Location History:
- Hilton, NY (US) (1995)
- Webster, NY (US) (2008)
Company Filing History:
Years Active: 1995-2008
Title: The Innovations of William A. Donofrio
Introduction
William A. Donofrio is a notable inventor based in Webster, NY (US). He holds 2 patents that showcase his contributions to the field of toner technology and organic photoreceptors. His work has significantly impacted the development of advanced materials used in printing technologies.
Latest Patents
One of his latest patents is titled "Preparation of Suspension Polymerized Toners." This invention relates to a process for creating a dry toner powder that includes a wax component, utilizing a limited coalescence suspension polymerization process. The toner can be formed using both conventional and aqueous dispersed waxes, as well as dry and aqueous dispersed pigments. The resulting toner exhibits properties that are desirable for next-generation applications, including small uniform particle size, anti-blocking features, and high-temperature anti-offset properties.
Another significant patent by Donofrio is "Rejuvenated Organic Photoreceptor and Method." This method involves restoring a used organic photoreceptor that consists of a supporting substrate with a photoconductor layer and an overlaying charge transport material. The process includes heating the photoreceptor to a temperature near or above the glass transition temperature of the charge transport layer, allowing for the top surface to flow or melt. After cooling to room temperature, a new layer of charge transport material is applied over the existing layer, effectively rejuvenating the photoreceptor.
Career Highlights
William A. Donofrio is associated with Nu-Kote International, Inc., where he has contributed to the advancement of toner and photoreceptor technologies. His innovative approaches have led to significant improvements in the performance and efficiency of printing materials.
Collaborations
Throughout his career, Donofrio has worked alongside notable colleagues, including Donald E. Snyder, Jr. and William J. Murphy. Their collaborative efforts have further enhanced the development of innovative solutions in their field.
Conclusion
William A. Donofrio's contributions to the field of toner technology and organic photoreceptors demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of material science and its applications in modern printing technologies.