JPH02278221A - Correcting mechanism for surface inclination of polygon mirror - Google Patents
Correcting mechanism for surface inclination of polygon mirrorInfo
- Publication number
- JPH02278221A JPH02278221A JP10082089A JP10082089A JPH02278221A JP H02278221 A JPH02278221 A JP H02278221A JP 10082089 A JP10082089 A JP 10082089A JP 10082089 A JP10082089 A JP 10082089A JP H02278221 A JPH02278221 A JP H02278221A
- Authority
- JP
- Japan
- Prior art keywords
- polygon mirror
- slit
- reflective surface
- screw
- light beam
- 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
- 108091008695 photoreceptors Proteins 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 5
- 108050002788 RNA polymerase sigma-H factor Proteins 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、光偏向器に用いられるポリゴンミラの面倒れ
補正機構に関する。詳説すれば、面倒れ補正し・ンズを
使用しないで、ポリゴンミラの面で反射したビームの補
正を実施すべく、ポリゴンミラ目体でビームの面倒れ補
正作用を行うように構成したポリゴンミラの面倒れ補正
機構に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tilt correction mechanism for a polygon mirror used in an optical deflector. To be more specific, in order to correct the beam reflected on the surface of the polygon mirror without using a face tilt correction lens, the polygon mirror is configured so that the beam face tilt correction function is performed by the polygon mirror's eye body. This invention relates to a surface tilt correction mechanism.
（従来の技術）
従来より使用されている光偏向器用ポリゴンミラの面倒
れ補正は、一般に補正用シリンドリカルレンズを採用し
ていた。すなわち、ポリゴンミラ回転中の面倒れに起因
して発生したポリゴンミラでの光ビーム反射誤差は、補
正光学系のシリンドリカルレンズ群により補正し、その
誤差を小さくする構成であった。(Prior Art) A cylindrical lens for correction has generally been used to correct the surface inclination of a polygon mirror for an optical deflector that has been used in the past. That is, the light beam reflection error in the polygon mirror caused by the tilting of the surface during rotation of the polygon mirror is corrected by the cylindrical lens group of the correction optical system, thereby reducing the error.
（発明の解決しようとする課題）
前述の従来例のポリゴンミラの面倒れ補正構成は、別に
複数の光学系レンズ群の組合せを必、要とし、これに使
用するレンズの枚数も多く、又複雑な組合せ構成である
から、使用する部品点数も増加し、コスト高となる等の
問題点があった。(Problems to be Solved by the Invention) The above-mentioned conventional polygon mirror face tilt correction structure requires a combination of multiple optical system lens groups, requires a large number of lenses, and is complicated. Since it is a combination structure, there are problems such as an increase in the number of parts used and an increase in cost.
本発明は前述の問題点を解決することを目的とするもの
である。The present invention aims to solve the above-mentioned problems.
（課題を解決するための手段）
前記目的を達成するための手段として下記のポリゴンミ
ラの面倒れ補正機構を提供する。(Means for Solving the Problem) As a means for achieving the above object, the following polygon mirror surface tilt correction mechanism is provided.
すなわち、光源からの光ビームをポリゴンミラで反射さ
せ、集光レンズ系を用いて感光体で結像せしめる光ビー
ム走査装置において、ポリゴンミラの側面にスラスト方
向にスリットを設け、このスリットの巾を調整すること
により、ポリゴンミラの反射表面部の傾斜角度を加減し
、この反射表面部で反射する光ビームの方向を一定とす
ることを特徴とするポリゴンミラの面倒れ補正機構であ
って、更に詳しくいえば、一端部をポリゴンミラと連結
し、他端部に開口部を形成してなるスリットと前記スリ
ットによりポリゴンミラより区劃された反射表面部と前
記反射表面部にラジアル方向に設けたねじ孔とこのねじ
孔に螺合自在のねじとを有し、ねじ孔とねじとの螺合度
を調整することにより、前記反射表面部の傾斜角度を調
整するものである。That is, in a light beam scanning device that reflects a light beam from a light source on a polygon mirror and forms an image on a photoreceptor using a condensing lens system, a slit is provided in the side surface of the polygon mirror in the thrust direction, and the width of this slit is A surface tilt correction mechanism for a polygon mirror, characterized in that the angle of inclination of the reflective surface of the polygon mirror is adjusted to make the direction of the light beam reflected by the reflective surface constant by adjustment, further comprising: Specifically, a slit is formed by connecting one end to the polygon mirror and forming an opening at the other end, a reflective surface section separated from the polygon mirror by the slit, and a reflective surface section provided in the radial direction on the reflective surface section. It has a screw hole and a screw that can be screwed into the screw hole, and the inclination angle of the reflective surface portion can be adjusted by adjusting the degree of screw engagement between the screw hole and the screw.
（作 用）
反射表面部にラジアル方向に穿設したねじ孔にねじを螺
合して、ねじを前進、後退させることにより、反射表面
部の傾斜角度を調整できる。この角度調整によりポリゴ
ンミラで反射した光ビームの方向を一定とすることがで
きる０本手段によれば、従来例のような複雑な補正用シ
リンドリカルレンズ群を採用せずして、単にポリゴンミ
ラの反射表面部の傾斜角度調整により行うことができる
。(Function) The inclination angle of the reflective surface can be adjusted by screwing a screw into a screw hole drilled in the reflective surface in the radial direction and moving the screw forward or backward. By adjusting the angle, the direction of the light beam reflected by the polygon mirror can be made constant. According to this method, the direction of the light beam reflected by the polygon mirror can be made constant. This can be done by adjusting the inclination angle of the reflective surface.
（実施例）
以下添付図面を参照して本発明のポリゴンミラの面倒れ
補正の構成について説明する。(Example) The configuration of correcting the tilt of the polygon mirror according to the present invention will be described below with reference to the accompanying drawings.
第１図は、本発明に係るポリゴンミラの平面図で、第２
図は第１図のＡ−Ａ ’の線に沿った断面図、第３図は
第２図の一部拡大図、第４図は定板上に配設したポリゴ
ンミラの側面図、第５図は定板上に配設したポリゴンミ
ラの平面図である。ポリゴンミラ２の各々の面４の所定
位置に縦方向のスリット６を設ける。このスリット６を
へだてて区劃されたポリゴンミラ２の面に後述する傾斜
調、整自在の反射表面部５が形成される。この縦方向の
スリット６の一端底部はポリゴンミラ２と連結部８によ
り連結され、又スリット６の他端部には開口部１０が構
成される。FIG. 1 is a plan view of a polygon mirror according to the present invention, and FIG.
The figure is a sectional view taken along the line A-A' in Figure 1, Figure 3 is a partially enlarged view of Figure 2, Figure 4 is a side view of the polygon mirror arranged on the fixed plate, and Figure 5 is a side view of the polygon mirror arranged on the fixed plate. The figure is a plan view of a polygon mirror placed on a fixed plate. A vertical slit 6 is provided at a predetermined position on each surface 4 of the polygon mirror 2. On the surface of the polygon mirror 2 separated by the slit 6, a reflective surface portion 5 whose inclination can be adjusted and adjusted as described later is formed. The bottom of one end of the vertical slit 6 is connected to the polygon mirror 2 by a connecting portion 8, and the other end of the slit 6 is formed with an opening 10.
前記開口部１０に近接したポリゴンミラ２の反射表面部
５の所定位置に等間隔に複数のねじ孔１２を穿設する。A plurality of screw holes 12 are bored at equal intervals at predetermined positions in the reflective surface portion 5 of the polygon mirror 2 close to the opening 10.
これらのねじ孔１２に調整用小ねじ１４を螺合させる。Adjustment screws 14 are screwed into these screw holes 12.
小ねじ１４をねじ孔１２に螺合して前進、後退すること
により、ポリゴンミラ２の反射表面部５の傾斜角度を調
整できる。By screwing the machine screw 14 into the screw hole 12 and moving it forward and backward, the inclination angle of the reflective surface portion 5 of the polygon mirror 2 can be adjusted.
すなわち、ねじ孔１２に小ねじ１４を螺合させて、小ね
じ１４の先端が縦スリット６を横ぎって縦スリット６の
内側面１６に当接させて後、更に小ねじ１４を前進する
とポリゴンミラ２の反射表面部５は外方にそり返ってＳ
の方向へ傾斜を形成し、又反対に小ねじ１４を前述と反
対方向へ後退させるとポリゴンミラ２の反射表面部５は
前述と反対にＳ′の方向へ傾斜を形成する。That is, after the machine screw 14 is screwed into the screw hole 12 and the tip of the machine screw 14 crosses the vertical slit 6 and comes into contact with the inner surface 16 of the vertical slit 6, when the machine screw 14 is further advanced, the polygon The reflective surface portion 5 of Mira 2 is curved outward and S
When the machine screw 14 is retreated in the direction opposite to that described above, the reflective surface portion 5 of the polygon mirror 2 forms an inclination in the direction S' opposite to that described above.
この様にして小ねじ１４をねじ孔１２内で前進、後退さ
せることにより、ポリゴンミラ２の反射表面部５の傾斜
角度を調整することができる。By moving the machine screw 14 forward and backward within the screw hole 12 in this manner, the inclination angle of the reflective surface portion 5 of the polygon mirror 2 can be adjusted.
以上のように構成したポリゴンミラ２を採用して、反射
ビームを調整し、ポリゴンミラ２の面倒れを補正する場
合について説明する。第４図、第５図において、定板１
８上に取りつけたスキャナモータ２０に回転軸２２によ
り連結したポリゴンミラ２の反射表面部５に光源２４よ
り出たビーム２６が反射し、反射ビーム２８となり、こ
の反射ビーム２８の光路上に設けたビーム感光体３０へ
入射し、結像する。A case will be described in which the polygon mirror 2 configured as described above is employed, the reflected beam is adjusted, and the tilt of the surface of the polygon mirror 2 is corrected. In Figures 4 and 5, the fixed plate 1
The beam 26 emitted from the light source 24 is reflected by the reflective surface portion 5 of the polygon mirror 2 connected to the scanner motor 20 mounted on the scanner motor 20 by the rotation shaft 22, and becomes a reflected beam 28. The beam enters the photoreceptor 30 and is imaged.
ところが、スキャナモータ２０の回転軸の狂い等に起因
して、ポリゴンミラ２０回転中に面倒れ現象が発生する
と、反射ビーム２８の光ビーム感光体３０での受光位置
に狂いが生じ、光ビームの感光ドラム上における結像に
不具合が発生する。However, if a surface tilt phenomenon occurs while the polygon mirror 20 is rotating due to an error in the rotational axis of the scanner motor 20, the receiving position of the reflected beam 28 on the light beam photoreceptor 30 will be incorrect, and the light beam will be distorted. A problem occurs in image formation on the photosensitive drum.
本発明においては、上述の面倒れによる光ビームの感光
体３０における受光点誤差をなくすために、ポリゴンミ
ラ２の表面部５の傾斜角度を調整するものである。その
調整については、既に説明した通りである。In the present invention, the inclination angle of the surface portion 5 of the polygon mirror 2 is adjusted in order to eliminate the error in the light receiving point of the light beam on the photoreceptor 30 due to the above-mentioned surface tilt. The adjustment has already been explained.
（効 果）
本発明の構成によれば、ポリゴンミラ側面にスラスト方
向に設けたスリットの巾を調整して、ポリゴンミラの反
射表面部の傾斜角度を加減することにより感光体におけ
る受光位置を一定となし、ポリゴンミラの面倒れの補正
を容易に実施できるから、従来例のように別に複雑な補
正用シリンドリカルレンズ群を採用する必要はない、又
スリット巾を調整することは、スリットより区劃された
反射表面部にラジアル方向へ穿設したねじ孔に、ねじを
螺合して前進し、後退せしめることにより極めて簡単に
実施できる等の効果もある。(Effects) According to the configuration of the present invention, the light receiving position on the photoreceptor can be kept constant by adjusting the width of the slit provided in the thrust direction on the side surface of the polygon mirror and adjusting the inclination angle of the reflective surface of the polygon mirror. Therefore, since it is easy to correct the tilt of the polygon mirror's surface, there is no need to use a separate complicated correction cylindrical lens group as in the conventional example, and adjusting the slit width is more convenient than the slit. It also has the advantage that it can be carried out extremely easily by screwing screws into screw holes drilled in the radial direction of the reflective surface portion and moving them forward and backward.
総じて、本発明は従来例のものと比較して構成がシンプ
ルで、製造コストの低減を計ることが可能である。Overall, the present invention has a simpler configuration than conventional examples, and can reduce manufacturing costs.
添付図面は本発明に係るポリゴンミラの面倒れ補正機構
の実施例を図示する。
第１図はポリゴンミラの平面図。
第２図は第１図のＡ−Ａ ’の線に沿った断面図。
第３図は第２図の一部拡大図。
第４図はポリゴンミラを組込んだ光偏向器の側面図。
第５図は第４図の平面図。
２・・・ポリゴンミラ、５・・・反射表面部、６・・・
スリット、８・・・連結部、１０・・・開口部、１２・
・・ねじ孔、１４・・・小ねじ、１６・・・スリット内
側面、１８・・・定板、２０・・・スキャナモータ、２
４・・・光源、２６・・・入射ビーム、２８・・・反射
ビーム、３０・・・感光体。
第１図
４３図
第４図
第 ２ ズ
名 ５ ｚ
８−・漣糾粋
２６・・・へ１ビー−
２８−・反射σ鴎
３０・・・叔兄イネThe accompanying drawings illustrate an embodiment of a polygon mirror surface tilt correction mechanism according to the present invention. Figure 1 is a plan view of Polygon Mira. FIG. 2 is a sectional view taken along line A-A' in FIG. Figure 3 is a partially enlarged view of Figure 2. FIG. 4 is a side view of an optical deflector incorporating a polygon mirror. FIG. 5 is a plan view of FIG. 4. 2... Polygon mirror, 5... Reflective surface portion, 6...
Slit, 8... Connecting portion, 10... Opening, 12.
...screw hole, 14...machine screw, 16...slit inner surface, 18...fixed plate, 20...scanner motor, 2
4... Light source, 26... Incident beam, 28... Reflected beam, 30... Photoreceptor. Figure 1 Figure 43 Figure 4 Figure 2 Name 5 z 8-・Ren Shusui 26...He1 Bee- 28-・Reflection σ 30...Uncle Ine
Claims (1)
光レンズ系を用いて感光体で結像せしめる光ビーム走査
装置において、ポリゴンミラの側面にスラスト方向にス
リットを設け、このスリットの巾を調整することにより
、ポリゴンミラの各面の反射表面部の傾斜角度を変え、
ポリゴンミラの各面での反射表面部で反射する光ビーム
の方向を一定とすることを特徴とするポリゴンミラの面
倒れ補正機構。 ２、一端部をポリゴンミラと連結し、他端部を開口部に
形成してなるスリットと前記スリットによりポリゴンミ
ラより区劃された反射表面部と前記反射表面部にラジア
ル方向に設けたねじ孔とこのねじ孔に螺合自在のねじと
を有し、ねじ孔とねじとの螺合度を調整することにより
、前記反射表面部の傾斜角度を調整することを特徴とす
るポリゴンミラの面倒れ補正機構。[Claims] 1. In a light beam scanning device that reflects a light beam from a light source on a polygon mirror and forms an image on a photoreceptor using a condensing lens system, a slit is provided on the side surface of the polygon mirror in the thrust direction. By adjusting the width of this slit, the inclination angle of the reflective surface of each face of the polygon mirror can be changed,
A surface tilt correction mechanism for a polygon mirror, characterized in that the direction of a light beam reflected by a reflective surface on each face of the polygon mirror is made constant. 2. A slit with one end connected to the polygon mirror and the other end formed into an opening, a reflective surface portion separated from the polygon mirror by the slit, and a screw hole provided in the reflective surface portion in the radial direction. and a screw that can be freely engaged with the screw hole, and the inclination angle of the reflective surface portion is adjusted by adjusting the degree of screw engagement between the screw hole and the screw. mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10082089A JPH02278221A (en) | 1989-04-20 | 1989-04-20 | Correcting mechanism for surface inclination of polygon mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10082089A JPH02278221A (en) | 1989-04-20 | 1989-04-20 | Correcting mechanism for surface inclination of polygon mirror |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02278221A true JPH02278221A (en) | 1990-11-14 |
Family
ID=14283978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10082089A Pending JPH02278221A (en) | 1989-04-20 | 1989-04-20 | Correcting mechanism for surface inclination of polygon mirror |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02278221A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0493816U (en) * | 1990-12-28 | 1992-08-14 | ||
| JPH06175062A (en) * | 1992-12-08 | 1994-06-24 | Matsushita Electric Ind Co Ltd | Polygon mirror |
-
1989
- 1989-04-20 JP JP10082089A patent/JPH02278221A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0493816U (en) * | 1990-12-28 | 1992-08-14 | ||
| JPH06175062A (en) * | 1992-12-08 | 1994-06-24 | Matsushita Electric Ind Co Ltd | Polygon mirror |
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