JP2012209623A - Image reader and image formation device including the same - Google Patents

Image reader and image formation device including the same Download PDF

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JP2012209623A
JP2012209623A JP2011071537A JP2011071537A JP2012209623A JP 2012209623 A JP2012209623 A JP 2012209623A JP 2011071537 A JP2011071537 A JP 2011071537A JP 2011071537 A JP2011071537 A JP 2011071537A JP 2012209623 A JP2012209623 A JP 2012209623A
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image
optical frame
dust
film
roller
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Katsuhiko Okamoto
克彦 岡本
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Kyocera Document Solutions Inc
京セラドキュメントソリューションズ株式会社
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Abstract

PROBLEM TO BE SOLVED: To provide an image reader capable of preventing intrusion of a foreign matter into an optical frame by a simple configuration without inviting cost increase.SOLUTION: In an image reader 50 formed by housing, inside an optical frame 51, illumination means for illuminating an original with light, an image forming lens for image-forming reflected light from the original and an imaging device for converting a latent image image-formed by the image forming lens to electric signals, dust-proof films 66 and 67 for closing a notch 63 and holes 64 and 65 formed on the optical frame 51 are stuck to the optical frame 51. Also, the dust-proof film 66 is stuck with a magic tape to a part of the optical frame 51 where the dust-proof film 67 is to be detached, and the dust-proof film 67 is stuck with a double-sided tape to a part of the optical frame 51 where the dust-proof film 67 is not to be detached.

Description

本発明は、原稿画像を光学的に読み取るための画像読取装置とこれを備えた画像形成装置に関するものである。 The present invention relates to an image reading apparatus and an image forming apparatus having the same for reading a document image optically.

電子写真方式によって用紙等の記録材に画像を形成する複写機やプリンター等の画像形成装置には原稿画像を光学的に読み取るための画像読取装置が備えられている。 An image reading apparatus for reading a document image optically is provided in the image forming apparatus such as a copying machine or a printer for forming an image on a recording material such as paper by an electrophotographic method. この画像読取装置は、原稿を光照明する照明手段と、原稿からの反射光を結像させる結像レンズと、前記結像レンズによって結像された潜像を電気信号に変換する撮像素子を光学フレーム内に収容して構成されている。 The image reading apparatus, an optical illuminating means for light illuminating the original, an imaging lens for focusing the reflected light from the document, the imaging device for converting an electric signal by latent image formed by the imaging lens and it is configured to accommodate in the frame.

ところで、画像読取装置の光学フレームには読取光学系の組み立てや調整のための切欠きや孔が形成されており、その外側に外装カバーが設けられている。 Incidentally, the optical frame of the image reading apparatus has notches or holes for the assembly and adjustment of the reading optical system is formed, the outer cover is provided on its outer side.

しかし、上記構成では、外装カバーと光学フレームの間の隙間と光学フレームに形成された切欠きや孔から光学フレーム内に異物が侵入し、この異物が光路を塞ぐことによって筋状の画像が発生する可能性がある。 However, in the above configuration, the foreign matter enters the optical frame from notches and holes formed in the gap and optical frame between the outer cover and the optical frame, streak-like image by the foreign matter blocks the optical path generated there's a possibility that. 一般的に通常の環境下での異物の大きさは0.3mm程度であると言われている。 The size of the generally foreign body under normal circumstances is said to be about 0.3 mm. このため、外装カバーと光学フレームの間の隙間が0.3mm以上であると、その隙間から異物が侵入し、この異物が光学フレームの切欠きや孔から光学フレーム内に侵入するために筋状の画像が発生する可能性がある。 Therefore, when the gap between the outer cover and the optical frame is 0.3mm or more, streaky for foreign matter entering from the gap, entering the foreign matter from the notch or hole of the optical frame into the optical frame there is a possibility that the image is generated.

そこで、特許文献1には、ミラー取付部の隙間をポリエステルシートによって密閉する構成が提案されている。 Therefore, Patent Document 1 a gap mirror mounting portion is proposed a configuration for sealing the polyester sheet.

又、特許文献2には、シートガイドにスリットを有する原稿搬送装置と読取ユニットの間にシャッターを設け、このシャッターを読取ユニットの移動に連動して開閉させる構成が提案されている。 Further, Patent Document 2, the shutter between the document feeder and the reading unit having a slit is provided in the sheet guide, configured to open and close has been proposed in conjunction with the movement of the unit reading the shutter.

特開平5−136939号公報 JP-5-136939 discloses 特開2006−140577号公報 JP 2006-140577 JP

しかしながら、特許文献1において提案された構成では、光学フレーム内への異物の侵入を防ぐ防塵対策が施されていないため、光学フレーム内に異物が侵入するという問題がある。 However, in the proposed configuration in Patent Document 1, since the dustproof to prevent foreign material from entering the optical frame is not performed, there is a problem that foreign matter enters into the optical frame. 又、異物は粉塵であるため、ポリエステルシートをミラー取付部のリブに貼り付けても、異物がミラーに付着する可能性がある。 Further, foreign matter is because it is dust, be attached to the polyester sheet to the rib of the mirror mounting portion, there is a possibility that foreign matter adheres to the mirror.

又、特許文献2において提案された構成では、シャッターを開閉させる機構が必要であるためにコストアップを免れず、原稿載置用コンタクトガラスの付近には異物侵入防止構造が設けられていないため、隙間から光学フレーム内に異物が侵入する可能性がある。 Furthermore, since patent in the proposed configuration in the literature 2, the mechanism for opening and closing the shutter without spared costs because it is necessary, the foreign matter intrusion preventing structure in the vicinity of the document mounting glass platen is not provided, there is a possibility that foreign matter enters into the optical frame from the gap.

本発明は上記問題に鑑みてなされたもので、その目的とする処は、コストアップを招くことなく、簡単な構成で光学フレーム内への異物の侵入を防ぐことができる画像読取装置及びこれを備えた画像形成装置を提供することにある。 The present invention has been made in view of the above problems, treatment is an object of the present invention, without increasing the cost, the image reading device and it can prevent foreign material from entering the optical frame with a simple structure It is to provide an image forming apparatus equipped.

上記目的を達成するため、請求項1記載の発明は、原稿を光照明する照明手段と、原稿からの反射光を結像させる結像レンズと、前記結像レンズによって結像された潜像を電気信号に変換する撮像素子を光学フレーム内に収容して成る画像読取装置において、前記光学フレームに形成された切欠きや孔を塞ぐ防塵フィルムを前記光学フレームに貼付したことを特徴とする。 To achieve the above object, an invention according to claim 1, wherein an illumination means for light illuminating the original, an imaging lens for focusing the reflected light from the document, a latent image is imaged by the imaging lens in the image reading device formed by accommodating an imaging device that converts an electrical signal into the optical frame, characterized in that a dustproof film for closing the notch or hole formed in the optical frame was attached to the optical frame.

請求項2記載の発明は、請求項1記載の発明において、前記防塵フィルムを取り外しする前記光学フレームの箇所には前記防塵フィルムを取り外し可能なテープによって貼付し、防塵フィルムを取り外ししない前記光学フレームの箇所には前記防塵フィルムを両面テープによって貼付したことを特徴とする。 According to a second aspect of the present invention, in the first aspect, the portion of the optical frames for detaching said dust-proof film is stuck by the possibility tape Remove the dustproof film, the optical frame not remove the dust film the location is characterized in that attached by a double-sided tape the dustproof film.

請求項3記載の発明は、請求項1記載の発明において、前記防塵フィルムを取り外しする前記光学フレームの箇所には前記防塵フィルムをマジックテープ(登録商標)によって貼付し、防塵フィルムを取り外ししない前記光学フレームの箇所には前記防塵フィルムを両面テープによって貼付したことを特徴とする。 According to a third aspect of the invention, in the invention according to the first aspect, the portion of the optical frames for detaching said dust-proof film attached to the dust-proof film by Velcro (registered trademark), the optics do not remove the dust film the position of the frame is characterized in that attached by a double-sided tape the dustproof film.

請求項4記載の画像形成装置は、請求項1〜3の何れかに記載の画像読取装置を備えることを特徴とする。 The image forming apparatus according to claim 4 is characterized in that it comprises an image reading apparatus according to any one of claims 1 to 3.

請求項1記載の発明によれば、光学フレームに形成された切欠きや孔が光学フレームに貼付された防塵フィルムによって塞がれるため、これらの切欠きや孔から光学フレーム内への異物の侵入が確実に防がれる。 According to the first aspect of the invention, since the notches or holes formed in the optical frame is closed by the dust-proof film which is attached to the optical frame, entry of foreign matter from these notches and holes into the optical frame It is reliably prevented. そして、このような効果は単に防塵フィルムを光学フレームに貼付するだけの簡単な構成によって得られるため、コストアップを招くことがない。 Since obtained by a simple configuration of simply sticking this effect simply dustproof film optical frame, never increase in cost.

請求項2記載の発明によれば、防塵フィルムを取り外しする光学フレームの箇所には前記防塵フィルムを取り外し可能なマジックテープ(登録商標)等によって貼付するため、製造ラインや市場で読取光学部品を交換した後に組み立てや調整のために光学フレームに形成された切欠きや孔を再び使用するときには、マジックテープ(登録商標)等で貼付された防塵フィルムを光学フレームから簡単に剥がすことができ、組み立てや調整が済んだ後にはマジックテープ(登録商標)等によって防塵フィルムを光学フレームに再び簡単に貼付して切欠きや孔を塞ぐことができる。 According to the second aspect of the present invention, since the portion of the optical frames for detaching the dust film stuck by the dustproof film removable Velcro (registered trademark) or the like, replace the optics reading the production line and market when using a notch or hole formed in the optical frame for assembly or adjustment after again, it can be peeled off the dustproof film affixed with Velcro (registered trademark) easily from the optical frame, assembled Ya adjustment after the after completion can close the Velcro (TM) notches or holes are stuck again easy dustproof film to the optical frame by like. 又、読取光学部品の組み立てや調整の際に再び使用されない切欠きや孔が形成された光学フレームの箇所は防塵フィルムを剥がす必要がないため、この防塵フィルムを両面テープによって光学フレームに簡単に貼り付けることができる。 Further, the reading order is not necessary to peel off again part of the optical frame notches and holes that are not used are formed dustproof film when optical components of the assembly and adjustment, stick easily into optical frame this dustproof film by a double-sided tape it can be attached.

請求項3記載の発明によれば、画像読取装置の光学フレーム内への異物に侵入が防がれるため、異物が光路を塞ぐことによる筋状の画像の発生が防がれ、高質画像を安定的に得ることができる。 According to the third aspect of the present invention, since entering the foreign matter into the optical frame of the image reading apparatus is prevented, occurrence of streak-like image due to the foreign matter blocks the light path is prevented, the Koshitsu image it is possible to stably obtain.

本発明に係る画像形成装置(複合機)の縦断面図である。 It is a longitudinal sectional view of an image forming apparatus (MFP) according to the present invention. 本発明に係る画像読取装置の副走査方向断面図である。 It is a sub-scanning direction cross-sectional view of the image reading apparatus according to the present invention. 本発明に係る画像読取装置の光学フレームに斜視図である。 It is a perspective view of an optical frame of the image reading apparatus according to the present invention. 図3のA部拡大詳細図である。 An A-part enlarged detail of FIG. 3. 図3のA部の防塵フィルム貼付前の状態を示す斜視図である。 It is a perspective view showing a dust-proof film sticking state before the part A of FIG.

以下に本発明の実施の形態を添付図面に基づいて説明する。 It is described with reference to embodiments of the present invention in the accompanying drawings.

[画像形成装置] [Image forming apparatus]
図1は本発明に係る画像形成装置の縦断面図であり、図示の画像形成装置は、複写機能とプリンター機能及びファクシミリ機能を兼備したカラー複合機であって、用紙の両面にカラー画像を形成することができる装置である。 Figure 1 is a longitudinal sectional view of an image forming apparatus according to the present invention, the image forming apparatus shown is a color MFP having both copying function and a printer function and a facsimile function, forming a color image on both sides of the paper it is a device capable of. このカラー複合機は、装置本体100とその上部に配された自動原稿搬送装置40及び原稿読取装置50を備えており、装置本体100の内部上方には画像形成部1が配置されている。 The color MFP is provided with an automatic document feeder 40 and a document reading device 50 that is disposed between the apparatus main body 100 thereon, the image forming unit 1 to an upper portion of the apparatus main body 100 is disposed. 又、装置本体100内の下半部には用紙収納部70が配され、装置本体100内の画像形成部1と用紙収納部70の間には転写搬送ユニット80と両面搬送ユニット90が配されている。 Further, in the lower half of the apparatus main body 100 is arranged, the sheet storage section 70, a transfer conveyance unit 80 and the double-sided transport unit 90 is disposed between the image forming unit 1 and the sheet storing section 70 in the apparatus main body 100 ing.

前記画像形成部1は、電子写真方式によって画像を形成するものであって、タンデムに配置されたマゼンタ画像形成ユニット1M、シアン画像形成ユニット1C、イエロー画像形成ユニット1Y及びブラック画像形成ユニット1Kを備えている。 The image forming unit 1 is for forming an image by an electrophotographic method, comprising the magenta image forming unit 1M arranged in tandem, the cyan image forming unit 1C, a yellow image forming unit 1Y and a black image forming unit 1K ing.

上記各画像形成ユニット1M,1C,1Y,1Kには、像担持体である感光ドラム2a,2b,2c,2dがそれぞれ配置されており、各感光ドラム2a〜2dの周囲には、露光装置3a,3b,3c,3d、帯電器4a,4b,4c,4d、現像装置5a,5b,5c,5d、一次転写ローラー6a,6b,6c,5d及びクリーニング装置7a,7b,7c,7dがそれぞれ配置されている。 It said image forming units 1M, 1C, 1Y, and 1K includes a photosensitive drum 2a which is an image bearing member, 2b, 2c, 2d are arranged, around each photosensitive drum 2a~2d, the exposure apparatus 3a , 3b, 3c, 3d, chargers 4a, 4b, 4c, 4d, a developing device 5a, 5b, 5c, 5d, the primary transfer roller 6a, 6b, 6c, 5d and a cleaning device 7a, 7b, 7c, 7d are arranged It is.

ここで、前記感光ドラム2a〜2dは、ドラム状の感光体であって、不図示の駆動モーターによって図示矢印方向(反時計方向)に所定のプロセススピードで回転駆動される。 Here, the photosensitive drum 2a~2d is a drum-shaped photoreceptor is rotated at a predetermined process speed in the direction indicated by an arrow (counterclockwise direction) by a drive motor not shown. 又、前記露光装置3a〜3dは各色の画像信号に対応するレーザー光を各感光ドラム2a〜2dに向けて照射することによって各感光ドラム2a〜2d上に静電潜像を形成するものであり、前記帯電器4a〜4dは、不図示の帯電バイアス電源から印加される帯電バイアスによって感光ドラム2a〜2dの表面を所定の電位に均一に帯電させるものである。 Further, the exposure apparatus 3a~3d is to form an electrostatic latent image on the photosensitive drum 2a~2d by irradiating toward the laser light corresponding to each color image signals of the respective photosensitive drums 2a~2d the charger 4a~4d is for uniformly charging the surface of the predetermined potential of the photosensitive drum 2a~2d by a charging bias applied from a charging bias power source (not shown).

