JP2010073048A - Apparatus and method for processing paper sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and method for processing paper sheets that discriminate types and series of paper sheets. <P>SOLUTION: Images of multiple types of paper sheets are stored in advance. The paper sheet is illuminated. The light reflected from the paper sheet is received and converted into an electric signal to obtain an image of the paper sheet. The type of paper sheet being transferred is discriminated based on the types of the obtained image of paper sheet and the stored images of the multiple types of paper sheets. A security detection means to be used for detecting a security element of the paper sheets is selected from multiple types of security detection means that detect security elements different from each other according to the types of the discriminated paper sheets. The security element is detected by the selected security detection means. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to, for example, a paper sheet processing apparatus and a paper sheet processing method for examining a transported paper sheet.

  Conventionally, securities or paper sheets such as banknotes are counted and inspected, and a device body that performs sealing processing or cutting processing according to the inspection result is connected to the device body by a cable such as USB or LAN, A paper sheet inspection apparatus (paper sheet processing apparatus) comprising a management terminal that manages the counting information of the device body has been put into practical use.

  In such a sheet processing apparatus, the sheets fed into the loading unit are taken one by one, the fetched sheets are sandwiched by a transport belt and transported to a reader, and the sheets are transported by the reader. Based on the information read from the surface of the paper, the paper sheets are sorted and accumulated.

As a reading device of a paper sheet processing apparatus, light is projected onto the paper sheet, the reflected light reflected by the surface of the paper sheet is received and data (paper sheet image) is acquired in advance. A paper sheet processing apparatus is provided that compares the stored images of various paper sheets with each other to determine the type of paper sheet (see, for example, Patent Document 1).
JP 7-311867 A

  In recent years, an old series of paper sheets subjected to fine printing and watermark printing and a new series of paper sheets whose security is further enhanced to prevent forgery are mixedly distributed. In the new series of paper sheets, infrared absorbing ink printing, holograms, or magnetic threads are used as security elements. In order to switch the papers currently in circulation from the old series to the new series, in addition to discriminating the types of papers, it is necessary to identify the paper series and collect the old series of papers. It has been.

  However, there is almost no difference in design between the old series and the new series, and there are papers that can be identified only by security elements. However, there is a problem that the paper sheet processing apparatus may not be able to determine the series of paper sheets.

  Accordingly, an aspect of the present invention solves the above-described problems, and provides a paper sheet processing apparatus and a paper sheet processing method that can determine the type and series of paper sheets. It is in.

  A paper sheet processing apparatus according to an embodiment of the present invention includes a first storage unit that stores images of a plurality of types of paper sheets in advance, a light source that projects light on the paper sheets, and the paper sheet. An image acquisition unit that receives reflected light reflected by the image and converts it into an electrical signal to acquire a paper sheet image; the paper sheet image acquired by the image acquisition unit; and the first storage unit. Ticket type discrimination means for discriminating the type of the paper sheet from the stored image of each type of paper sheet, a plurality of types of security detection means for detecting security elements of different types, and the ticket A selection unit that selects a security detection unit from the plurality of types of security detection units according to the type determined by the type determination unit, and the security detection unit that selects the security detection unit selected by the selection unit. Comprising a control means for sensing elements, a.

  Further, the paper sheet processing method as one embodiment of the present invention prestores each image of a plurality of types of paper sheets, projects the light onto the paper sheets, and reflects the reflected light reflected by the paper sheets. It receives light and converts it into an electrical signal to acquire a paper sheet image, and determines the type of the paper sheet from the acquired paper sheet image and each image of each type of paper sheet stored in advance. The security element is detected, and detection of a security element corresponding to the determined type is selected from detection of a plurality of different security elements, and the selected security element is detected.

  According to one aspect of the present invention, it is possible to provide a paper sheet processing apparatus and a paper sheet processing method capable of discriminating the type and series of paper sheets.

  Hereinafter, a paper sheet processing apparatus and a paper sheet processing method according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram schematically illustrating a configuration example of a paper sheet processing apparatus 1. In the paper sheet processing apparatus 1, for example, a plurality of types of paper sheets (here, each paper sheet is assumed to have a rectangular shape) having different sizes, designs, security elements, and the like are collectively input and input. All the paper sheets are acquired, security elements are detected, the type and series of each paper sheet are determined based on the acquired image and detection result, and each paper sheet is classified and accumulated by type. The process is performed.

  Here, it is assumed that the paper sheets input into the paper sheet processing apparatus 1 are a plurality of types of banknotes in which old and new series are mixed. As an old series of banknotes, for example, there are those subjected to fine printing and watermark printing. In addition, as a new series of banknotes, for example, there are those provided with infrared absorption ink printing, holograms, magnetic threads, or the like.

  Fine printing is printing of fine characters that cannot be reproduced by normal printing, and prevents forgery by copying or scanning. Watermark printing is a pattern formed by adjusting the thickness of paper fibers used for banknotes.

  Infrared absorbing ink printing is printing with ink that has the property of absorbing infrared light and reflecting visible light. A portion printed with infrared absorbing ink in the infrared image becomes a dark spot. The paper sheet processing apparatus 1 can acquire the infrared image of a banknote, and can determine the presence or absence of the printing location by infrared absorption ink. Infrared absorbing ink absorbs only infrared light and reflects other visible light, and cannot be confirmed with the naked eye.

  The magnetic thread is a printed portion with magnetic ink in which magnetic powder having magnetism is blended. The paper sheet processing apparatus 1 can perform magnetic detection on a banknote and can determine the presence or absence of a magnetic thread based on the presence or absence of magnetism.

A hologram is a pattern formed on a metal foil such as aluminum using a laser beam, and an image and a color that are visible change depending on a viewing angle. The paper sheet processing apparatus 1 can detect metal with respect to a banknote and can determine the presence or absence of a hologram based on the presence or absence of metal. The paper sheet processing apparatus 1 includes a first module 1A, a second module 1B, and a third module. It is assumed that the module 1C is configured. The first module 1A mainly performs operations by an operator, taking out banknotes, inspecting and inspecting banknotes, and the like. The second module 1B mainly performs stacking and sealing of banknotes. The third module 1C mainly performs banknote accumulation, sealing, and cutting.

  The paper sheet processing apparatus 1 includes a control unit 11 inside the apparatus. The control unit 11 controls the entire sheet processing apparatus 1, and stores a CPU, a buffer memory such as a RAM functioning as a work area of the CPU, various programs executed by the CPU, control data, and the like. It is composed of a program memory such as a ROM or a non-volatile memory. The control unit 11 realizes various functions by the CPU executing programs stored in the program memory. For example, the control unit 11 controls operations such as execution, stop, and restart of processing on banknotes. In addition, the control unit 11 performs data communication with an external device such as a counting device, for example.

  The paper sheet processing apparatus 1 is provided with a loading unit 35 into which a plurality of banknotes are loaded. The insertion unit 35 aligns the lower end side (one long end side) along the longitudinal direction of all banknotes with the stage and places a backup plate (not shown) in the plane direction of the banknotes along the stage. Move it. Thereby, the banknote in the insertion part 35 moves to the extraction part 35a. The take-out portion 35a is constituted by a pair of take-out rollers. When the pair of take-out rollers rotate, banknotes on the stage are taken out onto the transport path 36 in order from the end.

  The conveyance path 36 includes a main conveyance path 36a and a plurality of branch conveyance paths 36b to 36h branched from the main conveyance path 36a by gates G (G11, G21, G22, G51, G52, and G53). . Each conveyance path 36 is composed of a pair of upper and lower belts and a plurality of rollers, and the conveyance belts sandwiching the banknotes move as the rollers rotate to convey the banknotes.

  On the main transport path 36a immediately after the input unit 35, an alignment and positioning unit (not shown) is provided. The alignment and positioning unit corrects the skew and shift of each banknote in order to prevent problems caused by the skew and shift of the banknote taken out on the main transport path 36a by the takeout part 35a. Further, an inspection unit 37 for detecting features such as the type of banknote, front and back, top and bottom, the presence or absence of dirt and damage, security elements, and the like is provided on the main transport path 36a immediately after the alignment and positioning unit.

  The inspection unit 37 includes a plurality of detection units such as an optical detection unit 37a and a security detection unit 37b. The optical detection unit 37a has a function of acquiring an image of a banknote by capturing the banknote being conveyed, and includes, for example, a charge-coupled device (CCD). The security detection unit 37b has a function of detecting the security element of the banknote being conveyed, and includes, for example, an infrared image acquisition unit that acquires an infrared image of a banknote, a magnetic detection unit, and a metal detection unit. is doing.

  Further, the inspection unit 37 outputs the processing result by each detection unit to the control unit 11. The control unit 11 inspects the banknote based on the image of the banknote acquired by the inspection unit 37, determines whether the banknote is a correct ticket, a damaged ticket, or an excluded ticket, and further determines the type of banknote. Moreover, the control part 11 discriminate | determines new and old of a series etc. based on the detection result of the security element of the banknote discriminated as the correct bill. Furthermore, the control part 11 performs the counting process which counts the number of sheets for each type of stacked and cut bills.

  A plurality of gates G11, G21, G22, G51, G52, and G53 are provided on the main conveyance path 36a on the downstream side of the inspection unit 37 for selectively switching the conveyance direction of banknotes based on control by the control unit 11. It has been.

  The gate G11 provided on the most upstream side branches the conveyance direction of banknotes from the main conveyance path 36a to the exclusion conveyance path as the branch conveyance path 36b. At the end of the branch conveyance path 36b branched through the gate G11, a reject unit Rej for rejecting and collecting banknotes to be excluded is provided.

  The banknotes to be rejected conveyed to the reject unit Rej are banknotes that are determined to be incapable of processing in a subsequent processing unit such as banknotes that have been determined to be picked up by the control unit 11, and a predetermined banknote It is a banknote etc. determined to have greatly skewed beyond the level. In addition, banknotes determined by the control unit 11 as having a possibility of fake bills or banknotes for which no feature amount has been detected in the inspection unit 37 are also rejected to the reject unit Rej. The reject unit Rej is disposed in the vicinity of the input unit 35 and can be accessed from the outside.

  Gates G21, G22, G51, G52, and G53 are sequentially provided on the main transport path 36a on the downstream side of the gate G11. The gate G21 branches and conveys the banknote conveyed on the main conveyance path 36a in the direction of the branch conveyance path 36c to the stacking apparatus A1. The gate G22 branches and conveys the banknote conveyed on the main conveyance path 36a in the direction of the branch conveyance path 36d to the stacking apparatus A2. The gate G51 branches and conveys the banknote conveyed on the main conveyance path 36a in the direction of the branch conveyance path 36e to the stacking apparatus B1. The gate G52 causes the banknotes conveyed on the main conveyance path 36a to be branched and conveyed in the direction of the branch conveyance path 36f to the stacking apparatus B2. Further, the gate G53 selectively distributes the banknotes conveyed on the main conveyance path 36a to either the branch conveyance path 36g to the non-payment stacking unit Aud or the branch conveyance path 36h to the cutting processing unit SD. is there.

  Each of the stacking devices A1, A2, B1, and B2 includes a sealing processing unit 41, a band storage unit 42, and a storage unit 43, respectively. The banknotes are sequentially stacked in the sealing processing unit 41 until the banknotes branched and transported from the main transport path 36a reach a predetermined number. When the banknote reaches a predetermined number, the sealing processing unit 41 bundles the banknotes that have reached the predetermined number using the band stored in the band storage unit 42. A predetermined number of banknotes bundled by this band are bundled into one bundle. The storage unit 43 sequentially stores banknotes held in a bundle by the sealing processing unit 41. Usually, the number of the banknotes is determined when stored in the storage unit 43.

  Moreover, the banknote determined by the control part 11 as a banknote or an old series banknote is conveyed on the main conveyance path 36a, passes each gate G21, G22, G51, and G52, and reaches gate G53. The banknotes that have reached the gate G53 are selectively conveyed by the gate G53 to the non-conforming bill accumulating unit Aud or the cutting processing unit SD. The cutting processing unit SD cuts all banknotes that have been determined to be damaged and have been conveyed. The banknote stacking unit Aud collects a part of banknotes determined to be banknotes, and inspects whether or not the stacked banknotes were to be banknotes. For example, in the case where the collection rate on the non-slip sheet stacking unit Aud is 10%, 10 banknotes out of 100 are stacked on the non-slip ticket stacking unit Aud.

