Ha Sai

Title: Ha Sai - Innovator in Ink Technology

Introduction

Ha Sai is a prominent inventor based in Tokyo, Japan. She has made significant contributions to the field of ink technology, holding a total of 5 patents. Her innovative work focuses on developing advanced ink formulations and methods for ink-jet recording.

Latest Patents

One of Ha Sai's latest patents is an ink and ink-jet recording method. This ink comprises a water-insoluble colorant, a dispersant, a polymer resin, and water. The polymer resin is derived from a combination of four monomers, including methacrylic acid and three selected from C1- to C4-alkyl methacrylates, C6- to C10-alkyl acrylates, and unsaturated C2- to C4-alkyl methacrylates. Additionally, it includes a reactive emulsifier with a radical-polymerizable double bond. Another notable patent is for a pretreatment liquid that contains a multivalent metal salt, a cationized guar gum, and water. This liquid is applied to recording media before an aqueous color ink containing colorant is used, enhancing the quality of the printed images.

Career Highlights

Ha Sai is currently employed at Nippon Kayaku Kabushiki Kaisha, where she continues to innovate in the field of ink technology. Her work has been instrumental in advancing the capabilities of ink-jet printing, making it more efficient and effective.

Collaborations

Throughout her career, Ha Sai has collaborated with notable colleagues, including Hirotoshi Takahashi and Toru Ishii. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

Ha Sai's contributions to ink technology exemplify her dedication to innovation and excellence. Her patents reflect a deep understanding of materials and processes that enhance the printing industry. As she continues her work at Nippon Kayaku Kabushiki Kaisha, her impact on the field is sure to grow.