William J Chambers

Title: William J. Chambers and His Photographic Imaging Patents.

Introduction

William J. Chambers is an inventor associated with Wilmington, Delaware, and E. I. du Pont de Nemours and Company. His patent work includes photosensitive compositions and processes for producing photopolymer images. He is credited with 9 patents.

Latest Patents

Chambers’s listed patents focus on silver-halide-based photoimaging and the development of durable, high-quality images.

- **Photosensitive Composition and Method for Forming a Neutral Black Image.** This invention describes a photosensitive composition and element, along with a photoimaging method. Selected dispersed pigments are added to a polymeric coupler to give the developed image a neutral-black optical density. The process involves latent imaging, development that makes the imaged area insoluble, and washing away the undeveloped layer.

- **Photoimaging Process.** This patent describes producing a photopolymer image by exposing a photosensitive element to actinic radiation, developing the latent image, and washing away the undeveloped soluble material. The element uses dispersed silver-halide particles in a polymeric coupler phase designed to become water-insoluble through coupling with a developing agent.

Career Highlights

Chambers’s disclosed inventions address key stages of photoimaging, including photosensitive-layer composition, image development, and removal of unexposed material. His work at E. I. du Pont de Nemours and Company connects his patent activity with the company’s research and development in imaging materials.

Collaborations

Among Chambers’s listed coworkers are Christina N. Lazaridis and Robert P. Foss. Their association reflects a collaborative setting for the development of photoimaging technologies.

Conclusion

William J. Chambers’s patents document contributions to photosensitive compositions and photopolymer imaging, with particular attention to producing neutral-black images and refining the development process.