  A plurality of detection sensors are provided on the main transport path 36a and the branch transport paths 36b to 36h. Each detection sensor detects the presence or absence of the banknote on the conveyance path 36. The detection output of each detection sensor is supplied to the control unit 11. Accordingly, the control unit 11 can determine the position of the banknote in the transport path 36 based on the detection output from each detection sensor, or can determine a transport abnormality such as a jam in the paper sheet processing apparatus 1. It has become.

  Further, the sheet processing apparatus 1 is provided with a display panel 38 as a display unit and an operation panel 39 as an operation unit in the vicinity of the input unit 35. The display panel 38 displays operation guidance for the operator or processing status. The operation panel 39 is for an operator to give an operation instruction.

  The control unit 11 is connected to a drive mechanism (not shown) of each unit such as the conveyance path 36, the gate G, the take-out unit 35a, the stacking devices A1, A2, B1, B2, or the cutting processing unit SD, and controls the operation of each unit. It is like that. Further, the detection sensor, the display panel 38, the operation panel 39, and the like are also connected to the control unit 11 and controlled.

FIG. 2 is a block diagram showing functions of the inspection unit 37 shown in FIG.
The inspection unit 37 includes an optical detection unit 37a and a security detection unit 37b. The optical detection unit 37a and the security detection unit 37b are connected to the control unit 11 via a bus or the like. The control unit 11 is connected to a transfer control unit 12 and a gate control unit via a bus or the like.

  The conveyance control unit 12 moves the belt sandwiching the banknotes by rotating the rollers of the conveyance path 36 based on the control of the control unit 11. The gate control unit 13 selectively drives the conveyance direction of the bills conveyed on the conveyance path 36 by driving the plurality of gates G11, G21, G22, G51, G52, and G53 based on the control of the control unit 11. Switch to. The transfer control unit 12 and the gate control unit 13 constitute transfer means.

  The optical detection part 37a is provided adjacent to the conveyance path 36, and acquires the image of a banknote by imaging the banknote currently conveyed. The optical detection unit 37a includes a light source 14, an image acquisition unit 15, and the like. The light source 14 is an illumination device such as a halogen lamp, and projects light onto a predetermined area on the transport path 36a. The image acquisition unit 15 includes an optical system that receives the reflected light obtained by reflecting the light projected from the light source 14 by the banknote, and a CCD that includes a plurality of pixels that convert the received light into an electrical signal. Means. The image acquisition unit 15 is provided on both sides of the conveyance path 37a so as to capture both sides of the front and back of the banknote conveyed through the conveyance path 37a.

  The control unit 11 sequentially captures a predetermined area on the conveyance path 36a by the image acquisition unit 15, reads the banknote, and acquires an image. The control unit 11 performs predetermined image processing such as automatic gain control (AGC) correction and shading correction on the acquired image, and displays an image (paper sheet image) of a bill on the banknote conveyed by the conveyance path 36a. get.

  The security detection part 37b is provided adjacent to the conveyance path 36, and detects the security element of the banknote currently conveyed. The security detection unit 37b includes a plurality of light sources 14, filters 16, infrared image acquisition unit 17 (infrared image acquisition unit), magnetic detection unit 18 (magnetic detection unit), and metal detection unit 19 (metal detection unit). Security detection means.

  The filter 16 is a filter having a characteristic of transmitting infrared light and cutting visible light. The filter 16 is installed so as to transmit only the infrared light of the reflected light projected from the light source 14 and reflected by the banknote.

  The infrared image acquisition unit 17 includes a CCD having a plurality of pixels that convert infrared light transmitted through the filter 16 into an electrical signal. The infrared image acquisition unit 17 acquires the infrared image of the bill surface of the banknote conveyed by the conveyance path 36 a by sequentially imaging a predetermined area on the conveyance path 36 a and outputs the infrared image to the control unit 11. In the infrared image acquired by the infrared image acquisition unit 17, the area printed with the infrared absorbing ink is a dark spot.

  The magnetic detection part 18 can detect the magnetic thread | sled which a banknote has. The magnetic detection unit 18 includes, for example, a Magnet Resistance (MR) sensor including a magnetoresistive element. The magnetism detection unit 18 detects magnetism by approaching the bill to be conveyed, and outputs an electrical signal proportional to the magnetism intensity to the control unit 11 as a detection result of the magnetism detection. In addition, the magnetic detection part 18 outputs the electrical signal of the voltage value V1 proportional to the intensity | strength of magnetism as a detection result, for example.

  The metal detection part 19 can detect metals, such as a hologram which a banknote has. The metal detection unit 19 is configured by, for example, a detection coil and an LC oscillator. The metal detection unit 19 generates a magnetic field in the bill conveyance area using the detection coil, and uses the electrical signal proportional to the inductance value of the detection coil when the bill passes the magnetic field as the detection result of the metal detection. Output to. In addition, the metal detection part 19 outputs the electrical signal of the voltage value V2 proportional to the value of the inductance of a detection coil as a detection result, for example.

  The control unit 11 stores a ticket type dictionary 11a, a reference value memory 11b, a determination parameter memory 11c, and the like in a nonvolatile memory. The ticket type dictionary 11a is a storage unit that stores an image (reference paper sheet image) serving as a reference for a plurality of types of banknotes and information indicating the type of banknotes (ticket type) in association with each other.

  The control unit 11 compares the paper sheet image acquired by the optical detection unit 37a with the reference paper sheet images of a plurality of types of banknotes stored in the ticket type dictionary 11a, thereby reading by the optical detection unit 37a. Discriminating the type of bill. That is, in this case, the control unit 11 searches the ticket type dictionary 11a for an image that matches or approximates the paper sheet image acquired by the optical detection unit 37a, thereby determining the type of bill. Functions as a means.

  Moreover, the control part 11 selects the security detection means according to the bill type of the banknote discriminated from the some security detection means, and performs security detection by the selected security detection means. That is, in this case, the control unit 11 functions as a selection unit that selects a security detection unit, and a control unit that controls each unit so that a security element is detected by the selected security detection unit.

  The reference value memory 11b is a storage unit that stores a plurality of values (detection reference values) of each security element in various new series of true banknotes. That is, the reference value memory 11b stores a reference infrared image acquired from a true banknote, a magnetic detection detection result for a true banknote, a metal detection detection result for a true banknote, and the like.

  The reference value memory 11b stores, for example, an electrical signal of a reference voltage value V3, which is a detection result of magnetic detection for a true banknote, as a detection reference value for a magnetic detection result for a true banknote. In addition, the reference value memory 11b stores, for example, an electrical signal of a reference voltage value V4 that is a detection result of metal detection for a true banknote as a detection reference value of a metal detection result for a true banknote.

  The control part 11 determines the presence or absence of a security element based on the detection result of the security detection performed with respect to the banknote by the security detection part 37b, and the reference value memorize | stored in the reference value memory 11b. That is, the control unit 11 compares the infrared image acquired by the infrared image acquisition unit 17 of the security detection unit 37b with the reference infrared image stored in the reference value memory 11b, and prints using infrared absorbing ink. The presence or absence of is determined. Moreover, the control part 11 compares the detection result of the magnetic detection by the magnetic detection part 18 of the security detection part 37b, and the detection result of the magnetic detection with respect to the true banknote memorize | stored in the reference value memory 11b, Determine presence or absence. Moreover, the control part 11 compares the detection result of the metal detection by the metal detection part 19 of the security detection part 37b, and the detection result of the metal detection with respect to the true banknote memorize | stored in the reference value memory 11b, metal foil, That is, the presence or absence of a hologram is determined.

  The determination parameter memory 11c is information indicating the presence or absence of security elements in various banknotes. In the determination parameter memory 11c, information indicating the type of security element applied to the banknote and information indicating the type and series of the banknote are stored in association with each other. The control unit 11 compares the detection result by the security detection unit 37b with information indicating the type of security element applied to the banknote stored in the determination parameter memory 11c, and determines the type and series of the banknote. Functions as a means.

