JP2009032164A - Magnetic sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnetic sheet allowing use/disuse of a non-contact IC card or a selective change of the used non-contact IC card by selectively changing a folding direction in a state of holding a non-contact data reception/transmission body. <P>SOLUTION: This magnetic sheet 10 has a laminated sheet 14 including a metal base material 11, and a first magnetic layer 12 and a second magnetic layer 13 respectively provided on both faces of the metal base material 11, and is formed with bending areas 18, 19 segmenting the respective first magnetic layer 12 and second magnetic layer 13 into three areas, bendable to both the face sides of the laminated sheet 14 along a short side direction of the laminated sheet 14. The respective three areas of the first magnetic layer 12 and the second magnetic layer 13 are provided with holding parts 17 of the non-contact type data reception/transmission body on the opposite face sides to faces contacting with the metal base material 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

 The present invention is a non-contact type that can receive information from the outside and transmit information to the outside in a non-contact state using an electromagnetic wave as a medium, such as an information recording medium for RFID (Radio Frequency IDentification). A magnetic sheet for storing a non-contact type data receiving / transmitting body such as an IC card and preventing an error in writing / reading information with respect to the non-contact type data receiving / transmitting body. The present invention relates to a magnetic sheet capable of writing / reading information to / from a desired non-contact type data receiving / transmitting body while holding the non-contact type data receiving / transmitting body.

A non-contact type IC card, which is an example of a non-contact type data receiving / transmitting body, includes an inlet composed of a base material, an antenna provided on one surface thereof and connected to each other, and an IC chip. When an electromagnetic wave is received from the reading / reading device, an electromotive force is generated in the antenna by a resonance action, and the IC chip in the non-contact type IC card is activated by this electromotive force, and information in the IC chip is converted into a signal. Is transmitted from the antenna of the non-contact type IC card.
A signal transmitted from the non-contact type IC card is received by the antenna of the information writing / reading device, sent to the data processing device via the controller, and data processing such as identification is performed.

In recent years, such contactless IC cards have been increasingly used as electronic money in commuter passes and boarding tickets for public transportation such as trains and buses, and retail stores such as convenience stores and super stores. Accordingly, the number of contactless IC cards owned by individuals tends to increase.
Usually, the non-contact type IC card is used by being taken out from a wallet or a regular case as needed, or used in a state of being stored in a wallet or a regular case. In particular, when a plurality of non-contact type IC cards are used while being stacked in a wallet or a regular case, information may be erroneously written / read on the non-contact type IC card. There was a problem.

Therefore, conventionally, a plurality of card storage portions each storing a plurality of non-contact type IC cards are provided, a partition wall portion is provided between the card storage portions, a conductor portion is provided in the partition wall portion, and a conductor portion is provided in the partition wall portion. There is disclosed a non-contact type IC card holder provided with first and second magnetic bodies with a gap therebetween (see, for example, Patent Document 1).
Japanese Patent No. 3630006

 However, in the non-contact type IC card holder disclosed in Patent Document 1, however, in the non-contact type IC card holder disclosed in Patent Document 1, the folding direction is selectively changed so that the non-contact type IC card holder is not contacted. There was an inconvenience that the use of an IC card or the non-contact IC card to be used could not be selectively changed.

  The present invention has been made in view of the above circumstances, and in a state where the non-contact data receiving and transmitting body is held, by selectively changing the folding direction, whether or not the non-contact IC card can be used, or An object of the present invention is to provide a magnetic sheet capable of selectively changing a non-contact IC card to be used.

  The magnetic sheet of the present invention comprises a laminated sheet comprising a metal substrate and a first magnetic layer and a second magnetic layer provided on both surfaces of the metal substrate, respectively, the first magnetic layer and the second magnetic layer. Each of the layers is divided into three or more regions, and the magnetic sheet is provided with bending regions that can be bent on both sides of the laminated sheet along the short side direction of the laminated sheet. Each of the three or more regions of the magnetic layer and the second magnetic layer is provided with a holding portion for a non-contact type data transmitter / receiver on the surface opposite to the surface in contact with the metal substrate. And

  The magnetic sheet of the present invention comprises a laminated sheet comprising a metal substrate and a first magnetic layer and a second magnetic layer provided on both surfaces of the metal substrate, respectively, the first magnetic layer and the second magnetic layer. Each of the layers is divided into three or more regions, and the magnetic sheet is provided with bending regions that can be bent on both sides of the laminated sheet along the short side direction of the laminated sheet. Each of the three or more regions of the magnetic layer and the second magnetic layer is provided with a holding portion for the non-contact type data transmitter / receiver on the side opposite to the surface in contact with the metal substrate. The magnetic sheet is Z-folded or rolled with the region as a boundary, so that the non-contact type data receiving / transmitting body held in the region on the first magnetic layer side or the region on the second magnetic layer side is held. Selective use of contactless data receiver / transmitter Door can be. In other words, a non-contact type IC card can be replaced simply by winding a non-contact type data receiver / transmitter that is not used inside the magnetic sheet and placing the non-contact type data receiver / transmitter to be used on the outermost surface of the magnetic sheet. In addition, it is possible to write / read information only to a desired non-contact type IC card. Therefore, it is possible to prevent a loss of contactless IC card.

The best mode of the magnetic sheet of the present invention will be described.
This embodiment is specifically described for better understanding of the gist of the invention, and does not limit the present invention unless otherwise specified.

FIG. 1 is a schematic view showing an embodiment of the magnetic sheet of the present invention, in which (a) is a plan view and (b) is a cross-sectional view taken along line AA of (a).
The magnetic sheet 10 according to this embodiment includes a metal base 11, a first magnetic layer 12 provided on one surface 11a of the metal base 11, and a second magnetic layer 13 provided on the other surface 11b. And a first covering material 15 and a second covering material 16 that cover the entire surface of the laminated sheet 14 and a holding portion 17 that holds a non-contact type data receiving / transmitting body. ing.

Further, the magnetic sheet 10 is provided with curved regions 18 and 19 that allow the magnetic sheet 10 (laminated sheet 14) to be bent on both sides along the short side direction. The first magnetic layer 12 is divided into a first region 20, a second region 21 and a third region 22 with the curved regions 18 and 19 as a boundary, and the second magnetic layer 13 includes a fourth region 23, a fifth region. It is divided into a region 24 and a sixth region 25.
The curved regions 18 and 19 are formed by creases provided on the magnetic sheet 10, half slits, slits, perforations, etc. provided on one or both of the first covering material 15 and the second covering material 16. Yes.

  In addition, the holding portion 17 has positions corresponding to the four corners of the first region 20, the second region 21, and the third region 22 of the first covering material 15, that is, a surface in contact with the metal substrate 11 of the first magnetic layer 12. Is the opposite surface side, and the positions corresponding to the four corners of the fourth region 23, the fifth region 24 and the sixth region 25 of the second magnetic layer 13, that is, the surface in contact with the metal substrate 11 of the second magnetic layer 13. It is provided in a triangular bag shape on the opposite surface side.

  As the metal substrate 11, a cloth-like material produced by knitting a film-like, sheet-like, or fibrous metal made of a metal such as aluminum, silver, or copper is used.

The composite that forms the first magnetic layer 12 and the second magnetic layer 13 is roughly composed of a filler made of magnetic fine particles and a resin.
This composite is formed into a form in which magnetic fine particles are dispersed almost uniformly by applying and drying a magnetic paint containing a filler made of magnetic fine particles, a resin, an additive, and a solvent.

  Further, as the magnetic fine particles, powdered magnetic powder, or flat flakes obtained by forming the powder by refining the magnetic powder with a ball mill or the like and then mechanically flattening the powder The magnetic substance flake which consists of is mentioned. Among these, flat magnetic particles are preferable. If the magnetic fine particles are flat, a large number of magnetic fine particles constituting the first magnetic layer 12 and the second magnetic layer 13 are seen when the magnetic sheet 10 is viewed from the surface side of the first covering material 15 or the second covering material 16. , At least some of them overlap each other, and it is easy to form one adjacent magnetic body. Therefore, the antenna of the non-contact type data receiving / transmitting body in which the magnetic flux passes through the first magnetic layer 12 and the second magnetic layer 13 and is disposed on the first covering material 15 or the second covering material 16 side of the magnetic sheet 10. It becomes easy to be captured.

  Furthermore, examples of the magnetic powder include sendust (Fe—Si—Al alloy) powder, carbonyl iron powder, atomized powder such as permalloy, and reduced iron powder. Examples of the magnetic flakes include flakes obtained by refining the magnetic powder with a ball mill or the like and molding the powder, and then mechanically flattening the powder, or a molten iron-based or cobalt-based amorphous alloy. Examples include flakes obtained by colliding with a water-cooled copper plate. Among these, as the magnetic fine particles, magnetic powder or magnetic flakes made of Sendust are preferable, and magnetic flakes made of Sendust are more preferable. If the magnetic fine particles are magnetic powder or magnetic flakes made of sendust, the saturation magnetic flux density and magnetic permeability of the first magnetic layer 12 and the second magnetic layer 13 containing these as constituent elements are increased, so that the magnetic flux is further increased. It becomes easy to be captured by the antenna through the magnetic layer.

  Note that the shape of the magnetic fine particles forming the first magnetic layer 12 and the second magnetic layer 13 does not have to be either powdery or flat. The first magnetic layer 12 and the second magnetic layer 13 may be mixed with powdered magnetic fine particles and flat magnetic fine particles. Even if magnetic fine particles having different shapes are mixed, the magnetic sheet 10 is sufficiently effective.

Examples of the resin constituting the composite that forms the first magnetic layer 12 and the second magnetic layer 13 include thermoplastic resins, thermosetting resins, and reactive resins.
Examples of the thermoplastic resin include vinyl chloride, vinyl acetate, vinyl chloride-vinyl acetate copolymer, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-acrylonitrile copolymer, acrylate ester-acrylonitrile copolymer, acrylic. Acid ester-vinyl chloride-vinylidene chloride copolymer, acrylic acid ester-vinylidene chloride copolymer, methacrylate ester-vinylidene chloride copolymer, methacrylate ester-vinyl chloride copolymer, methacrylate ester-ethylene copolymer , Polyvinyl fluoride, vinylidene chloride-acrylonitrile copolymer, acrylonitrile-butadiene copolymer, polyamide resin, polyvinyl butyral, cellulose derivatives (cellulose acetate butyrate, cellulose diacetate, cellulose triacetate) , Cellulose propionate, nitrocellulose), styrene butadiene copolymer, polyurethane resin, polyester resin, amino resin, or polymers such as styrene rubber, fluorine rubber, silicone rubber, ethylene / propylene copolymer rubber And synthetic rubber materials.

  Examples of the thermosetting resin or reactive resin include phenol resin, epoxy resin, polyurethane curable resin, urea resin, melamine resin, alkyd resin, silicone resin, polyamine resin, urea formaldehyde resin, and the like.

  Moreover, in order to give adhesiveness to the 1st magnetic layer 12 and the 2nd magnetic layer 13, the various composites which comprise the 1st magnetic layer 12 and the 2nd magnetic layer 13 may be contained. .

  Examples of the additive contained in the magnetic coating used to form the composite that forms the first magnetic layer 12 and the second magnetic layer 13 include a viscosity modifier, an antifoaming agent, and a leveling agent.

  Furthermore, examples of the solvent contained in the magnetic paint include organic solvents such as cyclohexanone, acetone, benzene, and ethyl.

 As the 1st coating | covering material 15 and the 2nd coating | covering material 16, the thing of the film form or sheet form which consists of a transparent or opaque thermoplastic resin is used. Examples of such thermoplastic resins include polyester resins such as polyethylene terephthalate (PET), polycarbonate resins, polyamide resins, polyolefin resins such as polypropylene (PP) and polyethylene (PE), and acrylic resins. Can be mentioned.

 The holding portion 17 is provided by fusing or bonding a film-like or sheet-like base material made of a thermoplastic resin to the surface 15 a of the first covering material 15 and the surface 16 a of the second covering material 16. . As the thermoplastic resin constituting the base material, the same thermoplastic resin as the first covering material 15 and the second covering material 16 is used.

In order to manufacture the magnetic sheet 10 of this embodiment, first, the metal substrate 11 is coated by a coating method such as a spin coating method, a roll coating method, a spray coating method, a bar coating method, a dip coating method, or a flow coating method. A magnetic coating containing the above magnetic powder is applied to one surface 11a and the other surface 11b to form a coating film.
Next, the coating film is dried in the air or dried and heat-treated to form the first magnetic layer 12 and the second magnetic layer 13, and the metal substrate 11, the first magnetic layer 12 and the second magnetic layer 12. A laminated sheet 14 composed of the magnetic layer 13 is produced.

Next, after sandwiching the laminated sheet 14 by the first covering material 15 and the second covering material 16, (1) a laminate composed of the laminated sheet 14, the first covering material 15 and the second covering material 16, The first coating material 15 and the second coating material 16 are fused by hot pressure treatment, or (2) interposed between the laminated sheet 14 and the first coating material 15 and the second coating material 16. The adhesive is cured by heating, ultraviolet irradiation, electron beam irradiation, aging treatment (which is allowed to stand for a curing reaction over time), and the like, whereby the laminated sheet 14, the first coating material 15 and the second coating material are cured. 16 is integrated.
Furthermore, a holding part 17 is formed by fusing or bonding a film-like or sheet-like base material made of a thermoplastic resin to one surface 15a of the first covering material 15 and one surface 16a of the second covering material 16. The magnetic sheet 10 is obtained.

Next, the operation of the magnetic sheet of this embodiment will be described with reference to FIGS. 1 to 3 by taking as an example the case where a plurality of non-contact type IC cards are used as the non-contact type data receiving / transmitting body.
2 and 3 are schematic cross-sectional views showing how to use the magnetic sheet of this embodiment. 2 and 3, the first covering material 15 and the second covering material 16 shown in FIG. 1 are omitted in order to make the drawing easy to see.

(First usage)
The four corners of the non-contact type IC card (not shown) are inserted into the holding portion 17 provided on the one surface 15a of the first covering material 15, and the first area 20, the second area 21, and the third area 22 are non-contact type. While holding the IC card, the four corners of the non-contact type IC card (not shown) are inserted into the holding portion 17 provided on the one surface 16a of the second covering material 16, and the fourth area 23, the fifth area 24 and the sixth area A non-contact type IC card is held in the area 25.
Next, as shown in FIG. 2, the magnetic sheet 10 is bent with the curved region 18 as a boundary, and the fourth region 23 and the fifth region 24 are opposed to each other.
Next, the magnetic sheet 10 is bent with the curved region 19 as a boundary, the second region 21 and the third region 22 are opposed to each other, the magnetic sheet 10 is Z-folded, and the first region 20 and the sixth region 25 are formed on the outermost surface. Arrange.

In this state, when the antenna of the information writing / reading device is opposed to the non-contact type IC card held in the first area 20, the first magnetic layer 12 exists on the back side of the non-contact type IC card. Therefore, current flows through the antenna of the non-contact type IC card by electromagnetic induction from the information writing / reading device.
Then, when current flowing through the antenna of the non-contact type IC card is supplied to the IC chip of the non-contact type IC card, information is written from the information writing / reading device to the IC chip via the antenna, or The information written in the IC chip is read out by the information writing / reading device via the antenna.
Similarly, since the second magnetic layer 13 exists on the back side of the non-contact type IC card held in the sixth area 25, when the antenna of the information writing / reading device is opposed to this non-contact type IC card. Information can be written / read on the non-contact type IC card by electromagnetic induction from the information writing / reading device.

 On the other hand, the non-contact type IC card held in the second region 21, the third region 22, the fourth region 23, and the fifth region 24 that is folded inward is covered with the metal substrate 11. Therefore, even if the antenna of the information writing / reading device is opposed to the non-contact type IC card in the first area 20 or the sixth area 25, the second area 21, the third area 22, the fourth area 23, and the Information is not written to / read from the non-contact type IC card in the fifth area 24.

 In addition, since the metal base 11 exists between the non-contact type IC card in the first area 20 and the non-contact type IC card in the sixth area 25, information is written to one non-contact type IC card. When the antenna of the reading / reading device is opposed to the reading / writing device, information is not erroneously written / read on the other non-contact type IC card.

(Second usage)
The magnetic sheet 10 is bent with the curved region 18 as a boundary, and the first region 20 and the second region 21 are opposed to each other.
Next, the magnetic sheet 10 is bent with the curved region 19 as a boundary, the fifth region 24 and the sixth region 25 are opposed to each other, the magnetic sheet 10 is Z-folded, and the third region 22 and the fourth region 23 are formed on the outermost surface. Arrange.

  In this state, when the antenna of the information writing / reading device is opposed to the non-contact type IC card held in the third area 22 or the fourth area 23, the non-contact type is caused by electromagnetic induction from the information writing / reading apparatus. Information can be written / read to / from the IC card.

 On the other hand, even if the antenna of the information writing / reading device is opposed to the non-contact type IC card of the third area 22 or the fourth area 23, the first area 20, the second area 21, Information is not written to / read from the non-contact type IC card in the fifth area 24 and the sixth area 25.

  In addition, when the antenna of the information writing / reading device is opposed to one of the non-contact type IC card in the third area 22 and the non-contact type IC card in the fourth area 23, the information is written to the other side by mistake. No read / write is performed.

(Third usage)
As shown in FIG. 3, the magnetic sheet 10 is bent with the curved region 18 as a boundary so that the first region 20 and the second region 21 are on the outer surface side, and the fourth region 23 and the fifth region 24 are opposed to each other. .
Next, the magnetic sheet 10 is bent with the curved region 19 as a boundary, the first region 20 and the sixth region 25 are opposed, the magnetic sheet 10 is wound, and the second region 21 and the third region 22 are formed on the outermost surface. Arrange.

  In this state, when the antenna of the information writing / reading device is opposed to the non-contact type IC card held in the second region 21 or the third region 22, the non-contact type is caused by electromagnetic induction from the information writing / reading device. Information can be written / read to / from the IC card.

 On the other hand, even if the antenna of the information writing / reading device is opposed to the non-contact IC card in the second area 21 or the third area 22, the first area 20, the fourth area 23, Information is not written to / read from the non-contact type IC card in the fifth area 24 and the sixth area 25.

 Further, when the antenna of the information writing / reading device is opposed to one of the non-contact type IC card in the second area 21 and the non-contact type IC card in the third area 22, information writing is erroneously performed on the other side. No read / write is performed.

(Fourth usage)
The magnetic sheet 10 is bent with the curved region 19 as a boundary so that the second region 21 and the third region 22 are on the outer surface side, and the fifth region 24 and the sixth region 25 are opposed to each other.
Next, the magnetic sheet 10 is bent with the curved region 18 as a boundary, the third region 22 and the fourth region 23 are opposed, the magnetic sheet 10 is wound, and the first region 20 and the second region 21 are formed on the outermost surface. Arrange.

  In this state, when the antenna of the information writing / reading device is opposed to the non-contact type IC card held in the first region 20 or the second region 21, the non-contact type is caused by electromagnetic induction from the information writing / reading device. Information can be written / read to / from the IC card.

 On the other hand, even if the antenna of the information writing / reading device is opposed to the non-contact type IC card of the first area 20 or the second area 21, the third area 22, the fourth area 23, Information is not written / read to / from the non-contact type IC card in the fifth area 24 and the sixth area 25.

 In addition, when the antenna of the information writing / reading device is opposed to one of the non-contact type IC card in the first area 20 and the non-contact type IC card in the second area 21, information writing to the other is mistakenly performed. No read / write is performed.

(Fifth usage)
The magnetic sheet 10 is bent with the curved region 18 as a boundary so that the fourth region 23 and the fifth region 24 are on the outer surface side, and the first region 20 and the second region 21 are opposed to each other.
Next, the magnetic sheet 10 is bent with the curved region 19 as a boundary, the third region 22 and the fourth region 23 are opposed to each other, the magnetic sheet 10 is wound, and the fifth region 24 and the sixth region 25 are formed on the outermost surface. Arrange.

  In this state, when the antenna of the information writing / reading device is opposed to the non-contact type IC card held in the fifth region 24 or the sixth region 25, the non-contact type is caused by electromagnetic induction from the information writing / reading device. Information can be written / read to / from the IC card.

 On the other hand, even if the antenna of the information writing / reading device is opposed to the non-contact type IC card in the fifth area 24 or the sixth area 25, the first area 20, the second area 21, Information is not written / read to / from the non-contact type IC card in the third area 22 and the fourth area 23.

 In addition, when the antenna of the information writing / reading device is opposed to one of the non-contact type IC card in the fifth area 24 and the non-contact type IC card in the sixth area 25, the information is written to the other side by mistake. No read / write is performed.

(Sixth usage)
The magnetic sheet 10 is bent with the curved region 19 as a boundary so that the fifth region 24 and the sixth region 25 are on the outer surface side, and the second region 21 and the third region 22 are opposed to each other.
Next, the magnetic sheet 10 is bent with the curved region 18 as a boundary, the first region 20 and the sixth region 25 are opposed to each other, the magnetic sheet 10 is wound, and the fourth region 23 and the fifth region 24 are formed on the outermost surface. Arrange.

  In this state, when the antenna of the information writing / reading device is opposed to the non-contact type IC card held in the fourth area 23 or the fifth area 24, the non-contact type is caused by electromagnetic induction from the information writing / reading apparatus. Information can be written / read to / from the IC card.

 On the other hand, even if the antenna of the information writing / reading device is opposed to the non-contact type IC card in the fourth area 23 or the fifth area 24, the first area 20, the second area 21, Information is not written / read to / from the non-contact type IC card in the third area 22 and the sixth area 25.

 In addition, when the antenna of the information writing / reading device is opposed to one of the non-contact type IC card in the fourth area 23 and the non-contact type IC card in the fifth area 24, information is written to the other side by mistake. No read / write is performed.

 According to the magnetic sheet 10 of this embodiment, it is composed of a film-like or sheet-like metal substrate 11, a first magnetic layer 12 and a second magnetic layer 13 formed of a magnetic paint, and in the short side direction. Along with the curved regions 18 and 19, the magnetic sheet 10 can be folded on both sides thereof. Therefore, the magnetic sheet 10 is Z-folded or wound around the curved regions 18 and 19. Thus, the non-contact type IC card held in each of the first area 20, the second area 21, the third area 22, the fourth area 23, the fifth area 24, and the sixth area 25 can be selectively used. it can. That is, a non-contact type IC card that is not used is wound inside the magnetic sheet 10 and the non-contact type IC card to be used is arranged on the outermost surface of the magnetic sheet 10 without replacing the non-contact type IC card. Information can be written / read only to a desired non-contact type IC card. Therefore, it is possible to prevent a loss of contactless IC card.

  Note that the magnetic sheet 10 of this embodiment may be provided with print information for identifying each of the one surface 12a of the first magnetic layer 12 and the one surface 13a of the second magnetic layer 13.

  Further, in this embodiment, the magnetic sheet 10 in which the metal base 11, the first magnetic layer 12, and the second magnetic layer 13 are also present in the curved regions 18, 19 is illustrated, but the magnetic sheet of the present invention is limited to this. Not. In the magnetic sheet of the present invention, at least one of the metal substrate and the magnetic layer is present in the curved region, or the curved region may be formed of only a covering material. In this way, the magnetic sheet can be easily bent in the curved region.

  In this embodiment, the four corners of the first region 20, the second region 21, and the third region 22 of the first magnetic layer 12, and the fourth region 23, the fifth region 24, and the sixth of the second magnetic layer 13 are used. Although the magnetic sheet 10 in which the triangular bag-shaped holding portions 17 are provided at positions corresponding to the four corners of the region 25 is illustrated, the magnetic sheet of the present invention is not limited to this. In the magnetic sheet of the present invention, the first region of the first magnetic layer, the four corners of the second region and the third region, and the fourth corner of the second magnetic layer are used as the holding portion of the non-contact type data receiver / transmitter. Each of the area, the fifth area, and the sixth area may be provided with one storage section that stores a part or all of the non-contact type data transmitting / receiving body.

  Furthermore, in this embodiment, although the magnetic sheet 10 which has three area | regions in each of the 1st magnetic layer 12 and the 2nd magnetic layer 13 was illustrated, the magnetic sheet of this invention is not limited to this. The magnetic sheet of the present invention may have four or more regions in each of the first magnetic layer and the second magnetic layer with the curved region as a boundary. Even in the case of a magnetic sheet having four or more regions in each of the first magnetic layer and the second magnetic layer, the method of use, action and effect are the same as in this embodiment.

It is the schematic which shows one Embodiment of the magnetic sheet of this invention, (a) is a top view, (b) is sectional drawing which follows the AA line of (a). It is a schematic sectional drawing which shows the usage method of one Embodiment of the magnetic sheet of this invention. It is a schematic sectional drawing which shows the usage method of one Embodiment of the magnetic sheet of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Magnetic sheet, 11 ... Metal base material, 12 ... First magnetic layer, 13 ... Second magnetic layer, 14 ... Laminated sheet, 15 ... First coating material, 16 ... .. second covering material, 17 ... holding portion, 18, 19 ... curved region, 20 ... first region, 21 ... second region, 22 ... third region, 23 ... -4th area | region, 24 ... 5th area | region, 25 ... 6th area | region.

Claims (1)

A laminated sheet comprising a metal substrate and a first magnetic layer and a second magnetic layer provided on both surfaces of the metal substrate, each of which includes three or more of the first magnetic layer and the second magnetic layer; And a magnetic sheet provided with bent regions that can be bent on both sides of the laminated sheet along the short side direction of the laminated sheet,
Each of the three or more regions of the first magnetic layer and the second magnetic layer is provided with a holding portion for a non-contact type data transmitter / receiver on the surface opposite to the surface in contact with the metal substrate. A magnetic sheet characterized by that.

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