Haruo Kunitomo

Title: Haruo Kunitomo: Innovator in Optical Recording Technology

Introduction

Haruo Kunitomo is a prominent inventor based in Okayama, Japan, known for his significant contributions to optical recording technology. With a total of eight patents to his name, Kunitomo has made remarkable advancements in the field, particularly in the development of optical recording media.

Latest Patents

Kunitomo's latest patents include an innovative optical recording medium and a production method for the same. This invention relates to an optical recording medium that features a protective layer and a phase-change recording layer on a substrate. The protective layer is composed of a metallic oxysulfide and is formed through sputtering using a target made of the same material. Another notable patent is for an optical phase-change disc, which consists of a substrate with a spiral groove or concentric grooves designed to guide a focused light beam. This disc includes a layer structure that comprises a recording layer and protective layers sandwiching the recording layer. The grooves are designed with wobble to record absolute time information (ATIP) or address information (ADIP).

Career Highlights

Kunitomo has had a distinguished career at Mitsubishi Chemical Corporation, where he has been instrumental in advancing optical recording technologies. His work has not only contributed to the company's reputation but has also pushed the boundaries of what is possible in optical media.

Collaborations

Throughout his career, Kunitomo has collaborated with notable colleagues, including Takashi Ohno and Michikazu Horie. These collaborations have fostered innovation and have led to the successful development of various technologies in the optical recording field.

Conclusion

Haruo Kunitomo's contributions to optical recording technology have established him as a key figure in the industry. His innovative patents and collaborations continue to influence the future of optical media.