In one aspect, build materials and support materials for use with a 3D printer are described herein. Such materials include a phosphor component in combination with other components. In some embodiments, the phosphor component of a build material or support material is present in the material in an amount of 0.001-0.5 wt. % and has a peak photoluminescence (PL) emission wavelength of 430-750 nm and a photoluminescence quantum yield (QY) of 0.10-1.

Described herein are printing inks that are safe for direct contact with food. The inks contain colorants and other substances which comply with regulations governing the amounts of substances determined to be safe in the event one or more of the ink-containing substances were to migrate into foods or beverages, The inks exhibit resistance to removal. Also described are sets of inks. The inks provide wide color gamut.

Described herein are printing inks that are safe for direct contact with food. The inks contain colorants and other substances which comply with regulations governing the amounts of substances determined to be safe in the event one or more of the ink-containing substances were to migrate into foods or beverages, The inks exhibit resistance to removal. Also described are sets of inks. The inks provide wide color gamut.

Provided are an active energy ray-curable ink that includes a photopolymerizable monomer, a photopolymerization initiator, and a colorant, wherein the photopolymerizable monomer includes a monomer A1 having a surface tension of 31.0 mN/m or less, the photopolymerizable monomer has an average surface tension of 31.0 mN/m or less, and the content of a surfactant is 0.01% by mass or less of the total amount of the active energy ray-curable ink, an ink set, and an image recording method.

The present disclosure relates to a pH-sensitive indicator label using a pH-sensitive color-changing ink composition, and a packaging material, the pH-sensitive indicator label including: a pH-sensitive color-changing ink composition layer including a pH-sensitive color-changing ink composition; a first film on which the pH-sensitive color-changing ink composition layer is formed; and a second film laminated onto the first film to cover the pH-sensitive color-changing ink composition formed on the first film. The pH-sensitive color-changing ink composition of the pH-sensitive color-changing ink composition layer includes a pH-sensitive indicator prepared by mixing a plurality of pH color-changing dyes of which colors change according to the pH ranges thereof and a dissolving ink capable of dissolving the pH-sensitive indicator. The packaging material includes a container into which a product is inserted, a through hole passing through the container in a region not in contact with the product, and a label attached to the through hole.

An object is to improve the lamination strength and anti-blocking suitability of matters printed with an aqueous white inkjet ink composition containing titanium oxide, etc., on polyethylene terephthalate, polypropylene, nylon, and other resin films. As a means for achieving the object, an ink set is provided that includes a combination of: an aqueous primer composition containing an acrylic resin and/or vinyl acetate resin, and a calcium salt; and an aqueous white inkjet ink composition containing a polyester polyurethane resin emulsion with a rate of elongation of 500 to 1500% by 0.1 to 10.0 percent by mass in solids content in the aqueous white inkjet ink composition, a wax emulsion, and a titanium oxide.

An antimicrobial composition is disclosed. The antimicrobial coating composition includes at least one cured phase change ink which may include one or more crosslinked polymers, a photoinitiator, a wax, a gellant, and an antimicrobial additive. The composition also includes an engineered surface topography formed by the cured phase change ink. A method of preparing a textured antimicrobial surface is also disclosed. The method may include designing a template having a texture, printing the template onto a substrate using an uncured antimicrobial ink, and providing a light source to crosslink the uncured antimicrobial ink.

An ink set contains white ink and color ink, wherein the difference in static surface tension between the white ink and the color ink is 1.0 mN/m or less and each difference in dynamic surface tension between the white ink and the color ink at each bubble life time of 15 msec, 150 msec, and 1,500 msec at 25 degrees C. is 1.0 mN/m or less as measured by maximum bubble pressure technique.

An ink set contains white ink and color ink, wherein the difference in static surface tension between the white ink and the color ink is 1.0 mN/m or less and each difference in dynamic surface tension between the white ink and the color ink at each bubble life time of 15 msec, 150 msec, and 1,500 msec at 25 degrees C. is 1.0 mN/m or less as measured by maximum bubble pressure technique.

Provided in one example herein is a method of printing. The method includes disposing onto a transfer paper an ink composition to form thereon an image, the ink composition including pigments and latex particulates. The method includes transferring the image from the imaged transfer paper onto a substrate comprising fabric by a lamination process. The lamination process includes: laminating together the substrate, the imaged transfer paper, and a release paper, whereby the image is transferred from the transfer paper onto the substrate.