Patents by Inventor Noriaki Ozawa
Noriaki Ozawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240026174Abstract: An inkjet ink contains a quinacridone pigment, a resin, and an aqueous medium. A ratio of a mass of the resin to a mass of the quinacridone pigment is no greater than 0.50. The resin has an acid value of at least 60 mgKOH/g and no greater than 120 mgKOH/g. A supernatant has a phosphorus concentration of no greater than 2.0 ppm. The supernatant is obtained by centrifugation of the inkjet ink at 1,050,000 G for 3 hours.Type: ApplicationFiled: July 13, 2023Publication date: January 25, 2024Applicant: KYOCERA Document Solutions Inc.Inventor: Noriaki OZAWA
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Patent number: 11873410Abstract: An ink set includes an inkjet ink and a recording head filling liquid. The inkjet ink contains a pigment, water, and 1,2-alkanediol with a carbon number of at least 7 or 8. The recording head filling liquid contains a specific surfactant, water, and a specific alcohol compound with a carbon number of at least 10 and no greater than 12. The specific surfactant has an HLB value of no greater than 5.0. An amount of content of the specific alcohol compound in the recording head filling liquid is at least 0.1 ppm and no greater than 1.0 ppm.Type: GrantFiled: April 25, 2022Date of Patent: January 16, 2024Assignee: KYOCERA Document Solutions Inc.Inventor: Noriaki Ozawa
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Patent number: 11859095Abstract: An ink set includes an inkjet ink and a recording head filling liquid. The inkjet ink includes a pigment, a pigment coating resin, a first alkali metal ion, and water. The recording head filling liquid includes polyethylene glycol, a second alkali metal ion, a surfactant, and water. The polyethylene glycol has a mass average molecular weight of at least 180 and no greater than 800. A content ratio of the surfactant in the recording head filling liquid is greater than 0.00% by mass and no greater than 0.10% by mass. The first and second alkali metal ions each contain at least one of Li+, Na+, and K+.Type: GrantFiled: December 16, 2021Date of Patent: January 2, 2024Assignee: KYOCERA Document Solutions Inc.Inventors: Noriaki Ozawa, Yasuko Takaori, Toyotsune Inoue
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Patent number: 11827798Abstract: An ink-jet ink includes pigment particles; a binder resin; and a penetrant. The binder resin includes a self-emulsification specific resin. The specific resin includes a first repeating unit derived from specific alkyl ester (meth)acrylate including a straight-chain alkyl group having 9 or more and 15 or less carbon atoms. In the specific resin, a content ratio of the first repeating unit is 6.0% by mass or more and 20.0% by mass or less. The penetrant includes specific alkanediol having 6 or more and 8 or less carbon atoms.Type: GrantFiled: January 20, 2021Date of Patent: November 28, 2023Assignee: KYOCERA DOCUMENT SOLUTIONS INC.Inventor: Noriaki Ozawa
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Patent number: 11661525Abstract: An inkjet ink contains a pigment, a pigment dispersion resin, a water-soluble organic solvent, and a polymer nonionic surfactant. The pigment dispersion resin has an acid value of at least 55 mgKOH/g and no greater than 97 mgKOH/g. The polymer nonionic surfactant has a mass average molecular weight of at least 7,000 and no greater than 12,500. An inkjet recording apparatus includes a linehead and a conveyance section which conveys a recording medium. The linehead ejects the above inkjet ink onto the recording medium.Type: GrantFiled: June 18, 2021Date of Patent: May 30, 2023Assignee: KYOCERA Document Solutions Inc.Inventor: Noriaki Ozawa
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Patent number: 11491783Abstract: An inkjet recording apparatus includes memory, a processor, an image forming section, and a bending mechanism. The memory stores therein bending information in which a plurality of bending amounts corresponding to respective ejection amounts of an ink ejected from the image forming section are defined. The processor sets a bending amount of a sheet to be conveyed. The bending mechanism includes a roller and a belt that hold the sheet therebetween, and bends the sheet by moving a position of a center of the roller toward the belt based on the set bending amount. The processor calculates for each of areas of the sheet an amount of the ink ejected to the area, and sets the bending amount of the sheet based on the bending amounts corresponding to the calculated amounts of the ink ejected to the respective areas in the bending information.Type: GrantFiled: February 22, 2021Date of Patent: November 8, 2022Assignee: KYOCERA Document Solutions Inc.Inventors: Takeshi Watanabe, Hiroyuki Ueda, Hiroatsu Tamai, Takatoshi Nishimura, Noriaki Ozawa, Toyotsune Inoue, Susumu Hiroshima
