JPH09105882A - Deflection scanning device - Google Patents
Deflection scanning deviceInfo
- Publication number
- JPH09105882A JPH09105882A JP7289235A JP28923595A JPH09105882A JP H09105882 A JPH09105882 A JP H09105882A JP 7289235 A JP7289235 A JP 7289235A JP 28923595 A JP28923595 A JP 28923595A JP H09105882 A JPH09105882 A JP H09105882A
- Authority
- JP
- Japan
- Prior art keywords
- optical box
- peripheral wall
- lid member
- elastic member
- scanning device
- 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
Landscapes
- 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、レーザビームプリ
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
る偏向走査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 deflection scanning device used for an image forming apparatus such as a laser beam printer and a laser facsimile.
【０００２】[0002]
【従来の技術】レーザビーム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偏向走査装置は一般
的に、図６に示すように半導体レーザやコリメータレン
ズをユニット化した光源ユニットＳ0 と、これから発生
された平行光束のレーザ光を偏向走査する回転多面鏡Ｒ
0 と、偏向走査されたレーザ光を図示しない回転ドラム
の表面の感光体に結像させる結像レンズ系Ｆ0 等を有
し、結像レンズ系Ｆ0 は球面レンズＧ1 とトーリックレ
ンズＧ2 等からなり、感光体に結像する点像の歪等を補
正する機能を有する。回転多面鏡Ｒ0 や結像レンズ系Ｆ
0 は光学箱１１０に収容され、また、光源ユニットＳ0
は光学箱１１０の周壁１１１等に組み付けられる。2. Description of the Related Art A deflection scanning apparatus used in an image forming apparatus such as a laser beam printer or a laser facsimile generally has a light source unit S 0 in which a semiconductor laser and a collimator lens are unitized as shown in FIG. Rotating polygonal mirror R for deflecting and scanning the laser beam of the parallel light flux
0, and an image forming lens system F 0 for forming an image of the deflected and scanned laser light on a photoconductor on the surface of a rotating drum (not shown). The image forming lens system F 0 includes a spherical lens G 1 and a toric lens G 2 And the like, and has a function of correcting the distortion of the point image formed on the photoconductor. Rotating polygon mirror R 0 and imaging lens system F
0 is housed in the optical box 110, and the light source unit S 0
Is assembled to the peripheral wall 111 of the optical box 110 or the like.
【０００３】光学箱１１０の上部開口は、光学箱１１０
内に必要部品をすべて組み込んだうえでふた部材１２０
によって閉塞される。ふた部材１２０は、光学箱１１０
の周壁１１１の上端に当接される平板状の本体１２１
と、その端縁に配設された複数の係止部材１２２を有
し、各係止部材１２２を光学箱１１０の周壁１１１に設
けられた係止爪１１１ａに係止させることで、ふた部材
１２０を光学箱１１０に固定する。なお、光学箱１１０
の周壁１１１等には回転多面鏡Ｒ0 によって偏向走査さ
れたレーザ光を外部の回転ドラムに向かって取り出すた
めの窓が設けられる。The upper opening of the optical box 110 is
The lid member 120 after incorporating all the necessary parts inside
Is blocked by. The lid member 120 is the optical box 110.
Flat plate-shaped main body 121 abutting on the upper end of the peripheral wall 111
And a plurality of locking members 122 disposed on the edge thereof, and by locking each locking member 122 with a locking claw 111a provided on the peripheral wall 111 of the optical box 110, the lid member 120 Is fixed to the optical box 110. The optical box 110
A window for taking out the laser beam deflected and scanned by the rotary polygon mirror R 0 toward an external rotary drum is provided on the peripheral wall 111 and the like.
