Location History:
- Kagoshima, JP (1990 - 1993)
- Higashiosaka, JP (1994)
Company Filing History:
Years Active: 1990-1994
Title: **Tatsuo Imafuku: Innovator in Toner Manufacturing**
Introduction
Tatsuo Imafuku, an accomplished inventor hailing from Kagoshima, Japan, is known for his significant contributions to toner manufacturing technologies. With a total of four patents to his name, he has made strides in developing advanced toners for use in electrostatic imaging.
Latest Patents
Imafuku’s latest patents revolve around methods for manufacturing innovative toner compositions. One such patent describes a method of producing a spheroidal toner composed primarily of a binding resin that includes carbon black and a dispersion stabilizer. This patent emphasizes the importance of achieving a specific conductivity range, ideally between 4.times.10.sup.-10 and 5.times.10.sup.-9 S/cm, to enhance the performance of electrostatic images. The process includes forming grafted carbon black, incorporating a carbon black dispersion stabilizer, and polymerizing the composition in an aqueous medium.
Another notable patent focuses on toner formulations that use a binding resin as their main constituent, including colorants and charge control dyes. This toner displays a surface dye density of less than 5.times.10.sup.-3 g/g and requires specific weight percentages of monomers with charge control polar groups. The binding resin can comprise various monomer types, ensuring versatility in production.
Career Highlights
Currently, Tatsuo Imafuku is affiliated with Mita Industrial Co., Ltd., where he channels his expertise into innovative toner technologies. His work not only emphasizes the technical aspects of toner production but also aims at improving the overall quality and efficiency suitable for modern electrostatic imaging systems.
Collaborations
Throughout his career, Imafuku has collaborated with notable colleagues, including Shigeo Kurando and Yoshinori Makiura. These collaborations have been pivotal in fostering an environment of innovation and development within the company, leading to the successful launch of several patented technologies.
Conclusion
Tatsuo Imafuku stands out as a key figure in the realm of toner manufacturing, holding multiple patents that demonstrate his commitment to innovation. His contributions continue to influence the industry, setting benchmarks for quality and functionality in toner development, and establishing a legacy of technological advancement in electrostatic imaging.