JP2008198294A - Disk and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk formed so that an RFID tag is not peeled from the disk and to provide its manufacturing method. <P>SOLUTION: The disk (1) having a center hole and an information recording surface includes an annular groove (6) provided between the center hole and the information recording surface and the RFID tag (4) embedded in and fixed to the groove (6). The RFID tag (4) is fixed to the groove (6) by irradiating an UV adhesive injected in such a state that the RFID tag (4) is placed in the groove (6) with UV, so that the cured adhesive (7a) does not substantially jump out from the center hole and the information recording surface. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a disc and a manufacturing method thereof, and more particularly to a disc such as a compact disc (CD) or DVD having an RFID tag and a manufacturing method thereof.

  In recent years, a large number of discs such as CDs and DVDs are on the market, and those equipped with RFID tags on the disc have already been used for managing the discs.

  FIG. 6 shows a conventional example of a disk equipped with such an RFID tag. FIG. 1A is a plan view of the disk 1. The disk 1 has a center hole 2 provided for rotating the disk and an information recording surface 3 on which information is recorded. An RFID tag 4 is attached to the surface of the disk between the center hole 2 and the information recording surface 3 so that information can be transmitted and received with the outside (reader / writer) in a non-contact manner.

  Fig. 2 (2) is an enlarged view of the RFID tag 4 shown in Fig. 1 (1). This RFID tag 4 includes an antenna 4_1 and an IC chip 4_2 connected to the antenna 4_1. It is configured.

  FIG. 3 (3) shows a cross-sectional view when the RFID tag 4 is cut along line II in FIG. 2 (2), and the portion A shown in FIG. 2 (2) is shown in FIG. 3 (3). It corresponds to part A.

  A portion A shown in FIG. 3 (3) is enlarged and shown in FIG. 4 (4). The RFID tag 4 is provided with an IC chip 4_2 above the antenna 4_1 and below the antenna 4_1. Is provided with a plastic film 4_3. As shown in FIG. 5 (5), there is a case where no plastic film is provided under the antenna 4_1.

  A partial cross-sectional view when the RFID tag 4 shown in FIG. 6 is mounted on the surface of the disk 1 is shown in FIG. That is, the RFID tag 4 is mounted on the surface of the disk 1, and the adhesive sheet 5 is further bonded to the RFID tag 4 to fix the RFID tag 4 to the disk 1.

In addition, a slit hole is provided in an area excluding the signal recording area in the conductive reflection film provided around the predetermined area of the optical disc, and the reflection film and the RFID tag are sandwiched by the slit hole at the center of the slit hole. There is an optical disc formed with a connection terminal of an IC chip and a manufacturing method thereof (see, for example, Patent Document 1).
Japanese Unexamined Patent Publication No. 2006-92630

  In this way, in the case of a conventional disc, the RFID tag 4 is attached on the surface thereof, so that the RFID tag 4 protrudes from the disc 1 as shown in FIG. In some cases, the RFID tag 4 may be peeled off from the disk 1 due to rotation of the disk or due to frequency of use.

  Accordingly, an object of the present invention is to provide a disc in which an RFID tag is not peeled off from the disc, and a manufacturing method thereof.

  In order to achieve the above object, a disc according to the present invention has a center hole and an information recording surface, an annular groove provided between the center hole and the information recording surface, and embedded in the groove. It features a fixed RFID tag.

  The tag is fixed to the groove by UV irradiation of the UV adhesive injected in a state of being placed in the groove and cured, and the adhesive is bonded from the center hole and the information recording surface. The agent is prevented from substantially jumping out.

  In this way, the RFID tag is embedded in an annular groove provided between the center hole of the disc and the information recording surface so that it does not protrude from the center hole and the information recording surface. The adhesive for fixing the film in the groove is also prevented from substantially protruding from the center hole and the information recording surface.

  Therefore, the problem that the RFID tag is peeled off due to the rotation of the disk itself and the frequency of use is solved.

  The above-described disc can be manufactured by a first step of providing an annular groove between the central hole and the information recording surface, and a second step of embedding and fixing an RFID tag in the groove.

  In this case, the second step is a step of placing the RFID tag in the groove, injecting a UV adhesive, and fixing the RFID tag in the groove by curing the UV adhesive by UV irradiation. So that the adhesive does not substantially protrude from the surface.

  On the other hand, the present invention provides a case for storing a disc having an RFID tag provided in an annular shape between the center hole and the information recording surface. When the disc is accommodated, this case and the RFID tag A boost antenna composed of a first portion provided at a position to be coupled and a second portion extending from the first portion and performing transmission / reception with an external reader / writer, on one surface or on a plurality of adjacent surfaces Pasted over.

  The disk in this case may be either a conventional disk on which an RFID tag is mounted or a disk according to the present invention.

  Further, the boost antenna may be attached in a state where it is attached to the base sheet.

  In this way, when the conventional disk shown in FIGS. 6 and 7 or the disk of the present invention having the above structure is stored in the case, the RFID and the boost antenna are electromagnetically coupled. Thus, it is possible to transmit and receive information to and from an external reader / writer, and it is possible to use it for disk document management and the like.

  As described above, according to the disk according to the present invention, it is possible to avoid a situation in which the RFID tag is peeled off from the disk during use of the CD or DVD, or during transportation work, etc. As a result, document management over a long period of time on the disc becomes possible.

[1] Example of disk: Fig. 1
FIG. 1 shows an embodiment of a disc according to the present invention, in which FIG. (1) shows a partial cross-sectional view in the case of a CD, and FIG. ing.

  First, the disk (CD) 1 shown in FIG. 1 (1) is provided with a groove 6. In this groove 6, an antenna 4_1, an IC chip 4_2 and a plastic film 4_3 (this is included in the RFID tag 4). However, there is a case where there is no such a case.) Is mounted in the same manner as the three-stage configuration shown in FIG. By injecting and curing the UV adhesive in this state, the cured UV adhesive 7a does not substantially jump out of the surface of the disk 1.

  In the example of the DVD shown in FIG. 2 (2), the disc 1 is composed of the disc portions 1_1 and 1_2, and information is recorded on the right or left side of the lower portion of the groove 6 on the bonding surface 3a of the disc portions 1_1 and 1_2. A surface is provided, and a central hole (both not shown) is provided on the opposite side.

[2] Disk manufacturing method: Fig. 2
A manufacturing process of the disk according to the present invention shown in FIG. 1 is shown in FIG. 2, and steps (1) to (4) shown in FIGS. However, in this embodiment, a CD disc is used, but the DVD is exactly the same in the manufacturing method.

 (1) First, a groove 6 is provided between the center hole 2 of the disk 1 and the information recording surface 3 shown in FIG. The groove 6 preferably has a taper 6_1 as shown.

 (2) Next, the RFID tag 4 including the antenna 4_1, the IC chip 4_2, and the plastic film 4_3 is embedded in the groove 6. The RFID tag 4 may simply be placed in the groove 6 or may be adhered to the bottom of the groove 6 via a plastic film 4_3.

 (3) Next, the UV adhesive 7 is poured from the top of the RFID tag 4 toward the groove 6. The amount of pouring is such that it does not protrude from the surface of the disk 1 as shown.

 (4) Thereafter, UV irradiation is performed on the UV adhesive 7 poured in the step (3) from the UV irradiator 8. As a result, the UV adhesive 7 becomes a cured UV adhesive 7a. As a result, the UV adhesive 7 has a smaller capacity in the state shown in the step (4) than in the state shown in the step (3), and thus the UV adhesive 7 does not protrude from the surface of the disk 1. More suppressed.

  In this way, the RFID tag 4 is embedded and fixed in the groove 6 provided in the disk 1, so that it is difficult to peel off from the disk 1.

[3] Case Example: Figs. 3 and 4
FIG. 3 shows an embodiment of a case for housing the above-described disk according to the present invention. However, the case according to this embodiment is applicable not only to the above-described disk according to the present invention but also to the disk according to the conventional example shown in FIGS.

  FIG. 3 (a) shows the case where the boost antenna 11 is attached to the front (front) 10_1 of the case 10 made of plastic or the like, and FIG. 3 (b) extends over the front 10_1 and the side 10_2 of the case 10. The case where the boost antenna 11 is pasted is shown. In these cases, the boost antenna 11 can be pasted via a boost antenna sheet (hereinafter sometimes referred to as a base sheet) as will be described later.

  First, in the case of affixing the front face of the boost antenna shown in FIG. 4A, when the center hole of the disc 1 is housed in the case 10 as shown in FIG. 4, the RFID tag 4 provided on the disc 1 and the electromagnetic The first part (partial circle) 11_1 of the boost antenna 11 is provided at the coupling position, and the second part 11_2 of the boost antenna 11 extending from the first part 11_1 and spreading in a triangular shape as shown in the figure is provided. (See the perspective view of FIGS. 1A and 1 and the front view of FIGS. 1A and 2).

  As a result, the external reader / writer can communicate with the RFID tag 4 of the disk 1 attached to the case 10 via the boost antenna 11.

  In addition, in the case of pasting the front and side surfaces of the boost antenna in (b) of the same figure, as shown in the perspective view of (b) and (1) of the same figure, the first portion 11_1 of the boost antenna 11 is As in the case, the second portion 11_2 is pasted not only on the front surface 10_1 but also on the side surface 10_2.

  As a result, as shown in the front views of (b) and (2) in the same figure, the second part 11_2 spreads widely on the front surface 10_1 and is attached to the side surface 10_2, so communication with an external reader / writer is more reliable. It becomes.

  FIG. 4 shows a state when the disc 1 is stored in the case 10, and FIG. 4 (1) particularly shows the line II-II shown in FIGS. 3 (a) (2) and (b) (2). FIG. 4 (2) shows a cross-sectional view taken along the line 1 and shows an enlarged portion B of the cross-sectional view.

  That is, the case 10 is provided with a disk holding portion 10_3, and the center hole 2 of the disk 1 on which the RFID tag 4 is mounted is fitted. The boost antenna 11 is affixed to the bottom surface of the case 10 (corresponding to the front surface 10_1 in FIG. 3) while being affixed to the base sheet 12.

[4] Example of boost antenna: Fig. 5
FIG. 5 shows various shape examples of the boost antenna 11 shown in FIG.

  In the case of FIG. 5 (1), the boost antenna 11 is affixed to the base sheet 12 in a triangular shape in the same manner as shown in FIG. 3 (a) (2).

  FIG. 5 (2) shows that the opening portion 11_1a of the first portion 11_1 of the boost antenna 11 is directed to the lower left corner, and the second portion 11_2 is just a quarter of the base sheet 12 with respect to the first portion 11_1. The structure is extended over the circumference of the area.

  In the case of (3) in the figure, the first portion 11_1 of the boost antenna is shifted from the center of the base sheet 12, and the second portion 11_2 is pasted over the width of the base sheet 12 by that amount. It has a structure like this.

  In addition to this, it goes without saying that various shapes according to the application are possible.

  It should be noted that the present invention is not limited to the above-described embodiments, and it is apparent that various modifications can be made by those skilled in the art based on the description of the scope of claims.

It is the fragmentary sectional view which showed the Example of the disk based on this invention. It is a fragmentary sectional view for demonstrating the manufacturing method of the disk based on this invention. It is the perspective view and front view which showed the Example of the case which concerns on this invention. FIG. 4 is a cross-sectional view of the case according to the present invention shown in FIG. 3 taken along line II-II and a partially enlarged cross-sectional view thereof. It is the front view which showed the various Example of the boost antenna used by this invention. It is the figure which showed the disk which mounts the RFID tag known conventionally. FIG. 7 is a partial cross-sectional view showing a relationship between a disk and an RFID tag in the conventional example shown in FIG.

Explanation of symbols

1 disc
2 Center hole
3, 3a Information recording surface
4 RFID tag
4_1 antenna
4_2 IC chip
4_3, 13 Plastic film
5 Adhesive sheet
6 groove
6_1 taper
7 UV adhesive
7a UV adhesive after curing
8 UV irradiation machine
10 cases
10_1 front of case
Side of 10_2 case
10_3 Disk holder
11 Boost antenna
11_1 1st part of boost antenna
11_2 2nd part of boost antenna
12 Base sheet In the figure, the same reference numerals indicate the same or corresponding parts.

Claims (7)

A disc having a central hole and an information recording surface,
An annular groove provided between the central hole and the information recording surface;
RFID tag embedded and fixed in the groove,
A disc characterized by comprising: In claim 1,
The RFID tag is fixed to the groove by UV irradiation of the UV adhesive injected in a state of being placed in the groove, and is fixed to the groove from the center hole and the information recording surface. A disc characterized by preventing the agent from substantially jumping out. A method of manufacturing a disc having a center hole and an information recording surface,
A first step of providing an annular groove between the central hole and the information recording surface;
A second step of embedding and fixing an RFID tag in the groove;
A method for manufacturing a disc, comprising: In claim 3,
The second step includes a step of placing the RFID tag in the groove, injecting a UV adhesive, and fixing the RFID tag in the groove by curing the UV adhesive by UV irradiation, A method for manufacturing a disk, characterized in that the adhesive does not substantially protrude from the surface. A case for storing a disc having an RFID tag provided in an annular shape between a center hole and an information recording surface,
When the disc is stored, the first portion is provided at a position where it is electromagnetically coupled to the RFID tag, and the second portion extends from the first portion and transmits / receives data to / from an external reader / titer. A case wherein the boost antenna is pasted over one surface or a plurality of adjacent surfaces. In claim 5,
A case wherein the disk is the disk according to claim 1 or 2. In claim 5,
A case wherein the boost antenna is attached in a state of being attached to a base sheet.

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