Kazumasa Nasu

Title: Kazumasa Nasu: Innovator in Disk Technology

Introduction

Kazumasa Nasu is a prominent inventor based in Daito, Japan. He has made significant contributions to the field of disk technology, holding a total of 5 patents. His work focuses on improving the performance and stability of disk apparatuses.

Latest Patents

One of his latest patents is a "Disk apparatus with improved optical pickup mount." This invention ensures that the position of an optical pickup is maintained accurately during the rotation of the disk. It prevents the free end portion of a cantilever movable member from being displaced lower than its proper position, even if the movable member is heavy. This design enhances the vibration characteristics of the apparatus. The invention includes a movable member, a chassis, a clamp mechanism, and a cam mechanism. The cam mechanism features a shift lever connected to the free end of the movable member via elastic bodies and a cam main body. The positioning means consists of a protrusion on the shift lever, a stepped engaging surface for supporting the protrusion, and a guide mechanism. Additionally, anti-positioning means are provided to disengage the protrusion from the engaging surface.

Another notable patent is the "Disk loading apparatus." This invention improves the stability in the centering operation at a low cost by simply changing the shape of the guide groove, without the need for extra parts or complicated structures. The disk loading apparatus includes a feed roller and a disk arm that moves back and forth between an initial position and a retracted position. The feed roller centers the disk, while the guide groove features slant wall surfaces that progressively decrease in width in the retracting direction of the disk arm, along with receiving surfaces that limit the tilt angle of the disk arm.

Career Highlights

Kazumasa Nasu is associated with Funai Electric Company Ltd., where he has been instrumental in developing innovative disk technologies. His expertise and inventions have contributed to the company's reputation in the electronics industry.

Collaborations

He has collaborated with notable coworkers, including Ryuuji Hayashi and Katsunori Onishi, who have also contributed to advancements in disk technology.

Conclusion

Kazumasa Nasu's innovative work in disk technology has led to significant advancements in the field. His patents reflect a commitment to improving the performance and stability of disk apparatuses, making him a valuable contributor