Title:
光情報記録媒体及びその製造方法、並びに光情報記録媒体の保持方法
Document Type and Number:
Japanese Patent JP5065461
Kind Code:
B2
Abstract:
A disc-shaped optical data recording medium has a signal recording layer for reading and/or writing data using light, and a 10 ¼m to 200 ¼m thick transparent protective layer disposed over the signal recording layer. The optical data recording medium includes a protrusion projecting from the surface of the transparent protective layer on the light-incidence surface side to which light is emitted to the signal recording layer. The protrusion is disposed in an area between a center hole and a clamping area (CA) where the optical data recording medium is held when reading and/or writing data in the signal recording layer.
Inventors:
Kazuhide Hayashi
Ono Eiji
Masatsugu Mouri
Ono Eiji
Masatsugu Mouri
Application Number:
JP2010195573A
Publication Date:
October 31, 2012
Filing Date:
September 01, 2010
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
B29C45/26; B29D17/00; G11B7/24; G11B7/24047; G11B7/26; G11B17/028; (IPC1-7): C04B28/18; C04B7/345
Domestic Patent References:
| JP2002184037A | ||||
| JP10106044A | ||||
| JP9219038A | ||||
| JP2000331377A |
Attorney, Agent or Firm:
Mitsuo Tanaka
Samejima Mutsumi
Mitsuo Wada
Kawabata Junichi
Kazuhisa Inaba
Samejima Mutsumi
Mitsuo Wada
Kawabata Junichi
Kazuhisa Inaba