JP2940883B2 - Special gifts for cash exchange - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In general, pachinko balls and medals are exchanged for prizes (goods) at amusement arcades such as pachinko parlors and game stores. Of these prizes, special prizes that can be exchanged for cash are desired. Many customers do. This special gift for cash exchange uses various items such as a fountain pen in a plastic case and a paperweight (thin metal) in a plastic case in a unified manner in each store or in a certain area. The special prize for cash exchange is separately taken to a prize exchange hall, where the prize is exchanged for a predetermined ratio of cash.

[0003] Recently, a prize exchange apparatus that counts pachinko balls and the like and automatically pays out special prizes for cash exchange according to the counted value to customers has also appeared.

[0004]

The exchange of special prizes for cash exchange for cash is judged visually by a staff at the prize exchange hall, and if a large number are brought in at once, counting errors may occur. When various kinds of special gifts for cash exchange having different values (amounts) are used, the calculation of the cash amount has occurred. In addition, in some cases, counterfeit prizes in which the contents of the case were replaced with the outer case as it was could not be reliably detected.

Further, Japanese Patent Laid-Open Publication No. 1-115381 discloses a system in which cash can be automatically exchanged. A magnetic tape is affixed to a special prize, and the magnetic tape is used when a prize is paid out. And record the amount
Since cash is paid out by reading the amount of money on the magnetic tape with a cash exchange, there is a problem that the data is easily falsified by analyzing the information on the magnetic tape. Further, there is also a problem that even if the information is not falsified, the information on the magnetic tape is copied and copied to another magnetic tape, and the information cannot be found even if the information is attached to a fake special prize and used.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent falsification, forgery, and secondary information necessary for an issuer, For example, it is an object of the present invention to provide a special gift for cash exchange in which the name of an issue store, an issue date, an expiration date, and the like can be rewritably recorded.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a special prize for cash exchange, and an object of the present invention is to provide a metal surface which has undergone a partial magnetic transformation from non-magnetic to ferromagnetic by mechanical deformation. In addition, the present invention is attained by a prize including a layer of an optical recording alloy which changes its color tone by causing a crystal transformation by heat.

[0008]

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

FIG. 8 shows a state in which the recess 2 of the austenitic stainless steel 1 is made ferromagnetic by pressing or embossing as an example. By forming a ferromagnetic portion on an arbitrary portion of the special prize for cash exchange in this manner, information such as the amount of money is magnetically recorded.

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 can have different crystal structures of a silver-white ζ phase and a pink β ′ phase at room temperature. When the β 'phase is aged at about 140 ° C, it changes to the ζ phase and changes from pink to silver-white, and further 290 ° C
At around aging, the phase changes from the ζ phase to the β 'phase again and returns to pink.

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

[0012]

FIG. 1 shows the appearance of a special gift 10 for cash exchange according to the present invention in a transparent case 11. In the pachinko parlor, the customer enters the case 11 according to the number of pachinko balls obtained by a customer. The special prize 10 for cash exchange will be given to the customer. Here, the special prize 10 for cash exchange is housed in a transparent case 11 having a resin, cloth 12 or the like laid on the bottom, and the ball number data or the amount data recorded on the special prize 10 for cash exchange is It is magnetically read from the outside of the case 11 by a non-contact sensor. The ferromagnetic and non-magnetic patterns are changed according to the value of the prize (for example, 200
Yen, 500 yen, 1000 yen, etc.). At this time, the pachinko parlor can clearly indicate the characters or numerals 13 on the optical recording alloy layered on the surface so that the customer can see it. The special gift 10 for cash exchange is not necessarily a transparent case 11.
It does not have to be accommodated in

Next, the manufacturing process of the special prize 10 for cash exchange will be described with reference to FIG. 2. The austenitic stainless steel as described above is machined to obtain a prize member 20 as shown in FIG. In this case, the final ferromagnetic position is determined by the position of the projection 20A, and the difference in magnetism (magnetic strength) finally occurs due to the difference in height of the projection 20A, that is, the difference in the rolling ratio in machining. . Protrusion 20A
The higher the value, the higher the rolling ratio and the stronger the magnetism. FIG.
At the point of time when the machining of (A) is completed, the entire surface or a part of the prize member 20 is ferromagnetic due to the machining, so that it becomes non-magnetic, that is, austenite by the heat treatment (FIG. 2 ( B) state). FIG. 2 shows that the prize member 21 that has been demagnetized by the heat treatment is subjected to rolling only the protruding portion to make only that portion ferromagnetic.
A premium member 22 as shown in FIG. The hatched portions in the figure indicate the ferromagnetic portions. Then, FIG. 2 (C)
It is desirable that the surface of the premium member 22 is removed by polishing to remove dirt (oil, oxide film, etc.), irregularities, etc., and finally finished by polishing such as electrolytic polishing, chemical polishing or the like so that no residual strain remains. Thereafter, a thin film 24 of an optical recording alloy is formed on a required portion on the surface of the premium member 23 shown in FIG. 2D by sputtering or vapor deposition, and the cash as shown in FIG. Obtain a special prize 10 for replacement. The XX cross-sectional structure of the finally obtained special prize 10 for cash exchange as shown in FIG. 2E is as shown in FIG.

As shown in FIG. 4A, the information recorded in the special gift 10 for cash exchange according to the present invention is provided with a hall sensor 30 having a bias magnet attached above (or on the side of) the special gift 10 for cash exchange. A signal MS as shown in FIG. 3B is output by relatively moving any one of them, so that the signal MS can be read out by binarizing it at a predetermined threshold TH0 and counting it. . Actually, as shown in FIG. 5, a plurality of cases 11 containing the prizes 10 are set up and relatively moved, and read by the Hall sensor array 31 simultaneously. At that time, giveaway 10
By making the ferromagnetic and non-magnetic patterns symmetrical left and right as shown in FIG. 5, reading can be easily performed regardless of the direction of the case 11. Of course, it is possible to read even if the pattern is not symmetrical left and right.

By the way, as described above, the magnitude of the magnetism varies depending on the magnitude of the rolling reduction, and this phenomenon is shown in FIG. 6 (Journal of the Japan Institute of Metals, Vol. 24, No. 6, 512-512).
514). Thus, multi-valued information can be recorded on the metal, and as shown in FIG. 7, multi-valued information can be read at a plurality of thresholds TH1 and TH2. Note that reading is also possible with a magnetoresistive sensor. Further, information recorded on the optical recording alloy may be separately read by optical reading means.

[0016]

As described above, according to the special prize for cash exchange of the present invention, a metal which undergoes magnetic transformation from non-magnetic to ferromagnetic by mechanical deformation is partially ferromagnetically transformed. However, even when viewed from the surface, magnetic transformation cannot be detected, and encoding cannot be performed by a magnetic head or the like, so that security is extremely high.

On the other hand, in the optical recording alloy layered on the surface of the prize, information necessary for the issuing store can be rewritten, and the contents can be visually checked by the customer, which helps to prevent occurrence of trouble.

[Brief description of the drawings]

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

FIG. 2 is a view showing a manufacturing process.

FIG. 3 is a 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 illustrating an example in which data of a plurality of prizes is continuously read 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-value information.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Austenitic stainless steel 2 Concave part 10 Special prize for cash exchange 11 Transparent case 12 Resin, cloth, etc. 13 Character or numeral 20 Machined member 21 Heat treatment member 22 Rolled member 23 Surface finishing member 24 Optical recording alloy layer 30 Hall sensor 31 Sensor array

Claims (1)

(57) [Claims] 1. An optical recording alloy which changes its color tone by causing a crystal transformation by heat on a surface of a metal which has undergone a magnetic transformation from non-magnetic to ferromagnetic due to mechanical deformation. A special gift for cash exchange characterized by the following.