Katunori Ohshima

Title: Katunori Ohshima: Innovator in High-Density Recording Disc Technology

Introduction

Katunori Ohshima is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of high-density recording technology. His innovative approach has led to advancements in the manufacturing processes of recording discs.

Latest Patents

Ohshima holds a patent for a "Method for manufacturing a stamper for high-density recording discs." This patent describes a process where a glass stamper is created using an image reversal photolithography technique. The method involves scanning a positive type of photoresist film with a modulated light beam, followed by baking to cross-link molecular chains in the exposed areas. The unexposed portions are then removed using an alkaline solution, resulting in a photoresist pattern that serves as an etching mask. This process allows for the production of glass stampers capable of creating very high-capacity recording disks.

Career Highlights

Ohshima is associated with the Victor Company of Japan, Limited, where he has been instrumental in developing innovative technologies. His work has not only advanced the manufacturing of recording discs but has also contributed to the overall progress in the field of data storage.

Collaborations

Throughout his career, Ohshima has collaborated with notable colleagues, including Tetsuya Kondo and Kei Murata. These partnerships have fostered a creative environment that has led to significant technological advancements.

Conclusion

Katunori Ohshima's contributions to high-density recording disc technology exemplify the impact of innovative thinking in the field of data storage. His patent and work at the Victor Company of Japan, Limited highlight his role as a key figure in advancing recording technologies.