Developing apparatus
AssigneeCanon Kabushiki Kaisha
InventorsShigeo Miyabe, Tadayuki Tsuda, Shinjiro Toba
Life of this patent
Estimating the term…
Abstract
A developing device includes a rotatable developer carrying member for carring a developer; a magnet roller provided in the developer carrying member; a first electrode portion connected electrically with the developer carrying member, the first electrode portion being rotatable with the developer carrying member; a second electrode portion provided with a contact portion in sliding contact with the first electrode portion, the contact portion being disposed outside a longitudinal end portion of the magnet roller substantially at a center of rotation of the developer carrying member.
Claims22
A developing device comprising:
- a rotatable developer carrying member for carrying a developer;
- a magnet provided in said developer carrying member;
- a bearing supporting an end portion of said magnet, said bearing being provided inside said developer carrying member and being rotatable integrally with said developer carrying member;
- a first electrode portion electrically connected with said developer carrying member, said first electrode portion being rotatable with said developer carrying member;
- and
- a second electrode portion for electrically connecting said first electrode portion and an outside of said developer carrying member, and
- wherein a contact portion between said first electrode portion and said second electrode portion is disposed outside said bearing with respect to a longitudinal direction of said developer carrying member.
Dependencies are inferred from the claim text.