JPS6083074A - Optical recording medium - Google Patents
Optical recording mediumInfo
- Publication number
- JPS6083074A JPS6083074A JP58190528A JP19052883A JPS6083074A JP S6083074 A JPS6083074 A JP S6083074A JP 58190528 A JP58190528 A JP 58190528A JP 19052883 A JP19052883 A JP 19052883A JP S6083074 A JPS6083074 A JP S6083074A
- Authority
- JP
- Japan
- Prior art keywords
- card
- diffraction
- unevenness
- recording medium
- optical recording
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
- G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
- G06K19/16—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being a hologram or diffraction grating
Abstract
Description
【発明の詳細な説明】
本発明は高分子材料のシート状物の表面に凹凸を形成し
て情報を記録する記録媒体、所謂しＩＪ −７構造の光
記録媒体に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording medium in which information is recorded by forming irregularities on the surface of a sheet-like material of a polymeric material, an optical recording medium having a so-called IJ-7 structure.
高分子材料のシート状物の表面に光の波長の大きさの凹
凸を形成して、これにより情報を記録する光記録媒体は
、コンパクトディスク、光学式ビテオディスク、ホログ
ラム利用のＩＤカード等にて列用化されている。この棟
の光記録媒体の欠点の１つは耐熱性が劣っていることで
あり、ｇＴＪ記凹凸は０．１μｍ程度であるので高温雰
囲気に少し曝すことＫＪ：つて凹凸が変形して記録情報
が失われてしまう。Optical recording media that record information by forming irregularities of the wavelength of light on the surface of a sheet of polymeric material include compact discs, optical video discs, ID cards using holograms, etc. It has been made into a column. One of the drawbacks of this type of optical recording medium is that it has poor heat resistance, and since the unevenness of gTJ is about 0.1 μm, it is necessary to expose it to a high temperature atmosphere for a while. It will be lost.
木発ＦＩＡはこのような欠点を解消するためになさｔし
たものであって、情報を記録した凹凸面上に、凹凸を形
成した高分子材料よりも熱変形温度の高い透光性材料の
被膜を形成することにより耐熱性を高めた光記録媒体を
提供することを目的とする。Wooden FIA was developed to eliminate these drawbacks, and it uses a film made of a transparent material that has a higher heat deformation temperature than the polymer material on which the unevenness is formed, on the uneven surface on which information is recorded. An object of the present invention is to provide an optical recording medium with improved heat resistance by forming a .
以下本発明をホログラムを記録したＩＤカードにおける
実施例を示す図面に基いて詳述する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to drawings showing an embodiment of an ID card having a hologram recorded thereon.
第１図は本発明に係るＩＤカードの全体を示す斜視図で
あり、ポリ塩化ビニール製の長方形のカード本体１の所
定部位［５つのホログラムの回折縞２，２・・・全印刷
技術にスタンプしである。各回折縞２，２・・・は簡単
な２次元のものであり、犬々のパターンに数を対応させ
である。この回折縞２，２・・・によって記録した情報
はこの部分に光 を投射し、これによって生じる一次回
折光の相対位置を光電変換素子等によって睨取らせる。FIG. 1 is a perspective view showing the entire ID card according to the present invention, in which predetermined portions of a rectangular card body 1 made of polyvinyl chloride [5 hologram diffraction stripes 2, 2... stamped on all printing techniques] FIG. It is. Each of the diffraction fringes 2, 2, . . . is a simple two-dimensional one, and the number corresponds to the pattern of the dogs. Information recorded by the diffraction fringes 2, 2, . . . projects light onto this portion, and the relative position of the resulting first-order diffracted light is observed by a photoelectric conversion element or the like.
第２図はカード本体１に形成された回折縞２の断面形状
を模式的に示しており、０．１μｍ程度の凹凸をなして
いる。然して本発明のカードにおいてはこのカード本体
１０表面の凹凸上に、第３図に示すようにカード本体ｌ
の素材であるポリ駐止ビニールよりも熱変形温度が高い
、しかも透り１な素材、例えばＳ ｉ０２の保護被膜３
を適当な厚さに形成しである。FIG. 2 schematically shows the cross-sectional shape of the diffraction fringes 2 formed on the card body 1, which have irregularities of about 0.1 μm. However, in the card of the present invention, as shown in FIG.
The protective coating 3 is made of a material that has a higher heat deformation temperature than the poly parking vinyl that is made of, and is transparent, such as S i02.
is formed to an appropriate thickness.
この被膜の材料としてはカード本体１等、凹凸にて情報
を記録すべきシート状物の素材の高分子材料よりも熱変
形温度が高いものであＶ−レかも透光性を有している必
要があり、具体的には…Ｊ記５ｉ０２の外に、ＭｇＦ２
＋ ５ｎｏ２ 、 ＩｎＯ３等が挙げられる。The material for this coating has a heat deformation temperature higher than that of the polymeric material of the sheet-like material on which information is to be recorded on uneven surfaces, such as the card body 1, and V-ray also has translucency. Specifically, in addition to J 5i02, MgF2
+5no2, InO3, and the like.
なお被膜３は完全な透明である必＠、はないが情報の角
生ＶＣ支障がない程度の透光性を有している必要があり
、またその厚さは透光性とカード本体１の凹凸の熱変形
に対する保護性能とのバランスを考慮して決定すれはよ
い。The coating 3 does not necessarily have to be completely transparent, but it must have enough translucency to avoid interfering with the VC of information, and its thickness must be determined based on the translucency and that of the card body 1. It is advisable to decide this by considering the balance with the protection performance against thermal deformation of the unevenness.
第４図は回」７７縞の耐熱強度を調べた実験結果を示す
グラフである。実験は各温度［３時同の間曝した後、常
温に戻して回折光強度を測定した。実線は本発明のカー
ド（被膜け５ｉＯｙ）の結果を示し、破線は従来のカー
ド（又は被膜３を形成していない本発明のカード本体ｌ
）の結果を示している。FIG. 4 is a graph showing the experimental results of examining the heat resistance strength of 77 stripes. In the experiment, the samples were exposed to each temperature for 3 times at the same time, and then returned to room temperature and the intensity of the diffracted light was measured. The solid line shows the results for the card of the present invention (with a coating of 5 iOy), and the broken line shows the results for the conventional card (or the card body of the present invention without coating 3).
) shows the results.
このグラフから明らかな如く、従来のカードでは４０℃
程度で劣化がはじまり、６０℃以上のところでは短時間
の保存にも耐えないのに対し、本発明のカードでは格段
に高い耐熱性を示す。この効果は被膜３がカード本体１
０質形を妨げることによって奏されるのは言うまでもな
い。As is clear from this graph, the temperature of the conventional card is 40°C.
In contrast, the card of the present invention shows significantly high heat resistance at temperatures above 60° C. and cannot withstand even short-term storage. This effect means that the coating 3 is the card body 1.
Needless to say, it is performed by interfering with the zero quality form.
このように本発明による場合は記録媒体の耐熱性を大幅
に向上できる外、情報の記録それ自体は従来同様に行え
るという効果もある。即ち、従来のカードの耐熱性を向
上する方法としてカード自体の素材に熱変形温度が高い
ものを使用することも考えられるが、熱変形温度が高い
ものは一般に情報の記録のための刻印が難しくなり、捷
たカードのシート材の積層、印刷等の加工技術も材料ご
とに区々に異り、カード自体の材料を変えることは相当
の困ｍを伴う。これに対して不発ｌ１ｌｌ１４による場
合は刻印、印刷を行うべきカード本体は従来のカードの
素材を用いるので上述の如き困難な点は皆無である。As described above, according to the present invention, not only the heat resistance of the recording medium can be greatly improved, but also the information recording itself can be performed in the same manner as before. In other words, one way to improve the heat resistance of conventional cards is to use a material with a high heat distortion temperature for the card itself, but materials with a high heat distortion temperature are generally difficult to engrave to record information. Processing techniques such as lamination and printing of sheet materials of shredded cards also differ depending on the material, and changing the material of the card itself is accompanied by considerable difficulty. On the other hand, in the case of failure l1ll14, the card body to be engraved and printed is made of a conventional card material, so there are no such difficulties as described above.
以上のように本発明に係る光記録媒体は、高分子材料よ
りなり、光学的に検出すべき情報を凹凸にて記録する光
記録媒体において、凹凸を形成した高分子材料の向上に
、該高分子材料より熱変形温度が高い透光性材料の被膜
を形成しであるものであるので、耐熱性が高く、情報の
記録出生を高（Ｓ傾度でイ」える光記録媒体が去現でき
る。As described above, the optical recording medium according to the present invention is made of a polymeric material and records information to be optically detected using unevenness. Since the coating is made of a light-transmitting material that has a higher thermal deformation temperature than a molecular material, an optical recording medium that has high heat resistance and can record information with a high S gradient can be created.
なお不発ｒｐ４はＦＪｉＪ述の夫施例の如きホログラム
を利用したＩＤカーＦに限らず、コンパクトティスフ等
、他の光記録媒体にも適用できることは６つまでもない
。It should be noted that the misfiring RP4 can be applied not only to the ID car F using a hologram such as the example described in FJiJ, but also to other optical recording media such as compact discs.
第１ＩＡＩ−１本発明のカードの刺視図、第２図はカー
ド本体の回折縞を示す模式図、第３図は被膜を形成した
状態を示す回折縞の模式図、第４図は本発明のカード及
び従来のカードの耐熱性を示すグラフである。1 IAI-1 A perspective view of the card of the present invention, FIG. 2 is a schematic diagram showing the diffraction fringes of the card body, FIG. 3 is a schematic diagram of the diffraction fringes showing the state in which a coating is formed, and FIG. 4 is a diagram of the present invention 2 is a graph showing the heat resistance of a conventional card and a conventional card.
Claims (1)
凸にて記録する光記録媒体において凹凸を形成した高分
子材料の面上に、該高分子材料より熱変形温度が高い透
光性材料の被膜を形成しであることを特徴とする光記録
媒体。1. In an optical recording medium that is made of a polymeric material and records information to be optically detected in the unevenness, a light-transmitting material with a heat distortion temperature higher than that of the polymeric material is placed on the surface of the polymeric material on which the unevenness is formed. An optical recording medium comprising a film formed of a material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58190528A JPS6083074A (en) | 1983-10-12 | 1983-10-12 | Optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58190528A JPS6083074A (en) | 1983-10-12 | 1983-10-12 | Optical recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6083074A true JPS6083074A (en) | 1985-05-11 |
Family
ID=16259587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58190528A Pending JPS6083074A (en) | 1983-10-12 | 1983-10-12 | Optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6083074A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5477347A (en) * | 1993-07-14 | 1995-12-19 | Tamarack Storage Devices | Method and apparatus for isolating data storage regions in a thin holographic storage media |
| US5504594A (en) * | 1991-11-20 | 1996-04-02 | Dai Nippon Printing Co., Ltd. | Hologram, article including hologram, and hologram recording and reconstructing methods |
| US5644412A (en) * | 1991-12-25 | 1997-07-01 | Dai Nippon Printing Co., Ltd. | Hologram and method of reading the same |
| US5900954A (en) * | 1992-06-01 | 1999-05-04 | Symbol Technologies, Inc. | Machine readable record carrier with hologram |
| US6092728A (en) * | 1992-03-30 | 2000-07-25 | Symbol Technologies, Inc. | Miniature laser diode focusing module using micro-optics |
-
1983
- 1983-10-12 JP JP58190528A patent/JPS6083074A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5504594A (en) * | 1991-11-20 | 1996-04-02 | Dai Nippon Printing Co., Ltd. | Hologram, article including hologram, and hologram recording and reconstructing methods |
| US5644412A (en) * | 1991-12-25 | 1997-07-01 | Dai Nippon Printing Co., Ltd. | Hologram and method of reading the same |
| US6092728A (en) * | 1992-03-30 | 2000-07-25 | Symbol Technologies, Inc. | Miniature laser diode focusing module using micro-optics |
| US5900954A (en) * | 1992-06-01 | 1999-05-04 | Symbol Technologies, Inc. | Machine readable record carrier with hologram |
| US5477347A (en) * | 1993-07-14 | 1995-12-19 | Tamarack Storage Devices | Method and apparatus for isolating data storage regions in a thin holographic storage media |
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