Fujifilm Business Innovation Corp.

Sadayuki Tsujino

Katsumi Yamada

Makoto Kanno

Yoshitaka Nakajima

Atsushi Funada

Masanori Kato

Mitsutoshi Hongo

Yoshihisa Nakao

Daisuke Uchimitsu

Shota Igawa

A developing device includes a first transport member and a second transport member that are respectively disposed in a first transport path and a second transport path arranged in a vertical direction and that transport developer so as to circulate the developer between the first transport path and the second transport path; a developing member that is disposed to face the first transport path and that receives the developer from the first transport path; and a driving device that operates such that a relative speed ratio between a rotational speed of the developing member and a rotational speed of the second transport member is changeable.

Developing device and image forming apparatus with separately driven elements

A developing device includes a first transport member and a second transport member that are respectively disposed in a first transport path and a second transport path arranged in a vertical direction and that transport developer so as to circulate the developer between the first transport path and the second transport path; a developing member that is disposed to face the first transport path and that receives the developer from the first transport path; and a third transport member that is disposed in a third transport path through which the developer that has not been used by the developing member is collected and transported to the second transport path. A central shaft of the second transport member is disposed farther in a vertically upward direction than is a central shaft of the third transport member.

Developing device having a partition member and image forming apparatus

Growing community of inventors

Kanagawa, Japan

Sadayuki Tsujino