A metallic nanoparticle composition dispenser includes a piston-cylinder assembly and a capillary tube. The piston-cylinder assembly includes a cylinder, a pneumatic port at first end of the cylinder, an outlet port at a second end of the cylinder opposite the first end, and a piston movable in the cylinder between the first end and the second end. The capillary tube has a tube inlet and a tube outlet, with the tube inlet being coupled to the outlet port of the cylinder. A metallic nanoparticle composition is contained in the cylinder. The metallic nanoparticle composition dispenser is configured such that the metallic nanoparticle composition is extruded by the piston through the capillary tube under pneumatic actuation by a regulated pneumatic system coupled to the pneumatic port.

A metallic nanoparticle composition dispenser includes a piston-cylinder assembly and a capillary tube. The piston-cylinder assembly includes a cylinder, a pneumatic port at first end of the cylinder, an outlet port at a second end of the cylinder opposite the first end, and a piston movable in the cylinder between the first end and the second end. The capillary tube has a tube inlet and a tube outlet, with the tube inlet being coupled to the outlet port of the cylinder. A metallic nanoparticle composition is contained in the cylinder. The metallic nanoparticle composition dispenser is configured such that the metallic nanoparticle composition is extruded by the piston through the capillary tube under pneumatic actuation by a regulated pneumatic system coupled to the pneumatic port.

A disclosed liquid composition includes particles; a resin; a solvent A; and a solvent B differing from the solvent A, wherein a surface tension with respect to air at 25° C. is 25 mN/m or more and less than 50 mN/m, a 90% diameter is 2.5 μm or less, and a median diameter is 1 μm or less.

An electroconductive substrate including a base material and a metal wiring made of at least either of silver and copper, and the electroconductive substrate has an antireflection region formed on part or all of the metal wiring surface. This antireflection region is composed of roughened particles made of at least either of silver and copper and blackened particles finer than the roughened particles and embedded between the roughened particles. The blackened particles are made of silver or a silver compound, copper or a copper compound, or carbon or an organic substance having a carbon content of 25 wt % or more. The antireflection region has a surface with a center line average roughness of 15 nm or more and 70 nm or less. The electroconductive substrate is formed from metal wiring from a metal ink that forms roughened particles, followed by application of a blackening ink containing blackened particles.

An electroconductive substrate including a base material and a metal wiring made of at least either of silver and copper, and the electroconductive substrate has an antireflection region formed on part or all of the metal wiring surface. This antireflection region is composed of roughened particles made of at least either of silver and copper and blackened particles finer than the roughened particles and embedded between the roughened particles. The blackened particles are made of silver or a silver compound, copper or a copper compound, or carbon or an organic substance having a carbon content of 25 wt % or more. The antireflection region has a surface with a center line average roughness of 15 nm or more and 70 nm or less. The electroconductive substrate is formed from metal wiring from a metal ink that forms roughened particles, followed by application of a blackening ink containing blackened particles.

Provided are processes of applying a decorative imaging to a substrate that includes providing a stamp pad comprising a child and environmentally friendly disperse dye composition, inking a stamp with the disperse dye composition, optionally transferring the disperse dye composition from the stamp to an intermediate ink receptive surface using the rubber stamp to thereby place an image on an intermediate ink receptive surface, and transferring the image to a dye receptive object by application of sufficient heat and pressure. The disperse dye compositions provided herein are safe, environmentally friendly, and able to be used in stamp pad imaging processes.

Provided are processes of applying a decorative imaging to a substrate that includes providing a stamp pad comprising a child and environmentally friendly disperse dye composition, inking a stamp with the disperse dye composition, optionally transferring the disperse dye composition from the stamp to an intermediate ink receptive surface using the rubber stamp to thereby place an image on an intermediate ink receptive surface, and transferring the image to a dye receptive object by application of sufficient heat and pressure. The disperse dye compositions provided herein are safe, environmentally friendly, and able to be used in stamp pad imaging processes.

A scented color-changing system for revealing a hidden message, brand, picture, and the like on a substrate such as a paper when a fragrance is applied or released on the substrate. The hidden message contains a color former such as a leuco dye and the fragrance contains a color developer such as zinc chloride that reacts with the color former to reveal the message. The fragrance can be sprayed on the substrate or released from microcapsules embedded in or disposed on the substrate by rupturing the microcapsules. The scented color-changing system is particularly suited for use with fragrance test strips, advertising mailers, magazine inserts, and the like.

Water-based ink including a pigment mix and a method to form a digital print on a substrate with a pigment mix having large pigments and a Piezo ink head equipped with an ink circulation system, the method including: providing a water-based ink including an aqueous pigment mix including settling pigments, a binder including an acrylic resin dispersion, and a viscosity increasing substance including glycol and/or glycerin, providing a steric stabilization of the pigments and adapting the size of the pigments and the viscosity of the water-based ink such that a settling velocity of the pigments exceeds about 0.001 mm/min at 25° C., circulating said water-based ink within said at least one Piezo print head, and printing a digital image with said at least one Piezo print head by applying ink drops of said water-based ink on the substrate.

Water-based ink including a pigment mix and a method to form a digital print on a substrate with a pigment mix having large pigments and a Piezo ink head equipped with an ink circulation system, the method including: providing a water-based ink including an aqueous pigment mix including settling pigments, a binder including an acrylic resin dispersion, and a viscosity increasing substance including glycol and/or glycerin, providing a steric stabilization of the pigments and adapting the size of the pigments and the viscosity of the water-based ink such that a settling velocity of the pigments exceeds about 0.001 mm/min at 25° C., circulating said water-based ink within said at least one Piezo print head, and printing a digital image with said at least one Piezo print head by applying ink drops of said water-based ink on the substrate.