【０００４】光源ユニットＳ0 の半導体レーザから発生
されたレーザ光はその内部のコリメータレンズによって
平行化され、シリンドリカルレンズによって回転多面鏡
Ｒ0の反射面に線状に集光され、結像レンズ系Ｆ0 を経
て光学箱１１０の窓から回転ドラムに向かって取り出さ
れる。このようにして、回転ドラム上の感光体に結像す
るレーザ光は、回転多面鏡Ｒ0 の回転による主走査と回
転ドラムの回転による副走査によって静電潜像を形成す
る。Laser light generated from the semiconductor laser of the light source unit S 0 is collimated by a collimator lens inside the light source unit S 0 , and is linearly condensed on the reflecting surface of the rotary polygon mirror R 0 by a cylindrical lens to form an imaging lens system. It is taken out from the window of the optical box 110 through F 0 toward the rotating drum. In this way, the laser light imaged on the photosensitive member on the rotating drum forms an electrostatic latent image by the main scanning by the rotation of the rotating polygon mirror R 0 and the sub-scanning by the rotation of the rotating drum.
【０００５】また、レーザ光の一部分はその走査面の端
部において図示しないＢＤミラーによって反射され、走
査開始信号としてビームディテクタＴ0 に導入される。
光源ユニットＳ0 の半導体レーザはビームディテクタＴ
0 の出力によって書き込み変調を開始する。Further, a part of the laser beam is reflected by a BD mirror (not shown) at the end of the scanning surface and introduced into the beam detector T 0 as a scanning start signal.
The semiconductor laser of the light source unit S 0 is a beam detector T
The output of 0 starts write modulation.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら上記従来
の技術によれば、光学箱の開口を閉塞するふた部材が、
その周縁に所定の間隔で配設された係止部材を光学箱の
係止爪に係止させるいわゆるパッチン止めによって固定
されているだけであり、ふた部材の周縁全体を光学箱に
固定するものではないため、各係止部材の間でふた部材
の周縁が局部的に浮き上がって隙間が形成され、ここか
ら光学箱内に外気が流入して回転多面鏡の反射面やビー
ムディテクタの検出面を汚染し、その結果、出力画像の
画質が劣化したり、ビームディテクタの出力の信頼性が
低下する等のトラブルを生じる。However, according to the above conventional technique, the lid member for closing the opening of the optical box is
It is only fixed by so-called patching that locks the locking members arranged at a predetermined interval on the peripheral edge with the locking claws of the optical box, and in the case of fixing the entire peripheral edge of the lid member to the optical box. Since there is no cover, the peripheral edge of the lid member locally floats between the locking members to form a gap, from which outside air flows into the optical box and contaminates the reflective surface of the rotating polygon mirror and the detection surface of the beam detector. However, as a result, troubles such as deterioration of the quality of the output image and deterioration of the reliability of the output of the beam detector occur.
【０００７】近年では、画像形成装置の高速化に伴って
回転多面鏡をより一層高速で回転させることが要求され
ているが、回転多面鏡の回転速度が上昇すると、その反
射面と周囲の空気との摩擦が増加して極めて塵の付きや
すい状態となる。加えて、回転多面鏡の高速回転によっ
て大きな吸引力が発生し、光学箱とふた部材の間に形成
される隙間が微小であってもここから多量の外気が光学
箱内に吸引される。このために、回転多面鏡の反射面や
ビームディテクタの検出面は急速に汚染され、回転多面
鏡やビームディテクタを交換したりこれらの反射面や検
出面を清浄化する等のメンテナンスのコストが著しく上
昇する。さらに、ふた部材が部分的に光学箱と結合して
いるだけであるから、回転多面鏡の回転中にビビリ振動
等による大きな騒音を発生するおそれもある。In recent years, it has been required to rotate the rotary polygon mirror at a higher speed as the speed of the image forming apparatus increases. However, when the rotation speed of the rotary polygon mirror increases, the reflection surface and the surrounding air are increased. The friction with and increases, and it becomes extremely easy to get dust. In addition, a large suction force is generated by the high speed rotation of the rotary polygon mirror, and even if the gap formed between the optical box and the lid member is small, a large amount of outside air is sucked into the optical box from here. For this reason, the reflecting surface of the rotating polygon mirror and the detecting surface of the beam detector are rapidly contaminated, and the maintenance costs such as replacing the rotating polygon mirror and the beam detector and cleaning these reflecting and detecting surfaces are significant. To rise. Furthermore, since the lid member is only partially connected to the optical box, there is a possibility that large noise due to chatter vibration or the like may occur during rotation of the rotary polygon mirror.
【０００８】本発明は、上記従来の技術の有する未解決
の課題に鑑みてなされたものであり、光学箱とふた部材
の間を密封して外気の侵入を防ぐとともに、ふた部材の
ビビリ振動等を回避できる偏向走査装置を提供すること
を目的とするものである。The present invention has been made in view of the above-mentioned unsolved problems of the prior art. The present invention seals the space between the optical box and the lid member to prevent outside air from entering, and causes chattering vibration of the lid member. It is an object of the present invention to provide a deflection scanning device capable of avoiding the above.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するた
め、本発明の偏向走査装置は、回転多面鏡と、該回転多
面鏡の走査光を感光体に結像させる結像手段と、前記回
転多面鏡と前記結像手段を収容する光学箱と、その開口
を閉塞するふた部材と、前記光学箱の周壁に沿って該周
壁と一体的に配設された弾性部材を有し、該弾性部材
が、前記ふた部材の周縁に配設された周壁リブに弾力的
に係止するとともにこれに密着するように構成されてい
ることを特徴とする。In order to achieve the above object, a deflection scanning apparatus of the present invention comprises a rotary polygon mirror, an image forming means for forming an image of scanning light of the rotary polygon mirror on a photosensitive member, and the rotation. An optical box that houses the polygon mirror and the image forming means, a lid member that closes the opening of the optical box, and an elastic member that is integrally arranged with the peripheral wall along the peripheral wall of the optical box are provided. Is elastically locked to the peripheral wall ribs provided on the peripheral edge of the lid member and closely adheres thereto.
【００１０】弾性部材が逆Ｌ字形の断面を有し、ふた部
材の周壁リブがＬ字形の断面を有するとよい。The elastic member may have an inverted L-shaped cross section, and the peripheral wall rib of the lid member may have an L-shaped cross section.
【００１１】また、光学箱の周壁に、ふた部材の内面に
当接されるクッション部材が設けられているとよい。Further, it is preferable that a cushion member which is brought into contact with the inner surface of the lid member is provided on the peripheral wall of the optical box.
【００１２】[0012]
【作用】ふた部材を光学箱の周壁の上端に当接し、ふた
部材の周縁に設けられた周壁リブを弾性部材に係止させ
るとともにこれに密着させることでふた部材を光学箱に
固定する。弾性部材は光学箱の周壁に沿ってこれと一体
的に配設されているため、ふた部材を光学箱の周壁全体
に固定することができる。The lid member is fixed to the optical box by abutting the lid member on the upper end of the peripheral wall of the optical box and engaging the peripheral wall ribs provided on the peripheral edge of the lid member with the elastic member and closely contacting them. Since the elastic member is integrally provided along the peripheral wall of the optical box, the lid member can be fixed to the entire peripheral wall of the optical box.
【００１３】従って、ふた部材の周縁が局部的にパッチ
ン止め等によって光学箱に固定されている場合のような
ビビリ振動を発生するおそれはない。回転多面鏡を高速
回転させるとふた部材のビビリ振動も大きくなる傾向が
あるため、ふた部材のビビリ振動を防ぐことは偏向走査
装置を高速化するうえで極めて重要である。Therefore, there is no possibility of causing chatter vibration as in the case where the peripheral edge of the lid member is locally fixed to the optical box by patching or the like. Since the chatter vibration of the lid member tends to increase when the rotary polygon mirror is rotated at high speed, it is extremely important to prevent the chatter vibration of the lid member in order to speed up the deflection scanning device.
【００１４】また、弾性部材をふた部材の周壁リブに密
着させることによって光学箱とふた部材の間を密封し、
光学箱の内部へ外気が侵入するのを防ぐことができる。
従って、外気中の粉塵等によって回転多面鏡の反射面等
が急速に汚染させるのを防ぎ、メンテナンスのコストを
大幅に低減できる。Further, the elastic member is brought into close contact with the peripheral wall rib of the lid member to seal between the optical box and the lid member,
It is possible to prevent outside air from entering the inside of the optical box.
Therefore, it is possible to prevent the reflecting surface and the like of the rotary polygon mirror from being rapidly contaminated by dust or the like in the outside air, and it is possible to significantly reduce the maintenance cost.
【００１５】その結果、メンテナンスのコストが低くし
かも高速化に適した偏向走査装置を実現できる。As a result, it is possible to realize a deflection scanning device which is low in maintenance cost and suitable for high speed.
【００１６】[0016]
【発明の実施の形態】本発明の実施の形態を図面に基づ
いて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.
【００１７】図１は一実施例による偏向走査装置を示す
もので（ａ）は光学箱とふた部材の一部分を破断して示
す一部破断模式斜視図であり、（ｂ）は光学箱とふた部
材の結合部分のみを拡大して示す拡大部分断面図であ
る。この偏向走査装置は、半導体レーザやコリメータレ
ンズをユニット化した光源ユニットＳ1 と、該光源ユニ
ットＳ1 から発生されたレーザ光を偏向走査する回転多
面鏡Ｒ1 と、その走査光を図示しない回転ドラム上の感
光体に結像させる結像手段である結像レンズ系Ｆ1 を有
し、結像レンズ系Ｆ1 は、球面レンズＮ1 やトーリック
レンズＮ2 等からなり、前記感光体に結像する点像の歪
等を補正するいわゆるｆθ機能を有する。FIG. 1 shows a deflection scanning device according to one embodiment. (A) is a partially cutaway schematic perspective view showing a part of an optical box and a lid member, and (b) is an optical box and a lid. It is an expanded partial sectional view which expands and shows only the connection part of a member. This deflection scanning device includes a light source unit S 1 in which a semiconductor laser and a collimator lens are unitized, a rotary polygon mirror R 1 for deflecting and scanning a laser beam generated from the light source unit S 1, and a rotating light (not shown) for rotating the scanning light. It has an image forming lens system F 1 which is an image forming means for forming an image on the photosensitive member on the drum, and the image forming lens system F 1 comprises a spherical lens N 1 and a toric lens N 2 and is connected to the photosensitive member. It has a so-called fθ function for correcting the distortion of a point image to be formed.
【００１８】回転多面鏡Ｒ1 の走査光の一部分はその走
査面の端部において図示しないＢＤミラーによって反射
され、走査開始信号としてビームディテクタＴ1 に導入
される。光源ユニットＳ1 の半導体レーザはビームディ
テクタＴ1 の出力によって書き込み変調を開始する。A part of the scanning light of the rotary polygon mirror R 1 is reflected by a BD mirror (not shown) at the end of the scanning surface and introduced into the beam detector T 1 as a scanning start signal. The semiconductor laser of the light source unit S 1 starts writing modulation by the output of the beam detector T 1 .
【００１９】回転多面鏡Ｒ1 や結像レンズ系Ｆ1 は光学
箱１０の底壁１１に固定され、また、光源ユニットＳ1
は光学箱１０の周壁１２に組み付けられる。光学箱１０
の上部の開口は、光学箱１０内に必要部品をすべて組み
込んだ上でふた部材２０によって閉塞される。なお、回
転ドラムは光学箱１０の外側に配設され、光学箱１０の
周壁１２には、前記走査光を回転ドラムに向かって取り
出すための窓１０ａが設けられる。The rotating polygon mirror R 1 and the imaging lens system F 1 are fixed to the bottom wall 11 of the optical box 10, and the light source unit S 1
Is assembled to the peripheral wall 12 of the optical box 10. Optical box 10
The opening at the top of is closed by the lid member 20 after all the necessary parts have been incorporated into the optical box 10. The rotary drum is arranged outside the optical box 10, and the peripheral wall 12 of the optical box 10 is provided with a window 10a for taking out the scanning light toward the rotary drum.
【００２０】光学箱１０は、周壁１２から外方へ突出す
る張出部材１３と、２色成形によって張出部材１３と一
体的に形成された弾性部材１４を有し、弾性部材１４は
逆Ｌ字形の断面を有し、前記窓１０ａを除く周壁１２の
上部全体を囲むように配設される。The optical box 10 has an overhanging member 13 projecting outward from the peripheral wall 12 and an elastic member 14 integrally formed with the overhanging member 13 by two-color molding. It has a V-shaped cross section and is disposed so as to surround the entire upper portion of the peripheral wall 12 excluding the window 10a.
【００２１】ふた部材２０はポリプロピレン等の樹脂材
料によって一体成形されたもので、平板状の本体２１
と、その周縁に沿って配設された周壁リブ２２を有し、
周壁リブ２２は、光学箱１０の弾性部材１４の内側に噛
み合うように形成されたＬ字形の断面を有し、ふた部材
２０の周壁リブ２２を弾性部材１４に噛み合わせて光学
箱１０にふた部材２０を組み付けたときにふた部材２０
の周壁リブ２２が光学箱１０の周壁１２の上部全体を囲
むように配設される。The lid member 20 is integrally formed of a resin material such as polypropylene, and has a flat plate-like body 21.
And peripheral wall ribs 22 arranged along the periphery thereof,
The peripheral wall rib 22 has an L-shaped cross section formed so as to mesh with the inside of the elastic member 14 of the optical box 10, and the peripheral wall rib 22 of the lid member 20 meshes with the elastic member 14 to cover the optical box 10. The lid member 20 when the 20 is assembled
The peripheral wall rib 22 is disposed so as to surround the entire upper portion of the peripheral wall 12 of the optical box 10.
【００２２】光学箱１０に対するふた部材２０の組み付
けは、図２に示すように、弾性部材１４を外向きに弾性
変形させながら弾性部材１４と周壁１２の間にふた部材
２０の周壁リブ２２を押し込むことによって行なわれ
る。この作業は、ふた部材２０を光学箱１０にかぶせる
工程で簡単に達成される。As shown in FIG. 2, the cover member 20 is assembled to the optical box 10 by pushing the peripheral wall rib 22 of the cover member 20 between the elastic member 14 and the peripheral wall 12 while elastically deforming the elastic member 14 outward. It is done by This operation is easily accomplished by the step of covering the optical box 10 with the lid member 20.
【００２３】ふた部材２０の周壁リブ２２と光学箱１０
の弾性部材１４が充分な噛み合い状態になると、図１の
（ｂ）に示すように、弾性部材１４とふた部材２０の周
壁リブ２２が弾力的に係止するとともに弾性部材１４の
足部１４ａが周壁リブ２２の脚部２２ｂに弾力的に密着
し、これによって、光学箱１０の内部空間が密閉され
る。このように弾性部材１４の弾性力によって弾性部材
１４と周壁リブ２２を密着させるためには、図３に示す
ように、ふた部材２０の周壁リブ２２の脚部２２ｂの長
さＡと、弾性部材１４の足部１４ａの下端から周壁１２
の上端までの距離Ｂと、光学箱１０の弾性部材１４の足
部１４ａの突出量Ｃと、ふた部材２０の周壁リブ２２の
足部２２ａの突出量Ｄの間に以下の関係が成立すること
が必要である。The peripheral wall rib 22 of the lid member 20 and the optical box 10
When the elastic member 14 of FIG. 1 is brought into a sufficient meshing state, as shown in FIG. 1B, the elastic member 14 and the peripheral wall rib 22 of the lid member 20 are elastically locked and the foot portion 14a of the elastic member 14 is The peripheral wall rib 22 elastically comes into close contact with the leg portion 22b, whereby the inner space of the optical box 10 is sealed. In order to bring the elastic member 14 and the peripheral wall rib 22 into close contact with each other by the elastic force of the elastic member 14 as described above, as shown in FIG. 3, the length A of the leg portion 22b of the peripheral wall rib 22 of the lid member 20 and the elastic member are set. 14 from the lower end of the foot 14a to the peripheral wall 12
The distance B to the upper end of the optical box 10, the protrusion amount C of the foot portion 14a of the elastic member 14 of the optical box 10, and the protrusion amount D of the foot portion 22a of the peripheral wall rib 22 of the lid member 20 satisfy the following relationship. is required.
