INK COMPOSITION, INK SET USING SAME, RECORDING METHOD, INK HEAD AND RECORDED IMAGE

• Main Authors: KINOMOTO, MASANORI, FUJII, ICHIRO, NAKAYA, HIROAKI, KAMOTO, TAKANORI, SUZUKI, SEITA, NAKATSU, HIROMI
• Format: Patent
• Language: English; French; Japanese
• Published: 19.08.2004
• Edition: 7
• 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

An ink composition having an excellent permeability as an inkjet ink and enabling a high-quality print in high-speed printing is disclosed. The ink composition is composed of (a) an aqueous medium having a conductivity of 250 muS/cm (at 25 C) or less, (b) a pigment, and (c) a compound represented by the following formula (I): (wherein m and n are respectively an integer of 0-11; m+n is an integer of 9-11; x is an integer of 5-9; and y is a number between 2.5 and 5). L'invention concerne une composition d'encre présentant une excellente perméabilité comme encre à jet d'encre, et permettant d'obtenir une impression de haute qualité à vitesse élevée. Cette composition d'encre est composée (a) d'un milieu aqueux avec une conductivité de 250 mu s/cm (à 25 DEG C) ou moins, (b) un pigment, et (c) un composé représenté par la formule suivante (I) (dans laquelle m et n sont, respectivement, un entier de 0 à 11, m+n est un entier de 9 à 11, x est un entier de 5 à 9, et y est un nombre entre 2,5 et 5).