JPH02172079A - Information recording medium with case - Google Patents
Information recording medium with caseInfo
- Publication number
- JPH02172079A JPH02172079A JP63325995A JP32599588A JPH02172079A JP H02172079 A JPH02172079 A JP H02172079A JP 63325995 A JP63325995 A JP 63325995A JP 32599588 A JP32599588 A JP 32599588A JP H02172079 A JPH02172079 A JP H02172079A
- Authority
- JP
- Japan
- Prior art keywords
- case
- recording medium
- information recording
- substrate
- medium
- 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.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000003287 optical effect Effects 0.000 description 18
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 235000003599 food sweetener Nutrition 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003765 sweetening agent Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はケース付きの情報記録媒体に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an information recording medium with a case.
一般に、光ディスクは、基板の上に設けた薄い記録層に
形成された光学的に検出可能な小さな（例えば、約１μ
ｍ）ピッ）１らせん状または円形のトラ、り形態にして
高密度情報を記憶することができる。In general, optical disks consist of optically detectable small (e.g., about 1 μm) formed in a thin recording layer on a substrate.
m) It can be configured in a spiral or circular configuration to store high-density information.
この様なディスクに情報を書込むには、レーデ感応層（
記録層）の表面に集束したレーデを走査し、このレーデ
光線が照射された表面のみがピット全形成し、このピッ
トをらせん状、又は円形状等のトラックの形態で形成す
る。レーデ感応層（記録層）は、レーデ・エネルギーを
吸収して光学的に検出可能なピット１−形成できる。例
えば、ヒートモード記録方式では、レーデ感応層（記録
層）は熱エネルギー全吸収し、その個所に蒸発または融
解によシ小さな凹部（ピット）全形成できる。また、別
のヒートモード記録方式では、照射されたレーデ・エネ
ルギーの吸収によシ、その個所に光学的に検出可能な濃
度差を有するピット全形成できる。To write information to such a disc, a Rede-sensitive layer (
A focused radar beam is scanned on the surface of the recording layer (recording layer), and pits are completely formed only on the surface irradiated with the radar beam, and these pits are formed in the form of a spiral or circular track. The Rade-sensitive layer (recording layer) can absorb Rade energy to form optically detectable pits. For example, in the heat mode recording method, the Lehde-sensitive layer (recording layer) absorbs all of the thermal energy and can form all the small pits at that location by evaporation or melting. In another heat mode recording method, by absorbing the irradiated Radhe energy, it is possible to form all the pits having an optically detectable density difference at that location.
この光ｆ”イスクに記録された情報は、レーデ光をトラ
ックに沿って走査し、ビットが形成された部分とビット
が形成されていない部分の光学的変化を読み取ることに
よって検出される。The information recorded on this optical f'' disk is detected by scanning the radar light along the track and reading the optical changes in the areas where bits are formed and the areas where no bits are formed.
この様な光ディスクでは、記録層をキズ、ゴミ等から保
護するため、少なくとも一方の面側に記録層が設けられ
た２枚の円板状基板を記録層が内側となるように貼シ合
せた構造を有している。また前述のようにピット全形成
することによシ情報の記録及び再生を行なう光ディスク
の場合、一般に記録層の記録感度全低下させないよう上
記２枚の円板状基板間が空間全形成するように貼シ合わ
せた、いわゆる中空構造を有している。In such optical discs, in order to protect the recording layer from scratches, dust, etc., two disk-shaped substrates each having a recording layer on at least one side are pasted together with the recording layer facing inside. It has a structure. In addition, in the case of an optical disc in which information is recorded and reproduced by forming all the pits as mentioned above, generally the space between the two disc-shaped substrates is formed completely so as not to reduce the recording sensitivity of the recording layer. It has a so-called hollow structure in which the sheets are pasted together.
またこの様な元ディスクは基板表面をキズ、ゴミ等から
保護するため、又記録層が基板を通過して光に露光され
ることによシ劣化するのを防ぐため第７図に示すように
ケース等に収納することが提案されている。尚、第７図
はケースの従来例を示す斜視図である。In addition, in order to protect the substrate surface from scratches, dust, etc., and to prevent the recording layer from deteriorating due to exposure to light passing through the substrate, such an original disk is coated with the following steps as shown in Figure 7. It is proposed to store it in a case or the like. Incidentally, FIG. 7 is a perspective view showing a conventional example of the case.
しかしながら上記従来例ではケースが光デイスク面に対
して略対称な構成となっているために、ケースを含む情
報記録媒体としての全体の厚みが元ディスク自体の厚み
に対し非常に大きなものとなっていた。そのため媒体の
輸送、保管に必要以上のスペースｔ−要し、又携帯にも
不便であるという問題点金有していた。又媒体の記録再
生を行なう装置ｔ全十分に薄くすることができないとい
う問題点も有していた。However, in the conventional example described above, since the case has a structure that is approximately symmetrical with respect to the optical disk surface, the overall thickness of the information recording medium, including the case, is much larger than the thickness of the original disk itself. Ta. Therefore, there are problems in that more space than necessary is required for transporting and storing the media, and it is also inconvenient to carry. Another problem is that the entire device for recording and reproducing the medium cannot be made sufficiently thin.
本発明は上述従来技術の問題点に鑑みなされたものでア
シ、その目的はケース付きの情報記録媒体の厚みを情報
記録媒体の厚みとほぼ等しくシ。The present invention has been made in view of the problems of the prior art described above, and its purpose is to make the thickness of an information recording medium with a case almost equal to the thickness of the information recording medium.
輸送、保管、携帯等に便利な薄塩のケース付き情報記録
媒体を提供することにある。To provide an information recording medium with a thin case convenient for transportation, storage, carrying, etc.
上記目的は本発明によれば、記録層の形成された基板と
裏基板とが該記録層が内側となるように定着されて成る
情報記録媒体が、該情報記録媒体の裏基板以外の部分を
覆うケースに収容されておシ、且つ前記裏基板が元を遮
断する材質で形成されていることを特徴とする、ケース
付き情報記録媒体によって達成される。According to the present invention, the above object is achieved by providing an information recording medium in which a substrate on which a recording layer is formed and a back substrate are fixed so that the recording layer is on the inside; This is achieved by an information recording medium with a case, which is housed in a covering case, and the back substrate is made of a material that blocks the source.
上述の如き手段によれば、裏基板がケースの役割を兼ね
た構成となっているために、ケースを含む情報記録媒体
の厚みを該情報記録媒体の厚みとほぼ等しくすることが
でき、輸送、保管、携帯等に便利な薄型の情報記録媒体
を得ることができる。According to the above-mentioned means, since the back substrate is configured to also serve as a case, the thickness of the information recording medium including the case can be made almost equal to the thickness of the information recording medium, and transportation, A thin information recording medium that is convenient for storage, carrying, etc. can be obtained.
本発明によれば、記録層の形成され九基板はケースによ
シゴミ、傷等から保護されておシ、′！た裏基板及びケ
ースが記録レーデ光の波長の光を遮断するために露光さ
れることによって記録層が劣化することもない。According to the present invention, the substrate on which the recording layer is formed is protected from dirt, scratches, etc. by the case. The recording layer does not deteriorate due to exposure of the back substrate and the case to block light having the wavelength of the recording radar light.
本発明において、裏基板に使用される材質は特に限定さ
れないが、記録レーデ光波長である７８０ｎｍあるいは
８３０ ｎｍの赤外光吸収材を含むゲラステ、り等が適
当である。可視光、紫外光も又遮断するものであればよ
シ好ましい。又裏基板としては記録層の形成された基板
と吸収率及び熱膨張率が略等しいものを選択するのが望
ましい。In the present invention, the material used for the back substrate is not particularly limited, but gelatin, phosphor, or the like containing an infrared light absorbing material at the recording wavelength of 780 nm or 830 nm is suitable. It is preferable if it also blocks visible light and ultraviolet light. Further, as the back substrate, it is desirable to select a substrate having substantially the same absorption coefficient and coefficient of thermal expansion as the substrate on which the recording layer is formed.
本発明によれば、裏基板の厚み金薄くすることなく薄型
のディスク媒体が得られるので、中空構造のディスクの
場合においても、ディスクの機械的強度が損なわれるこ
とがない。According to the present invention, a thin disk medium can be obtained without reducing the thickness of the back substrate, so even in the case of a disk having a hollow structure, the mechanical strength of the disk is not impaired.
以下、具体的な実施例をあげ１本発明の詳細な説明する
。Hereinafter, the present invention will be explained in detail by giving specific examples.
（５Ｉ！施例１）
第１図は本発明の冥施例を示す分解斜視図である。尚、
以下の説明では情報記録媒体として光ディスクを例にと
シ、説明する。図において、ｌは元ディスクでおる。２
はケースである。(5I! Example 1) FIG. 1 is an exploded perspective view showing a further example of the present invention. still,
In the following explanation, an optical disk will be used as an example of the information recording medium. In the figure, l is the original disk. 2
is the case.
第２図は元ディスクｌ’ｔ−ケース２に収容したときの
状態金示す斜視図である。又、第３図は第２囚０Ａ−Ａ
線における断面図を示したものでおる。FIG. 2 is a perspective view showing the state of the original disk when it is housed in the case 2. Also, Figure 3 shows the second prisoner 0A-A.
This is a cross-sectional view along the line.
光ディスクｌは、内径１．５ ｙｓ、外径８６ｒｔｔｓ
、厚さ１．２咽のポリカーダネート射出成形基板１１の
グループ面上に下式で示されるポリメチン系染料を溶剤
を用いてスピンコードして記録層１２を形成した後、厚
さ０．３ ｍｇのスイーサー１３を介して裏基板１４と
貼υ合わせることによシ作裏した。The optical disc l has an inner diameter of 1.5 ys and an outer diameter of 86 rtts.
A recording layer 12 is formed by spin-coding a polymethine dye represented by the following formula using a solvent on the group surface of a polycarbonate injection molded substrate 11 having a thickness of 1.2 mm, and then forming a recording layer 12 with a thickness of 0.3 mm. The fabrication was carried out by bonding the film to the back substrate 14 via a 100-mg sweetener 13.
裏基板１４には内径１５ｍｍ５外径８６ｆｌ、厚さ１．
２ｆｌに加工したＡＢＳ樹脂（商品名スタイラック１９
０Ｆ、旭化成（株）製）を用いた。裏基板１４の記録レ
ーザー光波長８３０ｎｍＫおける透過率は０％であった
。The back substrate 14 has an inner diameter of 15 mm, an outer diameter of 86 fl, and a thickness of 1.
ABS resin processed into 2 fl (product name: Stylec 19)
0F, manufactured by Asahi Kasei Co., Ltd.) was used. The transmittance of the back substrate 14 at the recording laser beam wavelength of 830 nmK was 0%.
ケース２の側面の内側には、溝２４が設けられておシ、
光ディスク１は溝２４に収納され、基板１１とケース２
との間は空隙２５を形成するようになっている。A groove 24 is provided on the inside of the side surface of the case 2.
The optical disc 1 is stored in the groove 24, and the substrate 11 and the case 2
A gap 25 is formed between them.
第４図は本発明によるケース付き情報記録媒体（光ディ
スク）ｔ−記録再生装置にローディングするときの断面
図である。FIG. 4 is a sectional view of an information recording medium (optical disc) with a case according to the present invention when it is loaded into a T-recording/reproducing apparatus.
ケース２にはシャッター２１が設けられておシ。The case 2 is provided with a shutter 21.
シャッター２１は係止ロック２３（第１図に囚も）によ
シロツクされている。光ディスク１を記録再生装置に挿
入する際には係止レバー２２（第１図に図示。）の一端
を押すことによブロックを解除してシャッター２１金開
け、ディスクの中心穴に金具等（図示せず）をかけ、デ
ィスクの先端をケースより引出した後、送夛ローラ２７
を用いて、光ディスク１′ｔ−装置２６内にローディン
グすることができる。光ｆイスク１を装置２６から取シ
出す際には、同様に送シローラ２７を用いて光ディスク
１ｔ−ケース２内の溝２４に収納した後シャッター２１
ｉもどすと、係止口、り２３によシ、シャ、ター２１は
自動的に口、りされる。そして更に、ケース２を不図示
の手段で引き出すことによシ、装置２６から光ディスク
ｌを取シ出すことができる。The shutter 21 is locked by a lock 23 (also shown in FIG. 1). When inserting the optical disc 1 into a recording/reproducing device, press one end of the locking lever 22 (shown in Figure 1) to release the block, open the shutter 21, and insert a metal fitting (see Figure 1) into the center hole of the disc. (not shown) and pull out the tip of the disc from the case, then move the feeding roller 27
can be used to load the optical disc 1't into the device 26. When taking out the optical disc 1 from the device 26, similarly, using the feed roller 27, the optical disc 1t is stored in the groove 24 in the case 2, and then the shutter 21
When it is returned, the locking opening 23 automatically closes the shutter 21. Furthermore, by pulling out the case 2 by means not shown, the optical disc l can be taken out from the device 26.
（実施例２）
第５図及び第６図は本発明の他の実施例を示す分解斜視
図及び断面図である。(Embodiment 2) FIGS. 5 and 6 are an exploded perspective view and a sectional view showing another embodiment of the present invention.
光ディスク１は実施例１と同様にして作製したが、裏基
板１４として、内径１５ ｔｍ ＊外径８旧帽厚さ１．
２鵡のサイズのものを用い、基板１１の外周部が突出す
るような構造になっている。The optical disc 1 was manufactured in the same manner as in Example 1, except that the back substrate 14 had an inner diameter of 15 tm * an outer diameter of 8 and a thickness of 1.
The substrate 11 has a structure in which the outer circumferential portion of the substrate 11 protrudes.
ケース２の側面の内側には溝２４が設けられておシ、元
ディスクｌは、上記基板１１の突出部１５によって溝２
４に保持され、基板１１とケース２との間は空隙２５を
形成するようになっている。A groove 24 is provided inside the side surface of the case 2, and the original disk l is inserted into the groove 24 by the projection 15 of the substrate 11.
4, and a gap 25 is formed between the substrate 11 and the case 2.
光ディスク１を記録再生装置に装填、又は取り出す場合
には、実施例１と同様にして行なうことができる・
〔発明の効果〕
以上本発明によれば、ケース込みの情報記録媒体の厚み
を約数間程度にすることが可能であシ、輸送、保管、携
帯等に便利で且つ自然光等に対して影響されることのな
い薄型のケース付き情報記録媒体を提供することができ
る。When loading or unloading the optical disc 1 into a recording/reproducing device, it can be carried out in the same manner as in Embodiment 1. [Effects of the Invention] According to the present invention, the thickness of the information recording medium including the case can be reduced by a divisor. It is possible to provide an information recording medium with a thin case, which is convenient for transportation, storage, portability, etc., and is not affected by natural light.
【図面の簡単な説明】
第１図は本発明の実施例を示す分解斜視図、第２図は元
ディスク全ケースに収容したときの状態を示す斜視図、
第３図は第２図０Ａ−Ａ巌における断面図、第４図は光
ディスクを記録再生装置にローディングするときの状態
を示す断面図、第５図及び第６図は本発明の他の実施例
を示す分解斜視図及び断面図、第７図は従来例を示す９
＋視図である。
１：光ディスク、２：ケース、１１：基板、１４：裏基
板、２１：シャッター ２４：溝。
代理人 弁理士 山 下 穣 平
第
図
第
図
第
図
第
図[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is a perspective view showing the state when all original disks are housed in the case,
FIG. 3 is a sectional view taken along the line 0A-A in FIG. An exploded perspective view and a sectional view showing the conventional example.
This is a + view. 1: Optical disc, 2: Case, 11: Board, 14: Back board, 21: Shutter, 24: Groove. Agent Patent Attorney Jo Taira Yamashita
Claims (2)
内側となるように定着されて成る情報記録媒体が、該情
報記録媒体の裏基板以外の部分を覆うケースに収容され
ており、且つ前記裏基板が光を遮断する材質で形成され
ていることを特徴とする、ケース付き情報記録媒体。(1) An information recording medium in which a substrate on which a recording layer is formed and a back substrate are fixed so that the recording layer is on the inside is housed in a case that covers parts of the information recording medium other than the back substrate. 1. An information recording medium with a case, characterized in that the back substrate is made of a material that blocks light.
れていることを特徴とする、特許請求の範囲第（１）項
記載のケース付き情報記録媒体。(2) The information recording medium with a case according to claim (1), wherein the information recording medium is removable from the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63325995A JPH02172079A (en) | 1988-12-26 | 1988-12-26 | Information recording medium with case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63325995A JPH02172079A (en) | 1988-12-26 | 1988-12-26 | Information recording medium with case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02172079A true JPH02172079A (en) | 1990-07-03 |
Family
ID=18182926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63325995A Pending JPH02172079A (en) | 1988-12-26 | 1988-12-26 | Information recording medium with case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02172079A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998038641A1 (en) * | 1997-02-28 | 1998-09-03 | Sony Corporation | Disk cartridge, door opening and closing mechanism and disk drive |
| EP0797195A3 (en) * | 1996-03-21 | 2001-04-11 | Sony Corporation | Optical disc and disc cartridge |
-
1988
- 1988-12-26 JP JP63325995A patent/JPH02172079A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0797195A3 (en) * | 1996-03-21 | 2001-04-11 | Sony Corporation | Optical disc and disc cartridge |
| EP1610315A2 (en) | 1996-03-21 | 2005-12-28 | Sony Corporation | Optical disc and disc cartridge |
| EP1610315A3 (en) * | 1996-03-21 | 2008-05-28 | Sony Corporation | Optical disc and disc cartridge |
| WO1998038641A1 (en) * | 1997-02-28 | 1998-09-03 | Sony Corporation | Disk cartridge, door opening and closing mechanism and disk drive |
| US6421204B1 (en) * | 1997-02-28 | 2002-07-16 | Sony Corporation | Disk cartridge, door opening and closing mechanism and disk drive |
| US6480354B2 (en) | 1997-02-28 | 2002-11-12 | Sony Corporation | Disk cartridge, its door opening and closing mechanism and disk drive |
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