Medium stacker and medium feed device

Abstract

A medium stacker may include a medium feed-out port which is formed at a lower end of the medium stacker and from which a lowest card-shaped medium of the plurality of the card-shaped media stored in the medium stacker is fed out, wherein a feed direction side for the card-shaped medium which is fed out from the medium feed-out port is referred to as a front side and an opposite side in a feed direction of the card-shaped medium is referred to as a rear side; a front side plate structuring a front side face of the medium stacker; and a rear side plate structuring a rear side face of the medium stacker. At least an upper end side of the rear side plate may be formed of an inclined part which is inclined to a rear side toward an upper side. The inclined part may be contacted with the card-shaped media stored in the medium stacker.

1 . A medium stacker in which a plurality of card-shaped media is stacked and stored, the medium stacker comprising:
 a medium feed-out port which is formed at a lower end of the medium stacker and from which a lowest card-shaped medium of the plurality of the card-shaped media stored in the medium stacker is fed out;   wherein a feed direction side for the card-shaped medium which is fed out from the medium feed-out port is referred to as a front side and an opposite side in a feed direction of the card-shaped medium is referred to as a rear side,   a front side plate structuring a front side face of the medium stacker; and   a rear side plate structuring a rear side face of the medium stacker;   wherein at least an upper end side of the rear side plate is formed of an inclined part which is inclined to a rear side toward an upper side; and   wherein the inclined part is contacted with the card-shaped media stored in the medium stacker.   
     
     
         2 . The medium stacker according to  claim 1 , wherein
 the rear side plate comprises a parallel part, which is a lower end side portion of the rear side plate and is parallel to an upper and lower direction, and the inclined part connected with an upper end of the parallel part,   the front side plate comprises a front side parallel part, which is a lower end side portion of the front side plate and is parallel to the upper and lower direction, and a front side inclined part which is connected with an upper end of the front side parallel part and is substantially parallel to the inclined part.   
     
     
         3 . The medium stacker according to  claim 1 , wherein a whole of the rear side plate is the inclined part which is inclined to the rear side toward the upper side. 
     
     
         4 . The medium stacker according to  claim 1 , wherein the card-shaped medium is a card which is accommodated in a bag. 
     
     
         5 . A medium feed device for use with a plurality of card-shaped media, the medium feed device comprising:
 a medium stacker in which the plurality of card-shaped media is stacked and stored; and   a medium feed mechanism structured to feed a lowest card-shaped medium of the card-shaped media stored in the medium stacker from the medium feed-out port;   wherein the medium stacker comprises:
 the medium feed-out port which is formed at a lower end of the medium stacker wherein a feed direction side for the card-shaped medium which is fed out from the medium feed-out port is referred to as a front side and an opposite side in a feed direction of the card-shaped medium is referred to as a rear side, 
 a front side plate structuring a front side face of the medium stacker; and 
 a rear side plate structuring a rear side face of the medium stacker; 
 wherein at least an upper end side of the rear side plate is formed of an inclined part which is inclined to a rear side toward an upper side; and 
 wherein the inclined part is contacted with the card-shaped media stored in the medium stacker. 
   
     
     
         6 . The medium stacker according to  claim 2 , wherein a detection opening part for detecting a supply time of the card-shaped media to the medium stacker based on presence or absence of the card-shaped media in the medium stacker is formed at least one of a portion of the parallel part in a vicinity of a boundary between the parallel part and the inclined part and a portion of the front side parallel part in a vicinity of a boundary between the front side parallel part and the front side inclined part. 
     
     
         7 . The medium feed device according to  claim 5 , wherein
 the rear side plate is structured of a parallel part, which is a lower end side portion of the rear side plate and is parallel to an upper and lower direction, and the inclined part connected with an upper end of the parallel part, and   the front side plate is structured of a front side parallel part, which is a lower end side portion of the front side plate and is parallel to the upper and lower direction, and a front side inclined part which is connected with an upper end of the front side parallel part and is substantially parallel to the inclined part.   
     
     
         8 . The medium feed device according to  claim 7 , wherein a detection opening part for detecting a supply time of the card-shaped media to the medium stacker based on presence or absence of the card-shaped media in the medium stacker is formed at least one of a portion of the parallel part in a vicinity of a boundary between the parallel part and the inclined part and a portion of the front side parallel part in a vicinity of a boundary between the front side parallel part and the front side inclined part. 
     
     
         9 . The medium feed device according to  claim 5 , wherein the card-shaped medium is a card which is accommodated in a bag.