Printing Ink

Printing Ink The invention is directed towards an inkjet ink comprising a radiation curable oligomer, at least 30 % by weight of organic solvent based on the total weight of the ink, 5 to 50 % by weight of water based on the total weight of the ink, a photoinitiator and optionally a colourant, and also to a method of inket printing comprising jetting said ink from a printhead onto a substrate;evaporating at least a portion of the solvent and/or water from the printed ink; andexposing the printed ink to actinic radiation to cure the radiation curable oligomer.

A printing ink

Printing on non elongatable substrate using a primer layer and cationic ink

A method of printing onto a non elongatable substrate comprises, depositing a primer layer onto the substrate, the primer comprising a thermoplastic resin; at least partially drying and/or curing the primer; inkjet printing a hybrid cationic compatible curable solvent / radiation curable ink onto the primer layer; drying the ink layer; depositing a protective layer onto the ink layer, wherein the protective layer comprises a cationic curable diluent and a cationic photoinitiator; and curing the protective layer; wherein the primer layer thermoplastic resin is selected from: polyurethane polymethacrylate, polyvinyl, poly(cellulose acetate butyrate), polyester, epoxy resin, hydrocarbon resin, ketone or aldehyde resin, amino resin, and copolymers and blends thereof, and a solvent and/or monofunctional radiation-curable diluent, and, when a monofunctional radiation-curable diluents is present, a photoinitiator, The present invention also relates to a printed substrate obtainable by the method ...

Printing on leather or synthetic leather using a primer layer

A method of printing onto a leather or synthetic leather substrate comprises, depositing a primer layer onto the substrate, the primer comprising a thermoplastic resin; at least partially drying and/or curing the primer; inkjet printing a solvent-based ink onto the primer layer; drying the solvent-based ink layer; depositing a protective layer onto the solvent-based ink layer, wherein the protective layer comprises a thermoplastic resin and a crosslinking agent; and drying and/or curing the protective layer; the primer and protective layer thermoplastic resins are selected from: polyurethane polymethacrylate, polyvinyl, poly(cellulose acetate butyrate), polyester, epoxy resin, hydrocarbon resin, ketone or aldehyde resin, amino resin, and copolymers and blends thereof, and a solvent and/or monofunctional radiation-curable diluent, and, when a monofunctional radiation-curable diluents is present, a photoinitiator, The present invention also relates to a printed substrate obtainable by the ...

Transparent composition for application onto a printed substrate

A printing process comprises the steps of inkjet printing an ink onto a substrate to form an image, applying onto the image a transparent composition having a viscosity of at least 100 cP and comprising a radiation-curable material and at least 10 wt.% organic solvent, evaporating at least some of the organic solvent from the composition, and curing the radiation-curable material. A transparent composition is disclosed which comprises 45-65 wt.% radiation-curable oligomer having a molecular weight of 500-4000, 25-40 wt.% organic solvent, 0-4 wt.% silicone acrylate, 0-8 wt.% photoinitiator, and less than 5 wt.% (meth)acrylates having a molecular weight below 600. The composition has a boiling point of 140-250°C and a viscosity of 100-2000 cP. An inkjet printer is also claimed, which comprises a printhead for printing an image on a substrate, means for contact printing the transparent composition onto the image, means for evaporating the solvent from the composition, and a radiation source ...

Printing on leather or synthetic leather using an aqueous primer layer and a hybrid ink

A method of printing onto a leather or synthetic leather substrate comprises: depositing a primer layer onto the substrate, the primer comprising a thermoplastic resin and water; at least partially drying and/or curing the primer; inkjet printing a hybrid solvent/radiation curable ink onto the primer layer; drying and curing the hybrid ink layer; optionally depositing a protective layer onto the solvent-based ink layer, wherein the protective layer comprises a thermoplastic resin and a crosslinking agent; and drying and/or curing the protective layer; wherein the hybrid solvent/radiation-curable ink comprises at least 50% by weight organic solvent, based on the total weight of the ink, radiation-curable material and a photoinitiator and the primer and protective layer thermoplastic resins are selected from: polyurethane polymethacrylate, polyvinyl, poly(cellulose acetate butyrate), polyester, epoxy resin, hydrocarbon resin, ketone or aldehyde resin, amino resin, and copolymers and blends ...

Printing on non elongatable substrates using a primer layer

A method of printing onto a non elongatable substrate comprises, depositing a primer layer onto the substrate, the primer comprising a thermoplastic resin; at least partially drying and/or curing the primer; inkjet printing a solvent-based ink onto the primer layer; drying the solvent-based ink layer; depositing a protective layer onto the solvent-based ink layer, wherein the protective layer comprises a thermoplastic resin and a crosslinking agent; and drying and/or curing the protective layer; the primer and protective layer thermoplastic resins are selected from: polyurethane polymethacrylate, polyvinyl, poly(cellulose acetate butyrate), polyester, epoxy resin, hydrocarbon resin, ketone or aldehyde resin, amino resin, and copolymers and blends thereof, and a solvent and/or monofunctional radiation-curable diluent, and, when a monofunctional radiation-curable diluents is present, a photoinitiator, The present invention also relates to a printed substrate obtainable by the method of the ...

Ink-jet printing method

This invention relates to a method of single-pass reel-to-reel inkjet printing comprising the following steps in the following order: (i) providing an inkjet ink comprising at least 30% of a volatile organic solvent based on the total weight of the ink, a radiation-curable monomer and/or a radiation-curable oligomer, a photoinitiator and a dispersed pigment wherein the ink has a viscosity of 30 mPas or less at 25°C; (ii) depositing the ink on a substrate using an inkjet printer; (iii) partially curing the ink by exposing the ink to a first dose of radiation to pin the ink to the substrate; (iv) evaporating the solvent from the pinned ink; and (v) fully curing the ink by exposing the ink to a second dose of radiation.

Method of printing

A method of printing onto a non elongatable substrate comprises: depositing a primer layer onto the substrate, the primer comprising a thermoplastic resin and water; at least partially drying and/or curing the primer; inkjet printing a hybrid solvent/radiation curable ink onto the primer layer; drying and curing the hybrid ink layer; optionally depositing a protective layer onto the solvent-based ink layer, wherein the protective layer comprises a thermoplastic resin and a crosslinking agent; and drying and/or curing the protective layer; wherein the hybrid solvent/radiation-curable ink comprises at least 50% by weight organic solvent, based on the total weight of the ink, radiation-curable material and a photoinitiator and the primer and protective layer thermoplastic resins are selected from: polyurethane polymethacrylate, polyvinyl, poly(cellulose acetate butyrate), polyester, epoxy resin, hydrocarbon resin, ketone or aldehyde resin, amino resin, and copolymers and blends thereof; and ...

Printing Method

This invention relates to method of inkjet printing comprising the following steps: (i) providing an inkjet ink comprising a multifunctional (meth)acrylate monomer and/or oligomer, an N-vinyl amide and/or N-(meth)acryloyl amide, a radical photoinitiator and a tertiary amine which may be present as a separate component or covalently bonded to the multifunctional (meth)acrylate monomer and/or oligomer, wherein the ink contains less than 5 wt% of water and volatile organic solvents based on the total weight of the ink; (ii) printing the ink onto a substrate using an inkjet printer; and (iii) curing the ink with a radiation source which emits all of its peak intensities within a wavelength of 230-460 nm and with a total power output of 10-100 mW/cm2 within the wavelength of 230-460 nm.

A printing ink

Method of printing

A method of printing onto a non elongatable substrate comprises: depositing a primer layer onto the substrate, the primer comprising a thermoplastic resin; at least partially drying and/or curing the primer; inkjet printing a hybrid solvent/radiation curable ink onto the primer layer; drying and curing the hybrid ink layer; optionally depositing a protective layer onto the solvent-based ink layer, wherein the protective layer comprises a thermoplastic resin and a crosslinking agent; and drying and/or curing the protective layer; wherein the hybrid solvent/radiation-curable ink comprises at least 50% by weight organic solvent, based on the total weight of the ink, radiation-curable material and a photoinitiator and the primer and protective layer thermoplastic resins are selected from: polyurethane polymethacrylate, polyvinyl, poly(cellulose acetate butyrate), polyester, epoxy resin, hydrocarbon resin, ketone or aldehyde resin, amino resin, and copolymers and blends thereof, and a solvent ...

A printing ink

Method of printing

A method of printing onto a leather or synthetic leather substrate comprises: depositing a primer layer onto the substrate, the primer comprising a thermoplastic resin; at least partially drying and/or curing the primer; inkjet printing a hybrid solvent/radiation curable ink onto the primer layer; drying and curing the hybrid ink layer; optionally depositing a protective layer onto the solvent-based ink layer, wherein the protective layer comprises a thermoplastic resin and a crosslinking agent; and drying and/or curing the protective layer; wherein the hybrid solvent/radiation-curable ink comprises at least 50% by weight organic solvent, based on the total weight of the ink, radiation-curable material and a photoinitiator and the primer and protective layer thermoplastic resins are selected from: polyurethane polymethacrylate, polyvinyl, poly(cellulose acetate butyrate), polyester, epoxy resin, hydrocarbon resin, ketone or aldehyde resin, amino resin, and copolymers and blends thereof, ...

Radiation curable inks

A radiation-curable ink having low nozzle blocking, good solvent and water rub resistance and good adhesion, the ink having a viscosity of 1 to 80 mPaâ‹ s and being suitable for use in ink jet printing and comprising: Component A: a water-soluble, radiation-curable polymer; Component B: a colorant; Component C: water; and Component D: a water-dispersible, radiation-curable polyurethane.

Printing on leather or synthetic leather using a primer layer and cationic ink

A method of printing onto a leather or synthetic leather substrate comprises, depositing a primer layer onto the substrate, the primer comprising a thermoplastic resin; at least partially drying and/or curing the primer; inkjet printing a hybrid cationic compatible curable solvent / radiation curable ink onto the primer layer; drying the ink layer; depositing a protective layer onto the ink layer, wherein the protective layer comprises a cationic curable diluent and a cationic photoinitiator; and curing the protective layer; wherein the primer layer thermoplastic resin is selected from: polyurethane polymethacrylate, polyvinyl, poly(cellulose acetate butyrate), polyester, epoxy resin, hydrocarbon resin, ketone or aldehyde resin, amino resin, and copolymers and blends thereof, and a solvent and/or monofunctional radiation-curable diluent, and, when a monofunctional radiation-curable diluents is present, a photoinitiator, The present invention also relates to a printed substrate obtainable ...

Printing method

A method of ink jet printing comprises: providing a multi chromatic inkjet ink set; jetting the ink onto a substrate; applying a first dose of radiation to pin the ink on the substrate; and exposing the pinned ink to a second, higher dose of radiation to form a fully cured image; wherein each ink in the set includes a radiation curable monomer and/or oligomer; a photoinitiator, and a pigment; and wherein, at the wavelength of the first dose of radiation, at least one ink has a pigment with a higher radiation absorption and a photo initiator which absorbs more strongly compared to the pigment and photo initiator in at least one other ink and/or at least one ink has a pigment with a lower radiation absorption and a photo initiator which absorbs less strongly compared to the pigment and photo initiator in at least one other ink; so that the pinning responses of the inks are consistent. The inks may include a solvent which is dried between the two doses of radiation. The radiation doses are ...

Printing ink

The present invention provides a screen printing ink which is substantially free of water, which ink comprising at least 25% by weight of organic solvent based on the total weight of the ink, a radiation-curable oligomer, a free-radical photoinitiator and 10% by weight or less of a dispersed pigment based on the total weight of the ink. The invention also provides a method of screen printing comprising (i) screen printing the screen printing ink as defined above on to a substrate; (ii)evaporating at least a portion of the solvent from the printed ink; and (iii) exposing the printed ink to actinic radiation to cure the ink.

Radiation curable inks

A radiation-curable ink comprising: (a)a polyurethane having ethylenically unsaturated groups; (b)a water-soluble triacrylate; (c)a colorant; (d)a liquid medium comprising water and organic solvent; and (e)optionally a photoinitiator; and (f)optionally a surfactant; wherein the weight of component (d) is greater than the combined weight of components (a), (b), (c), (e) and (f).