Papaer sheet storage device, and control method and control program for paper sheet storage device

Abstract

A paper sheet storage device comprises paper sheet transporting units 401 to 406 having a transport path 450 for paper sheets and for transporting the paper sheets; a paper sheet feeder 250 for feeding a paper sheet onto the transport path; sensors 301 to 303, disposed on the transport path, for detecting passage of a paper sheet; a transport speed acquiring unit for acquiring the transport speed of a paper sheet based on detection by the sensors; and a controller 210 for controlling the paper sheet transport unit and the paper sheet feeder. In the event that the acquired transport speed of a paper sheet is slower than a prescribed speed, the controller causes the paper sheet feeder to halt the feeding of paper sheets, and operates in reverse a portion of the paper sheet transport unit that is situated closer to the paper sheet feeder than the slow moving paper sheet.

1 . A paper sheet storage device comprising:
 a paper sheet transport unit having a transport path for paper sheets;   a paper sheet feeder for feeding paper sheets onto the transport path;   a sensor, disposed on the transport path, for detecting passage of a paper sheet;   a transport speed acquiring unit for acquiring the transport speed of the paper sheet based on detection by the sensor; and   a controller for controlling the paper sheet transport unit and the paper sheet feeder,   wherein in the event that the acquired transport speed of a paper sheet is slower than a prescribed speed, the controller causes the paper sheet feeder to halt the feeding of paper sheets, and operates in reverse a portion of the paper sheet transport unit that is situated closer to the paper sheet feeder than the slow moving paper sheet.   
   
   
       2 . The paper sheet storage device according to  claim 1 , wherein
 the device includes a plurality of the sensors including first and second sensors that are disposed adjacently with each other; and   the transport speed acquiring unit acquires the speed of motion of a paper sheet based on a gap between first and second sensors, and a difference between a point in time that the paper sheet passes the first sensor and another point in time that the paper sheet passes the second sensor.   
   
   
       3 . The paper sheet storage device according to  claim 1 ,
 the device including the plurality of the sensors including first and second sensors that are disposed adjacently with each other and further comprising:   an arrival time predicting unit for predicting, from a point in time that the paper sheet passes the first sensor, arrival time of the paper sheet at the second sensor;   wherein in the event that the paper sheet fails to arrive at the second sensor within a predetermined time interval starting from the predicted arrival time, the controller causes the paper sheet feeder to halt the feed of paper sheets, and operates in reverse a portion of the paper sheet transport unit, that is situated closer to the paper sheet feeder than the first sensor.   
   
   
       4 . A method of controlling a paper sheet accepting device comprising the steps of:
 feeding paper sheets from a paper sheet feeder;   using a paper sheet transport unit to transport paper sheets;   using a sensor to detect passage of a paper sheet;   determining the transport speed of the paper sheet from the paper sheet passage time; and   in the event that the transport speed of a paper sheet is slower than a prescribed transport speed, halting the feed of paper sheets from the paper sheet feeder, and then reverse-feeding the following paper sheets to return to the paper sheet feeder.   
   
   
       5 . A computer program, stored on a computer readable medium, for controlling a paper sheet accepting device wherein the program accomplishes the functions of:
 feeding paper sheets;   transporting paper sheets;   detecting passage of a paper sheet;   determining the transport speed of the paper sheet from the passage time of the paper sheet; and   in the event that the determined transport speed of a paper sheet is slower than a prescribed transport speed, halting the feed of paper sheets by the paper sheet feeder, and then reverse-feeding the following paper sheets by the paper sheet transport unit to return to the paper sheet feeder.