Harumi Sakoh

Title: Harumi Sakoh: Electrophotographic Inventions

Introduction

Harumi Sakoh is an inventor associated with Canon Kabushiki Kaisha in Kawasaki, Japan. Sakoh’s patent work includes technologies for electrophotographic image formation and photosensitive members. The supplied information lists 9 patents.

Latest Patents

One of Sakoh’s listed patents, “Electrophotographic Image-Forming Method, Electrophotographic Image-Forming Apparatus, and Process Cartridge,” describes an image-forming process that charges a photosensitive member, creates and develops an electrostatic latent image, and transfers the resulting toner image to a transfer material. The developing step also collects toner remaining on the photosensitive member after transfer. The invention specifies toner containing an external additive and a photosensitive member with defined surface-hardness and friction properties.

Another listed patent, “Electrophotographic Photosensitive Member Having…,” concerns a photosensitive member made with a conductive support and a photosensitive layer. Its surface layer contains a polycarbonate resin with a chain fluoroalkyl group of at least four carbon atoms. The disclosure also covers an electrophotographic apparatus and a device unit incorporating the photosensitive member.

Career Highlights

Sakoh’s listed inventions address components and processes used in electrophotographic printing. The work focuses on photosensitive-member surface properties, toner handling, image formation, and apparatus design.

Collaborations

The supplied information identifies Shoji Amamiya and Noboru Kashimura as Sakoh’s coworkers. Their shared association with Canon Kabushiki Kaisha reflects a collaborative setting for developing electrophotographic technologies.

Conclusion

Harumi Sakoh’s listed patent portfolio highlights contributions to electrophotographic image formation and photosensitive-member design at Canon Kabushiki Kaisha.