JPS554706A - Production of magnetic head - Google Patents

Production of magnetic head

Info

Publication number
JPS554706A
JPS554706A JP7537078A JP7537078A JPS554706A JP S554706 A JPS554706 A JP S554706A JP 7537078 A JP7537078 A JP 7537078A JP 7537078 A JP7537078 A JP 7537078A JP S554706 A JPS554706 A JP S554706A
Authority
JP
Japan
Prior art keywords
mask
track
laser light
block
production
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.)
Pending
Application number
JP7537078A
Other languages
Japanese (ja)
Inventor
Masahide Suenaga
Noboru Shimizu
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 JP7537078A priority Critical patent/JPS554706A/en
Publication of JPS554706A publication Critical patent/JPS554706A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To process the track part of a narrow track head with a high precision by irradiating laser light after forming a specific mask on the surface of a part which should become a track.
CONSTITUTION: Metallic thin film mask pattern 4 which consists of metal, such as Al, having a high reflection factor for laser light is formed on the surface of ferrite core block 3, where gap 1 an winding window 2 are formed, by the vacuum evaporation method and the chemical etching method after photo resistor pattern formation. Next, the Nd:YAG laser light which is focused to have a spot diameter of approximately 10 μm and is oscillated by Q switch is irradiated to part 5, which is not covered with mask 4, and the part around it, and simultaneously, block 3 is moved in a fixed speed. Thus, mask 4 is removed after part 6 corresponding to the cut groove is formed in block 3, and the surface of track part 7 is exposed.
COPYRIGHT: (C)1980,JPO&Japio
JP7537078A 1978-06-23 1978-06-23 Production of magnetic head Pending JPS554706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7537078A JPS554706A (en) 1978-06-23 1978-06-23 Production of magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7537078A JPS554706A (en) 1978-06-23 1978-06-23 Production of magnetic head

Publications (1)

Publication Number Publication Date
JPS554706A true JPS554706A (en) 1980-01-14

Family

ID=13574251

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7537078A Pending JPS554706A (en) 1978-06-23 1978-06-23 Production of magnetic head

Country Status (1)

Country Link
JP (1) JPS554706A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156345A (en) * 1981-03-18 1982-09-27 Nippon Steel Corp Grain regulating refinement equipments of obtaining various king of grain products by treating iron byproducts
US5718036A (en) * 1994-05-10 1998-02-17 Mitsubishi Denki Kabushiki Kaisha Method for manufacturing a magnetic head

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5250220A (en) * 1975-10-20 1977-04-22 Hitachi Ltd Producing magnetic head
JPS5312316A (en) * 1976-07-20 1978-02-03 Matsushita Electric Ind Co Ltd Production of magnetic head

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5250220A (en) * 1975-10-20 1977-04-22 Hitachi Ltd Producing magnetic head
JPS5312316A (en) * 1976-07-20 1978-02-03 Matsushita Electric Ind Co Ltd Production of magnetic head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156345A (en) * 1981-03-18 1982-09-27 Nippon Steel Corp Grain regulating refinement equipments of obtaining various king of grain products by treating iron byproducts
US5718036A (en) * 1994-05-10 1998-02-17 Mitsubishi Denki Kabushiki Kaisha Method for manufacturing a magnetic head

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