JPS6410209A - Polygon mirror - Google Patents

Polygon mirror

Info

Publication number
JPS6410209A
JPS6410209A JP16546787A JP16546787A JPS6410209A JP S6410209 A JPS6410209 A JP S6410209A JP 16546787 A JP16546787 A JP 16546787A JP 16546787 A JP16546787 A JP 16546787A JP S6410209 A JPS6410209 A JP S6410209A
Authority
JP
Japan
Prior art keywords
support body
gas
hollow chamber
polygon
rotary
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
JP16546787A
Other languages
Japanese (ja)
Other versions
JPH0677111B2 (en
Inventor
Noriyuki Osada
Minoru Iwata
Toshiya Kanamori
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.)
Ebara Corp
Original Assignee
Ebara 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 Ebara Corp filed Critical Ebara Corp
Priority to JP16546787A priority Critical patent/JPH0677111B2/en
Publication of JPS6410209A publication Critical patent/JPS6410209A/en
Publication of JPH0677111B2 publication Critical patent/JPH0677111B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Sliding-Contact Bearings (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

PURPOSE:To improve the perpendicularity and parallelism of a polygon mirror by interposing a slide member between a rotary body and a support body, enclosing a hollow chamber wherein the polygon rotor is put by the support body and a cover body fitted thereupon, and charging gas which is small in concentration to air in the hollow chamber. CONSTITUTION:The slide member 10 made of a ceramic material where a groove 11 for dynamic pressure generation, i.e. spiral groove is formed is interposed and arranged between the rotary body 3 and support body 4, the hollow chamber 20 wherein the polygon rotor can be interposed is enclosed by the support body 4, the cover body 12 fitted thereupon, and a seal material 23 such as an O ring, charged with the gas which is small in concentration to air, and put in operation under reduced pressure. In this case, helium gas is used as the charged gas. Consequently, the perpendicularity and parallelism of the polygon rotor are improved and the windage loss at the time of rotary operation is reduced greatly to enable fast rotation.
JP16546787A 1987-07-03 1987-07-03 Polygon mirror Expired - Lifetime JPH0677111B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16546787A JPH0677111B2 (en) 1987-07-03 1987-07-03 Polygon mirror

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16546787A JPH0677111B2 (en) 1987-07-03 1987-07-03 Polygon mirror

Publications (2)

Publication Number Publication Date
JPS6410209A true JPS6410209A (en) 1989-01-13
JPH0677111B2 JPH0677111B2 (en) 1994-09-28

Family

ID=15812968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16546787A Expired - Lifetime JPH0677111B2 (en) 1987-07-03 1987-07-03 Polygon mirror

Country Status (1)

Country Link
JP (1) JPH0677111B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01245217A (en) * 1988-03-28 1989-09-29 Copal Electron Co Ltd Optical deflector
JPH02141722U (en) * 1989-04-28 1990-11-29
US5373391A (en) * 1992-02-26 1994-12-13 Ebara Corporation Polygon mirror with embedded yoke
US6980340B1 (en) 1999-09-09 2005-12-27 Fuji Xerox Co., Ltd. Rotary deflector, optical scanning unit and image forming apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01245217A (en) * 1988-03-28 1989-09-29 Copal Electron Co Ltd Optical deflector
JPH02141722U (en) * 1989-04-28 1990-11-29
US5373391A (en) * 1992-02-26 1994-12-13 Ebara Corporation Polygon mirror with embedded yoke
US6980340B1 (en) 1999-09-09 2005-12-27 Fuji Xerox Co., Ltd. Rotary deflector, optical scanning unit and image forming apparatus

Also Published As

Publication number Publication date
JPH0677111B2 (en) 1994-09-28

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