ES500235A0 - Dispositivo de cabeza magnetica de registro y de lectura de datos - Google Patents

Dispositivo de cabeza magnetica de registro y de lectura de datos

Info

Publication number
ES500235A0
ES500235A0 ES500235A ES500235A ES500235A0 ES 500235 A0 ES500235 A0 ES 500235A0 ES 500235 A ES500235 A ES 500235A ES 500235 A ES500235 A ES 500235A ES 500235 A0 ES500235 A0 ES 500235A0
Authority
ES
Spain
Prior art keywords
recording head
magnetic recording
data reading
reading
data
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
Application number
ES500235A
Other languages
English (en)
Other versions
ES8202446A1 (es
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.)
EUROP COMPOSANTS ELECTRON
Original Assignee
EUROP COMPOSANTS ELECTRON
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 EUROP COMPOSANTS ELECTRON filed Critical EUROP COMPOSANTS ELECTRON
Publication of ES8202446A1 publication Critical patent/ES8202446A1/es
Publication of ES500235A0 publication Critical patent/ES500235A0/es
Granted 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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
    • G11B5/2452—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track where the dimensions of the effective gap are controlled

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
ES500235A 1980-03-11 1981-03-10 Dispositivo de cabeza magnetica de registro y de lectura de datos Granted ES500235A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8005418A FR2478357A1 (fr) 1980-03-11 1980-03-11 Tete magnetique d'enregistrement et de lecture de donnees magnetiques, a largeur de piste variable

Publications (2)

Publication Number Publication Date
ES8202446A1 ES8202446A1 (es) 1982-01-16
ES500235A0 true ES500235A0 (es) 1982-01-16

Family

ID=9239539

Family Applications (2)

Application Number Title Priority Date Filing Date
ES500235A Granted ES500235A0 (es) 1980-03-11 1981-03-10 Dispositivo de cabeza magnetica de registro y de lectura de datos
ES502314A Granted ES502314A0 (es) 1980-03-11 1981-05-19 Procedimiento de fabricacion de cabezas magneticas de regis-tro y de lectura de datos

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES502314A Granted ES502314A0 (es) 1980-03-11 1981-05-19 Procedimiento de fabricacion de cabezas magneticas de regis-tro y de lectura de datos

Country Status (6)

Country Link
US (1) US4405959A (es)
EP (1) EP0035943B1 (es)
JP (1) JPS56134310A (es)
DE (1) DE3164649D1 (es)
ES (2) ES500235A0 (es)
FR (1) FR2478357A1 (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57189325A (en) * 1981-05-18 1982-11-20 Toshiba Corp Composite magnetic head
EP0110050B1 (en) * 1982-10-01 1988-06-01 Mitsubishi Denki Kabushiki Kaisha Disc drive for flexible discs with different track widths
NL8302093A (nl) * 1983-06-13 1985-01-02 Philips Nv Magnetische overdrachtskop voor het schrijven van informatie op hoogcoercitieve registratie media.
US4819107A (en) * 1984-08-29 1989-04-04 Irwin Magnetic Systems, Inc. Magnetic transducer head structure
KR860002082A (ko) * 1984-08-29 1986-03-26 프랑시스 글로리 자기 변환기 헤드 구조물
JPH0831204B2 (ja) * 1985-10-18 1996-03-27 富士通株式会社 薄膜磁気ヘツド
US4821126A (en) * 1985-10-22 1989-04-11 Fuji Photo Film Co., Ltd. Magnetic recording method involving core pieces of different thickness
US4849841A (en) * 1987-04-10 1989-07-18 Irwin Magnetic Systems, Inc. Transducer head core structure with recessed magnetic closures
US4883950A (en) * 1987-05-23 1989-11-28 The Furukawa Electric Co., Ltd. Composite magnetic and optical head
US5007158A (en) * 1988-02-09 1991-04-16 Sanyo Electric Co., Ltd. Method of manufacturing magnetic heads
JP2600841B2 (ja) * 1988-09-02 1997-04-16 三菱電機株式会社 磁気ヘッド
US5706145A (en) * 1994-08-25 1998-01-06 Hindman; Carl L. Apparatus and methods for audio tape indexing with data signals recorded in the guard band
US5734533A (en) * 1996-05-15 1998-03-31 Read-Rite Corporation Dual gap magnetic head and method of making the same
JPH10247305A (ja) * 1997-03-03 1998-09-14 Sanyo Electric Co Ltd 複合型薄膜磁気ヘッドの製造方法
GB0420443D0 (en) * 2004-09-14 2004-10-20 Ncr Int Inc A card reader

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947592A (en) * 1955-08-25 1960-08-02 Sperry Rand Corp High frequency magnetic transducers
GB831492A (en) * 1955-09-06 1960-03-30 Ibm Improvements in magnetic transducers
GB900652A (en) * 1957-11-06 1962-07-11 Emi Ltd Improvements in or relating to magnetic transducing heads
US3209078A (en) * 1960-12-20 1965-09-28 Siemens Ag Magnetic head equipped with a hall generator
DE1167053B (de) * 1961-10-17 1964-04-02 Telefunken Patent Loeschkopf zum getrennten Loeschen von zwei Tonspuren bei Zweispurbetrieb und zum Loeschen von Vollspuraufzeichnungen
US3353168A (en) * 1964-04-09 1967-11-14 Potter Instrument Co Inc Wide-record narrow-read magnetic head
NL7210322A (es) * 1972-07-26 1974-01-29
JPS5838843B2 (ja) * 1973-11-20 1983-08-25 ティーディーケイ株式会社 磁気記録再生方式
US4085430A (en) * 1974-01-24 1978-04-18 U.S. Philips Corporation Thin film magnetic head with a gap formed between a loop shaped core part and a bridging core part
JPS51147312A (en) * 1975-06-13 1976-12-17 Canon Inc Magnetic head
JPS5235616A (en) * 1975-09-16 1977-03-18 Alps Nootoronikusu Kk Magnetic head
GB1500593A (en) * 1976-10-19 1978-02-08 Data Recording Instr Co Magnetic transducing heads
JPS545417A (en) * 1977-06-14 1979-01-16 Tdk Corp Magnetic head
JPS5842579A (ja) * 1981-09-09 1983-03-12 株式会社日立製作所 速度帰還形油圧エレベ−タ装置

Also Published As

Publication number Publication date
ES8202446A1 (es) 1982-01-16
US4405959A (en) 1983-09-20
DE3164649D1 (en) 1984-08-16
ES8206074A1 (es) 1982-07-16
JPS56134310A (en) 1981-10-21
FR2478357A1 (fr) 1981-09-18
EP0035943A1 (fr) 1981-09-16
ES502314A0 (es) 1982-07-16
EP0035943B1 (fr) 1984-07-11
FR2478357B1 (es) 1984-04-06

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971001