JPH06293467A - Near full detecting structure for bill receiving and paying machine - Google Patents

Abstract

PURPOSE:To perform accurate decision of a near full state in a bill containing cassette without any error by a method wherein an accumulation thickness equivalent to the given number of most recently accumulated bills is reflected in decision of a near full position. CONSTITUTION:When accumulation of bills at a stage is started, on and after this point of time, the number of accumulated bills is stored at a number of accumulated bank notes memory part 28 and the count value of an encoder is stored at an encoder value memory part 29 in the every given number of bank notes. The number of accumulated bills per one count of the encoder equivalent to the given number of bank notes and a value calculated by a number of accumulated bills calculating means 30 are stored at an update calculated value memory part 31. From the stored update value and the preset near full decision number of bills, a new near full decision count value corresponding to a value when the given number of bills is accumulated is provided. When the near full decision count value is equal to or higher than a preset existing near full decision count value, it is decided that bill containing cassettes 13-15 are brought into a near full state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a banknote depositing / dispensing machine for handling banknotes, which is built into an automatic teller machine installed in a financial institution such as a bank. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a near-full calculation structure of a banknote depositing / dispensing machine that calculates a near-full state in which a banknote storage cassette that stores banknotes of different denominations is almost full.

[0002]

2. Description of the Related Art FIG. 4 is an external perspective view of an automatic teller machine,
FIG. 5 is a schematic configuration diagram of a conventional banknote depositing / dispensing machine. In the figure, reference numeral 1 is a housing of an automatic teller machine, and an operation section for a customer or the like to operate is provided on an upper portion of a front surface side thereof.

Reference numeral 2 denotes a card insertion / ejection port provided in this operation section, 3 denotes a passbook insertion / ejection port located next to the card insertion / ejection port 2, and 4 denotes an upper portion of each of the insertion / ejection ports 2 and 3. The handling display unit displays transaction items that the device can handle, such as deposit / withdrawal transactions and transfer transactions. Reference numeral 5 is a guidance section for displaying operation procedures, transaction amounts, etc. on the display to prompt the customer to operate, and 6 is an operation button provided next to the guidance section 5, which accompanies the transaction processing according to the display of the guidance section 5. It is for inputting instructions.

Reference numeral 7 denotes a bill insertion receiving port which is disposed at the back of the operation button 6 for inserting or receiving a bill in accordance with a transaction process, and 8 is located next to the bill insertion receiving port 7 for transaction processing. This is a coin insertion / reception port for inserting or receiving coins. Then, the automatic cash transaction apparatus having such an external configuration has a built-in banknote depositing / dispensing machine as shown in FIG. 5, and a schematic configuration of this banknote depositing / dispensing machine will be described with reference to FIG. To do.

In FIG. 5, numeral 9 indicates a customer who separates the bills inserted by the customer one by one and feeds the bills into the apparatus, and collects the bills fed from a denomination-type cassette described later to pay the bills to the customer. 4 is provided corresponding to the bill insertion receiving port 7 in the external view of the apparatus shown in FIG.
Reference numeral 10 denotes a banknote transport path extending from the customer service opening 9, which includes a plurality of branching sections and a merging section, and connects a plurality of denomination-based cassettes, banknote discrimination sections, and the like.

Reference numeral 11 designates a temporary banknote stacking section which is provided in the middle of the banknote transport path 10 and temporarily stacks a plurality of banknotes transported as dispensed banknotes, and 12 a denomination of the banknotes transported. A bill discriminating section for discriminating authenticity, damage, skew, etc.
Reference numerals 13, 14, and 15 are denomination cassettes that store a plurality of banknotes for each denomination, and here, 13 and 14 are 10,000-yen ticket cassettes, and 15 is a 1,000-yen ticket cassette.

Reference numeral 16 denotes a reject cassette for storing rejected banknotes that have been discriminated as counterfeit bills or unfit bills in the bill discriminating unit 12 and determined not to be dispensed. With the configuration described above, for example, when performing a deposit transaction, first, a customer deposits a deposit banknote into the customer service slot 9. Therefore, the deposit banknotes dispensed at the customer service slot 9 are separated by a banknote separating and feeding mechanism (not shown). The bills are separated one by one and sequentially fed out to the banknote transport 10. The banknote transport path 10 that has received the banknotes from the customer service port 9 sequentially transports the banknotes and first sends the banknotes to the banknote discriminating section 12. The bill discriminating unit 12 discriminates the fed bills in various ways, and when the bills are discriminated as genuine bills of 10,000 yen, the bill conveyance 10 is transferred to the denomination cassette 13 or 14 and the genuine bills. When it is discriminated as a 1000-yen ticket, it is transported to the denomination-based cassette 15 and stored in each cassette. If the bill is a counterfeit bill or an unfit bill and is judged to be non-payable, the bill is conveyed to and stored in the reject cassette 16.

