JP2914090B2 - Banknote recognition device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bill validating apparatus used for a vending machine or the like.

[0002]

2. Description of the Related Art A conventional bill validator will be described below with reference to the drawings.

FIG. 5 is a perspective view of a conventional bill validator, and FIG. 4 is a sectional view taken along line AA of FIG.

[0004] In FIGS. 4 and 5, reference numeral 1 denotes a bill insertion slot, and a bill passage 2 is connected behind the bill insertion slot 1. On the entrance side of the passage 2, an entrance side pulley 3 and an entrance side roller 4 facing the entrance side pulley 3 are provided. On the outlet side of the passage 2, an outlet pulley 5 and an outlet roller 6 facing the outlet pulley 5 are provided. At a substantially central portion of the passage 2, a magnetic sensor 7 for identifying the inserted bill and a magnetic sensor pressing roller 9 facing the magnetic sensor 7 are provided.
Is provided. Further, between the inlet-side pulley 3 and the outlet-side pulley 5, a transport belt 1 serving as a bill transporting means is provided.
0 is attached.

FIG. 6 is an enlarged view of a portion C in FIG. As shown in FIG.
Denotes a rotary roller, and 11 denotes a state in which the printing ink of the bill being transported adheres. Also, the magnetic sensor 7
There is a magnetic detection unit 8 at the center of FIG.

The operation of the above-structured bill validator will be described below. The bill inserted from the insertion slot 1 is transported in the bill passage 2 while being sandwiched between the transport belt 10 and the entrance-side roller 4. During this transport operation,
An optical sensor (not shown) and a magnetic sensor 7 detect optical information and magnetic information at a specific point on the bill, and a determination is made as to whether the bill is true or false. In particular, the magnetic sensor 7
Also detects magnetism away from the sensor surface,
The authenticity is determined by detecting magnetic information on both sides of the inserted bill. As a result of the determination using the sensor as described above, when the bill is identified as a genuine bill, the transport is continued to the bill exit, and when it is determined that the bill is not a genuine bill, the transport belt 10 is reversed at that time. And returned to the insertion slot 1.

[0007]

However, in such a conventional configuration, as the number of uses of a banknote increases,
When the printing ink 11 of the bill adheres to the surface of the magnetic sensor pressing roller 9 and the printing ink 11 contains a magnetic material, it has a great influence on the authenticity determination of the bill. The determination by the magnetic sensor 7 of the bill validator is performed by detecting the presence or absence of magnetism in the printed portion of the bill and the magnetic level. 7, there is a problem that as shown in FIG. 7, magnetic data is detected every rotation cycle of the roller 9 and accurate identification cannot be performed.
For this reason, in the banknote recognition device installed in the market, the surface of the magnetic sensor pressing roller 9 is frequently cleaned, and if the attached matter cannot be removed, the surface is replaced so that the recognition performance is maintained. It was necessary to plan.

The present invention solves such a problem, and a stable identification of bills is not affected by magnetic ink of the bills and magnetic stains such as paper dust of the bills accompanied by the magnetic ink. It is an object of the present invention to provide a bill validating device that can be used.

[0009]

In order to achieve this object, a bill discriminating apparatus according to the present invention comprises a holding plate for a magnetic sensor.
The pressing surface has a flat shape and the size of this flat portion
Is larger than the detectable distance from the magnetic detector of the magnetic sensor
That's bad.

[0010]

According to this structure, the magnetic sensor pressing plate has a flat contact surface with the magnetic sensor, so that the printing ink of the inserted bills adheres to the corner of the flat plate entrance of the pressing plate. Become. The size of the plane part is
Larger than the detectable distance than the magnetic detection part of the magnetic sensor
Printed on the flat part entrance.
Link is not detected by the magnetic detector. That is, magnetic
Stable banknotes can be identified without being affected by stains
You.

As described above, according to the present invention, it is possible to maintain the identification performance in a stable state for a long time.

[0012]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a perspective view of a bill validator according to one embodiment of the present invention, and FIG. 1 is a sectional view taken along line BB of FIG.

In FIGS. 1 and 2, reference numeral 21 denotes a bill insertion slot, and a bill passage 22 is connected to the back of the bill insertion slot 21. On the entrance side of the passage 22, an entrance side pulley 23 and an entrance side roller 24 are provided to face the entrance side pulley 23. On the outlet side of the passage 22, an outlet pulley 25 and an outlet roller 26 are provided to face the outlet pulley 25. A magnetic sensor 27 for identifying the inserted bill and a magnetic sensor pressing plate 29 facing the magnetic sensor 27 are provided substantially at the center of the passage 22. A transport belt 30 is mounted between the inlet pulley 23 and the outlet pulley 25 as a bill transport means.

FIG. 3 is an enlarged view of a portion D in FIG. In FIG. 3, a magnetic sensor 28 is provided at the center of the magnetic sensor 27. Also, the magnetic sensor holding plate 2
Reference numeral 9 denotes a vertically movable system which is urged by a spring from a vertical direction in which a rotation operation is not performed. Further, the grounding surface of the magnetic sensor 27 with the magnetic detection unit 28 is a flat surface. here,
The size of the flat portion of the magnetic sensor holding plate is set to be larger than the detectable distance (for example, 1 mm) from the magnetic detector 28.

The operation of the above-structured bill validator will be described below. In FIG. 1, when a bill is inserted from the bill insertion slot 21, the bill is transported by the transport belt 30. This transported bill is
By passing through the magnetic sensor 27, the true / false of the bill is identified. When the inserted bill is judged to be a genuine bill by the magnetic sensor 27, the bill is further conveyed by the conveyor belt 30 and carried out to the exit side of the passage 22 for the bill. When it is determined that the inserted bill is not a genuine bill, the entrance pulley 23 and the exit pulley 25 rotate in the reverse direction and are returned to the bill insertion slot 21 by the transport belt 30. Most of magnetic dirt such as the magnetic ink of the transported banknotes and paper dust accompanied by the magnetic ink adheres only to the end of the flat surface of the magnetic sensor pressing plate 29, and the flat portion of the magnetic sensor pressing plate 29. Hard to adhere to Moreover, even if the magnetic sensor press plate 29 adheres to the flat portion, a cleaning effect of removing the bill by the next inserted bill can be provided. Therefore, the magnetic detection unit 28 of the magnetic sensor 27 is not affected by the magnetic stain.

As described above, according to this embodiment, the magnetic sensor pressing plate 29 is of a vertically movable type, and the grounding portion of the magnetic sensor 27 with the magnetic detecting portion 28 is a flat surface, so that the transported bills can be It is possible to stably transfer bills for a long period of time without being affected by magnetic ink and magnetic stains such as paper dust accompanying the magnetic ink.

[0018]

As described above, as described above, the magnetic sensor press of the present invention is used.
Even the plate has a flat contact surface with the magnetic sensor
The printing ink on the inserted banknotes is
It will adhere to the corner at the entrance. Also, the flat part
Is the detectable distance from the magnetic detector of the magnetic sensor.
Because it is larger than the separation, it is attached to the corner at the entrance of the flat part.
The printed printing ink is not detected by the magnetic detection unit.
In other words, a stable banknote not affected by magnetic stains
Can be identified. Also, even if the flat part has magnetic stains
Even if it adheres, it can have a cleaning effect of being removed by the next inserted bill. Therefore, magnetism such as dirt does not affect the identification of banknotes, and maintenance such as cleaning may be performed periodically without frequent maintenance . Further, it is possible to use the magnetic sensor stably for a long time without replacing the magnetic sensor pressing plate.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a bill validator according to an embodiment of the present invention.

FIG. 2 is a perspective view of the bill validator.

FIG. 3 is an enlarged perspective view of a main part of the bill validator.

FIG. 4 is a cross-sectional view of a conventional bill validator.

FIG. 5 is a perspective view of the conventional bill validator.

FIG. 6 is an enlarged perspective view of a main part of the conventional banknote recognition device.

FIG. 7 is a diagram showing a magnetic data detection state when a magnetic substance adheres to the surface of a magnetic sensor pressing roller of the conventional banknote recognition device.

[Explanation of symbols]

 Reference Signs List 21 insertion slot 22 passage 27 magnetic sensor 28 magnetic detection unit 29 magnetic sensor holding plate 30 transport belt

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G07D 7/00 G07D 9/00

Claims (1)

(57) [Claims] 1. A bill insertion slot, a bill passage connected to the rear of the insertion slot, a conveying means and a magnetic sensor respectively provided on the passage, and a bill sensor provided opposite to the magnetic sensor. A magnetic sensor pressing plate for urging the bill toward the magnetic sensor, and an outlet provided at the end of the passage, wherein the pressing surface of the magnetic sensor pressing plate has a planar shape.
And the size of the flat part is the same as that of the magnetic sensor.
-A bill validator that is larger than the detectable distance from the magnetic detector .