WO2011092824A1

WO2011092824A1 - Paper sheet handling device and paper sheet handling method

Info

Publication number: WO2011092824A1
Application number: PCT/JP2010/051154
Authority: WO
Inventors: 昌志西川
Original assignee: グローリー株式会社
Priority date: 2010-01-28
Filing date: 2010-01-28
Publication date: 2011-08-04

Abstract

A paper sheet handling device and a paper sheet handling method which are, by consideration of the amount of oblique movement of paper sheets being conveyed, capable of more accurately determining chaining (abnormal nearness) and non-chaining of the paper sheets than in a conventional paper sheet handling device. The amounts of oblique movement of two paper sheets having sequentially passed through at least two passage sensors, which detect the passage of the paper sheets, are individually derived on the basis of the detection by the at least two passage sensors. Also, the amount of spacing between the paper sheets is derived from the derived amounts of oblique movement. Then, the amount of spacing between the paper sheets and a reference paper sheet spacing are compared with each other. If the amount of spacing between the paper sheets is less than or equal to the reference paper sheet spacing, a gate means is driven to switch the conveyance path for the two paper sheets, which have sequentially passed through the at least two passage sensors, to a path for rejection.

Description

Paper sheet processing apparatus and paper sheet processing method

The present invention relates to a paper sheet processing apparatus and a paper sheet processing method for processing paper sheets. In particular, a paper sheet processing apparatus that monitors the transport status of paper sheets when transporting paper sheets including banknotes, checks and other securities, postcards, sealed letters, etc. on a predetermined transport path. And a paper sheet processing method.

When securities such as banknotes and checks, paper sheets such as postcards and sealed letters are transported one by one at a time, the paper sheets may be skewed. When the paper sheets are skewed with respect to the transport direction, a transport failure such as a jam may occur in the gate means that switches the transport direction of the paper sheets one by one. Furthermore, in the gate means, the paper sheets may be damaged.

In order to avoid such a problem, Japanese Patent Application Laid-Open No. 11-292350 detects the state of paper sheet conveyance on the upstream side of the gate means, and determines the operation time of the gate means according to the degree of skew of the paper sheets. Propose to change.

However, for paper sheets that are transported at narrow intervals within a predetermined interval, that is, paper sheets that are transported in a so-called chained state, even if the operating time of the gate means is changed to the shortest, each paper sheet It is not possible to sufficiently avoid the problem that jamming or the like may occur due to the operation of the gate means that should correspond to the class.

Therefore, at present, a batch rejection method is adopted in which a plurality of paper sheets are collectively rejected at once for the paper sheets being conveyed in a so-called chained state.

In addition, Japanese Patent Application Laid-Open No. 02-238591 discloses a paper sheet that is conveyed in a so-called chained state once the paper sheet arrives at an upstream sensor in order to keep the operation of the gate means in time. Proposes to stop leaf transport. However, since this method extremely decreases the throughput, it cannot withstand practical use.

Now, in order to detect the linkage state of paper sheets, conventionally, an optical path sensor provided on the transport path has been used. That is, when a paper sheet passes over the path sensor, the path of light incident on the path sensor is blocked (shielded), and thereby the paper sheet on the path sensor. The passage timing can be detected.

If there is no skew of the paper sheets, the actual interval of the paper sheets can be calculated based only on the passage timing of the paper sheets by a single passage sensor. Therefore, the discrimination criterion to be compared with the calculated interval can be directly determined from the operating time of the gate means. Then, by comparing the calculated interval with a preset discrimination criterion, it is possible to discriminate whether or not those sheets are in a so-called chained state.

However, in a situation where there is a possibility that the skew of the paper sheet exists, the actual interval between the paper sheets cannot be calculated based only on the passage timing of the paper sheet by a single passage sensor. If it is determined based on the chain determination criterion when there is no skew of the paper sheets, the skewed paper sheets are not in time for the switching operation of the gate means, and a jam occurs. In addition, when judged based on the chain judgment criterion considering the maximum allowable skew amount of paper sheets, the paper sheets having no skew / small skew are transported in an unnecessarily large interval. As a result, the processing throughput of the paper sheets decreases.

Summary of the Invention

The present invention has been devised to pay attention to the above problems and to effectively solve them. It is an object of the present invention to measure the degree of skew of a paper sheet being conveyed and to take into account the degree of skew, so that the paper sheets are more accurately chained (abnormally approached) / unchained than before. It is an object of the present invention to provide a paper sheet processing apparatus and a paper sheet processing method capable of determining the above.

The present invention provides a conveyance path through which paper sheets are conveyed one by one, a rejection path that is branched from the conveyance path, and a gate unit that switches the conveyance path from the conveyance path to the rejection path. And at least two or more passage sensors provided at a position upstream of the gate means on the conveyance path and detecting the passage of the paper sheets, and skew feeding of the paper sheets passed based on the detection result by the passage sensor A skew amount deriving unit for deriving an amount, and a paper sheet interval amount deriving unit for deriving a paper sheet interval amount based on each derived skew amount for two sheets that have passed in order. Paper sheet reference interval storage means for storing in advance a paper sheet reference interval as a criterion for determining whether or not the paper sheet is in a chained state, and paper derived by the paper sheet interval amount deriving means. The interval between leaves When the paper sheet reference interval stored in the interval storage means is equal to or smaller than the paper sheet reference interval, the gate means is driven to convey the two sheets passed in order. A paper sheet processing apparatus comprising: a reject control unit that switches a path to a reject path.

According to the present invention, the skew amount of the paper sheet being conveyed is derived, and the paper sheet interval amount is derived in consideration of the derived skew amount of the two sheets that have passed in order. Therefore, the paper sheet interval amount can be grasped more accurately. Therefore, it is possible to determine the linkage (abnormal approach) / non-linkage of paper sheets more accurately than in the past, and as a result, the processing throughput of paper sheets per unit time can be increased.

The passage sensor may be constituted by, for example, a line sensor that functions as an identification unit that identifies paper sheets. Alternatively, the passage sensor may be constituted by, for example, two or more light-shielding sensors arranged so as to be aligned in a direction perpendicular to the paper sheet conveyance direction.

Further, it is preferable that the paper sheet interval amount deriving means derives a paper sheet interval amount corresponding to each derived skew feed amount with reference to a preset correspondence table. .

In addition, the paper sheet interval amount deriving means derives the paper sheet interval amount in consideration of the length of the paper sheet in the conveyance direction (when the paper sheet is a bill, the bill length). It is preferable.

In this case, the paper sheet interval amount deriving means refers to a preset correspondence table, and the paper sheets corresponding to the derived skew feed amount and the length of the paper sheet in the transport direction. It is preferable to derive the interval amount.

In addition, the present invention provides a conveyance path through which paper sheets are conveyed one by one, a rejection path branched from the conveyance path, and a gate that switches the conveyance path from the conveyance path to the rejection path. As a criterion for determining whether or not the paper sheets are in a chained state, at least two passage sensors provided at a position upstream of the gate means on the transport path and detecting the passage of the paper sheets. A paper sheet reference interval storage means for storing in advance a paper sheet reference interval, and a paper sheet processing method for processing a paper sheet using a paper sheet processing apparatus, wherein the passage sensor A skew amount derivation step for deriving the skew amount of the paper sheet that has passed based on the detection result of the paper sheet, and a paper sheet based on the derived skew amount for each of the two paper sheets that have passed in sequence. Paper sheet interval amount derivation process The paper sheet interval amount derived by the paper sheet interval amount derivation step is compared with the paper sheet reference interval stored by the paper sheet reference interval storage means, and is equal to or less than the paper sheet reference interval. In this case, a paper sheet processing comprising: a reject control step of driving the gate means to switch the transport path of the two paper sheets that have passed sequentially to a reject path. Is the method.

Further, the paper sheet interval amount deriving step derives the paper sheet interval amount in consideration of the length of the paper sheet in the transport direction (when the paper sheet is a bill, the bill length). It is preferable.

It is the schematic for demonstrating an example of the process (algorithm) which derives the skew angle of paper sheets based on the detection result by a line sensor. It is the schematic for demonstrating an example of the process (algorithm) which derives the skew angle of paper sheets based on the detection result by two light shielding sensors. It is the schematic for demonstrating the state in which the front banknote (an example of paper sheets) is skewing. It is the same figure as FIG. 3 at the time of changing the bill length (length of a conveyance direction) of a banknote (an example of paper sheets). It is a table | surface figure which shows that required distance changes with the bill length (length of a conveyance direction) of banknote (an example of paper sheets), and skew angle about the distance between banknotes detected. To describe an example of a process (algorithm) for deriving a bill (paper sheet) interval in consideration of a bill length (an example of a paper sheet) and a skew angle. FIG. It is the schematic for demonstrating the state in which the subsequent banknote (an example of paper sheets) is skewing. It is a composition schematic diagram of a bill processing device by one embodiment of the present invention. It is the structure schematic of the banknote processing apparatus by other embodiment of this invention.

First, a case where a line sensor is provided as a passage sensor that detects passage of a paper sheet at two or more points on a paper sheet conveyance path will be described. Based on the detection result by the line sensor, the skew angle as the skew amount of the paper sheet is derived as follows.

FIG. 1 is a schematic diagram for explaining an example of a process (algorithm) for deriving a skew angle of a paper sheet 11 based on a detection result by a line sensor. In the example shown in FIG. 1, the shape of the paper sheet 11 is extracted from the entire image acquired by the line sensor by a computer using a known algorithm, and the inclination of the center line of the paper sheet 11 is the skew angle. Calculated. That is, the computer functions as a skew amount (skew angle) deriving means. Specifically, as shown in FIG. 1, the coordinates of the points on the center line are set to (Xi, Yi) (i = 1,... .., N), the slope of the center line (skew angle) can be obtained from Equation 1 below.

For example, when the following eight coordinates are obtained as the coordinates of a point on the center line, the inclination (skew angle) of the center line is 10 degrees.
(X0, Y0) = (104, 115)
(X1, Y1) = (130, 120)
(X2, Y2) = (157,124)
(X3, Y3) = (183, 129)
(X4, Y4) = (209, 134)
(X5, Y5) = (236, 138)
(X6, Y6) = (262, 143)
(X7, Y7) = (288, 148)

Next, as a passage sensor for detecting the passage of the paper sheet at two or more points on the paper sheet conveyance path, two light shielding sensors are arranged in a direction perpendicular to the paper sheet conveyance direction. The case where it is arranged will be described. Based on the detection results of the two light shielding sensors, the skew angle of the paper sheet is derived as follows.

FIG. 2 is a schematic diagram for explaining an example of a process (algorithm) for deriving the skew angle of the paper sheet 21 based on the detection results by the two light shielding sensors. In the example shown in FIG. 2, the paper sheet has a time difference between the timing of light shielding (paper sheet passage) detection by one light shielding sensor VP1R and the timing of light shielding (paper sheet passage) detection by the other light shielding sensor VP1L. By multiplying the conveyance speed by 21, the “deviation amount” X of the paper sheet 21 at the position of the two light shielding sensors can be obtained. Alternatively, X may be obtained by using a pulse of a rotary encoder that outputs a mechanical clock synchronized with the transport amount of paper sheets. On the other hand, since the interval L between the detection positions of the two light shielding sensors is known, the inclination (skew angle) of the paper sheet 21 can be obtained from the following Expression 2. This calculation is performed by a computer, for example. That is, the computer functions as a skew amount (skew angle) deriving unit.

For example, when X = 10.23 mm and L = 58 mm, the skew angle is 10 degrees.

As an example of paper sheets, the case where a banknote is conveyed will be described in more detail with reference to FIGS. FIG. 3 is a schematic diagram for explaining a state in which the previous banknote is skewed. In the example of FIG. 3, the conveyance path width is 184 mm, the interval between the two light shielding sensors VP1L and VP1R is 58 mm, and the size of the bill to be conveyed is a bill length of 60 mm and a bill width of 120 mm. In the example of FIG. 3, as shown in FIG. 3, the amount of deviation on the rear side of the banknote is maximized when one end on the front side of the banknote is positioned at the side edge of the transport path. Moreover, in the example of FIG. 3, the required distance (required space | interval) between the banknotes determined from the time required for the drive of the gate means (for example, branching claw) for switching a conveyance path | route is 42.8 mm. In addition, in FIG. 3, PSCT 2 is a timing sensor that starts the operation of the branch claw 30. The operation of the branch claw 30 starts when a bill that needs to branch to the sensor PSCT2 arrives. Similarly, even when a banknote that needs to return the branching claw 30 arrives, the operation of the branching claw 30 starts based on the output of the sensor PSCT2.

And in order to ensure the said required distance (42.8 mm) in an actual banknote as shown in FIG. 3, the sensor (one of the two light-shielding sensors VP1L and VP1R which detects late completion of passage of a banknote) As for the distance to the next bill obtained based on the detection timing (VP1L in FIG. 3), when the bill is skewed, a value exceeding 42.8 mm is required as follows. That is, in the example of FIG. 3, the case where the skew angle of the next (later) banknote is 0 degree is shown, but if the skew angle of the previous banknote is 5 degrees, 47.9 mm is obtained. If the skew angle of the previous banknote is 10 degrees, 52.0 mm is required, and if the skew angle of the previous banknote is 15 degrees, 55.5 mm is required.

Here, each value varies depending on the bill length. For example, when the size of the bill to be conveyed is a bill length of 85 mm and a bill width of 120 mm, as shown in FIG. 4, two pieces are used to secure the necessary distance (42.8 mm) in the actual bill. When the banknote is skewed with respect to the distance to the next banknote obtained based on the detection timing of the sensor (VP1L in FIG. 4) that detects the passage completion of the banknote later among the light shielding sensors VP1L and VP1R Requires a value exceeding 42.8 mm as follows. That is, in the example of FIG. 4, the case where the skew angle of the next (later) banknote is 0 degree is shown, but if the skew angle of the previous banknote is 5 degrees, 47.7 mm If the skew angle of the previous banknote is 10 degrees, 51.3 mm is required, and if the skew angle of the previous banknote is 15 degrees, 53.8 mm is required.

Fig. 5 shows a table summarizing these numbers by bill length and skew angle.

Therefore, it is effective to adopt a correction value based on the correspondence table as shown in FIG. 6 based on the numerical values in FIG. That is, the correction values corresponding to the classification by the skew angle shown in the left column of the table of FIG. 6 and the classification by the bill length shown in the upper column of the table are the bill values of the bills of the two light shielding sensors VP1L and VP1R. Subtract from the distance to the next banknote obtained based on the detection timing of the sensor that detects the completion of passage later (VP1L in FIGS. 3 and 4) (this is the actual distance between banknotes) It is effective to compare the result with 42.8 mm which is a discrimination standard (paper sheet standard interval amount). Here, in consideration of a so-called margin, for example, 45 mm may be adopted as the determination reference (paper sheet reference interval amount).

Next, FIG. 7 is a schematic diagram for explaining a state in which a later bill is skewed. As shown in FIG. 7, the amount of deviation on the front side of the banknote is maximized when one end on the rear side of the banknote is positioned at the side edge of the transport path.

And in order to ensure the said required distance (42.8 mm) in an actual banknote as shown in FIG. 7, the sensor (one of the two light-shielding sensors VP1L and VP1R which detects the passage start of a banknote early) ( As for the distance to the previous banknote obtained based on the detection timing (VP1L) in FIG. 7, when the banknote is skewed, a value exceeding 42.8 mm is required as follows. That is, in the example of FIG. 7, the case where the skew angle of the preceding banknote is 0 degree is shown, but if the skew angle of the subsequent banknote is 5 degrees, 47.9 mm is required. If the skew angle of the subsequent banknote is 10 degrees, 52.0 mm is required, and if the skew angle of the subsequent banknote is 15 degrees, 55.5 mm is required.

Here, each value varies depending on the bill length as described with reference to FIGS. 4 and 5.

From the above, it is effective to adopt a correction value based on a correspondence table as shown in FIG. That is, the correction values corresponding to the classification by the skew angle shown in the left column of the table of FIG. 6 and the classification by the bill length shown in the upper column of the table are the bill values of the bills of the two light shielding sensors VP1L and VP1R. Subtract from the distance from the previous banknote obtained based on the detection timing of the sensor (VP1L in FIG. 7) that detects the start of passage earlier, and determine the subtraction result. It is effective to compare with the reference (paper sheet reference interval amount).

In summary, the virtual rear end of the previous banknote is determined based on the detection timing of the sensor (VP1L in FIGS. 3 and 4) that detects late completion of the passage of the banknote out of the two light shielding sensors VP1L and VP1R. Then, the virtual front end of the subsequent banknote is determined based on the detection timing of the sensor (VP1L in FIG. 7) that detects the passage start of the banknote earlier among the two light shielding sensors VP1L and VP1R. And the temporary inter-banknote distance is calculated from the difference between these detection timings and the banknote transport speed. From there, the correction value (FIG. 6) based on the skew angle and bill length of each banknote is subtracted, thereby obtaining the distance used as the actual banknote interval in the present invention. The distance is compared with the discrimination criterion (paper sheet reference interval amount).

According to the principle as described above, the bill interval is derived in consideration of the derived skew angle for the two bills that have passed in order, so that the bill interval can be grasped more accurately. It is possible to discriminate banknote linkage (abnormal approach) / non-linkage more accurately than in the past. Therefore, as a result, the processing throughput of banknotes per unit time can be increased.

FIG. 8 is a schematic configuration diagram of a banknote handling apparatus according to an embodiment of the present invention. In the banknote handling apparatus 101 in FIG. 8, a transport path 103 through which banknotes as paper sheets are transported one by one, a reject path 104 branched from the transport path 103, and a reject path from the transport path 103. Gate means 105 for switching the transfer route to 104 is provided. In the example of FIG. 8, the gate means 105 is formed as a circular branch portion having six branch portions, and each branch portion is configured as a three-way branch portion.

Also, an identification unit 102 is provided at a position upstream of the gate means 105 on the transport path 103. The identification unit 102 is provided with a line sensor that also functions as an identification means for identifying a banknote as a passage sensor that detects the passage of the banknote at two or more points. In addition, a control unit (PC) 106 is connected to the identification unit 102, and the control unit 106 derives a skew angle as a skew amount of a bill that has passed based on a detection result by a line sensor. It functions as a (skew amount) deriving means, and functions as a bill interval deriving means (paper sheet interval amount deriving means) for deriving a bill interval based on the derived skew angles for two bills that have passed in order. The banknote reference interval storage means for preliminarily storing the banknote reference interval as a criterion for determining whether or not the banknote is in a chained state, and the banknote interval derived by the function of the banknote interval deriving means Compared with the banknote reference interval stored by the function of the interval storage means, when it is equal to or less than the banknote reference interval, the gate means 105 is driven, and the transport path of the two bills 102 that have passed in order is And functions as a reject control means for switching to injecting passage 104.

In FIG. 8, 111 is a depositing port, 113 is a dispensing port, 114 is a deposit rejecting port, and 115 is a temporary holding part.

In FIG. 8, 110 is a deposit / withdrawal unit, 120 is a storage / feeding unit, and 130 is a storage unit. Furthermore, 121a to 121e are stackers, 121f is a scrutiny cassette, and 131 is a stacking unit.

