JPS5712409A - Thin-film magnetic head - Google Patents

Thin-film magnetic head

Info

Publication number
JPS5712409A
JPS5712409A JP8509880A JP8509880A JPS5712409A JP S5712409 A JPS5712409 A JP S5712409A JP 8509880 A JP8509880 A JP 8509880A JP 8509880 A JP8509880 A JP 8509880A JP S5712409 A JPS5712409 A JP S5712409A
Authority
JP
Japan
Prior art keywords
layer
coil
magnetic substance
magnetic head
common earth
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
JP8509880A
Other languages
Japanese (ja)
Other versions
JPS645368B2 (en
Inventor
Masamichi Yamada
Isao Oshima
Masakatsu Saito
Takao Ketori
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8509880A priority Critical patent/JPS5712409A/en
Publication of JPS5712409A publication Critical patent/JPS5712409A/en
Publication of JPS645368B2 publication Critical patent/JPS645368B2/ja
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
    • G11B5/31—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
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)

Abstract

PURPOSE:Not only to increase the heat dissipation effect but to reduce the electric resistance of a coil part and thus to realize the close tracks of a multitrack thin-film magnetic head, by providing a common earth conductor layer of a high heat conductivity under a lower magnetic substance and connecting an end of a signal coil to to the lower magnetic substance. CONSTITUTION:A common earth conductor layer 15 having a high heat conductivity is provided on a substrate 14, and a lower magnetic substance layer 1b and an insulator layer 16b of a prescribed pattern are laminated successively on the layer 15. An electric conductor is provided on the lsminated layer, and then a bonding pad 5, a signal coil 4 and a common earth connection part 12 are formed by means of a photoetching technique. (The part 12, an end of the coil 4 is connected electrically to the layer 1b.) An insulator layer 16a is provided to cover the coil 4, and an upper magnetic substance layer 1a is formed on the layer 16a to obtain a magnetic head. The signal current flows in order in a route of the pad 5, the coil 4, the part 12, the layer 1b and the layer 15.
JP8509880A 1980-06-25 1980-06-25 Thin-film magnetic head Granted JPS5712409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8509880A JPS5712409A (en) 1980-06-25 1980-06-25 Thin-film magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8509880A JPS5712409A (en) 1980-06-25 1980-06-25 Thin-film magnetic head

Publications (2)

Publication Number Publication Date
JPS5712409A true JPS5712409A (en) 1982-01-22
JPS645368B2 JPS645368B2 (en) 1989-01-30

Family

ID=13849128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8509880A Granted JPS5712409A (en) 1980-06-25 1980-06-25 Thin-film magnetic head

Country Status (1)

Country Link
JP (1) JPS5712409A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6052912A (en) * 1983-09-02 1985-03-26 Canon Electronics Inc Thin film magnetic head
US5545240A (en) * 1989-04-21 1996-08-13 Asahi Kogaku Kogyo Kabushiki Kaisha Deodorants and gas filters therefor
US6071527A (en) * 1996-04-10 2000-06-06 Asahi Kogaku Kogyo Kabushiki Kaisha Deodorant microphone cover and method of producing the same
WO2004097805A1 (en) * 2003-04-30 2004-11-11 Fujitsu Limited Thin-film magnetic head, production method therefor, and magnetic storage unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50161223A (en) * 1974-06-18 1975-12-27
JPS5199008A (en) * 1974-12-31 1976-09-01 Matsushita Electric Ind Co Ltd JIKI HETSUDO

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50161223A (en) * 1974-06-18 1975-12-27
JPS5199008A (en) * 1974-12-31 1976-09-01 Matsushita Electric Ind Co Ltd JIKI HETSUDO

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6052912A (en) * 1983-09-02 1985-03-26 Canon Electronics Inc Thin film magnetic head
US5545240A (en) * 1989-04-21 1996-08-13 Asahi Kogaku Kogyo Kabushiki Kaisha Deodorants and gas filters therefor
US5567231A (en) * 1989-04-21 1996-10-22 Asahi Kogaku Kogyo Kabushiki Kaisha Deodorants, deodorant sheets, filter sheets and functional papers as well as filtering mediums for exhaust gas
US6071527A (en) * 1996-04-10 2000-06-06 Asahi Kogaku Kogyo Kabushiki Kaisha Deodorant microphone cover and method of producing the same
WO2004097805A1 (en) * 2003-04-30 2004-11-11 Fujitsu Limited Thin-film magnetic head, production method therefor, and magnetic storage unit

Also Published As

Publication number Publication date
JPS645368B2 (en) 1989-01-30

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