DE3478524D1 - Magnetic recording and/or reproducing element - Google Patents

Magnetic recording and/or reproducing element

Info

Publication number
DE3478524D1
DE3478524D1 DE8484308898T DE3478524T DE3478524D1 DE 3478524 D1 DE3478524 D1 DE 3478524D1 DE 8484308898 T DE8484308898 T DE 8484308898T DE 3478524 T DE3478524 T DE 3478524T DE 3478524 D1 DE3478524 D1 DE 3478524D1
Authority
DE
Germany
Prior art keywords
magnetic recording
reproducing element
reproducing
recording
magnetic
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
DE8484308898T
Other languages
English (en)
Inventor
Keiji Segawa
Hirofumi Koopo Shonan O Imaoka
Hisao Kinjo
Toshiya Sakurai
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Application granted granted Critical
Publication of DE3478524D1 publication Critical patent/DE3478524D1/de
Expired 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
    • G11B5/1871—Shaping or contouring of the transducing or guiding surface
    • 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
    • G11B5/1274—Structure or manufacture of heads, e.g. inductive with "composite" cores, i.e. cores composed in some parts of magnetic particles and in some other parts of magnetic metal layers
    • G11B5/1276—Structure or manufacture of heads, e.g. inductive with "composite" cores, i.e. cores composed in some parts of magnetic particles and in some other parts of magnetic metal layers including at least one magnetic thin film
    • 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
    • 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
    • G11B5/255—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 protection against wear
    • 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
    • G11B5/3106—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing where the integrated or assembled structure comprises means for conditioning against physical detrimental influence, e.g. wear, contamination
    • 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
    • G11B5/58—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 with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Record Carriers (AREA)
  • Magnetic Heads (AREA)
DE8484308898T 1983-12-20 1984-12-19 Magnetic recording and/or reproducing element Expired DE3478524D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58240697A JPS60131604A (ja) 1983-12-20 1983-12-20 磁気記録再生素子

Publications (1)

Publication Number Publication Date
DE3478524D1 true DE3478524D1 (en) 1989-07-06

Family

ID=17063352

Family Applications (2)

Application Number Title Priority Date Filing Date
DE8484308898T Expired DE3478524D1 (en) 1983-12-20 1984-12-19 Magnetic recording and/or reproducing element
DE198484308898T Pending DE146410T1 (de) 1983-12-20 1984-12-19 Magnetisches aufnahme- oder wiedergabeelement.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE198484308898T Pending DE146410T1 (de) 1983-12-20 1984-12-19 Magnetisches aufnahme- oder wiedergabeelement.

Country Status (4)

Country Link
US (1) US4675765A (de)
EP (1) EP0146410B1 (de)
JP (1) JPS60131604A (de)
DE (2) DE3478524D1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8501200A (nl) * 1985-04-26 1986-11-17 Philips Nv Magneetkop voor loodrechte registratie.
US5055959A (en) * 1990-01-09 1991-10-08 Digital Equipment Corporation Tape head with low spacing loss produced by narrow and wide wear regions
US5323742A (en) * 1993-03-26 1994-06-28 Fuji Oozx, Inc. Shim structure in use for valve tappet of internal combustion engine
US5615069A (en) * 1995-06-07 1997-03-25 Seagate Technology, Inc. Thin-film transducer design for undershoot reduction
GB9720061D0 (en) 1997-09-19 1997-11-19 Crosfield Joseph & Sons Metal compounds as phosphate binders
MY157620A (en) 2006-01-31 2016-06-30 Cytochroma Dev Inc A granular material of a solid water-soluble mixed metal compound capable of binding phosphate
GB0714670D0 (en) 2007-07-27 2007-09-05 Ineos Healthcare Ltd Use
GB0720220D0 (en) 2007-10-16 2007-11-28 Ineos Healthcare Ltd Compound
GB0913525D0 (en) 2009-08-03 2009-09-16 Ineos Healthcare Ltd Method

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4170059A (en) * 1975-09-22 1979-10-09 Ampex Corporation Method of manufacturing a magnetic transducer for narrow track recording and playback
JPS5432310A (en) * 1977-08-16 1979-03-09 Victor Co Of Japan Ltd Magnetic head
JPS5460913A (en) * 1977-10-24 1979-05-16 Hitachi Ltd Magnetic head
JPS55113119A (en) * 1979-02-21 1980-09-01 Hitachi Ltd Magnetic head
US4390916A (en) * 1980-11-20 1983-06-28 International Business Machines Corporation Single track magnetic head assembly
US4475137A (en) * 1981-05-11 1984-10-02 Sanyo Electric Co., Ltd. Magnetic transducer
JPS57203214A (en) * 1981-06-09 1982-12-13 Sony Corp Magnetic head
JPS58130419A (ja) * 1982-01-29 1983-08-03 Victor Co Of Japan Ltd 複合型磁気ヘツドコア
JPS58164012A (ja) * 1982-03-19 1983-09-28 Sanyo Electric Co Ltd 垂直型磁気ヘツド
JPS5979416A (ja) * 1982-10-28 1984-05-08 Seiko Epson Corp 磁気記録装置
JPH0628082B2 (ja) * 1983-05-17 1994-04-13 三菱電機株式会社 磁気ヘッド

Also Published As

Publication number Publication date
EP0146410B1 (de) 1989-05-31
EP0146410A3 (en) 1987-01-07
US4675765A (en) 1987-06-23
JPS60131604A (ja) 1985-07-13
DE146410T1 (de) 1985-10-10
EP0146410A2 (de) 1985-06-26

Similar Documents

Publication Publication Date Title
DE3479066D1 (en) Magnetic recording medium
GB2137532B (en) Magnetic recording medium
GB2150860B (en) Magnetic recording medium
DE3479615D1 (en) Magnetic recording medium
EP0148378A3 (en) Magnetic recording and playback apparatus
EP0137949A3 (en) Magnetic recording medium
GB2148149B (en) Magnetic recording medium
DE3380832D1 (en) Magnetic recording and reproducing system
DE3469623D1 (en) Magnetic recording disks
DE3464977D1 (en) Magnetic recording medium
GB8432627D0 (en) Perpendicular magnetic recording medium
GB2098376B (en) Magnetic recording and/or reproducing apparatus
DE3468570D1 (en) Magnetic recording medium
GB2149187B (en) Magnetic recording and reproducing apparatus
DE3468569D1 (en) Magnetic recording medium
DE3472321D1 (en) Magnetic recording medium
GB2148944B (en) Magnetic recording medium
DE3476711D1 (en) Magnetic recording medium
EP0125150A3 (en) Magnetic recording medium
GB2096817B (en) Magnetic recording and/or reproducing apparatus
GB2145939B (en) Magnetic recording medium
DE3478524D1 (en) Magnetic recording and/or reproducing element
GB2150859B (en) Magnetic recording medium
GB2146921B (en) Magnetic recording medium
DE3468952D1 (en) Magnetic recording disk

Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee