JP5544694B2 - Optical element fixing mechanism, optical scanning device, and image forming apparatus - Google Patents

Optical element fixing mechanism, optical scanning device, and image forming apparatus Download PDF

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JP5544694B2
JP5544694B2 JP2008232722A JP2008232722A JP5544694B2 JP 5544694 B2 JP5544694 B2 JP 5544694B2 JP 2008232722 A JP2008232722 A JP 2008232722A JP 2008232722 A JP2008232722 A JP 2008232722A JP 5544694 B2 JP5544694 B2 JP 5544694B2
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adhesive
optical element
image forming
optical
fixing mechanism
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文刀 安藤
準 吉田
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Ricoh Co Ltd
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Description

本発明は、デジタル複写機やレーザプリンタ等において使用される光学素子を備える光学素子固定機構、光走査装置、及び画像形成装置に関する。   The present invention relates to an optical element fixing mechanism including an optical element used in a digital copying machine, a laser printer, and the like, an optical scanning device, and an image forming apparatus.

画像形成装置は、昨今多様化するニーズに対応するために多くのシリーズ展開や多彩なバリエーションが求められており、開発に際して開発期間の短縮、コスト低減、さらに小型化などが必要とされる。こで、感光体、現像装置や転写装置等の各ユニットの小型化、各ユニット間隔の狭小化に伴い、光走査装置も小型化が要求される。   In order to meet the diversifying needs of image forming apparatuses in recent years, many series development and various variations are required, and development requires shortening the development period, reducing costs, and further miniaturization. As the units such as the photosensitive member, the developing device, and the transfer device are downsized and the intervals between the units are reduced, the optical scanning device is also required to be downsized.

光走査装置の品質劣化には、取付け誤差、形状誤差などに代表されるメカ的劣化と、装置の温度変化に対する温度特性的劣化がある。   The quality deterioration of the optical scanning device includes mechanical deterioration represented by an attachment error, a shape error, and the like, and temperature characteristic deterioration with respect to a temperature change of the device.

メカ的劣化に関しては、光学素子を調整しながら取付けるなど、組立時に劣化分を吸収する手法が広く用いられているが、小型化に伴いさらに調整が難しくなってきている。   Regarding mechanical degradation, a method of absorbing degradation during assembly, such as mounting while adjusting an optical element, is widely used. However, adjustment is becoming more difficult with downsizing.

例えば、調整を行うにあたって、組立のどの時点で該調整を行うか、どの光学素子から調整するかという問題があり、その設定によっては調整可能範囲と、組立方法の展開性が変わってくる。したがって調整方式、調整順序も光学設計と同等に重要なものとなる。   For example, when performing adjustment, there is a problem of at which point in the assembly the adjustment is performed and from which optical element, and the adjustable range and the expandability of the assembly method vary depending on the setting. Therefore, the adjustment method and the adjustment order are as important as the optical design.

特許文献１には、走査線の品質向上を目的とし、走査レンズ（ｆθレンズ）とシリンドリカルレンズを接着剤塗布した状態で位置調整し、調整後に紫外線を照射して固定する光走査装置の調整方法が開示されている。   Patent Document 1 discloses an optical scanning device adjustment method in which the position of a scanning lens (fθ lens) and a cylindrical lens is adjusted with an adhesive applied for the purpose of improving the quality of the scanning line, and ultraviolet light is irradiated and fixed after adjustment. Is disclosed.

また、特許文献２には、光学素子の有効面への接着剤付着を防止して、接着前後の精度変化の抑制や光学性能の劣化防止するために、過剰な接着剤が、接着位置近傍の接着剤溜り部に溜まるようにする技術について開示されている。
特開平７−２３４３７０号公報 特許第３８３８０９０号公報 Further, Patent Document 2 discloses that an excessive amount of adhesive is present in the vicinity of the bonding position in order to prevent adhesion of the adhesive to the effective surface of the optical element and to suppress a change in accuracy before and after bonding and to prevent deterioration of optical performance. A technique for collecting in an adhesive reservoir is disclosed.
JP-A-7-234370 Japanese Patent No. 3838090

ところで、接着剤の特性（粘度）は、使用環境の温度変化により変化する。そのため、筐体の接着座面上に接着剤を塗布した際に塗布量が多い場合や少ない場合があると、特許文献２の発明では、接着剤の横への広がりを防ぐことはできるが、接着剤の液面高さに高低差が生じてしまい、所望の接着面積が得られないことや、レンズ面に回り込みしてしまうなどの不具合が発生してしまう。   By the way, the characteristic (viscosity) of an adhesive agent changes with the temperature change of a use environment. Therefore, when the amount of application is large or small when applying the adhesive on the adhesive seating surface of the housing, the invention of Patent Document 2 can prevent the adhesive from spreading laterally, A difference in height occurs in the liquid level of the adhesive, resulting in problems such as failure to obtain a desired bonding area and wrapping around the lens surface.

図８は、従来の問題点について示す図である。すなわち、図８（ａ）に示すように接着剤吐出器１２２を用いて、第１筐体１１４の接着座面１２０に接着剤１２１を塗布すると、接着剤１２０は時間経過と共に濡れ広がり、接着剤１２１の液高さが低くなってしまう。   FIG. 8 is a diagram showing a conventional problem. That is, as shown in FIG. 8A, when the adhesive 121 is applied to the adhesive seating surface 120 of the first housing 114 using the adhesive dispenser 122, the adhesive 120 spreads out with time and the adhesive 120 The liquid height of 121 becomes low.

そのため、図８（ｂ）に示すように、シリンドリカルレンズ１０４と接着剤１２１とが当接しない不具合や、シリンドリカルレンズ１０４と接着剤１２１とが当接しても、所望の接着面積１２３が得られなく、接着強さ不足による剥れや、光学特性を低下させてしまうといった問題がある。   For this reason, as shown in FIG. 8B, even if the cylindrical lens 104 and the adhesive 121 do not come into contact with each other, or the cylindrical lens 104 and the adhesive 121 come into contact with each other, a desired bonding area 123 cannot be obtained. There are problems such as peeling due to insufficient adhesive strength and deterioration of optical properties.

そこで本発明は、上記問題点に鑑みてなされたものであり、製造工程を複雑にしたり、コストをむやみに高騰させることなく、筐体の接着座面上に接着剤を塗布後に液面高さが変わらないようにして、所望の接着面積を得られるようにし、接着強さ不足による剥れの発生を防止することを目的とする。   Therefore, the present invention has been made in view of the above problems, and the liquid level height after applying the adhesive on the adhesive seating surface of the housing without complicating the manufacturing process or increasing the cost unnecessarily. In order to prevent the occurrence of peeling due to insufficient adhesive strength, the desired adhesive area can be obtained.

上記課題を解決するため、本発明における光学素子固定機構は、接着剤を用いて光学素子を固定する座面の外周部に、座面の稜線に対して平行に座面に隣接して包囲する接着剤の濡れ広がりを抑制し、液面高さを制御する稜線に対して平行な複数のヘアーライン状で深さ０．３ｍｍ、幅０．１ｍｍ程度の細い溝が形成された細隙溝と、稜線と細隙溝との間に細隙溝より大きな溝幅を有する稜線に対して平行な複数の粗隙溝と、を備えることを特徴とする。 In order to solve the above-described problems, the optical element fixing mechanism according to the present invention surrounds the outer peripheral portion of the seat surface that fixes the optical element with an adhesive, adjacent to the seat surface in parallel to the ridgeline of the seat surface. A slit groove in which a thin groove having a depth of 0.3 mm and a width of about 0.1 mm is formed in a plurality of hairline shapes parallel to a ridge line that controls the wetting spread of the adhesive and controls the liquid surface height, A plurality of coarse gap grooves parallel to the ridge line having a larger groove width than the narrow groove are provided between the ridge line and the narrow groove.

細隙溝は、少なくとも１０本以上が隣接して平行に形成されていることを特徴とする。   At least 10 or more slit grooves are formed adjacent to each other in parallel.

接着剤は、紫外線硬化型接着剤であることを特徴とする。   The adhesive is an ultraviolet curable adhesive.

また、本発明における光走査装置は、上記いずれかに記載の光学素子固定機構を備えることを特徴とする。   An optical scanning device according to the present invention includes any one of the optical element fixing mechanisms described above.

また、本発明における画像形成装置は、上記記載の光走査装置を備えることを特徴とする。   In addition, an image forming apparatus according to the present invention includes the above-described optical scanning device.

本発明により、接着座面の外周部に細隙溝を備えることによって接着剤の高さを一定に保ち、所望の接着面積を得ることが可能となるため、接着強さ不足による剥れの発生を防止することができる。   According to the present invention, by providing a slit groove on the outer peripheral portion of the adhesive seating surface, it becomes possible to keep the height of the adhesive constant and to obtain a desired adhesive area, and therefore the occurrence of peeling due to insufficient adhesive strength Can be prevented.

図１は、カラー画像形成装置の構成図である。図１は、潜像担持体としての４つのドラム状の感光体１０Ｙ、１０Ｃ、１０Ｍ、１０Ｋをタンデム配列したフルカラー画像形成装置である。   FIG. 1 is a configuration diagram of a color image forming apparatus. FIG. 1 shows a full-color image forming apparatus in which four drum-shaped photoconductors 10Y, 10C, 10M, and 10K as latent image carriers are arranged in tandem.

画像形成装置１は、感光体１０Ｙ、１０Ｃ、１０Ｍ、１０Ｋを有する作像装置７Ｙ、７Ｃ、７Ｍ、７Ｋと、中間転写ベルト１４と、支持ローラ１５ａ、１５ｂ、１５ｃと、一次転写ローラ１６と、クリーニング装置１７とを有して構成される。   The image forming apparatus 1 includes image forming devices 7Y, 7C, 7M, and 7K having photoreceptors 10Y, 10C, 10M, and 10K, an intermediate transfer belt 14, support rollers 15a, 15b, and 15c, a primary transfer roller 16, and And a cleaning device 17.

作像装置７Ｙ、７Ｃ、７Ｍ、７Ｋは順に、イエロー、シアン、マゼンタ、ブラックの各色に対応しており、図中下方から発する書込光Ｌにより感光体１０Ｙ、１０Ｃ、１０Ｍ、１０Ｋが露光され、対応する色の静電潜像が形成され、現像装置１２によりトナー像が形成される。   The image forming devices 7Y, 7C, 7M, and 7K sequentially correspond to yellow, cyan, magenta, and black colors, and the photoconductors 10Y, 10C, 10M, and 10K are exposed by the writing light L emitted from below in the drawing. The electrostatic latent image of the corresponding color is formed, and a toner image is formed by the developing device 12.

中間転写ベルト１４は、３つの支持ローラ１５ａ、１５ｂ、１５ｃなどに支持されて表面移動部材として無端移動する。中間転写ベルト１４の下側の張設ラインには、矢印で示す中間転写ベルト１４の移動方向順に上流側から、作像装置７Ｙ、７Ｃ、７Ｍ、７Ｋが間隔をおいて配置される。   The intermediate transfer belt 14 is supported by three support rollers 15a, 15b, 15c and the like and moves endlessly as a surface moving member. Image forming apparatuses 7Y, 7C, 7M, and 7K are arranged at intervals on the extending line below the intermediate transfer belt 14 from the upstream side in the moving direction of the intermediate transfer belt 14 indicated by an arrow.

一次転写ローラ１６は、中間転写ベルト１４を挟んで各感光体に対向して配置され、中間転写ベルト１４の移動とともに、中間転写ベルト１４上に順次トナー画像を重ね転写する。なお、中間転写ベルト１４上の一次転写ローラ１６が接している箇所は転写位置といい、転写位置にて転写が行なわれる。   The primary transfer roller 16 is disposed to face each photoconductor with the intermediate transfer belt 14 interposed therebetween, and sequentially transfers the toner image onto the intermediate transfer belt 14 as the intermediate transfer belt 14 moves. Note that a portion on the intermediate transfer belt 14 in contact with the primary transfer roller 16 is called a transfer position, and transfer is performed at the transfer position.

一次転写ローラを通過して転写された４つの重ね転写トナー像は、支持ローラ１５ａと二次転写ローラ９とのニップ部で最終記録媒体である記録材に一括転写される。   The four superimposed transfer toner images transferred through the primary transfer roller are collectively transferred to a recording material as a final recording medium at the nip portion between the support roller 15a and the secondary transfer roller 9.

転写された記録材は、定着装置６の定着対ローラ間を通過し、トナーを定着した後、搬送ローラを経て、排紙ローラ対より排紙トレイ１９上に排紙されることで、記録材上にフルカラー画像が得られる。   The transferred recording material passes between the fixing pair rollers of the fixing device 6, fixes the toner, passes through the conveying roller, and is discharged onto the discharge tray 19 from the discharge roller pair. A full color image is obtained on the top.

なお、中間転写ベルト１４は、黒画像１色形成モードに適合させるために、感光体１０Ｋについては一次転写ローラ１６により常時接触させる構成であり、他の感光体については、可動のテンションローラの機能により中間転写ベルト１４が接離する構成としている。   The intermediate transfer belt 14 is configured such that the photoconductor 10K is always in contact with the primary transfer roller 16 in order to adapt to the black image one-color formation mode, and the function of a movable tension roller is used for the other photoconductors. Thus, the intermediate transfer belt 14 is brought into contact with and separated from.

クリーニング装置１７は、ローラ１５ｂ部に対向して設けられ、中間転写ベルト１４上の残トナーの除去を行う。   The cleaning device 17 is provided to face the roller 15b, and removes residual toner on the intermediate transfer belt 14.

各作像装置７Ｙ、７Ｃ、７Ｍ、７Ｋは、それぞれ扱うトナーの色が異なるだけであり、機械的な構成及び作像プロセスは共通である。そのため、感光体以外の各構成部材は同一の符号を付し、任意の一つの作像装置、例えば作像装置７Ｙについて構成及び作像プロセスについて詳細に説明する。   The image forming devices 7Y, 7C, 7M, and 7K differ only in the color of the toner to be handled, and the mechanical configuration and the image forming process are common. Therefore, the constituent members other than the photosensitive member are denoted by the same reference numerals, and the configuration and image forming process of any one image forming device, for example, the image forming device 7Y will be described in detail.

作像装置７Ｙの感光体１０Ｙの周囲には、図中、時計回りの回転方向順に、帯電ローラ１１、現像装置１２、一次転写ローラ１６、クリーニング装置１３などが備えられる。   Around the photoreceptor 10Y of the image forming device 7Y, a charging roller 11, a developing device 12, a primary transfer roller 16, a cleaning device 13, and the like are provided in the clockwise rotation direction in the drawing.

感光体１０に静電潜像を形成する書込光Ｌは、光走査手段たる光走査装置４から出射されるもので、光走査装置４内部には、光源としての半導体レーザ、カップリングレンズ、ｆθレンズ、トロイダルレンズ、ミラー、回転多面鏡などが備えられる。各感光体に向けて出射される各色用の書込光Ｌは、感光体１０Ｙ上の書込位置に照射されて静電潜像が形成される。   The writing light L that forms an electrostatic latent image on the photoconductor 10 is emitted from the optical scanning device 4 that is an optical scanning means. Inside the optical scanning device 4, a semiconductor laser as a light source, a coupling lens, An fθ lens, a toroidal lens, a mirror, a rotating polygon mirror, and the like are provided. The writing light L for each color emitted toward each photoconductor is applied to the writing position on the photoconductor 10Y to form an electrostatic latent image.

作像装置７Ｙの現像装置１２には、イエローの現像剤が収納されており、潜像をイエロー画像で可視像化する。作像装置７Ｃ、７Ｍ、７Ｋについても、それぞれの色の現像剤が収納されており、各現像剤により潜像が可視像化される。   The developing device 12 of the image forming device 7Y contains a yellow developer, and visualizes the latent image with a yellow image. The image forming devices 7C, 7M, and 7K also store the respective color developers, and the latent images are visualized by the respective developers.

帯電ローラ１１は、感光体１０Ｙを一様に帯電させ、書込位置でイエロー画像の情報を含む書込光Ｌの照射を受けて静電潜像が形成される。該潜像が現像装置を通過する間にイエロートナーにより顕像化される。   The charging roller 11 uniformly charges the photosensitive member 10Y, and receives an irradiation of writing light L including yellow image information at a writing position to form an electrostatic latent image. The latent image is visualized by yellow toner while passing through the developing device.

感光体１０Ｙ上のイエロートナー像は、一次転写ローラ１６により中間転写ベルト１４に転写され、作像装置７Ｃでシアントナー画像、作像装置７Ｍでマゼンタトナー画像、作像装置７Ｂでブラックトナー画像と順次重ね転写されことにより、フルトナー画像が形成される。   The yellow toner image on the photoreceptor 10Y is transferred to the intermediate transfer belt 14 by the primary transfer roller 16, and the cyan toner image is formed by the image forming device 7C, the magenta toner image is formed by the image forming device 7M, and the black toner image is formed by the image forming device 7B. A full toner image is formed by sequentially superimposing and transferring.

給紙部５は、形成した重ねトナー像が二次転写ローラ９部に達すると同時に記録材が二次転写ローラ９部に至るようにレジストローラからタイミングを取って送り出し、一括転写が行われる。   The paper feeding unit 5 feeds the recording material from the registration roller at a timing so that the formed toner image reaches the secondary transfer roller 9 at the same time as the recording material reaches the secondary transfer roller 9, and batch transfer is performed.

クリーニング装置１３は、転写後の感光体に残った残留トナーの除去を行う。同様に、中間転写ベルト１４に残った残留トナーについても、クリーニング装置１７によって除去される。   The cleaning device 13 removes residual toner remaining on the photoconductor after transfer. Similarly, residual toner remaining on the intermediate transfer belt 14 is also removed by the cleaning device 17.

上記では、各感光体上のトナー画像を一旦中間転写ベルト１４上に重ね転写し、重ねトナー画像をシート状媒体に一括転写する方式について説明した。しかしながら、かかる中間転写ベルトに代えて表面移動部材たる記録紙搬送ベルトを設け、該記録紙搬送ベルトにより記録材を載せて搬送し、各感光体から順次カラートナー像を記録材上に重ね転写することにより、フルカラー画像を合成する方式のカラー画像形成装置も知られている。   In the above description, a method has been described in which the toner images on the respective photoreceptors are once transferred onto the intermediate transfer belt 14 and transferred onto the sheet-like medium at once. However, in place of the intermediate transfer belt, a recording paper conveyance belt as a surface moving member is provided, and a recording material is loaded and conveyed by the recording paper conveyance belt, and a color toner image is sequentially superimposed and transferred onto the recording material from each photoconductor. Accordingly, a color image forming apparatus that synthesizes a full-color image is also known.

次に、光走査装置について図２を参照して詳細に説明する。   Next, the optical scanning device will be described in detail with reference to FIG.

光走査装置は、光源１０１と、カップリングレンズ１０２と、アパーチャ１０３と、シリンドリカルレンズ１０４と、光偏向器１０５と、走査レンズ１０６と、を保持する第１筐体１１４と、導光用光学素子である折り曲げミラー１０７を保持する第２筐体１１５の２筐体から成る。   The optical scanning device includes a light source 101, a coupling lens 102, an aperture 103, a cylindrical lens 104, a light deflector 105, a first housing 114 that holds a scanning lens 106, and a light guide optical element. It consists of two housings of the 2nd housing | casing 115 holding the bending mirror 107 which is.

半導体レーザである光源１０１から放射された発散性の光束はカップリングレンズ１０２により以降の光学系にカップリングされる。ここでは簡単のため光源が単一の発光点をもつものとして述べているが、複数の発光点を持つ光源の場合でも同様である。   A divergent light beam emitted from a light source 101 that is a semiconductor laser is coupled to a subsequent optical system by a coupling lens 102. Here, for the sake of simplicity, the light source is described as having a single light emitting point, but the same applies to a light source having a plurality of light emitting points.

カップリングレンズ１０２を透過した光速は、アパーチャ１０３の開口部を通過する際、光束周辺部を遮断されてビーム整形され、線像結像光学系であるシリンドリカルレンズ１０４に入射する。シリンドリカルレンズ１０４は、パワーのない方向を主走査方向に向け、副走査方向には正のパワーを持ち、入射してくる光束を副走査方向に集束させ、光偏光器であるポリゴンミラー１０５の偏光反射面近傍に主走査方向に長い線像として集光させる。   When passing through the aperture of the aperture 103, the speed of light that has passed through the coupling lens 102 is blocked by the periphery of the light beam and shaped, and enters the cylindrical lens 104, which is a line image imaging optical system. The cylindrical lens 104 has a power-less direction in the main scanning direction and a positive power in the sub-scanning direction. The cylindrical lens 104 focuses the incident light beam in the sub-scanning direction, and the polarization of the polygon mirror 105 that is an optical polarizer. A line image that is long in the main scanning direction is condensed near the reflecting surface.

偏光反射面により反射された光束は、ポリゴンミラー１０５の等速回転に伴い、等角速度的に偏光しつつ、走査レンズ系をなす１枚の走査レンズ１０６を透過し、光速を被走査面に導光するための導光素子としての折り曲げミラー１０７により光路を折り曲げられ、被走査面の実態をなす光導電性の感光体上に光スポットとして集光し、被走査面を光走査する。   The light beam reflected by the polarization reflecting surface is polarized at a constant angular velocity as the polygon mirror 105 rotates at a constant speed, passes through one scanning lens 106 forming a scanning lens system, and guides the speed of light to the surface to be scanned. The optical path is bent by a bending mirror 107 as a light guide element for illuminating the light, and the light is condensed as a light spot on the photoconductive photosensitive member forming the actual state of the scanned surface, and the scanned surface is optically scanned.

このような光走査装置の調整時には、第１筐体１１４のみを用い、調整用光束１１６を測定することによって、カップリングレンズ１０２、シリンドリカルレンズ１０４及び走査レンズ１０６の主走査平面上の位置と姿勢を調整し、接着剤を用いて接着される。   During adjustment of such an optical scanning device, only the first housing 114 is used and the adjustment light beam 116 is measured to thereby determine the position and orientation of the coupling lens 102, the cylindrical lens 104, and the scanning lens 106 on the main scanning plane. Are adjusted and bonded using an adhesive.

以下、本発明の実施形態における光学素子の固定方法について詳細に説明する。なお、ここではシリンドリカルレンズの固定方法について説明するが、他の光学素子においても適用可能である。   The optical element fixing method in the embodiment of the present invention will be described in detail below. Although the cylindrical lens fixing method will be described here, it can also be applied to other optical elements.

図３は、第１筐体１１４の接着座面１２０の上面図である。第１筐体１１４に設けられた接着座面１２０は、長方形状であり、接着座面の上面は平面形状となっている。   FIG. 3 is a top view of the adhesive seating surface 120 of the first housing 114. The adhesive seating surface 120 provided in the first housing 114 has a rectangular shape, and the upper surface of the adhesive seating surface has a planar shape.

接着座面１２０の外周部には、ヘアーライン状の細い溝の細隙溝１３０が形成されており、細隙溝１３０は、接着座面１２０の稜線１２０ａに対して、平行に形成される。   A slit groove 130 in the form of a hairline-shaped thin groove is formed on the outer periphery of the bonding seat surface 120, and the slit groove 130 is formed in parallel to the ridge line 120 a of the bonding seat surface 120.

図４は、接着剤の濡れ広がり時における説明図である。図のように、第１筐体１１４に設けられた接着座面１２０に接着剤１２１を塗布すると、接着剤１２１は、接着座面１２０の４方向に有する稜線１２０ａの方向Ａ〜Ｄ（矢印）に濡れ広がり始める。   FIG. 4 is an explanatory diagram when the adhesive spreads. As shown in the figure, when the adhesive 121 is applied to the adhesive seating surface 120 provided in the first housing 114, the adhesive 121 is applied to the directions A to D (arrows) of the ridgeline 120a in the four directions of the adhesive seating surface 120. Begin to spread wet.

しかしながら、図５に示すように接着座面１２０の外周部には、接着剤１２１が濡れ広がろうとする方向Ｅに対して、垂直に細隙溝１３０が設けられているため、接着剤１２１の濡れ広がりの進行を遅らせ、接着剤１２１の液高さが低くならないように抑制することが可能となる。   However, as shown in FIG. 5, the outer peripheral portion of the adhesive seating surface 120 is provided with the slit groove 130 perpendicular to the direction E in which the adhesive 121 tries to wet and spread. It is possible to suppress the progress of the wetting and spreading so that the liquid height of the adhesive 121 does not decrease.

本実施形態のように細隙溝１３０で接着剤１２１の液面高さを維持することで、接着剤１２１とシリンドリカルレンズ１０４の接着面とが密接し、所望の接着面積１２３を得ることが可能となる。   By maintaining the liquid level of the adhesive 121 with the slit groove 130 as in the present embodiment, the adhesive 121 and the adhesive surface of the cylindrical lens 104 are in close contact with each other, and a desired adhesive area 123 can be obtained. It becomes.

なお、細隙溝１３０は、深さ０．３ｍｍで幅０．１ｍｍ程度で形成され、その細隙溝は、数十本あることが望ましい。また、接着剤１２１は、アクリル系の紫外線硬化型接着剤を用いると良い。   The slit groove 130 is formed with a depth of 0.3 mm and a width of about 0.1 mm, and it is desirable that there are several tens of slit grooves. The adhesive 121 may be an acrylic ultraviolet curable adhesive.

図６は、本発明の他の実施形態における第１筐体の接着座面における上面図である。   FIG. 6 is a top view of the adhesive seating surface of the first housing according to another embodiment of the present invention.

本実施形態においては、接着座面１２０の外周部には、接着剤１２０の濡れ広がりを抑制する粗隙溝１３１と細隙溝１３０を有する。   In the present embodiment, the outer periphery of the adhesive seating surface 120 has a rough gap groove 131 and a narrow gap groove 130 that suppress the wetting and spreading of the adhesive 120.

粗隙溝１３１は、接着座面１２０の稜線１２０ａに対して平行に隣接して備えられる細隙溝よりも大きな深さ、幅を有する溝であり、粗隙溝１３１に隣接するようにさらに細隙溝１３０が備えられる。   The rough gap groove 131 is a groove having a depth and width larger than that of the narrow groove provided adjacent to and parallel to the ridge line 120 a of the adhesive seating surface 120, and further narrower so as to be adjacent to the rough gap groove 131. A gap groove 130 is provided.

粗隙溝１３１は、細隙溝１３０よりも太い溝であり、粗隙溝１３１と細隙溝１３０は、共に接着座面１２０の稜線１２０ａに対して平行に形成される。   The rough groove 131 is thicker than the narrow groove 130, and both the rough groove 131 and the narrow groove 130 are formed parallel to the ridge line 120 a of the adhesive seating surface 120.

図７は、本実施形態における接着剤の濡れ広がり時における説明図である。図のように、第１筐体１１４に設けられた接着座面１２０に接着剤１２１を塗布すると、接着剤１２１は、接着座面１２０の４方向に有する稜線１２０ａの方向Ａ〜Ｄ（矢印）に濡れ広がり始める。   FIG. 7 is an explanatory view when the adhesive spreads in the present embodiment. As shown in the figure, when the adhesive 121 is applied to the adhesive seating surface 120 provided in the first housing 114, the adhesive 121 is applied to the directions A to D (arrows) of the ridgeline 120a in the four directions of the adhesive seating surface 120. Begin to spread wet.

接着剤１２１は、接着座面１２０の外周部に設けられた粗隙溝１３１により、濡れ広がりの進行が遅くなり始める。（Ｆ参照）   The adhesive 121 begins to slow down the progress of wetting and spreading due to the rough groove 131 provided on the outer peripheral portion of the adhesive seating surface 120. (See F)

さらに細隙溝１３０に到達すると、より濡れ広がりの進行が遅くなり（Ｇ参照）、粗隙溝１３１と細隙溝１３０によって、接着剤１２１の濡れ広がりの進行を制御できるようになり、接着剤１２１の液高さを任意の高さに抑制可能となる。   Further, when the slit groove 130 is reached, the progress of wetting and spreading becomes slower (see G), and the progress of the wetting and spreading of the adhesive 121 can be controlled by the rough groove 131 and the slit groove 130. The liquid height 121 can be suppressed to an arbitrary height.

本実施形態によれば、接着剤１２１の液高さを任意の高さに抑制可能になるため、被着材の接着面と密接させ、所望の接着面積１２３を得ることが可能となる。   According to this embodiment, since the liquid height of the adhesive 121 can be suppressed to an arbitrary height, it is possible to obtain a desired adhesion area 123 by bringing the adhesive 121 into close contact with the adhesion surface of the adherend.

本発明の実施形態によれば、紫外線硬化型接着剤の液面高さを制御することで、塗布〜調整前までの時間経過や温度変動による液面高さ変化を低減でき、所望する接着面積を得られることより、接着剤硬化後に強靭な接着強度が得られる。その結果、温度変動や衝撃・振動などの外乱影響に耐える接着強度を得ることができ、且つ、光学特性を安定させることができるため、高精度な光走査装置が提供できる。   According to the embodiment of the present invention, by controlling the liquid level height of the ultraviolet curable adhesive, it is possible to reduce the change in liquid level due to the time lapse from the application to the adjustment and the temperature fluctuation, and the desired adhesive area As a result, a strong adhesive strength can be obtained after the adhesive is cured. As a result, adhesive strength that can withstand disturbances such as temperature fluctuations, shocks and vibrations can be obtained, and optical characteristics can be stabilized, so that a highly accurate optical scanning device can be provided.

また、紫外線硬化型接着剤の液面高さを任意に制御できるため、接着剤の特性（粘度等）に適した液面高さを得ることが可能となる。さらに、塗布〜調整前までの時間経過や温度変動による液面高さ変化を低減でき、所望する接着面積を得られることより、接着剤硬化後に強靭な接着強度が得られる。その結果、温度変動や衝撃・振動などの外乱影響に耐える接着強度を得ることができ、且つ、光学特性を安定させることができるため、高精度な光走査装置が提供できる。   Further, since the liquid level height of the ultraviolet curable adhesive can be arbitrarily controlled, it is possible to obtain a liquid level suitable for the characteristics (viscosity, etc.) of the adhesive. Furthermore, the change in liquid level due to the passage of time from application to adjustment and temperature fluctuation can be reduced, and a desired adhesion area can be obtained, so that a strong adhesion strength can be obtained after the adhesive is cured. As a result, adhesive strength that can withstand disturbances such as temperature fluctuations, shocks and vibrations can be obtained, and optical characteristics can be stabilized, so that a highly accurate optical scanning device can be provided.

また、光学特性を安定させることができるため、高精度な光走査装置が提供でき、該光走査装置を搭載した画像形成装置により、高画質な画像を得ることができる。   In addition, since the optical characteristics can be stabilized, a highly accurate optical scanning device can be provided, and a high-quality image can be obtained by an image forming apparatus equipped with the optical scanning device.

以上、本発明の好適な実施の形態により本発明を説明した。ここでは特定の具体例を示して本発明を説明したが、特許請求の範囲に定義された本発明の広範囲な趣旨および範囲から逸脱することなく、これら具体例に様々な修正および変更が可能である。   The present invention has been described above by the preferred embodiments of the present invention. While the invention has been described with reference to specific embodiments thereof, various modifications and changes can be made to these embodiments without departing from the broader spirit and scope of the invention as defined in the claims. is there.

画像形成装置の構成図である。1 is a configuration diagram of an image forming apparatus. 光走査装置の構成図である。It is a block diagram of an optical scanning device. 本発明の実施形態に係る第１筐体の接着座面における上面図である。It is a top view in the adhesion seating surface of the 1st case concerning an embodiment of the present invention. 接着剤の濡れ広がり時における説明図である。It is explanatory drawing at the time of wet spread of an adhesive agent. 接着剤の濡れ広がり時における説明図である。It is explanatory drawing at the time of wet spread of an adhesive agent. 本発明の他の実施形態に係る第１筐体の接着座面における上面図である。It is a top view in the adhesion seating surface of the 1st case concerning other embodiments of the present invention. 接着剤の濡れ広がり時における説明図である。It is explanatory drawing at the time of wet spread of an adhesive agent. 従来の光学素子の接着時における問題点を示す図である。It is a figure which shows the problem at the time of adhesion | attachment of the conventional optical element.

符号の説明Explanation of symbols

１１４ 第１筐体
１２０ 接着座面
１２１ 接着剤
１３０ 細隙溝
１３１ 粗隙溝 114 First housing 120 Adhesive seating surface 121 Adhesive 130 Slot groove 131 Coarse gap groove

Claims (5)

接着剤を用いて光学素子を固定する座面の外周部に、前記座面の稜線に対して平行に前記座面に隣接して包囲する前記接着剤の濡れ広がりを抑制し、液面高さを制御する前記稜線に対して平行な複数のヘアーライン状で深さ０．３ｍｍ、幅０．１ｍｍ程度の細い溝が形成された細隙溝と、
前記稜線と前記細隙溝との間に前記細隙溝より大きな溝幅を有する前記稜線に対して平行な複数の粗隙溝と、
を備えることを特徴とする光学素子固定機構。 The liquid surface height suppresses the wetting spread of the adhesive surrounding and adjacent to the seat surface parallel to the ridge line of the seat surface on the outer peripheral portion of the seat surface that fixes the optical element using the adhesive. A slit groove in which a plurality of hairline shapes parallel to the ridge line controlling the depth is formed with a thin groove having a depth of about 0.3 mm and a width of about 0.1 mm ;
A plurality of rough gap grooves parallel to the ridge line having a groove width larger than the slit groove between the ridge line and the slit groove;
An optical element fixing mechanism comprising: 前記細隙溝は、少なくとも１０本以上が隣接して平行に形成されていることを特徴とする請求項１記載の光学素子固定機構。 The fine Sukimizo The optical element fixing mechanism according to claim 1, wherein that you have been formed in parallel and adjacent over at least ten are. 前記接着剤は、紫外線硬化型接着剤であることを特徴とする請求項１又は２記載の光学素子固定機構。 The adhesive, optical element fixing mechanism according to claim 1, wherein the der Rukoto ultraviolet curable adhesive. 請求項１から３のいずれか１項に記載の光学素子固定機構を備えることを特徴とする光走査装置。 Optical scanning apparatus according to claim Rukoto includes an optical element fixing mechanism according to any one of claims 1 to 3. 請求項４に記載の光走査装置を備えることを特徴とする画像形成装置。 An image forming apparatus comprising the optical scanning device according to claim 4 .
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