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
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
• • 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
  • B41M1/00—Inking and printing with a printer's forme
  • B41M1/26—Printing on other surfaces than ordinary paper
• • 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
  • B41M5/0011—Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
  • B41M5/0017—Application of ink-fixing material, e.g. mordant, precipitating agent, on the substrate prior to printing, e.g. by ink-jet printing, coating or spraying
• • 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
  • 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
  • B41M5/5227—Macromolecular coatings characterised by organic non-macromolecular additives, e.g. UV-absorbers, plasticisers, surfactants
• • 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
  • B41M5/5245—Macromolecular coatings characterised by the use of polymers containing cationic or anionic groups, e.g. mordants
• • 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
• • 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

Definitions

• the invention further relates to a liquid ink receiving layer according to claim 1.
• the invention further relates to liquid ink receptive layers or films (receptive layers) for direct ink jet or ink printing, and to corresponding compositions, uses and methods.
• the invention relates to liquid (flowable) ink receptive layers or films (recording layers) for direct ink jet or ink printing in which low viscosity liquid (thin) printing media (inks) can be incorporated according to this printing process and which induces spontaneously or chemically or photochemically at a time subsequent to the pressure (delayed), optionally also thermally accelerated, solidify or solidify.
• Associated with this may be a chemically or physically induced spatial fixation of the colorants (dyes or pigments) introduced together with the low-viscosity printing inks into the recording layer, which is likewise initially flowable.
• Ink-jet or ink-printing refers to contactless forms of digital printing without intermediate carrier and without printing form, in which printing media (printing inks) are broken down into individual volume units (drops) and applied in a time-dependent and location-dependent manner.
• Ink jet printing refers to continuous ink jet (CIJ) and ink drop on demand (DoD), which are thermally activated (thermal ink jet, TIJ) or piezoelectrically activated (engl. : Piezo Ink Jet, PIJ).
• inkjet or ink color printing different colored inks are printed side by side within a raster, depending on the color order system.
• the achievable resolution of the print is determined on the one hand by this grid (defined color distribution), but on the other hand by the color gradient (propagation, accumulation or mixing) of the applied printing inks (undefined color distribution).
• Color spread or buildup can significantly affect the resolution achievable in inkjet or ink color printing.
• Inkjet or inkjet inks contain film-forming components to form solid films or layers.
• the formation of solid films or layers is required if the substrate is not sufficiently penetrable (porous or swellable) to accommodate deposited, non-film-forming components.
• the printing material may also be referred to as a little or non-absorbent substrate.
• the present invention is therefore based on the object to alleviate at least one of the disadvantages and limitations listed above.
• the object of the present invention is also to remove restrictions on the usability of raw materials for ink jet or ink printing, in particular of film formers but also of pigments and other ingredients.
• compositions for the formation of liquid ink receptive layers according to the invention and the use of such compositions for the formation of ink receptive layers according to the invention are proposed.
• methods for ink-jet or ink printing are proposed.
• the invention makes it possible to use raw materials in conjunction with ink-jet or ink printing, which, incidentally, can not be used or can only be used to a very limited extent.
• Inventive ink receptive layers can be provided in particular advantageously on little or no absorbent substrates, insofar the invention is particularly suitable for use in printing little or no absorbent substrates.
• ink receptive layer or recording layer in the sense of the present invention always includes the terms ink receptive film or recording film.
• a recording film in the context of the present invention is regarded as a comparatively thin recording layer.
• the term (color) recording film may be used without departing from the present invention.
• a color receiving layer may be optionally referred to as a recording layer (and vice versa) without changing the meaning, and also a color recording film may be optionally referred to as a recording film (and vice versa).
• ink in the context of the present invention always includes the term printing medium, even if in individual cases a printing medium without colorant should be used. Since, however, usually a printing ink is used as the printing medium, the term printing ink should be used comprehensively in the sense of a comprehensible representation of the invention. Thus, instead of the term ink, the term printing medium could be used without departing from the scope of the present invention.
• An ink should be understood as an ink in the sense of the present application.
