Kouichi Shimizu

Title: Kouichi Shimizu: Innovator in Electrophotographic Development

Introduction

Kouichi Shimizu is a notable inventor based in Kashiwa, Japan. He has made significant contributions to the field of electrophotographic developers, holding a total of 2 patents. His work focuses on enhancing the performance and efficiency of electrophotographic processes.

Latest Patents

Shimizu's latest patents include a ferrite carrier for electrophotographic developers. This invention is characterized by a core material made of ferrite particles, which consist of 17.0 to 29.0 mol % of Li₂O and 71.0 to 83.0 mol % of Fe₂O₃. The ferrite carrier exhibits a resistance of 2.5×10⁸ to 2.5×10⁹ Ω when a voltage of 250 V is applied. It also satisfies specific resistance relationships when subjected to varying voltages. Additionally, the carrier is coated with a resin, which allows it to maintain a resistance of 1.0×10⁹ to 1.0×10¹⁵ Ω under the same voltage conditions, while having a true specific gravity of 4.70 or below.

Career Highlights

Kouichi Shimizu is associated with Powdertech Co., Ltd., where he continues to innovate in the field of electrophotographic technology. His work has been instrumental in advancing the capabilities of developers used in various printing technologies.

Collaborations

Shimizu has collaborated with notable colleagues, including Yuji Sato and Toshio Honjo. Their combined expertise has contributed to the development of advanced materials and technologies in the electrophotographic domain.

Conclusion

Kouichi Shimizu's contributions to the field of electrophotographic developers highlight his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving the efficiency and effectiveness of electrophotographic processes.