JPS62164017A - Polygon mirror rotating device for optical scanning - Google Patents
Polygon mirror rotating device for optical scanningInfo
- Publication number
- JPS62164017A JPS62164017A JP61004955A JP495586A JPS62164017A JP S62164017 A JPS62164017 A JP S62164017A JP 61004955 A JP61004955 A JP 61004955A JP 495586 A JP495586 A JP 495586A JP S62164017 A JPS62164017 A JP S62164017A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- polygon mirror
- groove
- optical scanning
- deformation
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/12—Scanning systems using multifaceted mirrors
- G02B26/121—Mechanical drive devices for polygonal mirrors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は光走査用スキャナに係り、特に雀属多面鏡の面
倒れ積度の安定確保のために好適なブランク形状に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical scanning scanner, and more particularly to a blank shape suitable for ensuring stability in the degree of surface inclination of a polygonal mirror.
従来のポリゴンミラーのブランク形状は、特開昭８０−
４４８１２号公報記載のように平面のものが多く１段差
をつけたものは見覚られるが、加工時や組込時の内部歪
が鏡面へ伝わらないように積極的に凹溝を設は遮断する
といった配慮はされていなかった。The blank shape of the conventional polygon mirror was developed in 1980-
As described in Publication No. 44812, there are many flat surfaces with a one-step difference, but concave grooves are actively created to prevent internal distortion from being transmitted to the mirror surface during processing and assembly. No such consideration was given.
上記従来技術は、ブランク加工のために加工治具に固定
することによυ発生する歪や卯工が完了したポリゴンミ
ラーを１回モ子に組付ける時に発生する歪がミラー面に
伝わクミラー面の精度を低下させることを抑制する点に
ついて配慮されておらず、安定をした高精度の面倒れ精
度を得ることが難がしいという問題があった。In the above conventional technology, the distortion caused by fixing the polygon mirror to a processing jig for blank processing and the distortion caused when assembling the completed polygon mirror to the mirror are transmitted to the mirror surface. There was a problem in that it was difficult to obtain stable and high surface tilt accuracy because no consideration was given to suppressing a decrease in accuracy.
本発明の目的は、上記のごとく、ポリゴンミラーのブラ
ンク素材から、加工組立までに存在または発生する歪を
有効な手段で遮断することによって、変形を抑制するこ
とにある。As described above, an object of the present invention is to suppress deformation by effectively blocking the distortion that exists or occurs during the processing and assembly of a polygon mirror from a blank material.
上記目的は、ポリゴンミラーのブランクの中のブランク
や鏡面を変形させる原因となる歪の伝達経路をａＰｆｒ
すること、特にブランクのソリなどの変形に大きく寄与
する表面層の伝達経路を遮断するために溝部を設け、そ
の溝の壁面に変形を生じさせて特に表面層の歪を除去し
、ミラー面への影響をなくすることにより、達成される
。The above purpose is to reduce the transmission path of strain that causes deformation of the blank and mirror surface in the blank of the polygon mirror.
In particular, grooves are provided in order to block the transmission path of the surface layer that greatly contributes to deformation such as warping of the blank, and the wall of the groove is deformed to remove the distortion in the surface layer and transfer to the mirror surface. This is achieved by eliminating the influence of
〔作用〕
ブランクに設けた溝は、特に表面層を伝わる歪を遮断す
るのでブランク全体のソリ等の変形を抑制することがで
きる。[Function] The grooves provided in the blank particularly block strain transmitted through the surface layer, so that deformation such as warping of the entire blank can be suppressed.
以下１本発明の一実施例を図面に基づいて説明する。 An embodiment of the present invention will be described below based on the drawings.
本発明によるポリゴンミラー１は、ヨーク２とマグネッ
ト３を組込んだロータ４のミラー取付面１８と、ミラー
押えばね５のミラー押え部１９によって固定されている
。The polygon mirror 1 according to the present invention is fixed by a mirror mounting surface 18 of a rotor 4 incorporating a yoke 2 and a magnet 3, and a mirror pressing portion 19 of a mirror pressing spring 5.
ミラー押えばね５は、ねじ７で締付られる締付具例えば
キャップ６によって適正荷重が付与されている。このよ
うに構成されたロータ部は、ヨーク９と基板１０を組込
んだ固定子ノ・ウジング１１に、上側ベアリング１２．
下側ベアリング１３とシャフト８を介して組込まれ、予
圧皿ばね１４と予圧カラー１５によって予圧荷重が付与
されている。The mirror pressing spring 5 is given an appropriate load by a fastener, such as a cap 6, which is tightened with a screw 7. The rotor section configured in this manner includes a stator housing 11 incorporating a yoke 9 and a substrate 10, an upper bearing 12.
