JP5156447B2 - Paper sheet identification device - Google Patents

Description

  The present invention relates to a paper sheet identification device, and in particular, determines the authenticity of a paper sheet having a surface whose hue and pattern change depending on an angle at which reflected light is received or an irradiation light is irradiated.

As a conventional paper sheet identification device, it was incorporated into a portable paper sheet identification device for easily identifying the authenticity of banknotes at retail stores and ATMs (Automated Tellers Machines) of financial institutions. A paper sheet identification device is known.
In these paper sheet identification devices, two light receiving elements are placed at different positions in order to determine the authenticity of a paper sheet having a hologram or color shift ink whose hue and pattern change depending on the angle at which the reflected light is received. As a structure to be provided, a structure is adopted in which reflected light of the same target point is simultaneously received by the two light receiving elements at different positions.
In addition, as a device for discriminating the authenticity of a paper sheet having a hologram or color shift ink whose hue and pattern change depending on the angle of irradiation light, two light emitting elements are provided at different positions. A structure is adopted in which reflected light of the same target point with respect to irradiation light from different positions is received by switching and irradiating the light emitting elements.
As a conventional technique, for example, a paper sheet identification device disclosed in Japanese Patent Application Laid-Open No. 2006-146321 (Patent Document 1) is known.

JP 2006-146321 A

However, in the paper sheet identification apparatus described in Patent Document 1, if a plurality of light receiving elements are arranged at different positions, or a plurality of light emitting elements are arranged at different positions, the customer of downsizing the paper sheet identification apparatus Can't meet the request.
It is an object of the present invention to provide a miniaturized paper sheet identification device capable of determining authenticity of a paper sheet having a surface whose hue and pattern change depending on an angle of irradiating light or receiving reflected light. It is to provide.

  A transport path for transporting the paper sheet, a position detector for detecting the position of the paper sheet transported on the transport path, a light emitting unit for irradiating the surface of the paper sheet transported on the transport path, and the transport path A light collecting unit that collects the reflected light from the surface of the paper sheet based on irradiation by the light emitting unit at different points in the conveyance path direction, a light receiving unit that reads the reflected light collected by the light collecting unit, and position information And a light receiving information representing a correspondence relationship between the light receiving data based on the reflected light read by the light receiving unit, a light receiving information reference data serving as a reference of the light receiving information, a light receiving information stored in the storage unit, A paper sheet discriminating apparatus comprising: an arithmetic unit that compares received light information reference data; and a control unit that controls each unit.

According to the present invention, a paper sheet having a surface whose hue and pattern change depending on an angle of irradiating irradiation light or an angle of receiving reflected light in a light receiving section provided in one place and a light emitting section provided in one place. Can be identified.

  In Examples 1 to 4 below, as an example of a paper sheet having a surface whose hue and pattern change depending on an angle of irradiating irradiation light or an angle of receiving reflected light, a paper sheet having color shift ink is used. explain.

  FIG. 1 shows a paper having a color shift ink in which hue and pattern change depending on an angle of irradiating irradiation light or an angle of receiving reflected light by a light emitting unit composed of one light emitting element and a light receiving unit composed of one light receiving element. It is the figure which showed the structure of the detection part of the paper sheet identification device which discriminates leaves. Hereinafter, a paper sheet identification apparatus including this detection unit will be described with reference to FIGS.

  The detection unit of the paper sheet identification apparatus shown in FIG. 1 includes a transport path 1 that transports the paper sheet 5, a light emitting element 2 that irradiates the paper sheet 5 transported on the transport path 1, and irradiation. The path of the reflected light of the paper sheet with respect to the light is changed, adjusted, and collected by a condenser 4 (for example, a prism, a mirror, etc.) that collects light and the path condensed by the condenser 4 is different. A light receiving element 3 for receiving the reflected lights 6 and 7 is provided.

  The light emitting element 2 simultaneously irradiates a range including both target points 1a and 1b which are positions on two conveyance paths that are different in the conveyance direction of the paper sheet. The condenser 4 condenses the reflected lights 6 and 7 from the target points 1 a and 1 b irradiated with the irradiation light by the light emitting element 2. The light receiving element 3 receives the light obtained by adding the reflected light from the two positions of the target point 1a and the target point 1b collected by the condenser 4. The paper sheet 5 moves on the conveyance path 1 in the direction of the arrow 18 from the target point 1a to the target point 1b, or vice versa, from the target point 1b to the target point 1a. In the following description, it is assumed that the movement is in the direction of the arrow 18.

  FIG. 2 is a circuit block diagram of the paper sheet identification apparatus including the detection unit shown in FIG. Hereinafter, each part will be described.

  The position detector 10 detects position information, which is the position of the paper sheet 5 conveyed on the conveyance path 1, by a sensor or the like not shown in FIG. The storage unit 11 stores and stores paper sheet position information detected by the position detector 10 and light reception data (light quantity) of reflected light received by the light receiving element 3. The storage unit 12 stores and stores the genuine paper sheet position information and light reception data acquired in advance as light reception information reference data. The calculation unit 8 compares the received light data and position information stored in the storage unit 11 with the received light information reference data stored in the storage unit 12 after the paper sheet passes through the target points 1a and 1b. To process. The control unit 9 controls these parts in order to identify the authenticity of the paper sheet.

  3 is stored in the storage unit 12 of FIG. 2 and is stored in the storage unit 11 and the authentic paper position information, the waveforms 13a to 13c representing the received light data, and used as the received light information reference data. The position information of the target paper sheets and the waveforms 14a to 14c representing the received light data are shown. Waveforms 14a to 14c show waveforms when a forged paper sheet is identified as a target of authenticity identification.

  First, waveforms 13a to 13c, which are examples of light reception information representing the relationship between the position information of genuine paper sheets stored in the storage unit 12 and the light reception data, will be described with reference to FIGS.

  The waveform 13a indicates the reflected light 6 from the sheet 5 received by the light receiving element 3 with respect to the position information (horizontal axis) detected by the position detector 10 when the sheet 5 passes the target point 1a. Is the received light data (vertical axis).

  The waveform 13b is based on the reflected light 7 of the paper sheet 5 received by the light receiving element 3 with respect to the position information (horizontal axis) detected by the position detector 10 when the paper sheet passes the target point 1b. Light reception data (vertical axis). The waveform 13b is a waveform delayed from the waveform 13a by the distance between the target point 1a and the target point 1b. Further, in the paper sheet (authentic paper sheet) having the color shift ink, the waveform 13a and the waveform 13b have different waveforms in the portions (13d and 13e) having the ink.

  However, the light receiving element 3 cannot read the reflected light from the target points 1a and 1b as individual waveforms like the waveform 13a and the waveform 13b. That is, the reflected light from the target points 1a and 1b is collected by the condenser 4 and is received by the light receiving element 3 as a waveform obtained by adding the waveform 13a and the waveform 13b as in the waveform 13c.

  The waveform 13c (position information and received light data) of the genuine paper sheet obtained in this way is stored in advance in the storage unit 12 as received light information reference data.

  Next, the waveforms 14a to 14c, which are light reception information representing the relationship between the positional information of the paper sheets to be authenticity identified and the light reception data, will be described. The light reception information of the paper sheet that is the object of authenticity identification is stored in the storage unit 11. In addition, the waveforms 14a-14c of a present Example represent the waveform of the forged paper sheet.

  The waveform 14a is received light based on reflected light from the paper sheet received by the light receiving element 3 with respect to the position information (horizontal axis) detected by the position detector 10 when the paper sheet passes the target point 1a. Data (vertical axis).

  The waveform 14b is received light based on reflected light from the paper sheet received by the light receiving element 3 with respect to the position information (horizontal axis) detected by the position detector 10 when the paper sheet passes through the target point 1b. Data (vertical axis).

  The waveform 14a and the waveform 14b are forged paper sheets that do not have color shift ink. Unlike the genuine paper sheets 13a and 13b, the waveforms 14a and 14b are based on the reflected light 6 of the target point 1a. There is no difference between the light reception data and the light reception data based on the reflected light 7 of the target point 1b due to the portions (14d and 14e) having the color shift ink.

  However, as described above, the reflected light from the target points 1a and 1b is collected by the condenser 4, and as the waveform 14c, the light receiving element 3 forms a waveform obtained by adding the waveform 14a and the waveform 14b. Received light.

  The waveform 14c (position information and light reception data) of the forged paper sheet read in this way is stored in the storage unit 11.

  The waveform 15 is stored in the storage unit 12 and the waveform 14c stored in the storage unit 11 by the arithmetic unit 8 after the paper sheet transported on the transport path 1 passes through the target point 1a and the target point 1b. The result of the comparison calculation with the received light information reference data (waveform 13c) is shown. In the present embodiment, a method for calculating the difference between the waveform 13c and the waveform 14c is used as a comparison calculation method.

  In the case of the waveform 15, a waveform (peak) 15a is generated in the portion having the color shift ink. For this reason, the calculation unit 8 does not generate a peak in the portion where the paper sheet that is the object of authenticity identification has the color shift ink, that is, the forged paper sheet that does not use the color shift ink. Judged to be similar.

  Note that the arithmetic unit 8 determines that the sheet is a genuine sheet when a waveform (peak) is not generated in the portion having the color shift ink.

  In this embodiment, a paper sheet having a color shift ink whose hue and pattern are changed by one light emitting element, one light receiving element, and one condenser 4 depending on an angle of irradiating irradiation light or an angle of receiving reflected light. A paper sheet discriminating apparatus for discriminating types has been described. By using the embodiment, it is possible to provide a paper sheet identification device that can be miniaturized at low cost.

FIG. 4 shows a detection unit of a paper sheet identification device that discriminates a paper sheet having color shift ink by a light emitting unit composed of a plurality of (two in this embodiment) light emitting elements and a light receiving unit composed of one light receiving element. FIG. Hereinafter, the paper sheet identification apparatus including this detection unit will be described with reference to FIGS.
In the following, description will be made centering on parts that operate differently from the first embodiment.

  The detection unit of the paper sheet identification apparatus shown in FIG. 4 includes two light emitting elements that separately irradiate irradiation light onto the transport path 1 that transports the paper sheet 5 and the paper sheet 5 transported on the transport path 1. 2a, 2b, a condenser 4 (for example, a prism, a mirror, etc.) that is a condenser for changing and adjusting the path of reflected light 6 and 7 of the paper sheet with respect to the irradiation light, and a condenser, And a light receiving element 3 that receives reflected lights 6 and 7 having different paths condensed by 4.

  The light emitting element 2a irradiates the range including the target point 1a but not including the target point 1b, and the light emitting element 2b irradiates the range including 1b but not including the target point 1a. The light emitting element 2a alternately irradiates the target point 1a and the light emitting element 2b alternately irradiates the target point 2b in a time division manner. The condenser 4 separately collects the reflected light 6 from the target point 1a based on the irradiation light of the light emitting element 2a and the reflected light 7 from the target point 1b based on the irradiation light of the light emitting element 2b. The light receiving element 3 separately receives the reflected light 6 based on the irradiation light of the light emitting element 2a collected by the condenser 4 and the reflected light 7 based on the irradiation light of the light emitting element 2b.

  That is, in Example 1, the reflected lights 6 and 7 from the target points 1a and 1b with respect to the irradiation light emitted from the light emitting element 2 are received by the light receiving element 3 as the added light reception data. The reflected lights 6 and 7 from the target points 1a and 1b irradiated with the irradiation light alternately by the light emitting elements 2a and 2b are alternately condensed and received in a time division manner, and are separated and stored as received light data. Stored in the sections 11a and 11b.

  FIG. 5 is a circuit block diagram of the paper sheet identification apparatus including the detection unit shown in FIG. Hereinafter, each part will be described.

  The light emitting element 2 a and the light emitting element 2 b irradiate the target point 1 a and the target point 1 b alternately by time division as controlled by the control unit 9. The light receiving element 3 is controlled by the control unit 9 to separately read the reflected light 6 of the target point 1a based on the irradiation light of the light emitting element 2a and the reflected light 7 of the target point 1b based on the irradiation light of the light emitting element 2b. Then, the reflected light is read in accordance with the irradiation period of the light emitting elements 2a and 2b. The light receiving element 3 reads the reflected lights 6 and 7 at a reading cycle that is a half of the reading cycle of the reflected light in the first embodiment. The received light data of the reflected light read by the light receiving element 3 is stored in the storage units 11 a and 11 b together with the position information of the paper sheets detected by the position detector 10. Specifically, the control unit 9 stores the received light data when the light emitting element 2a is irradiated with the target point 1a in the storage unit 11a together with the position information, and the light emitting element 2b is irradiated with the target point 1b. Is stored in the storage unit 11b together with the position information.

  After the paper sheet conveyed on the conveyance path 1 passes through the target point 1a and the target point 1b, the calculation unit 8 receives the light reception data and position information stored in the storage unit 11a and the light reception stored in the storage unit 11b. Data and position information are subjected to a comparison calculation process, and a portion having color shift ink is extracted.

  FIG. 6 shows the genuine paper sheet position information stored in the storage units 11a and 11b in FIG. 4, the waveforms 16a to 16b representing the received light data, the waveform 16c that is the comparison calculation result, and the storage units 11a and 11b. The position information of the stored and forged paper sheets, the waveforms 17a to 17b representing the received light data, and the waveform 17c which is the comparison calculation result are shown.

  First, waveforms 16a to 16c, which are examples of received light information representing the relationship between the position information of genuine paper sheets and received light data, will be described.

  The waveform 16a shows the reflected light from the paper sheet received by the light receiving element 3 with respect to the position information (horizontal axis) detected by the position detector 10 when the genuine paper sheet passes through the target point 1a. Based on the received light data (vertical axis).

  The waveform 16b is a light reception based on the reflected light from the paper sheet received by the light receiving element 3 with respect to the position information (horizontal axis) detected by the position detector 10 when the paper sheet passes the target point 1b. Data (vertical axis). The waveform 16b is a waveform delayed from the waveform 16a by the distance between the target point 1a and the target point 1b. Further, in the paper sheet (authentic paper sheet) having the color shift ink, the waveform 16a and the waveform 16b have different waveforms in the portion (16d) having the ink.

  Here, as described above, the light emitting element 2a alternately irradiates the target point 1a and the light emitting element 2b alternately irradiates the target point 1b in a time division manner. The waveform 16a and the waveform 16b are a reflected light 6 from the target point 1a with respect to the irradiation light irradiated on the light emitting element 2a and a reflected light 7 from the target point 1b with respect to the irradiation light irradiated with the light emitting element 2b. It is a waveform read alternately by the light receiving element 3 in a time division manner in accordance with the light emission periods 2a and 2b.

  The waveform 16a is stored in the storage unit 11a, and the waveform 16b is stored in the storage unit 11b. The waveform 16b stored in the storage unit 11b is a waveform delayed from the waveform 16a stored in the storage unit 11a by the distance between the target point 1a and the target point 1b.

  After the paper sheet transported on the transport path 1 passes through the target point 1a and the target point 1b, the calculation unit 8 determines either the waveform 16a or the waveform 16b by the distance between the target point 1a and the target point 1b. The waveform 16a and the waveform 16b are shifted in a matching direction, the two waveforms are compared, and the peak (16e) of the portion having the color shift ink is extracted.

  When the peak 16e exceeds a certain threshold value, the calculation unit 8 determines that the sheet is genuine paper having color shift ink.

  Next, the waveforms 17a to 17c relating to the position information and light reception data of the forged paper sheets will be described.

  The waveform 17a shows the reflected light from the paper sheet received by the light receiving element 3 with respect to the position information (horizontal axis) detected by the position detector 10 when the forged paper sheet passes through the target point 1a. Is the received light data (vertical axis).

  The waveform 17b is received light based on the reflected light from the paper sheet received by the light receiving element 3 with respect to the position information (horizontal axis) detected by the position detector 10 when the paper sheet passes the target point 1b. Data (vertical axis). The waveform 16b is a waveform delayed from the waveform 17a by the distance between the target point 1a and the target point 1b.

  A waveform 17a and a waveform 17b are waveforms of forged paper sheets that do not have color shift ink. For this reason, in the waveform 17a and the waveform 17b, unlike the waveform 16a and the waveform 16b of the genuine paper sheet, there is no difference due to the portion (17d) having the color shift ink.

  Here, as described above, the light emitting element 2a alternately irradiates the target point 1a and the light emitting element 2b alternately irradiates the target point 1b in a time division manner. The waveform 17a and the waveform 17b are the reflected light 6 from the target point 1a based on the irradiation light of the light emitting element 2a and the reflected light 7 from the target point 1b based on the irradiation light of the light emitting element 2b. The waveform is read alternately by the light receiving element 3 in a time division manner according to the light emission period. The waveform 17a is stored in the storage unit 11a, and the waveform 17b is stored in the storage unit 11b. The waveform 17b stored in the storage unit 11b is delayed from the waveform 17a stored in the storage unit 11a by the distance between the target point 1a and the target point 1b.

  After the paper sheet transported on the transport path 1 passes through the target point 1a and the target point 1b, the calculation unit 8 determines either the waveform 17a or the waveform 17b by the distance between the target point 1a and the target point 1b. The waveform 17a and the waveform 17b are shifted in a matching direction, and the two waveforms are compared and calculated. Here, since the waveform 17a and the waveform 17b are forged paper sheets, the waveform (peak) 17e is not extracted in the portion having the color shift ink.

  When the peak 17e does not exceed a certain threshold value, the calculation unit 8 determines that the sheet is forged paper that does not have color shift ink.

  In the present embodiment, the paper sheet identification apparatus that discriminates paper sheets having color shift ink by using a plurality of light emitting elements and one light receiving element installed at the same position has been described. By using this embodiment, it is possible to perform a wide variety of light emission control according to the posture and mode of the paper sheet, and it is possible to discriminate more types of paper sheets, and it is possible to reduce the size of the paper sheet identification device Can be provided.

  FIG. 7 shows a paper sheet identification in which a paper sheet having color shift ink is discriminated by a light emitting section composed of one light emitting element and a light receiving section composed of a light receiving element having a plurality of (two in this embodiment) light receiving surfaces. It is the figure which showed the structure of the detection part of an apparatus. Hereinafter, a paper sheet identification apparatus including this detection unit will be described with reference to FIGS. In the following, description will be made centering on parts that operate differently from the first embodiment.

  The detection unit of the paper sheet identification apparatus shown in FIG. 7 includes a transport path 1 that transports the paper sheet 5, a light emitting element 2 that irradiates the paper sheet 5 transported on the transport path 1, and an irradiation device. The path of the reflected light of the paper sheet with respect to the light is changed, adjusted, and collected by a condenser 4 (for example, a prism, a mirror, etc.) that collects light and the path condensed by the condenser 4 is different. A light receiving element 3 having light receiving surfaces 3a and 3b for separately receiving the reflected lights 6 and 7 is provided.

  The light emitting element 2 simultaneously irradiates both two target points 1a and 1b that are different in the paper sheet conveyance direction. The condenser 4 guides the reflected light 6 from the target point 1a based on the irradiation light of the light emitting element 2 to the light receiving surface 3a, and guides the reflected light 7 from the target point 1b to the light receiving surface 3b. The light receiving surfaces 3a and 3b of the light receiving element 3 receive the reflected light 6 and the reflected light 7 collected by the condenser 4 as independent received light data.

