Transportation apparatus

Abstract

A transporting apparatus which is capable of restraining multi feed of transported media is provided. The transporting apparatus includes a first arm mounted on a supporting shaft so as to be pivotable with respect to the supporting shaft about a first pivotal portion, a second arm fixed with a feed roller and mounted on the first arm so as to be pivotable with respect to the first arm about the second pivotal portion, and a torsion coil spring acting on the second pivotal portion so as to urge the feed roller toward the sheet in a just-before-transport state and a sheet transporting state.

1 . A transporting apparatus comprising:
 a transporting apparatus body configured to transport a transported medium by a feed roller;   a first arm to be mounted on the transporting apparatus body so as to be pivotable about a first pivotal portion with respect to the transporting apparatus body;   a second arm mounted on the first arm so as to be pivotable about a second pivotal portion with respect to the first arm and fixed with the feed roller at a position opposite from the first pivotal portion with respect to the second pivotal portion; and   an urging member acting on the second pivotal portion so as to urge the feed roller toward the transported medium.   
     
     
         2 . The transporting apparatus according to  claim 1 , comprising:
 a separating mechanism configured to separate a first transported medium in abutment with the feed roller from a second transported medium adjacent to the first transported medium in a stacking direction,   wherein the second arm moves toward a direction in which a rotational force of the feed roller acts on the first transported medium against an urging force of the urging member when a load for separating the first transported medium and the second transported medium exerted by the separating mechanism is large, whereby the urging force of the feed roller with respect to the first transported medium increases.   
     
     
         3 . The transporting apparatus according to  claim 1 , wherein a first inter-axis distance, which is a distance connecting the first pivotal portion and the second pivotal portion with a straight line is smaller than a second inter-axis distance, which is a distance connecting the second pivotal portion and the axis of rotation of the feed roller with a straight line. 
     
     
         4 . The transporting apparatus according to  claim 1 , wherein when a state in which the rotation of the feed roller is stopped is changed to a state in which the rotational force of the feed roller is transmitted to the transported medium, the second pivotal portion pivots so that an acute angle formed by an axial line connecting the axis of rotation of the feed roller and the second pivotal portion and the transported medium becomes minimum. 
     
     
         5 . The transporting apparatus according to  claim 1 , wherein the transporting apparatus is provided with a placing surface for placing the transported medium at a position opposing the feed roller,
 a cover configured to cover the first pivotal portion from the outside thereof in the direction of the radius of the pivotal movement of the first pivotal portion, and restrict the number of the transported media to be placed by a gap formed in cooperation with the placing surface is provided at a portion of the first pivotal portion opposing the transported medium, and   the cover is provided over a range of the pivotal movement of the first arm in association with the action of the feed roller which transports the transported medium.