Mold for molding disk, adjustment member, and method of molding disk substrate
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Aug 2, 2007
app pub date -
Mar 7, 2005
filing date -
Mar 8, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A mold for molding a disk and a method of molding a disk substrate which can enhance flatness and thus quality of a molded product are provided. The mold for molding a disk includes a first mirror-surface disk; a stamper (29) attached to the first mirror-surface disk; a second mirror-surface disk disposed in opposition to the first mirror-surface disk and forming a cavity therebetween at the time of mold clamping; and an adjustment member having a surface allowing the stamper (29) to slide thereon, formed near an outer circumference of the first mirror-surface disk, extending radially outward, and projecting toward the cavity. Even when, during the entire disk substrate being cooled, shrinkage of the disk substrate near the outer circumference thereof is small, whereas shrinkage of the remaining portion thereof is large, an increase in thickness of the disk substrate near the outer circumference thereof can be prevented.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully