Patents by Inventor Junichi Terai
Junichi Terai 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: 20230391107Abstract: A supporting structure for a temperature sensor, and a drying device provided with the supporting structure. The supporting structure includes a front panel, a rear panel, a first supporting member having both ends in a longer-side direction of the first supporting member, and a second supporting member attachable to and detachable from the first supporting member. In the supporting structure, both ends of the first supporting member are removably supported by the front panel and the rear panel. In the supporting structure, the temperature sensor is disposed on the second supporting member, and the temperature sensor detects a surface temperature of a heating roller disposed between the front panel and the rear panel.Type: ApplicationFiled: May 30, 2023Publication date: December 7, 2023Applicant: Ricoh Company, Ltd.Inventors: Ken Onodera, Yasuyuki Horie, Yoshitaka Akiyama, Kenji Maruoka, Hiroshi Kato, Junichi Terai, Masaki Kitamura
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Publication number: 20230150282Abstract: A conveyor includes a conveyance roller to convey a conveyed object, a pair of roller supports opposing to each other and supporting both ends of the conveyance roller in an axial direction thereof, a position sensor to detect a position of the conveyed object, and a sensor support supporting the position sensor. Each of the pair of roller supports has an insertion hole into which the sensor support is inserted. The insertion hole determines a position of the sensor support in a direction intersecting an insertion direction of the sensor support. The sensor support includes a positioning portion determining the position of the sensor support with respect to at least one of the pair of roller supports. The positioning portion determines the position of the sensor support in the insertion direction, a direction opposite to the insertion direction, and a rotational direction about an axis along the insertion direction.Type: ApplicationFiled: October 6, 2022Publication date: May 18, 2023Inventor: Junichi TERAI
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Patent number: 10648560Abstract: A lock shaft and a shaft member (a plunger and a permanent magnet) of a magnetic locking device are arranged such that a moving direction thereof is orthogonal to a moving direction of a piston rod of a hydraulic actuator. In a parking lock released state, when the coil is not energized, the lock shaft and the shaft member are locked by an attracting force between the permanent magnet and a flange of a yoke so as not to move back from the piston rod, and, when the coil is energized, the attracting force between the permanent magnet and the flange is canceled, so that the lock shaft and the shaft member are allowed to move back from the piston rod.Type: GrantFiled: October 23, 2014Date of Patent: May 12, 2020Assignee: AISIN AW CO., LTD.Inventors: Takahiro Kokubu, Masaya Nakai, Tomonari Okamoto, Eikichi Kidokoro, Kenichi Naka, Tadamasa Takei, Junichi Terai
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Patent number: 9658576Abstract: A developing device includes a developer bearer, a developer regulator, a casing including an opposing face to oppose the developer bearer upstream from a developing range in a direction of rotation of the developer bearer, and first, second, and third seals. The first seal includes a first end secured to the casing and a second end to contact a latent image bearer upstream from the developing range in a direction of rotation of the latent image bearer. The second seal includes a first end secured to the opposing face of the casing, and a second end to contact the first seal upstream from the developing range. The third seal includes a first end secured to the opposing face of the casing, and a second end to contact developer on the developer bearer between the developer regulator and the developing range in the direction of rotation of the developer bearer.Type: GrantFiled: December 10, 2015Date of Patent: May 23, 2017Assignee: Ricoh Company, Ltd.Inventors: Hideki Kimura, Tadashi Ogawa, Hiroyuki Mabuchi, Junichi Terai, Hiroshi Kikuchi, Yukio Otome, Hiroaki Okamoto
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Patent number: 9529297Abstract: A developing device to develop a latent image on a rotatable image bearer includes an upstream developing roller disposed opposite the image bearer at a first developing position, and a downstream developing roller disposed adjacent to and downstream from the upstream developing roller in a direction of rotation of the image bearer, disposed opposite the image bearer at a second developing position. Each of the upstream developing roller and the downstream developing roller has a most approachable surface that approaches closest to the image bearer and a most withdrawn surface that withdraws farthest from the image bearer. In a state in which a reference surface point of the image bearer is disposed opposite the most approachable surface of the upstream developing roller at the first developing position, the reference surface point opposes the most withdrawn surface of the downstream developing roller at the second developing position.Type: GrantFiled: December 29, 2015Date of Patent: December 27, 2016Assignee: Ricoh Company, Ltd.Inventors: Hiroaki Okamoto, Tadashi Ogawa, Hiroyuki Mabuchi, Yukio Otome, Junichi Terai, Hideki Kimura, Hiroshi Kikuchi
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Patent number: 9507313Abstract: An image forming apparatus includes a removable unit to be removably installed in the image forming apparatus, having a unit-side opening, a connectable device having an apparatus-side opening to be connected to the unit-side opening to send developer from one of the removable unit and the connectable device to the other, a receptacle disposed below the unit-side opening and the apparatus-side opening to receive and store developer dropping from above, and a drawer unit to be retractably drawn out from the image forming apparatus. The receptacle is united with the drawer unit to be drawn out from the image forming apparatus together with the drawer unit.Type: GrantFiled: December 29, 2015Date of Patent: November 29, 2016Assignee: Ricoh Company, Ltd.Inventors: Junichi Terai, Tadashi Ogawa, Hiroyuki Mabuchi, Yukio Otome, Hideki Kimura, Hiroshi Kikuchi, Hiroaki Okamoto
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Publication number: 20160208916Abstract: A lock shaft and a shaft member (a plunger and a permanent magnet) of a magnetic locking device are arranged such that a moving direction thereof is orthogonal to a moving direction of a piston rod of a hydraulic actuator. In a parking lock released state, when the coil is not energized, the lock shaft and the shaft member are locked by an attracting force between the permanent magnet and a flange of a yoke so as not to move back from the piston rod, and, when the coil is energized, the attracting force between the permanent magnet and the flange is canceled, so that the lock shaft and the shaft member are allowed to move back from the piston rod.Type: ApplicationFiled: October 23, 2014Publication date: July 21, 2016Applicant: AISIN AW CO., LTD.Inventors: Takahiro KOKUBU, Masaya NAKAI, Tomonari OKAMOTO, Eikichi KIDOKORO, Kenichi NAKA, Tadamasa TAKEI, Junichi TERAI
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Patent number: 9395652Abstract: A developing unit includes a developer bearer to bear developer on a surface thereof, first and second developer conveyors each having a spiral blade mounted on a rotary shaft thereof parallel to a rotary axis of the developer bearer to convey developer in opposite directions to each other. A developer drain hole is provided at a given height in a side wall of a second developer conveyance channel to face a communication opening across the second developer conveyor. The first developer conveyor rotates in a direction with its spiral blade rising between the rotary shaft of the first developer conveyor and the communication opening. Rotational phases of the first developer conveyor and the second developer conveyor are fixed and synchronized with each other to weaken momentum of developer flow generated by the first developer conveyor toward the developer drain hole via the second developer conveyor.Type: GrantFiled: September 3, 2015Date of Patent: July 19, 2016Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Kikuchi, Tadashi Ogawa, Hiroyuki Mabuchi, Junichi Terai, Hideki Kimura, Yukio Otome, Hiroaki Okamoto, Kazunori Suzuki
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Publication number: 20160202660Abstract: An image forming apparatus includes a removable unit to be removably installed in the image forming apparatus, having a unit-side opening, a connectable device having an apparatus-side opening to be connected to the unit-side opening to send developer from one of the removable unit and the connectable device to the other, a receptacle disposed below the unit-side opening and the apparatus-side opening to receive and store developer dropping from above, and a drawer unit to be retractably drawn out from the image forming apparatus. The receptacle is united with the drawer unit to be drawn out from the image forming apparatus together with the drawer unit.Type: ApplicationFiled: December 29, 2015Publication date: July 14, 2016Inventors: Junichi TERAI, Tadashi OGAWA, Hiroyuki MABUCHI, Yukio OTOME, Hideki KIMURA, Hiroshi KIKUCHI, Hiroaki OKAMOTO
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Publication number: 20160202630Abstract: A developing device to develop a latent image on a rotatable image bearer includes an upstream developing roller disposed opposite the image bearer at a first developing position, and a downstream developing roller disposed adjacent to and downstream from the upstream developing roller in a direction of rotation of the image bearer, disposed opposite the image bearer at a second developing position. Each of the upstream developing roller and the downstream developing roller has a most approachable surface that approaches closest to the image bearer and a most withdrawn surface that withdraws farthest from the image bearer. In a state in which a reference surface point of the image bearer is disposed opposite the most approachable surface of the upstream developing roller at the first developing position, the reference surface point opposes the most withdrawn surface of the downstream developing roller at the second developing position.Type: ApplicationFiled: December 29, 2015Publication date: July 14, 2016Inventors: Hiroaki OKAMOTO, Tadashi OGAWA, Hiroyuki MABUCHI, Yukio OTOME, Junichi TERAI, Hideki KIMURA, Hiroshi KIKUCHI
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Publication number: 20160170329Abstract: A developing device includes a developer bearer, a developer regulator, a casing including an opposing face to oppose the developer bearer upstream from a developing range in a direction of rotation of the developer bearer, and first, second, and third seals. The first seal includes a first end secured to the casing and a second end to contact a latent image bearer upstream from the developing range in a direction of rotation of the latent image bearer. The second seal includes a first end secured to the opposing face of the casing, and a second end to contact the first seal upstream from the developing range. The third seal includes a first end secured to the opposing face of the casing, and a second end to contact developer on the developer bearer between the developer regulator and the developing range in the direction of rotation of the developer bearer.Type: ApplicationFiled: December 10, 2015Publication date: June 16, 2016Inventors: Hideki KIMURA, Tadashi OGAWA, Hiroyuki MABUCHI, Junichi TERAI, Hiroshi KIKUCHI, Yukio OTOME, Hiroaki OKAMOTO
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Publication number: 20160170356Abstract: A toner bottle driving device control method includes driving one of multiple toner bottle driving devices connected to a single toner container at a time, detecting abnormality of a toner bottle driving device being driven, determining a first abnormality phase of the toner bottle driving device being driven when a number of times the abnormality is detected exceeds a threshold, inhibiting the toner bottle driving device being in the first abnormality phase from driving until the first abnormality phase is resolved, driving a drivable toner bottle driving device containing a non-empty toner bottle when the toner bottle contained in the toner bottle driving device being driven is determined as empty, determining that the multiple toner bottle driving devices are in a second abnormality phase when each of the multiple toner bottle driving devices is determined as being in the first abnormality phase, and inhibiting image formation.Type: ApplicationFiled: December 15, 2015Publication date: June 16, 2016Inventors: Hiroyuki MABUCHI, Hiroaki OKAMOTO, Junichi TERAI, Yukio OTOME, Tadashi OGAWA, Hiroshi KIKUCHI, Hideki KIMURA, Katsuya AKIBA
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Patent number: 9360816Abstract: A toner bottle driving device control method includes driving one of multiple toner bottle driving devices connected to a single toner container at a time, detecting abnormality of a toner bottle driving device being driven, determining a first abnormality phase of the toner bottle driving device being driven when a number of times the abnormality is detected exceeds a threshold, inhibiting the toner bottle driving device being in the first abnormality phase from driving until the first abnormality phase is resolved, driving a drivable toner bottle driving device containing a non-empty toner bottle when the toner bottle contained in the toner bottle driving device being driven is determined as empty, determining that the multiple toner bottle driving devices are in a second abnormality phase when each of the multiple toner bottle driving devices is determined as being in the first abnormality phase, and inhibiting image formation.Type: GrantFiled: December 15, 2015Date of Patent: June 7, 2016Assignee: Ricoh Company, Ltd.Inventors: Hiroyuki Mabuchi, Hiroaki Okamoto, Junichi Terai, Yukio Otome, Tadashi Ogawa, Hiroshi Kikuchi, Hideki Kimura, Katsuya Akiba
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Patent number: 9323176Abstract: A powder supply device to supply powder to a supply destination includes a body, a single holder including multiple mounts on which multiple powder containers are removably mounted respectively, and a reservoir disposed in the body and below the single holder to store powder discharged from the multiple powder containers; and the single holder is removably attachable to the body of the powder supply device including the reservoir.Type: GrantFiled: July 23, 2015Date of Patent: April 26, 2016Assignee: Ricoh Company, Ltd.Inventors: Junichi Terai, Hiroyuki Mabuchi, Yukio Otome, Hiroshi Kikuchi, Hiroaki Okamoto, Akira Fujimori, Tadashi Ogawa, Hideki Kimura
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Publication number: 20160070208Abstract: A developing unit includes a developer bearer to bear developer on a surface thereof, first and second developer conveyors each having a spiral blade mounted on a rotary shaft thereof parallel to a rotary axis of the developer bearer to convey developer in opposite directions to each other. A developer drain hole is provided at a given height in a side wall of a second developer conveyance channel to face a communication opening across the second developer conveyor. The first developer conveyor rotates in a direction with its spiral blade rising between the rotary shaft of the first developer conveyor and the communication opening. Rotational phases of the first developer conveyor and the second developer conveyor are fixed and synchronized with each other to weaken momentum of developer flow generated by the first developer conveyor toward the developer drain hole via the second developer conveyor.Type: ApplicationFiled: September 3, 2015Publication date: March 10, 2016Applicant: RICOH COMPANY, LTD.Inventors: Hiroshi KIKUCHI, Tadashi OGAWA, Hiroyuki MABUCHI, Junichi TERAI, Hideki KIMURA, Yukio OTOME, Hiroaki OKAMOTO, Kazunori SUZUKI
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Publication number: 20160041498Abstract: A powder supply device to supply powder to a supply destination includes a body, a single holder including multiple mounts on which multiple powder containers are removably mounted respectively, and a reservoir disposed in the body and below the single holder to store powder discharged from the multiple powder containers; and the single holder is removably attachable to the body of the powder supply device including the reservoir.Type: ApplicationFiled: July 23, 2015Publication date: February 11, 2016Inventors: Junichi TERAI, Hiroyuki Mabuchi, Yukio Otome, Hiroshi Kikuchi, Hiroaki Okamoto, Akira Fujimori, Tadashi Ogawa, Hideki Kimura
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Patent number: 8554119Abstract: A developing system includes a first developer carrier to carry and supply two-component developer including toner and carrier to a latent image formed on an image bearer. A first magnetic field generator having plural first magnetic poles is rotatably installed in the first developer carrier and causes the two-component developer to put forth ears and conveys the two-component developer on the developer carrier. A cross-sectional center of the first magnetic field generator is deviated from that of the first developer carrier toward the image bearer by a prescribed length. A developer peel-off device including a second magnetic field generator is provided in the vicinity of the surface of the first developer carrier to peel off the developer not supplied to the image bearer and remaining on the surface of the first developer carrier.Type: GrantFiled: November 24, 2010Date of Patent: October 8, 2013Assignee: Ricoh Company, Ltd.Inventor: Junichi Terai
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Patent number: 8295737Abstract: A developing device capable of preventing scattered developer from being discharged and of stably supplying a developer to a latent image carrier by preventing the developer from being discharged despite that the amount of developer within the developing device is not increased, and an image forming apparatus including the developing device. When the bulk of the developer existing in the vicinity of the downstream end in the conveyance direction of the supply conveyance path exceeds the height level of the developer discharge port, the developer that has reached the height level of the developer discharge port is discharged to the outside of the developing device by the developer discharge port and developer conveyance path serving as the developer discharge device.Type: GrantFiled: January 25, 2008Date of Patent: October 23, 2012Assignee: Ricoh Company, Ltd.Inventors: Kiyonori Tsuda, Junichi Terai, Keiko Matsumoto, Kentaroh Tomita, Kohichi Utsunomiya
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Patent number: 8165508Abstract: A method for loading a replenishment developer into a developer accommodating container such that when the replenishment of the replenishment developer inside the loaded developer accommodating container is started, the developer composed of a toner and a carrier, or a toner is discharged from a developer discharge port of the developer accommodating container, wherein when a premix toner that is a replenishment developer composed of a replenishment toner and a replenishment carrier is loaded into a toner bottle serving as the developer accommodating container, the replenishment carrier is loaded and then the replenishment toner is loaded.Type: GrantFiled: January 28, 2008Date of Patent: April 24, 2012Assignee: Ricoh Company, Ltd.Inventors: Keiko Matsumoto, Emi Kita, Mugijirou Uno, Satoru Miyamoto, Junichi Terai, Maiko Koeda
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Patent number: 8145101Abstract: A developing device capable of conveying discharged developer to the outside of the device well by preventing developer from firmly adhering within a discharge conveyance path, as well as an image forming apparatus and a process cartridge having this developing device.Type: GrantFiled: June 9, 2008Date of Patent: March 27, 2012Assignee: Ricoh Company, Ltd.Inventors: Junichi Terai, Koichi Kato, Koichi Sakata, Maiko Koeda, Kentaroh Tomita, Kiyonori Tsuda