no less than 10% and preferably no less than 20% by weight of one or more oligomers based on the total weight of the primer.
  • the primer comprises not more than 50% and preferably not more than 40% by weight of oligomer based on the total weight of the primer.
  • the oligomer may be present at from 1% to 60% and preferably from 20% to 40% by weight based on the total weight of the primer.
  • the oligomers have a number average molecular weight of more than 500 and are present at a level of from 20% to 40% by weight based on the total weight of the primer.
  • Preferred oligomers exhibit a low level of shrinkage on curing. Examples of oligomers that have been found to be particularly suitable for inclusion in the primers of the invention include polyester, epoxy, modified epoxy and urethane oligomers with urethane oligomers being especially preferred.
  • the primers may include acrylate oligomers which have been found to give rapid cure times.
  • oligomers in the primer composition has been found to reduce the level of shrinkage of the primer on curing. Oligomers tend to form fewer cross-links on curing than low molecular weight monomers, and therefore help to reduce the degree of shrinkage of the primer on curing.
  • the application of primers which display a low level of shrinkage on curing is particularly important on optical discs in order to minimise warping of the discs.
  • a wide range of monomers may be used in the primer compositions of the invention with those that exhibit a low level of shrinkage on curing and high adhesion to the optical disc substrates being preferred.
  • the monomers may be monofunctional or multifunctional (that is, having more than one polymerisable group).
  • the primer includes both monofunctional and multifunctional monomers.
  • the monomers may be present in an amount of from 10% to 60% by weight, preferably from 10% to 40% by weight and more preferably from 15% to 30% by weight, based on the total weight of the primer.
  • Suitable free-radically curable components for both the primer and the ink layers include ethylenically unsaturated monomers and oligomers such as acrylate and methacrylate components and vinyl components.
  • Acrylate monomers include multifunctional acrylate monomers such as hexanediol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, polyethyleneglycol diacrylates (for example, tetraethyleneglycol diacrylate), dipropyleneglycol diacrylate, tri(propylene glycol) triacrylate, neopentylglycol diacrylate, bis(pentaerythritol) hexa-acrylate, and the acrylate esters of ethoxylated or propoxylated glycols and polyols, for example, propoxylated neopentyl glycol diacrylate, ethoxylated trimethylolpropane triacrylate.
  • multifunctional acrylate monomers such as hexanediol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, polyethyleneglycol diacrylates
  • 1,6-hexanediol diacrylate has been found to be a particularly suitable monomer for inclusion in the primer compositions of the invention due to its good adhesion to optical disc substrates.
  • Monofunctional acrylate monomers may be present such as the esters of acrylic acid, for example octyl acrylate, decyl acrylate, isobornyl acrylate, phenoxyethyl acrylate, tetrahydrofuryl acrylate, 2-(2-ethoxyethoxy) ethylacrylate.
  • Methacrylate monomers include hexanediol dimethacrylate, trimethylolpropane trimacrylate, triethyleneglycol dimethacrylate, diethyleneglycol dimethacylate, ethyleneglycol dimethacrylate, 1,4-butanediol dimethacrylate.
  • Suitable vinyl components include N-vinyl pyrolidones, N-vinyl caprolactams, vinyl ethers and styrenes.
  • VCAP 1-Vinyl caprolactam
  • VCAP has been found to be a particularly suitable vinyl monomer for inclusion in the primer compositions of the invention due to its good adhesion to optical disc substrates.
  • Vinyl ether compounds include ⁇ , ⁇ -unsaturated ether monomers, such as triethylene glycol divinyl ether, diethylene glycol divinyl ether, 1,4-cyclohexanedimethanol divinyl ether and ethylene glycol monovinyl ether, as well as ethyl-1 propenyl ether, triethyleneglycol methyl propenyl ether, triethyleneglycol methyl vinyl ether and 2-cyclopenten-1-yl ether.
  • ⁇ , ⁇ -unsaturated ether monomers such as triethylene glycol divinyl ether, diethylene glycol divinyl ether, 1,4-cyclohexanedimethanol divinyl ether and ethylene glycol monovinyl ether, as well as ethyl-1 propenyl ether, triethyleneglycol methyl propenyl ether, triethyleneglycol methyl vinyl ether and 2-cyclopenten-1-yl ether.
  • Suitable cationically curable components include oxygen-containing ring opening monomers and oligomers such as those comprising an oxetane ring or an oxirane ring.
  • Oxirane species include cycloaliphatic oxiranes (also known as epoxides), such as 3,4-epoxy cyclohexyl methyl-3,4-epoxy cyclohexyl carboxylate and the glycidyl ethers of polyols.
  • Oxiranes derived by the epoxidation of unsaturated materials may also be suitable, for example, epoxidised soybean oil, epoxidised polybutadiene or epoxidised alkenes.
  • Oxetane species include mono-functional and multi-functional oxetanes, for example, 3-ethyl-3-hydroxymethyl-oxetane, bis[(1-ethyl-3-oxetanyl)methyl] ether, 3-ethyl-3-[2-ethylhexyloxy)methyl]oxetane, [1,4-bis(3-ethyl-3-oxetanylmethoxy)methyl]benzene and trimethylolpropane oxetane. Many further suitable materials are known to the skilled person.
  • the primer may be free-radically curable, cationically curable or it may be curable by a combination of the two mechanisms. Free-radical curing is preferred.
  • the primer composition comprises components curable by a free-radical mechanism whilst being substantially free of components that are curable only by cationic mechanism. Some cationic systems generate acidic by-products on curing. Preferably, the primer does not generate any such acidic by-product on curing in order to avoid degradation of the disc surface.
  • the primer should be such that the primer wets the optical disc substrate sufficiently well to form a film on the substrate when applied by screen printing.
  • the primer adheres well to the disc material or spin coat, enabling the primer coating to adhere well to the disc.
  • the primer swells the disc material, thereby promoting good adhesion.
  • the invention further provides an apparatus suitable for printing an optical disc according to the process of the invention.
  • the apparatus for printing optical discs includes a screen printing module for screen printing a primer coating onto the optical disc, an ink jet printing module for ink jet printing an image onto the primer coating and a source of radiation for curing the primer and the ink.
  • the screen-printed primer and the ink jet printing are applied in-line.
  • the invention also provides an optical disc produced by the process of the invention.
  • a printed optical disc comprising an optical disc substrate having on at least one surface a layer of cured primer being the cured product of a radiation-curable primer and, on the layer of cured primer, an image formed of cured jet ink.
  • the layer of cured primer composition is desirably in the range of from 7 ⁇ m to 15 ⁇ m thick.
  • the invention also provides a screen-printable radiation-curable primer composition for use in the process of the invention comprising at least one radiation-curable component, the primer composition having a viscosity of from 1000 cP to 5500 cP, especially 1200 cP to 4500 cP, at 25 °C.
  • the primer composition may comprise one or more photoinitiators.
  • the primer composition may also comprise one or more passive or inert resins such as acrylic resins.
  • the primer may include one or more pigments.
  • the pigment is present at no less than 20% by weight, for example from 20% to 50% by weight, based on the total weight of the primer.
  • the primer comprises at least 10% by weight, for example from 20% to 40% by weight, of oligomer based on the total weight of the primer composition.
  • Iracure 907 is a UV-curable ⁇ -aminoketone photoinitiator available from Ciba Specialty Chemicals. This primer composition was screen printed onto a CD disc and subsequently ink jet printed with a uv-curable jet ink. The primer and ink were cured together with a medium pressure curing lamp.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Printing Methods (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
  • Manufacturing Of Printed Wiring (AREA)

Claims (13)

  1. Procédé d'impression par jet d'encre sur un substrat de disque optique qui comprend les étapes consistant à i) sérigraphier un primaire séchant sous l'effet d'un rayonnement sur le substrat de disque optique pour former une couche de primaire humide, ii) imprimer par jet d'encre une encre séchant sous l'effet d'un rayonnement sur la couche de primaire humide, et iii) sécher le primaire et l'encre simultanément.
  2. Processus tel que revendiqué dans la revendication 1, dans lequel l'encre est une encre séchant sous rayonnement UV.
  3. Processus tel que revendiqué dans la revendication 1 ou la revendication 2, dans lequel le primaire et l'encre sont imprimés sur le substrat en ligne.
  4. Processus tel que revendiqué dans l'une quelconque des revendications précédentes, dans lequel le primaire sèche sous l'effet d'un rayonnement UV.
  5. Processus tel que revendiqué dans l'une quelconque des revendications précédentes, dans lequel le primaire sèche par l'intermédiaire d'un mécanisme radicalaire.
  6. Processus tel que revendiqué dans l'une quelconque des revendications précédentes, dans lequel la viscosité du primaire est comprise entre 500 et 6000 cP à 25 °C.
  7. Processus tel que revendiqué dans l'une quelconque des revendications précédentes, dans lequel le primaire comprend au moins un pigment.
  8. Processus tel que revendiqué dans la revendication 7, dans lequel le primaire comprend pas moins de 20 %, en masse, de pigment sur la base de la masse totale du primaire.
  9. Processus tel que revendiqué dans l'une quelconque des revendications précédentes, dans lequel le primaire comprend au moins un oligomère ayant une masse moléculaire moyenne supérieure à 500.
  10. Processus tel que revendiqué dans l'une quelconque des revendications précédentes, dans lequel le primaire comprend de 20 % à 40 % d'oligomère, en masse, sur la base de la masse totale du primaire.
  11. Appareil d'impression de disques optiques comprenant un module d'impression par sérigraphie pour sérigraphier une couche de primaire séchant sous l'effet d'un rayonnement située sur le disque optique pour former une couche de primaire humide, et un module d'impression par jet d'encre pour imprimer par jet d'encre une encre séchant sous l'effet d'un rayonnement pour former une image sur la couche de primaire, et une source de rayonnement, l'appareil étant configuré de manière à ce que le module d'impression par jet d'encre imprime l'encre séchant sous l'effet d'un rayonnement sur la couche de primaire humide et de manière à ce que la source de rayonnement sèche le primaire et l'encre simultanément.
  12. Appareil tel que revendiqué dans la revendication 11, dans lequel le module d'impression par sérigraphie et le module d'impression par jet d'encre sont des modules en ligne.
  13. Disque optique produit par le processus selon l'une quelconque des revendications 1 à 10 qui est un disque optique imprimé comprenant un substrat de disque optique ayant sur au moins une surface une couche de primaire séché étant le produit séché d'un primaire séchant sous l'effet d'un rayonnement et, sur la couche du primaire séché, une image formée par l'encre séchée de l'impression par jet d'encre.
EP07761811A 2006-05-05 2007-05-03 Procédé d'impression Active EP2024187B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0609011.2A GB0609011D0 (en) 2006-05-05 2006-05-05 A printing process
PCT/US2007/068125 WO2007131099A2 (fr) 2006-05-05 2007-05-03 ProcÉdÉ d'impression

Publications (2)

Publication Number Publication Date
EP2024187A2 EP2024187A2 (fr) 2009-02-18
EP2024187B1 true EP2024187B1 (fr) 2012-01-11

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EP (1) EP2024187B1 (fr)
AT (1) ATE540821T1 (fr)
GB (1) GB0609011D0 (fr)
WO (1) WO2007131099A2 (fr)

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US8133539B2 (en) * 2008-03-06 2012-03-13 Electronics For Imaging, Inc. Method and composition for ink jet printing on a nonabsorbent substrate

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KR100209819B1 (ko) 1993-10-18 1999-07-15 사또 아끼오 광기록매체, 광기록매체의 표면에 프린팅하는 방법및 자외선경화형잉크
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JP2004118888A (ja) 2002-09-24 2004-04-15 Matsushita Electric Ind Co Ltd 光ディスクおよびそのラベル作製方法

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GB0609011D0 (en) 2006-06-14

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