The present disclosure provides an inkjet ink and primer fluid set containing an aqueous primer composition and aqueous inkjet inks. At least one of the inks contains a first pigment dispersion and a second pigment dispersion. The first pigment dispersion forms an aggregation with the primer composition whereas the second pigment dispersion does not form an aggregation with the primer composition.

The present disclosure provides an inkjet ink and primer fluid set containing an aqueous primer composition and aqueous inkjet inks. The aqueous primer composition forms a coating on a print substrate. The inkjet inks contain a polymeric binder that interacts with the primer composition. This fluid set is particularly suitable for printing on non-porous plastic substrate.

The present disclosure provides an inkjet ink and primer fluid set containing an aqueous primer composition and aqueous inkjet inks. The aqueous primer composition forms a coating on a print substrate. The inkjet inks contain a polymeric binder that interacts with the primer composition. This fluid set is particularly suitable for printing on non-porous plastic substrate.

A liquid photosensitive ink composition capable of forming a cured product with a high refractive index and applicable to an inkjet method even though the photosensitive ink composition does not include the solvent, or include small amount of the solvent, a cured product of the photosensitive ink composition, a display panel having a film consisting of the cured product, and a method for producing the cured product using the above photosensitive ink composition. In a photosensitive ink composition including a photopolymerizable compound, metal compound particles, and a photopolymerization initiator, a sulfide compound having specific structure and a (meth)acrylate compound having specific structure as the photopolymerizable compound, and at least one selected from the group consisting of titanium oxide particles, barium titanate particles, cerium oxide particles, and zinc sulfide particles, as the metal compound particles are used.

A liquid photosensitive ink composition capable of forming a cured product with a high refractive index and applicable to an inkjet method even though the photosensitive ink composition does not include the solvent, or include small amount of the solvent, a cured product of the photosensitive ink composition, a display panel having a film consisting of the cured product, and a method for producing the cured product using the above photosensitive ink composition. In a photosensitive ink composition including a photopolymerizable compound, metal compound particles, and a photopolymerization initiator, a sulfide compound having specific structure and a (meth)acrylate compound having specific structure as the photopolymerizable compound, and at least one selected from the group consisting of titanium oxide particles, barium titanate particles, cerium oxide particles, and zinc sulfide particles, as the metal compound particles are used.

An aqueous inkjet printing ink composition that is cured by the following radiation rays (1) includes: an acylphosphine oxide-based compound as a photopolymerization initiator of 3 to 10% by mass; a monofunctional water-soluble monomer of 30 to 50% by mass; a multifunctional water-soluble monomer of 10 to 30% by mass; and a pigment based on the whole ink composition, wherein the radiation rays (1) are radiation rays that contain a wavelength of 800 nm and a wavelength of 385 nm and have an irradiation intensity of 100 mW/cm.sup.2 or less at a wavelength of 385 nm. The aqueous inkjet printing ink composition can be cured by specific radiation rays and does not change color of the ink composition in an exemplary embodiment.

An aqueous inkjet printing ink composition that is cured by the following radiation rays (1) includes: an acylphosphine oxide-based compound as a photopolymerization initiator of 3 to 10% by mass; a monofunctional water-soluble monomer of 30 to 50% by mass; a multifunctional water-soluble monomer of 10 to 30% by mass; and a pigment based on the whole ink composition, wherein the radiation rays (1) are radiation rays that contain a wavelength of 800 nm and a wavelength of 385 nm and have an irradiation intensity of 100 mW/cm.sup.2 or less at a wavelength of 385 nm. The aqueous inkjet printing ink composition can be cured by specific radiation rays and does not change color of the ink composition in an exemplary embodiment.

An active energy ray-curable ink including a radical polymerizable monomer, a radical polymerization initiator, a pigment, a pigment dispersing resin, an organic onium salt, and a radical polymerization inhibitor, wherein the content of the radical polymerization inhibitor is 0.05% to 5.0% by mass of the total amount of the active energy ray-curable ink and an image recording method.

An active energy ray-curable ink including a radical polymerizable monomer, a radical polymerization initiator, a pigment, a pigment dispersing resin, an organic onium salt, and a radical polymerization inhibitor, wherein the content of the radical polymerization inhibitor is 0.05% to 5.0% by mass of the total amount of the active energy ray-curable ink and an image recording method.

An edible aqueous inkjet ink and a tablet. The edible aqueous inkjet ink contains a relatively large amount of volatile alcohol, which has improved or even excellent transfer durability and reduces ink ejection failure. The tablet includes a portion printed with the edible aqueous inkjet ink. The edible aqueous inkjet ink according to the present embodiment includes food coloring, ethanol, and a surfactant which has a hydrophilic-lipophilic balance value (HLB) in a range of 16 or more and 20 or less. The food coloring may preferably be sodium copper chlorophyllin. The surfactant may preferably be a sucrose fatty acid ester.