Medium feeding device and image reading apparatus
AssigneeSeiko Epson Corporation
InventorsTakayuki SHIOTA, Kazutoshi NISHIDA, Kiyotaka NAKAMURA
Life of this patent
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Abstract
A medium feeding device includes a medium placing portion, a feeding roller that feeds paper, a medium movement detecting portion that is positioned on a placing region of the paper of the medium placing portion in a medium feeding direction and is capable of detecting movement of the paper being fed in a width direction intersecting the medium feeding direction, and a controller that stops feeding of the paper in a case in which a physical quantity relating to movement of paper in the width direction exceeds a predetermined threshold based on a detected result by the medium movement detecting portion.
Claims16
A medium feeding device comprising:
- a medium placing portion on which a medium is placed;
- a feeding roller that feeds the medium placed on the medium placing portion by coming into contact with a surface of the medium facing the medium placing portion and being rotated;
- a medium movement detecting portion that is positioned in a placing region of the medium on the medium placing portion and is capable of detecting movement of the medium being fed by the feeding roller in a width direction intersecting a medium feeding direction;
- and
- a controller that stops feeding of the medium in a case in which a physical quantity relating to the movement of the medium in the width direction based on a detected result by the medium movement detecting portion exceeds a predetermined threshold.
A medium feeding device comprising:
- a medium placing portion on which a medium is placed;
- a feeding roller that feeds the medium placed on the medium placing portion by coming into contact with a surface of the medium facing the medium placing portion and being rotated;
- a medium movement detecting portion that is positioned in a placing region of the medium on the medium placing portion in a medium feeding direction and is capable of detecting movement of the medium being fed by the feeding roller in the medium feeding direction;
- and
- a controller that stops feeding of the medium in a case in which a stop section is shorter than a predetermined first threshold when a moving section, the stop section, and a moving section of the medium in the medium feeding direction are detected by the medium movement detecting portion in this order based on a detected result by the medium movement detecting portion.
A medium feeding device comprising:
- a medium placing portion on which a medium is placed;
- a feeding roller that feeds the medium placed on the medium placing portion by coming into contact with a surface of the medium facing the medium placing portion and being rotated;
- a first medium movement detecting portion and a second medium movement detecting portion, as a medium movement detecting portion, that are positioned in a placing region of the medium on the medium placing portion in the medium feeding direction, are provided with a gap therebetween in a width direction intersecting the medium feeding direction as a pair, and are capable of detecting movement of the medium being fed by the feeding roller in the medium feeding direction;
- and
- a controller that stops feeding of the medium in a case in which a difference between a physical quantity relating to movement of the medium in the medium feeding direction being detected by the first medium movement detecting portion and a physical quantity relating to movement of the medium in the medium feeding direction being detected by the second medium movement detecting portion exceeds a predetermined threshold.
Dependencies are inferred from the claim text.