Yoshio Kurita

Title: The Innovations of Yoshio Kurita: A Pioneer in Lithographic Technology

Introduction

Yoshio Kurita, an accomplished inventor from Hino, Japan, has made significant contributions to the field of lithographic printing technology. With four patents to his name, Kurita has been instrumental in developing advanced processes that enhance the quality and efficiency of lithographic printing plates. His latest innovations reflect a commitment to improving both the functionality and durability of printing materials.

Latest Patents

Two of Kurita's most recent patents highlight his innovative approach:

1. **Process of Developing Posi-Type Lithographic Printing Plate**: This patent introduces a developer composition of an alkaline aqueous solution that includes a reducing inorganic salt, notably an alkali metal salt of sulfurous acid, such as sodium sulfite. This composition is designed for developing lithographic printing plate materials containing photosensitive o-quinonediazide compounds and organic polymers. Significantly, it reduces deterioration in developing capacity caused by air exposure and enhances stability over time. The developer solution has a pH of 11 or higher and is effective for both nega-type and posi-type photosensitive layers.

2. **Process for Forming Photo-Polymeric Images**: In this invention, Kurita outlines a process for creating photo-polymerized images in light-sensitive layers that include an activated component, a light-sensitive resin, and a colorable or decolorable component. Upon exposure to activating radiation, this process allows the colored component to decolor or the decolorable component to transform into color. The energy involved in this transformation is transferred to the light-sensitive resin, facilitating polymerization.

Career Highlights

Yoshio Kurita has spent his professional career with Konishiroku Photo Industry Co., Ltd., a leading company in the field of photographic and imaging technology. His innovations have significantly influenced practices within the industry, underscoring his role as a key figure in lithographic advancements.

Collaborations

In his journey of innovation, Kurita has collaborated with notable individuals such as Kiyoshi Goto and Hiroh Kawada. These collaborations emphasize the importance of teamwork and shared expertise in the pursuit of groundbreaking inventions.

Conclusion

Yoshio Kurita's contributions to lithographic technology through his inventive processes and collaborations demonstrate his importance in the industry. With a focus on improving the quality and efficacy of printing materials, his work continues to shape the future of lithographic printing. As he forges ahead with further innovations, Kurita assures his place among the innovators who redefine their fields.