Patent Publication Number: US-6669136-B2

Title: Paper money handling device

Description:
BACKGROUND OF THE INVENTION 
     This invention relates to a paper money handling device for receiving and delivering paper money. More particularly, this invention relates to a control technology of a tape conveying speed in a paper money receipt/delivery device (e.g. a temporary depository) for receiving and delivering paper money by winding and rewinding a tape between a wheel and a reel. 
     Some paper money handling devices for receiving and delivering paper money are equipped with a paper money receipt/delivery device that receives paper money by winding a tape and paper money on a wheel and delivers paper money by rewinding the tape onto the reel, on the contrary. The paper money receipt/delivery device having such a construction has the merit that a compact and economical device can be achieved with a simple construction. 
     JP-A-10-181972, for example, discloses a paper money receipt/delivery device for executing a receipt/delivery processing of paper money, that has a construction in which two tapes are wound onto separate reels, a wheel winds the tape together with paper money while paper money is interposed between the two tapes, and the tape is wound and rewound between the reel for winding only the tape and the wheel to execute the paper money receipt/delivery processing. 
     Among the prior art examples described above, there is also known a paper money receipt/delivery device that is equipped with means for controlling driving means for the reel and the wheel to control the tape speed when paper money is received and delivered. However, such a paper money receipt/delivery device involves the following problems. 
     The conventional devices include a system that calculates an outer diameter of the wheel for winding the tape with paper money and calculates a winding speed from the wheel outer diameter, a system that calculates the present outer diameter of the wheel on the basis of the number of times of winding of the tape, a tape thickness and a paper money thickness, and calculates a tape moving speed on the outer periphery of the wheel from the wheel outer diameter so calculated and from a pulse interval time acquired by pulse interval counting means for measuring an interval time of pulses generated by rotating pulse generation means that generates the pulses in such a fashion as to correspond to the rotating speed of the wheel, a system that calculates the diameter of the wheel by using a formula for determining the diameter of a corresponding circle, to the tape outer periphery, from the total sectional area of the sum of a winding sectional area of the tape as viewed from the number of paper money wound up and the sectional area of a winding drum, and a system that determines the number of times of winding of the tape onto the wheel by using a calculation formula expressed by a recurrence formula calculated by a paper note length and a gap distance between paper money received from an initial diameter of tape winding. 
     In this case, variance develops in the outer diameter of the wheel due to the difference of the thickness and size resulting from the difference of kind of paper money or due to the difference of paper money storing gap. It is therefore difficult in practice to estimate the outer circumferential diameter of the wheel from the number of paper money received, and variance develops also in the tape moving speed that is set on the basis of the outer circumferential diameter of the wheel. To improve the processing speed, it would be conceivable to increase the conveying speed of paper money, to reduce the mutual transfer gap of paper money or to use the direction of the minor side of paper money as the conveying direction, but such methods result in variance of the wheel outer diameter. Nonetheless, mechanical detection of the outer circumferential diameter of the wheel invites the increase of the cost. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide an economical paper money handling device which can accurately acquire a conveying speed of a conveying path and a receiving/delivering speed of a tape when paper money is received one by one and is delivered one by one, and in which jamming difficultly occurs. 
