JPH0367310U - - Google Patents
Info
- Publication number
- JPH0367310U JPH0367310U JP12989889U JP12989889U JPH0367310U JP H0367310 U JPH0367310 U JP H0367310U JP 12989889 U JP12989889 U JP 12989889U JP 12989889 U JP12989889 U JP 12989889U JP H0367310 U JPH0367310 U JP H0367310U
- Authority
- JP
- Japan
- Prior art keywords
- polygon mirror
- dynamic pressure
- air
- rotating body
- cylindrical
- 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
- 230000004907 flux Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Sliding-Contact Bearings (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Description
第１図は本考案実施例による光学走査装置にお
ける要部を説明するための断面図、第２図は第１
図に示した要部のうちの回転部材の外周面の状態
を示す側面図、第３図は第１図に示した要部を装
備した光学走査装置の構造を説明するための概略
断面図、第４図は第１図に示した要部の変形例を
示す第１図相当の断面図である。
１……ポリゴンミラー、２……回転体、３……
ベース材、４……バランスプレート、５……軸受
部材、１０……周溝、１１，１６……空気孔、１
２……フイルタ、１３……ハウジング、１４……
結像レンズ系、１５……ミラー。
FIG. 1 is a cross-sectional view for explaining the main parts of an optical scanning device according to an embodiment of the present invention, and FIG.
A side view showing the state of the outer circumferential surface of a rotating member among the main parts shown in the figure; FIG. 3 is a schematic sectional view for explaining the structure of an optical scanning device equipped with the main parts shown in FIG. 1; FIG. 4 is a sectional view corresponding to FIG. 1, showing a modification of the main part shown in FIG. 1. 1... Polygon mirror, 2... Rotating body, 3...
Base material, 4... Balance plate, 5... Bearing member, 10... Circumferential groove, 11, 16... Air hole, 1
2...Filter, 13...Housing, 14...
Imaging lens system, 15...mirror.
Claims (1)
このポリゴンミラーをモータで回転駆動するよう
に成した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持する円筒状
の軸受部材とで構成され、 上記回転体の円筒状外周面または上記軸受部材
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、この空気孔を経て空気
を動圧発生用グルーブに送るようにすると共に、
上記空気孔における空気の導入側にフイルタ部材
を設けた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 in which the polygon mirror is rotationally driven by a motor, the motor that rotationally drives the polygon mirror is:
It is composed of 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 inner surface of the bearing member. A dynamic pressure generating groove is provided on either side of the circumferential surface to form a dynamic pressure bearing, and the bearing member is provided with an air hole that sends air to the dynamic pressure generating groove. The air is then sent to the groove for generating dynamic pressure, and
An optical scanning device characterized in that a filter member is provided on the air introduction side of the air hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12989889U JPH0367310U (en) | 1989-11-07 | 1989-11-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12989889U JPH0367310U (en) | 1989-11-07 | 1989-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0367310U true JPH0367310U (en) | 1991-07-01 |
Family
ID=31677497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12989889U Pending JPH0367310U (en) | 1989-11-07 | 1989-11-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0367310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007506027A (en) * | 2003-09-18 | 2007-03-15 | マイラケル， エルエルシー | Rotary blood pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6412126A (en) * | 1987-07-01 | 1989-01-17 | Sankyo Seiki Seisakusho Kk | Rotary device |
-
1989
- 1989-11-07 JP JP12989889U patent/JPH0367310U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6412126A (en) * | 1987-07-01 | 1989-01-17 | Sankyo Seiki Seisakusho Kk | Rotary device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007506027A (en) * | 2003-09-18 | 2007-03-15 | マイラケル， エルエルシー | Rotary blood pump |