JPS60220483A - Surface/back discriminator for paper money - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a cash sorting machine and a cash processing device that require a function to distinguish the front and back sides of banknotes.

[Background of the invention]

Conventionally, in order to distinguish between the front and back of a banknote in cash processing equipment, etc., the denomination is specified in advance using a switch, etc., or the denomination is discriminated in advance of distinguishing between the front and back, and the denomination information is obtained. A method has been used to detect the patterns on both the front and back sides of banknotes and to distinguish between the front and back by utilizing the fact that the pattern at a specific position is a front and back tool depending on the denomination. This method has the effect of simplifying the sensor for measuring the front and back sides of banknotes and shortens the time required for identification processing, and is therefore an effective means.

However, in the case of an apparatus that handles a plurality of banknotes having widely different sizes, the width of the conveyance path is adjusted to be equal to or larger than the maximum banknote size, which increases the positional variation of banknotes with dimensions smaller than the maximum banknote size.

Therefore, it becomes difficult to measure a pattern only at a specific position using a sensor placed at a fixed position. Therefore,
Since it is necessary to measure a wide range of patterns, detect positional deviations, select a pattern at a specific position, and distinguish between front and back, the disadvantage is that the advantages of a simpler sensor and shorter discrimination processing time are lost. there were.

[Purpose of the invention]

An object of the present invention is to provide a structure for a banknote front/back identification device that still has the advantages of simplifying the sensor and shortening the processing time described above.

[Summary of the invention]

In order to achieve the object, the present invention utilizes conventional denomination discrimination results, and also utilizes information on the positional deviation and watermark position of banknotes to realize front and back discrimination.

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[Embodiment J of the invention The present invention will be explained below using examples.

FIG. 1 shows an embodiment of the device configuration of the present invention.

The banknote 7 is conveyed in the direction of the arrow in the figure, and the detector mounting base 6a is
and 6b. In the discrimination procedure, first, the denomination is discriminated by the denomination discrimination section 1, and the denomination information 1a is transmitted to the front/back discrimination processing section 11. Based on this denomination information, the front and back discrimination processing section can select the size of the banknote. Next, the positional deviation detection unit 2 of the banknote detects the positional deviation in the direction perpendicular to the banknote transport direction, and the front/back discrimination processing unit 11 takes in the positional deviation information 2a. Next, the watermark position detection unit 3 detects whether the watermark position is on the left or right side of the center of the conveyance path, and the watermark position information 6α is detected.
The front/back discrimination processing unit 11 takes in the information. The front and back discrimination processing section 11 can determine at which position on the banknote the front and back pattern detection section 4 or 5 has detected the pattern from the nine denomination information, the positional deviation information, and the mark position information. therefore,
The front and back discrimination processing unit 11 can distinguish between the front and back sides by examining part of the difference between the patterns of the outputs 4α and 5α of the front and back pattern detection units 4 and 5, thereby reducing the time required for multiple processes. In this embodiment, the denomination discrimination unit 1 is used as a means for obtaining denomination information, but if the device including this front/back determination device is capable of specifying the denomination by an operator's switch etc., the denomination discrimination section 1 is not necessarily used. Part 1 is not required. Further, for convenience of explanation, the order in which the detection units are arranged in the banknote transport direction is described, but the arrangement order is not specified as long as the front/back discrimination processing unit 11 executes the processing after all the information from each detection unit has been taken in.

FIG. 2 shows an embodiment of the banknote misalignment detection section. The light receiving section 8 includes an image sensor 8a, an optical system 8b, and the like, and is configured to receive light from the light emitting section 10. This positional deviation detection unit is fixedly installed at a position where a part of the edge of the banknote is shielded from light when the banknote 7 passes. Therefore, the positional shift of the banknote 7 can be detected by the length of light blocking.

FIG. 3 shows an embodiment of the watermark position detection unit for banknotes. The watermark position detection unit detects the posture of the banknote (front and back).

Even if the left and right) are different, the detection parts 3Q, 57, 3
Arrange so that one of A passes through the watermark position.

The watermark detection method is realized by a configuration in which the light passing through the bill is detected by the light receiving section 5C and the light emitting section 6h, as shown on the right in FIG. judge. In this embodiment, the watermark portion is detected by the amount of transmitted light, but it is also possible to detect the color tone or the ink material for printing.

FIG. 4 shows an embodiment of the front and back pattern detection units 4 and 5. Detecting units 4 and 5 are light emitting units 4C and 5C, respectively.
It has a structure in which it has a light receiving section 4d or 5d and detects the amount of reflected light from the banknote 7.

In addition, in the present invention, if there is a watermark in the center of the banknote, it is impossible to identify the pattern position due to the misalignment between the watermark position and the banknote. In many cases, it is possible to distinguish between front and back without specifying the dust or pattern position b0 [Effects of the Invention] According to the present invention, by combining detectors each having a relatively simple structure, positional deviation can be detected. It is possible to distinguish the front and back sides of banknotes in a large conveyance system, and an economical device configuration is possible.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the apparatus of the present invention, FIG. 2 is a partial diagram of a positional deviation detection section, FIG. 3 is an explanatory diagram of a watermark position detection section, and FIG. 4 is a front and back pattern detection section. FIG. 1. Denomination discrimination section, 2. Position shift detection section, 6. Watermark position detection section, 4.5. Front and back pattern detection section, 7. Banknote, 11. Front and back discrimination processing section. Representative Patent Attorney Akio Takahashi 1 Figure! ! Box Z, Figure 3 (cL) (b) χ4 diagram

Claims (1)

[Claims] 1. A means for outputting denomination information, a means for detecting the watermark position, a means for detecting positional deviation in the conveyance path of the banknote, and a means for detecting the reflected light pattern on both sides of the banknote are provided. Features: A device for distinguishing the front and back sides of banknotes.