     To accomplish the object described above, a paper money handling device according to one aspect of the present invention includes paper money conveying means for conveying paper money, a wheel connected to one of the ends of a tape, for winding paper money with the tape, a reel connected to the other end of the tape, for rewinding the tape wound on the wheel, wheel driving means for driving the wheel, and reel driving means for driving the reel, the wheel driving means and the reel driving means winding and rewinding the tape between the wheel and the reel when they are driven to thereby wind paper money conveyed from the paper money conveying means with the tape onto the wheel, or rewinding the tape wound with paper money on the wheel to the reel and delivering paper money to the paper money conveying means. When a predetermined amount of the tape is wound on the wheel, an initial diameter of the reel is calculated on the basis of an add-up value of pulses generated from an encoder in such a fashion as to correspond to a rotating angle of the wheel and an add-up value of pulses generated by an encoder in such a fashion as to correspond to a rotating angle of the reel, a moving speed of the tape is calculated by use of this initial diameter, and the wheel driving means and the reel driving means are controlled so that the moving speed calculated by moving speed calculation means attains a predetermined set value. 
     Additionally, jamming can be prevented by setting the set speed to a speed higher than the conveying speed of the paper money conveying means when the wheel rotates in the tape winding direction, and setting it to a lower speed than the paper money conveying means when the wheel rotates in the tape delivering direction. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a side view useful for explaining a paper money receipt/delivery operation of a paper money receipt/delivery device according to the present invention; 
     FIG. 2 is a side view useful for explaining a paper money delivery operation of the paper money receipt/delivery device according to the present invention; 
     FIG. 3 is a conceptual view of the paper money receipt/delivery device according to the present invention; 
     FIG. 4 is a conceptual view useful for explaining calculation of a reel outer diameter at an initial stage of receiving paper money; 
     FIG. 5 is a structural view of a control circuit for controlling a tape speed; 
     FIG. 6 is a flowchart useful for explaining a paper money receipt preparation operation; 
     FIG. 7 is a flowchart useful for explaining a paper money receipt operation (No. 1); 
     FIG. 8 is a flowchart useful for explaining a paper money receipt operation (No. 2); 
     FIG. 9 is a flowchart useful for explaining a paper money receipt operation (No. 3); 
     FIG. 10 is a flowchart useful for explaining a paper money delivery processing (No. 1); 
     FIG. 11 is a flowchart useful for explaining a paper money delivery processing (No. 2); 
     FIG. 12 is a flowchart useful for explaining a paper money delivery processing (No. 3); and 
     FIG. 13 is a schematic view of a paper money handling device having the paper money receipt/delivery device of the present invention mounted thereto. 
    
    
     DESCRIPTION OF THE EMBODIMENTS 
     A paper money receipt/delivery device according to an embodiment of the present invention will be explained prior to the explanation of a tape speed controller of the present invention. 
     FIG. 13 is a sectional view of a portion to which the paper money receipt/delivery device (temporary depository)  40  is to be applied. The flow of paper money at the time of a receipt operation will be hereby explained. 
     When paper money is put into a receipt/delivery port  20  handling paper money of various kinds and sizes in mixture, paper money is separated one by one at the receipt/delivery port  20  and is then delivered to a conveying path  501 . Paper money  15   a  thus delivered passes through the conveying path  501 , is classified by a classifying device  30  in accordance with the kind and is then stored temporarily in a paper money receipt/delivery device  40  while various kinds of paper money remain in mixture. 
     A notifying device, not shown, notifies a user of the amount of paper money  15   a  collectively charged into the receipt/delivery port  20  on the basis of the classification result of the classifying device  30 . After the amount is confirmed and the transaction is thus completed, various kinds of paper money in mixture inside the paper money receipt/delivery device  40  are delivered through the conveying path  501 , and are stored in the depositories  80   a ,  80   b  and  60  in accordance with the kinds of paper money on the basis of the classification result of the classifying device  30 . 
     Next, the delivery operation will be explained. 
     The paper money handling device  1  separates various kinds of paper money in the designated amount from the depositories  80   a  and  80   b  corresponding to the kinds of paper money. Paper money  15   b  so separated passes through the conveying path  501  from a conveying path  901  and is subjected to classification of the kind by the classifying device  30 . After the result proves as normal, normal paper money  15   b  is transferred to the receipt/delivery port  20  and is delivered. Paper money  15   b  that is not judged by the classifying device  30  as being suitable for delivery depending on the conveying condition and the note condition is temporarily stored in the paper money receipt/delivery device  40 . After the paying transaction is completed, paper money inside the paper money receipt/delivery device  40  is delivered and is stored in the depository  601  from the conveying path  501   c  through conveying paths  501   i  and  902   d.    
     As explained above, the paper money receipt/delivery device  40  according to the present invention is applied to a paper money receipt/delivery device  40  of the type that is used for temporarily storing paper money before this paper money is stored in the depositories  60 ,  80   a  and  80   b.    
     Next, an embodiment of the paper money receipt/delivery device according to the present invention will be explained. 
     FIGS. 1 and 2 show the paper money receipt/delivery device in the present invention. This paper money receipt/delivery device is constituted as a temporary depository  40  and is built in the paper money handling device  1 . Paper money  15  is received and delivered with the minor side of paper money as the conveying direction. 
     In the paper money receipt/delivery device, the rotating direction of each of the later-appearing rollers and drums and the traveling direction of a tape are reversed depending on the receipt and delivery operations of paper money, but in the following explanation, the direction of arrow  1  will represent the paper money receiving direction and the direction of arrow  2 , the paper money delivering direction. 
     This paper money receipt/delivery device uses one sheet of tape T, and includes a reel  106  for winding only the tape T (without paper money). When paper money  15  is received, the tape T delivered from the reel  106  and paper money  15  conveyed through a conveying path  11  and through a space between rollers  108   a  and  108   b  are guided to a wheel  105  for winding them up while they are in superposition. When paper money  15  is delivered, the tape T is delivered from the wheel  105  while it is superposed with paper money  15 . A guide  112  provided to a paper money receipt/delivery portion separates the tape T from paper money  15 , and an idler roller (driven roller)  103  guides the tape T so separated to the reel  106 . 
     The reel  106  is provided with a reel driving motor  107  driven for rotation through a torque limiter  110  for limiting tension. The reel  106  can detect the number of revolution by means of an encoder  114  (that generates pulses P 1  times per revolution). Unlike a rotating speed, the term “number of revolution” hereby corresponds to a rotating angle, and the number of revolution can be determined as a number of revolution per unit time, whenever necessary. 
     The wheel  105  is fitted to the back of the idler roller  103 , and winds paper money  15  while it is superposed on the tape T when paper money is received. A wheel driving motor  111  is provided to the wheel  105  to drive the wheel  105  for rotation at a speed reduction ratio G w . An encoder  115  (that generates pulses P 2  time per revolution) is fitted to the wheel driving motor  111  and can detect the number of revolution. 
     A sensor  117  is interposed between the rollers  108   a ,  108   b  and the wheel  105 . Various sensors are provided to the temporary depository  40  besides the sensor  117 . Remaining paper money sensors  118  and  119  are provided so as to detect paper money remaining on the wheel  105 . When even one paper money remains as wound on the wheel  105 , either one of these remaining paper money sensors  118  and  119  can detect such remaining paper money. 
     A tape tip sensor  121  is interposed between the idler roller  103  and a tape guide roller  120 , and a tape end sensor  122  is fitted to the outer peripheral portion of the reel  106  to detect the end position of the tape T wound on the reel  106 . 
     The conveying path  10  for receiving or delivering paper money  15  is provided at the front part of the paper money receipt/delivery port of the temporary depository  40 . The relation between the conveying speed of this conveying path  10  and the speed of each portion inside the temporary depository  40  will be later explained in detail in the paragraph of the function and effect. 
     Next, the operation of the tape system paper money receipt/delivery device having the construction described above will be explained. 
     To receive paper money  15  into the temporary depository  40 , the wheel  105  is rotated clockwise (in the arrow direction) as shown in FIG.  1 . In this instance, the rotating speed of the wheel  105  is set in such a fashion that the winding speed V 1  of the tape T is higher by about 3% than the conveying speed V 2 . As paper money  15  is pulled into the temporary depository  40 , jamming of paper money can be prevented. 
     At this time, the reel  106  rotates at the tape winding speed V 1  in the tape discharging direction (counter-clockwise), but the reel driving motor  107  rotates counter-clockwise the reel  106  at a speed V 3  lower by about 5 to 8% than the tape winding speed V 1 . 
     As a result, when the wheel  105  winds the tape T, the reel  106  rotates in such a fashion that the tape winding speed reaches the speed V 1  in the counter-clockwise direction due to the traction of the tape. Because the reel driving motor  107  causes the reel  106  to rotate at the tape speed V 3  lower by 5 to 8% than the tape winding speed V 1 , however, a tension develops in the tape T. When this tension exceeds a predetermined value, the torque above the predetermined value acts on the torque limiter  110  and the reel  106  rotates counter-clockwise at the tape winding speed V 1 . As a result, the tension corresponding to the set torque of the torque limiter  110  is always applied to the tape T. 
     Receipt of paper money  15  is conducted in this manner and the receiving operation is completed. The number of paper money  15  received in this case is detected on the basis of the count result of the receipt/delivery sensor  117 . Whenever a receipt instruction of paper money  15  is given, the operation described above is repeated and paper money  15  is wound on the wheel  105  and is received. As the receipt of paper money  15  proceeds and the tape end sensor  122  detects the end of the tape T, the receipt of paper money is stopped. 
     Next, to deliver paper money  15  from the temporary depository  40 , the wheel  105  is rotated counter-clockwise (in the direction of arrow) as shown in FIG.  2 . 
     At this time, the reel  106  is rotated at the tape winding speed V 1  in the tape winding direction (clockwise), but the reel driving motor  107  causes the reel  106  to rotate clockwise at the speed V 3  higher by about 5% than the tape delivering speed V 1 . 
     As a result, when the tape T is delivered from the wheel  105 , the reel driving motor  107  rotates clockwise the reel  106  at the tape winding speed V 3  but the wheel  105  is so arranged as to rotate at the tape speed V 1  lower by about 5% than the rotation speed V 3  of the reel driving motor  107 . In consequence, the tension develops in the tape T. When this tension exceeds a predetermined value, the torque higher than the predetermined value acts on the torque limiter  110 , so that the reel  106  is rotated clockwise at the tape delivering speed V 1 . After all, the tension corresponding to the set torque of the torque limiter  110  is always imparted to the tape T. 
     As the tape T is rewound from the wheel  105  in this way, paper money  15  between the wheel  105  and the tape T is delivered from the paper money receipt/delivery port to the conveying path  10  through the space between the rollers  108   a  and  108   b . After all paper money is delivered, the tape T is delivered from the wheel  105  until the tape tip sensor  121  detects the initial position of the tape T. When the tape initial position is detected, the wheel driving motor  111  and the reel driving motor  107  stop operating, and after the remaining paper money sensors  118  and  119  confirm that no paper money remains in the temporary depository  40 , the operation is completed. 
     During this paper money delivering operation, the relation between the speed V 1  of the tape T and the conveying speed V 2  of the conveying path  10  is so set as to satisfy the relation V 1 &lt;V 2 . Because the speed V 2  is set to be by about 3% higher than the speed V 1 , paper money  15  can be pulled out. 
     A CPU  200  shown in FIG. 5 executes controls of the paper money receipt/delivery processing and the operations of the reel driving motor  107  and the wheel driving motor  111  associated with the former. Reversible counters  201  and  202  respectively count the pulses acquired from the encoder  114  in accordance with the revolution of the reel  106  and the pulses acquired from the encoder  115  in accordance with the revolution of the wheel driving motor  111 , and acquire the count values corresponding to the position of the tape T. 
     For, the tape T has open ends, or in other words, a winding start position (tip) and a winding finish position (end) as viewed from the wheel  105 , and the tape must be operated while its absolute position is kept grasped. 
     In this embodiment, the count value is set to zero (0) with the sensing position of the tape tip sensor  121  as the reference. The count outputs of the reversible counters  201  and  202  are inputted to the CPU  200 . The CPU  200  executes the data processing and determines the tape traveling position and the moving distance or the moving speed, and uses these data for the paper money receipt/delivery processing and for controlling the reel driving motor  107  and the wheel driving motor  111  associated with this processing. The reel driving motor  107  and the wheel driving motor  111  are driven and controlled by the outputs of the CPU  200  through the reel motor driving circuit  203  and the wheel motor driving circuit  204 , respectively. 
     A series of control contents executed by the CPU  200  in the present invention will be explained with the flowchart. 
     (1) Explanation of Flow of Paper Money Receipt Processing: 
     The reel driving motor  107  and the wheel driving motor  111  are driven through the motor drive circuits  203  and  204 , respectively, in accordance with ON/OFF (normal/reverse) instruction from the CPU  200 . The encoder  114  (that generates P 1  times pulses per revolution) can detect the number of revolution of the reel  106  and the encoder  115  (that generates P 2  times pulses per revolution) can detect the number of revolution of the wheel driving motor  111 . The speed can be controlled by use of the numbers of revolutions so detected. 
     Next, the receipt processing will be explained. 
     FIG. 6 is a flowchart of the paper money receipt preparation operation, and FIGS. 7 to  9  are flowcharts of the paper money receipt operation. 
     (a) Explanation of Flow of Paper Money Receipt Preparation Operation: 
     In the paper money receipt preparation operation shown in FIG. 6, whether or not the tape T exists at the initial position is confirmed (Step S 1001 ). When the tape T exists at the initial position (Step S 1001 : Yes), the wheel driving motor  111  and the reel driving motor  107  are accelerated to a speed V WM  (revolution/sec) and a speed V RM  (revolution/sec), respectively, in the paper money receiving direction (Steps S 1002  and S 1003 ). 
     After the accelerations to the target speeds are finished, the add-up value of the rotational pulses from the start of acceleration of the reel  106  is set to N 1  (Step S 1004 ) and at the same time, the add-up value P 1  of the rotational pulses of the wheel driving motor  111  is set to zero (0) (Step S 1005 ). The add-up value of the rotational pulses of the reel  106  is read and is set to N 2  (Step S 1006 ), and the rotational pulse of the wheel driving motor  111  at this time is added up (Step S 1007 ). 
     Here, if (N 2 −N 1 ) does not reach  50  (Step S 1008 : No), Steps S 1006  and S 1007  are repeated until the difference reaches  50 . When (N 2 −N 1 ) reaches  50  (Step S 1008 : Yes), the add-up value P 1  of the rotational pulses of the wheel driving motor  111  at that time is stored (Step S 1009 ), and the rotation add-up value N 1  of the reel  106  is reset to zero (0) (Step S 1010 ). Both wheel driving motor  111  and reel driving motor  107  are stopped (S 1011  and S 1012 ). The initial values of the rotating speeds of the wheel driving motor  111  and the reel driving motor  107  are set (Step S 1013 ), and the receipt preparation operation is finished. 
     (b) Explanation of Flow of Receipt Operation: 
     When the paper money receipt operation is started, the sensor  16  first detects the existence/absence of paper money  15  on the conveying path as shown by the flowchart of FIGS. 7 to  9  (Step S 1014 ). If paper money  15  does not exist (Step S 1014 : No), the flow enters standby until the existence of paper money is confirmed unless the receipt operation is finished (Step S 1016 ). 
     When the existence of paper money is confirmed (Step S 1014 : Yes), the wheel driving motor  111  and the reel driving motor  107  are accelerated in the paper money receiving direction (Steps S 1017  and S 1018 ), and the flow enters standby until the target speed set in Step S 1013  is reached. When the speed reaches the target value (Step S 1019 : Yes), speed control of the wheel driving motor  111  and the reel driving motor  107  is executed (Steps S 1025  and S 1026 ). Speed control of the wheel driving motor  111  and the reel driving motor  107  is continued until the motors stop, and the detail of this control will be described later. 
     Next, the sensor  16  on the conveying path  16  waits for a predetermined time such as 300 (ms) as the paper money absence time (Step S 1033 ). When the sensor  16  continuously detects the absence of paper money for 300 (ms) (Step S 1034 : Yes), control of the wheel driving motor  111  and the reel driving motor  107  is finished (Steps S 1035  and S 1036 ), and the wheel driving motor  111  and the reel driving motor  107  are decelerated (Steps S 1037  and S 1038 ) and are then stopped (Steps S 1049  and S 1050 ). After the motors are stopped, the flow again returns to Step S 1014 . 
     The processing described above is repeated until the stop instruction of the receipt processing is given (Steps S 1016 : Yes, S 1020 : Yes, S 1028 : Yes, S 1040 : Yes), or until the tape end sensor  122  detects the tape end (Steps S 1023 : Yes, S 1029 : Yes, S 1044 : Yes). 
     (2) Explanation of Flow of Paper Money Delivery Processing: 
     FIGS. 10 and 11 are flowcharts of the paper money delivery operation. 
     When the paper money delivery operation is started as shown in FIGS. 10 and 11, the target speed set on the basis of the speed at the end of the speed control of the previous paper money receipt processing is set (Step S 1101 ). The reel driving motor  107  and the wheel driving motor  111  are accelerated in the paper money delivery direction (Steps S 1102  and S 1103 ). When their speeds reach the target speeds set in Step S 1101  (Step S 1104 : Yes), speed control of the wheel driving motor  111  and the reel driving motor  107  are conducted (Steps S 1105  and S 1106 ) until the stop instruction is given (Steps S 1107   a : Yes, S 1107   a : Yes, S 1107   b : Yes, S 1107   c : Yes, S 1107   d : Yes) or until the tape initial position sensor  121  detects the tape tip (Steps S 1109   a : Yes, S 1109   b : Yes, S 1109   c : Yes). Paper money is then delivered serially (Steps S 1110 , S 1111 ). 
     FIG. 12 is a flowchart useful for explaining the stop processing. 
     As shown in the flowchart, when the stop instruction or the tape initial position is detected, speed control of the wheel driving motor  111  and the reel driving motor  107  is finished (Steps S 1113  and S 1114 ), and these motors are stopped (Steps S 1115  and S 1116 ). Unless the remaining paper money sensors  118  and  119  detect any remaining paper money (Step S 1117 : Yes), the paper money delivery processing is finished. If any remaining paper money is detected, an abnormality processing is executed (Step S 1119 ). 
     (3) Explanation of Calculation Formulas for Calculating Outer Diameter of Reel  106  at Receipt Initial Stage (the Term “Diameter” Used Herein Means the Diameter Inclusive of the Tape Wound): 
     The outer diameter d 1  of the reel  106  at the finish of the delivery operation might exhibit certain variance depending on the winding condition of the tape T. Therefore, the outer diameter d 2  of the reel  106  at the start of the paper money receipt processing is measured. The outer diameter d 2  of the reel  106  is calculated from the count number C 2  of the encoder  115  fitted to the wheel driving motor  111  when the length of the tape T corresponding to the count number C 1  of the encoder  114  is taken up on the wheel  105 . 
     Referring to FIG. 4, it will be assumed that the wheel  105  having a diameter D 1  and the reel  106  having a diameter d 1  respectively rotate N turns and n turns and their diameters respectively change to D 2  and d 2  after the tape T having a thickness H is transferred and wound onto the wheel  105 . Then, 
     
