ZA922948B - Magnetic data medium - Google Patents

Magnetic data medium

Info

Publication number
ZA922948B
ZA922948B ZA922948A ZA922948A ZA922948B ZA 922948 B ZA922948 B ZA 922948B ZA 922948 A ZA922948 A ZA 922948A ZA 922948 A ZA922948 A ZA 922948A ZA 922948 B ZA922948 B ZA 922948B
Authority
ZA
South Africa
Prior art keywords
magnetic data
data medium
medium
magnetic
data
Prior art date
Application number
ZA922948A
Inventor
Charles Richard Jarvis
Richard Jarvis Charles
David John Sylvester
John Sylvester David
Original Assignee
Gec Avery Ltd
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 Gec Avery Ltd filed Critical Gec Avery Ltd
Publication of ZA922948B publication Critical patent/ZA922948B/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/716—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by two or more magnetic layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/855—Coating only part of a support with a magnetic layer
ZA922948A 1991-04-23 1992-04-23 Magnetic data medium ZA922948B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919108701A GB9108701D0 (en) 1991-04-23 1991-04-23 Magnetic data medium

Publications (1)

Publication Number Publication Date
ZA922948B true ZA922948B (en) 1992-12-30

Family

ID=10693797

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA922948A ZA922948B (en) 1991-04-23 1992-04-23 Magnetic data medium

Country Status (3)

Country Link
GB (2) GB9108701D0 (en)
WO (1) WO1992018977A1 (en)
ZA (1) ZA922948B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8538801B2 (en) 1999-02-19 2013-09-17 Exxonmobile Research & Engineering Company System and method for processing financial transactions
CN106778989B (en) * 2016-11-22 2020-04-21 中钞特种防伪科技有限公司 Anti-counterfeiting element and anti-counterfeiting product

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452140A1 (en) * 1979-03-21 1980-10-17 Automatisme Cie Gle MAGNETIC TITLE
EP0033041A1 (en) * 1980-01-25 1981-08-05 Rhone-Poulenc Systemes Security magnetic recording support and process for its manufacture
CA1241741A (en) * 1984-05-24 1988-09-06 Robert A. Scranton Variable impedance contrast in data storage media
WO1987005728A1 (en) * 1986-03-12 1987-09-24 Skidata Computerhandelsgesellschaft M.B.H. Process for protecting a data support against falsification, data support protected against falsification and device for handling,processing and inspecting the data support
US4777540A (en) * 1986-03-18 1988-10-11 American Magnetics Corp. Magnetic card reader with head stop arrangement
GB8830106D0 (en) * 1988-12-23 1989-02-22 Coin Controls Improved security system

Also Published As

Publication number Publication date
WO1992018977A1 (en) 1992-10-29
GB2255046A (en) 1992-10-28
GB9208828D0 (en) 1992-06-10
GB9108701D0 (en) 1991-06-12

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