JP2022107130A - Information hiding card and hiding member sheet - Google Patents

Abstract

To provide an information hiding card which enables hidden confidential information to be visible without scratching a hiding layer.SOLUTION: An information hiding card 10 has: a card base material 1 which is formed with confidential information 5; and a hiding member 20 which is bonded to the card base material 1. The hiding member has: a covered base material layer 4 which covers the confidential information; an adhesive layer 3 which is formed overlapping with the card base material side of the covered base material layer; an adhesion inhibition layer 2 which is formed overlapping with the card base material side of the adhesive layer; and a coloring layer 7 which is formed overlapping with the opposite side of the card base material side of the covered base material layer. The hiding member is bonded to the information hiding card in an adhesion area 32. In an adhesion inhibition area formed with the adhesion inhibition layer of the hiding member, slits which penetrate through the hiding member are intermittently formed along a longitudinal direction of the hiding member between a first confidential information area formed with first confidential information and the adhesion area. A white layer 7b is formed as an uppermost layer of the coloring layer in a position overlapping with the slits.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to an information concealment card for distributing information in a concealed state, and a concealment member sheet used for 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, in addition to confidential information, a barcode for identifying each individual card is posted, and the clerk reads the barcode at the cash register and pays the purchase applicant. When completed, the PIN (Personal Information Number) code printed on the target card becomes available (enabled) for the first time. 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 hidden information below may be scraped off, resulting in a trouble that the confidential information cannot be confirmed.

Therefore, an object of the present disclosure 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, this disclosure
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, and
An adhesion suppressing layer formed so as to be overlapped with the surface of the pressure-sensitive adhesive layer on the card substrate side,
It has a colored layer formed on the surface of the coating base material layer opposite to the card base material side.
In the concealing member, the pressure-sensitive adhesive layer is an adhesive region that is a region that does not overlap with the adhesion-suppressing layer in the formed region, and a region that overlaps with the adhesion-suppressing layer in the formed region. Has an adhesion suppression region that is
The concealing member is attached to the card base material in the adhesive region.
In the adhesion suppressing region of the concealing member, there is a concealment information region in which the concealment information of the card base material is formed.
The concealing member is intermittently formed with a notch penetrating the concealing member along the longitudinal direction of the concealing member at least in a part between the concealment information region and the adhesive region.
Provided is an information hiding card in which a white layer is formed as an uppermost layer of a colored layer at a position overlapping the notch.

In addition, the information hiding card related to this disclosure is
The confidential information may consist of at least the first confidential information which is the first confidential information and the second confidential information which is the second confidential information.

In addition, the information hiding card related to this disclosure is
In the concealing member, a notch penetrating the concealing member is intermittently formed between the first concealment information region in which the first concealment information is formed and the adhesive region along the longitudinal direction of the concealing member. May be good.

In addition, the information hiding card related to this disclosure is
In the concealing member, a notch penetrating the concealing member is intermittently formed between the second concealment information region in which the second concealment information is formed and the adhesive region along the longitudinal direction of the concealing member. May be good.

In addition, the information hiding card related to this disclosure is
The width of the adhesive region formed at a position sandwiching the first concealed information area in a direction intersecting the longitudinal direction of the concealing member is the concealment of the adhesive region formed at a position sandwiching the second concealed information region. It may be smaller than the width in the direction intersecting the longitudinal direction of the member.

In addition, the information hiding card related to this disclosure is
The first confidential information may be a two-dimensional code in which predetermined information is recorded.

In addition, in this disclosure,
A concealing 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
A coating base material layer for covering confidential information, which is information to be confidential, and
An adhesive layer formed on one surface of the coating base material layer and
An adhesion suppressing layer formed over the pressure-sensitive adhesive layer and
It has a colored layer formed on the surface of the coating base material layer opposite to the pressure-sensitive adhesive layer.
In the concealing member, the pressure-sensitive adhesive layer is an adhesive region that is a region that does not overlap with the adhesion-suppressing layer in the formed region, and a region that overlaps with the adhesion-suppressing layer in the formed region. Has an adhesion suppression region that is
In the concealing member, notches penetrating the concealing member along the longitudinal direction of the concealing member are intermittently formed in at least a part of the adhesion suppressing region.
Provided is a concealing member sheet in which a white layer is formed as an uppermost layer of a colored layer at a position overlapping the cut.

According to the present disclosure, 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 disclosure. It is sectional drawing which shows the detail of the concealing member attached to the information concealment card. It is sectional drawing which shows the detail of the concealing member attached to the information concealment card. It is sectional drawing of the concealing member 20. It is a figure which shows an example of the concealing member sheet which concerns on one Embodiment of this disclosure. 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 disclosure. It is a figure which shows the state which separated a part of the concealment member 20 of the information concealment card which concerns on this embodiment, and exposed the concealment information area 35.

Hereinafter, preferred embodiments of the present disclosure 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 disclosure. 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 line BB in FIG. 1 (a).

In FIG. 1, 1 is a card base material, 2 is an adhesive suppression layer, 3 is an adhesive layer, 4 is a coating base material layer, 5 is a confidential information layer, 7b is a white layer, 7c is a pattern layer, and 10 is an information concealment card. 20 is a concealing member, 31 is an adhesion suppressing region, 32 is an adhesive region, 33 is a knob portion, 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 FIG. 1A) can be 85.60 mm, and the length of the short side (vertical direction in FIG. 1A) can be 53.98 mm.

In the cross-sectional views of FIGS. 1B and 1C, 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 structure shown in the cross-sectional view of FIGS. 1B and 1C, in reality, there is no distinction between upper and lower. However, for convenience of explanation, the upper side of the drawing (the side of the coating base material layer 4) is referred to as the upper layer, and the lower side of the drawing (the side of the card base material 1) is referred to as the lower layer. Therefore, in FIGS. 1B and 1C, the white layer 7b or the pattern layer 7c is the uppermost layer, and the card base material 1 is the lowest layer. 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 1C), 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.

In the present embodiment, as will be described later, the area where the first confidential information 5a is formed is referred to as the first confidential information area 35a, and the area where the second confidential information 5b is formed is referred to as the second confidential information area 35b (FIG. 2). reference). The first secret information area 35a and the second secret information area 35b can be set to any area as long as they include the first secret information 5a and the second secret information 5b, respectively. In the present embodiment, the first confidential information area 35a is a rectangular area including all of the first confidential information 5a, and the second confidential information area 35b is a rectangular area including all of the second confidential information 5b. Is.

The first concealment information 5a is information that requires a certain length in a direction intersecting the longitudinal direction of the concealing member 20. The intersecting directions are typically orthogonal directions. In this embodiment, a two-dimensional code is used as the first confidential information 5a. The two-dimensional code requires a certain length in each of the vertical and horizontal directions (vertical direction and horizontal direction in FIG. 1A). Therefore, a certain length is required even in the direction intersecting the longitudinal direction of the concealing member 20. Further, in the present embodiment, character information is used as the second confidential information 5b. When the character information is arranged in a row along the longitudinal direction, the length of one character is sufficient as long as it is within the visible range. Therefore, the length of the first concealment information 5a is not required in the direction intersecting the longitudinal direction of the concealment member 20.

The concealing member 20 is arranged in the order of the colored layer 7, the coating base material layer 4, the adhesive layer 3, and the adhesion suppressing layer 2 from the outer surface side (the front side in FIG. 1 (a) and the upper side in FIGS. 1 (b) and 1 (c)). It is laminated. Although details will be described later, in the present embodiment, the colored layer 7 has a four-layer structure of a first concealing layer 7aa, a second concealing layer 7ab, a white layer 7b, and a pattern layer 7c. Of these, the first concealing layer 7aa, the second concealing layer 7ab, and the white layer 7b have the same coating area, and the pattern layer 7c is applied to a region narrower than the white layer 7b. In FIGS. 1B and 1C, the first concealing layer 7aa and the second concealing layer 7ab are omitted in order to avoid complicating the figure.

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 adhesion suppressing layer 2, the first concealing layer 7aa, the second concealing layer 7ab, and the white layer 7b are formed in the same region. The pattern layer 7c is formed so as to be overlapped on the side opposite to the card base material 1 of the white layer 7b. Since the pattern layer 7c is formed in a region narrower than the white layer 7b, a part of the white layer 7b is visible in FIG. 1A. The adhesion suppressing layer 2, the first concealing layer 7aa, the second concealing layer 7ab, and the white layer 7b do not necessarily have to be formed in the same region, but by forming them in the same region, the same pattern can be obtained. Each layer can be printed using the plate of the above, and efficiency can be improved. Further, the white layer 7b needs to be arranged on the uppermost layer at a position overlapping with the first orthogonal portion 21ba constituting the opening assisting portion 21 described later, but at other locations, the first concealing layer 7aa, It does not have to be formed in the same region as the second concealing layer 7ab. However, in order to conceal the first concealing layer 7aa and the second concealing layer 7ab, it is preferable that the first concealing layer 7aa and the second concealing layer 7ab are formed over the entire range.

The region other than the adhesion suppressing region 31 in the concealing member 20 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 FIGS. 1 (b) and 1 (c), the adhesive suppressing layer 2 does not exist in the adhesive region 32. Further, as shown in FIG. 1B, the adhesion suppressing layer 2 is formed in the adhesion suppressing region 31. As shown in FIG. 1A, the adhesive region 32 has a substantially U-shaped shape as a whole. Assuming a rectangle composed of three sides of the U-shaped outer edge of the adhesive region 32 and another side, the adhesive suppressing region 31 is formed from one side other than the U-shaped outer edge of the adhesive region 32. It has a protruding part. This protruding portion serves as a grip portion 33 when opening the concealed portion.

As shown in FIGS. 1 (b) and 1 (c), in the information hiding card 10, the adhesion suppressing layer 2 is arranged at a position superimposed on the secret information 5. The adhesion suppressing region 31 on which the adhesion suppressing layer 2 is formed includes the confidential information region on which the confidential information 5 is formed. In the present embodiment, the colored layer 7 mainly plays a role of concealing the confidential information 5. Further, in the present embodiment, since the adhesion suppressing layer 2 is formed by applying an ink containing a pigment, it is more difficult to visually recognize the confidential information 5 from the front surface of the information concealment card 10. It is supposed to be.

As shown in FIGS. 1 (b) and 1 (c), the adhesive suppressing layer 2 does not exist in the adhesive region 32, and only the adhesive layer 3 exists on the card base material 1 side of the coating base material layer 4. Therefore, the concealing member 20 is attached to the card base material 1 by the pressure-sensitive adhesive layer 3 coming into direct contact with the card base material 1. 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. In FIG. 2, as in FIG. 1A, the state of the information hiding card 10 as viewed from the front surface is partially enlarged. Since the concealing member 20 is formed by overlapping a large number of layers, it is shown in FIG. 2 by being decomposed into FIGS. 2 (a) and 2 (c). FIG. 2A mainly shows the relationship between the white layer 7b and the pattern layer 7c. Therefore, in FIG. 2A, the notches (21ba, 21ca, etc.) are not shown. FIG. 2B mainly shows the relationship between the notches (21ba, 21ca, etc.) formed in the concealing member 20, the white layer 7b, and the pattern layer 7c. In FIG. 2A, the pattern layer 7c is shown by hatching, whereas in FIG. 2B, the outer edge of the pattern layer 7c is shown by a alternate long and short dash line. FIG. 2C mainly shows the relationship between the confidential information region 35 formed on the card base material 1 and the notches (21ba, 21ca, etc.) formed in the concealing member 20. Therefore, in FIG. 2C, the pattern layer 7c is not shown.

FIG. 3 is a cross-sectional view of a portion of the information concealment card according to the present embodiment to which a concealing member is attached. FIG. 4 is a cross-sectional view of the concealing member 20. In FIG. 3, for convenience of illustration, the first concealing layer 7aa and the second concealing layer 7ab are omitted from the colored layers 7 as in FIG. 1. In FIG. 4, all the layers of the concealing member 20 are shown. Of FIG. 3, FIG. 3A is a schematic cross-sectional view corresponding to the line CC in FIG. 2, and FIG. 3B is a schematic cross-sectional view corresponding to the line DD. Further, in FIG. 4, FIG. 4A is a detailed cross-sectional view of the layer structure corresponding to the line CC in FIG. 2 when the concealing member is attached, and FIG. 4B is the concealing member attached. A detailed cross-sectional view corresponding to the DD line in FIG. 2 and FIG. 4 (c) are detailed cross-sectional views corresponding to the BB line in FIG. 1 when the concealing member is attached.

In FIGS. 3 and 4, the lower side of the drawing is the card base material 1 side, and the upper side of the drawing is the side opposite to the card base material 1. As shown in FIGS. 4A and 4B, the concealing member 20 has the pressure-sensitive adhesive layer 3 and the adhesion suppressing layer 2 on the card base material 1 side of the coating base material layer 4 in this order from the side of the coating base material layer 4. It is laminated. Further, on the side of the coating base material layer 4 opposite to the card base material 1, the first concealing layer 7aa, the second concealing layer 7ab, the white layer 7b, and the pattern layer 7c are laminated in this order from the side of the coating base material layer 4. .. The first concealing layer 7aa, the second concealing layer 7ab, the white layer 7b, and the pattern layer 7c may be collectively referred to as the colored layer 7. Further, the first concealing layer 7aa and the second concealing layer 7ab may be collectively referred to as a concealing layer 7a. The concealing layer 7a may be formed of any number of layers. For example, it may be composed of only one layer, or may be composed of three or more layers. In the present embodiment, the concealing layer 7a is composed of two layers, a first concealing layer 7aa and a second concealing layer 7ab.

In FIG. 2A, the outer edge of the white layer 7b is shown by a solid line. Of these, the two edges (upper side and lower side in FIG. 2) extending in the longitudinal direction of the concealing member 20 are line-symmetrical with each other. Of the outer edges of the white layer 7b, the edges extending in the longitudinal direction of the concealing member 20 are composed of two linear line segments parallel to each other and a curved line connecting these two line segments. In FIG. 2A, the pattern layer 7c is hatched and shown. In the present embodiment, the pattern layer 7c is formed in the region of the white layer 7b, and there is no portion protruding from the region of the white layer 7b. Therefore, of the outer edge of the pattern layer 7c, the right end, the upper end, and the right portion of the lower end shown in FIG. 2 coincide with the outer edge of the white layer 7b.

