Risa Hashimoto

Title: Risa Hashimoto: Innovations in Inkjet Printing for Tablets.

Introduction

Risa Hashimoto is an inventor based in Tokyo, Japan, whose work focuses on inkjet inks and printed tablets. She is associated with Toppan Holdings Inc. and is credited with 3 patents.

Latest Patents

Hashimoto’s patent work includes innovations intended to improve the durability and lightfastness of inkjet-printed tablet surfaces.

One invention, “Inkjet ink and tablet printed matter,” addresses photodiscoloration and photofading in printed images across both low- and normal-humidity environments. Its ink formulation includes Blue No. 1 food dye and reduced isomaltulose as a fixing agent, with the latter specified at 5.7 to 16.2 times the dye’s mass.

Another invention, “Inkjet ink for tablet and tablet printed matter,” aims to improve ink fixedness and transfer durability while maintaining printing stability. The formulation includes an edible dye, an adhesive, and water and ethanol as solvents, and specifies a liquid adhesive.

Career Highlights

Hashimoto’s listed inventions apply inkjet-printing technology to tablet products, with attention to image stability, ink adhesion, and reliable printing. Her work reflects the development of specialized formulations for printed matter intended for use on tablets.

Collaborations

Hashimoto’s listed coworkers include Yasuhisa Miyazawa and Yuichi Hoshino. Her work is associated with Toppan Holdings Inc.

Conclusion

Risa Hashimoto’s patent work centers on inkjet inks for tablet printing, particularly formulations designed to improve image lightfastness, adhesion, and printing stability.