JPS57158512A - Magnetic linear encoder - Google Patents

Magnetic linear encoder

Info

Publication number
JPS57158512A
JPS57158512A JP4477281A JP4477281A JPS57158512A JP S57158512 A JPS57158512 A JP S57158512A JP 4477281 A JP4477281 A JP 4477281A JP 4477281 A JP4477281 A JP 4477281A JP S57158512 A JPS57158512 A JP S57158512A
Authority
JP
Japan
Prior art keywords
pitch
substrate
magnetic
detector
linear encoder
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.)
Pending
Application number
JP4477281A
Other languages
Japanese (ja)
Inventor
Tetsuo Muramatsu
Shuhei Tsuchimoto
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP4477281A priority Critical patent/JPS57158512A/en
Publication of JPS57158512A publication Critical patent/JPS57158512A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
    • G01D5/2013—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils by a movable ferromagnetic element, e.g. a core

Abstract

PURPOSE:To elevate image resolution, by shifting a pitch of a magnetized body and a pitch of a magnetic reluctance effect type element of a detector, by making them have a prescribed relation, in a magnetic linear encoder for relatively moving a magnetized body substrate and the detector. CONSTITUTION:On a magnetic medium substrate 1, a high magnetic force ferromagnetic thin film 2 patterned by a pitch (lambda) and magnetized in the X direction is provided. On the other hand, on a detector substrate 3 moving relatively with the substrate 1, a high magnetic force ferromagnetic film 4 and a uniaxial and anisotropic magnetic reluctance effect type element 5 are formed by a pitch of (m+1/n).lambda(m and n are integers). Also, each element 5 is magnetically biased by a leakage magnetic field of the high magnetic force ferromagnetic film 4.
JP4477281A 1981-03-25 1981-03-25 Magnetic linear encoder Pending JPS57158512A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4477281A JPS57158512A (en) 1981-03-25 1981-03-25 Magnetic linear encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4477281A JPS57158512A (en) 1981-03-25 1981-03-25 Magnetic linear encoder

Publications (1)

Publication Number Publication Date
JPS57158512A true JPS57158512A (en) 1982-09-30

Family

ID=12700699

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4477281A Pending JPS57158512A (en) 1981-03-25 1981-03-25 Magnetic linear encoder

Country Status (1)

Country Link
JP (1) JPS57158512A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63165711A (en) * 1986-12-27 1988-07-09 Emupaiya Eapooto Service:Kk Magnetic encoder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5559314A (en) * 1978-10-27 1980-05-02 Sony Corp Magnetic scale signal detector
JPS55142209A (en) * 1979-04-24 1980-11-06 Inoue Japax Res Inc Encoder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5559314A (en) * 1978-10-27 1980-05-02 Sony Corp Magnetic scale signal detector
JPS55142209A (en) * 1979-04-24 1980-11-06 Inoue Japax Res Inc Encoder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63165711A (en) * 1986-12-27 1988-07-09 Emupaiya Eapooto Service:Kk Magnetic encoder

Similar Documents

Publication Publication Date Title
DE3684488D1 (en) EXPANSION SENSOR.
GB1495320A (en) Magnetic field sensing apparatus
JPS57189011A (en) Position detecting mechanism
TW330285B (en) Spin valve magnetoresistive sensor with antiparallel pinned layer and improved exchange bias layer, and magnetic recording system using the sensor
CA2015156A1 (en) Flux spreading thin film magnetic devices
JPS57158512A (en) Magnetic linear encoder
JPS51129258A (en) Displacement detector
JPS52101065A (en) Magnetic scale
ES467766A1 (en) Device for reading information magnetically coded on a carrier
JPS5616801A (en) Magnetic scale
JPS56141514A (en) Length measuring device
JPS57141014A (en) Thin film magnetic sensor
JPS5525145A (en) Magnetic card reader
JPS57154014A (en) Magnetic rotary encoder
JPS5323608A (en) Magnet ic recording medium
JPS5440619A (en) Magnetic head of thin film
JPS55163630A (en) Magnetic recording medium
JPS52106500A (en) Magnetic recording medium
DK165888A (en) DEVICE FOR PROTECTION AGAINST MAGNETIC FLUX IN THE ENVIRONMENTAL ENVIRONMENT OF OBJECTS WHICH MAY BE CHANGED BY MOVING WITH MAGNETIC FLUX IS ISSUE WITH A MEDIUM WHICH MAGNETIC INFORMATION MAY BE REGISTERED
EP0381541A3 (en) Superconductive magnetoresistive device
JPS53116783A (en) Substrate straightening method
JPS56114121A (en) Magnetic head
JPS5210705A (en) Magnetic card
JPS5258515A (en) Magnetic resistance effect head
JPS5339110A (en) Magnetoresistance effect head