Takeshi Iijima

Title: Innovator Takeshi Iijima: Contributions to Photosensitive Film Development

Introduction

Takeshi Iijima, an esteemed inventor based in Higashimatsuyama, Japan, has made significant contributions to the field of photosensitive films. With a remarkable portfolio of five patents, Iijima's innovations are essential in advancing the technology of imaging materials, ensuring higher quality and versatility in film development.

Latest Patents

Iijima's latest patents are noteworthy for their innovation and practical applications. One major invention is a developing machine for photosensitive films, which is specifically designed for both negative and positive type films. This machine features a warm water-dipping section that consists of a warm water bath, a brush-developing section utilizing a rotating brush roll for non-image area removal, and a drying section that employs warm air to ensure thorough drying. This process allows the negative type photosensitive film to dissolve in ordinary temperature water, while the positive type utilizes warm water for the development process.

Additionally, Iijima has developed an improvement in a multicolor image-forming method, which includes a new multicolor image-forming material. This innovative approach uses a heat transfer photosensitive material composed of a transparent substrate, a color layer soluble in water yet light-insensitive, and a heat-fusible intermediate layer.

Career Highlights

Working at Sanyo-Kokusaku Pulp Co., Ltd., Iijima has dedicated his career to refining and developing new technologies in film processing. His insights and expertise have not only contributed to the company's success but have also set a standard in the industry for quality and efficiency in photosensitive film development.

Collaborations

Throughout his career, Iijima has collaborated with talented colleagues such as Hisashi Mino and Norio Yabe. These partnerships have undoubtedly enriched his work, fostering an environment of shared knowledge and innovation that has pushed the boundaries of what is possible in photosensitive film technology.

Conclusion

Takeshi Iijima's contributions to the field of photosensitive films showcase the importance of innovation and dedication in the realm of technology. His patented inventions, particularly the advanced developing machine and the multicolor image-forming method, continue to influence the industry. Through his work and collaborations, he exemplifies the spirit of invention and the relentless pursuit of progress in imaging technology.