JPS6410208A - Polygon mirror - Google Patents
Polygon mirrorInfo
- Publication number
- JPS6410208A JPS6410208A JP16546687A JP16546687A JPS6410208A JP S6410208 A JPS6410208 A JP S6410208A JP 16546687 A JP16546687 A JP 16546687A JP 16546687 A JP16546687 A JP 16546687A JP S6410208 A JPS6410208 A JP S6410208A
- Authority
- JP
- Japan
- Prior art keywords
- support
- reduced pressure
- hollow chamber
- polygon
- perpendicularity
- 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
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 rotor by interposing and arranging a slide member between a rotary body and a support, enclosing a hollow chamber wherein the polygon rotor is put by the support and a cover body fitted onto the support, and holding it under reduced pressure. 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 4, and the hollow chamber 20 wherein the polygon rotor can be put is enclosed by the support 4, the cover body 12 fitted onto the support 4, and a seal material 23 such as an O ring, held under reduced pressure, and put in operation under the reduced pressure. In this case, the hollow chamber 20 is linked with a vacuum pump 21 as a pressure reduction source and its degree of vacuum is held within a range of 700-200mmHg. Consequently, the perpendicularity and parallelism of the polygon mirror are improved greatly and the windage loss at the time of rotary operation to enable fast rotation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16546687A JPS6410208A (en) | 1987-07-03 | 1987-07-03 | Polygon mirror |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16546687A JPS6410208A (en) | 1987-07-03 | 1987-07-03 | Polygon mirror |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6410208A true JPS6410208A (en) | 1989-01-13 |
Family
ID=15812949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16546687A Pending JPS6410208A (en) | 1987-07-03 | 1987-07-03 | Polygon mirror |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6410208A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5373391A (en) * | 1992-02-26 | 1994-12-13 | Ebara Corporation | Polygon mirror with embedded yoke |
JP2002107651A (en) * | 2000-10-02 | 2002-04-10 | Nidec Copal Electronics Corp | Light deflector |
-
1987
- 1987-07-03 JP JP16546687A patent/JPS6410208A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5373391A (en) * | 1992-02-26 | 1994-12-13 | Ebara Corporation | Polygon mirror with embedded yoke |
JP2002107651A (en) * | 2000-10-02 | 2002-04-10 | Nidec Copal Electronics Corp | Light deflector |
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