JP2020079122A - Paper sheet transport system - Google Patents

Abstract

To provide a paper sheet transport system capable of avoiding interruption of business because a detection unit can determine automatically whether it is a malfunction thereof or a paper sheet jam error.SOLUTION: The paper sheet transport system for transporting a paper sheet in an air duct 10 by an air flow, includes: a recovery device 40 having a drive unit for collecting a paper sheet 2, which is transported in the air duct 10, provided at a terminal end of the air duct 10; a detection unit 43 for detecting presence or absence of the paper sheet 2 transported in the air duct 10 provided in the recovery device 40 or the air duct 10 in front thereof; and a control unit 100 for determining whether it is the jamming of the paper sheet 2 or the malfunction of the detecting unit 43 depending on whether or not an output from the detecting unit 43 further changes, by changing an input to the detection unit 43 for a certain period of time when the output from the detection unit 43 deviates for a certain period of time from a threshold for a standby state.SELECTED DRAWING: Figure 3

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet conveyance system that conveys paper sheets with an air flow and collects them with a collecting device.

  A system for delivering paper sheets by an air stream is provided and is used in a game arcade and the like. This air flow sheet conveying system can be downsized as compared with a conveying device using a belt or a roller, and consumables such as a belt and a roller are not required, so that the running cost can be suppressed and operated.

  In addition, the paper sheet transportation system by air flow has a more flexible transportation layout than the belt and roller system, and it is more flexible to transport paper sheets to different places in the same room, between different rooms, or between different floors. Since it is high, it can be transported over a long distance. For example, the paper sheets sent into the blower pipe from the sending device on the pachinko island of the game hall are carried by the airflow to the safe room, which is a separate room, where they can be collected and collected.

  At the inlet of the recovery device, the paper sheets are taken over from the airflow conveyance to the mechanical conveyance, and finally reach the storage section for stacking and storing the paper sheets. A motor device is generally used as a drive source for mechanical transfer. The motor device is driven when a detection unit provided in the inlet of the collection device or in the blower pipe in front of it detects a paper sheet, and the paper sheet is mechanically conveyed and stored in the storage unit. An optical detection unit having a light emitting unit and a light receiving unit is used as the detection unit, and the light from the light emitting unit is blocked or reflected by the paper sheet, so that an input to the light receiving unit (=detection unit Output) changes to detect paper sheets.

Patent No. 4130697 Patent No. 4182143 Patent No. 4409626 JP2012-218827

  By the way, when the detector fails, the output of the detector does not change due to the passage of paper sheets in normal operation, and the detector becomes undetectable thereafter, and the motor device also does not drive normally. Many paper jam errors occur in the device. As a result, this system may be stopped and become in a business-disabled state.

  Even if the detection unit is not broken down, even if the paper sheets are jammed or stagnated at the position of the detection unit, the change in the output of the detection unit that appears due to the passage of the paper sheets at the normal time does not appear, After that, the unit becomes undetectable, and the motor device is not normally driven. For this reason, there has been a problem that an employee must check the device and judge the error to deal with the situation where the motor device is not normally driven, whether the detector has a malfunction or a clogging error.

  The present invention is capable of automatically determining which of the malfunctions, even if a malfunction of the detection unit occurs at the entrance of the paper sheet collection device or if a paper jam error occurs at that position. To provide a paper sheet transportation system that does not require business suspension.

  A paper sheet transport system according to the present invention is a system for transporting paper sheets in an air blowing tube by an air flow, and collects paper sheets transported in the air blowing tube at an end portion of the air blowing tube. A collection device having a drive unit is provided, and the collection device or the blower pipe in front of the collection device is provided with a detection unit for detecting the presence or absence of paper sheets conveyed in the blower pipe. When the output deviates from the level of the standby state for a certain period of time by changing the input to the detection unit for a certain period of time, the presence or absence of further change in the output from the detection unit causes jamming of paper sheets and the detection unit. It is characterized by having a control unit for determining the failure of.

  Further, the paper sheet transport system according to the present invention is a system for transporting paper sheets by an air flow in a blower pipe, and is provided in a control unit and an end portion of the blower pipe, and is transported in the blower pipe. The collection device includes a drive unit that collects incoming paper sheets, and a detection unit that has a light emitting unit and a light receiving unit for detecting the paper sheets sent to the collection device. When the light emitted from the light emitting unit of the detection unit is shielded or reflected by the paper sheet and the light receiving level at the light receiving unit deviates from the threshold value, the driving unit is driven for a certain period of time and kept constant. When the light receiving level of the light receiving unit returns to the standby state after a lapse of time, the collection of the paper sheet is finished as it is, and after the lapse of the predetermined time, the light receiving level of the light receiving unit still deviates from the threshold value. In the case where the above state is maintained, the output of the light emitting unit is increased, and when the light receiving level in the light receiving unit further changes, it is said that the paper sheet is jammed in the collecting device. It is characterized in that it is determined that the detection unit is defective when there is no further change in the light reception level of the light reception unit.

Instead of the detection unit having the light emitting unit and the light receiving unit, it is possible to use an ultrasonic wave detecting unit having a wave transmitting unit that emits ultrasonic waves and a wave receiving unit that receives ultrasonic waves.
When the control unit determines that the detection unit has failed, the control unit drives the drive unit regardless of the presence or absence of the paper sheet.
When the control unit determines that the detection unit has failed, the control unit can intermittently drive the drive unit regardless of the presence or absence of the paper sheet.
It is possible to provide a reporting device for reporting that a paper sheet jam error has occurred, and a display unit for displaying a failure of the detection unit or a paper sheet jam in the recovery device. .

  According to the present invention, even if a failure of the detection unit occurs at the entrance of the paper sheet collecting apparatus or if a paper sheet jam error occurs at that position, it is automatically determined which one of the troubles. It is possible to provide a paper sheet conveying system that does not have to stop the business by dividing into pieces.

It is a schematic diagram which shows the structure of a paper sheet conveyance system. It is a schematic diagram which shows a recovery device. It is a flow chart which shows a judgment part procedure of a detection part failure and a bill jam in a collection device. It is a flow chart which shows drive control of a recovery device drive part (motor device) at the time of failure of a detection part.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In all the drawings for explaining the embodiments, members having the same function are designated by the same reference numeral, and repeated description thereof may be omitted.

First, the overall configuration of the paper sheet transport system 1 according to the present embodiment will be described with reference to FIG. Regarding the sheet conveying system 1, the techniques described in Patent Documents 1 to 4 can also be referred to.
In the following, bills will be described as an example of paper sheets.

  As shown in FIG. 1, in the paper sheet transport system 1, for example, an air flow generated by an air flow generation device 30 such as a blower is used as a delivery pipe 31, a connection pipe 32, a blower pipe 10, a recovery device 40, and a return pipe 33. It is configured to circulate through. In order to configure this circulation path, the blower tube 10 is formed with a bent tube 10a bent in a U shape. In addition, a plurality of feeding devices 20 for feeding the banknotes 2 into the blower tube 10 are installed at appropriate places of the blower tube 10. The airflow generation device 30, the delivery pipe 31, the connection pipe 32, the return pipe 33, and the recovery device 40 are installed in, for example, the housing 49, and the blower pipe 10 and the blowing device 20 are installed outside the housing 49. ..

  The feeding device 20 includes a bill identifying device 21 installed on the front side of the feeding and a bending device 22 installed on the back side and connected to the blower tube 10. The bending device 22 that constitutes the feeding device 20 forms a zigzag-shaped deformed portion 2b (which is a bent portion) at the rear end portion in the transport direction with respect to the flat surface portion 2a at the front end portion in the transport direction of the banknote 2. Is. Wind pressure from an air flow (indicated by an arrow in FIG. 1) flowing in the blower pipe 10 acts on the deformed portion 2b, and the banknote 2 is conveyed in the blower pipe 10.

  Further, the recovery device 40 is configured to include a separation unit 50, a correction unit 70, and a storage unit 90 that are installed in the order of conveyance from the terminal end side of the blower pipe 10. Of these, the separating unit 50 separates the banknote 2 that has been conveyed in the blower tube 10 from the air flow that has given a propulsive force to the banknote 2, and sends the banknote 2 to the correction unit 70. In addition, the correction unit 70 corrects the deformed portion 2b of the banknote 2 sent from the separating unit 50. The storage unit 90 stores the banknote 2 separated from the airflow by the separation unit 50 in a stretched state (flattened state) by correcting the deformation of the deformation unit 2b via the correction unit 70. Is.

  As described above, the paper sheet transporting system 1 sends the bills 2 into the blower tube 10 by forming the blower tube 10 in which the paper sheets are transported by the air flow and the deformed portion 2b at the rear end portion of the bill 2 to be sent. The blowing device 20, the air flow generator 30 that applies a wind pressure to the deforming portion 2b of the bill 2 to generate an air flow in the blow pipe 10 for the bill 2, and is installed at the end portion of the blow pipe 10. It is provided with a collecting device 40 for collecting the bills 2 conveyed inside. Further, the paper sheet transport system 1 includes a control unit 100 that controls the entire apparatus such as the airflow generation device 30, the feeding device 20, and the collection device 40. In such a paper sheet transport system 1, a transport path is configured in the order of the blower tube 10, the separation unit 50, the correction unit 70, and the storage unit 90 from the feeding device 20 into which the bill 2 is inserted, and the bill 2 is transported by this. Transported on the road.

FIG. 1 has explained the paper sheet transport system 1 in one row of pachinko islands (island-shaped places where a plurality of pachinko machines are arranged back to back) in the game hall.
However, this is not a system for collecting the banknotes 2 in the same room by the collection device (safe) 40, but the collection device 40 is arranged in another room (not shown), and the blower pipe 10 crawls along the wall surface or the ceiling ceiling. It may be a system that is installed together and leads to the recovery device 40 provided in a separate room for recovery.

FIG. 2 shows a specific example of the recovery device 40. As the recovery device 40, a known recovery device as shown in Patent Document 1 can be used.
A brief description will be given below.
As shown in FIG. 2, the recovery device 40 includes a separating unit 50 that separates the banknote 2 conveyed in the blower tube 10 from the air flow, and a deforming unit of the banknote 2 separated from the air flow by the separating unit 50. It has a straightening section 70 for straightening 2b, and a storage section 90 for storing the banknotes 2 separated from the air flow by the separating section 50 and straightened by the straightening section 70.

In the separating unit 50, the airflow and the banknote 2 are separated, and the airflow is discharged to the outside through an exhaust pipe (not shown). The banknote 2 is guided and conveyed by the conveyor belt 51 disposed in the separating unit 50, and is sent to the correction unit 70 via the pair of upper and lower rollers 54 disposed on the leading end side of the conveyor belt 51.
A guide plate 56 and a guide roller 58 are appropriately arranged between the roller 54 and the correction section 70 to guide the bill 2 to the correction section 70.
Reference numeral 60 denotes a first drive motor (driving unit) that rotationally drives the conveyor belt 51 via pulleys 61, 62 and a belt 63. Further, the first drive motor 60 rotates the pair of rollers 54 in the feeding direction of the banknote 2 via the gear.

A detection unit 43 for detecting passage of the banknote 2 is provided at the entrance of the separation unit 50.
The detection unit 43 is composed of an optical sensor having a light emitting unit and a light receiving unit.
The detection unit 43 is provided with a sensor including a light emitting unit and a light receiving unit on both side walls of the blower pipe 10 so as to sandwich the blower pipe 10. The blower pipe 10 has a plurality of ribs projecting inward in parallel on both inner walls so that banknotes do not stick to the wall surface, but the light emitting unit and the light receiving unit are located between the adjacent ribs. Light is emitted and light is received by being arranged so as to pass through the outer wall of the blower tube 10.

When the light emitted from the light emitting unit is blocked by the banknote 2, the light receiving level of the light receiving unit decreases (reacts), and when the light receiving level is lower than the threshold value, the banknote 2 enters the separating unit 50. Detected. This detection signal (output of the detection unit 43) is input to the control unit 100, and the control unit 100 drives the first drive motor 60 (and the second drive motor 76 described below) to transfer the banknote 2 to the correction unit 70. The drive is controlled so that it is sent.
When the light emitted from the light emitting unit is received by the light receiving unit without being blocked by the banknote 2 (that is, the banknote 2 is not in the separating unit 50 in the standby state), the light receiving level is high (no reaction), The first drive motor 60 (and the second drive motor 76) is not driven and remains stopped.

The detection unit 43 may be configured such that the light emitted from the light emitting unit is reflected by the bill 2 and the reflected light is received by the light receiving unit.
In this case, the bill 2 is detected when the light receiving level of the light receiving unit becomes higher than that in the standby state. Then, in this case, the first drive motor 60 (and the second drive motor 76) is driven.
In the case of the reflection type, instead of the detection unit having the light emitting unit and the light receiving unit, it is possible to use an ultrasonic detection unit having a transmission unit that transmits an ultrasonic wave and a reception unit that receives the ultrasonic wave.

The detection unit 43 may be provided not at the entrance of the separation unit 50 but at a portion of the blower pipe 10 located on the front side (for example, 3 to 4 m before) of the separation unit 50.
The recovery device 40 is a mechanical recovery device 40 having a conveyor belt 51 and a roller group.
Since the banknotes 2 are transported by the airflow in the blower pipe 10, the transport speed is high (for example, 3 m/sec), but the transport speed in the collection device 40 is about 1/10 of the transport speed in the blower pipe 10. And lower. As a result, the crushing phenomenon of the banknotes 2 easily occurs in the collection device 40, which is one of the causes of the jamming of the banknotes 2. In order to solve this problem, when the detection unit 43 detects the banknote 2, the control unit 100 controls the airflow generation device 30 to reduce the air flow rate and reduce the entry speed of the banknote 2 into the separation unit 50. It is better to let them do it.

Next, the straightening unit 70 has straightening rollers 72 and a guide plate arranged in a zigzag shape, and the bill 2 is guided by the guide plate and passes through the straightening roller 72 to correct the bending (deformation). Then, the flat bills 2 are sequentially stacked and stored in the storage portion 90 via the feeding wheel 74 which is a rubber gear.
Reference numeral 76 denotes a second drive motor, which drives the correction roller 72 and the feed wheel 74 at the same time by winding the belt 78 around the pulley. The plurality of straightening rollers 72 are driven via gears.

A detection unit 80 is provided between the straightening roller 72 and the feed wheel 74. The detection unit 80 is also formed as an optical sensor including a light emitting unit and a light receiving unit, and detects the presence or absence of the banknote 2.
The storage portion 90 has a receiving plate 94 that is received by the spring 92. A press plate 96 is arranged above the receiving plate 94 so as to be vertically movable. The press plate 96 is vertically driven via a vertical movement mechanism driven by a motor 98.
A storage space (storage portion 90) is formed between the receiving plate 94 and the press plate 96. The bills 2 are fed into the storage space by the feed-in wheel 74, are appropriately pressed by the receiving plate 94 and the press plate 96, and are held in a state of being sequentially stacked in the storage space.

In the present embodiment, the control unit 100 processes and controls the collection of the banknote 2 in the collection device 40 as follows.
First, the bill 2 enters the separating unit 50, and the light emitted from the light emitting unit of the detecting unit 43 is blocked by the bill 2 so that the light receiving level at the light receiving unit (=output from the detecting unit 43) exceeds the threshold value. When it becomes smaller, the drive unit (the first drive motor 60, the second drive motor 76) is driven for a certain period of time to feed the bill 2 into the storage unit 90, and after a certain period of time, the light receiving level of the light receiving unit. When becomes larger than the threshold value, the driving of the driving unit is stopped and the collection of the banknotes 2 is finished as it is (normal state in which neither the detection unit 43 has a failure nor the banknotes 2 are jammed).

  By the way, after the drive unit (the first drive motor 60, the second drive motor 76) is driven and the predetermined time has elapsed, the light receiving level of the light receiving unit in the detecting unit 43 is still smaller than the threshold value. If so, the output of the light emitting unit of the detection unit 43 (=input to the detection unit 43) is increased. In this case, the control unit 100 determines that the banknote 2 is jammed in the collection device (separation unit 50) when the light reception level of the light reception unit of the detection unit 43 changes in the direction of increasing. On the other hand, even if the output of the light emitting unit is increased, if there is no further change in the light receiving level of the light receiving unit, it is determined that the detection unit 43 is out of order.

That is, when the banknote 2 is clogged (including staying) in the separating unit 50, the light emitted from the light emitting unit is blocked by the banknote 2, but a part of the light is transmitted (light receiving level at the light receiving unit. Lowers). Therefore, when the light emission output from the light emitting unit is increased, the amount of transmitted light also increases, and the light receiving level of the light receiving unit increases to some extent (the output of the detection unit increases). Therefore, when the light receiving level of the light receiving unit is changed to increase, it is determined that the banknote 2 is jammed.
On the other hand, when the detection unit 43 is out of order, the light emitting unit does not emit light or the light receiving unit cannot receive light, and even if the output of the light emitting unit is increased, the light receiving level of the light receiving unit is increased. There is no further change in (input amount to the light receiving part). Therefore, in this case, it is determined that the detection unit 43 is out of order.
In the above, when the light receiving level of the light receiving unit in the detecting unit 43 is still smaller than the threshold value after the elapse of the certain time, the output of the light emitting unit of the detecting unit 43 is increased, but the output of the light emitting unit is decreased. Then, it may be possible to determine whether the detection unit 43 is out of order or the bill 2 is jammed, depending on whether or not the light receiving level of the light receiving unit further changes.

