摘要:
An ink that may be used in ink jet devices is a photochromic ink comprising an ink vehicle that includes at least one radiation curable component, at least one photochromic material and at least one photoinitiator. The ink is cured via exposure to radiation that cures the at least one radiation curable component of the ink. A radiation curable ink capable of exhibiting photochromatic color changes, which may be used to indicate a document's authenticity, is thus achieved.
摘要:
The radiation-curable phase-change ink composition having at least one radiation curable fluorescent co-monomer and a gellant. The radiation-curable phase-change ink composition offers both document security features as well as potential brand highlight features. The radiation-curable phase-change ink composition combines the unique attributes of the UV curable gel system, with its tremendous substrate latitude, with the ability to add tunable fluorescent effects without the safety concerns of small molecule fluorescent additives. Exemplary ink compositions include a first co-monomer, least one radiation curable fluorescent co-monomer, and a gellant. Methods for making and using these ink compositions and ink compositions are also provided.