       
           D   2   =D   1 +2· N·H   (1) 
       
     
     
       
           d   1   =d   2 +2· n·H   (2) 
       
     
     The amount of the tape T wound on the wheel  105  and the amount of the tape T leaving the reel  106  are equal to each other. Therefore, 
     
       
         ( D   2 /2) 2 ·π−( D   1 /2) 2 ·π=( d   1 /2) 2 ·π−( d    2 /2) 2 ·π 
       
     
     This formula can be changed as follows: 
     
       
           D   2   2   −D   1   2   =d   1    2   d   2   2   (3) 
       
     
     From the formulas (1), (2) and (3), d 2  is given by the following formula: 
       d   2 ={( N   2   −n   2 )· H+N·D   1   }/n   (4) 
     Here, it will be assumed that the count number of the encoder  115  fitted to the wheel driving motor  111  when the amount of the tape T corresponding to the C 1  count of the encoder  114  fitted to the reel  106  is C 2  the reduction ratio between the wheel  105  and the wheel driving motor  111  is G H , the number of pulses from the encoder  114  per revolution of the reel  106  is P 1  and the number of pulses from the encoder  115  per revolution of the wheel driving motor  111  is P 2 . Then, since 
     
       
           n=C   1   /P   1 (revolution) 
       
     
     and 
     
       
         N=C 2 /( P   2   /G   H ) (revolution), 
       
     
     these n and N are put into the formula (4), 
     
       
           d   2 =[{( C   2 /( P   2   /G   H )) 2 −( C   1   /P   1 ) 2   }·H+C   2 /( P   2   /G   H )· D   1 ]/( C   1   /P   1 ))  (5) 
       
     
     The formula (5) is the calculation formula for calculating the outer diameter d 2  of the reel  106  in the initial stage of the note receipt. 
     (4) Explanation of Control of Tape Traveling Speed 
     The following concrete example is hereby assumed by way of example. 
     It will be further assumed that the note receipt operation is conducted at the speed of the conveying path  10  of V 2 =1,600 (mm/sec), the number of pulses P 1  from the encoder  114  per revolution of the reel  106  of P 1 =6, the number of pulses P 2  of the encoder  115  per revolution of the wheel driving motor  111  of P 2 =200, the diameter D o  of the wheel  105  at the winding initial position of D o =80 (mm), the thickness H of the tape T of H=0.041 (mm), the reduction ratio G w  between the wheel  105  and the wheel driving motor  111  of G w =⅔, the reduction ratio G R  between the reel  106  and the reel driving motor  107  of G R =2, and the count by number C 1  of the encoder  114  for calculating the initial outer diameter of the paper money receipt operation of the reel  106  of C 1 =50. 
     At this time, the speed of the wheel driving motor  106  is controlled so that the set speed V 1  of the tape is higher by 3%, i.e. 1,648 (mm/sec), than the conveying speed V 2 . 
     The rotating speed ω (revolution/sec) of the reel is given by the formula (6) below at the tape speed V 1  (mm/sec), the reel diameter d (mm) and the time t (msec) required for one round of the reel: 
     
       
         ω=1/( t /1000)=1000/ t   (6) 
       
     
     Since V 1 =d·πω=d·π·1000/t, the time t required for one round of the reel is given by the formula (7): 
       t= (1000·π /V   1 ) ·d   (7) 
     Assuming that the initial diameter at the start of the reel revolution (immediately after (3) measurement of the reel initial diameter) is d 2  and the add-up value of the count number of the encoder  114  from the start of the reel revolution is n s , the following formula (8) is acquired from the formula (2): 
     
       
         d=d 2 −2( n   s /6) ·H=d   2   −n   s   ·H /3  (8) 
       
     
     From the formulas (7) and (8), 
     
       
         t=1000·π /V   1 ·( d   2   −n   s   ·H /3)  (9) 
       
     
     From the formula (9), the tape speed V 1  reaches 1,648 (mm/sec) at t given below:              t   =     1000   ·     π   /   1648     ·     (       d   2     -       n   s     ·     0.041   /   3         )                   =       1.9063   ·     d   2       -     0.026053   ·     n   s                               
     Assuming S 1 =1.9063·10,000·d 2 , S 1  is given as follows from the formula (5):                      S   1     =                1.9063   ·   10000   ·     [         {         (       C   2     /     (       P   2     /   G     )       )     2     -       (       C   1     /     P   1       )     2       }     ·   H     +                                        C   2     /     (       P   2     /   G     )       ·     D   1       ]     /     (       C   1     /     P   1       )                 =                1.9063   ·   10000   ·     (       0.547   ·     10     -   7       ·     C   2   2       +                                      0.032   ·     C   2       -   0.3417     )     ≅         C   2   2     /   959     +     610   ·     C   2       -   6514                   (   10   )                         
     The formula (10) is rearranged as follows: 
     
       
         10000· t=S   1 −261· n   s   (11) 
       