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Publication number: 20220348778Abstract: An ink set includes an inkjet ink and a recording head filling liquid. The inkjet ink contains a pigment, water, and 1,2-alkanediol with a carbon number of at least 7 or 8. The recording head filling liquid contains a specific surfactant, water, and a specific alcohol compound with a carbon number of at least 10 and no greater than 12. The specific surfactant has an HLB value of no greater than 5.0. An amount of content of the specific alcohol compound in the recording head filling liquid is at least 0.1 ppm and no greater than 1.0 ppm.Type: ApplicationFiled: April 25, 2022Publication date: November 3, 2022Applicant: KYOCERA Document Solutions Inc.Inventor: Noriaki OZAWA
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Patent number: 11479741Abstract: A wash fluid for use in an inkjet recording apparatus contains water, a coconut oil fatty acid surfactant, an organic deliquescent agent, a polyhydric alcohol, and a basic inorganic compound. The polyhydric alcohol is an alkanediol. The coconut oil fatty acid surfactant is contained in an amount of at least 0.01% by mass and no greater than 3.00% by mass. The organic deliquescent agent is contained in an amount of at least 0.10% by mass and no greater than 30.00% by mass.Type: GrantFiled: November 18, 2019Date of Patent: October 25, 2022Assignee: KYOCERA Document Solutions Inc.Inventors: Yasuko Takaori, Noriaki Ozawa
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Publication number: 20220228014Abstract: An ink set includes an inkjet ink and a recording head filling liquid. The inkjet ink contains a pigment, a pigment covering resin, and water. The recording head filling liquid contains polyethylene glycol, a nonionic surfactant, and water. The recording head filling liquid has a viscosity of at least 3 mPa·s and no greater than 10 mPa·s. The polyethylene glycol has a mass average molecular weight of at least 170 and no greater than 300. A percentage content of the polyethylene glycol in the recording head filling liquid is at least 7.0% by mass and no greater than 55.0% by mass. The pigment covering resin includes a styrene-acrylic resin.Type: ApplicationFiled: January 11, 2022Publication date: July 21, 2022Applicant: KYOCERA Document Solutions Inc.Inventors: Yasuko TAKAORI, Noriaki OZAWA, Toyotsune INOUE
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Publication number: 20220195230Abstract: An ink set includes an inkjet ink and a recording head filling liquid. The inkjet ink includes a pigment, a pigment coating resin, a first alkali metal ion, and water. The recording head filling liquid includes polyethylene glycol, a second alkali metal ion, a surfactant, and water. The polyethylene glycol has a mass average molecular weight of at least 180 and no greater than 800. A content ratio of the surfactant in the recording head filling liquid is greater than 0.00% by mass and no greater than 0.10% by mass. The first and second alkali metal ions each contain at least one of Li+, Na+, and K+.Type: ApplicationFiled: December 16, 2021Publication date: June 23, 2022Applicant: KYOCERA Document Solutions Inc.Inventors: Noriaki OZAWA, Yasuko TAKAORI, Toyotsune INOUE
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Patent number: 11294333Abstract: A rotary bezel equipped timepiece includes a glass frame that holds a windshield member, a rotary bezel so provided as to be rotatable relative to the glass frame, a resin member attached to the outer circumferential surface of the glass frame, and a gasket disposed between the resin member and the inner circumferential surface of the rotary bezel.Type: GrantFiled: December 10, 2018Date of Patent: April 5, 2022Assignee: SEIKO EPSON CORPORATIONInventor: Noriaki Ozawa
