Abstract: A jet printing ink composition for printing on treated or untreated surfaces of polyolefin plastics such as polyethylene and polypropylene in which the ink composition has a pH within the range of 7.0-10.5 and which is formulated to contain 5-20% by weight styrene-acrylic copolymer resin, 3-12 parts by weight plasticizer per 100 parts by weight of resin, 0-20 parts by weight modifying resin per 100 parts by weight of resin, 0.5-6% by weight colorant, 0-10% by weight evaporation retardant, the remainder being water and C.sub.1 -C.sub.3 alcohol in the ratio of 80-10 parts by weight alcohol to 20-90 parts by weight water.

Abstract: A fluorescent printing ink for non-impact type application, especially used for coding purposes, in which the fluid ink composition is formulated of an organic solvent base containing 0.005 to 2.0% by weight fluorescent dye, up to 60% by weight resinous binder, up to 5% by weight of an organic brightener, and 0.1 to 3.0% by weight organic phosphor, and which also includes an evaporation retardant in an amount within the range of 2 to 30% by weight and an alkali metal thiocyanate in an amount up to 2% by weight, and in which the ingredients are all dissolved in the organic solvent.

Abstract: An ink composition for printing onto the surfaces of glass or other glazed ceramic surfaces by jet printing in which the preferred formulation for the printing ink composition comprises 2 - 20% by weight of a linear novolac resin, 0.6 - 3% by weight of an alcohol or water and alcohol soluble dyestuff, 3 - 7% by weight of an evaporation retardant in the form of a glycol ether or glycol ester, with the remainder water and alcohol, with the water present in an amount up to 50% by weight of the alcohol and which may contain a soluble ionizable salt when the electrical resistivity of the ink composition exceeds 2000 ohm/cm.