Jun Fumioka

Title: Innovations of Jun Fumioka in Magnetic Recording Technology

Introduction

Jun Fumioka is a notable inventor based in Hadano, Japan. He has made significant contributions to the field of magnetic recording technology, holding a total of 7 patents. His work focuses on enhancing the performance and efficiency of magnetic recording media and systems.

Latest Patents

Fumioka's latest patents include advancements in magnetic recording media and systems. One of his notable inventions is a magnetic recording medium that features a non-magnetic disk substrate with a magnetic film. This medium is designed to achieve a surface average roughness factor Ra(r) ranging from 0.3 nm to 3 nm, with an orientation ratio of coercivity between 0.1 and 0.7. This innovation allows for a magnetic recording apparatus where the magnetic head can fly at a low position, enabling high-density recording.

Another significant patent involves a magnetic recording medium that consists of a non-magnetic substrate and a magnetic layer. The product of the residual flux density Br.sub.1 and the thickness of the magnetic layer is specified to be between 5 G.mu.m and 180 G.mu.m. Additionally, the average roughness factor Ra of the magnetic layer is maintained between 0.3 nm and 1.9 nm, ensuring optimal performance in recording applications.

Career Highlights

Jun Fumioka is currently employed at Hitachi, Ltd., where he continues to innovate in the field of magnetic recording technology. His work has been instrumental in advancing the capabilities of magnetic recording systems, making them more efficient and effective.

Collaborations

Fumioka has collaborated with several talented individuals in his field, including Yoshiki Kato and Yasushi Ito. These collaborations have contributed to the development of cutting-edge technologies in magnetic recording.

Conclusion

Jun Fumioka's contributions to magnetic recording technology exemplify the importance of innovation in enhancing data storage solutions. His patents reflect a commitment to advancing the field and improving the performance of magnetic recording systems.