Patents by Inventor Naoki Shiraishi
Naoki Shiraishi 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: 20240117210Abstract: An ink set with which it is possible to effectively prevent bleeding of aqueous ink even in the case when printing takes place at high speed by means of an inkjet discharge recording method. This ink set includes a pretreatment ink and an aqueous ink and is used for a recording method in which the respective inks are discharged on a base material as an inkjet. The respective inks included in said ink set have static surface tensions that satisfy the following relation: static surface tension SP of the pretreatment ink<static surface tension SC of the aqueous ink.Type: ApplicationFiled: March 2, 2022Publication date: April 11, 2024Applicant: DNP FINE CHEMICALS CO., LTD.Inventors: Yuji MAKIMOTO, Syunya MOROZUMI, Naoki SHIRAISHI
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Publication number: 20240110532Abstract: Provided is an engine control device for controlling an opening degree of a valve adjusting a flow rate of an air-fuel mixture of an engine, wherein the opening degree is corrected based on an exhaust temperature deviation which is a deviation between a reference value and a current value of an exhaust temperature when controlling the opening degree.Type: ApplicationFiled: December 2, 2021Publication date: April 4, 2024Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.Inventors: Naoki HASHIMOTO, Ko TAKAYANAGI, Masataka SHIRAISHI, Yuta FURUKAWA, Yosuke KITAMURA, Yuki KOYAMA
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Publication number: 20240021825Abstract: A liquid composition for electrodes is capable of forming an isolation layer having an excellent adhesion to the electrode composite material layer when used as an electrode for an electrochemical device. A corresponding electrochemical device has excellent electrochemical device characteristics. The liquid composition for an electrode contains inorganic particles, a resin, and a dispersant. The resin is soluble in a non-polar solvent or in a mixed solvent containing a non-polar solvent, and the resin has an ethylene oxide chain in a main chain.Type: ApplicationFiled: November 24, 2021Publication date: January 18, 2024Applicant: Ricoh Company, Ltd.Inventors: Kohji Matsuoka, Hiromitsu Kawase, Yuu Zama, Ryuji Higashi, Okitoshi Kimura, Tomoya Ohmura, Takuya Saiga, Naoki Shiraishi, Toshiya Sagisaka, Daisuke Nose
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Publication number: 20230340287Abstract: A recording method for discharging, onto the surface of a substrate, an inkjet ink composition containing an organic solvent by using an inkjet head provided with constituent members bonded by a cured product of an adhesive, the organic solvent containing the following organic solvent (a). Organic solvent (a): at least one substance selected from the group consisting of alkylamide-based solvents (a1), cyclic amide-based solvents (a2), and lactone-based solvents (a3).Type: ApplicationFiled: September 30, 2021Publication date: October 26, 2023Applicant: DNP FINE CHEMICALS CO., LTD.Inventors: Keishiro YOSHIMORI, Yuka ORIKASA, Kisei MATSUMOTO, Koujun UTAKA, Mitsuyoshi TAMURA, Fumie YAMAZAKI, Naoki SHIRAISHI
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Publication number: 20230182097Abstract: A particle production apparatus includes a liquid droplet formation unit configured to discharge a liquid from a discharging hole to form a liquid droplet, and a particle formation unit configured to solidify the liquid droplet to form a particle. The particle formation unit includes a conveyance gas flow, and the liquid droplet formation unit is configured to discharge the liquid to satisfy Formula 1 below: P = Vj Pd ? 0 ? ? ? Vx 2 ? A ? cos 2 ( ? - 65 ) > 1 Formula ? 1 In the Formula 1, Vj represents a velocity (m/s) of the liquid droplet to be discharged, F represents a discharging drive frequency (kHz), d0 represents a diameter (?m) of the liquid droplet, ? represents a density (kg/m) of the liquid, Vx represents a velocity (m/s) of the conveyance gas flow, A represents shortest distance (m) from the liquid droplet formation unit to a center of the conveyance gas flow, and ? represents an angle (deg.) at which the liquid droplet is to be discharged.Type: ApplicationFiled: June 23, 2020Publication date: June 15, 2023Applicant: Ricoh Company, Ltd.Inventors: Naoki SHIRAISHI, Shinji Aoki
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Patent number: 11675184Abstract: A light deflector includes a movable unit having a reflective surface, an elastic member that supports the movable unit in a tiltable manner about a tilting axis, and a supporter that supports the elastic member. The elastic member has a first connection segment whose rigidity changes continuously, and is connected to the movable unit at the first connection segment. The rigidity changes continuously between the elastic member and the movable unit via the first connection segment. The elastic member includes a linear segment having a substantially fixed width, the elastic member has a second connection segment that is provided between the linear segment and the supporter and that connects the linear segment and the supporter, a width of the second connection segment gradually increases toward the supporter, and a maximum width of the first connection segment is greater than a maximum width of the second connection segment.Type: GrantFiled: August 27, 2020Date of Patent: June 13, 2023Assignee: OLYMPUS CORPORATIONInventor: Naoki Shiraishi
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Publication number: 20230172198Abstract: An anti-pathogen structure includes a resin structure having a plurality of openings in a surface of the resin structure, wherein the resin structure has an antimicrobial activity or an antiviral activity.Type: ApplicationFiled: February 10, 2021Publication date: June 8, 2023Applicant: Ricoh Company Ltd.Inventors: Ryo Kawamura, Satoshi Yamamoto, Keigo Takauji, Nana Akiba, Yuki Hoshikawa, Miku Ohkimoto, Yohei Shiren, Tatsuru Moritani, Naoki Shiraishi, Yuichi Sato
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Patent number: 11654116Abstract: A porous particle, wherein the porous particle has a mass median aerodynamic diameter and a volume average particle diameter that satisfy expression: y?2x, where x denotes the mass median aerodynamic diameter and y denotes the volume average particle diameter, and the porous particle has a relative span factor (R.S.F) that satisfies expression: 0<(R.S.F)?1.5.Type: GrantFiled: June 23, 2020Date of Patent: May 23, 2023Assignee: Ricoh Company, Ltd.Inventors: Naoki Shiraishi, Tatsuru Moritani, Yuichi Sato
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Patent number: 11448979Abstract: A discharge device is provided. The discharge device includes a liquid feed-discharger, and the liquid feed-discharger includes a feed unit configured to feed a liquid and a discharge unit having discharge holes configured to discharge the liquid fed by the feed unit. A ratio (X/Y) of a maximum cross-sectional area X (mm2) to a minimum cross-sectional area Y (mm2) of the liquid feed-discharger in a direction orthogonal to an axial direction of the liquid feed-discharger is from 1 to 5.Type: GrantFiled: March 22, 2019Date of Patent: September 20, 2022Assignee: RICOH COMPANY, LTD.Inventors: Tadahiko Morinaga, Tatsuru Moritani, Naoki Shiraishi, Shinji Aoki, Hisayoshi Ohshima, Yuichi Sato
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Publication number: 20220145103Abstract: Provided is an ink composition to be used on a leather substrate, wherein the ink composition is capable of forming an ink film having more abrasion resistance and flexibility and forming a clearer image. An ink composition to be used on a leather substrate that contains at least a coloring material, a resin, and an organic solvent, does not contain water, and the organic solvent contains a solvent represented by general formula (1). R1—(OR2)n—O—R3??(1) n: integer of from 1 to 4, R1: C1-8 optionally branched alkyl group, R2: C1-4 optionally branched alkylene group, R3: hydrogen or C1-4 optionally branched alkyl group.Type: ApplicationFiled: March 17, 2020Publication date: May 12, 2022Applicant: DNP Fine Chemicals Co., Ltd.Inventors: Fumie Yamazaki, Naoki Shiraishi, Kentaro Otomo, Yuuko Fujioka
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Patent number: 11319415Abstract: A method for manufacturing resin particles is provided. The method includes the steps of: dissolving a resin free of poly(lactic-co-glycolic acid) (PLGA) in a good solvent of the resin to prepare a resin solution; and discharging the resin solution from at least one discharge hole having an inner diameter of less than 1,000 ?m into a poor solvent of the resin to form resin particles.Type: GrantFiled: March 25, 2019Date of Patent: May 3, 2022Assignee: Ricoh Company, LTD.Inventors: Tatsuru Moritani, Naoki Shiraishi, Tadahiko Morinaga
