Location History:
- Niigata, JP (2014)
- Joetsu, JP (2011 - 2015)
Company Filing History:
Years Active: 2011-2015
Title: Yumi Hirabaru: Innovator in Toner Technology
Introduction
Yumi Hirabaru is a prominent inventor based in Joetsu, Japan. She has made significant contributions to the field of imaging technology, particularly in the development of advanced toners for electrostatic-image development. With a total of 6 patents to her name, her work has been instrumental in enhancing image quality and printer performance.
Latest Patents
Hirabaru's latest patents include a method of image forming with a photoreceptor and toner. This method involves an electrophotographic photoreceptor that features a photosensitive layer with an undercoat layer containing metal oxide particles, a charge generation layer with hydroxygallium phthalocyanine, and a charge transport layer. The toner used in this method is designed to have a volume median diameter (Dv50) ranging from 4.0 µm to 7.0 µm. Additionally, the relationship between the volume median diameter and the percentage in number of toner particles with specific diameters is meticulously defined to ensure optimal performance.
Another notable patent focuses on toners for electrostatic-image development, which aims to improve image quality while minimizing issues such as white-background fouling and ghosting. This invention also addresses the need for satisfactory removability in cleaning and long-term stability, especially in high-speed printers. The toner is characterized by specific parameters, including a volume-median diameter and a degree of circularity, ensuring it meets the rigorous demands of modern printing technology.
Career Highlights
Yumi Hirabaru is currently employed at Mitsubishi Chemical Corporation, where she continues to innovate and develop new technologies in the field of imaging. Her work has not only advanced the capabilities of printers but has also contributed to the overall efficiency and effectiveness of imaging processes.
Collaborations
Hirabaru collaborates with esteemed colleagues such as Teruyuki Mitsumori and Kozo Ishio, further enhancing the innovative environment at Mitsubishi Chemical Corporation. Their combined expertise fosters a culture of creativity and technological advancement.
Conclusion
Yumi Hirabaru's contributions to toner technology exemplify her dedication to innovation and excellence in the field of imaging. Her patents reflect a deep understanding of the complexities involved in image formation and toner development. Through her work, she continues to shape the future of printing technology.
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.