Takashi Kajiyama

Title: The Innovative Contributions of Takashi Kajiyama

Introduction

Takashi Kajiyama is a prominent inventor based in Shizuoka, Japan. He has made significant contributions to the field of magnetic recording media, holding a total of 4 patents. His work focuses on enhancing the properties and production processes of magnetic recording materials.

Latest Patents

Kajiyama's latest patents include a groundbreaking process for producing magnetic recording media. This invention involves creating a magnetic recording medium with excellent magnetic properties and a uniform recording envelope, particularly suitable for high-density recording. The process entails packing a magnetic substance into the micro pores of an anodic oxide film formed on an aluminum substrate. This anodic oxide film is produced through an anodic oxidation treatment, achieving a thickness of at least 4 micrometers. The innovation is further enhanced by immersing the anodized aluminum substrate in an acid or alkali bath to enlarge the micro pores, allowing for better deposition of the magnetic substance.

Another notable patent involves the development of an aluminum substrate for magnetic recording media. This substrate is composed of an aluminum alloy plate containing 2 to 6% by weight magnesium, with limited impurities. The surface features an anodic oxidation film thicker than 3 micrometers, formed by a chromic acid process. This design significantly reduces the occurrence of black spot defects and prevents crack formation when the substrate is heated to high temperatures.

Career Highlights

Kajiyama is currently employed at Nippon Light Metal Company, Ltd., where he continues to innovate in the field of magnetic materials. His expertise and dedication have positioned him as a key figure in the advancement of magnetic recording technologies.

Collaborations

Throughout his career, Kajiyama has collaborated with notable colleagues, including Yasuo Oka and Koichi Yoshida. These partnerships have contributed to the successful development of his patents and innovations.

Conclusion

Takashi Kajiyama's contributions to the field of magnetic recording media are noteworthy and impactful. His innovative patents and ongoing work at Nippon Light Metal Company, Ltd. continue to shape the future of magnetic materials.