Satoru Yoshimura

Title: Satoru Yoshimura: Innovator in Magnetic Recording Technology

Introduction

Satoru Yoshimura is a notable inventor based in Sendai, Japan. He has made significant contributions to the field of magnetic recording technology, holding two patents that showcase his innovative approach to enhancing magnetic recording media.

Latest Patents

Yoshimura's latest patents include a magnetic recording medium with a chromium underfilm. This invention features a high normalized coercive force and superior thermal stability. The magnetic recording medium comprises a non-magnetic base material and a ferromagnetic metal layer made of a cobalt-based alloy. This layer is formed on top of the base material, with a metal underlayer positioned in between. The medium displays a coercive force (Hc) of at least 2000 Oe and an anisotropic magnetic field (Hk) of at least 10,000 Oe. Furthermore, the preferred fabrication process occurs in a film fabrication chamber with an ultimate vacuum at the 10 Torr level. This magnetic recording medium is ideally suited for applications in hard disks, floppy disks, and magnetic tapes.

Another patent focuses on a magnetic recording medium capable of suppressing the effects of thermal agitation. This invention reduces the average grain diameter and the standard deviation of magnetic crystal grains in a ferromagnetic metal film without altering the film thickness of the metal underlayer or the ferromagnetic metal layer. The medium includes a ferromagnetic metal layer of a cobalt-based alloy formed on a base material, with a metal underlayer containing chromium as a major constituent. A seed layer made of tungsten is provided between the base material and the metal underlayer, and this seed layer is an islands-type film.

Career Highlights

Throughout his career, Satoru Yoshimura has worked with various companies, including Anelva Corporation. His work has significantly impacted the development of magnetic recording technologies, leading to advancements in data storage solutions.

Collaborations

Yoshimura has collaborated with notable individuals in his field, including Migaku Takahashi and David Djulianto Djayaprawira. These collaborations have contributed to the innovative advancements in magnetic recording technology.

Conclusion

Satoru Yoshimura's contributions to magnetic recording technology through his patents demonstrate his expertise and innovative spirit. His work continues to influence the field, paving the way for future advancements in data storage