JPH0339714U - - Google Patents
Info
- Publication number
- JPH0339714U JPH0339714U JP11412889U JP11412889U JPH0339714U JP H0339714 U JPH0339714 U JP H0339714U JP 11412889 U JP11412889 U JP 11412889U JP 11412889 U JP11412889 U JP 11412889U JP H0339714 U JPH0339714 U JP H0339714U
- Authority
- JP
- Japan
- Prior art keywords
- polygon mirror
- dynamic pressure
- rotating body
- housing
- bearing member
- 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
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Sliding-Contact Bearings (AREA)
Description
第１図は本考案に適用可能なポリゴンミラーの
回転駆動装置の一例を示す縦断面図、第２図は同
上装置中の回転体とポリゴンミラーの部分の一部
断面正面図、第３図はポリゴンミラーの回転駆動
装置の別の例を示す縦断面図、第４図は本考案に
かかる光学走査装置の実施例を示す一部断面正面
図、第５図は本考案に適用可能なポリゴンミラー
の回転駆動装置のさらに別の例を示す縦断面図、
第６図は従来の光学走査装置に用いられているポ
リゴンミラーの回転駆動装置の例を示す一部断面
正面図、第７図は同上正面断面図である。
１……軸受部材、２……回転体、３……ポゴン
リミラー、２０……モータ、２１……ハウジング
、２２……結像レンズ系、２４……被走査体とし
ての感光体ドラム、１ｂ……空気孔、Ｇ……動圧
発生用グルーブ。
FIG. 1 is a longitudinal cross-sectional view showing an example of a polygon mirror rotation drive device applicable to the present invention, FIG. 2 is a partially sectional front view of the rotating body and polygon mirror in the same device, and FIG. FIG. 4 is a longitudinal sectional view showing another example of a rotational drive device for a polygon mirror, FIG. 4 is a partially sectional front view showing an embodiment of the optical scanning device according to the present invention, and FIG. 5 is a polygon mirror applicable to the present invention. A vertical cross-sectional view showing yet another example of the rotary drive device,
FIG. 6 is a partially sectional front view showing an example of a polygon mirror rotation drive device used in a conventional optical scanning device, and FIG. 7 is a front sectional view of the same. DESCRIPTION OF SYMBOLS 1... Bearing member, 2... Rotating body, 3... Pogon mirror, 20... Motor, 21... Housing, 22... Imaging lens system, 24... Photosensitive drum as a scanned body, 1b... Air hole, G...groove for generating dynamic pressure.
Claims (1)
このポリゴンミラーで走査された光束を被走査体
上に結像させる結像レンズ系とをハウジングに収
納してなる光学走査装置において、 上記ポリゴンミラーを回転駆動するモータは、
上記ポリゴンミラーを一体に有する円筒状の回転
体とこの回転体を回転自在に嵌合支承する円筒状
の軸受部材とを有してなり、 上記回転体の円筒状外周面又は上記軸受部材の
円筒状内周面のいずれか一方に動圧発生用グルー
ブが設けられて動圧軸受を形成しており、 上記ハウジング内の上記軸受部材には、動圧発
生用グルーブに空気を送る空気孔が設けられ、こ
の空気孔を経て上記ハウジング内の空気を動圧発
生用グルーブに送ることを特徴とする光学走査装
置。[Claims for Utility Model Registration] A polygon mirror that scans the luminous flux from a light source,
In an optical scanning device that includes an imaging lens system that forms an image of the light beam scanned by the polygon mirror onto a scanned object in a housing, a motor that rotationally drives the polygon mirror includes:
It has a cylindrical rotating body that integrally includes the polygon mirror, and a cylindrical bearing member that rotatably fits and supports the rotating body, and the cylindrical outer peripheral surface of the rotating body or the cylindrical shape of the bearing member. A dynamic pressure generating groove is provided on either side of the shaped inner circumferential surface to form a dynamic pressure bearing, and the bearing member in the housing is provided with an air hole for supplying air to the dynamic pressure generating groove. An optical scanning device characterized in that the air in the housing is sent to the dynamic pressure generating groove through the air hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11412889U JPH0339714U (en) | 1989-05-15 | 1989-09-28 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5547589 | 1989-05-15 | ||
| JP11412889U JPH0339714U (en) | 1989-05-15 | 1989-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0339714U true JPH0339714U (en) | 1991-04-17 |
Family
ID=31718143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11412889U Pending JPH0339714U (en) | 1989-05-15 | 1989-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0339714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008172680A (en) * | 2007-01-15 | 2008-07-24 | Idex Co Ltd | Hearing aid housing case |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60254110A (en) * | 1984-05-31 | 1985-12-14 | Toshiba Corp | Support device for rotating body |
| JPS61269117A (en) * | 1985-05-24 | 1986-11-28 | Toshiba Corp | Device for supporting rotary body |
| JPS643318A (en) * | 1987-06-26 | 1989-01-09 | Sankyo Seiki Seisakusho Kk | Rotary device |
-
1989
- 1989-09-28 JP JP11412889U patent/JPH0339714U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60254110A (en) * | 1984-05-31 | 1985-12-14 | Toshiba Corp | Support device for rotating body |
| JPS61269117A (en) * | 1985-05-24 | 1986-11-28 | Toshiba Corp | Device for supporting rotary body |
| JPS643318A (en) * | 1987-06-26 | 1989-01-09 | Sankyo Seiki Seisakusho Kk | Rotary device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008172680A (en) * | 2007-01-15 | 2008-07-24 | Idex Co Ltd | Hearing aid housing case |