Patent Number: 6,254,966

Title: Information recording mediums, supporter used in the mediums, manufacture methods of the supporter, manufacturing apparatus of the supporter and stampers for producing the mediums

Abstract: An information recording medium and a supporter used for the information recording medium capable of recording a land/groove recording by using a high density recording technique such as a super-resolution, resulting in a high density recording. An information recording medium B has a supporter 1A, on which a recording layer 5 is formed. On the supporter 1A, lands 2 and groove 3 are alternately formed as a minute track pattern. A crevice 4 having a depth Dc larger than a depth Dg of the respective grooves 3 is formed in the respective grooves 3 at one end of the respective grooves 3 in a width direction of the respective grooves.

Inventors: Kondo; Tetsuya (Kanagawa-ken, JP)

Assignee: Victor Company of Japan, Ltd.

International Classification: G11B 11/105 (20060101); G11B 11/00 (20060101); G11B 7/26 (20060101); G11B 7/007 (20060101); G11B 007/24 ()

Expiration Date: 07/03/2018