A three-dimensional printing kit can include a polymeric build material including thermoplastic elastomeric particles having a D50 particle size from about 2 m to about 150 m, and a fusing agent. The fusing agent can include water, from about 5 wt % to about 40 wt % lower alkyldiol organic co-solvent, and a radiation absorber to generate heat from absorbed electromagnetic radiation.

A three-dimensional printing kit can include a polymeric build material including thermoplastic elastomeric particles having a D50 particle size from about 2 m to about 150 m, and a fusing agent. The fusing agent can include water, from about 5 wt % to about 40 wt % lower alkyldiol organic co-solvent, and a radiation absorber to generate heat from absorbed electromagnetic radiation.

An ink comprises (i) a carrier; (ii) graphene and/or graphene oxide particles dispersed in the carrier; and (iii) a viral active and/or anti-microbial component adhered to the graphene and/or graphene oxide particles.

An ink composition contains a semi-drying solvent; a pigment; an alkyd resin; and an amine-based polymeric dispersant. The composition contains 5 wt % or more of the alkyd resin, based on the total weight of the composition, and 5 wt % or more of the amine-based polymeric dispersant, based on the total weight of the composition.

An inkjet recording apparatus includes two or more line recording heads and inks each accommodated in a corresponding one of the line recording heads. The line recording heads perform ink ejection onto a recording medium in a specific order at a regular ejection interval T. The ejection interval T is at least 300 milliseconds and no greater than 530 milliseconds. The line recording heads include at least a first line recording head that performs ink ejection onto the recording medium first and a second line recording medium that performs ink ejection onto the recording medium next to the first line recording head. Each of the inks contains a pigment, a water-soluble organic solvent, and water. The water-soluble organic solvent includes a glycol ether compound.

An inkjet recording apparatus includes two or more line recording heads and inks each accommodated in a corresponding one of the line recording heads. The line recording heads perform ink ejection onto a recording medium in a specific order at a regular ejection interval T. The ejection interval T is at least 300 milliseconds and no greater than 530 milliseconds. The line recording heads include at least a first line recording head that performs ink ejection onto the recording medium first and a second line recording medium that performs ink ejection onto the recording medium next to the first line recording head. Each of the inks contains a pigment, a water-soluble organic solvent, and water. The water-soluble organic solvent includes a glycol ether compound.

Electrically conductive ink compositions are provided that comprise at carbon nanomaterials of one-dimensional, two-dimensional, and quasi-three-dimensional nanostructures and/or their combinations, and/or doping with elements such as nitrogen, boron, sulfur, in certain ratios. The carbon nanomaterials are selected from the group consisting of graphene and graphene oxide particles, carbon nanotubes, and graphene aerosol gels.

An ink set according to an embodiment of the present disclosure includes a white ink composition containing a white color material and a non-white ink composition containing a non-white color material, and is used for recording on a low-absorptive recording medium or a non-absorptive recording medium, in which the white ink composition and the non-white ink composition are aqueous ink jet inks, and the white ink composition contains a polyether-modified silicone-based surfactant having a weight average molecular weight Mw of 2,000 or less.

An ink set according to an embodiment of the present disclosure includes a white ink composition containing a white color material and a non-white ink composition containing a non-white color material, and is used for recording on a low-absorptive recording medium or a non-absorptive recording medium, in which the white ink composition and the non-white ink composition are aqueous ink jet inks, and the white ink composition contains a polyether-modified silicone-based surfactant having a weight average molecular weight Mw of 2,000 or less.

Provided is an aqueous ink for ink jet using a self-dispersible pigment as a coloring material, the aqueous ink being capable of recording an image having excellent color developability and the aqueous ink being capable of suppressing the deposition of an aggregate in the cap of a recording head. The aqueous ink is an aqueous ink for ink jet including a self-dispersible pigment. The self-dispersible pigment is a self-dispersible pigment in which a group represented by the general formula (1) is bonded to a surface of a particle of a pigment, and the aqueous ink has a dynamic surface tension at 10 milliseconds of 52 mN/m or less. In the general formula (1), M.sup.1s each independently represent a hydrogen atom, an alkali metal, ammonium or an organic ammonium, and * represents a bonding position to the surface of the particle of the pigment.