The first concealment layer 7aa and the second concealment layer 7ab are formed to conceal the concealment information 5 formed in the concealment information region 35. Therefore, it is formed by applying an ink containing a pigment having a high hiding power. The white layer 7b is formed to conceal the second concealing layer 7ab so as to be difficult to see. Further, the color of the white layer 7b is limited to white so that the opened end portion is not confused with a part of the confidential information 5 printed mainly in a dark color such as black, as will be described later. Is. The pattern layer 7c is a layer that forms a pattern such as a pattern or characters on the white layer 7b. Due to the pattern formed on the pattern layer 7c, the pattern and characters can be visually recognized from the front surface side of the information hiding card 10. The pattern layer 7c further enhances the concealment of the confidential information 5 and plays a role of emphasizing the existence of the concealing member 20 to the user.

As is clear from comparing FIG. 3A and FIG. 3B, the width in the direction intersecting the longitudinal direction of the concealing member 20 of the adhesion suppressing layer 2 (horizontal direction in FIG. 3) is the first concealment information 5a. The position that covers the second confidential information 5b is larger than the position that covers the second confidential information 5b. Therefore, when the concealing member 20 has a rectangular shape and the overall width is constant, the width in the direction intersecting the longitudinal direction of the concealing member 20 of the adhesive region 32 (horizontal direction in FIG. 3) is the first concealment. The position that covers the information 5a is smaller than the position that covers the second confidential information 5b.

In this embodiment, a two-dimensional code is used as the first confidential information 5a. The two-dimensional code requires a certain length in each of the vertical and horizontal two-dimensional directions in response to machine reading. Therefore, it is necessary to form the card base material 1 with a constant length in each of the vertical and horizontal two-dimensional directions. On the other hand, in order to print various information on the card base material 1 in a narrow space, there is a demand that the area of the concealing member 20 be reduced to some extent. Therefore, on the two-dimensional code which is the first concealment information 5a, in order to expand the adhesion suppressing layer 2 while suppressing the width in the direction intersecting the longitudinal direction of the concealing member 20, as shown in FIG. 3A, The width of the adhesive region 32 is relatively narrow.

Further, in the present embodiment, visible character information is used as the second confidential information 5b. When the character strings are arranged in a row, the width of one character is sufficient for one direction. Therefore, when the second concealment information 5b is formed as a character string arranged in the longitudinal direction of the concealing member 20 on the card base material 1, the adhesion suppressing layer is suppressed even if the width in the direction intersecting the longitudinal direction of the concealing member 20 is suppressed. 2 can be narrowed. Therefore, as shown in FIG. 3B, the width of the adhesive region 32 can be relatively widened.

In this way, since the width in the direction intersecting the longitudinal direction is narrowed while hiding the first concealed information 5a such as the two-dimensional code, the adhesive force of the portion overlapping the first concealed information 5a in the longitudinal direction is weakened. Therefore, a wide area of the adhesive region 32 is secured at the portion overlapping with the second concealment information 5b in the longitudinal direction, and the adhesive strength of the entire concealing member 20 is maintained.

The confidential information area 35 is an area in which confidential information is formed. As described above, in the present embodiment, there are a first secret information area 35a and a second secret information area 35b. In each of them, in FIG. 2C, it is a rectangular region shown by a two-dot chain line. The adhesion suppressing region 31 is formed with a notch for separating the first confidential information region 35a and the second confidential information region 35b from the adhesive region 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.

As shown in FIGS. 2B and 2C, the opening assisting portion 21 includes a starting portion 21a, a first orthogonal portion 21ba, a first skewing portion 21ca, a connecting portion 21e, a second orthogonal portion 21bb, and a second oblique portion. It is composed of a portion 21cc and a terminal portion 21d. In FIG. 2C, the broken lines La, Lb, and Lc extending in the longitudinal direction (horizontal direction in FIG. 2) of the concealing member 20 are virtual lines for explanation. The two virtual lines La are straight lines connecting the first orthogonal portions 21ba. The two virtual lines Lb are straight lines connecting the second orthogonal portions 21bb. One virtual line Lc is a straight line indicating the central position in the direction intersecting the longitudinal direction of the concealing member 20.

The start portion 21a, the first orthogonal portion 21ba, the first skew portion 21ca, the connecting portion 21e, the second orthogonal portion 21bb, and the second skew portion 21cc are paired with two upper and lower parts that are line-symmetric with respect to the virtual line Lc. It has become. As shown in FIG. 2C, a plurality of the first orthogonal portion 21ba and the first skewed portion 21ca are formed at positions sandwiching the first confidential information area 35a, and the second orthogonal portion 21bb and the second diagonal portion 21bb are formed. A plurality of diagonal portions 21cc are formed at positions sandwiching the second confidential information region 35b. The first orthogonal portion 21ba and the second orthogonal portion 21bb are respectively arranged linearly along the longitudinal direction (horizontal direction in FIG. 2) of the concealing member 20. In other words, when all the first orthogonal portions 21ba and all the second orthogonal portions 21bb are connected, they are located on one straight line. As shown in FIG. 2 (c). Each first orthogonal portion 21ba is arranged on the virtual line La, and each second orthogonal portion 21bb is arranged on the virtual line Lb.

The connecting portion 21e is a curved notch formed so as to connect between the first orthogonal portion 21ba and the second orthogonal portion 21bb that are adjacent to each other. The straight line in which the plurality of first orthogonal portions 21ba are lined up and the straight line in which the plurality of second orthogonal portions 21bb are lined up are out of alignment, but due to the presence of the connecting portion 21e, the first straight line portion 21ba is cut so as to be continuous. After that, it becomes possible to cut so as to be continuous with the second orthogonal portion 21bb. In the present embodiment, one end of the connecting portion 21e is arranged on the straight line La, and the other end of the connecting portion 21e is arranged on the straight line Lb.

However, the connecting portion 21e is not necessarily limited to the shape shown in FIG. 2, and any connecting portion 21e may be used as long as it can smoothly cut between the cuts at the time of opening. Therefore, the connecting portion 21e does not have to be formed as one continuous notch, and a so-called "stop" connecting portion may be present in a part thereof. Further, each end of the connecting portion 21e does not have to reach the straight line La and the straight line Lb where the first orthogonal portion 21ba is located.

In the present embodiment, the first orthogonal portion 21ba and the second orthogonal portion 21bb have the same shape. Therefore, it may be collectively referred to as the orthogonal portion 21b. Further, the first skew portion 21ca and the second skew portion 21cc also have the same shape. Therefore, it may be collectively referred to as a skew portion 21c. The start portion 21a, the orthogonal portion 21b, the skew portion 21c, the end portion 21d, and the connecting portion 21e 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 dog-legged 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-shape". 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, the oblique portion 21c, and the connecting portion 21e are vertically symmetrical with respect to one virtual straight line Lc (not shown) extending in the longitudinal direction (horizontal direction in FIG. 2) of the concealing member. It is formed.

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, polyethylene films such as polycarbonate, cellophane, and polyethylene 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. 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 polycarbonate, cellophane, and polyethylene 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 adhesion suppressing 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 adhesion suppressing layer 2 is formed by printing ink. As the ink used for forming the adhesion suppressing layer 2, an ink having a high concealing property may be used in order to more reliably conceal the confidential information 5, but since the colored layer 7 is separately present, the ink does not contain a pigment. May be used.

The colored layer 7 is a layer formed on the opposite side of the coating base material layer 4 to the card base material 1. The colored layer 7 has a concealing layer 7a for concealing confidential information, a white layer 7b for further concealing the concealing layer 7a, and a pattern layer 7c. The concealing layer 7a, the white layer 7b, and the pattern layer 7c are laminated in this order from the coating base material layer 4 side. The concealing layer 7a can be composed of one layer or two or more layers. In the present embodiment, the concealing layer 7a has a two-layer structure of a first concealing layer 7aa and a second concealing layer 7ab.

As the pigment used for the ink forming each layer of the colored layer 7, a pigment having a high hiding property is used. For example, such highly concealing pigments include, for example, silver powder, aluminum powder, brass powder, metal powder such as 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 used for the ink forming each layer of the colored layer 7, a binder resin that retains the above-mentioned highly concealing pigment and has good adhesiveness to the coating base material layer 4 is selected and used, for example. , Natural rubber, or rubber-based natural resin such as rubber hydrochloride, polybutadiene, styrene-butadiene copolymer, acrylonitril-butadiene copolymer, polyisoprene, polychloroprene, acrylic, vinyl chloride, or vinyl chloride-vinyl acetate Use a polymer or the like. By forming the adhesion suppressing layer 2 using the ink containing the binder resin, the adhesive force of the pressure-sensitive adhesive layer 3 in the adhesion suppressing region 31 is weakened, and the confidential information 5 of the card base material 1 is combined with the pressure-sensitive adhesive layer 3. Can be prevented from coming into direct contact with.

In the present embodiment, the first concealing layer 7aa is black and the second concealing layer 7ab is silver. The first concealing layer 7aa may be formed in black, and the second concealing layer 7ab may be formed by, for example, black ink, silver ink obtained by inking metal powder, or the like by a known printing method such as offset printing, gravure printing, or silk screen printing. , May be printed multiple times to improve concealment. Further, the white layer 7b is formed by a known printing method such as offset printing, gravure printing, silk screen printing or the like, using a white ink using a pigment exhibiting white color among the above pigments. The pattern layer 7c is formed by forming black ink by a known printing method such as offset printing, gravure printing, and silk screen printing.

As the ink used for forming the adhesion suppressing layer 2, the ink having the composition used for the ink forming the concealing layer 7a, the white layer 7b, and the pattern layer 7c constituting the colored layer 7 as described above can be used. .. By forming the adhesion suppressing layer 2 using the ink containing the binder resin as described above, the adhesive force of the pressure-sensitive adhesive layer 3 in the adhesion suppressing region 31 is weakened, and the adhesive is added to the confidential information 5 of the card base material 1. It is possible to prevent the layer 3 from coming into direct contact. As the ink used for forming the adhesion suppressing layer 2 in the present embodiment, it is preferable that the ink contains a binder resin having a property of sufficiently weakening the adhesive force of the pressure-sensitive adhesive layer 3. The coating amount and coating thickness for forming the adhesion suppressing 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. 5 is a diagram showing an example of the concealing member sheet 20A according to the present embodiment. Of these, FIG. 5 (a) is a plan view seen from the pattern layer 7c (colored layer 7) side, and FIG. 5 (b) is a cross-sectional view corresponding to the line EE in FIG. 5 (a). be. In FIG. 5A, as in FIG. 1A, notches in the orthogonal portion 21b, the oblique portion 21c, the terminal portion 21d, and the like are omitted. The EE line corresponds to a position that covers the first confidential information 5a.

The release base material layer 6 has a strip-like shape that greatly extends in the longitudinal direction (left-right direction in FIG. 5A). Each of the concealing members 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. 5A, the concealing member sheet 20A has the concealing members 20 arranged at equal intervals on one surface of the peeling 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, polyethylene films such as polycarbonate, cellophane, and polyethylene 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. 5: the front side in the drawing in FIG. 5). 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. 6 is a flowchart showing a method of manufacturing an information hiding card according to an embodiment of the present disclosure. 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 adhesion suppressing 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, a coating method such as a gravure method, a spray coating method, or a flexographic method capable of relatively high speed can be used.

Next, the adhesive layer 3 is overlapped with the adhesive layer 3 to form the adhesion suppressing layer 2 in a pattern (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.

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 adhesion suppression layer 2 are formed (step S3). As the peeling base material layer 6, a surface on which the surface in contact with the adhesion suppressing layer 2 is previously subjected to a peeling treatment is used.

Subsequently, the colored layer 7 is formed on the surface of the coated base material layer 4 opposite to the peeled base material layer 6 (step S4). The colored layer 7 is formed in the order of the first concealing layer 7aa, the second concealing layer 7ab, the white layer 7b, and the pattern layer 7c from the coating base material layer 4 side. Each layer of the first concealing layer 7aa, the second concealing layer 7ab, the white layer 7b, and the pattern layer 7c can be formed by a known printing method such as offset printing, gravure printing, screen printing, and inkjet printing. For example, by screen printing, the first concealing layer 7aa is formed with black ink, the second concealing layer 7ab is formed with silver ink, the white layer 7b is formed with white ink, and the pattern layer 7c is formed with black ink. In the present embodiment, the first concealing layer 7aa, the second concealing layer 7ab, and the white layer 7b are formed by solid printing, and only the pattern layer 7c is formed in a pattern.

Further, from the side of the colored layer 7, the coating base layer 4 is penetrated to form a notch having a depth that does not reach the peeling base layer 6 (step S5). 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 (b) and 2 (c). 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. 5 can be obtained.

Next, confidential information is formed on the card base material (step S6). 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. When the first secret information 5a and the second secret information 5b are formed as the secret information 5 as in the present embodiment, even if either the first secret information 5a or the second secret information 5b is formed first. It may be formed at the same time. When either one is formed first, either the first confidential information 5a or the second confidential information 5b may be formed first. In the present embodiment, the first confidential information 5a and the second confidential information 5b are formed by gravure printing using black ink.

Next, using a label affixing machine called a labeler, the concealing member 20 composed of the adhesion suppressing layer 2, the adhesive layer 3, and the coating base material layer 4 is attached to the card base material 1 (step S7). 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 adhesion suppressing layer 2 and the colored layer 7. 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. 1, in the information hiding card 10, the adhesion suppressing region 31 and the colored layer 7 are formed so as to cover the secret information region 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 member 20 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. 7 is a diagram showing a state in which a part of the concealing member 20 of the information concealment card according to the present embodiment is separated and the concealed information area 35 is exposed. 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 pattern layer 7c 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 adjacent orthogonal portions 21b are continuous as cuts, so that the adhesion suppressing layer 2, the adhesive layer 3, the coating base material layer 4, and the coloring layer 7 in the adhesion suppressing region 31 are on one side (in FIG. 1A). It will be separated from the left side).

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 adhesion suppressing layer 2, the adhesive layer 3, the coating base material layer 4, and the colored layer 7 in the adhesion suppressing region 31 is formed. Completely separated. Then, as shown in FIG. 7, the confidential information area 35 is completely exposed. As a result, the confidential information 5 can be visually recognized from the front surface side.

As shown in FIG. 7, the pattern layer 7c remains as the uppermost layer of the colored layer at a position in contact with the second orthogonal portion 21bb in the portion overlapping the second concealed information region 35b in the longitudinal direction of the sticking position of the concealing member 20. When the pattern layer 7c is formed in a dark color such as black, as shown in FIG. 7, printing having the same darkness as the second secret information 5b formed in the second secret information area 35b is the second secret. It will remain in the vicinity of information 5b. However, since the second confidential information 5b is for humans to visually confirm, it can be distinguished from the pattern layer remaining at the position in contact with the second orthogonal portion 21bb. Therefore, the user can easily grasp the second confidential information 5b.

On the other hand, as shown in FIG. 7, the white layer 7b remains as the uppermost layer at a position in contact with the first orthogonal portion 21ba in the portion overlapping the first concealed information region 35a in the longitudinal direction of the sticking position of the concealing member 20. Since the white layer 7b is white, the print having the same darkness as the first secret information 5a formed in the first secret information region 35a does not remain in the vicinity of the first secret information 5a. When a two-dimensional code is formed as the first confidential information 5a as in the present embodiment, since there is no dark-colored part in the vicinity of the two-dimensional code, the two-dimensional code is erroneously recognized when the code reader reads it by machine. Is unlikely to do. Therefore, the recorded information of the first confidential information 5a can be easily acquired by the code reader.

When the uppermost layer of the colored layer 7 in the portion overlapping the first concealed information region 35a in the longitudinal direction of the concealing member 20 is not a white layer 7b but a dark color, when the concealing member 20 is separated, the first orthogonal portion 21ba The dark part remains as the top layer at the position in contact with. In this case, since there is a dark-colored portion in the vicinity of the two-dimensional code which is the first confidential information 5a, the dark-colored portion at the position in contact with the first orthogonal portion 21ba is two-dimensionally displayed when the code reader reads the machine. There is a risk of misidentifying it as part of the code. On the other hand, in the concealing member 20, the white layer 7b is formed as the uppermost layer of the colored layer 7 at the position overlapping the first orthogonal portion 21ba which is the notch, so that the first concealment information 5a is two-dimensional. It is possible to reduce the possibility of misrecognizing the code.

When the two-dimensional code is a QR code (registered trademark), it is necessary to make sure that there is no color similar to the dark color forming the QR code within 4 dots from the end of the QR code. If there is a dark-colored part within 4 dots from the end of the QR code, the QR code may not be read accurately. This "dot" is the smallest unit that constitutes the QR code, and the actual print size differs depending on the size of the entire QR code. For example, the QR code has a length x width of 37 dots x 37 dots and a QR code of 41 dots x 41 dots. The size of one dot is often about 0.25 mm to 0.29 mm. When a two-dimensional code is used as the first secret information 5a, it is preferable that the inside of the rectangle widened by 4 dots in all directions from the range including all the first secret information 5a is the first secret information area 35a.

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 so that it can be used.

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, authentication using the password is performed, and a predetermined service corresponding to the card number and commensurate with the monetary value is used. Processing such as setting to be possible is performed. Then, the user who purchased the information hiding card 10 can receive the service corresponding to the monetary value.

When two types of confidential information are recorded as the confidential information 5 as in the present embodiment, authentication can be performed by two methods according to each confidential information. When the second confidential information 5b, which is visible information, is used, the information is visually grasped as described above, and the recognized confidential information is used as a password or the like for authentication by a computer on the network.

On the other hand, when the first confidential information 5a, which is machine-readable information, is used, the recorded information is read from a two-dimensional code or the like by a code reader. Then, the computer performs a predetermined process using the read recorded information, and the computer on the network authenticates using the read recorded information as a password or the like. In the two-dimensional code, the URL of the access destination, the instruction for launching the browser for access, and the like can be recorded. In this case, the user can access the computer on the network and receive the service only by reading the first confidential information 5a with the code reader.

The second confidential information 5b can be recorded in the first confidential information 5a. For example, as shown in FIG. 7, when the second confidential information 5b is a visible character string "A123456789", "A123456789" is recorded as the recording information in the first confidential information 5a, which is a two-dimensional code. Can be done. In this case, when the first confidential information 5a is read by the code reader, the recorded character information "A123456789" can be acquired. As described above, when the first confidential information 5a also records the URL of the access destination, when the first confidential information 5a is read by the code reader, the computer or the like connected to the code reader is identified by the URL. After accessing a computer on the network, it is also possible to perform a process of automatically inputting a recorded character string.

Although the preferred embodiment of the present disclosure has been described above, the present disclosure is not limited to the above embodiment, and various modifications can be made. For example, in the above embodiment, two types of confidential information, the first confidential information and the second confidential information, are used as the confidential information. However, only the first confidential information may be used as the confidential information.

