This inventor holds 2 USPTO granted patents, plus 1 CIPO patent. Top assignee: Xerox Corporation. Active years: 1999-2002.
Company Filing History:
Years Active: 1999-2002
Title: John F. Obrien: Innovator in Electrophotographic Technology
Introduction
John F. Obrien is a notable inventor based in Fairport, NY (US). He has made significant contributions to the field of electrophotographic technology, holding a total of 2 patents. His work has been instrumental in advancing the efficiency and effectiveness of printing systems.
Latest Patents
Obrien's latest patents include the "DC pin scorotron charging apparatus" and a "printing machine arranged with the same." The DC pin scorotron charging apparatus is designed for charging a photoreceptor to a final voltage. It features a first DC pin scorotron charging device that initially charges the photoreceptor to an intermediate overshoot voltage, followed by a second device that uniformly charges it to the final voltage. The first device provides a generally high percent open control grid area, a high emitter slope, and a high emitter pin current. In contrast, the second device offers a low percent open control grid area, a low emitter slope, and a low emitter pin current. Additionally, his work on the "Recharge-Expose-and-Develop Image on Image color electrophotographic printing system" involves recharging the photoreceptor between the development of one color toner image and the subsequent exposure for a second color latent image.
Career Highlights
Throughout his career, John F. Obrien has worked with prominent companies such as Xerox Corporation and Mark S. Jackson. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the printing industry.
Collaborations
Obrien has collaborated with notable individuals in his field, including Charles H. Tabb and Jing Qing Song. These partnerships have further enhanced his innovative capabilities and have led to the development of advanced technologies.
Conclusion
John F. Obrien's contributions to electrophotographic technology through his patents and collaborations highlight his role as a significant inventor in the industry. His work continues to influence the evolution of printing systems, showcasing the importance of innovation in technology.