JPH01116663A - Mirror in optical type moving system exposing device - Google Patents
Mirror in optical type moving system exposing deviceInfo
- Publication number
- JPH01116663A JPH01116663A JP27497287A JP27497287A JPH01116663A JP H01116663 A JPH01116663 A JP H01116663A JP 27497287 A JP27497287 A JP 27497287A JP 27497287 A JP27497287 A JP 27497287A JP H01116663 A JPH01116663 A JP H01116663A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- sandwiching
- support
- vibration
- moving direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims description 14
- 239000000463 material Substances 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 abstract 2
- 238000005452 bending Methods 0.000 description 7
- 230000005284 excitation Effects 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、静電写真複写機、ファクシミリ等の画像形成
装置の光学系移動式ｎ光装置におけるミラー、特に、原
稿台が固定され、これに対して光源やミラー等の光学系
が往復移動する光学系移動式露光装置におけるミラーの
改良に関するものである。Detailed Description of the Invention [Industrial Field of Application] The present invention relates to a mirror in a movable optical device of an image forming apparatus such as an electrostatographic copying machine or a facsimile machine, and in particular, to This invention relates to an improvement of a mirror in an optical system moving type exposure apparatus in which an optical system such as a light source and a mirror moves back and forth.
上記光学系移動式露光装置におけるミラーＭは、第６図
に示すように、３個の突部ａ、ｂ、ｃで支持される所謂
３点支持によって所定の姿勢に保持されているが、その
移動時、これを駆動する装置からの振動やその他の装置
等からの振動に起因してその反射面が、第７図に示すよ
うに、撓み振動する。これらの振動は、その振動数の少
ない方から１次振動、２次振動、３次振動・・・と呼び
、振動の形状を１次モード、２次モード、３次モード・
・・と呼ぶ、第７図（Ａ）、 （Ｂ）、 （Ｃ）はそれ
ぞれ１次モード、２次モード、３次モードを示している
。As shown in FIG. 6, the mirror M in the optical system moving type exposure apparatus is held in a predetermined position by so-called three-point support supported by three protrusions a, b, and c. During movement, the reflecting surface bends and vibrates due to vibrations from the device that drives it and vibrations from other devices, etc., as shown in FIG. These vibrations are called primary vibration, secondary vibration, tertiary vibration, etc. in descending order of frequency, and the shape of the vibration is divided into primary mode, secondary mode, tertiary mode, etc.
7 (A), (B), and (C) show the primary mode, secondary mode, and tertiary mode, respectively.
そして、上記ミラーにおける各振動モードは、ミラーの
反射面を撓ませて画像形成に悪影響が及ぼされるところ
から、これをできるだけ抑制する必要がある０、そして
、前記第７図からも理解されるように、一般に、１次モ
ードは他のモードに比べてその振動が大きく、この１次
モードの振動をできるだけ小さく抑制すれば、上記悪影
響を殆ど解消できるのである。Each vibration mode in the mirror deflects the reflective surface of the mirror and has an adverse effect on image formation, so it is necessary to suppress this as much as possible, and as can be understood from FIG. In general, the vibration in the primary mode is larger than in other modes, and if the vibration in the primary mode is suppressed as small as possible, most of the above-mentioned adverse effects can be eliminated.
そこで、例えば特開昭６０−２４４９２１号公報に示さ
れるように、ミラーの非反射面側（ミラーの裏面側）に
、ゴム等の緩衝部材及びアルミニウム又は鉄等の金属部
材をこの順に重ね合わせ、前記緩衝部材内において基部
からの加振力を振動エネルギーを熱エネルギーに変換す
ることにより、ミラーの振動を可及的速やかに減衰させ
るようにしたものが提案されている。Therefore, as shown in JP-A-60-244921, for example, a cushioning member such as rubber and a metal member such as aluminum or iron are stacked in this order on the non-reflective surface side of the mirror (back side of the mirror). It has been proposed that the vibration of the mirror is attenuated as quickly as possible by converting the vibration energy of the excitation force from the base into thermal energy within the buffer member.
しかしながら、上記従来技術のものでは、外部からの加
振力によってミラーが振動することが避けられず、又、
加振力が長く続いたり、或いは繰り返し印加されるよう
な場合、ミラーに１次モードの振動を始めとする各種の
振動が生じるといった欠点がある。However, in the conventional technology described above, it is inevitable that the mirror vibrates due to external excitation force, and
If the excitation force continues for a long time or is applied repeatedly, there is a drawback that various vibrations including first-order mode vibrations occur in the mirror.
本発明は、上述の事柄に留意してなされたもので、その
目的とするところは、加振力が加えられても、少なくと
も１次モードの振動を生じないようにした光学系移動式
露光装置におけるミラーを提供することにある。The present invention has been made with the above-mentioned considerations in mind, and an object of the present invention is to provide a moving exposure apparatus with an optical system that does not cause at least first-order mode vibration even when an excitation force is applied. The goal is to provide a mirror for
〔問題点を解決するための手段〕
上述の目的を達成するため、本発明に係る光学系移動式
露光装置におけるミラーは、その移動方向と直交する方
向に沿う両端部を挟み込む部材を、前記移動方向と直交
する方向においてその少なくとも略中央位置に設けた点
に特徴がある。[Means for Solving the Problems] In order to achieve the above-mentioned object, the mirror in the optical system movable exposure apparatus according to the present invention has a member sandwiching both end portions along a direction orthogonal to the moving direction. It is characterized in that it is provided at least approximately at the center position in the direction orthogonal to the direction.
上記特徴的構成によれば、ミラーの移動方向と直交する
方向に沿う両端部を挟み込む部材が、前記移動方向と直
交する方向においてその少なくとも略中央位置に設けら
れているので、加振力が外部から加えられても、ミラー
においては、少なくとも１次モードの振動が生ずること
がない。According to the above-mentioned characteristic configuration, the member that sandwiches both ends of the mirror along the direction orthogonal to the moving direction is provided at least at a substantially central position in the direction orthogonal to the moving direction, so that the excitation force is applied to the outside. Even if the vibration is applied to the mirror, at least no vibration in the first-order mode will occur in the mirror.
以下、本発明の一実施例を、図面を参照しながら説明す
る。An embodiment of the present invention will be described below with reference to the drawings.
第４図は本発明を適用した光学系移動式の静電写真複写
機を概略的に示すもので、同図において、１は複写機本
体で、その上部にはコンタクトガラス２、原稿押さえ３
を有する一方、内部には感光体４とその周囲に配置され
た帯電部５、現像部６、転写部７、複写紙分離部８、ク
リーニング部９等を備えると共に、コンタクトガラス２
の下部空間には光学系移動式露光装置（以下、単に露光
装置と云う）１０が設けられ、更に、給紙搬送装置１１
、排紙搬送装置１２、定着装置１３、排紙ローラ対１４
、給紙カセット１５、排紙トレイ１６等を備えている。FIG. 4 schematically shows a movable optical system electrophotographic copying machine to which the present invention is applied.
On the other hand, the interior includes a photoconductor 4, a charging section 5, a developing section 6, a transfer section 7, a copy paper separation section 8, a cleaning section 9, etc. arranged around the photoconductor 4, and a contact glass 2.
An optical system movable exposure device (hereinafter simply referred to as the exposure device) 10 is provided in the lower space of the
, paper ejection transport device 12, fixing device 13, paper ejection roller pair 14
, a paper feed cassette 15, a paper discharge tray 16, and the like.
前記露光装置ＩＯは、第５図にも示すように、原稿面Ｓ
を投光する光ｉｎとりフレフタ−１８と原稿面Ｓからの
反射光を矢印Ｐ方向に反射投光する第１ミラー１９とを
保持する光源保持体２０と、第１ミラー１９からの光を
反射して矢印Ｐとは反対の矢印方向Ｑに反射投光する第
２ミラー２１．第３ミラー２２を保持するミラー保持体
２３とを矢印Ｐ、 Ｑ方向に往復移動自在に設けると共
に、第３ミラー２２からの反射光を集光するレンズ装置
２４と、このレンズ装置２４を経た光を感光体４に向け
て反射する第４ミラー２５とを備えてなる。尚、第５図
において、２６、２７はそれぞれ保持体２０．２３の両
端部を支持する保持体支持ロッド、保持体支持部材で、
詳細には図示してないが、保持体２０．２３は保持体支
持ワンド２６側においてそれぞれ２個の軸受により２点
支持され、保持体支持部材２７側において１点支持され
ている。The exposure device IO, as shown in FIG.
