C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 11/10 (2006.01) C09D 11/00 (2006.01)
Patent
CA 2617066
The invention pertains to a radiation curable hot melt inkjet ink, comprising a carrier composition that comprises one or more radiation curable compounds and an agent that is able to reversibly gel the carrier composition, which agent is soluble in the carrier composition at a jetting temperature of the ink and creates the gelled carrier at a temperature below the jetting temperature, characterised in that the gelled carrier composition is a thixotropic composition which has a recovery time of more than 60 seconds after the gel has been mechanically disturbed to lower it's viscosity. The invention also pertains to a method for printing a substrate with this radiation curable ink.
L'invention concerne une encre pour impression à jet d'encre en fusion chaude durcissant sous l'effet rayonnant. Cette encre comprend une composition de support contenant un ou plusieurs composés durcissant au rayonnement et un agent capable de gélifier de façon réversible cette composition de support, ledit agent étant soluble dans ladite composition de support à une température de giclement de l'encre et rendant le support gélifié à une température inférieure à la température de giclement. Cette composition de support gélifiée est une composition thixotrope possédant un temps de récupération supérieur à 60 secondes après l'agitation mécanique du gel afin d'en abaisser la viscosité. Elle concerne également un procédé d'impression d'un substrat au moyen de cette encre durcissant sous l'effet d'un rayonnement.
Ogrinc Hendrik J. A.
Pelzers Ronald J. H. M. C.
Vercoulen Gerardus C. P.
Wetjens Peter M. A.
Cassan Maclean
Oce-Technologies B.v.
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