An ink, wherein the ink includes a jettable vehicle, and a colorant configured to fluoresce in a visible light range when exposed to an ultraviolet (UV) light, wherein the ink is edible, and wherein the ink is invisible when viewed under white light conditions.

Ink comprising a compound of Formula (1) and salts thereof: Formula (1) wherein: Pc represents a phthalocyanine nucleus of Formula (2); Formula (2) x is greater than 0 and less than 1.8; y and z are both greater than 0; and the sum of (x+y+z) is 2.4 to 4.5: and a liquid medium. Also an ink-jet printing process, a material printed with an ink of the invention and an ink jet printing cartridge containing an ink of the invention ##STR00001##

An ink containing water, a water-soluble organic solvent and a colorant, wherein the ink exhibits a (.gamma. cos .theta.).sup.1/2 value of 4 to 6, and satisfies Formula (I): 0.3.ltoreq.((.gamma.' cos .theta.').sup.1/2/(.gamma. cos .theta.).sup.1/2).ltoreq.0.85, wherein .gamma. represents a surface tension (mN/m) of the ink upon initial exposure to atmospheric conditions, .theta. represents an initial contact angle of the ink with respect to plain paper upon initial exposure to atmospheric condit...

An edible ink with a viscosity of about 2000 to 16000 cp at 25.degree. C. Certain embodiments relate to applying the edible ink to a substrate using a lithographic printing process.

Improved combination eradicable ball-pen and re-write inks are disclosed. The combination eradicable and re-write ball-pen inks disclosed include water, glycerol, one or more acids and an eradicable dye. Glycerol is present in an amount greater than the water content, which is relatively low and the eradicable dye is provided in substantial amounts so that the glycerol and eradicable dye provide the requisite viscosity for a ball-pen ink. The combination of the high dye content and acid content ...

A fluorescent water base ink for ink-jet recording to be used for an ink-jet printer contains water, a pigment, a compound having primary or secondary amide group, and a fluorescent dye represented by the following formula (1): ##STR00001## wherein R.sup.1 represents OH or N(R.sup.3)R.sup.4, R.sup.2 represents hydrogen atom or halogen atom, and each of R.sup.3 and R.sup.4 represents hydrogen atom or alkyl group. A sufficient OD value and a fluorescence value are obtained while securing the vivid...

An oil-based ink composition for ink jet recording of the present invention contains a colorant and at least 50% by weight of a mixed solvent made by mixing from 0.02 to 4 parts by weight of a lactone-type solvent with 1 part by weight of polyoxyethylene glycol dialkyl ether represented by the following general formula (1): R.sup.11--(OC.sub.2H.sub.4).sub.n--OR.sup.12 General Formula (1) (wherein R.sup.11, R.sup.12 represent alkyl groups having from 1 to 3 carbon atoms and can be the same or dif...

A peelable stenciling ink for imprinting indicia such as letters, numbers and symbols on a surface of an article such as a sport ball made of leather or a synthetic polymer, e.g., a thermoplastic material, consists of a solvent, a dye dispersed in the solvent, and a film-forming polymer soluble in the dye-solvent solution to form a thick paste and hardenable into a solid, flexible film upon evaporation of the solvent from a thin layer of ink applied to an article surface. A method of using the i...

A water base ink for ink-jet recording contains 0.1% by weight to 4.0% by weight of C.I. Direct Yellow 132; not less than 0.5% by weight of glycol ether having a melting point of not more than -45.degree.C.; and a water-soluble organic solvent in which a solubility of C.I. Direct Yellow 132 at 20.degree. C. is not less than 5%. The ink satisfies 0.2.ltoreq.B/A and 3.ltoreq.C/A. B/A represents a weight ratio of the glycol ether to the C.I. Direct Yellow 132 contained in the ink, and C/A represent...

A water base ink for ink-jet recording comprises water, self-dispersing type carbon black, an anionic surfactant, and a nonionic surfactant. The anionic surfactant is a surfactant represented by the formula (1) and/or a surfactant represented by the formula (2). The nonionic surfactant is a surfactant represented by the formula (3) or a mixture of a surfactant represented by the formula (4) and a surfactant represented by the formula (5). No ink discharge failure occurs, the long term stability ...