Paper sheet positioning apparatus

Abstract

A paper sheet positioning apparatus includes a pair of conveying belts which convey banknotes along a conveyance path, an optical sensor array which measures a shift amount of the banknotes conveyed by the pair of conveying belts on the conveyance path, and two units of shift correction devices which correct the shift amount measured by the optical sensor array.

1 . A paper sheet positioning apparatus comprising: 
 a conveying device which conveys paper sheets along a conveyance path;    a shift amount measuring device which measures a shift amount of the paper sheets conveyed by the conveying device on the conveyance path; and    a plurality of shift correction devices which are arranged along the conveying direction of the paper sheets, and correct the shift amount measured by the shift amount measuring device.    
   
   
       2 . A paper sheet positioning apparatus according to  claim 1 , wherein two units of the shift correction devices are arranged.  
   
   
       3 . A paper sheet positioning apparatus according to  claim 2 , wherein the two units of the shift correction devices correct, at a time, half of the shift amount measured by the shift amount measuring device.  
   
   
       4 . A paper sheet positioning apparatus according to  claim 2 , wherein, when the shift amount measured by the shift amount measuring device is below twice a minimum value which is correctable by the shift correction devices, only the first shift correction device corrects the shift amount.  
   
   
       5 . A paper sheet positioning apparatus according to  claim 2 , wherein, when the shift amount measured by the shift amount measuring device is below a minimum value which is correctable by the shift correction devices, the first shift correction device corrects a sum shift amount obtained by adding the correctable minimum value to the shift amount, and thereafter, the second shift correction device corrects the correctable minimum value in the reverse direction.  
   
   
       6 . A paper sheet positioning apparatus according to  claim 2 , further comprising: a measuring device which measures a correction amount of the paper sheets whose shift is corrected by the shift correction device located at the upstream side in the conveying direction of the paper sheets, wherein, on the basis of the correction value measured by the measuring device, the shift correction amount by the shift correction device located at the downstream side in the conveying direction of the paper sheets is controlled.  
   
   
       7 . A paper sheet positioning apparatus comprising: 
 a conveying device which conveys paper sheets along a conveyance path;    a skew amount measuring device which measures a skew amount of the paper sheets conveyed by the conveying device on the conveyance path; and    a plurality of skew correction devices which are arranged along the conveying direction of the paper sheets, and correct the skew amount measured by the skew amount measuring device.    
   
   
       8 . A paper sheet positioning apparatus according to  claim 7 , wherein two units of the skew correction devices are arranged.  
   
   
       9 . A paper sheet positioning apparatus according to  claim 8 , wherein the two units of the skew correction devices correct, at a time, half of the skew amount measured by the skew amount measuring device.  
   
   
       10 . A paper sheet positioning apparatus according to  claim 8 , wherein, when the skew amount measured by the skew amount measuring device is below twice a minimum value which is correctable by the skew correction devices, only the first skew correction device corrects the skew amount.  
   
   
       11 . A paper sheet positioning apparatus according to  claim 8 , wherein, when the skew amount measured by the skew amount measuring device is below a minimum value which is correctable by the skew correction devices, the first skew correction device makes a correction of an angle obtained by adding the correctable minimum value to the skew amount, and thereafter, the second skew correction device corrects the correctable minimum value in the reverse direction.  
   
   
       12 . A paper sheet positioning apparatus according to  claim 8 , further comprising: a measuring device which measures a correction amount of the paper sheets whose skew is corrected by the skew correction device located at the upstream side in the conveying direction of the paper sheets, wherein, on the basis of the correction value measured by the measuring device, the skew correction amount by the skew correction device located at the downstream side in the conveying direction of the paper sheets is controlled.  
   
   
       13 . A paper sheet positioning apparatus comprising: 
 a conveying device which conveys paper sheets along a conveyance path;    a measuring device which measures a shift amount and a skew amount of the paper sheets conveyed by the conveying device on the conveyance path;    a plurality of shift correction devices which are arranged along the conveying direction of the paper sheets, and correct the shift amount measured by the measuring device; and    a plurality of skew correction devices which are arranged along the conveying direction of the paper sheets, and correct the skew amount measured by the measuring device.    
   
   
       14 . A paper sheet positioning apparatus according to  claim 13 , wherein two units of the shift correction devices and two units of the skew correction devices are arranged.  
   
   
       15 . A paper sheet positioning apparatus according to  claim 13 , wherein the two units of the shift correction devices correct, at a time, half of the shift amount measured by the measuring device, and the two units of the skew correction devices correct, at a time, half of the skew amount measured by the measuring device.  
   
   
       16 . A paper sheet positioning apparatus according to  claim 14 , wherein, when the shift amount measured by the measuring device is below twice a minimum value which is correctable by the shift correction devices, only the first shift correction device corrects the shift amount, and when the skew amount measured by the measuring device is below twice a minimum value which is correctable by the skew correction devices, only the first skew correction device corrects the skew amount.  
   
   
       17 . A paper sheet positioning apparatus according to  claim 14 , wherein, when the shift amount measured by the measuring device is below a minimum value which is correctable by the shift correction devices, the first shift correction device corrects a sum shift amount obtained by adding the correctable minimum value to the shift amount, and thereafter, the second shift correction device corrects the correctable minimum value in the reverse direction, and when the skew amount measured by the measuring device is below a minimum value which is correctable by the skew correction devices, the first skew correction device makes a correction of an angle obtained by adding the correctable minimum value to the skew amount, and thereafter, the second skew correction device corrects the correctable minimum value in the reverse direction.  
   
   
       18 . A paper sheet positioning apparatus according to  claim 14 , further comprising: 
 a measuring device which measures a correction amount of the paper sheets whose shift is corrected by the shift correction device located at the upstream side in the conveying direction of the paper sheets, wherein, on the basis of the correction value measured by the measuring device, the shift correction amount by the shift correction device located at the downstream side in the conveying direction of the paper sheets is controlled; and    a measuring device which measures a correction amount of the paper sheets whose skew is corrected by the skew correction device located at the upstream side in the conveying direction of the paper sheets,    wherein, on the basis of the correction value measured by the measuring device, the skew correction amount by the skew correction device located at the downstream side in the conveying direction of the paper sheets is controlled.