Title:
【発明の名称】光学情報記録再生消去部材
Document Type and Number:
Japanese Patent JP2523907
Kind Code:
B2
Abstract:
PURPOSE:To prevent the deterioration in cycle characteristic by forming a 2nd heat resistant layer provided on a recording thin-film layer as a thin film having <= 40nm thickness. CONSTITUTION:The member for recording and erasing information by thermally changing the state of the thin film by irradiation with a laser beam, etc., is constituted of a 1st heat resistant layer 2 formed on a substrate 1, a memory thin-film layer 3, the 2nd heat resistant layer 4, and heat radiating reflecting layer 5. The constitution of the film thickness as small as <= 40nm is selected for the 2nd heat resistant layer 4 between the recording thin-film layer 3 and the heat radiating reflecting layer 5. The deterioration in the recording member by the material transfer of the recording thin film is prohibited by electing the constitution to decrease the expansion quantity of the heat resistant layer in such a manner.
Inventors:
OOTA TAKEO
UCHIDA MASAMI
YOSHIOKA KAZUMI
INOE KAZUO
UCHIDA MASAMI
YOSHIOKA KAZUMI
INOE KAZUO
Application Number:
JP31805189A
Publication Date:
August 14, 1996
Filing Date:
December 07, 1989
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G11B7/24; G11B7/2433; (IPC1-7): G11B7/24
Domestic Patent References:
| JP63259855A |
Attorney, Agent or Firm:
Tomoyuki Takimoto