WO2018150958A1 - Dispositif de détection de transit de support et dispositifs de détection de transit de support appariés - Google Patents

Dispositif de détection de transit de support et dispositifs de détection de transit de support appariés Download PDF

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Publication number
WO2018150958A1
WO2018150958A1 PCT/JP2018/004053 JP2018004053W WO2018150958A1 WO 2018150958 A1 WO2018150958 A1 WO 2018150958A1 JP 2018004053 W JP2018004053 W JP 2018004053W WO 2018150958 A1 WO2018150958 A1 WO 2018150958A1
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WO
WIPO (PCT)
Prior art keywords
light
medium
paper sheet
conveyance path
passage detection
Prior art date
Application number
PCT/JP2018/004053
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English (en)
Japanese (ja)
Inventor
雅俊 村川
好広 杉原
Original Assignee
グローリー株式会社
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Filing date
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Publication of WO2018150958A1 publication Critical patent/WO2018150958A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/14—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors by photoelectric feelers or detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
    • G01V8/14—Detecting, e.g. by using light barriers using one transmitter and one receiver using reflectors
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D9/00—Counting coins; Handling of coins not provided for in the other groups of this subclass

Definitions

  • the present invention relates to a medium passage detection device and a pair of medium passage detection devices. More specifically, a medium passage detection device suitable for optically detecting passage of a transparent medium, in particular, a medium such as a bill provided with a transparent portion such as a clear window and a specular reflection portion such as a hologram, and a pair of The present invention relates to a medium passage detection device.
  • the medium passage detection device is a device that detects a medium conveyed in an apparatus such as a medium processing apparatus, and normally, a transmission type optical sensor is used.
  • Examples of the medium to be conveyed include paper sheets such as banknotes (banknotes), gift certificates, and checks.
  • the paper used for paper sheets such as banknotes is mainly made of vegetable fiber, but for the purpose of improving durability, water resistance, security, etc., paper made of synthetic fiber is used or synthesized.
  • a polymer sheet, which is a resin sheet, may be used.
  • Banknotes made from polymer sheets are called polymer banknotes.
  • Various security features may be imparted to the paper sheets, and for example, a clear window (transparent window) may be provided on the polymer bill to prevent forgery.
  • the traveling path of a light transmissive film is set obliquely with respect to the optical path from a light projecting element to a light receiving element
  • a detection device is disclosed in which the light transmittance of the light transmissive film is apparently decreased and the detection capability of the light transmissive film is improved by increasing the reflectance of the light transmissive film to reduce transmitted light.
  • Patent Document 2 As a technique for detecting the position and outer shape of a medium using an optical sensor, for example, in Patent Document 2, a light emitting element and a light receiving element are incorporated in one sealed case, and a reflector is arranged facing the sealed case. Accordingly, an optical sensor device is disclosed in which paper sheets can be detected at a plurality of locations on the conveyance path and the wiring structure is simplified.
  • a method of improving the detection capability of a medium provided with a transparent portion such as a clear window a method of providing a plurality of points on the conveyance path for detecting the passage of the medium (hereinafter also referred to as a medium detection position) can be considered.
  • a medium detection position a method of providing a plurality of points on the conveyance path for detecting the passage of the medium.
  • one pair of a light projecting element and a light receiving element is required for each medium detection position. Therefore, when providing a plurality of medium detection positions on the conveyance path using the detection apparatus disclosed in Patent Document 1, it is necessary to arrange the pair for each medium detection position, and the space occupied by the detection apparatus increases. .
  • a light emitting unit and a light receiving unit are arranged on one side of the conveyance path, and a reflection unit is provided on the other side of the conveyance path, thereby conveying by a set of light emitting unit and light receiving unit.
  • the light receiving part may receive the reflected light from the specular reflection part, and erroneously determine that the part where the specular reflection part is formed is without the medium There is a problem that a medium having a specular reflection portion cannot be detected.
  • the present invention has been made in view of the above-described situation, and can detect a medium having a transparent portion at a plurality of locations on a conveyance path by a pair of a light emitting portion and a light receiving portion, and a reflecting surface.
  • An object of the present invention is to provide a medium passage detection device and a pair of medium passage detection devices capable of detecting a medium having the medium.
  • the present invention is a medium passage detection device that optically detects the passage of a medium transported in a transport path, and is disposed on one side of the transport path, and an optical axis is transported in the transport path
  • a light emitting unit that emits light toward the conveyance path so as to form an angle of 60 ° or more and less than 90 ° with a direction orthogonal to the path, and a predetermined distance from the conveyance path on the other side of the conveyance path
  • a reflection part that reflects light emitted from the light emitting part, and a light that is arranged on the one side of the conveyance path and reflected by the reflection part.
  • a light receiving portion for receiving light.
  • this invention is characterized by further providing the 1st light guide provided between the said conveyance path and the said reflection part in the said invention.
  • the present invention is characterized in that, in the above invention, the light reflected by the reflecting portion is incident on the transport path from the first light guide at an incident angle less than a critical angle.
