Invention Application
- Patent Title: Production method for optical disc
- Patent Title (中): 光盘制作方法
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Application No.: US09853676Application Date: 2001-05-14
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Publication No.: US20010050444A1Publication Date: 2001-12-13
- Inventor: Masahiro Katsumura , Tetsuya Iida , Takashi Ueno
- Applicant: PIONEER CORPORATION
- Applicant Address: null
- Assignee: PIONEER CORPORATION
- Current Assignee: PIONEER CORPORATION
- Current Assignee Address: null
- Priority: JPP2000-139385 20000512
- Main IPC: B29D011/00
- IPC: B29D011/00 ; B29D017/00

Abstract:
The present invention is to provide a production method for an optical disc, capable of obtaining a good S/N ratio without deterioration of the stamper quality due to reaction with an electron attractive group contained in a resist material. The processes of forming a resist film on a substrate, patterning the resist film on the substrate by an electron beam cutting, forming a nickel alloy thin film on the patterned resist film, forming a nickel layer on the nickel alloy thin film by the electrocasting, and injection molding of a resin, using the nickel layer peeled off from the nickel alloy thin film as a stamper, are provided. The nickel alloy thin film has a composition containing Ni element as the main component as well as Ru element by less than 25% by weight.
Public/Granted literature
- US06695987B2 Production method for optical disc Public/Granted day:2004-02-24
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