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Title:
DRAW-TYPE OPTICAL DISC CORRESPONDING TO COMPACT DISC OR COMPACT DISC-ROM
Document Type and Number:
Japanese Patent JPH05238150
Kind Code:
A
Abstract:

PURPOSE: To obtain a DRAW-type optical disc capable of preventing recording sensitivity from depending on wavelength and obtaining satisfactory regenerated signal by forming a recording film containing specific two types of phthalocyanine, a reflective film and a protecting film sequentially on a transparent substrate.

CONSTITUTION: A recording film formed using a spin coat technique on a transport substrate consists of a phthalocyanine compound expressed by formula I [X1 to X4 are an alkyl group, an alkoxy group, an alkylthio group, etc.; k, l, m, n are an integer of 0 to 2; M1 is Al, Ga, In, Si, Ge, Sn; Z1 is formula II (R1, R2 are an alkyl group, etc.); y1 is an integer of 1 or 2], and a phthalocyanine compound expressed by formula III [X5 to X8, o, p, q, r and M2 are the same as formula I; Z2 is formula IV (R5 is an alkyl group, etc.); y2 is an integer of 1 or 2]. Further, a protecting film is formed on the recording film following the formula of a vacuum-evaporated metal film, using an ultraviolet curable resin under a spin coat system and thus a DRAW-type optical disc is obtained.


Inventors:
MIYAZAKI SHUJI
ANDOU MUNENORI
Application Number:
JP7854992A
Publication Date:
September 17, 1993
Filing Date:
February 28, 1992
Export Citation:
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Assignee:
TOYO INK MFG CO
International Classes:
B41M5/26; G11B7/24; G11B7/244; (IPC1-7): B41M5/26; G11B7/24



 
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