Compositions and methods for coupling metals to aluminum surfaces are provided. The compositions are prepared as aqueous solutions or suspensions, and can be applied to the aluminum surface using conventional printing techniques. Rheology of the printable composition can be adjusted to provide a gel or a cream. Curing steps, if necessary, are performed at low temperatures that are compatible with plastic/polymer components of mass produced devices, such as aluminum RFID antennae.

The present invention relates to silver ink for printing a three dimensional microstructure and a 3D printing method using the same. The present invention provides a method for printing a 3-dimensional silver structure pattern, the method including: a step of providing a nozzle with liquid ink including capped silver nanoparticles and exhibiting Newtonian fluid behavior; a step of forming, at a predetermined point on a substrate, a meniscus of the liquid ink with ink extruded from the nozzle; a step of allowing the ink of the nozzle to be extruded by means of the surface tension of the meniscus while moving the nozzle along a path in a direction perpendicular to the substrate, in a direction parallel to the substrate, or according to a combination of said directions; and a step of forming a silver structure pattern corresponding to the movement path of the nozzle by evaporating a solvent from the extruded ink from the region closer to the substrate. The present invention can provide a 3D printing method based on direct ink printing that is suitable for application to 3D printing electronic technology.

The present invention relates to silver ink for printing a three dimensional microstructure and a 3D printing method using the same. The present invention provides a method for printing a 3-dimensional silver structure pattern, the method including: a step of providing a nozzle with liquid ink including capped silver nanoparticles and exhibiting Newtonian fluid behavior; a step of forming, at a predetermined point on a substrate, a meniscus of the liquid ink with ink extruded from the nozzle; a step of allowing the ink of the nozzle to be extruded by means of the surface tension of the meniscus while moving the nozzle along a path in a direction perpendicular to the substrate, in a direction parallel to the substrate, or according to a combination of said directions; and a step of forming a silver structure pattern corresponding to the movement path of the nozzle by evaporating a solvent from the extruded ink from the region closer to the substrate. The present invention can provide a 3D printing method based on direct ink printing that is suitable for application to 3D printing electronic technology.

The present disclosure provides an ink fluid set containing an aqueous pretreatment composition and an aqueous inkjet ink. This ink fluid set is particularly suitable for printing on offset coated media.

The present disclosure provides an ink fluid set containing an aqueous pretreatment composition and an aqueous inkjet ink. This ink fluid set is particularly suitable for printing on offset coated media.

An inkjet printable ionic conductive ink for producing a touch sensor device is provided. The inkjet printable ionic conductive ink includes a hydrophilic polymer and an ionic salt, a mixture of solvents in which the hydrophilic polymer and the ionic salt are dissolved therein to form a solution, and a surfactant to render the solution inkjet printable. A method of producing the inkjet printable ionic conductive ink is also provided. The method includes dissolving a hydrophilic polymer and an ionic salt in a mixture of solvents to form a solution, and mixing the solution with a surfactant to render the solution inkjet printable. A touch sensor panel comprising the ionic conductive ink and a method of producing the touch sensor panel are also provided.

An inkjet printable ionic conductive ink for producing a touch sensor device is provided. The inkjet printable ionic conductive ink includes a hydrophilic polymer and an ionic salt, a mixture of solvents in which the hydrophilic polymer and the ionic salt are dissolved therein to form a solution, and a surfactant to render the solution inkjet printable. A method of producing the inkjet printable ionic conductive ink is also provided. The method includes dissolving a hydrophilic polymer and an ionic salt in a mixture of solvents to form a solution, and mixing the solution with a surfactant to render the solution inkjet printable. A touch sensor panel comprising the ionic conductive ink and a method of producing the touch sensor panel are also provided.

An inkjet composition for an inkjet printer, a light-emitting device including the same, and a method of manufacturing the light-emitting device are provided. The ink composition may include light-emitting diodes and a solvent. The solvent may have a first viscosity at a first temperature section that may be greater than a second viscosity at a second temperature section. The solvent may include an ester compound of citric acid, glycol, alkanediol, alkanolamine, alkenic acid, alkenol, a pyrrolidone group-containing compound, glycerol, a compound represented by Formula 1, a compound represented by Formula 2, or any combination thereof: ##STR00001##
Substituents in Formula 1 and Formula 2 may be understood as described in connection with the detailed description. Each of the light-emitting diodes may have a size in a range of about 0.1 μm to about 10 μm.

An inkjet composition for an inkjet printer, a light-emitting device including the same, and a method of manufacturing the light-emitting device are provided. The ink composition may include light-emitting diodes and a solvent. The solvent may have a first viscosity at a first temperature section that may be greater than a second viscosity at a second temperature section. The solvent may include an ester compound of citric acid, glycol, alkanediol, alkanolamine, alkenic acid, alkenol, a pyrrolidone group-containing compound, glycerol, a compound represented by Formula 1, a compound represented by Formula 2, or any combination thereof: ##STR00001##
Substituents in Formula 1 and Formula 2 may be understood as described in connection with the detailed description. Each of the light-emitting diodes may have a size in a range of about 0.1 μm to about 10 μm.

Inkjet printing apparatus including: ink accommodating unit storing ink; ejection head configured to eject the ink to form print layer; and heating unit configured to heat print target, wherein the ink is clear ink including resin and water, dry film of the clear ink has glass transition temperature of 50° C. or more, the inkjet printing apparatus has first printing mode and second printing mode, and the heating unit is configured to heat the print target so that expression: T.sub.matte>T.sub.gloss is satisfied, where the T.sub.matte is temperature (° C.) of the print target in printing region printed in the first printing mode obtained when the clear ink is deposited on the print target, and the T.sub.gloss is temperature (° C.) of the print target in printing region printed in the second printing mode obtained when the clear ink is deposited on the print target.