Patents by Inventor Yasuhiro Mita
Yasuhiro Mita 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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Patent number: 7480982Abstract: Embodiments of the invention relate to techniques to remove a defective head gimbal assembly (HGA) from a head stack assembly and replace the defective HGA with a good one without allowing any good HGAs to be damaged. In one embodiment, a volatile alcohol solvent is moved by gravity from a holder included in a reworking tool provided for a reworking jig to a shearing edge of a cartridge type edge mounted in the holder. The alcohol solvent is thereby deposited on the shearing edge in a drop-like shape through surface tension. The cartridge type edge is made to slide on a surface of an actuator arm and is inserted in a gap between contacting surfaces of a mount plate and the actuator arm. This assigns the drop-like alcohol solvent a function as a lubricant. Possible vibration can therefore be prevented from being transmitted through a carriage to other HGAs.Type: GrantFiled: October 18, 2005Date of Patent: January 27, 2009Assignee: Hitachi GLobal Storage Technologies Netherlands B.V.Inventors: Junichi Hosaka, Yasuhiro Mita, Katsuo Tsubaki
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Patent number: 7168154Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: GrantFiled: October 13, 2004Date of Patent: January 30, 2007Assignee: Hitachi Global Storage Technologies Netherlands BVInventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Patent number: 7137188Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: GrantFiled: October 13, 2004Date of Patent: November 21, 2006Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Patent number: 7137189Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: GrantFiled: October 13, 2004Date of Patent: November 21, 2006Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Publication number: 20060085970Abstract: Embodiments of the invention relate to techniques to remove a defective head gimbal assembly (HGA) from a head stack assembly and replace the defective HGA with a good one without allowing any good HGAs to be damaged. In one embodiment, a volatile alcohol solvent is moved by gravity from a holder included in a reworking tool provided for a reworking jig to a shearing edge of a cartridge type edge mounted in the holder. The alcohol solvent is thereby deposited on the shearing edge in a drop-like shape through surface tension. The cartridge type edge is, in this condition, made to slide on a surface of an actuator arm and is thereby inserted in a gap between contacting surfaces of a base plate of a mount plate and the actuator arm. This assigns the drop-like alcohol solvent a function as a lubricant. Possible vibration can therefore be prevented from being transmitted through a carriage to other HGAs.Type: ApplicationFiled: October 18, 2005Publication date: April 27, 2006Applicant: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Junichi Hosaka, Yasuhiro Mita, Katsuo Tsubaki
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Patent number: 6989969Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: GrantFiled: October 13, 2004Date of Patent: January 24, 2006Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Patent number: 6985335Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: GrantFiled: October 13, 2004Date of Patent: January 10, 2006Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Publication number: 20050078415Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: ApplicationFiled: October 13, 2004Publication date: April 14, 2005Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Patent number: 6879465Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: GrantFiled: June 11, 2003Date of Patent: April 12, 2005Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Patent number: 6871392Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: GrantFiled: September 26, 2002Date of Patent: March 29, 2005Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Publication number: 20050063096Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: ApplicationFiled: October 13, 2004Publication date: March 24, 2005Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Publication number: 20050047009Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: ApplicationFiled: October 13, 2004Publication date: March 3, 2005Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Publication number: 20050047020Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: ApplicationFiled: October 13, 2004Publication date: March 3, 2005Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Publication number: 20050047022Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: ApplicationFiled: October 13, 2004Publication date: March 3, 2005Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Patent number: 6848167Abstract: A head gimbal assembly, which