It is assembled via the lower bearing 13 and the shaft 8, and a preload is applied by a preload disc spring 14 and a preload collar 15.
以上のように構成したスキャナは、コントローラにより
高速回転をする。スキャナに取付けたポリゴンミラー１
は、投射されてきたレーザ光を効率良く反射し、各面毎
に走査を行なうものでろる。The scanner configured as described above is rotated at high speed by a controller. Polygon mirror 1 attached to the scanner
The laser beam is one that efficiently reflects the projected laser beam and scans each surface.
スキャナの基本的な性能としては１回転槽度つまシワウ
７う精度と面倒れ精度があシ、印字品質、解像度を向上
させるために、ａｍ倒れ精度は特に厳しく要求されてい
る。一般的には±５秒以下であシ、このレベルは、ブラ
ンク内に残留しているか、あるいは加工時や組込時に発
生する歪による変形で簡単に越えてしまうものである。The basic performance of a scanner is the accuracy of one-rotation rotation and tilting accuracy, and in order to improve print quality and resolution, particularly strict requirements are placed on the accuracy of AM tilting. Generally, it is ±5 seconds or less, and this level is easily exceeded due to deformation due to distortion remaining in the blank or occurring during processing or assembly.
本発明によれば、ポリゴンミラー１のミラー取付部１８
． ミラー押え部１９とミラーｒＭ１６の間に設けた
溝１７により、ミラー取付面１８やミラー押え部１９に
発生したブランク内の歪が、溝１７の内周壁面の変形に
よって除去解消されミラー面１６の変形つまジ面倒れ精
度の低下や不安定化を防ぐという効果がある。According to the present invention, the mirror mounting portion 18 of the polygon mirror 1
．． Due to the groove 17 provided between the mirror holding part 19 and the mirror rM16, the distortion in the blank generated in the mirror mounting surface 18 and the mirror holding part 19 is removed and eliminated by deformation of the inner circumferential wall surface of the groove 17, and the mirror surface 16 is This has the effect of preventing deterioration and instability of the deformed toe surface inclination accuracy.
第２図に従来の溝のないポリゴンミ２−の縦断端面の組
付時の辱応力線図を示し、第３図に本発明による溝のあ
るポリゴンミラーの縦断端面の組付時の等応力線図を示
したが、溝あシの場合、溝なしの場合に比べて約１／３
の変形量でアシ、変形防止のために溝が有効に作用して
いることがわかる。尚、数字は応力の強さく度数）を示
している。Fig. 2 shows a stress stress diagram when assembling the longitudinal end face of a conventional polygon mirror without grooves 2-, and Fig. 3 shows equal stress lines when assembling the longitudinal end face of a polygon mirror with grooves according to the present invention. As shown in the figure, in the case of grooves, it is about 1/3 of the case without grooves.
It can be seen that the grooves are working effectively to prevent the reeds from deforming with the amount of deformation. Note that the numbers indicate the strength of the stress (in degrees).
本発明によれば、ポリゴンミラーのブランク内の歪や、
加工時、加工後の組立時に発生する歪のつながシ（伝達
ンをｉｌ！！？できるので、安定をした面倒れ精度を確
保できるという効果がある。According to the present invention, distortion within a blank of a polygon mirror,
Since it is possible to reduce the transmission of strain that occurs during processing and during assembly after processing, it has the effect of ensuring stable surface tilt accuracy.
第１図は本発明の一実施例のスキャナの縦断面図、第２
図は溝なしのポリゴンミラ一端面の等応力線図、第３図
は溝あシボリボンミラ一端面の等応力線図である。
１・・・多面鏡、２・・・ヨーク、３・・・マグネット
、４・・・ロータ、５・・・ミラー押えばね、６・・・
キャップ、７・・・ねじ、８・・・シャフト、９・・・
ヨーク、１０・・・基板。
１１・・・ハウジング、１２・・・上側ベアリング、１
３・・・下側ベアリング、１４・・・予圧皿ばね％ １
５・・・予圧カラー、１６・・・ミラー面、１７・・・
溝、１８・・・ミ第１図
１１ ハウヅン７” ／δ・・・ミラー取イを５
第 ２ 図FIG. 1 is a vertical sectional view of a scanner according to an embodiment of the present invention, and FIG.
The figure is an equal stress line diagram of one end face of a polygon mirror without grooves, and FIG. 3 is an equal stress line diagram of one end face of a grooved ribbed mirror. 1...Polygon mirror, 2...Yoke, 3...Magnet, 4...Rotor, 5...Mirror presser, 6...
Cap, 7...screw, 8...shaft, 9...
Yoke, 10... board. 11...Housing, 12...Upper bearing, 1
3...Lower bearing, 14...Preload disc spring% 1
5... Preload collar, 16... Mirror surface, 17...
Groove, 18... Figure 1 11 Housing 7"/δ...Mirror take-off 5
Figure 2
Claims (1)
回転子と一体化された多面鏡と、この回転子を高速回転
する固定子とからなるものにおいて、 前記多面鏡の締付面より外周に歪遮断機能を有する溝を
設けたことを特徴とする光走査用多面鏡回転装置。 ２、前記特許請求の範囲第１項記載のものにおいて、溝
は環状溝であることを特徴とする光走査用多面鏡回転装
置。 ３、前記特許請求の範囲第１項記載のものにおいて、溝
は上下面の両者に設けたことを特徴とする光走査用多面
鏡回転装置。 ４、前記特許請求の範囲第１項記載のものにおいて、多
面鏡を固定する上下の部材が多面鏡と接する位置を凹溝
内周の近傍とし、かつ上下の負荷軸線および負荷幅を等
しくしたことを特徴とする光走査用多面鏡回転装置。 ５、前記特許請求の範囲第１項記載のものにおいて、多
面鏡取付面の幅より鏡面の幅をせまくしたことを特徴と
する光走査用多面鏡回転装置。[Claims] 1. A rotor, a polygon mirror attached to the rotor by a fastener and integrated with the rotor, and a stator for rotating the rotor at high speed, A polygonal mirror rotation device for optical scanning, characterized in that a groove having a strain-blocking function is provided on an outer periphery of the polygonal mirror from a clamping surface thereof. 2. The polygon mirror rotation device for optical scanning according to claim 1, wherein the groove is an annular groove. 3. An optical scanning polygon mirror rotation device according to claim 1, characterized in that grooves are provided on both the upper and lower surfaces. 4. In the item described in claim 1, the upper and lower members for fixing the polygon mirror contact the polygon mirror at positions near the inner periphery of the groove, and the upper and lower load axes and load widths are made equal. A polygonal mirror rotation device for optical scanning, which is characterized by: 5. The polygon mirror rotation device for optical scanning according to claim 1, characterized in that the width of the mirror surface is narrower than the width of the polygon mirror mounting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61004955A JPH0640177B2 (en) | 1986-01-16 | 1986-01-16 | Polygon rotating device for optical scanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61004955A JPH0640177B2 (en) | 1986-01-16 | 1986-01-16 | Polygon rotating device for optical scanning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62164017A true JPS62164017A (en) | 1987-07-20 |
| JPH0640177B2 JPH0640177B2 (en) | 1994-05-25 |
Family
ID=11597996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61004955A Expired - Lifetime JPH0640177B2 (en) | 1986-01-16 | 1986-01-16 | Polygon rotating device for optical scanning |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0640177B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01297616A (en) * | 1988-05-26 | 1989-11-30 | Matsushita Electric Ind Co Ltd | Rotary polygonal mirror device |
| JPH0291464U (en) * | 1988-12-28 | 1990-07-19 | ||
| JPH046017U (en) * | 1990-05-02 | 1992-01-21 | ||
| US5245234A (en) * | 1990-12-28 | 1993-09-14 | Nippon Densan Corporation | Motor |
| US6151151A (en) * | 1998-05-27 | 2000-11-21 | Ricoh Company, Ltd. | Scanner using a polygonal mirror |
| US6175439B1 (en) | 1998-06-12 | 2001-01-16 | Ricoh Company, Inc. | Rotary body for a polygonal mirror type scanner and method of machining the same |
| DE4323962B4 (en) * | 1992-07-17 | 2005-02-10 | Konica Corp. | Light beam scanning device and method of assembly therefor |
-
1986
- 1986-01-16 JP JP61004955A patent/JPH0640177B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01297616A (en) * | 1988-05-26 | 1989-11-30 | Matsushita Electric Ind Co Ltd | Rotary polygonal mirror device |
| JPH0291464U (en) * | 1988-12-28 | 1990-07-19 | ||
| JPH046017U (en) * | 1990-05-02 | 1992-01-21 | ||
| US5245234A (en) * | 1990-12-28 | 1993-09-14 | Nippon Densan Corporation | Motor |
| DE4323962B4 (en) * | 1992-07-17 | 2005-02-10 | Konica Corp. | Light beam scanning device and method of assembly therefor |
| US6151151A (en) * | 1998-05-27 | 2000-11-21 | Ricoh Company, Ltd. | Scanner using a polygonal mirror |
| US6175439B1 (en) | 1998-06-12 | 2001-01-16 | Ricoh Company, Inc. | Rotary body for a polygonal mirror type scanner and method of machining the same |
| US6201624B1 (en) | 1998-06-12 | 2001-03-13 | Ricoh Company, Ltd. | Rotary body for a polygonal mirror type scanner and method of machining the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0640177B2 (en) | 1994-05-25 |
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