Seijirou Ishimaru

Title: Seijirou Ishimaru: Innovator in Toner Composition Technology

Introduction

Seijirou Ishimaru is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of toner composition technology. His innovative work has led to the development of a unique toner composition that enhances the performance of printing materials.

Latest Patents

Ishimaru holds a patent for a toner composition that comprises a binder resin with dispersed additives, including a colorant and a charge control agent. The additives are present as agglomerates with an average sectional area ranging from 1.4 to 1.7 µm² in a section of toner particles. The total sectional area of these agglomerates in the toner particles is between 1.5% and 1.8%. Additionally, the composition exhibits specific rheological characteristics, with a dissipation factor (tan δ) ranging from 0.95 to 1.25 when the storage elastic modulus (G') is 10⁴ dyne/cm². This innovation is crucial for improving the quality and efficiency of toner applications.

Career Highlights

Seijirou Ishimaru is associated with Mita Industrial Co., Ltd., where he has been instrumental in advancing toner technology. His expertise and innovative mindset have positioned him as a key figure in the company. His work has not only contributed to the company's success but has also impacted the broader field of printing technology.

Collaborations

Ishimaru has collaborated with notable colleagues, including Masahide Inoue and Tetsuya Nakano. These partnerships have fostered a creative environment that encourages innovation and the sharing of ideas.

Conclusion

Seijirou Ishimaru's contributions to toner composition technology exemplify the impact of innovation in the printing industry. His patent and collaborative efforts highlight the importance of teamwork in driving advancements. His work continues to influence the development of high-quality printing materials.