Patents by Inventor Takamichi Matsuo
Takamichi Matsuo 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: 20230314992Abstract: A fixing device includes a roller, an apparatus frame, a connector and a heating unit having a film having a tubular shape, a heater, a heater holder disposed in an internal space of the film, and a unit holder disposed at a position at which the unit holder faces an end surface of the film in a longitudinal direction of the film. The connector includes an engagement portion configured to engage with a to-be-engaged portion of the unit holder in such a manner as to restrict the connector from becoming detached when a force in a direction in which the connector is detached is applied to the connector in a state in which the connector is electrically connected to the heater. The unit holder includes an abutment portion with which the heater holder comes into contact when a force in a direction toward the roller is applied to the connector.Type: ApplicationFiled: March 20, 2023Publication date: October 5, 2023Inventors: TAKAMICHI MATSUO, MOTOYASU MURAMATSU
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Publication number: 20200249615Abstract: A drive transmitting member including: a gear portion that is formed of a first resin and has gear teeth; and a flange portion that is formed of a second resin, in which the flange portion includes a shaft portion that transmits driving force from the gear teeth to a drive transmitted member, and a rotation stopper (i) that stops rotation of the gear portion with respect to the flange portion at an outer periphery of the flange portion and (ii) that is larger than an external form of the shaft portion, so that the shaft portion and the rotation stopper are integrally molded in the flange portion, and the gear portion has a shape that covers the rotation stopper and is not overlapped with the shaft portion as viewed in an axial direction of the shaft portion.Type: ApplicationFiled: April 23, 2020Publication date: August 6, 2020Inventors: Shoichi Zensai, Takamichi Matsuo
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Patent number: 10671008Abstract: A drive transmitting member including: a gear portion that is formed of a first resin and has gear teeth; and a flange portion that is formed of a second resin, in which the flange portion includes a shaft portion that transmits driving force from the gear teeth to a drive transmitted member, and a rotation stopper (i) that stops rotation of the gear portion with respect to the flange portion at an outer periphery of the flange portion and (ii) that is larger than an external form of the shaft portion, so that the shaft portion and the rotation stopper are integrally molded in the flange portion, and the gear portion has a shape that covers the rotation stopper and is not overlapped with the shaft portion as viewed in an axial direction of the shaft portion.Type: GrantFiled: September 5, 2018Date of Patent: June 2, 2020Assignee: Canon Kabushiki KaishaInventors: Shoichi Zensai, Takamichi Matsuo
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Patent number: 10571858Abstract: An image forming apparatus including a cartridge and an apparatus main body to which the cartridge is detachably attachable is disclosed. The apparatus main body includes a driving force transmitting member, an output member, and a biasing member disposed between the output member and the driving force transmitting member. The driving force transmitting member is caused to rotate relative to the output member in the predetermined rotation by the biasing member, when an engagement between the driving force transmitting member and the driving force receiving member is released by a detachment of the cartridge from the apparatus main body.Type: GrantFiled: September 24, 2018Date of Patent: February 25, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Tomofumi Kawamura, Shoichi Zensai, Takamichi Matsuo
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Publication number: 20190094796Abstract: An image forming apparatus including a cartridge including a rotating member, the cartridge including a driving force receiving member, and an apparatus main body to which the cartridge is detachably attachable. The apparatus main body including a driving force transmitting member, an output member, and a biasing member disposed between the output member and the driving force transmitting member, wherein when the cartridge is detached from the apparatus main body and an engagement between the driving force transmitting member and the driving force receiving member is released, the driving force transmitting member is rotated relative to the output member in the predetermined rotation direction by biasing force of the biasing member.Type: ApplicationFiled: September 24, 2018Publication date: March 28, 2019Inventors: Tomofumi Kawamura, Shoichi Zensai, Takamichi Matsuo
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Publication number: 20190079446Abstract: A drive transmitting member including: a gear portion that is formed of a first resin and has gear teeth; and a flange portion that is formed of a second resin, in which the flange portion includes a shaft portion that transmits driving force from the gear teeth to a drive transmitted member, and a rotation stopper (i) that stops rotation of the gear portion with respect to the flange portion at an outer periphery of the flange portion and (ii) that is larger than an external form of the shaft portion, so that the shaft portion and the rotation stopper are integrally molded in the flange portion, and the gear portion has a shape that covers the rotation stopper and is not overlapped with the shaft portion as viewed in an axial direction of the shaft portion.Type: ApplicationFiled: September 5, 2018Publication date: March 14, 2019Inventors: Shoichi Zensai, Takamichi Matsuo
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Patent number: 9617091Abstract: Interlocked with an operation in which a feeding cassette is drawn out from a main body of a device, a restriction rib moves to a permissive position from a restrictive position, and interlocked with an operation in which the feeding cassette is inserted into the main body of the device, the restriction rib moves to the restrictive position from the permissive position.Type: GrantFiled: May 29, 2015Date of Patent: April 11, 2017Assignee: Canon Kabushiki KaishaInventors: Takamichi Matsuo, Koji Kawamura, Shoichi Zensai
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Patent number: 9454113Abstract: An image forming apparatus includes a sheet feed unit which feeds a sheet to an image forming unit forming an image on the sheet, a re-transport roller which reverses the sheet with a toner image fixed on the sheet and re-transports the sheet to the image forming unit, and a control unit which controls a sheet feed operation of the sheet feed unit for feeding the sheet. As the temperature of the re-transport roller sensed by the temperature sensing unit is decreased, the control unit retards the timing at which the sheet feed unit starts the sheet feed operation when a duplex image formation in which the image is formed on both sides of the sheet is performed after a one-side image formation is completed.Type: GrantFiled: October 28, 2014Date of Patent: September 27, 2016Assignee: Canon Kabushiki KaishaInventors: Takashi Kuwata, Kenji Abe, Hideki Ohta, Takamichi Matsuo, Youhei Suzuki, Takuro Mita
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Publication number: 20150344245Abstract: Interlocked with an operation in which a feeding cassette is drawn out from a main body of a device, a restriction rib moves to a permissive position from a restrictive position, and interlocked with an operation in which the feeding cassette is inserted into the main body of the device, the restriction rib moves to the restrictive position from the permissive position.Type: ApplicationFiled: May 29, 2015Publication date: December 3, 2015Inventors: Takamichi Matsuo, Koji Kawamura, Shoichi Zensai
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Patent number: 9081336Abstract: An image forming apparatus includes process cartridges forming a toner image on a sheet by using a toner containing a parting agent, an exposure device, an intermediate transfer belt, primary transfer rollers, secondary transfer rollers, a fixing roller and a pressing rotating member which fix the toner image formed on the sheet, a blower fan configured to adjust the temperature of the sheet on which the toner image is fixed, a pair of discharge rollers which conveys the sheet, the temperature of which is adjusted, and a controller which controls the blower fan such that the temperature of the sheet S after contact with the pair of discharge rollers rises to a melting point of the parting agent or higher, or the temperature of the sheet S before contact with the pair of discharge rollers falls to below the melting point of the parting agent.Type: GrantFiled: November 1, 2013Date of Patent: July 14, 2015Assignee: Canon Kabushiki KaishaInventors: Takamichi Matsuo, Hiroshi Kawaguchi
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Publication number: 20150043933Abstract: An image forming apparatus includes a sheet feed unit which feeds a sheet to an image forming unit forming an image on the sheet, a re-transport roller which reverses the sheet with a toner image fixed on the sheet and re-transports the sheet to the image forming unit, and a control unit which controls a sheet feed operation of the sheet feed unit for feeding the sheet. As the temperature of the re-transport roller sensed by the temperature sensing unit is decreased, the control unit retards the timing at which the sheet feed unit starts the sheet feed operation when a duplex image formation in which the image is formed on both sides of the sheet is performed after a one-side image formation is completed.Type: ApplicationFiled: October 28, 2014Publication date: February 12, 2015Inventors: Takashi Kuwata, Kenji Abe, Hideki Ohta, Takamichi Matsuo, Youhei Suzuki, Takuro Mita
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Patent number: 8948682Abstract: An image forming apparatus includes: a sheet feed unit that feeds a sheet to an image forming unit forming a toner image on the sheet; a fixing unit that fixes the toner image formed in the image forming unit to the sheet; and a control unit that controls the sheet feed unit, when starting duplex image formation for forming both sides of the sheet after an one-side image formation, the control unit retards a timing to cause the sheet feed unit to start the sheet feed operation as the number of sheet with an image formed on one side thereof in the one-side image formation is greater.Type: GrantFiled: March 14, 2013Date of Patent: February 3, 2015Assignee: Canon Kabushiki KaishaInventors: Kenji Abe, Hideki Ohta, Takashi Kuwata, Youhei Suzuki, Takamichi Matsuo, Toshiaki Sako
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Patent number: 8909124Abstract: An image forming apparatus includes a sheet feed unit which feeds a sheet to an image forming unit forming an image on the sheet, a re-transport roller which reverses the sheet with a toner image fixed on the sheet and re-transports the sheet to the image forming unit, and a control unit which controls a sheet feed operation of the sheet feed unit for feeding the sheet. As the temperature of the re-transport roller sensed by the temperature sensing unit is decreased, the control unit retards the timing at which the sheet feed unit starts the sheet feed operation when a duplex image formation in which the image is formed on both sides of the sheet is performed after a one-side image formation is completed.Type: GrantFiled: October 22, 2010Date of Patent: December 9, 2014Assignee: Canon Kabushiki KaishaInventors: Takashi Kuwata, Kenji Abe, Hideki Ohta, Takamichi Matsuo, Youhei Suzuki, Takuro Mita
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Publication number: 20140169850Abstract: The image forming apparatus includes process cartridges which form a toner image on a sheet by using a toner containing a parting agent, an exposure device, an intermediate transfer belt, primary transfer rollers, secondary transfer rollers, a fixing roller and a pressing rotating member which fix the toner image formed on the sheet, a blower fan which is capable of adjusting a temperature of the sheet on which the toner image is fixed, a pair of discharge rollers which conveys the sheet, a temperature of which is adjusted, and a controller which controls the blower fan such that the temperature of the sheet S after contact with the pair of discharge rollers rises to a melting point of the parting agent or higher, or the temperature of the sheet S before contact with the pair of discharge rollers falls to below the melting point of the parting agent.Type: ApplicationFiled: November 1, 2013Publication date: June 19, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Takamichi Matsuo, Hiroshi Kawaguchi
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Patent number: 8755734Abstract: An image forming apparatus includes: a sheet feed unit that feeds a sheet to an image forming unit forming a toner image on the sheet; a fixing unit that fixes the toner image formed in the image forming unit to the sheet; and a control unit that controls the sheet feed unit, when starting duplex image formation for forming both sides of the sheet after an one-side image formation, the control unit retards a timing to cause the sheet feed unit to start the sheet feed operation as the number of sheet with an image formed on one side thereof in the one-side image formation is greater.Type: GrantFiled: October 15, 2010Date of Patent: June 17, 2014Assignee: Canon Kabushiki KaishaInventors: Kenji Abe, Hideki Ohta, Takashi Kuwata, Youhei Suzuki, Takamichi Matsuo, Toshiaki Sako
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Patent number: 8417162Abstract: An image forming apparatus detects a plurality of times by changing velocity of a photosensitive drum, color misregistration generated when a developing roller separates from a photosensitive drum and calculates a relation between the velocity of the photosensitive drum and the color misregistration. A velocity of the photosensitive drum is changed and an arbitrary peripheral velocity difference is set between the photosensitive drum and the intermediate transfer belt based on the calculated result.Type: GrantFiled: March 4, 2010Date of Patent: April 9, 2013Assignee: Canon Kabushiki KaishaInventor: Takamichi Matsuo
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Publication number: 20110103808Abstract: An image forming apparatus includes: a sheet feed unit that feeds a sheet to an image forming unit forming a toner image on the sheet; a fixing unit that fixes the toner image formed in the image forming unit to the sheet; and a control unit that controls the sheet feed unit, when starting duplex image formation for forming both sides of the sheet after an one-side image formation, the control unit retards a timing to cause the sheet feed unit to start the sheet feed operation as the number of sheet with an image formed on one side thereof in the one-side image formation is greater.Type: ApplicationFiled: October 15, 2010Publication date: May 5, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Kenji Abe, Hideki Ohta, Takashi Kuwata, Youhei Suzuki, Takamichi Matsuo, Toshiaki Sako
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Publication number: 20110103809Abstract: An image forming apparatus includes a sheet feed unit which feeds a sheet to an image forming unit forming an image on the sheet; a re-transport roller which reverses the sheet with a toner image fixed on the sheet and re-transports the sheet to the image forming unit; and a control unit which controls a sheet feed operation of the sheet feed unit for feeding the sheet, wherein, as the temperature of the re-transport roller sensed by the temperature sensing unit is lower, the control unit retards a timing to cause the sheet feed unit to start the sheet feed operation when a duplex image formation in which the image is formed on both sides of the sheet is performed after a one-side image formation is completed.Type: ApplicationFiled: October 22, 2010Publication date: May 5, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Kuwata, Kenji Abe, Hideki Ohta, Takamichi Matsuo, Youhei Suzuki, Takuro Mita
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Publication number: 20100226677Abstract: An image forming apparatus detects a plurality of times by changing velocity of a photosensitive drum, color misregistration generated when a developing roller separates from a photosensitive drum and calculates a relation between the velocity of the photosensitive drum and the color misregistration. A velocity of the photosensitive drum is changed and an arbitrary peripheral velocity difference is set between the photosensitive drum and the intermediate transfer belt based on the calculated result.Type: ApplicationFiled: March 4, 2010Publication date: September 9, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Takamichi Matsuo