METHOD FOR PRODUCING INK COMPOSITION AND METHOD AND DEVICE FOR INTRODUCING LIQUID

• Main Authors: AZUMA TAKASHI, TSUBAKI KEIICHIRO
• Format: Patent
• Language: English
• Published: 22.02.2007
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide a method for producing an ink composition in which storage stability and discharge stability are good and a stable good image can be obtained. SOLUTION: A method for producing an ink composition contains a step of dispersing materials comprising at least a coloring agent, a thermoplastic polymer having a glass transition temperature (Tg) of 30-100°C and an amphoteric block copolymer into a solvent to give a dispersion and a step of treating the dispersion by heating at higher than the glass transition temperature of the thermoplastic polymer. A method for producing an ink composition contains a step of dispersing materials comprising at least a coloring agent, a monomer which is converted into a thermoplastic polymer having Tg of 30-100°C by polymerization, and an amphiphilic block copolymer into a solvent to give a dispersion, a step of polymerizing the monomer and a step of treating the dispersion by heating at higher than Tg of the thermoplastic polymer. COPYRIGHT: (C)2007,JPO&INPIT