JP2002072123A - Optical scanning apparatus - Google Patents
Optical scanning apparatusInfo
- Publication number
- JP2002072123A JP2002072123A JP2000258352A JP2000258352A JP2002072123A JP 2002072123 A JP2002072123 A JP 2002072123A JP 2000258352 A JP2000258352 A JP 2000258352A JP 2000258352 A JP2000258352 A JP 2000258352A JP 2002072123 A JP2002072123 A JP 2002072123A
- Authority
- JP
- Japan
- Prior art keywords
- polygon mirror
- elastic member
- lid member
- scanning
- light
- 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.)
- Withdrawn
Links
Landscapes
- Laser Beam Printer (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、レーザプリンタや
レーザファクシミリ等の画像形成装置に用いられる走査
光学装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scanning optical device used for an image forming apparatus such as a laser printer and a laser facsimile.
【０００２】[0002]
【従来の技術】レーザプリンタやレーザファクシミリ等
の画像形成装置に用いられる走査光学装置は、図８に示
すように、半導体レーザ１０１から発生されたレーザ光
をコリメータレンズ１０２ａによって平行化し、アパー
チャ１０２ｂによってビーム形状を整えた上でシリンド
リカルレンズ１０２ｃによって線状の光束に集光し、回
転多面鏡１０３によってその回転軸に沿った方向（Ｚ軸
方向）に垂直な所定の方向（Ｙ軸方向）に偏向走査し、
結像レンズ系１０４を経て回転ドラム１０５上の感光体
に結像させる。そして、回転ドラム１０５の感光体に結
像する光束は、回転多面鏡１０３の回転によるＹ軸方向
の主走査と回転ドラム１０５の回転によるＺ軸方向の副
走査に伴って回転ドラム１０５上に静電潜像を形成す
る。2. Description of the Related Art As shown in FIG. 8, a scanning optical device used in an image forming apparatus such as a laser printer or a laser facsimile collimates a laser beam generated from a semiconductor laser 101 by a collimator lens 102a and collimates the laser beam by an aperture 102b. After adjusting the beam shape, the beam is condensed into a linear light beam by the cylindrical lens 102c, and deflected by the rotary polygon mirror 103 in a predetermined direction (Y-axis direction) perpendicular to the direction along the rotation axis (Z-axis direction). Scan,
An image is formed on the photoreceptor on the rotating drum 105 via the image forming lens system 104. The light flux imaged on the photoreceptor of the rotating drum 105 is statically moved on the rotating drum 105 with the main scanning in the Y-axis direction by the rotation of the rotating polygon mirror 103 and the sub-scanning in the Z-axis direction by the rotation of the rotating drum 105. An electrostatic latent image is formed.
【０００３】以上のようにして、回転ドラム１０５の感
光体に画像情報を書き込む操作が繰り返されるが、回転
多面鏡１０３の反射面の分割誤差のために回転ドラム１
０５上の書き出し位置がずれる可能性がある。As described above, the operation of writing image information on the photosensitive member of the rotating drum 105 is repeated.
05 may be shifted.
【０００４】そこで、回転多面鏡１０３の走査光Ｌ0 を
その走査面（ＸＹ平面）のＹ軸方向の一端においてＢＤ
ミラー１０６によって前記走査面の下方へ分離し、この
分離された走査光Ｌ0 を集光レンズ１０６ａを経てＢＤ
センサ１０７に導入し、不図示のコントローラにおいて
走査開始信号に交換して半導体レーザ１０１に送信する
ことが行われている。この場合、半導体レーザ１０１
は、走査開始信号を受信した上で書き込み変調を開始す
る。尚、結像レンズ系１０４は、球面レンズ１０４ａと
トーリックレンズ１０４ａから成り、回転多面鏡１０３
によって等角速度で走査される走査光Ｌ0 を、回転ドラ
ム１０５上においてＹ軸方向に等速度で走査する走査光
に変換する所謂ｆθ機能を有している。Therefore, the scanning light L0 of the rotary polygon mirror 103 is applied to the BD (Y-axis direction) at one end of the scanning plane (XY plane) in the Y-axis direction.
The mirror 106 separates the scanning light L0 below the scanning surface, and separates the separated scanning light L0 through the condenser lens 106a into the BD.
It is introduced into the sensor 107, and is exchanged with a scanning start signal and transmitted to the semiconductor laser 101 by a controller (not shown). In this case, the semiconductor laser 101
Starts the write modulation after receiving the scanning start signal. The imaging lens system 104 includes a spherical lens 104a and a toric lens 104a.
Has a so-called fθ function of converting scanning light L0 scanned at a constant angular speed into scanning light scanning at a constant speed in the Y-axis direction on the rotating drum 105.
【０００５】ところで、半導体レーザ１０１、シリンド
リカルレンズ１０２ｃ、回転多面鏡１０３、結像レンズ
系１０４、ＢＤミラー１０６及びＢＤセンサ１０７等は
図９に示す光学箱１１０の側壁や底壁に取り付けられ
る。回転ドラム１０５は光学箱１１０の外側に配設され
ており、光学箱１１０の側壁等には、走査光Ｌ0 を光学
箱１１０から回転ドラム１０５に向かって取り出すため
の窓が設けられている。そして、光学箱１１０の上部の
開口は蓋部材１２０によって閉塞されている。A semiconductor laser 101, a cylindrical lens 102c, a rotary polygon mirror 103, an imaging lens system 104, a BD mirror 106, a BD sensor 107, and the like are mounted on a side wall or a bottom wall of an optical box 110 shown in FIG. The rotating drum 105 is provided outside the optical box 110, and a window for extracting the scanning light L0 from the optical box 110 toward the rotating drum 105 is provided on a side wall or the like of the optical box 110. The upper opening of the optical box 110 is closed by the lid member 120.
【０００６】又、回転多面鏡１０３を回転駆動するモー
タ１０３ａは、光学箱１１０の底壁に支持されたモータ
ハウジング１０３ｂと、これと一体に設けられたモータ
基板１０３ｃに実装された不図示の駆動回路と、該駆動
回路の駆動電流によって励磁されるステータ１０３ｄ及
びこれに対向するロータ１０３ｅ等から成る磁気回路に
よって構成されている。ここで、ステータ１０３ｄは、
モータ基板１０３ｃに立設されたステータコアとこれに
巻き付けられたステータコイルを有し、又、ロータ１０
３ｅは、回転軸１０３ｆと一体に形成された座金に固着
され、回転多面鏡１０３は、押えバネ１０３ｇ等を有す
る弾性押圧機構によって座金に押圧され、該座金を介し
てロータ１０３ｅに一体的に結合されている。そして、
ステータ１０３ｄが励磁されると、ロータ１０３ｅと共
に回転多面鏡１０３が一体となって回転する。A motor 103a for rotatingly driving the rotary polygon mirror 103 includes a motor housing 103b supported on the bottom wall of the optical box 110 and a drive board (not shown) mounted on a motor board 103c provided integrally therewith. And a magnetic circuit including a stator 103d excited by a drive current of the drive circuit and a rotor 103e opposed thereto. Here, the stator 103d is
It has a stator core erected on the motor substrate 103c and a stator coil wound therearound.
3e is fixed to a washer formed integrally with the rotating shaft 103f, and the rotating polygon mirror 103 is pressed by the washer by an elastic pressing mechanism having a holding spring 103g and the like, and is integrally connected to the rotor 103e via the washer. Have been. And
When the stator 103d is excited, the rotary polygon mirror 103 rotates integrally with the rotor 103e.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記従
来の走査光学装置においては、回転多面鏡１０３を回転
させると光学箱１１０と蓋部材１２０の間の隙間から外
気が吸引され、外気中の浮遊塵埃等が回転多面鏡１０３
の反射面に付着する。このように、回転多面鏡１０３の
反射面が浮遊塵埃等によって汚染されると、その反射率
が低下して画像不良等が引き起こされるという問題が発
生する。However, in the above-described conventional scanning optical apparatus, when the rotary polygon mirror 103 is rotated, outside air is sucked from a gap between the optical box 110 and the cover member 120, and floating dust in the outside air is sucked. Etc. are rotating polygon mirrors 103
Adheres to the reflective surface. As described above, when the reflecting surface of the rotary polygon mirror 103 is contaminated with floating dust or the like, the reflectance is reduced and a problem such as image failure is caused.
【０００８】そこで、光学箱１１０と蓋部材１２０の間
を密封するために両者の間にウレタンフォーム等の弾性
部材を挟み込む方法が開発された。具体的には、蓋部材
１２０の光学箱１１０側の面に弾性部材を全面に亘って
貼り付け、この蓋部材１２０を光学箱１１０に取り付け
る方法である。Accordingly, a method has been developed in which an elastic member such as urethane foam is sandwiched between the optical box 110 and the lid member 120 in order to seal the space between them. Specifically, an elastic member is attached to the entire surface of the cover member 120 on the optical box 110 side, and the cover member 120 is attached to the optical box 110.
【０００９】ところで、近年、画像形成装置の高精細化
や高速化と共に再生性や廃棄物の分別処理性を重視した
設計も重要とされている。Meanwhile, in recent years, it has become important to design an image forming apparatus that emphasizes reproducibility and waste separation processing as well as high definition and high speed.
【００１０】しかし、従来のように蓋部材に弾性部材を
全面に亘って貼り付ける方法を採用すると、光学箱を分
解して再生することが困難になる。However, if a method of pasting the elastic member over the entire surface of the lid member as in the conventional case is adopted, it becomes difficult to disassemble and reproduce the optical box.
【００１１】本発明は上記問題に鑑みてなされたもの
で、その目的とする処は、本来の機能を損なうことな
く、再生時の作業性を向上させることができる走査光学
装置を提供するすることにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a scanning optical device capable of improving workability during reproduction without impairing its original function. It is in.
【００１２】[0012]
【課題を解決するための手段】上記目的を達成するた
め、請求項１記載の発明は、光源ユニットから出射され
た光ビームを偏向走査する回転多面鏡と、該回転多面鏡
を回転駆動する駆動手段と、前記回転多面鏡によって偏
向走査された走査光を感光体に結像させる結像手段と、
該結像手段と前記回転多面鏡を収容する光学箱と、該光
学箱を閉塞する蓋部材と、該蓋部材と前記光学箱の間を
密閉する弾性部材を有して成る走査光学装置において、
前記弾性部材と前記蓋部材を部分的に接着したことを特
徴とする。In order to achieve the above object, the present invention is directed to a rotary polygon mirror for deflecting and scanning a light beam emitted from a light source unit, and a drive for rotating and driving the rotary polygon mirror. Means, and image forming means for forming an image on a photoconductor of the scanning light deflected by the rotating polygon mirror,
An optical box containing the imaging means and the rotary polygon mirror, a lid member for closing the optical box, and an elastic member for sealing the space between the lid member and the optical box.
The elastic member and the lid member are partially adhered.
【００１３】請求項２記載の発明は、請求項１記載の発
明において、前記蓋部材と前記弾性部材の間の一部に、
前記弾性部材に接着されたシート部材を挟み込んだこと
を特徴とする。According to a second aspect of the present invention, in the first aspect of the present invention, a part between the lid member and the elastic member includes:
A sheet member bonded to the elastic member is sandwiched.
【００１４】請求項３記載の発明は、請求項１又は２記
載の発明において、前記弾性部材と前記蓋部材が接着さ
れない部分を光ビーム出射光路の近傍と光走査領域及び
前記結像手段の回転多面鏡側を除く領域の一部に配置し
たことを特徴とする。According to a third aspect of the present invention, in the first or second aspect of the present invention, the portion where the elastic member and the lid member are not bonded is formed in the vicinity of a light beam emitting optical path, a light scanning area, and the image forming means. It is characterized in that it is arranged in a part of the area except for the rotary polygon mirror side.
【００１５】従って、本発明によれば、走査光学装置の
再生時には蓋部材と弾性部材の接着されていない部分を
起点として蓋部材と弾性部材を容易に分離することがで
き、走査光学装置本来の機能を損なうことなく、再生時
の作業性を向上させることができる。Therefore, according to the present invention, at the time of reproduction of the scanning optical device, the lid member and the elastic member can be easily separated from the portion where the lid member and the elastic member are not bonded, and the original scanning optical device can be separated. Workability during reproduction can be improved without impairing the function.
【００１６】[0016]
【発明の実施の形態】以下に本発明の実施の形態を添付
図面に基づいて説明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１７】＜実施の形態１＞図１は本発明の実施の形
態１に係る走査光学装置の平面図、図２は同走査光学装
置の断面図であり、本実施の形態に係る走査光学装置に
おいては、半導体レーザ１から発生された光ビームであ
るレーザ光Ｌ1 はコリメータレンズ１ａによって平行化
され、シリンドリカルレンズ２によって線状の光束に集
光されて回転多面鏡３の反射面に入射する。そして、レ
ーザ光Ｌ1 の反射光は、回転多面鏡３の回転によって偏
向走査されてＹ軸方向（主走査方向）の走査光となり、
結像手段である結像レンズ系４と折り返しミラー５を経
て不図示の回転ドラム上の感光体に結像する。感光体に
結像する光束は、回転多面鏡３の回転によるＹ軸方向の
主走査と回転ドラムの回転によるＺ軸方向の副走査に伴
って回転ドラム上に静電潜像を形成する。<First Embodiment> FIG. 1 is a plan view of a scanning optical device according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the same scanning optical device. In the above, the laser beam L1 which is a light beam generated from the semiconductor laser 1 is collimated by the collimator lens 1a, condensed into a linear light beam by the cylindrical lens 2, and is incident on the reflection surface of the rotary polygon mirror 3. The reflected light of the laser light L1 is deflected and scanned by the rotation of the rotary polygon mirror 3 to become scanning light in the Y-axis direction (main scanning direction).
An image is formed on a photoreceptor on a rotating drum (not shown) via an image forming lens system 4 serving as an image forming means and a folding mirror 5. The light flux formed on the photoreceptor forms an electrostatic latent image on the rotating drum with the main scanning in the Y-axis direction by the rotation of the rotating polygon mirror 3 and the sub-scanning in the Z-axis direction by the rotation of the rotating drum.
【００１８】ところで、図示しないが、回転ドラムの周
辺には、回転ドラムの感光体表面を一様に帯電する帯電
装置、感光体表面に形成される静電潜像をトナー像に顕
像化するための現像装置、前記トナー像を記録紙等の記
録媒体に転写する転写装置等が配置されており、これら
の作用によって、半導体レーザ１が発生する光束に対応
する記録情報が記録紙等にプリントされる。By the way, though not shown, a charging device for uniformly charging the surface of the photosensitive drum of the rotating drum is provided around the rotating drum, and an electrostatic latent image formed on the surface of the photosensitive drum is visualized as a toner image. And a transfer device for transferring the toner image to a recording medium such as recording paper, etc., and the recording information corresponding to the luminous flux generated by the semiconductor laser 1 is printed on the recording paper or the like by these actions. Is done.
【００１９】而して、半導体レーザ１やシリンドリカル
レンズ２、回転多面鏡３、結像レンズ系４等は合成樹脂
製の光学箱１０の側壁や底壁に取り付けられている。回
転ドラムは光学箱１０の外側に配設されており、光学箱
１０の側壁等には、走査光を光学箱１０から回転ドラム
に向かって取り出すための窓が設けられている。又、光
学箱１０の上部の開口は図２に示す蓋部材２０によって
閉塞され、蓋部材２０は光学箱１０との間に弾性部材２
１を挟み込み、周縁部において光学箱１０にビス止めさ
れる。The semiconductor laser 1, the cylindrical lens 2, the rotary polygon mirror 3, the imaging lens system 4 and the like are mounted on the side and bottom walls of an optical box 10 made of synthetic resin. The rotating drum is provided outside the optical box 10, and a window for extracting scanning light from the optical box 10 toward the rotating drum is provided on a side wall or the like of the optical box 10. The upper opening of the optical box 10 is closed by a lid member 20 shown in FIG.
1 is sandwiched and screwed to the optical box 10 at the periphery.
【００２０】結像レンズ系４は、球面レンズ４ａとトー
リックレンズ４ｂから成り、回転多面鏡３によって等角
速度で走査される走査光を回転ドラム上においてＹ軸方
向に等速度で走査する走査光に変換する所謂ｆθ機能を
有している。The imaging lens system 4 is composed of a spherical lens 4a and a toric lens 4b. Scanning light scanned at a constant angular speed by the rotary polygon mirror 3 is converted into scanning light scanned at a constant speed in the Y-axis direction on the rotating drum. It has a so-called fθ function for conversion.
【００２１】図２に示すように、回転多面鏡３を回転駆
動する駆動手段であるモータ３ａは、光学箱１０の底壁
に支持されたモータハウジング３ｂと、これに一体に設
けられたモータ基板３ｃに実装された不図示の駆動回路
と、該駆動回路の駆動電流によって励磁されるステータ
３ｄ及びこれに対向するロータ３ｅ等から成る磁気回路
によって構成されている。ここで、ステータ３ｄは、モ
ータ基板３ｃに立設されたステータコアとこれに巻き付
けられたステータコイルを有し、ロータ３ｅは、回転軸
３ｆと一体である座金に固着されている。又、回転多面
鏡３は、押えバネ３ｇ等を有する弾性押圧機構によって
座金に押圧され、該座金を介してロータ３ｅに一体的に
結合されている。そして、ステータ３ｄが励磁される
と、ロータ３ｅと回転多面鏡３が一体となって回転す
る。As shown in FIG. 2, a motor 3a, which is a driving means for rotating the rotary polygon mirror 3, is provided with a motor housing 3b supported on the bottom wall of the optical box 10 and a motor board provided integrally therewith. 3c, a driving circuit (not shown) mounted thereon, and a magnetic circuit including a stator 3d excited by a driving current of the driving circuit and a rotor 3e opposed thereto. Here, the stator 3d has a stator core erected on the motor substrate 3c and a stator coil wound therearound, and the rotor 3e is fixed to a washer integral with the rotating shaft 3f. The rotary polygon mirror 3 is pressed by a washer by an elastic pressing mechanism having a holding spring 3g and the like, and is integrally connected to the rotor 3e via the washer. When the stator 3d is excited, the rotor 3e and the rotary polygon mirror 3 rotate integrally.
【００２２】ところで、前記弾性部材２１はポリウレタ
ンフォームでシート状に構成されており、蓋部材２０と
光学箱１０の間に該弾性部材２１を挟み込んで蓋部材２
０を光学箱１０にビス止めすると、弾性部材２１が圧縮
されて弾性変形し、これによって蓋部材２０と光学箱１
０の間が密封される。具体的には、球面レンズ４ａとそ
の上に設けられたスポンジ状の部材９と、光学箱１０及
び弾性部材２１とで回転多面鏡３を密閉している。The elastic member 21 is formed of a sheet of polyurethane foam, and the elastic member 21 is sandwiched between the cover member 20 and the optical box 10 to cover the cover member 2.
When the optical member 10 is screwed to the optical box 10, the elastic member 21 is compressed and elastically deformed.
0 is sealed. Specifically, the rotating polygon mirror 3 is hermetically sealed by the spherical lens 4a, the sponge-like member 9 provided thereon, the optical box 10 and the elastic member 21.
【００２３】図３は蓋部材２０の斜視図であり、該蓋部
材２０と弾性部材２１は端部２２を除く全面で接着され
ている。接着されていない端部２２は、組み付け等によ
って弾性部材２１が光学箱１０内に折れて入り込み、こ
れによって密閉度が低下したり、走査光と干渉したりす
ることがないように設計される。具体的には、接着され
ない端部２２を密閉空間に接しないように、且つ、走査
光を遮ることがないように配置する。FIG. 3 is a perspective view of the lid member 20, and the lid member 20 and the elastic member 21 are bonded to each other except for the end 22. The end 22 that is not bonded is designed so that the elastic member 21 does not break into the optical box 10 due to assembling or the like, thereby reducing the sealing degree or interfering with the scanning light. Specifically, the end 22 that is not adhered is arranged so as not to be in contact with the closed space and so as not to block the scanning light.
【００２４】図４に弾性部材２１が光学箱１０内に折れ
て入り込んだために密閉性が低下した状態を示す。図４
は回転多面鏡３側を密閉する蓋部材２０の端部を接着し
ない場合、組み付けの失敗によって弾性部材２１が光学
箱１０内に落ち込んだ状態を示しており、この状態では
蓋部材２０と光学箱１０の間に隙間が発生し、外気中の
浮遊塵埃等が隙間から侵入して回転多面鏡３の反射面等
に付着することになり、画像劣化の原因となる。FIG. 4 shows a state in which the elastic member 21 is broken into the optical box 10 and the hermeticity is reduced. FIG.
FIG. 3 shows a state in which the elastic member 21 has fallen into the optical box 10 due to a failure in assembling when the end of the lid member 20 for sealing the rotary polygon mirror 3 is not bonded. In this state, the lid member 20 and the optical box A gap is generated between the mirrors 10, and floating dust and the like in the outside air enter through the gap and adhere to the reflection surface of the rotary polygon mirror 3, which causes image deterioration.
【００２５】図５に密閉度の低下と走査光の干渉を回避
した例を示すが、接着されない部分は図３に示す端部２
２であり、この接着されない部分は蓋部材２０と光学箱
１０を組み付けたときに折り返しミラー５の上部に位置
する。接着されていない部分は端部から回転多面鏡側
（図中Ｘ方向）に約１５ｍｍ程度であり、密閉空間に接
しない。折り返しミラー５の近傍は、走査光を外部に出
射するための窓が設けられていることから密閉性が低い
ため、上記弾性部材２１の落ち込みによる影響は少な
い。又、組み付けの失敗で弾性部材２１が光学箱１０内
に入り込んでも、折り返しミラー５の背中面に当たるこ
とによって走査光を遮ることはない。FIG. 5 shows an example in which the sealing degree is reduced and the interference of the scanning light is avoided.
2, the non-adhered portion is located above the folding mirror 5 when the lid member 20 and the optical box 10 are assembled. The part that is not adhered is about 15 mm from the end toward the rotary polygon mirror (in the X direction in the figure) and does not touch the closed space. The vicinity of the folding mirror 5 is provided with a window for emitting the scanning light to the outside, so that the sealing property is low. Therefore, the influence of the depression of the elastic member 21 is small. Further, even if the elastic member 21 enters the optical box 10 due to a failure in assembly, the scanning light is not blocked by hitting the back surface of the folding mirror 5.
【００２６】接着の強度は蓋部材２０と弾性部材２１の
降伏点より低い値である。The bonding strength is lower than the yield point of the lid member 20 and the elastic member 21.
【００２７】蓋部材２０と弾性部材２１が全面で接着さ
れている構成の場合、蓋部材２０と弾性部材２１を分割
することが難しくなり、各々の部材を再利用するのに障
害となる。In the case where the lid member 20 and the elastic member 21 are bonded to each other over the entire surface, it is difficult to divide the lid member 20 and the elastic member 21, which hinders reuse of each member.
【００２８】そこで、蓋部材２０と弾性部材２１を接着
する際、端部２２のみを接着しないことで分離が容易に
なる。具体的には、接着されていない端部２２を分離時
の起点とし、接着されていない端部２２を手で保持して
引き剥すことによって蓋部材２０と弾性部材２１を簡単
に分離することができる。因に、従来のように全面で接
着する場合は、分離時の起点と保持部が無いないために
作業性が悪い。Therefore, when the lid member 20 and the elastic member 21 are bonded, separation is facilitated by not bonding only the end portion 22. Specifically, it is possible to easily separate the lid member 20 and the elastic member 21 by holding the unbonded end 22 as a starting point at the time of separation and holding the unbonded end 22 by hand and peeling it off. it can. However, in the case where the entire surface is bonded as in the related art, workability is poor because there is no starting point and a holding portion at the time of separation.
【００２９】このように、蓋部材２０と弾性部材２１が
端部を除いて全面で接着される構成を採用することによ
って、製品に必要とされている機能を損なうことなく、
各々の部材を分解し易くして資源の再生性を向上させる
ことができる。As described above, by adopting a configuration in which the lid member 20 and the elastic member 21 are adhered on the entire surface except for the ends, the function required for the product is not impaired.
Each member can be easily disassembled, and the renewability of resources can be improved.
【００３０】＜実施の形態２＞次に、本発明の実施の形
態２を図６及び図７に基づいて説明する。図６は本実施
の形態に係る走査光学装置の部分断面図、図７は斜視図
である。Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a partial cross-sectional view of the scanning optical device according to the present embodiment, and FIG. 7 is a perspective view.
【００３１】本実施の形態に係る走査光学装置において
は、ポリウレタンフォーム３１ａの一部にＰＥＴ等のシ
ート部材３１ｂを貼り合わせた弾性部材３１を板金製の
蓋部材３２の原材に貼り付けて積層体を製作し、その積
層体を蓋部材３２の形状にプレス成形３３している。蓋
部材３２の形状にプレスした際、シート部材３１ｂが蓋
部材３２の端部に位置し、弾性部材３１と板金製の蓋部
材３２との貼り付きを防いでいる。尚、シート部材３１
ｂの厚みは１０〜１００μｍ程度のものである。In the scanning optical device according to the present embodiment, an elastic member 31 in which a sheet member 31b such as PET is attached to a part of a polyurethane foam 31a is attached and laminated on a raw material of a sheet metal lid member 32. A body is manufactured, and the laminated body is press-formed 33 into the shape of the lid member 32. When pressed into the shape of the lid member 32, the sheet member 31b is located at the end of the lid member 32, thereby preventing sticking of the elastic member 31 and the lid member 32 made of sheet metal. The sheet member 31
The thickness of b is about 10 to 100 μm.
【００３２】而して、本実施の形態によれば、蓋部材３
２と弾性部材３１を全面に貼り付けている工程に対し、
ポリウレタンフォーム３１ａと板金製の蓋部材３２の間
にシート部材３１ｂを挟み込むことによって分離時の保
持部が補強され、ポリウレタンフォーム３１ａの破損を
回避することができるために再生時の作業性が更に高め
られる。Thus, according to the present embodiment, the lid member 3
2 and the step of attaching the elastic member 31 to the entire surface,
By holding the sheet member 31b between the polyurethane foam 31a and the cover member 32 made of sheet metal, the holding portion at the time of separation is reinforced, and breakage of the polyurethane foam 31a can be avoided. Can be
【００３３】[0033]
【発明の効果】以上の説明で明らかなように、本発明に
よれば、光源ユニットから出射された光ビームを偏向走
査する回転多面鏡と、該回転多面鏡を回転駆動する駆動
手段と、前記回転多面鏡によって偏向走査された走査光
を感光体に結像させる結像手段と、該結像手段と前記回
転多面鏡を収容する光学箱と、該光学箱を閉塞する蓋部
材と、該蓋部材と前記光学箱の間を密閉する弾性部材を
有して成る走査光学装置において、前記弾性部材と前記
蓋部材を部分的に接着したため、該走査光学装置本来の
機能を損なうことなく、再生時の作業性を向上させるこ
とができるという効果が得られる。As is apparent from the above description, according to the present invention, a rotary polygon mirror for deflecting and scanning a light beam emitted from a light source unit, a driving means for rotating and driving the rotary polygon mirror, Image forming means for forming an image of the scanning light deflected by the rotary polygon mirror on the photosensitive member, an optical box accommodating the image forming means and the rotary polygon mirror, a lid member for closing the optical box, and the lid In a scanning optical device having an elastic member that seals a space between a member and the optical box, the elastic member and the lid member are partially adhered to each other, so that the original function of the scanning optical device can be reduced during reproduction. The effect that the workability of can be improved can be obtained.
【図１】本発明の実施の形態１に係る走査光学装置の平
面図である。FIG. 1 is a plan view of a scanning optical device according to a first embodiment of the present invention.
【図２】本発明の実施の形態１に係る走査光学装置の断
面図である。FIG. 2 is a cross-sectional view of the scanning optical device according to the first embodiment of the present invention.
【図３】本発明の実施の形態１に係る走査光学装置の蓋
部材と弾性部材の斜視図である。FIG. 3 is a perspective view of a lid member and an elastic member of the scanning optical device according to the first embodiment of the present invention.