  • the present invention is characterized in that, in the above-mentioned invention, the light receiving section is arranged at a position spaced apart from the transport path by a predetermined distance.
  • the second light guide and the third light guide provided between the transport path and the light emitting unit and between the transport path and the light receiving unit, respectively.
  • a light body is further provided.
  • the present invention is characterized in that, in the above invention, the light emitted from the light emitting unit is incident on the transport path from the second light guide at an incident angle less than a critical angle.
  • the present invention is characterized in that, in the above-mentioned invention, the light emitting section emits infrared light.
  • the present invention is a pair of medium passage detection devices including two of the medium passage detection devices, wherein two reflection portions of the two medium passage detection devices are located on the opposite sides of the conveyance path,
  • the two medium passage detection devices are configured such that one detects the passage of the medium at two medium detection positions and the other detects the passage of the medium at the same two positions as the two medium detection positions. , Arranged.
  • the medium passage detection device and the pair of medium passage detection devices of the present invention it is possible to detect a medium having a transparent portion at a plurality of locations on the conveyance path by a pair of light emitting portion and light receiving portion, and It is possible to detect a medium having a reflective surface.
  • FIG. 3 is a schematic plan view illustrating a suitable example of a paper sheet having a transparent portion, which is detected by the paper sheet passage detection device according to the first embodiment. It is the schematic diagram which looked at the paper sheet passage detection device concerning Embodiment 1 from the conveyance direction of paper sheets. It is the schematic diagram which looked at the paper sheet passage detection device concerning Embodiment 1 from the conveyance direction of paper sheets, and represents the state where paper sheets are conveyed in the center of a conveyance way. It is the schematic diagram which looked at the paper sheet passage detection device concerning Embodiment 1 from the side.
  • FIG. 9 is a schematic view of a pair of paper sheet passage detection devices according to the second embodiment when viewed from the paper sheet conveyance direction, and shows a state in which a folded paper sheet is conveyed through a conveyance path. It is the schematic diagram which expanded the part enclosed with the circle in FIG. It is the schematic diagram which looked at a pair of paper sheet passage detection device concerning Embodiment 3 from the upper part. It is the schematic diagram which looked at the paper sheet passage detection device concerning modification 4 from the conveyance direction of paper sheets.
  • This embodiment is a paper sheet passage detection device used for detecting passage of paper sheets.
  • the paper sheet passage detection device according to the present embodiment is mounted on the paper sheet processing device and is used to detect the passage of the paper sheet transported in the short direction along the transport path in the paper sheet processing device. Is done.
  • the type of paper sheet to be detected by the paper sheet passage detection device is not particularly limited, and examples thereof include banknotes, gift certificates, checks, securities, and card-like media.
  • Paper used for banknotes is mainly paper made from plant fiber, but paper made from synthetic fibers or synthetic resin sheets for the purpose of improving durability, water resistance, security, etc. A polymer sheet may be used. Banknotes made from polymer sheets are called polymer banknotes.
  • the paper sheet to be detected may be composed only of an opaque portion that blocks light, but a transparent portion that transmits at least visible light (visible light) and / or infrared light. What is included in at least a part is suitable, and the paper sheet to be detected is preferably formed from a polymer sheet. Further, the paper sheet to be detected may be a paper sheet (hybrid paper sheet) in which the transparent portion is formed from a polymer sheet and the opaque portion is formed from paper made of plant fiber or synthetic fiber. Moreover, it is preferable that the paper sheet to be detected has a reflection surface and a mirror reflection portion such as a rainbow hologram is partially formed.
  • clear windows 2a and 2b are formed in the lower left part and the right part of the paper sheet (medium) 1 as transparent parts 2 that transmit visible light and infrared light, respectively.
  • the clear window 2a is provided in an island shape and is surrounded by an opaque portion 3 where light is shielded.
  • the clear window 2b is provided in a strip shape and corresponds to the short direction (in the present embodiment, corresponding to the transport direction). In this case, the paper sheet 1 is provided from one end to the other end.
  • the paper sheet passage detection device (medium passage detection device) 10 is a light emitting unit 20 disposed below the conveyance path 11 through which the paper sheet 1 passes. And the light receiving unit 30 and the reflecting unit 40 disposed on the upper side of the conveyance path 11.
  • the paper sheet passage detection device 10 further includes a first light guide 50 disposed between the transport path 11 and the reflection unit 40, and a second guide disposed between the transport path 11 and the light emitting unit 20.
  • An optical body 60 and a third light guide 70 disposed between the conveyance path 11 and the light receiving unit 30 are provided.
  • the conveyance path 11 is a gap between a pair of conveyance guides 12 arranged in parallel to each other, and the height H of the conveyance path 11, that is, the distance between the pair of conveyance guides 12 may be 4 mm, for example. it can.
  • the paper sheet 1 is conveyed through the paper sheet processing apparatus from the front of the paper to the back of the paper or from the back of the paper to the front of the paper.
  • a plurality of rollers 80 shown in FIG. 4 are provided in the paper sheet processing apparatus so that the paper sheet 1 can move in the transport path 11, and the rollers 80 are driven by a driving device (not shown) such as a motor. .
  • Each roller 80 is rotationally driven by the driving device, so that the paper sheet 1 is transported in the transport path 11 in the positive X-axis direction (in FIG. 4, from the right side to the left side of the paper sheet passage detection device 10).
  • the paper sheet passage detection device 10 is passed through the point.
  • the paper sheet 1 may be transported in the transport path 11 in the negative X-axis direction (from the left side to the right side of the paper sheet passage detection device 10 in FIG. 4).
  • the light emitting unit 20 irradiates the paper 1 with light.
  • the light emitting unit 20 is disposed below the transport path 11 as shown in FIGS.
  • the light emitted from the light emitting unit 20 obliquely crosses the transport path 11 and travels toward the reflecting unit 40.
  • the light emitting unit 20 houses and protects a light emitting element 21 composed of a light emitting diode (LED) and the like, a substrate (not shown) on which the light emitting element 21 is mounted, and these.
  • a terminal portion 23 provided at one end of the housing 22.
  • the housing 22 has a protective member 24 that is disposed so as to face the light emitting surface of the light emitting element 21 (transmits light emitted from the light emitting element 21).
  • Emitting unit 20 the direction L10 of the optical axis L1 is perpendicular to the conveying path 11 and 60 ° or more in the conveying path 11, emits light toward the transportation path 11 so as to form an angle theta 1 is less than 90 °.
  • the kind (wavelength) of the light which the light emission part 20 emits is not specifically limited, It is preferable that the light emission part 20 irradiates infrared light. By setting it as such an aspect, since attenuation of the light by the influence of dust can be suppressed, it becomes possible to detect the paper sheet 1 more reliably. Moreover, since the infrared light source is inexpensive, the manufacturing cost of the paper sheet passage detection device 10 can be reduced.
  • the reflection unit 40 reflects the light emitted from the light emitting unit 20.
  • the reflection unit 40 is arranged on the upper side of the conveyance path 11, and is arranged in parallel to the conveyance path 11 at a position separated from the conveyance path 11 by a predetermined distance.
  • the reflection unit 40 is arranged in parallel with the conveyance path 11.
  • the reflection surface on which the light emitted from the light emitting unit 20 is reflected is arranged in parallel with the conveyance path 11. This means that the entire reflection unit 40 may or may not be arranged in parallel with the transport path 11.
  • the surface other than the reflection surface on which the light emitted from the light emitting unit 20 is reflected may not be parallel to the transport path 11.
  • the term “parallel” includes not only perfect parallelism but also substantially parallelism within the range where the effects of the present invention are achieved.
  • the light reflected by the reflecting unit 40 crosses the conveyance path 11 diagonally so as to move away from the light emitting unit 20 and travels toward the light receiving unit 30.
  • the reflection part 40 is a member having a flat part parallel to the transport path 11 as a reflection surface, and for example, a metal, a mirror, or the like can be used as the reflection part 40.
  • the light receiving unit 30 receives the light reflected by the reflecting unit 40. As shown in FIG. 2, the light receiving unit 30 is disposed below the conveyance path 11. As shown in FIG. 2, the light receiving unit 30 includes a light receiving element 31, a substrate (not shown) on which the light receiving element 31 is mounted, a housing 32 that houses and protects these, And a terminal portion 33 provided at one end. In addition, the housing 32 includes a protective member 34 that is disposed so as to face the light receiving surface of the light receiving element 31 (transmits light emitted from the light emitting element 21).
  • the light receiving element 31 receives light and outputs a current corresponding to the amount of received light.
  • the specific example of the light receiving element 31 is not specifically limited, For example, a photodiode (PD), a phototransistor (PTr), a solar cell etc. are mentioned.
  • the first light guide 50 has a function of guiding the light incident from the conveyance path 11 toward the reflection section 40 and guides the light reflected by the reflection section 40 toward the conveyance path 11. It has a function.
  • the first light guide 50 includes a columnar light guide 51 provided to be inclined toward the light emitting unit 20 with respect to a direction L10 orthogonal to the transport path 11 and a direction L10 orthogonal to the transport path 11. It has a structure in which a cylindrical light guide 52 provided to be inclined toward the light receiving unit 30 is connected in a V shape by the reflection unit 40.
  • the end surface of the first light guide 50 on the transport path 11 side is a flat surface and is disposed in parallel with the transport path 11.
  • the end surface of the first light guide 50 on the transport path 11 side is a plane parallel to the transport path 11 and has a shape that is obtained by obliquely cutting a cylindrical light guide.
  • the surface of the first light guide 50 on the reflecting portion 40 side of the V-shaped connecting portion is a plane parallel to the transport path 11 and is in contact with the reflecting surface of the reflecting portion 40.
  • the second light guide 60 has a function of guiding light emitted from the light emitting unit 20 toward the transport path 11.
  • the second light guide 60 is configured by a columnar light guide provided to be inclined toward the reflecting portion 40 with respect to the direction L10 orthogonal to the transport path 11.
  • One end surface of the second light guide 60 is a flat surface perpendicular to the longitudinal direction of the second light guide 60 and is in contact with the light emitting unit 20, and the other end surface is a flat surface.
  • the other end surface (end surface on the transport path 11 side) of the second light guide 60 is a surface parallel to the transport path 11 and is shaped like a cylindrical light guide cut obliquely. ing.
  • the third light guide 70 has a function of guiding light incident from the transport path 11 toward the light receiving unit 30.
  • the third light guide 70 is configured by a columnar light guide provided to be inclined toward the reflecting portion 40 with respect to the direction L10 orthogonal to the transport path 11.
  • One end surface of the third light guide 70 is a flat surface perpendicular to the longitudinal direction of the third light guide 70 and is in contact with the light receiving unit 30, and the other end surface is a flat surface.
  • the other end surface (end surface on the transport path 11 side) of the third light guide 70 is a surface parallel to the transport path 11 and is shaped like a cylindrical light guide cut obliquely. ing.
  • the first light guide 50, the second light guide 60, and the third light guide 70 are each formed of a transparent resin.
  • the transparent resin include an acrylic resin.
  • the light emitted from the light emitting unit 20 propagates through the second light guide 60, and the second light guide 60 and the conveyance path 11 in contact with the second light guide 60.
  • the light enters the transport path 11 with an incident angle of angle ⁇ 2 and a refraction angle of angle ⁇ 3 with respect to the interface.
  • the surface of the second light guide 60 on the transport path 11 side is parallel to the transport path 11, the light incident on the transport path 11 has an optical axis L 1 orthogonal to the transport path 11 in the transport path 11.
  • Direction L10 and an angle ⁇ 3 ⁇ 1 .
  • the light incident on the first light guide 50 is specularly reflected by the reflecting portion 40 provided in parallel with the transport path 11 and propagates again toward the transport path 11.
  • the surface of the first light guide 50 on the side of the conveyance path 11 is parallel to the conveyance path 11, so that the light reflected by the reflection unit 40 is reflected between the first light guide 50 and the first light guide 50.
  • the light incident on the third light guide 70 finally enters the light receiving unit 30.
  • the angles ⁇ 1 to ⁇ 9 and the later-described ⁇ 1A and ⁇ 1B are angles on the acute angle side that the optical axis L1 of the light makes with the direction L10 orthogonal to the transport path 11.
  • the refractive index of the 1st light guide 50, the 2nd light guide 60, and the 3rd light guide 70 is larger than the refractive index of air
  • the 1st light guide 50, the 2nd light guide 60, and The angles ⁇ 5 , ⁇ 6 , ⁇ 2, and ⁇ 9 formed by the optical axis L 1 in the third light guide 70 and the direction L 10 orthogonal to the transport path 11 are respectively determined by the optical axis L 1 in the transport path 11 (air). It is smaller than the angles ⁇ 4 , ⁇ 7 , ⁇ 3, and ⁇ 8 formed with the direction L 10 orthogonal to the transport path 11.
  • the light emitting unit 20 the optical axis L1 is the direction L10 perpendicular to the conveying path 11 60 ° or more in the conveying path 11, the light toward the conveyance path 11 at an angle theta 1 is less than 90 ° Irradiate.
  • the reflectance on the surface of the transparent part 2 is increased and transmitted when entering the transparent part 2 and when exiting from the transparent part 2.
  • the apparent transmittance of the transparent portion 2 also decreases.
  • the angle ⁇ 1 is preferably 70 ° or more.
  • the light receiving unit 30 includes a detection unit (not shown) that detects the paper sheet 1 based on the output current of the light receiving element 31. Specifically, when the paper sheet 1 does not exist on the optical axis of the light irradiated by the light emitting unit 20, that is, at the first medium detection position P1 and the second medium detection position P2 in the conveyance path 11, the light is conveyed. The light passes through the path 11 and is received by the light receiving unit 30 without being attenuated by the paper sheet 1.
  • the first medium detection position P1 is positioned between the light emitting unit 20 and the reflection unit 40, and the second medium detection position P2 is positioned between the light receiving unit 30 and the reflection unit 40.
  • the opaque portion 3 of the paper sheet 1 exists on the optical axis of the light irradiated by the light emitting unit 20, that is, at least one of the first medium detection position P1 and the second medium detection position P2, At least a part is shielded from light by the opaque portion 3. Therefore, the light transmitted through the opaque portion 3 is attenuated, and the attenuated light is received by the light receiving unit 30. Further, when the transparent portion 2 of the paper sheet 1 exists on the optical axis of the light irradiated by the light emitting unit 20, that is, at least one of the first medium detection position P1 and the second medium detection position P2, the angle ⁇ 1.
  • the apparent transmittance of the transparent portion 2 also decreases.
  • the light transmitted through the transparent portion 2 of the paper sheet 1 is attenuated, and the attenuated light is received by the light receiving portion 30.
  • the amount of light received by the light receiving unit 30 is greater when the transparent part 2 or the opaque part 3 of the paper sheet 1 is present on the optical axis of light than when the paper sheet 1 is not present on the optical axis of light.
  • the output value of the light receiving element 31, for example, the output current becomes smaller in the latter case than in the former case.
  • the detection unit can detect the paper sheet 1 based on the amount of light received by the light receiving element 31, that is, the output signal of the light receiving element 31.
  • the detection unit detects the paper sheet 1 based on the attenuation rate of the output signal of the light receiving element. More specifically, in this case, first, the detection unit acquires the output value of the light receiving element 31 at a stage before the paper sheet 1 is conveyed, and records it in the storage unit (not shown) as an initial value. deep. Thereafter, the detection unit sequentially acquires the output value of the light receiving element 31 in a predetermined cycle while the paper sheet 1 is being conveyed. In addition, the detection unit calculates the attenuation rate of each output value acquired with respect to the initial value by the following equation.
  • Attenuation rate (%) (initial value ⁇ output value) / initial value ⁇ 100
  • the detection unit determines that the sheet 1 exists when the attenuation rate is equal to or greater than the threshold value stored in the storage unit, and determines that the sheet 1 does not exist when the attenuation rate is less than the threshold value. By determining, the paper sheet 1 is detected.
  • the paper sheet passage detection device 10 performs light emission and light reception as described above, and detects the presence or absence of the paper sheet 1 being conveyed in the conveyance path 11. That is, the sheet 1 is conveyed, and the first medium detection position P1 positioned between the light emitting unit 20 and the reflecting unit 40 and the second medium positioned between the light receiving unit 30 and the reflecting unit 40.
  • the amount of light (the amount of received light) received by the light receiving unit 30 changes.
  • the presence or absence of the paper sheet 1 can be detected by measuring the change in the amount of light received by the light receiving unit 30.
  • the paper sheet passage detection device 10 includes the light emitting unit 20 and the light receiving unit 30 arranged on one side of the conveyance path 11, and the reflection arranged in parallel with the conveyance path 11 on the other side of the conveyance path 11. Since the sheet 40 can be detected at the two medium detection positions P1 and P2 by using one set of the light emitting unit 20 and the light receiving unit 30, It is possible to simplify the structure of the apparatus by reducing the quantity used, to make the structure inexpensive, and to detect the paper sheet 1 having the transparent portion 2 at a plurality of locations on the transport path 11. Further, by reducing the number of sensors used, the paper sheet passage detection device 10 can have a structure with a high degree of mechanical freedom.
  • the optical axis L ⁇ b> 1 is inclined with respect to the direction L ⁇ b> 10 orthogonal to the transport path 11 in the transport path 11, and the transport path is
  • the reflecting portion 40 parallel to the transport path 11 at a position separated from the head 11 by a predetermined distance D1
  • the reflecting position R1 by the reflecting portion 40 is set to be more than the reflecting position R2 by the specular reflecting portion 4 of the paper sheet 1. It is possible to provide it separately from the light emitting unit 20.
  • the light receiving part 30 can be disposed at a position where it is difficult to receive the reflected light M from the specular reflection part 4. It is possible to prevent the unit 30 from receiving the reflected light M from the specular reflection unit 4 and erroneously detecting that there is no paper sheet 1, and the detection ability of the paper sheet 1 can be improved.
  • the paper sheet 1 is conveyed through the paper sheet passage detection device 10 from the front of the paper to the back of the paper or from the back of the paper to the front of the paper.
  • the distance D1 between the conveyance path 11 and the reflection part 40 is not specifically limited, It is preferable that it is 1 time or more of the distance between the conveyance guides 12, it is more preferable that it is 2 times or more, and it is 3 times or more. More preferably it is.
  • the light receiving unit 30 is disposed at a position separated from the transport path 11 by a predetermined distance D2.
  • the light receiving unit 30 is disposed at a position where it is more difficult to receive the reflected light M from the specular reflecting unit 4 even when the specular reflecting unit 4 is present on the paper sheet 1. Therefore, the detection ability of the paper sheet 1 can be further improved.
  • the distance D2 between the transport path 11 and the light receiving unit 30 is not particularly limited, but is preferably at least 1 time, more preferably at least 2 times, and more than 3 times the distance between the transport guides 12. More preferably it is.
  • the paper sheet passage detection device 10 includes the first light guide 50 provided between the conveyance path 11 and the reflection unit 40, thereby allowing light incident on the reflection unit 40 from the conveyance path 11. And the angle of the light incident on the conveyance path 11 from the reflecting unit 40 can be adjusted, and the distance between the light receiving unit 30 and the light emitting unit 20 can be reduced. As a result, the paper sheet passage detection device 10 can be reduced in size.
  • the paper sheet passage detection device 10 is provided with a second light guide provided between the conveyance path 11 and the light emitting unit 20 and between the conveyance path 11 and the light receiving unit 30, respectively.
  • 60 and the third light guide 70 are further adjusted to adjust the angle of light incident on the transport path 11 from the light emitting section 20 and the angle of light incident on the light receiving section 30 from the transport path 11, and the light receiving section 12.
  • the distance between the light emitting unit 20 and the light emitting unit 20 can be reduced. As a result, the paper sheet passage detection device 10 can be reduced in size.
  • the light emitted from the light emitting unit 20 is preferably incident on the transport path 11 from the second light guide 60 at an incident angle less than the critical angle. That is, the angle ⁇ 2 is preferably less than the critical angle with respect to the transport path 11 (air) of the second light guide 60.
  • the light reflected by the reflecting unit 40 is preferably incident on the transport path 11 from the first light guide 50 at an incident angle less than the critical angle. That is, the angle ⁇ 6 is preferably less than the critical angle with respect to the transport path 11 (air) of the first light guide 50.
  • the paper sheet passage detection device 10 includes a conventionally known light source control unit (not shown) that controls the light emission of the light emitting unit 20 and a conventionally known output adjustment that adjusts the output of the light receiving unit 30. Part (not shown) and the like.
  • the use of the paper sheet passage detection device 10 is not particularly limited, for example, a timing sensor of a paper sheet identification device such as a banknote recognition device, that is, a sensor for determining the timing of the identification processing of the paper sheet identification device is cited. It is done. In this case, it is possible to prevent the paper sheet identification apparatus from executing the identification process of the paper sheet 1 having the transparent portion 2 at an incorrect timing.
  • Other applications include a sensor that detects the paper sheet 1 that is transported in a paper sheet processing apparatus such as a banknote deposit and withdrawal device. In this case, it is possible to prevent the occurrence of problems such as false jams in the paper sheet processing apparatus.
  • the paper sheet passage detection device 10 detects at least one of the passage, arrival, and presence / absence of the paper sheet 1.
  • the false jam is a phenomenon in which even if the paper sheet 1 is not actually jammed, the paper sheet processing apparatus determines that it is jammed and stops due to an abnormality of the optical sensor itself.
  • the contents of the identification processing of the paper sheet identification device are not particularly limited.
  • the type of the paper sheet 1 (denomination in the case of banknotes) is identified, whether the paper sheet 1 is true or false, and the paper sheet.
  • Various functions such as reading of symbols such as numbers and characters printed on class 1 can be mentioned.
  • the paper sheet passage detection device 10 is a paper sheet passage detection device 10 that optically detects the passage of the paper sheet 1 transported in the transport path 11. disposed on one side of the conveying path 11, and the optical axis L1 is the direction L10 perpendicular to the conveying path 11 60 ° or more in the conveying path 11, toward the conveyance path 11 at an angle theta 1 is less than 90 °
  • the light emitting unit 20 that emits light and the other side of the conveyance path 11 are arranged in parallel to the conveyance path 11 at a position separated from the conveyance path 11 and the light emitted from the light emission unit 20 is emitted.
  • positioned at the said one side of the conveyance path 11, and reflected by the reflection part 40 are provided.
  • Optical axis L1 is the direction L10 perpendicular to the conveying path 11 60 ° or more in the conveying path 11, by using a light-emitting portion 20 that emits light toward the transportation path 11 so as to form an angle theta 1 is less than 90 ° Since the light from the light emitting section 20 obliquely crosses the paper sheet 1, the distance of the light passing through the transparent section 2 of the paper sheet 1 is increased, the transmittance is decreased, and the light enters the transparent section 2. In addition, when the light is emitted from the transparent portion 2, the reflectance at the surface of the transparent portion 2 is increased and the transmitted light is reduced, so that the apparent transmittance of the transparent portion 2 is also lowered.
  • the light emitting unit 20 and the light receiving unit 30 arranged on one side of the conveyance path 11 and the reflection unit 40 arranged in parallel to the conveyance path 11 on the other side of the conveyance path 11 make one set. Since the paper sheet 1 can be detected at two medium detection positions P1 and P2 using the light emitting unit 20 and the light receiving unit 30, the number of sensors used is reduced and the structure of the apparatus is simplified. In addition to the inexpensive configuration, it is possible to detect the paper sheet 1 having the transparent portion 2 at a plurality of locations on the transport path 11.
  • the optical axis L 1 forms an angle ⁇ 1 of 60 ° or more and less than 90 ° with the direction L 10 orthogonal to the transport path 11, and at a position separated from the transport path 11 by a predetermined distance.
  • the reflecting part 40 By disposing the reflecting part 40 in parallel with the transport path 11, it is possible to provide the reflection position R ⁇ b> 1 by the reflection part 40 farther from the light emitting part 20 than the reflection position R ⁇ b> 2 by the specular reflection part 4 of the paper sheet 1.
  • the specular reflection part 4 such as a hologram is present on the paper sheet 1
  • the light receiving part 30 can be disposed at a position where it is difficult to receive the reflected light M from the specular reflection part 4. It is possible to prevent the unit 30 from receiving the reflected light M from the specular reflection unit 4 and erroneously detecting that there is no paper sheet 1, and to improve the detection capability of the paper sheet 1.
