# US 2011/0236649 A1 · Ink composition, ink jet recording method, and recorded matter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2011/0236649 A1 - Document ID: US20110236649A1 - Status: Published application - Kind: A1 - Application number: 13/071,617 - Filed: 2011-03-25 - Published: 2011-09-29 - Earliest claimed: 2010-03-26 - Assignees: Seiko Epson Corporation - Inventors: Ayako NISHIKI; Chei Maruyama; Miharu Kanaya; Soichi Yamazaki - Web page: https://patentgrep.com/patent/US20110236649A1 ## CPC - C09D 11/38: characterised by non-macromolecular additives other than solvents, pigments or dyes - C09D 11/322: Pigment inks - Y10T 428/24802: Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An ink composition includes at least a pigment, a polyhydric alcohol monoalkyl ether having a vapor pressure of 0.1 mmHg or less at 20° C. and/or a nitrogen-containing cyclic compound, a polyhydric alcohol, an unsaturated fatty acid, an alkyl alcohol having 1 to 4 carbon atoms, a surfactant, and 10% to 60% by mass of water. An in jet recording method uses the ink composition, and a recorded matter is produced by the ink jet recording method. ## Claims ### Claim 1 An ink composition comprising at least a pigment, a polyhydric alcohol monoalkyl ether having a vapor pressure of 0.1 mmHg or less at 20° C. and/or a nitrogen-containing cyclic compound, a polyhydric alcohol, an unsaturated fatty acid, an alkyl alcohol having 1 to 4 carbon atoms, a surfactant, and 10% to 60% by mass of water. ### Claim 2 (depends on 1) The ink composition according to claim 1, wherein the content of the unsaturated fatty acid is 0.08% to 3% by mass. ### Claim 3 (depends on 1) The ink composition according to claim 1, wherein the unsaturated fatty acid is oleic acid. ### Claim 4 (depends on 1) The ink composition according to claim 1, wherein the content of the pigment is 6% by mass or more. ### Claim 5 (depends on 1) The ink composition according to claim 1, wherein the pigment is a pigment coated with a water-insoluble polymer. ### Claim 6 (depends on 1) The ink composition according to claim 1, wherein the pigment is a self-dispersible pigment. ### Claim 7 (depends on 1) The ink composition according to claim 1, wherein the surfactant is an acethylene glycol surfactant and/or a poly-modified siloxane surfactant. ### Claim 8 (depends on 1) The ink composition according to claim 1, further comprising a resin emulsion. ### Claim 9 (depends on 8) The ink composition according to claim 8, wherein the resin emulsion is a mixture of resin fine particles having a minimum film-forming temperature of 20° C. or more and resin fine particles having a minimum film-forming temperature of less than 20° C. ### Claim 10 (depends on 1) An ink jet recording method comprising printing by ejecting droplets of an ink composition and adhering the droplets to a recording medium, wherein the ink composition according to claim 1 is used. ### Claim 11 (depends on 2) An ink jet recording method comprising printing by ejecting droplets of an ink composition and adhering the droplets to a recording medium, wherein the ink composition according to claim 2 is used. ### Claim 12 (depends on 3) An ink jet recording method comprising printing by ejecting droplets of an ink composition and adhering the droplets to a recording medium, wherein the ink composition according to claim 3 is used. ### Claim 13 (depends on 4) An ink jet recording method comprising printing by ejecting droplets of an ink composition and adhering the droplets to a recording medium, wherein the ink composition according to claim 4 is used. ### Claim 14 (depends on 5) An ink jet recording method comprising printing by ejecting droplets of an ink composition and adhering the droplets to a recording medium, wherein the ink composition according to claim 5 is used. ### Claim 15 (depends on 6) An ink jet recording method comprising printing by ejecting droplets of an ink composition and adhering the droplets to a recording medium, wherein the ink composition according to claim 6 is used. ### Claim 16 (depends on 7) An ink jet recording method comprising printing by ejecting droplets of an ink composition and adhering the droplets to a recording medium, wherein the ink composition according to claim 7 is used. ### Claim 17 (depends on 8) An ink jet recording method comprising printing by ejecting droplets of an ink composition and adhering the droplets to a recording medium, wherein the ink composition according to claim 8 is used. ### Claim 18 (depends on 9) An ink jet recording method comprising printing by ejecting droplets of an ink composition and adhering the droplets to a recording medium, wherein the ink composition according to claim 9 is used. ### Claim 19 (depends on 10) A recorded matter recorded by the ink jet recording method according to claim 10.