Loading patent…
AssigneeSumitomo Heavy Industries, LTD Seikoh Giken Co., LTD
InventorsHiroyuki Sawaishi, Yoshiyuki Goto
Estimating the term…
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.
A mold for molding a disk, comprising:
An adjustment member to be disposed in a mold for molding a disk comprising a first mirror-surface disk, a stamper attached to the first mirror-surface disk, and a second mirror-surface disk disposed in opposition to the first mirror-surface disk, the first mirror-surface disk and the second mirror-surface disk forming a cavity therebetween at the time of mold clamping, comprising:
A method of molding a disk substrate in which a fine pattern of a stamper disposed on either a movable-side mold assembly or a stationary-side mold assembly is transferred to the disk substrate, comprising:
Dependencies are inferred from the claim text.