【図４】走査光学装置の蓋部材の端部を接着しない場合
に組み付けの失敗によって弾性部材が光学箱内に落ち込
んだ状態を示す断面図である。FIG. 4 is a cross-sectional view illustrating a state in which the elastic member has fallen into the optical box due to a failure in assembling when the end of the lid member of the scanning optical device is not bonded.
【図５】走査光学装置の密閉度の低下と走査光の干渉を
回避した例を示す断面図である。FIG. 5 is a cross-sectional view showing an example in which the degree of sealing of the scanning optical device is reduced and interference of scanning light is avoided.
【図６】本発明の実施の形態２に係る走査光学装置の部
分断面図である。FIG. 6 is a partial cross-sectional view of a scanning optical device according to a second embodiment of the present invention.
【図７】本発明の実施の形態２に係る走査光学装置のFIG. 7 illustrates a scanning optical device according to Embodiment 2 of the present invention.
【図８】従来の走査光学装置の断面図である。FIG. 8 is a sectional view of a conventional scanning optical device.
【図９】従来の走査光学装置の斜視図である。FIG. 9 is a perspective view of a conventional scanning optical device.
１ 半導体レーザ（光源ユニット） ３ 回転多面鏡 ３ａ モータ（駆動手段） ４ 結像レンズ（結像手段） １０ 光学箱 ２０，３２ 蓋部材 ２１，３１ 弾性部材 ３１ｂ シート部材 Reference Signs List 1 semiconductor laser (light source unit) 3 rotating polygon mirror 3a motor (driving means) 4 imaging lens (imaging means) 10 optical box 20, 32 lid member 21, 31 elastic member 31b sheet member
Claims (3)
偏向走査する回転多面鏡と、該回転多面鏡を回転駆動す
る駆動手段と、前記回転多面鏡によって偏向走査された
走査光を感光体に結像させる結像手段と、該結像手段と
前記回転多面鏡を収容する光学箱と、該光学箱を閉塞す
る蓋部材と、該蓋部材と前記光学箱の間を密閉する弾性
部材を有して成る走査光学装置において、 前記弾性部材と前記蓋部材を部分的に接着したことを特
徴とする走査光学装置。A rotary polygon mirror for deflecting and scanning the light beam emitted from the light source unit; a driving means for rotating and driving the rotary polygon mirror; and connecting the scanning light deflected and scanned by the rotary polygon mirror to a photosensitive member. An imaging unit for imaging, an optical box for housing the imaging unit and the rotating polygon mirror, a lid member for closing the optical box, and an elastic member for sealing between the lid member and the optical box. The scanning optical device according to claim 1, wherein the elastic member and the lid member are partially bonded.
に、前記弾性部材に接着されたシート部材を挟み込んだ
ことを特徴とする請求項１記載の走査光学装置。2. The scanning optical device according to claim 1, wherein a sheet member adhered to said elastic member is sandwiched between a part between said lid member and said elastic member.
い部分を光ビーム出射光路の近傍と光走査領域及び前記
結像手段の回転多面鏡側を除く領域の一部に配置したこ
とを特徴とする請求項１又は２記載の走査光学装置。3. A portion where the elastic member and the lid member are not adhered is disposed in the vicinity of a light beam emission optical path, a light scanning region, and a part of a region excluding the rotating polygon mirror side of the image forming means. 3. The scanning optical device according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000258352A JP2002072123A (en) | 2000-08-29 | 2000-08-29 | Optical scanning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000258352A JP2002072123A (en) | 2000-08-29 | 2000-08-29 | Optical scanning apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002072123A true JP2002072123A (en) | 2002-03-12 |
Family
ID=18746677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000258352A Withdrawn JP2002072123A (en) | 2000-08-29 | 2000-08-29 | Optical scanning apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002072123A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009223132A (en) * | 2008-03-18 | 2009-10-01 | Canon Inc | Optical scanner |
-
2000
- 2000-08-29 JP JP2000258352A patent/JP2002072123A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009223132A (en) * | 2008-03-18 | 2009-10-01 | Canon Inc | Optical scanner |
| JP4641547B2 (en) * | 2008-03-18 | 2011-03-02 | キヤノン株式会社 | Optical scanning device |
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