A luminescent optical device, comprising an optical substrate that provides a wave guide, and an illuminating ink composition are disclosed. The device comprises a cured layer of said ink composition at an interface of said waveguide, substantially comprising a polymer matrix and a luminescence agent that is dispersed in said polymer matrix. The ink composition comprises a polymerizable acrylate compound, particularly a poly-di-acrylate matrix, preferably a poly-glycol di-acrylate matrix. The ink composition further contains a polymerization initiator that is configured and capable of releasing free radicals during polymerization of said acrylate compound and a polymerization promoter that comprises a thiol compound.

A luminescent optical device, comprising an optical substrate that provides a wave guide, and an illuminating ink composition are disclosed. The device comprises a cured layer of said ink composition at an interface of said waveguide, substantially comprising a polymer matrix and a luminescence agent that is dispersed in said polymer matrix. The ink composition comprises a polymerizable acrylate compound, particularly a poly-di-acrylate matrix, preferably a poly-glycol di-acrylate matrix. The ink composition further contains a polymerization initiator that is configured and capable of releasing free radicals during polymerization of said acrylate compound and a polymerization promoter that comprises a thiol compound.

An object is to achieve both good washing fastness and texture by combining a urethane resin of high fracture elongation with a small quantity of crosslinking agent. As a means for achieving the object, an inkjet ink composition for textile printing is provided that contains a pigment, a water-dispersible resin, a crosslinking agent, and water; wherein, as the water-dispersible resin, a resin of 1200 to 1800% in fracture elongation and 10 to 48 MPa in tensile strength is contained by 1.0 to 3.0 parts by mass relative to 1 part by mass of the pigment, and the crosslinking agent is contained by 0.03 to 0.17 parts by mass relative to 1 part by mass of the water-dispersible resin.

A conductive ink is provided, which includes an ink solvent and a conductive composition dispersed in the ink solvent. The conductive composition includes a silver nanoparticle and a molecular chain of polyaniline formed on a surface of the silver nanoparticle. A method for preparing a conductive ink and a flexible display device are further provided. The conductive ink has good film forming property and good conductivity.

A conductive ink is provided, which includes an ink solvent and a conductive composition dispersed in the ink solvent. The conductive composition includes a silver nanoparticle and a molecular chain of polyaniline formed on a surface of the silver nanoparticle. A method for preparing a conductive ink and a flexible display device are further provided. The conductive ink has good film forming property and good conductivity.

Provided are an image forming method including a step of preparing an ink which contains water and an organic solvent A having a vapor pressure of 0.20 kPa or less at 20° C. and in which a content of the organic solvent A is 10% by mass or greater, a step of preparing an aggregating liquid containing an aggregating agent, a step of preparing an overcoat liquid which contains a resin and an organic solvent B having a vapor pressure of 2.50 kPa or greater at 20° C. and in which a content of the organic solvent B is 10% by mass or greater, a step of applying the aggregating liquid onto an impermeable base material, a step of applying the ink to at least a portion of a region to which the aggregating liquid has been applied according to an ink jet method to form an image, and a step of applying the overcoat liquid onto the region to which the aggregating liquid has been applied in the impermeable base material, on which the image has been formed; and an ink set.

Provided are an image forming method including a step of preparing an ink which contains water and an organic solvent A having a vapor pressure of 0.20 kPa or less at 20° C. and in which a content of the organic solvent A is 10% by mass or greater, a step of preparing an aggregating liquid containing an aggregating agent, a step of preparing an overcoat liquid which contains a resin and an organic solvent B having a vapor pressure of 2.50 kPa or greater at 20° C. and in which a content of the organic solvent B is 10% by mass or greater, a step of applying the aggregating liquid onto an impermeable base material, a step of applying the ink to at least a portion of a region to which the aggregating liquid has been applied according to an ink jet method to form an image, and a step of applying the overcoat liquid onto the region to which the aggregating liquid has been applied in the impermeable base material, on which the image has been formed; and an ink set.

An inkjet ink contains a pigment, resin particles, dipropylene glycol monomethyl ether, triethylene glycol monobutyl ether, and propylene glycol. The resin particles contain polycarbonate polyurethane resin. The resin particles have a percentage content of at least 2.0% by mass and no greater than 9.0% by mass. The dipropylene glycol monomethyl ether has a percentage content of at least 7.0% by mass and no greater than 27.0% by mass. The triethylene glycol monobutyl ether has a percentage content of at least 4.0% by mass and no greater than 12.0% by mass. The propylene glycol has a percentage content of at least 4.0% by mass and no greater than 18.0% by mass.

An inkjet ink contains a pigment, resin particles, dipropylene glycol monomethyl ether, triethylene glycol monobutyl ether, and propylene glycol. The resin particles contain polycarbonate polyurethane resin. The resin particles have a percentage content of at least 2.0% by mass and no greater than 9.0% by mass. The dipropylene glycol monomethyl ether has a percentage content of at least 7.0% by mass and no greater than 27.0% by mass. The triethylene glycol monobutyl ether has a percentage content of at least 4.0% by mass and no greater than 12.0% by mass. The propylene glycol has a percentage content of at least 4.0% by mass and no greater than 18.0% by mass.

A sol-gel mixture for overcoating surface-relief structures includes at least a first Titanium(IV) precursor and a second Titanium(IV) precursor. The first Titanium(IV) precursor includes a sulfate or phosphate ligand. The second Titanium(IV) precursor includes a carboxylate ligand. The first Titanium(IV) precursor and the second Titanium(IV) precursor are dissolved or suspended in a solvent.