# US 10,119,042 B2 · Ink, inkjet printing apparatus, inkjet printing method, and printed matter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,042 B2 - Document ID: US10119042B2 - Status: Granted - Kind: B2 - Application number: 15/382,139 - Filed: 2016-12-16 - Published: 2017-06-22 - Granted: 2018-11-06 - Earliest claimed: 2015-12-18 - Assignees: Ricoh Company, Ltd. - Applicants: Masahiro Kido; Juichi Furukawa; Hidefumi Nagashima; Yuta Nakamura; Masaaki Tsuda; Hikaru Kobayashi; Yukihiro Imanaga; Michihiko Namba; Hiroaki Takahashi; Takahiro Yoshida - Inventors: Masahiro Kido; Juichi Furukawa; Hidefumi Nagashima; Yuta Nakamura; Masaaki Tsuda; Hikaru Kobayashi; Yukihiro Imanaga; Michihiko Namba; Hiroaki Takahashi; Takahiro Yoshida - Web page: https://patentgrep.com/patent/US10119042B2 ## CPC - C09D 11/102: containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds - C09D 11/322: Pigment inks - C09D 11/38: characterised by non-macromolecular additives other than solvents, pigments or dyes - 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) ## Abstract An ink including: water; at least one organic solvent; a polysiloxane surfactant; and acryl-silicone resin particles, where the polysiloxane surfactant has an HLB value of 8 or less. ## Claims ### Claim 1 An ink comprising: water; at least one organic solvent; a polysiloxane surfactant; and acryl-silicone resin particles, wherein the polysiloxane surfactant has an HLB value of 8 or less, and the acryl-silicone resin particles have a glass transition temperature of 0° C. or less. ### Claim 2 (depends on 1) The ink according to claim 1, further comprising at least one selected from the group consisting of polyurethane resin particles, fluororesin particles, vinyl chloride resin particles, polyester resin particles, acryl-styrene copolymer resin particles, and polyvinyl alcohol resin particles. ### Claim 3 (depends on 1) The ink according to claim 1, wherein the at least one organic solvent includes a compound represented by General Formula (1) below: where in the General Formula (1), R1, R2, and R3 each independently represent a hydrocarbon group including 1 or more but 8 or less carbon atoms and the hydrocarbon group may have an ether bond. ### Claim 4 (depends on 1) The ink according to claim 1, wherein the polysiloxane surfactant has an HLB value of 4.5 or more but 7.0 or less. ### Claim 5 (depends on 1) The ink according to claim 1, wherein an amount of the polysiloxane surfactant is 1.0% by mass or more but 2.0% by mass or less. ### Claim 6 (depends on 1) The ink according to claim 1, wherein a mass ratio (B/A) of an amount B (% by mass) of the acryl-silicone resin particles to an amount A (% by mass) of the polysiloxane surfactant is 0.8 or more but 1.5 or less. ### Claim 7 (depends on 1) The ink according to claim 1, wherein an amount of a silicone derived from the acryl-silicone resin particles is 0.01% by mass or more but 0.04% by mass or less relative to the total amount of the ink. ### Claim 8 (depends on 1) The ink according to claim 1, wherein a minimum film forming temperature of the acryl-silicone resin particles is 20° C. or less. ### Claim 9 An inkjet printing apparatus comprising: an ink accommodating section including an ink; and a discharging head configured to apply a stimulus to the ink to discharge the ink, wherein the ink includes: water; at least one organic solvent; a polysiloxane surfactant; and acryl-silicone resin particles, wherein the polysiloxane surfactant has an HLB value of 8 or less, and the acryl-silicone resin particles have a glass transition temperature of 0° C. or less. ### Claim 10 (depends on 9) The inkjet printing apparatus according to claim 9, wherein the discharging head includes: an individual liquid chamber; an inflow path configured to allow the ink to flow into the individual liquid chamber; and an outflow path configured to allow the ink to flow out from the individual liquid chamber. ### Claim 11 (depends on 10) The inkjet printing apparatus according to claim 10, further comprising a circulating unit configured to circulate the ink from the inflow path toward the outflow path. ### Claim 12 (depends on 9) The inkjet printing apparatus according to claim 9, wherein the ink further includes at least one selected from the group consisting of polyurethane resin particles, fluororesin particles, vinyl chloride resin particles, polyester resin particles, acryl-styrene copolymer resin particles, and polyvinyl alcohol resin particles. ### Claim 13 (depends on 1) An inkjet printing method comprising applying a stimulus to the ink according to claim 1 to discharge the ink to print an image on a print medium. ### Claim 14 (depends on 13) The inkjet printing method according to claim 13, further comprising allowing an ink discharging head to apply a thermal energy or a mechanical energy to the ink and to discharge the ink to print an image, wherein the ink discharging head includes an inflow path configured to allow the ink to flow into an individual liquid chamber and an outflow path configured to allow the ink to flow out from the individual liquid chamber. ### Claim 15 (depends on 14) The inkjet printing method according to claim 14, further comprising circulating the ink from the inflow path toward the outflow path while no printing is performed. ### Claim 16 (depends on 13) The inkjet printing method according to claim 13, further comprising heating the print medium. ### Claim 17 (depends on 16) The inkjet printing method according to claim 16, wherein a heating temperature in the heating is 40° C. or more but 100° C. or less. ### Claim 18 (depends on 13) The inkjet printing method according to claim 13, wherein the ink further includes at least one selected from the group consisting of polyurethane resin particles, fluororesin particles, vinyl chloride resin particles, polyester resin particles, acryl-styrene copolymer resin particles, and polyvinyl alcohol resin particles. ### Claim 19 A printed matter comprising: a print medium; and an image on the print medium, the image including a polysiloxane surfactant and an acryl-silicone resin, wherein the polysiloxane surfactant has an HLB value of 8 or less, and the acryl-silicone resin particles have a glass transition temperature of 0° C. or less.