Object of the present invention are novel printing inks with organic solvents for sublimation transfer printing which contain a high concentration of very finely dispersed, transferable cationic dyes, and specifically;A. at least one cationic dye or a mixture of cationic dyes,B. at least one soluble resin as stabilizer, film former and thickener,C. a low-viscosity, low molecular organic solvent or solvent mixture in which the cationic dye or dyes are only slightly soluble at room temperature and the resin or resins are at least 5% soluble,D. an inorganic or organic acid acceptor or mixtures thereof, andE. at least one indicator dye which is inert to inorganic or organic acid acceptors.