JP2007261099A - Information hiding sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information hiding sheet capable of obtaining a duplicate without a complicated operation. <P>SOLUTION: The problem is solved by the information hiding sheet in which a duplicating sheet 2 being an upper paper and a base sheet 1 being a lower paper are laminated and arranged so that a hiding information entering part 30 and a duplicate entering part 30 are overlapped, and are stuck together so as to be releasable with a pressure-sensitive adhesive part 20 and a releasing processing part 21. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an information hiding sheet capable of hiding information entered on a sheet surface.

The information concealment sheet can be put into the information concealment state after the concealment information is entered on one side and then the folded state is maintained with the entry surface as the inner side, and the information is read by releasing the folded state as necessary. For example, it is often used as an information hiding postcard when personal information or an account number is entered and mailed to various reporting institutions.
In such information concealment postcards, once entered into a folded state, the writer himself / herself cannot confirm the entry information, so there is a desire to keep a copy of the entry contents. An information concealment sheet configured so as to obtain a memorandum has been proposed (Patent Documents 1 to 3 below).
JP 7-144491 A JP 2005-254585 A

However, in the above-mentioned Patent Document 1, the paper to be used as a memorandum is separate from the paper on which the concealment information is to be written. This requires a complicated operation for arranging the two.
Patent Document 2 also requires a cumbersome operation of once separating the copy from the base paper and placing it on the concealment information entry section when entering the concealment information.
Therefore, a main object of the present invention is to provide an information hiding sheet that is easy to manufacture and that can easily obtain a copy of the hiding information without complicated operations.

The present invention that has solved the above-described problems and the effects thereof are as follows.
<Invention of Claim 1>
An information concealment sheet comprising a base sheet that is folded via a fold line, and a copy sheet that is arranged on the base sheet,
The base sheet is a middle sheet or lower sheet having a developer layer on the copy sheet facing surface, and the copy sheet is a middle sheet or upper sheet having a color developer layer on the base sheet facing surface,
A concealment information entry portion is formed on the copy sheet facing surface of the base sheet, a memorandum entry portion is formed on the non-facing surface of the copy sheet, and the concealment information entry portion and the memorandum entry portion overlap each other. And
An adhesive part is formed on the peripheral side of the concealment information entry part of the base sheet, a part facing at least the adhesive part of the copy sheet is a release processing part, and the adhesive part and the release processing part The copy sheet and the base sheet are bonded to each other so that they can be separated or separated.
An information concealment sheet characterized by that.

(Function and effect)
The information concealment sheet of the present invention is such that the base sheet is an upper sheet or a middle sheet, the copy sheet is a middle sheet or a lower sheet, and the copy sheet and the base sheet can be peeled off by an adhesive part and a release processing part. Are integrated in advance. In this integrated state, the concealment information entry part of the base sheet and the copy entry part of the copy sheet overlap each other. Therefore, without the troublesome work of placing the copy sheet over the required location, the information entered with the pressure applied to the note entry part is transferred to the concealment information entry part of the base sheet, and the note Is created.
In addition, in the information concealment sheet of the present invention, the copy sheet also has a function of protecting the adhesive portion, and when the copy sheet is peeled off from the base sheet after the information is entered, the copy sheet is exposed and the adhesive portion exposure operation of the base sheet is simultaneously performed. Done. And if a base sheet is folded in the adhesion part exposure state, the area | region divided by the said adhesion part will adhere | attach, and entry information will be concealed.

<Invention of Claim 2>
The copy sheet is an intermediate sheet, and another copy sheet made of an upper sheet or an intermediate sheet is arranged on the non-facing side of the copy sheet. The information concealment sheet according to claim 1, wherein the information concealment sheet is provided so that it can be peeled off, and another recording entry part is provided at a position overlapping with the concealment information entry part of the other copy sheet.

(Function and effect)
Two copies can be obtained at the same time, which is suitable when it is necessary to obtain two copies.

<Invention of Claim 3>
Position where the base sheet is middle paper and another copy sheet consisting of middle paper or lower paper is placed on the copy sheet non-facing side of this base sheet and overlaps with the concealment information entry part of the base sheet of this other copy sheet The other copy sheet is provided on the other sheet, and the other copy sheet is bonded to the base sheet so as to be peeled off or separable at a portion other than the other note entry section. Information hiding sheet.

(Function and effect)
Similarly to the invention according to claim 2, two copies can be obtained at the same time, which is suitable when it is necessary to obtain two copies.

<Invention of Claim 4>
The concealment information entry part and the adhesive part are provided in one area of the two areas separated by the folding line of the base sheet, and the copy sheet is arranged so as to cover only the one area. The information concealment sheet according to any one of the above.

(Function and effect)
Since the copy sheet is arranged only in a part of the area, the cost is reduced.

<Invention of Claim 5>
The concealment information entry part and the adhesive part are provided in one area of the two areas separated by the fold line of the base sheet, and the one area is overlapped with the one area when folded at at least the fold line of the other area The information concealment sheet according to any one of claims 1 to 4, wherein a re-peeling adhesive portion that is detachably bonded to the surface is provided.

(Function and effect)
By providing a re-removable adhesive portion that can be re-removed in one of the two regions where the concealment information entry portion is not disposed, the overlapping portion can be peeled and adhered. Therefore, the concealability is further improved, and, for example, in a folded state, a postcard state can be used instead of a cylindrical envelope state, and a cost merit at the time of mailing can be received as a postcard on the postal law.

<Invention of Claim 6>
After separating the copy sheet from the base sheet, when the base sheet is folded at the fold line, there is an easy separation line for separating the part bonded by the adhesive part from the other part. The information hiding sheet according to claim 1, wherein the information hiding sheet is formed on the sheet.

(Function and effect)
Opening becomes easy, and it becomes easy to read the information entered in the concealment information entry part.

  As described above, according to the present invention, there is provided an information concealment sheet that is easy to manufacture and can easily obtain a copy of the same content as the concealment information without complicated operations.

Next, embodiments of the present invention will be described in detail below with reference to the drawings.
<First Embodiment>
FIG. 1 shows a plan view of the information hiding sheet X1 of the present embodiment. The II-II arrow line view is shown in FIG. The information concealment sheet X1 of this embodiment includes a base sheet 1 that is folded via a fold line L1 and a copy sheet 2 that is disposed on the base sheet 1 in an overlapping manner. FIG. 1 shows a state where the copy sheet 2 is partially peeled from the base sheet 1.

  The fold line L1 is a line drawn by printing, a perforation line, a crease line, a low basis weight line in which a low basis weight portion is arranged in a line shape, etc., especially if it becomes a mark at the time of folding. The embodiment is not limited. A perforation line, a crease line, and a low basis weight line that facilitate folding are preferable.

  The base sheet 1 of the present embodiment has a size in which two postcard-sized sheets are connected side by side via a fold line L1. When folded so that each area is overlapped by the fold line L1, one postcard is obtained. It becomes size.

  On the other hand, the copy sheet 2 has the same size as that of the base sheet 1 and is arranged so as to be exactly overlapped with the base sheet 1 along the edges.

  The base sheet 1 is formed of a middle sheet or a lower sheet of pressure-sensitive copying paper, and includes a developer layer 11 on the copy sheet 2 facing surface. The developer layer 11 is obtained by applying a developer on the original sheet P1. Here, the raw material of the original sheet P1 provided with the developer layer is not particularly limited. Either recycled paper made from used paper or non-recycled paper made from virgin pulp may be used. Alternatively, synthetic paper may be used.

The basis weight of the base sheet 1 is not particularly limited. What is necessary is just to be able to ensure the opacity to the extent that the concealment information is not visible through the opposite surface. Considering the convenience of later mailing and handling, and the copying function described later, it is desirable to set it to about 50 to 80 g / m ² .

  The copy sheet 2 is formed of an upper sheet or a middle sheet of pressure-sensitive copy sheets, and has a color former layer on the surface facing the base sheet 1. Here, the material of the original sheet P2 on which the color former layer is provided is not particularly limited. Similar to the original sheet of the base sheet 1, it may be either recycled paper made from waste paper or non-recycled paper made from virgin pulp. Alternatively, synthetic paper may be used.

The basis weight of the copy sheet 2 is not particularly limited. However, it is desirable that the basis weight be lower than that of the base sheet 1 in consideration that the entry information can be easily transferred even at a low writing pressure in order to ensure copying on the base sheet 1. Particularly preferably, it is about 30 to 60 g / m ² .

  The developer and color former used for the base sheet 1 and the copy sheet 2 can be appropriately selected from known combinations used for known pressure-sensitive copying papers. The method of applying the color former and developer to each original sheet is a known method. The developer layer, the color former in the color developer layer, and the developer may be encapsulated in microcapsules.

  On the other hand, as shown in FIG. 1, the information concealment sheet X1 is provided with a memorandum entry portion 31 on the non-facing surface of the base sheet 1 of the copy sheet 2, and as shown in FIG. A concealment information entry unit 30 is formed on the surface of the copy sheet 2 facing one. The concealment information entry unit 30 and the note entry unit 31 are in an overlapping position. When information is written in the note entry unit 31 of the copy sheet 2 using a writing instrument such as a pencil or a ballpoint pen, It is transferred to the concealment information entry unit 30 by the pressure-sensitive copying function.

  Here, the memorandum entry unit 31 and the concealment information entry unit 30 are frame fields and titles provided for convenience so that the entry person or reader can recognize the entry contents and entry place, and printing such as offset printing is possible. Printed on each sheet in advance by a machine.

  In the form shown in the figure, the memorandum entry part 31 and the concealment information entry part 30 are formed offset to one area B of the two areas A and B separated by folding lines. Need not be offset as such.

  On the other hand, as is apparent from FIG. 3, adhesive portions 20, 20... Are formed on the sheet peripheral side of the concealment information entry portion 30 of the base sheet 1. In this embodiment, the adhesive portions 20, 20... Are arranged in a dotted line shape over the entire periphery of the base sheet 1. However, the adhesive portions 20 are not necessarily in a dotted line shape, and may be arranged in a solid line shape over the entire peripheral edge portion. The distance in the case of a dotted line is also not particularly limited, but the adhesive strength to the copy sheet 1 or the adhesive strength between areas A and B via a fold line to be described later is adjusted by appropriately changing the dotted line spacing as a dotted line. Can do. Here, the range of the peripheral portion differs depending on the sheet size, but if the sheet is a postcard size to B5 size, the range from the paper edge to about 2 mm to 15 mm is the peripheral portion.

The adhesive part 20 can be provided by application of an adhesive. As the pressure-sensitive adhesive, a non-peelable material having a relatively strong adhesive force can be suitably used. For the application of the pressure-sensitive adhesive, a conventionally known method such as a roll pattern transfer method or a gravure coating method can be used. The application amount of the pressure-sensitive adhesive is appropriately changed depending on the type of pressure-sensitive adhesive to be used, but is preferably ² to 40 g / m ² in terms of dry weight.

  Specific examples of the pressure-sensitive adhesive include natural rubber-based, acrylic-based, silicon-based, polyurethane-based, and polyester-based pressure-sensitive adhesives. Moreover, an organic solvent system and an emulsion system may be sufficient. As the acrylic pressure-sensitive adhesive, the main component is, for example, an acrylic ester homopolymer, a copolymer containing two or more acrylic ester units, and a copolymer of an acrylic ester and another functional monomer. What contains at least 1 sort (s) chosen from is used. Examples of the acrylic ester include (meth) acrylic acid butyl ester, (meth) acrylic acid pentyl ester, (meth) acrylic acid hexyl ester, (meth) acrylic acid heptyl ester, (meth) acrylic acid octyl ester, (meth ) Acrylic acid nonyl ester, (meth) acrylic acid decyl ester and the like. Examples of the functional monomer include hydroxyl group-containing monomers such as (meth) acrylic acid hydroxyethyl ester and (meth) acrylic acid hydroxypropyl ester, and amides such as (meth) acrylamide and dimethyl (meth) acrylamide. Examples thereof include group-containing monomers and carboxylic acid group-containing monomers such as (meth) acrylic acid. The acrylic pressure-sensitive adhesive has alkali solubility, water solubility, or water redispersibility so as not to cause inconveniences in the disaggregation process and recycling process in the recycling process of the paper to which it is attached. Can also be used. The rubber-based pressure-sensitive adhesive is selected from, for example, natural rubber, polyisoprene rubber, polyisobutylene, polybutadiene rubber, styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer as a main component. Those containing at least one selected from the above are used.

  These pressure-sensitive adhesives are blended with a tackifier, a crosslinking agent, a filler and the like as desired. Examples of the tackifier include natural resins such as rosin resins and polyterpene resins, and synthetic resins such as C5, C9, DCPD petroleum resins, coumarone indene resins, and xylene resins. Examples of the crosslinking agent include polyisocyanate compounds, epoxy resins, melamine resins, urea resins, metal chelate compounds, metal salts and the like. Examples of the filler include zinc white, titanium oxide, silica, calcium carbonate and the like.

