JPH01113830U - - Google Patents
Info
- Publication number
- JPH01113830U JPH01113830U JP1988007057U JP705788U JPH01113830U JP H01113830 U JPH01113830 U JP H01113830U JP 1988007057 U JP1988007057 U JP 1988007057U JP 705788 U JP705788 U JP 705788U JP H01113830 U JPH01113830 U JP H01113830U
- Authority
- JP
- Japan
- Prior art keywords
- pits
- circular substrate
- optical method
- recording film
- film laminated
- 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.)
- Granted
Links
- 239000000758 substrate Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims 1
- 230000001681 protective effect Effects 0.000 description 1
Description
第１図は本考案の実施例の縦断面図、第２図は
平面図、第３図は第２図―線における拡大縦
断面図、第４図は一使用状態の斜面図である。
１……記録膜積層部、２……グルーブ、３……
円形基板、４……鏡面部、５……保護膜、６……
中心孔、６１……中央凹部、１０……デイスクカ
ートリツジ。
FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a plan view, FIG. 3 is an enlarged longitudinal sectional view taken along the line 2--FIG. 4, and FIG. 4 is a perspective view of one state of use. 1...Recording film laminated portion, 2...Groove, 3...
Circular substrate, 4... Mirror surface portion, 5... Protective film, 6...
Center hole, 6 1 ...Central recess, 10...Disk cartridge.
Claims (1)
可能な記録膜積層部１と、グループ２又はピツト
を円形基板３上に形成した情報デイスクにおいて
、前記円形基板３上に外周部で、前記記録膜積層
部１及びグルーブ２又はピツトのある内側に鏡面
部４を備えたことを特徴とする情報デイスク。 In an information disk in which a recording film laminated portion 1 that can be recorded and reproduced by an optical method or a magneto-optical method, and groups 2 or pits are formed on a circular substrate 3, the recording film is formed on the outer periphery of the circular substrate 3. An information disk characterized in that a mirror surface part 4 is provided on the inside with a film laminated part 1 and grooves 2 or pits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988007057U JPH0753134Y2 (en) | 1988-01-25 | 1988-01-25 | Information disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988007057U JPH0753134Y2 (en) | 1988-01-25 | 1988-01-25 | Information disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01113830U true JPH01113830U (en) | 1989-07-31 |
| JPH0753134Y2 JPH0753134Y2 (en) | 1995-12-06 |
Family
ID=31211750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988007057U Expired - Lifetime JPH0753134Y2 (en) | 1988-01-25 | 1988-01-25 | Information disc |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0753134Y2 (en) |
-
1988
- 1988-01-25 JP JP1988007057U patent/JPH0753134Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0753134Y2 (en) | 1995-12-06 |
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