Daijirou Sirakura

Title: Daijirou Sirakura: Innovator in Conductive Roller Technology

Introduction

Daijirou Sirakura is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of conductive roller technology, holding a total of 4 patents. His innovative work focuses on enhancing the manufacturing processes and materials used in conductive rollers.

Latest Patents

One of his latest patents is for a conductive roller and manufacturing method thereof. This invention addresses the issue of water-based coating dripping during the manufacturing process. The conductive roller consists of a shaft, at least one elastic layer, and a surface layer. The elastic layer is created using a coating that contains a liquid absorbing agent, while the surface layer is formed using a different coating. The manufacturing method involves applying the elastic layer coating, drying it, and then applying the surface layer coating followed by drying.

Another notable patent is for a urethane resin composition and a conductive roller utilizing this composition. This invention provides an electrically conductive roller with enhanced elasticity and reduced air bubbles in the elastic layer. The urethane resin composition includes a carboxyl group-containing urethane resin, a cross-linking agent with an epoxy group, and a foaming agent derived from sugar and a saturated fatty acid. The use of this composition results in a more efficient and effective conductive roller.

Career Highlights

Daijirou Sirakura is currently employed at Bridgestone Corporation, where he continues to innovate and develop new technologies. His work has significantly impacted the manufacturing processes within the company, contributing to advancements in product quality and performance.

Collaborations

Throughout his career, Sirakura has collaborated with notable colleagues, including Junichi Takano and Hirotaka Tagawa. These partnerships have fostered a creative environment that encourages the exchange of ideas and expertise.

Conclusion

Daijirou Sirakura's contributions to conductive roller technology exemplify his dedication to innovation and excellence. His patents reflect a commitment to improving manufacturing processes and materials, making a lasting impact in his field.