JPS6417240A - Recording medium - Google Patents
Recording mediumInfo
- Publication number
- JPS6417240A JPS6417240A JP17206087A JP17206087A JPS6417240A JP S6417240 A JPS6417240 A JP S6417240A JP 17206087 A JP17206087 A JP 17206087A JP 17206087 A JP17206087 A JP 17206087A JP S6417240 A JPS6417240 A JP S6417240A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- recording film
- film
- magneto
- coercive force
- 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
Abstract
PURPOSE:To provide the recording capacity equiv. to the recording capacity of a recording medium made of sticking structure so that overwriting of information is enabled by laminating a magnetic recording film having the Curie temp. higher than the Curie temp. of a magneto-optical recording film and the coercive force at room temp. smaller than the coercive force of said film on the above-mentioned magneto- optical recording film. CONSTITUTION:The magnetic recording film 5 is formed by using the magnetic material having the Curie temp. higher than the Curie temp. of the magneto-optical recording film 4 and the coercive force at room temp. lower than the coercive force of said film. Any materials which are used for magnetic recording media such as magnetic disks, magnetic drums and magnetic tapes are usable for the magnetic material used to form the magnetic recording film. These materials may be polycrystalline and amorphous as far as the materials satisfy said conditions. The magneto-optical recording film and the polycrystalline magnetic recording film having an adequate difference in the Curie temp. and the coercive force at room temp. are thus provided in two layers and, therefore, the writing of information on the magneto-optical recording film and the magnetic recording film respectively is possible. The recording capacity equiv. to the recording capacity of the sticking type is thus obtd. with one substrate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62172060A JP2549122B2 (en) | 1987-07-11 | 1987-07-11 | Recording medium and information recording / reproducing method using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62172060A JP2549122B2 (en) | 1987-07-11 | 1987-07-11 | Recording medium and information recording / reproducing method using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6417240A true JPS6417240A (en) | 1989-01-20 |
JP2549122B2 JP2549122B2 (en) | 1996-10-30 |
Family
ID=15934792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62172060A Expired - Fee Related JP2549122B2 (en) | 1987-07-11 | 1987-07-11 | Recording medium and information recording / reproducing method using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2549122B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6435745A (en) * | 1987-07-23 | 1989-02-06 | Kerdix Inc | Recording structure composed of magneto-optical recording layer and magnetic recording layer and apparatus and method for recording and reading data |
JPH01165927U (en) * | 1988-05-16 | 1989-11-21 | ||
US5233578A (en) * | 1988-12-28 | 1993-08-03 | Canon Kabushiki Kaisha | Method of recording information on a recording medium having at least two magnetic layers |
US5272414A (en) * | 1990-05-08 | 1993-12-21 | I.T.M. Corporation | Discharge element, method of producing the same and apparatus comprising the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5778652A (en) * | 1980-11-01 | 1982-05-17 | Daido Steel Co Ltd | Thermal magnetic recording carrier and thermal magnetic recording system |
-
1987
- 1987-07-11 JP JP62172060A patent/JP2549122B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5778652A (en) * | 1980-11-01 | 1982-05-17 | Daido Steel Co Ltd | Thermal magnetic recording carrier and thermal magnetic recording system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6435745A (en) * | 1987-07-23 | 1989-02-06 | Kerdix Inc | Recording structure composed of magneto-optical recording layer and magnetic recording layer and apparatus and method for recording and reading data |
JPH01165927U (en) * | 1988-05-16 | 1989-11-21 | ||
US5233578A (en) * | 1988-12-28 | 1993-08-03 | Canon Kabushiki Kaisha | Method of recording information on a recording medium having at least two magnetic layers |
US5272414A (en) * | 1990-05-08 | 1993-12-21 | I.T.M. Corporation | Discharge element, method of producing the same and apparatus comprising the same |
Also Published As
Publication number | Publication date |
---|---|
JP2549122B2 (en) | 1996-10-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |