JP3352333B2 - Deflection scanning device - Google Patents
Deflection scanning deviceInfo
- Publication number
- JP3352333B2 JP3352333B2 JP20647596A JP20647596A JP3352333B2 JP 3352333 B2 JP3352333 B2 JP 3352333B2 JP 20647596 A JP20647596 A JP 20647596A JP 20647596 A JP20647596 A JP 20647596A JP 3352333 B2 JP3352333 B2 JP 3352333B2
- Authority
- JP
- Japan
- Prior art keywords
- optical box
- optical
- folding mirror
- box
- elastic member
- 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.)
- Expired - Fee Related
Links
Landscapes
- Facsimile Scanning Arrangements (AREA)
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
- Mechanical Optical Scanning Systems (AREA)
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情報記録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 information recording device such as a laser printer and a laser facsimile.
【０００２】[0002]
【従来の技術】レーザープリンタやレーザーファクシミ
リ等の情報記録装置に用いられる偏向走査装置は図７に
示すように、光源ユニット１０１から発生されたレーザ
光をシリンドリカルレンズ１０２によって線状の光束に
集光し、回転多面鏡１０３によって所定の走査方向（Ｙ
軸方向）に偏向走査し、走査レンズ１０４、折り返しミ
ラー１０５を経て図示しない回転ドラム上の感光体に結
像させる。感光体に結像する光束は、回転多面鏡１０３
の回転による主走査と、回転ドラムの回転による副走査
に伴って静電潜像を形成する。2. Description of the Related Art A deflection scanning device used in an information recording device such as a laser printer or a laser facsimile condenses a laser beam generated from a light source unit 101 into a linear light beam by a cylindrical lens 102, as shown in FIG. Then, a predetermined scanning direction (Y
(Deflection scanning in the axial direction), and forms an image on a photosensitive member on a rotating drum (not shown) via a scanning lens 104 and a folding mirror 105. The light beam that forms an image on the photoreceptor is rotated by a polygon mirror 103.
The electrostatic latent image is formed by the main scanning by the rotation of the rotating drum and the sub-scanning by the rotation of the rotating drum.
【０００３】回転多面鏡１０３の走査光は、その走査面
の一端においてＢＤミラー１０６ａによって前記走査面
の下方へ分離されてＢＤセンサ１０６ｂに導入され、走
査開始信号に変換されて光源ユニット１０１の半導体レ
ーザに送信される。半導体レーザは走査開始信号を受信
したうえで書き込み変調を開始する。The scanning light of the rotary polygon mirror 103 is separated at one end of the scanning surface by a BD mirror 106a below the scanning surface and introduced into a BD sensor 106b, converted into a scanning start signal, and converted into a scanning start signal. Sent to laser. The semiconductor laser starts writing modulation after receiving the scanning start signal.
【０００４】光源ユニット１０１、シリンドリカルレン
ズ１０２、回転多面鏡１０３およびその駆動モータ１０
３ａ、走査レンズ１０４、ＢＤミラー１０６ａおよびＢ
Ｄセンサ１０６ｂは光学箱１０７の側壁や底壁に取り付
けられる。回転ドラムは光学箱１０７の外側に配設され
ており、光学箱１０７の底壁には、走査光を光学箱１０
７から回転ドラムに向かって取り出すための窓１０８が
設けられている。また、光学箱１０７の上部開口は図示
しないふた部材によって閉塞される。A light source unit 101, a cylindrical lens 102, a rotary polygon mirror 103, and a driving motor 10
3a, scanning lens 104, BD mirror 106a and B
The D sensor 106b is attached to a side wall or a bottom wall of the optical box 107. The rotating drum is disposed outside the optical box 107, and the scanning light is applied to the bottom wall of the optical box 107 by the optical box 10.
There is provided a window 108 for taking out from 7 toward the rotating drum. The upper opening of the optical box 107 is closed by a lid member (not shown).
【０００５】光学箱１０７に対する折り返しミラー１０
５の組み付けは、光学箱１０７の両側壁の内側に配設さ
れたミラー支持体に折り返しミラー１０５の両端をそれ
ぞれ当接し、光学箱１０７の後壁と折り返しミラー１０
５の間にバネを挿入することによって行なわれる。この
バネは、光学箱１０７の後壁の内側に一体成形された係
止爪に係止させて光学箱１０７に固定される。[0005] Folding mirror 10 for optical box 107
5 is assembled by bringing both ends of the folding mirror 105 into contact with mirror supports provided inside the both side walls of the optical box 107, respectively, so that the rear wall of the optical box 107 and the folding mirror 10
5 by inserting a spring. The spring is fixed to the optical box 107 by being locked by a locking claw integrally formed inside the rear wall of the optical box 107.
【０００６】バネを用いて折り返しミラー１０５を固定
する理由は、光学箱１０７と折り返しミラー１０５の線
膨張係数の違いによって折り返しミラー１０５に歪が発
生するのを回避するためである。The reason why the folding mirror 105 is fixed using a spring is to avoid the occurrence of distortion in the folding mirror 105 due to the difference in linear expansion coefficient between the optical box 107 and the folding mirror 105.
【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
の技術によれば、前述のように、光学箱の後壁の内側に
折り返しミラーを固定するバネを係止させるための係止
爪を設けなければならず、このような係止爪を光学箱と
一体成形するには、光学箱の成形後に係止爪の成形駒を
抜くための型抜き穴を光学箱の底壁等に設ける必要があ
る。However, according to the above-mentioned prior art, as described above, a locking claw for locking a spring for fixing the return mirror must be provided inside the rear wall of the optical box. However, in order to integrally form such a locking claw with the optical box, it is necessary to provide a die-cutting hole for removing a forming piece of the locking claw on the bottom wall or the like of the optical box after the optical box is formed.
【０００８】近年では、偏向走査装置の高速化とともに
回転多面鏡の回転数が１０，０００ｒｐｍを超えるもの
も数多く開発されているが、回転多面鏡の高速回転に伴
って光学箱内に多量の外気が吸引されると、外気中の塵
埃が回転多面鏡の反射面に付着して反射率が低下する等
のトラブルが生じる。そこで、光学箱の上部開口にふた
部材を取り付けするとともに、光学箱から回転ドラムに
向かって走査光を取り出す窓を透明板によって塞ぐこと
で、光学箱を密封し、外気の侵入を防ぐ工夫がなされて
いる。In recent years, many types of rotating polygon mirrors having rotation speeds exceeding 10,000 rpm have been developed with the speeding up of the deflection scanning device. However, a large amount of outside air has been stored in the optical box with the high speed rotation of the rotating polygon mirror. Is sucked, dust in the outside air adheres to the reflecting surface of the rotary polygon mirror, causing a problem such as a decrease in reflectance. Therefore, a lid was attached to the upper opening of the optical box, and a window for taking out scanning light from the optical box toward the rotating drum was closed with a transparent plate to seal the optical box and prevent outside air from entering. ing.
【０００９】ところが、光学箱には走査光を取り出す窓
以外にも、上記のように、折り返しミラーを固定するバ
ネを係止させる係止爪の型抜き穴が開口しているため、
走査光の取り出し用の窓を塞いだだけでは外気の侵入を
回避することはできない。外気の侵入によって回転多面
鏡の反射面が汚染されるとその反射率が低下するため、
回転多面鏡の反射面を清浄化したり、回転多面鏡を交換
する等のメンテナンスが必要となり、偏向走査装置を搭
載した情報記録装置のランニングコストが上昇する。However, in addition to the window for taking out the scanning light, the optical box is provided with a hole for releasing the hook for locking the spring for fixing the return mirror as described above.
It is not possible to avoid the invasion of outside air only by closing the window for taking out the scanning light. If the reflection surface of the rotating polygon mirror is contaminated by the intrusion of outside air, its reflectance will decrease,
Maintenance such as cleaning the reflection surface of the rotary polygon mirror or replacing the rotary polygon mirror is required, and the running cost of the information recording apparatus equipped with the deflection scanning device increases.
【００１０】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、折り返しミラー等
の組み付け部分から光学箱内に外気が侵入して回転多面
鏡を汚染するの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。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned unresolved problems of the related art, and is intended to prevent the outside air from entering an optical box from an assembly portion such as a folding mirror and contaminating a rotating polygon mirror. It is an object of the present invention to provide a deflection scanning device which can be avoided.
【００１１】[0011]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の偏向走査装置は、光学箱の内部で駆動手
段によって回転される回転多面鏡と、その走査光を感光
体に結像させる結像光学系と、前記走査光の光路に配設
された折り返しミラーと、該折り返しミラーを前記光学
箱に組み付ける少なくとも１個の弾性部材を有し、該弾
性部材が、前記光学箱の係止部に係合する支持部と、前
記光学箱の開口部を覆うための底部と、前記折り返しミ
ラーに当接される当接部を備え、前記光学箱の開口部
が、前記光学箱の係止部を前記光学箱に一体成形するた
めに設けられた型抜き穴であることを特徴とする。In order to achieve the above object, a deflection scanning apparatus according to the present invention comprises a rotating polygon mirror rotated by a driving means inside an optical box, and a scanning light beam coupled to a photosensitive member. An imaging optical system for imaging, a folding mirror disposed on an optical path of the scanning light, and at least one elastic member for assembling the folding mirror to the optical box; a supporting portion that engages the locking portion, a bottom portion for covering the opening of the optical box, the includes a contact portion which is brought into contact with the folding mirror, the optical box openings
However, the locking portion of the optical box is integrally formed with the optical box.
It said die cut hole der Rukoto provided in order.
【００１２】[0012]
【００１３】また、光学箱の内部で駆動手段によって回
転される回転多面鏡と、その走査光を感光体に結像させ
る結像レンズと、該結像レンズを前記光学箱に組み付け
る少なくとも１個の弾性部材を有し、該弾性部材が、前
記光学箱の係止部に係合する支持部と、前記光学箱の開
口部を覆うための底部と、前記結像レンズに当接される
当接部を備えていることを特徴とするものでもよい。[0013] Further, a rotating polygon mirror rotated by a driving means inside the optical box, an image forming lens for forming an image of the scanning light on a photosensitive member, and at least one assembling the image forming lens to the optical box. An elastic member, wherein the elastic member engages with a locking portion of the optical box, a bottom portion for covering an opening of the optical box, and an abutment which is in contact with the imaging lens. It may be characterized by having a portion.
【００１４】また、光学箱の内部で駆動手段によって回
転される回転多面鏡と、その走査光を感光体に結像させ
る結像光学系と、前記走査光の光路に配設された折り返
しミラーと、該折り返しミラーを前記光学箱に組み付け
る少なくとも１個の弾性部材を有し、該弾性部材が、前
記光学箱から前記走査光を取り出すための窓の近傍に配
設された係止部に係合する支持部と、前記折り返しミラ
ーに当接される当接部を備え、前記光学箱の窓が、前記
光学箱の係止部を前記光学箱に一体成形するために設け
られた型抜き穴であることを特徴とするものでもよい。A rotary polygon mirror which is rotated by a driving means inside the optical box, an image forming optical system for forming an image of the scanning light on a photosensitive member, and a folding mirror disposed on an optical path of the scanning light. Having at least one elastic member for assembling the folding mirror to the optical box, the elastic member engaging with a locking portion disposed near a window for extracting the scanning light from the optical box. And a contact portion that contacts the folding mirror , wherein the window of the optical box is
A locking portion of the optical box is provided for integrally molding with the optical box.
Punched holes der Rukoto that is may be characterized in.
【００１５】また、光学箱の内部で駆動手段によって回
転される回転多面鏡と、その走査光を感光体に結像させ
る結像光学系と、前記走査光の光路に配設された折り返
しミラーと、該折り返しミラーを前記光学箱に組み付け
る少なくとも１個の弾性部材を有し、該弾性部材が、前
記光学箱の外表面に設けられた第１の係止部に係合する
第１の支持部と、前記折り返しミラーに当接される当接
部と、前記光学箱の上端に設けられた第２の係止部に係
合する第２の支持部を備えていることを特徴とするもの
でもよい。A rotary polygon mirror rotated by a driving means inside the optical box, an image forming optical system for forming an image of the scanning light on a photosensitive member, and a folding mirror disposed on an optical path of the scanning light; And at least one elastic member for assembling the folding mirror to the optical box, the elastic member engaging with a first locking portion provided on an outer surface of the optical box.
A first support portion, a contact portion that comes into contact with the folding mirror, and a second locking portion provided at an upper end of the optical box.
It may be provided with a second supporting portion that fits.
【００１６】また、光学箱の内部で駆動手段によって回
転される回転多面鏡と、その走査光を感光体に結像させ
る結像光学系と、前記走査光の光路に配設された折り返
しミラーと、該折り返しミラーを前記光学箱に組み付け
る少なくとも１個の弾性部材を有し、該弾性部材が、前
記光学箱の外表面に設けられた係止部に係合する第１の
支持部と、前記折り返しミラーに当接される当接部と、
前記光学箱とこれを覆うふた部材の間に挟持される第２
の支持部を備えていることを特徴とするものでもよい。Also, a rotary polygon mirror rotated by driving means inside the optical box, an image forming optical system for forming an image of the scanning light on a photosensitive member, and a folding back disposed in an optical path of the scanning light
A mirror and has at least one elastic member assembled the folding mirror to the optical box, the elastic member, a first <br that engages the engaging portion provided on the outer surface of the optical box A supporting portion, and a contact portion that is in contact with the folding mirror ;
A second member sandwiched between the optical box and a cover member for covering the optical box;
May be provided.
【００１７】[0017]
【作用】折り返しミラーを光学箱の組み付けるための弾
性部材の底部を、光学箱の開口部に当接してこれを覆
い、該開口部から光学箱の内部に外気が侵入するのを防
ぐ。このようにして、外気中の塵埃のために回転多面鏡
の反射面が汚染されるのを防ぎ、偏向走査装置のメンテ
ナンスのコストを低減する。The bottom of the elastic member for attaching the folding mirror to the optical box is in contact with and covers the opening of the optical box to prevent outside air from entering the inside of the optical box through the opening. In this way, the reflection surface of the rotary polygon mirror is prevented from being contaminated by dust in the outside air, and the maintenance cost of the deflection scanning device is reduced.
【００１８】弾性部材の支持部を光学箱に固定するため
に光学箱に一体成形された係止爪等の係止部は、その成
形駒を抜くための型抜き穴を必要とする。このような開
口部が光学箱に残されたままであると、そこから外気が
光学箱内に侵入して回転多面鏡の反射面を汚染する。そ
こで、弾性部材によって折り返しミラーを光学箱に組み
付けると同時に、弾性部材の底部によって光学箱の開口
部を覆い、外気の侵入を防ぐ。An engaging portion such as an engaging claw integrally formed on the optical box for fixing the supporting portion of the elastic member to the optical box requires a die-cutting hole for removing the molded piece. If such an opening is left in the optical box, outside air enters into the optical box and contaminates the reflecting surface of the rotary polygon mirror. Therefore, the folding mirror is assembled to the optical box by the elastic member, and at the same time, the opening of the optical box is covered by the bottom of the elastic member to prevent outside air from entering.
【００１９】結像レンズを光学箱に組み付けるに際して
も、上記と同様の弾性部材を用いることで、光学箱内に
外気が侵入するのを回避できる。When assembling the imaging lens to the optical box, the use of the same elastic member as described above can prevent outside air from entering the optical box.
【００２０】また、光学箱の内部で駆動手段によって回
転される回転多面鏡と、その走査光を感光体に結像させ
る結像光学系と、前記走査光の光路に配設された折り返
しミラーと、該折り返しミラーを前記光学箱に組み付け
る少なくとも１個の弾性部材を有し、該弾性部材が、前
記光学箱から前記走査光を取り出すための窓の近傍に配
設された係止部に係合する支持部と、前記折り返しミラ
ーに当接される当接部を備え、前記光学箱の窓が、前記
光学箱の係止部を前記光学箱に一体成形するために設け
られた型抜き穴であることを特徴とするものであれば、
走査光を取り出す窓を、光学箱の係止部を一体成形する
ための型抜き穴として用いたうえで、前記窓を透明板等
によって塞ぐことで、外気の侵入を回避できる。A rotating polygon mirror rotated by a driving means inside the optical box; an image forming optical system for forming an image of the scanning light on a photosensitive member; and a folding mirror disposed on an optical path of the scanning light. Having at least one elastic member for assembling the folding mirror to the optical box, the elastic member engaging with a locking portion disposed near a window for extracting the scanning light from the optical box. And a contact portion that contacts the folding mirror , wherein the window of the optical box is
A locking portion of the optical box is provided for integrally molding with the optical box.
If the die cut hole der Rukoto which is intended, wherein,
By using a window for taking out the scanning light as a die-cutting hole for integrally forming the locking portion of the optical box and closing the window with a transparent plate or the like, invasion of outside air can be avoided.
【００２１】また、光学箱の内部で駆動手段によって回
転される回転多面鏡と、その走査光を感光体に結像させ
る結像光学系と、前記走査光の光路に配設された折り返
しミラーと、該折り返しミラーを前記光学箱に組み付け
る少なくとも１個の弾性部材を有し、該弾性部材が、前
記光学箱の外表面に設けられた第１の係止部に係合する
第１の支持部と、前記折り返しミラーに当接される当接
部と、前記光学箱の上端に設けられた第２の係止部に係
合する第２の支持部を備えていることを特徴とするもの
であれば、弾性部材の第１の支持部を光学箱の外部へ突
出させ、その外表面の第１の係止部に係合させることで
弾性部材を光学箱に固定できる。光学箱の第１の係止部
が光学箱の内部に設けられている場合のような型抜き穴
を必要とせず、そこから外気が侵入する心配もない。A rotary polygon mirror rotated by a driving means inside the optical box; an image forming optical system for forming an image of the scanning light on a photosensitive member; and a folding mirror provided on an optical path of the scanning light. And at least one elastic member for assembling the folding mirror to the optical box, the elastic member engaging with a first locking portion provided on an outer surface of the optical box.
A first support portion, a contact portion that comes into contact with the folding mirror, and a second locking portion provided at an upper end of the optical box.
If the second support portion is provided, the first support portion of the elastic member is protruded to the outside of the optical box, and the first support portion of the elastic member is engaged with the first locking portion on the outer surface thereof. The elastic member can be fixed to the optical box by the combination. There is no need for a die-cutting hole as in the case where the first locking portion of the optical box is provided inside the optical box, and there is no fear that outside air enters therefrom.
【００２２】[0022]
【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。Embodiments of the present invention will be described with reference to the drawings.
【００２３】図１は第１実施例による偏向走査装置を示
すもので、図示しない光源から発生されたレーザ光を偏
向走査する回転多面鏡３とその駆動手段である駆動部３
ａは、回転多面鏡３の走査光Ｌ1 の光路に配設された結
像光学系である結像レンズ４や折り返しミラー５ととも
に光学箱６内に収容される。光学箱６の上部開口はふた
部材７によって閉塞され、光学箱６の底壁には、折り返
しミラー５によって反射された走査光Ｌ1 を外部の回転
ドラムに向かって取り出すための窓８が設けられる。FIG. 1 shows a deflection scanning apparatus according to a first embodiment, in which a rotary polygon mirror 3 for deflecting and scanning a laser beam generated from a light source (not shown) and a driving unit 3 as a driving means thereof.
“a” is housed in an optical box 6 together with an image forming lens 4 and a return mirror 5 which are image forming optical systems provided in the optical path of the scanning light L 1 of the rotary polygon mirror 3. The upper opening of the optical box 6 is closed by a lid member 7, and a window 8 for taking out the scanning light L <b> 1 reflected by the folding mirror 5 toward the external rotating drum is provided on the bottom wall of the optical box 6. .
【００２４】回転多面鏡３の回転に伴って発生する吸引
力によって、光学箱６の窓８から多量の外気が侵入する
と、外気中の塵埃が回転多面鏡３の反射面に付着してこ
のために反射率が低下する。そこで、光学箱６の窓８を
透明板９によって塞いで外気の侵入を防ぐ。When a large amount of outside air enters through the window 8 of the optical box 6 due to the suction force generated by the rotation of the rotating polygon mirror 3, dust in the outside air adheres to the reflection surface of the rotating polygon mirror 3, and thus, The reflectivity decreases. Therefore, the window 8 of the optical box 6 is closed by the transparent plate 9 to prevent outside air from entering.
【００２５】折り返しミラー５は、走査光Ｌ1 の走査方
向に長尺の棒状体であり、光学箱６に対する折り返しミ
ラー５の組み付けは、その両端をそれぞれ、ミラー支持
体５ａに当接し、光学箱６の後壁６ａと折り返しミラー
５の間に弾性部材であるバネ１０をスナップフィットさ
せることによって行なわれる。The folding mirror 5 is a rod-like body long in the scanning direction of the scanning light L 1, the assembly of the reflecting mirror 5 with respect to the optical box 6, both ends thereof respectively, in contact with the mirror support member 5a, the optical box This is performed by snap-fitting a spring 10, which is an elastic member, between the rear wall 6a and the folding mirror 5.
【００２６】各バネ１０は、長尺の板バネを略Ｕ字形に
湾曲させて、平板状の底部１１とこれを挟んで対向する
一対の立設部１２、１３を設けたものであり、支持部で
ある一方の立設部１２に形成された係合穴１２ａを、光
学箱６の後壁６ａに一体成形された係止部である係止爪
６ｂに係合させた状態で、当接部である他方の立設部１
３が折り返しミラー５の背面に押圧され、さらに、中央
の底部１１が光学箱６の底壁に当接されるように構成さ
れている。Each of the springs 10 is formed by bending a long leaf spring into a substantially U-shape to provide a flat bottom 11 and a pair of standing portions 12 and 13 opposed to each other with the bottom 11 interposed therebetween. The engagement hole 12a formed in one of the upright portions 12 is engaged with a locking claw 6b which is a locking portion formed integrally with the rear wall 6a of the optical box 6, and is brought into contact therewith. The other standing part 1 which is a part
3 is pressed against the back surface of the folding mirror 5, and the bottom 11 at the center is in contact with the bottom wall of the optical box 6.
【００２７】光学箱６の底壁には、上記の係止爪６ｂを
一体成形するときの開口部である型抜き穴６ｃが残され
ており、バネ１０の底部１１は、前述のようにバネ１０
を折り返しミラー５と光学箱６の後壁６ａの間にスナッ
プフィットさせたときに型抜き穴６ｃを閉塞する。On the bottom wall of the optical box 6, there is left a punching hole 6c which is an opening for integrally forming the above-mentioned locking claw 6b, and the bottom 11 of the spring 10 is 10
Is snap-fitted between the mirror 5 and the rear wall 6a of the optical box 6 to close the die-cut hole 6c.
