Donald E. Wiedrich is a notable inventor based in Ontario, NY (US). He has made significant contributions to the field of technology, particularly in the area of printing and photoconductive systems. With a total of 3 patents to his name, Wiedrich has demonstrated a commitment to innovation and advancement in his field.

Latest Patents

Wiedrich's latest patents include groundbreaking inventions that enhance printing technology. One of his notable patents is the "LED Printbars with Depth of Focus Enhancement." This invention features a printbar assembly that consists of an array of light emitters, gradient index lenses, and a light control film. The light control film, which contains a plurality of microlouvers, is strategically placed to limit the angle at which light from the emitters can enter the lenses. This design increases the depth of focus of the gradient index lens array without significantly reducing the effective radiometric efficiency.

Another significant invention is the "Multi-Function Erase Lamp." This multi-segment AC plasma erase lamp is designed to selectively erase previously charged areas of a photoconductive member. It performs various functions, including fixed edge erase, edge shift, and patch generation. Additionally, it introduces variable edge erase capabilities to accommodate reduction images and changes in page size. A unique feature of this lamp is its 'dark' segment, which is energized but does not emit light, enhancing the turn-on time for the light-emitting segments. Furthermore, a voltage is applied to a photoresist coating on the lamp surface to create a field that repels toner and dust particles.

Career Highlights

Wiedrich has had a distinguished career at Xerox Corporation, where he has contributed to numerous advancements in printing technology. His work has not only improved existing systems but has also paved the way for new innovations in the industry.

Collaborations

Throughout his career, Wiedrich has collaborated with esteemed colleagues, including Thomas J. Hammond and Charles J. Urso, III. These collaborations have fostered an environment of creativity and innovation, leading to the development of cutting-edge technologies.

Conclusion

Donald E. Wiedrich's contributions to the field of technology, particularly in printing systems, highlight his innovative spirit and dedication to advancement. His patents reflect a deep understanding of the complexities of photocon

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