AQUEOUS INK FOR OPTICAL FIXING AND METHOD FOR PRODUCING FILM USING THE SAME

• Main Authors: KAWASE TAKEO, NAKAMURA JUNICHI
• Format: Patent
• Language: English; Japanese
• Published: 28.11.2019
• Subjects: ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; 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; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SELECTIVE PRINTING MECHANISMS; SPRAYING OR ATOMISING IN GENERAL; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide an aqueous ink which has excellent adhesiveness to a substrate and suppresses bleed-out.SOLUTION: There are provided: an aqueous ink for optical fixing comprising a polymer (A) having a light absorbing group and a weight average molecular weight of 1000 or more and water; and an aqueous ink for optical fixing comprising light absorbing inorganic particles (B), water and water-insoluble polymer particles (C). The light absorbing group preferably is an ultraviolet-absorbing group, the polymer (A) is a water-insoluble polymer particle (a) and preferably is an emulsion and the light absorbing inorganic particles (B) preferably are ultraviolet-absorbing inorganic particles.SELECTED DRAWING: Figure 3 【課題】基材への密着性に優れ、且つブリードアウトが抑制された水性インクを提供すること。【解決手段】光吸収性基を有し、重量平均分子量が１０００以上であるポリマー（Ａ）と、水と、を含む光定着用水性インク、ならびに、光吸収性無機粒子（Ｂ）と、水と、水不溶性のポリマー粒子（Ｃ）と、を含む光定着用水性インク。上記光吸収性基は紫外線吸収性基であることが好ましく、上記ポリマー（Ａ）が水不溶性のポリマー粒子（ａ）であり、エマルションであることが好ましい。また、上記光吸収性無機粒子（Ｂ）は紫外線吸収性無機粒子であることが好ましい。【選択図】図３