更に、前記現像装置5a〜5dは、マゼンタ(M)トナー、シアン(C)トナー、イエロー(Y)トナー、ブラック(K)トナーをそれぞれ収容しており、各感光ドラム2a〜2d上に形成された各静電潜像に各色のトナーを付着させて各静電潜像を各色のトナー像として可視像化するものである。 Further, the developing device 5a~5d are magenta (M) toner, and cyan (C) toner, yellow (Y) toner, black (K) toner is accommodated, respectively, formed on the respective photosensitive drums 2a~2d in which a visible image of each electrostatic latent image deposited so the toners of the respective colors in each of the electrostatic latent image as a toner image of each color was.

又、前記一次転写ローラー6a〜6dは、各一次転写部にて無端状の中間転写ベルト8を介して各感光ドラム2a〜2dに当接可能に配置されている。 Further, the primary transfer roller 6a~6d is contactable disposed respective photosensitive drums 2a~2d through the endless intermediate transfer belt 8 at the primary transfer portion. ここで、中間転写ベルト8は、二次転写対向ローラー9と駆動ローラー10及び複数のテンションローラー11,12,13との間に張設されて各感光ドラム2a〜2dの下面側に図示矢印方向(時計方向)に走行可能に配置されており、前記二次転写対向ローラー9は、二次転写部において中間転写ベルト8を介して二次転写ローラー14に当接可能に配置されている。 Here, the intermediate transfer belt 8, the secondary transfer opposing roller 9 and stretched has been a direction indicated by an arrow on the lower surface side of the photosensitive drum 2a~2d between the drive roller 10 and a plurality of tension rollers 11, 12, 13 being drivable disposed (clockwise direction), the secondary transfer counter roller 9 is contactable arranged to the secondary transfer roller 14 via the intermediate transfer belt 8 at the secondary transfer portion.

前記用紙収納部70は、複数枚の用紙が積層収容された着脱可能な3つの給紙カセット71,72,73を備えており、各給紙カセット71〜73の近傍には、各給紙カセット71〜73内の用紙を上位のものから順次取り出すピックローラー15と、取り出された用紙を1枚ずつ分離して送り出すフィードローラー16とリタードローラー17がそれぞれ配設されている。 The sheet storing section 70 is provided with a plurality of sheets detachable three sheet feeding cassettes stacked housed 71, 72, 73, in the vicinity of each of the paper feeding cassettes 71 to 73, each of the paper feeding cassettes sequentially retrieving pickup roller 15 to the paper in 71 to 73 from the upper one, the feed roller 16 and the retard roller 17 for feeding by separating one by one the retrieved paper are disposed respectively. 又、バイパストレイ74の近傍には、バイパス搬送手段としてのピックローラー15、フィードローラー16、リタードローラー17及び搬送ローラー18が設けられている。 Further, in the vicinity of the bypass tray 74, pick roller 15 as a bypass conveying means, a feed roller 16, retard roller 17 and the conveying rollers 18 are provided. 尚、図1において19は搬送ローラーである。 Incidentally, 19 in FIG. 1 is a conveying roller.

前記転写搬送ユニット80は、用紙収納部70から送り出された用紙を適当なタイミングで画像形成部1へと搬送するとともに、画像形成部1において画像が形成された用紙を不図示の排紙トレイへと排出するものであって、用紙収納部70から二次転写部(二次転写対向ローラー9と二次転写ローラー14の当接部)に至る第1搬送経路L1に配置されたレジストローラー20、前記二次転写ローラー14、二次転写部から排紙手段としての後述の排紙ローラー24に至る第2搬送経路L2に設けられた搬送ベルト21、定着装置22と搬送ローラー23及び排紙ローラー24ーを備えている。 The transfer conveyance unit 80, conveys the sheet fed from the sheet storing section 70 to the image forming section 1 at an appropriate timing, a sheet in the image forming section 1 image has been formed to the discharge tray (not shown) been made to discharge the resist roller 20 disposed in the first conveyance path L1 extending from the sheet storage section 70 to the secondary transfer portion (abutment portion of the secondary transfer opposing roller 9 and the secondary transfer roller 14), the secondary transfer roller 14, secondary transfer described later as the paper discharge means from the unit discharge transport belt 21 provided in the second transport path L2 leading to the rollers 24, conveying the fixing device 22 roller 23 and the paper discharge roller 24 It has an over. ここて、定着装置22は、圧接状態で互いに回転する定着ローラー22aと加圧ローラー22bを備えている。 Te Here, the fixing device 22 includes a fixing roller 22a and pressure roller 22b which rotates together with the pressed state.

又、転写搬送ユニット80は、画像形成装置本体100に対して着脱可能であって、前記転写搬送ユニット80には、第2搬送経路L2から分岐して両面搬送ユニット90の反転ローラー25と反転コロ26に至る横U字状の第3搬送経路L3が設けられており、その途中には搬送ローラー27が設けられている。 Further, the transfer conveyance unit 80 is detachable to the image forming apparatus main body 100, the transfer conveyance unit 80 is branched from the second transport path L2 and reverse roller 25 of the duplex conveyance unit 90 reversing roller and horizontal U-shaped third conveyance path L3 is provided leading to 26, the transport roller 27 is provided in the middle thereof. 又、転写搬送ユニット80には前記第3搬送経路L3とは別に反転搬送経路L3'が第2搬送経路L2から分岐して下方に延びており、その途中には搬送ローラー28が設けられている。 Further, the transfer conveyance unit 80 extends downward separately from the reverse conveyance path L3 'and the third conveyance path L3 branches from the second conveyance path L2, the conveying roller 28 provided on its way . そして、第2搬送経路L2と第3搬送経路L3との分岐部には、用紙の搬送方向を切り換えるためのフラッパ29が回動可能に設けられている。 Then, the second conveyance path L2 in the branch portion between the third conveyance path L3, the flapper 29 for switching the conveying direction of the sheet is provided rotatably.

