Mold for molding of substrate for information recording medium
AssigneeCanon Kabushiki Kaisha
InventorsTomoyuki Tamura, Mizuho Hiraoka, Hiroyuki Imataki, Tetsuya Sato
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Abstract
A mold for molding a plurality of substrates for an information recording medium includes a fixing member, a plurality of units fixed to the fixing member, and a molding cavity. Each of the units has a preformat pattern with a surface corresponding to information recording medium formed on its surface, and the molding cavity is disposed opposite to the units so that the preformat patterns face the molding cavity.
Claims70
A mold for molding a plurality of substrates for an information recording medium, said mold comprising:
- a fixing member;
- a plurality of units fixed to said fixing member, each of the units has on its surface a preformat pattern with a surface corresponding to the information recording medium;
- and
- a molding cavity disposed opposite to said units so that said preformat patterns face said molding cavity.
A mold for molding a substrate for an information recording medium, said mold comprising:
- a bonding member;
- a plurality of units bonded to said bonding member, each unit having on its surface a preformat pattern corresponding to the information recording medium and with a void formed between each unit, and
- a molding cavity disposed opposite to said units so that said preformat patterns face said molding cavity, wherein
- said bonding member is a sealing member for sealing the voids between said units.
A mold for cast molding a plurality of substrates for an information recording medium, said mold comprising:
- a fixing member;
- and
- a plurality of units fixed to said fixing member and having a void between each unit, with each of the units having on its surface a preformat pattern corresponding to the information recording medium;
- and
- a sealing material for sealing the voids between said units.
Dependencies are inferred from the claim text.