JPS59178936A - Rotary polyphase mirror scanner - Google Patents

Rotary polyphase mirror scanner

Info

Publication number
JPS59178936A
JPS59178936A JP58050438A JP5043883A JPS59178936A JP S59178936 A JPS59178936 A JP S59178936A JP 58050438 A JP58050438 A JP 58050438A JP 5043883 A JP5043883 A JP 5043883A JP S59178936 A JPS59178936 A JP S59178936A
Authority
JP
Japan
Prior art keywords
poles
shaft
scanner
magnetic
magnets
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
JP58050438A
Other languages
Japanese (ja)
Inventor
Norimitsu Hirano
Masataka Ogawa
Original Assignee
Takahashi Yoshiteru
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 Takahashi Yoshiteru filed Critical Takahashi Yoshiteru
Priority to JP58050438A priority Critical patent/JPS59178936A/en
Publication of JPS59178936A publication Critical patent/JPS59178936A/en
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K29/00Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B26/00Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
    • G02B26/08Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating for controlling the direction of light
    • G02B26/10Scanning systems
    • G02B26/12Scanning systems using multifaceted mirrors
    • G02B26/121Mechanical drive devices for polygonal mirrors

Abstract

PURPOSE:To reduce the size of a scanner by mounting a polygonal mirror and N-poles and S-poles of flat plates on a rotary shaft, varying the magnetic force at fine pitch at the end as a rotor and opposing a plurality of coils not superposed in flat plate shape as stator. CONSTITUTION:A stationary shaft 3 is stool on a flat cut-shaped support 2, and a rotational shaft 10 made of magnetic material is rotatably supported. A polygonal mirror 12 is engaged with the collar 10b integral with the shaft 10 at the top of the shaft 10. The collar 10b forms a belt part 10c extended vertically, and contains field magnets 11 disposed annularly alternately at N-poles and S- poles. The periphery of the magnet 11 is strongly and weakly magnetized at fine pitch to form a rotor. A magnetic yoke 4, a plurality of not superposed coils 6, and a printed board 7 are provided at the hole of the support 2, and opposed to the magnet 11. A plurality of position detectors 8 mounted on the board 7 detect the rotating speed from the variation in the magnetic force of the magnets 11 to control the speed. In this manner, the scanner having small size and accurate operation is manufactured.
JP58050438A 1983-03-28 1983-03-28 Rotary polyphase mirror scanner Granted JPS59178936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58050438A JPS59178936A (en) 1983-03-28 1983-03-28 Rotary polyphase mirror scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58050438A JPS59178936A (en) 1983-03-28 1983-03-28 Rotary polyphase mirror scanner

Publications (1)

Publication Number Publication Date
JPS59178936A true JPS59178936A (en) 1984-10-11

Family

ID=12858858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58050438A Granted JPS59178936A (en) 1983-03-28 1983-03-28 Rotary polyphase mirror scanner

Country Status (1)

Country Link
JP (1) JPS59178936A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6324964U (en) * 1986-07-29 1988-02-18
JPS63129827A (en) * 1986-11-19 1988-06-02 Fuji Xerox Co Ltd Toroidal motor
JPS63274340A (en) * 1987-04-28 1988-11-11 Canon Inc Bearing structure of scanner motor
JPH01316717A (en) * 1988-06-17 1989-12-21 Canon Inc Rotary polygonal mirror driving motor
JPH0287216U (en) * 1988-12-26 1990-07-10
JPH02113714U (en) * 1989-02-28 1990-09-12

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5716562A (en) * 1980-07-03 1982-01-28 Japan Servo Co Ltd Motor for driving magnetic disc

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5716562A (en) * 1980-07-03 1982-01-28 Japan Servo Co Ltd Motor for driving magnetic disc

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6324964U (en) * 1986-07-29 1988-02-18
JPS63129827A (en) * 1986-11-19 1988-06-02 Fuji Xerox Co Ltd Toroidal motor
JPS63274340A (en) * 1987-04-28 1988-11-11 Canon Inc Bearing structure of scanner motor
JPH01316717A (en) * 1988-06-17 1989-12-21 Canon Inc Rotary polygonal mirror driving motor
JPH0287216U (en) * 1988-12-26 1990-07-10
JPH0511533Y2 (en) * 1988-12-26 1993-03-23
JPH02113714U (en) * 1989-02-28 1990-09-12

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