This inventor holds 4 USPTO granted patents. Top assignees: Dainippon Ink and Chemicals, Incorporated, Dainippon Ink Chemicals, Inc.. Active years: 1981-2001.
Location History:
- Chiba, JP (1981)
- Sodegawara, JP (1983)
- Sodegaura, JP (2001)
Company Filing History:
3 out of 630 
1 out of 1 Years Active: 1981-2001
Title: Ryozo Sugawara: Innovator in Toner Development
Introduction
Ryozo Sugawara is a notable inventor based in Sodegaura, Japan. He has made significant contributions to the field of toner development, holding a total of 4 patents. His work focuses on enhancing the properties of toners used in electrostatic charge development.
Latest Patents
Sugawara's latest patents include innovative formulations for toners that improve performance in various applications. One of his patents describes a toner for non-magnetic single component development. This toner utilizes a polyester resin created by reacting a divalent or higher epoxy compound, a dibasic or higher polybasic acid compound, and a divalent or higher polyvalent alcohol. The resulting toner exhibits excellent fixing properties, offset resistance, and development durability.
Another significant patent details a toner composition and developer for electrostatic image development. This developer is designed to provide superior fixation properties and anti-offset capabilities. It maintains stable charge behavior during continuous printing and ensures high-quality image output. The toner composition includes colored resin particles made from a binder resin, a colorant, and a charge control agent, with specific structural components that enhance its effectiveness.
Career Highlights
Throughout his career, Ryozo Sugawara has worked with prominent companies in the industry, including Dainippon Ink and Chemicals, Incorporated and Dainippon Ink Chemicals, Inc. His expertise in toner technology has positioned him as a key figure in the development of advanced electrostatic imaging solutions.
Collaborations
Sugawara has collaborated with notable professionals in his field, including Kiyoshi Honda and Kazuya Kuriyama. These partnerships have contributed to the advancement of toner technology and the successful implementation of innovative solutions.
Conclusion
Ryozo Sugawara's contributions to toner development have significantly impacted the industry. His innovative patents and collaborations reflect his dedication to enhancing the performance of electrostatic imaging technologies.