The apparatus shown in FIG. 8 operates as follows. That is, the deposited banknotes are fed out from the deposit port 111 one by one and reach the identification unit 102 through the conveyance path 103. In the identification unit 102, the denomination and authenticity of the banknote are identified. At the same time, the skew angle of the banknote is derived by the line sensor, and the skew angle derived for each of the two sheets that have passed in order. Based on the above, it is more preferable that the bill interval is derived in consideration of the bill length of each bill as described above.

Normal banknotes that are normally identified are sent via a conveyance path 103 to a predetermined stacker that stores a predetermined denomination. On the other hand, among the deposited banknotes, unidentifiable banknotes, fake banknotes, banknotes that are severely damaged, and the like are sent to the deposit reject port 114. And among the banknotes deposited, banknotes being conveyed in a chained state are also sent to the deposit rejection port 114. Whether the banknote transport mode is in a chained state is determined by the control unit 106 by performing the functions described above.

Also, among banknotes to be withdrawn, banknotes that cannot be identified, fake banknotes, and banknotes that are severely damaged are temporarily suspended without being withdrawn. Of the banknotes to be withdrawn, banknotes being conveyed in a chained state are also sent to the withdrawal port 115. Whether the banknote transport mode is in a chained state is determined by the control unit 106 by performing the functions described above. The reject banknotes saved in the temporary storage unit are fed out again and stored in any stacker of the storage and feeding unit 120.

FIG. 9 is a schematic configuration diagram of a banknote handling apparatus according to another embodiment of the present invention. In the banknote handling apparatus 201 in FIG. 9, a transport path 203 through which banknotes 202 as paper sheets are transported one by one, a reject path 204 branched from the transport path 203, and a reject path from the transport path 203. Gate means 205 for switching the transport path to the passage 204 is provided.

Further, at a position upstream of the gate means 205 on the transport path 203, a mechanical clock pulse is used to detect whether or not the bill 202 is in a passing state as a passage sensor that detects passage of the bill 202 at two or more points. Two sensors 208 are provided.

Further, a gate control unit 209 is connected to the gate unit 205, and a skew angle as a skew amount of the banknote 202 passed based on the detection result by the sensor 208 is derived to the gate control unit 209. Further connected is a control unit 210 that functions as a skew angle deriving unit and functions as a banknote interval deriving unit that derives a banknote interval based on the derived skew angles of two banknotes that have passed in order. . The gate control unit 209 functions as a bill reference interval storage unit that stores in advance a bill reference interval as a criterion for determining whether or not the bill 202 is in a chained state, and is derived by the function of the bill interval deriving unit. The banknote interval is compared with the banknote reference interval stored by the function of the banknote reference interval storage means. When the banknote interval is equal to or less than the banknote reference interval, the gate means 205 is driven to sequentially pass two banknotes. The conveyance path 202 is switched to the rejection path 204. In addition, 211 is a timing sensor which detects banknote passage.

The apparatus shown in FIG. 9 operates as follows. That is, banknotes 202 are conveyed one by one through the conveyance path 203 and reach the sensor 208. Based on the detection output of the sensor 208, the skew angle of the banknote 202 is derived by the control unit 210. Further, based on the skew angles derived for the two sheets sequentially passed by the control unit 210, more preferably, the bill length of each banknote 202 is also taken into consideration as described above. An interval is derived.

The gate control unit 209 compares the derived banknote interval with the stored banknote reference interval, and drives the gate unit 205 when it is equal to or less than the banknote reference interval. The driving timing is determined (controlled) based on the detection output of the timing sensor 211. In this case, the transport path of the two bills 202 that have passed in order is switched to the reject passage 204.

The description of the above embodiment is made based on a mode of deriving a skew angle as a skew amount, but the present invention is not limited to such a mode. That is, the object of the present invention can be similarly achieved even when another physical quantity corresponding to the skew amount is used instead of the skew angle. For example, an aspect may be employed in which the output value of a sensor that can be used to obtain the skew angle is used as it is as an input value for control, and a physical quantity called the skew angle is not derived (calculated).

