Rie Harunaga

Title: Rie Harunaga: Innovator in Thermosensitive Recording Materials

Introduction

Rie Harunaga is a notable inventor based in Amagasaki, Japan. She has made significant contributions to the field of thermosensitive recording materials, holding a total of 2 patents. Her innovative work focuses on enhancing the performance and reliability of recording materials used in various applications.

Latest Patents

One of Harunaga's latest patents is a thermosensitive recording material with a high resistance to fogging. This invention features a thermosensitive colored image-forming layer formed on a support. It includes at least one colorless dye precursor, a color-developing agent, and a binder. The dye precursor is contained in a plurality of fine solid composite particles, which are prepared by dissolving a solute that includes the dye precursor in a solvent. This solvent contains a polymerization component, including a polyvalent isocyanate compound. The solution is emulsified in an aqueous medium, and the resulting emulsion undergoes a polymerization reaction to form fine solid composite particles. These particles have the dye precursor solid-dissolved in a solid thermoplastic resin matrix formed from a resultant polyurea or polyurethane polyurea resin.

Career Highlights

Rie Harunaga works at Oji Paper Co., Ltd., where she continues to develop innovative materials that push the boundaries of technology in her field. Her work has garnered attention for its practical applications and potential to improve existing technologies.

Collaborations

Throughout her career, Harunaga has collaborated with esteemed colleagues, including Masanao Tajiri and Satoshi Fukui. These partnerships have contributed to her success and the advancement of her research.

Conclusion

Rie Harunaga is a pioneering inventor whose work in thermosensitive recording materials has made a significant impact in her field. Her innovative patents and collaborations highlight her dedication to advancing technology.