• the aim of the present invention is to remove restrictions on usable film formers for non-contact inkjet or inkjet printing.
• film formers are prematurely applied in the form of liquid (flowable) ink receiving layers or films (recording layers) independently of the inkjet or ink print, into which subsequently applied (introduced) print media (printing inks) can penetrate.
• inks e.g., inks
• inks particularly low viscosity inks
• film forming components is thereby made possible. Insufficient storage stability and premature curing even of low-viscosity inks (inks) can be avoided according to the invention.
• useful film formers can be physical or mechanical (smear resistance, abrasion resistance, elasticity), in chemical (acid and base resistance), in physico-chemical (water, solvent resistance) or in photophysical (light fastness) resistances or in the adhesion of the solid film to be formed, and / or may be based on requirements for ingredients such as environmental compatibility, toxicology , Migration potential, smell or taste.
• Previously known receptive layers are penetrable (porous or swellable) and not flowable (solid) and are intended primarily to regulate the course of the registered in these solid recording layers inks. Porous layers are physically or mechanically rather limited resistant and swellable layers are physicochemically limited resistant.
• the low-viscosity liquid (low-viscosity) printing media (printing inks) applied in volume units to a liquid (flowable) ink receptive layer or a liquid ink receptive film (ink) run according to their fluidity, depending on the fluidity of the likewise liquid receptive layer and depending on the interfacial tensions.
• the rate of flow is determined by the flowability of the applied inks, by the flowability of the liquid receiving layer and by interfacial tensions as the film progresses.
• Liquid ink receiving layers or films according to the invention may comprise measures which regulate the course of the printing inks introduced into the flowable receiving layer.
• the colorants dye or pigments
• Spatial fixation of incorporated colorants may refer to collocations of the colorant or surrounding ingredients or other ingredients that are triggered by chemical interactions with ingredients of the liquid colorant-receiving layer of the present invention or the liquid color-receptive film of the present invention. Agglomerations may be associated with reductions in solubility.
• Registered colorants can also be fixed spatially by the addition of ingredients of the liquid ink-receiving layer according to the invention or the liquid ink-receiving film according to the invention, which are triggered by chemical interactions with ingredients of registered low-viscosity printing inks and lead to a sufficiently rapid reduction of the fluidity of the liquid receiving layer. Agglomerations may be associated with reductions in solubility.
• low-viscosity liquid (thin) printing media printing inks
• the film should solidify (harden).
• the present invention allows for highest film resistance and adhesion because it overcomes limitations of film formers useful in inkjet or inkjet print media.
• Film resistances are essentially the result of crosslinking, chemical functionality and coloring components of a forming solid film and depend directly on its nature.
• the degree of crosslinking determines the physical and physico-chemical properties of a film, and it is true that the higher the crosslinking the higher the lubricity and abrasion resistance and the lower the crosslinking the higher the solubility and elasticity.
• the chemical resistance is essentially the result of its functionality.
• the photophysical resistance or the light fastness of a film can be significantly determined by the photophysical resistance of the colorant.
• pigments offer the best light fastness.
• Films or layers can be classified based on the processes associated with your education. Primary can be distinguished between physical and chemical curing.
• Physical cure refers to processes for forming solid films that are purely physical in nature, leaving the chemical nature of the ingredients used intact. It can be distinguished between the drying of non-coalescing constituents, the drying by phase transition and the drying with subsequent coalescence.
• Coalescence refers to the filmed association (and vice versa).
• Film formation by drying non-coalescing constituents is the classic film-forming process of printing inks.
• the film forms after evaporation of volatile components. Remain behind the film forming, non-volatile and non-coalescing components.
• a solid film is formed by crosslinking or polymerization.
• the chemical cross-linking can be radiation-induced, chemically induced or catalyzed or spontaneous.
• Chemically induced or catalyzed curing can be oxidatively triggered by atmospheric oxygen or by acids or simply by water, to name but a few.
• Chemical curing processes can also be thermally initiated or accelerated.
• Liquid (flowable) ink receptive layers or films (receptive layers) according to the present invention may be more or less transparent and more or less colored.
• Transparent and colorless, liquid recording layers allow any penetration depths of applied, low-viscosity liquid (low-viscosity) printing media (printing inks).
• low-viscosity liquid (low-viscosity) printing media printing inks
• the reproducible color space translucent inks can be limited by the color of the substrate.
• Transparent and non-white colored, liquid recording layers limit the reproducible color space of translucent inks, depending on the penetration depth.
• Liquid (flowable) ink receiving layers or films can be used in non-sputtering coating processes (dipping, rolling, casting, flooding, analog or digital printing with printing form) or in spray coating processes (spraying or spraying, compressed air spraying, airless and high pressure spraying, electrostatic spraying , Digital printing without printing form) are applied.
• Liquid (flowable) ink receiving layers or films may be low viscosity or low viscosity ( ⁇ 8,000 mPa.s), medium viscosity or viscous (8,000 to 20,000 mPa.s) or highly viscous or viscous (> 20,000 mPa.s).
• low-viscous liquid (low-viscosity) printing media printing inks
• printing inks can not be registered in low-viscosity recording layers without spatial fixation, without the ink running, at least not in those with viscosities up to 3,000 mPa ⁇ s.
• 2-component systems consist of at least one crosslinkable film former (base) and a crosslinking film former (hardener). Such systems are not suitable as inkjet or inkjet inks because they spontaneously solidify.
• 2-component systems can be used to produce acquisition layers according to the invention.
• CMR-413.W and CMR-111 are aqueous 2-component clearcoats consisting of polyurethane (aqueous polyurethane dispersion).
• CMR-613.W refers to an isocyanate hardener solution for aqueous systems
• CMR-610 is a 100% polyfunctional aziridine crosslinker for aqueous and solvent-based systems.
• CMR-413.W in conjunction with CMR-613.W has an initial dynamic viscosity of 13.9 mPa.s and CMR-111 in conjunction with CMR-610 has an initial dynamic viscosity of 97.3 mPa.s.
• the sol-gel process refers to processes for preparing non-metallic hybrid polymeric materials from colloidal dispersions. Such dispersions are only of limited use as printing inks for ink-jet or ink printing because they are not permanently stable, but they can be used to produce recording layers according to the invention.
• two systems WFP-LTX-Clear-011 and WFP-LTX-Clear-012, whose compositions are listed in Table 1 and Table 2, were investigated.
• Table 1 Composition of the recording layer WFP-LTX-Clear-011 component Share [% by weight] Byk 345 0.50 Proxel GXL 0.10 water 28.60 2-pyrrolidone 10.00 Surfynol 420 0.50 Dipropylengykolmonomethylether 10.00 Lubaprint 205 5.00 Joncryl FLX 5100 40,00 2-dimethylaminoethanol 0.30 Xiameter OFS-6020 5.00 Component Share [% by weight] Byk 345 0.50 Proxel GXL 0.10 water 23,60 2-pyrrolidone 10.00 Surfynol 420 0.50 Dipropylengykolmonomethylether 10.00 Lubaprint 205 5.00 Joncryl FLX 5100 30.00 2-dimethylaminoethanol 0.30 AQUATIX 8421 15.00 Xiameter OFS-6020 5.00
• BYK-345® is a silicone surfactant from BYK® for aqueous paints as well as printing inks and overprint varnishes.
• Proxel® GXL is a broad-spectrum biocide from Arch Chemicals® and includes water, dipropylene glycol and 1,2-benzisothiazolin-3-one.
• Surfynol® 420 is an ethoxylated wetting agent and molecular defoamer from Air Products®.
• Lubaprint® 205 is an aqueous PE wax dispersion from Münzing®, 78628 Rottweil, DE.
• Joncryl® FLX 5100 is an RC (Rheology Controlled) acrylic emulsion from BASF®.
• AQUATIX® 8421 is a rheology-modifying wax emulsion from BYK® based on an EVA copolymer wax.
• Xiameter® OFS-6020 is a liquid alkoxysilane from DOW®.
• WFP-LTX-Clear-011 has an initial dynamic viscosity of 12.3 mPa.s and WFP-LTX-Clear-012 has an initial dynamic viscosity of 30.4 mPa.s.
• cationically curable inks are only of limited suitability for ink-jet or ink printing because polymer-forming reactions, once triggered, can proceed in the dark even without further radiation.
• this property of cationic curing inks jeopardizes the operational reliability of corresponding inkjet or inkjet printing systems.
• cationically curing printing inks are not subject to oxygen inhibition and offer a comparatively lower migration potential.
• NoriCure® UV-L 3 from Proell KG, 91781 Weissenburg, DE, and Fototex® 3D from MacDermid Autotype Ltd., Grove Road, Wantage, OX12 7BZ, United Kingdom.
• NoriCure® UV-L 3 has a viscosity of 455 mPa ⁇ s and Fototex® 3D has a viscosity of 275 mPa ⁇ s.
• ink printing inks are aqueous polyurethane dispersions, basically suitable for the design of little or no absorbent substrates and according to European Patent 1,851,063 spatially fixable in liquid color recording films according to the invention.

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• Ink Jet (AREA)
• Chemical & Material Sciences (AREA)
• Inks, Pencil-Leads, Or Crayons (AREA)
• Ink Jet Recording Methods And Recording Media Thereof (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)

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Citations (8)

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• 2014
  • 2014-11-25 EP EP15190616.1A patent/EP3006219A1/fr not_active Withdrawn
  • 2014-11-25 WO PCT/DE2014/100414 patent/WO2015078449A1/fr active Application Filing
  • 2014-11-25 US US15/100,437 patent/US20160297223A1/en not_active Abandoned
  • 2014-11-25 EP EP14828130.6A patent/EP2951024B1/fr active Active
  • 2014-11-25 DE DE112014005440.2T patent/DE112014005440A5/de active Pending
  • 2014-11-25 ES ES14828130T patent/ES2753448T3/es active Active
• 2020
  • 2020-04-21 US US16/854,354 patent/US11338603B2/en active Active

Patent Citations (8)

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