is a component of a hard disk drive, has a bending portion that has elasticity and is bent at a predetermined angle under an unloaded condition, and a slider is bonded to a holding portion thereof by mounting the head gimbal assembly on a bonding jig in a state in which the bending portion is stretched. When the head gimbal assembly is separated from the bonding jig after bonding, the bending portion is not restored freely, so that the head gimbal assembly is caught by the bonding jig during the separating process and a locked state is sometimes established.Type: GrantFiled: June 12, 2001Date of Patent: February 1, 2005Assignee: International Business Machines CorporationInventors: Yasuhiro Mita, Kohichiroh Naka, Takuya Satoh, Tatsumi Tsuchiya, Tatsushi Yoshida
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Patent number: 6742694Abstract: An apparatus joins bonding pads of a slider and lead pads of lead wires in a head gimbals assembly to improve efficiency, downsizing, and maintenance of solder-ball disposing devices, and solder-ball reflow devices for reflowing solder balls. The solder-ball disposing apparatus discharges solder balls from solder-ball discharging holes of a solder-ball feeder unit which are evacuated by a suction pad. An environmental space and an inert-gas supply portion for forming inactive atmosphere are formed on a table to eliminate an inert-gas supply unit from an optical unit, so that converged laser beams are directly radiated onto the solder balls.Type: GrantFiled: February 13, 2002Date of Patent: June 1, 2004Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Takuya Satoh, Tatsumi Tsuchiya, Yasuhiro Mita, Lan Shi, Hiroyoshi Yokome, Tatsushi Yoshida, Surya Pattanaik
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Publication number: 20030188887Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: ApplicationFiled: June 11, 2003Publication date: October 9, 2003Inventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Publication number: 20030070834Abstract: An integrated lead suspension includes a solder ball that is placed between a lead wiring pad provided on a flexure of the suspension, and a bonding pad provided on a slider of a head gimbal section. The lead wiring pad and bonding pad are soldered by melting the solder ball. As a result, there is provided a recessed section into which a solder ball is placed by way of surface raised sections, using gravitational force, in the vicinity of the center line of the surface of the lead wiring pad. In this way the position of the solder ball is not displaced from the center line when a bonding pad and lead wiring pad are connected by means of a solder ball.Type: ApplicationFiled: September 26, 2002Publication date: April 17, 2003Applicant: International Business Machines CorporationInventors: Tatsumi Tsuchiya, Yuhsuke Matsumoto, Takaaki Murokawa, Naoki Fujii, Takuya Satoh, Yasuhiro Mita, Hiroyasu Tsuchida, Yoshio Uematsu
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Patent number: 6493189Abstract: A head gimbal assembly is provided with a slider that flies above the surface of a disk, and a head for reading/writing data from/onto the surface of the disk. One or more conductive wires are connected to the head and are used to transmit data. A load beam supports the wire(s) thereon and holds the head/slider near a front end of the load beam. Each wire forms a wire loop between the head connecting point edge and the wire fixing point. A predetermined portion of each wire loop is pressed from above on the surface of the load beam, and then pushed toward the head connecting point edge, thereby plastically deforming a section between the head connecting point edge and the predetermined portion of the wire loop.Type: GrantFiled: April 28, 2000Date of Patent: December 10, 2002Assignee: International Business Machines CorporationInventors: Kenji Itoh, Yasuhiro Mita, Masaaki Nanba, Tatsushi Yoshida
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Publication number: 20020113115Abstract: An apparatus joins bonding pads of a slider and lead pads of lead wires in a head gimbals assembly to improve efficiency, downsizing, and maintenance of solder-ball disposing devices, and solder-ball reflow devices for reflowing solder balls. The solder-ball disposing apparatus discharges solder balls from solder-ball discharging holes of a solder-ball feeder unit which are evacuated by a suction pad. An environmental space and an inert-gas supply portion for forming inactive atmosphere are formed on a table to eliminate an inert-gas supply unit from an optical unit, so that converged laser beams are directly radiated onto the solder balls.Type: ApplicationFiled: February 13, 2002Publication date: August 22, 2002Applicant: International Business Machines CorporationInventors: Takuya Satoh, Tatsumi Tsuchiya, Yasuhiro Mita, Lan Shi, Hiroyoshi Yokome, Tatsushi Yoshida, Surya Pattanaik