JPS5512654B2 - - Google Patents

Info

Publication number
JPS5512654B2
JPS5512654B2 JP4262673A JP4262673A JPS5512654B2 JP S5512654 B2 JPS5512654 B2 JP S5512654B2 JP 4262673 A JP4262673 A JP 4262673A JP 4262673 A JP4262673 A JP 4262673A JP S5512654 B2 JPS5512654 B2 JP S5512654B2
Authority
JP
Japan
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
JP4262673A
Other versions
JPS4919810A (ja
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 filed Critical
Publication of JPS4919810A publication Critical patent/JPS4919810A/ja
Publication of JPS5512654B2 publication Critical patent/JPS5512654B2/ja
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
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49055—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
JP4262673A 1972-04-15 1973-04-14 Expired JPS5512654B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1747772A GB1376522A (en) 1972-04-15 1972-04-15 Manufacture of magnetic transducing heads

Publications (2)

Publication Number Publication Date
JPS4919810A JPS4919810A (ja) 1974-02-21
JPS5512654B2 true JPS5512654B2 (ja) 1980-04-03

Family

ID=10095856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4262673A Expired JPS5512654B2 (ja) 1972-04-15 1973-04-14

Country Status (5)

Country Link
US (1) US3854199A (ja)
JP (1) JPS5512654B2 (ja)
DE (1) DE2318322C3 (ja)
GB (1) GB1376522A (ja)
NL (1) NL160412C (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4044392A (en) * 1975-08-14 1977-08-23 International Business Machines Corporation Process for making a read-while-write tape head and the product made thereby
JPS55111929A (en) * 1979-02-21 1980-08-29 Ricoh Co Ltd Automatic focusing device
EP0096570B1 (en) * 1982-06-05 1988-08-24 Olympus Optical Co., Ltd. An optical system focus-state detector
JPS59139519A (ja) * 1983-01-31 1984-08-10 松下電工株式会社 反射型光電スイツチ
JPS59180475A (ja) * 1983-03-31 1984-10-13 Matsushita Electric Works Ltd 反射型光電スイツチ
JPS6017414A (ja) * 1983-07-08 1985-01-29 Mitsubishi Electric Corp 焦点検出装置
US4801963A (en) * 1985-12-18 1989-01-31 Canon Kabushiki Kaisha Focus detecting system
JPH079126Y2 (ja) * 1986-11-17 1995-03-06 旭光学工業株式会社 オートフォーカス用投光器
US5305047A (en) * 1988-10-11 1994-04-19 Canon Kabushiki Kaisha Pattern projector having a multi-portion projection lens and camera comprising the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885488A (en) * 1952-09-30 1959-05-05 Rca Corp Magnetic record transducer
US2984709A (en) * 1954-10-01 1961-05-16 Rca Corp Magnetic head construction
US3414971A (en) * 1964-06-09 1968-12-10 Honeywell Inc Method of fabricating read-after-write heads
FR1543786A (fr) * 1966-12-28 Ibm Transducteur magnétique

Also Published As

Publication number Publication date
NL160412B (nl) 1979-05-15
GB1376522A (en) 1974-12-04
JPS4919810A (ja) 1974-02-21
DE2318322B2 (ja) 1980-04-10
NL160412C (nl) 1979-10-15
US3854199A (en) 1974-12-17
DE2318322C3 (de) 1980-12-18
NL7305021A (ja) 1973-10-17
DE2318322A1 (de) 1973-10-25

Similar Documents

Publication Publication Date Title
JPS5512654B2 (ja)
JPS5231975B2 (ja)
FR2207643B1 (ja)
JPS513921B2 (ja)
JPS4913178U (ja)
JPS4949024A (ja)
JPS49101666U (ja)
JPS5229152Y2 (ja)
FR2205823A5 (ja)
JPS5124390Y2 (ja)
JPS4935689U (ja)
JPS4973477U (ja)
JPS4976765A (ja)
CH562478A5 (ja)
CH574845A5 (ja)
CH582211A5 (ja)
CH576845A5 (ja)
CH576953A5 (ja)
CH578464A5 (ja)
CH570032A5 (ja)
AU480156A (ja)
CH579003A5 (ja)
CH579257A5 (ja)
CH579551A5 (ja)
CH580307A5 (ja)