Company Filing History:
Years Active: 1980-1983
Title: Tooru Harada: Innovator in Color Photographic Materials
Introduction
Tooru Harada is a distinguished inventor based in Minami-ashigara, Japan. He has made significant contributions to the field of color photographic materials, holding a total of 8 patents. His innovative work has advanced the technology used in photographic light-sensitive materials, enhancing image quality and durability.
Latest Patents
One of Harada's notable patents is for a color photographic light-sensitive material that incorporates azopyrazolone image dyes. This invention features a support with at least one light-sensitive silver halide emulsion layer, which is associated with a compound that provides a yellow dye image with excellent transferability and light fastness. This azo dye image-forming compound is particularly effective for use in photographic materials designed for color diffusion transfer processes. The material is capable of producing a transferred dye image with a high maximum image density (D.sub.max), a low minimum background density (D.sub.min), good gradation, and excellent color hue.
Another significant patent involves a color photographic silver halide light-sensitive material that includes a sulfonamidophenol scavenger. This invention describes a compound that can represent various alkyl and aryl groups, contributing to the overall effectiveness of the photographic material. The design ensures that the total number of carbon atoms in the specified groups is at least 16, enhancing the material's performance.
Career Highlights
Tooru Harada is currently associated with Fuji Photo Film Company, Limited, where he continues to innovate in the field of photographic technology. His work has been instrumental in developing materials that improve the quality and longevity of photographic images.
Collaborations
Harada has collaborated with notable coworkers, including Shinsaku Fujita and Yoshinobu Yoshida. Their combined expertise has contributed to the advancement of photographic materials and technologies.
Conclusion
Tooru Harada's contributions to the field of color photographic materials have made a lasting impact on the industry. His innovative patents reflect a commitment to enhancing image quality and performance in photographic technology.