Company Filing History:
Years Active: 2010-2013
Title: Yutaka Murai: Innovator in Electrophotography Toners
Introduction
Yutaka Murai is a dedicated inventor based in Wakayama, Japan, known for his significant contributions to the field of electrophotography. With a total of four patents to his name, Murai continues to advance technology in toner production, focusing on enhancing image quality and performance.
Latest Patents
One of Murai's recent innovations is a patent for a crosslinked resin particle dispersion liquid. This invention pertains to a toner for electrophotography that features a small particle size while excelling in low-temperature fusing ability, anti-hot offset properties, and overall image characteristics. The process for producing this toner includes neutralizing a resin that contains an acid group-containing polyester in an aqueous medium to create a dispersion of resin particles, followed by mixing this dispersion with an oxazoline group-containing polymer at elevated temperatures ranging from 60 to 100°C.
Another noteworthy patent focuses on the production of toners for electrophotography. This invention emphasizes the excellent heat-resistant storage properties and a wide fusing temperature range of the toner. The process encompasses several steps, including the emulsification of a resin binder that contains a polyester with units derived from trivalent or higher-valent carboxylic acids, the aggregation of the emulsified particles, and the coalescing of the aggregated particles. The steps also incorporate the addition of a compound with functional groups, such as oxazoline or glycidyl, which forms a chemical bond with the polyester resin binder.
Career Highlights
Yutaka Murai is associated with Kao Corporation, where his innovative work on electrophotographic toners has gained recognition within the industry. His research focuses on developing advanced materials that enhance performance in commercial printing applications.
Collaborations
Throughout his career, Murai has collaborated with esteemed colleagues such as Manabu Suzuki and Nobumichi Kamiyoshi. Their combined expertise has contributed to the success of their inventions and advancements in toner technology.
Conclusion
Yutaka Murai's contributions to the field of electrophotography through his inventive patents exemplify the impact of innovative thinking in technology. As he continues to work at Kao Corporation, Murai remains a key player in the development of high-performance toner materials that will shape the future of printing technology.