JP2011108343A - Optical disk housing case, optical disk with case, and optical disk management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk management system in which the information of an electronic tag 7 arranged at an optical disk 2 can be read by an antenna for a leader through a booster antenna 8 while the arrangement of the booster antenna 8 to the prescribed case constitution member 5 is simple and sure, and a possibility of damage to the booster antenna 8 is reduced. <P>SOLUTION: Booster antennas 8 are arranged at the prescribed continuous plane of the prescribed case constitution members 5 of an optical disk housing case 3. Also, a second loop antenna 23 wireless-communicating with the antenna for the leader out of the booster antennas 8 includes a first pattern 23a extended almost along the total length of the prescribed peripheral wall in the prescribed case constitution member 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an optical disk storage case in which an optical disk is stored. The present invention also relates to an optical disc with a case provided with an optical disc stored in the disc storage space of such an optical disc storage case. Furthermore, the present invention also relates to an optical disc management system for managing such an optical disc with a case.

  2. Description of the Related Art Conventionally, there is known an article management system in which an electronic tag storing information on an article to be managed is attached to the article, and a handy reader communicates with the electronic tag without contact. Conventionally, a reader / writer antenna of a reader / writer device is provided on an article mounting shelf or the like, and an article with an electronic tag as described above is placed on the article mounting shelf, whereby the reader / writer antenna is placed. An article management system is also known in which the electronic tag communicates with the electronic tag. Note that such an electronic tag is also called an IC tag or a wireless tag, and includes an IC chip in which a memory in which information such as product information is recorded is incorporated, and a communication circuit including a small antenna. Yes. In addition, the reader / writer antenna that communicates with the electronic tag as described above is used to place an article for the purpose of preventing the article placement shelf surface or the base plate surface of the article placement shelf and the article from dropping off. It is often arranged along the back plate surface arranged on the back side of the shelf, and is usually configured as a loop antenna.

  On the other hand, there are a wide variety of articles to be managed, but the attachment of an electronic tag to a metallic object and its vicinity, and the posture of a plurality of electronic tags (specifically, they are stacked on each other or stacked on each other) Etc.), the communication performance between the reader / writer antenna and the electronic tag deteriorates. For this reason, there are restrictions on the article to which the electronic tag is attached, and there are also restrictions on the method of arranging the article.

As described above, the causes of the deterioration in the communication performance between the reader / writer antenna and the electronic tag (in other words, the reading performance of the electronic tag by the reader / writer antenna) are the following items (1) to (3). It is as described in.
(1) Affixing to or near a metallic object: In this case, the reading performance is degraded by the demagnetizing field of eddy current generated on the surface of the metallic object.
(2) Affixing to a loop-shaped metallic object or its vicinity: In this case, since the loop-shaped metallic object becomes an antenna, a demagnetizing field is generated by this antenna, so that the reading performance is deteriorated. .
(3) Attitude between electronic tags: When a plurality of electronic tags approach each other, the resonance frequency of each electronic tag is shifted due to mutual interference between the plurality of electronic tags, so that the reading performance is deteriorated. .

In consideration of the factors of deterioration in reading performance as described in the above items (1) to (3), in the article management system as described above, the management (in other words, with the electronic tag attached to the article) Representative examples of articles that are most difficult to communicate include optical disc recording media (hereinafter referred to as “optical discs”) such as CDs (Compact Discs) and DVDs (Digital Versatile Discs). The reason why it is difficult to manage the optical disk with the electronic tag in this way is as described in the following items (4) to (7).
(4) In the optical disc, the recording layer on the surface is constituted by a metal layer, and the metal layer is constituted by a donut-shaped closed loop shape (in other words, an electrically donut-shaped closed loop shape). For this reason, the optical disk has the factors described in the above items (1) and (2).
(5) Since the thickness of the optical disk is as thin as about 1.2 mm, attaching an electronic tag to the peripheral side surface of the optical disk itself may cause problems such as size problems and malfunction of the optical disk during reproduction. Since there is a problem, it is necessary to attach the electronic tag to a portion other than the recording layer portion of the optical disc (in other words, the label surface, the inner diameter portion, etc., hereinafter referred to as “non-memory portion”). For this reason, the optical disk has the factors described in the above items (1) and (2).
(6) The optical disk is normally stored and stored in a storage case having a rated size of 10 mm or less (hereinafter referred to as “disk storage case”). For this purpose, a large number of such optical discs with disc storage cases (hereinafter referred to as “optical discs with cases”) are shelf plates of fixtures such as optical disc arrangement boxes (hereinafter referred to as “disc arrangement fixtures”). When arranging on the mounting plate, it is necessary to arrange a large number of optical disks with a case in a bundle in a state of being stacked in the front direction of the mounting plate, considering the ease of taking out the optical disks with individual cases. . In this case, the large number of electronic tags attached to the large number of optical disks respectively have substantially the same distance (specifically, 10 mm or less) as the length in the thickness direction of the storage case, and are along a common virtual axis. Are stacked on each other. For this reason, the optical disc has the factors described in the above item (3).
(7) The electronic tag can be attached to the optical disc on the label surface and the inner diameter portion, which are non-storage portions of the optical disc. However, from the viewpoint of deformation of the optical disk when the optical disk is stored for a long time, it is not preferable to attach an electronic tag to the label surface, and it is preferable to attach an electronic tag to the inner diameter portion. However, when the disc with a case is set up on the mounting plate in a state substantially perpendicular to the mounting surface, the surface of the electronic tag of the disc with the case is in a state substantially orthogonal to the mounting surface. Become. For this reason, since the electronic tag is disposed at a position (in other words, a high position) at least 40 mm away from the placement surface, the reader / writer antenna and the electronic tag disposed on the placement surface. The mutual communication distance between them becomes too large. Therefore, the reading performance of the electronic tag by the reader / writer antenna is lowered.

  As methods for managing such optical discs such as CDs and DVDs (in other words, optical discs with cases), methods disclosed in Patent Documents 1 to 5 have been proposed. In the optical disc management methods disclosed in these Patent Documents 1 to 5, an electronic tag is attached to the inner diameter portion of the non-storage portion of the optical disc. A booster antenna is attached to the disk storage case. Such a disc storage case can communicate with a reader / writer antenna incorporated in a handy reader or a mounting plate of an optical disc organizing fixture in a non-contact manner. In addition, although the object of the invention in Patent Documents 1 and 2 is an information recording medium including a cassette tape, an optical disk is cited as a typical example of this information recording medium. In addition, the objects of the inventions in Patent Documents 3 to 5 are limited to optical disks.

Next, Patent Documents 1 to 5 will be described in detail by dividing into the following items (8) to (10).
(8) In Patent Document 1, a plurality of reader antennas or fixtures disposed on each of a plurality of partition plates of a fixture (each of the partition plates extends in a substantially vertical direction). The reader antenna disposed on each of the shelf boards and the electronic tag attached to the non-memory portion on the inner diameter side of the optical disk are configured to communicate with each other in a non-contact manner via the booster antenna. A contactless communication system is disclosed. In this case, the booster antenna is provided in a disk storage case. The reader antenna and the booster antenna are configured to be parallel to each other.
(9) The invention of Patent Document 2 relates to a disk storage case provided with a booster antenna used in the non-contact communication system disclosed in Patent Document 1.
(10) In Patent Documents 3 to 5, a first antenna portion attached to a main surface portion (in other words, a substantially horizontal flat portion other than a peripheral side surface portion) of a disc storage case arranged in a fixture, There is disclosed a disk storage case provided with a booster antenna having a second antenna portion attached to a side surface portion (specifically, a side surface portion on the hinge side) of the disk storage case. In this case, the handy reader antenna is arranged so as to be substantially parallel to the second antenna portion, and then scanned along the peripheral side surface portion on the hinge side, thereby communicating with the second antenna portion. . For this reason, according to the inventions described in Patent Documents 3 to 5, it is possible to provide an article management system in which the electronic tag of the optical disk and the reader antenna can communicate with each other via the booster antenna.

JP-A-2005-339170 JP 2005-339663 A JP 2008-207875 A JP 2008-210484 A JP 2008-251146 A

However, the non-contact communication system disclosed in Patent Document 1 has problems as described in the following items (A) to (C). The reason why these problems occur is as described in the items (a) to (c) sequentially described after the descriptions of the items (A) to (C).
(A) When the reader antenna is arranged on the partition plate or shelf so as to correspond to each electronic tag, the reading performance of the electronic tag by the reader antenna is lowered.
(A) When the reader antenna is arranged on the partition plate or shelf so as to correspond to each electronic tag, a plurality of reader antennas are arranged close to each other, or a plurality of electronic tags are arranged close to each other. Or placed. For this purpose, one reader is generated by an electromagnetic field generated between a plurality of reader antennas or between a plurality of electronic tags (in other words, between a plurality of booster antennas). A plurality of electronic tags may be read by the antenna for use, or an electronic tag that cannot be read by the reader antenna may be generated. For example, when the reader antenna is provided on the partition plate, the plurality of reader antennas are arranged in the direction of the common virtual axis, and therefore electromagnetic induction occurs between the plurality of reader antennas. Therefore, the reading performance of the reader antenna is degraded, and reading of the electronic tag by the reader antenna is not performed correctly. Further, when the reader antenna is disposed on the shelf board, the distance between the plurality of reader antennas is small, and the distance between the plurality of booster antennas is also small. Interference occurs between the reader antennas and between the plurality of booster antennas. Therefore, the reading performance of the electronic tag by the reader antenna is deteriorated, or a plurality of electronic tags are recognized and read by one reader antenna.
(B) When the reader antenna is arranged so as to correspond to each electronic tag, the management processing time becomes long, and the cost of the non-contact communication system becomes high.
(B) It is necessary to switch the antenna for each reader when reading each individual electronic tag, and the response speed of the electronic tag is faster than the switching speed. As the processing time becomes longer, the cost of the non-contact communication system increases.
(C) Even when the reader antenna is provided on the shelf board of the fixture, in order to accurately place the optical disk at the position corresponding to the reader antenna, it is necessary to provide a plurality of partition plates. The amount of the optical disk that can be accommodated in one shelf plate is reduced substantially corresponding to the total thickness of the plurality of partition plates.
(C) When the reader antenna is disposed on the shelf board of the fixture, if the partition plate is not disposed, a positional deviation occurs between the second antenna portion of the booster antenna and the reader antenna. Therefore, since the electronic tag cannot be satisfactorily recognized by the reader antenna, it is necessary to provide the partition plate.

Further, the non-contact communication systems disclosed in Patent Documents 2 to 5 have problems as described in the following items (D) and (E). The reason why these problems occur is as described in the items (d) and (e) sequentially described after the descriptions of the items (D) and (E).
(D) It is difficult to attach the booster antenna to the disc storage case, and the reading performance of the electronic tag by the reader antenna is greatly deteriorated due to the shift of the application position of the booster antenna.
(D) Since the booster antenna is affixed across the main surface portion orthogonal to each other and the peripheral side surface portion on the hinge side or the peripheral side surface portion other than the hinge side, the affixing is a difficult task. In particular, when affixing to the main surface portion and the peripheral side surface portion on the hinge side as in Patent Documents 3 to 5, the cover portion and the base portion are often seen in a 10 mm thick disk storage case. At the same time, it is necessary to remove in advance the disk mounting portion (in other words, the disk tray) constituting the disk storage case. Moreover, since the location of the pasting becomes the uneven surface of the base portion, the pasting operation is particularly difficult. Further, as often seen in thin disk storage cases, when the disk storage case is composed of a base part and a cover part that opens and closes to the base part at the hinge part, by opening and closing the cover part, The distance between the first antenna portion and the second antenna portion constituting each booster antenna changes. For this reason, the booster antenna is easily damaged when the cover part is opened and closed. Further, because the position where the booster antenna is attached is displaced, when the second antenna portion is attached in a substantially L-shaped cross section so as to straddle the main surface portion and the peripheral side surface portion on the hinge side, the reader In the main surface portion (or the peripheral side surface portion on the hinge side) from the antenna for the antenna, a part of the magnetic field that has entered the second antenna portion from the front side is the peripheral side surface portion on the hinge side (or the main surface portion). In this case, since the second antenna portion comes out to the front side again, the reading performance of the electronic tag by the reader antenna is lowered.
(E) A booster antenna cannot be produced by a simple method.
(E) Since the booster antenna has a shape having an intersecting portion formed of a plurality of winding coils, it cannot be produced by a printing method or die cutting of a conductive foil.

  The present invention has been invented in order to solve the above-mentioned problems in the optical disc management system disclosed in Patent Documents 1-5.

  According to a first aspect of the present invention, in an optical disc storage case in which an optical disc is stored, a plurality of case constituent members constituting the optical disc storage case and a predetermined one of the plurality of case constituent members And a booster antenna disposed on a predetermined continuous surface (in other words, a surface having no corners, preferably a substantially flat surface) of the case constituent member, and the booster antenna includes the optical disc Between the first loop antenna portion which can be substantially opposed to the electronic tag disposed in the substantially central portion of the first case, and between the first peripheral side portion of the predetermined case constituent member and the first loop antenna portion. A second loop antenna portion disposed; and a connection pattern portion connecting the first loop antenna portion and the second loop antenna portion, wherein the second loop antenna is provided. A first pattern portion extending along substantially the entire length of the first peripheral side portion (preferably, the peripheral side portion opposite to the hinge-side peripheral side portion); A second pattern portion extending substantially along the second peripheral side portion substantially continuous with one end of the first peripheral side portion, and a second pattern portion extending substantially along the other end of the first peripheral side portion. A third pattern portion extending substantially along the circumferential side portion of the third pattern portion, and a fourth pattern portion substantially connecting the second pattern portion and the third pattern portion. The present invention relates to an optical disk storage case.

  In the first aspect of the first aspect of the present invention, it is preferable that the fourth pattern portion is connected to the connection pattern portion. In the second aspect of the first aspect of the present invention, the booster antenna is preferably a one-turn loop antenna. In the third aspect of the first aspect of the present invention, the predetermined case constituent member is preferably a cover part and / or a base part (more preferably, a cover part) of the optical disk storage case. . Moreover, in the 4th aspect of the said 1st viewpoint of this invention, it is preferable that the said predetermined continuous surface of the said predetermined case structural member is an inner surface of the said cover part and / or the said base part. Furthermore, in the fifth aspect of the first aspect of the present invention, the outer periphery of the second antenna unit with respect to the size of the first antenna unit along the outer periphery of the first antenna unit. It is preferable that the ratio of the size of the second antenna portion along the line is in the range of 2.6 to 4.4 (more preferably, 2.9 to 4.1).

  According to a second aspect of the present invention, there is provided an optical disk storage case according to the first aspect and an optical disk stored in a disk storage space of the optical disk storage case, wherein the optical disk has a central opening of the optical disk. And an optical disc with a case, characterized in that it has the above-mentioned electronic tag disposed at a substantially central portion of the optical disc so as to surround the optical disc.

  Further, according to a third aspect of the present invention, in the optical disc management system for managing the optical disc with a case according to the second aspect, a reader antenna capable of wirelessly communicating with the electronic tag via the booster antenna is provided. The present invention relates to an optical disc management system comprising a reader antenna device having a reader antenna device.

  And in the 1st mode of the 3rd above-mentioned viewpoint of the present invention, the above-mentioned reader antenna consists of the 1st and 2nd loop antenna parts provided in the antenna formation object member, respectively. Each of the second loop antenna portions includes a substantially loop-shaped antenna pattern, and the substantially loop-shaped antenna pattern of the first loop antenna portion and the substantially loop-shaped antenna of the second loop antenna portion. Each of the patterns extends substantially in the x-axis direction when the predetermined direction of the antenna forming target member is the x-axis direction and the direction substantially orthogonal to the x-axis direction is the y-axis direction. a first pattern portion provided on the first side in the y-axis direction and a second pattern portion provided on the first side in the x-axis direction extending substantially in the y-axis direction. A pattern portion, a third pattern portion provided on the second side opposite to the first side in the y-axis direction extending substantially in the x-axis direction, and extending substantially in the y-axis direction. A fourth pattern portion provided on a second side opposite to the first side in the x-axis direction, and the first pattern portion of the first loop antenna portion; Each of the third pattern portions of the second loop antenna portion and the plurality of baseline portions that are intermittently disposed with each other, and at least provided between the plurality of baseline portions. Each of the bent portions is configured to have a substantially convex shape including a first rising portion and a second rising portion, respectively, and the first loop antenna portion includes the first bent portion. Rising part or the second rising The first loop antenna portion is arranged between the first rising portion corresponding to the second rising portion of the second loop antenna portion and the second rising portion corresponding to the first rising portion. It is preferable that the second loop antenna portion is substantially displaced in the x-axis direction.

  In the first aspect of the third aspect, each of the bent portions extends in the x-axis direction in order to connect the respective leading end portions of the first and second rising portions. The connecting portion of the first loop antenna portion and the baseline portion of the second loop antenna portion constitute a longitudinal overlapping portion and / or a longitudinal proximity portion. The base line part of the first loop antenna part and the connecting part of the second loop antenna part preferably constitute a longitudinal overlapping part and / or a longitudinal proximity part. In the first aspect of the third aspect, the second and fourth pattern portions and the first and second rising portions are inclined by substantially an angle θ with respect to the y-axis direction. It is also configured to extend, and the inclination angle θ is preferably in a range larger than 0 ° and smaller than 30 ° (more preferably in a range of 10 ° to 20 °). Furthermore, in the first aspect of the third aspect, a large number of the optical disk storage cases are bundled in a state of being stacked so as to be substantially directed in the x direction, and are arranged close to the antenna forming member. Is preferred.

  According to the present invention, information recorded on a large number of electronic tags respectively provided on a large number of optical disks can be read with a common reader antenna. For this reason, compared with the case where a large number of reader antennas are used corresponding to the large number of electronic tags, there is no possibility of electromagnetic induction between the large number of reader antennas. Reliability in reading electronic tags is improved. In addition, since information of a large number of electronic tags can be read with a common reader antenna, the optical disc management processing time is shortened, and the cost of the optical disc management system is reduced.

  In addition, according to the present invention, it is not particularly necessary to provide a large number of partition plates provided with reader antennas in the disk storage space in correspondence with the large number of optical disks. The amount of storage increases. Furthermore, since the booster antenna is disposed on a predetermined continuous surface (preferably a flat surface) of a predetermined case component, the booster antenna can be easily and reliably disposed on the disk storage case. The booster antenna is less likely to be damaged.

  According to the invention of claim 3, since the booster antenna is a one-turn loop antenna, there is no crossing portion of the antenna pattern in the loop antenna as compared with the multiple-turn loop antenna. In addition, the booster antenna can be easily manufactured by printing, die cutting of the conductive box, or the like. According to the invention of claim 6, since the second antenna part is sufficiently larger than the first antenna part, electromagnetic coupling between the booster antenna and the reader antenna can be performed satisfactorily. Is possible. Furthermore, according to the ninth aspect of the invention, information recorded on electronic tags respectively disposed on a large number of optical disks can be read stably with a reader antenna via a booster antenna. Can do.

It is a top view of the optical disk with a case by one Example of this invention. Example 1 It is sectional drawing in the II-II line of FIG. Example 1 It is a perspective view of the optical disk with a case of FIG. Example 1 FIG. 2 is a perspective view of the optical disc with case of FIG. 1 showing a process of opening a cover portion of the disc storage case and taking out the optical disc from the disc storage case. Example 1 It is a top view of the antenna formation board for readers by the 1st example of the present invention. Example 1 It is a top view of the antenna formation board for readers by the 2nd example of the present invention. (Example 2) It is a perspective view which shows one usage pattern of the antenna formation board for readers shown in FIG. Example 1 It is a perspective view which shows one usage pattern of the antenna formation board for readers shown in FIG. (Example 2) It is a perspective view which shows the usage pattern different from FIG. 7 of the antenna formation board for readers shown in FIG. (Example 3)

  Next, examples in which the present invention is applied to an optical disc management system are described in “1, configuration of optical disc with case”, “2, configuration of reader antenna forming plate”, and “3, usage pattern of reader antenna forming plate”. The description will be made with reference to the drawings.

1. Configuration of optical disk with case FIGS. 1 to 4 show an optical disk 2 such as a CD, a DVD (-ROM, -R, -RW, etc.), a BD, and a disk storage case 3 in which the optical disk 2 is stored. An optical disc 1 with a case provided with is shown. The disc storage case 3 may be made of plastic having a thickness of 10 mm and a size of 141 mm × 125 mm widely distributed in the market. As shown in FIGS. 2 and 4, the disc storage case 3 is attached to the base portion 4 constituting the lower outer case, the cover portion 5 constituting the upper outer case, and the base portion 4. And a disc mounting portion (in other words, a disc tray) 6 interposed between the base portion 4 and the cover portion 5. The optical disk 2, the base part 4, the cover part 5, and the disk mounting part 6 are configured such that the electronic tag 7 is provided on the optical disk 2 and the booster antenna 8 is provided on the cover part 5. Except for this, the case may be the same as that of a generally known optical disc with a case, and detailed description thereof will be omitted.

  The electronic tag 7 is placed on the front side plane (in other words, the label forming side plane) 12 opposite to the back side plane (in other words, the recording layer forming side plane) 11 on which the recording layer of the optical disc 2 is formed. It is arranged. The electronic tag 7 includes a small antenna (not shown) having a thin plate shape and a substantially donut shape, and an IC chip (not shown) electrically connected to the small antenna. However, it may be resin-molded so as to have a thin plate shape and a substantially donut shape. The electronic tag 7 is disposed so as to surround the central hole 13 of the optical disc 2. Further, when the optical disc 2 is viewed in plan, the inner periphery of the electronic tag 7 is substantially the same as the outer periphery of the central aperture 13 or the outer periphery so that the electronic tag 7 does not protrude into the central aperture 13. Is a little bigger than. Further, when the optical disc 2 is viewed in plan, the outer periphery of the electronic tag 7 is substantially the same as the inner periphery of the recording layer on the recording layer forming side 11 so that the electronic tag 7 does not protrude from the recording layer. It is slightly smaller than the inner periphery. In addition, the booster antenna 8 is formed in the substantially flat inner side plane 14 of the cover part 5, as shown in FIG. Therefore, in FIG. 1, FIG. 3, FIG. 4 and FIG. 7 to FIG. 9, the booster antenna 8 should originally be illustrated by a broken line, but in order to clarify the illustrated state, it is illustrated by a solid line. Has been.

  The base part 4, the cover part 5, and the disk mounting part 6 are substantially the same shape and substantially rectangular as viewed in plan. As shown in FIGS. 2 to 4, the cover 5 includes a pair of left and right support shafts 16 in the vicinity of the rear ends of the inner side surfaces of the peripheral wall portions 15 a and 15 b on the left and right sides. Further, the base portion 4 includes a pair of left and right openings (not shown) in the vicinity of the rear end portions of the peripheral wall portion 17 on both the left and right sides. Since the pair of left and right support shafts 16 are fitted in the pair of left and right openings, the cover unit 5 uses the pair of left and right support shafts 16 as fulcrums with respect to the base unit 4 and the disk mounting unit 6. It can be opened and closed. Further, the vicinity of the peripheral wall portion 21 on the rear side of the disk storage case 3 constitutes a peripheral side portion on the hinge side. In the text, for convenience of explanation, the peripheral side portion on the hinge side is referred to as a peripheral side portion or peripheral wall portion on the rear side, and the peripheral side portion on the opposite side to the hinge side is referred to as a peripheral side portion or peripheral wall portion on the front side. ing.

  The disc mounting portion 6 includes a pair of front and rear substantially arc-shaped step portions 25 a and 25 b corresponding to the outer peripheral shape of the optical disc 2. These step portions 25a and 25b are configured to be low on the surface on the center side of the disk mounting portion 6 (in other words, the disk mounting surface) and high on the outer peripheral surface. In addition, a disk holding part 26 for holding the optical disk 2 by being fitted in the center hole 13 of the optical disk 2 is projected from the center of the disk mounting part 6.

  As shown in FIG. 1, the booster antenna 8 includes a first loop antenna unit 22, a second loop antenna unit 23, and a connection pattern unit that connects the first and second antenna units 22 and 23. 24, it is comprised integrally. As a material for the booster antenna 8, for example, a copper foil having a width of 5 mm can be used. Each of the first antenna portion 22 and the second antenna portion 23 is one turn in the illustrated embodiment, but is not necessarily required to be one turn. Moreover, the connection pattern part 24 may be a pair of left and right adjacent to each other at a narrow interval so as to constitute a constricted part of the booster antenna 8. Therefore, in the illustrated embodiment, the booster antenna 8 has a one-stroke writing shape that does not overlap in plan view. However, the booster antenna 8 is not necessarily required to have such a shape. As shown in FIG. 1, the first antenna portion 22 extends along the donut-shaped electronic tag 7 (particularly, the outer periphery thereof) when seen in a plan view. In the illustrated embodiment, the first antenna portion 22 is substantially rectangular (specifically, except for being cut out at the connection location with the connection pattern portion 24 in plan view). , Substantially square). In addition, the second antenna portion 23 has a substantially rectangular shape that is substantially rectangular, except that the second antenna portion 23 is cut out at a connection portion with the connection pattern portion 24 in plan view. The pattern portion 23a on the front side of the second antenna portion 23 extends substantially along the peripheral side portion on the front side of the cover portion 5 (in other words, the disc storage case 3). In addition, the pattern portions 23 b and 23 c on the left and right sides of the second antenna portion 23 extend substantially along the respective peripheral side portions on the left and right sides of the cover portion 5. Accordingly, the front pattern portion 23a and the left and right pattern portions 23b and 23c constitute a substantially U-shaped pattern portion. Further, the pattern portion 23d on the rear side of the second antenna portion 23 has a position substantially in the middle between the center of the center hole 13 of the optical disc 2 and the front pattern portion 23a when the optical disc 1 with a case is viewed in plan. The front pattern portion 23a extends substantially in parallel.

  As described above, the pattern portion 23 a on the front side of the second antenna portion 23 of the booster antenna 8 extends substantially along the peripheral side portion on the front side of the cover portion 5. Accordingly, as shown in FIGS. 1 to 4, the second antenna portion 23 is substantially adjacent to the circumferential side portion opposite to the hinge side of the disk storage case 3 in a plan view. Is formed on the inner flat surface 14 of the inner surface. Since the second antenna portion 23 is substantially adjacent to the peripheral side opposite to the hinge side in this way, the reader antenna 33 as described later can always be electromagnetically coupled to the second antenna portion 23 satisfactorily. it can. That is, as shown in FIG. 9, when the optical disc 1 with a case is placed on the article placement plate 62 of the article placement shelf, the peripheral side portion 21 on the hinge side of the disc storage case 3 is usually in front. Placed on. Therefore, the second antenna portion 23 of the booster antenna 8 can be electromagnetically coupled well with the reader antenna 33 provided on the back plate 31 as shown in FIG. 9, and as shown in FIGS. In addition, the reader antenna 33 provided on the article placing plate (in other words, the shelf plate) 62 can be electromagnetically coupled well. On the other hand, when the second antenna portion 23 is provided on the side of the peripheral side portion on the hinge side so as to be adjacent to the peripheral side portion on the hinge side, the second antenna portion 23 is mounted on the article. The reader antenna 33 provided on the mounting plate 62 can be electromagnetically coupled well, but the reader antenna 33 provided on the back plate 31 cannot be electromagnetically coupled well.

  Further, when the second antenna part 23 is provided on the left side or right side of the peripheral side so as to be substantially adjacent to the left side or right side of the peripheral side forming approximately 90 ° with respect to the hinge side, The following disadvantages arise. That is, the disc storage case 3 is placed on the article placement plate 62 with the disc storage case 3 turned upside down (in other words, the left peripheral portion and the right peripheral portion are reversed). When placed, the second antenna 23 exists at a position away from the article placement plate 62, so that the reader antenna 33 provided on the article placement plate 62 as shown in FIGS. 7 and 8. Cannot be electromagnetically coupled to the second antenna portion 23 satisfactorily. However, when the vertical position of the disk storage case 3 placed on the article placement plate 62 can be accurately managed, the second antenna portion 23 is placed on the left or right peripheral side. It can also be provided. In this case, as shown in FIGS. 7 and 8, the reader antenna provided on the shelf plate 62 can be electromagnetically coupled to the second antenna portion 23 satisfactorily.

The size and size ratio of each part of the optical disc with case 1 shown in FIG. 1 are as described in the following items (a) to (m).
(A) The size (in other words, the area) of the first antenna portion 22 along the outer periphery of the first antenna portion 22 in plan view is about 34 mm × about 34 mm = about 1,156 mm. ² ,
(B) The size of the second antenna portion 23 along the outer periphery of the second antenna portion 23 in plan view is about 109 mm × about 37 mm = about 4,033 mm ² .
(C) In plan view, the size of the disk storage case 3 (in other words, the cover portion 5) is about 125 mm × about 141 mm = about 17,625 mm ² ,
(D) The distance between the first antenna portion 22 and the second antenna portion 23 (in other words, the length of each connection pattern portion 24) is about 8 mm,
(E) The ratio of the length in the left-right direction of the second antenna portion 23 to the length in the left-right direction of the first antenna portion 22 is about 109 mm ÷ about 34 mm = about 3.21.
(F) The ratio of the length in the front-rear direction of the second antenna part 23 to the length in the front-rear direction of the first antenna part 22 is about 37 mm ÷ about 34 mm = 1.09.
(G) In plan view, the ratio of the size of the second antenna portion 23 to the size of the first antenna portion 22 (above (b) / (a)) is about 3.49,
(H) The ratio of the size of the first antenna portion 22 to the size of the disc storage case 3 (in other words, the cover portion 5) in plan view (above (a) / (c)) Is about 0.0656,
(I) The ratio of the size of the second antenna portion 23 to the size of the disk storage case 3 (in other words, the cover portion 5) in plan view (above (b) / above (c)) Is about 0.229,
(J) In a plan view, the ratio of the length in the left-right direction of the first antenna portion 22 to the length in the left-right direction of the disk storage case 3 (in other words, the cover portion 5) is about 34 mm ÷ about 125 mm. = About 0.272,
(K) In a plan view, the ratio of the length in the left-right direction of the second antenna portion 23 to the length in the left-right direction of the disk storage case 3 (in other words, the cover portion 5) is about 109 mm ÷ about 125 mm. = About 0.872,
(L) In a plan view, the ratio of the length in the front-rear direction of the first antenna portion 22 to the length in the front-rear direction of the disk storage case 3 (in other words, the cover portion 5) is about 34 mm ÷ about 141 mm. = 0.241, and (m) the ratio of the length in the front-rear direction of the second antenna portion 23 to the length in the front-rear direction of the disk storage case 3 (in other words, the cover portion 5) in plan view Is about 37 mm / about 141 mm = about 0.262.

  In the embodiment shown in FIGS. 1 to 4, the first antenna portion 22 is configured in a substantially square shape or a substantially rectangular shape. However, the first antenna portion 22 has a substantially hexagonal shape, a substantially octagonal shape, and a substantially circular shape as long as it extends in a substantially loop shape along the electronic tag 7 when the optical disc 1 with a case is viewed in a plan view. It can also be configured in another shape such as a substantially elliptical shape. Further, the second antenna portion 23 is formed in a substantially rectangular shape when seen in a plan view. However, the second antenna portion 23 can also be configured in another shape such as a substantially oval shape or a long and thin elliptical shape in plan view. In any of these cases, when viewed in plan, the left and right portions 27a, 27b of approximately triangular shapes formed between the outer periphery of the optical disc 2 and the outer periphery of the disc storage case 3, respectively, It is preferable that it exists at least partially inside the second antenna portion 23. In other words, when viewed in plan, the left side portion 28a such as an approximately triangular shape surrounded by the outer periphery of the optical disc 2, the first pattern portion 23a, and the second and third pattern portions 23b and 23c, respectively. It is preferable that the right part 28 b exists outside the outer periphery of the optical disc 2.

In the present invention, the size and size ratio of each part of the optical disc with case 1 described in the above items (a) to (m) are generally the following items (A) to ( The size range or size ratio range described in the item M) is preferable. In addition, the size range or size ratio range in parentheses in the following items (A) to (M) indicates a more preferable size range or size ratio range.
(A) The size of the first antenna unit 22 along the outer periphery of the first antenna unit 22 in a plan view has a range of 760 to 1,560 mm ² (920 to 1,400 mm ² ),
(B) The size of the second antenna portion 23 along the outer periphery of the second antenna portion 23 in a plan view is 2,680 to 5,380 mm ² (3,220 to 4,840 mm ^2). ) Range,
(C) The size of the disk storage case 3 (in other words, the cover portion 5) in a plan view is in the range of 11,800 to 23,600 mm ² (14,000 to 22,000 mm ² ),
(D) The distance between the first antenna portion 22 and the second antenna portion 23 (in other words, the length of each connection pattern portion 24) is 6 to 10 mm (6.6 to 9.4 mm). Range,
(E) The ratio of the length in the left-right direction of the second antenna portion 23 to the length in the left-right direction of the first antenna portion 22 is in the range of 2.4 to 4 (2.6 to 3.8),
(F) The ratio of the length in the front-rear direction of the second antenna part 23 to the length in the front-rear direction of the first antenna part 22 is in the range of 0.8 to 1.4 (0.9 to 1.3). ,
(G) The ratio of the size of the second antenna portion 23 to the size of the first antenna portion 22 (the above (B) term / (A) term) is 2.6 to 4 in plan view. .4 (2.9-4.1) range,
(H) The ratio of the size of the first antenna portion 22 to the size of the disc storage case 3 (in other words, the cover portion 5) in plan view (above (A) / (C)) Is in the range of 0.042 to 0.088 (0.052 to 0.078),
(I) The ratio of the size of the second antenna portion 23 to the size of the disk storage case 3 (in other words, the cover portion 5) in plan view (above (B) / (C)) Is in the range of 0.14 to 0.32 (0.18 to 0.28),
(J) In a plan view, the ratio of the length in the left-right direction of the first antenna portion 22 to the length in the left-right direction of the disk storage case 3 (in other words, the cover portion 5) is 0.2-0. .34 (0.22-0.32) range,
(K) In a plan view, the ratio of the length in the left-right direction of the second antenna portion 23 to the length in the left-right direction of the disk storage case 3 (in other words, the cover portion 5) is 0.6 to 1. .2 (0.7-1) range,
(L) In a plan view, the ratio of the length in the front-rear direction of the first antenna portion 22 to the length in the front-rear direction of the disk storage case 3 (in other words, the cover portion 5) is 0.18-0. .3 (0.2 to 0.28) and (M) in plan view, the second antenna portion 23 with respect to the longitudinal length of the disk storage case 3 (in other words, the cover portion 5). The ratio of the length in the front-rear direction is in the range of 0.19 to 0.33 (0.21 to 0.31).

2. Structure of Reader Antenna Forming Plate Next, the structure of the reader antenna forming plate 31 is divided into “(1) first embodiment” and “(2) second embodiment”. 5 and FIG. 6 will be described.

(1) First Embodiment FIG. 5 shows a reader antenna forming plate 31 in the first embodiment. The reader antenna forming plate 31 includes a substantially horizontally long and substantially rectangular substrate 32 (in other words, an antenna forming target member) 32 and an intermediate in either one surface or the thickness direction of the antenna forming target member 32. And the reader antenna 33 formed in the section. The reader antenna 33 may be a reader / writer antenna. Further, the antenna forming target member 32 includes an article management shelf (in other words, an optical disc management shelf with a case), an article management box (in other words, an optical disc management box with a case), and an article management stand (in other words, with a case). It may be a shelf board of an optical disk management stand), an article placement board such as a base board, a back board, a top board, or the like.

  As shown in FIG. 5, the reader antenna 33 is composed of a first loop antenna portion A and a second loop antenna portion B. 5 and 6, the width of each pattern portion of the antenna patterns 34 of the first and second loop antenna portions A and B is shown thicker than the actual for convenience of illustration. The width of the antenna pattern 34 of the first loop antenna portion A is shown to be narrower than the width of the antenna pattern 34 of the second loop antenna portion B, but the first and second loop antenna portions A, The actual width of each pattern portion of the B antenna pattern 34 may be substantially the same.

  As shown in FIG. 5, each of the first and second loop antenna portions A and B may be of a loop type such as a one loop, and may be an electromagnetic coupling type electronic tag 7 or an electromagnetic coupling type booster antenna. 8 (particularly, the second antenna portion 23). As shown in FIG. 5, the first and second loop antenna portions A and B are both connected to the substantially loop-shaped antenna pattern 34 and to both ends of the substantially loop-shaped antenna pattern 34, respectively. And a pair of terminal portions 35a and 35b which are close to each other at a narrow interval. Further, since the gap 36 is provided between the pair of terminal portions 35a and 35b, the gap 36 similarly exists between both ends of the substantially loop-shaped antenna pattern 34. Further, the pair of terminal portions 35a and 35b may be electrically connected to a switcher (not shown) of a reader / writer device (not shown) by an appropriate lead wire or the like. In addition, the substantially loop-shaped antenna patterns 34 of the first and second loop antenna portions A and B can be formed to have substantially the same width. In addition, the pair of terminal portions 35a and 35b can be formed to have substantially the same width (for example, a width of about 10 mm) as those of the substantially loop-shaped antenna pattern 34 as necessary.

  As shown in FIG. 5, the substantially loop-shaped antenna pattern 34 of the first antenna portion A extends in the length direction of the substrate 32 (in other words, the frontage direction) x with the terminal portions 35 a provided continuously. The first pattern portion 41 located on one side (the rear edge side in FIG. 5) and the one side (the left edge side in FIG. 5) extending in the width direction (in other words, the depth direction) y of the substrate 32. The second pattern portion 42 positioned, the third pattern portion 43 positioned on the other side (the front edge side in FIG. 5) extending in the length direction x of the substrate 32, and the terminal portion 35b are connected. The 4th pattern part 44 located in the other side (right edge side in FIG. 5) extended in the width direction y of the board | substrate 32 may be successively provided. The substantially loop-shaped antenna pattern 34 of the first antenna portion A may be configured in a loop shape excluding the gap 36 as a whole. Furthermore, the substantially loop-shaped antenna pattern 34 of the first antenna portion A is a one-loop pattern that does not have an intersecting portion where one part and another part intersect each other. In the text, “intersection” means that the connection is not electrically crossed but is crossed in a projection view (in other words, in plan view) of the substrate 32 as viewed from above. is doing.

  As shown in FIG. 5, the third pattern portion 43 of the first antenna portion A is configured in a meander shape (in other words, a meandering shape). Specifically, the third pattern portion 34 is slightly separated from the edge 45 on the other side extending in the length direction x of the substrate 32 and is substantially parallel to the edge 45 (in other words, A plurality of base line portions 47 extending intermittently so that an intermittent portion 46 is generated between them, and these intermittent portions. Preferably, it consists of a plurality of bent portions 48 respectively existing between the base line portions 47 extending in other words (in other words, the intermittent portions 46). Each base line portion 47 extends in the length direction of the substrate 32 along the center of the two substantially loop-shaped antenna patterns 34 of the first and second antenna portions A and B in the width direction y of the substrate 32. Virtual center line C of the entire two antenna patterns 34 extending to x (in other words, the entire reader antenna 33 excluding the pair of terminal portions 35a and 35b of the first and second antenna portions A and B). Rather than the edge 45 on the other side. The first pattern portion 41 extends over almost the entire length of the substrate 32 in the length direction x.

  As shown in FIG. 5, the second pattern portion 42 of the first antenna portion A is slightly apart from the edge portion 51 on the one side extending in the width direction y of the substrate 32, and with respect to the edge portion 51. The substrate 32 extends substantially over the entire length in the width direction y of the substrate 32 in a substantially parallel state (in other words, substantially parallel to the width direction y of the substrate 32 and substantially linear). The first pattern portion 41 of the first antenna portion A is close to the edge portion 52 on the one side extending in the length direction x of the substrate 32 and is substantially parallel to the edge portion 52 ( In other words, the substrate 32 extends substantially over the entire length in the length direction x of the substrate 32 in a state substantially parallel to the length direction x of the substrate 32 and is substantially linear. Further, the fourth pattern portion 44 of the first antenna portion A is close to the edge 53 on the other side extending in the width direction y of the substrate 32 and is substantially parallel to the edge 53. (In other words, the substrate 32 is substantially parallel to the width direction y of the substrate 32 and is substantially linear) and thus extends over substantially the entire length of the substrate 32 in the width direction y.

As shown in FIG. 5, each bent portion 48 of the third pattern portion 43 has an end portion on the edge portion 45 side connected to an end portion on the edge portion 53 side of the base line portion 47 on the edge portion 45 side. In addition, the first rising portion 54 rising substantially toward the edge portion 52 and the edge portion on the edge portion 53 side of the base line portion 47 on the edge portion 51 side are connected to the edge portion on the edge portion 45 side. And a second rising portion 55 rising substantially toward the edge portion 52, and respective end portions on the edge 52 side of the first and second rising portions 54, 55 (in other words, the tip The connecting portion 56 extends substantially in the length direction x of the substrate 32 so as to be continuously provided. Each bent portion 48 is a substantially rectangular convex portion as a whole. In this case, it is preferable that the connecting portion 56 substantially extends in the length direction x of the substrate 32 on the edge 52 side from the center line C. Accordingly, the first and second rising portions 54 and 55 are separated from one side (specifically, the portion on the edge 45 side) of the substrate 32 divided into two by the center line C to the other side (specifically Specifically, it is preferable to extend so as to be substantially orthogonal to the center line C (up to the edge 52 side). The distance L ₁ between the first and second rising portions 54 and 55 of each bent portion 48 in the length direction x of the substrate 32 (in other words, the length of each connecting portion 56) is a pair adjacent to each other. of the bent portion 48 _(in other words, the length of the base line portion 47) spacing L ₂ in the longitudinal direction x of the substrate 32 may be substantially identical.

As apparent from observation of FIG. 5, the substantially loop-shaped antenna pattern 34 of the second antenna portion B is different from the substantially loop-shaped antenna pattern 34 of the first antenna portion A with respect to the center line C. As shown in FIG. In other words, the antenna pattern 34 of the second antenna portion B is substantially the middle point in the length direction x of the center line C (in other words, the first antenna portion 34 is different from the antenna pattern 34 of the first antenna portion A). The antenna pattern 34 is substantially point-symmetrically rotated by 180 [deg.] With the substantially central point of the antenna pattern 34 of the portion A) as a symmetry point. However, as apparent from FIG. 5, the antenna pattern 34 of the second antenna portion B is approximately 3 / of the distance L ₁ (in other words, the distance L ₂ ) from the antenna pattern 34 of the first antenna portion A. 5 (in the illustrated embodiment, about 45 mm) is formed on the substrate 32 in a state shifted to the edge 51 side (in other words, the length direction x). Therefore, the above description of the antenna pattern 34 of the first antenna portion A is a change caused by being shifted toward the edge 51 as described above and being line symmetric or point symmetric as described above. Except for matters, the same applies to the antenna pattern 34 of the second antenna portion B.

When the antenna pattern 34 of the second antenna portion B is slightly added with reference to FIG. 5, the second pattern portion 42 is close to the edge portion 51 and substantially parallel to the edge portion 51 (in other words, For example, the substrate 32 extends in a state substantially parallel to the width direction y of the substrate 32. The fourth pattern portion 44 of the second antenna portion B is slightly separated from the edge portion 53 and substantially parallel to the edge portion 53 (in other words, substantially parallel to the width direction y of the substrate 32). It is extended. As is apparent from FIG. 5, each base line portion 47 of the first antenna portion A is substantially the same in the width direction y of the substrate 32 as each connection portion 56 of the second antenna portion B in plan view. Therefore, each of the connecting portions 56 overlaps with each other by about 3/5 so as to form a longitudinally overlapping portion when seen in a plan view. And each connection part 56 of the 1st antenna part A exists in the substantially same position in the width direction y of the board | substrate 32 with each base line part 47 of the 2nd antenna part B seeing planarly. Therefore, when viewed in a plan view, each of the base line portions 47 overlaps with each other by approximately 3/5. This is because the center line in the width direction y of the substrate 32 of each of the bent portions 48 of the first and second antenna portions A and B each formed by a substantially rectangular convex portion is substantially the same as the center line C. This is because they match. The base line part 47 of one antenna part A or B and the connecting part 56 of the other antenna part B or A do not need to overlap each other as described above, and are mutually in the width direction y of the substrate 32. Although they may be shifted to some extent, it is preferable that they are close to each other so as to constitute a longitudinal proximity portion instead of the longitudinal overlap portion. Further, the magnitude of the deviation of the antenna pattern 34 of the second antenna portion B shown in FIG. 5 in the length direction x with respect to the antenna pattern 34 of the first antenna portion A is generally considered from the viewpoint of practicality. In particular, the distance L ₁ (in other words, the distance L ₂ ) is preferably in the range of 0.45 to 0.85, and more preferably in the range of 0.6 to 0.7.

  In the reader antenna 33 shown in FIG. 5 (in other words, FIG. 7), each of the first and second loop antennas A and B (in other words, the reader antenna forming plate 31) is arranged in front and rear (FIG. 5). The top and bottom of () may be reversed. Further, in the reader antenna 33 shown in FIG. 5, feed terminal portions 35 a and 35 b are provided on the first pattern portion 41 having a long shape of the first antenna A, and a relatively short baseline portion of the second antenna B is provided. 47 is provided with power supply terminal portions 35a and 35b. However, in contrast to this, in the reader antenna 33 shown in FIG. 5, feed terminal portions 35 a and 35 b are provided on the relatively short base line portion 47 of the first antenna A, and the longitudinal shape of the second antenna B is provided. The first pattern portion 41 may be provided with power supply terminal portions 35a and 35b. These points also apply to the reader antenna 33 shown in FIG.

(2) Second Embodiment FIG. 6 shows a reader antenna forming plate 61 in the second embodiment. The reader antenna forming plate 61 shown in FIG. 6 may have substantially the same configuration as the reader antenna forming plate 31 shown in FIG. 5 except that the pattern shape of the reader antenna 33 is slightly different.

The reader antenna forming plate 61 shown in FIG. 6 is different from the reader antenna forming plate 31 shown in FIG. 5 in the following items (a) and (b).
(A) The reader antenna forming plate 61 shown in FIG. 6 includes a front surface (that is, a front surface of the reader antenna 33 shown in FIG. 5) and a back surface of the reader antenna forming plate 33 shown in FIG. And (b) the second and fourth pattern portions 42 and 44 of the first and second antenna portions A and B of the reader antenna forming plate 61 shown in FIG. As both the first and second rising portions 54 and 55 go from the edge 45 on the other side toward the edge 52 on the one side, the edge 53 on the other side from the edge 51 on the other side. Inclined by an angle θ toward.

  In the reader antenna 33 shown in FIG. 6 (in other words, FIG. 8), in contrast to the case described in the above section (b), the second and fourth of the first and second antenna portions A and B are used. As the pattern portions 42 and 44 and the first and second rising portions 54 and 55 both move from the edge 45 on the other side toward the edge 52 on the one side, the edge portions 53 on the other side It may be inclined by an angle θ toward the edge 51 on one side.

3. Usage Form of Reader Antenna Forming Plate Next, usage forms of the reader antenna forming boards 31 and 61 shown in FIGS. 5 and 6 will be described with reference to FIGS.

  FIG. 7 shows one usage pattern of the reader antenna forming plate 31 shown in FIG. In FIG. 7, a large number of optical disks 1 with cases shown in FIGS. 1 to 4 are arranged on the reader antenna forming plate 31 in a state of being bundled with each other. In this case, a large number of discs 1 with a case are previously bundled and arranged in a state of being stacked so as to be directed substantially in the x direction. Further, in the bundled state, it is preferable that each of the peripheral side surfaces 21 on the hinge side of the large number of optical disks 1 face substantially upward. In other words, the entire second loop antenna portion 23 of the booster antenna 8 is preferably located between the first loop antenna portion 22 and the reader antenna 33.

  In the state shown in FIG. 7, it is assumed that a high frequency of 13.56 MHz is alternately supplied to the first and second antenna portions A and B provided on the reader antenna forming plate 31 as the optical disc mounting plate. In this case, electromagnetic coupling is reliably performed between the first and second antenna portions A and B and the second antenna portion 23 of the booster antenna 8 provided on each of the multiple discs 1 with a case. In addition, electromagnetic coupling is reliably performed between the first antenna portion 22 of these booster antennas 8 and the small antennas of the electronic tags 7 respectively provided on the multiple optical disks 2. Therefore, the information recorded in each of the large number of electronic tags 7 is satisfactorily transmitted from the reader antenna 33 to the reader / writer device via the booster antenna 8.

FIG. 8 shows one usage pattern of the reader antenna forming plate 61 shown in FIG. The usage pattern shown in FIG. 8 is different from the usage pattern shown in FIG. 7 as described in the following items (a) and (b).
(A) In the usage pattern shown in FIG. 7, the reader antenna 33 shown in FIG. 5 is used, whereas in the usage pattern shown in FIG. 8, the reader antenna 33 shown in FIG. 6 is used. 7 and (b), in the usage pattern shown in FIG. 7, a large number of discs 1 with a case are bundled and arranged so as to be substantially oriented in the x direction, whereas in the usage pattern shown in FIG. The surface direction of the case-equipped disk 1 is substantially parallel to the second and fourth pattern portions 42 and 44 of the first and second antenna portions A and B and the first and second rising portions 54 and 55. In addition, a large number of discs 1 with a case are bundled and arranged so as to be oriented in a direction inclined by an angle θ with respect to the x direction.

  As described in the above item (b), in order to bundle and arrange a large number of case-equipped disks 1 in a state of being stacked so as to be oriented in a direction inclined substantially by an angle θ with respect to the x direction, Similarly, the left and right side plates such as the article arrangement box and the article management table, the partition board, and the like may be similarly inclined by substantially the angle θ. In addition, spacers having a substantially triangular prism shape or a substantially quadrangular prism shape having inclined surfaces inclined substantially by an angle θ may be attached to the left and right side plates.

As described above, the first and second antenna portions A and B of the reader antenna 33 and the first and second rising portions 54 and 55 of the second and fourth pattern portions 42 and 44 and the first and second rising portions 54 and 55 are approximately angle θ. By tilting and tilting a large number of case-equipped disks 1 by an angle θ, the following effects (c) and (d) are obtained.
(C) the interference between the respective electronic tags 7 of the cased discs 1 adjacent to each other is suppressed, and (d) the recording layer (in other words, the conductive layer of each optical disc 2 of the cased discs 1 adjacent to each other). The demagnetizing field from the layer) can be suppressed to some extent.

  In this case, not only the disk 1 with case (in other words, the booster antenna 8) is inclined by substantially the angle θ, but the predetermined pattern portions of the first and second antenna portions A and B are also inclined similarly. . Therefore, since the electronic tag 7 and the predetermined pattern portion are substantially parallel to each other, a sufficient magnetic field can be supplied from the reader antenna 33 to the electronic tag 7 via the booster antenna 8. The inclination angle θ is about 15 ° in the illustrated embodiment, but it is generally preferably 0 ° <θ ≦ 30 ° from the viewpoint of practicality, and 10 ° ≦ θ ≦. More preferably, it is 20 °. Note that as described above with reference to FIG. 6, the inclination angle θ may be reversed to the left and right in the case illustrated in FIGS. 6 and 8. However, in this case, it is preferable that the tilt angle θ of the cased disk 1 is also reversed left and right.

FIG. 9 shows another usage pattern of the reader antenna forming plate 31 shown in FIG. The usage pattern shown in FIG. 9 is different from the usage pattern shown in FIG. 7 as described in the following items (e) and (f).
(E) In the usage pattern shown in FIG. 7, the reader antenna forming plate 31 is used as an optical disk mounting plate, whereas in the usage pattern shown in FIG. It is used as one of the side plates or the front plate, and (f) the optical disc mounting plate 62 is provided separately from the reader antenna forming plate 31, and a large number of optical discs 1 with cases are similarly bundled. It must be arranged on the optical disk mounting plate 62 in an arrayed state.

  Even in the use state shown in FIG. 9, the entire second loop antenna portion 23 of the booster antenna 8 is located between the first loop antenna portion 22 and the reader antenna 33. Therefore, also in this case, the information recorded in each of the large number of electronic tags 7 is satisfactorily transmitted from the reader antenna 33 to the reader / writer device via the booster antenna 8.

Three types of usage forms of the reader antenna forming plates 31 and 61 shown in FIGS. 5 and 6 have been described with reference to FIGS. 7 to 9 as described above. However, as the usage pattern of the reader antenna forming plates 31 and 61 shown in FIG. 5 and FIG. 6, the following three types of usage patterns are partially combined, for example, in the following items (g) to (i): As described, various things can be conceived in addition to the above three kinds.
(G) In the form of use shown in FIG. 7, as shown in FIG. 8, a large number of discs 1 with a case are bundled and arranged so as to be oriented in a direction inclined by an angle θ with respect to the x direction. thing,
(H) In the usage pattern shown in FIG. 8, as shown in FIG. 5, the second and fourth pattern portions 42, 44 of the first and second antenna portions A, B of the reader antenna forming plates 31, 61 are provided. As shown in FIG. 8, the first and second rising portions 54 and 55 extend substantially in the width direction (in other words, the y direction), and (i) in the usage mode shown in FIG. In addition, a large number of discs with a case 1 are bundled and arranged so as to be oriented in a direction inclined by an angle θ with respect to the x direction.

  In any of the three types of usage described in the above items (g), (h) and (i), a large number of discs 1 with a case are directed in a direction inclined by an angle θ with respect to the x direction. Thus, they are arranged in a stacked state so as to extend in the x direction. Accordingly, the axes of the large number of electronic tags 7 of the large number of discs 1 with cases are not substantially coaxial with each other and are slightly shifted in the front-rear direction (in other words, the y direction). Compared with the case where the respective axis centers of the individual electronic tags 7 are substantially coaxial with each other, it is possible to reduce the deterioration of the reading performance of the electronic tag 7 by the reader antenna 33.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to these embodiments, and various modifications can be made based on the spirit of the invention described in the claims. And corrections are possible.

  For example, in the embodiment described above, the corner portions of the first and second loop antenna portions 22 and 23 of the booster antenna 8 and the first and second loop antenna portions A and B of the reader antenna 33 are substantially equal to each other. A sharp shape such as a right angle. However, one or more or all of these corner portions may be rounded.

  In the above-described embodiment, the first and second loop antenna portions 22 and 23 of the booster antenna 8 are wound once. However, the booster antenna 8 is wound a plurality of times in a spiral shape or the like. It may be a thing.

  Further, in the embodiment described above, the information recorded on the large number of electronic tags 7 is read by the reader antenna 33 formed on the reader antenna forming plates 31 and 61. However, the optical disc storage case 3 and the optical disc 1 with the case according to the present invention can read the above information with a scanning reader (for example, a handy reader) for optical disc management.

DESCRIPTION OF SYMBOLS 1 Optical disk with a case 2 Optical disk 3 Optical disk storage case 4 Base part (case structural member)
5 Cover (case component)
6 Disc placement part (case component)
7 RFID tag 8 Booster antenna 14 Inside plane (continuous plane)
22 1st loop antenna part 23 2nd loop antenna part 23a 1st pattern part 23b 2nd pattern part 23c 3rd pattern part 23d 4th pattern part 24 Connection pattern part 32 Board | substrate (antenna formation object member)
33 Antenna for reader 34 Antenna pattern 41 having a substantially loop shape First pattern portion 42 Second pattern portion 43 Third pattern portion 44 Fourth pattern portion 45 Edge 47 on the other side Baseline portion 48 Bending portion 51 Edge 52 on one side Edge 53 on one side 54 Edge 54 on the other side First rising portion 55 Second rising portion 56 Connecting portion 61 Antenna formation plate A for reader A First loop antenna portion B 2 loop antenna parts x length direction (frontage direction)
y Width direction (depth direction)
θ Inclination angle

Claims (12)

In an optical disk storage case for storing an optical disk,
A plurality of case components constituting the optical disk storage case;
A booster antenna disposed on a predetermined continuous surface of a predetermined case component among the plurality of case components;
The booster antenna has a first loop antenna portion that can be substantially opposed to an electronic tag disposed in a substantially central portion of the optical disc, a first peripheral side portion of the predetermined case component, and the first A second loop antenna unit disposed between the loop antenna unit and a connection pattern unit connecting the first loop antenna unit and the second loop antenna unit;
The second loop antenna portion is connected to a first pattern portion extending substantially along the entire length of the first peripheral side portion and a second portion substantially continuous to one end of the first peripheral side portion. A second pattern portion extending substantially along the circumferential side portion of the first circumferential side portion and a third circumferential side portion extending substantially along the other end of the first circumferential side portion. An optical disk storage case, comprising: a third pattern portion; and a fourth pattern portion that substantially connects the second pattern portion and the third pattern portion.   The optical disk storage case according to claim 1, wherein the fourth pattern portion is connected to the connection pattern portion.   3. The optical disk storage case according to claim 1, wherein the booster antenna is a one-turn loop antenna.   4. The optical disc storage case according to claim 1, wherein the predetermined case constituent member is a cover portion and / or a base portion of the optical disc storage case.   The optical disc storage case according to any one of claims 1 to 4, wherein the predetermined continuous surface of the predetermined case constituent member is an inner surface of the cover portion and / or the base portion. .   The ratio of the size of the second antenna portion along the outer periphery of the second antenna portion to the size of the first antenna portion along the outer periphery of the first antenna portion is 2. 6. The optical disk storage case according to claim 1, wherein the optical disk storage case is in a range of 9 to 4.1. An optical disk storage case according to any one of claims 1 to 6,
An optical disk stored in the disk storage space of the optical disk storage case,
An optical disk with a case, characterized in that the optical disk includes the electronic tag disposed at a substantially central portion of the optical disk so as to surround a central opening of the optical disk. In the optical disc management system for managing the optical disc with a case according to claim 7,
An optical disc management system comprising a reader antenna device having a reader antenna capable of wirelessly communicating with the electronic tag via the booster antenna. The reader antenna is composed of first and second loop antenna portions respectively provided on the antenna formation target member,
Each of the first and second loop antenna portions includes a substantially loop-shaped antenna pattern,
Each of the substantially loop-shaped antenna pattern of the first loop antenna portion and the substantially loop-shaped antenna pattern of the second loop antenna portion defines a predetermined direction of the antenna forming target member in the x-axis direction. And a first pattern portion provided on the first side in the y-axis direction that extends substantially in the x-axis direction, when the direction substantially orthogonal to the x-axis direction is the y-axis direction, The second pattern portion provided on the first side in the x-axis direction extending substantially in the y-axis direction and the first side in the y-axis direction extending substantially in the x-axis direction are A third pattern portion provided on the second side opposite to the second side and a second side opposite to the first side in the x-axis direction extending substantially in the y-axis direction. A fourth pattern portion,
A plurality of baseline portions in which each of the first pattern portion of the first loop antenna portion and the third pattern portion of the second loop antenna portion is intermittently disposed; Each having at least one bent portion provided between the plurality of baseline portions,
Each of the bent portions is configured in a substantially convex shape including a first rising portion and a second rising portion,
The first rising portion or the second rising portion of the first loop antenna portion corresponds to the first rising portion corresponding to that of the second loop antenna portion, and the second rising portion corresponding to the first rising portion. 9. The optical disk according to claim 8, wherein the first loop antenna portion is substantially displaced in the x-axis direction with respect to the second loop antenna portion so as to be disposed between the first and second loop antenna portions. Management system. Each of the bent portions further includes a connecting portion extending in the x-axis direction in order to connect the respective leading ends of the first and second rising portions.
A longitudinal overlap portion and / or a longitudinal proximity portion is configured by the connecting portion of the first loop antenna portion and the baseline portion of the second loop antenna portion,
The longitudinal overlap portion and / or the longitudinal proximity portion are configured by the baseline portion of the first loop antenna portion and the connecting portion of the second loop antenna portion. Item 10. The optical disc management system according to Item 9. The second and fourth pattern portions and the first and second rising portions extend so as to be inclined at substantially an angle θ with respect to the y-axis direction,
11. The optical disc management system according to claim 9, wherein the tilt angle [theta] is in the range of 10 [deg.] To 20 [deg.].   12. The optical disc according to claim 9, 10 or 11, wherein a plurality of the optical disc storage cases are bundled in a state of being stacked so as to be substantially oriented in the x direction and are arranged close to the antenna forming member. Management system.

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