JP2021091118A - Information concealment card and concealing member sheet - Google Patents

Abstract

To provide an information concealment card capable of making concealed confidential information visible without rubbing a concealment layer.SOLUTION: An information concealment card 10 has: a card base material 1 on which a confidential information area, which is an area on which is confidential information 5 being information to be confidential is printed, is formed; and a concealing member 20 attached to the card base material 1 so as to conceal the confidential information area. The concealing member 20 has a coating base material layer 4, an adhesive layer 3 formed so as to be overlapped on a surface of the coating base material layer 4 on the card base material 1 side, and a concealing layer 2 formed so as to be overlapped on a surface of the adhesive layer 3 on the card base material 1 side. In the information concealment card 10, the concealing member 20 is attached to the card base material 1 in an adhesive area 32 which is an area which does not overlap with the concealing layer 2 in an area in which the adhesive layer 3 is formed.SELECTED DRAWING: Figure 1

Description

The present invention relates to an information concealment card for distributing information in a concealed state, and a concealment member sheet for use in the information concealment card.

Conventionally, a card has been used in which confidential information, which is information to be kept secret, is posted on the surface and the information is hidden by a predetermined method. There are various uses for the card, for example, it is used for a scratch card for lottery, a gift card, a prepaid card, a POSA card (registered trademark), an electronic money card, and the like.

For example, in the case of a POSA (Point of Sales Activation) card, a barcode is posted in addition to confidential information, and the target card is only available when the clerk reads the barcode at the cash register and the payment of the purchase applicant is completed. The posted PIN (Personal Information Number) code becomes available (enabled). The purchaser can obtain the PIN code written on the POSA card and enter the PIN code on the Internet to use it as information having monetary value. In the case of a POSA card, it is necessary to hide the PIN code as confidential information until the time of sale so that the PIN code is not known to anyone other than the purchaser.

In the above-mentioned card represented by a POSA card or the like, confidential information is concealed by covering it with a concealing layer (see Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2014-117816 Japanese Unexamined Patent Publication No. 2014-210409

However, in the above-mentioned conventional technique, when the scratch concealing layer is rubbed and scraped off, the scratch concealing layer may be rubbed too strongly and the confidential information below may be scraped off, causing a trouble that the confidential information cannot be confirmed.

Therefore, an object of the present invention is to provide an information concealment card capable of making the concealed confidential information visible without rubbing the concealment layer.

In order to solve the above problems, in the present invention,
An information concealment card having a card base material on which confidential information, which is information to be concealed, is formed, and a concealing member attached to the card base material so as to conceal the confidential information.
The concealing member is
A coating base material layer for covering the confidential information and
A pressure-sensitive adhesive layer formed on the surface of the coating base material layer on the card base material side,
It has a concealing layer formed so as to be overlapped with the surface of the pressure-sensitive adhesive layer on the card substrate side.
The concealing member provides an information concealment card, which is affixed to the information concealment card in an adhesive region which is a region which does not overlap with the concealment layer in the region where the pressure-sensitive adhesive layer is formed. To do.

Further, the information hiding card according to the present invention is
Among the concealing members, in the concealment region where the concealment layer is formed, the concealment is performed along the longitudinal direction of the concealment member between the concealment information region, which is the region where the concealment information is formed, and the adhesive region. It is characterized in that a notch penetrating the member is intermittently formed.

Further, the information hiding card according to the present invention is
The concealing layer is characterized in that it is formed of an ink containing a pigment.

Further, the information hiding card according to the present invention is
The concealed region on which the concealing layer is formed is characterized in that it projects in the longitudinal direction of the concealing member to form a knob portion.

Further, in the present invention,
A concealment member sheet provided with a plurality of concealing members for attaching to another medium to make a predetermined range difficult to see.
The concealing member is
Coating base layer and
An adhesive layer formed on top of the coating base material layer and
It has a concealing layer formed overlaid on a part of the area of the pressure-sensitive adhesive layer.
Each of the concealing members provides a concealing member sheet characterized in that the concealing member is attached by the pressure-sensitive adhesive layer in a state of being arranged side by side at regular intervals on the peeling base material layer that has been peeled off.

