G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 7/24 (2006.01) B29C 65/48 (2006.01) G11B 7/26 (2006.01) G11B 23/40 (2006.01)
Patent
CA 2190285
A structure for optical disk, which has clear, durable indications around the center hole of a disk in such a manner that it does not affect a reference surface for clamping. In order to realize such a disk structure, a first optical disk (11) and a second optical disk (12), respectively having transparent substrates (11a) and (12a) with a center hole (10) and reflecting coatings (11b) and (12b) on one side, are integrally joined with an adhesive layer (13) in such a manner that the reflective coatings on the substrates are opposed to each other, and thus a composite optical disk (100) is formed. Flat areas of the substrates around the hole (10) are provided with indications (11d) and (12d) by printing or labeling.
L'invention concerne une structure pour disque optique, portant des indications claires et durables autour du trou central du disque de telle sorte qu'il n'empiète pas sur la surface de référence destinée à la fixation. La structure se compose d'un premier disque optique (11) et d'un second disque optique (12), respectivement dotés des substrats transparents (11A) et (12A) présentant un trou central (10) et un revêtement réfléchissant (11b) et (12b) sur une face, qui sont assemblés au moyen d'une couche d'adhésif (13) de telle sorte que les revêtements réfléchissant des substrats soient plaqués l'un contre l'autre et qu'un disque optique composite (100) soit formé. Les zones planes des substrats entourant le trou (10) portent des indications (11d) et (12d), qui sont imprimées ou étiquetées.
Amano Minami
Hagio Takeshi
Irie Hideyuki
Kakinuma Keiji
Mori Mikio
Fetherstonhaugh & Co.
Kabushiki Kaisha Toshiba
Toshiba-Emi Limited
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