JPS56141514A - Length measuring device - Google Patents
Length measuring deviceInfo
- Publication number
- JPS56141514A JPS56141514A JP4431480A JP4431480A JPS56141514A JP S56141514 A JPS56141514 A JP S56141514A JP 4431480 A JP4431480 A JP 4431480A JP 4431480 A JP4431480 A JP 4431480A JP S56141514 A JPS56141514 A JP S56141514A
- Authority
- JP
- Japan
- Prior art keywords
- length measuring
- magnetic
- magnetization
- measuring device
- medium
- 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
Links
Abstract
PURPOSE: To obtain a low-cost and high-performance length measuring device by disposing a scale of which one surface is recorded with magnetic signals in the form of repetition of magnetization in the length measuring direction and the other surface is formed with a magnetic medium magnetized in the direction rectangular to this and MR elements.
CONSTITUTION: A magnetic medium 9 recorded with magnetic signals in the form of repetition of magnetization 10 of a bit length P along the length measuring direction (x direction) is formed on one surface of a scale block 8 of a rectangular parallelepiped shape. A magnetic recording medium 11 magnetized in the (y) direction at a prescribed width L over the length measuring section is formed on the back side thereof. Four MR sensors 16W19 are provided in parallel by way of a space D at the interval of P/4. The MR elements 16W19 are applied with the bias magnetic field 15 from the magnetization 12 in the (y) direction in the medium 11 roughly in a longitudinal direction other than the signal magnetic field 14 applied in the width direction and are thereby reduced of anisotropic diffusion and therefore the length measuring device is made low in cost and high in performance.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4431480A JPS56141514A (en) | 1980-04-04 | 1980-04-04 | Length measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4431480A JPS56141514A (en) | 1980-04-04 | 1980-04-04 | Length measuring device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56141514A true JPS56141514A (en) | 1981-11-05 |
JPS6239683B2 JPS6239683B2 (en) | 1987-08-25 |
Family
ID=12688018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4431480A Granted JPS56141514A (en) | 1980-04-04 | 1980-04-04 | Length measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56141514A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58169520U (en) * | 1982-05-07 | 1983-11-12 | ソニ−マグネスケ−ル株式会社 | magnetic scale device |
JPS59142403A (en) * | 1983-02-02 | 1984-08-15 | Kawaguchiko Seimitsu Kk | Digital vernier caliper |
JPS59164922U (en) * | 1983-04-18 | 1984-11-05 | 株式会社三協精機製作所 | Magnetic encoder device |
JPS59195122A (en) * | 1983-04-20 | 1984-11-06 | Keiichiro Taniguchi | Measuring method of land subsidence according to depth and magnetic detector to be used for measurement |
JPH01239418A (en) * | 1988-03-18 | 1989-09-25 | Matsushita Electric Ind Co Ltd | Magnetic absolute encoder device |
JP2020533366A (en) * | 2017-09-13 | 2020-11-19 | リビング プルーフ インコーポレイテッド | Long-lasting cosmetic composition |
CN114034222A (en) * | 2021-11-08 | 2022-02-11 | 上海市高级技工学校 | High-precision digital display vernier caliper and measuring method thereof |
-
1980
- 1980-04-04 JP JP4431480A patent/JPS56141514A/en active Granted
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58169520U (en) * | 1982-05-07 | 1983-11-12 | ソニ−マグネスケ−ル株式会社 | magnetic scale device |
JPS59142403A (en) * | 1983-02-02 | 1984-08-15 | Kawaguchiko Seimitsu Kk | Digital vernier caliper |
JPS59164922U (en) * | 1983-04-18 | 1984-11-05 | 株式会社三協精機製作所 | Magnetic encoder device |
JPS59195122A (en) * | 1983-04-20 | 1984-11-06 | Keiichiro Taniguchi | Measuring method of land subsidence according to depth and magnetic detector to be used for measurement |
JPH0551850B2 (en) * | 1983-04-20 | 1993-08-03 | Keiichiro Taniguchi | |
JPH01239418A (en) * | 1988-03-18 | 1989-09-25 | Matsushita Electric Ind Co Ltd | Magnetic absolute encoder device |
JP2020533366A (en) * | 2017-09-13 | 2020-11-19 | リビング プルーフ インコーポレイテッド | Long-lasting cosmetic composition |
CN114034222A (en) * | 2021-11-08 | 2022-02-11 | 上海市高级技工学校 | High-precision digital display vernier caliper and measuring method thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS6239683B2 (en) | 1987-08-25 |
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