JPS57182118A - Magnetic scale - Google Patents

Magnetic scale

Info

Publication number
JPS57182118A
JPS57182118A JP8777181A JP8777181A JPS57182118A JP S57182118 A JPS57182118 A JP S57182118A JP 8777181 A JP8777181 A JP 8777181A JP 8777181 A JP8777181 A JP 8777181A JP S57182118 A JPS57182118 A JP S57182118A
Authority
JP
Japan
Prior art keywords
magnetic scale
magnetizing
magnetic
coils
projections
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
JP8777181A
Other languages
Japanese (ja)
Inventor
Hiroyuki Okubo
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.)
SONII MAGUNESUKEERU KK
Sony Magnescale Inc
Original Assignee
SONII MAGUNESUKEERU KK
Sony Magnescale Inc
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 SONII MAGUNESUKEERU KK, Sony Magnescale Inc filed Critical SONII MAGUNESUKEERU KK
Priority to JP8777181A priority Critical patent/JPS57182118A/en
Publication of JPS57182118A publication Critical patent/JPS57182118A/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

Landscapes

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

Abstract

PURPOSE:To heighten the accuracy of a magnetic scale while not disturbing the order of magnetizing direction thereof by joining magnetic scale unit with the magnetizing sections opposite in the magnetizing direction at both ends thereof to form a magnetic scale of a long rule. CONSTITUTION:A magnetic scale unit 10 has a magnetic recording medium layer 11 of a ferromagnetic material formed at a thickness of about 1mm. on a substrate 12 of a high magnetic permeability material. Coils 23 are separately wound on projections 2 on a comb-shaped core 21 of a magnetization device 20. Adjacent coils 23 are opposite to each other in the winding direction. When current flows through the coils 23, a magnetizing section 13 magnetized vertically is formed at the position corresponding to the projections 22. Then, the units 10 are bonded lengthwise in plurality on a rod-shaped substrate to form a magnetic scale of a long rule.
JP8777181A 1981-06-08 1981-06-08 Magnetic scale Pending JPS57182118A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8777181A JPS57182118A (en) 1981-06-08 1981-06-08 Magnetic scale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8777181A JPS57182118A (en) 1981-06-08 1981-06-08 Magnetic scale

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP10647381A Division JPS5870129A (en) 1981-07-08 1981-07-08 Production of long sized magnetic scale

Publications (1)

Publication Number Publication Date
JPS57182118A true JPS57182118A (en) 1982-11-09

Family

ID=13924229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8777181A Pending JPS57182118A (en) 1981-06-08 1981-06-08 Magnetic scale

Country Status (1)

Country Link
JP (1) JPS57182118A (en)

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