A light source holder 20 that holds a light in-receiving lefter 18 that emits light and a first mirror 19 that reflects and emits light reflected from the document surface S in the direction of arrow P, and a light source holder 20 that reflects light from the first mirror 19. The second mirror 21. reflects and projects light in the direction of the arrow Q opposite to the arrow P. A mirror holder 23 that holds the third mirror 22 is provided so as to be movable back and forth in the directions of arrows P and Q, and a lens device 24 that collects the reflected light from the third mirror 22 and the light that passes through the lens device 24 are provided. and a fourth mirror 25 that reflects the light toward the photoreceptor 4. In FIG. 5, 26 and 27 are a holder support rod and a holder support member that respectively support both ends of the holder 20 and 23.
Although not shown in detail, the holders 20 and 23 are each supported at two points on the holder support wand 26 side by two bearings, and supported at one point on the holder support member 27 side.
２８は光源保持体２０及びミラー保持体２３を矢印Ｐ。28 indicates the light source holder 20 and mirror holder 23 with arrow P.
Ｑ方向に往復移動させるための光学系駆動装置で、光源
保持体２０及びミラー保持体２３の往復移動範囲を外れ
た部位の複写機本体１に２個の経路変曲用回動体２９．
３０を設けると共に、図外のモータに連設された回動体
３１と中間回動体３２とを複写機本体１に設ける一方、
ミラー保持体２３に遊転回動体３３を取り付け、伝動ワ
イヤー３４の一端を複写機本体１側の固定部３５に固着
して、伝動ワイヤー３４を、遊転回動体３３と、一方の
経路変曲用回動体２９と、中間回動体３２と、回動体３
１と、他方の経路変曲用回動体３０とに順次巻き掛ける
と共に、前記伝動ワイヤー３４を止着体３６を介して光
源保持体２０に取り付け、更に、この伝動ワイヤー３４
を再び遊転回動体３３に巻き掛けると共に、その端部を
複写機本体１側の他の固定部３７に止着してなり、前記
図外のモータの正逆転に伴って、光源１７からレンズ装
置２４に至る光路長が常に一定になるように、光源保特
休２０をミラー保持体２３の２倍の速度で同方向に往復
移動させることができるようにしである。This is an optical system drive device for reciprocating in the Q direction, and two path bending rotating bodies 29.
30, and a rotating body 31 and an intermediate rotating body 32 connected to a motor (not shown) are provided in the copying machine main body 1,
The free rotating body 33 is attached to the mirror holder 23, and one end of the transmission wire 34 is fixed to the fixed part 35 on the side of the copying machine main body 1, so that the transmission wire 34 is connected to the free rotating body 33 and one of the path bending rotations. Moving body 29, intermediate rotating body 32, and rotating body 3
1 and the other path-changing rotating body 30, the transmission wire 34 is attached to the light source holder 20 via the fastening body 36, and the transmission wire 34 is
is again wound around the freely rotating rotating body 33, and its end is fixed to another fixed part 37 on the copying machine main body 1 side. The light source retainer 20 can be moved back and forth in the same direction at twice the speed of the mirror holder 23 so that the optical path length to the mirror holder 24 is always constant.
第１図乃至第３図は光源保持体２０における第１ミラー
１９の取り付は部分を示すもので、第１図において、３
８．３９は光源保持体２０の上面に取り付けられる一対
の支持体で、それぞれ支持板４０．４１と取付体４２．
４３とで構成されており、両支特体３８゜３９は光源保
持体２０に適宜の手段で、支持板４０．４１の平面が互
いに平行になるように取り付けられている。そして、取
付体４２．４３の一部は、斜め上方に切り起こされて同
方向・同角度で傾斜する保持面４２ａ、 ４３Δに形成
されている。1 to 3 show only a portion of the attachment of the first mirror 19 to the light source holder 20.
