Canon Kabushiki Kaisha

Toshiki Okamura

Akihisa Matsukawa

Takanori Watanabe

Naoki Hayashi

Hideo Kihara

Kuniaki Tamagaki

Makoto Tokudome

Hiroyoshi Iwayama

Hiroki Tanaka

Satoshi Sunahara

Motonari Ito

An image forming apparatus in which a developer bearing member is disposed below a cleaning member, which cleans a charging member, so as to overlap with the cleaning member when viewed in a vertical direction and includes a base body and an elastic layer covering the base body and having a width in a longitudinal direction of the developer bearing member that accommodates the entire region of the cleaning member in the longitudinal direction. In the longitudinal direction, the cleaning member is disposed at a position where the entire region thereof in the longitudinal direction is accommodated in the width of the elastic layer.

Image forming apparatus, process cartridge, developing cartridge, and drum cartridge

In an axial direction of a developing sleeve that bears magnetic developer on an outer circumferential surface thereof, ends of a sheet-shaped stirring member that stirs the magnetic developer in a container frame to move the magnetic developer toward the developing sleeve are disposed on an outer side of a region in a magnetic field region generated by a magnet roller disposed on an inner side of the developing sleeve. The region has a magnetic field strength equal to or larger than a predetermined magnetic flux density at which the magnetic developer can be borne on the surface of the developing sleeve.

Developing apparatus, process cartridge, and image forming apparatus

Growing community of inventors

Yokohama, Japan

Toshiki Okamura