【００２８】このように、光学箱６に折り返しミラー５
を組み付けるためのバネ１０の一部を用いて係止爪６ｂ
の型抜き穴６ｃを閉塞すれば、光学箱６の内部を完全に
密封して外気の侵入を防ぎ、外気中の塵埃による回転多
面鏡３の汚染を回避できる。また、必要であれば、バネ
１０の底部１１と光学箱６の底壁の間に弾性材を介在さ
せて、型抜き穴６ｃのシールを強化する。As described above, the folding mirror 5 is mounted on the optical box 6.
Using a part of the spring 10 for assembling the locking claw 6b
By closing the punched hole 6c, the inside of the optical box 6 is completely sealed to prevent intrusion of outside air, and contamination of the rotary polygon mirror 3 by dust in the outside air can be avoided. If necessary, an elastic material is interposed between the bottom 11 of the spring 10 and the bottom wall of the optical box 6 to reinforce the sealing of the punched hole 6c.
【００２９】これによって、回転多面鏡を交換したり、
反射面を清浄化するメンテナンスの必要回数を大幅に削
減し、メンテナンスのコストの低い偏向走査装置を実現
できる。With this, the rotating polygon mirror can be replaced,
The number of required maintenance operations for cleaning the reflecting surface is greatly reduced, and a deflection scanning device with low maintenance cost can be realized.
【００３０】図２は一変形例を示す。これは、第１実施
例の折り返しミラー５を光学箱６に組み付けるバネ１０
と同様のバネ３０を用いて、結像レンズ２４を光学箱に
組み付けるもので、バネ３０は、平板状の底部３１とこ
れを挟んで対向する一対の立設部３２、３３を有し、図
示しない光学箱の底壁に立設された基準部材２５ａに結
像レンズ２４の各端を当接し、光学箱の底壁に立設され
たレンズ支持体２６ａと結像レンズ２４の間にバネ３０
をスナップフィットさせることによって結像レンズ２４
を固定する。光学箱の底壁には、バネ３０の係合穴３０
ａを係止する係止爪２６ｂをレンズ支持体２６ａに一体
成形するための型抜き穴２６ｃが設けられ、バネ３０の
底部３１が型抜き穴２６ｃを塞ぐことで、光学箱の内部
が密封される。必要であれば、型抜き穴２６ｃのまわり
を弾性材でシールしておくと、外気の侵入をより一層確
実に防ぐことができる。FIG. 2 shows a modification. This is because a spring 10 for assembling the folding mirror 5 of the first embodiment to the optical box 6 is used.
The imaging lens 24 is assembled to the optical box by using the same spring 30 as that described above. The spring 30 has a flat bottom 31 and a pair of standing portions 32 and 33 facing each other with the bottom 31 interposed therebetween. Each end of the imaging lens 24 is brought into contact with a reference member 25a provided on the bottom wall of the optical box not to be used, and a spring 30 is provided between the lens support 26a provided on the bottom wall of the optical box and the imaging lens 24.
The imaging lens 24 is snap-fitted
Is fixed. In the bottom wall of the optical box, the engagement hole 30 of the spring 30 is provided.
A mold release hole 26c is provided for integrally forming a locking claw 26b for retaining a with the lens support 26a, and the inside of the optical box is sealed by closing the mold release hole 26c with the bottom 31 of the spring 30. You. If necessary, by sealing the periphery of the punched hole 26c with an elastic material, it is possible to more reliably prevent the invasion of outside air.
【００３１】図３は第２実施例による偏向走査装置の主
要部を示す。折り返しミラー４５を光学箱４６の側壁の
内側に設けられたミラー支持体４５ａに押圧するバネ５
０は、光学箱４６の内部からその側壁を横切って外部へ
張り出す頂部５１と、光学箱４６の外表面に形成された
第１の係止部である係止爪４６ｂに係止する第１の支持
部である支持部５２と、折り返しミラー４５の背面に当
接される当接部５３を有し、バネ５０の支持部５２は、
光学箱４６の係止爪４６ｂを貫通させる係合穴５２ａを
有する。バネ５０の第２の支持部である頂部５１は、光
学箱４６の側壁の切欠部に設けられた第２の係止部であ
るボス部４６ｃを貫通させる貫通孔５１ａを有し、貫通
孔５１ａは、公知の打ち抜きによって形成されたもの
で、その一側縁から立ち上がる打ち抜き部分５１ｂが光
学箱４６のボス部４６ｃに当接されて、バネ５０の姿勢
を安定させる役目をする。FIG. 3 shows a main part of the deflection scanning apparatus according to the second embodiment. A spring 5 for pressing the folding mirror 45 against a mirror support 45a provided inside the side wall of the optical box 46
Reference numeral 0 denotes a top portion 51 extending from the inside of the optical box 46 to the outside across the side wall, and formed on the outer surface of the optical box 46.
First support for locking to a locking claw 46b as a first locking portion
Includes a support portion 52 is a part, the abutting portion 53 abuts against the rear surface of the reflecting mirror 45, the supporting portion 52 of the spring 50,
The optical box 46 has an engagement hole 52a that penetrates the locking claw 46b. The top portion 51 serving as a second support portion of the spring 50 has a through hole 51a that passes through a boss portion 46c serving as a second locking portion provided in a cutout portion of a side wall of the optical box 46. Is formed by known punching, and a punched portion 51b rising from one side edge thereof is brought into contact with the boss 46c of the optical box 46, and serves to stabilize the posture of the spring 50.
【００３２】折り返しミラー４５の組み付けは以下のよ
うに行なわれる。折り返しミラー４５の各端をミラー支
持体４５ａに当接し、バネ５０の当接部５３を上向きに
はね上げた状態で、バネ５０の頂部５１の貫通孔５１ａ
と支持部５２の係合穴５２ａをそれぞれ光学箱４６のボ
ス部４６ｃと係止爪４６ｂに係合させる。バネ５０の当
接部５３をはね上げている力を解放すると、当接部５３
が折り返しミラー４５の背面に押圧され、折り返しミラ
ー４５の組み付けが完了する。The folding mirror 45 is assembled as follows. Each end of the folding mirror 45 is in contact with the mirror support 45a, and the contact portion 53 of the spring 50 is flipped upward.
And the engaging hole 52a of the support part 52 is engaged with the boss part 46c and the locking claw 46b of the optical box 46, respectively. When the force for springing up the contact portion 53 of the spring 50 is released, the contact portion 53 is released.
Is pressed against the back surface of the folding mirror 45, and the assembly of the folding mirror 45 is completed.
【００３３】本実施例によれば、折り返しミラーを固定
するバネの係止爪が光学箱の側壁の外表面に設けられて
いるため、光学箱に係止爪の型抜き穴を設ける必要がな
い。すなわち、型抜き穴自体を不要とすることで、係止
爪の型抜き穴から外気が侵入することに起因するトラブ
ルを回避するものである。According to this embodiment, since the locking claw of the spring for fixing the folding mirror is provided on the outer surface of the side wall of the optical box, it is not necessary to provide the optical box with a hole for removing the locking claw. . That is, by eliminating the need for the die-cutting hole itself, it is possible to avoid troubles caused by outside air entering through the die-cutting hole of the locking claw.
【００３４】図４は第２実施例の第１の変形例を示す。
これは、光学箱４６にボス部４６ｃを設ける替わりに、
光学箱４６の上部開口を閉塞するふた部材４７の内側リ
ブ４７ａによって、バネ５０の第２の支持部である頂部
５１を光学箱４６の側壁の上端に押しつけて挟持するよ
うに構成したものである。また、バネ５０の支持部５２
の下端部５２ｂを外向きに曲げて、ふた部材４７の外周
リブ４７ｂに当接させることで、バネ５０の姿勢をより
一層安定させる。FIG. 4 shows a first modification of the second embodiment.
This means that instead of providing the boss 46c in the optical box 46,
An inner rib 47a of a lid member 47 that closes an upper opening of the optical box 46 presses the top 51, which is the second support portion of the spring 50, against the upper end of the side wall of the optical box 46 to hold it. . Further, the support portion 52 of the spring 50
By bending the lower end portion 52b outward and abutting the outer peripheral rib 47b of the lid member 47, the posture of the spring 50 is further stabilized.
【００３５】光学箱４６とふた部材４７との間を完全に
密封できるという利点が付加される。An additional advantage is that the space between the optical box 46 and the lid member 47 can be completely sealed.
【００３６】図５は、第２実施例の第２の変形例を示
す。これも、光学箱４６にボス部４６ｃを設ける替わり
に、光学箱４６の側壁の内側に第２の係止爪４６ｄを設
け、バネ５０には支持部５２と同様の第２の支持部５４
を設けてこれを、光学箱４６の側壁の内側に折り曲げて
係止爪４６ｄに係止させたものである。第２の係止爪４
６ｄは、光学箱４６から走査光を取り出す窓４８の真上
に配設されており、窓４８を型抜き穴として利用するこ
とができる。なお、窓４８は、光学箱４６の内部にすべ
ての部品を組み込んだうえで図示しない透明板によって
閉塞される。FIG. 5 shows a second modification of the second embodiment. Also in this case, instead of providing the boss portion 46c in the optical box 46, a second locking claw 46d is provided inside the side wall of the optical box 46, and the spring 50 has a second support portion 54 similar to the support portion 52.
Is bent inside the side wall of the optical box 46 and locked by the locking claw 46d. Second locking claw 4
6d is disposed right above a window 48 for taking out scanning light from the optical box 46, and the window 48 can be used as a punching hole. Note that the window 48 is closed by a transparent plate (not shown) after all the components are incorporated in the optical box 46.
【００３７】図６は、第２実施例の第３の変形例を示
す。これは、結像レンズ６４をバネ５０と同様のバネ７
０によって光学箱６６に組み付けるものである。バネ７
０は、頂部７１とその両端から下向きにのびる支持部７
２と当接部７３を有し、支持部７２と頂部７１は、光学
箱６６の係止爪６６ｂとボス部６６ｃにそれぞれ係合す
る係合穴７２ａと貫通孔７１ａを有し、貫通孔７１ａの
一側縁から立ち上がる打ち抜き部分７１ｂが、光学箱６
６のボス部６６ｃに当接されてバネ７０の姿勢を安定さ
せる。光学箱６６の側壁の外面に係止爪６６ｂが設けら
れており、光学箱６６に係止爪６６ｂの型抜き穴を必要
としないため、型抜き穴から外気が侵入することによる
トラブルはない。FIG. 6 shows a third modification of the second embodiment. This is because the imaging lens 64 is connected to the spring 7 similar to the spring 50.
0 indicates that the optical box 66 is assembled. Spring 7
0 is a top portion 71 and a support portion 7 extending downward from both ends thereof.
2 and an abutment portion 73, and the support portion 72 and the top portion 71 have an engagement hole 72a and a through hole 71a for engaging with the locking claw 66b and the boss portion 66c of the optical box 66, respectively. The punched portion 71b rising from one side edge of the optical box 6
6 stabilizes the posture of the spring 70 by contacting the boss 66c. The locking claw 66b is provided on the outer surface of the side wall of the optical box 66, and the optical box 66 does not require a die hole for the locking claw 66b. Therefore, there is no trouble due to outside air entering through the die hole.
【００３８】[0038]
【発明の効果】本発明は上述のように構成されているの
で、以下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.
