DE2653831A1 - Thermoplastics video disc with high information storage density - in which information layer is bonded to dimensionally stable, plane parallel, carrier disc - Google Patents

Thermoplastics video disc with high information storage density - in which information layer is bonded to dimensionally stable, plane parallel, carrier disc

Info

Publication number
DE2653831A1
DE2653831A1 DE19762653831 DE2653831A DE2653831A1 DE 2653831 A1 DE2653831 A1 DE 2653831A1 DE 19762653831 DE19762653831 DE 19762653831 DE 2653831 A DE2653831 A DE 2653831A DE 2653831 A1 DE2653831 A1 DE 2653831A1
Authority
DE
Germany
Prior art keywords
layer
information
carrier
metal foil
disc
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
Application number
DE19762653831
Other languages
German (de)
Other versions
DE2653831C2 (en
Inventor
Wolfgang Dipl Ing Immelmann
Heinrich Ing Grad Reinmueller
Klaus Dipl Phys Schmitz
Adelbert Dipl Phys Dr Zielasek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polygram GmbH
Original Assignee
Polygram GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Polygram GmbH filed Critical Polygram GmbH
Priority to DE19762653831 priority Critical patent/DE2653831C2/en
Publication of DE2653831A1 publication Critical patent/DE2653831A1/en
Application granted granted Critical
Publication of DE2653831C2 publication Critical patent/DE2653831C2/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

Optically readable image or video signals are stored in the form of surface structures in a radiation-reflecting information layer. The layer is adhesively bonded to a carrier disc which is dimensionally stable, plane parallel, and has measurements appropriate to those of the information layer. A thin, elastic, interlayer is pref. provided between adhesive and information layers. The material carrying the surface structures is a metal foil which is coated, at least on that side furthest from the carrier plate, with a transparent, protective, varnish layer. The side nearest the carrier disc is coated with an opaque varnish layer and the foil is bonded to the carrier disc by application of pressure and/or an adhesive. The carrier disc is pref. made of a duroplast or a metal, e.g. Al.

Description

Plattenförmiger InformationsträgerDisc-shaped information carrier

Die Erfindung bezieht sich auf einen plattenförmigen Informationsträger hoher Speicherdichte für vorzugsweise optisch auslesbare Bild- bzw. Videosignale, die in Form von Oberflächenstrukturen in einer strahlungsreflektierenden Informationsschicht eingespeichert sind.The invention relates to a disc-shaped information carrier high storage density for preferably optically readable image or video signals, those in the form of surface structures in a radiation-reflecting information layer are stored.

Bei Informationsträgern für optisch auslesbare Signale, wie Bildplatten oder dergleichen, die ähnlich wie Schallplatten aus thermoplastischem Kunststoff hergestellt werden, tritt bei längerer Lagerung und/oder aufgrund unvermeidlicher Temperatureinflüsse eine derartige Veränderung der ursprünglichen exakt planen Form des Trägerkörpers ein, daß der bei der Wiedergabe verwendete optische Abtaststrahl an den durchgewölbten Bereichen des Trägerkörpers nicht mehr exakt in der Informationsebene fokussiert wird, so daß es zu entsprechenden Abtastfehlern kommt.In the case of information carriers for optically readable signals, such as optical disks or the like that are similar to thermoplastic vinyl records produced occurs with prolonged storage and / or due to inevitable Temperature influences such a change in the original precisely planar shape of the carrier body that the optical scanning beam used in the reproduction in the arched areas of the support body no longer exactly in the information plane is focused, so that it comes to corresponding scanning errors.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einn Informationsträger für optisch abtastbare Signale in der Weise auszubilden, daß sich auch bei längerer Lagerzeit keinedie optische Abtastung beeinträchtigende Formänderung hinsichtlich der Planlage des Trägerkörpers ergibt.The present invention is therefore based on the object einn To train information carriers for optically scannable signals in such a way that there is no change in shape that would impair optical scanning, even after a long period of storage results in terms of the flatness of the support body.

