Aqueous ink, ink cartridge, and ink jet recording method

• Main Authors: Kakikawa Hiroshi, Okazaki Shuichi, Nakagawa Kouhei
• Format: Patent
• Language: Chinese; English
• Published: 03.08.2016
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; 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; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention relates to aqueous ink, an ink cartridge, and an ink jet recording method. An ink jet aqueous ink includes a pigment; a resin dispersant; a fluorinated surfactant; and a water-soluble organic solvent. The pigment comprises quinacridone pigments comprising C.I. pigment violet 19, Red 122, 202 or 209; solid solution pigments of two or more thereof; diketopyrrolopyrrole pigments comprising C.I. pigment red 254, 255 or 272; or C.I. pigment violet 23. The dispersant has an acid value of 150-200 mg KOH/g. The surfactant comprise a perfluoroalkyl ethylene oxide adduct having a C6 or lower perfluoroalkyl group. The solvent contains a water-soluble organic solvent A and B having a dielectric constant of 40.0 or more and 3.0-20.0, respectively. Content p of the pigment is 5.00 mass % or less. Content a of solvent A to content p is 2.0 or more. Content b of solvent B to content a is 0.6 or less. Content b to content f of the surfactant is 10.0 or more. 本发明涉及水性墨、墨盒和喷墨记录方法。种喷墨用水性墨，其包括颜料；树脂分散剂；氟系表面活性剂；和水溶性有机溶