FIG. 3 is an explanatory diagram for explaining an example of banknotes processed by the paper sheet processing apparatus 1 according to the present embodiment.
FIG. 3A is a diagram showing an example of an old series of banknotes 100A having a face value of 100. FIG. 3B is a diagram showing an example of a new series of banknotes 100B having a face value of 100. As shown in FIG. 3B, the new series of banknotes 100B has a region 101 printed with infrared absorbing ink.

  FIG. 3C is an infrared image of the banknote 100A shown in FIG. FIG. 3D is an infrared image of the banknote 100B shown in FIG. As shown in FIG. 3D, a region 101 where the banknote 100B is printed with the infrared absorbing ink is a dark spot. As shown in FIGS. 3C and 3D, the paper sheet processing apparatus 1 can discriminate between new and old banknote 100 series based on the presence / absence of printing with infrared absorbing ink.

  FIG. 3E is a diagram showing an example of an old series of banknotes 500A having a face value of 500. FIG. 3F is a diagram illustrating an example of a new series of banknotes 500B having a face value of 500. As shown in FIG. 3F, the new series of banknotes 500B has a magnetic thread 501 printed with magnetic ink. As shown in FIGS. 3E and 3F, the paper sheet processing apparatus 1 can determine whether the series of banknotes 500 is new or old based on the presence or absence of the magnetic thread 501.

  FIG. 3G is a diagram illustrating an example of an old series of banknote 1000A having a face value of 1000. FIG. 3H is a diagram illustrating an example of a new series of banknotes 1000B having a face value of 1000. As shown in FIG. 3H, a new series of banknotes 1000B has an aluminum thread 1001 to which a hologram made of a metal foil such as aluminum is attached. As shown in FIGS. 3G and 3H, the paper sheet processing apparatus 1 can discriminate between new and old banknote 1000 series based on the presence or absence of the aluminum thread 1001.

FIG. 4 is a flowchart for explaining the processing of the paper sheet processing apparatus 1 when discriminating the type and series of banknotes. Assume that the banknotes to be inspected are banknotes in which two series of old and new are present on the three kinds of face values of the banknote 100, the banknote 500, and the banknote 1000 as shown in FIGS.
Before operating the paper sheet processing apparatus 1, the clerk puts a bundle in which a large number of plural types of banknotes are stacked into the feeding unit 35 shown in FIG. The control unit 11 of the paper sheet processing apparatus 1 causes the conveyance control unit 12 to individually take in the banknotes from the input unit 35 by the rollers of the takeout unit 35a shown in FIG. 1 and introduce the banknotes into the conveyance path 36a. Control.

  The control part 11 reads the banknote conveyed by the conveyance path 36a by the optical detection part 37a of the test | inspection unit 37, and acquires an image (step S11). In other words, the control unit 11 projects light on the banknote by the light source 14, receives the reflected light reflected by the banknote by the image acquisition unit 15, and converts it into an electrical signal. The control unit 11 corrects the image acquired by the optical detection unit 37a, and acquires an image (paper sheet image) of the bill face (step S12).

  The control unit 11 determines the type of the banknote being transported through the transport path 36a based on the acquired image of the banknote face and the reference paper image of a plurality of types of banknotes stored in the banknote type dictionary 11a. It discriminate | determines (step S13). That is, the control unit 11 searches the reference paper sheet images of a plurality of types of banknotes stored in the ticket type dictionary 11a for an image that matches or approximates the acquired banknote face image, and corresponds to the searched image. By referring to the information indicating the type of the attached banknote, it is determined whether the banknote being transported through the transport path 36 a is the banknote 100, the banknote 500, or the banknote 1000.

  When it is determined in step S13 that the banknote is the banknote 100, the control unit 11 acquires an infrared image of the banknote 100 by the infrared image acquisition unit 17 (step S21). That is, the control unit 11 projects light onto the banknote 100 by the light source 14, and extracts only infrared light from the reflected light reflected by the banknote 100 using the filter 16, thereby obtaining an infrared image. The unit 17 receives infrared light, and converts the received infrared light into an electrical signal.

