JP3013327U - prepaid card - Google Patents

Abstract

(57) [Summary] [Purpose] A prepaid card provided with anti-counterfeiting means. [Structure] A fluorescent ink 3 whose excitation light wavelength and fluorescent wavelength are in the infrared region and an infrared absorbing ink 4 which absorbs light of the fluorescent wavelength do not overlap each other on the surface of the card substrate 2. As described above, the concealing layer 5 that transmits the excitation light wavelength and the fluorescence wavelength and absorbs part of the visible light is provided in parallel.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a prepaid card provided with anti-counterfeiting means.

[0002]

[Prior art]

 Conventionally, various means have been proposed in which a prepaid card that is used as a payment method in place of cash is provided with a forgery prevention means to identify whether or not this card is forged.

For example, a card such as a magnetic card is provided with a forgery-preventing or identifying mark or bar code that is optically readable in the visible light region, and is optically read to identify the presence or absence of forgery. Is proposed.

[0004]

[Problems to be solved by the device]

 According to the conventional technology, even if it is invisible, by scanning the existing infrared reflective photo coupler on the card, it is possible to easily find the mark or bar code for anti-counterfeiting or identification. There was a problem that it would end up.

The present invention has been made in view of the above problems, and an object of the present invention is to use a fluorescent ink and an infrared absorbing ink that absorbs a fluorescent wavelength in combination, and to use a complex light having positive and negative peaks. It is possible to generate a signal, make it extremely difficult to forge a prepaid card that is the same as a regular prepaid card, and provide a prepaid card with a new structure that enables highly reliable detection.

[0006]

[Means for Solving the Problems]

 The present invention relates to a substrate, and a fluorescent ink containing a phosphor in which the wavelengths of the excitation light and the fluorescence wavelength are respectively in the infrared region, which are arranged in parallel on at least one surface of the substrate. An infrared absorbing ink that absorbs light of the fluorescent wavelength, and a concealing layer that allows the wavelength of the excitation light and the fluorescent wavelength to pass therethrough and that also absorbs part of visible light are provided. It is a thing.

Further, the fluorescent ink and the infrared absorbing ink are arranged side by side as a barcode pattern.

[0008]

[Action]

 A base material, a fluorescent ink containing a phosphor in which at least one of the surfaces of the base material is arranged in parallel so as not to overlap with each other, and the excitation light wavelength and the fluorescence wavelength are in the infrared region; Fluorescent ink on a prepaid card provided with an infrared absorbing ink that absorbs light of a wavelength and a concealing layer that can transmit the wavelength of the excitation light and the fluorescent wavelength on the surface of the base material and absorb a part of visible light. It is possible to generate a complex optical signal composed of fluorescence and reflected light accompanied by absorption of the fluorescence wavelength by irradiating the excitation light with the light generating the fluorescence wavelength.

[0009]

【Example】

 An embodiment of the prepaid card of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the prepaid card of the present invention. A region A on one surface of the card substrate 2 contains a fluorescent material having both excitation wavelength and fluorescence wavelength in the infrared region. A bar code 3 for preventing forgery or identification formed by using fluorescent ink and a bar code 4 formed by infrared absorbing ink that absorbs the fluorescent wavelength of the fluorescent ink are separated from each other so as not to overlap each other. Are arranged side by side.

Further, similarly, a bar code 4 made of infrared absorbing ink and a bar code 3 made of fluorescent ink are juxtaposed. The card substrate 2 provided with these barcodes 3, 4, 4 and 3 has the property of transmitting both the excitation wavelength and the fluorescence wavelength and absorbing a part of visible light. The masking layer 5 is provided with a masking ink having opacity so that the codes 3 and 4 cannot be visually confirmed, and thus the prepaid card 1 is configured.

Referring to FIG. 2, the prepaid card identifying means of the present invention will be described. The prepaid card 1 is carried by a carrier device (not shown), and excitation light emitted from a light emitting element and light having a fluorescent wavelength emitted from the light emitting element are described. When and are illuminated from the left side of the same area A of the prepaid card 1 in the figure, the prepaid card 1 starts scanning, the sequential bar codes 3, 4, 4, 3 are scanned, and the light from the prepaid card 1 receives light. Is incident on.

From the light receiving element, voltage values of three levels are output according to the time when the light scans the bar codes 3 and 4. Then, these voltage values are input to a discriminating circuit (not shown), and the presence or absence of a positive or negative peak value is detected by this circuit so that the proper prepaid card can be identified.

[0013]

[Effect of device]

 As described above, according to the present invention, the base material and the excitation light wavelength and the fluorescence wavelength, which are arranged in parallel on at least one surface of the base material, do not overlap each other in the infrared region. Fluorescent ink containing a fluorescent substance, an infrared absorbing ink that absorbs the light of the fluorescent wavelength, and a wavelength of the excitation light and the fluorescent wavelength that can be transmitted to the surface of the base material and absorb a part of the visible light. And a concealing layer that can be used.

The fact that the card is provided with a fluorescent ink and an infrared absorbing ink that absorbs the fluorescent wavelength side by side, and that it is irradiated with the excitation light of the phosphor and the light that emits the fluorescent wavelength, and the card Therefore, it is extremely difficult to forge a card that is the same as a legitimate card, as long as there is no recognition that fluorescence and reflected light accompanied by absorption of the fluorescence wavelength are generated.

Further, since the light in the infrared region is used, it is possible to detect a signal with a high degree of reliability regardless of dirt on the surface of the card.

[Brief description of drawings]

FIG. 1 is a top view of an embodiment of a prepaid card of the present invention.

FIG. 2 is a sectional view of the prepaid card of FIG.

[Explanation of symbols]

1 Prepaid Card 2 Card Base Material 3 Bar Code Formed with Fluorescent Ink 4 Bar Code Formed with Infrared Absorbing Ink That Absorbs Fluorescent Wavelength 5 Concealment Layer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G06K 19/00 19/06 19/10 G06K 19/00 R

Claims (2)

[Scope of utility model registration request] 1. Fluorescence containing a base material and a phosphor in which at least one surface of the base material is arranged in parallel so as not to overlap with each other, and the wavelength of the excitation light and the fluorescence wavelength are in the infrared region, respectively. Ink, an infrared absorbing ink that absorbs light of the fluorescent wavelength, and a concealing layer that can transmit the wavelength of the excitation light and the fluorescent wavelength on the surface of the base material and that can absorb part of visible light. A prepaid card characterized by being configured. 2. The prepaid card according to claim 1, wherein the fluorescent ink and the infrared absorbing ink are juxtaposed as a bar code pattern.