| abstract |
The present invention relates to an ink composition suitable for being ejected from an inkjet marking device at an operating temperature. The ink composition comprises a water dispersible resin and has a dynamic surface tension lower than 35 mN / m and a static surface tension higher than 21 mN / m, both determined at the operating temperature. The ink composition may include a mixture of water-soluble organic solvents having a relative dielectric constant difference of greater than 5, preferably 10 to 50. The ink composition may comprise a polymer cosolvent, in particular polyethylene glycol and polyethylene glycol (di) methyl ether. The ink composition includes at least one surfactant of a first type surfactant selected from the group consisting of acetylene glycol and ethoxylated acetylene glycol, and a group consisting of a silicone surfactant and a fluorosurfactant. A mixture of surfactants may be included, including at least one surfactant of the second type selected from |