Oki Electric Industry Co., Ltd.

Oki Data Corporation

Tetsuji Kojima

Masayuki A Suzuki

Atsushi Kobayashi

Tetsu Koyama

Shinichi Otani

Shigenori Koido

Takanori Mimura

Yasushi Nakasone

Matsusaburo Noguchi

Naoki Sunaga

Shigemi Hagiwara

Hiromi Miyashita

A developer cartridge includes a developer storing portion that stores a developer and has a first opening for taking out the developer, and a shutter member slidably mounted to the developer storing portion so as to open and close the first opening. The shutter member has a resilient-member-fixing portion to which a resilient member is fixed for preventing leakage of the developer through between the shutter member and the developer storing portion. A deflectable part is provided on at least one of the resilient-member-fixing portion and a peripheral portion of the first opening of the developer storing portion.

Developer cartridge adapted to restrict leakage of developer

Toner cartridge

Image drum cartridge

Printer provided with an image reading unit

A development device has a developer tank for housing a developer, a development roll disposed within the developer tank on one end portion thereof, a magnetic roll included in the development roll via a sleeve for attracting the developer onto the circumferential surface of the sleeve, a photosensitive drum disposed facing to the development tank keeping a finely prescribed distance thereto for carrying an electrostatic latent image thereon, and a magnetic member disposed in the vicinity of an opening for development in the development tank axially of the development roll for allowing lines of magnetic force from the magnetic roll to pass therethrough thereby preventing the developer on the photosensitive drum from being substantially affected by a magnetic field from the magnet roll.

Development device

A cleaning device for a photosensitive drum a rotatable cylindrical device including a permanent magnet, for carrying toner wiped off the surface of the photosensitive drum, a scraper for making contact with the peripheral surface of the rotatable cylindrical device, and a rotary blade formed of a magnetic material. The rotary blade scrapes off the toner blocked by the scraper upon rotation of the rotary blade so as to force the toner to fall off for toner recovery.

Photosensitive drum cleaning device in electrophotographic recording

Growing community of inventors

Tokyo, Japan

Tetsuji Kojima