Fuji Xerox Co., Ltd.

Shiho Matsuda

Tomoyuki Yoshii

Kenta Urayama

Fumiyuki Honda

Jun Abe

Takashi Ochi

Yoshifumi Ozaki

Yoshitaka Nakajima

Masanori Kato

Norihiro Tamazawa

Shinji Okuyama

Junichi Uchiyama

Yasuaki Watanabe

An image forming apparatus includes an image carrier that holds an image, a developer carrier that holds a developer to be supplied to the image carrier, a transport member that transports the developer in an axial direction of the developer carrier, and a restraint member that restrains the developer, which has scattered as a result of being transported by the transport member, from moving toward the developer carrier.

Image forming apparatus and developing device

A developing device includes a developing sleeve and a regulation portion. The developing sleeve includes a magnetism generating portion to which magnetic poles are attached. The developing sleeve holds a developer on an outer circumferential surface. The regulation portion includes a magnetic plate. A first segment connecting a peak position of the magnetic pole disposed at a position facing the magnetic plate and an axial center of the developing sleeve has an angle, with respect to a second segment connecting the magnetic plate and the axial center, equal to or less than 7 degrees on a downstream side in a rotation direction of the developing sleeve and equal to or less than 6 degrees on an upstream side in the rotation direction. An angle of a half value width of the magnetic pole is equal to or greater than 41 degrees to equal to or less than 52 degrees.

Developing device and image forming apparatus

Growing community of inventors

Kanagawa, Japan

Shiho Matsuda