Fujitsu Corporation

Shozo Tonai

Kunihiko Sato

Yoshihiro Tonomoto

Eiji Suzuki

Katsumi Sugimoto

Kenji Fuke

Keiko Tonai

Tsutomu Kawai

Hitoshi Yoshii

Katsuya Shimatsu

A developing device for developing an electrostatic latent image with a two-component developer comprises a developer container (46) including a developer-accumulating chamber (50), and a developer-agitating chamber (56) provided above the developer-accumulating chamber. A communication passage (64) is provided between the developer-agitating chamber and the developer-accumulating chamber, and is opened to the developer-agitating chamber to define an overflow opening for the developer. The device also comprises a developer-carrying body (48) provided in the developer-accumulating chamber of the developer container, and the developer-carrying body is exposed to face an electrostatic latent image carrying body, and brings the developer from the developer-accumulating chamber to a facing zone therebetween for development of an electrostatic latent image formed on the electrostatic latent image carrying body. The device further comprises a developer-lifting means (68, 68', 70) for lifting the developer, brought to the facing zone by the developer-carrying body, to the developer-agitating chamber of the developer container, and a developer-agitating means (58) for agitating the developer in the developer-agitating chamber of the developer container, a part of the developer agitated by the developer-agitating means being fed to the developer-accumulating chamber through the overflow opening and the communication passage.

Developing device for electrostatic latent image

Multicolor electrostatic recording apparatus and electrostatic latent

Growing community of inventors

Kawasaki, Japan

Shozo Tonai