Location History:
- Ashiyashi, JP (1990)
- Hyogo, JP (1988 - 1993)
- Ibaraki, JP (2007 - 2009)
- Osaka, JP (2010)
- Ashiya, JP (1986 - 2015)
Company Filing History:
Years Active: 1986-2015
Title: Inventor Seigi Kawarai – Innovations from Ibaraki, Japan
Introduction
Seigi Kawarai, a prolific inventor based in Ibaraki, Japan, holds an impressive portfolio of 15 patents. His inventions have made significant contributions to the fields of inkjet technology and magnetic recording methods, reflecting his dedication to innovation and excellence in engineering.
Latest Patents
Among his latest innovations is a **Primer for Ink-Jet Recording**. This inventive primer ink comprises a polymerizable compound and a polymerization initiator. Notably, it includes a monofunctional monomer with an aromatic hydrocarbon-based ring structure, and an aliphatic hydrocarbon-based monofunctional monomer. The total mass of these monomers represents 80% or more of the total mass of all polymerizable compounds in the ink. Additionally, the surface tension is designed to be between 25 mN/m to 31 mN/m, with a viscosity of 50 mPa·s or less.
Another notable invention by Kawarai is the **Servo Signal Recording Method, Servo Signal Recording Apparatus, and Magnetic Recording Medium**. This technique involves recording a servo signal on a magnetic tape, which features both a data band and a servo band. The method utilizes a unique erasure process based on a pulse with a varied duty ratio, ensuring that the effect of an information recording signal on reproduction output is minimized, thereby enhancing the servo signal's output.
Career Highlights
Seigi Kawarai is currently associated with Hitachi Maxell, Limited, where he has been instrumental in driving innovation within the organization. His work primarily revolves around the advancement of recording technologies that not only improve efficiency but also enhance overall performance.
Collaborations
Kawarai's journey is marked by fruitful collaborations with talented coworkers such as **Sadamu Kuse** and **Masao Okafuji**. Together, they have contributed to the development of groundbreaking technologies and patents that underline their collective expertise in the field.
Conclusion
In summary, Seigi Kawarai stands out as a remarkable inventor whose contributions to inkjet technology and magnetic recording methods hold considerable significance. With a solid record of patents and ongoing collaborations, his work continues to pave the way for future innovations in these technical domains.