Company Filing History:
Years Active: 1991-2002
Title: Tatsuya Ishigaki: Innovator in Magnetic Disk Technology
Introduction
Tatsuya Ishigaki is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of magnetic disk technology, holding a total of 6 patents. His work focuses on improving the efficiency and performance of disk drives, which are essential components in various electronic devices.
Latest Patents
One of Ishigaki's latest patents is for a disc drive that features a 3.5-inch form factor housing and utilizes 2.5-inch form factor disk media. This innovative design allows the smaller disk media to rotate at high speeds while consuming less electric power and generating less heat. The inclusion of cooling fins around the disk media helps mitigate the heat generated during operation. Additionally, the smaller size of the disk media reduces torque loss during rotation and decreases the electric current required by the spindle motor.
Another notable patent involves an actuator arm that responds to magnetic flux to bias the arm to a stop position. In this magnetic disk apparatus, a magnetic member is mounted on a non-magnetic bobbin at a specific position to optimize the movement of the transducer head. The magnetic member is attracted by leakage flux in a voice coil motor (VCM), creating a rotational moment that biases the head toward a non-data portion of the data storage disk.
Career Highlights
Ishigaki's career has been marked by his dedication to advancing magnetic disk technology. He works at Hitachi, Ltd., a leading company in the electronics industry. His innovative designs and patents have contributed to the development of more efficient and reliable disk drives.
Collaborations
Throughout his career, Ishigaki has collaborated with notable colleagues, including Hiroshi Nishida and Atsushi Ito. These collaborations have fostered an environment of innovation and creativity, leading to advancements in their field.
Conclusion
Tatsuya Ishigaki is a key figure in the realm of magnetic disk technology, with a focus on enhancing performance and efficiency. His contributions through patents and collaborations continue to shape the future of disk drive technology.