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Publication number: 20210403741Abstract: An inkjet ink contains a pigment, a pigment dispersion resin, a water-soluble organic solvent, and a polymer nonionic surfactant. The pigment dispersion resin has an acid value of at least 55 mgKOH/g and no greater than 97 mgKOH/g. The polymer nonionic surfactant has a mass average molecular weight of at least 7,000 and no greater than 12,500. An inkjet recording apparatus includes a linehead and a conveyance section which conveys a recording medium. The linehead ejects the above inkjet ink onto the recording medium.Type: ApplicationFiled: June 18, 2021Publication date: December 30, 2021Applicant: KYOCERA Document Solutions Inc.Inventor: Noriaki OZAWA
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Publication number: 20210363368Abstract: An inkjet ink includes at least pigment particles, a resin, and water. Dispersed particles in the inkjet ink including the pigment particles have an average particle diameter of at least 90 nm and no greater than 100 nm. The resin has a mass ratio to the pigment particles of at least 0.05 and no greater than 0.10. The resin includes at least a repeating unit represented by formula (1) and a repeating unit represented by formula (2). A molar ratio of the repeating unit represented by the formula (2) to the repeating unit represented by the formula (1) is at least 0.35 and no greater than 0.80.Type: ApplicationFiled: May 18, 2021Publication date: November 25, 2021Applicant: KYOCERA Document Solutions Inc.Inventor: Noriaki OZAWA
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Patent number: 11072187Abstract: An inkjet recording apparatus includes three or more recording heads. The recording heads contain different inks and eject the different inks sequentially on a recording medium. The different inks each contain a pigment and a polyhydric alcohol monobutyl ether. Of the different inks, an ink to be ejected first has the lowest pigment content ratio. Of the different inks, an ink to be ejected third and an ink to be subsequently ejected each have a pigment content ratio equal to or higher than that of a corresponding one of inks to be precedently ejected. Of the different inks, an ink to be ejected second and an ink to be subsequently ejected each have a polyhydric alcohol monobutyl ether content ratio higher than that of a corresponding one of inks to be precedently ejected.Type: GrantFiled: October 1, 2019Date of Patent: July 27, 2021Assignee: KYOCERA Document Solutions Inc.Inventors: Noriaki Ozawa, Hiroatsu Tamai, Takeshi Watanabe, Yasuhiro Michishita, Hiroyuki Ueda, Toyotsune Inoue, Yusuke Takano, Naoto Miyakoshi
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Publication number: 20210222021Abstract: An ink-jet ink includes pigment particles; a binder resin; and a penetrant. The binder resin includes a self-emulsification specific resin. The specific resin includes a first repeating unit derived from specific alkyl ester (meth)acrylate including a straight-chain alkyl group having 9 or more and 15 or less carbon atoms. In the specific resin, a content ratio of the first repeating unit is 6.0% by mass or more and 20.0% by mass or less. The penetrant includes specific alkanediol having 6 or more and 8 or less carbon atoms.Type: ApplicationFiled: January 20, 2021Publication date: July 22, 2021Inventor: Noriaki OZAWA
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Patent number: 11061354Abstract: An inkjet recording apparatus includes an image forming section, a heater, a first calculation section, storage, and a second calculation section. The image forming section ejects ink onto a sheet in which first to M-th regions are defined (M is an integer of at least 2). The heater heats an n-th region of the sheet using an n-th heat source (n is an integer of at least 1 and no greater than M). The storage stores therein temperature information indicating a first heating temperature for the n-th region. The second calculation section calculates a second heating temperature for the n-th region based on the temperature information and the ink ejection amount to the n-th region calculated by the first calculation section.Type: GrantFiled: January 9, 2020Date of Patent: July 13, 2021Assignee: KYOCERA Document Solutions Inc.Inventors: Takeshi Watanabe, Hiroyuki Ueda, Hiroatsu Tamai, Takatoshi Nishimura, Noriaki Ozawa, Toyotsune Inoue, Susumu Hiroshima
