INK FOR INKJET RECORDING APPARATUS, AND METHOD OF FORMING IMAGE

• Main Authors: TAKAORI YASUKO, SOMETE TAKASHI, HIROSHIMA SUSUMU, FURUKAWA TOKUAKI
• Format: Patent
• Language: English
• Published: 09.09.2013
• 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 an inkjet recording apparatus capable of suppressing defective discharge of the ink when an image is formed after the ink is not discharged from a recording head for a while, and capable of obtaining the image having desired image quality, and a method of forming the image by the inkjet recording apparatus.SOLUTION: An ink for an inkjet recording apparatus includes water, a pigment dispersion, a superpenetrant having a predetermined solubility parameter (SP value), and a high SP value organic solvent, and the SP value difference ( SP) of adjacent organic solvents adjoining each other when the high SP value organic solvents are arranged in order of the SP value is all 0.5-5.0, and the difference (SP-SP) between an SP value (SP) of the high SP value organic solvent having the highest SP value and an SP value (SP) of the superpenetrant having the lowest SP value is SP-SP≤12.