William Henry Faul

Title: William Henry Faul: Innovator in Photographic Technology

Introduction

William Henry Faul is a notable inventor based in Rochester, NY (US), recognized for his contributions to photographic technology. He holds a total of 3 patents, showcasing his innovative approach to image production and processing.

Latest Patents

One of Faul's latest patents is a method of producing reversal color images. This method involves the use of silver halide photographic elements that utilize a leuco dye, which is the reaction product of a color-forming coupler and an N,N-dialkyl-p-phenylenediamine. The process stabilizes the dye against aerial oxidation through an electronegative group attached to the benzene ring. The method includes developing a silver image in imagewise exposed areas of the silver halide element. The residual silver halide in unexposed areas is then fogged and developed while concurrently oxidizing the leuco dye in these areas to create a dye image that reverses the imagewise exposure. The developed silver is subsequently removed from the element, leaving a dye image without oxidizing the leuco dye in the imagewise exposed areas.

Another significant patent involves a process for producing positive color diffusion transfer images. This process employs light-sensitive photographic elements containing dye-releasing redox agents, which may include a sulfonamido compound or a hydroquinone derivative. These agents are capable of cleaving to release a diffusible color-providing moiety. A preferred method utilizes black-and-white developer compositions.

Career Highlights

William Henry Faul has made significant strides in the field of photography through his work at Eastman Kodak Company. His innovative techniques have contributed to advancements in photographic imaging and processing.

Collaborations

Faul has collaborated with notable coworkers such as Thomas E. Gompf and Patrick H. Saturno, further enhancing the impact of his work in the industry.

Conclusion

William Henry Faul's contributions to photographic technology through his patents and collaborations have made a lasting impact on the field. His innovative methods continue to influence the way images are produced and processed today.