Patents by Inventor Tetsuya Nishiguchi
Tetsuya Nishiguchi 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: 20220221807Abstract: An image forming apparatus to which a cartridge including a developer accommodating portion for accommodating a developer is detachably mountable includes an image bearing member, an exposure unit for exposing the image bearing member to light to form an electrostatic latent image on the image bearing member, a light receiving portion provided in the cartridge and for receiving the light emitted from the exposure unit, and a detecting portion for detecting vibration of the cartridge from a light reception value of the light received by the light receiving portion.Type: ApplicationFiled: March 30, 2022Publication date: July 14, 2022Inventors: Kohei Matsuda, Junko Hirata, Kazunori Hashimoto, Yasushi Katsuta, Makoto Hayashida, Yasunori Toriyama, Hiroomi Matsuzaki, Fumito Nonaka, Kazuki Matsumoto, Tetsuya Nishiguchi
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Patent number: 11353696Abstract: An image forming apparatus, including a photosensitive member, a scanning optical unit configured to scan the photosensitive member by laser light according to image information, a detection unit arranged in a position facing the photosensitive member and configured to output positional information on the laser light. The detection unit includes a detection portion into which the laser light reflected by the photosensitive member is incident, and a control unit configured to calculate a positional deviation amount of an irradiation position on the photosensitive member which is irradiated by the laser light based on the positional information output by the detection unit, and control the scanning optical unit to correct the positional deviation of the irradiation position of the laser light.Type: GrantFiled: March 8, 2021Date of Patent: June 7, 2022Assignee: Canon Kabushiki KaishaInventor: Tetsuya Nishiguchi
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Patent number: 11213854Abstract: A method of forming a multilayer coating film with excellent flip-flop properties and smoothness and allowing formation of a high-design multilayer coating film. In a method of forming a multilayer coating film comprising: a low-brightness intercoating film; a first base coating film; a second base coating film formed on an object to be coated; and a clear coating film formed on the second base coating film; the first base coating film is obtained by applying a first aqueous base coating material, the second base coating film is obtained by applying a second aqueous base coating material containing a brightness pigment, the clear coating film, with specific compositions and properties, is formed on a low-brightness intercoating film by a wet-on-wet method and the multilayer coating film is heat cured to form a cured multilayer coating film.Type: GrantFiled: May 10, 2019Date of Patent: January 4, 2022Assignees: KANSAI PAINT CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keita Ono, Masahiro Omura, Masayoshi Asai, Tetsuya Nishiguchi
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Publication number: 20210286290Abstract: An image forming apparatus, including a photosensitive member, a scanning optical unit configured to scan the photosensitive member by laser light according to image information, a detection unit arranged in a position facing the photosensitive member and configured to output positional information on the laser light. The detection unit includes a detection portion into which the laser light reflected by the photosensitive member is incident, and a control unit configured to calculate a positional deviation amount of an irradiation position on the photosensitive member which is irradiated by the laser light based on the positional information output by the detection unit, and control the scanning optical unit to correct the positional deviation of the irradiation position of the laser light.Type: ApplicationFiled: March 8, 2021Publication date: September 16, 2021Inventor: Tetsuya Nishiguchi
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Patent number: 10698335Abstract: An optical scanning apparatus, including: a detector configured to detect a writing start position of a light beam emitted from a light source and reflected by a rotary polygon mirror; and a control circuit board electrically connected to the light source, wherein the detector is fixed to the control circuit board, the control circuit board includes a first connection portion at which the light source is connected to the control circuit board and a second connection portion through which the control circuit board and an exterior are electrically connected, the control circuit board is fixed to an optical box by a fixing unit, and the fixing unit is arranged, between the first connection portion and the second connection portion, on a second straight line orthogonal to a first straight line connecting the light source and the detector, so as to be closer to the detector than to the light source.Type: GrantFiled: May 14, 2019Date of Patent: June 30, 2020Assignee: Canon Kabushiki KaishaInventors: Tetsuya Nishiguchi, Hiroyuki Fukuhara
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Publication number: 20190344309Abstract: The invention provides a method of forming a multilayer coating film with excellent flip-flop properties and smoothness, allowing formation of a high-design multilayer coating film. In a method of forming a multilayer coating film comprising a low-brightness intercoating film, a first base coating film and a second base coating film formed on an object to be coated, and a clear coating film formed on the second base coating film, a multilayer coating film that includes a first base coating film obtained by applying a first aqueous base coating material, a second base coating film obtained by applying a second aqueous base coating material containing a brightness pigment, and a clear coating film, with specific compositions and properties, is formed on a low-brightness intercoating film by a wet-on-wet method and is heat cured to form a cured multilayer coating film.Type: ApplicationFiled: May 10, 2019Publication date: November 14, 2019Applicants: KANSAI PAINT CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keita ONO, Masahiro OMURA, Masayoshi ASAI, Tetsuya NISHIGUCHI
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Publication number: 20190265608Abstract: An optical scanning apparatus, including: a detector configured to detect a writing start position of a light beam emitted from a light source and reflected by a rotary polygon mirror; and a control circuit board electrically connected to the light source, wherein the detector is fixed to the control circuit board, the control circuit board includes a first connection portion at which the light source is connected to the control circuit board and a second connection portion through which the control circuit board and an exterior are electrically connected, the control circuit board is fixed to an optical box by a fixing unit, and the fixing unit is arranged, between the first connection portion and the second connection portion, on a second straight line orthogonal to a first straight line connecting the light source and the detector, so as to be closer to the detector than to the light source.Type: ApplicationFiled: May 14, 2019Publication date: August 29, 2019Inventors: Tetsuya Nishiguchi, Hiroyuki Fukuhara
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Patent number: 9864934Abstract: The optical scanning device includes a storage unit configured to store information on a scanning time of laser light and an emitted position of the laser light in a sub-scanning direction, the laser light measured on a plane. A scanning time for forming one scanning line is set based on the information on the measured scanning time and the measured emitted position, which is stored in the storage unit, and a radius of a photosensitive drum. This allows a magnification error in a main scanning direction to be reduced with an inexpensive configuration while realizing downsizing of an apparatus.Type: GrantFiled: December 4, 2015Date of Patent: January 9, 2018Assignee: CANON KABUSHIKI KAISHAInventors: Hisanori Kobayashi, Tetsuya Nishiguchi
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Patent number: 9854120Abstract: An optical scanning apparatus includes a deflector for scanningly deflecting a beam; a scanning lens for imaging the beam deflected by the deflector on a surface; a casing for a light source, the deflector and the lens; and an elastic member urging the lens toward the casing along an optical axis. The lens is provided with an abutment at a beam emergent side of the lens, the abutment abutting to the casing, and is provided with a limiting portion at a side opposite from the emergent side, the limiting portion limiting movement in the opposite direction. The elastic member and the limiting portion limits the movement of the lens in the direction opposite to the direction of the lens. When the lens contacts a positioning portion of the casing, a gap is provided between the elastic member and the limiting portion with respect to the direction.Type: GrantFiled: November 14, 2016Date of Patent: December 26, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Yoshihiko Tanaka, Jun Nagatoshi, Tetsuya Nishiguchi
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Patent number: 9781282Abstract: The present invention roughens at least a partial region of an outer planar surface of at least one of an optical case and a lid of a laser scanner; thus, electrification of the optical case to be caused by friction with another member or a person is reduced, and damage to an electronic component is prevented.Type: GrantFiled: June 7, 2016Date of Patent: October 3, 2017Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Fukuhara, Tetsuya Nishiguchi, Isshin Sato, Mitsuhiro Obara
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Publication number: 20170142283Abstract: An optical scanning apparatus includes a deflector for scanningly deflecting a beam; a scanning lens for imaging the beam deflected by the deflector on a surface; a casing for a light source, the deflector and the lens; and an elastic member urging the lens toward the casing along an optical axis. The lens is provided with an abutment at a beam emergent side of the lens, the abutment abutting to the casing, and is provided with a limiting portion at a side opposite from the emergent side, the limiting portion limiting movement in the opposite direction. The elastic member and the limiting portion limits the movement of the lens in the direction opposite to the direction of the lens. When the lens contacts a positioning portion of the casing, a gap is provided between the elastic member and the limiting portion with respect to the direction.Type: ApplicationFiled: November 14, 2016Publication date: May 18, 2017Inventors: Yoshihiko Tanaka, Jun Nagatoshi, Tetsuya Nishiguchi
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Patent number: 9571688Abstract: An optical scanning apparatus includes first and second light source units including respective light sources; a rotating polygon mirror that performs deflection scanning of laser beams emitted from the light sources included in the first and second light source units; and a positioning member including a first abutting portion on which the first light source unit abuts and a second abutting portion on which the second light source unit abuts, the positioning member positioning the first and second light source units. The first and second light source units are positioned by the positioning member and arranged next to each other in a rotation axis direction of the rotating polygon mirror. The positioning member is a single member disposed between the first and second light source units in the rotation axis direction.Type: GrantFiled: June 28, 2016Date of Patent: February 14, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Taku Murotani, Kunihiro Niwa, Junya Azami, Tetsuya Nishiguchi, Hisanori Kobayashi
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Publication number: 20160373598Abstract: The present invention roughens at least a partial region of an outer planar surface of at least one of an optical case and a lid of a laser scanner; thus, electrification of the optical case to be caused by friction with another member or a person is reduced, and damage to an electronic component is prevented.Type: ApplicationFiled: June 7, 2016Publication date: December 22, 2016Inventors: Hiroyuki Fukuhara, Tetsuya Nishiguchi, Isshin Sato, Mitsuhiro Obara
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Publication number: 20160309053Abstract: An optical scanning apparatus includes first and second light source units including respective light sources; a rotating polygon mirror that performs deflection scanning of laser beams emitted from the light sources included in the first and second light source units; and a positioning member including a first abutting portion on which the first light source unit abuts and a second abutting portion on which the second light source unit abuts, the positioning member positioning the first and second light source units. The first and second light source units are positioned by the positioning member and arranged next to each other in a rotation axis direction of the rotating polygon mirror. The positioning member is a single member disposed between the first and second light source units in the rotation axis direction.Type: ApplicationFiled: June 28, 2016Publication date: October 20, 2016Inventors: Taku Murotani, Kunihiro Niwa, Junya Azami, Tetsuya Nishiguchi, Hisanori Kobayashi
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Patent number: 9405117Abstract: An optical scanning apparatus includes first and second light source units including respective light sources; a rotating polygon mirror that performs deflection scanning of laser beams emitted from the light sources included in the first and second light source units; and a positioning member including a first abutting portion on which the first light source unit abuts and a second abutting portion on which the second light source unit abuts, the positioning member positioning the first and second light source units. The first and second light source units are positioned by the positioning member and arranged next to each other in a rotation axis direction of the rotating polygon mirror. The positioning member is a single member disposed between the first and second light source units in the rotation axis direction.Type: GrantFiled: December 11, 2013Date of Patent: August 2, 2016Assignee: Canon Kabushiki KaishaInventors: Taku Murotani, Kunihiro Niwa, Junya Azami, Tetsuya Nishiguchi, Hisanori Kobayashi
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Publication number: 20160171350Abstract: The optical scanning device includes a storage unit configured to store information on a scanning time of laser light and an emitted position of the laser light in a sub-scanning direction, the laser light measured on a plane. A scanning time for forming one scanning line is set based on the information on the measured scanning time and the measured emitted position, which is stored in the storage unit, and a radius of a photosensitive drum. This allows a magnification error in a main scanning direction to be reduced with an inexpensive configuration while realizing downsizing of an apparatus.Type: ApplicationFiled: December 4, 2015Publication date: June 16, 2016Inventors: Hisanori Kobayashi, Tetsuya Nishiguchi
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Publication number: 20140168737Abstract: An optical scanning apparatus includes first and second light source units including respective light sources; a rotating polygon mirror that performs deflection scanning of laser beams emitted from the light sources included in the first and second light source units; and a positioning member including a first abutting portion on which the first light source unit abuts and a second abutting portion on which the second light source unit abuts, the positioning member positioning the first and second light source units. The first and second light source units are positioned by the positioning member and arranged next to each other in a rotation axis direction of the rotating polygon mirror. The positioning member is a single member disposed between the first and second light source units in the rotation axis direction.Type: ApplicationFiled: December 11, 2013Publication date: June 19, 2014Inventors: Taku Murotani, Kunihiro Niwa, Junya Azami, Tetsuya Nishiguchi, Hisanori Kobayashi
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Patent number: 8675036Abstract: An optical scanning apparatus has first and second light sources, a deflection scanning device, and first and second scanning optical systems that guide the first and second laser beams deflected for scanning by the deflection scanning device. The first and second scanning optical systems include scanning lenses and a polarization beam splitter arranged in a downstream side of an optical path of the scanning lens, the first scanning optical system including a half-wave plate arranged in the downstream side of the optical path of the scanning lens and in an upstream side of an optical path of the polarization beam splitter, the first laser beam and the second laser beam having different phases by 180 degrees from each other before being incident on the first and second scanning optical systems.Type: GrantFiled: August 23, 2012Date of Patent: March 18, 2014Assignee: Canon Kabushiki KaishaInventor: Tetsuya Nishiguchi
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Publication number: 20130050387Abstract: The present invention provides an optical scanning apparatus which includes first and second light sources, a deflection scanning device, and first and second scanning optical systems that guides the first and second laser beams deflected for scanning by the deflection scanning device, wherein the first and second scanning optical systems include scanning lenses, and a polarization beam splitter arranged in a downstream side of an optical path of the scanning lens, wherein the first scanning optical system includes a half-wave plate arranged in the downstream side of the optical path of the scanning lens and in an upstream side of an optical path of the polarization beam splitter, wherein the first laser beam and the second laser beam before being incident on the first and second scanning optical systems have different phases by 180 degrees from each other.Type: ApplicationFiled: August 23, 2012Publication date: February 28, 2013Applicant: CANON KABUSHIKI KAISHAInventor: Tetsuya Nishiguchi
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Patent number: 8163659Abstract: In method and apparatus for oxide film formation, light in an ultraviolet light range is irradiated on a substrate, a starting gas of an organosilicon and an ozone gas are supplied to the substrate to form an oxide film on a surface of the substrate, and the ozone gas is mixed with the starting gas at room temperature and a mixture quantity of the ozone gas with the starting gas is set to be equal to a chemical equivalent or more necessary for totally oxidizing the starting gas.Type: GrantFiled: August 22, 2007Date of Patent: April 24, 2012Assignees: Meidensha Corporation, National Institute of Advanced Industrial Science and TechnologyInventors: Tetsuya Nishiguchi, Naoto Kameda, Shigeru Saitou, Hidehiko Nonaka, Shingo Ichimura