Patent Number: 7,103,298

Title: Toner scatter suppressing developing device, image formation apparatus and process cartridge

Abstract: A developing device includes a developing agent carrying member and a latent image carrying member agent. A casing having a developing agent storing space for storing developing agent has an opening whereby a portion of the surface of the developing agent carrying member faces the latent image carrying member. A restricting member is provided within the casing to restrict the amount of developing agent supplied to the developing region. A magnetic field is provided so that the developing agent forms a magnetic brush closing off the space between the surface of the developing agent carrying member and the inner wall of the casing. A gas exhaust path is provided in an upstream space of the developing region between the surface of the developing agent carrying member and the inner wall of the casing to exhaust gas generated in the upstream space.

Inventors: Satoh; Osamu (Kanagawa-ken, JP)

Assignee: Ricoh Company, Ltd.

International Classification: G03G 21/00 (20060101); G03G 15/09 (20060101)

Expiration Date: 9/05/02018