  That is, in this embodiment, the reflected lights 6 and 7 from the target points 1a and 1b irradiated with the light emitted from the light emitting element 2 are collected by the condenser 4 and then received by the light receiving surfaces 3a and 3b. Light is alternately received in a time division manner, and is separately separated and stored in the storage units 11a and 11b as light reception data.

  FIG. 8 is a circuit block diagram of the paper sheet identification apparatus including the detection unit shown in FIG. Hereinafter, each part will be described.

  The two light receiving surfaces 3a and 3b of the light receiving element 3 implement the reflected light 6 from the target point 1a and the reflected light 7 from the target point 1b based on the irradiation light of the light emitting element 2 under the control of the control unit 9. The light is alternately received by a time-division method at a half cycle of the reflected light reading cycle in Example 1. The light receiving elements 3 alternately read the reflected lights 6 and 7 received by the respective light receiving surfaces.

  The received light data of the reflected light 6 received by the light receiving surface 3a of the light receiving element 3 and the position information detected by the position detector 10 are stored in the storage unit 11a and received by the reflected light 7 received by the light receiving surface 3b. The data and the position information detected by the position detector 10 are stored in the storage unit 11b.

  Since the method of identifying authenticity of the paper sheet after the received light data and the position information are stored in the storage units 11a and 11b is the same as that in the second embodiment, it will be briefly described below.

  After the paper sheet transported on the transport path 1 passes through the target point 1a and the target point 1b, the calculation unit 8 matches the waveform stored in the storage unit 11a with the waveform stored in the storage unit 11b. And comparing the two waveforms. In the case of forged paper sheets, the waveform (peak) is not extracted in the portion having the color shift ink, but in the case of genuine paper sheets, the waveform (peak) is extracted in the portion having the color shift ink. .

  The computing unit 8 determines whether the paper sheet is a genuine paper sheet or a counterfeit paper sheet depending on whether or not the peak 17e exceeds a certain threshold value.

  In the present embodiment, the paper sheet identification device that discriminates the paper sheet having the color shift ink by the light receiving element having one light emitting element and a plurality of light receiving surfaces has been described. By utilizing this embodiment, it is possible to provide a paper sheet identification device capable of miniaturization and capable of discriminating more types of paper sheets without increasing the number of light receiving elements.

  FIG. 9 shows a light emitting unit 19 including a plurality of light emitting elements 2, light receiving elements 3, and light collectors 4 according to the first embodiment, which are horizontally provided in a direction perpendicular to the conveying direction of paper sheets on the conveying path 1. FIG. 3 is a perspective view showing an embodiment including a unit 20 and a light collecting unit 21. The lengths of the light emitting unit 19, the light receiving unit 20, and the light collecting unit 21 are substantially the same as the width in the direction perpendicular to the transport direction of the paper sheet transported on the transport path 1.

  The light emitting unit 19 simultaneously irradiates both two target lines 1a and 1b that are different in the paper sheet conveyance direction, and the light collecting unit 21 starts from the target lines 1a and 1b irradiated with the irradiation light by the light emitting unit 19. The light receiving unit 20 receives the light obtained by adding the reflected light from both positions of the target line 1a and the target line 1b collected by the light collecting unit 21. Other configurations and paper sheet authenticity determination methods are the same as those in the first embodiment.

  Although the present embodiment has been described based on the first embodiment, the second and third embodiments can be implemented in the same manner.

  By using this embodiment, paper that can be used even when the color shift ink is widely used in the direction perpendicular to the transport direction of the paper sheet or when it is used over the entire surface of the paper sheet. A leaf identification device can be provided.

  In Examples 1 to 4 described above, the color shift ink used for paper sheets has been described as a specific example as an example of the surface where the hue and pattern change depending on the angle at which the irradiated light is irradiated or the angle at which the reflected light is received. However, the present invention is not limited to this.

