Patent ID: 8256884

Claim:
An ink jet ink comprising a dye, an aqueous vehicle, and a surfactant combination comprising: (a) an acetylene alcohol comprising at least one compound having the generic structure: wherein R and R 1 are C1-C10 linear or branched alkyl groups or hydrogen, and wherein only one hydrogen on either R or R 1 is replaced by a hydroxy group; and (b) a siloxane surfactant comprising at least one compound having the generalized structure wherein E is —CH 3 or —O—Si(CH 3 ) 3 , provided that E is —CH 3 when x is greater than 0; EO is ethylene oxide, PO is propylene oxide, G=-CH 2 —, or —CH 2 —CH 2 —CH 2 —, x, y, and z are independently about 0 to about 40; and wherein the acetylene alcohol is present in the amount of at least about 0.3%, and the siloxane surfactant is present in the amount of at least about 0.03 to about 0.5 percent, based on the weight of the ink composition.