Company Filing History:
Years Active: 2008-2009
Title: Yuji Ishima: Innovator in Magnetic Disk Drive Technology
Introduction
Yuji Ishima is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of magnetic disk drive technology, holding a total of 2 patents. His work focuses on enhancing the performance and efficiency of magnetic disk drives.
Latest Patents
One of Yuji Ishima's latest patents is for a magnetic disk drive with line contact. This invention promotes higher densities, greater capacities, and a reduction in size while relaxing component accuracy requirements. The design includes a magnetic disk receiving member and a magnetic disk holding member, allowing the magnetic disk to be rotatably held with the disk clamped between them. The receiving member makes line contact with the surface of the magnetic disk along a circumference formed around its rotational axis.
Another significant patent is for a bearing mechanism for spindle motors in magnetic disk drives. This invention addresses issues caused by increased viscosity of grease at low temperatures and wear from vibration. The design features a ball bearing with multiple balls arranged between an outer ring and an inner ring, filled with grease. A holder with a spring plate ensures that the balls are adequately pressurized, enhancing the reliability of the bearing mechanism.
Career Highlights
Yuji Ishima is currently employed at Hitachi Global Storage Technologies Netherlands B.V. His work at this company has allowed him to develop innovative solutions that improve the functionality of magnetic disk drives. His contributions have been instrumental in advancing the technology used in data storage devices.
Collaborations
Yuji has collaborated with notable coworkers, including Kazuyoshi Hanada and Masaru Muranishi. Their combined expertise has contributed to the successful development of various technologies in the field of magnetic storage.
Conclusion
Yuji Ishima's innovative work in magnetic disk drive technology has led to significant advancements in the industry. His patents reflect a commitment to improving data storage solutions, making him a key figure in the field.