DE602005013057D1 - Optisches Aufzeichnungsmedium mit unterschiedlicher optischer Absorption der beiden Aufzeichnungsschichten - Google Patents

Optisches Aufzeichnungsmedium mit unterschiedlicher optischer Absorption der beiden Aufzeichnungsschichten

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Publication number
DE602005013057D1
DE602005013057D1 DE602005013057T DE602005013057T DE602005013057D1 DE 602005013057 D1 DE602005013057 D1 DE 602005013057D1 DE 602005013057 T DE602005013057 T DE 602005013057T DE 602005013057 T DE602005013057 T DE 602005013057T DE 602005013057 D1 DE602005013057 D1 DE 602005013057D1
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Germany
Prior art keywords
optical
recording medium
recording
absorption
different optical
Prior art date
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Active
Application number
DE602005013057T
Other languages
English (en)
Inventor
Tohru Yashiro
Yuki Nakamura
Tatsuo Mikami
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of DE602005013057D1 publication Critical patent/DE602005013057D1/de
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    • 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
    • G11B7/266—Sputtering or spin-coating layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
DE602005013057T 2005-01-31 2005-01-31 Optisches Aufzeichnungsmedium mit unterschiedlicher optischer Absorption der beiden Aufzeichnungsschichten Active DE602005013057D1 (de)

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Application Number Priority Date Filing Date Title
EP05001968A EP1686574B1 (de) 2005-01-31 2005-01-31 Optisches Aufzeichnungsmedium mit unterschiedlicher optischer Absorption der beiden Aufzeichnungsschichten

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DE602005013057D1 true DE602005013057D1 (de) 2009-04-16

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Country Status (2)

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DE (1) DE602005013057D1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2801739B2 (ja) * 1990-05-15 1998-09-21 パイオニア株式会社 多層記録膜の記録再生方法
JP2002170276A (ja) * 2000-12-01 2002-06-14 Pioneer Electronic Corp 光学式多層情報記録媒体
WO2003083851A1 (en) * 2002-04-02 2003-10-09 Koninklijke Philips Electronics N.V. Dual stack optical data storage medium
US7602694B2 (en) * 2002-12-13 2009-10-13 Koninklijke Philips Electronics N.V. Dual-stack optical data storage medium and use of such medium
JP2005025836A (ja) * 2003-06-30 2005-01-27 Ricoh Co Ltd 光記録媒体
JP2005044491A (ja) * 2003-07-10 2005-02-17 Ricoh Co Ltd 光記録媒体およびその製造方法

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EP1686574A1 (de) 2006-08-02
EP1686574B1 (de) 2009-03-04

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