WO2001031647A1 - Procede et dispositif pour secher des disques servant de support de donnees - Google Patents

Procede et dispositif pour secher des disques servant de support de donnees Download PDF

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Publication number
WO2001031647A1
WO2001031647A1 PCT/DE2000/003706 DE0003706W WO0131647A1 WO 2001031647 A1 WO2001031647 A1 WO 2001031647A1 DE 0003706 W DE0003706 W DE 0003706W WO 0131647 A1 WO0131647 A1 WO 0131647A1
Authority
WO
WIPO (PCT)
Prior art keywords
drying
data carrier
chamber
vacuum
dye
Prior art date
Application number
PCT/DE2000/003706
Other languages
German (de)
English (en)
Inventor
Thomas Glomb
Original Assignee
Data Disc Robots 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
Priority claimed from DE2000107065 external-priority patent/DE10007065A1/de
Application filed by Data Disc Robots Gmbh filed Critical Data Disc Robots Gmbh
Priority to AU18501/01A priority Critical patent/AU1850101A/en
Priority to DE10083282T priority patent/DE10083282D2/de
Publication of WO2001031647A1 publication Critical patent/WO2001031647A1/fr

Links

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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F26B5/042—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum for drying articles or discrete batches of material in a continuous or semi-continuous operation, e.g. with locks or other air tight arrangements for charging/discharging

Definitions

  • the invention relates to a method for drying data carrier disks, in which a liquid dye is applied to a plastic disc and the dye is then dried.
  • the invention also relates to a device for drying data carrier disks.
  • a so-called dye is applied to a polycarbonate pane as a writable layer.
  • This dye is applied in the liquid phase and then distributed by a spinning process.
  • the dye is dried under the influence of heat at atmospheric pressure. In this drying process, the residual solvent content is extracted from the dye.
  • the pane is dried for about 20 minutes in a heated dryer at a temperature of about 80 ° C and clean room air of class 100.
  • This drying process is time and energy consuming and there are high costs for the generation of clean room air of class 100.
  • the invention is therefore based on the object of providing a generic method and a device for carrying out the method, which enable the most economical drying possible while maintaining the highest quality standards. This task is solved procedurally by drying the dye under negative pressure.
  • this method offers the advantage that considerable operating costs are saved, since a dryer with high energy consumption and the associated effort for the treatment of conditioned clean air can largely be dispensed with. Since the evaporation of solvent components takes place much faster than under atmospheric pressure, the cycle time for drying The process can be carried out in normal process times of the order of magnitude as they occur in metallization.
  • the vacuum drying method is fundamentally suitable for all optical data storage media in which the active storage layer consists of a medium applied in the liquid phase.
  • the dye is both dried and splintered in a vacuum chamber. If the drying is carried out in the same vacuum apparatus as the metallization, the manufacturing costs can be significantly reduced.
  • the reflection medium is applied using a vacuum coating process. In this step known as splintering, a layer - usually silver - is applied to the pane by sputtering a target in the plasma. Since the dyecoating and the sputtering are successive procedural steps, these steps can be carried out in a simple manner in a single device, in which the vacuum device can be used for both process steps.
  • the dye has a solvent, preferably diacetone alcohol.
  • Diacetone alcohol evaporates at an ambient temperature of 20 ° C at a pressure of 2 mbar. If the pressure in the vacuum chamber is reduced below this value, the solvent evaporates in seconds without external heat.
  • heat and vacuum can also be combined in the method according to the invention in order to provide the optimal process parameters for the respective application.
  • the object on which the invention is based is achieved with a chamber which has at least one vacuum lock and a vacuum pump in order to generate a negative pressure in the chamber.
  • This simple device enables fast, inexpensive drying of data carrier disks.
  • the device preferably has a vacuum measuring device. It is also proposed to provide a pressure control valve.
  • a data carrier transport device can be installed in this device in order to convey the data carrier disks into and out of the device.
  • a sputtering device is advantageously arranged in the chamber. This makes it possible to use the vacuum device for both the drying and the sputtering process.
  • Figure 1 is a schematic representation of an apparatus for drying data carrier disks
  • Figure 2 shows a device according to Figure 1 with a sputtering device.
  • the device 1 shown in FIG. 1 essentially consists of a chamber 2 sealed against atmospheric pressure.
  • This chamber 2 has an inlet side 3 in its longitudinal extension, on which a first vacuum lock 4 is provided and a second vacuum lock 6 on its outlet side 5.
  • a conveyor device 7 allows disk plates 8 to be moved through chamber 2 in the direction of arrows 9 and 10.
  • a vacuum pump 1 1 evacuates the chamber 2 to a pressure below the vapor pressure of the solvent used in each case of the dye layer applied to the data carrier 8.
  • the working pressure is kept constant via the pressure control valve 12 arranged on the chamber 2 and the desired pressure is set with the aid of the vacuum measuring device 13.
  • FIG. 2 A device for vacuum drying and metallizing is shown in Figure 2.
  • This device 20 consists of a drying zone 21 and a sputtering zone 22. Both zones have their own vacuum pumps 23 and 24 and a partition 25 is provided between the zones in order to prevent mutual influences of the work carried out in the zones. To minimize operations.
  • the remaining structure corresponds to the device shown in Figure 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

L'invention concerne un procédé pour sécher des disques (8) servant de support de données, procédé selon lequel un colorant liquide est appliqué sur un disque de matière plastique avant d'être séché sous vide. Le séchage est ainsi rapide et économique sur le plan énergétique, sans toutefois affecter la qualité des disques ainsi produits, servant de support de données. L'invention concerne également un dispositif (1) pour mettre en oeuvre ledit procédé. Ce dispositif comprend une chambre (2), qui présente au moins un sas sous vide (4, 6), ainsi qu'une pompe à vide (11) pour faire le vide dans la chambre (3). De préférence, un séchage et une pulvérisation cathodique sont réalisés dans ladite chambre.
PCT/DE2000/003706 1999-10-22 2000-10-20 Procede et dispositif pour secher des disques servant de support de donnees WO2001031647A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU18501/01A AU1850101A (en) 1999-10-22 2000-10-20 Method and device for drying data carrier plates
DE10083282T DE10083282D2 (de) 1999-10-22 2000-10-20 Verfahren und Vorrichtung zum Trocknen von Datenträgerplatten

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19950971 1999-10-22
DE19950971.9 1999-10-22
DE10007065.5 2000-02-16
DE2000107065 DE10007065A1 (de) 2000-02-16 2000-02-16 Verfahren und Vorrichtung zum Trocknen von Datenträgerplatten

Publications (1)

Publication Number Publication Date
WO2001031647A1 true WO2001031647A1 (fr) 2001-05-03

Family

ID=26004370

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/003706 WO2001031647A1 (fr) 1999-10-22 2000-10-20 Procede et dispositif pour secher des disques servant de support de donnees

Country Status (3)

Country Link
AU (1) AU1850101A (fr)
DE (1) DE10083282D2 (fr)
WO (1) WO2001031647A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59172174A (ja) * 1983-03-18 1984-09-28 Matsushita Electric Ind Co Ltd デイジタル信号記録再生デイスクの製造方法
JPS59172173A (ja) * 1983-03-18 1984-09-28 Matsushita Electric Ind Co Ltd ディジタル信号記録再生ディスクの製造方法
EP0548746A1 (fr) * 1991-12-26 1993-06-30 Nikku Industry Co., Ltd. Dispositif de séchage sous vide
US5232505A (en) * 1991-08-19 1993-08-03 Leybold Aktiengesellschaft Apparatus for the automatic casting, coating, varnishing, testing and sorting of workpieces
GB2272225A (en) * 1992-10-06 1994-05-11 Balzers Hochvakuum Masking a workpiece and a vacuum treatment masking facility
EP0927995A1 (fr) * 1997-03-31 1999-07-07 Matsushita Electric Industrial Co., Ltd. Support d'enregistrement optique et son procede de fabrication

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59172174A (ja) * 1983-03-18 1984-09-28 Matsushita Electric Ind Co Ltd デイジタル信号記録再生デイスクの製造方法
JPS59172173A (ja) * 1983-03-18 1984-09-28 Matsushita Electric Ind Co Ltd ディジタル信号記録再生ディスクの製造方法
US5232505A (en) * 1991-08-19 1993-08-03 Leybold Aktiengesellschaft Apparatus for the automatic casting, coating, varnishing, testing and sorting of workpieces
EP0548746A1 (fr) * 1991-12-26 1993-06-30 Nikku Industry Co., Ltd. Dispositif de séchage sous vide
GB2272225A (en) * 1992-10-06 1994-05-11 Balzers Hochvakuum Masking a workpiece and a vacuum treatment masking facility
EP0927995A1 (fr) * 1997-03-31 1999-07-07 Matsushita Electric Industrial Co., Ltd. Support d'enregistrement optique et son procede de fabrication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 030 (P - 333) 8 February 1985 (1985-02-08) *

Also Published As

Publication number Publication date
DE10083282D2 (de) 2002-10-10
AU1850101A (en) 2001-05-08

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