Ausgehend von einem Informationsträger der eingangs genannten Art wird diese Aufgabe erfindungsgemäß in der Weise gelöst, daß die Informationsschicht mit einer ihren Abmessungen angepaßten formstabilen undplanparallelen Trägerscheibe verbunden ist.Based on an information carrier of the type mentioned at the beginning will this object is achieved according to the invention in such a way that the information layer with a dimensionally stable and plane-parallel carrier disk adapted to its dimensions connected is.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgedankens sind den Merkmalen der Unteransprüche entnehmbar. Im besonderen gilt dies für eine Ausführungsform, bei der sich die Verwendung einer formstabilen Trägerplatte insofern vorteilhaft auswirkt, als dadurch die herstellung des eigentlichen Informationsträgers wesentlich vereinfacht werden kann. Bei dieser Ausführungsform besteht das di e Oberflächenstruktur tragende Material lediglich aus einer Metallfolie, die wenigstens an der der Trägerscheibe abgewandten Seite mit einer transparenten Schutzlackschicht versehen ist.Further advantageous embodiments of the inventive concept are can be found in the features of the subclaims. This applies in particular to an embodiment in which the use of a dimensionally stable carrier plate is advantageous has the effect of making the actual information carrier essential can be simplified. In this embodiment, this consists of the surface structure load-bearing material consists only of a metal foil, which is at least attached to the carrier disk opposite side is provided with a transparent protective lacquer layer.

Im folgenden wird die Erfindung anhand von in der Zeichnung dargestellten Äusführungsbei spielen näher erläutert.In the following the invention is illustrated with reference to in the drawing Äusführungsbei play explained in more detail.

Die Fig. 1 zeigt einen Informationsträger in schematischer Schnittdarstellung, dessen aus transparentem thermoplastischem Material gepreßte Informationsschicht 1 auf der Unterseite eine den eingespeictlert.en Si grlal en entsprechende Oberflächenstruktur aufweist.Fig. 1 shows an information carrier in a schematic sectional view, its information layer pressed from transparent thermoplastic material 1 on the underside a surface structure corresponding to the stored Si sizes having.

Diese Oberflächenstruktur ist mit einer dünnen Metallschicht 2 versehen, an der der von oben durch die transparente Schicht eiiifallende Abtaststraid A reflektiert wird. Ferner ist eine den Abmessungen dieser Informationsschicht 1 entsprechende formstabile Trägerscheibe 3 vorgesehen, die mit der Informationsschicht 1 verbunden ist und so dem gesamten Informationsträger eine steins plailparallele Lage verleiht. Zur Verbindung von Schicht 1 und Trägerscheibe 3 dient eine Kleberschicht 4. Zusätzlich kan zwischen Informationsschicht 1 und Kleberschicht 4 noch eine Zwischenschicht 5 aus Lack- oder Klebermaterial vorges1en n werden, die derai't beschaffen ist, daß sie auch in ausge härtetem Zustand bedingt elastisch bleibt und os eventuelle in der 1 Informationsschicht auftretende Zug- oder Druckspannungen elastisch auszugleichen vermag. Als Material für die formstabile Trägerscheibe 3 wird zvçeckm ißig ein Duroplast oder Metall, z.B.This surface structure is provided with a thin metal layer 2, on which the scanning trail A falling from above through the transparent layer is reflected will. Furthermore, one of the dimensions of this information layer 1 is appropriate dimensionally stable carrier disk 3 is provided, which is connected to the information layer 1 and thus gives the entire information carrier a stone-parallel position. An adhesive layer 4 is also used to connect layer 1 and carrier disk 3 An intermediate layer can be added between the information layer 1 and the adhesive layer 4 5 made of paint or adhesive material that is derai't made, that it remains conditionally elastic even in the hardened state and os eventual to elastically compensate for tensile or compressive stresses occurring in the 1 information layer able. A thermosetting plastic is used as the material for the dimensionally stable carrier disk 3 or metal, e.g.

