JPH06126038A - Special prize for exchange for cash - Google Patents

Abstract

PURPOSE:To obtain a special prize for exchange for cash which enables the recording of secondary information necessary for a shop offering prizes in a reloadable manner while eliminating the possibility of forgery by arranging an optically recording alloy changing in color tone due to the thermal modification of crystal in layers on the surface of metal subjected to a magnetic transformation from non-magnetic to ferromagnetic state partially with a mechanical deformation. CONSTITUTION:In a special prize 10 for exchanging for cash, austenitic stainless steel undergoes a machining to form a prize member 20 and a protruding part 20A alone of the prize member 21 turned non-magnetic by a heat treatment is rolled to make a prize member 22 with the part alone turned ferromagnetic. Then, fouling, irregularities and the like are removed by surface grinding to form a thin film 24 of an optically recording alloy on the surface of a prize member 23 produced by surface decoration. Thus, a special prize 10 for exchanging for cash is produced. This will not allow the penetration into magnetic transformation even when the special prize for exchanging for cash is viewed from the surface thereof thereby making encoding impossible with a magnetic head or the like to achieve a very high security while enabling the entry of necessary information into the optically recording alloy in a reloadable manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cash exchange special gift to be given to a customer at a pachinko parlor, a game parlor or the like.

[0002]

2. Description of the Related Art Generally, pachinko balls and medals acquired by customers are exchanged for prizes (commodities) at amusement centers such as pachinko parlors and game stores, but among the prizes, special prizes that can be exchanged for cash are desired. Many customers do it. In this special gift for cash exchange, various items such as a fountain pen in a plastic case, a paperweight (thin metal) in a plastic case, etc. are used uniformly in each store or in a certain area. This special gift for cash exchange is taken to a prize exchange place separately and exchanged for cash in a predetermined ratio.

Recently, a prize exchange apparatus has appeared in which pachinko balls or the like are counted and a special prize for cash exchange corresponding to the counted value is automatically paid out to a customer.

[0004]

The special prize for cash exchange is exchanged with cash by a person in charge of the prize exchange visually, and if a large number of items are brought in at one time, a counting error may occur. When various kinds of special prizes for cash exchange with different values (amount of money) are used, the calculation amount of money for cash exchange was wrong. In addition, even if a fake gift in which the inner product was replaced was brought in while the outer case was still intact, it could not be reliably detected.

Further, a system in which cash can be automatically exchanged is disclosed in Japanese Patent Laid-Open No. 115381/1991. This is a magnetic tape attached to a special gift, and the magnetic tape is used when paying out the gift. Record the amount of money in
Since the amount of money on the magnetic tape is read by the cash exchange and the cash is paid out, there is a problem that the data can be easily tampered with by analyzing the information on the magnetic tape. Further, there is a problem in that even if the information is not tampered with, it cannot be found even if the information on the magnetic tape is copied and copied onto another magnetic tape and is attached to a fake special prize and used.

The present invention has been made in view of the above circumstances, and an object of the present invention is that it cannot be easily tampered with, cannot be counterfeited, and that secondary information necessary for issuing stores is required. For example, it is to provide a special gift for cash exchange in which the name of the issue store, the issue date, the expiration date, and the like can be rewritably recorded.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a special gift for cash exchange, and the above object of the present invention is to provide a surface of a metal which partially causes a magnetic transformation from non-magnetic to ferromagnetic by mechanical deformation. In addition, the present invention is achieved by providing a layered optical recording alloy whose crystal tone is changed by heat to change the color tone.

[0008]

The magnetic metal used in the present invention was previously described in Japanese Patent Application No. 2-
No. 227567, a stainless steel having a metastable austenite phase at room temperature, that is, an Md point of room temperature or higher and an Ms point of room temperature or lower. Then, at room temperature, mechanical deformation such as rolling, embossing and punching is applied to the austenitic stainless steel, whereby the non-magnetic austenite is transformed into ferromagnetic martensite. It is irreversible unless heated above a few hundred degrees Celsius.

FIG. 8 shows, as an example, a state in which the recess 2 of the austenitic stainless steel 1 is made ferromagnetic by pressing or embossing. In this way, magnetic recording of information such as the amount of money is performed by forming a ferromagnetic portion at an arbitrary portion on the cash exchange special prize.

The optical recording alloy is an alloy system in which the crystal structure is changed by heat treatment and the color tone at room temperature is reversibly changed. As described in the Japan Institute of Metals, Vol. 25, No. 8, pages 704-705. In addition, for example, an Ag-Zn alloy may have different crystal structures at room temperature, that is, a silver-white ζ phase and a pink β ′ phase. When the β'phase is aged at about 140 ° C, it changes to the ζ phase and changes from pink to silvery white.
At aging in the vicinity, the phase changes from ζ phase to β ′ phase again and returns to pink.

Therefore, the β'phase can be locally heated to about 40 ° C. by a laser, a thermal head or the like to induce local crystal transformation, and silver white characters can be printed on the pink substrate. This allows the customer to visually confirm the recorded contents. This record can be erased by heating to 290 ° C., and can be rewritten repeatedly at the issuing store.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the appearance of a cash exchange special prize 10 according to the present invention in a transparent case 11, and at a pachinko parlor, it enters the case 11 according to the number of pachinko balls won by a customer. The special gift 10 for cash exchange will be given to the customer. Here, the cash exchange special prize 10 is housed in a transparent case 11 having a resin, cloth, etc. 12 laid on the bottom thereof, and the number-of-balls data or the amount data recorded in the cash exchange special prize 10 is: It is magnetically read from the outside of the case 11 by a non-contact sensor. The ferromagnetic and non-magnetic patterns change depending on the value of the prize (for example, 200
Yen, 500 yen, 1000 yen, etc.). At this time, the pachinko parlor can clearly indicate the letter or number 13 on the optical recording alloy layered on the surface so that the customer can visually recognize it. In addition, the special gift 10 for cash exchange is not always transparent case 11
Need not be housed in

Next, the manufacturing process of the cash exchange special prize 10 will be described with reference to FIG. 2. The austenitic stainless steel as described above is machined to obtain the prize member 20 as shown in FIG. In this case, the position of the convex portion 20A determines the final position of ferromagnetism, and the difference in height of the convex portion 20A, that is, the difference in rolling rate during machining finally causes the difference in magnetism (magnetic strength). . Convex portion 20A
The higher the value, the higher the rolling ratio and the stronger the magnetism. Figure 2
At the time when the machining of (A) is completed, the entire surface or a part of the surface of the prize member 20 has been made ferromagnetic because of the machining, so the heat treatment makes it non-magnetic, that is, austenite (FIG. 2 ( State of B)). For the prize member 21 which has been made non-magnetic by heat treatment, only the convex portion is rolled to make it ferromagnetic.
The prize member 22 as shown in (C) is obtained. The shaded area in the figure indicates the portion that has been made ferromagnetic. And such FIG. 2 (C)
It is desirable that the free gift member 22 is surface-polished to remove stains (oil, oxide film, etc.), irregularities, etc., and finally finished by polishing so that residual strains such as electrolytic polishing and chemical polishing do not remain. After that, a thin film 24 of an optical recording alloy is formed on a required portion of the surface of the prize member 23 of FIG. 2D formed by surface decoration by a sputtering method or vapor deposition, and the cash as shown in FIG. Obtain a special prize 10 for exchange. The XX cross-sectional structure of the finally obtained cash exchange special prize 10 as shown in FIG. 2E is as shown in FIG.

As shown in FIG. 4A, the information recorded in the cash exchange special prize 10 according to the present invention is provided with a hall sensor 30 having a bias magnet attached above (or on the side of) the cash exchange special prize 10. However, since the signal MS as shown in FIG. 8B is output by moving either one relatively, it is possible to read it by binarizing this signal MS at a predetermined threshold TH0 and counting. . Actually, as shown in FIG. 5, a plurality of cases 11 containing the prize 10 are set up and relatively moved, and the Hall sensor array 31 reads them simultaneously. At that time, the prize 10
If the ferromagnetic and non-magnetic patterns are symmetrical in the left-right and up-down directions as shown in FIG. 5, the reading can be easily performed regardless of the direction of the case 11. Of course, reading is possible even if the pattern is not symmetrical in the left-right and up-down directions.

By the way, as described above, the magnitude of magnetism varies depending on the magnitude of the rolling ratio, and this phenomenon is shown in FIG. 6 (Journal of the Institute of Metals, Japan, Vol. 24, No. 6, 512-512).
See page 514). Therefore, multi-valued information can be recorded on the metal, and multi-valued information can be read by a plurality of thresholds TH1 and TH2 as shown in FIG. Note that reading can also be performed by a magnetoresistive sensor. Further, the information recorded on the optical recording alloy may be separately read by the optical reading means.

[0016]

As described above, according to the special gift for cash exchange of the present invention, a metal that causes a magnetic transformation from non-magnetic to ferro-magnetic by mechanical deformation is used, and the ferro-magnetic transformation is partially performed. The magnetic transformation cannot be detected even from the surface, and the security is extremely high because it cannot be encoded by a magnetic head or the like.

On the other hand, the optical recording alloy layered on the surface of the prize can be rewritably filled with the information necessary for the issuing store, and the customer can visually check the contents, which is useful for preventing troubles.

[Brief description of drawings]

FIG. 1 is an external view showing an embodiment of the present invention.

FIG. 2 is a diagram showing a manufacturing process.

FIG. 3 is a cross-sectional view taken along line XX of FIG.

FIG. 4 is a diagram showing an example of reading information according to the present invention.

FIG. 5 is a diagram showing an example of continuously reading data of a plurality of prizes using a Hall sensor array.

FIG. 6 is a diagram showing a change in magnetic permeability with respect to Ni equivalent.

FIG. 7 is a diagram for explaining reading of multi-valued information.

[Explanation of symbols]

 1 Austenitic stainless steel 2 Recess 10 Special gift for cash exchange 11 Transparent case 12 Resin, cloth, etc. 13 Letters or numbers 20 Machining member 21 Heat treatment member 22 Rolling member 23 Surface finishing member 24 Optical recording alloy layer 30 Hall sensor 31 Sensor array

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[Procedure amendment]

[Submission date] October 13, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Figure 8

[Correction method] Added

[Correction content]

FIG. 8 is a diagram showing magnetic transformation caused by mechanical deformation.

Claims (1)

[Claims] 1. An optical recording alloy layered on a surface of a metal, which partially undergoes a magnetic transformation from nonmagnetic to ferromagnetism by mechanical deformation, to cause a crystal transformation by heat to change a color tone. A special gift for cash exchange that is characterized.