Patents by Inventor Takayuki Mizuta
Takayuki Mizuta 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: 20170038715Abstract: The present invention provides a fixing device including a flexible cylindrical rotary member and an inner-surface opposing portion that opposes an inner surface of the rotary member at an end portion of the rotary member in a generatrix direction. The inner-surface opposing portion moves upstream in a recording material conveying direction in accordance with lateral shift of the rotary member in the generatrix direction. This restricts the lateral shift of the rotary member.Type: ApplicationFiled: October 20, 2016Publication date: February 9, 2017Inventors: Hideki Ohta, Terutaka Endo, Seiji Obata, Jiro Moriya, Takayuki Mizuta
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Patent number: 9513583Abstract: The present invention provides a fixing device including a flexible cylindrical rotary member and an inner-surface opposing portion that opposes an inner surface of the rotary member at an end portion of the rotary member in a generatrix direction. The inner-surface opposing portion moves upstream in a recording material conveying direction in accordance with lateral shift of the rotary member in the generatrix direction. This restricts the lateral shift of the rotary member.Type: GrantFiled: July 28, 2014Date of Patent: December 6, 2016Assignee: Canon Kabushiki KaishaInventors: Hideki Ohta, Terutaka Endo, Seiji Obata, Jiro Moriya, Takayuki Mizuta
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Patent number: 9423757Abstract: An image fixing apparatus includes a heater including a substrate, a first electrode provided on one side of the substrate and a second electrode provided on the other side of the substrate; and a connector, connected with the heater, for receiving electric power, the connector including an electrically insulative housing, and a contact terminal provided inside the housing and having first spring contact contacted to the first electrode and a second spring contact contacted to the second electrode, wherein the first spring contact and the second spring contact are disposed at positions different as seen in a direction perpendicular to a surface of the substrate.Type: GrantFiled: January 29, 2015Date of Patent: August 23, 2016Assignee: Canon Kabushiki KaishaInventors: Takayuki Mizuta, Hideki Ohta, Atsuhiko Yamaguchi, Yusuke Nakashima
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Publication number: 20160223971Abstract: A fixing device includes first and second members, a frame supporting the second member, and two pressure mechanisms provided on either end of the first member. The mechanism includes a lever having one end supported by the frame in a rotatable manner in a pressure direction, and a helical compression spring disposed between a first spring support provided on the other end of the lever and a second spring support on the frame. At least one of the first and second spring supports includes a first area and a second area closer to the spring in the axial direction than the first area, the first area is in contact with an area of the spring close to a winding end of the spring, and the second area is in contact with an area of the spring farther away from the winding end in a winding direction than the first area.Type: ApplicationFiled: January 27, 2016Publication date: August 4, 2016Inventors: Jiro Moriya, Hideki Ohta, Takayuki Mizuta, Naoto Tsuchihashi, Eiji Uekawa, Hiroshi Kataoka, Keisuke Mochizuki
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Publication number: 20160223962Abstract: A fixing apparatus fixes a toner image on a recording material by conveying and heating the recording material at a nip portion, and includes a first rotating member, a second rotating member configured to form the nip portion with the first rotating member, the first and second rotating members being arranged such that rotation of the second rotating member causes rotation of the first rotating member, a frame configured to support the second rotating member, so as to be rotatable and an opening and closing part arranged to open and close relative to the frame on the downstream side of the nip portion in the conveyance direction of the recoding material, the opening and closing part having a duct through which air flows.Type: ApplicationFiled: January 28, 2016Publication date: August 4, 2016Inventors: Hiroshi Kataoka, Eiji Uekawa, Keisuke Mochizuki, Naoto Tsuchihashi, Takayuki Mizuta
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Publication number: 20160085173Abstract: The detector that detects a light beam emitted from a light source of a second image forming device and reflected by a polygon mirror, and an adjustment device that performs adjustment processing of adjusting the velocity of the polygon mirror based on an output of the detector are provided. Before a first image forming device performs the image forming processing, the adjustment device performs the adjustment processing while causing the light source of the second image forming device to emit the light beam during a time period including at least a time period in which a photosensitive member of the second image forming device is emitted with the light beam. Before the adjustment processing is finished, the first image forming device starts to move a developing member to a developing position.Type: ApplicationFiled: November 30, 2015Publication date: March 24, 2016Inventors: Takayuki Mizuta, Masayoshi Takahashi
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Patent number: 9291984Abstract: An image fixing apparatus for heating and fixing an unfixed image formed on a recording material, comprising a heater including a substrate, a first electrode provided on one side of the substrate and a second electrode provided on the other side of the substrate; and a connector, connected with the heater, for receiving electric power, the connector including an electrically insulative housing, and a contact terminal provided inside the housing and having first spring contact contacted to the first electrode and a second spring contact contacted to the second electrode, wherein the contact terminal is swingable relative to the housing.Type: GrantFiled: January 27, 2015Date of Patent: March 22, 2016Assignee: Canon Kabushiki KaishaInventors: Jiro Moriya, Takayuki Mizuta, Hideki Ohta, Yoshisuke Kasuya, Kazushi Suzuki
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Patent number: 9227427Abstract: The detector that detects a light beam emitted from a light source of a second image forming device and reflected by a polygon mirror, and an adjustment device that performs adjustment processing of adjusting the velocity of the polygon mirror based on an output of the detector are provided. Before a first image forming device performs the image forming processing, the adjustment device performs the adjustment processing while causing the light source of the second image forming device to emit the light beam during a time period including at least a time period in which a photosensitive member of the second image forming device is emitted with the light beam. Before the adjustment processing is finished, the first image forming device starts to move a developing member to a developing position.Type: GrantFiled: December 20, 2012Date of Patent: January 5, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Takayuki Mizuta, Masayoshi Takahashi
