JPS57143764A - Head position detector - Google Patents

Head position detector

Info

Publication number
JPS57143764A
JPS57143764A JP3014481A JP3014481A JPS57143764A JP S57143764 A JPS57143764 A JP S57143764A JP 3014481 A JP3014481 A JP 3014481A JP 3014481 A JP3014481 A JP 3014481A JP S57143764 A JPS57143764 A JP S57143764A
Authority
JP
Japan
Prior art keywords
head
reference position
slit
photodetector
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.)
Granted
Application number
JP3014481A
Other languages
Japanese (ja)
Other versions
JPH0157429B2 (en
Inventor
Hideya Yokouchi
Tomotoshi Takayama
Hideo Hirao
Mitsuhiko Iida
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.)
Seiko Epson Corp
Suwa Seikosha KK
Takagi Industrial Co Ltd
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Takagi Industrial 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 Seiko Epson Corp, Suwa Seikosha KK, Takagi Industrial Co Ltd filed Critical Seiko Epson Corp
Priority to JP3014481A priority Critical patent/JPS57143764A/en
Publication of JPS57143764A publication Critical patent/JPS57143764A/en
Publication of JPH0157429B2 publication Critical patent/JPH0157429B2/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
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)

Abstract

PURPOSE:To obtain a head reference position detector with high accuracy without adjustment, by detecting a magnetic head reference position and each track position with a photodetector and a slit plate and incorporating slit plates into them. CONSTITUTION:A magnetic head 1 is located on a magnetic disc 2 and linked to an actuator 4 for head moving. Further, a moving slit 5 to detect the movement of the magnetic head 1, a fixed slit for position detection, a photodetector 77', light emitting elements 8, 8' are linked, allowing to detect the movement of the magnetic head 1 and a reference position, and an output of a head movement detection photodetector 7' is fed back to the actuator 4 to be positioned with high accuracy. With the constitution like this, an adjustment required for a conventional head reference position detector is not needed and the accuracy can also be increased.
JP3014481A 1981-03-03 1981-03-03 Head position detector Granted JPS57143764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3014481A JPS57143764A (en) 1981-03-03 1981-03-03 Head position detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3014481A JPS57143764A (en) 1981-03-03 1981-03-03 Head position detector

Publications (2)

Publication Number Publication Date
JPS57143764A true JPS57143764A (en) 1982-09-06
JPH0157429B2 JPH0157429B2 (en) 1989-12-05

Family

ID=12295563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3014481A Granted JPS57143764A (en) 1981-03-03 1981-03-03 Head position detector

Country Status (1)

Country Link
JP (1) JPS57143764A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60182568A (en) * 1984-02-29 1985-09-18 Sony Corp Position controller of information recording and/or reading means
JPS60186551U (en) * 1984-05-18 1985-12-10 株式会社三協精機製作所 Head feeding device
JPS63204571A (en) * 1987-02-19 1988-08-24 Teac Co Disk device
EP0424978A2 (en) * 1986-12-02 1991-05-02 Mitsubishi Denki Kabushiki Kaisha Optical disk drive device and information storage device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54143205A (en) * 1978-04-28 1979-11-08 Pioneer Electronic Corp Linear tracking arm position detector
JPS5564665A (en) * 1978-11-06 1980-05-15 Toshiba Corp Zero-track return system of magnetic disk unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54143205A (en) * 1978-04-28 1979-11-08 Pioneer Electronic Corp Linear tracking arm position detector
JPS5564665A (en) * 1978-11-06 1980-05-15 Toshiba Corp Zero-track return system of magnetic disk unit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60182568A (en) * 1984-02-29 1985-09-18 Sony Corp Position controller of information recording and/or reading means
JPS60186551U (en) * 1984-05-18 1985-12-10 株式会社三協精機製作所 Head feeding device
JPH0237178Y2 (en) * 1984-05-18 1990-10-08
EP0424978A2 (en) * 1986-12-02 1991-05-02 Mitsubishi Denki Kabushiki Kaisha Optical disk drive device and information storage device
JPS63204571A (en) * 1987-02-19 1988-08-24 Teac Co Disk device
JP2535873B2 (en) * 1987-02-19 1996-09-18 ティアツク株式会社 Disk device

Also Published As

Publication number Publication date
JPH0157429B2 (en) 1989-12-05

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