JPS6416924A - Detector and magnetic head for magnetic information - Google Patents

Detector and magnetic head for magnetic information

Info

Publication number
JPS6416924A
JPS6416924A JP17342487A JP17342487A JPS6416924A JP S6416924 A JPS6416924 A JP S6416924A JP 17342487 A JP17342487 A JP 17342487A JP 17342487 A JP17342487 A JP 17342487A JP S6416924 A JPS6416924 A JP S6416924A
Authority
JP
Japan
Prior art keywords
magnetic
drum
tracks
track
parts
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
JP17342487A
Other languages
Japanese (ja)
Other versions
JPH0621796B2 (en
Inventor
Hideo Hirotsu
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.)
Sun Eh Electric Co Ltd
Original Assignee
Sun Eh 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 Sun Eh Electric Co Ltd filed Critical Sun Eh Electric Co Ltd
Priority to JP62173424A priority Critical patent/JPH0621796B2/en
Publication of JPS6416924A publication Critical patent/JPS6416924A/en
Publication of JPH0621796B2 publication Critical patent/JPH0621796B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE:To improve detection accuracy by arranging magnetic detecting elements over plural tracks in the width direction of the tracks. CONSTITUTION:A rotor drum 3 is fitted on a rotary shaft 2 and a detection part 4 detects the angle of rotation of the drum 3. A ferromagnetic body which is a magnetic recording medium is stuck on the outer peripheral surface of the drum 3 by a coating method, etc., and plural tracks 5-8 are formed on the ferromagnetic body while shifting in the axial direction of the rotary shaft 2. The detection part 4 is provided with magnetic detecting elements 9-12 corresponding individually to the respective tracks 5-8. For example, the element 10 arranged to the overall width W of the track 6 is provided with elements P1-P4 and is divided into three parts 10a-10c corresponding to the respective track parts 6a-6c; when the drum 3 is rotated as shown by an arrow 13, a relatively flat detection output where drops in resistance value at bottom parts of magnetic poles are suppressed is obtained from the whole element 10, and a recording part where a magnetic pole is formed is securely detected on the track 6.
JP62173424A 1987-07-10 1987-07-10 Rotary encoder Expired - Lifetime JPH0621796B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62173424A JPH0621796B2 (en) 1987-07-10 1987-07-10 Rotary encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62173424A JPH0621796B2 (en) 1987-07-10 1987-07-10 Rotary encoder

Publications (2)

Publication Number Publication Date
JPS6416924A true JPS6416924A (en) 1989-01-20
JPH0621796B2 JPH0621796B2 (en) 1994-03-23

Family

ID=15960195

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62173424A Expired - Lifetime JPH0621796B2 (en) 1987-07-10 1987-07-10 Rotary encoder

Country Status (1)

Country Link
JP (1) JPH0621796B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02220274A (en) * 1989-02-22 1990-09-03 Y E Data Inc Data storage device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58139014A (en) * 1982-02-15 1983-08-18 Hitachi Ltd Rotary encoder
JPS59108193A (en) * 1982-12-13 1984-06-22 株式会社日立製作所 Magnetic rotary sensor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58139014A (en) * 1982-02-15 1983-08-18 Hitachi Ltd Rotary encoder
JPS59108193A (en) * 1982-12-13 1984-06-22 株式会社日立製作所 Magnetic rotary sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02220274A (en) * 1989-02-22 1990-09-03 Y E Data Inc Data storage device

Also Published As

Publication number Publication date
JPH0621796B2 (en) 1994-03-23

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