An example of a continuous ink supply system includes an ink supply reservoir, a conduit fluidly connected to the ink supply reservoir, and a low-conductivity ink contained in the ink supply reservoir. The low-conductivity ink includes a self-dispersed carbon black pigment, a non-ionic surfactant, a co-solvent, and a balance of water. The low-conductivity ink has a conductivity of 400 or less μS/cm.

Disclosed herein are complexes comprising graphene compositions thereof. Also disclosed herein are methods of synthesising said complexes and compositions, and the use of said complexes and compositions in, for instance, biomolecular sensing.

An ink contains a coloring material, a urethane resin, diethylene glycol diethyl ether, and a siloxane compound, wherein diethylene glycol diethyl ether has a proportion of 6.0 percent or greater by mass of the total amount of the ink.

An ink contains a coloring material, a urethane resin, diethylene glycol diethyl ether, and a siloxane compound, wherein diethylene glycol diethyl ether has a proportion of 6.0 percent or greater by mass of the total amount of the ink.

The present disclosure describes multi-fluid kits for three-dimensional printing, materials kits for three-dimensional printing, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a pore-promoting agent. The fusing agent can include water and a radiation absorber. The radiation absorber can absorb radiation energy and convert the radiation energy to heat. The pore-promoting agent can include water and a water-soluble pore-promoting compound. The pore-promoting compound can chemically react at an elevated temperature to generate a gas.

The present disclosure describes multi-fluid kits for three-dimensional printing, materials kits for three-dimensional printing, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a pore-promoting agent. The fusing agent can include water and a radiation absorber. The radiation absorber can absorb radiation energy and convert the radiation energy to heat. The pore-promoting agent can include water and a water-soluble pore-promoting compound. The pore-promoting compound can chemically react at an elevated temperature to generate a gas.

An ink contains a coloring material, a water-soluble organic solvent, water, an acetylene-based compound having an HLB of from 8 to 13, and a compound represented by Chemical Formula 1 or Chemical Formula 2,

##STR00001## where m represents an integer of from 1 to 4,

##STR00002## where R.sup.1 represents an alkyl group having 1 to 20 carbon atoms, aralkyl group having 7 or 8 carbon atoms, or ally group, 1 represents 0 or an integer of from 1 to 7, and n represents an integer of from 20 to 200.

Provided is an ink including: pigment-encapsulating resin particles encapsulating a pigment; and resin particles containing a resin different from a resin of the pigment-encapsulating resin particles.

An aqueous dispersion contains emulsion resin particles that contains pigment enclosing emulsion resin particles enclosing an inorganic pigment, wherein the pigment enclosing emulsion resin particles have a 50 percent cumulative volume particle diameter (D50) of from 40 to 300 nm as measured by laser diffraction scattering method, wherein the pigment enclosing emulsion resin particles have an average aspect ratio of from 1.0 to 1.5.

An aqueous inkjet ink of the present disclosure is an active energy ray curable aqueous inkjet ink including a water-soluble monomer having a polymerizable group and a hydrazide compound. The water-soluble monomer is a curable substance having a ketone structure.