Hisashi Hanzawa

Title: Hisashi Hanzawa: Innovator in Image-Forming Technology

Introduction

Hisashi Hanzawa is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of image-forming technology, holding a total of 4 patents. His work focuses on enhancing the efficiency and quality of image transfer processes.

Latest Patents

One of Hisashi Hanzawa's latest patents is a recording apparatus responsive to changing electrical resistance of transfer media. This innovative image transferring apparatus holds a print sheet in a nip between an image carrier and a transfer roller. It supplies current to the transfer roller to effectively transfer a toner image formed on the image carrier to the print medium. The apparatus features conductive brushes that are in contact with the ends of the transfer roller, forming a bypass circuit. This bypass circuit is connected to ground through a resistor, allowing a portion of the current supplied to the transfer roller during the image transferring operation. This design helps avoid print defects such as discharge-caused marks or toner stops.

Another notable patent is an image-forming device that has a plurality of image-forming units which apply different forces to the recordable medium. The objective of this invention is to provide a high-quality multicolor image at a relatively low cost. The image-forming device includes an endless belt that conveys a recordable medium, multiple image-forming units that form a toner layer on the recordable medium via the endless belt, and a fixer that secures the toner layer on the recordable medium. Importantly, the first pressing force applied to the recordable medium by the last image-forming unit is greater than the second pressing force applied by an adjacent image-forming unit.

Career Highlights

Hisashi Hanzawa is currently associated with Fujitsu Corporation, where he continues to innovate in the field of imaging technology. His work has significantly impacted the efficiency and quality of image-forming devices.

Collaborations

Throughout his career, Hanzawa has collaborated with notable colleagues, including Yoshio Yamaguchi and Toshio Tooda. These collaborations have further enriched his contributions to the field.

Conclusion

Hisashi Hanzawa is a key figure in the development of advanced image-forming technologies. His innovative patents and contributions to Fujitsu Corporation highlight his commitment to enhancing the quality and efficiency of imaging processes.