Back to results
US 8,128,087 B2Granted
Power transmitter for image forming apparatus and an image forming apparatus having the same
AssigneeSamsung Electronics Co., Ltd.
InventorDong-ha Choi
Life of this patent
Estimating the term…
Abstract
A power transmitter for an image forming apparatus transmitting power to a plurality of feeding rollers, including a plurality of feeding roller rotation shafts rotatably mounted at certain distances from one another and forming a feeding path of a printing medium by a plurality of feeding rollers which are coaxially mounted therewith; a driving unit rotating one of the plurality of feeding roller rotation shafts; and a feeding gear train mounted on the feeding path of the printing medium to transmit a rotational force of one of the plurality of feeding roller rotation shafts being rotated by the driving unit to the other feeding roller rotation shafts.
Claims17
A power transmitter of an image forming apparatus having an image forming unit, the power transmitter comprising:
- a plurality of feeding roller rotation shafts rotatably mounted at certain distances from one another and forming a feeding path of a print medium by a plurality of feeding rollers which are coaxially mounted therewith and feed the printing medium toward the image forming unit;
- a plurality of feeding idle rollers mounted at an upper part of the feeding path to rotate in contact with the plurality of feeding rollers;
- a driving unit comprising a driving motor and a driving gear train, the driving gear train transmitting power directly from the driving motor to only one of the plurality of feeding roller rotation shafts;
- and
- a feeding gear train disposed below a part of the feeding roller rotation shaft receiving power from the driving motor between the driving gear train and the feeding roller thereof to transmit a rotational force of the one of the plurality of feeding roller rotation shafts being rotated by the driving unit to another feeding roller rotation shaft,
- wherein the feeding gear train is located between the plurality of feeding rollers and the driving gear train in a direction orthogonal to the sheet feeding direction at a point closer to the plurality of feeding rollers.
3 more elements
A power transmitter of an image forming apparatus having an image forming unit, the power transmitter comprising:
- a driving unit comprising a driving motor and a driving gear train;
- a first feeding roller rotation shaft rotated by the driving unit and mounting a first plurality of the feeding rollers which feed a printing medium toward the image forming unit, the driving gear train transmitting power from the driving motor directly to the first feeding roller rotation shaft;
- a second feeding roller rotation shaft mounting a second plurality of the feeding rollers to feed a print medium to the first plurality of the feeding rollers;
- and
- a feeding gear train disposed below a part of the first feeding roller rotation shaft receiving power from the driving motor between the driving gear train and the first plurality of feeding rollers thereof and transmitting a rotational force of the first feeding roller rotation shaft to the second feeding roller rotation shaft,
- wherein the feeding gear train is located between the plurality of feeding rollers and the driving gear train in a direction orthogonal to the sheet feeding direction at a point closer to the plurality of feeding rollers, and
- wherein a first feeding idle roller is mounted at an upper part of the feeding path to rotate in contact with the first plurality of the feeding rollers and a second feeding idle roller is mounted at the upper part of the feeding path to rotate in contact with the second plurality of the feeding rollers.
4 more elements
An image forming apparatus having an image forming unit comprising:
- a frame;
- a feeding path cover mounted to the frame to form a feeding path of a print medium to the image forming unit;
- a first feeding roller rotation shaft mounted within the feeding path cover and rotatably supported by the frame;
- a first plurality of the feeding rollers coaxially connected with the first feeding roller rotation shaft;
- a first feeding idle roller mounted at an upper part of the feeding path cover to rotate in contact with the first plurality of the feeding rollers;
- a driving unit comprising a driving motor and a driving gear train, the driving unit being mounted in the frame, the driving gear train transmitting power directly from the driving motor to only the first feeding roller rotation shaft;
- a second feeding roller rotation shaft mounted at an upstream of the first feeding roller rotation shaft within the feeding path cover and rotatably supported by the feeding path cover;
- a second plurality of the feeding rollers coaxially connected with the second feeding roller rotation shaft;
- a second feeding idle roller mounted at the upper part of the feeding path cover to rotate in contact with the second plurality of the feeding rollers;
- and
- a feeding gear train disposed below a part of the first feeding roller rotation shaft receiving power from the driving motor between the driving gear train and the first plurality of feeding rollers thereof within the feeding path cover to transmit a rotational force of the first feeding roller rotation shaft to the second feeding roller rotation shaft,
- wherein the feeding gear train is located between the plurality of feeding rollers and the driving gear train in a direction orthogonal to the sheet feeding direction at a point closer to the plurality of feeding rollers.
9 more elements
Dependencies are inferred from the claim text.