GB1357400A - Magnetic recording and reproducing apparatus - Google Patents

Magnetic recording and reproducing apparatus

Info

Publication number
GB1357400A
GB1357400A GB5102971A GB5102971A GB1357400A GB 1357400 A GB1357400 A GB 1357400A GB 5102971 A GB5102971 A GB 5102971A GB 5102971 A GB5102971 A GB 5102971A GB 1357400 A GB1357400 A GB 1357400A
Authority
GB
United Kingdom
Prior art keywords
reading
strips
magnetic
head assembly
yoke
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.)
Expired
Application number
GB5102971A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Priority to GB5102971A priority Critical patent/GB1357400A/en
Priority to DE19722242095 priority patent/DE2242095A1/en
Priority to FR7234258A priority patent/FR2158196B1/fr
Priority to JP10728272A priority patent/JPS5529489B2/ja
Publication of GB1357400A publication Critical patent/GB1357400A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
    • 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
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4969—Details for track selection or addressing

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

1357400 Magnetic heads INTERNATIONAL BUSINESS MACHINES CORP 3 Nov 1971 51029/71 Heading G5R A multi-element head assembly 10 comprises a magnetic yoke underlay portion 12, e.g. a polished ferrite substrate or an alloy film on glass, a series of conductive strips 17 (Fig. 2) each having four terminal connections 13, 14, 15, 16 such as the film strips shown (Fig. 1), and each having yoke overlay/closure portions 18, 19 whereby magnetic circuits with gaps 20 are formed around each strip 17. In operation, "write current" is passed through strips 17 via the outer terminals 13, 16 so that each head element 11 produces a track width of magnitude d w , whereas in reading, connection is made to each set of inner terminals 14, 15, and the effective reading width is d r . Cross-talk due to faulty positioning of the head assembly when reading a record is thus reduced.
GB5102971A 1971-11-03 1971-11-03 Magnetic recording and reproducing apparatus Expired GB1357400A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB5102971A GB1357400A (en) 1971-11-03 1971-11-03 Magnetic recording and reproducing apparatus
DE19722242095 DE2242095A1 (en) 1971-11-03 1972-08-26 MAGNETIC HEAD
FR7234258A FR2158196B1 (en) 1971-11-03 1972-09-20
JP10728272A JPS5529489B2 (en) 1971-11-03 1972-10-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5102971A GB1357400A (en) 1971-11-03 1971-11-03 Magnetic recording and reproducing apparatus

Publications (1)

Publication Number Publication Date
GB1357400A true GB1357400A (en) 1974-06-19

Family

ID=10458359

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5102971A Expired GB1357400A (en) 1971-11-03 1971-11-03 Magnetic recording and reproducing apparatus

Country Status (4)

Country Link
JP (1) JPS5529489B2 (en)
DE (1) DE2242095A1 (en)
FR (1) FR2158196B1 (en)
GB (1) GB1357400A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009066088A1 (en) * 2007-11-22 2009-05-28 Charles Frederick James Barnes Magnetic write head

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5165613A (en) * 1974-12-04 1976-06-07 Hitachi Ltd TASOSHIGATAHAKUMAKUHETSUDO
FR2480015A1 (en) * 1980-04-02 1981-10-09 Cii Honeywell Bull MAGNETIC MAGNETIC TRANSDUCER WITH HIGH VARIABLE DIMENSION FOR READING AND WRITING INFORMATION CONTAINED IN A MAGNETIC MEDIUM
DE3204183A1 (en) * 1982-02-06 1983-08-11 Robert Bosch Gmbh, 7000 Stuttgart THICK LAYER MAGNETIC HEAD

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954547A (en) * 1956-02-16 1960-09-27 Ibm Selector for a multiple track record of a magnetic memory system
FR1520060A (en) * 1967-04-20 1968-04-05 Sperry Rand Corp Magnetic head in plated wire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009066088A1 (en) * 2007-11-22 2009-05-28 Charles Frederick James Barnes Magnetic write head

Also Published As

Publication number Publication date
FR2158196B1 (en) 1976-01-30
JPS5529489B2 (en) 1980-08-04
FR2158196A1 (en) 1973-06-15
DE2242095A1 (en) 1973-05-10
JPS4858816A (en) 1973-08-17

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee