JP2006016122A - Sheet takeout device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet takeout device equipped with a high reliability and assuring a high sheet treating ability. <P>SOLUTION: The sheet takeout device 1 is equipped with a takeout roller 5 to transport at variable speed the sheet taken out onto the transport path 10, a separator roller 6, a transport roller 7 to transport the sheet at a constant speed, a first 13 and a second sensor 14, a document length measuring part 15, a gap correction control part 16, and a motor control part 17. The mean document length of sheets passing the sensor 14 is measured by the document length measuring part 15, and the obtained value is compared with the threshold by the gap correction control part 16. When the mean document length is shorter than the threshold, the gap correction control part 16 controls the motor control part 17 and thereby retards the rotating speed of the takeout roller 5 so as to spread the gap between the sheets. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a paper sheet takeout device that takes out a plurality of paper sheets one by one on a conveyance path.

  Conventionally, as a method of continuously taking out a plurality of stacked sheets one by one on the conveyance path, a constant pitch method for taking out the sheets at a fixed timing, and a gap between the sheets are made constant A constant gap method for taking out is known (for example, see Patent Document 1).

  In the constant pitch method, the amount of paper sheets to be taken out, that is, the throughput can be made constant, but on the other hand, the picking pitch needs to be adjusted to the longest paper sheets, and the throughput cannot be maximized.

  On the other hand, with the constant gap method, the throughput can be increased as compared with the constant pitch method. However, since the throughput changes depending on the length of the paper sheet, if a short paper sheet is continuously taken out, the downstream processing unit There arises a problem that the processing is not in time.

For example, in a banknote processing apparatus or the like, there is a case where a discrimination process for discriminating a denomination is not in time or an operation of switching gates is not in time, which causes a problem such as a jam.
JP2003-109061A (abstract)

  An object of the present invention is to provide a paper sheet take-out apparatus with high reliability and high processing capacity.

  In order to achieve the above object, the paper sheet takeout device of the present invention is a device for taking out a plurality of paper sheets one by one with a certain gap onto the transport path, and has been continuously taken out onto the transport path. The processing capacity of the length detection unit that detects the average length along the conveyance direction of a certain number of paper sheets and the processing unit that processes the paper sheets conveyed through the conveyance path satisfies the certain gap. The storage unit that stores the threshold value of the average length that cannot be caught if maintained, and the average length detected by the length detection unit are compared with the threshold value stored in the storage unit. And a gap correction unit that corrects the gap so as to widen the gap between the sheets when the average length is shorter than the threshold value.

  According to the above invention, when a plurality of paper sheets are continuously taken out with a certain gap on the transport path, the short paper sheets are continuous so that the processing capacity in the processing unit on the downstream side of the transport path cannot catch up. When the sheet is taken out, the conveyance gap is corrected so as to widen the gap between the sheets. For this reason, basically, a fixed gap method with high throughput is employed, and problems such as a conveyance jam can be prevented and reliability can be improved.

  The paper sheet take-out device of the present invention is a device for taking out a plurality of paper sheets one by one with a certain gap onto the transport path, along the transport direction of the paper sheets taken out on the transport path. A length detection unit that detects the length of the paper and a processing unit that processes the paper sheet conveyed through the conveyance path, and the threshold of the length that does not catch up when the processing capability is maintained at the constant gap. When the detected length is shorter than the threshold value by comparing the storage unit storing the value and the length of the paper sheet detected by the length detection unit with the threshold value stored in the storage unit, And a gap correction unit that corrects the gap between the subsequent sheets so as to widen.

  According to the above invention, the gap between the following paper sheets can be corrected based on the length of the paper sheet taken out immediately before. It can be widened, and a more reliable device can be provided.

  Since the paper sheet take-out device of the present invention has the above-described configuration and action, it can improve the reliability and the processing capacity.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a schematic structure of a paper sheet take-out device 1 (hereinafter simply referred to as a take-out device 1) according to the first embodiment of the present invention.

  The take-out device 1 is configured to receive a plurality of paper sheets P such as postal items in a stacked state, and press the plurality of paper sheets P in the stacking direction in contact with the paper sheets at one end in the stacking direction. The paper sheet P is transported by rotating in contact with and rotating the paper sheet P located at the other end in the stacking direction. It has a feed roller 4 that feeds out the path 10. On the downstream side (not shown) of the transport path 10, for example, a processing unit (not shown) such as an OCR that reads a mail destination and a sorting gate that switches the transport destination is provided.

  A plurality of rollers 5, 6, 7, and 8 are provided on the transport path 10 on the downstream side of the feed roller 4 along the transport direction of the paper sheet P. All the rollers 4 to 8 shown in FIG. 1 including the feed roller 4 described above have a rotation shaft (not shown) extending in the paper surface direction, and each have a plurality of, for example, two roller portions along the axial direction. In FIG. 1, only one roller portion is shown.

  On the downstream side of the conveying roller 10 in the drawing in the downstream side of the feeding roller 4, the paper sheet P is rotated in the direction of the arrow in the drawing by rolling on one surface of the sheet P fed onto the conveying path 10. A take-out roller 5 for taking out the product onto the conveyance path 10 is provided. A separation roller 6 is provided at a position facing the take-out roller 5 across the conveyance path 10, that is, below the conveyance path 10 in the figure.

  The separation roller 6 is pressed against the take-out roller 5 through the conveyance path 10, and applies a reverse torque in the direction opposite to the conveyance direction of the paper sheet P (in the direction of the arrow in the figure) from the other side of the paper sheet P, and feeds it. When a plurality of paper sheets are taken out in a state of being overlapped by the roller 4 (this state is referred to as double feeding), the second and subsequent paper sheets function. That is, the separation roller 6 needs to be arranged on the same side as the backup plate 3 with respect to the conveyance path 10.

  The separation roller 6 has a contact portion 11 between the separation roller 6 and the take-out roller 5 (hereinafter, this portion is referred to as a nip 11), or when one sheet is in the nip 11, It rotates in the direction of the take-out roller 5 and does not hinder the conveyance of the paper sheet P.

  A transport roller 7 that rotates in the transport direction of the paper sheet (in the direction of the arrow in the figure) is provided on the downstream side in the transport direction of the take-out roller 5 and above the transport path 10. An auxiliary roller 8 is provided at a position facing the conveying roller 7 via the conveying path 10, which is brought into rolling contact with the conveying roller 7. The auxiliary roller 8 is disposed in pressure contact with the conveying roller 7 with a predetermined pressure. Hereinafter, the contact portion between the conveying roller 7 and the auxiliary roller 8 is referred to as a nip 12.

  The transport roller 7 always rotates at a constant rotational speed, and transports the paper sheet P along the transport path 10 at a constant transport speed. The take-out roller 5 rotates at a variable speed based on a command from a motor control unit 17 described later. The motor controller 17 normally rotates the take-out roller 5 at the same peripheral speed as the peripheral speed of the transport roller 7 that rotates at a constant speed. When the peripheral speed of the feed roller 4 is V0, the peripheral speed of the take-out roller 5 is V1, and the peripheral speed of the transport roller 7 is V2, the rotational speed of each roller is set so that the relationship of V0 ≦ V1 ≦ V2 is established. Is set. Further, the tangential force of the transport roller 7 is set sufficiently higher than the tangential force of the take-out roller 5.

  A first detection sensor 13 is disposed between the roller pair 5, 6 and the roller pair 7, 8. This detection sensor 13 has a light emitting portion and a light receiving portion in a positional relationship across the conveyance path 10, and the optical axis thereof is positioned and disposed at a position that crosses the conveyance path 10 between the nips 11 and 12. That is, when the paper sheet P is transported through the transport path 10 and the paper sheet P blocks the optical axis of the detection sensor 13, the sensor is turned on and the passage of the paper sheet P is detected. A second detection sensor 14 that functions in the same manner as the first detection sensor 13 described above is disposed downstream of the roller pairs 7 and 8.

  The second detection sensor 14 is connected to a letter length measurement unit 15 that functions as a length detection unit of the present invention. The letter length measurement unit 15 measures the length along the conveyance direction of the paper sheet P passing through the position (fixed position) where the optical axis of the detection sensor 14 crosses the conveyance path 10. Specifically, the conveyance speed (passing speed) of the paper sheet when the optical axis of the detection sensor 14 is blocking the optical axis of the detection sensor 14 is the time when the paper sheet P is blocking the optical axis of the detection sensor 14 ( The length along the conveyance direction of the paper sheet P can be measured by integrating with (passing time). In the present embodiment, the paper sheet passing through the detection sensor 14 is conveyed at a constant speed depending on the rotation speed of the conveyance roller 7 that rotates at a constant speed. Is the length of the paper sheet.

  The letter length measuring unit 15 calculates the average length of a certain number of sheets P (10 sheets in the present embodiment) that are continuously conveyed through the conveyance path 10. Specifically, the letter length measuring unit 15 constantly updates and stores the length of the paper sheet P detected through the detection sensor 14 for 10 sheets, and stores the average length of the 10 paper sheets stored therein. Is calculated each time. The calculation result is output to the gap correction control unit 16.

  The first detection sensor 13 is connected to a gap correction control unit 16 that functions as a gap correction unit of the present invention. The gap correction control unit 16 detects the passage of the leading edge of the preceding paper sheet in the transport direction through the detection sensor 13 and the time until the leading edge of the subsequent paper sheet is detected in the transport direction, and the paper sheet P. The gap between the trailing edge of the preceding paper sheet and the leading edge of the succeeding paper sheet is detected based on the transport speed of.

  Further, the gap correction control unit 16 controls the motor control unit 17 based on the data output from the letter length measurement unit 15. The motor control unit 17 controls the rotation speed of the take-out roller 5 to a variable speed, and corrects the gap between the paper sheets P conveyed through the conveyance path 10. Basically, in the present embodiment, the gap correction control unit 16 is configured to increase the gap between the paper sheets P when the processing speed of the paper sheets P in the processing unit (not shown) cannot keep up. The control unit 17 is controlled.

Here, the operation when a plurality of paper sheets P are taken out on the transport path 10 with a certain gap (constant gap taking out) by the take-out device 1 having the above configuration will be described with reference to FIG.
First, the gap correction control unit 16 monitors the paper sheet P passing through the detection sensor 13, and after the trailing end of the preceding paper sheet P1 in the transport direction passes through the detection sensor 13 (FIG. 2a), the subsequent paper sheet is detected. The time until the leading edge of the leaf P2 in the transport direction passes through the detection sensor 13 (FIGS. 2b to 2c) is detected. At this time, the succeeding paper sheet P2 is restrained by the nip 11 of the roller pairs 5 and 6, as shown in FIG. Then, the gap correction control unit 16 measures the gap between the two sheets based on the detected time and the transport speed of the preceding sheet P1.

  Thereafter, the gap correction control unit 16 transmits a command to the motor control unit 17 so that the measured gap becomes the target gap stored in the memory in advance. The command in this case is the rotation speed and rotation time of the motor calculated by the gap correction control unit 16. The motor control unit 17 determines the rotation speed y [m / sec] to be changed by the take-out roller 5 and the change time t [sec] based on the command received from the gap correction control unit 16 and controls the take-out roller 5. Then, the subsequent paper sheet P2 is conveyed at a variable speed (FIG. 2d).

  For example, the peripheral speed of the transport roller 7 is X [m / sec], the target gap of the take-out device 1 is A [m], and the gap between the sheets measured by the gap correction control unit 16 is g [m]. In this case, the rotation speed y [m / sec] changed by the take-out roller 5 and the change time t [sec] are values satisfying the following formula.

Xt-yt = A-g
As described above, the gap is measured between the two sheets by measuring the gap via the detection sensor 13 to control the rotation of the take-out roller 5 and changing the conveyance speed of the subsequent sheet P2. It can be adjusted to the desired value. However, when the rotational speed of the take-out roller 5 is changed, before the leading end in the transport direction of the subsequent paper sheet P2 restrained by the nip 11 reaches the nip 12 between the rollers 7 and 8, the take-out roller 5 It is necessary to return the rotation speed to the normal rotation speed.

  By the way, in the above-described constant gap take-out method, the throughput changes according to the length of the paper sheet P taken out on the transport path 10 along the transport direction. Therefore, when short paper sheets are continuously transported. In some cases, the downstream processing unit cannot keep up with the processing. For example, when short paper sheets continuously pass through the sorting gate, the gate switching operation may not be in time.

  For this reason, in the present embodiment, when paper sheets that are short enough to prevent the processing in the processing unit from being in time, the gap between the paper sheets is widened. Hereinafter, the gap correction control operation of the present embodiment will be described with reference to FIG. 3 and FIG. FIG. 3 shows a flowchart for explaining the operation of the letter length measuring unit 15. FIG. 4 shows a flowchart for explaining the operation of the gap correction control unit 16.

  During the above-described constant gap taking-out operation, the letter length measurement unit 15 measures the length of the paper sheet conveyed through the conveyance path 10 via the detection sensor 14 as shown in Step 1 in FIG. Since the paper sheets passing through the detection sensor 14 are conveyed at a constant speed by the conveyance roller 7, the length can be obtained from the time passing through the detection sensor 14.

  The letter length measuring unit 15 has a memory for updating and recording the length of 10 sheets of paper, and every time the length of the paper is measured via the detection sensor 14, the length is stored in the memory. In addition to the update recording, the average value of the lengths (letter lengths) of the ten sheets recorded is calculated (step 2). Then, the letter length measurement unit 15 stores the calculated average letter length in the memory and transmits it to the gap correction control unit 16 in response to a request from the gap correction control unit 16 (step 3).

  In the gap correction control unit 16, as shown as step 1 in FIG. 4, the letter length measuring unit 15 is measured at the timing when the gap between the preceding paper sheet and the subsequent paper sheet is measured via the detection sensor 13. The average letter length for 10 sheets is received (step 2) and compared with the threshold value stored in advance in the memory (storage unit) (step 3). The threshold value referred to here indicates the length of the paper sheet that is short enough that the processing capability in the processing unit on the downstream side cannot catch up when the normal gap set by the take-out device 1 is maintained.

  That is, in the gap correction control unit 16, when the average letter length received from the letter length measuring unit 15 in step 2 is shorter than the threshold value (step 3; YES), the target gap stored in the memory is set wider than the normal value. The set target gap is set (step 4), and the widened target gap is transmitted to the motor control unit 17 (step 5). Then, the motor control unit 17 performs control so as to reduce the rotation speed of the take-out roller 5 in accordance with the target gap transmitted from the gap correction control unit 16.

  On the other hand, when the gap correction control unit 16 determines in step 3 that the average letter length is equal to or greater than the threshold value, the target gap is maintained as usual (step 6), and the normal target gap is maintained. The motor control unit 17 is controlled (step 5). The processes in steps 2 to 6 are executed every time the paper sheet P is taken out onto the transport path 10.

  As described above, according to the present embodiment, the fixed gap take-out method is adopted to increase the throughput, and only when the short sheets are continuously conveyed and the processing capacity in the processing unit cannot keep up. Since the gap between the leaves is increased, the paper sheets can be taken out without exceeding the processing capacity while maintaining a high throughput, and the reliability can be improved.

  In the first embodiment described above, when the average letter length of the paper sheet P taken out on the conveyance path 10 becomes shorter than the threshold value, the gap is widened at least by the difference between the average letter length and the threshold value. Thus, the rotation speed of the take-out roller 5 may be controlled. In particular, by increasing the gap by just the difference between the average letter length and the threshold value, it is possible to achieve the limit throughput of the processing capability in the processing unit, and to further increase the processing capability.

  FIG. 5 shows a schematic structure of a paper sheet takeout device 20 (hereinafter simply referred to as the takeout device 20) according to the second embodiment of the present invention. Since this take-out device 20 has the same structure as the take-out device 1 of the first embodiment described above except that it does not have the second detection sensor 14, the same reference numerals are given to components that function in the same manner. Detailed description thereof will be omitted. Moreover, in FIG. 5, illustration of the accommodating part 2 and the backup plate 3 is abbreviate | omitted.

  In the take-out device 20, the detection sensor 13 is connected to the letter length measurement unit 15 and the gap correction control unit 16. That is, the letter length measurement unit 15 detects the passage of the paper sheet P via the detection sensor 13 and measures the length along the conveyance direction of the paper sheet P. In the present embodiment, the paper sheet P passing through the detection sensor 13 is transferred from the nip 11 between the roller pair 5 and 6 to the nip 12 between the rollers 7 and 8, and is thus restrained by the nip 11. As shown in FIG. 6, the conveyance speed may change. For this reason, in the present embodiment, the length of the paper sheet P is measured by integrating the transport speed of the paper sheet P passing through the detection sensor 13 with the passage time.

  Hereinafter, the processing operation performed by the take-out device 20 will be described with reference to FIGS. 5 to 9. FIG. 6 shows a graph for explaining a method for measuring the letter length when the peripheral speed (tangential speed) of the take-out roller 5 changes. FIG. 7 shows the state of the paper sheet being conveyed. FIG. 8 shows a flowchart for explaining the operation of the letter length measuring unit 15. FIG. 9 shows a flowchart for explaining the operation of the gap correction control unit 16.

  As shown in FIG. 7, the letter length measuring unit 15 detects the leading end of the preceding paper sheet P1 in the transport direction after the detection sensor 13 detects the trailing edge of the paper sheet P1 in the transport direction. Until then, the rotational speed of the take-out roller 5 is monitored via the motor control unit 17, and the tangential speed of the take-out roller 5 is detected while the paper sheet P1 passes through the detection sensor 13, as shown in FIG. Integration is performed with the passage time of the sensor 13, and the length of the paper sheet P1 along the transport direction is measured (FIG. 8; step 1). In this case, the length of the paper sheet P1 is the area indicated by the hatched portion in FIG. The measured letter length of the paper sheet P1 is transmitted to the gap correction control unit 16 in response to a request from the gap correction control unit 16 (step 2).

  On the other hand, in the gap correction control unit 16, as shown in FIG. 7, the leading end in the transport direction of the preceding paper sheet P1 passes through the detection sensor 13, and the leading end in the transport direction of the subsequent paper sheet P2 is detected by the detection sensor 13. Is measured, and the gap between the paper sheets P1 and P2 is measured based on this time and the conveyance speed of the paper sheet P1 (FIG. 9; step 1). At this time, the transport speed of the preceding paper sheet P1 is constant because it depends on the tangential speed of the transport roller 7 rotating at a constant speed.

  Further, the gap correction control unit 16 measures the gap between the preceding paper sheet P1 and the succeeding paper sheet P2 via the detection sensor 13, and the preceding paper sheet from the letter length measuring unit 15 is measured. The letter length P1 is received (step 2) and compared with a threshold value stored in advance in the memory (step 3). The threshold value here refers to the length of the paper sheet that is short enough that the processing capability in the downstream processing unit cannot catch up when the normal gap set by the take-out device 20 is maintained.

  That is, the gap correction control unit 16 sets the target gap stored in the memory wider than the normal value when the letter length received from the letter length measuring unit 15 in step 2 is shorter than the threshold value (step 3; YES). (Step 4), and the widened target gap is transmitted to the motor control unit 17 (Step 5). Then, the motor control unit 17 performs control so as to reduce the rotation speed of the take-out roller 5 in accordance with the target gap transmitted from the gap correction control unit 16.

  On the other hand, when the gap correction control unit 16 determines in step 3 that the letter length is equal to or greater than the threshold value, the target gap is maintained as usual (step 6), and the normal target gap is maintained. The motor control unit 17 is controlled (step 5). The processes in steps 2 to 6 are executed every time the paper sheet P is taken out onto the transport path 10.

  As described above, according to the present embodiment, the same effect as that of the first embodiment described above can be obtained, and the letter length of the preceding paper sheet P1 is compared with the threshold value, and the subsequent paper sheet Since the gap between the paper sheets P1 and P2 can be corrected by variably controlling the conveyance speed of the class P2, the reliability can be further improved.

  Also in the second embodiment described above, when the letter length of the preceding paper sheet P1 taken out on the conveyance path 10 becomes shorter than the threshold value, the subsequent paper sheet is at least the difference between the letter length and the threshold value. It is only necessary to control the rotational speed of the take-out roller 5 so as to widen the gap with the class P2, and by widening the gap by just the difference between the letter length and the threshold value, the limit of the processing capacity in the processing unit is limited. Throughput can be achieved and processing capacity can be further increased.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, you may delete some components from all the components shown by embodiment mentioned above. Furthermore, you may combine the component covering different embodiment suitably.

  For example, in the first embodiment described above, the case where the average letter length of ten sheets P is measured has been described. However, the present invention is not limited to this, and the number of letter lengths monitored can be arbitrarily changed. is there. Further, in the first embodiment described above, the gap is changed for all the taken-out paper sheets based on the preceding average letter length of 10 sheets. The target gap of the next group may be set based on the average letter length of the previous group.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows the paper sheet taking-out apparatus which concerns on 1st Embodiment of this invention. Operation | movement explanatory drawing for demonstrating the constant gap taking-out operation | movement by the taking-out apparatus of FIG. The flowchart for demonstrating operation | movement by the letter length measurement part of the taking-out apparatus of FIG. The flowchart for demonstrating operation | movement by the gap correction control part of the taking-out apparatus of FIG. Schematic which shows the paper sheet taking-out apparatus which concerns on 2nd Embodiment of this invention. The graph for demonstrating the method to measure letter length in the taking-out apparatus of FIG. Operation | movement explanatory drawing for demonstrating the processing operation by the taking-out apparatus of FIG. The flowchart for demonstrating operation | movement by the letter length measurement part of the taking-out apparatus of FIG. The flowchart for demonstrating operation | movement by the gap correction control part of the taking-out apparatus of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,20 ... Paper sheet taking-out apparatus, 2 ... Accommodating part, 3 ... Backup plate, 4 ... Feeding roller, 5 ... Taking-out roller, 6 ... Separation roller, 7 ... Conveyance roller, 8 ... Auxiliary roller, 10 ... Conveyance path, DESCRIPTION OF SYMBOLS 11, 12 ... Nip, 13 ... 1st detection sensor, 14 ... 2nd detection sensor, 15 ... Letter length measurement part, 16 ... Gap correction control part, 17 ... Motor control part, P ... Paper sheet.

Claims (10)

A paper sheet takeout device that takes out a plurality of paper sheets one by one with a certain gap onto a conveyance path,
A length detection unit that detects an average length along the conveyance direction of a certain number of paper sheets continuously taken out on the conveyance path;
A storage unit that stores a threshold value of the average length that does not catch up when the processing capability in the processing unit that processes the paper sheet transported through the transport path maintains the constant gap;
Compare the average length detected by the length detection unit with the threshold value stored in the storage unit, and widen the gap between paper sheets when the detected average length is shorter than the threshold value. A gap correction unit for correcting the gap;
A paper sheet takeout device characterized by comprising: The length detector detects the length of the paper sheet by integrating the passage speed of the paper sheet passing through the fixed position of the conveyance path with the passage time, and the paper sheet passes through the fixed position. Each time, the average length of the predetermined number of paper sheets continuously downstream in the conveying direction including the paper sheets that have passed is detected,
The gap correction unit compares the detected average length with the threshold value every time a paper sheet is taken out, and corrects the gap of the taken out paper sheet based on the comparison result. The paper sheet takeout device according to claim 1.   When the average length detected by the length detection unit is compared with the threshold value stored in the storage unit as a result of comparing the average length detected by the length detection unit with the threshold value, the gap correction unit is at least the threshold value of the average length. 3. The paper sheet takeout device according to claim 1, wherein a gap between the paper sheets is made wider than the predetermined gap by a difference from the value.   The paper sheet takeout device according to claim 3, wherein the gap correction unit widens a gap between paper sheets by the difference.   The gap correction unit compares the average length detected by the length detection unit with the threshold value stored in the storage unit. The paper sheet takeout apparatus according to any one of claims 1 to 4, wherein a gap between the paper sheets is adjusted so as to be maintained. A paper sheet takeout device that takes out a plurality of paper sheets one by one with a certain gap onto a conveyance path,
A length detection unit that detects a length along the conveyance direction of the paper sheet taken out on the conveyance path;
A storage unit that stores a threshold value of the length that does not catch up when the processing capability in the processing unit that processes the paper sheet conveyed through the conveyance path maintains the constant gap;
Compare the length of the paper sheet detected by the length detection unit with the threshold value stored in the storage unit, and if the detected length is shorter than the threshold value, A gap correction unit that corrects the gap to widen,
A paper sheet takeout device characterized by comprising: The length detection unit detects the length of the paper sheet by integrating the passage speed of the paper sheet with the passage time each time the paper sheet passes through a fixed position of the conveyance path.
The gap correction unit compares the detected length of the paper sheet with the threshold value, and corrects the gap between the paper sheet and the subsequent paper sheet based on the comparison result. The paper sheet take-out device according to claim 6.   When the detected length is shorter than the threshold value as a result of comparing the length detected by the length detection unit with the threshold value stored in the storage unit, the gap correction unit is at least the detected length and the threshold value. 8. The paper sheet takeout device according to claim 6, wherein a gap between the paper sheets is made wider than the predetermined gap by a difference between the values.   The paper sheet take-out apparatus according to claim 8, wherein the gap correction unit widens a gap between paper sheets by the difference.   The gap correction unit compares the length detected by the length detection unit with the threshold value stored in the storage unit, and if the detected length is equal to or greater than the threshold value, the gap correction unit The paper sheet takeout device according to any one of claims 6 to 9, wherein a gap between paper sheets is adjusted so as to be maintained.

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