The present invention relates to a method for the preparation of dies for moulds for the production of tiles with three dimensional texture.

A non-Newtonian photo-curable ink composition that comprises from about 0.1 wt % to about 10 wt % of metal oxide particles having an average particle size ranging from 1 to 50 nm; from about 0.05 wt % to about 10 Wt % of an inorganic salt; an organic solvent; a photo-initiator; and a polymerizable material; wherein the ink composition has a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first state and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state. Also described herein is a method for making such non-Newtonian photo-curable ink composition and a method for producing printed images using such non-Newtonian photo-curable ink composition.

A non-Newtonian photo-curable ink composition that comprises from about 0.1 wt % to about 10 wt % of metal oxide particles having an average particle size ranging from 1 to 50 nm; from about 0.05 wt % to about 10 Wt % of an inorganic salt; an organic solvent; a photo-initiator; and a polymerizable material; wherein the ink composition has a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first state and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state. Also described herein is a method for making such non-Newtonian photo-curable ink composition and a method for producing printed images using such non-Newtonian photo-curable ink composition.

The invention provides a triacrylate compound represented by the following formula (1). In the formula, each R is independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a halogen atom, R.sup.1 and R.sup.2 are each independently a linear or branched alkyl group having 1 to 6 carbon atoms, and R.sup.3 is a linear or branched alkyl group having 1 to 6 carbon atoms or a hydroxymethyl group.

Build materials for 3D printing applications are described herein which, in some embodiments, comprise a dye component operable to alter spectral characteristics of the printed part over the course of the build cycle. In some embodiments, for example, the dye component can provide desirable light penetration depth during article printing and sufficient optical clarity during final light curing processes.

An object of the present invention is to provide an ultraviolet curing liquid composition having high sensitivity, excellent storage stability, low viscosity, and excellent fixability after ultraviolet curing. The ultraviolet curable liquid composition of the present invention is an ultraviolet curable liquid composition containing a cationically polymerizable liquid monomer, a photopolymerization initiator and a photopolymerization sensitizer, wherein the cationically polymerizable liquid monomer is a vinyl ether compound, the photopolymerization initiator includes a compound represented by general formula (1), and the photopolymerization sensitizer includes (A) at least one compound selected from the group consisting of a compound represented by general formula (2) and a compound represented by general formula (3), and (B) at least one compound selected from the group consisting of a compound represented by general formula (4) and a compound represented by general formula (5).

An object of the present invention is to provide an ultraviolet curing liquid composition having high sensitivity, excellent storage stability, low viscosity, and excellent fixability after ultraviolet curing. The ultraviolet curable liquid composition of the present invention is an ultraviolet curable liquid composition containing a cationically polymerizable liquid monomer, a photopolymerization initiator and a photopolymerization sensitizer, wherein the cationically polymerizable liquid monomer is a vinyl ether compound, the photopolymerization initiator includes a compound represented by general formula (1), and the photopolymerization sensitizer includes (A) at least one compound selected from the group consisting of a compound represented by general formula (2) and a compound represented by general formula (3), and (B) at least one compound selected from the group consisting of a compound represented by general formula (4) and a compound represented by general formula (5).

A multi-fluid kit for three-dimensional printing can include a fusing agent and a detailing agent. The fusing agent can include water and a radiation absorber. The radiation absorber absorbs radiation energy and converts the radiation energy to heat. The detailing agent includes a lipophilic phase discontinuously dispersed within an aqueous phase by a surfactant. The lipophilic phase includes an organosilane having a central silicon atom coupled to a C6 to C24 aliphatic or alicyclic hydrocarbon and multiple hydrolyzable groups. The organosilane is present in the detailing agent at from about 1 wt % to about 20 wt %.

A multi-fluid kit for three-dimensional printing can include a fusing agent and a detailing agent. The fusing agent can include water and a radiation absorber. The radiation absorber absorbs radiation energy and converts the radiation energy to heat. The detailing agent includes a lipophilic phase discontinuously dispersed within an aqueous phase by a surfactant. The lipophilic phase includes an organosilane having a central silicon atom coupled to a C6 to C24 aliphatic or alicyclic hydrocarbon and multiple hydrolyzable groups. The organosilane is present in the detailing agent at from about 1 wt % to about 20 wt %.

An ink jet recording method includes a step of ejecting a radiation curable ink jet composition on a recording medium and a step of emitting radiation rays to the recording medium, the ink jet composition contains a colorant and a thioxanthone-based photopolymerization initiator, the colorant includes neither a yellow-based colorant nor a black-based colorant, and emission energy of the radiation rays is set to 900 mJ/cm.sup.2 or more per one emission.