Tsunetaka Matsumoto

Title: Tsunetaka Matsumoto: Innovator in Liquid Crystal Displays and Electrophotographic Toners

Introduction

Tsunetaka Matsumoto is a notable inventor based in Kobe, Japan. He has made significant contributions to the fields of liquid crystal displays and electrophotographic toners. With a total of 2 patents, his work has had a lasting impact on technology and innovation.

Latest Patents

Matsumoto's latest patents include a liquid crystal display cell and a process for producing the same. This innovative liquid crystal display cell features orientation films made of organic polymers such as polyimide and polyamide. The production process involves spreading an organic polymer solution on a water surface, resulting in excellent memory properties and contrast. Importantly, this design generates no static electricity, preventing short circuits between electrodes and breaking of electrodes.

Another significant patent involves an electrophotographic toner made by polymerizing monomers in solution. This process allows for the direct formation of a spherical electrophotographic toner containing a colorant, with a particle size suitable for electrophotography. By using a reaction medium that dissolves the monomer but not the formed polymer, Matsumoto's method ensures that the particle size of the colored resin is stably controlled to between 1 to 30 micrometers, achieving a very sharp particle size distribution.

Career Highlights

Throughout his career, Matsumoto has worked with prominent companies such as Hitachi, Ltd. and Nitto-Denko Corporation. His experience in these organizations has contributed to his expertise and innovative capabilities in the field.

Collaborations

Matsumoto has collaborated with notable coworkers, including Hisao Yokokura and Tadao Nakada. Their combined efforts have further advanced the technologies in which they specialize.

Conclusion

Tsunetaka Matsumoto's contributions to liquid crystal displays and electrophotographic toners exemplify his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving product performance and reliability in the industry.