Patent Number: 7,708,543

Title: Stamper for magnetic recording media, method of manufacturing magnetic recording media using the same, and method of manufacturing stamper for magnetic recording media

Abstract: According to one embodiment, a stamper for a magnetic recording media has patterns of protrusions and recesses to manufacture a discrete track recording type magnetic recording media having servo areas including an address portion, a preamble portion and a burst portion, and data areas including a recording track portion, the patterns of protrusions and recesses being formed at a pitch of 400 nm or less, in which a magnitude relation of depths of recesses corresponding to the address portion, the preamble portion, the burst portion and the recording track portion is inverted to a magnitude relation of area ratios of the protrusions to the recesses in the address portion, the preamble portion, the burst portion and the recording track portion.

Inventors: Shirotori; Satoshi (Fuchu, JP), Sakurai; Masatoshi (Tokyo, JP), Kamata; Yoshiyuki (Tokyo, JP), Kikitsu; Akira (Yokohama, JP)

Assignee: Kabushiki Kaisha Toshiba

International Classification: B29C 59/00 (20060101); B29D 17/00 (20060101)

Expiration Date: 5/04/12018