JPH10882A - Magnetic card with IR barcode - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable concealment of a barcode without applying camouflage by a character pattern, and concealment with a particularly thin concealment layer. A magnetic card having an IR barcode, in which a magnetic layer 2, a base hiding layer 3, a barcode 4, a barcode hiding layer 8 containing a mat material and a white hiding layer 6 are sequentially stacked on a card substrate 1. . In addition, a magnetic layer 2, a base hiding layer 3, a bar code 4 having the same thickness and the same color filler 9 sandwiched between pieces, a bar code hiding layer 8 containing a mat material, and a white hiding layer 6 on a card base material Are constructed in such a manner that
Magnetic card with R barcode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic card in which a bar code concealing layer using an IR transmitting ink is formed on an IR absorbing bar code.

[0002]

2. Description of the Related Art FIG. 4 schematically shows a cross section of a conventional magnetic card of this type.
And an underlayer hiding layer (also referred to as a silver layer) 3 in order, an IR-absorbing barcode 4 is printed thereon, and a barcode hiding layer 5 is formed using an IR-permeable black ink so as to cover the barcode. Is printed, and a white hiding layer 6 having IR transparency is printed. Here, the barcode hiding layer 5
And the total thickness of the white hiding layer 6 is about 10 μm.
However, since the concealing property is insufficient as it is, a character pattern 7 made of transparent ink for camouflage is further printed on the white concealing layer 6.

[0003]

Conventionally, in this type of magnetic card, as described above, in order to compensate for the lack of concealing ability remaining even when the bar code concealing layer 5 and the white concealing layer 6 are printed for a total of about 15 μm. Although the camouflage is applied by using the character print 7, the manufacturing process for applying the character print is not preferable because it leads to a considerable increase in man-hours, that is, an increase in cost.

On the other hand, in this type of card, it is necessary to make the total thickness of the bar code concealing layer and the white concealing layer as small as possible in order to manufacture a particularly fine card. Barcodes require a certain thickness, even if they are minute, so if the concealment layer is made thinner, there will be a step due to the presence or absence of barcode printing, and the barcode will be more clearly identified depending on the angle of card observation. was there.

Accordingly, the present invention provides a magnetic card in which the total film thickness is suppressed to 15 μm or less and camouflage by a character pattern is not required, and the magnetic film in which the total thickness of the bar code concealing layer and the white concealing layer is particularly thin is provided. Try to offer a card.

[0006]

According to the present invention, there is provided an IR-absorbing bar code comprising a magnetic layer, a base concealing layer, a large number of spaced pieces on a card substrate, In a magnetic card having a barcode hiding layer using ink and an IR-transparent white hiding layer sequentially stacked, the barcode hiding layer is a matted barcode hiding layer. A magnetic card having a code is obtained.

According to the present invention, there is provided an IR-absorbing barcode comprising a magnetic layer, a base concealing layer, a large number of spaced pieces on a card substrate, and a bar using IR-permeable ink. In a magnetic card in which a code concealing layer and an IR-transparent white concealing layer are sequentially stacked, a portion of the base concealing layer where the barcode element is not formed is the same as the element having IR transparency. A magnetic card having an IR barcode is obtained, wherein the magnetic card has a thickness and a filling layer of the same color system is formed.

[0008]

According to the first aspect of the present invention, the printing surface is matted, so that the IR absorbing portion and the I
There is no change in the IR reflectance of the R reflection section. Further, in the second aspect, even if the concealing layer is particularly thin, it is possible to eliminate the color difference and the film thickness difference due to the presence or absence of the barcode.

[0009]

FIG. 1 is a sectional view schematically showing the structure of a magnetic card according to a first embodiment of the present invention. FIG.
1, 1 is a card base, 2 is a magnetic layer, 3 is a base concealment layer for reflecting infrared rays, 4 is an IR-absorbing barcode, 8 is an IR-permeable black ink mixed with silica powder as a mat material. A bar code concealed layer containing a mat material printed by screen printing, and 6 is a white concealed layer having IR absorption.