【００３９】折り返しミラー等の組み付け部分から光学
箱内に外気が侵入して回転多面鏡を汚染するおそれがな
い。従って、偏向走査装置のメンテナンスのコストを大
幅に低減できる。このような偏向走査装置を用いること
で、ランニングコストの低い情報記録装置を実現でき
る。There is no danger that outside air will enter the optical box from an assembly part such as a folding mirror and contaminate the rotating polygon mirror. Therefore, the maintenance cost of the deflection scanning device can be significantly reduced. By using such a deflection scanning device, an information recording device with low running cost can be realized.
【図１】第１実施例による偏向走査装置を示すもので、
（ａ）はその模式断面図、（ｂ）は折り返しミラーの一
端部とこれを組み付けるバネを示す部分斜視図である。FIG. 1 shows a deflection scanning device according to a first embodiment,
(A) is a schematic sectional view, (b) is a partial perspective view showing one end of a folding mirror and a spring for assembling the same.
【図２】第１実施例の一変形例による偏向走査装置の主
要部を示す部分斜視図である。FIG. 2 is a partial perspective view showing a main part of a deflection scanning device according to a modification of the first embodiment.
【図３】第２実施例による偏向走査装置の主要部を示す
もので、（ａ）はその斜視図、（ｂ）は（ａ）のＡ−Ａ
線からみた断面図である。FIGS. 3A and 3B show a main part of a deflection scanning device according to a second embodiment, wherein FIG. 3A is a perspective view thereof, and FIG.
It is sectional drawing seen from the line.
【図４】第２実施例の第１の変形例の主要部を示す部分
断面図である。FIG. 4 is a partial sectional view showing a main part of a first modification of the second embodiment.
【図５】第２実施例の第２の変形例の主要部を示す部分
斜視図である。FIG. 5 is a partial perspective view showing a main part of a second modification of the second embodiment.
【図６】第２実施例の第３の変形例の主要部を示すもの
で、（ａ）はその斜視図、（ｂ）は（ａ）のＡ−Ａ線か
らみた断面図である。FIGS. 6A and 6B show a main part of a third modification of the second embodiment, wherein FIG. 6A is a perspective view thereof, and FIG. 6B is a cross-sectional view taken along line AA of FIG.
【図７】一従来例を示す模式平面図である。FIG. 7 is a schematic plan view showing a conventional example.
３ 回転多面鏡 ４，２４，６４ 結像レンズ ５，４５ 折り返しミラー ６，４６，６６ 光学箱 ６ｂ，２６ｂ，４６ｂ，４６ｄ，６６ｂ 係止爪 ７，４７ ふた部材 ８，４８ 窓 １０，３０，５０，７０ バネ 3 rotating polygon mirror 4, 24, 64 imaging lens 5, 45 folding mirror 6, 46, 66 optical box 6b, 26b, 46b, 46d, 66b locking claw 7, 47 lid member 8, 48 window 10, 30, 50 , 70 spring
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平８−20130（ＪＰ，Ａ) 特開 平８−122677（ＪＰ，Ａ) 特開 平７−325239（ＪＰ，Ａ) 特開 平８−146325（ＪＰ，Ａ) 特開 平１−251054（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G02B 26/10 ────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-8-20130 (JP, A) JP-A-8-122677 (JP, A) JP-A-7-325239 (JP, A) JP-A-8-208 146325 (JP, A) JP-A-1-251054 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G02B 26/10
Claims (6)
れる回転多面鏡と、その走査光を感光体に結像させる結
像光学系と、前記走査光の光路に配設された折り返しミ
ラーと、該折り返しミラーを前記光学箱に組み付ける少
なくとも１個の弾性部材を有し、該弾性部材が、前記光
学箱の係止部に係合する支持部と、前記光学箱の開口部
を覆うための底部と、前記折り返しミラーに当接される
当接部を備え、前記光学箱の開口部が、前記光学箱の係
止部を前記光学箱に一体成形するために設けられた型抜
き穴であることを特徴とする偏向走査装置。A rotating polygon mirror rotated by a driving means inside an optical box; an image forming optical system for forming an image of the scanning light on a photosensitive member; and a folding mirror disposed on an optical path of the scanning light. And at least one elastic member for assembling the folding mirror to the optical box, the elastic member being used to cover a support portion that engages with a locking portion of the optical box and an opening of the optical box. The optical box includes a bottom portion and an abutting portion that abuts on the folding mirror .
Die release provided to integrally mold the stop to the optical box
Deflection scanning apparatus according to claim holes der Rukoto come.
れる回転多面鏡と、その走査光を感光体に結像させる結
像レンズと、該結像レンズを前記光学箱に組み付ける少
なくとも１個の弾性部材を有し、該弾性部材が、前記光
学箱の係止部に係合する支持部と、前記光学箱の開口部
を覆うための底部と、前記結像レンズに当接される当接
部を備えていることを特徴とする偏向走査装置。2. A rotating polygon mirror rotated by a driving means inside an optical box, an image forming lens for forming an image of a scanning light on a photosensitive member, and at least one assembling the image forming lens to the optical box. An elastic member, wherein the elastic member engages with a locking portion of the optical box, a bottom portion for covering an opening of the optical box, and an abutment which is in contact with the imaging lens. A deflection scanning device, comprising:
を一体成形するために設けられた型抜き穴であることを
特徴とする請求項２記載の偏向走査装置。3. The deflection scanning device according to claim 2 , wherein the opening of the optical box is a die-cutting hole provided for integrally forming the locking portion of the optical box.
れる回転多面鏡と、その走査光を感光体に結像させる結
像光学系と、前記走査光の光路に配設された折り返しミ
ラーと、該折り返しミラーを前記光学箱に組み付ける少
なくとも１個の弾性部材を有し、該弾性部材が、前記光
学箱から前記走査光を取り出すための窓の近傍に配設さ
れた係止部に係合する支持部と、前記折り返しミラーに
当接される当接部を備え、前記光学箱の窓が、前記光学
箱の係止部を前記光学箱に一体成形するために設けられ
た型抜き穴であることを特徴とする偏向走査装置。4. A rotating polygon mirror rotated by a driving means inside an optical box, an image forming optical system for forming an image of the scanning light on a photosensitive member, and a folding mirror disposed on an optical path of the scanning light. Having at least one elastic member for assembling the folding mirror to the optical box, the elastic member engaging with a locking portion disposed near a window for extracting the scanning light from the optical box. And a contact portion contacting the folding mirror , wherein the window of the optical box is
Provided for integrally forming the locking portion of the box with the optical box.
It was punched holes der Rukoto deflection scanning apparatus according to claim.
れる回転多面鏡と、その走査光を感光体に結像させる結
像光学系と、前記走査光の光路に配設された折り返しミ
ラーと、該折り返しミラーを前記光学箱に組み付ける少
なくとも１個の弾性部材を有し、該弾性部材が、前記光
学箱の外表面に設けられた第１の係止部に係合する第１
の支持部と、前記折り返しミラーに当接される当接部
と、前記光学箱の上端に設けられた第２の係止部に係合
する第２の支持部を備えていることを特徴とする偏向走
査装置。5. A rotating polygon mirror rotated by driving means inside an optical box, an image forming optical system for forming an image of the scanning light on a photosensitive member, and a folding mirror disposed in an optical path of the scanning light. has at least one elastic member assembled the folding mirror to the optical box, first the elastic member engages the first locking portion provided on the outer surface of the optical box
And the support portion, the contact portion is brought into contact with the folding mirror
And a second locking portion provided at an upper end of the optical box.
A deflection scanning device, comprising:
れる回転多面鏡と、その走査光を感光体に結像させる結
像光学系と、前記走査光の光路に配設された折り返しミ
ラーと、該折り返しミラーを前記光学箱に組み付ける少
なくとも１個の弾性部材を有し、該弾性部材が、前記光
学箱の外表面に設けられた係止部に係合する第１の支持
部と、前記折り返しミラーに当接される当接部と、前記
光学箱とこれを覆うふた部材の間に挟持される第２の支
持部を備えていることを特徴とする偏向走査装置。 6. The optical box is rotated by driving means inside the optical box.
Rotating polygon mirror, and an image forming device for imaging the scanning light on the photoreceptor.
An image optical system, and a folding mirror provided in an optical path of the scanning light.
And a mirror for assembling the folding mirror to the optical box.
At least one elastic member, wherein the elastic member
First support for engaging a lock provided on the outer surface of the school box
Part, an abutting part abutting on the folding mirror,
A second support pinched between the optical box and a lid member covering the optical box
A deflection scanning device comprising a holding unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20647596A JP3352333B2 (en) | 1996-07-17 | 1996-07-17 | Deflection scanning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20647596A JP3352333B2 (en) | 1996-07-17 | 1996-07-17 | Deflection scanning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1031172A JPH1031172A (en) | 1998-02-03 |
| JP3352333B2 true JP3352333B2 (en) | 2002-12-03 |
Family
ID=16523999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20647596A Expired - Fee Related JP3352333B2 (en) | 1996-07-17 | 1996-07-17 | Deflection scanning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3352333B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4661024B2 (en) * | 2003-03-24 | 2011-03-30 | 富士ゼロックス株式会社 | Optical scanning apparatus and image forming apparatus |
| JP2005181501A (en) * | 2003-12-17 | 2005-07-07 | Kyocera Mita Corp | Optical scanner |
| JP5157093B2 (en) * | 2006-06-30 | 2013-03-06 | コニカミノルタビジネステクノロジーズ株式会社 | Laser scanning optical device |
| JP2008083099A (en) * | 2006-09-25 | 2008-04-10 | Fuji Xerox Co Ltd | Optical scanner |
| JP5140126B2 (en) * | 2010-10-01 | 2013-02-06 | Ｎｅｃアクセステクニカ株式会社 | Mirror support device and image reading device |
| JP6141056B2 (en) * | 2013-03-12 | 2017-06-07 | キヤノン株式会社 | Optical scanning apparatus and image forming apparatus |
| JP6618257B2 (en) * | 2015-01-08 | 2019-12-11 | キヤノン株式会社 | Optical scanning apparatus and image forming apparatus |
-
1996
- 1996-07-17 JP JP20647596A patent/JP3352333B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1031172A (en) | 1998-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3352333B2 (en) | Deflection scanning device | |
| JP3286137B2 (en) | Deflection scanning device | |
| JP3408061B2 (en) | Optical deflection device | |
| US6933959B2 (en) | Optical scanning device and image forming apparatus | |
| JP3408067B2 (en) | Deflection scanning device | |
| JPH11183818A (en) | Scanning optical device | |
| JP2004301898A (en) | Light deflector | |
| JPH09105882A (en) | Deflection scanning device | |
| JP3402862B2 (en) | Deflection scanning device | |
| JP4429741B2 (en) | Optical scanning device | |
| JP2000321519A (en) | Optical scanner and image forming device | |
| JP4622489B2 (en) | Optical scanning device | |
| JPH11194293A (en) | Deflection scanning device | |
| JPH0536408U (en) | fθ lens holding structure | |
| JPH11133336A (en) | Scanning optical device | |
| JP4642205B2 (en) | Scanning optical device | |
| JP2002341277A (en) | Optical scanner | |
| JPH10133134A (en) | Scanning optical device | |
| JPH09304716A (en) | Optical deflector | |
| JP2001013437A (en) | Deflection type scanner | |
| JPH0961740A (en) | Optical deflector | |
| JP2001330792A (en) | Optical writing unit | |
| JP2000162526A (en) | Optical scanner | |
| JP2002267982A (en) | Optical scanner | |
| JP2000039578A (en) | Optical scanner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070920 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080920 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090920 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090920 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100920 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100920 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110920 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110920 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120920 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120920 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130920 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |