Patents by Inventor Atsushi Tani
Atsushi Tani 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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Patent number: 8980521Abstract: The present invention provides a toner excellent in low-temperature fixability and also excellent in heat-resistant storage property, offset resistance, and durability. In a process for producing a toner containing toner particles by emulsion aggregation, each toner particle includes a binder resin of which a main component is a block polymer having a crystal structure, a colorant, and a release agent; the binder resin includes polyester as a main component; the rate of a portion capable of forming a crystal structure to the binder resin is 50 to 80 mass %; a peak temperature Tp of a maximum endothermic peak attributed to the binder resin is 50 to 80° C. in endothermic amount measurement of the toner with a differential scanning calorimeter (DSC); and fused particles are heated at a heating temperature t (° C.) satisfying Tp??15.0?t?Tp??5.0 for at least 0.5 hr.Type: GrantFiled: November 21, 2011Date of Patent: March 17, 2015Assignee: Canon Kabushiki KaishaInventors: Kenji Aoki, Shuntaro Watanabe, Takaaki Kaya, Ayako Okamoto, Tetsuya Kinumatsu, Atsushi Tani, Takashige Kasuya
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Patent number: 8975000Abstract: The method of producing polymerized toner, the method including: dispersing a polymerizable monomer composition containing at least a polymerizable monomer and a colorant in an aqueous medium; and polymerizing the polymerizable monomer in the aqueous medium with a polymerization initiator to produce toner particles, and is characterized in that a polymerization initiator which has a specific structure and the hydrogen bond dissociation energies of which satisfy specific relationships is used as the polymerization initiator.Type: GrantFiled: July 24, 2008Date of Patent: March 10, 2015Assignee: Canon Kabushiki KaishaInventors: Atsushi Tani, Norikazu Fujimoto, Hitoshi Itabashi
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Publication number: 20150010430Abstract: An active species radiation device is for efficiently radiating active species (active oxygen or nitrogen) by using a plasma source not in contact with an irradiated object. An active species radiation device (100) includes: a chamber (110) in which flows of plasma generation gas and active species generation gas enter and which has an active species radiation port (110c) through which active species are radiated; an upstream electrode (120) positioned in a part of the chamber (110) corresponding to an upstream portion of the flow of the plasma generation gas; and a downstream electrode (130) positioned in a part of the chamber (110) corresponding to a more downstream portion of the flow of the plasma generation gas than the upstream electrode (120). The chamber (110) is configured so that the active species generation gas flows into a position between the upstream electrode (120) and the active species radiation port (110c).Type: ApplicationFiled: January 11, 2013Publication date: January 8, 2015Applicant: OSAKA UNIVERSITYInventors: Katsuhisa Kitano, Atsushi Tani
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Publication number: 20140355197Abstract: There is provided an electronic device including a flat-plate-like main unit including a keyboard, a flat-plate-like display unit which includes a display surface and is configured to move between a first state to be superimposed on the main unit and a second state to stand up from the first state, a hinge which connects the main unit and the display unit to each other in a manner that the display unit is movable with respect to the main unit, the hinge being provided in a center of the main unit in a left and right direction, a heat source and a cooling fan across the hinge in an inside of the main unit, and a heat pipe which connects the heat source and the cooling fan to each other and avoids an attaching portion of the hinge with respect to the main unit.Type: ApplicationFiled: May 19, 2014Publication date: December 4, 2014Applicant: SONY CORPORATIONInventors: Sin ARUGA, Atsushi TANI, Kenji SAITOU, Akira HANATSUKA
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Publication number: 20140355187Abstract: There is provided an electronic device including a flat main unit provided with a keyboard, a flat display unit having a display face, the flat display unit configured to movably slide between a first state that overlaps the main unit and a second state that is erect with respect to the main unit, and a hinge that is arranged so as to overlap the keyboard in the first state, and is configured to couple the main unit and the display unit together so that the display unit can move with respect to the main unit.Type: ApplicationFiled: October 28, 2013Publication date: December 4, 2014Applicant: SONY CORPORATIONInventors: Atsushi Tani, Akira Hanatsuka, Shingo Harada
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Publication number: 20140355186Abstract: There is provided an electronic device including a flat main unit provided with a keyboard, a flat display unit having a display face, the flat display unit configured to movably slide between a first state that overlaps the main unit and a second state that is erect with respect to the main unit, and a single hinge that is arranged so as to overlap the keyboard in the first state, and is configured to couple the main unit and the display unit together so that the display unit can move with respect to the main unit.Type: ApplicationFiled: October 28, 2013Publication date: December 4, 2014Applicant: SONY CORPORATIONInventors: Shinji Oguchi, Atsushi Tani, Akira Hanatsuka
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Publication number: 20140356777Abstract: A toner having good low-temperature fixability, charge stability, environmental stability, and durability and capable of stably producing high-quality images for a long time is provided. The toner includes a toner particle having a core-shell structure constituted of a core and a shell phase. The core contains a binder resin, a colorant, and wax, and the shell phase contains a resin A. The resin A is a comb polymer including a main chain portion (X), a side chain portion (Y), and a side chain portion (Z). The main chain portion (X) is a vinyl polymer, the side chain portion (Y) has an aliphatic polyester structure and has an ester group concentration of a polyester segment of 6.5 mmol/g or less, and the side chain portion (Z) has an organic polysiloxane structure and has an average number of Si—O bond repeating units of a siloxane segment of 2 or more and 100 or less.Type: ApplicationFiled: November 28, 2012Publication date: December 4, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Atsushi Tani, Toshifumi Mori, Takaaki Kaya, Tetsuya Kinumatsu, Kenji Aoki, Shuntaro Watanabe, Yoshihiro Nakagawa, Takashige Kasuya
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Publication number: 20140349232Abstract: A method for producing a toner that comprises toner particles, each of which comprises a binder resin, which comprises a resin (A) capable of forming a crystalline structure, and a colorant, the method including: a pressure holding step of, after preparing toner particles, holding the toner particles for 5 minutes or more at a pressure of 2.0 MPa or more under conditions of a temperature T1 (° C.) represented by formula (1): 20?T1?Tp2??(1) (wherein, Tp2 represents the onset temperature of the maximum endothermic peak derived from the resin (A)), wherein a peak temperature Tp1 of the maximum endothermic peak derived from the resin (A) during the first temperature rise of the toner particles as determined by differential scanning calorimetric measurement is 50° C. to 90° C.Type: ApplicationFiled: May 21, 2014Publication date: November 27, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuya Kinumatsu, Shuntaro Watanabe, Kenji Aoki, Atsushi Tani, Yoshihiro Nakagawa, Takaaki Kaya, Toshifumi Mori, Yusuke Kosaki, Takashige Kasuya
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Patent number: 8877417Abstract: In a toner formed of toner particles which include a colorant, a wax, and a binder resin containing a crystalline resin (a) primarily composed of a polyester, the crystalline resin has an endothermic peak temperature (Tp) in a range of 50° C. to 80° C., and in a viscoelasticity measurement of the toner, G?(Tp?10) is in a range of 5.0×107 to 5.0×108 Pa, G?(Tp+10) is in a range of 5.0×105 to 5.0×106 Pa, and G?(Tp?20), G?(Tp?10), G?(Tp+10), and G?(Tp+30) satisfy specific relationships.Type: GrantFiled: July 19, 2011Date of Patent: November 4, 2014Assignee: Canon Kabushiki KaishaInventors: Takaaki Kaya, Kenji Aoki, Ayako Okamoto, Atsushi Tani, Takashige Kasuya
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Patent number: 8846284Abstract: Provided is a toner comprising toner particles, wherein each of the toner particles has a core-shell structure composed of a core and a shell phase formed on the core, the shell phase contains a resin (B), and the core contains a binder resin (A), a colorant and a wax, wherein the toner particles contain the resin (B) in a specific amount with respect to the core, and wherein the solubility parameter (SP value) of the binder resin (A) is denoted by SP(A), the SP value of the resin (B) is denoted by SP(B), the SP value of a repeating unit with the smallest SP value from among repeating units constituting the resin (B) is denoted by SP(C), and the SP value of the wax is denoted by SP(W), each of the SP(A), SP(B), SP(C) and SP(W) satisfy specific relationships.Type: GrantFiled: January 14, 2013Date of Patent: September 30, 2014Assignee: Canon Kabushiki KaishaInventors: Tetsuya Kinumatsu, Atsushi Tani, Kenji Aoki, Shuntaro Watanabe, Takaaki Kaya, Ayako Okamoto, Yoshihiro Nakagawa, Toshifumi Mori, Takashige Kasuya
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Publication number: 20140220486Abstract: Provided is a toner containing toner particles, each of which includes a binder resin containing a polyester as a main component, a colorant, and a wax, in which the binder resin includes a block polymer in which a segment capable of forming a crystalline structure and a segment incapable of forming a crystalline structure are bonded, the toner has a maximum endothermic peak from the binder resin, as determined by differential scanning calorimetry measurement, with a peak temperature in a specific range and with an endothermic quantity in a specific range, and the wax is an ester wax having a functionality of 3 or more.Type: ApplicationFiled: April 10, 2014Publication date: August 7, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Takaaki Kaya, Tetsuya Kinumatsu, Toshifumi Mori, Ayako Okamoto, Kenji Aoki, Shuntaro Watanabe, Atsushi Tani, Takashige Kasuya
