JPS5654438A - Locator in information retrieving device - Google Patents

Locator in information retrieving device

Info

Publication number
JPS5654438A
JPS5654438A JP12982579A JP12982579A JPS5654438A JP S5654438 A JPS5654438 A JP S5654438A JP 12982579 A JP12982579 A JP 12982579A JP 12982579 A JP12982579 A JP 12982579A JP S5654438 A JPS5654438 A JP S5654438A
Authority
JP
Japan
Prior art keywords
minute
long stroke
scale
driving
locating mechanism
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
JP12982579A
Other languages
Japanese (ja)
Other versions
JPS6057086B2 (en
Inventor
Eiichi Tsukada
Shigeki Ogawa
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP54129825A priority Critical patent/JPS6057086B2/en
Publication of JPS5654438A publication Critical patent/JPS5654438A/en
Publication of JPS6057086B2 publication Critical patent/JPS6057086B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To enable an information retrieving device to be located easily, correctly and rapidly by driving and controlling the main scale of an optical linear encoder at the step of minute intervals to locate the device.
CONSTITUTION: Positioner 4 provided with index scale 2 on the basis of an address corresponding to a record of each desired position of an information recording medium with records stored over a long stroke is moved and located with locating mechanism 6 or the like for driving a long stroke belt or the like. On the other hand, main scale 1 of an optical linear encoder is controlled with locating mechanism 3 such as minute screw so that it is stepwise moved by a narrow step region obtd. by dividing position mark pitch ΔX into a plurality of parts. Accordingly, the scale of encoder 1 is practically made minute and given high resolving power, and adjustment is performed over a long stroke at minute step intervals.
COPYRIGHT: (C)1981,JPO&Japio
JP54129825A 1979-10-11 1979-10-11 Positioning device in information retrieval device Expired JPS6057086B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54129825A JPS6057086B2 (en) 1979-10-11 1979-10-11 Positioning device in information retrieval device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54129825A JPS6057086B2 (en) 1979-10-11 1979-10-11 Positioning device in information retrieval device

Publications (2)

Publication Number Publication Date
JPS5654438A true JPS5654438A (en) 1981-05-14
JPS6057086B2 JPS6057086B2 (en) 1985-12-13

Family

ID=15019144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54129825A Expired JPS6057086B2 (en) 1979-10-11 1979-10-11 Positioning device in information retrieval device

Country Status (1)

Country Link
JP (1) JPS6057086B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057417A (en) * 1983-09-08 1985-04-03 Tohoku Metal Ind Ltd Position control system
JPS61250296A (en) * 1985-04-26 1986-11-07 瀬谷　実 Underground excavation method and underground excavator
JPH02120594U (en) * 1989-03-09 1990-09-28

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057417A (en) * 1983-09-08 1985-04-03 Tohoku Metal Ind Ltd Position control system
JPS61250296A (en) * 1985-04-26 1986-11-07 瀬谷　実 Underground excavation method and underground excavator
JPH02120594U (en) * 1989-03-09 1990-09-28

Also Published As

Publication number Publication date
JPS6057086B2 (en) 1985-12-13

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