Company Filing History:
Years Active: 1997-2001
Title: Ikuko Yamada: Innovator in Aqueous Ink Compositions
Introduction
Ikuko Yamada is a prominent inventor based in Kawasaki, Japan. She has made significant contributions to the field of ink technology, particularly in the development of aqueous ink compositions. With a total of 4 patents to her name, Yamada's work has advanced the capabilities of ink-jet printing methods.
Latest Patents
Yamada's latest patents focus on aqueous ink compositions and the corresponding ink-jet printing methods. One of her notable inventions describes an aqueous ink composition that contains a colorant and a humectant. This composition exhibits a surface tension of less than 50 mN/m when measured by a maximum bubble pressure method at 25°C, with a bubble frequency set at less than 1 Hz. Additionally, it maintains a surface tension of more than 40 mN/m at a bubble frequency of more than 5 Hz. The ink-jet printing method she developed involves ejecting this aqueous ink composition in the form of droplets according to recording signals at a recording frequency of 8 kHz or more.
Career Highlights
Ikuko Yamada is currently employed at Ricoh Company, Ltd., where she continues to innovate in the field of printing technology. Her work has not only contributed to the company's advancements but has also set new standards in the industry.
Collaborations
Yamada has collaborated with notable colleagues, including Akio Kojima and Masayuki Koyano. These partnerships have fostered a creative environment that encourages innovation and the sharing of ideas.
Conclusion
Ikuko Yamada's contributions to aqueous ink compositions and ink-jet printing methods highlight her role as a leading inventor in her field. Her patents reflect a commitment to advancing technology and improving printing processes.