Shoko Matsumoto

Title: Shoko Matsumoto: Innovator in Water-Based Inks and Liquid Applicators

Introduction

Shoko Matsumoto, based in Tokyo, Japan, is a prominent inventor celebrated for her contributions to the field of water-based inks and liquid applicators. With five patents to her name, she has significantly impacted the way these products are manufactured and utilized in everyday applications.

Latest Patents

Matsumoto's latest innovations include a unique water-based ink composition, which incorporates 2.5 to 50 wt % of white-colored resin particles alongside a comparable percentage of film-forming resin emulsions. This formulation ensures a balance that provides optimal performance, featuring a ratio of white-colored resin particles to film-forming resin emulsions between 1:0.2 to 1:3. Notably, at least 20 wt % of both resin components are included in the total solid content, enhancing the ink's quality and usability.

Another significant invention is her development of a tip unit for liquid applicators, such as ball-point pens. This innovative tip unit is designed to increase the liquid discharge rate while preventing leaks or clogging. It integrates a ball housing and a capillary hole, effectively facilitating the flow of liquid. The design features a truncated conical surface, allowing for optimal liquid management and improved performance in writing instruments.

Career Highlights

Shoko Matsumoto has been a vital asset to the Sakura Color Products Corporation, a leader in producing high-quality writing instruments and art supplies. Her work exemplifies creativity and dedication, pushing the boundaries of traditional ink technologies.

Collaborations

Throughout her career, Matsumoto has collaborated with notable colleagues, including Hiroshi Inoue and Norimasa Kurihara. These partnerships have fostered an environment of innovation, enabling the development of cutting-edge products that enhance user experience in the writing and art sectors.

Conclusion

In summary, Shoko Matsumoto stands out as a pioneering inventor whose advancements in water-based inks and liquid applicators continue to make waves in the industry. Her efforts, alongside her talented colleagues, contribute to the ongoing evolution of products that are both functional and environmentally friendly.