Patents by Inventor Takatoshi Tanaka
Takatoshi Tanaka 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: 20190322022Abstract: A polygonal mirror includes a reflecting surface capable of reflecting laser light emitted from a light source, a base material made of a metal material, and a molded member molded outside the base material and including a first surface and a second surface which crosses the first surface and which corresponds to the reflecting surface.Type: ApplicationFiled: April 15, 2019Publication date: October 24, 2019Inventors: Mitsuhiro Ohta, Atsushi Takata, Yoshihiko Tanaka, Takatoshi Tanaka, Fumihiko Yamaya, Naoki Matsushita, Hiroki Katayama
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Publication number: 20190322023Abstract: A polygonal mirror includes reflecting surfaces, a molded member including a first surface and a second surface, a contact portion, and gate marks. Each of said first surface and said second surface has a polygonal shape. The contact portion and the gate marks are formed at non-overlapping positions with a line segment connecting a vertex of the polygonal shape with a rotation center. The gate marks and the reflecting surfaces are the same in number. A perpendicular bisector of a line segment connecting centers of the gate marks adjacent to each other with respect to a rotational direction of the polygonal mirror is formed at a position passing through an associated vertex of the polygonal shape and the rotation center.Type: ApplicationFiled: April 17, 2019Publication date: October 24, 2019Inventors: Naoki Matsushita, Atsushi Takata, Yoshihiko Tanaka, Takatoshi Tanaka, Fumihiko Yamaya, Mitsuhiro Ohta, Hiroki Katayama
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Patent number: 10178956Abstract: A subject information acquisition apparatus comprises a casing in which a transmissive member capable of transmitting acoustic waves and laser beams therethrough is provided; a light irradiating unit disposed inside the casing so as to irradiate a subject with laser beams with the transmissive member interposed; an acoustic wave probe disposed inside the casing so as to receive acoustic waves with the transmissive member interposed; and a scanning mechanism disposed inside the casing so as to move the light irradiating unit and the acoustic wave probe in relation to the casing, wherein the casing is configured to be movable on the subject.Type: GrantFiled: August 15, 2017Date of Patent: January 15, 2019Assignee: Canon Kabushiki KaishaInventor: Takatoshi Tanaka
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Publication number: 20180333970Abstract: An inkjet printing method including the steps of applying a first ink to a printing medium and applying a second ink to the printing medium so as to at least overlap a region provided with the first ink, wherein the first ink is an aqueous ink containing silver particles, the second ink is an aqueous ink containing an anionic dye, the printing medium includes an ink-receiving layer containing at least one cationic compound selected from a group consisting of a polyvalent metal salt and a salt of a cationic resin, and the content (g/m2) of the cationic compound per unit area of the ink-receiving layer is 0.20 g/m2 or more.Type: ApplicationFiled: May 11, 2018Publication date: November 22, 2018Inventors: Kenichi Iida, Kazuhiko Araki, Tetsufumi Shiba, Takatoshi Tanaka
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Patent number: 10105061Abstract: A long period of time is required to complete measurement performed by a subject information obtaining apparatus. Accordingly, a subject information obtaining apparatus includes a receiver including a plurality of conversion elements which receive acoustic waves and output reception signals and a supporting member including the conversion elements disposed therein, a movement mechanism configured to move the receiver, and a controller configured to input a driving signal to the movement mechanism. The conversion elements are disposed in the supporting member such that directional axes of a number of the conversion elements are converged. The controller controls the movement mechanism so that a center position of a scanning trajectory of the receiver is changed.Type: GrantFiled: August 26, 2014Date of Patent: October 23, 2018Assignee: Canon Kabushiki KaishaInventors: Takatoshi Tanaka, Naoto Abe
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Patent number: 10025223Abstract: An ink let recording medium of this disclosure has a substrate and at least one or more ink receiving layers on the substrate, in which a first ink receiving layer which is the outermost surface layer contains anionic inorganic particles having an average particle diameter of 3.0 ?m or more, a binder, a cationic polymer, and a polyvalent metal salt, the content of the polyvalent metal salt based on the anionic inorganic particles in the first ink receiving layer is 5 mass % or more and 40 mass % or less, the content ratio of the polyvalent metal salt to the cationic polymer in the first ink receiving layer (Content of polyvalent metal salt/Content of cationic polymer) is 1.0 or more and 8.0 or less, and the arithmetic average roughness Ra of the surface of the recording medium is 1.0 ?m or more.Type: GrantFiled: September 13, 2017Date of Patent: July 17, 2018Assignee: Canon Kabushiki KaishaInventors: Yasuhiro Nito, Takatoshi Tanaka, Arika Tanaka, Tetsufumi Shiba
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Patent number: 9944107Abstract: An inkjet recording medium including a substrate and an ink receiving layer on the substrate, wherein the ink receiving layer includes amorphous silica having an average secondary particle size of 3 ?m or more, and a binder, the peak area ratio (C1s/Si2p) of a carbon atom (C1s) to a silicon atom (Si2p) in measurement of the surface of the ink receiving layer by X-ray photoelectron spectroscopy is 0.7 or more and 2.3 or less, and the contact angle between the surface of the ink receiving layer and pure water after a lapse of 10 ms from contact of the surface of the ink receiving layer with 4 ?l of pure water is 60° or less.Type: GrantFiled: December 20, 2016Date of Patent: April 17, 2018Assignee: Canon Kabushiki KaishaInventors: Takatoshi Tanaka, Yasuhiro Nito, Tetsufumi Shiba
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Publication number: 20180074434Abstract: An ink let recording medium of this disclosure has a substrate and at least one or more ink receiving layers on the substrate, in which a first ink receiving layer which is the outermost surface layer contains anionic inorganic particles having an average particle diameter of 3.0 ?m or more, a binder, a cationic polymer, and a polyvalent metal salt, the content of the polyvalent metal salt based on the anionic inorganic particles in the first ink receiving layer is 5 mass % or more and 40 mass % or less, the content ratio of the polyvalent metal salt to the cationic polymer in the first ink receiving layer (Content of polyvalent metal salt/Content of cationic polymer) is 1.0 or more and 8.0 or less, and the arithmetic average roughness Ra of the surface of the recording medium is 1.0 ?m or more.Type: ApplicationFiled: September 13, 2017Publication date: March 15, 2018Inventors: Yasuhiro Nito, Takatoshi Tanaka, Arika Tanaka, Tetsufumi Shiba
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Publication number: 20180008148Abstract: A subject information acquisition apparatus comprises a casing in which a transmissive member capable of transmitting acoustic waves and laser beams therethrough is provided; a light irradiating unit disposed inside the casing so as to irradiate a subject with laser beams with the transmissive member interposed; an acoustic wave probe disposed inside the casing so as to receive acoustic waves with the transmissive member interposed; and a scanning mechanism disposed inside the casing so as to move the light irradiating unit and the acoustic wave probe in relation to the casing, wherein the casing is configured to be movable on the subject.Type: ApplicationFiled: August 15, 2017Publication date: January 11, 2018Inventor: Takatoshi Tanaka
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Publication number: 20170308027Abstract: An image forming apparatus includes a printer portion; an image reading portion rotatable relative to the printer portion; a discharge portion configured to stack the recording material discharged from an inside of the printer portion, the discharge portion being supported rotatably relative to the printer portion; and a regulating member provided between the discharge portion and the image reading portion and configured to regulate movement of the recording material stacked on the discharge portion. When the image forming apparatus is seen in a rotational axis direction of the image reading portion, at least a part of the regulating member in a state in which the image reading portion and the discharge portion are open away from the printer portion is hidden inside a contour of a casing of the image reading portion.Type: ApplicationFiled: April 25, 2017Publication date: October 26, 2017Inventor: Takatoshi Tanaka
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Patent number: 9763578Abstract: A subject information acquisition apparatus comprises a casing in which a transmissive member capable of transmitting acoustic waves and laser beams therethrough is provided; a light irradiating unit disposed inside the casing so as to irradiate a subject with laser beams with the transmissive member interposed; an acoustic wave probe disposed inside the casing so as to receive acoustic waves with the transmissive member interposed; and a scanning mechanism disposed inside the casing so as to move the light irradiating unit and the acoustic wave probe in relation to the casing, wherein the casing is configured to be movable on the subject.Type: GrantFiled: October 30, 2014Date of Patent: September 19, 2017Assignee: CANON KABUSHIKI KAISHAInventor: Takatoshi Tanaka
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Patent number: 9730589Abstract: One aspect of the present invention relates to an examined-portion information acquisition apparatus including two examined-portion holding members each configured to hold one of two examined portions, a receiver configured to receive an acoustic wave, and a moving system configured to move the receiver from a position at which the receiver receives an acoustic wave from one examined portion held by one examined-portion holding member among the two examined-portion holding members to a position at which the receiver receives an acoustic wave from another examined portion held by the other examined-portion holding member, wherein the receiver includes a plurality of transducers configured to receive an acoustic wave, and a supporting member on which the plurality of transducers are arranged, and the plurality of transducers are arranged on the supporting member such that directivity axes of some transducers among the plurality of transducers converge.Type: GrantFiled: October 29, 2014Date of Patent: August 15, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Takatoshi Tanaka, Kenichi Nagae, Robert A Kruger
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Publication number: 20170197450Abstract: An inkjet recording medium including a substrate and an ink receiving layer on the substrate, wherein the ink receiving layer includes amorphous silica having an average secondary particle size of 3 ?m or more, and a binder, the peak area ratio (C1s/Si2p) of a carbon atom (C1s) to a silicon atom (Si2p) in measurement of the surface of the ink receiving layer by X-ray photoelectron spectroscopy is 0.7 or more and 2.3 or less, and the contact angle between the surface of the ink receiving layer and pure water after a lapse of 10 ms from contact of the surface of the ink receiving layer with 4 ?l of pure water is 60° or less.Type: ApplicationFiled: December 20, 2016Publication date: July 13, 2017Inventors: Takatoshi Tanaka, Yasuhiro Nito, Tetsufumi Shiba
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Patent number: 9694613Abstract: A recording medium includes a substrate, a first ink-receiving layer, and a second ink-receiving layer serving as a top layer in this order. The first ink-receiving layer contains an amorphous silica having an average particle size of 1.0 ?m or more. The second ink-receiving layer contains a colloidal silica. The root-mean-square slope R?q of roughness profile elements, provided in JIS B 0601:2001, of a surface of the second ink-receiving layer is 0.3 or more.Type: GrantFiled: September 22, 2015Date of Patent: July 4, 2017Assignee: Canon Kabushiki KaishaInventors: Arika Tanaka, Ryo Taguri, Takatoshi Tanaka, Tomokazu Kotake, Takashi Sugiura, Jun Wang
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Patent number: 9643441Abstract: A recording medium includes a substrate, a first ink-receiving layer, and a second ink-receiving layer adjacent to the first ink-receiving layer in this order. The first ink-receiving layer contains an inorganic particle having an average particle size of 50 nm or less, and the second ink-receiving layer contains an amorphous silica having an average particle size of 3.2 ?m or more.Type: GrantFiled: September 22, 2015Date of Patent: May 9, 2017Assignee: Canon Kabushiki KaishaInventors: Ryo Taguri, Arika Tanaka, Takashi Sugiura, Tomokazu Kotake, Takatoshi Tanaka, Jun Wang
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Publication number: 20170067994Abstract: A transducer array including a plurality of transducers each of which receives an acoustic wave and transduces the received acoustic wave into an electric signal, and a support member supporting the transducers, and having an inner surface which is defined by a quadric surface of revolution formed according to an imaginary quadratic curve rotating about an imaginary rotation axis. Each transducer includes a receiving surface having a substantially parallelogram shape defined by four vertexes, the receiving surface being connected to the support member so as to be oriented towards the inner surface of the support, and a transducing element transducing an acoustic wave, received by the transducer via the receiving surface, into an electric signal. The receiving surface is arranged in the transducer array such that any one of the four vertexes is closer to the imaginary rotation axis than the other three vertexes.Type: ApplicationFiled: August 31, 2016Publication date: March 9, 2017Inventors: Takatoshi Tanaka, Takaaki Nakabayashi, Nobuhiro Ito
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Patent number: 9555655Abstract: A recording medium includes a substrate and a first ink-receiving layer. The first ink-receiving layer contains an amorphous silica having an average particle size of 1.0 ?m or more and an inorganic particle having an average particle size of 50 nm or less. The content of the amorphous silica in the first ink-receiving layer is 30 mass % or more and 95 mass % or less based on a total content of all inorganic particles.Type: GrantFiled: September 22, 2015Date of Patent: January 31, 2017Assignee: Canon Kabushiki KaishaInventors: Takashi Sugiura, Ryo Taguri, Arika Tanaka, Tomokazu Kotake, Takatoshi Tanaka, Jun Wang
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Publication number: 20160082765Abstract: A recording medium includes a substrate and a first ink-receiving layer. The first ink-receiving layer contains an amorphous silica having an average particle size of 1.0 ?m or more and an inorganic particle having an average particle size of 50 nm or less. The content of the amorphous silica in the first ink-receiving layer is 30 mass % or more and 95 mass % or less based on a total content of all inorganic particles.Type: ApplicationFiled: September 22, 2015Publication date: March 24, 2016Inventors: Takashi Sugiura, Ryo Taguri, Arika Tanaka, Tomokazu Kotake, Takatoshi Tanaka, Jun Wang
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Publication number: 20160082767Abstract: A recording medium includes a substrate, a first ink-receiving layer, and a second ink-receiving layer serving as a top layer in this order. The first ink-receiving layer contains an amorphous silica having an average particle size of 1.0 ?m or more. The second ink-receiving layer contains a colloidal silica. The root-mean-square slope R?q of roughness profile elements, provided in JIS B 0601:2001, of a surface of the second ink-receiving layer is 0.3 or more.Type: ApplicationFiled: September 22, 2015Publication date: March 24, 2016Inventors: Arika Tanaka, Ryo Taguri, Takatoshi Tanaka, Tomokazu Kotake, Takashi Sugiura, Jun Wang
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Publication number: 20160082766Abstract: A recording medium includes a substrate, a first ink-receiving layer, and a second ink-receiving layer adjacent to the first ink-receiving layer in this order. The first ink-receiving layer contains an inorganic particle having an average particle size of 50 nm or less, and the second ink-receiving layer contains an amorphous silica having an average particle size of 3.2 ?m or more.Type: ApplicationFiled: September 22, 2015Publication date: March 24, 2016Inventors: Ryo Taguri, Arika Tanaka, Takashi Sugiura, Tomokazu Kotake, Takatoshi Tanaka, Jun Wang