JPH02263343A - Information recording medium - Google Patents
Information recording mediumInfo
- Publication number
- JPH02263343A JPH02263343A JP1083605A JP8360589A JPH02263343A JP H02263343 A JPH02263343 A JP H02263343A JP 1083605 A JP1083605 A JP 1083605A JP 8360589 A JP8360589 A JP 8360589A JP H02263343 A JPH02263343 A JP H02263343A
- Authority
- JP
- Japan
- Prior art keywords
- substrates
- transparent
- information part
- information
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 230000003287 optical effect Effects 0.000 abstract description 12
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、両面貼り合わせの構造を持つ情報記録媒体に
関する。Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to an information recording medium having a double-sided bonded structure.
（従来の技術）
情報記録媒体たとえば、光ディスクには第６図に示すよ
うなものが知られている。すなわち、この光ディスクは
２枚の基板１，１を貼り合わせてその対向面に記録層２
を有してなり、両面使用が可能になっている。(Prior Art) Information recording media such as optical discs as shown in FIG. 6 are known. That is, this optical disc consists of two substrates 1, 1 bonded together and a recording layer 2 on the opposing surfaces.
It has a double-sided design and can be used on both sides.
また、上記基板１，１の表面には第“７図に示すような
、商品名や製造番号などの情報５を表示するラベル３が
貼り付けられている。このラベル３は上記基板１，１の
記録層２に対する光照射を妨げることのないように、記
録層２のエリヤＡを避けたエリヤＢに貼り付けられてい
る。Furthermore, a label 3 for displaying information 5 such as a product name and a serial number is attached to the surface of the substrates 1, 1 as shown in FIG. It is attached to area B of the recording layer 2, avoiding area A, so as not to interfere with light irradiation to the recording layer 2.
このように、構成された光ディスクは使用時にはターン
テーブル４上に装着されて回転駆動されるようになって
いる。When the optical disc thus constructed is used, it is mounted on the turntable 4 and driven to rotate.
ところで、上記ラベル３を上記基板１．１の表面のター
ンテーブル装着エリヤＣに貼り付けると、光ディスクは
ラベル３を介してターテーブル４に装着されることにな
り、この状態で回転駆動されると、面ブレを発生してし
まう。By the way, when the label 3 is pasted on the turntable mounting area C on the surface of the substrate 1.1, the optical disc will be mounted on the turntable 4 via the label 3, and if it is rotated in this state. , causing surface wobbling.
このため、ターンテーブル装着エリヤＣは上記ラベル３
を避けた領域に狭く限定されていた。Therefore, the turntable mounting area C is labeled 3 above.
It was narrowly restricted to areas that avoided the
（発明が解決しようとする課題）
しかしながら、ターンテーブル装着用エリヤＣが狭くな
ると、光ディスクの保持状態が不安定化し、やはり回転
駆動時に面ブレを発生してしまうとう問題があった。(Problems to be Solved by the Invention) However, when the turntable mounting area C becomes narrow, the holding state of the optical disc becomes unstable, and there is also a problem that surface wobbling occurs during rotational driving.
また、ラベル３を基板１，１の表面に貼り付けていたた
め、長期間の使用のうちにラベル３が剥がれてしまう虞
れがあった。Furthermore, since the label 3 was attached to the surfaces of the substrates 1, 1, there was a risk that the label 3 would peel off during long-term use.
そこで、この発明は、ターンテーブル装着エリアを大き
くできるとともに、長期間使用しても情報部の表示が不
明になることがないようにした情報記録媒体を提供する
ことを目的とする。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an information recording medium that allows for a larger turntable mounting area and prevents the display of the information section from becoming unclear even after long-term use.
［発明の構成］
（課題を解決するための手段）
本発明は、上記課題を解決するために、一部に透明部を
有し重合された一対の基板と、これら一対の基板の対向
面側の透明部に記録された情報部とを具備してなること
を特徴と、また、一対の基板をその透明部が互いに重な
らないように重合したものである。[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention provides a pair of polymerized substrates having a transparent portion in part, and opposing surfaces of the pair of substrates. It is characterized by comprising an information section recorded on the transparent section of the substrate, and a pair of substrates are superposed so that the transparent sections do not overlap each other.
（作用）
重合される一対の基板の対向面側の透明部に情報部を記
録することにより、情報部を基板の表面側に露出させな
いようにして、ターンテーブル装着エリヤを広くすると
ともに、情報部が剥がれこともないようにし、また、一
対の基板をその透明部が互いに重ならないように重合す
ることにより、一方の基板の情報部のみ解読できるよう
にした。(Function) By recording the information section on the transparent portions on the opposing surfaces of the pair of substrates to be superposed, the information section is not exposed on the front surface side of the substrates, the turntable mounting area is widened, and the information section is By overlapping the pair of substrates so that their transparent parts do not overlap each other, it is possible to read only the information part of one of the substrates.
（実施例）
以下、本発明を第１図乃至第４図に示す一実施例を参照
して説明する。(Example) The present invention will be described below with reference to an example shown in FIGS. 1 to 4.
第１図は情報記憶媒体としての光ディスクを示すもので
、この光ディスクは２枚の透明な基板１１．１１を重合
してなり、これら基板１１゜１１は透明な接着剤１３に
より接着されている。FIG. 1 shows an optical disk as an information storage medium, and this optical disk is made by superposing two transparent substrates 11.11, and these substrates 11.11 are bonded together with a transparent adhesive 13.
また、上記基板１１，１１の対向面側には第４図にも示
すように、記録層１５が成膜されている。Further, as shown in FIG. 4, a recording layer 15 is formed on the opposing surfaces of the substrates 11, 11.
前記記録層１５の中央部には円形状の透明部１６が形成
され、この透明部１６には商品名や製造番号などを表示
する情報部１４が印刷されている。A circular transparent section 16 is formed in the center of the recording layer 15, and an information section 14 for displaying a product name, serial number, etc. is printed on this transparent section 16.
したがって、前記基板１１．１１の透明部１６を介して
上記情報部１４の内容を読取ることができるようになっ
ている。Therefore, the contents of the information section 14 can be read through the transparent section 16 of the substrate 11.11.
なお、この場合、基板１１越しに解読することを目的と
するときは、情報部１４の文字、図形は反転した状態と
し、また、他方の基板１１越しに解読することを目的と
するときは、情報部１４の文字、図形はそのままの形状
にする必要がある。In this case, when the purpose is to decode through the board 11, the characters and figures in the information section 14 are inverted, and when the purpose is to decode through the other board 11, The characters and figures in the information section 14 must remain in the same shape.
つぎに、上記光ディスクの製造手順について説明する。Next, the manufacturing procedure of the above-mentioned optical disc will be explained.
まず、第３図に示す透明な光デイスク基板１１の中央部
に円形状のマスク（図示しない）を貼り付けたのち、記
録膜１５を成膜する。この成膜後、マスクを剥がして透
明部１６を形成し、この透明部１６にたとえばスクリー
ン印刷の方法で第４図に示すように、情報部１４を印刷
する。そして、このように成形した基板１１を２枚用意
し、その記録膜１５側の面にそれぞれ透明な接着剤１３
をＰ：ｔ！’ｌＩｉ Ｌ、これら基板１１．１１を重合
接着する。First, a circular mask (not shown) is attached to the center of the transparent optical disk substrate 11 shown in FIG. 3, and then the recording film 15 is formed. After this film formation, the mask is peeled off to form a transparent portion 16, and an information portion 14 is printed on this transparent portion 16 by, for example, a screen printing method, as shown in FIG. Then, two substrates 11 formed in this manner are prepared, and a transparent adhesive 13 is applied to each surface on the recording film 15 side.
P:t! 'lIi L, these substrates 11.11 are polymerized and bonded.
このように接着すると、第２図に示すように、成膜時の
マスク領域（透明部１６）を通して基板１１．１１越し
、に情報部１４を解読できる。When bonded in this manner, the information portion 14 can be read through the substrate 11.11 through the mask region (transparent portion 16) during film formation, as shown in FIG.
上述したように、一対の基板１１．１１の接合面側の透
明部１６に情報部１４を印刷するため、情報部１４が基
板１１．１１の表面に露出しない。As described above, since the information portion 14 is printed on the transparent portion 16 on the bonding surface side of the pair of substrates 11.11, the information portion 14 is not exposed on the surface of the substrate 11.11.
したがって、ターンテーブル装着エリヤＣを広くでき、
回転駆動時の面ブレを防止できるとともに、従来のよう
に、情報部１４が剥がれてしまうこともない。Therefore, the turntable mounting area C can be widened,
It is possible to prevent surface wobbling during rotational driving, and the information section 14 does not peel off as in the conventional case.
なお、上記一実施例のものにおいては、情報部１４を反
転形状で印刷した場合、一方の基板１１の透明部１６か
らその情報部１４を読取るとき、これと同時に他方の基
板１１の情報部１４が反転した状態で見えてしまい解読
しずらくなる。In the embodiment described above, when the information section 14 is printed in an inverted shape, when the information section 14 is read from the transparent section 16 of one substrate 11, the information section 14 of the other substrate 11 is simultaneously read. appears inverted, making it difficult to decipher.
そこで、本発明は第５図（ａ）に示すように、基板２１
．２１にそれぞれ円弧状の透明部２２を形成し、この透
明部２２に第５図（ｂ）に示すように、情報部２３を印
刷した後、これら基板２１゜２１をその透明部２２が互
いに重ならないように重合接着するようにしても良い。Therefore, as shown in FIG. 5(a), the present invention provides a substrate 21
．． After forming an arc-shaped transparent portion 22 on each of the substrates 21 and 21 and printing an information portion 23 on the transparent portion 22 as shown in FIG. Polymerization and adhesion may be used to prevent this from occurring.
この実施例によれば、第５図（Ｃ）に示すように、必要
な面の情報部２３だけが解読され、他方側の基板２１の
情報部２３は記録層２４によって遮られ、解読し易くな
る。According to this embodiment, as shown in FIG. 5(C), only the information section 23 on the necessary side is decoded, and the information section 23 on the other side of the substrate 21 is blocked by the recording layer 24, making it easy to decode. Become.
また、上記一実施例においては、基板１１゜１１の透明
部１６に直接情報部１４を印刷したが、これに限られる
ことなく、記録膜保護用の透明保護膜の上に情報部１４
を印刷するようにしてもよい。Further, in the above embodiment, the information portion 14 is printed directly on the transparent portion 16 of the substrate 11°11, but the information portion 14 is printed directly on the transparent protective film for protecting the recording film.
may also be printed.
［発明の効果］
以上説明したように、本発明によれば、一対の基板℃接
合面側に情報部を記録するから、情報部が基板の表面に
露出せず、ターンテーブル装着エリヤを広くでき、回転
駆動時の面ブレを防止できるとともに、従来のように、
情報部が剥がれるといったこともない。[Effects of the Invention] As explained above, according to the present invention, since the information section is recorded on the bonding surface side of the pair of substrates, the information section is not exposed on the surface of the substrate, and the turntable mounting area can be widened. , it is possible to prevent surface wobbling during rotational drive, and unlike conventional
There is no such thing as the intelligence department being stripped away.
また、一対の基板をその透明部が互いに重ならないよう
に重合するから、一方の基板の情報部のみを、他方の基
板の情報部に煩わされることなく容易に解読できるとい
う効果を奏する。Furthermore, since the pair of substrates are superimposed so that their transparent portions do not overlap each other, it is possible to easily read only the information portion of one substrate without being bothered by the information portion of the other substrate.
第１図乃至第４図は本発明の一実施例を示すもので、第
１図は光ディスクを示す正面図、第２図はその平面図、
第３図は基板を示す平面図、第４図は基板の透明部に情
報部を印刷した状態を示す平面図、第５図は他の実施例
を示す説明図、第６図は従来の光ディスクを示す正面図
、第７図はそのラベルを示す平面図である。
１１．１１・・・基板、１５・・・情報部、１６・・・
透明部。
出願人代理人 弁理士 鈴江武彦
第３図
第２図
第４図
（ａ）
（ｂ）
（ｃ）
第５図
第７図1 to 4 show an embodiment of the present invention, in which FIG. 1 is a front view showing an optical disk, FIG. 2 is a plan view thereof,
Fig. 3 is a plan view showing the substrate, Fig. 4 is a plan view showing the information section printed on the transparent part of the substrate, Fig. 5 is an explanatory view showing another embodiment, and Fig. 6 is a conventional optical disc. 7 is a front view showing the label, and FIG. 7 is a plan view showing the label. 11.11... Board, 15... Information department, 16...
Transparent part. Applicant's representative Patent attorney Takehiko Suzue Figure 3 Figure 2 Figure 4 (a) (b) (c) Figure 5 Figure 7
Claims (2)
れら一対の基板の対向面側の透明部に記録された情報部
とを具備してなることを特徴とする情報記録媒体。(1) An information recording medium comprising a pair of polymerized substrates having a transparent portion in part, and an information portion recorded on the transparent portion on the opposing surface of the pair of substrates. .
いように重合された一対の基板と、これら一対の基板の
対向面側の透明部に記録された情報部とを具備してなる
ことを特徴とする情報記録媒体。(2) A pair of substrates having a transparent portion in part and superimposed so that the transparent portions do not overlap each other, and an information portion recorded on the transparent portion on the opposing surface side of the pair of substrates. An information recording medium characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1083605A JP2735282B2 (en) | 1989-03-31 | 1989-03-31 | Information recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1083605A JP2735282B2 (en) | 1989-03-31 | 1989-03-31 | Information recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02263343A true JPH02263343A (en) | 1990-10-26 |
| JP2735282B2 JP2735282B2 (en) | 1998-04-02 |
Family
ID=13807116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1083605A Expired - Lifetime JP2735282B2 (en) | 1989-03-31 | 1989-03-31 | Information recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2735282B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0420685U (en) * | 1990-06-12 | 1992-02-20 | ||
| EP0735530A1 (en) * | 1995-03-31 | 1996-10-02 | Toshiba-Emi Limited | Method and apparatus for manufacturing bonded disks |
| WO2006038597A1 (en) * | 2004-10-05 | 2006-04-13 | Fujifilm Corporation | Optical disc |
-
1989
- 1989-03-31 JP JP1083605A patent/JP2735282B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0420685U (en) * | 1990-06-12 | 1992-02-20 | ||
| EP0735530A1 (en) * | 1995-03-31 | 1996-10-02 | Toshiba-Emi Limited | Method and apparatus for manufacturing bonded disks |
| WO2006038597A1 (en) * | 2004-10-05 | 2006-04-13 | Fujifilm Corporation | Optical disc |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2735282B2 (en) | 1998-04-02 |
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