Location History:
- Kitakatsuragi-gun, JP (1996 - 1998)
- Kashiba, JP (1999 - 2002)
Company Filing History:
Years Active: 1996-2002
Title: **Innovations by Katsuaki Sumida: A Pioneer in Toner Technology**
Introduction
Katsuaki Sumida, an inventive force hailing from Kashiba, Japan, has made significant contributions to the field of imaging technology. With a remarkable portfolio of nine patents, Sumida stands out as a leading innovator at Sharp Corporation. His recent advancements focus on the development of toners for electrostatic latent images, showcasing his commitment to enhancing imaging processes.
Latest Patents
Among Sumida's latest patents is a formulation for a toner designed to develop electrostatic latent images. This innovative toner comprises a colorant, polyester resin, a negative charge controlling agent made from a chromium complex compound, and a positive charge controlling agent. Notably, the polyester resin is characterized by an acid value Z ranging from 15 to 33 mgKOH/g, a hydroxyl value Y from 4 to 17 mgKOH/g, and a number-average molecular weight (Mn) between 5200 and 7000.
Additionally, he has developed a toner that addresses issues of offensive odors and staining on cooling units, while also providing excellent offset resistance, low-temperature fixability, and environmental durability. The toner is primarily based on a polyester resin formed from dicarboxylic acids of a polybasic acid and diols of a polyhydric alcohol, ensuring that the content of dimethyl phthalate remains below 0.1% by weight.
Career Highlights
Katsuaki Sumida has dedicated his career to advancing imaging technology at Sharp Corporation. His innovative spirit is evident through his nine patents, which underline his role as a critical contributor to the company's research and development efforts. His work not only enhances product quality but also pushes the boundaries of imaging processes in the modern era.
Collaborations
Throughout his career, Sumida has collaborated with notable colleagues including Toshihisa Ishida and Hitoshi Nagahama. Together, they have shared insights and fostered innovation, further driving the development of advanced imaging technologies that meet evolving market needs.
Conclusion
Katsuaki Sumida exemplifies the innovative spirit that drives advancements in imaging technology. His recent patents reflect a deep understanding of the complexities involved in toner development and a dedication to creating solutions that enhance both performance and environmental sustainability. As he continues to innovate at Sharp Corporation, the future of imaging technology appears promising under his influence.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.