INK FOR INK JET RECORDING AND INK JET RECORDING

• Main Authors: SUZUKI JUNJI, YAMASHITA KUNICHI, HASHIMOTO TAKESHI, ICHIZAWA NOBUYUKI, YUI TOSHIKI
• Format: Patent
• Language: English
• Published: 28.10.1997
• Edition: 6
• Subjects: ADHESIVES; 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; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide an ink for ink jet recording which does not clog a nozzle, possesses excellent dispersion stability, ejection response, and ejection stability and can stably yield an image having high resolution, high density and high evenness and to provide an ink jet recording method. SOLUTION: This ink for ink jet recording comprises water, a colorant, a water-soluble org. solvent, and a polymeric dispersant, wherein the polymeric dispersant comprises a plurality of polymeric dispersants having different HLB. Pref., when two to n polymeric dispersants have the following HLBs: HLB1 < HLB2 <...<HLBn , the at least two polymeric dispersants satisfy a requirement represented by the following formula; 1<=HLBx -HLBx-1 <=30 (wherein x is an integer of 2 to n).