Patents by Inventor Tatsuo Ogasawara
Tatsuo Ogasawara 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).
-
Patent number: 10353329Abstract: A fixing device includes a frame including a joint, a first rotary body and supported at the frame, a second rotary body, a spring with one end connected to the frame, a support arm connected to the joint, the second rotary body, and another end of the spring, a cam pivotably connected to one of the frame and the support arm, and a receiving member. The cam includes a first cam portion, and a second cam portion located at a different point from the first cam portion in the axial direction and having a radial distance from the pivot axis smaller than a radial distance of the first cam portion from the pivot axis. The receiving member includes a first receiving surface and a second receiving surface, the second receiving surface having a different surface height than the first receiving surface in a radial direction from the pivot axis.Type: GrantFiled: December 27, 2017Date of Patent: July 16, 2019Assignee: Brother Kogyo Kabushiki KaishaInventor: Tatsuo Ogasawara
-
Patent number: 10248054Abstract: A fuser includes: a rotating body; a roller configured to convey a sheet in a conveyance direction; a pair of bearings supporting the roller; one side frame made of a resin, supporting one of the pair of bearings; another side frame supporting the other of the pair of bearings, and arranged at a distance from the one side frame in the axial direction; and a center frame made of a metal, including a main-body portion arranged on an opposite side of the rotating body with respect to the roller. One end portion in the axial direction of the main-body portion includes a first fixing portion which is fixed to the one side frame, and a second fixing portion which is arranged on an upstream side of the first fixing portion in the conveyance direction, and is fixed to the one side frame.Type: GrantFiled: December 13, 2017Date of Patent: April 2, 2019Assignee: Brother Kogyo Kabushiki KaishaInventor: Tatsuo Ogasawara
-
Publication number: 20180196383Abstract: A fixing device includes a frame including a joint, a first rotary body and supported at the frame, a second rotary body, a spring with one end connected to the frame, a support arm connected to the joint, the second rotary body, and another end of the spring, a cam pivotably connected to one of the frame and the support arm, and a receiving member. The cam includes a first cam portion, and a second cam portion located at a different point from the first cam portion in the axial direction and having a radial distance from the pivot axis smaller than a radial distance of the first cam portion from the pivot axis. The receiving member includes a first receiving surface and a second receiving surface, the second receiving surface having a different surface height than the first receiving surface in a radial direction from the pivot axis.Type: ApplicationFiled: December 27, 2017Publication date: July 12, 2018Inventor: Tatsuo Ogasawara
-
Publication number: 20180164724Abstract: A fuser includes: a rotating body; a roller configured to convey a sheet in a conveyance direction; a pair of bearings supporting the roller; one side frame made of a resin, supporting one of the pair of bearings; another side frame supporting the other of the pair of bearings, and arranged at a distance from the one side frame in the axial direction; and a center frame made of a metal, including a main-body portion arranged on an opposite side of the rotating body with respect to the roller. One end portion in the axial direction of the main-body portion includes a first fixing portion which is fixed to the one side frame, and a second fixing portion which is arranged on an upstream side of the first fixing portion in the conveyance direction, and is fixed to the one side frame.Type: ApplicationFiled: December 13, 2017Publication date: June 14, 2018Inventor: Tatsuo Ogasawara
-
Publication number: 20180129158Abstract: An image forming apparatus includes: a heating unit; a pressure roller; a first frame supporting the heating unit; a second frame engaging the first frame; a first gear; a second gear; and a fixing member. The second frame supports a shaft portion of the pressure roller. The first gear is provided at one end of the shaft portion and rotatable with the pressure roller. The second gear engages the first gear and transmits a drive force to the first gear. The fixing member has a first portion engaging the shaft portion and a second portion engaging the second frame. At least a part of the first portion engages the shaft portion at a position on a downstream side of the shaft portion in a second direction in which the shaft portion receives a force upon transmission of the drive force.Type: ApplicationFiled: January 9, 2018Publication date: May 10, 2018Inventors: Hiroki Mori, Hiroshi Handa, Tatsuo Ogasawara, Takuji Matsuno
-
Patent number: 9946219Abstract: An image forming apparatus includes: a heating unit; a pressure roller; a first frame supporting the heating unit; a second frame engaging the first frame; a first gear; a second gear; and a fixing member. The second frame supports a shaft portion of the pressure roller. The first gear is provided at one end of the shaft portion and rotatable with the pressure roller. The second gear engages the first gear and transmits a drive force to the first gear. The fixing member has a first portion engaging the shaft portion and a second portion engaging the second frame. At least a part of the first portion engages the shaft portion at a position on a downstream side of the shaft portion in a second direction in which the shaft portion receives a force upon transmission of the drive force.Type: GrantFiled: January 28, 2016Date of Patent: April 17, 2018Assignee: Brother Kogyo Kabushiki KaishaInventors: Hiroki Mori, Hiroshi Handa, Tatsuo Ogasawara, Takuji Matsuno
-
Patent number: 9606502Abstract: A cartridge for accommodating developer includes a detected member configured to be detected by an external first sensor, and a drive-force transmission member configured to transmit a drive force to the detected member upon receipt of the drive force from outside. The detected member is configured to rotate in a first direction about a first rotational axis extending in an axial direction. The detected member includes: a receiving part configured to contact the drive-force transmission member to receive the drive force therefrom; and a first detected part. A portion of the first detected part and a portion of the receiving part are arranged at the same position as each other in the axial direction.Type: GrantFiled: January 9, 2015Date of Patent: March 28, 2017Assignee: Brother Kogyo Kabushiki KaishaInventors: Hiroki Mori, Tatsuo Ogasawara
-
Patent number: 9459555Abstract: An image forming apparatus includes: a body of the image forming apparatus; and a cartridge installable with respect to the body, wherein the cartridge includes a developer accommodating portion accommodating a developer; a developing portion supporting a developer holding member holding the developer thereon; and a shutter configured to be movable between an open position at which the shutter opens a communication port and a closed position at which the shutter closes the communication port. The body includes a detecting section detecting a state of the cartridge which changes as the cartridge is used, and a judging section judging whether or not a cartridge exchange timing for exchanging the cartridge has arrived, based on the state of the cartridge detected by the detecting section; and the shutter moves to the closed position under a condition that the judging section judges that the cartridge exchange timing has arrived.Type: GrantFiled: October 29, 2014Date of Patent: October 4, 2016Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yasumasa Fujii, Tatsuo Ogasawara, Hiroki Mori
-
Publication number: 20160231681Abstract: An image forming apparatus includes: a heating unit; a pressure roller; a first frame supporting the heating unit; a second frame engaging the first frame; a first gear; a second gear; and a fixing member. The second frame supports a shaft portion of the pressure roller. The first gear is provided at one end of the shaft portion and rotatable with the pressure roller. The second gear engages the first gear and transmits a drive force to the first gear. The fixing member has a first portion engaging the shaft portion and a second portion engaging the second frame. At least a part of the first portion engages the shaft portion at a position on a downstream side of the shaft portion in a second direction in which the shaft portion receives a force upon transmission of the drive force.Type: ApplicationFiled: January 28, 2016Publication date: August 11, 2016Inventors: Hiroki Mori, Hiroshi Handa, Tatsuo Ogasawara, Takuji Matsuno
-
Patent number: 9223250Abstract: A development apparatus is provided, including a case; a roller member configured to transport a developer; an agitating member configured to agitate the developer; and a movable transport member configured to transport the developer, which is agitated by the agitating member, toward the roller member. The case includes a first accommodating section which is formed with a filling port and which is arranged with the agitating member; and a second accommodating section which is arranged with the roller member and which is communicated with the first accommodating section. The transport member is arranged on a side of the roller member as compared with the agitating member; and the filling port is arranged so that the filling port is overlapped with a movement locus of the transport member as viewed in an axial direction lying along an axis of rotation of the agitating member.Type: GrantFiled: October 29, 2014Date of Patent: December 29, 2015Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroki Mori, Tatsuo Ogasawara
-
Publication number: 20150117873Abstract: A cartridge for accommodating developer includes a detected member configured to be detected by an external first sensor, and a drive-force transmission member configured to transmit a drive force to the detected member upon receipt of the drive force from outside. The detected member is configured to rotate in a first direction about a first rotational axis extending in an axial direction. The detected member includes: a receiving part configured to contact the drive-force transmission member to receive the drive force therefrom; and a first detected part. A portion of the first detected part and a portion of the receiving part are arranged at the same position as each other in the axial direction.Type: ApplicationFiled: January 9, 2015Publication date: April 30, 2015Inventors: Hiroki Mori, Tatsuo Ogasawara
-
