Location History:
- Suntoh-gun, JP (2010)
- Suntou-gun, JP (2015 - 2018)
Company Filing History:
Years Active: 2010-2018
Title: Hirofumi Kumoi: Pioneering Innovations in Electrophotography
Introduction
Hirofumi Kumoi is a notable inventor based in Suntou-gun, Japan, recognized for his substantial contributions to the field of electrophotography. With a total of nine patents to his name, Kumoi's work has significantly impacted the technology surrounding imaging systems.
Latest Patents
Kumoi's latest patents encompass crucial advancements in the design and functionality of electrophotographic systems. Notably, his innovation related to an electrophotographic photosensitive member features both a substrate and a photosensitive layer that incorporates a phthalocyanine pigment. This particular pigment is characterized by crystalline particles that maintain a crystallite correlation length (denoted as r) and a particle size (R) of 400 nm or less. Furthermore, he defines a parameter k, where k = r/R, which falls within the range of 0.17 to 0.42.
Additionally, he has developed a method for manufacturing an electrophotographic photosensitive member that consists of a support, a charge generation layer, and a charge transport layer. This charge transport layer, which serves as the surface layer of the photosensitive member, incorporates a polycarbonate resin with specific structural units that enhance the efficiency of the imaging process.
Career Highlights
Kumoi is associated with Canon Kabushiki Kaisha, where he applies his expertise to drive innovations and improvements in imaging technologies. His career reflects a deep commitment to advancing the performance and reliability of electrophotographic apparatuses, contributing to Canon's reputation as a leader in the imaging industry.
Collaborations
Throughout his tenure at Canon, Kumoi has collaborated with esteemed coworkers such as Takashi Anezaki and Daisuke Miura. Together, they have worked on various projects that further the development of proprietary technologies and elevate the efficiency of Canon's product offerings.
Conclusion
In summary, Hirofumi Kumoi's contributions to electrophotography represent essential advancements in imaging technology. With a strong portfolio of innovations and collaborative efforts with his colleagues, Kumoi continues to play a pivotal role in shaping the future of electrophotographic systems. His work not only exemplifies ingenuity but also illustrates the significance of teamwork in the pursuit of technological excellence.
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.