Similarly, the description of the above embodiment has been made based on an aspect in which the interval between paper sheets (for example, banknotes) is derived as the paper sheet interval amount, but the present invention is not limited to such an aspect. . That is, the object of the present invention can be similarly achieved even if another physical quantity corresponding to the paper sheet (banknote) interval is used instead of the paper sheet (banknote) interval. For example, the output value of the sensor that can be used for obtaining the paper sheet (banknote) interval is used as the input value for control as it is, and the physical quantity of the paper sheet (banknote) interval is not derived (calculated). Can be employed.

Claims

A transport path through which paper sheets are transported one by one;
A reject passage provided by branching from the conveyance path;
Gate means for switching the transport path from the transport path to the reject path;
A passage sensor provided at a position upstream of the gate means on the conveyance path and detecting passage of the paper sheet at two or more points;
Skew amount deriving means for deriving the skew amount of the paper sheets that have passed based on the detection result by the passage sensor;
Paper sheet interval deriving means for deriving a paper sheet interval amount based on the derived skew amount for two sheets that have passed in sequence;
A paper sheet reference interval amount storage means for storing in advance a paper sheet reference interval amount as a criterion for determining whether or not the paper sheet is in a chained state;
The paper sheet reference interval amount derived by the paper sheet interval amount deriving means is compared with the paper sheet reference interval amount stored by the paper sheet reference interval amount storage means. A reject control means for driving the gate means to switch the transport path of the two sheets passed in order to a reject path when the amount is less than or equal to the amount;
A paper sheet processing apparatus comprising:
The paper sheet processing apparatus according to claim 1, wherein the passage sensor includes a line sensor that functions as an identification unit that identifies paper sheets.
2. The paper sheet processing apparatus according to claim 1, wherein the passage sensor includes two or more light-shielding sensors arranged in a direction perpendicular to a paper sheet conveyance direction. .
The sheet interval amount deriving means is configured to derive a sheet interval amount corresponding to each derived skew amount with reference to a preset correspondence table. The paper sheet processing apparatus according to any one of claims 1 to 3.
5. The paper sheet interval amount deriving means derives the paper sheet interval amount in consideration of the length in the transport direction of the paper sheet. The paper sheet processing apparatus according to 1.
The sheet interval amount deriving means refers to a preset correspondence table and derives the sheet interval amount corresponding to each derived skew amount and the length of the sheet in the transport direction. The paper sheet processing apparatus according to claim 5, wherein the paper sheet processing apparatus is configured as described above.
A transport path through which paper sheets are transported one by one;
A reject passage provided by branching from the conveyance path;
Gate means for switching the transport path from the transport path to the reject path;
A passage sensor provided at a position upstream of the gate means on the conveyance path and detecting passage of the paper sheet at two or more points;
A paper sheet reference interval storage means for storing in advance a paper sheet reference interval as a criterion for determining whether or not the paper sheet is in a chained state;
A paper sheet processing method for processing paper sheets using a paper sheet processing apparatus comprising:
A skew amount derivation step for deriving a skew amount of paper sheets that have passed based on the detection result by the passage sensor;
A paper sheet interval amount derivation step for deriving a paper sheet interval amount based on the derived skew amount for two sheets that have passed in sequence;
The paper sheet interval amount derived by the paper sheet interval amount deriving step is compared with the paper sheet reference interval stored by the paper sheet reference interval storage means, and is equal to or less than the paper sheet reference interval. In some cases, a reject control step of driving the gate means to switch the transport path of the two paper sheets that have passed in sequence to a reject path;
A paper sheet processing method characterized by comprising:
8. The paper sheet according to claim 7, wherein the paper sheet interval amount deriving step derives the paper sheet interval amount in consideration of the length in the transport direction of the paper sheet. Kind processing method.