Sigeharu Koboshi

Title: Sigeharu Koboshi: Innovator in Photographic Material Processing

Introduction

Sigeharu Koboshi is a notable inventor based in Hino, Japan. He has made significant contributions to the field of photographic materials, holding a total of 3 patents. His work focuses on improving the processing of light-sensitive silver halide color photographic materials.

Latest Patents

Koboshi's latest patents include a process for treating light-sensitive silver halide color photographic materials. This innovative process involves removing the image silver after color development using a bath containing hydrogen peroxide or a hydrogen peroxide releasing compound. This method is combined with specific compounds to ensure that substantially no dye image is formed. Another significant patent pertains to the treatment of photographic materials, where he enhances fixing efficiency and reduces environmental pollution by using solutions containing bromine or iodine ions as fixing agents. This solution also incorporates a polymer with pyrrolidone nucleus units, which contributes to the overall effectiveness of the process.

Career Highlights

Koboshi is associated with Konishiroku Photo Industry Co., Ltd., where he has been instrumental in advancing photographic technology. His innovative approaches have not only improved processing techniques but have also addressed environmental concerns related to photographic materials.

Collaborations

Throughout his career, Koboshi has collaborated with notable coworkers such as Isamu Fushiki and Kenro Sakamoto. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the field.

Conclusion

Sigeharu Koboshi's contributions to photographic material processing highlight his role as an influential inventor. His innovative patents and collaborative efforts continue to shape the industry, making significant strides in both efficiency and environmental sustainability.