Further, in the above embodiment, the information is recorded and a machine-readable two-dimensional code is used as the first confidential information, but the two-dimensional code is not limited to the two-dimensional code, and other code information such as a one-dimensional bar code can be used. You may use it.

Further, in the above embodiment, visible confidential information other than the code information may be used as the first confidential information.

Further, in the above embodiment, a part of a so-called single Y-shaped notch is concealed between the confidential information area and the adhesive area as an opening assisting portion in the adhesive suppressing area where the adhesive suppressing layer and the colored layer are formed. It was formed intermittently along the longitudinal direction of the member. However, any form may be used as long as the 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 information hiding card is used as a POSA (Point of Sales Activation) card, but a scratch card for lottery, a gift card, a prepaid card, a POSA card (registered trademark), an electronic money card, etc. are kept secret. It can be used as various cards to hide information.

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 ... Adhesion suppression layer 3 ... Adhesive layer 4 ... Covering base material layer 5 ... Concealment information 5a ... 1st concealment information 5b ... 2nd concealment Information 6 ... Peeling base material layer 7 ... Colored layer 7a ... Concealing layer 7aa ... 1st concealing layer 7ab ... 2nd concealing layer 7b ... White layer 7c ... Pattern layer 10・ ・ ・ Information concealment card 20 ・ ・ ・ Concealment member 20A ・ ・ ・ Concealment member sheet 21 ・ ・ ・ Opening auxiliary part 21a ・ ・ ・ Start part 21b ・ ・ ・ Straight part 21ba ・ ・ ・ First straight part 21bb ・ ・ ・2nd orthogonal part 21c ・ ・ ・ oblique part 21ca ・ ・ ・ 1st skew part 21cc ・ ・ ・ 2nd skew part 21d ・ ・ ・ end part 22 ・ ・ ・ edge notch 31 ・ ・ ・ adhesion suppression area 32・ ・ ・ Adhesive area 33 ・ ・ ・ Picking part 35 ・ ・ ・ Concealed information area 35a ・ ・ ・ 1st concealed information area 35b ・ ・ ・ 2nd concealed information area 40 ・ ・ ・ Code information

Claims (7)

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, and
An adhesion suppressing layer formed so as to be overlapped with the surface of the pressure-sensitive adhesive layer on the card substrate side,
It has a colored layer formed on the surface of the coating base material layer opposite to the card base material side.
In the concealing member, the pressure-sensitive adhesive layer is an adhesive region that is a region that does not overlap with the adhesion-suppressing layer in the formed region, and a region that overlaps with the adhesion-suppressing layer in the formed region. Has an adhesion suppression region that is
The concealing member is attached to the card base material in the adhesive region.
In the adhesion suppressing region of the concealing member, there is a concealment information region in which the concealment information of the card base material is formed.
In the concealing member, notches penetrating the concealing member along the longitudinal direction of the concealing member are intermittently formed in at least a part of the concealment information region at the boundary between the concealment information region and the adhesive region. ,
An information hiding card in which a white layer is formed as the uppermost layer of the colored layer at a position overlapping the notch. The information hiding card according to claim 1, wherein the secret information includes at least the first secret information, which is the first secret information, and the second secret information, which is the second secret information. In the concealing member, a notch penetrating the concealing member is intermittently formed between the first concealment information region in which the first concealment information is formed and the adhesive region along the longitudinal direction of the concealing member. , The information hiding card according to claim 2. In the concealing member, a notch penetrating the concealing member is intermittently formed between the second concealment information region in which the second concealment information is formed and the adhesive region along the longitudinal direction of the concealing member. , The information hiding card according to claim 3. The width of the adhesive region formed at a position sandwiching the first concealed information area in a direction intersecting the longitudinal direction of the concealing member is the concealment of the adhesive region formed at a position sandwiching the second concealed information region. The information hiding card according to claim 4, which is smaller than the width in the direction intersecting the longitudinal direction of the member. The information hiding card according to any one of claims 2 to 5, wherein the first secret information is a two-dimensional code that records predetermined information. A concealing 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
A coating base material layer for covering confidential information, which is information to be confidential, and
An adhesive layer formed on one surface of the coating base material layer and
An adhesion suppressing layer formed over the pressure-sensitive adhesive layer and
It has a colored layer formed on the surface of the coating base material layer opposite to the pressure-sensitive adhesive layer, and in the concealing member, the pressure-sensitive adhesive layer suppresses adhesion in the formed region. It has an adhesive region that is a region that does not overlap with the layer, and an adhesion suppression region that is a region that overlaps with the adhesion suppression layer in the formed region.
In the concealing member, notches penetrating the concealing member along the longitudinal direction of the concealing member are intermittently formed in at least a part of the adhesion suppressing region.
A concealing member sheet in which a white layer is formed as the uppermost layer of the colored layer at a position overlapping the notch.

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