Table 1 below shows the IR on the bar code 4 printed.
The results of visually observing the opacity of the barcode when the barcode concealment layer 8 containing the matte material of the transparent black ink is printed by changing the mixing ratio of silica are shown. The silica mixing ratio shows the results of printing at four levels of silica: 0, 5, 10, and 15 parts by weight with respect to 100 parts by weight of the solid content after drying the IR-permeable black ink. In this embodiment, the amount of silica added is I
When the solid content of the R-permeable black ink is 100 parts by weight or more, the bar code is almost completely hidden when the amount is 10 parts by weight or more.

[0011]

[Table 1]

FIG. 2 is a diagram showing the results of measuring these four-level samples with a Macbeth reflectometer D filter. From this result, it can be seen that the silica 1
It can be seen that, even with the sample of 0 parts by weight or more, the value slightly increased but did not change so much as compared with the measured values of the IR reflection part and the IR absorption part of the sample of 0 part by weight of silica. Also, the thickness of the barcode concealing layer 8 containing the mat material is 5 to 6 μm, and it can be seen that the concealing property is more improved with a thinner film thickness than the conventional one. Further, after printing the white hiding layer 6, the hiding property of the barcode is improved, and the barcode can be sufficiently hidden even without a character pattern. In addition, when the IR permeable ink containing the mat material is used even when printing the white hiding layer,
The concealment is further improved.

FIG. 3 is a view showing a cross section of a magnetic card according to a second embodiment of the present invention. A magnetic layer 2, a base hiding layer 3, and a bar code 4 composed of a large number of pieces on a card base 1.
, And then an IR between the bar code segments.
An ink of the same color as the bar code 4 is printed with transparency to form a filling layer 9 having a height almost equal to that of the bar code, and then a bar code concealing layer 5 printed with screen printing of IR transparent black ink, IR absorption Opaque white opaque layer 6. Thus, even when printing the barcode concealment layer 5 is thin, it is possible to improve the concealment of the barcode by eliminating the color difference and the film thickness difference depending on the presence or absence of the barcode. In this case, when the character pattern 7 is further provided as shown in the figure, and the barcode hiding layer 8 containing the mat material is used as the barcode hiding layer 5 in the same manner as in the first embodiment, particularly excellent. You can get the concealment.

[0014]

According to the present invention, the bar code concealment layer is made matte, so that the reflectance of the bar code concealment layer printed by the conventional method can be reduced by the IR reflection part and the IR absorption part of the bar code. When the reflectance of the bar code concealing layer 8 containing the mat material is 5 to 6 μm, the concealment becomes sufficiently possible with the reflectance having almost no difference from the value. In addition, the character pattern required for the conventional card is no longer required, and the number of processes and the price can be reduced.

Further, by printing the same color ink as the bar code with the same level of IR transparency between the bar codes, the bar code concealing layer can be concealed by printing the bar code concealing layer thinner than the conventional film thickness. Was able to be improved.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a magnetic card having a barcode according to a first embodiment of the present invention.

FIG. 2 shows a Macbeth reflectometer D-filter which measures the reflectance of a barcode IR reflection portion and an IR absorption portion when a silica is mixed in a barcode concealing layer of IR-transparent black ink. The figure which showed and compared with the result measured in.

FIG. 3 is a schematic sectional view of a magnetic card having a barcode according to a second embodiment of the present invention.

FIG. 4 is a schematic sectional view of a conventional magnetic card having a bar code.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Card base material 2 Magnetic layer 3 Base concealment layer (silver layer) 4 Barcode 5 Barcode concealment layer 6 White concealment layer 7 Character crest 8 Barcode concealment layer with mat material 9 Filling layer

Claims (2)

[Claims] A magnetic layer, a base hiding layer,
A magnetic card in which an IR-absorbing barcode composed of a number of pieces arranged at intervals, a barcode concealing layer using IR-transmissive ink and an IR-transparent white concealing layer are sequentially stacked. A magnetic card having an IR bar code, wherein the bar code hiding layer is a matted bar code hiding layer. 2. A magnetic layer, a base hiding layer,
A magnetic card in which an IR-absorbing barcode composed of a number of pieces arranged at intervals, a barcode concealing layer using IR-transmissive ink and an IR-transparent white concealing layer are sequentially stacked. An IR bar, wherein a filling layer of the same color and the same color as the above-mentioned piece is formed on a portion of the base concealing layer where the above-mentioned bar-code piece is not formed on the underlayer concealing layer. Magnetic card with code.