Hirofumi Kyuushima

Title: Innovations of Hirofumi Kyuushima

Introduction

Hirofumi Kyuushima is a notable inventor based in Numazu, Japan. He has made significant contributions to the field of toner technology, holding a total of eight patents. His work primarily focuses on enhancing the performance and quality of toner products.

Latest Patents

Among his latest patents, Kyuushima has developed a toner that comprises a toner particle with a binder resin. This toner particle also includes a compound represented by a specific formula and a pigment featuring a quinacridone structure. Another innovative patent involves a toner that consists of a toner particle and a silica particle on its surface. In this invention, areas formed by a polyester resin and a styrene-acrylic resin are present on the toner particle's surface. The silica particle in this patent has a number-average particle diameter ranging from 15 to 60 nm, an average pore diameter of 5.0 to 20.0 nm, and a total pore volume of 0.20 to 1.50 cm/g.

Career Highlights

Kyuushima is associated with Canon Kabushiki Kaisha, a leading company in imaging and printing technologies. His work at Canon has allowed him to push the boundaries of toner innovation, contributing to the company's reputation for high-quality products.

Collaborations

Throughout his career, Kyuushima has collaborated with talented individuals such as Yoshiaki Shiotari and Naoya Isono. These collaborations have fostered a creative environment that has led to the development of advanced toner technologies.

Conclusion

Hirofumi Kyuushima's contributions to toner technology through his patents and collaborations highlight his innovative spirit and dedication to improving product performance. His work continues to influence the industry and drive advancements in imaging technology.