JP2005104105A - Card - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a card which can prevent illegal use thereof by forgery or tampering, such as erasing of a signature, and allows the owner to clearly place his/her signature by means of a writing instrument or to clearly affix his/her seal thereon. <P>SOLUTION: The card consists of a substrate 1, a signature panel 2 arranged on the same, and a ground tint 3 formed on the signature panel 2. The ground tint 3 is formed of dots 4, such that a dot area ratio is set to the range of 20 to 80%. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a card having a signature panel (an area provided for signing an owner's name, etc.) such as an ID card such as an ID card, a membership card or an employee ID card, or a credit card. It relates to cards that prevent counterfeiting and tampering of panels.

  In recent years, cards such as ID cards and credit cards have been widely used as information recording media. These cards are provided with a magnetic recording layer, an optical recording layer, or an IC recording unit, and various information is recorded depending on the application.

  When such a card is used, it is necessary to verify whether or not the card user is a valid owner, and a signature is used as one method for that purpose. FIG. 2 shows a side view of a conventional ID card. As shown in FIG. 2, in the conventional ID card 20, the sign panel 2 is formed on one side (back side) of the base material 1, and the ground pattern 13 is formed on the sign panel 2, and the card owner holds the fountain pen on the sign panel 2. The name is signed by handwriting with a writing instrument such as a ballpoint pen or a sign pen.

  However, an unauthorized user erases the signature of the authorized owner of the sign panel and puts another signature to impersonate the authorized owner and use the card illegally. At present, the confirmation of the signature at the store or the like is performed visually, and it has been difficult to detect tampering or the like at the time of unauthorized use if it is elaborate.

  Therefore, a sign panel that makes it difficult to delete the signature with respect to the signature of the right owner of the sign panel is disclosed (for example, Patent Document 1).

JP-A-4-128086

  However, the sign panel formed by the conventional method disclosed in Patent Document 1 is effective for counterfeiting and tampering with chemicals and the like, but does not react at all to a plastic eraser. For this reason, even if the signature is deleted, the background pattern 13 remains as it is, and another signature can be easily made. In particular, there is no effect on erasing with a plastic eraser.

  Further, in the conventional card, since the ground pattern 13 is formed on the sign panel 2, a signature by a writing instrument such as a part of the sign is faded or shifted due to the unevenness between the ground pattern 13 and the sign panel 2. There are drawbacks in that it is difficult to seal and imprinting with a seal is difficult.

  An object of the present invention is to provide a card that solves the above-described problems and can prevent unauthorized use due to counterfeiting and falsification for deleting a signature, and can clearly perform a signature with a writing instrument and a seal with a seal.

  The present invention is a card having a sign panel on a base material, and a background pattern formed on the sign panel, wherein the background pattern is formed of halftone dots.

  Further, the present invention is the above card, wherein the tint block has a halftone dot area ratio of 20 to 80%.

  The present invention is also the above card, wherein the ink for forming the tint block contains a matting agent.

  According to the card of the present invention, it is possible to easily prevent unauthorized use due to forgery and tampering of the signature. In addition, according to the card of the present invention, it is possible to easily and clearly sign with a writing instrument or seal with a seal.

  Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B are explanatory diagrams of an ID card according to an embodiment of the present invention. FIG. 1A is a plan view and FIG. 1B is a side view.

  As shown in FIG. 1, an ID card 10 according to the present invention is provided with a sign panel 2 in the approximate center of the back surface of a base material 1 and a ground pattern 3 on the sign panel 2. The copy-forgery-inhibited pattern 3 is a character or the like and is formed by collecting circular halftone dots 4, and there are gaps between the individual halftone dots 4. In addition, characters, patterns, etc. such as precautions such as precautions for use are appropriately formed on the remaining part of the back surface.

  The base material 1 may be appropriately selected in consideration of physical properties required for strength, etc. depending on the application, using a synthetic resin such as polyethylene terephthalate, polycarbonate, polyester, and polystyrene, paper, metal, ceramics or the like alone or in combination. it can.

  The sign panel 2 is formed by silk screen printing, offset printing, or gravure printing. Furthermore, ruled lines can be appropriately provided around or inside the sign panel.

  The background pattern 3 is formed by silk screen printing, offset printing, and gravure printing.

  A matting agent is added to the sign panel 2 and the background pattern 3. Matting agents include silicon dioxide, barium sulfate, calcium sulfate, zinc oxide, titanium oxide, silver chloride, alumina, zirconium oxide, zinc carbonate, organic calcium salt, starch, Indian rubber, talc, hardened gelatin, cellulose, polyacrylic acid, Polymethacrylic acid, Teflon (R), polyethylene, polypropylene, crosslinked vinyl polymer, ethylene-propylene copolymer, powder such as alcohol-insoluble nylon, and the like can be used.

  The dot area ratio can be in the range of 20 to 80%. In this range, it can be used without any problem, but 50% is most desirable. Further, the shape of each halftone printed matter is not limited to a circle, and a regular square, a rhombus, or the like can be selected. The number of screen lines can be 175 lines or less, and particularly preferably 30 lines or less.

  The card of the present invention can be used for ID cards such as identification cards, membership cards, and employee cards, credit cards, cash cards, and the like.

  An embodiment will be described by taking a basic resident register card (hereinafter referred to as a Juki card) as an example.

  In this example, a 5.4 cm × 8.6 cm Juki card having a sign panel with a built-in IC module was produced. First, a transparent base layer was formed by offset printing on a substrate made of a PET-G sheet (glycol-modified polyethylene terephthalate) having a size capable of producing a plurality of cards.

  Next, a sign panel was formed thereon by silk screen printing. SS80 writing medium [manufactured by Toyo Ink Manufacturing Co., Ltd.] was used as the ink for forming the sign panel. This ink contained 3% by weight of silicon dioxide powder. The size of the sign panel was 3.3 cm × 5.2 cm. The sign panel was provided with ruled lines by silk screen printing.

  Next, a background pattern was formed on the sign panel by offset printing. As the ink for forming the tint block, a hi-bright IL process (blue) [manufactured by Dainippon Ink & Chemicals, Inc.] was used. This ink contained 0.3% by weight of silicon dioxide powder. The copy-forgery-inhibited pattern is composed of a blue character string “JUKICARD”, and each character is a set of circular halftone dots. At this time, the tint block area ratio was changed to 10 to 90%, and the background pattern was printed. The number of screen lines was 10 lines.

  Then, the Juki card | curd of the present Example was obtained through the process of laminating | stacking a base material, a heat press, IC module mounting, and each card unit with a general manufacturing method.

  Further, as a conventional example, a Juki card was manufactured in the same manner as in the above example except that the ink for forming the background pattern did not contain silicon dioxide and the characters of the background pattern were not formed in a halftone dot shape.

  Using the obtained examples and conventional Juki cards, the erasability, sealability and display properties were examined. The erasability was judged by whether or not the background pattern could be erased by signing the sign panel with an oil-based sign pen and erasing with a plastic eraser. The sealability was judged based on whether or not the sign panel was smeared with a seal. The display property was judged by whether or not the characters of the background pattern were displayed. The results are shown in Table 1. In Table 1, in terms of erasability, ◯ indicates that the background pattern can be erased, and x indicates that the background pattern cannot be erased. In the sealability, ◯ indicates that no fading occurs, Δ indicates that fading occurs but it can be used, and × indicates that fading occurs and cannot be used. In the display property, ◯ indicates that it is displayed, △ indicates that it is difficult to see partly, but it can be used, and X indicates that it is not displayed.

  In Table 1, in terms of erasability, the background pattern could be erased in all cases. With respect to the sealability, it was not possible to seal at 90%. In terms of displayability, it was not displayed to the extent that characters could be seen at 10%. On the other hand, in the conventional example, the characters of the background pattern can be displayed properly, but cannot be erased or stamped. This shows that the halftone dot area ratio can be used within a range of 20 to 80%. Among them, when it was 50%, the three items of erasability, sealability and display were the best.

Explanatory drawing of the ID card in one embodiment of this invention. FIG. 1A is a plan view. FIG. 1B is a side view. The side view of the conventional ID card.

Explanation of symbols

1 Base material 2 Sign panel 3, 13 Background pattern 4 Halftone dot 10, 20 ID card

Claims (3)

  A card having a sign panel on a base material, and a copy-forgery-inhibited pattern formed on the sign panel, wherein the copy-forgery-inhibited pattern consists of halftone dots.   2. The card according to claim 1, wherein the tint block has a halftone dot area ratio of 20 to 80%.   The card according to claim 1 or 2, wherein the ink for forming the tint block contains a matting agent.

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