JPH02144197U - - Google Patents
Info
- Publication number
- JPH02144197U JPH02144197U JP5080289U JP5080289U JPH02144197U JP H02144197 U JPH02144197 U JP H02144197U JP 5080289 U JP5080289 U JP 5080289U JP 5080289 U JP5080289 U JP 5080289U JP H02144197 U JPH02144197 U JP H02144197U
- Authority
- JP
- Japan
- Prior art keywords
- filter
- outside air
- information recording
- optical information
- dust removal
- 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
- 239000000428 dust Substances 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5080289U JPH02144197U (en:Method) | 1989-04-28 | 1989-04-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5080289U JPH02144197U (en:Method) | 1989-04-28 | 1989-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02144197U true JPH02144197U (en:Method) | 1990-12-06 |
Family
ID=31569669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5080289U Pending JPH02144197U (en:Method) | 1989-04-28 | 1989-04-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02144197U (en:Method) |
-
1989
- 1989-04-28 JP JP5080289U patent/JPH02144197U/ja active Pending