  • Embodiment 2 In the present embodiment, features unique to the present embodiment will be mainly described, and the description overlapping with the first embodiment will be omitted. Moreover, in this embodiment and Embodiment 1, the same code
  • the present embodiment is substantially the same as the first embodiment except for the points described below.
  • a pair of paper sheet passage detection devices (a pair of medium passage detection devices) 100 including two paper leaf passage detection devices 10 according to the first embodiment will be described.
  • the pair of paper sheet passage detection devices 100 according to the present embodiment includes two paper sheet passage detection devices 10 (paper sheet passage detection devices 10A and 10B) according to the first embodiment.
  • the two reflectors 40A and 40B in the two paper sheet passage detection devices 10A and 10B are positioned on the opposite sides of the transport path 11, and one of the two paper sheet passage detection devices 10A and 10B has two In order to detect the passage of the paper sheet 1 at the medium detection positions PA1 and PA2, and the other detects the passage of the paper sheet 1 at the same two positions PB1 and PB2 as the two medium detection positions PA1 and PA2. Be placed. More specifically, of the two paper sheet passage detection devices 10A and 10B, the light emitting unit 20A and the light receiving unit 30A in one paper sheet passage detection device 10A are located below the conveyance path 11, and the reflection unit 40A is conveyed.
  • the light emitting unit 20B and the light receiving unit 30B in the other paper sheet passage detection device 10B are disposed on the upper side of the path 11, and the reflecting unit 40B is disposed on the lower side of the transport path 11.
  • the light emitting unit 20A forms an angle ⁇ 1A of 60 ° or more and less than 90 ° with the direction L10 in the transport path 11 where the optical axis L1A is orthogonal to the transport path 11.
  • the light emitting unit 20B is 60 ° or more in a direction L10 in which the optical axis L1B is orthogonal to the conveyance path 11 in the conveyance path 11, Light is irradiated toward the conveyance path 11 so as to form an angle ⁇ 1B of less than 90 °.
  • one medium detection position can be determined with two paper sheet passage detection apparatuses 10A and 10B. That is, it is possible to determine the presence / absence of the paper sheet 1 with the two optical axes L1A and L1B per medium detection position. Specifically, when at least one of the detection results of the two paper sheet passage detection devices 10A and 10B (two detection units) has the paper sheet 1, it is determined that the paper sheet 1 exists. In both cases, when there is no paper sheet 1, it is determined that the paper sheet 1 does not exist.
  • the two optical axes L1A and L1B are monitored, and the paper sheet 1 is determined based on the result of the larger attenuation amount. Therefore, the detection ability of the paper sheet 1 can be further improved.
  • the light having the optical axis L1A is transmitted to the paper sheet 1 at each medium detection position PA1, PB1, PA2, PB2.
  • the reflectance on the surface of the transparent portion 2 is increased and the transmitted light is attenuated.
  • the attenuation of the transmittance of the part 2 is increased.
  • the pair of paper sheet passage detection devices 100 is not easily affected by the conveyance state of the paper sheet 1 and has an excellent detection capability.
  • the two light emitting units 20A and 20B in the two paper sheet passage detection devices 10A and 10B may be arranged to face each other via the transport path 11 or may be arranged to face each other.
  • the refractive indexes of the two second light guides 60A and 60B may be made different from each other or by tilting the two second light guides 60A and 60B at different angles with respect to the transport path 11, two The light emitting units 20A and 20B can be shifted without being opposed to each other.
  • the two light receiving units 30A and 30B in the two paper sheet passage detection devices 10A and 10B may be arranged to face each other via the transport path 11 or may be arranged to face each other.
  • the light receiving portions 30A and 30B can be shifted without being opposed to each other.
  • the two reflecting portions 40A and 40B may be arranged to face each other via the conveyance path 11 or may be arranged not to face each other.
  • the reflecting portions 40A and 40B can be shifted without being opposed to each other.
  • the pair of paper sheet passage detection devices 100 includes two paper sheet passage detection devices 10 according to the first embodiment, and includes two paper sheet passage detection devices 10A and 10B.
  • the two reflecting portions 40A and 40B are located on the opposite sides of the conveyance path 11, and one of the two paper sheet passage detection devices 10A and 10B passes through the paper sheet 1 at two medium detection positions PA1 and PA2. , And the other is arranged such that the passage of the paper sheet 1 is detected at the same two positions PB1 and PB2 as the two medium detection positions PA1 and PA2.
  • the pair of paper sheet passage detection devices 200 includes two paper sheet passage detection devices 10 (paper sheet passage detection devices 10C and 10D) according to the first embodiment.
  • the two sheet passage detection devices 10C and 10D in which the reflection units 40C and 40D are arranged on the upper side of the conveyance path 11, and the light emitting units 20C and 20D and the light receiving units 30C and 30D are arranged on the lower side of the conveyance path 11, These are disposed adjacent to each other in the width direction of the transport path 11.
  • the distance D3 between the first medium detection position PC1 and the second medium detection position PC2 is set by the first light guide of the paper sheet passage detection device 10C.
  • the second medium detection position PC2 and the first medium detection position PC2 can be adjusted by using the third light guide of the paper sheet passage detection device 10C and the second light guide of the paper sheet passage detection device 10D.
  • the medium detection positions PC1, PC2, PD1, and PD2 can be easily arranged at the same pitch by making the distances D3 to D5 equal to each other.
  • the 2nd light guide 60, the 3rd light guide 70, and the 1st light guide 50 are each provided between the light emission part 20, the light-receiving part 30, the reflection part 40, and the conveyance path 11.
  • at least one of the second light guide 60, the third light guide 70, and the first light guide 50 may not be provided.
  • the light receiving unit 30 is disposed at a position separated from the transport path 11 by a predetermined distance D2.
  • one set of the light emitting unit 20 and the light receiving unit 30 is arranged on one side of the conveyance path 11, and one reflection unit 40 is arranged on the other side of the conveyance path 11, thereby providing two places on the conveyance path 11.
  • the medium detection positions are provided, but two or more reflection parts 40 are arranged for one set of the light emitting unit 20 and the light receiving unit 30 to provide three or more medium detection positions on the conveyance path 11. It is also possible.
  • the light emitting unit 20 and the light receiving unit 30 are arranged on one side of the conveyance path 11, and the light emitting unit is interposed between the pair of light emitting units 20 and the light receiving unit 30.
  • the first reflector 40E1 and the first light guide 50E1 are on the other side of the transport path 11, the second reflector 40E2 and the first light guide 50E2 are on the one side of the transport path 11, and the third The aspect which arrange
  • positions the reflection part 40E3 and the 1st light guide 50E3 of this to the other side of the conveyance path 11 is mentioned.
  • the light irradiated from the light emission part 20 is reflected in each of the three reflection parts 40E1, 40E2, and 40E3 provided in the one side and other side of the conveyance path 11, and the light-receiving part 30 Therefore, the first, second, third and fourth medium detection positions P1, P2, P3 and P4 can be provided on the transport path 11. In this way, by providing two or more reflection units 40 for one set of the light emitting unit 20 and the light receiving unit 30, three or more medium detection positions can be provided in the conveyance path 11.
  • the present invention is a technique useful for detecting the presence or absence of a medium by a medium passage detection device.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

La présente invention concerne un dispositif de détection de transit de support et des dispositifs de détection de transit de support appariés grâce auxquels, par un ensemble d'une partie d'émission de lumière et d'une partie de photorécepteur et au niveau d'une pluralité de sites sur un trajet de transport, il est possible de détecter un support comportant une partie transparente et il est également possible de détecter un support comportant une surface réfléchissante. La présente invention concerne un dispositif de détection de transit de support qui détecte optiquement le transit d'un support transporté à l'intérieur d'un trajet de transport, ledit dispositif étant caractérisé en ce qu'il comprend : une partie d'émission de lumière qui est positionnée d'un côté du trajet de transport, et qui expose le trajet de transport à un rayonnement de lumière de sorte qu'un axe optique du trajet de transport forme un angle supérieur ou égal à 60° et inférieur à 90° avec une direction perpendiculaire au trajet de transport ; une partie réfléchissante qui est positionnée de l'autre côté du trajet de transport en parallèle au trajet de transport à une position qui est séparée du trajet de transport d'une distance prescrite, et qui réfléchit le rayonnement de lumière de la partie d'émission de lumière ; et une partie de photorécepteur qui est positionnée dudit côté du trajet de transport et qui reçoit la lumière réfléchie par la partie réfléchissante.
PCT/JP2018/004053 2017-02-15 2018-02-06 Dispositif de détection de transit de support et dispositifs de détection de transit de support appariés WO2018150958A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-026306 2017-02-15
JP2017026306A JP2018132955A (ja) 2017-02-15 2017-02-15 媒体通過検知装置及び一対の媒体通過検知装置

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WO2018150958A1 true WO2018150958A1 (fr) 2018-08-23

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JP2022086439A (ja) 2020-11-30 2022-06-09 株式会社Pfu 媒体搬送装置
JP2022086472A (ja) * 2020-11-30 2022-06-09 株式会社Pfu 媒体搬送装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002033506A (ja) * 2000-07-13 2002-01-31 Laurel Seiki Kk 光学センサ装置
JP2011128736A (ja) * 2009-12-16 2011-06-30 Oki Electric Industry Co Ltd 媒体検出装置
JP2016509315A (ja) * 2013-02-25 2016-03-24 エムイーアイ インコーポレーテッド 有価証書を処理するためのシステム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002033506A (ja) * 2000-07-13 2002-01-31 Laurel Seiki Kk 光学センサ装置
JP2011128736A (ja) * 2009-12-16 2011-06-30 Oki Electric Industry Co Ltd 媒体検出装置
JP2016509315A (ja) * 2013-02-25 2016-03-24 エムイーアイ インコーポレーテッド 有価証書を処理するためのシステム

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