Next, when performing a withdrawal transaction, the customer first instructs the withdrawal transaction and the withdrawal amount. Therefore, when withdrawing this amount with a ten thousand yen ticket, the money type cassette 13 or 14 is used. In the case of 1,000-yen bills, ten-thousand-yen and 1,000-yen bills are fed from the denomination-based cassette 15 to the bill transport path 10 one by one and fed to the bill validator 12. Then, the bills discriminated as bills that can be dispensed by the bill discriminating unit 12 are accumulated in the bill temporary accumulating unit 11. In this way, when the number of banknotes corresponding to the designated withdrawal amount is aligned in the banknote temporary stacking unit 11, the banknotes are collectively transported from the temporary banknote stacking unit 11 to the customer service port 9 at a low speed, and the customer service port 9 is used. Pay to. On the other hand, the banknotes discriminated by the banknote discriminating section 12 as non-payment due to skewing or the like are the banknote transport path 1
0 is transported and stored in the reject box 16. In this way, the deposit / withdrawal transaction in the bill depositing / dispensing machine has been performed.

In the above transaction processing, if any one of the denomination-based cassettes 13 to 15 is in a full state, that is, a full state, no more bills can be stored. Withdrawal transactions are possible, but withdrawal transactions are no longer possible and the handling has to be discontinued. For this reason, the bill depositing / dispensing machine detects a certain point in time before the denomination cassette becomes full, that is, a near-full state, and notifies the clerk of this by a display means such as a display lamp. Due to the notification, the clerk temporarily stops the device, takes out the banknote storage cassette in the near full state from the device, takes out the banknotes stored therein, or newly loads an empty denomination cassette. By such means, banknotes can be collected to make a deposit transaction.

In order to detect this near full state,
The judgment value is set and registered in advance so as to set the near-full state at a time when the number of sheets is smaller than the full state. Next, the structure of the denomination-type cassette for determining the near-full state will be described with reference to FIG. In the figure, 17 is a bill storage cassette in which bills such as 1,000-yen bills, 10,000-yen bills, and reject bills are accumulated for each denomination, and the denomination cassettes 13, 14, and 15 shown above are shown. is there.

Reference numeral 18 denotes a stage which is provided in the bill storage cassette 17 so as to be vertically movable by a driving means which will be described later. By accumulating a large number of bills on the stage 18, the bills are stored in the cassette. It is like this. Reference numeral 19 denotes a bottom sensor provided at the center of the bottom surface of the banknote storage cassette 17, which detects that the stage 18 has reached the bottom surface.

Reference numeral 20 denotes a deposit position sensor provided at the upper end of the banknote storage cassette 17, which is composed of a pair of light emitting / receiving sensors arranged to face each other so as to horizontally traverse the upper opening of the banknote storage cassette 17. , If the light emission from one light emitting sensor is received by the other light receiving sensor, it is turned off without the detection medium, and if it is blocked by the medium and cannot be received, it is turned on with the detection medium.
The presence or absence of is detected. When the deposit position sensor 20 normally changes from ON to OFF, the timing is read in order to read the value of the encoder 27 described later.

Reference numeral 21 is an endless belt connected to one end of the stage 18 through a connecting member, and 22 and 2
3 is a pair of pulleys around which the belt 21 is stretched, and the pulleys 22 and 23 are the bill storage cassette 1
7 are arranged at positions substantially corresponding to the upper end and the bottom. Reference numeral 24 is a motor gear that meshes with a gear (not shown) that is provided coaxially with the pulley 23 located on the bottom side, and 25 is a stage motor that rotationally drives this motor gear 24. A stage drive mechanism for vertically moving the stage 18 is configured.

Reference numeral 26 is a slit disk provided coaxially with the pulley 23, and has a plurality of slits 26a radially at a predetermined interval along the peripheral edge thereof, and is integral with the rotation of the pulley 23. Rotate to. Reference numeral 27 is an encoder for detecting the position of the stage 18 by reading and counting the slits 26a of the slit disk 26.