前記両面搬送ユニット90は、画像形成部1において画像が形成された用紙の表裏を反転させるものであって、前記第3搬送経路L3と反転搬送経路L3に連なる中間トレイ30とその下方に配された第4搬送経路L4を備えており、中間トレイ30には、正逆転可能な前記反転ローラー25と、前記反転ローラー25に対して圧接/離間する前記反転コロ26が設けられている。 The duplex conveyance unit 90, there is to reverse the front and back of the sheet on which the image is formed by the image forming section 1, it is arranged with its lower intermediate tray 30 connected to the reverse conveyance path L3 and the third conveyance path L3 and it includes a fourth conveying path L4, to the intermediate tray 30, and a reversible the reverse roller 25, the reversing roller 26 for pressing / spacing is provided for the reverse roller 25.

又、両面搬送ユニット90には大径の再給紙ローラー32が回転可能に設けられており、この再給紙ローラー32の外周には小径のローラー33,34が回転可能に当接している。 Also, the duplex conveying unit 90 has a large diameter of the re-feed roller 32 is rotatably provided, small-diameter rollers 33, 34 is in contact rotatably those on the outer periphery of the sheet re-feeding roller 32. 尚、再給紙ローラー32には不図示の一方向クラッチが設けられている。 Incidentally, the re-feeding roller 32 is provided with one-way clutch (not shown). そして、反転手段を構成する前記反転ローラー25と反転コロ26からは第1搬送経路L4が延びており、この第4搬送経路L4は前記第1搬送経路L1に合流している。 Then, with the reverse roller 25 constituting the inverting means is the inverting roller 26 extends the first transport path L4, the fourth conveying path L4 is joined to the first conveyance path L1.

上記第4搬送経路L4には、搬送ローラー35が用紙搬送方向に沿って複数設けられている。 Above the fourth conveying path L4, the transport roller 35 is provided with a plurality along the sheet conveyance direction. 又、再給紙ローラー32の近傍には、中間トレイ30に一旦引き込まれた用紙の搬送方向を切り換えるためのフラッパ36が回動可能に設けられている。 Further, in the vicinity of the re-feed rollers 32, the flapper 36 for switching the conveying direction of the temporarily retracted paper in the intermediate tray 30 is rotatably provided. 尚、本実施の形態では、両面搬送ユニット90の第4搬送経路L4には、2枚以上の用紙を保留可能な2つ以上の用紙保留位置が備えられている。 In the present embodiment, the fourth conveyance path L4 of the duplex conveyance unit 90, pending possible two or more sheet retaining position two or more sheets are provided.

次に、以上の構成を有するカラー複合機の画像形成動作について説明する。 The following describes the image forming operation of the color MFP having the above configuration.

例えば、自動原稿搬送装置40の原稿トレイ41にセットされた図2に示す原稿が原稿読取部であるコンタクトガラス50a(図2参照)上に自動的に搬送され、その原稿Gの画像が原稿読取装置50によって光学的に読み取られる。 For example, is automatically conveyed onto the contact glass 50a document shown in FIG. 2, which is set on the document tray 41 of the automatic document feeder 40 is a document reading unit (see FIG. 2), the image of the document G is read document optically read by the device 50.

上述のように原稿の画像が画像読取装置50によって光学的に読み取られると、画像形成部1においては、各画像形成ユニット1M,1C,1Y,1Kにおいて各感光ドラム2a〜2dが図示矢印方向(反時計方向)に所定のプロセススピードで回転駆動され、これらの感光ドラム2a〜2dは、帯電器4a〜4dによって一様に帯電される。 When the image of the document as described above is optically read by the image reading apparatus 50, in the image forming unit 1, the image forming units 1M, 1C, 1Y, the photosensitive drums 2a~2d in 1K is a direction indicated by an arrow ( counterclockwise) is rotated at a predetermined process speed, these photosensitive drums 2a~2d is uniformly charged by the charger 4 a to 4 d. 又、露光装置3a〜3dは、原稿読取装置60によって読み取られた画像の各色毎の信号によって変調されたレーザー光を出射し、そのレーザー光を各感光ドラム2a〜2dの表面に照射し、各感光ドラム2a〜2d上に各色のカラー画像信号に対応した静電潜像をそれぞれ形成する。 Further, the exposure apparatus 3a~3d may emits laser light modulated by a signal of each color of the read image by the document reading unit 60 irradiates the laser beam on the surface of the photosensitive drum 2 a to 2 d, each an electrostatic latent image corresponding to each color image signal on the photosensitive drum 2a~2d form respectively.

そして、先ず、マゼンタ画像形成ユニット1Mの感光ドラム2a上に形成された静電潜像に、前記感光ドラム2aの帯電極性と同極性の現像バイアスが印加された現像装置5aによってマゼンタトナーを付着させ、前記静電潜像をマゼンタトナー像として可視像化する。 Then, first, the electrostatic latent image formed on the photosensitive drum 2a of the magenta image forming unit 1M, depositing the magenta toner by the charging polarity and the developing device 5a to the same polarity of the developing bias is applied to the photosensitive drum 2a , a visible image of the electrostatic latent image as a magenta toner image. このマゼンタトナー像は、感光ドラム2aと一次転写ローラー6aとの間の一次転写部(転写ニップ部)において、トナーと逆極性の一次転写バイアスが印加された一次転写ローラー6aの作用によって、図示矢印方向に回転駆動されている中間転写ベルト8上に一次転写される。 The magenta toner image, by the primary transfer unit in (transfer nip portion), the action of the primary transfer roller 6a of the primary transfer bias having a polarity opposite to that of toner is applied between the photosensitive drum 2a and the primary transfer roller 6a, arrow It is primarily transferred onto the intermediate transfer belt 8 that is driven to rotate in the direction.

上述のようにしてマゼンタトナー像が一次転写された中間転写ベルト8は、次のシアン画像形成ユニット1Cへと移動する。 The intermediate transfer belt 8 to the magenta toner image is primarily transferred as described above is moved to the next cyan image forming unit 1C. そして、シアン画像形成ユニット1Cにおいても、前記と同様にして、感光ドラム2b上に形成されたシアントナー像が一次転写部において中間転写ベルト8上のマゼンタトナー像に重ねて転写される。 Also in the cyan image forming unit 1C, the same manner as described above, cyan toner image formed on the photosensitive drum 2b is transferred superimposed on the magenta toner image on the intermediate transfer belt 8 at the primary transfer portion.

以下同様にして、中間転写ベルト8上に重畳転写されたマゼンタ及びシアントナー像の上に、イエロー及びブラック画像形成ユニット1Y,1Kの各感光ドラム2c,2d上にそれぞれ形成されたイエロー及びブラックトナー像が各一次転写部において順次重ね合わせられ、中間転写ベルト8上にはフルカラーのトナー像が形成される。 In the same manner, the intermediate transfer onto the belt magenta and cyan toner images are superimposed and transferred onto the 8, yellow and black image forming units 1Y, the photosensitive drum 2c of 1K, yellow and black toner respectively formed on 2d image is sequentially superimposed at the primary transfer portion, onto the intermediate transfer belt 8 is a full-color toner image is formed. 尚、中間転写ベルト8上に転写されないで各感光ドラム2a〜2d上に残留する転写残トナーは、各クリーニング装置7a〜7dによって除去され、各感光ドラム2a〜2dは次の画像形成に備えられる。 The transfer residual toner remaining on the photosensitive drums 2a~2d without being transferred onto the intermediate transfer belt 8 is removed by the cleaning devices 7a to 7d, the photosensitive drums 2a~2d is prepared for the next image formation .

他方、用紙収納部70の例えば給紙カセット72内に収容された用紙は、ピックローラー15によって最上位のものから1枚ずつピックアップされ、フィードローラー16とリタードローラー17によって1枚ずつ分離されて搬送ローラー19によって第1搬送経路路L1をレジストローラー20へと搬送される。 On the other hand, the paper sheet is accommodated in the paper feed cassette 72 for example of sheet storing section 70, are picked up one by one from the uppermost by the pick roller 15, are separated one by one by the feed roller 16 and the retard roller 17 transporting It is conveyed through first conveyance path path L1 by the roller 19 to the registration roller 20. そして、レジストローラー20においては、用紙は、一時待機状態とされた後、中間転写ベルト8上のトナー像に同期する所定のタイミングで二次転写対向ローラー9と二次転写ローラー14との当接部である二次転写部へと供給される。 Then, the resist roller 20, the sheet, after being a temporary standby state, contact of the secondary transfer counter roller 9 at a predetermined timing in synchronism with the toner image on the intermediate transfer belt 8 and the secondary transfer roller 14 a part supplied to the secondary transfer portion.

二次転写部においては、転写ベルト8上に担持されたフルカラーのトナー像が二次転写ローラー14の作用によって用紙の表面(第1面)上に一括転写される。 In the secondary transfer portion, is collectively transferred onto the surface (first surface) of the sheet by the action of a full-color toner image carried on the transfer belt 8 is secondary transfer roller 14. そして、トナー像が転写された用紙は、搬送ベルト21によって定着装置22へと搬送され、この定着装置22の定着ローラー22aと加圧ローラー22b間の定着ニップを通過する過程で加熱及び加圧されてトナー像の定着を受ける。 The sheet on which the toner image has been transferred is conveyed to the fixing device 22 by the conveyor belt 21, the heating and pressurized while passing through the fixing nip between the fixing roller 22a and pressure roller 22b of the fixing device 22 receive the fixing of the toner image Te.

而して、定着装置22にて表面にトナー像が定着された用紙は、フェースアップ排紙(FU排紙)が選択されている場合には、フラッパ29によってその搬送方向が決定され、用紙は第2搬送経路L2をそのまま排紙ローラー24に向かって搬送され、排紙ローラー24によって画像面を上にして不図示の排紙トレイへと排出される。 And Thus, the sheet on which the toner image is fixed on the surface by a fixing device 22, when the face-up discharge (FU sheet discharge) is selected, the conveying direction is determined by a flapper 29, the sheet it is conveyed toward the second conveying path L2 to the discharge roller 24 as it is discharged to the discharge tray (not shown) in the top image plane by the discharge rollers 24.

一方、フェースダウン排紙(FD排紙)又は両面画像モードが選択された場合には、フラッパ29が動作して用紙の搬送方向が切り換えられ、定着装置22を通過した用紙は横U字状の第3搬送経路L3を通って両面搬送ユニット90へと搬送される。 On the other hand, if the face-down discharge (FD sheet discharge) or duplex image mode is selected, the flapper 29 is operated transport direction is switched the paper, the paper passing through the fixing device 22, the horizontal U-shaped and it is conveyed to the duplex conveyance unit 90 through the third conveyance path L3.

両面搬送ユニット90においては、反転コロ26は反転ローラー25から離間した状態で待機しており、用紙が両面搬送ユニット90に或る一定以上送られると、反転コロ26は反転ローラー25に圧接される。 In the duplex conveyance unit 90, the inverting roller 26 is on standby in a state of being separated from the reverse roller 25, the sheet is fed a certain or more duplex conveyance unit 90, the inverting roller 26 is pressed against the reverse roller 25 . このように反転コロ26が反転ローラー25に圧接されると、反転ローラー25が正転されて用紙が送られてきた方向に引き込まれ、用紙が或る一定以上引き込まれると反転ローラー25が逆転されて用紙がスイッチバックされて反転搬送経路L3'又は第4搬送経路L4へと送られる。 With such reversing roller 26 is pressed against the reverse roller 25, reverse roller 25 is pulled in the direction is forward paper sent, reverse roller 25 and the paper is pulled certain higher is reversed paper is fed to the reverse conveyance path L3 'or the fourth conveying path L4 is switched back Te. 即ち、フェースダウン排紙が選択されている場合には、フラッパ36によって用紙の搬送方向が反転搬送経路L3'へと切り換えられ、用紙は画像面を下にした状態で排紙ローラー24によって不図示の排紙トレイへと排出される。 That is, when the face-down paper ejection is selected, the conveying direction of the sheet is switched to the reverse conveyance path L3 'by a flapper 36, the paper is not shown by the discharge roller 24 in a state where the image side down It is discharged to the discharge tray.

又、用紙の両面に画像を形成する場合には、フラッパ36によって用紙の搬送方向が第4面搬送経路L4の方向に切り換えられ、用紙は、再給紙ローラー32と搬送ローラー35によって第4搬送経路L4を画像面を上にして搬送され、第4搬送経路L4から第1搬送経路L1へと受け渡されることによって表裏が反転されて画像面を下にした状態でレジストローラー20へと送られる。 Further, in the case of forming images on both sides of the sheet, the conveying direction of the sheet by the flapper 36 is switched to the direction of the fourth surface conveyance path L4, paper, fourth transfer sheet re-feeding roller 32 and the transport roller 35 the path L4 is conveyed upward an image plane, is sent to the registration rollers 20 in a state where the front and back is down is reversed image plane by being passed from the fourth transport path L4 to the first conveyance path L1 . そして、以後は前述と同様のプロセスを経て用紙の反対面(第2面)にトナー像が形成され、このトナー像が形成された用紙は、定着装置22によってトナー像の定着を受けた後に排紙ローラー対24によって不図示の排紙トレイへと排出され、前記用紙の両面に画像が形成される。 And, thereafter the toner image is formed on the opposite surface of the sheet through the same process as described above (second surface), the sheet on which the toner image is formed, discharge by the fixing device 22 after receiving a fixing of the toner image is discharged to the discharge tray (not shown) by the paper roller pair 24, an image is formed on both surfaces of the paper.

尚、以上はカセット給紙を行う場合について説明したが、手差し給紙を行う場合には、バイパストレイ74上にセットされた用紙は、ピックローラー15によって最上位のものから1枚ずつピックアップされ、フィードローラー16とリタードローラー17によって1枚ずつ分離されて搬送ローラー18によって第1搬送経路L1をレジストローラー20へと搬送され、以後は前記と同様のプロセスを経て前記用紙に画像が形成される。 The above has been described for the case of performing the cassette feeding, in the case of manual paper feeding, the paper set on the bypass tray 74 is picked up one by one from the uppermost by the pick roller 15, is conveyed first conveyance path L1 by the transport roller 18 are separated one by one by the feed roller 16 and the retard roller 17 to the registration roller 20, thereafter an image is formed on the sheet through the same process as the.
[画像読取装置] Image reading apparatus]
次に、本発明に係る前記画像読取装置50の構成を図2〜図5に基づいて説明する。 Next, a description will be given of a configuration of the image reading apparatus 50 according to the present invention in Figures 2-5.

