Fusing device and image forming apparatus having the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJae-hoon Lee, Jin-yoon Kim
Life of this patent
Estimating the term…
Abstract
A fusing device to fuse an image to a printing medium, the fusing device including: a heating roller; a first pressing roller, which presses the printing medium against the heating roller; and a second pressing roller which attached to the first pressing roller, to detach the printing medium from the first pressing roller. The first and second pressing rollers are biased against the heating roller such that the first and second pressing rollers move according to a change in a position of the heating roller.
Claims22
A fusing device to fuse an image to a printing medium, the fusing device comprising:
- a heating roller;
- a first pressing roller to press the printing medium against the heating roller to fuse the image and to move in accordance with a change in position of the heating roller;
- a second pressing roller connected to the first pressing roller, to detach the printing medium from the heating roller and to move with the first pressing roller, in accordance with the change in position of the heating roller;
- a holder to support the first pressing roller, wherein the holder comprises a first elastic member to bias the first pressing roller toward the heating roller;
- and
- an arm member to support the second pressing roller, wherein the arm member comprises a second elastic member to bias the second pressing roller toward the heating roller.
A fusing device to fuse an image to a printing medium, the fusing device comprising:
- a heating roller;
- a first pressing roller to press the printing medium against the heating roller;
- a second pressing roller to detach the printing medium from the heating roller;
- an elastic pressing unit comprising a first elastic member to bias the first pressing roller against the heating roller;
- and
- an engaging pressing unit to transfer a portion of a biasing pressure applied to the first pressing roller by the elastic pressing unit, to the second pressing roller, such that the second pressing roller presses the printing medium,
- wherein the engaging pressing unit comprises a second elastic member to bias the second pressing roller toward the heating roller.
A fusing device to fuse an image to a printing medium, the fusing device comprising:
- a heating roller;
- a first pressing roller to press the printing medium against the heating roller;
- a second pressing roller to detach the printing medium from the heating roller;
- an elastic pressing unit comprising a first elastic member to bias the first pressing roller against the heating roller, according to a change in a position of the heating roller;
- an arm member to connect the second pressing roller to the first pressing roller, wherein the arm member comprises a second elastic member to bias the second pressing roller against the heating roller, according to the change in the position of the heating roller.
A fusing device to fuse an image to a printing medium, the fusing device comprising:
- a heating roller;
- a first pressing roller to form a first nip to press the printing medium against the heating roller;
- a second pressing roller to form a second nip to detach the printing medium from the heating roller;
- an elastic pressing unit comprising a first elastic member to bias the first pressing roller and the second pressing roller against the heating roller, to maintain the first and second nips during a change in a position of the heating roller;
- and
- an engaging pressing unit comprising a second elastic member to bias the second pressing roller against the heating roller according to the change in the position of the heating roller.
Dependencies are inferred from the claim text.