Tsutomu Utsumi

Title: **Innovations by Tsutomu Utsumi in Color Cathode Ray Tube Manufacturing**

Introduction

Tsutomu Utsumi, an accomplished inventor based in Kyoto, Japan, has made significant contributions to the field of electronics through his innovative techniques for manufacturing color cathode ray tubes. With a total of four patents to his name, Utsumi's work stands out for its practical applications and advancements in production efficiency.

Latest Patents

Utsumi's latest patents reflect his ingenuity and focus on improving manufacturing processes. One notable invention is a **method for manufacturing a color cathode ray tube** that employs a roller-type resistance welder for precise welding. This innovative method eliminates the complexity typically associated with welding control, enabling reliable and smooth operations at predetermined positions. By maintaining a flat portion during the shadow mask detachment, it allows for a secondary weld with the original height, ensuring that the mask frame can be reused without losing precision.

Another significant patent relates to the **manufacturing process of color cathode ray tubes** that ensures a predetermined tension force is applied to the shadow mask, preventing wrinkles during production. The method involves compressing a mask frame from the upper side to generate an effective repulsion force, which retains the tension of the shadow mask even after the compression force is released. This approach has proven successful in maintaining production quality and reducing defects.

Career Highlights

Throughout his career, Tsutomu Utsumi has worked with Matsushita Electronics Corporation, a leading company in the electronics industry. His contributions to the development of cathode ray tube technology underscore his role as an essential figure within the company and the broader field of electronics manufacturing.

Collaborations

Utsumi has collaborated with talented professionals such as Nozomu Arimoto and Takami Okamoto, enhancing his work's impact through teamwork and shared expertise. Their collective efforts reflect a commitment to innovation and excellence in the realm of electronic manufacturing.

Conclusion

Tsutomu Utsumi's inventive spirit and practical applications in the manufacturing of color cathode ray tubes showcase the importance of innovation in the electronics industry. His patents not only have advanced manufacturing processes but also have paved the way for future enhancements in product quality and production efficiency, making him a noteworthy inventor in his field.