PHOTOCURING INKJET INK AND IMAGE FORMING METHOD USING SAME

• Main Authors: TAKABAYASHI, TOSHIYUKI, MASUMI, SATOSHI
• Format: Patent
• Language: English; French; Japanese
• Published: 13.06.2013
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; FILLING PASTES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTIVE PRINTING MECHANISMS; STAMPS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYPEWRITERS; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS THEREFOR; WOODSTAINS

Provided is a photocuring inkjet ink comprising a curing monomer, a photopolymerization initiator, a gelling agent, a coloring material, and a curing oligomer. The photocuring inkjet ink is characterized in that the curing oligomer has from two to twenty functional groups, that the glass transition temperature thereof is 40°C or higher, and that the curing oligomer content is from 2 to 20% by mass relative to the mass of the ink as a whole. L'invention porte sur une encre à jet d'encre photodurcissable, laquelle encre comprend un monomère de durcissement, un amorceur de photo polymérisation, un agent de gel, un matériau colorant et un oligomère de durcissement. L'encre à jet d'encre photodurcissable est caractérisée en ce que l'oligomère de durcissement a de 2 à 20 groupes fonctionnels, en ce que sa température de transition vitreuse est supérieure ou égale à 40°C, et en ce que la teneur en oligomère de durcissement est de 2 à 20 % en masse par rapport à la masse de l'encre toute entière.