WO2009096534A1 - 紙幣処理装置及び真贋判定方法 - Google Patents
紙幣処理装置及び真贋判定方法 Download PDFInfo
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- WO2009096534A1 WO2009096534A1 PCT/JP2009/051598 JP2009051598W WO2009096534A1 WO 2009096534 A1 WO2009096534 A1 WO 2009096534A1 JP 2009051598 W JP2009051598 W JP 2009051598W WO 2009096534 A1 WO2009096534 A1 WO 2009096534A1
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- banknote
- allowable range
- actual measurement
- bill
- length
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Classifications
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/16—Testing the dimensions
- G07D7/162—Length or width
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
- G07F7/04—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by paper currency
Definitions
- the present invention relates to a banknote processing apparatus capable of determining the authenticity of a banknote and an authenticity determination method used in such a banknote processing apparatus.
- a banknote processing apparatus identifies the validity of a banknote inserted by a user from a banknote insertion slot, and provides various products and services according to the banknote value identified as valid, for example, a game It is incorporated in game media lending machines installed in the venue, or vending machines and ticket machines installed in public places.
- the banknote handling apparatus described above is configured to determine the type of the inserted banknote (authentication determination), for example, as disclosed in Patent Document 1.
- the banknote processing apparatus disclosed in Patent Document 1 is configured to perform authenticity determination of a banknote using length data, and a light emitting element and a light receiving element are installed in a transport path through which the banknote is transported. The length of the inserted bill is detected.
- the pattern data of the banknote is obtained based on the time-series output of the light receiving element, pattern comparison means for comparing with the reference pattern data corresponding to the type of banknote is provided, and the detected length data, And the authenticity of a banknote is determined based on the comparison result of a pattern comparison means.
- Japanese Patent No. 6-243234 Japanese Patent No. 6-243234
- the banknotes may be determined to be false even if the banknotes are genuine. That is, since a banknote is normally formed with the fibrous material, it is thought that it shrink
- a bill processing apparatus capable of more accurately authenticating the authenticity and a method for determining the authenticity used in such a banknote processing apparatus are provided.
- the banknote handling apparatus includes a banknote reading unit that reads banknotes, and an allowable range storage unit that stores an allowable range that is allowed from a reference value that is a reference for the length of the print area for each surface of the banknote.
- a correction value is calculated for the measured data, and the calculated correction
- a comparison determination unit that corrects the actual measurement data of the other surface based on the value, compares the corrected actual measurement data with the allowable range in the other surface stored in the allowable range storage unit, and executes authentication determination processing And having.
- FIG. 1 It is a figure which shows the structure of the banknote processing apparatus which concerns on this embodiment, and is a perspective view which shows the whole structure.
- the perspective view which shows the state which opened the opening-and-closing member with respect to the main body frame of an apparatus main body.
- the right view which showed roughly the conveyance path
- the right view which shows schematic structure of the power transmission mechanism for driving the press board arrange
- the left view which shows schematic structure of the drive source for driving a banknote conveyance mechanism, and a driving force transmission mechanism.
- the timing chart which shows the lighting control of the light emission part in a banknote reading means, and shows the lighting control of the light emission part at the time of reading a banknote.
- the block diagram which shows the structure of the control means which controls the drive of drive members, such as a banknote conveyance mechanism and a banknote reading means.
- the schematic diagram which illustrates the range which acquires the length data of the printing area
- the graph which showed the dispersion
- the flowchart (the 3) explaining the processing operation
- the flowchart explaining a conveyance path open process procedure. 7 is a flowchart for explaining a skew correction operation processing procedure.
- the flowchart which shows a conveyance path closing process procedure.
- FIG. 1 to FIG. 5 are diagrams showing the configuration of the banknote handling apparatus according to the present embodiment
- FIG. 1 is a perspective view showing the overall configuration
- FIG. 2 is a diagram showing an opening / closing member opened with respect to the main body frame of the apparatus main body
- FIG. 3 is a right side view schematically showing a transport path of a bill inserted from the insertion slot
- FIG. 4 is a diagram for driving a pressing plate disposed in the bill housing part.
- FIG. 5 is a right side view illustrating a schematic configuration of the power transmission mechanism
- FIG. 5 is a left side view illustrating a schematic configuration of a driving source and a driving force transmission mechanism for driving the bill conveyance mechanism.
- the banknote handling apparatus 1 of the present embodiment is configured to be incorporated into various gaming machines such as a slot machine, for example, and is provided in the apparatus main body 2 and the apparatus main body 2 to stack and accommodate a large number of banknotes. And a storage unit (storage stacker; safe) 100 that can be used.
- the housing 100 may be detachable from the apparatus main body 2.
- the apparatus main body 2 can be obtained by pulling the handle 101 provided on the front surface in a state where a lock mechanism (not shown) is released. It is possible to remove from.
- the apparatus main body 2 has a main body frame 2A and an opening / closing member 2B configured to be opened and closed with one end portion as a rotation center with respect to the main body frame 2A.
- the main body frame 2 ⁇ / b> A and the opening / closing member 2 ⁇ / b> B when the opening / closing member 2 ⁇ / b> B is closed with respect to the main body frame 2 ⁇ / b> A, a gap in which bills are conveyed to the opposite portions (banknote conveyance path 3) Is formed, and the bill insertion slot 5 is formed on the front exposed side of both so as to coincide with the bill transport path 3.
- the bill insertion slot 5 has a slit-like opening so that it can be inserted into the apparatus main body 2 from the short side of the bill.
- a banknote transport mechanism 6 that transports banknotes along the banknote transport path 3
- an insertion detection sensor 7 that detects a banknote inserted into the banknote insertion slot 5
- an insertion detection sensor 7 is installed on the downstream side of the bill 7 and reads the information of the bill in the transported state
- the skew correction mechanism 10 for accurately positioning and transporting the bill relative to the bill reading means 8, and the bill is skewed.
- a movable piece passage detection sensor 12 that detects that a pair of movable pieces constituting the correction mechanism has passed, and a discharge detection sensor 18 that detects that a bill has been discharged to the bill housing part 100 are provided.
- the banknote transport path 3 extends from the banknote insertion slot 5 toward the back side, extends from the first transport path 3A and the first transport path 3A toward the downstream side, and enters the first transport path 3A.
- a second conveyance path 3B inclined at a predetermined angle and downward is provided.
- the downstream side of the second transport path 3B is bent in the vertical direction, and a discharge port 3a for discharging the banknote is formed in the banknote accommodating part 100 at the downstream end thereof, and discharged from here.
- the bill is fed into the inlet (receiving port) 103 of the bill housing part 100 in the vertical direction.
- the banknote transport mechanism 6 is a mechanism that enables the banknote inserted from the banknote insertion slot 5 to be transported along the insertion direction, and allows the banknote in the inserted state to be transported back toward the banknote insertion slot 5.
- the banknote transport mechanism 6 is driven by a motor 13 (see FIG. 5) that is a drive source installed in the apparatus main body 2 and is rotated by the motor 13 so that the banknote transport path 3 has a predetermined interval along the banknote transport direction.
- the transport roller pairs (14A, 14B), (15A, 15B), (16A, 16B), and (17A, 17B) are provided.
- the pair of transport rollers is installed so that a part thereof is exposed in the banknote transport path 3, and transport rollers 14 ⁇ / b> B, 15 ⁇ / b> B, 16 ⁇ / b> B, and 17 ⁇ / b> B, all installed below the banknote transport path 3, are driven by the motor 13.
- the conveying rollers 14A, 15A, 16A, and 17A installed on the upper side are pinch rollers that are driven by these rollers.
- the conveyance roller pair (14A, 14B) that first clamps the banknote inserted from the banknote insertion slot 5 and transports it to the back side is installed at one central position of the banknote transport path 3, as shown in FIG.
- the transport roller pairs (15A, 15B), (16A, 16B), and (17A, 17B) that are sequentially arranged on the downstream side thereof are spaced apart along the width direction of the banknote transport path 3. Two places are installed.
- the upper conveyance roller 14A is in the state spaced apart from the lower conveyance roller 14B.
- the insertion detection sensor 7 detects this insertion, the upper transport roller 14A is driven toward the lower transport roller 14B to sandwich the inserted bill.
- the upper transport roller 14A is driven and controlled by a roller raising / lowering motor 70 (see FIG. 6) as a drive source so as to contact / separate from the lower transport roller 14B.
- a roller raising / lowering motor 70 see FIG. 6
- the upper transport roller 14 ⁇ / b> A is
- the load on the banknote is released away from the transport roller 14B and the skew correction process is completed, the upper transport roller 14A is driven again toward the lower transport roller 14B to pinch the banknote.
- the skew correction mechanism 10 includes a pair of left and right movable pieces 10A (only one side is shown) that performs skew correction, and the pair of left and right movable pieces 10A is driven by driving a motor 40 for the skew correction mechanism. It moves so that it may approach, and the correction process of the skew with respect to a banknote is performed by this.
- Conveying rollers 14B, 15B, 16B and 17B installed on the lower side of the banknote conveying path 3 are, as shown in FIG. 5, a motor 14 and a pulley 14C installed at the end of the driving shaft of each conveying roller. , 15C, 16C and 17C. That is, a drive pulley 13A is installed on the output shaft of the motor 13, and the pulleys 14C, 15C, 16C and 17C installed at the end portions of the drive shafts of the respective transport rollers are connected to the drive pulley 13A.
- the drive belt 13B is wound around. A tension pulley is engaged with the drive belt 13B at an appropriate position to prevent looseness.
- the transport rollers 14B, 15B, 16B and 17B are synchronously driven in the normal direction, transport bills in the insertion direction, and the motor 13 is driven in the reverse direction. Then, the said conveyance rollers 14B, 15B, 16B, and 17B are reversely driven synchronously, and convey a banknote toward the banknote insertion slot 5 side.
- the insertion detection sensor 7 generates a detection signal when a banknote inserted into the banknote insertion slot 5 is detected. When this detection signal is issued, the motor 13 is driven to rotate forward, and the banknote is inserted. Transport toward The insertion detection sensor 7 of the present embodiment is installed between the transport roller pair (14A, 14B) and the skew correction mechanism 10, and is configured by an optical sensor, for example, a retroreflective photosensor. However, other than that, it may be constituted by a mechanical sensor.
- the movable piece passage detection sensor 12 generates a detection signal when it is detected that the leading edge of the bill has passed through the pair of left and right movable pieces 10A constituting the skew correction mechanism 10, and this detection signal Is issued, the drive of the motor 13 is stopped, and the skew correction processing is performed.
- the movable piece passage detection sensor 12 of the present embodiment is installed on the upstream side of the bill reading means 8 and is constituted by an optical sensor or a mechanical sensor, like the insertion detection sensor 7.
- emission detection sensor 18 detects the trailing end of the banknote to pass, and detects that the banknote was discharged
- the unit 100 is disposed immediately before the receiving port 103.
- the discharge detection sensor 18 is also composed of an optical sensor or a mechanical sensor, like the insertion detection sensor 7.
- the bill reading means 8 reads the bill information of the bill conveyed with the skew corrected by the skew correction mechanism 10 and identifies its validity (authenticity).
- the banknote reading means 8 is configured to include a line sensor that performs reading by irradiating light from both sides of a banknote to be conveyed and detecting the transmitted light and reflected light with a light receiving element. And installed in the first transport path 3A.
- the above-described bill reading means 8 is used to irradiate the printed portion of the bill to be conveyed, receive the transmitted light and the reflected light, and perform printing.
- a first authenticity determination process for identifying whether or not a feature point in the portion matches a genuine one, and one of the transmitted light and the reflected light
- the printing length on both sides of the banknote the printing length of the entire printed area may be used, or the feature portion may be extracted and the printing length between the feature points may be used.
- a second authenticity determination process is performed for identifying whether or not the bill is genuine.
- the present invention is characterized in the second authenticity determination process described above, and the second authenticity determination process may be performed after the first authenticity determination process is executed. It may be executed before the first authenticity determination process. In the present embodiment, as described later, the second authenticity determination process is performed after the first authenticity determination process is executed.
- light having a predetermined wavelength is irradiated from the light emitting means to the print area on the surface of the bill to be conveyed, and the transmitted light data of the light transmitted through the bill and the reflection are reflected.
- the reflected light data of the obtained light is acquired and compared with the reference data of the genuine banknote stored in advance.
- the genuine banknote since the genuine banknote has a region in which the acquired image data differs depending on the wavelength of light to be irradiated (for example, visible light or infrared light), this point is determined in the first authenticity determination process.
- the authenticity of authenticity I try to raise more. That is, since red light and infrared light have different wavelengths, if transmitted light data or reflected light data from a plurality of lights having different wavelengths is used for determining the authenticity of a bill, it passes through a specific area between a genuine note and a counterfeit bill. Transmitted light and reflected light reflected from a specific region have properties that the transmittance and the reflectance are different. For this reason, the identification accuracy of the authenticity of a banknote is raised more by using the light source of a some wavelength.
- the second authenticity determination process for example, image information on both sides of the banknote is acquired as pixel information along the banknote conveyance direction by the above-described banknote reading unit 8, and each pixel information along the conveyance direction is used to obtain each piece of pixel information along the conveyance direction.