【００２４】Ａ＜Ｂ・・・・・（１） Ｃ＜Ｄ・・・・・（２） すなわち、ふた部材２０の周壁リブ２２の脚部２２ｂの
長さＡを弾性部材１４の足部１４ａの下端から周壁１２
の上端までの距離Ｂより小さくすることでふた部材２０
の本体２１を光学箱１０の周壁１２の上端に弾力的に押
圧し、これによって、ふた部材２０と光学箱１０を強固
に結合させることができる。また、光学箱１０の弾性部
材１４の足部１４ａの突出量Ｃをふた部材２０の周壁リ
ブ２２の足部２２ａの突出量Ｄより小さくすることで弾
性部材１４を周壁リブ１２に対して水平方向に充分に引
きつけて両者を密着させることができる。A <B (1) C <D (2) That is, the length A of the leg portion 22b of the peripheral wall rib 22 of the lid member 20 is set to the foot portion 14a of the elastic member 14. From the bottom edge of the wall 12
The lid member 20 is made smaller than the distance B to the upper end of the
The main body 21 is elastically pressed against the upper end of the peripheral wall 12 of the optical box 10, whereby the lid member 20 and the optical box 10 can be firmly coupled. Further, by making the protrusion amount C of the foot portion 14 a of the elastic member 14 of the optical box 10 smaller than the protrusion amount D of the foot portion 22 a of the peripheral wall rib 22 of the lid member 20, the elastic member 14 is horizontally oriented with respect to the peripheral wall rib 12. It is possible to bring them into close contact with each other by sufficiently attracting them.
【００２５】このように本実施例によれば、ふた部材が
光学箱の開口の周縁に密着して強固に結合されるため、
ふた部材が回転多面鏡の回転中にビビリ振動等を発生す
るおそれがないうえに、光学箱の内部を外気から完全に
遮断し、外気中の粉塵等によって回転多面鏡の反射面や
ビームディテクタの検出面等が汚染されるのを効果的に
回避できる。その結果、運転中に大きな騒音を発生した
り、光学箱内に外気が侵入して回転多面鏡やビームディ
テクタのメンテナンスのコストが高くなる等のトラブル
のない高性能で安価な偏向走査装置を実現できる。As described above, according to this embodiment, since the lid member is closely attached to the peripheral edge of the opening of the optical box and firmly coupled,
The lid member does not cause chattering vibrations etc. during rotation of the rotating polygonal mirror, completely shuts the inside of the optical box from the outside air, and dust in the outside air causes the reflecting surface of the rotating polygonal mirror and the beam detector It is possible to effectively prevent the detection surface and the like from being contaminated. As a result, a high-performance and low-cost deflection scanning device that does not cause troubles such as generating a lot of noise during operation and increasing the maintenance cost of the rotating polygon mirror and beam detector due to the outside air entering the optical box is realized. it can.
【００２６】なお、図４に示すように、光学箱１０の周
壁１２の上端に、弾性部材１４と同様の２色成形による
クッション部材１５を設ければ、回転多面鏡Ｒ1 の回転
中に発生する振動が光学箱１０からふた部材２０に伝達
されるときにクッション部材１５によって減衰されるた
め、ふた部材２０から発生する騒音をより一層低減でき
る。この場合は、図５に示すように、ふた部材２０の周
壁リブ２２の脚部２２ｂの長さＡを弾性部材１４の足部
１４ａの下端から周壁１２上のクッション部材１５の上
端までの距離Ｅより小さくなるように設定する。すなわ
ち、式（１）の替わりに以下の式を用いる。As shown in FIG. 4, if a cushion member 15 formed by two-color molding similar to the elastic member 14 is provided at the upper end of the peripheral wall 12 of the optical box 10, it is generated during rotation of the rotary polygon mirror R 1. Since the generated vibration is attenuated by the cushion member 15 when being transmitted from the optical box 10 to the lid member 20, the noise generated from the lid member 20 can be further reduced. In this case, as shown in FIG. 5, the length A of the leg portion 22b of the peripheral wall rib 22 of the lid member 20 is set to the distance E from the lower end of the foot portion 14a of the elastic member 14 to the upper end of the cushion member 15 on the peripheral wall 12. Set it to be smaller. That is, the following formula is used instead of the formula (1).
【００２７】Ａ＜Ｅ・・・・・（３）A <E ... (3)
【００２８】[0028]
【発明の効果】本発明は上述のとおり構成されているの
で、次に記載するような効果を奏する。Since the present invention is configured as described above, it has the following effects.
【００２９】光学箱とふた部材の間を密封して外気の侵
入を防ぐとともに、ふた部材のビビリ振動等を回避でき
る。すなわち、外気の侵入によって回転多面鏡の反射面
が急速に汚染されるのを防ぎ、回転多面鏡の反射面等を
清浄化したり回転多面鏡等を交換する頻度を少なくして
メンテナンスのコストを低減できる。また、回転多面鏡
を高速回転させてもふた部材がビビリ振動等を起すのを
回避できるため、偏向走査装置の高速化を大きく促進で
きる。The space between the optical box and the lid member can be hermetically sealed to prevent invasion of outside air, and chattering vibration of the lid member can be avoided. That is, it is possible to prevent the reflective surface of the rotating polygon mirror from being rapidly polluted by the invasion of the outside air, reduce the frequency of cleaning the reflecting surface of the rotating polygon mirror or replacing the rotating polygon mirror, and reduce the maintenance cost. it can. Further, even if the rotary polygon mirror is rotated at a high speed, it is possible to prevent the lid member from causing chatter vibration and the like, so that the speed of the deflection scanning device can be greatly accelerated.
【図１】一実施例による偏向走査装置を示すもので、
（ａ）はその一部分を破断して示す一部破断斜視図、
（ｂ）はふた部材と光学箱の結合部分のみを拡大して示
す拡大部分断面図である。FIG. 1 shows a deflection scanning device according to an embodiment,
(A) is a partially cutaway perspective view showing a part thereof by breaking.
(B) is an enlarged partial cross-sectional view showing only the connecting portion of the lid member and the optical box in an enlarged manner.
【図２】ふた部材を光学箱に組み付ける工程を説明する
ものである。FIG. 2 illustrates a process of assembling a lid member to an optical box.
【図３】ふた部材の周壁リブと光学箱の弾性部材の寸法
の関係を説明する図である。FIG. 3 is a diagram illustrating the relationship between the peripheral wall ribs of the lid member and the dimensions of the elastic member of the optical box.
【図４】一変形例による偏向走査装置のふた部材と光学
箱の結合部分を示す拡大部分断面図である。FIG. 4 is an enlarged partial cross-sectional view showing a combined portion of a lid member and an optical box of a deflection scanning device according to a modification.
【図５】図４の変形例のふた部材の周壁リブと光学箱の
弾性部材の寸法の関係を説明する図である。FIG. 5 is a diagram for explaining the relationship between the peripheral wall ribs of the lid member and the dimensions of the elastic member of the optical box of the modified example of FIG.
【図６】一従来例を示す斜視図である。FIG. 6 is a perspective view showing a conventional example.
１０ 光学箱 １２ 周壁 １３ 張出部材 １４ 弾性部材 １５ クッション部材 ２０ ふた部材 ２１ 本体 ２２ 周壁リブ 10 Optical Box 12 Peripheral Wall 13 Overhanging Member 14 Elastic Member 15 Cushion Member 20 Lid Member 21 Main Body 22 Peripheral Wall Rib
Claims (5)
感光体に結像させる結像手段と、前記回転多面鏡と前記
結像手段を収容する光学箱と、その開口を閉塞するふた
部材と、前記光学箱の周壁に沿って該周壁と一体的に配
設された弾性部材を有し、該弾性部材が、前記ふた部材
の周縁に配設された周壁リブに弾力的に係止するととも
にこれに密着するように構成されていることを特徴とす
る偏向走査装置。1. A rotary polygonal mirror, an image forming means for forming an image of scanning light of the rotary polygonal mirror on a photoconductor, an optical box for accommodating the rotary polygonal mirror and the image forming means, and an opening for closing the opening. A lid member and an elastic member integrally provided with the peripheral wall along the peripheral wall of the optical box are provided, and the elastic member is elastically engaged with a peripheral wall rib arranged at a peripheral edge of the lid member. A deflection scanning device characterized in that it is configured to stop and to come into close contact therewith.
部材の周壁リブがＬ字形の断面を有することを特徴とす
る請求項１記載の偏向走査装置。2. The deflection scanning device according to claim 1, wherein the elastic member has an inverted L-shaped cross section, and the peripheral wall rib of the lid member has an L-shaped cross section.
されるクッション部材が設けられていることを特徴とす
る請求項１または２記載の偏向走査装置。3. The deflection scanning device according to claim 1, wherein a cushion member that is in contact with the inner surface of the lid member is provided on the peripheral wall of the optical box.
周壁と一体的に形成されていることを特徴とする請求項
１ないし３いずれか１項記載の偏向走査装置。4. The deflection scanning device according to claim 1, wherein the elastic member is integrally formed with the peripheral wall of the optical box by two-color molding.
学箱の周壁と一体的に形成されていることを特徴とする
請求項１ないし４いずれか１項記載の偏向走査装置。5. The deflection scanning device according to claim 1, wherein the cushion member is integrally formed with the peripheral wall of the optical box by two-color molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7289235A JPH09105882A (en) | 1995-10-11 | 1995-10-11 | Deflection scanning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7289235A JPH09105882A (en) | 1995-10-11 | 1995-10-11 | Deflection scanning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09105882A true JPH09105882A (en) | 1997-04-22 |
Family
ID=17740541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7289235A Pending JPH09105882A (en) | 1995-10-11 | 1995-10-11 | Deflection scanning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09105882A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008261963A (en) * | 2007-04-11 | 2008-10-30 | Hoya Corp | Housing for laser scanner |
| JP2016006458A (en) * | 2014-06-20 | 2016-01-14 | 京セラドキュメントソリューションズ株式会社 | Optical scanner and image forming apparatus including the same |
| JP2016206532A (en) * | 2015-04-27 | 2016-12-08 | 京セラドキュメントソリューションズ株式会社 | Optical scanner and image forming apparatus including the optical scanner |
| WO2018037895A1 (en) * | 2016-08-22 | 2018-03-01 | 京セラドキュメントソリューションズ株式会社 | Optical scanning device and image forming apparatus having optical scanning device |
-
1995
- 1995-10-11 JP JP7289235A patent/JPH09105882A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008261963A (en) * | 2007-04-11 | 2008-10-30 | Hoya Corp | Housing for laser scanner |
| JP2016006458A (en) * | 2014-06-20 | 2016-01-14 | 京セラドキュメントソリューションズ株式会社 | Optical scanner and image forming apparatus including the same |
| US9268131B2 (en) | 2014-06-20 | 2016-02-23 | Kyocera Document Solutions Inc. | Optical scanning device and image forming apparatus including the same |
| JP2016206532A (en) * | 2015-04-27 | 2016-12-08 | 京セラドキュメントソリューションズ株式会社 | Optical scanner and image forming apparatus including the optical scanner |
| WO2018037895A1 (en) * | 2016-08-22 | 2018-03-01 | 京セラドキュメントソリューションズ株式会社 | Optical scanning device and image forming apparatus having optical scanning device |
| JPWO2018037895A1 (en) * | 2016-08-22 | 2019-06-20 | 京セラドキュメントソリューションズ株式会社 | Optical scanning device and image forming apparatus provided with the optical scanning device |
| US10539903B2 (en) | 2016-08-22 | 2020-01-21 | Kyocera Document Solutions Inc. | Optical scanning device and image forming apparatus including the same |
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