JP4416075B2 - Transparent card - Google Patents

Description

  The present invention relates to a transparent card having a transparent portion in a part of a printed design, such as a credit card, a cash card, a point card, and an employee card.

  A card such as a credit card, a cash card, or an employee ID card having a magnetic recording unit is driven in a card reader for reading magnetic recording data.

  For example, when a card is inserted into an ATM (automated teller machine), the ATM detects the leading edge of the card, determines that the card has been inserted, and starts reading the magnetic recording unit.

  In many cases, an infrared sensor is used to detect the leading edge of the card.

  As the infrared sensor, for example, an infrared light projecting unit is attached to the front side of the card and a light receiving unit is attached to the back side along the ATM card travel path. When the card passes between the light projecting unit and the light receiving unit, the light receiving unit determines that the infrared ray irradiated from the light projecting unit is blocked by the card and the card has passed.

  For this purpose, the card substrate must shield infrared rays, and a white inorganic substance is kneaded into a plastic base material used for ordinary cards so as to shield infrared rays.

  On the other hand, credit card companies that issue cards, banks, and the like try to capture customers with designs that other companies have not done in order to make their cards stand out.

  Therefore, a technique is disclosed in which a transparent material is used for the card base material, and a material that absorbs a specific wavelength including infrared rays is kneaded into the core material of the card for use with an infrared sensor (see Patent Document 1).

Further, a technique is disclosed in which a transparent paint containing a dye that partially absorbs light in the visible light region and in the infrared region is applied to the core base material or oversheet of the card (Patent Document 2). reference).
JP 2001-301369 A JP, 2001-319325, A The technique currently indicated by the above-mentioned patent documents 1 knead | mixes and uses the material which absorbs a specific wavelength in a core base material, and the kneaded material has wavelength 850-500. It has a maximum absorption region at 900 nm and cannot be used for other devices equipped with infrared sensors.

  In addition, the technique disclosed in Patent Document 2 is a technique in which materials having different infrared absorption wavelength regions are applied to different layers, and the manufacturing process is complicated, and expensive infrared absorber materials in the respective wavelength regions are wasted. The technology used for

  Accordingly, the present invention provides a low-cost transparent card by using a transparent base material in the visible light region and suppressing the amount of infrared absorbent used by partially printing infrared absorbing ink on a transparent portion of the design. It is the purpose.

In order to achieve the object of the present invention, the transparent card according to claim 1 of the present invention is characterized in that a transparent pattern is left on a part of a base of a transparent plastic card by stacking a plurality of sheets or by one sheet, A plastic card printed with a shielding ink containing a metal powder , wherein the transparent pattern is printed with a printing ink containing an infrared absorber having a maximum absorption range at a wavelength of 800 to 1050 nm , and the shielding ink Among the patterns printed in the above, the patterns positioned at least at both ends of the left and right sides (short sides) of the card are designed to the edge of the card .

  Further, the invention according to claim 2 is the invention according to claim 1, wherein the printing ink containing the infrared absorbent having the maximum absorption range at a wavelength of 800 to 1050 nm is at least a wavelength with respect to 100 parts by mass of the binder. 2.0 to 3.0 parts by mass of a first infrared absorber having a maximum absorption range at 800 to 950 nm and a second infrared absorber having a maximum absorption range at wavelengths of 950 to 1050 nm 6.5 to 8. It is produced by mixing 0 parts by mass.

Further, the invention described in claim 3 is the invention described in claim 1 or 2 , wherein the printing position of the transparent pattern is set to at least 21 mm from the upper end of the card and 10 mm from the lower end, respectively, excluding the band-like area. It is characterized by that.

1) A plastic card printed with a shielding ink containing metal powder, leaving a transparent pattern on a part of a base of a transparent plastic card by laminating or by a single sheet as described in claim 1 The transparent pattern is printed with a printing ink containing an infrared absorbent having a maximum absorption range at a wavelength of 800 to 1050 nm , and at least the left and right sides (short sides) of the pattern printed with the shielding ink. The patterns located at both ends of the card can be freely adapted to the design including the transparent portion by being designed up to the edge of the card . Also, the front and back designs do not become obstacles to each design. In addition, the card reader can be handled in the same manner as other types of cards (cards that do not use a transparent substrate).

  2) As described in claim 2, in the transparent card according to claim 1, the printing ink containing an infrared absorber having the maximum absorption range at a wavelength of 800 to 1050 nm has a wavelength of 100 parts by weight of the binder. Prepared by mixing 3.0 parts by mass of the first infrared absorber having the maximum absorption range at 800 to 950 nm and 8.0 parts by mass of the second infrared absorber having the maximum absorption range at wavelengths of 950 to 1050 nm. As a result, an infrared-absorbing ink having a transmittance of 3% or less, which is preferable in terms of specifications, can be obtained.

  Also, 2.0 parts by mass of the first infrared absorber having the maximum absorption range at a wavelength of 800 to 950 nm and 6.5 parts by mass of the second infrared absorber having the maximum absorption range at a wavelength of 950 to 1050 nm are mixed. Thus, it is possible to obtain an infrared absorbing ink having a standard value to be revised and a transmittance of 7% or less.

  Any of the mixed inks can provide a printing ink having excellent transparency in the visible light region and excellent shielding properties in the infrared region.

3 ) As described in claim 3 , in the transparent card according to claim 1 or 2 , the printing position of the transparent pattern is at least 21 mm from the upper end of the card and 10 mm from the lower end, except for the belt-like areas. Once set, transparent cards can be used worldwide.

  The transparent card of the present invention will be described below with reference to the drawings.

  FIG. 1 is a front plan view for explaining one embodiment of the transparent card of the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIGS. FIG. 5 is a diagram for explaining a printing ink and a shielding ink containing an infrared absorbent having a maximum absorption range at wavelengths of 800 to 1050 nm, and FIG. It is a figure for demonstrating the transmittance | permeability control area and the area | region outside a light transmittance control area.

  An embodiment of the transparent card of the present invention will be described with reference to FIG.

  The standard dimensions of the card 1 are determined by ISO (International Organization for Standardization) 7810, width 85.60 mm, height 53.98 mm, and thickness 0.76 mm.

  On the front surface of the card 1, an external connection terminal 11 of an IC module for electronically recording unique information of the cardholder and a magnetic recording unit 12 for magnetically recording are formed.

  In the case of a contact IC card, the external connection terminal 11 of the IC module is formed so as to be exposed on the surface of the card base in order to connect to an external device.

  In the case of a non-contact type IC card, the IC module is embedded in a card base with an antenna.

  The magnetic recording part is usually formed such that the recording surface is exposed on the surface of the card, but it may be formed in a state where the magnetic stripe is concealed and integrated with the card design.

  In addition, magnetic stripes that are magnetic recording portions may be formed on the back surface of the card 1 and on both surfaces of the card 1.

  Also, printed patterns 21, 22, 23 and a background pattern M25 are formed on the front surface of the card as a design.

  When the card base is made of a transparent material, the background pattern M25 is formed to shield the back surface design and to satisfy the conditions of the light transmittance regulation area by ISO. Further, it is preferable that the background pattern M25 is a pattern having the same size as the long side dimension of the card defined in the ISO as described later.

  Further, the magnetic recording portion 12 may be formed on the back surface of the background pattern M25 so that its presence cannot be seen from the appearance. Furthermore, in order to camouflage the presence of the magnetic recording unit, the print pattern 22 or the like may be printed on the magnetic recording unit.

  The print pattern 21 is a transparent pattern, and is substantially a white portion of the background pattern M25. The portion of the printed pattern 21 can be seen through from the front through the back of the card in the visible light region.

  The purpose of making the print pattern 21 of the present invention transparent is at the request of the designer of the card issuing company.

  The print position of the print pattern 21 is regulated by the ISO standard described above, and cannot be provided within 21 mm from the upper end of the card and 10 mm from the lower end of the card.

  The above regulation is that when an external reading device reads information recorded on an IC chip in an IC module formed on a card or a magnetic recording unit, the external reading device detects the card with an optical sensor. It is provided for.

  In the transparent card of the present invention, the background pattern M25 is formed with printing ink that blocks light from the visible light region to the infrared region with a light wavelength of 400 nm to 1050 nm, and satisfies the above-mentioned regulations by ISO. Yes.

  As described above, a light transmittance regulation area is provided in the ISO standard, but depending on the external reader, a card may be detected at a position other than the light transmittance regulation area using an infrared sensor. is there.

  In order to deal with such an external reading device, the present invention can cope with the case where the printed pattern 21 which is a white portion of the background pattern M25 is printed with infrared absorbing ink and detected by the infrared sensor over the entire surface of the card. I am doing so.

  With reference to FIG. 2, FIG. 3, and FIG. 4, the AA line cross section of FIG. 1 is demonstrated.

  In the embodiment shown in FIGS. 2, 3, and 4, the card base is configured to have one oversheet on each side of one core sheet. However, the present invention is not limited to this configuration, and the oversheet is omitted. You can also

  When the oversheet is omitted, the print pattern can be protected with a protective layer.

  With reference to FIG. 2, the AA line cross section of embodiment in FIG. 1 is demonstrated.

  The oversheet 102 is laminated on the upper part of the core sheet 101, and the oversheet 103 is laminated on the lower part via the print pattern 24 and the background pattern W26.

  A background pattern M25 made of shielding ink is formed on the upper portion of the oversheet 102, and a print pattern 21 made of infrared absorbing ink is formed on a portion where the background pattern M25 is missing.

  A print pattern 23 is formed on the background pattern M25, and the background pattern M25, the print pattern 21, and the print pattern 23 are covered with a protective layer 27.

  The protective layer 27 is provided to protect the printed pattern 21, the printed pattern 23, and the background pattern M25 from physical external forces due to friction and the like, and attacks by chemical substances such as chemicals.

  Although not shown, a magnetic stripe as a magnetic recording portion is formed on the oversheet 102. The background pattern is formed so as to avoid the magnetic stripe portion, or is formed so as to cover the magnetic stripe.

  Further, an adhesive may be formed at the boundary between the core sheet 101 and the oversheets 102 and 103 on both sides thereof.

  Further, since the background pattern printed on the front side is seen through the core sheet from the back surface oversheet 103 side, the background pattern W26 is often printed with white ink.

  Moreover, although not shown, the background pattern layer by the background pattern M25 may be configured by a reflective layer made of metal powder and a white layer provided on the protective layer side. The reason is to make it easy to reproduce the print color of the print pattern 23 printed on the upper part of the background pattern layer.

  The embodiment shown in FIG. 3 is a case where the print pattern 21 in FIG. 2 is formed between the core sheet 101 and the oversheet 103.

  The infrared shielding effect by the structure shown in FIG. 3 and FIG. 2 is the same.

  Although not shown, the printing pattern 21 can be printed on the front side as shown in FIG. 2, and the printing pattern 21 can also be printed on the back side as shown in FIG.

  The embodiment shown in FIG. 4 is a case where the background pattern M25, the print pattern 21, and the print pattern 23 in FIG. 2 are formed between the core sheet 101 and the oversheet 102.

  In the case of the embodiment shown in FIG. 4, the formation of the protective layer can be omitted unlike the case of the embodiment shown in FIG.

  This embodiment is convenient when a card having a specification that does not require the formation of a magnetic stripe is produced.

  As the material of the core sheet 101 and the oversheets 102 and 103 in FIGS. 2, 3, and 4, transparent films such as polyvinyl chloride, amorphous polyester, polypropylene, and triacetate are used.

  With reference to FIG. 5, the printing ink containing the infrared absorber which has the largest absorption range in wavelength 800-1050 nm, and shielding ink are demonstrated.

  The curves and straight lines shown in FIG. 5 represent the transmittance for each wavelength of the printed pattern layer printed with the respective inks.

  A transmittance of 100% represents that the printed pattern layer is in a transparent state when irradiated with light of each wavelength.

  A transmittance of 0% indicates that 100% of light is absorbed when the printed pattern layer is irradiated with light of each wavelength.

  The printing ink layer containing the first infrared absorber has the lowest transmittance value between the wavelength of 800 nm and the wavelength of 950 nm, as can be seen from the transmittance curve for each wavelength (a).

  Moreover, the printing ink layer containing a 2nd infrared absorber has the lowest transmittance | permeability value between wavelength 950nm and wavelength 1050nm so that the transmittance | permeability curve (b) according to wavelength may show.

  Conventionally, the first infrared absorbent and the second infrared absorbent have been used in different states. For example, the first infrared absorber is used by being kneaded into a plastic material, and the second infrared absorber is used by being mixed with a coating paint.

  In the present invention, each of the first infrared absorbent and the second infrared absorbent is made into a printing ink, and the two are kneaded together so that they can be used as one kind of printing ink.

  The wavelength-specific transmittance curve of the ink obtained as a result is the wavelength-specific transmittance curve (c) of the printing ink layer in which the first infrared absorber and the second infrared absorber are mixed.

  As can be seen from the transmission curve for each wavelength (c), the transmittance value is the lowest between the wavelength of 800 nm and the wavelength of 1050 nm, and the infrared ray sensor having the light source in the wavelength region of 800 nm to 1050 nm has the most shielding effect. It turns out to be expensive.

(Infrared absorber)
As the first and second infrared absorbers, metal oxides such as iron oxide, cerium oxide, tin oxide and antimony oxide, or indium-tin oxide, tungsten hexachloride, tin chloride, cupric sulfide, chromium- Organic infrared absorbers such as cobalt complex salts, thiol-nickel complexes or aminium compounds, diimonium compounds, and phthalocyanine compounds.

  Of these infrared absorbers, bisdithiobenzylnickel as the first infrared absorber and phthalocyanine compound as the second infrared absorber most effectively absorb infrared rays.

  Moreover, in order to provide printing ink suitability, a particle size shall be 1-3 micrometers.

(Printing ink binder)
In order to make printing inks, these infrared absorbers are used as bisphenol A type epoxy resins, bisphenol F type epoxy resins, polyester resins such as polyvinyl acetate and polyvinyl propionate, and polyolefin resins such as polyethylene, polypropylene, polystyrene and EVA. Disperse in a binder.

  The mixing ratio of the binder and the infrared absorber is 2 to 8 parts by mass of the infrared absorber with respect to 100 parts by mass of the binder.

  The viscosity is adjusted by adding an organic solvent for silk screen printing ink to the infrared absorbent and binder thus obtained.

  A line d substantially parallel to the horizontal axis is a line representing the transmittance of the shielding ink according to wavelength indicated by the background pattern printing layer printed with the shielding ink.

  This shielding ink is made into an ink by pulverizing a metal such as aluminum to a predetermined size, adjusting the light reflectance and opacity to the maximum, and dispersing it in a binder resin suitable for silk screen printing. To do.

  The printing ink is printed to a thickness of 5 to 15 μm in a dry state.

  Examples of infrared absorbing ink will be described below.

  In addition, this invention is not limited to a following example.

  100 parts by weight of a polyester resin silk screen ink binder, 3.0 parts by weight of a phthalocyanine compound, YKR5010 (pigment type) manufactured by Yamamoto Kasei Co., Ltd. as a first infrared absorber, and as a second infrared absorber In addition, 8.0 parts by mass of YKR3080 (aromatic solvent soluble type) manufactured by Yamamoto Kasei Co., Ltd., 50 parts by mass of methyl ethyl ketone and toluene were mixed to form an ink.

  The silk screen ink was printed on a transparent PETG surface of 0.80 mm so as to have a thickness of 15 μm after drying.

  As described above, it was possible to obtain a silk screen ink excellent in organic solvent solubility, binder compatibility, heat resistance, and light resistance and realizing a transmittance of 3% or less in the infrared region of 800 to 1050 nm.

  The transmittance was measured using a spectrophotometer (manufactured by Shimadzu Corporation) that can selectively generate various wavelengths.

  With reference to FIG. 6, the light transmittance regulation area and the area outside the light transmittance regulation area will be described.

  The hatched portions in FIG. 6 are the light transmittance regulation areas 111 and 112.

  According to ISO regulations, light in the wavelength region of 400 nm to 1000 nm must be blocked at least in the light transmittance regulation areas 111 and 112.

  The light transmittance regulation area outside / outside area 110 is an area where the embossing information is stamped, the IC module is mounted, or the signature panel is formed, although the above-mentioned application is not applicable. When all are applied, the area to be formed with a transparent print pattern is extremely limited.

  The transparent card | curd of this invention can be utilized for a credit card, a cash card, a point card, various ID cards, etc.

It is a surface top view for demonstrating one Embodiment of the transparent card | curd of this invention. It is the sectional view on the AA line of FIG. It is the sectional view on the AA line of other embodiment in FIG. It is the sectional view on the AA line of other embodiment in FIG. It is a figure for demonstrating the printing ink containing the infrared absorber which has the largest absorption range in wavelength 800-1050nm, and shielding ink. It is a figure for demonstrating the light transmittance regulation area and the area | region outside a light transmittance regulation area.

Explanation of symbols

1 Card 11 External Terminal of IC Module 12 Magnetic Recording Unit 21 Print Pattern (Print Pattern with Transparent Ink)
22, 23, 24 Print pattern (print pattern with colored ink)
25 Background pattern M (printing pattern with ink containing metal)
26 Background pattern W (printing pattern with white ink)
27 Protective layer 101 Core sheet 102, 103 Oversheet 110 Area outside light transmission restriction area 111, 112 Light transmission restriction area a Transmission by wavelength of printing ink layer containing first infrared absorber b Second infrared Transmission by wavelength of the printing ink layer containing the absorbent c Transmission by wavelength of the printing ink layer containing the infrared absorbing material in which the first infrared absorbing agent and the second infrared absorbing material are mixed d By wavelength of the shielding ink Transmittance e, f Light transmittance regulation area

Claims (3)

A plastic card printed with a shielding ink containing metal powder, leaving a transparent pattern on a part of the base of a plurality of laminated or single transparent plastic card,
The transparent pattern is printed with a printing ink containing an infrared absorber having a maximum absorption range at a wavelength of 800 to 1050 nm ,
The transparent card | curd characterized by the pattern located in the both ends of the card | curd right and left (short side) among the patterns printed with the said shielding ink being designed to the edge of a card | curd. Printing ink containing an infrared absorber having the maximum absorption range at the wavelength of 800 to 1050 nm,
2.0 to 3.0 parts by mass of a first infrared absorber having a maximum absorption range at least at a wavelength of 800 to 950 nm with respect to 100 parts by mass of a binder, and a second infrared ray having a maximum absorption range at a wavelength of 950 to 1050 nm. The transparent card according to claim 1, wherein the transparent card is prepared by mixing 6.5 to 8.0 parts by mass of an absorbent. 3. The transparent card according to claim 1, wherein the printing position of the transparent pattern is set to an area excluding a belt-shaped area, at least 21 mm from the upper end of the card and 10 mm from the lower end.

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