- the printing length on the surface is derived, and authenticity determination processing is performed based on this printing length.
- the one whose printing length is different from a genuine banknote is excluded as a fake, and by performing such an authenticity determination process, the identification accuracy of the banknote is further improved. It becomes possible to raise.
- banknote reading means 8 controls the lighting of the light emitting part at a predetermined interval and detects transmitted light and reflected light when the banknote passes by a line sensor, as described later.
- the sensor makes it possible to acquire image data based on a plurality of pieces of pixel information with a predetermined size as one unit.
- the image data acquired by the line sensor is converted into data including color information having brightness for each pixel by a conversion unit described later.
- the color information for each pixel having brightness that is converted by the conversion unit corresponds to a gray value, that is, a density value (luminance value), and is, for example, 1-byte information according to the density value. , 0 to 255 (0: black to 255: white) are assigned to each pixel.
- a predetermined area of the banknote is extracted, pixel information (density value) included in the area and pixel information of the same area of the genuine note are used, and these are appropriately correlated.
- the authenticity can be identified by the correlation coefficient calculated by substituting it into the equation.
- an analog waveform can be generated from transmitted light data or reflected light data, and authenticity can be identified by comparing the shapes of the waveforms.
- the image data acquired as pixel information also depends on the resolution of the line sensor. For example, if one pixel has a resolution of about 0.508 mm in the banknote length direction, the banknote transport direction When acquiring the length from the total number of pixels, it is possible to exclude at least a print length of about 1 to 2 mm as a fake. Note that if the identification accuracy based on the print length is further increased, the resolution of the line sensor may be increased. However, if the identification accuracy is increased too much, even if it is a real banknote, it has a slight production error during printing. The above resolution is considered sufficient for a line sensor.
- the bill reading means 8 described above is disposed on the opening / closing member 2B side, and a light emitting unit 80 including a first light emitting unit 80a capable of irradiating infrared light and red light on the upper side of a conveyed bill, and a main body frame And a light emitting / receiving unit 81 disposed on the 2A side.
- the light receiving / emitting unit 81 is disposed adjacent to both sides of the light receiving unit 81a in the banknote conveyance direction, and includes a light receiving unit 81a having a light receiving sensor facing the first light emitting unit 80a so as to sandwich the banknote. And a second light emitting portion 81b that can emit light.
- the first light emitting unit 80a disposed opposite to the light receiving unit 81a functions as a light source for transmission.
- the first light emitting unit 80a is formed of a rectangular rod-shaped body made of synthetic resin that emits light from the LED element 80b attached to one end through a light guide 80c provided inside.
- the 1st light emission part of such composition is arranged in the shape of a line in parallel with light reception part 81a (light reception sensor), and is simple composition, and with respect to the whole conveyance path width direction range of the bill conveyed It becomes possible to irradiate uniformly as a whole.
- the light receiving unit 81a of the light receiving / emitting unit 81 is formed in a strip shape extending in the crossing direction with respect to the banknote transport path 3 and having a width that does not affect the sensitivity of a light receiving sensor (not shown) provided in the light receiving unit 81a. It is formed into a thin plate shape.
- the light receiving sensor is provided with a plurality of CCDs (Charge Coupled Devices) in the center of the light receiving portion 81a in the thickness direction, and condenses transmitted light and reflected light above the CCD.
- the line sensor is configured as a so-called line sensor in which a green lens array 81c is arranged in a line shape.
- the transmitted light or reflected light of infrared light or red light from the first light emitting unit 80a or the second light emitting unit 81b irradiated toward the bill to be determined as authenticity is received, and the luminance is received as received light data. It is possible to generate grayscale data (pixel data including brightness information) corresponding to the above and a two-dimensional image from this grayscale data.
- the second light emitting unit 81b of the light emitting / receiving unit 81 functions as a light source for reflection.
- the second light emitting unit 81b is made of a synthetic resin that can uniformly irradiate light from the LED element 81d attached to one end through the light guide 81e provided inside. It is composed of a rectangular bar.
- the second light emitting unit 81b is also configured to be arranged in a line parallel to the light receiving unit 81a (line sensor).
- the second light emitting unit 81b can irradiate light toward the banknote at an elevation angle of 45 degrees, for example, and is disposed so that reflected light from the banknote is received by the light receiving unit 81a.
- the light emitted from the second light emitting unit 81b is incident on the light receiving unit 81a at 45 degrees, but the incident angle is not limited to 45 degrees, and there is no shading with respect to the surface of the banknote. If light can be irradiated uniformly, the installation state can be appropriately set. For this reason, about the arrangement
- the second light emitting unit 81b is installed on both sides with the light receiving unit 81a in between so that light is irradiated from both sides at an incident angle of 45 degrees. This is because if there are scratches or folds on the banknote surface, and light is irradiated only from one side to the irregularities generated on these scratches or folds, the irregularities will inevitably become blocked by light. A spot may occur. For this reason, by irradiating light from both sides, it is possible to prevent shadows from being formed in the uneven portions, and to obtain image data with higher accuracy than irradiation from one side. Of course, about the 2nd light emission part 81b, the structure installed only in one side may be sufficient.
- the configurations and arrangements of the light emitting unit 80 and the light emitting / receiving unit 81 described above are not limited to the present embodiment, and can be appropriately modified.
- the lighting is controlled at predetermined intervals. That is, the four light sources including the light source for transmitting red light and infrared light and the light source for reflecting red light and infrared light in the first light emitting unit 80a and the second light emitting unit 81b are arranged at a predetermined interval (predetermined). The lighting control is repeated so that two or more light sources are not turned on at the same time without repeating the phases of the light sources.
- the other three light sources are controlled to be turned off.
- the light of each light source is detected at regular intervals, and the transmitted light and reflected light of red light, the transmitted light and reflected light of infrared light are used. It is possible to read an image made up of grayscale data in the banknote print area, and to measure the print length on both sides. In this case, the resolution can be increased by controlling the lighting interval to be short.
- the banknote accommodating part 100 which accommodates the banknote etc. which were mentioned above laminates
- the main body frame 100 ⁇ / b> A that constitutes the banknote accommodating part 100 is configured in a substantially rectangular parallelepiped shape, and an urging means (biasing spring) 106 is provided inside the front wall 102 a.
- an urging means biasing spring
- One end is attached, and the other end is provided with a placing plate 105 for sequentially stacking banknotes fed through the receiving port 103 described above. For this reason, the mounting plate 105 is in a state of being urged toward the pressing plate 115 described later via the urging means 106.
- a press standby unit 108 is provided so as to wait and hold the falling banknote as it is so as to be continuous with the receiving port 103.
- a pair of regulating members 110 are arranged on both sides of the pressing standby unit 108 on the mounting plate side so as to extend in the vertical direction. Between the pair of regulating members 110, an opening is formed so that the pressing plate 115 passes when banknotes are sequentially stacked on the placing plate 105.
- projecting walls are formed on both side walls in the main body frame 100A so that when the mounting plate 105 is pressed by the urging means 106, the mounting plate abuts.
- the projecting wall applies both sides of the uppermost bill and stacks the bills to be laminated. Plays the role of holding stably.
- a pressing plate 115 is provided in the main body frame 100A to press the bills that have dropped from the receiving port 103 onto the pressing standby unit 108 toward the placement plate 105.
- the pressing plate 115 is configured to have a size that allows the opening formed between the pair of regulating members 110 to reciprocate. The position where the pressing plate 115 enters the opening and presses the bill against the placement plate 105. It is reciprocated between the (pressing position) and a position (initial position) where the pressing standby part 108 is opened. In this case, the banknote passes through the opening while being bent by the pressing operation of the pressing plate 115 and is mounted on the mounting plate 105.
- the pressing plate 115 is reciprocated as described above via the pressing plate driving mechanism 120 disposed in the main body frame 100A.
- the pressing plate driving mechanism 120 includes a pair of link members 115a and 115b whose both ends are pivotally supported by the pressing plate 115 so that the pressing plate 115 can be reciprocated in the direction of arrow A in FIGS.
- These link members 115a and 115b are connected in an X shape, and the opposite ends of the link members 115a and 115b are pivotally supported by a movable member 122 that is installed so as to be movable in the vertical direction (arrow B direction).
- a rack is formed on the movable member 122, and a pinion constituting the pressing plate driving mechanism 120 is engaged with the rack.
- a housing part side gear train 124 that constitutes the pressing plate drive mechanism 120 is connected to the pinion.
- a drive source (motor 20) and a main body side gear train 21 that sequentially meshes with the motor 20 are disposed in the apparatus main body 2 described above.
- the main body side gear train 21 is connected to the housing part side gear train 124.
- the accommodating portion side gear train 124 includes a gear 124B disposed coaxially with the pinion, and gears 124C and 124D that sequentially mesh with the gear 124B, and the bill accommodating portion 100 with respect to the frame 2A of the apparatus main body 2.
- the gear 124 ⁇ / b> D is configured to mesh with and separate from the final gear 21 ⁇ / b> A of the main body side gear train 21.
- the above-described pressing plate 115 is rotated by the motor 20 provided in the apparatus main body 2, so that the main body side gear train 21 and the pressing plate driving mechanism 120 (the accommodating portion side gear train 124, the movable member 122). And the link members 115a, 115b, etc.) are reciprocated in the direction of arrow A.
- the main body frame 100A is provided with a conveying member 150 that can come into contact with the bills carried from the receiving port 103.
- the conveying member 150 is in contact with the banknotes to be carried in and stably presses the banknotes in a proper position of the press standby unit 108 (when the banknotes are pressed by the pressing plate 115, the banknotes are not moved sideways and are stably pressed. It plays a role of guiding to a possible position).
- the conveying member is configured by a belt-like member (hereinafter referred to as a belt 150) installed so as to face the pressing standby unit 108.
- the belt 150 is installed so as to extend along the carry-in direction with respect to the banknote, and is wound around a pair of pulleys 150A and 150B rotatably supported at both ends in the carry-in direction. . Further, the belt 150 is in contact with an axially extending conveying roller 150C supported rotatably in the region of the receiving port 103, sandwiches the banknotes carried into the receiving port 103, and presses the banknotes as they are. The standby unit 108 is guided. Further, in the present embodiment, the belt 150 is provided in a pair of left and right so as to sandwich the above-described pressing plate 115 so as to be able to contact the surfaces of both sides of the bill. In addition to the winding of the pulleys 150A and 150B at both ends, the belt 150 may be applied with a tension pulley at an intermediate position to prevent looseness.
- the pair of belts 150 are driven by the motor 13 that drives the above-described plurality of conveying rollers installed in the apparatus main body 2.
- the above-described drive belt 13B driven by the motor 13 is wound around a pulley 13D for driving force transmission, and is used for power transmission that is sequentially installed on this pulley 13D.
- a gear train 153 installed at an end portion of a support shaft of a pulley 150A rotatably supported on the receiving port 103 side meshes with the gear train 13E.
- the input gear of the gear train 153 is engaged with the final gear of the gear train 13 ⁇ / b> E, and the pair of belts 150 are rotated by the motor 13.
- the motor 13 By driving, it is rotated integrally with the above-mentioned transport rollers 14B, 15B, 16B, and 17B for transporting banknotes.
- the banknote transport path 3 has a first transport path 3 ⁇ / b> A extending from the banknote insertion slot 5 toward the back side, and a first transport path 3 ⁇ / b> A extending downstream from the first transport path 3 ⁇ / b> A.
- the second conveyance path 3B has a shutter that prevents conveyance of banknotes toward the banknote insertion slot 5 due to fraud.
- a member 170 is installed.
- control means 200 for controlling the driving of the driving members such as the banknote transport mechanism 6 and the banknote reading means 8 will be described with reference to the block diagram of FIG.
- the control means 200 shown in the block diagram of FIG. 7 includes a control board 210 that controls the operation of each drive device described above. On the control board 210, the drive of each drive device is controlled and banknote identification is performed.
- a CPU Central Processing Unit
- ROM Read Only Memory
- RAM Random Access Memory
- operation programs for various driving devices such as the motor 13 for the bill transport mechanism, the motor 20 for driving the pressing plate, the motor 40 for the skew correction mechanism, the motor 70 for raising and lowering the rollers, and the authenticity determination unit 230
- Permanent data such as various programs such as an authentication program are stored.
- the CPU 220 operates according to the program stored in the ROM 222, inputs / outputs signals to / from the various driving devices described above via the I / O port 240, and performs overall operation control of the banknote processing device. . That is, the CPU 220 is connected to the banknote transport mechanism motor 13, the pressing plate driving motor 20, the skew correction mechanism motor 40, and the roller lifting motor 70 via the I / O port 240. The operation of these drive devices is controlled by a control signal from the CPU 220 in accordance with an operation program stored in the ROM 222. Further, detection signals from the insertion detection sensor 7, the movable piece passage detection sensor 12, and the discharge detection sensor 18 are input to the CPU 220 via the I / O port 240, and based on these detection signals. Thus, drive control of the various drive devices described above is performed.
- the CPU 220 receives a detection signal based on the transmitted light or reflected light of the light irradiated on the identification object from the light receiving unit 81 a in the bill reading means 8 described above via the I / O port 240. It has become.
- the RAM 224 temporarily stores data and programs used when the CPU 220 operates, and acquires and temporarily receives the received light data (image data composed of a plurality of pixels) of bills that are identification objects. It has a function to memorize.
- the authenticity determination unit 230 has a function of performing the first authenticity determination process and the second authenticity determination process for the banknote to be conveyed, and identifying the authenticity of the banknote.
- the authenticity determination unit 230 converts, for each pixel, received light data of an identification object stored in the RAM 224 into pixel information including color information (density value) having brightness, and the conversion Based on the pixel information converted by the unit 232, it is obtained from reflected light and transmitted light, such as specifying the print length of the conveyed banknote, or performing correction processing as described later based on the print length.
- a data processing unit 231 having a function of processing image data related to banknotes.
- the authenticity determination unit 230 includes a reference data storage unit 233 that stores reference data related to a genuine banknote, comparison data that has been subjected to various types of data processing on a banknote that is a target of authentication in the data processing unit 231, and a reference A comparison / determination unit 235 that compares the reference data stored in the data storage unit 233 and performs authenticity determination processing.
- the reference data storage unit 233 for example, image data related to the genuine banknote used when the first authenticity determination process described above is performed, and printing related to the authentic banknote used in the second authenticity determination process described above. A long reference value and allowable range data allowed from the reference value are stored.
- reference data is stored in the dedicated reference data storage unit 233, it may be stored in the ROM 222 described above.
- the reference value and the tolerance range data that are referred to at the time of comparison may be stored in the reference data storage unit 233 in advance. For example, a predetermined number of authentication values may be obtained as in a second authenticity determination process described later.
- a configuration may be used in which the received light data is acquired while the genuine note is conveyed through the bill conveyance mechanism 6, and a reference value and an allowable range are calculated therefrom and stored as reference data.
- the CPU 220 is connected to the first light emitting unit 80 a and the second light emitting unit 81 b in the bill reading means 8 described above via the I / O port 240.
- the first light emitting unit 80 a and the second light emitting unit 81 b are controlled to be turned on and off by the control signal from the CPU 220 via the light emission control circuit 260 in accordance with the operation program stored in the ROM 222 described above.
- the bill reading means 8 irradiates the bills conveyed by the bill conveyance mechanism 6 with light (red light, infrared light) from the first light emitting unit 80a and the second light emitting unit 81b.
- the transmitted light or reflected light is received by the light receiving unit (line sensor) 81a, and the bill is read.
- a large number of pieces of pixel information having a predetermined size as one unit for example, one pixel in the transport direction is 0.508 mm
- the image data constituted by a large number of pixels (a plurality of pixels) acquired in this manner is stored in a storage unit such as the RAM 224.
- image data composed of a large number of pixels stored here is converted into color information (brightness values from 0 to 255 (0: black to 255 depending on the density value)) for each pixel by the conversion unit 232. : White) is converted into information including the assigned color information).
- the image obtained by the line sensor into pixel information including color information (density value) having brightness by the conversion unit
- one side of the banknotes to be conveyed and the other side
- the print length For example, as illustrated in FIG. 8, when the banknote is transported (transported in the D1 direction), the density value of the pixel information becomes low in the printing area when the non-printing area is shifted to the printing area. Accordingly, by measuring the density value of the average pixel information in the width direction D2 and detecting the position where the pixel information is displaced by setting a threshold value, the printing length R (here, in the longitudinal direction) of a predetermined area is detected on both sides of the bill.
- the print area that can be the maximum length is used as the measurement target, but the measurement target is not limited to this. Any image or the like in the print area can be a target. It is preferable that the boundary between the non-printing area and the printing area (background and measurement target image) is clear. Moreover, the printing area
- the reference value and the allowable range are set based on a statistical viewpoint.
- Such setting of the reference value and the permissible range may be obtained by separately measuring a plurality of banknote print areas, and may be learned by measuring a plurality of print areas in advance using the apparatus. You may keep it. Further, after processing a predetermined period or the number of sheets, the reference value and the allowable range may be recalibrated.
- FIG. 9 shows an example of actual measurement data on one side of 50 genuine bills, and the length (X) is specified by the number of pixels (1 pixel; 0.508 mm).
- the average value ( ⁇ ) is obtained from the actual measurement data obtained in this way, and the deviation (X ⁇ ) of the printing area length of each bill is calculated, and its variance (average of (X ⁇ ) 2 ) Is calculated. Then, by obtaining the standard deviation ( ⁇ ) from the obtained variance, the allowable range can be set.
- the reference value of the bill printing area can be specified by specifying the average value ( ⁇ ) of a large number of genuine bills, whereby the reference value for the variation in the printing area can be specified. From the reference value, in this embodiment, a range of ⁇ 3 ⁇ is set as an allowable range. Of course, the allowable range can be arbitrarily set in consideration of the accuracy of counterfeit tickets.
- the average value ( ⁇ ) of the predetermined print length of 50 genuine bills that is, the reference value is 264.36
- the variance is 10.27
- the standard deviation is calculated as 3.20. Therefore, the average value and the standard deviation (unit is pixel) are stored in the reference data storage unit 233 as reference data (dictionary data).
- reference data is also executed for the other side, and for both sides of the bill, the reference value and allowable range regarding the print length are specified for a predetermined print area.
- FIG. 10 is a graph showing the dispersion state derived by the method as described above, and ( ⁇ ⁇ 3 ⁇ ) is set as the allowable range R1 with the reference value ( ⁇ ) as the center.
- the bill is determined to be authentic.
- the authenticity of the banknote is doubtful if the actual measurement data of one surface does not exist in the above-described allowable range R1, correction processing is performed on the actual measurement data of the back surface.
- the measured data is the point P1 in the graph of FIG. It is conceivable that it is in such a position.
- the measured data is located at such a point P1, it may be considered that the print length is shortened based on forgery.
- the correction value (r) of the surface is calculated.
- the surface correction value (r) can be derived, for example, by [1+ (L ⁇ ) / ⁇ ] (L; actual value of the printing area on the current surface, ⁇ ; printing area of the surface determined in advance) Average value).
- the actual measurement data on the back surface is obtained. If the correction value (r ′) for the actual measurement data for the back surface is within the preset allowable range R1 ( ⁇ ⁇ 3 ⁇ ) for the back surface, Evaluated as having contracted in the same manner as the surface, it is determined to be authentic. In this correction processing, if the correction value on the back surface deviates from the allowable range R1, it is determined to be fake.
- the printed area on the back surface has the same length as the printed area on the front surface and may have the same statistical value, but may have a different printed area length and a different statistical value (average, standard deviation, etc.). . Since the correction value (r ′) is normalized by the average value ⁇ , this correction value can be used as it is even when measurement objects having different lengths are selected.
- the correction process as described above may be performed when the measured data on one surface is outside the allowable range R1, but is below the allowable range R1 (region indicated by the point P1 in the graph of FIG. 10). You may make it carry out only when. That is, normally, it is considered that there is almost no case where the banknote expands and extends, so even if it is outside the allowable range R1, it is not less than the allowable range R1 (region indicated by the point P2 in the graph of FIG. 10). In such a case, it may be determined immediately that it is a fake. With this configuration, the correction process can be simplified.
- the transport roller pair (14A, 14B) installed in the vicinity of the bill insertion slot is in a separated state in the initial state (see ST16 and ST56 described later).
- the pressing plate 115 has a pair of link members 115a and 115b for driving the pressing plate 115 positioned in the pressing standby unit 108, and a bill is transferred from the receiving port 103 to the pressing standby unit 108 by the pair of link members 115a and 115b. It is set to a standby position where it cannot be loaded. That is, in this state, since the pressing plate 115 enters the opening formed between the pair of regulating members 110, the banknotes stored in the banknote storage unit cannot be extracted through the openings. It has become.
- the pair of movable pieces 10A constituting the skew correction mechanism 10 located on the downstream side of the transport roller pair (14A, 14B) has a minimum width (for example, a pair of movable pieces so that all bills cannot be pulled out in the initial state).
- the distance of 10A is 52 mm; see ST15 and ST57 described later).
- the operator can easily insert even a banknote with a hook.
- the motor 20 for driving the pressing plate 115 described above is reversely driven by a predetermined amount (ST02), and the pressing plate 115 is moved to the initial position. That is, until the insertion detection sensor 7 detects the insertion of the banknote, the pressing plate 115 is in a state of being moved to the opening formed between the pair of regulating members 110, and the opening is interposed through the opening.
- the bills are set so that they cannot pass through.
- the press standby section 108 When the pressing plate 115 is moved from the standby position to the initial position, the press standby section 108 is in an open state (see FIG. 4), and the banknote can be carried into the banknote storage section 100.
- the pressing plate 115 by rotating the motor 20 in a reverse direction by a predetermined amount, the pressing plate 115 has the main body side gear train 21 and the pressing plate driving mechanism 120 (the rack formed on the housing portion side gear train 124, the movable member 122, and the link member). 115a, 115b) to move from the standby position to the initial position.
- the above-described roller raising / lowering motor 70 is driven to move the upper conveyance roller 14A so as to contact the lower conveyance roller 14B. Thereby, the inserted banknote is clamped by the transport roller pair (14A, 14B) (ST03).
- the banknote transport path is opened (ST04).
- the release process is performed by driving the pair of movable pieces 10A in a direction away from each other by driving the skew correction mechanism motor 40 in the reverse direction (see FIG. 14).
- ST100 the movable piece detection sensor that detects the position of the pair of movable pieces 10A detects that the pair of movable pieces 10A has moved to a predetermined position (maximum width position) (ST101)
- the motor 40 is driven in reverse rotation. Is stopped (ST102).
- the bill can enter the pair of movable pieces 10A.
- the banknote transport path 3 is in a closed state by a transport path closing process (ST15, ST57) described later.
- the banknote transport path 3 is closed before the banknote is inserted.
- the element such as the line sensor from being damaged by inserting a plate-like member from the bill insertion slot for illegal purposes.
- the bill conveyance motor 13 is driven to rotate forward (ST05).
- the bill is transported into the apparatus by a pair of transport rollers (14A, 14B), and when the movable piece passage detection sensor 12 disposed downstream of the skew correction mechanism 10 detects the leading edge of the bill, the bill is transported.
- the motor 13 is stopped (ST06, ST07).
- the banknote is located between the pair of movable pieces 10 ⁇ / b> A constituting the skew correction mechanism 10.
- the roller raising / lowering motor 71 described above is driven to separate the pair of conveying rollers (14A, 14B) that are in a state of sandwiching the bill (ST08). At this time, the bill is not subjected to any load.
- skew correction operation processing is performed (ST09).
- This skew correction operation process is performed by driving the pair of movable pieces 10A in a direction approaching each other by driving the above-described skew correction motor 40 in a normal direction. That is, in the skew correction operation processing, as shown in the flowchart of FIG. 15, the pair of movable pieces 10A are moved in a direction approaching each other by driving the motor 40 in the normal direction (ST110). This movement of the movable piece is executed until the minimum width (for example, width 62 mm) of the banknote registered in the reference data storage unit in the control means is reached, whereby the banknote is moved by the movable piece 10A applied to both sides. The skew is corrected and positioned so as to be an accurate center position.
- the conveyance path opening process is subsequently executed (ST10). This is achieved by moving the pair of movable pieces 10A in the direction of separating by driving the skew correction mechanism motor 40 in the reverse direction (see ST100 to ST102 in FIG. 14).
- the roller raising / lowering motor 70 described above is driven to move the upper conveyance roller 14A so as to contact the lower conveyance roller 14B, and the bills are held between the conveyance roller pair (14A, 14B) (ST11).
- the bill conveyance motor 13 is driven to rotate forward to convey the bill toward the inside of the apparatus, and when the bill passes the bill reading means 8, the bill reading process is started (ST12, ST13).
- the four light sources consisting of the light sources for reflection are repeatedly turned on and off at regular intervals, and the lighting control is performed so that two or more light sources do not turn on at the same time without overlapping the phases of the light sources. . In other words, when a certain light source is turned on, lighting control is performed so that the other three light sources are turned off.
- the light of each light source is detected at regular intervals, and the transmitted light and reflected light of red light, the transmitted light and reflected light of infrared light are used. It is possible to read an image composed of grayscale data of the print area of the identification object.
- the closing process of the banknote conveyance path 3 will be performed (ST15).
- the motor 40 described above is driven to rotate forward, thereby a pair of movable pieces. 10A is moved in a direction approaching each other (ST130).
- the movable piece detection sensor detects that the movable piece 10A has moved to a predetermined position (minimum width position, for example, 52 mm) (ST131)
- the forward rotation drive of the motor 40 is stopped (ST132).
- the pair of movable pieces 10A are moved to the minimum width position (width 52 mm) narrower than the width of any bill that can be inserted, thereby effectively preventing withdrawal of the bill.
- the distance between the movable pieces 10A becomes narrower than the width of the inserted banknote, and the operator turns the banknote toward the insertion slot for improper purposes. It is possible to effectively prevent an action such as pulling out.
- a fraudulent operation signal (abnormality detection signal) is transmitted to a host device that manages the operation of the banknote processing apparatus, a notification lamp is provided in the banknote processing apparatus, and this is flashed, or the operator thereafter
- a process such as forcibly performing a discharge operation may be executed without validating the input reception process (ST22).
- you may make it perform appropriate processes, such as invalidating operation
- the roller raising / lowering motor 70 described above is driven to separate the conveyance roller pair (14A, 14B) that can hold the bills.
- a separation process is performed (ST16).
- the banknote transport motor 13 When the banknote reading means 8 reads data to the rear end of the banknote together with the above-described closing process of the banknote transport path, the banknote transport motor 13 is driven by a predetermined amount and the banknote is moved to a predetermined position (escrow position; At this time, the authentication data is stored in the reference data storage unit 233 in the authenticity determination unit 230 of the control unit 200 described above. With reference to the reference data, the comparison / determination unit 235 executes a bill authenticity determination process (ST17 to ST20).
- the first authenticity determination process described above is executed (ST150).
- the first authenticity determination process when the banknote is determined to be genuine (ST151; Yes), the following second authenticity determination process, that is, an authenticity determination process based on the print length is performed. If the bill is determined to be fake in the authenticity determination process 1 (ST151; No), it is determined to be fake without executing the second authenticity determination process (ST157).
- the bill reading means 8 detects the length of the predetermined print area on both sides of the bill (measured data on both sides) (ST152). Next, it is determined whether or not the actual measurement data of one surface (referred to as the surface) is within an allowable range R1 set on the surface as shown in the graph of FIG. 10, for example (ST153). If the measured data for one surface is within the allowable range R1 (ST153; Yes), the measured data for the other surface (back surface) is similarly set on the back surface as shown in the graph of FIG. It is determined whether or not it exists within the allowable range R1 (ST156). If the measured data on the other side is within the allowable range R1 (ST156; Yes), it is determined that the banknote is authentic (ST158).
- the value corrected for the actual measurement data on the back surface is within the preset allowable range R1 for the back surface, it is evaluated as being stretched in the same manner as the front surface and is determined to be authentic (ST156; Yes, ST158). On the other hand, in this correction process, if the corrected value of the back surface deviates from the allowable range R1, it is determined to be a fake (ST156; No, ST157).
- the banknote transport motor 13 When the banknote is transported in the processing of ST24, the banknote transport motor 13 is driven to rotate forward until the trailing edge of the banknote is detected by the discharge detection sensor 18, and the trailing edge of the banknote is detected by the discharge detection sensor 18. After that (ST25), the bill conveyance motor 13 is driven forward by a predetermined amount (ST26, ST27).
- the bill is carried into the receiving port 103 of the bill storage unit 100 from the discharge port 3a on the downstream side of the bill transport path 3 of the apparatus main body 2.
- the pair of belts 150 are in contact with both side surfaces of a bill to be carried in, and correspond to a driving amount that is stably guided to the press standby unit 108. That is, after the trailing edge of the banknote is detected by the discharge detection sensor 18, the pair of belts 150 come into contact with the banknotes to be carried in by further rotating the banknote transport motor 13 by a predetermined amount. While being driven in the feeding direction, the banknote is guided to the press standby unit 108 in a stable state.
- the banknote processing apparatus 1 having the above-described configuration, since the authenticity determination process based on the print length of the banknote is executed, the accuracy of the authenticity determination can be improved, and the authenticity determination process based on the print length is executed. At this time, even if the banknote is expanded or contracted, it is possible to accurately determine the authenticity.
- the print area is specified from both sides of the banknote, length information (actual measurement data) is acquired, and the authenticity of the banknote is corrected (if necessary, correction processing is performed). Is distinguished (second authenticity determination processing), and other configurations are not limited to the above-described embodiment. For this reason, about the specific identification method in the above-mentioned first authenticity determination process, the configuration of the bill reading means (may be a configuration other than the line sensor), and the mechanism for driving various driving members, as appropriate It is possible to deform.
- the length data acquisition method and the area (length) to be acquired can be appropriately changed.
- the configuration may be such that only the length data of the area where the banknote watermark is formed is acquired.
- various methods can be used for the allowable range of the actual measurement data of the print area and the setting method of the allowable range.
- a predetermined number of genuine bills are read by the bill reading means 8 and the reference value and the allowable range are derived from the image data of each read bill based on a statistical viewpoint.
- a reference value and an allowable range may be set and stored in the reference data storage unit.
- the permissible range that is permissible from the reference value serving as a reference for the length of the print area is stored in advance in the permissible range storage unit for each surface of the banknote. Yes. And when a banknote is actually inserted in a banknote processing apparatus, the said banknote reading means will acquire the reading data (measurement data) about the length of the printing area printed on both surfaces of the banknote. In this case, when the measured data on the length of the print area on one side of the banknote is out of the allowable range on the side, the length on the print area acquired on the other side based on the measured data. Correction processing is performed on the measured data. And since the actual measurement data corrected by this correction process is compared with the allowable range on the other surface stored in the allowable range storage unit and the authenticity determination process is executed, even if the banknote is stretched, However, accurate authentication can be performed.
- the measurement data of the length regarding the printing area of one side of the banknote acquired by the banknote reading means is within the allowable range on the surface, the measurement data is corrected for the other side. Instead, the authenticity determination process may be executed in comparison with the allowable range on the surface.
- the comparison / determination unit can execute the authenticity determination process when the measured data of the one surface is equal to or less than an allowable range on the surface.
- the measured data on the one surface may be below the allowable range on that surface.
- the other surface contracts at a similar rate, and in the above-described configuration, in such a case, the print acquired on the other surface based on the measured data on one surface
- the actual measurement data of the length related to the area is corrected, and the authenticity determination process of the banknote is executed. For this reason, when a banknote shrink
- the reference value can be obtained by extracting the lengths of the printing areas on both sides from a plurality of genuine banknotes and taking the average value of the lengths of the printing areas on each side.
- the authenticity determination method of the above-described embodiment includes an allowable range specifying step for specifying in advance an allowable range from a reference value that is a reference for the length of the print area for each surface of the banknote, and one of the banknotes.
- an allowable range specifying step for specifying in advance an allowable range from a reference value that is a reference for the length of the print area for each surface of the banknote, and one of the banknotes.
- the authenticity determination method of the above-described embodiment when the authenticity determination is performed, actual measurement data is acquired for each of the lengths of the print areas printed on both sides of the bill.
- the permissible range is specified in advance for each surface of the banknote from a reference value that is a reference for the length of the print area, and the actual measurement data on the length of the print area on one side of the banknote
- correction processing is performed on the actual measurement data on the length of the print area acquired on the other surface based on the actual measurement data.
- the corrected actual measurement data is compared with an allowable range on the other side stored in advance, and the authenticity determination process is executed. Therefore, even if the banknote is expanded or contracted, accurate authentication is performed. Is possible.
- the actual measurement data of the length obtained with respect to the printing area of one side of the banknote is less than the allowable range on the side
- the corrected actual measurement data on the other side obtained in the correction processing step is When it is within the allowable range on the surface, the bill can be determined to be authentic.
- the measured data on the one surface may be below the allowable range on that surface.
- the other surface contracts at a similar rate, and in the above-described configuration, in such a case, the print acquired on the other surface based on the measured data on one surface
- the actual measurement data of the length related to the area is corrected, and if the corrected actual measurement data is within the allowable range on the surface, the bill is determined to be authentic. For this reason, when a banknote shrink
- the actual measurement data of the length obtained with respect to the print area of one side of the banknote is within the allowable range on the side
- the actual measurement data of the length obtained with respect to the print area of the other side of the banknote is When it is outside the allowable range on the surface, the bill can be determined to be fake.
- the banknote is not expanded or contracted. For this reason, if the actual measurement data is outside the allowable range for the other surface, the banknote can be determined to be fake, so that it is not necessary to perform a correction process, and the authenticity determination process is simplified.
- the reference value serving as a reference for the length of the print area specified for each side of the banknote is obtained by extracting the length of the double-sided print area from a plurality of genuine banknotes, It can be determined by the average value.
- the first and second objects that are optically measurable reference lengths may be measured. For example, since these appear on the first surface and the second surface of the bill, respectively, the lengths of the first and second objects are measured in the first and second actual measurement steps, respectively.
- the second determination step it is determined whether the actually measured length in the second actual measurement step is within a predetermined allowable range (second allowable range) when it is within the allowable range.
- the first determination step is out of the allowable range
- the second actual measurement after the correction is performed through a correction step of correcting the actual measurement length in the second actual measurement step using a predetermined relationship.
- the second determination step it is determined whether the actually measured length in the process is within a predetermined allowable range compared with a predetermined reference value.
- the correction performs a proportional calculation between the first actually measured length and a reference length obtained in advance (average by a plurality of genuine bills).
- the second actually measured length is divided by this expansion / contraction ratio.
- the bill when it is determined in the second determination step that the bill is within the predetermined allowable range as compared with the predetermined reference value, the bill can be determined to be authentic.
- the length of the print region (or the first and second objects) is long, and an image or the like appearing in the longitudinal direction of the banknote is measured. It is preferable to make it a target.
- the present invention it is possible to obtain a banknote processing apparatus capable of accurately determining the authenticity even when the banknote is expanded and contracted, and an authenticity determining method used in such a banknote processing apparatus.
- the present invention can be incorporated into various devices that provide goods and services, for example, by inserting bills.
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Abstract
Description
2 装置本体
3 紙幣搬送路
5 紙幣挿入口
6 紙幣搬送機構
8 紙幣読取手段
10 スキュー補正機構
80 発光ユニット
80a 第1発光部
81 受発光ユニット
81a 受光部
81b 第2発光部
200 制御手段
Claims (10)
- 紙幣を読取る紙幣読取手段と、
紙幣の夫々の面毎に、印刷領域の長さの基準となる基準値から許容される許容範囲を記憶した許容範囲記憶部と、
前記紙幣読取手段により読取られた紙幣の一方の面の印刷領域に関する長さの実測データが、その面における前記許容範囲から外れていたとき、その実測データについて補正値を算出し、算出した補正値に基づいて他方の面の実測データを補正して、補正された実測データを前記許容範囲記憶部に記憶されている他方の面における許容範囲と比較して真贋判定処理を実行する比較判定部と、を有することを特徴とする紙幣処理装置。 - 前記比較判定部は、前記一方の面の実測データがその面における許容範囲以下となったときに、前記真贋判定処理を実行することを特徴とする請求項1に記載の紙幣処理装置。
- 前記基準値は、複数の真正な紙幣から両面の印刷領域の長さを抽出し、それぞれの面における印刷領域の長さの平均値であることを特徴とする請求項1又は2に記載の紙幣処理装置。
- 紙幣の夫々の面毎に、印刷領域の長さの基準となる基準値から許容される許容範囲を予め特定する許容範囲特定工程と、
紙幣の一方の面の印刷領域に関して得られる長さの実測データが、その面における前記許容範囲から外れていたとき、その実測データに基づいて他方の面で取得される印刷領域に関する長さの実測データについて補正処理を行う補正処理工程と、
前記補正処理工程で得られた他方の面の補正した実測データを、前記他方の面において予め特定されている許容範囲と比較して真贋判定処理を実行する比較判定工程と、を有することを特徴とする真贋判定方法。 - 前記紙幣の一方の面の印刷領域に関して得られる長さの実測データが、その面における前記許容範囲以下であり、前記補正処理工程で得られた他方の面における補正された実測データが、その面における前記許容範囲内にあるとき、その紙幣を真正と判別することを特徴とする請求項4に記載の真贋判定方法。
- 前記紙幣の一方の面の印刷領域に関して得られる長さの実測データが、その面における前記許容範囲内にあり、前記紙幣の他方の面の印刷領域に関して得られる長さの実測データが、その面における前記許容範囲外にあるとき、その紙幣を偽物と判別することを特徴とする請求項4に記載の真贋判定方法。
- 前記紙幣の夫々の面毎に特定される印刷領域の長さの基準となる基準値は、複数の真正な紙幣から両面の印刷領域の長さを抽出し、夫々の面における印刷領域の平均値によって決定されることを特徴とする請求項4から6のいずれか1項に記載の真贋判定方法。
- 光学的に測定可能な基準長さとなる第1及び第2の対象を第1の面及び第2の面にそれぞれ備える紙幣の真贋判定を行う方法において、
前記第1の対象の長さを測定する第1の実測工程と、
前記第2の対象の長さを測定する第2の実測工程と、
該第1の実測工程における実測長さが、所定の基準値と比較して所定の許容範囲内にあるかを判定する第1の判定工程と、
該第1の判定工程において許容範囲外とされた場合に、前記第2の実測工程における実測長さが所定の許容範囲内にあるかを判定する第2の判定工程と、
前記第1の判定工程において許容範囲外とされた場合に、所定の関係を用いて前記第2の実測工程における実測長さを補正する補正工程を経て、この補正後の前記第2の実測工程における実測長さが所定の基準値と比較して所定の許容範囲内にあるかを判定する第2の判定工程と、
前記第2の判定工程において、所定の基準値と比較して所定の許容範囲内にあると判定された場合に、その紙幣を真正と判別する真贋判定方法。 - 前記第1及び第2の実測工程は、紙幣を搬送しながら同時に行うことができる実測工程である請求項8に記載の真贋判定方法。
- 前記第1又は前記第2の対象の少なくとも何れかは、前記紙幣の長手方向に描かれている請求項8又は9に記載の真贋判定方法。
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