JPS6176519U

JPS6176519U -

Info

Publication number: JPS6176519U
Application number: JP1984162549U
Authority: JP
Priority date: 1984-10-26
Filing date: 1984-10-26
Publication date: 1986-05-23

Description

[Brief explanation of the drawing]

第１図ａは本考案のスペーサを構成するスペー
サブロツクの実施例を示す平面図、同図ｂは同上
の正面図、第２図ａは第１図ａ，ｂに示すスペー
サブロツクにより構成したスペーサの基板に対す
る嵌着状態を示す平面図、第２図ｂは第２図ａの
−線断面図、第３図ａは基板に対する回転バ
ランスを調整した状態のスペーサの配置を示す平
面図、第３図ｂは第３図ｂの−線断面図、第
４図ａは基板に対し各スペーサブロツクの端面の
みに接着剤を用いて取り付けた状態を示す平面図
、第４図ｂは第４図ａのＡ部を拡大した断面図、
第５図は従来のスペーサを用いた光デイスクの断
面図である。１…スペーサブロツク、１ａ，１ｂ…平行溝、
２…基板、５…スペーサ。 FIG. 1a is a plan view showing an embodiment of the spacer block constituting the spacer of the present invention, FIG. 1b is a front view of the same, and FIG. 2a is a spacer constructed from the spacer blocks shown in FIGS. FIG. 2b is a sectional view taken along the - line in FIG. 2a, and FIG. Figure b is a sectional view taken along the - line in Figure 3b, Figure 4a is a plan view showing the state in which each spacer block is attached to the substrate using adhesive only at its end face, and Figure 4b is Figure 4a. An enlarged cross-sectional view of part A of
FIG. 5 is a sectional view of an optical disk using a conventional spacer. 1...Spacer block, 1a, 1b...Parallel groove,
2...Substrate, 5...Spacer.

Claims

[Scope of utility model registration request]

In a spacer for an optical disk that forms a certain space between a pair of substrates having a recording layer, the spacer has two arcuate parallel grooves that can be fitted into both substrates, and an arbitrary number of grooves. 1. A spacer for an optical disk, characterized in that it is constituted by a group of arc-shaped spacer blocks surrounding both substrates by aligning them.