Title:
ディスク基板の成形用金型
Document Type and Number:
Japanese Patent JP4251871
Kind Code:
B2
Abstract:
A resin ring 51 is press-fitted into a grove portion formed in an inner periphery surface of an interlocking ring 4. The resin ring 51 is made of a hard resin such as Teflon. The resin ring 51 as a low frictional lubricative member is interposed between the interlock ring 4 and an outer periphery ring 3. In addition, a cavity 6 as a closed space is formed between a stamper 1b as a molding surface of a fixed side mirror 1 and a mirror side molding surface 2b of a moving side mirror 2. While the moving side mirror 2 is being press-contracted to the fixed side mirror 1, when a resin material is filled into the cavity 6, the outer periphery ring 3 is slidably held in a groove of the moving side mirror 2 with predetermined clearances. In the interlock ring 4, a plurality of openings 4a which relieve gas produced by the disc resin material filled into the cavity 6 are formed.
Inventors:
Osamu Matsuura
Kazuhiro Miura
Hideaki Yoshimura
Shinsuke Kishi
Kazuhiro Miura
Hideaki Yoshimura
Shinsuke Kishi
Application Number:
JP2002585172A
Publication Date:
April 08, 2009
Filing Date:
April 26, 2002
Export Citation:
Assignee:
Sony Disc and Digital Solutions Co., Ltd.
International Classes:
B29C45/26; B29C45/34; B29L17/00
Domestic Patent References:
| JP7080844A | ||||
| JP7130010A | ||||
| JP8281661A | ||||
| JP2000048416A |
Attorney, Agent or Firm:
Masatomo Sugiura
Koichi Mori
Koichi Mori