Reference numeral 8.39 denotes a pair of supports attached to the upper surface of the light source holder 20, including a support plate 40.41 and a mounting body 42.8, respectively.
43, and both support members 38 and 39 are attached to the light source holder 20 by appropriate means so that the planes of the support plates 40 and 41 are parallel to each other. Parts of the mounting bodies 42 and 43 are formed into holding surfaces 42a and 43Δ that are cut diagonally upward and inclined in the same direction and at the same angle.
前記支持板４０．４１には、保持面４２ａ、 ４３ａと
同角度であり互いに対応する位置に支持面４０ａ、 ４
１ａが傾斜して形成され、かつ、それらの下端から斜め
下方に、支持面４０ａ、 ４１ａに対して略直角に支承
面４０ｂ、 ４１ｂが形成されて、支持面４０ａ、 ４
１ａと支承面４０ｂ、 ４１ｂによって、第１ミラー１
９を支持する支持用切欠孔４４．４５が構成されている
。そして、支持面４０ａの両端部に突部４６ａ、 ４６
ｂが、支持面４１ａの中央部に突部４６ｃがそれぞれ設
けられて、支持用切欠孔４４．４５に挿入された第１ミ
ラー１９の反射面を前記三個の突部４６ａ、 ４６ｂ、
４６ｃで支持している。The support plate 40.41 has support surfaces 40a, 4 at the same angle as the support surfaces 42a, 43a and at positions corresponding to each other.
1a are formed to be inclined, and support surfaces 40b and 41b are formed obliquely downward from their lower ends at substantially right angles to the support surfaces 40a and 41a.
1a and bearing surfaces 40b, 41b, the first mirror 1
Support cutout holes 44 and 45 for supporting 9 are formed. Then, protrusions 46a, 46 are provided at both ends of the support surface 40a.
b is provided with a protrusion 46c at the center of the support surface 41a, and the reflective surface of the first mirror 19 inserted into the support notch hole 44.45 is connected to the three protrusions 46a, 46b,
It is supported by 46c.
４７、４８は支持用切欠孔４４．４５に挿入されて第１
ミラー１９を加圧する板ばねで、これらの一端に折曲壁
４７ａ、 ４８ａが設けられ、折曲壁４７ａの先端中央
部に設けた加圧突部４９ａ及び折曲壁４８ａの先端に間
隔をおいて設けた加圧突部４９ｂ、 ４９ｃのそれぞれ
が、第１ミラー１９の裏面に当接している。47 and 48 are inserted into the support notch holes 44 and 45 to form the first
A leaf spring pressurizes the mirror 19, and bent walls 47a and 48a are provided at one end of the leaf spring, and a pressure protrusion 49a is provided at the center of the tip of the bending wall 47a, and a gap is formed between the tip of the bending wall 48a. Each of the pressurizing protrusions 49b and 49c provided therein is in contact with the back surface of the first mirror 19.
前記板ばね４７．４８は止めねじ５０．５０ （第１図
では一方しか示してなレリを保持面４２ａ、 ４３ａに
設けたねじ孔（図外）ねじ込み、かつ締め付けてそれぞ
れ保持面４２ａ、 ４３ａに固定されて、第１ミラー１
９を加圧している。そして、板ばね４７の加圧突部４９
ａは、支持面４０ａの中間に、また、板ばね４８の加圧
突部４９ｂ、 ４９ｃは支持面４１ａの突部４６ｃの両
側にそれぞれ位置して、第１ミラー１９の各端部をその
両面から３点で支持している。The leaf springs 47, 48 are secured to the retaining surfaces 42a, 43a by screwing in setscrews 50, 50 (only one of which is shown in FIG. fixed, the first mirror 1
9 is pressurized. Then, the pressure protrusion 49 of the leaf spring 47
a is located in the middle of the support surface 40a, and the pressure protrusions 49b and 49c of the leaf spring 48 are located on both sides of the protrusion 46c of the support surface 41a, so that each end of the first mirror 19 is pressed against both surfaces thereof. It is supported by three points.
