HK170195A - Non-destructive method for magnetic measurements of recording disc members - Google Patents
Non-destructive method for magnetic measurements of recording disc membersInfo
- Publication number
- HK170195A HK170195A HK170195A HK170195A HK170195A HK 170195 A HK170195 A HK 170195A HK 170195 A HK170195 A HK 170195A HK 170195 A HK170195 A HK 170195A HK 170195 A HK170195 A HK 170195A
- Authority
- HK
- Hong Kong
- Prior art keywords
- recording
- recording disc
- disc members
- destructive method
- magnetic measurements
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/14—Measuring or plotting hysteresis curves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1207—Testing individual magnetic storage devices, e.g. records carriers or digital storage elements
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Digital Magnetic Recording (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Measuring Magnetic Variables (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6918487A | 1987-07-02 | 1987-07-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
HK170195A true HK170195A (en) | 1995-11-10 |
Family
ID=22087280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK170195A HK170195A (en) | 1987-07-02 | 1995-11-02 | Non-destructive method for magnetic measurements of recording disc members |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0297922B1 (ko) |
JP (1) | JP2940871B2 (ko) |
KR (1) | KR970003822B1 (ko) |
AT (1) | ATE100942T1 (ko) |
AU (1) | AU599295B2 (ko) |
DE (1) | DE3887395T2 (ko) |
HK (1) | HK170195A (ko) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1267434A (en) * | 1968-10-16 | 1972-03-22 | Internat Bussiness Machines Co | Apparatus and method of testing a magnetic recording medium |
JPS50951B1 (ko) * | 1969-11-21 | 1975-01-13 | ||
US3812529A (en) * | 1971-08-31 | 1974-05-21 | Teac Corp | System for discriminating classification of a magnetic recording medium |
JPS5814616B2 (ja) * | 1974-09-28 | 1983-03-19 | バスフ アクチェン ゲゼルシャフト | ジキキロクタンタイトクニジキエンバンノ ザンリユウジソクミツドノヒハカイソクテイソウチ |
FR2561427B1 (fr) * | 1984-03-13 | 1986-11-14 | Crouzet Sa | Procede d'identification de la nature d'un support magnetisable |
-
1988
- 1988-07-01 DE DE3887395T patent/DE3887395T2/de not_active Expired - Fee Related
- 1988-07-01 AT AT88306053T patent/ATE100942T1/de not_active IP Right Cessation
- 1988-07-01 EP EP88306053A patent/EP0297922B1/en not_active Expired - Lifetime
- 1988-07-01 AU AU18633/88A patent/AU599295B2/en not_active Ceased
- 1988-07-01 JP JP63164827A patent/JP2940871B2/ja not_active Expired - Lifetime
- 1988-07-02 KR KR1019880008264A patent/KR970003822B1/ko not_active IP Right Cessation
-
1995
- 1995-11-02 HK HK170195A patent/HK170195A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH0198119A (ja) | 1989-04-17 |
ATE100942T1 (de) | 1994-02-15 |
AU1863388A (en) | 1989-01-05 |
JP2940871B2 (ja) | 1999-08-25 |
KR970003822B1 (ko) | 1997-03-22 |
EP0297922A3 (en) | 1990-10-10 |
EP0297922A2 (en) | 1989-01-04 |
KR890002677A (ko) | 1989-04-11 |
DE3887395D1 (de) | 1994-03-10 |
EP0297922B1 (en) | 1994-01-26 |
AU599295B2 (en) | 1990-07-12 |
DE3887395T2 (de) | 1994-06-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |