Patents by Inventor Ryo Nagata
Ryo Nagata 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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COMPOUND, LIGHT-EMITTING MATERIAL, DELAYED FLUORESCENCE MATERIAL, AND ORGANIC LIGHT-EMITTING ELEMENT
Publication number: 20240002352Abstract: A high-efficiency near-infrared emitting organic EL device may be provided, using a compound represented by the following general formula. At least one of R1 to R4 is *-Ar-D, or R1 and R2, R2 and R3, or R3 and R4 bond to each other to form an aromatic ring having D. D represents a donor group, and Ar represents an arylene group.Type: ApplicationFiled: November 2, 2021Publication date: January 4, 2024Inventors: Umamahesh BALIJAPALLI, Ryo NAGATA, Youichi TSUCHIYA, Hajime NAKANOTANI, Chihaya ADACHI -
Patent number: 11333989Abstract: A toner containing a toner particle that contains a binder resin and a crystalline material, wherein, in measurement of powder dynamic viscoelasticity of the toner, when T(A)° C. is taken as an onset temperature for a storage elastic modulus E? obtained at a ramp rate of 20° C./min, EA?(100) Pa is taken as a storage elastic modulus at 100° C. obtained at a ramp rate of 20° C./min, and T(B)° C. is taken as an onset temperature for a storage elastic modulus E? obtained at a ramp rate of 5° C./min, T(A)?T(B) is 3.0° C. or less, T(A) is from 45.0° C. to 70.0° C., and EA?(100) is from 4.0×109 Pa to 6.5×109 Pa.Type: GrantFiled: June 23, 2020Date of Patent: May 17, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Tomohiro Unno, Kosuke Fukudome, Ryo Nagata, Tetsuya Kinumatsu, Mariko Yamashita
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Patent number: 11181846Abstract: A toner including a toner particle including a binder resin and a crystalline material, wherein in powder dynamic viscoelasticity measurement of the toner, where an onset temperature of a storage elastic modulus E? obtained when a temperature is raised at 20° C./min is denoted by T(A)° C., and an onset temperature of a storage elastic modulus E? obtained when a temperature is raised at 5° C./min is denoted by T(B)° C., T(A)?T(B) is 3.0° C. or less, in DSC of the toner, a peak temperature of a maximum endothermic peak is from 50.0° C. to 90.0° C., and an amount of a tetrahydrofuran-insoluble component in the binder resin is from 15% by mass to 60% by mass.Type: GrantFiled: June 23, 2020Date of Patent: November 23, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Tetsuya Kinumatsu, Tomohiro Unno, Mariko Yamashita, Ryo Nagata, Kosuke Fukudome
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Patent number: 11181840Abstract: A toner comprising a toner particle including a binder resin and a magnetic body, wherein in cross-sectional observation of the toner with a transmission electron microscope, where an area percentage occupied by the magnetic body in a region of 200 nm or less from a contour of a cross section of the toner particle to a centroid of the cross section is taken as A1, and an area percentage occupied by the magnetic body in a region of from 200 nm to 400 nm from the contour of the cross section of the toner particle to the centroid of the cross section is taken as A2, the area percentage A1 is from 38% to 85%, the area percentage A2 is from 0% to 37%, and a ratio A2/A1 of the area percentage A2 to the area percentage A1 is from 0 to 0.75.Type: GrantFiled: May 1, 2020Date of Patent: November 23, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Ryo Nagata, Kosuke Fukudome, Tetsuya Kinumatsu, Tomohiro Unno, Mariko Yamashita
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Patent number: 11181839Abstract: A toner comprising a toner particle including a binder resin, wherein the toner is such that (1) when a powder dynamic viscoelasticity measurement method is used, a measurement start temperature is set to 25° C., and a ramp rate is set to 20° C./min, on a curve of a storage elastic modulus E? (Pa) where a temperature (° C.) is plotted against an abscissa and the storage elastic modulus E? is plotted against an ordinate, a temperature at a time when the E? at a start of a measurement has decreased by 50% is from 60° C. to 90° C., and (2) a load at a yield point of a displacement-load curve which is determined by a nanoindentation method and where a load (mN) is plotted against an ordinate and a displacement amount (?m) is plotted against an abscissa, is 0.80 mN or more; and a method for producing thereof.Type: GrantFiled: May 1, 2020Date of Patent: November 23, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Mariko Yamashita, Tetsuya Kinumatsu, Tomohiro Unno, Ryo Nagata, Kosuke Fukudome
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Patent number: 11112708Abstract: A toner comprising a toner particle including a binder resin and a colorant and an external additive, wherein the external additive contains an external additive A having a Feret diameter of 60 to 200 nm, the external additive A is inorganic fine particles or organic-inorganic composite fine particles, adhesion index of the external additive A to the toner is 0.00 to 3.00, and penetration depth b and protrusion height c satisfy Relational expressions (1) and (2) below, where b (nm) denotes penetration depth of the external additive A, at a portion of the external additive A penetrating into the toner particle interior from the surface thereof, and c (nm) denotes a protrusion height of the external additive A at that portion, in an observation of an image resulting from image processing of a cross section of the toner using TEM; 60?b+c?200??(1), 0.15?b/(b+c)?0.30??(2).Type: GrantFiled: January 30, 2020Date of Patent: September 7, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Kozue Uratani, Daisuke Yoshiba, Shohei Tsuda, Tomoya Nagaoka, Mariko Yamashita, Kazuki Kaneko, Ryo Nagata
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Publication number: 20200409283Abstract: A toner including a toner particle including a binder resin and a crystalline material, wherein in powder dynamic viscoelasticity measurement of the toner, where an onset temperature of a storage elastic modulus E? obtained when a temperature is raised at 20° C./min is denoted by T(A)° C., and an onset temperature of a storage elastic modulus E? obtained when a temperature is raised at 5° C./min is denoted by T(B)° C., T(A)?T(B) is 3.0° C. or less, in DSC of the toner, a peak temperature of a maximum endothermic peak is from 50.0° C. to 90.0° C., and an amount of a tetrahydrofuran-insoluble component in the binder resin is from 15% by mass to 60% by mass.Type: ApplicationFiled: June 23, 2020Publication date: December 31, 2020Inventors: Tetsuya Kinumatsu, Tomohiro Unno, Mariko Yamashita, Ryo Nagata, Kosuke Fukudome
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Publication number: 20200409282Abstract: A toner containing a toner particle that contains a binder resin and a crystalline material, wherein, in measurement of powder dynamic viscoelasticity of the toner, when T(A)° C. is taken as an onset temperature for a storage elastic modulus E? obtained at a ramp rate of 20° C./min, EA?(100) Pa is taken as a storage elastic modulus at 100° C. obtained at a ramp rate of 20° C./min, and T(B)° C. is taken as an onset temperature for a storage elastic modulus E? obtained at a ramp rate of 5° C./min, T(A)?T(B) is 3.0° C. or less, T(A) is from 45.0° C. to 70.0° C., and EA?(100) is from 4.0×109 Pa to 6.5×109 Pa.Type: ApplicationFiled: June 23, 2020Publication date: December 31, 2020Inventors: Tomohiro Unno, Kosuke Fukudome, Ryo Nagata, Tetsuya Kinumatsu, Mariko Yamashita
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Publication number: 20200363744Abstract: A toner comprising a toner particle including a binder resin, wherein the toner is such that (1) when a powder dynamic viscoelasticity measurement method is used, a measurement start temperature is set to 25° C., and a ramp rate is set to 20° C./min, on a curve of a storage elastic modulus E? (Pa) where a temperature (° C.) is plotted against an abscissa and the storage elastic modulus E? is plotted against an ordinate, a temperature at a time when the E? at a start of a measurement has decreased by 50% is from 60° C. to 90° C., and (2) a load at a yield point of a displacement-load curve which is determined by a nanoindentation method and where a load (mN) is plotted against an ordinate and a displacement amount (?m) is plotted against an abscissa, is 0.80 mN or more; and a method for producing thereof.Type: ApplicationFiled: May 1, 2020Publication date: November 19, 2020Inventors: Mariko Yamashita, Tetsuya Kinumatsu, Tomohiro Unno, Ryo Nagata, Kosuke Fukudome
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Publication number: 20200363745Abstract: A toner comprising a toner particle including a binder resin and a magnetic body, wherein in cross-sectional observation of the toner with a transmission electron microscope, where an area percentage occupied by the magnetic body in a region of 200 nm or less from a contour of a cross section of the toner particle to a centroid of the cross section is taken as A1, and an area percentage occupied by the magnetic body in a region of from 200 nm to 400 nm from the contour of the cross section of the toner particle to the centroid of the cross section is taken as A2, the area percentage A1 is from 38% to 85%, the area percentage A2 is from 0% to 37%, and a ratio A2/A1 of the area percentage A2 to the area percentage A1 is from 0 to 0.75.Type: ApplicationFiled: May 1, 2020Publication date: November 19, 2020Inventors: Ryo Nagata, Kosuke Fukudome, Tetsuya Kinumatsu, Tomohiro Unno, Mariko Yamashita
