Location History:
- Aichi, JP (1994)
- Toyohashi, JP (1989 - 2008)
- Ibaraki, JP (2018)
Company Filing History:
Years Active: 1989-2018
Title: Celebrating the Innovations of Hitoshi Iwasaki
Introduction
Hitoshi Iwasaki is a prominent inventor based in Toyohashi, Japan, known for his contributions to the field of polyester resins, particularly for toner applications. With a substantial portfolio of 13 patents, Iwasaki's work significantly impacts the technology of toner production, paving the way for enhanced imaging quality in printing.
Latest Patents
Among his latest innovations, Iwasaki has developed a process for producing polyester resin specifically for toners. This sophisticated resin is created through polymerization with a release agent that possesses a melting point ranging from 60–100°C or an alcohol component as a release agent. The resulting polyester resin showcases impressive properties, including a softening temperature between 100–160°C, an acid value of 0.1–30 mgKOH/g, and a glass transition temperature of 40–70°C. These characteristics ensure the production of toners with remarkable non-offset properties and gloss.
Another notable patent involves the formulation of a polyester resin for toners that includes an acid component of aromatic dicarboxylic acids and their lower alkyl esters, alongside an alcohol component like bisphenol A derivative diols. This innovative composition ensures that the resin maintains low levels of aldehyde compounds and by-products, enhancing user experience by avoiding irritating odors during the toner production process and copying operations. This innovation leads to clear copies with excellent image precision, broad color tone reproduction, and minimal light permeability issues.
Career Highlights
Iwasaki’s remarkable career is closely linked with Mitsubishi Rayon Company, Limited, where he has made significant strides in the field of polymer chemistry. His work continues to influence the capabilities and performance of toner products in the industry.
Collaborations
Throughout his career, Iwasaki has collaborated with esteemed colleagues such as Noriyuki Tajiri and Hirokazu Ito. Together, they have contributed to advancing polyester resin technology, fostering an environment of innovation and excellence within the company.
Conclusion
Hitoshi Iwasaki stands out as a leading inventor in polyester resin technology, particularly within the realm of toner production. His continuous efforts and innovative patents not only enhance the quality of printed images but also ensure a better user experience with toners. As such, Iwasaki's contributions are invaluable to the industry and are poised to drive future advancements in printing technologies.