Joji Fujii

Title: Joji Fujii - Innovator in Printed Wiring Board Technology

Introduction

Joji Fujii is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of printed wiring board technology. His innovative methods have paved the way for advancements in electronic manufacturing.

Latest Patents

Joji Fujii holds a patent for a method of producing a printed wiring board. This method involves forming a via-hole for interlayer connection in a laminate that includes a copper foil for laser processing. The process utilizes an easily soluble laser absorption layer that enhances the etching rate to a copper etchant. This layer absorbs an infrared laser beam, allowing for efficient manufacturing processes. The patent outlines the direct irradiation of the infrared laser beam on the absorption layer, followed by the removal of this layer during the desmear step or microetching step.

Career Highlights

Fujii is associated with Mitsui Mining & Smelting Co., Ltd., where he has been instrumental in developing innovative technologies. His work has contributed to the efficiency and effectiveness of printed wiring board production. With a focus on enhancing manufacturing processes, he has established himself as a key figure in the industry.

Collaborations

Joji Fujii has collaborated with notable colleagues, including Hiroaki Tsuyoshi and Hiroto Iida. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Joji Fujii's contributions to printed wiring board technology exemplify the spirit of innovation. His patented methods and collaborative efforts continue to influence the electronics manufacturing industry. His work is a testament to the importance of creativity and advancement in technology.