Company Filing History:
Years Active: 1998-1999
Title: Innovations in Silver Halide Photography by Junichi Komiyama
Introduction
Junichi Komiyama is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of photography, particularly in the development of silver halide photographic materials. With a total of two patents to his name, his work has advanced the capabilities of photographic technology.
Latest Patents
Komiyama's latest patents focus on innovative silver halide photographic materials and processes for forming images. One of his inventions provides a silver halide photographic material that can produce black-and-white pictures using dye images, even when processed with a color developer that is substantially free from benzyl alcohol. This invention minimizes the deterioration of photographic characteristics caused by harmful gases such as formaldehyde. The material consists of a base and at least one silver halide emulsion layer, with a silver chloride content of 95 mole percent or above. Additionally, it includes yellow, magenta, and cyan couplers, along with a specific compound in the hydrophilic colloid layer.
Another patent by Komiyama presents a silver halide photographic material that exhibits nearly equal sensitivities and gamma values for yellow, magenta, and cyan. This allows for the formation of black-and-white images in neutral black or sepia tones, even when processed with a color developer free from benzyl alcohol. The silver halide emulsion layer is spectrally sensitized by a specific dye and contains the necessary couplers for image formation.
Career Highlights
Junichi Komiyama is associated with Oriental Photo Industrial Co., Ltd., where he continues to innovate in the field of photography. His work has been instrumental in enhancing the quality and versatility of photographic materials.
Collaborations
Throughout his career, Komiyama has collaborated with notable colleagues such as Toshio Hirosawa and Kouji Katsube. These collaborations have contributed to the advancement of photographic technologies and innovations.
Conclusion
Junichi Komiyama's contributions to silver halide photography have paved the way for new advancements in the field. His innovative patents reflect a deep understanding of photographic materials and processes, showcasing his commitment to enhancing image quality and processing techniques.