Company Filing History:
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Years Active: 1999
Title: Hiroichi Ishihara: Innovator in Toner Binder Technology
Introduction
Hiroichi Ishihara is a notable inventor based in Kobe, Japan. He has made significant contributions to the field of electrostatic photography through his innovative work on toner binders. His expertise and inventions have had a lasting impact on the industry.
Latest Patents
Ishihara holds a patent for a toner binder specifically designed for flash fixing applications. This toner binder comprises a crosslinked polyester resin that utilizes 0.1 to 3 mol % of trimellitic acid and 0.1 to 5 mol % of an epi-bis type epoxy as crosslinking components. The binder has a number average molecular weight (Mn) ranging from 2,000 to 4,000, with a weight average molecular weight to number average molecular weight ratio (Mw/Mn) of 10 to 25. Additionally, it features a residue unsoluble in tetrahydrofuran solvent of 1 wt % or less. The toner composition that incorporates this binder demonstrates excellent fixability and void resistance during flash fixing, while also minimizing fixing odor.
Career Highlights
Throughout his career, Ishihara has worked with prominent companies such as Fujitsu Corporation and Harima Chemicals, Incorporated. His experience in these organizations has allowed him to refine his skills and contribute to advancements in toner technology.
Collaborations
Ishihara has collaborated with notable colleagues, including Yoshimichi Katagiri and Hitoshi Kusaba. These partnerships have fostered innovation and development in the field of electrostatic photography.
Conclusion
Hiroichi Ishihara's contributions to toner binder technology exemplify his dedication to innovation in the field. His patent and collaborations highlight his role as a key figure in advancing electrostatic photographic processes.