JPS6245772U - - Google Patents
Info
- Publication number
- JPS6245772U JPS6245772U JP1985136699U JP13669985U JPS6245772U JP S6245772 U JPS6245772 U JP S6245772U JP 1985136699 U JP1985136699 U JP 1985136699U JP 13669985 U JP13669985 U JP 13669985U JP S6245772 U JPS6245772 U JP S6245772U
- Authority
- JP
- Japan
- Prior art keywords
- recording surface
- disk
- thickness
- track guard
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
第１図は本考案のマルチピースデイスクの一実
施例を示す断面図、第２図は従来のデイスクの断
面図、第３図は従来のデイスクのコンプレツシヨ
ン成形による製造工程の一部を示す図である。
１……マルチピースデイスク、２……中心孔、
３……中心部、４……第１のトラツクガード部、
５……記録面、６……外周部、Ａ……デイスク部
、Ｂ……第２のトラツクガード部、ｔ……厚さ。
Fig. 1 is a sectional view showing an embodiment of the multi-piece disc of the present invention, Fig. 2 is a sectional view of a conventional disc, and Fig. 3 shows part of the manufacturing process of a conventional disc by compression molding. It is a diagram. 1...Multi-piece disk, 2...Center hole,
3...Central part, 4...First track guard part,
5...Recording surface, 6...Outer circumferential portion, A...Disk portion, B...Second track guard portion, t...Thickness.
Claims (1)
内周部に設けられた上記記録面よりその厚さが厚
い第１のトラツクガード部を有する円盤状のデイ
スク部に、このデイスク部とは別途形成される第
２のトラツクガード部を前記デイスク部の外周部
に取付けて、前記記録面の厚さより前記第２のト
ラツクガード部の厚さを厚くしたことを特徴とす
るマルチピースデイスク。 A disk-shaped disk portion having a recording surface on which information signals are recorded and a first track guard portion provided on the inner circumference of the recording surface and having a thickness thicker than the recording surface. A multi-piece disk characterized in that a separately formed second track guard section is attached to the outer circumference of the disk section, and the thickness of the second track guard section is made thicker than the thickness of the recording surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985136699U JPS6245772U (en) | 1985-09-06 | 1985-09-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985136699U JPS6245772U (en) | 1985-09-06 | 1985-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6245772U true JPS6245772U (en) | 1987-03-19 |
Family
ID=31040060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985136699U Pending JPS6245772U (en) | 1985-09-06 | 1985-09-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6245772U (en) |
-
1985
- 1985-09-06 JP JP1985136699U patent/JPS6245772U/ja active Pending