Optical recording medium
| Title: | Optical recording medium |
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| Patent Number: | 7,803,445 |
| Publication Date: | September 28, 2010 |
| Appl. No: | 11/884933 |
| Application Filed: | February 08, 2006 |
| Abstract: | The main object of the present invention is to provide an optical recording medium with no need to use a control subject substance of the PRTR law, capable of using for an optical recording device with a blue laser, and giving consideration to the environmental aspect. To attain the object, the present invention provides an optical recording medium comprising: a reflective layer containing an aluminum composition as the main component including both aluminum or an aluminum alloy and a metal oxide of a metal other than aluminum; and a dielectric protective layer, formed in contact with the reflective layer, containing a niobium composition as the main component including both silicon dioxide or titanium dioxide and a niobium nitrided oxide. |
| Inventors: | Hosoda, Yasuo (Saitama, JP) |
| Assignees: | Pioneer Corporation (Tokyo, JP) |
| Claim: | 1. An optical recording medium comprising: a reflective layer containing an aluminum composition as the main component including both aluminum or an aluminum alloy and a metal oxide of a metal other than aluminum; and a dielectric protective layer, formed in contact with the reflective layer, containing a niobium composition as the main component including both silicon dioxide or titanium dioxide and a niobium nitrided oxide wherein the metal oxide contained in the reflective layer is SnO 2 , TiO 2 or Nb 2 O 3 . |
| Claim: | 2. The optical recording medium according to claim 1 , comprising a recording layer formed on the dielectric protective layer, and a second dielectric protective layer, formed on the recording layer, containing the niobium composition as the main component. |
| Current U.S. Class: | 428/641 |
| Patent References Cited: | 6716507 April 2004 Tabata 2004/0222479 November 2004 Uno et al. 2004-158145 June 2004 2004-171631 June 2004 03/101750 December 2003 |
| Other References: | International Search Report for PCT/JP2006/302168 mailed May 16, 2006. cited by other |
| Primary Examiner: | Mulvaney, Elizabeth |
| Attorney, Agent or Firm: | Nixon & Vanderhye P.C. |
| Accession Number: | edspgr.07803445 |
| Database: | USPTO Patent Grants |
| Language: | English |
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