FR2072907A5 - - Google Patents

Info

Publication number
FR2072907A5
FR2072907A5 FR7043681A FR7043681A FR2072907A5 FR 2072907 A5 FR2072907 A5 FR 2072907A5 FR 7043681 A FR7043681 A FR 7043681A FR 7043681 A FR7043681 A FR 7043681A FR 2072907 A5 FR2072907 A5 FR 2072907A5
Authority
FR
France
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.)
Expired
Application number
FR7043681A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unisys Group Services Ltd
Sperry Corp
Original Assignee
Sperry Rand Ltd
Sperry Rand Corp
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 Sperry Rand Ltd, Sperry Rand Corp filed Critical Sperry Rand Ltd
Application granted granted Critical
Publication of FR2072907A5 publication Critical patent/FR2072907A5/fr
Expired legal-status Critical Current

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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/147—Structure or manufacture of heads, e.g. inductive with cores being composed of metal sheets, i.e. laminated cores with cores composed of isolated magnetic layers, e.g. sheets
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
FR7043681A 1969-12-04 1970-12-04 Expired FR2072907A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88225269A 1969-12-04 1969-12-04

Publications (1)

Publication Number Publication Date
FR2072907A5 true FR2072907A5 (fr) 1971-09-24

Family

ID=25380210

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7043681A Expired FR2072907A5 (fr) 1969-12-04 1970-12-04

Country Status (2)

Country Link
US (1) US3662122A (fr)
FR (1) FR2072907A5 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431745A1 (fr) * 1978-07-20 1980-02-15 Sony Corp Appareil d'enregistrement et/ou de reproduction de carte magnetique
WO1991010230A1 (fr) * 1990-01-04 1991-07-11 Eastman Kodak Company Ensemble de tete magnetique a configuration tripode destinee a etre utilise en combinaison avec une carte magnetique a force coercitive elevee

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4857018U (fr) * 1971-11-02 1973-07-20
US3986209A (en) * 1974-04-05 1976-10-12 Control Data Corporation Magnetic read head with offset flux gaps
US4054198A (en) * 1974-07-31 1977-10-18 Bunker Ramo Corporation Magnetic head control assembly for a magnetic passbook printing system
US3951251A (en) * 1974-07-31 1976-04-20 Bunker Ramo Corporation Document positioning means for printing apparatus
US3978964A (en) * 1974-07-31 1976-09-07 Bunker Ramo Corporation Magnetic head control assembly for a magnetic passbook printing system
JPS51147312A (en) * 1975-06-13 1976-12-17 Canon Inc Magnetic head

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167618A (en) * 1959-07-30 1965-01-26 Sperry Rand Corp Magnetic recorder head assembly
US3171107A (en) * 1961-07-03 1965-02-23 Ibm Wide-record narrow-read magnetic head
NL299035A (fr) * 1963-10-09

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431745A1 (fr) * 1978-07-20 1980-02-15 Sony Corp Appareil d'enregistrement et/ou de reproduction de carte magnetique
WO1991010230A1 (fr) * 1990-01-04 1991-07-11 Eastman Kodak Company Ensemble de tete magnetique a configuration tripode destinee a etre utilise en combinaison avec une carte magnetique a force coercitive elevee

Also Published As

Publication number Publication date
US3662122A (en) 1972-05-09

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Legal Events

Date Code Title Description
ST Notification of lapse