Kenji Kawamoto

Title: Kenji Kawamoto and Photocurable Inkjet Ink Innovation.

Introduction

Kenji Kawamoto is an inventor based in Osaka, Japan, associated with Sakata Inx Corporation. His patent work addresses the performance and reliability of photocurable inkjet printing inks.

Latest Patents

Kawamoto is credited with 1 patent, titled “Photocurable Inkjet Printing Ink Composition.” The invention aims to provide an ink that cures and adheres to varied printing surfaces, including paper, polyester, polyvinyl chloride, ethylene-vinyl acetate-based copolymers, and other vinyl-based polymers, while maintaining storage stability.

The patent describes a composition containing vinyl methyl oxazolidinone at 5–50% by mass, a monofunctional photopolymerizable monomer with a glass-transition temperature of 10°C or less at 10–50% by mass, a colorant, and a photopolymerization initiator. The resulting cured film is designed to offer low odor and tackiness, abrasion and water resistance, ethanol resistance, stretchability, and bending resistance.

Career Highlights

Kawamoto’s listed patent reflects work on ink formulation for printing applications that require both adhesion across different materials and durable cured coatings. He is associated with Sakata Inx Corporation.

Collaborations

Okinori Nakashima and Koki Ogasahara are identified as Kawamoto’s coworkers.

Conclusion

Kenji Kawamoto’s patent focuses on a versatile photocurable inkjet composition intended to combine broad substrate compatibility, storage stability, and durable coating performance.