FR2525795A1
Expired / Lapsed
FR
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METHOD FOR MANUFACTURING A PROTECTED OPTICAL DISK AND DISC OBTAINED THEREBY
Assignee: Thales SA
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Filing: 1982-04-27
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Granted: —
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Expires: 2002-04-27
Abstract
Abstract A protected optical disk for recording information is fabricated by a method whereby at least one cover is rigidly fixed by a welding to an optical disk having at least one layer of recording material which can be both written and read optically. At least two joints are thus formed by welding, each joint being constituted by at least two weld zones each located respectively within a concentric ring.
Inventors
- 👤 Francois Lange
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-06 17:32
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/26; B; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C65/78; B29C65/7802; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/302; B29C66/3022; B29C66/30221; B29C66/30223; B29C66/3024; B29C66/40; B29C66/41; B29C66/43; B29C66/45; B29C66/452; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; G11B7/24015; G11B7/24018; G11B7/24021; B29C65/04; B29C65/06; B29C65/0672; B29C65/14; B29C65/16; B29C65/18; B29C65/20; B29C66/50; B29C66/51; B29C66/54; B29C66/71; B29K; B29K2033/00; B29K2033/04; B29K2033/12; B29L; B29L2017/00; B29L2017/001; B29L2017/003; B29L2017/005
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