  On the other hand, as shown in FIGS. 1 and 2, a release processing section 21 is provided at a portion facing the adhesive section 20 of the copy sheet 2. Note that the mold release processing unit 21 may be provided in a range other than the part facing the adhesive unit 20 as long as it does not hinder the transfer of entry information.

The mold release processing unit 21 can be formed by applying a release agent to the appropriate portion of the copy sheet 2 at about 0.1 to 2.5 g / m ² prior to bonding with the base sheet 1. As the release agent, known release agents such as silicon, long-chain alkyl polymer, polyolefin, alkyd resin, fluorine compound and the like can be used. The release agent can be applied by coating with various conventional coating machines such as an air knife coater, a blade coater, a rod metering coater, a curtain coater, and a roll coater. In particular, printing coating by various printing such as offset printing, gravure printing, letterpress printing, and intaglio printing, in which it is easy to appropriately adjust the application amount and distribution of the release agent by pattern printing or solid printing, is preferable.

  The copy sheet 2 and the base sheet 1 are detachably bonded to each other by adjusting the adhesive force between the adhesive portion 20 and the release processing portion 21 described above. Here, the peel strength (adhesive strength) between the adhesive portion 20 and the mold release processing portion 21 should be 3 to 25 N / 50 mm in the measurement of the 180-degree peeling adhesive strength in 10 of JIS Z 0237. Is preferred.

<Usage example of the first embodiment>
Next, a usage example of the information hiding sheet X1 according to the first embodiment will be described. First, as shown in FIGS. 1 and 2, in the state in which the base sheet 1 and the copy sheet 2 are integrated by adhesion with the adhesive portion 20 and the mold release processing portion 21, a rewrite entry portion of the copy sheet 2. In 31, necessary information is entered in such a manner that information is entered with pressure such as ballpoint pen writing or pencil writing. At this time, at the portion where the pressure is applied to the color former of the color former layer existing on the surface facing the base sheet 1 of the copy sheet 2 and the color developer on the color developer layer facing the copy sheet 2 of the base sheet 1. In response, the same information as the entry contents is developed in color on the base sheet 1 to be copied. Here, as described above, since the memorandum entry unit 31 and the concealment information entry unit 30 overlap each other, the information entered in the memorandum entry unit 31 is entered in the concealment information entry unit 30 as it is.

  When the entry of necessary information in the memorandum entry section 31 is completed, the copy sheet 2 is then peeled off from the base sheet 1 to expose the adhesive section 20 of the base sheet 1 as shown in FIG. At this time, since the copy sheet 2 is bonded to the adhesive portion 20 of the base sheet 1 via the mold release processing portion 21, it can be easily peeled off and separated from the base sheet 1. At this time, the same information is written on the copy sheet 2 and the base sheet 1 which are separated and separated by the copying function using the color former and the developer. It will function as a copy. After this, the memorandum etc. may be kept by the writer etc. as necessary.

  If the adhesive part 20 of the base sheet 1 is exposed, two regions A and B separated through the first fold line L1 of the base sheet 1 are arranged so that the concealment information entry part 30 becomes the inner surface at the fold line L1. Then fold it. When folded in this way, as shown in FIG. 4 and FIG. 5 which is a VV arrow view thereof, the overlapping regions A and B are bonded together via the adhesive portion 20 and entered in the concealment information entry portion 30. The content is hidden. In this embodiment, as shown in FIG. 3, the adhesive portion 20 is disposed over the entire peripheral edge portion of the base sheet, so that it becomes a three-way closed sealing bag body. Therefore, in this embodiment, it is possible to enclose, for example, a document or the like in a space formed inside when folding.

  After concealing the information entered in the concealment information entry unit 30, the postal address is entered on the outer surface as necessary, and sent to a desired institution or recipient by mail or the like. In this embodiment, as shown in FIG. 4, the mailing address information is pre-printed on the half face of the surface of the base sheet 1 where the concealment information entry portion 30 is provided, and the adhesive portions 20 adhere to the areas A and B. A mail envelope is formed.

  The person who should see the concealment information such as the receiving organization or the recipient who has received the information concealment sheet (envelope for mailing) that has been mailed according to the mailing address information peels off the bonded part, and FIG. Confirm the information as the spread state as shown in. At this time, since the adhesive used for the adhesive part is non-peelable, a part of the surface of the paper is peeled off to form a peeling mark 23 when it is peeled off from the paper that has not been subjected to the release treatment. The Whether or not the opening operation has been performed by a third party can be confirmed based on the presence or absence of the peeling marks 23.

  As described above, the information concealment sheet X1 of the present embodiment can be handed over to a desired partner in a state of concealing information, and can obtain a copy of the content that has been extremely easily delivered.

<Second Embodiment>
Next, a second embodiment X2 will be described. This embodiment X2 is an example in which a re-peelable adhesive portion 22 that can be re-peeled is provided on the base sheet 1. The configuration of the copy sheet 3 is substantially the same as that of the first embodiment, but it is desirable that the portion facing the portion where the re-peeling adhesive portion 22 is provided is subjected to a release treatment.

  The base sheet 1 according to the second form X2 is concealed in one area B via the folding line L1, as shown in FIG. 7 and FIG. 8 which is a view taken along the line VIII-VIII of FIG. An information entry part 30 is provided, and a removable adhesive part 22 is provided in the other area A opposite to the area B where the concealment information entry part 30 is provided.

  The re-peeling adhesive part is formed by applying a peelable adhesive such as a peelable pressure-sensitive adhesive disclosed in JP-A-2003-27026 and JP-A-2004-217838, or an acrylic copolymer aqueous emulsion containing an alkyl acrylate ester. be able to.

  In addition, after applying a non-peeling adhesive such as an emulsion-based strong adhesive, rubber-based adhesive, solvent-based adhesive, etc., a paste-killing agent or a release agent is applied by a method such as halftone dot printing. It can also be provided by a method of suppressing the adhesive force to such an extent that it can be re-peeled from the object to be bonded (coated paper in this embodiment).

  On the other hand, as in the first embodiment X1, the base sheet 1 is provided with adhesive portions 20 in dotted lines on the entire periphery. In FIG. 8, the adhesive portion 20 is formed on the re-peeling adhesive portion 22. For example, an adhesive for providing the adhesive portion 20 is applied to the entire surface of the region B that does not have the concealment information entry portion 30. Then, the adhesive part 20 and the re-peeling adhesive part 22 share the pressure-sensitive adhesive layer so as to suppress the adhesive force by printing a paste-killing agent or the like only on the site to be the re-peeling adhesive part 22 thereafter. Good.

  Various adhesives can be applied by coating with various conventional coating machines such as an air knife coater, a blade coater, a rod metering coater, a curtain coater, and a roll coater. Moreover, application | coating of a paste killing agent etc. can be suitably performed by printing application | coating by roll transfer, gravure printing, etc. Moreover, as a mold release agent which suppresses adhesive force, mold release agents, such as a silicon | silicone, a long-chain alkyl polymer, polyolefin, an alkyd resin, a fluorine compound, can be used.

  Further, in the present embodiment X2, a perforation line (easy separation line) L2 that can separate the adhesive portion 20 from other portions is provided. The perforation line L2 is provided symmetrically with respect to the folding line L1, and when the two areas AB separated by the folding line L1 are overlapped, the perforation lines in both areas overlap L2, and the base sheet When 1 is folded at a fold line L1 to be in a folded state, it is possible to separate a portion bonded by the adhesive portion 20 from other portions.

  The perforation line L2 is a line that assists in separating the adhesive portion and other portions, such as a perforation processing line, a low basis weight line, a crease line, and the like, and can be provided by a known processing method.

  In the present form X2, when it is folded and folded at the fold line L1, the re-peeling adhesive portion 22 adheres to the concealment information entry portion surface in a peelable manner, so that an apparent postcard in the information concealment state It becomes possible to treat it as a postcard in the postal code. Then, when viewing the concealed information, the perforation line L2 is cleaved and bonded by the adhesive portion 20 to separate the portions, and then the surfaces bonded by the re-peeling adhesive portion 22 are drawn. Remove and read the information.

<Third Embodiment>
Next, a third embodiment will be described. The third embodiment X3 is a form in which the copy sheet 2 covers a part of the base sheet 1 as shown in FIGS.

  In the present embodiment X3, the copy sheet 2 is arranged so as to cover only one area B which is divided via the fold line L1 of the base sheet 1.

  The adhesive portion 20 is provided only in the peripheral portion on the region B side covered with the copy sheet 2 of the base sheet 1 and is not provided in the other region A. Thus, even if the adhesive part 20 is only one area B, when it is in the folded state, both areas A and B are bonded via the adhesive part 20, so the information entered in the concealment information entry part 30 without any problem is Concealed.

  The base sheet 1 is a middle sheet or a lower sheet having a developer layer 11 on the copy sheet 2 facing surface, and the copy sheet is a middle sheet or an upper sheet having a color developer layer 12 on the surface facing the base sheet. This is the same as the first and second embodiments X1 and X2.

  In addition, a memorandum entry unit 31 is disposed on the surface of the copy sheet 2 that is not facing the base sheet 1, and the concealment information entry unit 30 is located at a position overlapping the memorandum entry unit 31 on the surface of the base sheet 1 that faces the copy sheet 2. This is also the same as in the first and second embodiments X1 and X2.

  Other configurations such as the type of pressure-sensitive adhesive to be used and the release processing section of the copy sheet are the same as those in the first and second embodiments X1 and X2.

<Fourth embodiment>
In the fourth embodiment, a plurality of copy sheets are provided. The fourth embodiment is the same as the third embodiment in plan view.

  The laminated structure of the first example X4 of this embodiment is shown in FIG. In this example X4, a copy sheet (also referred to as a first copy sheet) 2 that directly faces the base sheet 1 is used as a medium sheet, and another copy sheet (also referred to as a second copy sheet) consisting of a medium sheet or an upper sheet is formed thereon. ) 2A are arranged in an overlapping manner. The relationship between the first copy sheet 2 and the base sheet 1 is the same as that described above.

  The second copy sheet 2A has a color former layer 12 on the side facing the first copy sheet 2, and, like the first copy sheet 2, a memorandum entry section (also called a second memorandum entry section) is concealed. It is placed in a position overlapping the information entry area.

  A weak adhesive portion having a weak adhesive force is disposed at a position off the memorandum entry portion of the first copy sheet 2, and a position overlapping the weak adhesive portion of the second copy sheet 2A is subjected to a mold release process. As a result, the first copy sheet 2 and the second copy sheet 2A are integrated in a peelable state in the same manner as the bonding mode of the base sheet 1 and the first copy sheet 2 described above.

  Accordingly, when information is entered into the second copy entry portion of the second copy sheet 2A with pressure using a writing instrument such as a ballpoint pen, information is simultaneously sent to the copy entry portion of the first copy sheet 2 and the concealment information entry portion of the base sheet 1. Filled in.

  After the information is entered, the first and second copy sheets 2 and 2A are peeled off from the base sheet 1 as a memorandum, and the base sheet 1 is entered in the folding concealment information entry section via the folding line L1. Conceal information.

  In addition, the weak pressure-sensitive adhesive part is a pressure-sensitive adhesive in which the adhesive force is lowered by applying a halftone dot application mode, or a fine particle filler that suppresses the adhesive force is added to the strong pressure-sensitive adhesive. Or the like.

  Next, the stacked structure of the second example X5 of the fourth form is shown in FIG. In the second example X5, the base sheet 1 is a medium sheet, and a copy sheet (first copy sheet) 2 made of a medium sheet or an upper sheet is further disposed thereon, and the first copy sheet of the base sheet 1 is further arranged. This is an example in which another copy sheet (also referred to as a third copy sheet) 2B made of a middle sheet or a lower sheet is also placed on the opposite side of the surface on which 2 is disposed. The relationship between the first copy sheet 1 and the base sheet 2 is the same as that described above.

  The third copy sheet 2B has a developer layer 11 on the side facing the base sheet 1, and, as with the first copy sheet 2, a note entry section (also referred to as a third note entry section) is provided on the base sheet. 1 is arranged at a position overlapping the concealment information entry part on the face facing 1.

  Further, a weak adhesive portion having a weak adhesive force is disposed at a position off the third memorandum entry portion of the third copy sheet 2B, and a position overlapping the weak adhesive portion of the base sheet is subjected to a mold release process. . As a result, the base sheet 1 and the third copy sheet 2B are integrated in a peelable state in the same manner as the above-described bonding mode between the base sheet 1 and the first copy sheet 2. The weak adhesive portion is the same as in the first example.

  Therefore, when information is entered with pressure by a writing instrument such as a ballpoint pen in the writing entry portion of the first copy sheet 2, information is simultaneously given to the concealment information entry portion of the base sheet 1 and the third writing entry portion of the third copy sheet 2B. Is filled in.

  After the information is entered, the first and third copy sheets 2 and 2B are peeled off from the base sheet 1 to make a memorandum, and the base sheet 1 is entered in the folding concealment information entry section via a folding line. Conceal information.

  The present invention is a concealed postcard for filling in confidential information, credit card numbers and other information that is not desired to be known to unspecified persons and mailing them to specific institutions or companies, salary to be paid to salary recipients It can be used for the description.

It is a top view of the 1st form of the information concealment postcard concerning this invention. It is the II-II arrow directional view. It is a top view which shows the aspect which peeled the copy sheet. It is the top view of the state which folded up with the fold line and concealed the information. It is the VV arrow directional view. It is a top view of the state which peeled again in order to read information. It is a top view of the base sheet which has a re-peeling adhesive layer concerning a 2nd form. It is the VIII-VIII arrow directional view. It is a top view of the state which folded the sheet | seat of the 2nd form with the fold line, and concealed information. It is a top view of the 3rd form by which a part of base sheet is coat | covered with the copy sheet. It is the XI-XI arrow directional view. It is a front view of the 1st example of the form which has two copy sheets. It is a front view of the 2nd example of the form which has two copy sheets.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Base sheet, 2 ... Copy sheet, 2A ... 2nd copy sheet, 2B ... 3rd copy sheet, 11 ... Developer layer, 12 ... Color former layer, 20 ... Adhesive part, 21 ... Release process part, 22 ... Re-peeling adhesive part, 23 ... Peeling mark, 30 ... Concealment information entry part, 31 ... Note writing entry part, A ... Area A, B ... Area B, L1 ... Fold line, L2 ... Easy separation line, Y ... Mailing address Information, P1, P2 ... Original sheet, X1-X5 ... Information hiding sheet.

Claims (6)

An information concealment sheet comprising a base sheet that is folded via a fold line, and a copy sheet that is arranged on the base sheet,
The base sheet is a middle sheet or lower sheet having a developer layer on the copy sheet facing surface, and the copy sheet is a middle sheet or upper sheet having a color developer layer on the base sheet facing surface,
A concealment information entry portion is formed on the copy sheet facing surface of the base sheet, a memorandum entry portion is formed on the non-facing surface of the copy sheet, and the concealment information entry portion and the memorandum entry portion overlap each other. And
An adhesive part is formed on the peripheral side of the concealment information entry part of the base sheet, a part facing at least the adhesive part of the copy sheet is a release processing part, and the adhesive part and the release processing part The copy sheet and the base sheet are bonded to each other so that they can be separated or separated.
An information concealment sheet characterized by that.   The copy sheet is an intermediate sheet, and another copy sheet made of an upper sheet or an intermediate sheet is arranged on the non-facing side of the copy sheet. The information concealment sheet according to claim 1, wherein the information concealment sheet is provided so as to be peeled or separable and provided with another memorandum entry part at a position overlapping the concealment information entry part of the other copy sheet.   Position where the base sheet is middle paper and another copy sheet consisting of middle paper or lower paper is placed on the copy sheet non-facing side of this base sheet and overlaps with the concealment information entry part of the base sheet of this other copy sheet The other copy sheet is provided on the other sheet, and the other copy sheet is bonded to the base sheet so as to be peeled off or separable at a portion other than the other note entry section. Information hiding sheet.   The concealment information entry part and the adhesive part are provided in one area of the two areas separated by the folding line of the base sheet, and the copy sheet is arranged so as to cover only the one area. The information concealment sheet according to any one of the above.   The concealment information entry part and the adhesive part are provided in one area of the two areas separated by the fold line of the base sheet, and the one area is overlapped with the one area when folded at at least the fold line of the other area The information concealment sheet according to any one of claims 1 to 4, wherein a re-peeling adhesive portion that is detachably bonded to the surface is provided.   After separating the copy sheet from the base sheet, when the base sheet is folded at the fold line, there is an easy separation line for separating the part bonded by the adhesive part from the other part. The information hiding sheet according to claim 1, wherein the information hiding sheet is formed on the sheet.

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