JPH0185925U - - Google Patents
Info
- Publication number
- JPH0185925U JPH0185925U JP18203787U JP18203787U JPH0185925U JP H0185925 U JPH0185925 U JP H0185925U JP 18203787 U JP18203787 U JP 18203787U JP 18203787 U JP18203787 U JP 18203787U JP H0185925 U JPH0185925 U JP H0185925U
- Authority
- JP
- Japan
- Prior art keywords
- boss
- mask
- center
- disk
- disk substrate
- 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
- 239000000758 substrate Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
Landscapes
- Manufacturing Optical Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18203787U JPH0185925U (en]) | 1987-11-30 | 1987-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18203787U JPH0185925U (en]) | 1987-11-30 | 1987-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0185925U true JPH0185925U (en]) | 1989-06-07 |
Family
ID=31473496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18203787U Pending JPH0185925U (en]) | 1987-11-30 | 1987-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0185925U (en]) |
-
1987
- 1987-11-30 JP JP18203787U patent/JPH0185925U/ja active Pending