JPH0439821U - - Google Patents
Info
- Publication number
- JPH0439821U JPH0439821U JP1990082586U JP8258690U JPH0439821U JP H0439821 U JPH0439821 U JP H0439821U JP 1990082586 U JP1990082586 U JP 1990082586U JP 8258690 U JP8258690 U JP 8258690U JP H0439821 U JPH0439821 U JP H0439821U
- Authority
- JP
- Japan
- Prior art keywords
- medium
- protective film
- shows
- transparent protective
- utility
- 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
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims 1
- 239000000758 substrate Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
第１図乃至第３図には本考案の第１実施例に係
り、第１図は光テープの構造を示す断面図、第２
図は顕微鏡観察の結果を示す図、第３図は反射率
を示す図、第４図及び第５図には本考案の第２実
施例にかかり、第４図は透過率を示す図、第５図
顕微鏡観察の結果を示す図、第６図及び第７図は
従来例に係り、第６図は光ヘツド装置を示す図、
第７図は光ヘツド装置の光テープ摺接部の拡大図
である。
Ｔ……光テープ、２１……非磁性基体、２２…
…記録層、２３……記録層保護膜、２４……透光
性保護膜。
1 to 3 relate to the first embodiment of the present invention, FIG. 1 is a sectional view showing the structure of the optical tape, and FIG.
3 shows the results of microscopic observation, FIG. 3 shows the reflectance, FIGS. 4 and 5 show the second embodiment of the present invention, and FIG. 4 shows the transmittance. Figure 5 shows the results of microscopic observation, Figures 6 and 7 relate to the conventional example, Figure 6 shows the optical head device,
FIG. 7 is an enlarged view of the optical tape sliding contact portion of the optical head device. T... Optical tape, 21... Nonmagnetic substrate, 22...
... Recording layer, 23 ... Recording layer protective film, 24 ... Transparent protective film.
Claims (1)
る光学的記録媒体にあつて、該媒体の表面に透光
性保護膜が形成されたことを特徴とする光学的記
録媒体。 1. An optical recording medium for recording and/or reproducing information by irradiating light, characterized in that a transparent protective film is formed on the surface of the medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990082586U JPH0439821U (en) | 1990-08-02 | 1990-08-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990082586U JPH0439821U (en) | 1990-08-02 | 1990-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0439821U true JPH0439821U (en) | 1992-04-03 |
Family
ID=31629538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990082586U Pending JPH0439821U (en) | 1990-08-02 | 1990-08-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0439821U (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987633A (en) * | 1982-11-10 | 1984-05-21 | Toyo Ink Mfg Co Ltd | Information recording medium |
| JPS6278746A (en) * | 1985-10-02 | 1987-04-11 | Hitachi Ltd | Optical recording tape and its production |
| JPS62234245A (en) * | 1986-04-02 | 1987-10-14 | Nissha Printing Co Ltd | Optical disk |
| JPS62256249A (en) * | 1986-04-23 | 1987-11-07 | ドレクスラ−・テクノロジイ・コ−ポレ−シヨン | Optical recording medium |
| JPS62291731A (en) * | 1986-06-10 | 1987-12-18 | Dainippon Printing Co Ltd | Optical information recording body |
| JPS6459652A (en) * | 1987-08-31 | 1989-03-07 | Nec Corp | Optical disk |
| JPH01109550A (en) * | 1987-10-22 | 1989-04-26 | Fuji Xerox Co Ltd | Optical disk substrate |
-
1990
- 1990-08-02 JP JP1990082586U patent/JPH0439821U/ja active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987633A (en) * | 1982-11-10 | 1984-05-21 | Toyo Ink Mfg Co Ltd | Information recording medium |
| JPS6278746A (en) * | 1985-10-02 | 1987-04-11 | Hitachi Ltd | Optical recording tape and its production |
| JPS62234245A (en) * | 1986-04-02 | 1987-10-14 | Nissha Printing Co Ltd | Optical disk |
| JPS62256249A (en) * | 1986-04-23 | 1987-11-07 | ドレクスラ−・テクノロジイ・コ−ポレ−シヨン | Optical recording medium |
| JPS62291731A (en) * | 1986-06-10 | 1987-12-18 | Dainippon Printing Co Ltd | Optical information recording body |
| JPS6459652A (en) * | 1987-08-31 | 1989-03-07 | Nec Corp | Optical disk |
| JPH01109550A (en) * | 1987-10-22 | 1989-04-26 | Fuji Xerox Co Ltd | Optical disk substrate |
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