Etsuro Nakagawa

Title: Etsuro Nakagawa: Innovator in Electrophotographic Toner Technology

Introduction

Etsuro Nakagawa is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of electrophotography, particularly through his innovative work on toner technology. His expertise and inventions have had a lasting impact on the industry.

Latest Patents

Etsuro Nakagawa holds a patent for an electrophotographic toner and a contact development method using the toner. This invention provides an electrophotographic toner comprising a polyester resin that serves as a fixing resin and an electric charge control resin that possesses a functional group, which endows a positively charging property to the toner. The polyester resin has an acid value of not more than 10 mgKOH/g and a hydroxyl value of not more than 40 mgKOH/g. The functional group is present in 2 to 5 mol % in the electric charge control resin. This electrophotographic toner exhibits a stable positively charging property, enabling the production of high-quality images.

Career Highlights

Etsuro Nakagawa is associated with Mita Industrial Co., Ltd., where he has been instrumental in advancing toner technology. His work has contributed to the development of products that enhance the quality and efficiency of electrophotographic printing.

Collaborations

Etsuro Nakagawa has collaborated with notable colleagues, including Kazushige Inoue and Hiroko Higuchi. Their combined efforts have fostered innovation and progress in the field of electrophotography.

Conclusion

Etsuro Nakagawa's contributions to electrophotographic toner technology exemplify his dedication to innovation. His patent reflects a significant advancement in the industry, showcasing his expertise and commitment to quality.