Developing device usable with image forming apparatus and developer delivery device thereof including a plurality of rotatable delivery members
AssigneeSamsung Electronics Co., Ltd.
InventorsJi Won Moon, Ki Jae Do, In Cheol Jeon
Life of this patent
Estimating the term…
Abstract
A developing device usable with an image forming apparatus having a developer delivery device of an improved drive configuration. The developing device includes a developer storage unit, a rotating member arranged in the developer storage unit, and a plurality of developer delivery members arranged in an axial direction of the rotating member to be rotated around the rotating member upon receiving rotation power from the rotating member. A first power-transmission structure may be provided between at least one of the plurality of developer delivery members and the rotating member to allow slip therebetween.
Claims18
A developing device usable with an image forming apparatus, the developing device comprising:
- a developer storage unit;
- a first rotating member arranged in the developer storage unit;
- a plurality of developer delivery members arranged in an axial direction of the first rotating member to be rotated around the first rotating member upon receiving rotation power from the first rotating member;
- and
- a first power-transmission structure to connect at least one of the plurality of developer delivery members and the first rotating member to each other, such that there is slip between the at least one of the plurality of developer delivery members and the first rotating member, the first power-transmission structure including:
- at least one protrusion to protrude from one of the at least one of the plurality of developer delivery members and the first rotating member;
- and
- at least one receiving hole formed in the other one of the at least one of the plurality of developer delivery members and the first rotating member, so as to receive the protrusion,
- wherein the at least one protrusion includes a slip guide portion formed at a surface thereof to guide the slip between the receiving hole and the protrusion.
A developing device usable with an image forming apparatus, the developing device comprising:
- a developer storage unit;
- a first rotating member arranged in the developer storage unit;
- a plurality of developer delivery members arranged in an axial direction of the first rotating member to be rotated around the first rotating member upon receiving rotation power from the first rotating member, the plurality of developer delivery members including:
- a first developer delivery member and a third developer delivery member arranged at opposite sides of the first rotating member in the axial direction;
- and
- a second developer delivery member arranged between the first developer delivery member and the third developer delivery member,
- wherein at least one of the first developer delivery member and the third developer delivery member is movable relative to the second developer delivery member.
A developing device usable with an image forming apparatus, the developing device comprising:
- a housing having a developer storage unit defined therein;
- a first rotating member and a second rotating member arranged in the developer storage unit;
- and
- a first, second, and third developer delivery belts arranged in an axial direction of the first rotating member and rotatably supported by the first rotating member and the second rotating member,
- wherein at least one of the first, second, and third developer delivery belts is rotatable relative to the first rotating member.
A developing device usable with an image forming apparatus, comprising:
- a developer storage unit to store developer therein and having a predetermined width;
- a plurality of developer delivery members adjacent to each other and extending along the predetermined width within the developer storage unit;
- a drive member to drive the plurality of developer delivery members to deliver developer along a lengthwise direction of a developed receiving chamber;
- a plurality of protrusions formed on an outer surface of the drive member;
- and
- a plurality of receiving holes formed on the plurality of developer delivery members to receive the plurality of protrusions.
Dependencies are inferred from the claim text.