Roger W Nelson

Title: The Innovations of Roger W. Nelson: A Pioneer in Photographic Technology

Introduction

Roger W. Nelson, an esteemed inventor based in Fairport, NY, has made significant contributions to the field of photographic technology. With a total of six patents to his name, Nelson's innovations have advanced the processes involved in dye transfer printing, revolutionizing the way images are captured and produced.

Latest Patents

One of Nelson's latest patents focuses on "Curve shape control in a photographic imbibition dye transfer process." This groundbreaking process optimizes the exposure of dye imbibition printing matrix films. It involves imagewise exposing a matrix film that contains a visible light-sensitive silver halide emulsion within a colloid layer. The invention effectively controls the toe contrast of the imaged matrix film, which is achieved by incorporating a UV absorber in the colloid layer and flash exposing the matrix film with UV light. This unique combination allows for the identical treatment of blue, green, and red matrix films, facilitating their use in creating separate exposed relief images.

Additionally, another significant invention utilizes a heavy metal compound in conjunction with a substituted thiourea sensitizer to enhance photographic efficiency and sensitivity. This method demonstrates improved results without requiring the presence of a dye, marking a substantial advancement in photographic practices. The preferred heavy metal compound in Nelson's invention is potassium hexachloroiridate (IV), while 3-acetamidophenyl thiourea serves as the preferred thiourea.

Career Highlights

Roger W. Nelson's career is marked by his affiliation with the Eastman Kodak Company, a leader in imaging and photographic technologies. His work has not only advanced Kodak's capabilities but has also played a crucial role in establishing industry standards for photographic processes.

Collaborations

Throughout his career, Nelson has collaborated with notable coworkers such as John Figueras and Richard C. Sutton. This collaborative environment has fostered a culture of innovation and excellence, leading to the development of pioneering technologies that have shaped the photographic industry.

Conclusion

In conclusion, Roger W. Nelson's contributions to photographic technology through his patents illustrate his dedication to innovation. His advancements have provided new methods for processing images, ensuring that photographic practices continue to evolve in a rapidly changing technological landscape. Nelson's work exemplifies the spirit of innovation that drives progress in the field of photography.