     
     In other words, when the wheel driving motor  111  is driven to rotate the reel  106  at a speed such that the required time t (msec) per revolution of the reel satisfies the formula (11), the tape speed V 1  can be set to the set value of 1,648 (mm/sec). 
     The set speed V 1  of the tape reaches 1,552 (mm/sec) lower by 3% than the conveying speed V 2  during the delivery of paper money when t satisfies the following formula (12):                    t   =     1000   ·     π   /     (     1552   ·     (       d   2     -       n   s     ·     0.041   /   3         )                         =       20.0242   ·     d   2       -     0.027664   ·     n   s                       (   12   )                         
     Assuming hereby that S 2 =2.0242·10000·d 2 , the formula (5) gives:                      S   1     =                2.0242   ·   10000   ·     [         {         C   2     /       (       P   2     /   G     )     2       -       (       C   1     /     P   1       )     2       }     ·   H     +                                        C   2     /     (       P   2     /   G     )       ·     D   1       ]     /     (       C   1     /     P   1       )                 =                2.0242   ·   10000   ·     (       0.547   ·     10     -   7       ·     C   2   2       +                                      0.032   ·     C   2       -   0.3417     )     ≅         C   2   2     /   903     +     648   ·     C   2       -   6917                   (   13   )                         
     Accordingly, the formula (13) is rearranged as follows: 
     
       
         10000 ·t=S   2 −277· n   s   (14) 
       
     
     In other words, when the wheel driving motor  111  is driven to rotate the reel  106  at a speed such that the required time t (msec) per revolution of the reel satisfies the formula (11), the tape speed V 1  can be set to the set value of 1,552 (mm/sec). 
     Assuming in this case that no speed difference exists between the rotating speed V RM  of the reel driving motor  107  and the reel rotating speed V R , 
     
       
           V   Rm   =V   R =1/( G   R ·1000· t )=1/2000· t   (15) 
       
     
     However, in order to generate the difference of the rotating speeds between the reel  106  and the reel driving motor  107  and to prevent the occurrence of jamming by imparting the tension to the tape T in accordance with the set torque of the torque limiter  110  as described above, the speed difference must be provided between the rotating speed V RM  of the reel driving motor  107  and the reel rotating speed V R  so as to satisfy the relation V RM &lt;1/2000t (revolution/sec) at the time of the receipt of paper money and the relation V RM &gt;1/2000t (revolution/sec) at the time of the delivery of paper money. 
     When the speed difference is great at this time, reliability or service life of the torque limiter  110  is lowered. Therefore, a rotating speed difference of about 5% is given to secure reliability of the torque limiter  110  and to stabilize the tension of the tape T. In other words, the rotating speed V RM  of the reel driving motor  107  at the time of the receipt of paper money is:                      V   RM     =         (     1   -   0.05     )     /   2000        t                 =     4.75   ×     10     -   6          t                   (revolution/sec)                     (   16   )                         
     At the time of the delivery of paper money, on the other hand,                      V   RM     =         (     1   +   0.05     )     /   2000        t                 =     5.25   ×     10     -   6          t                   (revolution/sec)                     (   17   )                         
     As the rotating speed difference is provided between the reel  106  and the reel driving motor  107 , it becomes possible to prevent the occurrence of jamming when paper money is delivered to the conveying path. 
     As explained above, the paper money handling device according to the present invention actuates the motor from the point of time at which the paper money passage sensor detects the passage of paper money at the time of receipt paper money and can set the winding speed a little higher than the paper money conveying speed of the conveying path. In consequence, the device can prevent the occurrence of jamming at the delivery portion with the conveying path and can smoothly deliver paper money. When paper money is delivered, the paper money handling device sets the delivering speed a little lower than the paper money conveying speed of the conveying path. Therefore, the device can prevent the occurrence of jamming and can smoothly deliver paper money. In addition, slacking of the tape can be prevented by the speed control by means of the torque limiter, and a stable tension can be imparted to the tape. Consequently, paper money can be stably taken up.