Publication number: 20150117904Abstract: A development apparatus is provided, including a case; a roller member configured to transport a developer; an agitating member configured to agitate the developer; and a movable transport member configured to transport the developer, which is agitated by the agitating member, toward the roller member. The case includes a first accommodating section which is formed with a filling port and which is arranged with the agitating member; and a second accommodating section which is arranged with the roller member and which is communicated with the first accommodating section. The transport member is arranged on a side of the roller member as compared with the agitating member; and the filling port is arranged so that the filling port is overlapped with a movement locus of the transport member as viewed in an axial direction lying along an axis of rotation of the agitating member.Type: ApplicationFiled: October 29, 2014Publication date: April 30, 2015Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroki MORI, Tatsuo OGASAWARA
-
Publication number: 20150117879Abstract: An image forming apparatus includes: a body of the image forming apparatus; and a cartridge installable with respect to the body, wherein the cartridge includes a developer accommodating portion accommodating a developer; a developing portion supporting a developer holding member holding the developer thereon; and a shutter configured to be movable between an open position at which the shutter opens a communication port and a close position at which the shutter closes the communication port. The body includes a detecting section detecting a state of the cartridge which changes as the cartridge is used, and a judging section judging whether or not a cartridge exchange timing for exchanging the cartridge has arrived, based on the state of the cartridge detected by the detecting section; and the shutter moves to the close position under a condition that the judging section judges that the cartridge exchange timing has arrived.Type: ApplicationFiled: October 29, 2014Publication date: April 30, 2015Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yasumasa FUJII, Tatsuo OGASAWARA, Hiroki MORI
-
Publication number: 20140171802Abstract: An ultrasound diagnostic apparatus includes an ultrasound probe with transducers, memory storing probe identification information and binary state generation unit generating a binary electrical state corresponding to a probe identifier, probe identifier conversion unit converting the electrical state into the probe identifier, read unit reading the probe identification information from the memory, determination unit determining consistency between the probe identifier after conversion and the probe identification information read from the memory, and warning output unit outputting a predetermined warning if the probe identifier is inconsistent with the probe identification information.Type: ApplicationFiled: February 25, 2014Publication date: June 19, 2014Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha ToshibaInventors: Koji KUROIWA, Tatsuo Ogasawara, Kazuhito Nakata, Gen Nagano, Kenichi Unayama, Takeshi Fukasawa, Fumio Mochizuki
-
Publication number: 20130245451Abstract: An ultrasonic probe according to an embodiment includes a receiving unit and a light emitting unit. The receiving unit receives input operation related to transmission and reception of ultrasonic waves performed by a piezoelectric vibrator transmitting and receiving ultrasonic waves under the control of an apparatus body. The light emitting unit emits light in a first light emission state when connected to the apparatus body and emits light in a second light emission state when the receiving unit receives input operation in a state that the light emitting unit is connected to the apparatus body.Type: ApplicationFiled: March 13, 2013Publication date: September 19, 2013Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha ToshibaInventors: Fumio Mochizuki, Tatsuo Ogasawara, Kazuhito Nakata, Kenichi Unayama, Gen Nagano, Takeshi Fukasawa, Koji Kuroiwa
-
Patent number: 5397539Abstract: A plurality of cartridges are set to a cartridge standby section. Each cartridge has a specimen tub, a dilution tub and three reaction tubs, and a specimen is placed in the specimen tub in advance. A specimen dispensing unit first distributes the specimen from the specimen tub to three reaction tubs of the same cartridge. Thereafter the cartridges are successively transported to a first reagent dispensing section, a first reaction path, a second dispensing section, a second reaction path, an unreacted component removing section, a luminescent reagent dispensing section and a hydrogen peroxide dispensing section in the stated order. Examination processes including reagent dispensing and unreacted component removal are carried out simultaneously for the three reaction tubs of each cartridge. Finally, reaction mixtures are subjected to photometry in a photometric section.Type: GrantFiled: April 20, 1993Date of Patent: March 14, 1995Assignee: Toray Industries, Inc.Inventors: Mutsumi Hayashi, Tatsuo Ogasawara, Yayoi Mizutani, Nobuyuki Kuriyama
-
Patent number: D594899Type: GrantFiled: February 11, 2008Date of Patent: June 23, 2009Assignee: Brother Industries, Ltd.Inventors: Tatsuo Ogasawara, Yasuo Fukamachi, Fumio Morita
-
Patent number: D594900Type: GrantFiled: February 11, 2008Date of Patent: June 23, 2009Assignee: Brother Industries, Ltd.Inventors: Tatsuo Ogasawara, Yasuo Fukamachi
-
Patent number: D601184Type: GrantFiled: February 11, 2008Date of Patent: September 29, 2009Assignee: Brother Industries, Ltd.Inventors: Tatsuo Ogasawara, Yasuo Fukamachi, Fumio Morita, Satoru Ishikawa, Hirofumi Sato, Satoru Hattori
-
Patent number: D718380Type: GrantFiled: March 28, 2013Date of Patent: November 25, 2014Assignee: Brother Industries, Ltd.Inventors: Hiroki Mori, Yasumasa Fujii, Tatsuo Ogasawara