  The control unit 11 acquires a reference infrared image stored in the reference value memory 11b (step S22). The control unit 11 compares the infrared image acquired by the infrared image acquisition unit 17 with the reference infrared image acquired from the reference value memory 11b, and determines the presence / absence of printing with infrared absorbing ink (step S23). . That is, the control unit 11 determines that there is printing with infrared absorbing ink when the infrared image and the reference infrared image match or approximate. In addition, when the infrared image and the reference infrared image do not match, the control unit 11 determines that there is no printing with the infrared ink.

  The control unit 11 refers to the determination parameter memory 11c and performs a series determination process for determining the series of the banknote 100 according to the presence / absence of printing using the infrared absorbing ink (step S24). That is, when it determines with the control part 11 having the printing by infrared absorption ink, it determines with the banknote 100 being a new series. Moreover, the control part 11 determines with the banknote 100 being an old series, when it determines with there being no printing by an infrared absorption ink.

  When it is determined in step S13 that the banknote is the banknote 500, the control unit 11 performs a magnetic detection process on the banknote 500 by the magnetic detection unit 18 (step S31). That is, the control unit 11 brings the magnetic detection unit 18 close to the conveyed banknote 500, detects the magnetic strength of the magnetic thread of the banknote 500 by the magnetoresistive effect element, and the voltage value corresponding to the detected magnetic strength. Get V1.

  The control part 11 acquires the reference voltage value V3 which is the detection result of the magnetic detection with respect to the true banknote memorize | stored in the reference value memory 11b (step S32). The control unit 11 compares the voltage value V1 acquired by the magnetic detection unit 18 with the reference voltage value V3 acquired from the reference value memory 11b, and determines the presence or absence of printing with magnetic ink (step S33). That is, the control unit 11 determines that there is printing with magnetic ink when the voltage value V1 and the reference voltage value V3 match or approximate. Further, when the voltage value V1 and the reference voltage value V3 do not match, the control unit 11 determines that there is no printing with magnetic ink.

  The control unit 11 refers to the determination parameter memory 11c and performs a series determination process for determining the series of the banknote 500 according to the presence or absence of printing with magnetic ink (step S34). That is, when it determines with the control part 11 having the printing by magnetic ink, it determines with the banknote 500 being a new series. Moreover, when it determines with the control part 11 not having printing by magnetic ink, it determines with the banknote 500 being an old series.

  When it is determined in step S13 that the banknote is the banknote 1000, the control unit 11 performs metal detection processing on the banknote 1000 by the metal detection unit 19 (step S41). That is, the control unit 11 generates a magnetic field in the conveyance area of the banknote 1000 using the detection coil, and acquires a voltage value V2 having a value corresponding to the inductance value of the detection coil when the banknote 1000 passes the magnetic field.

  The control part 11 acquires the reference voltage value V4 which is a detection result of the metal detection with respect to the true banknote memorize | stored in the reference value memory 11b (step S42). The controller 11 compares the voltage value V2 acquired by the metal detector 19 with the reference voltage value V4 acquired from the reference value memory 11b, and determines the presence or absence of a hologram (step S43). That is, the control unit 11 determines that the hologram is applied to the banknote when the voltage value V2 and the reference voltage value V4 match or approximate. Moreover, the control part 11 determines with the hologram not being given to the banknote, when the voltage value V2 and the reference voltage value V4 do not correspond.

  The control unit 11 refers to the determination parameter memory 11c and performs a series determination process for determining the banknote 1000 series according to the presence or absence of the hologram (step S44). That is, when it determines with the control part 11 having a hologram, it determines with the banknote 1000 being a new series. Moreover, when it determines with the control part 11 having no hologram, it determines with the banknote 1000 being an old series.

  In addition, the control part 11 controls each gate G so that the gate control part 13 may convey the banknote determined to be a new series to the accommodating part 43 corresponding to the kind. Moreover, the control part 11 controls each gate G so that the bank control part 13 may convey the banknote determined to be an old series to the cutting process part SD. That is, according to the above-described processing, it is possible to collect the old series of banknotes so as not to recirculate.

  As described above, according to one embodiment of the present invention, the inspection unit of the paper sheet processing apparatus determines the type of the paper sheet based on the image of the paper sheet, and according to the determined type of the paper sheet. Security is detected, and the series of the paper sheet is determined based on the presence or absence of a security element. Thereby, for example, a series of paper sheets that are very similar in design such as a series difference of the same face value can be discriminated. As a result, it is possible to provide a paper sheet processing apparatus and a paper sheet processing method that can determine the type and series of paper sheets.

