DE3575032D1 - Magnetkopf. - Google Patents

Magnetkopf.

Info

Publication number
DE3575032D1
DE3575032D1 DE8585113906T DE3575032T DE3575032D1 DE 3575032 D1 DE3575032 D1 DE 3575032D1 DE 8585113906 T DE8585113906 T DE 8585113906T DE 3575032 T DE3575032 T DE 3575032T DE 3575032 D1 DE3575032 D1 DE 3575032D1
Authority
DE
Germany
Prior art keywords
magnetic head
magnetic
head
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 - Fee Related
Application number
DE8585113906T
Other languages
English (en)
Inventor
Yoshihiko Kawai
Kazuaki Koyama
Isao Yasuda
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Application granted granted Critical
Publication of DE3575032D1 publication Critical patent/DE3575032D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B5/23—Gap features
    • G11B5/232—Manufacture of gap
    • 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
    • G11B5/1475—Assembling or shaping of elements
    • 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
    • G11B5/21—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being of ferrous sheet metal or other magnetic layers
DE8585113906T 1984-11-01 1985-10-31 Magnetkopf. Expired - Fee Related DE3575032D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59230554A JPS61110317A (ja) 1984-11-01 1984-11-01 磁気ヘツド

Publications (1)

Publication Number Publication Date
DE3575032D1 true DE3575032D1 (de) 1990-02-01

Family

ID=16909573

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585113906T Expired - Fee Related DE3575032D1 (de) 1984-11-01 1985-10-31 Magnetkopf.

Country Status (6)

Country Link
US (1) US4811147A (de)
EP (1) EP0181577B1 (de)
JP (1) JPS61110317A (de)
CN (1) CN85107702A (de)
CA (1) CA1259407A (de)
DE (1) DE3575032D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5245492A (en) * 1989-11-28 1993-09-14 Matsushita Electric Industrial Co., Ltd. Magnetic head
US5224001A (en) * 1989-11-29 1993-06-29 Matsushita Electric Industrial Co., Ltd. Magnetic head
JP3070328B2 (ja) * 1993-03-22 2000-07-31 松下電器産業株式会社 繊維状固体電解質成形体
JP4919221B2 (ja) * 2006-04-19 2012-04-18 株式会社タイキ シート化粧料包装体

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB801570A (en) * 1956-02-17 1958-09-17 British Thomson Houston Co Ltd Semi-conducting glasses
GB1174475A (en) * 1967-06-22 1969-12-17 English Electric Co Ltd Glass-Ceramics.
US3562444A (en) * 1968-02-29 1971-02-09 Ibm Recording head assembly
GB1511747A (en) * 1974-07-24 1978-05-24 Jenaer Glaswerk Schott & Gen Optical glass
US4115827A (en) * 1975-09-22 1978-09-19 Ampex Corporation Magnetic transducer for narrow track recording and playback
US4475137A (en) * 1981-05-11 1984-10-02 Sanyo Electric Co., Ltd. Magnetic transducer
JPS592224A (ja) * 1982-06-25 1984-01-07 Mitsubishi Electric Corp 複合形磁気ヘツドの製造方法
US4455384A (en) * 1982-12-08 1984-06-19 The United States Of America As Represented By The United States Department Of Energy Chemically durable nitrogen containing phosphate glasses useful for sealing to metals
US4602307A (en) * 1983-03-11 1986-07-22 Mitsubishi Denki Kabushiki Kaisha Compound type magnetic head
NL8401383A (nl) * 1983-07-04 1985-02-01 Philips Nv Magneetkop en werkwijze voor zijn vervaardiging.
US4544974A (en) * 1983-10-20 1985-10-01 Eastman Kodak Company Alumina glass composition and magnetic head incorporating same

Also Published As

Publication number Publication date
US4811147A (en) 1989-03-07
CA1259407A (en) 1989-09-12
JPS61110317A (ja) 1986-05-28
EP0181577A2 (de) 1986-05-21
EP0181577B1 (de) 1989-12-27
EP0181577A3 (en) 1987-02-04
JPH0477963B2 (de) 1992-12-09
CN85107702A (zh) 1986-09-24

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee