A radiation curable inkjet ink composition that includes (A) a mono-ethylenically unsaturated oligomer, (B) a mono-ethylenically unsaturated monomer, and (C) a solvent, wherein the radiation curable inkjet ink composition is substantially free of a photoinitiator and wherein a total weight of the mono-ethylenically unsaturated oligomer (A) is less than or equal to the total weight of the mono-ethylenically unsaturated monomer (B). A printed article including the radiation curable inkjet ink composition in cured form, and a method of forming an image with a thermal inkjet printhead are also provided.

A radiation curable inkjet ink composition that includes (A) a mono-ethylenically unsaturated oligomer, (B) a mono-ethylenically unsaturated monomer, and (C) a solvent, wherein the radiation curable inkjet ink composition is substantially free of a photoinitiator and wherein a total weight of the mono-ethylenically unsaturated oligomer (A) is less than or equal to the total weight of the mono-ethylenically unsaturated monomer (B). A printed article including the radiation curable inkjet ink composition in cured form, and a method of forming an image with a thermal inkjet printhead are also provided.

A chlorine-free, low migration, electron-beam curable composition which is a primer or first-down white ink. Preferably, applied by offset printing, the composition provides good adhesion of electron-beam curable offset inks to substrates, especially plastics. Moreover, the present invention is directed to a chlorine-free, low migration lithographic electron-beam curable primer providing good ink adhesion to corona-treated PET films for flexible packaging.

A chlorine-free, low migration, electron-beam curable composition which is a primer or first-down white ink. Preferably, applied by offset printing, the composition provides good adhesion of electron-beam curable offset inks to substrates, especially plastics. Moreover, the present invention is directed to a chlorine-free, low migration lithographic electron-beam curable primer providing good ink adhesion to corona-treated PET films for flexible packaging.

A film-printable UV-curable ink composition, a method for forming a bezel pattern using the same, a bezel pattern, and a display substrate comprising the bezel pattern are disclosed herein. In some embodiments, the ink composition includes a black pigment, a dispersant, an alicyclic epoxy compound, an oxetane compound, an acrylic or silicone surfactant, an organic solvent having a boiling point of 200 C. or more, a photosensitizer, a photopolymerization initiator and an adhesion promoter, wherein a weight ratio of the epoxy compound to the oxetane compound is 1:3 to 1:5. The bezel pattern produced by the ink composition is thin and yet has excellent light-shielding properties so as to prevent a panel pattern of a foldable display, such as a mobile device, from being visible and light leakage from occurring.

A film-printable UV-curable ink composition, a method for forming a bezel pattern using the same, a bezel pattern, and a display substrate comprising the bezel pattern are disclosed herein. In some embodiments, the ink composition includes a black pigment, a dispersant, an alicyclic epoxy compound, an oxetane compound, an acrylic or silicone surfactant, an organic solvent having a boiling point of 200 C. or more, a photosensitizer, a photopolymerization initiator and an adhesion promoter, wherein a weight ratio of the epoxy compound to the oxetane compound is 1:3 to 1:5. The bezel pattern produced by the ink composition is thin and yet has excellent light-shielding properties so as to prevent a panel pattern of a foldable display, such as a mobile device, from being visible and light leakage from occurring.

A radiation-curable ink jet composition includes monomers, the monomers including 86% by mass or more of one or more monofunctional monomers relative to all the monomers, where a glass transition temperature of the radiation-curable ink jet composition calculated from glass transition temperatures of all the monomers is 42 C. or higher.

A radiation-curable ink jet composition includes monomers, the monomers including 86% by mass or more of one or more monofunctional monomers relative to all the monomers, where a glass transition temperature of the radiation-curable ink jet composition calculated from glass transition temperatures of all the monomers is 42 C. or higher.

Radiation-curable compositions of Pigment Violet 23 are described which can be used advantageously in UV inks for inkjet printing machines. Soiling containing such UV inks, especially within inkjet printing machines, can be removed particularly easily in a contactless procedure with conventional cleaners. The radiation-curable compositions described contain at least one modified Pigment Violet 23 which carries at least one polar functional group of the formula (I):

X-E (I) where X is a bridging group and E is a polar molecule radical.

Radiation-curable compositions of Pigment Violet 23 are described which can be used advantageously in UV inks for inkjet printing machines. Soiling containing such UV inks, especially within inkjet printing machines, can be removed particularly easily in a contactless procedure with conventional cleaners. The radiation-curable compositions described contain at least one modified Pigment Violet 23 which carries at least one polar functional group of the formula (I):

X-E (I) where X is a bridging group and E is a polar molecule radical.