An ink contains water, an organic solvent, a resin, and a pigment, wherein the organic solvent has a Hansen solubility parameter (HSP) value in a Hansen sphere in a δD axis, δP axis, and δH axis coordinate space of a solid content of the ink.

An ink contains water, an organic solvent, a resin, and a pigment, wherein the organic solvent has a Hansen solubility parameter (HSP) value in a Hansen sphere in a δD axis, δP axis, and δH axis coordinate space of a solid content of the ink.

A fixer fluid can include a fixer vehicle with water, an NH-type or N-alkylated lactam co-solvent, and a phosphate ester surfactant. The fixer fluid can further include from 0.5 wt % to 12 wt % an azetidinium-containing polyamine polymer dispersed in the fixer vehicle.

A fixer fluid can include a fixer vehicle with water, an NH-type or N-alkylated lactam co-solvent, and a phosphate ester surfactant. The fixer fluid can further include from 0.5 wt % to 12 wt % an azetidinium-containing polyamine polymer dispersed in the fixer vehicle.

A black sheet (1) includes a laminate of a base sheet (11) and an infrared reflecting layer (12). The CIE color values (L*, a*, b*) and the infrared reflectance R/[%] at a wavelength of 850 nm are within the following respective ranges. 18≤L*≤36, −3≤a*≤3, −3≤b*≤3, 12≤R

A black sheet (1) includes a laminate of a base sheet (11) and an infrared reflecting layer (12). The CIE color values (L*, a*, b*) and the infrared reflectance R/[%] at a wavelength of 850 nm are within the following respective ranges. 18≤L*≤36, −3≤a*≤3, −3≤b*≤3, 12≤R

Provided herein are stretchable conductive inks consisting of a continuous polymer phase with dispersed silver flakes and a low melting metal or alloy, wherein initial resistivity is measured before elongation and the resistivity of the stretchable conductive ink composition is less than 10 times the initial resistivity at 50% elongation.

Provided herein are stretchable conductive inks consisting of a continuous polymer phase with dispersed silver flakes and a low melting metal or alloy, wherein initial resistivity is measured before elongation and the resistivity of the stretchable conductive ink composition is less than 10 times the initial resistivity at 50% elongation.

The present disclosure relates to an electrophotographic ink composition. The composition comprises thermoplastic polymer, solder material, conductive filler and liquid carrier. The present disclosure also relates to a method of printing a conductive trace on a print substrate. The method comprises electrophotographically printing the electrophotographic ink composition described above onto a print substrate.

An aqueous ink jet ink composition according to the present embodiment is an aqueous ink jet ink composition for use in an ink jet recording method that includes ejecting ink from an ink jet head. The ink jet head includes nozzles that have a side wall surface, and the side wall surface has a scalloped shape in which a scallop width S1 and a notch depth S2 satisfy S1/S2≥4. The aqueous ink jet ink composition includes a self-dispersed pigment and a solvent that includes a compound represented by formula (1) below.

R.sub.1—O—R.sub.2—OH  (1)

In formula (1), R.sub.1 represents a hydrogen atom, a methyl group, or an ethyl group, and R.sub.2 represents a divalent saturated hydrocarbon group having 5 or fewer carbon atoms or represents a group represented by formula (2) below.

R.sub.3—O—R.sub.4  (2)

In formula (2), R.sub.3 and R.sub.4 each independently represent a divalent saturated hydrocarbon group having 2 or 3 carbon atoms.