Location History:
- Kawasaki, JP (2000)
- Nagano, JP (2001 - 2009)
Company Filing History:
3 out of 4,819 
2 out of 152 
1 out of 24 
Years Active: 2000-2009
Title: Innovations by Hidetaka Yahagi: Advancements in Electrophotographic Technology
Introduction
Hidetaka Yahagi, an inventive mind based in Nagano, Japan, has made significant contributions to the field of electrophotography. With a total of six patents to his name, Yahagi’s work primarily focuses on enhancing the production processes and efficiency of electrophotographic photoconductors.
Latest Patents
Among Hidetaka Yahagi's notable patents, two stand out for their groundbreaking methodologies:
1. **Method of Producing an Electrophotographic Photoconductor**: This innovation presents a method for producing an electrophotographic photoconductor that effectively prevents the aggregation of filler material on the etched pits of an aluminum drum surface. The process includes cutting the aluminum cylindrical substrate, followed by degreasing and cleaning with an aqueous detergent. Yahagi’s method culminates in the application of a coating layer that leads to a photoconductor with minimal printing defects. A unique aspect is the limitation of nickel concentration in the aluminum substrate to at most 50 ppm by weight.
2. **Method of Cleaning an Aluminum Drum Substrate for an Electrophotographic Photoconductor**: This patent details a cleaning process that efficiently removes cutting chips and high viscosity oils without the need for chlorine-containing solvents. The process is characterized by a high-pressure cleaning nozzle that ejects a cleaning liquid in a fan shape, enabling thorough cleaning of multiple aluminum drum substrates arranged vertically.
Career Highlights
Hidetaka Yahagi has had a distinguished career, during which he has collaborated with industry giants such as Fuji Electric Co., Ltd. and Fuji Electric Device Technology Co., Ltd. His expertise and innovative approaches have been instrumental in advancing technologies that enhance the performance of electrophotographic devices.
Collaborations
Throughout his career, Yahagi has worked alongside talented professionals, including Masaaki Sakaguchi and Yutaka Nakagishi. These collaborations have fostered a productive environment for the exchange of ideas and innovation, contributing greatly to the field.
Conclusion
Hidetaka Yahagi’s pioneering work in the field of electrophotography showcases the impact of inventive thinking on technology advancements. His patents not only improve production methods but also optimize the functionality of products used in everyday applications, marking him as a notable inventor in his field.