Shoji Okuno

Title: The Innovations of Shoji Okuno

Introduction

Shoji Okuno is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of electrophotography, particularly in the development of specialized toners. His work has implications for various applications in printing technology.

Latest Patents

One of Okuno's key patents is for an electrophotographic toner and the process for its preparation. This toner features a volume-average particle diameter ranging from 3 to 15 micrometers. It consists of a spherical particulate material with an average circularity of not less than 0.97, which encapsulates a colorant within a binder resin. The binder resin is a styrene-acrylic resin with an acid value between 30 and 150, and it is at least partially crosslinked. The tetrahydrofuran insoluble content in the binder resin, including crosslinked portions, ranges from 0.5 to 70% by weight. This innovation enhances the performance and quality of electrophotographic printing.

Career Highlights

Shoji Okuno is associated with Dainippon Ink and Chemicals, Incorporated, where he has contributed to advancements in toner technology. His expertise in materials science and engineering has positioned him as a valuable asset in the company.

Collaborations

Okuno has worked alongside talented colleagues, including Toyomi Hashizume and Yukiko Soma. Their collaborative efforts have furthered research and development in the field of electrophotography.

Conclusion

Shoji Okuno's contributions to the field of electrophotography through his innovative toner patent demonstrate his commitment to advancing printing technology. His work continues to influence the industry and showcases the importance of research and development in creating high-quality printing solutions.