Tokiharu Nakagawa

Title: Tokiharu Nakagawa: Innovator in Optical Disk Technology

Introduction

Tokiharu Nakagawa is a prominent inventor based in Hirakata, Japan. He has made significant contributions to the field of optical disk technology, holding 2 patents that showcase his innovative approach to molding apparatuses and methods.

Latest Patents

One of Nakagawa's latest patents is an "Optical disk molding apparatus and method." This invention aims to prevent damage to data formed on molded objects and to avoid quality deterioration. The apparatus includes a mold moving device, a first gas supply device, and a controller. It creates a first release space part by opening molds without damaging the data transferred face of the optical disk. The gas is supplied to this space at the right moment, ensuring that the optical disk and the stamper separate without causing any damage to the data.

Another notable patent is the "Molding apparatus and molding method for light-permeable articles." This invention features a nozzle that can move up and down, along with a suction path and device to remove gas at the contact face of a sprue bush during the nozzle's movement. This design effectively sucks up foreign substances before the molding operation, thereby improving the quality and yield of the molded product.

Career Highlights

Tokiharu Nakagawa is currently employed at Matsushita Electric Industrial Co., Ltd., where he continues to develop innovative technologies in the optical disk domain. His work has significantly impacted the quality and efficiency of optical disk production.

Collaborations

Throughout his career, Nakagawa has collaborated with notable coworkers, including Takaaki Higashida and Shinji Kadoriku. Their combined expertise has contributed to advancements in their field.

Conclusion

Tokiharu Nakagawa's contributions to optical disk technology through his patents demonstrate his commitment to innovation and quality improvement. His work continues to influence the industry positively.