JPH0439885U

JPH0439885U -

Info

Publication number: JPH0439885U
Application number: JP1990082590U
Authority: JP
Priority date: 1990-08-02
Filing date: 1990-08-02
Publication date: 1992-04-03

Description

[Brief explanation of the drawing]

第１図は光デイスク側面の物理的形状の変化を
示す斜視図及び部分拡大断面図、第２図は第１図
に示す物理的形状の変化を表裏非対称に設けた場
合の正面図、第３図は光デイスク片面端部の物理
的形状の変化を示す斜視図及び部分拡大断面図で
ある。１……光デイスク、２……物理的形状の変化、
２−１……側面のギザギザ、２−２……凹凸、２
−３……Ｃカツト、２−４……片面のギザギザ、
２−５……段付き、２−６……Ｒカツト、２−７
……凸、３……内周部、４……外周部、５……記
録部。 Fig. 1 is a perspective view and partially enlarged sectional view showing changes in the physical shape of the side surface of the optical disk, Fig. 2 is a front view when the changes in physical form shown in Fig. 1 are provided asymmetrically on the front and back sides, and Fig. 3 The figures are a perspective view and a partially enlarged sectional view showing changes in the physical shape of the end of one side of the optical disk. 1... Optical disk, 2... Change in physical shape,
2-1... Jagged side surface, 2-2... Unevenness, 2
-3...C-cut, 2-4...Jagged on one side,
2-5...Stepped, 2-6...R cut, 2-7
...Convex, 3...Inner circumference, 4...Outer circumference, 5...Recording part.

Claims

[Scope of utility model registration request]

In optical discs such as compact discs, it is added to the side of the disc and one side near it.
An optical disc characterized by having a change in physical shape that allows the front and back sides to be determined by tactile sensation.