Next, the conventional procedure for determining the near-full state in the above configuration will be described with reference to FIGS. 7 is a side sectional view of the banknote storage cassette when the bottom sensor is in the ON state, FIG. 8 is a side sectional view of the banknote storage cassette when the bottom sensor is in the full state, and FIG. 9 is an empty state. FIG. 10 is a side sectional view of the banknote storage cassette when the banknote storage cassette is present, and FIG.

In FIG. 7, the banknotes are not accumulated on the stage 18 and the inside of the banknote storage cassette 17 is empty, but the stage 18 descends to the bottom and is provided on the bottom surface thereof. The ON state is detected by the bottom sensor 19 present. In such a case, that is, when the deposit position sensor 20 is OFF and only the bottom sensor 19 detects the stage 18 and is in the ON state, the encoder value is “0”, and the raising operation of the stage 18 starts from this point. Along with this, counting of encoder values is started.

Further, FIG. 8 shows the bill storage cassette 17 in a full state, in which the deposit position sensor 20 is turned on with a bill, and the bottom sensor 1 is also provided at the bottom of the cassette.
9 detects ON with the stage 18, and when both sensors detect ON as described above, it is determined that the banknote storage cassette 17 is in a full state. And
Even in this full state, the encoder value is "0".

Next, FIG. 9 shows a state in which the maximum count value by the encoder 27 is shown. This maximum count value is raised by the stage motor 25 from the state shown in FIG. Along with this, the encoder 27 also starts counting, and when the stage 18 moves to the upper end and the deposit position sensor 20 detects this, the stage motor 25 is reversely rotated to lower the stage 18, and the deposit position sensor 20 is turned off. The count value of the encoder 27 at this time is set as the maximum encoder value X. This position indicates the state where the banknote stacking is started, and when the maximum encoder value X is counted, the banknote storage cassette 1
It can be recognized that the inside of 7 is empty.

In this state, when the deposit transaction is performed, the deposited banknotes are transported through the banknote transport path 10 shown in FIG. 5, and the banknotes are accumulated on the stage 18 in the predetermined banknote storage cassette 17, The deposit position sensor 20 detects this banknote and turns ON. While the deposit position sensor 20 detects ON, the stage motor 25 is driven to lower the stage 18, and the encoder 27 moves the stage 18. The slit 2 of the slit disk 26
It is detected by counting 6a. And
When the deposit position sensor 20 is turned off, the driving of the stage motor 25 is stopped and the descent of the stage 18 is stopped. Then, the above operation is repeated for each deposit transaction to sequentially store the bills in the cassette.

This state is shown in FIG. 10, and the position of the stage 18 is successively lowered as the bills are accumulated, and the position of the stage 18 at this time is counted by the encoder 27. The encoder value at that time is “x”. As described above, when the bill storage cassette 17 is empty, the encoder value indicates the maximum value "X". Therefore, the average of the bills preset as being accumulated in the full state shown in FIG. If the number of stacked sheets is divided by the maximum count value “X” by this encoder 27,
It is possible to calculate the number of accumulated sheets per count of the encoder 27.

Therefore, assuming that the average number of stored bills in the bill storage cassette 17 = 500 and the maximum count value X of the encoder 27 = 500, it is considered that the number of stored bills per count corresponds to one. 1
In the state shown by 0, x sheets, which is the number of encoders counted by x, can be stored by the full state.

Therefore, the near-full count determination value for determining the near-full state is set as 100 counts in advance, and the near-full determination value "x" is x≤1.
When it reached 00, he judged that he was in a near-full condition and notified the staff.

[0023]

However, in the above-mentioned conventional technique, the number and thickness of banknotes are the difference between new bills in which the bills have not been distributed and used tickets which have already been distributed. The difference depends on the difference, whether it is folded or not, and the difference in the bill and surrounding environment such as temperature and humidity. Setting the number of banknotes accumulated per count to be a constant may cause an error in the near-full detection position.

That is, when the bills accumulated on the stage 18 are new bills having no crease, the number of bills is more than that of the used tickets which are already in circulation and have creases. The integrated thickness becomes thin. That is, even if the same number of banknotes are stacked, the stacking thicknesses of the new ticket and the used ticket are different, and the new ticket is thin and the used ticket is thick. Therefore, the stage 18 descends according to the stacking thickness of the banknotes until the uppermost end thereof is no longer detected by the deposit position sensor 20, so that the descending amount of the stage 18 is completely different even if the stacking number is the same.

Therefore, from the count value of the encoder 27, the number of stored sheets (storing capacity) from the near full state to the full state is calculated by the above constant, and the near full count value corresponding to the stored number is preset to a predetermined value. Even if the near-full determination count value is compared and the near-full determination is made, the number of sheets and the stage descent amount are not constant, so an error occurs in the determination of the near-full position. That is, it can be determined that the near-full determination number of sheets can be accumulated from the near full state to the full state, but if the accumulated number of sheets per encoder count is larger than the preset value, it will soon be full. If the value is small, on the other hand, it will not be detected as a full state even if the near-full judgment number of sheets is accumulated,
It was not possible to detect an accurate near full position.

The present invention has been made in order to solve the above-mentioned problems, and when the bills stored in the bill storage cassette are accumulated on the stage, the accumulated thickness is smaller than the number of new bills. Whether it is a ticket or a large number (thick) used ticket, and even if the status of these banknotes and the surrounding environment such as temperature and humidity are different, the near full state is detected at the appropriate position. An object of the present invention is to provide an excellent near-full detection structure of a banknote depositing / dispensing machine having no near-full detection error.

[0027]

In order to achieve the above-mentioned object, according to the present invention, when performing a near-full determination of a descending stage, per one encoder count of the latest predetermined number of banknotes accumulated on the stage. Is calculated, and the near-full state with no error is detected by reflecting the calculated value.

That is, an encoder for supporting the stage for stacking bills in the bill storage cassette so as to be vertically movable, and encoding and counting the amount of movement of the stage to detect the position of the stage in the bill storage cassette. And, the maximum count value by this encoder is the position of the uppermost part of the stage, the movement value of the stage that descends due to the accumulation of bills from this point is counted by the encoder, and this count value and the encoder In a near-full detection structure of a banknote depositing / dispensing machine, which comprises a control unit that determines a near-full state of the banknote storage cassette based on the number of stacked banknotes per count, a stacking unit that stores the number of banknotes stacked on the stage. Corresponds to the number of sheets storage unit and the number of sheets stored in the above-mentioned number of sheets storage unit Based on both the data of the encoder value storage unit for storing the count value of the encoder, and the accumulated number storage unit and the encoder value storage unit, the encoder 1 A stacking sheet number calculating means for calculating the banknote stacking sheet number per count, and a latest calculated value storage for always storing the latest calculated value out of the calculated values calculated by the stacking sheet number calculating means for this count. And a section are provided in the control section.

With this control unit, when the banknote stacking on the stage is started, the number of stacked sheets for each predetermined number of sheets is stored in the stacked sheet number storage unit, and the count value of the encoder corresponding to the stacked sheet number storage unit is set as an encoder value. The stored number is stored in the storage unit, the number of stacked banknotes per one predetermined number of stacked banknotes is calculated from the both data by the stacking number calculation unit per count, and stored in the latest calculated value storage unit. The new near-full judgment count value obtained by the encoder is obtained from the latest calculated value and the preset near-full judgment number of accumulated banknotes, and this new near-full judgment count value is equal to or greater than the preset old near-full judgment count value. When it becomes, the near full state of the bill storage cassette is detected.

[0030]

According to the above configuration, when the stacking of banknotes on the stage is started, the stacking number is stored in the stacking number storage unit and the count value of the encoder is stored in the encoder value storage unit at every predetermined number of sheets from this point. From both of these data, the number of accumulated sheets per count of the encoder corresponding to the predetermined number of sheets is calculated by the accumulated number of sheets per count calculating means, and this is stored in the latest calculated value storage unit, and the latest stored value is stored. And a preset near-full determination number of banknotes, a new near-full determination count value corresponding to the predetermined number of banknotes is obtained. Then, the newly obtained near-full determination count value reflecting the latest stacking state of the banknotes is compared with the preset near-full determination count value, and the new near-full determination count value is equal to the old near-full determination count value or When the number is large, it is determined that the bill storage cassette is in the near full state.

Therefore, the determination of the near-full position reflects the stacking thickness of a predetermined number of newly stacked banknotes, so that an accurate near-full state with no error can be determined.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a bill depositing / dispensing machine showing a near-full detection structure of the present embodiment, and FIGS. 2 and 3 are explanatory diagrams showing a near-full detection procedure of the present embodiment. The mechanism of the banknote storage cassette 17 and the detection operation by the deposit position sensor 20, the bottom sensor 19 and the encoder 27 in this embodiment are almost the same as the conventional ones. In this embodiment, the count value of the encoder 27 is appropriate. Since only the control system for obtaining the data for detecting the near-full state is different, in the following description and drawings, the substantially same parts as those in the prior art will be designated by the same reference numerals and the description thereof will be omitted.

In FIG. 1, 28 is a banknote storage cassette 1.
The number-of-banks storage unit stores the number of banknotes stacked in the banknote 7 at a certain time, and stores the number of banknotes counted by the number-of-banknotes detecting unit (not shown). An encoder value storage unit 29 stores the count value of the encoder 27 corresponding to the number of sheets stored in the accumulated number storage unit 28.

Reference numeral 30 is a stacking number calculation unit for counting the number of stacked stacks per count of the encoder 27, which is based on the data in the stacking count storage unit 28 and the encoder value storage unit 29 on the stage 18. The number of accumulated banknotes per count of the encoder for the predetermined number of the latest accumulated banknotes among the accumulated banknotes is calculated, and a predetermined number of banknotes, for example 50 A count value of the encoder value storage unit 29 when a number of banknotes are stored,
The amount of change is calculated by comparing with the value before the previous accumulation, and this amount of change is divided by the predetermined number of accumulated sheets, that is, 50 sheets to obtain 1 of the encoder 27 from a certain accumulated number of sheets to the next predetermined accumulated number of sheets. Calculate the number of sheets per count. Then, this calculation process is repeatedly calculated every time a predetermined number of sheets are accumulated.

Reference numeral 31 denotes a latest calculated value storage unit that always stores the latest calculated value among the values calculated by the accumulated number of sheets calculating means 30 per count. Further, 32 controls the processing operation of the bill depositing / dispensing machine, and is obtained from the accumulated number storage unit 28, the encoder value storage unit 29, the accumulated number calculation unit 30 per count, and the latest calculated value storage unit 31. The data is used to control the detection of the near-full state at the optimal position of the bill storage cassette 17.

Next, the procedure for calculating the near full in the above-mentioned configuration will be described with reference to FIGS. The number of accumulated sheets N ₁ at a certain time when the banknotes are accumulated is stored in the accumulated number storage unit 2
8, the encoder 2 at the time when the number of accumulated sheets N ₁
The count value x _{1 of} 7 is stored in the encoder value storage unit 29. Then, from this point onward, a predetermined number n ₂ is newly set,
For example, when 50 banknotes are stored, the number-of-collected-sheets storage unit 28 and the encoder-value storage unit 29 have new data of N ₂ and a count value of X ₂ , respectively, as new data.
Will be remembered. Thereafter, the new accumulated number “n ₂ ” is obtained from the data of the accumulated number storage unit 28 by the accumulated number calculation unit 30 per count, n ₂ = N ₁ −N ₂
In addition, the change amount “x ₃ ” of the count value is calculated from the data of the encoder value storage unit 29 by x ₃ = x ₁ −x ₂ , and the accumulated number “M ₁ ” of the encoder 27 per count is calculated. Is calculated by M ₁ = n ₂ / x ₃ .

Here, the calculated data is immediately stored in the latest calculated value storage unit 31. Then, using the data stored in the latest calculated value storage unit 31, it is determined whether or not it is near full. In other words, the control unit 32 uses the latest calculated value “M ₁ ” of the accumulated number of sheets per count, which is the stored value of the latest calculated value storage unit 31, and the near-full determination number “C” that is set and stored in advance, to be near full. The new near-full judgment count value for judging that the condition is C /
Calculated by M ₁ .

Then, the new near-full determination count value "C / M ₁ " and the preset near-full determination count value "x" are repeatedly compared until x≤C / M ₁ . In this way, the new near full judgment count value "C /
When “M ₁ ” is equal to or larger than the old near-full determination count value “x”, the bill storage cassette 17 determines that the bill storage cassette 17 is in the near-full state, and instructs the bill depositing / dispensing machine. , Notify the staff by turning on the display lamps.

That is, the stacking state of bills is constantly monitored,
The latest data of the number of stacked sheets per one count of the encoder 27 for each predetermined number of sheets is calculated from this monitoring data, and by using this calculated value, when determining whether or not the bill storage cassette 17 has reached the near full state, The latest accumulation status can be reflected. Note that in the above-described embodiment, 1
When calculating the number of stacked sheets per count, set the predetermined number to 5
When the number of banknotes newly stored in the cassette reaches 50 from a certain time point, the number of stacked banknotes per count of the encoder 27 for 50 sheets is calculated, but the number is not limited to this. Not, for example, one in one transaction
When a large number of transactions such as 0 or 20 are performed, the number of banknotes to be handled for each transaction is set to a predetermined number, and the number of accumulated banknotes per encoder count for this number is calculated, and the calculated value is calculated. It may be used to detect near full.

[0040]

As described above, according to the present invention, the determination of the near-full position is performed by calculating the near-full determination number based on the number of accumulated encoders per count, which reflects the accumulated thickness of the most recently accumulated predetermined number of sheets. Because it will be possible, the near full state in the banknote storage cassette,
It can be accurately determined without error.

For this reason, even if the state of the accumulated banknotes, such as unused new bills, used tickets that have been used many times, and creases, the bills and surroundings Even if the environment of temperature and humidity is different, the actual stacking thickness of each of these banknotes is detected, and the near-full judgment count value calculated using this detected value is used for near-full judgment. The type or state of temperature, or the state of temperature or humidity does not hinder the accurate determination of the near-full state, and a reliable determination result of the near-full state that reflects the latest integrated state can be obtained.

Therefore, when arranging the automatic teller machine, it is not necessary to consider the surrounding environment such as temperature and humidity, and there is no need to consider the difference in thickness when handling foreign tickets. Then, it is possible to prevent the occurrence of a trouble in which the bill storage cassette becomes full due to an error in the near-full determination and the deposit transaction must be stopped.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a bill depositing / dispensing machine showing a near-full detection structure of the present embodiment.

FIG. 2 is an explanatory diagram showing a near-full detection procedure of the present embodiment.

FIG. 3 is an explanatory diagram showing a near-full detection procedure of the present embodiment.

FIG. 4 is an external perspective view of the automatic teller machine.

FIG. 5 is a schematic configuration diagram of a conventional banknote depositing / dispensing machine.

FIG. 6 is a side sectional view of a banknote storage cassette showing a near-full determination structure.

FIG. 7 is a side sectional view of the banknote storage cassette when the bottom sensor is in the ON state.

FIG. 8 is a side sectional view of the banknote storage cassette in the full state.

FIG. 9 is a side sectional view of the banknote storage cassette in an empty state.

FIG. 10 is a side sectional view of the banknote storage cassette in the near full state.

[Explanation of symbols]

 17 ... Banknote storage cassette 18 ... Stage 19 ... Bottom sensor 20 ... Deposit position sensor 27 ... Encoder 28 ... Accumulated number storage unit 29 ... Encoder value storage unit 30 ... Accumulated number calculation unit 31 ... Latest calculated value storage unit 32 … Control unit

Claims (1)

[Claims] 1. A banknote storage cassette, which has a box-shaped opening with an upper surface, supports a banknote stacking stage so as to be vertically movable, and encodes and counts the amount of movement of the stage so that the banknote storage cassette can be used in the banknote storage cassette. Equipped with an encoder for detecting the position of the stage, and the maximum count value by this encoder is the position of the uppermost part of the stage, the movement value of the stage that descends due to the accumulation of banknotes from this point is counted by the encoder, In the near-full detection structure of the banknote depositing / dispensing machine, which comprises a control unit that determines the near-full state of the banknote storage cassette from the count value and the number of stacked sheets per count in the encoder, the banknotes stacked on the stage A stacking number storage unit for storing the stacking number storage unit of the From an encoder value storage unit that stores the count value of the encoder corresponding to the number of stacked sheets, and from the time of a certain number of stacked sheets to the next time when a predetermined number of sheets are stacked, based on both the data of the number-of-stacked-sheets storage unit and the encoder value storage unit In the encoder, the accumulated number of bills calculating means for calculating the number of accumulated bills per count and the calculated value calculated by the calculating means for accumulated number of bills per count are always stored. The latest calculated value storage unit is provided in the control unit, and the control unit controls the stacking number storage unit to store the stacking number for each predetermined number of banknotes at the start of banknote stacking on the stage. The count value of the encoder corresponding to the unit is stored in the encoder value storage unit, and from these data, per count for each predetermined number of accumulated banknotes The number of stacked sheets is calculated by the stacking number calculating unit for each count and stored in the latest calculated value storage unit, and a new encoder is used to store the latest calculated value and a preset near-full determination number of stacked banknotes. The near-full judgment count value is obtained, and the near-full state of the banknote storage cassette is detected when the new near-full judgment count value is equal to or greater than the preset old near-full judgment count value. Near full calculation structure of gold machine.