而して、上記のようにして支持された第１ミラー１９移
動方向（第１図における矢印ＰＱ力方向と直交する方向
（同図において矢印ＸＹで示す方向）における第１ミラ
ー１９の両側部１９ａ、 １９ｂのそれぞれ中間部近傍
に、両側部１９ａ、 １９ｂを挟み込む部材５１が設け
られている。Thus, both sides 19a of the first mirror 19 supported as described above in the moving direction (direction perpendicular to the arrow PQ force direction in FIG. 1 (direction indicated by arrows XY in the same figure)) , 19b, a member 51 that sandwiches both side portions 19a, 19b is provided near the intermediate portion of each of them.
即ち、この挟み部材５１は、第２図及び第３図にも示す
ように、取付板５２とこの取付板５２の一端から斜め上
方に傾斜するように連設された断面形状がコ字状の挾み
部５３とからなり、挟み部５３の互いに平行な挾み板部
５３ａ、 ５３ｂ間の間隔は、第１ミラー１９の幅（第
３図においてＷで示す）より若干大きくしであると共に
、挟み板部５３ａ、 ５３ｂの相対向する位置には貫通
孔５４．５４ （第３図では一方しか示してない）が設
けである。That is, as shown in FIGS. 2 and 3, the sandwiching member 51 has a U-shaped cross-section and is connected to a mounting plate 52 so as to be inclined obliquely upward from one end of the mounting plate 52. The spacing between the mutually parallel sandwiching plate parts 53a and 53b of the sandwiching part 53 is slightly larger than the width of the first mirror 19 (indicated by W in FIG. 3), and Through holes 54 and 54 (only one of which is shown in FIG. 3) are provided at opposing positions of the sandwich plate portions 53a and 53b.
そして、この挟み部材５１を光源保持体２ｏの矢印ＸＹ
力方向おける略中間位置においてボルト５５・・・等に
よって固定した状態で、両側部１９ａ、 １９ｂを挟み
板部５３ａ、 ５３ｂ間に入れ込むようにして、第１ミ
ラー１９をセットし、貫通孔５４．５４を挿通するボル
ト５６の他端をナフト５７によって締め込むことにより
、挟み板部５３ａ、 ５３ｂによって第１ミラー１９の
両側部１９ａ、 １９ｂの略中央部分が挾み込まれ、第
１ミラー１９と挟み部材５１とを一体化しである。Then, move this sandwiching member 51 along the arrows X and Y on the light source holder 2o.
The first mirror 19 is set in such a manner that both side parts 19a and 19b are inserted between the sandwich plate parts 53a and 53b while being fixed with bolts 55, etc. at an approximately intermediate position in the force direction, and the first mirror 19 is inserted into the through holes 54 and 54. By tightening the other end of the bolt 56 through the napht 57, the substantially central portions of both sides 19a and 19b of the first mirror 19 are sandwiched by the sandwich plate portions 53a and 53b, and the first mirror 19 and the sandwich plate portions 53b are sandwiched. It is integrated with the member 51.
上記挟み部材５１は、その固有振動数が第１ミラー１９
の固有振動数と異なるもの、好ましくは、第１ミラー１
９の固有振動数よりも高い固有振動数を有する材料で形
成されており、例えば第１ミラー１９がシリカよりなる
ものであるときは、アルミニウムが好適である。これば
、アルミニウムは重量の割りには曲げ剛さが大きいから
である。従って、挟み部材５１はこのような特性を有す
るものであれば、アルミニウム以外の材料で構成しても
よいことは云うまでもない。The sandwiching member 51 has a natural frequency equal to that of the first mirror 19.
different from the natural frequency of the first mirror 1, preferably the first mirror 1
For example, when the first mirror 19 is made of silica, aluminum is suitable. This is because aluminum has high bending stiffness relative to its weight. Therefore, it goes without saying that the sandwiching member 51 may be made of a material other than aluminum as long as it has such characteristics.
上述のように、第１ミラー１９の移動方向と直交する方
向に沿う両端部１９ａ、 １９ｂを挟み込む部材５１が
、前記移動方向と直交する方向においてその略中央位置
に設けられているので、加振力が外部から加えられても
、第１ミラー１９には１次モードの振動が生ずることが
なく、従って、第１ミラー１９の撓み振動が大幅に低減
し、画像に歪みを生じたりすることがなくなる。As described above, since the member 51 that sandwiches both end portions 19a and 19b of the first mirror 19 in the direction orthogonal to the moving direction is provided at approximately the center position in the direction orthogonal to the moving direction, the vibration is not applied. Even if a force is applied from the outside, no first-order mode vibration is generated in the first mirror 19. Therefore, the bending vibration of the first mirror 19 is significantly reduced, and no distortion occurs in the image. It disappears.
尚、上述の実施例では、挾み部材５１を移動方向と直交
する方向においてその略中央位置に設けるようにしてい
たが、この設置位置は多少のずれがあってもよい。又、
挟み部材５１を複数個設けて、１次モードの振動のみな
らず、他のモードの振動をも防止するようにしてもよい
。In the above-described embodiment, the clamping member 51 is provided at approximately the center position in the direction perpendicular to the direction of movement, but this installation position may be slightly shifted. or,
A plurality of pinching members 51 may be provided to prevent not only vibrations in the first mode but also vibrations in other modes.
更に、挟み部材５１は光源保持体２０に必ずしも固定さ
れる必要はなく、第１ミラー１９と一体的になるように
取り付けられていればよい。Further, the sandwiching member 51 does not necessarily need to be fixed to the light source holder 20, but may be attached so as to be integral with the first mirror 19.
そして、本発明は第１ミラー１９のみならず、第２ミラ
ー２１．第３ミラー２２においても適用することができ
る。The present invention applies not only to the first mirror 19 but also to the second mirror 21 . It can also be applied to the third mirror 22.
〔発明の効果〕
以上説明したように、本発明に係る光学系移動式露光装
置におけるミラーは、その移動方向と直交する方向に沿
う両端部を挟み込む部材を、前記移動方向と直交する方
向においてその少なくとも略中央位置に設けているので
、加振力が外部から加えられても、ミラーにおいては、
少なくとも１次モードの振動が生ずることがなく、従っ
て、鮮明な画像形成を行うことができる。[Effects of the Invention] As explained above, the mirror in the optical system movable exposure apparatus according to the present invention has a member sandwiching both ends in a direction perpendicular to the direction of movement, and a member that holds the mirror in the direction perpendicular to the direction of movement. Since it is provided at least at approximately the center position, even if an excitation force is applied from the outside, the mirror will not
At least first-order mode vibrations do not occur, and therefore clear images can be formed.
第１図乃至第５図は本発明の一実施例を示し、第１図は
本発明に係るミラー及びその取付は構造を示す斜視図、
第２図は側断面図、第３図は要部の分解斜視図、第４図
は本発明を適用した静電写真複写機全体の概略断面図、
第５図は露光装置及びその駆動装置を示す分解斜視図で
ある。
第６図及び第７図は従来技術を説明するための図で、第
６図はミラーの斜視図、第７図（Ａ）。
（Ｂ）、 （Ｃ）はミラーに生ずる撓み振動を示す図で
ある。
１７・・・光源、１９・・・第１ミラー、２１・・・第
２ミラー、２２・・・第３ミラー、１９ａ、 １９ｂ・
・・ミラーの側部、５１・・・挟み部材、ＸＹ・・・ミ
ラーの移動方向と直交する方向。
出 願 人 三田工業株式会社
代 理 人 弁理士 藤本英夫
第３図
第６図
第７図
（Ａ）４ニー−へ
（Ｂ） ｔ−’ユニ※アー１
（Ｃ） 計二≠７−二八1 to 5 show one embodiment of the present invention, and FIG. 1 is a perspective view showing the structure of the mirror and its attachment according to the present invention;
FIG. 2 is a side sectional view, FIG. 3 is an exploded perspective view of the main parts, and FIG. 4 is a schematic sectional view of the entire electrostatographic copying machine to which the present invention is applied.