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Patent number: 11285111Abstract: A particle-producing method is provided including the processes of: discharging a liquid from discharge holes provided on a liquid-storing unit storing the liquid to make the liquid into droplets, the liquid containing a physiologically active substance and a polymer; and solidifying the droplets into a particle.Type: GrantFiled: February 6, 2019Date of Patent: March 29, 2022Assignee: RICOH COMPANY, LTD.Inventors: Naoki Shiraishi, Tatsuru Moritani, Tadahiko Morinaga
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Patent number: 11104821Abstract: The purpose of the present invention is to provide a receptive solution which can suppress the occurrence of odor from the receptive solution itself when the receptive solution is applied on a recording medium, and can also prevent the appearance of a printed surface from being deteriorated. The receptive solution for ink-jet recording ink contains polyvalent metal cations, an aqueous solvent, a resin, and anions, wherein the resin is contained as a resin emulsion, and the anions contained in the receptive solution contain anions of an organic substance which has an OV/IV value of 0.3-1.0, the OV/IV value being a ratio of an organic value to an inorganic value.Type: GrantFiled: March 28, 2018Date of Patent: August 31, 2021Assignee: DNP Fine Chemicals Co., Ltd.Inventors: Kentaro Otomo, Fumie Yamazaki, Naoki Shiraishi, Kisei Matsumoto, Yoshiya Maegawa
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Publication number: 20210132352Abstract: An optical deflector includes: a movable unit including a mirror having an optical reflection surface and a first rib formed on a back surface of the optical reflection surface, and a mirror holder configured to hold the mirror unit and having a second rib arranged in a direction intersecting the first rib and joined to the first rib at an intersection with the first rib; a pair of elastic members provided on both sides of the movable unit and configured to support the movable unit so as to be swingable about a swing axis; and a pair of supports connected to the elastic members and configured to support the elastic members, wherein the first rib includes a pair of first protrusions, and the second rib includes a pair of second protrusions.Type: ApplicationFiled: December 11, 2020Publication date: May 6, 2021Applicant: OLYMPUS CORPORATIONInventor: Naoki SHIRAISHI
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Publication number: 20200405651Abstract: A porous particle, wherein the porous particle has a mass median aerodynamic diameter and a volume average particle diameter that satisfy expression: y?2x, where x denotes the mass median aerodynamic diameter and y denotes the volume average particle diameter, and the porous particle has a relative span factor (R.S.F) that satisfies expression: 0<(R.S.F)?1.5.Type: ApplicationFiled: June 23, 2020Publication date: December 31, 2020Inventors: Naoki Shiraishi, Tatsuru Moritani, Yuichi Sato
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Patent number: 10875340Abstract: This receiving solution for inkjet recording inks contains a resin emulsion as the resin; the polyvalent metal salt contains ions of a polyvalent metal and anions of an organic material; the (organic value)/(inorganic value) ratio, namely the OV/IV value of the anions of the organic material is 0.25 or more but less than 1.30; the HLB value of the surfactant is from 9 to 19 (inclusive); and the surfactant is represented by general formula (1). (In the formula, R1 represents an optionally branched alkylene group having 1 to 5 carbon atoms (inclusive); R2 represents a hydrogen atom or an optionally branched alkyl group having 1 to 3 carbon atoms (inclusive); R3 represents a hydrogen atom or an optionally branched alkyl group having 1 to 3 carbon atoms (inclusive); A represents 2 or 3; X represents ethylene oxide and/or propylene oxide; and n represents an integer).Type: GrantFiled: March 28, 2018Date of Patent: December 29, 2020Assignee: DNP Fine Chemicals Co., Ltd.Inventors: Yoshiya Maegawa, Fumie Yamazaki, Naoki Shiraishi, Kisei Matsumoto, Kentaro Otomo
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Publication number: 20200393669Abstract: A light deflector includes a movable unit having a reflective surface, an elastic member that supports the movable unit in a tiltable manner about a tilting axis, and a supporter that supports the elastic member. The elastic member has a first connection segment whose rigidity changes continuously, and is connected to the movable unit at the first connection segment. The rigidity changes continuously between the elastic member and the movable unit via the first connection segment. The elastic member includes a linear segment having a substantially fixed width, the elastic member has a second connection segment that is provided between the linear segment and the supporter and that connects the linear segment and the supporter, a width of the second connection segment gradually increases toward the supporter, and a maximum width of the first connection segment is greater than a maximum width of the second connection segment.Type: ApplicationFiled: August 27, 2020Publication date: December 17, 2020Applicant: OLYMPUS CORPORATIONInventor: Naoki SHIRAISHI
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Publication number: 20200070554Abstract: This receiving solution for inkjet recording inks contains a resin emulsion as the resin; the polyvalent metal salt contains ions of a polyvalent metal and anions of an organic material; the (organic value)/(inorganic value) ratio, namely the OV/IV value of the anions of the organic material is 0.25 or more but less than 1.30; the HLB value of the surfactant is from 9 to 19 (inclusive); and the surfactant is represented by general formula (1). (In the formula, R1 represents an optionally branched alkylene group having 1 to 5 carbon atoms (inclusive); R2 represents a hydrogen atom or an optionally branched alkyl group having 1 to 3 carbon atoms (inclusive); R3 represents a hydrogen atom or an optionally branched alkyl group having 1 to 3 carbon atoms (inclusive); A represents 2 or 3; X represents ethylene oxide and/or propylene oxide; and n represents an integer.Type: ApplicationFiled: March 28, 2018Publication date: March 5, 2020Inventors: Yoshiya Maegawa, Fumie Yamazaki, Naoki Shiraishi, Kisei Matsumoto, Kentaro Otomo
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Patent number: 10563081Abstract: A main object of the present invention is to provide an ink composition for ink-jet recording capable of forming an ink film excellent in both film strength and scratch resistance. The present invention achieves the object by providing an ink composition for ink-jet recording comprising: an aqueous solvent including water and water-soluble organic solvent; a coloring agent; a resin emulsion; and a surfactant; wherein the resin emulsion includes a silicon-acrylic resin emulsion and a resin emulsion other than the silicon-acrylic resin emulsion; a content ratio of the resin emulsion to the coloring agent (content of the resin emulsion/content of the coloring agent) is 1/5 or more and 15/1 or less; and a content ratio of the silicon-acrylic resin emulsion to the coloring agent (content of the silicon-acrylic resin emulsion/content of the coloring agent) is 1/20 or more and 5/1 or less.Type: GrantFiled: November 8, 2016Date of Patent: February 18, 2020Assignee: DNP Fine Chemicals Co., LTD.Inventors: Kisei Matsumoto, Naoki Shiraishi, Kentaro Otomo, Fumie Yamazaki, Yukio Sugita
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Publication number: 20200040207Abstract: The purpose of the present invention is to provide a receptive solution which can suppress the occurrence of odor from the receptive solution itself when the receptive solution is applied on a recording medium, and can also prevent the appearance of a printed surface from being deteriorated. The receptive solution for ink-jet recording ink contains polyvalent metal cations, an aqueous solvent, a resin, and anions, wherein the resin is contained as a resin emulsion, and the anions contained in the receptive solution contain anions of an organic substance which has an OV/IV value of 0.3-1.0, the OV/IV value being a ratio of an organic value to an inorganic value.Type: ApplicationFiled: March 28, 2018Publication date: February 6, 2020Inventors: Kentaro Otomo, Fumie Yamazaki, Naoki Shiraishi, Kisei Matsumoto, Yoshiya Maegawa