  When the banknote 2 is jammed in the separating unit 50, the malfunction can be resolved and the business can be continued by removing the banknote 2 jammed by the employee. Therefore, in this case, an alarm device (not shown) notifies the employee that the banknote 2 is jammed. An error lamp, an alarm device, a wireless device, a display device, and the like are conceivable as the alarm device (not shown).

On the other hand, in the case of failure of the detection unit 43, the employee cannot immediately deal with it. However, if it is left as it is, it will eventually be forced to suspend business.
Therefore, when the control unit 100 determines that the detection unit 43 has failed, the drive unit (the first drive motor 60, the second drive motor 60, the second drive motor 60, The drive motor 76) is forcibly driven to collect the bill 2. In this case, the drive unit may be continuously operated or intermittently operated at appropriate intervals. It should be noted that even if the detection unit 43 fails, the employee is notified by some means. After the business ends, the detection unit 43 may be repaired.

When the detection unit 43 is an optical sensor that receives the reflected light from the bill 2 by the light receiving unit, the following control is performed.
That is, when the light emission level of the light receiving unit changes (increases) from the standby state due to the light emitted from the light emitting unit of the detection unit 43 being reflected by the banknote 2, the control unit 100 keeps the drive unit for a certain period of time. When the light receiving level in the light receiving unit becomes the same as in the standby state after a certain period of time has elapsed after the driving, the normal state is determined, and the collection of the banknotes 2 is ended. When the light receiving level of the light receiving unit is still increasing from the standby state after the elapse of the certain time, the output of the light emitting unit is increased to further increase the light receiving level of the light receiving unit. It is determined that the banknote 2 is jammed in the collection device 40 when it changes in the following direction, and it is determined that the detection unit 43 has failed when there is no further change in the light reception level of the light reception unit. Of.
The detector 80 does not necessarily have to be provided.

FIG. 3 is a flowchart when the control unit 100 specifically determines whether the banknote 2 is jammed or the detection unit 43 is out of order. The detection units 43 and 80 are sensors of the type that detects transmitted light at the light receiving unit.
First, in step S10, the input level at the collection device insertion port detection unit (detection unit 43) (light reception level at the light reception unit: output level of the detection unit 43) is determined. When the level is equal to or higher than the threshold value (specifically, the standby state), it is determined that the banknote 2 has not entered, and the processing ends.
In step S10, when the light receiving level of the light receiving part of the detection part 43 is less than or equal to the threshold value, it is determined that the banknote 2 has entered, and in step S12, the collection device drive part (drive part) (first drive motor). 60, the second drive motor 76) is driven, and the banknote 2 is conveyed in the collection device 40 (step S12).

In step S14, when the inside of the collection device detection unit (not shown) has reacted (that is, the collection of the banknote 2 is detected), it is determined that the banknote 2 is collected in the storage unit 90, and the collection device drive unit (motor device). Is stopped (step S16), and the process ends.
In step S14, when there is no reaction, that is, when the passage of the banknote 2 is not confirmed, the collection device drive unit (drive unit) is driven in step S18, and after a prescribed (constant) time has elapsed, the collection device drive unit (drive unit). ) Is stopped (step S20).

Then, in step S22, if the light receiving level of the light receiving unit of the collection device insertion port detection unit (detection unit 43) still remains equal to or less than the threshold value, in step 24, the collection device insertion port detection unit (detection) The output of the light emitting section of the section 43) is increased (step S24).
Then, in this case, if the light receiving level of the light receiving unit of the collection device insertion port detection unit (detection unit 43) rises (changes to a larger direction) in step S26, in step S28 the collection device insertion port (separation unit 50). ), it is determined that the banknote 2 is jammed (stuck), and in step S30, a processing for issuing a notification that the banknote jam is generated is performed. The employee takes care of removing the jammed banknote 2 in accordance with this notification processing.

In step S26, if there is no change in the light receiving level in the light receiving part of the collection device insertion port detection part (detection part 43), it is determined in step S32 that the detection part 43 has a failure, and in step S34, The automatic (forced) drive processing of the recovery device drive unit (drive unit) shown in 4 is performed.
In step S22, if the light receiving level of the light receiving unit of the collection device insertion port detection unit (detection unit 43) is equal to or higher than the threshold value, it is determined that the bill 2 is stored in the storage unit 90, and the collection of the bill 2 is completed. .

FIG. 4 is a flowchart for performing automatic (forced) drive processing of the recovery device drive unit (drive unit).
When it is determined that the detection unit 43 is out of order, the recovery device drive unit (drive unit) is forcibly driven in step S40.
Then, if there is a reaction in the collection device internal detection unit (not shown) in step S42, that is, if the collection of the banknote 2 is detected, the collection device drive unit (drive unit) is defined in steps S44 and S46 ( After driving for a certain period of time, it stops and the collection of the banknote 2 is completed.
Even when there is no reaction in step S42, that is, when the passage of the banknote 2 is not detected, the collection device driving unit (driving unit) is driven after stopping for a prescribed (constant) time, and the process ends.
The recovery device drive unit (drive unit) is driven intermittently at regular time intervals.

1 Paper sheet transport system 2 Banknotes (paper sheets)
2a Plane part 2b Deformation part 10 Blower tube 10a Bending tube 20 Feeding device 21 Banknote identifying device 22 Bending device 30 Airflow generating device 31 Sending pipe 32 Connecting pipe 33 Returning pipe 40 Collecting device 43 Detecting part 49 Housing 50 Separating part 51 Conveying Belt 54 Roller 56 Guide plate 58 Guide roller 60 First drive motor (drive unit)
61 Pulley 62 Pulley 63 Belt 70 Straightening section 72 Straightening roller 74 Feeding wheel 76 Second drive motor (driving section)
78 Belt 80 Detecting Section 90 Storage Section 92 Spring 94 Receiving Plate 96 Press Plate 98 Motor 100 Control Section

Claims (6)

A system for transporting paper sheets by air flow in a blower pipe,
At the terminal end of the blower pipe, a collection device having a drive unit for collecting paper sheets conveyed in the blower pipe,
The collection device or the blower pipe in front of it is provided with a detection unit that detects the presence or absence of paper sheets conveyed in the blower pipe,
When the output from the detection unit deviates from the level in the standby state for a certain period of time by changing the input to the detection unit for a certain period of time, the output of the detection unit is further changed to determine whether the paper sheet A paper sheet transport system having a control unit that determines a jam and a failure of the detection unit. A system for transporting paper sheets by air flow in a blower pipe,
A control unit,
A collecting device provided at a terminal end of the blower pipe, the collecting device including a drive unit that collects paper sheets conveyed in the blower pipe,
A detection unit having a light emitting unit and a light receiving unit for detecting the paper sheets sent to the collecting device;
The control unit causes the drive unit to operate when the light reception level at the light receiving unit deviates from a threshold value due to the light emitted from the light emitting unit of the detection unit being shielded or reflected by paper sheets. When the light receiving level of the light receiving unit returns to the standby state after a certain time of driving, and the light receiving level of the light receiving unit returns to the standby state, the collection of the paper sheet is finished as it is, and after the predetermined time passes, the light receiving level of the light receiving unit. Is still deviating from the threshold value, the output of the light emitting unit is increased, and when the light receiving level of the light receiving unit further changes, the paper A paper sheet conveying system, wherein it is determined that a jam has occurred, and when there is no further change in the light receiving level of the light receiving unit, it is determined that the detection unit has failed.   3. The paper sheet transport according to claim 1, wherein when the control unit determines that the detection unit has a failure, the control unit drives the drive unit regardless of the presence or absence of the paper sheet. system.   The paper sheet according to claim 1 or 2, wherein when the control unit determines that the detection unit is in failure, the control unit intermittently drives the drive unit regardless of the presence or absence of the paper sheet. Transport system.   The paper sheet conveying system according to any one of claims 1 to 4, further comprising a reporting device for reporting that a paper sheet jam error has occurred.   6. The paper sheet transport system according to claim 1, further comprising a display unit that displays a failure of the detection unit or a paper sheet jam in the recovery device.

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