Richard C Cotner

Title: Richard C. Cotner: Innovator in Photographic Technology

Introduction

Richard C. Cotner is a notable inventor based in Stillwater, MN (US), recognized for his contributions to the field of photographic technology. He holds a total of 7 patents, showcasing his innovative spirit and dedication to advancing imaging materials.

Latest Patents

Among his latest patents is a groundbreaking invention titled "Hybrid graphic arts films with reduced occurrence of pepper fog." This invention provides a photographic element developed in the presence of a hydrazide, which displays high contrast but low levels of pepper fog. The novel silver halide photographic elements comprise, in at least one layer of the element, a pepper-reducing agent. The pepper-reducing agent is a compound having at least one nitrogen-containing heterocyclic ring group and at least one carbonyl group in or attached to said ring. Preferred agents include 2,5-piperazinediones, glycol urils, 2,3-pyrazinedicarboxamides, 3-iminoisoindolinones, or glutarimides.

Another significant patent is for a "Method and apparatus for producing image reproducing materials." This invention focuses on producing image reproducing materials, especially newspaper printing plates or proofs with a predetermined image. The photothermographic material has a polymeric base supporting at least one photosensitive layer, capable of being developed by heat. It is exposed to radiation at a first wavelength modulated according to the predetermined image, producing a latent image in the photothermographic material. The photosensitive layer contains an antihalation colorant that is active to radiation in the first wavelength and transparent to radiation at a second wavelength.

Career Highlights

Richard C. Cotner is associated with the Minnesota Mining and Manufacturing Company, where he has made significant contributions to the development of innovative imaging technologies. His work has had a lasting impact on the field, particularly in enhancing the quality and efficiency of photographic materials.

Collaborations

Throughout his career, Cotner has collaborated with notable colleagues, including David C. Weigel and Kumars Sakizadeh. These collaborations have further enriched his work and contributed to advancements in photographic technology.

Conclusion

Richard C. Cotner's innovative contributions to photographic technology, evidenced by his 7 patents, highlight his role