FIG. 5 is an exploded perspective view showing the exposure device and its driving device. 6 and 7 are diagrams for explaining the prior art, in which FIG. 6 is a perspective view of a mirror and FIG. 7 (A). (B) and (C) are diagrams showing bending vibrations occurring in the mirror. 17... Light source, 19... First mirror, 21... Second mirror, 22... Third mirror, 19a, 19b.
... Mirror side part, 51 ... Sandwiching member, XY ... Direction perpendicular to the moving direction of the mirror. Applicant: Sanda Kogyo Co., Ltd. Representative: Patent Attorney: Hideo Fujimoto
Claims (1)
けるミラーにおいて、その移動方向と直交する方向に沿
う両端部を挟み込む部材を、前記移動方向と直交する方
向においてその少なくとも略中央位置に設けたことを特
徴とする光学系移動式露光装置におけるミラー。In a mirror in a moving optical exposure apparatus in which a light source and a mirror move together, a member for sandwiching both ends in a direction perpendicular to the direction of movement is provided at least at a substantially central position of the mirror in a direction perpendicular to the direction of movement. A mirror in a moving optical exposure device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62274972A JP2694270B2 (en) | 1987-10-30 | 1987-10-30 | Mirror in movable optical exposure system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62274972A JP2694270B2 (en) | 1987-10-30 | 1987-10-30 | Mirror in movable optical exposure system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01116663A true JPH01116663A (en) | 1989-05-09 |
| JP2694270B2 JP2694270B2 (en) | 1997-12-24 |
Family
ID=17549128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62274972A Expired - Fee Related JP2694270B2 (en) | 1987-10-30 | 1987-10-30 | Mirror in movable optical exposure system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2694270B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0381953U (en) * | 1989-12-08 | 1991-08-21 | ||
| JPH04257815A (en) * | 1991-02-12 | 1992-09-14 | Fuji Xerox Co Ltd | Reflecting mirror support structure of raster scanner |
| US7594770B2 (en) | 2005-07-19 | 2009-09-29 | Alps Electric Co., Ltd. | Ink ribbon cassette |
| JP2009276395A (en) * | 2008-05-12 | 2009-11-26 | Nec Access Technica Ltd | Optical unit, image reader, and optical unit regulation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5118779U (en) * | 1974-07-26 | 1976-02-10 | ||
| JPS5118779A (en) * | 1974-08-06 | 1976-02-14 | Kuraray Co | Bunsananteizai oyobi soreomochiiru kendakujugohoho |
| JPS5870207A (en) * | 1981-10-23 | 1983-04-26 | Ricoh Co Ltd | Mirror fixing device for illumination device |
-
1987
- 1987-10-30 JP JP62274972A patent/JP2694270B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5118779U (en) * | 1974-07-26 | 1976-02-10 | ||
| JPS5118779A (en) * | 1974-08-06 | 1976-02-14 | Kuraray Co | Bunsananteizai oyobi soreomochiiru kendakujugohoho |
| JPS5870207A (en) * | 1981-10-23 | 1983-04-26 | Ricoh Co Ltd | Mirror fixing device for illumination device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0381953U (en) * | 1989-12-08 | 1991-08-21 | ||
| JPH04257815A (en) * | 1991-02-12 | 1992-09-14 | Fuji Xerox Co Ltd | Reflecting mirror support structure of raster scanner |
| US7594770B2 (en) | 2005-07-19 | 2009-09-29 | Alps Electric Co., Ltd. | Ink ribbon cassette |
| JP2009276395A (en) * | 2008-05-12 | 2009-11-26 | Nec Access Technica Ltd | Optical unit, image reader, and optical unit regulation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2694270B2 (en) | 1997-12-24 |
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| Date | Code | Title | Description |
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| LAPS | Cancellation because of no payment of annual fees |