FR2386112A1 - Dispositif d'aimantation statique a champ localise - Google Patents
Dispositif d'aimantation statique a champ localiseInfo
- Publication number
- FR2386112A1 FR2386112A1 FR7709823A FR7709823A FR2386112A1 FR 2386112 A1 FR2386112 A1 FR 2386112A1 FR 7709823 A FR7709823 A FR 7709823A FR 7709823 A FR7709823 A FR 7709823A FR 2386112 A1 FR2386112 A1 FR 2386112A1
- Authority
- FR
- France
- Prior art keywords
- magnetation
- localized field
- field static
- magnetization device
- localized
- 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
- 230000003068 static effect Effects 0.000 title abstract 2
- 230000005415 magnetization Effects 0.000 abstract 2
- 230000006698 induction Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
- G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
- G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
- G06K1/125—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by magnetic means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Artificial Intelligence (AREA)
- Digital Magnetic Recording (AREA)
- Magnetic Heads (AREA)
- Thin Magnetic Films (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Credit Cards Or The Like (AREA)
- Measuring Magnetic Variables (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Dispositif d'aimantation statique à champ localisé comprenant une couche magnétique déposée sur un substrat. Selon l'invention, le dispositif d'aimantation est caractérisé en ce que ladite couche comprend une succession de zones adjacentes ayant alternativement des longueurs d1 et d 2 différentes, l'une étant très supérieure à l'autre, ainsi que des inductions magnétiques de sens opposé. L'invention est applicable aux lecteurs de chèques.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7709823A FR2386112A1 (fr) | 1977-03-31 | 1977-03-31 | Dispositif d'aimantation statique a champ localise |
US05/880,331 US4194110A (en) | 1977-03-31 | 1978-02-23 | Localized-field static magnetizing device |
ES467303A ES467303A1 (es) | 1977-03-31 | 1978-02-24 | Dispositivo de imantacion estatica con campo localizado. |
GB9083/78A GB1569086A (en) | 1977-03-31 | 1978-03-07 | Localised-field static magnetising device |
BR7801454A BR7801454A (pt) | 1977-03-31 | 1978-03-09 | Dispositivo de magnetizacao estatica em campo localizado |
IT20989/78A IT1109163B (it) | 1977-03-31 | 1978-03-09 | Dispositivo di magnetizzazione statica a campo localizzato |
NL7802640A NL7802640A (nl) | 1977-03-31 | 1978-03-10 | Inrichting voor plaatselijke magnetisatie van een materiaal. |
DE2811560A DE2811560C2 (de) | 1977-03-31 | 1978-03-16 | Vorrichtung zur statischen Magnetisierung mit lokalisiertem Feld |
JP53034934A JPS594062B2 (ja) | 1977-03-31 | 1978-03-28 | 局部磁界による静上磁化装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7709823A FR2386112A1 (fr) | 1977-03-31 | 1977-03-31 | Dispositif d'aimantation statique a champ localise |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2386112A1 true FR2386112A1 (fr) | 1978-10-27 |
FR2386112B1 FR2386112B1 (fr) | 1980-02-01 |
Family
ID=9188863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7709823A Granted FR2386112A1 (fr) | 1977-03-31 | 1977-03-31 | Dispositif d'aimantation statique a champ localise |
Country Status (9)
Country | Link |
---|---|
US (1) | US4194110A (fr) |
JP (1) | JPS594062B2 (fr) |
BR (1) | BR7801454A (fr) |
DE (1) | DE2811560C2 (fr) |
ES (1) | ES467303A1 (fr) |
FR (1) | FR2386112A1 (fr) |
GB (1) | GB1569086A (fr) |
IT (1) | IT1109163B (fr) |
NL (1) | NL7802640A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2820835A1 (de) * | 1977-05-13 | 1978-11-23 | Cii Honeywell Bull | Einrichtung zum abtasten magnetisierbarer informationen |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1109303B (it) * | 1978-10-30 | 1985-12-16 | Ipm Ind Politecnica Meridional | Carta di credito a magnetizzazione anisotropa uniassale |
JPS6452223A (en) * | 1987-05-14 | 1989-02-28 | Nippon Telegraph & Telephone | Magnetic card |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3025503A (en) * | 1956-08-01 | 1962-03-13 | Honeywell Regulator Co | Information storage record and apparatus |
US3100834A (en) * | 1959-06-30 | 1963-08-13 | Ibm | Magnetic data processing |
US3409853A (en) * | 1966-10-14 | 1968-11-05 | Collins Corp G L | Method and apparatus for producing duplicate magnetized articles and articles produced thereby |
US3613101A (en) * | 1970-01-21 | 1971-10-12 | Digitronics Corp | Magnetic recording utilizing a selective magnetic shielding structure |
-
1977
- 1977-03-31 FR FR7709823A patent/FR2386112A1/fr active Granted
-
1978
- 1978-02-23 US US05/880,331 patent/US4194110A/en not_active Expired - Lifetime
- 1978-02-24 ES ES467303A patent/ES467303A1/es not_active Expired
- 1978-03-07 GB GB9083/78A patent/GB1569086A/en not_active Expired
- 1978-03-09 IT IT20989/78A patent/IT1109163B/it active
- 1978-03-09 BR BR7801454A patent/BR7801454A/pt unknown
- 1978-03-10 NL NL7802640A patent/NL7802640A/xx not_active Application Discontinuation
- 1978-03-16 DE DE2811560A patent/DE2811560C2/de not_active Expired
- 1978-03-28 JP JP53034934A patent/JPS594062B2/ja not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2820835A1 (de) * | 1977-05-13 | 1978-11-23 | Cii Honeywell Bull | Einrichtung zum abtasten magnetisierbarer informationen |
Also Published As
Publication number | Publication date |
---|---|
US4194110A (en) | 1980-03-18 |
NL7802640A (nl) | 1978-10-03 |
ES467303A1 (es) | 1978-10-16 |
JPS594062B2 (ja) | 1984-01-27 |
JPS53123112A (en) | 1978-10-27 |
IT7820989A0 (it) | 1978-03-09 |
DE2811560C2 (de) | 1983-03-31 |
DE2811560A1 (de) | 1978-10-12 |
IT1109163B (it) | 1985-12-16 |
GB1569086A (en) | 1980-06-11 |
FR2386112B1 (fr) | 1980-02-01 |
BR7801454A (pt) | 1978-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |