Patents by Inventor Shuji Yokoyama
Shuji Yokoyama 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: 20120308278Abstract: According to one embodiment, a fuser includes a fixing belt including a conductive layer, an induction-current generating section to electromagnetically induction-heat the conductive layer, an opposed section to form a nip in cooperation with the fixing belt, an auxiliary heat generating section electromagnetically induction-heated by the induction-current generating section, and a moving section to move the auxiliary heat generating section with respect to the fixing belt.Type: ApplicationFiled: May 29, 2012Publication date: December 6, 2012Applicants: Toshiba Tec Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventors: Kazuhiko KIKUCHI, Masahiro Doi, Toshihiro Sone, Shuji Yokoyama, Tadashi Noguchi, Satoshi Kinouchi, Ryota Saeki, Shigeru Fujiwara, Shoko Shimmura, Kazutoshi Takahashi, Takafumi Amano
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Publication number: 20120263509Abstract: A fuser includes a fixing belt that is endless and includes a heat generating layer and circulates, an end restraining member that supports an end of the fixing belt, a heat generating source that is disposed around the fixing belt and heats the heat generating layer, an opposite part that contacts an outer peripheral surface of the fixing belt, a pressure part that is disposed inside the fixing belt and located at a position opposite to the opposite part, and presses the fixing belt to the opposite part side to form a nip between the fixing belt and the opposite part, and a rotation part that contacts an inner peripheral surface of the fixing belt at a position opposite to the heat generating source.Type: ApplicationFiled: February 14, 2012Publication date: October 18, 2012Applicants: Toshiba Tec Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventor: Shuji YOKOYAMA
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Publication number: 20120263510Abstract: A fuser includes: a heat generating section including a heat generating layer and configured to rotationally travel; an induction-current generating section provided around the exterior of the heat generating section and including an exciting coil and an external ferrite core that covers the outer circumference of the exciting coil; an opposing section set in contact with the outer circumferential surface of the heat generating section; and an internal ferrite core arranged inside of the heat generating section in a position opposed to the exciting coil, a first center angle connecting both edges of the internal ferrite core and a rotation center of the heat generating section being larger than a second center angle connecting both edges of the external ferrite core and the rotation center of the heat generating section.Type: ApplicationFiled: March 27, 2012Publication date: October 18, 2012Applicants: TOSHIBA TEC KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBAInventors: Katsutoshi Mita, Kazuhiko Kikuchi, Masahiro Doi, Shuji Yokoyama, Toshihiro Sone
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Publication number: 20120003019Abstract: According to one embodiment, a fixing device includes: an image-side rotating section to come into contact with an unfixed image on a recording medium; a pressing section to form a nip between the pressing section and the image-side rotating section; a pressing adjusting section to adjust pressing force between the image-side rotating section and the pressing section; and a peeling plate to move to a position during jam treatment if the pressing force is pressing force during the jam treatment and peel the recording medium off the image-side rotating section.Type: ApplicationFiled: June 15, 2011Publication date: January 5, 2012Applicants: Toshiba Tec Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventor: Shuji YOKOYAMA
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Patent number: 8050611Abstract: Plural main cores and plural sub-cores are arranged spaced apart from each other along a direction orthogonal to a rotating direction of a heat belt. The plural main cores are opposed to a first area where a sheet having first width in the heat belt passes. The plural sub-cores are opposed to second areas that are areas excluding the first area in an area where the sheet having second width larger than the first width in the heat belt passes. The plural sub-cores have thickness in the direction orthogonal to the rotating direction of the heat belt smaller than the thickness of the plural main cores.Type: GrantFiled: April 5, 2010Date of Patent: November 1, 2011Assignees: Kabushiki Kaisha Toshiba, Toshiba TEC Kabushiki KaishaInventors: Satoshi Kinouchi, Kazuhiko Kikuchi, Hiroshi Nakayama, Hiroaki Yamauchi, Shuji Yokoyama
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Publication number: 20110222925Abstract: According to one embodiment, fixing device includes a first heat roller to generate heat, a second heat roller to generate heat and fix a toner image formed on a recording medium passing through a nip between the first heat roller and the second heat roller, and a unitary heating unit provided to heat the first heat roller and the second heat roller, the heating unit being provided with a passage to pass the recording medium in a position opposing the nip.Type: ApplicationFiled: January 27, 2011Publication date: September 15, 2011Applicants: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventor: Shuji YOKOYAMA
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Publication number: 20110217096Abstract: A fixing device includes a fixing belt comprising a first metal heat generating layer, a pressurizing unit which faces an outer circumference of the fixing belt, an induced current generating coil located within a hollow part of the fixing belt, a nip forming member which pressurizes the fixing belt to the pressurizing unit, and an auxiliary heat generating member located in a periphery of the fixing belt and comprising a second metal heat generating layer.Type: ApplicationFiled: February 23, 2011Publication date: September 8, 2011Applicants: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Kazuhiko KIKUCHI, Satoshi Kinouchi, Shuji Yokoyama, Hiroyuki Kunugi, Hiroshi Nakayama, Yoshiaki Okano, Setsuo Takada, Toshihiro Sone
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Publication number: 20110135358Abstract: A fixing device includes a fixing belt comprising a first metal heat generating layer; a pressure section facing an outer periphery of the fixing belt; an induction current generating coil situated near a peripheral surface of the fixing belt; a nip forming member situated inside the fixing belt and applying pressure to the fixing belt toward the pressure section; and an auxiliary heat generating member situated inside the fixing belt, comprising a second metal heat generating layer, extending to a position facing the induction current generating coil, and comprising a projecting portion contacting the fixing belt.Type: ApplicationFiled: November 22, 2010Publication date: June 9, 2011Applicants: Kabushiki Kaisha Toshiba, Toshiba TEC Kabushiki KaishaInventors: Kazuhiko Kikuchi, Satoshi Kinouchi, Shuji Yokoyama, Hiroyuki Kunugi, Hiroshi Nakayama, Yoshiaki Okano, Setsuo Takada, Toshihiro Sone
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Publication number: 20110135359Abstract: According to one embodiment, a fixing device includes: a fixing belt comprising a first metal heat generating layer; a pressing unit opposing to the outer circumference of the fixing belt; an induction-current generating coil presented near the circumferential surface of the fixing belt; a nip forming member present on the inner side of the fixing belt and configured to press the fixing belt against the pressing unit; and an auxiliary heat generating member present in a heating region by the induction-current generating coil on the inner side of the fixing belt, having a second metal heat generating layer, and extending to the outer side of the heating region by the induction-current generating coil.Type: ApplicationFiled: November 22, 2010Publication date: June 9, 2011Applicants: Kabushiki Kaisha Toshiba, Toshiba TEC Kabushiki KaishaInventors: Kazuhiko KIKUCHI, Satoshi KINOUCHI, Shuji YOKOYAMA, Hiroyuki KUNUGI, Hiroshi NAKAYAMA, Yoshiaki OKANO, Setsuo TAKADA, Toshihiro SONE
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Publication number: 20110076043Abstract: A fixing device includes a belt that has an endless shape, a roller that forms a nip with the belt, a support member that supports the belt interposed between the support member and the roller, a coil that generates a magnetic field for inducing current in the belt, an auxiliary heat generation member that generates heat with the current induced by the magnetic field in the loop of the belt, and a temperature sensor that is opposed to the auxiliary heat generation member with the belt interposed between the element and the auxiliary heat generation member and detects the temperature of an outer peripheral surface of the belt.Type: ApplicationFiled: September 24, 2010Publication date: March 31, 2011Applicants: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Kazuhiko KIKUCHI, Satoshi Kinouchi, Shuji Yokoyama, Hiroyuki Kunugi, Hiroshi Nakayama, Yoshiaki Okano, Setsuo Takada, Toshihiro Sone
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Publication number: 20110070006Abstract: A temperature equalizing roller includes a metal pipe, a heat pipe that is located inside the metal pipe and has a thermal expansion coefficient higher than that of the metal pipe, and a joining layer. The joining layer lies between an outer peripheral surface of the heat pipe and an inner peripheral surface of the metal pipe, joins the outer peripheral surface of the heat pipe and the inner peripheral surface of the metal pipe, and has a higher thermal conductivity than a thermal conductivity of air.Type: ApplicationFiled: September 17, 2010Publication date: March 24, 2011Applicants: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Toshihiro Sone, Kazuhiko Kikuchi, Satoshi Kinouchi, Hiroshi Nakayama, Hiroyuki Kunugi, Setsuo Takada, Shuji Yokoyama, Yoshiaki Okano
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Patent number: 7902464Abstract: A printed circuit board (120) includes an insulating substrate (120a) on which conductive films (120b) are formed. Semiconductor devices (8) disposed external to the printed circuit board (120) have their leads (24a, 24b, 24c) connected to the conductive films. A flexible portion (30) is formed in the insulating substrate (120a) at a location near the location where the leads (24a, 24b, 24c) are connected to the conductive films (120b).Type: GrantFiled: June 1, 2009Date of Patent: March 8, 2011Assignee: Sansha Electric Manufacturing Company, LimitedInventors: Kenzo Danjo, Hideo Ishii, Masao Katooka, Shuji Yokoyama
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Publication number: 20110033215Abstract: According to one embodiment, a fuser includes a rotatable heating member having a plurality of holes formed on difference areas, which are not overlapped with each other and which are the difference between an area in the rotating direction where a sheet having a first width is in contact during the conveyance and an area in the rotating direction where a sheet having a second width, different from the first width, is in contact during the conveyance, and a rotatable pressing member that is brought into contact with the rotatable heating member and conveys the sheet as nipping the sheet with the rotatable heating member.Type: ApplicationFiled: July 8, 2010Publication date: February 10, 2011Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Shuji YOKOYAMA
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Patent number: 7858807Abstract: Disclosed is a commercially suitable method for producing a 1-substituted-5-acylimidazole compound. A 1-substituted-5-acylimidazole compound is produced with a high position selectivity by reacting an N-substituted amidine compound or a salt thereof with a ketone compound in the presence of a base.Type: GrantFiled: August 22, 2006Date of Patent: December 28, 2010Assignee: Ube Industries, Ltd.Inventors: Shigeyoshi Nishino, Shuji Yokoyama, Hiroyuki Oda, Yoji Omata, Shinya Takigawa
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Publication number: 20100322684Abstract: A fuser includes: a rotational member configured to rotate; a press member configured to press a recording medium at a nip between the rotational member; an induction-current generator configured to generate induction current in the rotational member; a heat insulator partially transparent to an infrared ray; an insulator driver configured to move the heat insulator to cover the press member; and a thermometer configured to receive the infrared ray emitted from the press member.Type: ApplicationFiled: June 16, 2010Publication date: December 23, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Kazuhiko KIKUCHI, Shuji YOKOYAMA, Hiroshi NAKAYAMA, Hiroaki YAMAUCHI, Satoshi KINOUCHI
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Publication number: 20100322655Abstract: A fuser includes: a belt member; plural rotational members configured to support the belt member; a press member configured to form a nip between the press member and the belt member; an induction-current generator configured to generate induction current in the belt member; and a controller configured to increase the induction current while a recording medium passes through the nip.Type: ApplicationFiled: June 17, 2010Publication date: December 23, 2010Applicants: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Kazuhiko KIKUCHI, Shuji YOKOYAMA, Hiroshi NAKAYAMA, Hiroaki YAMAUCHI, Satoshi KINOUCHI
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Publication number: 20100322654Abstract: A fuser includes: a rotational member configured to rotate; a press member configured to press a recording medium at a nip between the rotational member; an induction-current generator configured to generate induction current in the rotational member; and a controller configured to increase rotating speed of the rotational member after a trailing end of a preceding recording medium passes through the nip until a leading end of a following recording medium reaches the nip.Type: ApplicationFiled: June 17, 2010Publication date: December 23, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Kazuhiko KIKUCHI, Shuji YOKOYAMA, Hiroshi NAKAYAMA, Hiroaki YAMAUCHI, Satoshi KINOUCHI
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Publication number: 20100319899Abstract: In a first process of this method of manufacturing a heat sink, into a groove, formed in a base and both of whose side surfaces are provided with projections or concave portions and whose upper portion is open, from the groove open portion, there is fitted a pipe that has a diameter smaller than the gap between the edge portions of the open portion of the groove. Next, the pipe is pressed from above the open portion of the groove and the upper portion of the pipe is deformed so that it follows the plane of the open portion of the groove, and moreover both side portions of the pipe are deformed so that they follow along the inner surfaces of both side portions of the groove. By this second process, both side portions of the pipe are engaged with the projections or concave portions.Type: ApplicationFiled: June 8, 2010Publication date: December 23, 2010Inventors: Shuji YOKOYAMA, Goro Nakano
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Publication number: 20100322658Abstract: A fuser includes: a rotational member configured to rotate; a press member configured to form a nip between the press member and the rotational member; an induction-current generator configured to generate an induction current in the rotational member; and a controller configured to reduce a nip temperature of the nip when a leading end of a recording medium reaches the nip to be lower than a nip temperature when an image on the recording medium is fixed.Type: ApplicationFiled: June 17, 2010Publication date: December 23, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Kazuhiko KIKUCHI, Shuji YOKOYAMA, Hiroshi NAKAYAMA, Hiroaki YAMAUCHI, Satoshi KINOUCHI
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Publication number: 20100310266Abstract: Certain embodiments provide a fuser including: a heat roller; a press roller; a coil; an inverter; a driver; a mechanism configured to change a clearance of a gap between a coil and an outer circumferential surface of the heat roller; and a controller. The controller sends information indicating a first power level to the driver. The mechanism changes the clearance to a first distance. The controller sends information indicating a second power level larger than the first power level to the driver. The mechanism changes the clearance to a second distance larger than the first distance.Type: ApplicationFiled: June 4, 2010Publication date: December 9, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Hiroshi NAKAYAMA, Kazuhiko KIKUCHI, Satoshi KINOUCHI, Hiroaki YAMAUCHI, Shuji YOKOYAMA