  In addition, this invention is not limited to the said embodiment as it is, It can implement by changing a component in the range which does not deviate from the summary in an implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine the component covering different embodiment suitably.

  In the above-described embodiment, banknotes having three types as processing targets and each having two series are exemplified, but the processing target is not limited to this. Any banknote (paper sheet) can be discriminated as long as it can be discriminated by the image of the ticket and the security thread. In this case, the security detection unit of the paper sheet processing apparatus needs to include a security detection unit corresponding to the security element of the bill to be processed.

  Moreover, in above-mentioned embodiment, although the banknote which has one type of security element was mentioned as the example of a process, it is not limited to this. The bill to be processed may have a plurality of security elements. In this case, the paper sheet processing apparatus performs a plurality or one type of security detection processing on one bill as necessary.

FIG. 1 is a diagram schematically illustrating a configuration example of a sheet processing apparatus main body according to the present embodiment. FIG. 2 is a block diagram showing a part of the function of the inspection unit shown in FIG. FIG. 3 is an explanatory diagram for explaining an example of paper sheets processed by the paper sheet processing apparatus according to the present embodiment. FIG. 4 is a flowchart for explaining the operation of the sheet processing apparatus shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Paper sheet processing apparatus, 11 ... Control part, 11a ... Ticket type dictionary, 11b ... Reference value memory, 11c ... Determination parameter memory, 12 ... Conveyance control part, 13 ... Gate control part, 14 ... Light source, 15 ... Image Acquisition unit, 16 ... filter, 17 ... infrared image acquisition unit, 18 ... magnetic detection unit, 19 ... metal detection unit, 35 ... loading unit, 36 ... transport path, 37 ... inspection unit, 37a ... optical detection unit, 37b ... Security detection unit, 43... Storage unit, SD.

Claims (8)

First storage means for storing images of a plurality of types of paper sheets in advance;
A light source that projects on paper,
Image acquisition means for receiving reflected light reflected by the paper and converting it into an electrical signal to obtain a paper image;
A ticket type discriminating unit for discriminating the type of the paper sheet from the paper sheet image acquired by the image acquiring unit and the image of each type of paper sheet stored in the first storage unit; ,
Multiple types of security detection means for detecting different types of security elements,
A selection unit that selects a security detection unit from the plurality of types of security detection unit according to the type determined by the ticket type determination unit;
Control means for detecting a security element of the paper sheet by the security detection means selected by the selection means;
A paper sheet processing apparatus comprising:   The paper sheet processing apparatus according to claim 2, wherein the security detection unit includes an infrared image acquisition unit that acquires an infrared image of the paper sheet.   The paper sheet processing apparatus according to claim 2, wherein the security detection unit includes a metal detection unit that performs a metal detection process on the paper sheet.   The paper sheet processing apparatus according to claim 2, wherein the security detection unit includes a magnetic detection unit that performs a magnetic detection process on the paper sheet. Second storage means for storing in advance a plurality of detection reference values respectively corresponding to the security elements;
A series discriminating unit for discriminating a series of the paper sheets based on a detection result by the security detecting unit and a detection reference value stored by the second storage unit;
The paper sheet processing apparatus according to any one of claims 1 to 4, further comprising:   6. The paper sheet processing apparatus according to claim 1, further comprising a transport unit configured to transport paper sheets to the light source, the image acquisition unit, and the security detection unit. Pre-store each image of multiple types of paper sheets,
Flood the paper,
Receive reflected light reflected by the paper sheet and convert it into an electrical signal to obtain a paper sheet image;
Determining the type of the paper sheet from the acquired image of the paper sheet and each image of the paper sheet of each type stored in advance;
The detection of the security element corresponding to the determined type is selected from the detection of a plurality of different security elements,
Detecting the selected security element on the paper sheet;
Paper sheet processing method. A plurality of detection reference values respectively corresponding to the security elements are stored in advance,
The paper sheet processing method according to claim 7, wherein the paper sheet series is determined based on a detection result of the security detection and the stored detection reference value.

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