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Patent number: 10782623Abstract: A toner comprising: a toner particle that contains a binder resin and a colorant: and an external additive, wherein (1) the average circularity of the toner is at least 0.960; (2) the fixing ratio of the external additive on the toner particle is from 75% to 100%; and (3) in a differential curve obtained by the differentiation, by load, of a load-displacement curve where the horizontal axis is load (mN) and the vertical axis is displacement (?m), the load-displacement curve being provided by measurement of the strength of the toner by a nanoindentation procedure, a load A that provides a maximum value in the differential curve in a load region from 0.20 mN to 2.30 mN is from 1.15 mN to 1.50 mN.Type: GrantFiled: July 27, 2018Date of Patent: September 22, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Daisuke Yoshiba, Shohei Tsuda, Mariko Yamashita, Kozue Uratani, Ryo Nagata
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Patent number: 10747135Abstract: A toner including a toner particle; and an external additive, wherein the external additive contains strontium titanate particle, and when in a projected image of the strontium titanate particle photographed using a scanning electron microscope, a standard deviation of a distance from a center of the projected image to an outline of the projected image is Ds, and a circle-equivalent diameter of the projected image is Da, a value CV calculated by Equation (1) is 0.07 or less, CV=Ds/(Da/2)??(1).Type: GrantFiled: February 26, 2019Date of Patent: August 18, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Yojiro Hotta, Koji Nishikawa, Kazuo Terauchi, Takaaki Furui, Ryo Nagata, Keisuke Tanaka, Masami Fujimoto
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Publication number: 20200166861Abstract: A toner comprising a toner particle including a binder resin and a colorant and an external additive, wherein the external additive contains an external additive A having a Feret diameter of 60 to 200 nm, the external additive A is inorganic fine particles or organic-inorganic composite fine particles, adhesion index of the external additive A to the toner is 0.00 to 3.00, and penetration depth b and protrusion height c satisfy Relational expressions (1) and (2) below, where b (nm) denotes penetration depth of the external additive A, at a portion of the external additive A penetrating into the toner particle interior from the surface thereof, and c (nm) denotes a protrusion height of the external additive A at that portion, in an observation of an image resulting from image processing of a cross section of the toner using TEM; 60?b+c?200??(1), 0.15?b/(b+c)?0.30??(2).Type: ApplicationFiled: January 30, 2020Publication date: May 28, 2020Inventors: Kozue Uratani, Daisuke Yoshiba, Shohei Tsuda, Tomoya Nagaoka, Mariko Yamashita, Kazuki Kaneko, Ryo Nagata
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Patent number: 10520936Abstract: An automated system including a control target device and a control device which controls the control target device, in which it is possible to accurately estimate whether maintenance of the control target device is required and a portion requiring maintenance. The control device is an adaptive control device including a position control system, an adaptive identifier which estimates a parameter indicating a state of a control target device based on a control command and a control target output from the control target device, and an adaptive compensator which, based on the parameter which is estimated by the adaptive identifier, compensates the control command from the position control system to the control target device such that the control target device performs a planned operation regardless of a change in the parameter.Type: GrantFiled: July 5, 2013Date of Patent: December 31, 2019Assignee: FUJI CORPORATIONInventors: Makoto Kainuma, Masatoshi Fujita, Ryo Nagata, Takashi Kido
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Patent number: 10524401Abstract: A component mounting machine moves a mounting head from a supply position P1 to each of mounting positions P3 and P4 of a circuit board CB via an imaging position P2. Further, the component mounting machine performs control such that the mounting head moves in a direction of movement at the time of imaging that is either of an X-axis direction or a Y-axis direction when passing through the imaging position P2. The component mounting machine determines the direction of movement at the time of imaging, according to a first X-axis distance Lx and a first Y-axis distance Ly from the imaging position P2 to each of the mounting positions P3 and P4.Type: GrantFiled: March 27, 2014Date of Patent: December 31, 2019Assignee: FUJI CORPORATIONInventors: Jun Iisaka, Hidetoshi Ito, Hidetoshi Kawai, Shigeto Oyama, Naohiro Kato, Kuniyasu Nakane, Ryo Nagata, Keisuke Nagiri
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Patent number: 10488777Abstract: A toner contains toner particles, titanate fine particles having a Group II element, and hydrotalcite compound fine particles as an external additive and satisfying 10?Lt?80 and 100?Lh?Weight average particle diameter (D4) of toner particles×0.50, when the number average particle diameter (D1) of primary particles of the titanate fine particles is defined as Lt (nm) and the number average particle diameter (D1) of primary particles of the hydrotalcite compound fine particles is defined as Lh (nm).Type: GrantFiled: August 23, 2018Date of Patent: November 26, 2019Assignee: Canon Kabushiki KaishaInventors: Kazuo Terauchi, Yojiro Hotta, Koji Nishikawa, Masami Fujimoto, Takaaki Furui, Ryo Nagata, Keisuke Tanaka
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Patent number: 10456911Abstract: After a component picked up by a suction nozzle is moved in an XY direction towards target XY coordinates, a waveform of a vibration (vibration waveform) in the Y direction arising in the component after the component has arrived near the target XY coordinates is measured, and control is performed such that the component arrives at a target Z coordinate (value zero) when a displacement y of the component crosses a node of the measured vibration waveform.Type: GrantFiled: October 10, 2014Date of Patent: October 29, 2019Assignee: FUJI CORPORATIONInventors: Ryo Nagata, Masatoshi Fujita
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Patent number: 10454345Abstract: A linear motor device comprising: a path member including a magnet extending in a movement direction; and a moving body including a coil that is movably mounted on the path member; the linear motor device generates thrust in the movement direction between the magnet and the coil by current being passed through the coil; the moving body further includes a magnetic shielding target object, and a magnetic shielding member formed from strongly magnetic material that shields the magnetic shielding target. The magnetic shielding member includes a parallel shielding plate provided parallel to the movement direction between the magnetic shielding target object and the magnet, and a perpendicular shielding plate provided extending away from the magnet in a direction perpendicular to the movement direction at at least one of a front edge and a rear edge of the parallel shielding plate in the movement direction.Type: GrantFiled: December 20, 2013Date of Patent: October 22, 2019Assignee: FUJI CORPORATIONInventors: Ryo Nagata, Takashi Kido, Yoshihiro Shirakawa, Masaki Kurono
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Publication number: 20190271928Abstract: A toner including a toner particle; and an external additive, wherein the external additive contains strontium titanate particle, and when in a projected image of the strontium titanate particle photographed using a scanning electron microscope, a standard deviation of a distance from a center of the projected image to an outline of the projected image is Ds, and a circle-equivalent diameter of the projected image is Da, a value CV calculated by Equation (1) is 0.07 or less, CV=Ds/(Da/2)??(1).Type: ApplicationFiled: February 26, 2019Publication date: September 5, 2019Inventors: Yojiro Hotta, Koji Nishikawa, Kazuo Terauchi, Takaaki Furui, Ryo Nagata, Keisuke Tanaka, Masami Fujimoto
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Patent number: 10303075Abstract: A toner including a toner particle and an external additive, wherein the external additive contains an inorganic fine particle A and a silica fine particle; in a surface of the toner observed using a scanning electron microscope, a number-average particle diameter of primary particle of the silica fine particle is from 5 nm to 50 nm, a number-average particle diameter of primary particle of the inorganic fine particle A is at least 10 nm and less than 60 nm, a coverage ratio X1 of the toner surface covered by the silica fine particle is from 60 area % to 95 area %, the inorganic fine particle A is a fine particle of a titanate having a Group 2 element, and a coverage ratio X2 of the toner surface covered by the inorganic fine particle A is from 5 area % to 40 area %.Type: GrantFiled: February 23, 2018Date of Patent: May 28, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Keisuke Tanaka, Yojiro Hotta, Kazuo Terauchi, Koji Nishikawa, Takaaki Furui, Ryo Nagata, Kazuyuki Sato, Yu Yoshida, Yusuke Kosaki, Masami Fujimoto