Company Filing History:
Years Active: 1990-1997
Title: Keiji Yoshida: Innovator in Toner Resin Technology
Introduction
Keiji Yoshida is a prominent inventor based in Nagoya, Japan. He has made significant contributions to the field of toner resin technology, holding a total of 9 patents. His work has been instrumental in developing materials that enhance the performance of copying machines.
Latest Patents
Yoshida's latest patents include innovative formulations for toner resins. One notable patent describes a toner resin that comprises a styrene component, an acrylic acid ester component, and a divinyl monomer component. This resin exhibits a glass transition temperature ranging from 50 to 68 degrees Celsius, a tan delta value of 0.3 to 0.7 at 200 degrees Celsius, and a gel fraction of 55 to 83%. The softening point of this resin, where it has a melting viscosity of 100,000 poises, is between 200 to 410 degrees Celsius. This toner is designed to provide excellent fixing properties, non-offsetting characteristics, and blocking resistance, making it suitable for high-temperature, high-speed copying machines. Another patent focuses on a resin composition for toners, which includes a suspension polymerizate of a polyester and vinyl monomers, ensuring optimal performance in various applications.
Career Highlights
Keiji Yoshida is currently employed at Mitsubishi Rayon Company, Limited, where he continues to innovate in the field of polymer chemistry. His expertise in developing advanced toner resins has positioned him as a key figure in the industry.
Collaborations
Yoshida has collaborated with notable colleagues such as Syuji Takahiro and Motoshi Inagaki. Their combined efforts have led to advancements in toner technology and improved product offerings in the market.
Conclusion
Keiji Yoshida's contributions to toner resin technology have significantly impacted the industry. His innovative patents and collaborations reflect his dedication to advancing material science.