A jet ink and ink jet printing process

Details A jet ink and ink jet printing process A jet ink and ink jet printing process

C - Chemistry, Metallurgy

09

D

C09D 11/00 (2006.01)

Patent

CA 2618757

The invention relates to a process of ink jet printing which comprises the steps of printing an ink onto a substrate and curing the ink using radiation from an LED. The invention also relates to a cationic ink jet ink for use in such a process, the ink comprising a cationically curable component including at least one oxirane, cyclic ester or cyclic carbonate monomer and a photoinitiation system including an iodonium salt photoinitiator and a sensitizer, the photoinitiation system being able to absorb radiation at a wavelength in the range of from 300 nm to 420 nm.

L~invention concerne un procédé d~impression jet d~encre comprenant des étapes d~impression de l~encre sur un substrat et de durcissement de l~encre au moyen de radiations issues d~une LED. L~invention concerne également une encre cationique pour impression jet d~encre destinée à une utilisation dans un tel procédé. L~encre selon l~invention comprend un composant durcissable cationiquement, incluant au moins une oxirane, un ester cyclique ou un monomère de carbonate cyclique, et un système de photoinitiation incluant un photoinitiateur à base de sel d~iodonium, et un sensibilisateur, ledit système de photoinitiation étant capable d~absorber une radiation à une longueur d~onde comprise entre 300 et 420 nm.

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