JPS57103171A - Actuator for magnetic recorder - Google Patents

Actuator for magnetic recorder

Info

Publication number
JPS57103171A
JPS57103171A JP17807280A JP17807280A JPS57103171A JP S57103171 A JPS57103171 A JP S57103171A JP 17807280 A JP17807280 A JP 17807280A JP 17807280 A JP17807280 A JP 17807280A JP S57103171 A JPS57103171 A JP S57103171A
Authority
JP
Japan
Prior art keywords
coil
end part
permanent magnet
movement range
actuator
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
JP17807280A
Other languages
Japanese (ja)
Other versions
JPS6146901B2 (en
Inventor
Yoshihiro Sato
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP17807280A priority Critical patent/JPS57103171A/en
Publication of JPS57103171A publication Critical patent/JPS57103171A/en
Publication of JPS6146901B2 publication Critical patent/JPS6146901B2/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
    • G11B5/48—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
    • G11B5/54—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 into or out of its operative position or across tracks

Landscapes

  • Moving Of Heads (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

PURPOSE:To uniform force applied to the movable coil of an actuator by increasing the length of a permanent magnet in the rectangular direction of the arc locus of a moving coil from the center part of the movement range of the movable coil to the external end part. CONSTITUTION:In a housing 6 made of a nonmagnetic material, permanent magnets 9, 10, 11, and 12 for producing magnetic fields coupled magnetically by yokes 7 and 8 corresponding to the plane coil part 5 on a coil substrate 4 are provided. Then, the permanent magnets 9, 10, 11, and 12 increase in length perpendicular to the arc locus of the coil 5, put in arc motion shown by an arrow A, from the center part of the movement range (e.g., from Q1 to Q2 as to permanent magnet 11) of the coil 5 to the external end part. Therefore, the intensity of a magnetic field at each end part of the permanent magnet becomes greater than that at the center part, thereby compensating the leakage of magnetic flux (not operating on the coil 5) at the end part. Consequently, force operating on the coil 5 is nearly uniformed between the movement range Q1Q2 of the coil 5.
JP17807280A 1980-12-18 1980-12-18 Actuator for magnetic recorder Granted JPS57103171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17807280A JPS57103171A (en) 1980-12-18 1980-12-18 Actuator for magnetic recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17807280A JPS57103171A (en) 1980-12-18 1980-12-18 Actuator for magnetic recorder

Publications (2)

Publication Number Publication Date
JPS57103171A true JPS57103171A (en) 1982-06-26
JPS6146901B2 JPS6146901B2 (en) 1986-10-16

Family

ID=16042122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17807280A Granted JPS57103171A (en) 1980-12-18 1980-12-18 Actuator for magnetic recorder

Country Status (1)

Country Link
JP (1) JPS57103171A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169406A1 (en) * 1984-07-03 1986-01-29 Siemens Nixdorf Informationssysteme Aktiengesellschaft Electrodynamic actuator for pivoting one or more transducer supporting arms for disc memories
JPS6292757A (en) * 1985-10-16 1987-04-28 Sumitomo Special Metals Co Ltd Voice coil motor
JPS6393784U (en) * 1986-12-09 1988-06-17
JPH0210781U (en) * 1988-07-05 1990-01-23
JPH0265647A (en) * 1988-08-29 1990-03-06 Hitachi Ltd Voice coil motor for magnetic disk device
WO1999004388A1 (en) * 1997-07-21 1999-01-28 Quantum Corporation Magnetic read/write head actuator assembly
JP2003045720A (en) * 2001-07-31 2003-02-14 Pioneer Electronic Corp Actuator magnet, actuator, and magnetizing unit
US7535148B2 (en) 2003-08-28 2009-05-19 University Of Southampton Electromagnetic device for converting mechanical vibrational energy into electrical energy, and manufacture thereof
EP1973105A3 (en) * 2007-03-20 2009-09-02 Shin-Etsu Chemical Co., Ltd. Voice coil motor and magnetic circuit therefor
US8194358B2 (en) 2007-03-20 2012-06-05 Shin-Etsu Chemical Co., Ltd. Voice coil motors and magnetic circuits therefor
CN104779763A (en) * 2015-03-26 2015-07-15 中国人民解放军国防科学技术大学 Two-freedom-degree voice coil driving device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005327407A (en) 2004-05-17 2005-11-24 Hitachi Global Storage Technologies Netherlands Bv Rotary disk type storage device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320908A (en) * 1976-08-11 1978-02-25 Nec Corp Magnetic head driving device
JPS5386316U (en) * 1976-12-17 1978-07-15
JPS53145606A (en) * 1977-05-23 1978-12-19 Basf Ag Positioner
JPS5437205A (en) * 1977-08-30 1979-03-19 Ricoh Co Ltd Swivel driving motors
JPS54148205A (en) * 1978-05-15 1979-11-20 Fujitsu Ltd Manufacture of moving member
JPS5524043U (en) * 1978-08-03 1980-02-16
JPS5567975A (en) * 1978-11-14 1980-05-22 Nippon Telegr & Teleph Corp <Ntt> Head positioning unit
US4331991A (en) * 1980-07-02 1982-05-25 Storage Technology Corporation Head actuator for magnetic disk drive

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5524043B2 (en) * 1974-01-23 1980-06-26

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320908A (en) * 1976-08-11 1978-02-25 Nec Corp Magnetic head driving device
JPS5386316U (en) * 1976-12-17 1978-07-15
JPS53145606A (en) * 1977-05-23 1978-12-19 Basf Ag Positioner
JPS5437205A (en) * 1977-08-30 1979-03-19 Ricoh Co Ltd Swivel driving motors
JPS54148205A (en) * 1978-05-15 1979-11-20 Fujitsu Ltd Manufacture of moving member
JPS5524043U (en) * 1978-08-03 1980-02-16
JPS5567975A (en) * 1978-11-14 1980-05-22 Nippon Telegr & Teleph Corp <Ntt> Head positioning unit
US4331991A (en) * 1980-07-02 1982-05-25 Storage Technology Corporation Head actuator for magnetic disk drive

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169406A1 (en) * 1984-07-03 1986-01-29 Siemens Nixdorf Informationssysteme Aktiengesellschaft Electrodynamic actuator for pivoting one or more transducer supporting arms for disc memories
JPS6292757A (en) * 1985-10-16 1987-04-28 Sumitomo Special Metals Co Ltd Voice coil motor
JPH0568941B2 (en) * 1985-10-16 1993-09-30 Sumitomo Spec Metals
JPS6393784U (en) * 1986-12-09 1988-06-17
JPH0210781U (en) * 1988-07-05 1990-01-23
JPH0265647A (en) * 1988-08-29 1990-03-06 Hitachi Ltd Voice coil motor for magnetic disk device
WO1999004388A1 (en) * 1997-07-21 1999-01-28 Quantum Corporation Magnetic read/write head actuator assembly
JP2003045720A (en) * 2001-07-31 2003-02-14 Pioneer Electronic Corp Actuator magnet, actuator, and magnetizing unit
JP4522027B2 (en) * 2001-07-31 2010-08-11 パイオニア株式会社 Magnet for actuator, actuator, and magnetizing device
US7535148B2 (en) 2003-08-28 2009-05-19 University Of Southampton Electromagnetic device for converting mechanical vibrational energy into electrical energy, and manufacture thereof
EP1973105A3 (en) * 2007-03-20 2009-09-02 Shin-Etsu Chemical Co., Ltd. Voice coil motor and magnetic circuit therefor
US8194358B2 (en) 2007-03-20 2012-06-05 Shin-Etsu Chemical Co., Ltd. Voice coil motors and magnetic circuits therefor
CN104779763A (en) * 2015-03-26 2015-07-15 中国人民解放军国防科学技术大学 Two-freedom-degree voice coil driving device

Also Published As

Publication number Publication date
JPS6146901B2 (en) 1986-10-16

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