G - Physics
11
B
G11B 7/26 (2006.01) B29C 65/48 (2006.01) B29C 65/78 (2006.01) G11B 7/24 (2006.01)
Patent
CA 2320243
The invention relates to a substrate disk consisting of two interconnected substrates (1, 2), with a centre hole (3). The inventive substrate disk is of an especially good quality and can be produced with simple means. According to the invention, one of the substrates (1, 2) from which the disk is formed has at least one projection (5) on the edge of the centre hole, said projection projecting away from the substrate surface (6).
L'invention concerne un disque support composé de deux substrats (1, 2) interconnectés, qui comprend un trou médian (3). Ce disque support est de particulièrement bonne qualité et peut être produit avec des moyens simples, si un des substrats (1, 2) qui forment ledit disque support comporte au niveau de l'arête du trou médian au moins une partie saillante (5) dépassant de la surface du substrat (6).
Robic
Steag Hamatech Ag
LandOfFree
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