EP1125291A1 - Support optique ameliore pour le stockage de donnees et son procede de fabrication - Google Patents
Support optique ameliore pour le stockage de donnees et son procede de fabricationInfo
- Publication number
- EP1125291A1 EP1125291A1 EP99946391A EP99946391A EP1125291A1 EP 1125291 A1 EP1125291 A1 EP 1125291A1 EP 99946391 A EP99946391 A EP 99946391A EP 99946391 A EP99946391 A EP 99946391A EP 1125291 A1 EP1125291 A1 EP 1125291A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- optical
- optical support
- central portion
- layer
- 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.)
- Withdrawn
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000008569 process Effects 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000013500 data storage Methods 0.000 title claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- 230000000284 resting effect Effects 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 45
- 239000004922 lacquer Substances 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 238000001746 injection moulding Methods 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 238000004528 spin coating Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
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- 150000002739 metals Chemical class 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 238000007639 printing Methods 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 239000011111 cardboard Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000011087 paperboard Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims description 2
- 238000004080 punching Methods 0.000 description 7
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- 230000000994 depressogenic effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- DOSMHBDKKKMIEF-UHFFFAOYSA-N 2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-[3-[3-[4-(1-methylindol-3-yl)-2,5-dioxopyrrol-3-yl]indol-1-yl]propylsulfamoyl]benzenesulfonate Chemical compound C1=CC(=[N+](CC)CC)C=C2OC3=CC(N(CC)CC)=CC=C3C(C=3C(=CC(=CC=3)S(=O)(=O)NCCCN3C4=CC=CC=C4C(C=4C(NC(=O)C=4C=4C5=CC=CC=C5N(C)C=4)=O)=C3)S([O-])(=O)=O)=C21 DOSMHBDKKKMIEF-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
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- 229920000515 polycarbonate Polymers 0.000 description 1
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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
- G06K19/04—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the shape
- G06K19/041—Constructional details
- G06K19/042—Constructional details the record carrier having a form factor of a credit card and including a small sized disc, e.g. a CD or DVD
- G06K19/044—Constructional details the record carrier having a form factor of a credit card and including a small sized disc, e.g. a CD or DVD comprising galvanic contacts for contacting an integrated circuit chip thereon
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
- G11B17/05—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs not contained within cartridges
- G11B17/053—Indirect insertion, i.e. with external loading means
- G11B17/056—Indirect insertion, i.e. with external loading means with sliding loading means
-
- 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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0033—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with cards or other card-like flat carriers, e.g. flat sheets of optical film
-
- 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
- G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates
Definitions
- the present invention concerns an improved optical support for data storage and, in particular, a support having a profile which differs from the conventional circular profile.
- the invention also concerns a preferred process to produce said optical support.
- the invention concerns an optical support having a substantially rectangular profile, equipped with devices apt to allow a fast and reliable centering thereof in a reader for conventional circular-type optical supports, and also provided with means to protect the reading side.
- CD Compact Disks
- CD-ROM Read-Only-Memory
- CD-R Writable
- CD-RW Re-Writable
- CD-RW Re-Writable
- a new typology of "CD” is moreover spreading, characterized by a data storage capacity considerably higher than the present one, namely the so-called Digital Versatile Disks (DVD) wherein the optically active surface, besides containing a far larger quantity of data - up to about 5 Gb - can be extended to several superposed layers.
- DVD Digital Versatile Disks
- DVD are present on the market not only in the Read-Only-Memory format, but also in the formats already cited for Compact Disks, namely the Writable (DVD-R) and Re-Writable (DVD-RW) formats, as well as in a Random Access Memory (RAM) format.
- DVD-R Writable
- DVD-RW Re-Writable
- RAM Random Access Memory
- the conventional circular CD with an axial hole are read and/or written by specific devices equipped with mechanisms, apt to cause the rotation of the CD by interacting with the axial hole thereof, as well as with optical means.
- the housings of such devices, into which are fitted the CD are circular and of dimensions equal to those of the CD meant to be housed therein.
- at least two concentric seats are provided at present into such housings, said seats corresponding to the standard dimensions of the two CD typologies now on the market, having a diameter of 80 mm and 1 20 mm respectively.
- optical supports for data storage having a profile other than the circular profile have been conceived and spread on the market, such supports being however still provided with a hole to interact with the rotation mechanisms of the common reading and/or writing devices.
- optical supports can be either irregular, for aesthetic purposes, or regular, for instance rectangular.
- Said supports with a non-circular profile, usually smaller than the conventional CD, can be more easily carried around as they take up less space, and they can be suitably used for a fast and frequent search of information, as for example in the case of electronic visiting cards.
- the data to be stored is inserted into a circular area concentric to the hole provided in the support and inscribed in the actual support; it is thereby possible to record onto a very small support - easy to handle and comfortably fitted into the document holders already present on the market - a very considerable amount of data.
- the supports with a non-circular profile have a serious drawback when being fitted into the appropriate housings of the optical reading and/or writing devices.
- the seats of the housings for the optical supports are circular, it is not easy - to start with - to position said supports in a manner such as to cause their hole to exactly correspond to the pin of the rotation mechanisms, and - secondly - while the housing performs its closing movement, the supports can easily move out of position.
- the hole of the supports is not properly aligned with the rotation mechanisms, besides making it impossible to carry out the reading and/or writing, it can cause damages to the support, or the latter may in turn damage the reading and/or writing device. Said drawback obviously also occurs in the case of circular supports having a non-standard diameter,
- the maximum height of the reliefs apt to be obtained with a punching process is too low to guarantee an easy and reliable centering of the support; on the other hand, the height of such reliefs is limited by the fact that the overall thickness of the support must be kept within a very definite and restricted range in order to comply with the specifications of the reading and/or writing devices; moreover, the punching process makes the support very fragile in correspondence of the punching areas, thereby determining cracks and flaws which then shortly lead to breakage of the support.
- a first object of the present invention is to hence allow obtaining, in a simple and reliable manner, a perfect positioning of the optical supports for data storage, having a non-standard shape, into the standard circular seats of the optical reading and/or writing devices existing on the market, without giving rise to any of the drawbacks cited heretofore in respect of the known type supports and thus, in particular, without creating any serious conditioning problems in designing the profile of the support and without determining any damages in the physical characteristics of said supports.
- a second object of the present invention is to therefore supply - in a simple, economic and reliable manner - an optical support for data storage, efficiently protected against wear on the readable and/or writable side.
- the present invention also concerns an improved process to produce optical supports having a non-circular profile.
- the known processes to produce the conventional circular optical supports include the following working steps:
- All the aforespecified layers are applied only on one side of the disk, and precisely the non-readable side, while the opposite side - namely, the readable side - undergoes no treatment.
- the application of the dye and of the protective lacquer can indifferently be carried out with a spin-coating process - in which the product is applied in liquid form at the centre of the disk, while said disk is caused to rotate at high speed so that the spreading of the product over its entire surface is obtained by centrifugal force - or with a more costly silk- screen process.
- the application of the metallic layers is instead obtained with a sputtering process, in which a cathode formed by the coating material is pulverized under vacuum and under the action of an electric field, to cover the anode consisting of the surface of the disk meant to be coated.
- the technologies adopted up-to-date have been of the substantially mechanical type, namely providing for the conventional production of an optical support of standard circular shape, followed by a mechanical machining thereof, normally by punching, to obtain the desired non-circular shape.
- This technology is however fully unsatisfactory for several reasons.
- a third object of the present invention is to thus supply a process for the production of optical supports having a non-circular profile, which does not involve the aforementioned drawbacks and, in particular, does not involve waste of materials and does not require mechanical machinings to form the support.
- Said optical support is obtained by means of a production process including the following working steps: a) - injection molding of the optical support into a mold having one or more impressions, the shape of which is identical to that of the finished support; b1 ) - in the case of CD-R or DVD-R, application of a dye layer, with removal of the dye in excess around the disk edge, on one side of the support; b2) - in the case of CD-RW, DVD-RW or DVD-RAM, application of a layer formed of several metals; c) - application of a reflecting metallic layer on the same side of the support; d) - application of a layer of protective lacquer on the same side of the support; d1 ) - possible application of a layer of protective lacquer on the other side of the support (reading side); d2) - removal of a thin layer of the support in correspondence of the edge, by means of a laser erosion technique; e) - label printing.
- the steps b1 ), d) and d 1 ), are carried out by means of a spin-coating process into a coating apparatus, whose rest plate for the optical support to be coated comprises at least one pair of deflection tabs fixed to the surface of the plate onto its portions not covered by the support.
- Fig. 1 is a perspective view of a first embodiment of the optical support according to the present invention
- Fig. 2 is a part section view of the support, on an enlarged scale, along the line A-A of fig. 1
- Fig. 3 is a perspective view of a second embodiment of the optical support according to the present invention
- Fig. 4 is a part section view of the support, on an enlarged scale, along the line B-B of fig. 3;
- Fig. 5 is an exploded perspective view of a third embodiment of the optical support according to the present invention.
- Fig. 6 is a part section view of the support, on an enlarged scale, along the line C-C of fig. 5;
- Fig. 7 is a diagrammatic perspective view of a device to apply a dye layer or a layer of protective lacquer on the optical support according to the present invention, by means of a spin-coating process;
- Fig. 8 is a section view, on an enlarged scale, along the line D-D of fig. 7.
- the support 1 comprises a substantially rectangular base 2, with a minor side Li and a major side L2, and an axial through hole 3.
- the rectangular base 2 has beveled edges.
- the optically active surface 4 of the support 1 is formed in relief in respect of the rectangular base 2 and it is shaped as a segment of a circle with two bases of height equal to Li , symmetric in respect of the hole 3 and having a diameter D equal to the diameter of one of the circular seats provided into the reading and/or writing devices, normally the smaller seat having a diameter of 80 mm.
- the major side L2 of the rectangular base 2 is thus wider than the diameter D of the surface 4.
- the central portion of the support 1 has a thickness Si which is greater than the thickness
- the thickness S2 may vary between 0,500 and 1 ,000 mm, and is preferably equal to 0,850 mm; while the thickness Si may vary between 1 , 100 and 1 ,300 mm, and is preferaby equal to 1 ,200 mm.
- the step 5 formed between the surface 4 in relief and the rectangular base 2 has right angles.
- the support 1 according to the present invention is apt to be easily inserted into the housings of the reading and/or writing devices.
- the surface 4 (shaped as a segment of a circle) can be easily and steadily positioned into one (the smallest one) of the circular seats provided in the housings of the reading and/or writing devices.
- the two opposite circular rims of the surface 4 are provided with ribs 6 having a section shaped as a right-angled triangle - as clearly shown in fig. 4 - so that one of the sides of said rib is perfectly aligned with the aforecited step 5.
- This solution thus allows the step 5 to reach an overall height which is far more considerable than in the first embodiment of the support, thereby allowing to obtain a much faster and steadier anchorage onto the circular seat provided into the housings of the reading and/or writing devices.
- the thickness of the rib 6 is preferably about 0,300 mm, whereby the step 5 - which, in the first embodiment of the support, was preferably 0,350 mm high - now reaches an almost double overall preferred height, namely corresponding to 0,750 mm.
- the rib 6 can be formed onto the surface 4 by any known system, for example it can be applied by glueing, or it can be formed by injection molding in one piece with the surface 4, this last production system being the one preferred.
- the preferred thickness of the rib 6 exactly corresponds to the thickness of the so-called stacker ring - namely the circular rib provided in all the CD close to their central hole (not shown on the drawings for simplicity) - which allows to stack the CD during production thereof, preventing their respective facing surfaces to get in full contact, which would create difficulties in the automatic handling thereof as well as possible damages to the same.
- the fact that the rib 6 and the stacker ring have the same thickness allows first of all to to keep the overall thickness of the support within the specification ranges, and to thus easily cause the rotation of the optical support according to the present invention into the standard reading and/or writing devices, which are in fact already prearranged to receive CD of said thickness.
- the base 2 of the support 1 having a substantially rectangular profile, is formed of a plastic material and comprises a depressed seat 7 having the same shape as a segment of a circle with two bases, already described for the surface 4 of the support 1 of the first and second embodiments, and being equally provided with an axial hole 3.
- an optically active layer 8 having exactly the same shape, as a segment of a circle, and also provided with an axial hole 9, so as to perfectly mate with the shape of the seat 7. Furthermore the step 10, formed in the base 2, and the corresponding rim 1 1 of the optically active layer 8 have both right angles, so that the final step formed by the coupling between said layer 8 and the base 2 is also at right angles and thereby allows to obtain a centering of the support 1 into the housings of the reading and/or writing devices, which is exactly like that obtained with the step 5 present in the first embodiment of the invention.
- the optically active layer 8 is formed by injection molding of a suitable plastic material, it can consist of a single layer or of more reciprocally glued layers, and it may of course perform any type of function according to the different types of CD or DVD; the overall thickness Si of said layer 8 varies between 0,950 and 1 , 1 50 mm, and is preferably equal to 1 ,050 mm.