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Publication number: 20210170745Abstract: An inkjet recording apparatus includes memory, a processor, an image forming section, and a bending mechanism. The memory stores therein bending information in which a plurality of bending amounts corresponding to respective ejection amounts of an ink ejected from the image forming section are defined. The processor sets a bending amount of a sheet to be conveyed. The bending mechanism includes a roller and a belt that hold the sheet therebetween, and bends the sheet by moving a position of a center of the roller toward the belt based on the set bending amount. The processor calculates for each of areas of the sheet an amount of the ink ejected to the area, and sets the bending amount of the sheet based on the bending amounts corresponding to the calculated amounts of the ink ejected to the respective areas in the bending information.Type: ApplicationFiled: February 22, 2021Publication date: June 10, 2021Applicant: KYOCERA Document Solutions Inc.Inventors: Takeshi WATANABE, Hiroyuki UEDA, Hiroatsu TAMAI, Takatoshi NISHIMURA, Noriaki OZAWA, Toyotsune INOUE, Susumu HIROSHIMA
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Patent number: 10987949Abstract: A de-curling device de-curls a sheet and includes an endless belt, a de-curling roller, a nip width adjusting mechanism, and a belt tension adjusting mechanism. The endless belt is looped around a pair of supporting rollers. The de-curling roller is provided between the pair of supporting rollers and has a first outer circumferential surface pressed against a second outer circumferential surface of the endless belt to form a nip portion at which the endless belt curves along the first outer circumferential surface, the de-curling roller being configured to de-curl the sheet passing through the nip portion. The nip width adjusting mechanism adjusts the nip width by moving the de-curling roller in a direction intersecting the second outer circumferential surface of the endless belt. The belt tension adjusting mechanism adjusts the tension of the endless belt according to the nip width adjusted by the nip width adjusting mechanism.Type: GrantFiled: September 10, 2018Date of Patent: April 27, 2021Inventors: Takatoshi Nishimura, Hiroatsu Tamai, Hiroyuki Ueda, Takeshi Watanabe, Susumu Hiroshima, Noriaki Ozawa, Toyotsune Inoue
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Patent number: 10960664Abstract: An inkjet recording apparatus (1) includes an image forming section (40), a decurler (20), a changing section (50), a first calculating section (72), storage (60), a second calculating section (73), and a controller (75). The image forming section (40) ejects ink onto a sheet (S). The decurler (20) bends the sheet (S). The changing section (50) changes a bending amount of the sheet (S). The first calculating section (72) calculates an ink ejection rate (?) to the sheet (S) for each of areas of the sheet (S). The storage (60) stores therein first bending information (62) indicating a first target bending amount (?) of a specific area of the sheet (S) corresponding to the ink ejection rate (?) to the specific area. The second calculating section (73) calculates a second target bending amount of each of the areas. The controller (75) controls the changing section (50) based on the second target bending amounts.Type: GrantFiled: May 16, 2018Date of Patent: March 30, 2021Assignee: KYOCERA Document Solutions Inc.Inventors: Takeshi Watanabe, Hiroyuki Ueda, Hiroatsu Tamai, Takatoshi Nishimura, Noriaki Ozawa, Toyotsune Inoue, Susumu Hiroshima
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Patent number: 10960685Abstract: A controller checks ink quantity to be ejected to a specific area on a first side (specific area ink quantity) and determines an ink quantity ratio. The specific area is a strip-shaped area including a side edge on upstream side in a conveying direction of a paper sheet on the first side. When the ink quantity ratio is larger than a reference ink quantity ratio, the controller performs a black conversion process on pixels in a conversion target range. The conversion target range is a range corresponding to the specific area in the image data of the first side. The black conversion process is a process of converting a pixel to which three color inks, i.e. cyan, magenta, and yellow inks are to be ejected into a pixel to which only black ink is to be ejected.Type: GrantFiled: October 30, 2019Date of Patent: March 30, 2021Assignee: KYOCERA Document Solutions Inc.Inventors: Toyotsune Inoue, Hiroatsu Tamai, Takeshi Watanabe, Hiroyuki Ueda, Yasuhiro Michishita, Naoto Miyakoshi, Yusuke Takano, Noriaki Ozawa