Simpei Miyagawa

Title: Simpei Miyagawa: Innovator in Electrophotographic Technology

Introduction

Simpei Miyagawa is a notable inventor based in Shizuoka, Japan. He has made significant contributions to the field of electrophotographic systems, particularly in the development of cleaning blades used in image forming devices. His innovative approach has led to the creation of a unique blade member that enhances the efficiency of toner removal.

Latest Patents

Miyagawa holds a patent for a blade member and cleaning blade designed for the removal of residual toner from a counterpart member in an image forming device. This blade member is constructed from a polyurethane rubber that utilizes diphenylmethane diisocyanate and a polyester polyol as its main raw materials. The design includes a film that covers the sliding contact portion of the blade body, ensuring effective contact with the counterpart member. The polyurethane rubber is characterized by an international rubber hardness degree of 65 to 85 IRHD, a tan δ peak temperature of 8°C or lower, and a tan δ peak value of 1.1 or less. The film is primarily composed of a hydrocarbon polymer.

Career Highlights

Miyagawa is currently employed at Sumitomo Riko Company Limited, where he continues to innovate and develop new technologies. His work has been instrumental in advancing the capabilities of image forming devices, making them more efficient and reliable.

Collaborations

Miyagawa has collaborated with notable colleagues such as Hiroyuki Mori and Yasunori Nimura. Their combined expertise has contributed to the successful development of innovative solutions in their field.

Conclusion

Simpei Miyagawa is a distinguished inventor whose work in electrophotographic technology has made a significant impact. His patented innovations continue to enhance the performance of image forming devices, showcasing his dedication to advancing technology.