Masahiko Itoh

Title: Masahiko Itoh: Inventor of a Conductive Roll

Introduction

Masahiko Itoh is an inventor associated with Inuyama, Japan, and Tokai Rubber Industries, Ltd. His patent work includes a conductive roll designed for use in electrophotographic processes.

Latest Patents

Itoh is credited with 1 patent, titled “Conductive Roll.” The invention describes a roll built around a shaft, with an elastic conductive layer, a resistance-adjusting layer, and a protective layer arranged in sequence on the shaft’s outer surface.

The resistance-adjusting layer uses a composition based on nitrile rubber or hydrogenated nitrile rubber. It combines an electron-conductive agent, a limited amount of an ion-conductive agent, and an insulating filler to help control the roll’s electrical resistance as environmental conditions change. The design aims to reduce image defects when the roll is used in electrophotographic equipment.

Career Highlights

Itoh’s listed patent reflects work on materials and components for electrophotographic systems. His association with Tokai Rubber Industries, Ltd. connects his inventive work with the company’s industrial research and development.

Collaborations

Wataru Imamura and Tetsuya Itoh are identified as Itoh’s coworkers. The available information does not specify their roles in the patent or whether they collaborated directly on the invention.

Conclusion

Masahiko Itoh’s conductive-roll patent addresses the challenge of maintaining stable electrical resistance in electrophotographic equipment, with the goal of supporting reliable image quality.