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Patent number: 9057975Abstract: An image forming apparatus includes first and second photosensitive members; first and second light sources; a rotatable polygonal mirror; a first signal output portion; and a second signal output portion. The first light source emits the light at timing on the basis of the first signal, and the second light source emits the light at timing on the basis of the second signal so that latent images are formed on the first and second photosensitive members, respectively, and then are developed with developers to form developer images on the first and second photosensitive members, respectively, and then an image is formed by superposing the developer images. Before output of a second signal from the second signal output portion is started, the first light source emits the light on the basis of a first signal to start formation of the latent image on the first photosensitive member.Type: GrantFiled: December 11, 2013Date of Patent: June 16, 2015Assignee: Canon Kabushiki KaishaInventors: Hironobu Nihei, Takayuki Mizuta
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Publication number: 20150139680Abstract: An image fixing apparatus for heating and fixing an unfixed image formed on a recording material, comprising a heater including a substrate, a first electrode provided on one side of the substrate and a second electrode provided on the other side of the substrate; and a connector, connected with the heater, for receiving electric power, the connector including an electrically insulative housing, and a contact terminal provided inside the housing and having first spring contact contacted to the first electrode and a second spring contact contacted to the second electrode, wherein the contact terminal is swingable relative to the housing.Type: ApplicationFiled: January 27, 2015Publication date: May 21, 2015Inventors: Jiro Moriya, Takayuki Mizuta, Hideki Ohta, Yoshisuke Kasuya, Kazushi Suzuki
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Publication number: 20150139681Abstract: An image fixing apparatus includes a heater including a substrate, a first electrode provided on one side of the substrate and a second electrode provided on the other side of the substrate; and a connector, connected with the heater, for receiving electric power, the connector including an electrically insulative housing, and a contact terminal provided inside the housing and having first spring contact contacted to the first electrode and a second spring contact contacted to the second electrode, wherein the first spring contact and the second spring contact are disposed at positions different as seen in a direction perpendicular to a surface of the substrate.Type: ApplicationFiled: January 29, 2015Publication date: May 21, 2015Inventors: Takayuki Mizuta, Hideki Ohta, Atsuhiko Yamaguchi, Yusuke Nakashima
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Patent number: 8995868Abstract: An image fixing apparatus for heating and fixing an unfixed image formed on a recording material, comprising a heater including a substrate, a first electrode provided on one side of the substrate and a second electrode provided on the other side of the substrate; and a connector, connected with the heater, for receiving electric power, the connector including an electrically insulative housing, and a contact terminal provided inside the housing and having first spring contact contacted to the first electrode and a second spring contact contacted to the second electrode, wherein the contact terminal is swingable relative to the housing.Type: GrantFiled: May 10, 2013Date of Patent: March 31, 2015Assignee: Canon Kabushiki KaishaInventors: Jiro Moriya, Takayuki Mizuta, Hideki Ohta, Yoshisuke Kasuya, Kazushi Suzuki
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Patent number: 8983328Abstract: An image fixing apparatus includes a heater including a substrate, a first electrode provided on one side of the substrate and a second electrode provided on the other side of the substrate; and a connector, connected with the heater, for receiving electric power, the connector including an electrically insulative housing, and a contact terminal provided inside the housing and having first spring contact contacted to the first electrode and a second spring contact contacted to the second electrode, wherein the first spring contact and the second spring contact are disposed at positions different as seen in a direction perpendicular to a surface of the substrate.Type: GrantFiled: May 9, 2013Date of Patent: March 17, 2015Assignee: Canon Kabushiki KaishaInventors: Takayuki Mizuta, Hideki Ohta, Atsuhiko Yamaguchi, Yusuke Nakashima
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Publication number: 20150037078Abstract: The present invention provides a fixing device including a flexible cylindrical rotary member and an inner-surface opposing portion that opposes an inner surface of the rotary member at an end portion of the rotary member in a generatrix direction. The inner-surface opposing portion moves upstream in a recording material conveying direction in accordance with lateral shift of the rotary member in the generatrix direction. This restricts the lateral shift of the rotary member.Type: ApplicationFiled: July 28, 2014Publication date: February 5, 2015Inventors: Hideki Ohta, Terutaka Endo, Seiji Obata, Jiro Moriya, Takayuki Mizuta
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Publication number: 20140168340Abstract: An image forming apparatus includes: first and second photosensitive members; first and second light sources; a rotatable polygonal mirror; a first signal output means; and a second signal output means. The first light source emits the light at timing on the basis of the first signal and the second light source emits the light at timing on the basis of the second signal so that latent images are formed on the first and second photosensitive members, respectively, and then are developed with developers to form developer images on the first and second photosensitive members, respectively, and then an image is formed by superposing the developer images. Before output of a second signal from the second signal output portion is started, the first light source emits the light on the basis of a first signal to start formation of the latent image on the first photosensitive member.Type: ApplicationFiled: December 11, 2013Publication date: June 19, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Hironobu Nihei, Takayuki Mizuta
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Publication number: 20130302060Abstract: An image fixing apparatus for heating and fixing an unfixed image formed on a recording material, comprising a heater including a substrate, a first electrode provided on one side of the substrate and a second electrode provided on the other side of the substrate; and a connector, connected with the heater, for receiving electric power, the connector including an electrically insulative housing, and a contact terminal provided inside the housing and having first spring contact contacted to the first electrode and a second spring contact contacted to the second electrode, wherein the contact terminal is swingable relative to the housing.Type: ApplicationFiled: May 10, 2013Publication date: November 14, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Jiro Moriya, Takayuki Mizuta, Hideki Ohta, Yoshisuke Kasuya, Kazushi Suzuki