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Patent number: 8785101Abstract: Provided is a toner containing toner particles, each of which includes a binder resin containing a polyester as a main component, a colorant, and a wax, in which the binder resin includes a block polymer in which a segment capable of forming a crystalline structure and a segment incapable of forming a crystalline structure are bonded, the toner has a maximum endothermic peak from the binder resin, as determined by differential scanning calorimetry measurement, with a peak temperature in a specific range and with an endothermic quantity in a specific range, and the wax is an ester wax having a functionality of 3 or more.Type: GrantFiled: January 14, 2013Date of Patent: July 22, 2014Assignee: Canon Kabushiki KaishaInventors: Takaaki Kaya, Tetsuya Kinumatsu, Toshifumi Mori, Ayako Okamoto, Kenji Aoki, Shuntaro Watanabe, Atsushi Tani, Takashige Kasuya
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Patent number: 8741519Abstract: Provided is a toner having an excellent low-temperature fixability and hot offset resistance, a broad fixing temperature latitude in low-temperature areas to high-temperature areas, and a high heat-resistant storage stability. The toner includes toner particles having a core-shell structure in which a shell phase containing a resin A is formed on a core containing a binder resin, a colorant and a wax. In measurement of resin A by a differential scanning calorimetry (DSC), the peak temperature TpA (° C.) of a maximum endothermic peak in the first temperature rise is at least 55° C. but not more than 80° C. In measurement of a viscoelasticity of resin A, the loss elastic modulus at TpA?10 (° C.) is at least 1×107 Pa but not more than 1×108 Pa. In measurement of the viscoelasticity of resin A, the loss elastic moduli at TpA (° C.), TpA+10 (° C.) and TpA+25 (° C.) satisfy specific conditions.Type: GrantFiled: January 14, 2013Date of Patent: June 3, 2014Assignee: Canon Kabushiki KaishaInventors: Shuntaro Watanabe, Kenji Aoki, Tetsuya Kinumatsu, Takaaki Kaya, Atsushi Tani, Ayako Okamoto, Toshifumi Mori, Yoshihiro Nakagawa, Takashige Kasuya
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Patent number: 8642237Abstract: In differential scanning calorimetry of a toner, regarding a binder resin in the toner, (i) the peak temperature T10 of a maximum endothermic peak (temperature raising rate 10.0° C./min; P10) is 50° C. to 80° C. and the half-width W10 is 2.0° C. to 3.5° C. and (ii) W1, W10, and W20 satisfy that W1/W10 is 0.20 to 1.00 and W20/W10 is 1.00 to 1.50, where the half-width of a maximum endothermic peak (temperature raising rate of 1.0° C./min; P1) is represented by W1 (° C.) and the half-width of a maximum endothermic peak (temperature raising rate of 20.0° C./min; P20) is represented by W20 (° C.).Type: GrantFiled: July 20, 2011Date of Patent: February 4, 2014Assignee: Canon Kabushiki KaishaInventors: Atsushi Tani, Tetsuya Kinumatsu, Ayako Okamoto, Kenji Aoki, Shuntaro Watanabe, Takaaki Kaya, Takashige Kasuya
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Patent number: 8603712Abstract: Provided is a toner comprising a toner particle having a core-shell structure in which a shell phase containing a resin A is formed on a core that contains a binder resin, a colorant and a wax, wherein the resin A is a vinyl resin prepared by copolymerizing a vinyl monomer X that has an organopolysiloxane structure and a vinyl monomer Y that has a polyester segment capable of forming a crystalline structure; the content of the vinyl monomer X in a total monomer used for the copolymerization is in a particular range; the toner particle contains resin A in a particular proportion; and the binder resin contains a crystalline resin.Type: GrantFiled: January 14, 2013Date of Patent: December 10, 2013Assignee: Canon Kabushiki KaishaInventors: Kenji Aoki, Shuntaro Watanabe, Takaaki Kaya, Tetsuya Kinumatsu, Ayako Okamoto, Toshifumi Mori, Yoshihiro Nakagawa, Atsushi Tani, Takashige Kasuya
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Patent number: D705337Type: GrantFiled: March 27, 2013Date of Patent: May 20, 2014Assignee: Panasonic CorporationInventor: Atsushi Tani
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Patent number: D708654Type: GrantFiled: July 23, 2013Date of Patent: July 8, 2014Assignee: Panasonic CorporationInventor: Atsushi Tani
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Patent number: D716305Type: GrantFiled: July 24, 2012Date of Patent: October 28, 2014Assignee: Panasonic CorporationInventor: Atsushi Tani
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Patent number: D716752Type: GrantFiled: September 26, 2013Date of Patent: November 4, 2014Assignee: Panasonic CorporationInventors: Takehito Katori, Atsushi Tani
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Patent number: D719168Type: GrantFiled: September 5, 2014Date of Patent: December 9, 2014Assignee: Panasonic CorporationInventor: Atsushi Tani