  Moreover, although the memory | storage parts 11, 12, 11a, and 11b were demonstrated as a different memory | storage device, the structure which has a some memory | storage area in one memory | storage device may be sufficient.

  In addition, the paper sheets are transported on the transport path 1, but the transport in this case is not only performed when the paper sheets are automatically transported, but the paper sheets are manually slid and the detection unit is moved. The form which passes is also included.

  As described above, according to the present invention, the angle or reflected light for irradiating the irradiation light is reflected by the light emitting element disposed at one position with respect to the transport direction and the light receiving element disposed at one position with respect to the transport direction. The present invention is not limited to the first to fourth embodiments as long as it is possible to identify paper sheets having a surface whose hue and pattern change depending on the angle of receiving light.

Configuration of a detection unit of a paper sheet identification device (Example 1) Circuit block diagram of Embodiment 1 Light reception data and comparison calculation processing of the first embodiment. Configuration diagram of detection unit of paper sheet identification device (Example 2) Circuit block diagram of embodiment 2 The received light data and the comparison calculation process of the second embodiment. Configuration diagram of detection unit of paper sheet identification device (Example 3) Circuit block diagram of embodiment 3 Configuration diagram of detection unit of paper sheet identification device (Example 4)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Conveyance path, 1a, 1b ... Target point 2, 2a, 2b ... Light emitting element, 3 ... Light receiving element, 3a, 3b ... Light receiving surface in light receiving element, 4 ... Condenser, 5 ... Paper sheet, 6 ... reflected light from 1a, 7 ... reflected light from 1b, 8 ... calculation unit 9 ... control unit 10 ... position detector, 11, 11a, 11b, 12 ... storage unit, 13a, 13b ... waveform for explaining received light data , 13c ... Waveform of received light data, 14a, 14b ... Waveform for explaining received light data, 14c ... Waveform of received light data, 15 ... Result of comparison calculation processing, 16a, 16b ... Received data (authentic paper sheet), 16c ... Results of comparison calculation processing (authentic paper sheets), 17a, 17b... Received light data (forged paper sheets), 17c... Results of comparison calculation processing (forged paper sheets), 18. Transport direction, 19... Light emitting portion substantially the same as the width of the paper sheet, 20. Receiving unit width is substantially the same in length, the condenser portion is substantially the same width length of 21 ... sheet

Claims (4)

A transport path for transporting paper sheets;
A position detection unit for detecting the position of the paper sheet conveyed on the conveyance path;
One light emitting unit that irradiates a predetermined point different in the transport direction on the surface of the paper sheet transported on the transport path;
A light collecting unit that collects reflected light from the surface of the paper sheet based on irradiation by the light emitting unit at the different predetermined points ;
One light receiving unit that is collected by the light collecting unit and reads the reflected light of the different predetermined points, and
Light reception information indicating the correspondence between the positional information of the paper sheet detected by the position detection unit and the light reception data read by the light reception unit,
A light receiving information reference data serving as a reference for the light receiving information;
A calculation unit that compares the received light information stored in the storage unit with the received light information reference data;
Paper sheet recognition apparatus characterized by comprising a control unit for controlling the respective units. The paper sheet identification apparatus according to claim 1,
Each of the light emitting unit, the light collecting unit, and the light receiving unit is disposed at one point with respect to the conveyance direction of the conveyance path. The paper sheet identification device according to claim 1 or 2,
The light emitting unit includes at least a first light emitting element and a second light emitting element,
The different predetermined points include at least a first point and a second point,
The first light emitting element irradiates a range including the first point and not including the second point,
The paper sheet identification apparatus, wherein the second light emitting element irradiates a range that does not include the first point and includes the second point. The paper sheet identification device according to claim 1 or 2,
The light receiving portion has at least two independent light receiving surfaces;
In the light collecting unit and the light receiving unit, the light receiving surface of the light receiving unit receives at least the reflected light from the first point and the reflected light from the second point among the different points by different light receiving surfaces. A paper sheet identification device, characterized in that it is disposed in

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