- the base 2 can also be formed by injection molding of a suitable plastic material, or it can consist of another supporting material, as for example paper or cardboard; in this last case, said base 2 can be formed by pressing or die cutting.
- the peripheral portion of the base layer 2 has a thickness S2 which is greater than the thickness S 3 of the depressed seat 7.
- the thickness S2 may vary between 0,500 and 1 ,000 mm, and it is preferably equal to 0,850 mm; whereas, the thickness S3 may vary between 0, 100 and 0,300 mm, and it is preferably equal to 0, 1 50 mm.
- the optical support 1 of the third embodiment described heretofore can however also be realized with a modified shape, similar to that described for the second embodiment of the support according to the invention.
- a rib 6 (as shown in fig. 4) is formed onto the edge of the optically active layer 8 so that one side of said rib is aligned with the rim 1 1 , thereby obtaining - also in this case - a final step which is much higher and thus allows a faster and more reliable centering action.
- the optical support it is moreover provided to protect the reading and/or writing side of the CD, namely the surface of the optically active layer 4 or 8, with a further coating layer consisting of a protective lacquer, meant to preserve from scratches and abrasions said side of the support.
- a protective lacquer is an acrylic-based lacquer with UV polymerization and it is applied as a coating layer having a thickness between 3 and 10 ⁇ m.
- optical support according to the present invention is produced with an improved process which, starting from the standard steps of the process for producing the conventional CD, introduces some new steps which allow to make said process particularly effective for the production of optical supports having a non-circular profile; furthermore, it is fully exempt from the drawbacks cited heretofore in connection with the process adopted in known technique to produce such optical supports.
- the molding parameters are adjusted so that, in correspondence of each point of the molded support, the double refraction values of the reading surface of the support are below a limit value preset in the CD and DVD specifications supplied by Philips or Toshiba.
- optical supports having a non-circular profile, which are perfectly readable over the whole surface thereof and which can thus be used both with the conventional readers - apt to read on circular sectors positioned in sequence (that is, only into a circular concentric area inscribed in the support) - and with new types of readers, apt to read also on other areas of the support, as for example the orbital readers of the Patent Application WO-99/1 21 59.
- a second particularly innovative step - which has actually allowed to mold the optical support directly into the desired final shape, as described above - concerns the spin-coating process by which a dye layer, or a layer of protective lacquer, is applied onto the support.
- this coating technique which allows to obtain better technical results and involves lower costs than the silk-screen process - it is indispensable to use rotary machines wherein the plates, onto which the support is rested and centered, are necessarily of circular shape. Since the optical support to be coated does not have such a shape, during the spin-coating operation some of the dye substance inevitably drops onto the rest plate and ends up by staining the edges and the lower part of the optical support; this requires subsequent cleaning operations on the support, which determine increases in the production costs.
- the lack of radial symmetry of the optical support does not allow a uniform spreading of the coating substance.
- said problems are fully solved by carrying out the spin-coating process into an apparatus which has been modified as illustrated in fig. 7.
- the section of the tabs 14, shown in fig. 8, has a wedge-shaped configuration, with the inclined portion facing the direction of rotation of the plate 1 2.
- the tabs 14 are preferably fixed to the plate 12 in correspondence of the two long sides of the support 1 and, in any case, on opposite sides in respect of a diameter d of the plate 1 2, that is, slightly misaligned in respect of the center of said plate.
- the action of the tabs 14 positively influences the flow dynamics of the spin-coating process, in a manner such as to avoid any undesirable gathering of dye or lacquer in the areas not covered by the support 1 , and thus obtain a perfectly uniform coating thereof.
- a third innovative step finally concerns the cleaning operation carried out on the edge of the support to remove the layers deposited thereon.
- said treatment is carried out with a laser erosion technique which allows to remove, in correspondence of the support edge, a very thin layer of the plastic material forming the support, and obviously also the layers deposited thereon.
- the optical support 1 - or rather its base layer 2 - has a substantially rectangular profile and comprises a single optically active surface 4, or layer 8, shaped as a segment of a circle with two bases, of height equal to the minor side of the rectangular profile and having a diameter equal to the diameter of one of the circular seats provided into the standard housings of reading and/or writing devices.
- Different embodiments can however be conceived, to provide supports having profiles and shapes of the optically active surface differing from the ones illustrated, in order to adapt them to the specific requirements of special applications, without thereby departing from the protection scope of the present invention such as defined in the following claims.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITRM980244U | 1998-10-07 | ||
ITRM980242U | 1998-10-07 | ||
ITRM980243 IT245728Y1 (it) | 1998-10-07 | 1998-10-07 | Perfezionato supporto ottico di memorizzazione dati. |
IT000635 IT1302364B1 (it) | 1998-10-07 | 1998-10-07 | Procedimento per la produzione di supporti ottici sagomati per lamemorizzazione non volatile di dati |
ITRM980635 | 1998-10-07 | ||
ITRM980243U | 1998-10-07 | ||
ITRM980242 IT245727Y1 (it) | 1998-10-07 | 1998-10-07 | Perfezionato supporto ottico di memorizzazione dati. |
ITRM980244 IT245729Y1 (it) | 1998-10-07 | 1998-10-07 | Perfezionato supporto ottico di memorizzazione dati. |
PCT/IB1999/001642 WO2000021080A1 (fr) | 1998-10-07 | 1999-10-07 | Support optique ameliore pour le stockage de donnees et son procede de fabrication |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1125291A1 true EP1125291A1 (fr) | 2001-08-22 |
Family
ID=27453053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99946391A Withdrawn EP1125291A1 (fr) | 1998-10-07 | 1999-10-07 | Support optique ameliore pour le stockage de donnees et son procede de fabrication |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1125291A1 (fr) |
AU (1) | AU5879999A (fr) |
BG (1) | BG105410A (fr) |
CA (1) | CA2330861A1 (fr) |
HU (1) | HUP0103936A3 (fr) |
PL (1) | PL347160A1 (fr) |
WO (1) | WO2000021080A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1043684A1 (fr) | 1999-03-29 | 2000-10-11 | OMD Productions AG | Support d'informations |
EP1134735A1 (fr) * | 2000-03-14 | 2001-09-19 | Unidisc Technology Co., Ltd. | Carte de visite et son procédé de fabrication |
CH691679A5 (de) * | 2000-06-14 | 2001-09-14 | Al Askari Raad | Verpackung für optische Speicherplatten. |
US6939485B2 (en) * | 2001-10-30 | 2005-09-06 | Randy Kish | Method for shaping optical storage discs and products thereof |
FI119860B (fi) * | 2004-09-08 | 2009-04-15 | M Real Oyj | Paperi- ja kartonkiarkkien uudet käytöt |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR0185765B1 (ko) * | 1993-04-10 | 1999-04-15 | 가와다 미쓰구 | 광 정보매체와 그 제조방법 |
US5518788A (en) * | 1994-11-14 | 1996-05-21 | Minnesota Mining And Manufacturing Company | Antistatic hard coat incorporating a polymer comprising pendant fluorinated groups |
DE29708978U1 (de) * | 1997-05-22 | 1997-07-10 | Blaha, Frantisek, Ing., 91356 Kirchehrenbach | CD/DVD-Abspielhilfe |
CH688996C1 (de) * | 1997-06-25 | 2000-11-30 | Gerhard Fischer | Visitenkarte. |
US6016298A (en) * | 1997-06-25 | 2000-01-18 | Adivan High Tech Ag | Calling card |
DE29820749U1 (de) * | 1998-11-21 | 1999-02-25 | Ziggel, Carsten, 22085 Hamburg | CD-Visitenkarte |
-
1999
- 1999-10-07 EP EP99946391A patent/EP1125291A1/fr not_active Withdrawn
- 1999-10-07 HU HU0103936A patent/HUP0103936A3/hu unknown
- 1999-10-07 PL PL99347160A patent/PL347160A1/xx unknown
- 1999-10-07 WO PCT/IB1999/001642 patent/WO2000021080A1/fr not_active Application Discontinuation
- 1999-10-07 AU AU58799/99A patent/AU5879999A/en not_active Abandoned
- 1999-10-07 CA CA002330861A patent/CA2330861A1/fr not_active Abandoned
-
2001
- 2001-04-04 BG BG105410A patent/BG105410A/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO0021080A1 * |
Also Published As
Publication number | Publication date |
---|---|
PL347160A1 (en) | 2002-03-25 |
CA2330861A1 (fr) | 2000-04-13 |
HUP0103936A3 (en) | 2002-04-29 |
AU5879999A (en) | 2000-04-26 |
WO2000021080A1 (fr) | 2000-04-13 |
BG105410A (en) | 2001-12-29 |
HUP0103936A2 (hu) | 2002-03-28 |
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