Tatsuro Ohsawa

Title: Innovations by Tatsuro Ohsawa

Introduction

Tatsuro Ohsawa is a notable inventor based in Nagano, Japan. He has made significant contributions to the field of image forming technology. With a total of 2 patents, his work focuses on enhancing the efficiency and effectiveness of contact transfer devices and image forming equipment.

Latest Patents

Ohsawa's latest patents include a contact transfer device and image forming equipment. The contact transfer device applies a bias to a transfer member to transfer toner from a latent image carrier to a recording member. The image forming equipment incorporates this device and is designed to form images at a specified process speed. The patents stipulate various characteristics and conditions related to the operation of the contact transfer device. For instance, the resistance value of each member, other than the transfer member, that contacts the recording sheet during transfer is expressed as R' ≥ 2.4 × 10^10 Vp, where Vp represents the process speed.

Additionally, the image forming apparatus includes an image carrier and a transfer member that is in contact with the image carrier for transferring toner to a recording member. The toner consists of resin particles and external additives. The transfer member must satisfy specific relationships regarding the aerated bulk density of the toner and the hardness of the transfer member. Furthermore, the resistance of the transfer member and the current value of the transfer bias must adhere to defined relationships to ensure optimal performance.

Career Highlights

Ohsawa is currently employed at Seiko Epson Corporation, where he continues to innovate in the field of imaging technology. His work has contributed to advancements in the efficiency of image formation processes.

Collaborations

He has collaborated with notable coworkers, including Toshiya Takahata and Yasuhito Hirashima, to further enhance the development of imaging technologies.

Conclusion

Tatsuro Ohsawa's contributions to the field of image forming technology through his patents and work at Seiko Epson Corporation highlight his role as a significant inventor. His innovations continue to impact the efficiency of imaging processes in various applications.