Title:
LIGHT REFLECTING FILM AND OPTICAL RECORDING INFORMATION MEDIUM USING THE SAME
Document Type and Number:
Japanese Patent JPH06243509
Kind Code:
A
Abstract:
PURPOSE: To obtain a light reflecting film used for a rewritable high density optical recording medium by using an Ag alloy having a prescribed reflectance or above in a specified wavelength range and capable of controlling its heat conductivity.
CONSTITUTION: This light reflecting film has ≥75% reflectance and 0.30-3.2W/cm.k heat conductivity when a light source emitting light having such a short wavelength as 450-830nm is used. This light reflecting film is made of an Ag alloy selected among Ag-In, Ag-V and Ag-Nb each having ≥75% reflectance in the wavelength range of 450-700nm and capable of freely controlling its heat conductivity according to the ratio in the compsn.
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Inventors:
HARIGAI MASATO
KAGEYAMA YOSHIYUKI
IWASAKI HIROKO
IDE YUKIO
KAGEYAMA YOSHIYUKI
IWASAKI HIROKO
IDE YUKIO
Application Number:
JP5499693A
Publication Date:
September 02, 1994
Filing Date:
February 19, 1993
Export Citation:
Assignee:
RICOH KK
International Classes:
G02B5/08; G11B7/258; G11B7/259; (IPC1-7): G11B7/24; G02B5/08
Attorney, Agent or Firm:
Eiji Tomomatsu (1 person outside)