Aluminium verwendet In Fig. 2 ist eine Ausführungsform für einen Informationsträger dargestellt, dessen eigentliche Informationsschicht in anderer Weise hergestellt ist. Diese Informationsschicht besteht aus einer Metallfolie 6, die eine den eingespeicherten Signalen entsprechende Oberflächenprägung aufweist und beidseitig mit einer Schutzlackschicht 7 bzw. 8 versehen ist. Die obere, bei der Wiedergabe den optischen Abtaststrahl A zugekehrte Schutzlackschicht 7 besteht dabei selbstverständlich aus transparentem Material, während für die zweite Schutzlackschicht 8 auch ein nicht transparenter Werkstoff verwendet werden kann. Zur Verbindung zwischen diesem aus Metallfolie 6 und den beiden Schutzlackschichten 7 und 8 gebildeten Trägerkörper und der formstabilen Trägerscheibe 9 dient wiederum eine Kleberschicht 10, wobei Trägerkörper und Trägerscheibe zusätzlich mittels äußerer Druckmittel aneinander gepreßt werden.Used aluminum In Fig. 2 is an embodiment shown for an information carrier, its actual information layer is made in a different way. This information layer consists of a metal foil 6, which has a surface embossing that corresponds to the stored signals and is provided with a protective lacquer layer 7 and 8 on both sides. The upper one, at the reproduction of the optical scanning beam A facing protective lacquer layer 7 consists Of course, made of transparent material, while for the second protective lacquer layer 8 a non-transparent material can also be used. To connect between this carrier body formed from metal foil 6 and the two protective lacquer layers 7 and 8 and the dimensionally stable carrier disk 9 is in turn used by an adhesive layer 10, wherein Carrier body and carrier disk additionally to one another by means of external pressure means be pressed.

Bei der in Fig. 3 dargestellten Ausführungsform besteht die Informationsschicht ebenfalls aus einer beidseitig beschichteten Metallfolie 11, wobei die obere, d.h. die dem Abtaststrahl A zugekehrte Lackschicht 12 wiederum aus transparentem Material besteht. Die Metallfolie 11 weist sowohl am Außenrand als auch im Bereich der zentralen Mittellochaussparung Je einen überstehenden Ringstreifen 13, 14 auf, der jeweils durch Umbiegen mit der Trägerscheibe 15 verbunden wird. Die Verbindung von Informationsschicht und Trägerscheibe erfolgt in einer Preßform, wobei die Trägerscheibe 15 ohne Klebematerial-unmittelbar an die untere Schutzlackschicht 16 angepreßt wird.In the embodiment shown in Fig. 3, there is the information layer also made of a metal foil 11 coated on both sides, the upper, i. the lacquer layer 12 facing the scanning beam A is again made of transparent material consists. The metal foil 11 has both on the outer edge and in the area of the central Center hole cutout One protruding ring strip 13, 14, each of which is connected to the carrier disk 15 by bending. The connection of information layer and carrier disk takes place in a compression mold, the carrier disk 15 directly without adhesive material is pressed against the lower protective lacquer layer 16.

7 Patentansprüche 3 figuren L e e r s e i t e7 claims 3 figures L e r s e i t e

Claims (7)

PatentanSprüche 1. Plattenförmiger, aus thermoplastischem Material bestehender Informationsträger hoher Speicherdichte für vorzugsweise optisch auslesbare Bild- bzw. Videosignale, die in Form von Oberflächenstrukturen in einer strahlungsreflektierenden Inforinationsschicht eingespeichert sind, d a d u r c h g e -k e n n z e i c h n e t , daß die Informationsschicht (i) mit einer ihren Abmessungen angepaßten formstabilen und planparallelen Trägerscheibe (3) verbunden ist. Patent claims 1. Plate-shaped, made of thermoplastic material existing information carrier of high storage density for preferably optically readable Image or video signals in the form of surface structures in a radiation-reflecting Information layer are stored, d u r c h e -k e n n n z e i c h n e t that the information layer (i) with a dimensionally stable one that is adapted to its dimensions and plane-parallel carrier disk (3) is connected. 2. Informationsträger nach Anspruch 1, d a d u r c h g e -k e n n z e i c h n e t , daß zur Verbindung von Informationsschicht (1) und Trägerscheibe (3) eine Kleberschicht (4) vorgesehen ist.2. Information carrier according to claim 1, d a d u r c h g e -k e n n z e i c h n e t that for the connection of information layer (1) and carrier disk (3) an adhesive layer (4) is provided. 3. Informationsträger nach Anspruch 2, <1 d a d u r c h g e -k e n n z e i c h n e t , daß zwischen Kleberschicht (4) und Informationsschicht eine dünne elastische Zwischenkleberschicht (5) vorgesehen ist.3. Information carrier according to claim 2, <1 d a d u r c h g e -k It is noted that between the adhesive layer (4) and the information layer there is a thin elastic intermediate adhesive layer (5) is provided. 4. Plattenförmiger Informationsträger, insbesondere nach einem der Ansprüche 1 bis 3, d a d u r ch g e k e n n z e i c hn e t , daß das die Oberflächenstruktur tragende Material aus einer Metallfolie (6) besteht, die wenigstens an der der Trägerscheibe abgewandten Seite mit einer transparenten Schutzlackschicht (7) versehen ist.4. Disc-shaped information carrier, in particular according to one of the Claims 1 to 3, d u r ch e k e n n n z e i c hn e t, that this is the surface structure supporting material consists of a metal foil (6), which is at least on the support disc remote side is provided with a transparent protective lacquer layer (7). 5. Informationsträger nach Anspruch 4, d a d u r c h g e -k e n n z e i c h n e t , daß die der Trägerscheibe zugekehrte 3eite der Metallfolie (6) mit einer nichtiransparenten Lackschicht (8) versehen ist.5. Information carrier according to claim 4, d a d u r c h g e -k e n n z e i c h n e t that the third side of the metal foil (6) facing the carrier disk is provided with a non-transparent lacquer layer (8). 6. Verfahren zur Herstellung eines Informationsträger nach Anspruch 4 oder 5, d a d u r c h g e k e n n z e i c h n e t daß die mit Lack beschichtete Metallfolie (6) mittels Druck und/oder mittels einer Kleberschicht mit der Trägerscheibe (9) verbunden wird.6. A method for producing an information carrier according to claim 4 or 5, denoting that the coated with varnish Metal foil (6) by means of pressure and / or by means of an adhesive layer with the carrier disk (9) is connected. 7. Verfahren nach Anspruch 6, d a d u r c h g e k e n n -z e i c h n e t , daß eine Metallfolie (11) mit einem am Außenrand und/oder an der zentralen Mittellochaussparung überstehenden Randstreifen (13, 14) verwendet wird und daß dieser Randstreifen durch Umbiegen mit der Trägerscheibe (15) verbunden wird.7. The method according to claim 6, d a d u r c h g e k e n n -z e i c h n e t that a metal foil (11) with one on the outer edge and / or on the central Center hole recess protruding edge strip (13, 14) is used and that this edge strip is connected to the carrier disk (15) by bending.
DE19762653831 1976-11-26 1976-11-26 Disc-shaped information carrier Expired DE2653831C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19762653831 DE2653831C2 (en) 1976-11-26 1976-11-26 Disc-shaped information carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762653831 DE2653831C2 (en) 1976-11-26 1976-11-26 Disc-shaped information carrier

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Publication Number Publication Date
DE2653831A1 true DE2653831A1 (en) 1978-06-01
DE2653831C2 DE2653831C2 (en) 1982-09-09

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010017A1 (en) * 1978-09-29 1980-04-16 Thomson-Csf Protected optical disk
DE3042101A1 (en) * 1979-11-07 1981-09-03 Hitachi, Ltd., Tokyo SUBSTRATE FOR RECORDING MEDIA AND METHOD FOR THE PRODUCTION THEREOF
EP0049821A1 (en) * 1980-10-09 1982-04-21 Kabushiki Kaisha Toshiba Data recording medium
EP0049813A1 (en) * 1980-10-09 1982-04-21 Kabushiki Kaisha Toshiba Data recording medium and manufacturing method therefor
DE3203599A1 (en) * 1981-02-05 1982-08-12 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa DATA RECORDING MATERIAL
EP0060846A1 (en) * 1980-09-22 1982-09-29 Minnesota Mining And Manufacturing Company Metallized information carrying discs
DE3246857A1 (en) * 1981-12-22 1983-07-07 Pioneer Electronic Corp., Tokyo OPTICAL PLATE
EP0306316A2 (en) * 1987-09-03 1989-03-08 Sony Corporation Methods of forming protective films on optical recording media
EP0729141A2 (en) * 1995-02-24 1996-08-28 Sony Corporation Optical recording medium and method of producing the same
EP1184858A2 (en) * 1995-01-27 2002-03-06 Nec Corporation Optical information recording medium and method for optical recording, reproducing and erasing information

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1281498B (en) * 1962-11-20 1968-10-31 Gen Electric Recording medium with a thermoplastic material
DE2026805A1 (en) * 1969-06-06 1970-12-10 Precision Instrument Company, Palo Alto, Calif. (V.St.A.) Recording medium and method for data recording by means of a laser beam
DE2341338A1 (en) * 1972-09-02 1974-03-07 Philips Nv RECORDING MEDIA ON WHICH DATA ARE APPLIED IN AN OPTICAL STRUCTURE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1281498B (en) * 1962-11-20 1968-10-31 Gen Electric Recording medium with a thermoplastic material
DE2026805A1 (en) * 1969-06-06 1970-12-10 Precision Instrument Company, Palo Alto, Calif. (V.St.A.) Recording medium and method for data recording by means of a laser beam
DE2341338A1 (en) * 1972-09-02 1974-03-07 Philips Nv RECORDING MEDIA ON WHICH DATA ARE APPLIED IN AN OPTICAL STRUCTURE

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437668A1 (en) * 1978-09-29 1980-04-25 Thomson Csf PROTECTED OPTICAL DISC
EP0010017A1 (en) * 1978-09-29 1980-04-16 Thomson-Csf Protected optical disk
DE3042101A1 (en) * 1979-11-07 1981-09-03 Hitachi, Ltd., Tokyo SUBSTRATE FOR RECORDING MEDIA AND METHOD FOR THE PRODUCTION THEREOF
EP0060846A1 (en) * 1980-09-22 1982-09-29 Minnesota Mining And Manufacturing Company Metallized information carrying discs
EP0060846A4 (en) * 1980-09-22 1983-04-06 Minnesota Mining & Mfg Metallized information carrying discs.
EP0049821A1 (en) * 1980-10-09 1982-04-21 Kabushiki Kaisha Toshiba Data recording medium
EP0049813A1 (en) * 1980-10-09 1982-04-21 Kabushiki Kaisha Toshiba Data recording medium and manufacturing method therefor
US4450452A (en) * 1981-02-05 1984-05-22 Tokyo Shibaura Denki Kabushiki Kaisha Data recording medium
DE3203599A1 (en) * 1981-02-05 1982-08-12 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa DATA RECORDING MATERIAL
DE3246857A1 (en) * 1981-12-22 1983-07-07 Pioneer Electronic Corp., Tokyo OPTICAL PLATE
EP0306316A2 (en) * 1987-09-03 1989-03-08 Sony Corporation Methods of forming protective films on optical recording media
US4931313A (en) * 1987-09-03 1990-06-05 Sony Corporation Method of forming a protective film for an optical recording medium
EP0306316A3 (en) * 1987-09-03 1990-09-26 Sony Corporation Methods of forming protective films on optical recording media
EP1184858A2 (en) * 1995-01-27 2002-03-06 Nec Corporation Optical information recording medium and method for optical recording, reproducing and erasing information
EP1184858A3 (en) * 1995-01-27 2002-05-29 Nec Corporation Optical information recording medium and method for optical recording, reproducing and erasing information
EP0729141A2 (en) * 1995-02-24 1996-08-28 Sony Corporation Optical recording medium and method of producing the same
EP0729141A3 (en) * 1995-02-24 1996-11-27 Sony Corp Optical recording medium and method of producing the same
US5846626A (en) * 1995-02-24 1998-12-08 Sony Corporation And Sony Disc Technology Inc. Optical recording medium and method of producing same
EP0992989A1 (en) * 1995-02-24 2000-04-12 Sony Corporation Method for producing an optical recording medium

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