JPS61118119U

JPS61118119U -

Info

Publication number: JPS61118119U
Application number: JP1985001887U
Authority: JP
Priority date: 1985-01-11
Filing date: 1985-01-11
Publication date: 1986-07-25

Description

[Brief explanation of the drawing]

第１図、第２図、第３図、第４図、第５図およ
び第６図は、それぞれ、本考案の実施例を示す断
面図である。第７図は、第１図における保護板３
１の平面図である。第８図は、第１図における保
護板３１の部分拡大斜視図である。第９図、第１
０図および第１１図は、それぞれ、第２図、第３
図および第４図における保護板３１の平面図であ
る。第１２図は、第２図および第３図における保
護板３１の部分拡大斜視図である。第１３図は、
第４図および第５図における保護板３１の部分拡
大斜視図である。第１４図は、第６図における保
護板３１の平面図である。第１５図は、第６図に
おける保護板３１の部分拡大斜視図である。符号の説明、１……光記録デイスク、２５……
光記録部分、３１……保護板、３５……基板、４
……記録層、５，６……突部、９……切欠き部、
１０……間隙。 FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6 are sectional views showing embodiments of the present invention, respectively. Figure 7 shows the protective plate 3 in Figure 1.
1 is a plan view of FIG. FIG. 8 is a partially enlarged perspective view of the protection plate 31 in FIG. 1. Figure 9, 1st
Figure 0 and Figure 11 are Figures 2 and 3, respectively.
FIG. 5 is a plan view of the protection plate 31 in the figures and FIG. 4; FIG. 12 is a partially enlarged perspective view of the protection plate 31 in FIGS. 2 and 3. FIG. Figure 13 shows
5 is a partially enlarged perspective view of the protection plate 31 in FIGS. 4 and 5. FIG. FIG. 14 is a plan view of the protection plate 31 in FIG. 6. FIG. 15 is a partially enlarged perspective view of the protection plate 31 in FIG. 6. FIG. Explanation of symbols, 1... Optical recording disk, 25...
Optical recording portion, 31...protective plate, 35...substrate, 4
... Recording layer, 5, 6 ... Protrusion, 9 ... Notch,
10... Gap.

Claims

[Scope of utility model registration request]

The recording layer protects an optical recording portion having a recording layer formed by coating a dye or a pigment composition on a disk-shaped substrate having a hole in the center, and a disk-shaped protection plate having a hole in the center. In the optical recording disk integrated with the plate so as to face the plate with a gap, a protrusion is provided at the peripheral edge of the protective plate and/or the optical recording part, and these are integrated via the protrusion,
1. An optical recording disk characterized in that the inside and outside are communicated with each other by a gap between the protrusions or by providing a notch in the protrusion.