IT1109163B - Dispositivo di magnetizzazione statica a campo localizzato - Google Patents

Dispositivo di magnetizzazione statica a campo localizzato

Info

Publication number
IT1109163B
IT1109163B IT20989/78A IT2098978A IT1109163B IT 1109163 B IT1109163 B IT 1109163B IT 20989/78 A IT20989/78 A IT 20989/78A IT 2098978 A IT2098978 A IT 2098978A IT 1109163 B IT1109163 B IT 1109163B
Authority
IT
Italy
Prior art keywords
magnetization device
localized field
field static
static magnetization
localized
Prior art date
Application number
IT20989/78A
Other languages
English (en)
Other versions
IT7820989A0 (it
Original Assignee
Cii Honeywell Bull
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cii Honeywell Bull filed Critical Cii Honeywell Bull
Publication of IT7820989A0 publication Critical patent/IT7820989A0/it
Application granted granted Critical
Publication of IT1109163B publication Critical patent/IT1109163B/it

Links

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)
  • Measuring Magnetic Variables (AREA)
  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Magnetic Record Carriers (AREA)
IT20989/78A 1977-03-31 1978-03-09 Dispositivo di magnetizzazione statica a campo localizzato IT1109163B (it)

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
IT7820989A0 IT7820989A0 (it) 1978-03-09
IT1109163B true IT1109163B (it) 1985-12-16

Family

ID=9188863

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20989/78A IT1109163B (it) 1977-03-31 1978-03-09 Dispositivo di magnetizzazione statica a campo localizzato

Country Status (9)

Country Link
US (1) US4194110A (it)
JP (1) JPS594062B2 (it)
BR (1) BR7801454A (it)
DE (1) DE2811560C2 (it)
ES (1) ES467303A1 (it)
FR (1) FR2386112A1 (it)
GB (1) GB1569086A (it)
IT (1) IT1109163B (it)
NL (1) NL7802640A (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
NL7802640A (nl) 1978-10-03
JPS53123112A (en) 1978-10-27
FR2386112B1 (it) 1980-02-01
IT7820989A0 (it) 1978-03-09
US4194110A (en) 1980-03-18
ES467303A1 (es) 1978-10-16
GB1569086A (en) 1980-06-11
JPS594062B2 (ja) 1984-01-27
DE2811560C2 (de) 1983-03-31
DE2811560A1 (de) 1978-10-12
BR7801454A (pt) 1978-10-31
FR2386112A1 (fr) 1978-10-27

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