Iwao Matsuyama

Title: Iwao Matsuyama: Innovator in Bearing Technology

Introduction

Iwao Matsuyama is a prominent inventor based in Sagamihara, Japan. He has made significant contributions to the field of bearing technology, holding a total of 12 patents. His work primarily focuses on improving the performance and reliability of bearings used in various applications, including magnetic disk devices.

Latest Patents

Matsuyama's latest patents include innovative methods for bearing manufacturing and enhancements to magnetic disk devices. One notable patent addresses the issue of gas contaminants generated from the grease of bearings operating in magnetic disk devices. These contaminants can lead to stiction and magnetic head crashes. His method involves heat treating the grease to reduce slow evaporating hydrocarbon compounds, ensuring that the grease can effectively lubricate the bearings. The heat treatment is performed at a temperature range of 60 to 100 degrees Celsius and at a pressure of 10^-3 to 10^-8 torr. This process can be applied either before or after the bearings are assembled in the magnetic disk device.

Another significant patent involves the production of a rigid magnetic disk. This process entails applying a magnetic paint containing dispersed magnetic powders to a non-magnetic substrate, forming a magnetic recording film. By applying surface waves to the film in an undried state, the dispersibility and orientation of the magnetic powders are enhanced, resulting in a longitudinally oriented magnetic disk with superior electromagnetic properties.

Career Highlights

Iwao Matsuyama is associated with Hitachi, Ltd., where he has been instrumental in advancing bearing technology. His innovative approaches have not only improved the functionality of bearings but have also contributed to the overall performance of magnetic disk devices.

Collaborations

Matsuyama has collaborated with notable colleagues, including Tsuneo Suganuma and Kenzo Susa. Their combined expertise has further propelled advancements in the field of bearing technology.

Conclusion

Iwao Matsuyama's contributions to bearing technology and magnetic disk devices highlight his role as a leading inventor in the industry. His innovative patents and collaborative efforts continue to shape the future of technology in this field.