CPC B65H 7/14 (2013.01) [B65H 3/063 (2013.01); B65H 7/08 (2013.01); B65H 7/10 (2013.01); B65H 7/18 (2013.01); B65H 2513/10 (2013.01); B65H 2513/40 (2013.01)] | 8 Claims |
1. A medium transporting device comprising:
a placement tray on which a medium is placed;
a feeding roller that is in contact with a first surface of the medium, which is a surface facing the placement tray, and feeds the medium;
a separating roller that is in contact with a second surface of the
medium, which is a surface opposite to the first surface, and performs separation by nipping a document between the separating roller and the feeding roller;
a feeder that feeds the medium in a transporting direction; and
a two-dimensional sensor that is disposed to face a surface of the medium transported in the transporting direction and detects a motion of the medium in a two-dimensional coordinate system including a first axis and a second axis,
wherein the two-dimensional sensor is provided on the placement tray positioned upstream of the feeding roller and provided in a state in which the first axis and the second axis are inclined with respect to the transporting direction,
wherein a controller that receives a detection value in the first axis direction and a detection value in the second axis direction from the two-dimensional sensor stops the feeder when a difference between a movement speed in the first axis direction and a movement speed in the second axis direction detected by the two-dimensional sensor exceeds a threshold value during an operation of the feeder, and
wherein the threshold value is a value set according to deviation of the inclination angles of the first axis and the second axis with respect to the transporting direction from a target value.
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