According to the present invention, it is possible to make the concealed confidential information visible without rubbing the concealing layer.

It is a figure which shows the structure of the information concealment card which concerns on one Embodiment of this invention. It is sectional drawing which shows the detail of the concealing member attached to the information concealment card. It is a figure which shows an example of the concealing member sheet which concerns on one Embodiment of this invention. It is a flowchart which shows the manufacturing method of the concealment member sheet and the information concealment card which concerns on one Embodiment of this invention. It is a figure which shows the state at the time of separating a part of the concealing member of the information concealment card which concerns on one Embodiment of this invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
<1. Information concealment card structure>
FIG. 1 is a diagram showing a structure of an information hiding card according to an embodiment of the present invention. Of these, FIG. 1A is a plan view of the information hiding card 10 as viewed from the front surface side, and FIG. 1B is a cross-sectional view corresponding to line AA in FIG. 1A. 1 (c) is a cross-sectional view corresponding to the line BB in FIG. 1 (a), and FIG. 1 (d) is a cross-sectional view corresponding to the line CC in FIG. 1 (a). Is.

In FIG. 1, 1 is a card base material, 2 is a concealing layer, 3 is an adhesive layer, 4 is a coating base material layer, 5 is confidential information, 10 is an information concealing card, 20 is a concealing member, and 40 is code information. .. In the example of FIG. 1, on the front surface side, the area other than the area where the concealing member 20 and the code information 40 exist is shown in a plain state, but in reality, various information such as characters and patterns are printed. It is possible to do. The size of the information hiding card 10 (card base material 1) can be set as appropriate, but for example, it can be a size generally defined by (ISO / IEC7810) or JIS (JIS6301). Specifically, the length of the long side (horizontal direction in the drawing) can be 85.60 mm, and the length of the short side (vertical direction in the drawing) can be 53.98 mm.

In the cross-sectional views of FIGS. 1B, 1C, and 1D, for convenience of explanation, the thickness of each layer (vertical direction in the drawing) is drawn larger than the size of the information hiding card 10 (horizontal direction in the drawing). However, since the information hiding card 10 is in the shape of a card or a sheet, in reality, each layer is formed thinner. For example, the width in FIG. 1 (horizontal direction in the drawing) is several cm to several tens of cm, while the thickness (vertical direction in the drawing) is about several tens μm to several hundred μm. In the layer configuration shown in the cross-sectional views of FIGS. 1B, 1C and 1D, there is actually no distinction between upper and lower layers, but for convenience of explanation, the upper layer (covering base material layer 4 side) is the upper layer and the lower drawing The side (card base material 1 side) will be expressed as the lower layer. Therefore, in FIGS. 1B, 1C, and 1D, the uppermost layer is the coating base material layer 4, and the lowermost layer is the card base material 1. Further, in the present specification, the side having the confidential information as shown in FIG. 1A will be described as the front side, and the other side will be described as the back side. Either side may be the back side.

On the front surface of the card base material 1 (the upper surface in FIGS. 1B and 1D), the confidential information 5 is formed in the confidential information region which is a predetermined region. Specifically, the confidential information 5 is formed by printing. The confidential information 5 is preferably individual information that differs for each card. The confidential information 5 which is variable information can be formed by a known printing method such as inkjet printing or electrophotographic printing. The secret information area on which the secret information 5 is formed is covered with the concealing member 20 and concealed so as to be difficult to see from the front surface of the information concealment card 10.

The concealing member 20 is laminated in the order of the coating base material layer 4, the adhesive layer 3, and the concealing layer 2 from the outer surface side (the front side in FIG. 1 (a) and the upper side in FIGS. 1 (b) (c) (d)). ing. The coating base material layer 4 is a base material layer for covering the confidential information region. The pressure-sensitive adhesive layer 3 is formed over substantially the entire surface of the coating base material layer 4. The concealing layer 2 is formed in the concealing region 31 shown by hatching in FIG. 1A. The region of the concealing member 20 other than the concealing region 31 is the adhesive region 32 in which the adhesive layer 3 is attached to the card base material 1. Therefore, in the concealing member 20, as shown in FIG. 1C, the adhesive region 32 has a two-layer structure of a coating base material layer 4 and an adhesive layer 3. Further, as shown in FIG. 1B, the concealing region 31 has a three-layer structure of a coating base material layer 4, an adhesive layer 3, and a concealing layer 2. As shown in FIG. 1A, the adhesive region 32 has a substantially U-shaped shape having a predetermined width. Assuming a rectangle composed of three sides of the U-shaped outer edge of the adhesive region 32 and another side, the concealed region 31 protrudes from one side other than the U-shaped outer edge of the adhesive region 32. Has a rectangular part. This protruding portion serves as a grip portion 33 when the concealed region 31 is opened.

As shown in FIGS. 1B and 1D, in the information concealment card 10, the concealment layer 2 is arranged at a position superimposed on the confidential information 5. The concealed area 31 in which the concealed layer 2 is formed includes the concealed information area in which the concealed information 5 is formed. The concealing layer 2 contains a predetermined pigment, which makes it difficult to visually recognize the concealed information 5 from the front surface of the information concealing card 10.

As shown in FIG. 1 (c), in the adhesive region 32, the concealing layer 2 does not exist, only the adhesive layer 3 and the coating base material layer 4 exist, so that the adhesive layer 3 is the card base material 1. The concealing member 20 is attached to the card base material 1 by direct contact. Printing of characters, patterns, etc. on the front and back surfaces of the card base material 1 can be performed by a known printing method such as offset printing, gravure printing, screen printing, and inkjet printing.

FIG. 2 is a plan view showing the details of the concealing member 20. FIG. 2 shows a state seen from the front surface of the information hiding card 10, that is, a state seen from the covering base material layer 4 side, as in FIG. 1A. In FIG. 2, in order to clarify the positional relationship between the concealing member 20 and the notch constituting the opening assisting portion 21, unlike FIG. 1, the concealed area 31 is not hatched, and the outer edge of the concealed area 31 is shown by a dashed line. ing. The secret information area 35 is an area in which the secret information is formed, and is a rectangular area shown by a two-dot chain line in FIG. The concealed area 31 is formed with a notch for separating the confidential information area 35 and the adhesive area 32. This notch is a notch that penetrates the covering base material layer 4, and forms an opening assisting portion 21 for assisting the opening of the concealing member 20.

The opening assisting portion 21 is composed of a starting portion 21a, an orthogonal portion 21b, an oblique portion 21c, and an ending portion 21d. The start portion 21a, the orthogonal portion 21b, and the oblique portion 21c are paired at the upper and lower sides. The orthogonal portion 21b is arranged in a straight line along the longitudinal direction (horizontal direction in FIG. 2) of the concealing member 20. In other words, if all the orthogonal portions 21b are connected, they will be located on one straight line. In the example of FIG. 2, the start portion 21a is slightly oblique from the start end (left end) of the concealed region 31 toward the outer edge of the concealed region 31 (vertical direction in FIG. 2), but is like the orthogonal portion 21b. , May be arranged along the longitudinal direction (left-right direction in FIG. 2). The start portion 21a, the orthogonal portion 21b, the skew portion 21c, and the end portion 21d are all notches penetrating the coating base material layer 4.

The orthogonal portion 21b and the oblique portion 21c are connected to each other to form a bent notch. This bent notch can be seen as a 90 ° tilted one-sided Y-shaped one with only the right or left half of the letter "Y", or a dogleg-shaped one tilted by a predetermined angle. It can also be seen as. Therefore, it can also be expressed as "one-sided Y-shape" or "dogleg-like". The angle formed by the orthogonal portion 21b and the oblique portion 21c can be appropriately set, but is preferably an obtuse angle, for example, 135 °. The orthogonal portion 21b and the oblique portion 21c are formed at predetermined intervals along the longitudinal direction (left-right direction in FIG. 2) of the concealing member 20. This interval can be any length. The start portion 21a, the orthogonal portion 21b, and the oblique portion 21c are formed vertically symmetrically with respect to one virtual straight line extending in the longitudinal direction (horizontal direction in FIG. 2) of the concealing member.

Further, in the present embodiment, edge notches 22 are formed in the two outer edge portions extending along the longitudinal direction of the concealing member 20 in the adhesive region 32. The edge notch 22 is a notch that penetrates the coating base material layer 4 in the adhesive region 32. The edge notch 22 is formed so as to extend from the outer edge of the adhesive region 32 at a predetermined angle. On the outer edge of the adhesive region 32, the edge cuts 22 are formed so as to be evenly spaced from each other. The predetermined angle can be set to any angle, but it is preferably 60 ° and 120 ° alternately with respect to the linear outer edge along the longitudinal direction of the concealing member.

Further, in the example of FIG. 1A, the code information 40 is formed in addition to the portion where the concealing member 20 is formed. Although FIG. 1A shows an example in which a barcode which is a one-dimensional code is formed as the code information 40, a two-dimensional code such as a QR code (registered trademark) may be used. Similar to the confidential information 5, the code information 40, which is variable information, can be formed by a known printing method such as inkjet printing or electrophotographic printing. In the code information 40, card identification information capable of identifying an individual of the information concealment card 10 is recorded.

<2. Structure of each layer>
The card base material 1 serves as a card body of the information hiding card 10. As the card base material 1, various materials can be applied depending on the application. For example, natural fiber paper, coated paper, tracing paper, plastic film, or the like may be used, and may be appropriately selected depending on the intended use. In the case of plastic films, polyester resins such as polyethylene terephthalate and polyethylene naphthalate, polyamide resins such as nylon 6, polyolefin resins such as polyethylene, polypropylene and polymethylpentene, vinyl resins such as polyvinyl chloride, and polymethyl Examples thereof include acrylic resins such as metal acrylates, cellulose films such as polycarbonate, cellophane, and cellulose acetate. The card base material 1 may be a copolymer resin containing these resins as a main component, a mixture (including a polymer alloy), or a laminate composed of a plurality of layers.

The surface of the card base material 1 is subjected to corona discharge treatment, plasma treatment, ozone treatment, frame treatment, primer (also called anchor coat, adhesion accelerator, easy adhesive) coating treatment, preheat treatment, dust removal treatment, and vapor deposition treatment. , Alkaline treatment, and other easy-adhesion treatments may be performed. Further, if necessary, additives such as fillers, plasticizers, colorants, and antistatic agents may be added.

The pressure-sensitive adhesive layer 3 is a layer for attaching the concealing member 20 to the card base material 1 side. As the pressure-sensitive adhesive layer 3, an acrylic pressure-sensitive adhesive is most preferable, but a natural rubber-based pressure-sensitive adhesive, a synthetic rubber-based pressure-sensitive adhesive, a silicone rubber-based pressure-sensitive adhesive, or the like may also be used. The coating amount and coating thickness of the pressure-sensitive adhesive for forming the pressure-sensitive adhesive layer 3 are not particularly limited, but preferably, the coating amount is 0.1 g / m ^{2 to} 50 g / m ² , and the coating thickness is 0.1 μm to. It is 50 μm. The pressure-sensitive adhesive layer 3 has adhesiveness so that the concealing member 20 can be easily attached.

The coating base material layer 4 serves as a base material for the concealing member 20 provided with the concealing layer 2. The coating base material layer 4 has a function as a protective layer that hides the confidential information 5 formed on the front surface of the card base material 1 and protects the confidential information 5 from being damaged. As the coating base material layer 4, various materials can be applied depending on the application as long as it has heat resistance, mechanical strength, solvent resistance, and the like. For example, polyester resins such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, polyamide resins such as nylon 6, polyolefin resins such as polyethylene, polypropylene, and polymethylpentene, vinyl resins such as polyvinyl chloride, and polymethyl. Examples thereof include acrylic resins such as metal acrylates, polyethylene films such as polypropylene, cellophane, and cellulose acetate. The coating base material layer 4 may be a copolymer resin containing these resins as a main component, a mixture (including a polymer alloy), or a laminate composed of a plurality of layers. Usually, polyester-based films such as polyethylene terephthalate and polyethylene naphthalate are preferably used because of their high heat resistance and mechanical strength.

The coating base material layer 4 may be a stretched film or an unstretched film, but a film stretched in the uniaxial direction or the biaxial direction is preferable for the purpose of improving the strength. The coating base material layer 4 is used as a film, sheet, or board composed of at least one layer of these resins. The thickness of the coating base material layer 4 can usually be about 2.5 μm to 50 μm, but is preferably 2.5 μm to 12 μm, and more preferably 4 μm to 6 μm. The coating base material layer 4 may be transparent.

The coating base material layer 4 has a corona discharge treatment, a plasma treatment, an ozone treatment, a frame treatment, a primer (also called an anchor coat, an adhesion accelerator, or an easy adhesive) coating treatment, a preheat treatment, a dust removal treatment, and a vapor deposition on the surface thereof. Easy-adhesion treatment such as treatment and alkali treatment may be performed. Further, if necessary, additives such as fillers, plasticizers, colorants, and antistatic agents may be added.

The concealing layer 2 is a layer formed on the innermost surface (lowermost layer side) of the concealing member 20, and is a layer for concealing the confidential information 5 provided on the card base material 1. The concealing layer 2 is formed by printing an ink having a high concealing property. Specifically, it is an ink in which a pigment having high hiding power is dispersed in a relatively large amount in a binder resin, and if necessary, a dye or an ordinary pigment is blended for the purpose of coloring. May be good.

Examples of the highly concealing pigment constituting the concealing layer 2 include metal powders such as silver powder, aluminum powder, brass powder, and copper powder, calcium carbonate, zinc oxide, alumina, titanium dioxide, silica, barium sulfate, and talc. Kaolin, clay, carbon black, resin powder and the like can be used. Further, as the binder resin constituting the concealing layer 2, a polymer that retains the above-mentioned highly concealing pigment and has good adhesion to the coating base material layer 4 is selected and used, for example, natural rubber or hydrochloric acid. Use rubber-based natural resins such as rubber, polybutadiene, styrene-butadiene copolymer, acrylonitril-butadiene copolymer, polyisoprene, polychloroprene, acrylic, vinyl chloride, or vinyl chloride-vinyl acetate copolymer. .. By forming the concealing layer 2 using the ink containing the binder resin, the adhesive force of the pressure-sensitive adhesive layer 3 in the concealing region 31 is weakened, and the pressure-sensitive adhesive layer 3 is directly applied to the confidential information 5 of the card base material 1. It is possible to prevent contact.

For example, silver ink obtained by inking metal powder may be formed by a known printing method such as offset printing, gravure printing, or silk screen printing, and may be printed a plurality of times in order to improve concealment. As the concealing ink used in the present embodiment, one containing a binder resin having a property of sufficiently weakening the adhesive force of the pressure-sensitive adhesive layer 3 is preferable. The coating amount and coating thickness for forming the concealing layer 2 are not particularly limited, but the coating thickness is preferably 0.1 μm to 10 μm.

<3. Concealment member sheet>
The concealing member 20 attached as a part of the information concealment card 10 is separately supplied and is attached to the front surface of the card base material 1. The supply is performed in the state of the concealing member sheet 20A in which the pressure-sensitive adhesive layer 3 side of the concealing member 20 is protected by the release base material layer 6. The concealing member sheet 20A is a sheet provided with a plurality of concealing members 20 for sticking to the card base material 1 which is another medium and making a predetermined range difficult to see. FIG. 3 is a diagram showing an example of the concealing member sheet 20A according to the present embodiment. Of these, FIG. 3A is a plan view seen from the coating base material layer 4 side, and FIG. 3B is a cross-sectional view corresponding to the DD line in FIG. 3A. In FIG. 3A, the outer edge of the concealed region 31 is indicated by a dashed-dotted line.

The release base material layer 6 has a strip-like shape that greatly extends in the longitudinal direction (left-right direction in FIG. 3). Each concealing member 20 is attached to the peeling base material layer 6 that has been peeled off by the pressure-sensitive adhesive layer 3 in a state of being arranged side by side at regular intervals. As shown in FIG. 3A, the concealing member sheet 20A has the concealing members 20 arranged at equal intervals on one surface of the release base material layer 6 along the longitudinal direction thereof. ..

The release base material layer 6 is a support for protecting the pressure-sensitive adhesive layer 3 and supporting the concealing member 20. As the release base material layer 6, various materials can be applied depending on the application. For example, any of natural fiber paper, coated paper, tracing paper, plastic film, glass, ceramics and the like may be used, and may be appropriately selected depending on the intended use. In the case of plastic films, polyester resins such as polyethylene terephthalate and polyethylene naphthalate, polyamide resins such as nylon 6, polyolefin resins such as polyethylene, polypropylene and polymethylpentene, vinyl resins such as polyvinyl chloride, and polymethyl Examples thereof include acrylic resins such as metal acrylates, cellulose films such as polycarbonate, cellophane, and cellulose acetate. The release base material layer 6 may be a copolymer resin containing these resins as a main component, a mixture (including a polymer alloy), or a laminate composed of a plurality of layers.

When a plastic film is used as the release base material layer 6, it may be a stretched film or an unstretched film, but a film stretched in the uniaxial direction or the biaxial direction is preferable for the purpose of improving the strength. The release base material layer 6 is used as a film, sheet, or board composed of at least one layer of these resins. The peeling base material layer 6 peels off silicone-based or acrylic resin or the like on the surface in contact with the concealing member (the surface exposed in the portion where the concealing member 20 does not exist in FIG. 3: the front side in the drawing in FIG. 3). The agent is printed or coated and peeled off.

<4. Manufacture of information hiding cards>
Next, a method of manufacturing the information hiding card according to the present embodiment will be described. FIG. 4 is a flowchart showing a method of manufacturing an information hiding card according to an embodiment of the present invention. First, in steps S1 to S3, the concealing member sheet 20A is prepared.

Specifically, in steps S1 to S3, the concealing member sheet 20A composed of the concealing layer 2, the pressure-sensitive adhesive layer 3, the coating base material layer 4, and the peeling base material layer 6 is manufactured. First, a pressure-sensitive adhesive is applied to one surface of the coating base material layer 4 to form the pressure-sensitive adhesive layer 3 (step S1). The coating amount and coating thickness of the pressure-sensitive adhesive in the pressure-sensitive adhesive layer 3 are not particularly limited, but preferably, the coating amount is 0.1 g / m ^{2 to} 50 g / m ² , and the coating thickness is 0.1 μm to 50 μm. As a method of applying the pressure-sensitive adhesive for forming the pressure-sensitive adhesive layer 3, for example, coating by a gravure method, a spray coating method, a flexographic method, or the like capable of relatively high speed can be used.

Next, the concealing layer 2 is formed in a pattern by superimposing the adhesive layer 3 (step S2). Specifically, silver ink and black ink having high concealing properties are printed on a part of the region where the pressure-sensitive adhesive layer 3 is formed by a known printing method or coating method. In this embodiment, silver ink and black ink are pattern-printed by a screen printing method using a silk printing machine. By printing characters with black ink on the background of silver ink, it is possible to express a message (for example, "turn in the direction of the arrow") when the user turns the concealing member.

Next, the release base material layer 6 is laminated on the surface of the coating base material layer 4 on the side where the pressure-sensitive adhesive layer 3 and the concealment layer 2 are formed (step S3). As the release base material layer 6, a surface on the side in contact with the concealment layer 2 that has been subjected to a release treatment in advance is used.

Further, from the side of the coating base material layer 4, the coating base material layer 4 is penetrated to form a notch having a depth that does not reach the peeling base material layer 6 (step S4). Specifically, a pinnacle (registered trademark) blade or a biku blade is used to form a notch including a single Y-shaped notch and an end notch as shown in FIGS. 2 and 3. At this time, the notch along the outer circumference of the concealing member also penetrates the covering base material layer 4 and is formed at a depth that does not reach the peeling base material layer 6. In this state, a sheet in which the concealing member 20 is multifaceted vertically and horizontally can be obtained. This sheet is slit and separated in the direction in which the concealing members 20 are lined up in a row, and the covering base material layer 4 other than the concealing member 20 is removed from the peeling base material layer 6 by so-called scrap raising. As a result, the concealing member sheet 20A as shown in FIG. 3 can be obtained.

Next, confidential information is formed on the card base material (step S5). The confidential information 5 which is variable information can be formed by a known printing method such as inkjet printing or electrophotographic printing. For fixed information other than confidential information, known printing methods such as offset printing, gravure printing, screen printing, inkjet printing, and electrophotographic printing are used.

Next, using a label affixing machine called a labeler, the concealing member 20 composed of the concealing layer 2, the adhesive layer 3, and the covering base material layer 4 is attached to the card base material 1 (step S6). Specifically, the concealing member 20 is peeled from the peeling base material layer 6 while conveying the concealing member sheet 20A. Then, the concealing member 20 is attached to the card base material 1 with the pressure-sensitive adhesive layer 3 facing the card base material 1. At this time, the concealing member 20 is attached while being aligned at a position covering the confidential information area 35 on which the confidential information 5 is formed on the card base material 1.

As a result, the confidential information 5 formed on the card base material 1 is concealed by the concealing member 20 provided with the concealing layer 2. The state of the information concealment card 10 at this time as viewed from the front surface side (concealment member 20 side) is as shown in FIG. 1A. As shown in FIG. 1A, in the information hiding card 10, a hiding area 31 (hiding layer 2) is formed so as to cover the secret information area 35. With the information hiding card 10 obtained in this way, it is difficult to visually recognize the secret information 5 from the outside. Therefore, it is possible to prevent the confidential information 5 from being leaked.

Further, in the example of FIG. 1A, the part other than the part where the concealing member 20 is formed and the part where the code information 40 is formed is set to the ground (blank paper) state, and the pattern and the like are omitted. If necessary, arbitrary information or patterns may be formed on the front surface and the back surface of the card base material 1 by printing or the like. Information can be printed on the card substrate 1 by a known printing method such as offset printing, gravure printing, screen printing, and inkjet printing.

<5. Use of information hiding card>
The information hiding card 10 as shown in FIGS. 1 and 2 is displayed and sold in the store. In the displayed state, the confidential information cannot be visually recognized from the outside. A user who has purchased the information concealment card 10 at a store opens the concealment member 20 and separates a part of the concealment area 31 from the information concealment card 10 in order to know the confidential information. Specifically, the grip portion 33 is picked with a finger and pulled along the longitudinal direction of the concealing member 20.

FIG. 5 is a diagram showing a state when a part of the concealing member of the information concealment card according to the present embodiment is separated. When the knob 33 is picked and pulled with a finger according to the message "→ Please turn in the direction of the arrow" formed on the concealing layer 2 of the concealing member 20 as shown in FIG. 1 (a), the adjacent orthogonal portions 21b The connecting part between the notches is cut. Then, the concealing layer 2, the pressure-sensitive adhesive layer 3, and the peeling base material layer 6 in the concealing region 31 are separated from one side (left side in FIG. 5) by making the adjacent orthogonal portions 21b continuous as a notch. FIG. 5A shows a state in which the concealing layer 2, the pressure-sensitive adhesive layer 3, and the peeling base material layer 6 in the concealing region 31 are partially separated.

Further, when the pinched portion 33 is pulled while being pinched, the notch of the terminal portion 21d is reached, and a part of the concealing layer 2, the adhesive layer 3, and the peeling base material layer 6 in the concealing region 31 is completely separated. Then, as shown in FIG. 5B, the confidential information area 35 is completely exposed. As a result, the confidential information 5 can be visually recognized from the front surface side.

When the information hiding card 10 is used as a POSA card, the user purchases the information hiding card 10 at a store in the state shown in FIG. 1A before separating the hiding member 20. At that time, the code information 40 is read by the barcode reader at the cash register of the store. As a result, the card identification information recorded in the code information 40 is transmitted to a predetermined computer on the network and activated. Specifically, the information hiding card 10 of the card number is set in the computer in a usable state.

Then, the user who has purchased the information concealment card 10 separates a part of the concealment member 20 and recognizes the confidential information as shown in FIG. Then, the computer on the network is accessed and the confidential information is transmitted as a password. When a password that has already been stored in association with the activated card number is entered, processing such as setting a predetermined service that is commensurate with the monetary value to be available corresponding to the card number is performed. Therefore, the user who has purchased the information concealment card 10 can receive a service commensurate with the monetary value.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be modified in various ways. For example, in the above embodiment, in the concealed area where the concealing layer is formed, a part of a so-called one-sided Y-shaped notch is formed between the concealed information area and the adhesive area as an opening assisting portion in the longitudinal direction of the concealing member. Although it is formed intermittently along the line, any form may be used as long as a notch penetrating the concealing member is intermittently formed along the longitudinal direction of the concealing member. For example, the opening assisting portion may be formed by a so-called perforation line of sight in which only linear notches are intermittently formed.

Further, in the above embodiment, an edge notch is formed at the edge along the outer edge of the adhesive region of the concealing member, but the adhesive force is appropriately adjusted, and the concealing member is formed from the peeling base material layer of the concealing member sheet 20A. It is not always necessary to form an edge notch if it can be easily peeled off.

Further, in the above embodiment, the code information 40 is formed on the front surface of the card base material 1, but when the information concealment card is used for a lottery ticket or the like, the code information is not necessarily on the front surface, the back surface, or the like. There is no need to form in.

1 ... Card base material 2 ... Concealing layer 3 ... Adhesive layer 4 ... Covering base material layer 5 ... Confidential information 6 ... Peeling base material layer 10 ... Information concealment card 20・ ・ ・ Concealment member 20A ・ ・ ・ Concealment member sheet 21 ・ ・ ・ Opening auxiliary part 21a ・ ・ ・ Start part 21b ・ ・ ・ Straight part 21c ・ ・ ・ Oblique part 21d ・ ・ ・ End part 22 ・ ・ ・ Edge part Notch 31 ・ ・ ・ Concealed area 32 ・ ・ ・ Adhesive area 33 ・ ・ ・ Picking part 35 ・ ・ ・ Confidential information area 40 ・ ・ ・ Code information

Claims (5)

An information concealment card having a card base material on which confidential information, which is information to be concealed, is formed, and a concealing member attached to the card base material so as to conceal the confidential information.
The concealing member is
A coating base material layer for covering the confidential information and
A pressure-sensitive adhesive layer formed on the surface of the coating base material layer on the card base material side,
It has a concealing layer formed so as to be overlapped with the surface of the pressure-sensitive adhesive layer on the card substrate side.
The information hiding member is an information hiding card that is attached to the information hiding card in an adhesive region that is a region that does not overlap with the hiding layer in the region where the pressure-sensitive adhesive layer is formed. Among the concealing members, in the concealment region where the concealment layer is formed, the concealment is performed along the longitudinal direction of the concealment member between the concealment information region, which is the region where the concealment information is formed, and the adhesive region. The information hiding card according to claim 1, wherein a notch penetrating the member is intermittently formed. The information hiding card according to claim 1 or 2, wherein the hiding layer is formed of an ink containing a pigment. The information concealment card according to any one of claims 1 to 3, wherein the concealing region on which the concealing layer is formed protrudes in the longitudinal direction of the concealing member to form a knob portion. .. A concealment member sheet provided with a plurality of concealing members for attaching to another medium to make a predetermined range difficult to see.
The concealing member is
Coating base layer and
An adhesive layer formed on top of the coating base material layer and
It has a concealing layer formed overlaid on a part of the area of the pressure-sensitive adhesive layer.
Each of the concealing members is a concealing member sheet, which is attached by the pressure-sensitive adhesive layer in a state where the concealing members are arranged side by side at regular intervals on the peeling base material layer that has been peeled off.

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