Developing device, process cartridge, and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsFumiaki Nakamura, Takahiro Miyakawa
Life of this patent
Estimating the term…
Abstract
A developing device includes a developer agitation portion including a plurality of trap agitation blades arranged in an axis direction of the developer agitation portion. A plurality of agitation blade portions is arranged with being shifted from one another in a circumferential direction and a longitudinal direction of the developer agitation portion. Two adjacent trap agitation blades constituting the agitation blade portion are arranged at an angle so as to make a space between the two adjacent trap agitation blades gradually wider upstream with respect to a rotation direction of the developer agitation portion.
Claims13
A developing device comprising:
- a developer storage portion configured to store developer;
- and
- a developer agitation portion configured to rotate in the developer storage portion to agitate developer;
- wherein the developer agitation portion includes a plurality of trap agitation blades arranged in an axis direction of the developer agitation portion, and each of the trap agitation blades is disposed in a direction intersecting with the axis direction of the developer agitation portion,
- wherein a plurality of agitation blade portions, each including a set of two trap agitation blades adjacent in the axis direction of the developer agitation portion, is arranged with being shifted from one another in a circumferential direction and a longitudinal direction of the developer agitation portion, and
- wherein the two adjacent trap agitation blades constituting the agitation blade portion are arranged at an angle so as to make a space between the two adjacent trap agitation blades gradually wider upstream with respect to a rotation direction of the developer agitation portion.
Dependencies are inferred from the claim text.