Company Filing History:
Years Active: 2017-2025
Title: Jun Shirakawa: Innovator in Liquid Developer Technology
Introduction
Jun Shirakawa is a prominent inventor based in Kawaguchi, Japan. She has made significant contributions to the field of liquid developer technology, holding a total of 10 patents. Her innovative work has advanced the capabilities of liquid developers used in various applications.
Latest Patents
Among her latest patents, Jun Shirakawa has developed a liquid developer and a method for manufacturing it. This liquid developer contains a carrier liquid with an SP value of not more than 8.20, a toner particle that is insoluble in the carrier liquid, and a toner particle dispersing agent. The toner particle includes a polyester resin with an acid value ranging from 5 mg KOH/g to 50 mg KOH/g, and a number-average molecular weight between 3,500 and 20,000. Additionally, the toner particle dispersing agent is a polymer with a primary amino group, having an amine value between 30 mg KOH/g and 200 mg KOH/g. The ratio of the total number of acid groups in the polyester resin to the total number of amino groups in the polymer is from 1.0 to 10.0. Another notable patent involves a liquid developer comprising a carrier liquid, a toner particle insoluble in the carrier liquid, and a polymer with a primary amino group that is soluble in the carrier liquid.
Career Highlights
Jun Shirakawa is currently employed at Canon Kabushiki Kaisha, where she continues to innovate in the field of liquid developers. Her work has not only contributed to the company's success but has also set new standards in the industry.
Collaborations
Throughout her career, Jun has collaborated with notable colleagues, including Junji Ito and Yasuhiro Aichi. These collaborations have further enhanced her research and development efforts.
Conclusion
Jun Shirakawa is a trailblazer in the field of liquid developer technology, with a remarkable portfolio of patents that reflect her innovative spirit. Her contributions continue to shape the future of this technology, making her a key figure in the industry.