Hirofumi Yanagizawa

Title: Hirofumi Yanagizawa: Innovator in Electroconductive Technologies

Introduction

Hirofumi Yanagizawa is a notable inventor based in Moriyama, Japan. He has made significant contributions to the field of electroconductive technologies, holding a total of 4 patents. His work primarily focuses on enhancing the functionality of devices used in image forming and copying technologies.

Latest Patents

Yanagizawa's latest patents include an electroconductive brush and a charging device for electrophotography. The electroconductive brush is designed to excel in functionality, serving as a cleaning brush in color copiers that utilize fine-grain color toner. This innovative brush comprises a base fabric and a mixed fiber of polyethylene terephthalate and nylon-66, which are raised on the base fabric through pile-flocking. The fibers possess a volume resistivity of 10 to 10^9 Ω·cm, ensuring effective conductivity. The charging device, on the other hand, charges an object by making contact with a conductive charging member and applying a voltage across the member and the object, enhancing the efficiency of image formation.

Career Highlights

Throughout his career, Yanagizawa has worked with prominent companies such as Gunze Limited and Mitsui Petrochemical Industries, Ltd. His experience in these organizations has contributed to his expertise in developing innovative technologies that address the needs of the imaging industry.

Collaborations

Yanagizawa has collaborated with notable colleagues, including Katsuhiko Oikawa and Atsushi Okada. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.

Conclusion

Hirofumi Yanagizawa's contributions to electroconductive technologies have made a significant impact in the field of image forming and copying devices. His innovative patents reflect his dedication to enhancing functionality and efficiency in these technologies.