A method of printing with coffee-based ink comprises providing a thermal ink-jet cartridge having a quantity of a coffee-based ink disposed within; receiving optical density data from a user via a touch-screen computerized interface, where the data describes an optical density of the coffee-based ink present within an ink-jet pod; and computing a customized droplet-size for the coffee-based ink in its current state within the thermal ink-jet cartridge. A suitable printing apparatus can include coffee-based ink in a cartridge, an image-processing system, an image processing module for determining, inter alia, droplet size and missing/defective nozzles, and a nozzle-compensation module. Suitable ink formulations are human-edible and aqueous.

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 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 ink jet ink composition includes: an acetoacetanilide-based monoazo pigment coated with a water-insoluble polymer; 1-(2-hydroxyethyl)-2-pyrrolidone; and water.

An ink jet ink composition includes: an acetoacetanilide-based monoazo pigment coated with a water-insoluble polymer; 1-(2-hydroxyethyl)-2-pyrrolidone; and water.

A method of manufacturing a carbon nanotube (CNT) composite material structure is provided. The method includes providing ink, in which a CNT composite material including a CNT and a rheological modifier is dispersed, to a nozzle, positioning the nozzle at a predetermined point on a substrate, and moving the nozzle along a predetermined path on the substrate while discharging the ink from the nozzle by surface tension of a meniscus formed at a leading end of the nozzle and printing a CNT composite material pattern corresponding to a movement path of the nozzle. In printing the CNT composite material pattern, the pattern is stacked as the CNT composite material by evaporation of a solvent within a meniscus formed by the ink extruded from the nozzle between the nozzle and the substrate.

A compound represented by formula (1) or a salt thereof, and an ink including the same. In formula (1), each Q independently represents a halogen atom; R.sup.11 and R.sup.12 independently represent an alkyl group substituted by an ionic hydrophilic group; and A.sup.1 represents a C1-C3 alkoxy-substituted alkylamino group ##STR00001##

A compound represented by formula (1) or a salt thereof, and an ink including the same. In formula (1), each Q independently represents a halogen atom; R.sup.11 and R.sup.12 independently represent an alkyl group substituted by an ionic hydrophilic group; and A.sup.1 represents a C1-C3 alkoxy-substituted alkylamino group ##STR00001##

Disclosed is a composition containing copper particles and organic solvents, in which the organic solvents include a first organic solvent having a vapor pressure at 20° C. of 200 Pa or more and 20 kPa or less, and a second organic solvent having a vapor pressure at 20° C. of 0.5 Pa or more and less than 200 Pa.

Disclosed is a composition containing copper particles and organic solvents, in which the organic solvents include a first organic solvent having a vapor pressure at 20° C. of 200 Pa or more and 20 kPa or less, and a second organic solvent having a vapor pressure at 20° C. of 0.5 Pa or more and less than 200 Pa.