図2は本発明に係る画像読取装置の副走査方向断面図、図3は同画像読取装置の光学フレームに斜視図、図4は図3のA部拡大詳細図、図5は図3のA部の防塵フィルム貼付前の状態を示す斜視図である。 Figure 2 is a sub-scanning direction cross-sectional view of an image reading apparatus according to the present invention, FIG. 3 is a perspective view of an optical frame of the image reading apparatus, Fig. 4 A enlarged detail of Figure 3, Figure 5 is A in FIG. 3 it is a perspective view showing a dust-proof film sticking previous state of the parts.

図2に示すように、画像読取装置50は、筐体を構成する箱状構造体である光学フレーム51を備えており、この光学フレーム51の上面にはコンタクトガラス50aが設けられている。 2, the image reading apparatus 50 includes an optical frame 51 is a box-like structure constituting the casing, the contact glass 50a is provided on the upper surface of the optical frame 51.

又、光学フレーム51の内部には、副走査方向に移動可能な第1及び第2移動キャリッジ52,53が収容されている。 Also, inside the optical frame 51, first and second movable carriage 52 which is movable in the sub-scanning direction is accommodated. ここで、第1移動キャリッジ52には、コンタクトガラス50a上に載置された原稿Gを照明する照明部54と、原稿Gにて反射した読取光(反射光)を90°方向に反射させる第1反射ミラー55が設けられており、第2キャリッジ53には、第1反射ミラー55にて反射した反射光を90°方向に反射させる第2反射ミラー56と、前記第2反射ミラー56にて反射した反射光を更に90°方向に反射させる第3反射ミラー57が設けられており、これらの第1及び第2移動キャリッジ52,53は、不図示のガイドレールに沿って副走査方向(図2の左右方向)に移動する。 Here, the first moving carriage 52, an illumination unit 54 for illuminating the document placed G on the contact glass 50a, the reflecting reflected by the original G reading light (reflection light) at 90 ° direction 1 and reflecting mirror 55 are mounted on the second carriage 53, a second reflecting mirror 56 for reflecting the light reflected by the first reflecting mirror 55 in the direction of 90 °, by the second reflecting mirror 56 third and reflecting mirror 57 is provided to reflect the reflected further 90 ° direction reflected light, first and second moving carriage 52, 53 of these, the sub-scanning direction (FIG along the not shown guide rail It moves to the second lateral direction).

更に、光学フレーム51の内部には結像レンズ58と撮像素子であるCCD59が収容されており、前記第3反射ミラー57にて反射した原稿Gからの読取光は、結像レンズ58によって収束した後にCCD59に入射し、前記CCD59上に結像される。 Further, the inside of the optical frame 51, CCD59 is accommodated an imaging lens 58 and the imaging device, the reading light from the original G reflected by the third reflecting mirror 57, converged by the imaging lens 58 after entering the CCD59, it is imaged on the CCD59.

ところで、図2に示すように、前記照明部54は、光源として主走査方向(図2の示す垂直方向)に列状(アレイ状)に配設された発光素子である複数のLED(発光ダイオード)60を使用するものであって、図示しないが、これらのLED60は主走査方向に細長いLED基板上に実装されている。 Meanwhile, as shown in FIG. 2, the lighting unit 54, the main scanning direction as the light source (vertical direction indicated by FIG. 2) in rows a plurality of LED (light-emitting diode is a light emitting element disposed on (array) ) it is one which uses the 60, although not shown, these LED60 are mounted in the main scanning direction in an elongated LED substrate. そして、LED基板上のLED60の光出射方向前方(図2の左方)には主走査方向に長い導光体61が固定されている。 Then, the light emitting forward long light guide 61 in the main scanning direction (the left in FIG. 2) of the LED60 on the LED substrate is fixed. この導光体61は、アクリル樹脂等の透明樹脂又はガラスによって構成されている。 The light guide 61 is constituted by a transparent resin or glass such as acrylic resin. 又、上記導光体61に対向する位置には、主走査方向に長いリフレクタ62が斜めに配置されている。 Further, at a position opposed to the light guide 61 is in the main scanning direction longer reflector 62 is disposed obliquely.

次に、以上のように構成された原稿読取装置50の画像読取動作について説明する。 Next, the image reading operation of the document reading apparatus 50 configured as described above will be described.

例えば、図1に示す自動原稿搬送装置40の原稿トレイ41にセットされた原稿Gが原稿読取部であるコンタクトガラス50a上に自動的に搬送され、その原稿Gの画像が画像読取装置50によって光学的に読み取られる。 For example, optical by the contact glass 50a on is conveyed automatically, the image is an image reading apparatus 50 of the document G original G set on the document tray 41 of the automatic document feeder 40 is a document reading unit shown in FIG. 1 specifically to be read.

即ち、第1移動キャリッジ52と第2移動キャリッジ53が不図示のガイドレールに沿って副走査方向(図2の左右方向)に移動しながらコンタクトガラス50a上に載置された原稿Gを走査すると、第1移動キャリッジ52のLED60から出射する光は導光体61に入射する。 That is, a first moving carriage 52 when the second moving carriage 53 scans the document G placed on a contact glass 50a while moving in the sub-scanning direction (lateral direction in FIG. 2) along the not shown guide rail , light emitted from LED60 of the first moving carriage 52 is incident on the light guide 61. この導光体61内に入射した光は前記光体61を通過するが、導光体61から出射する光の一部は原稿Gに直接向かい、他の光はリフレクタ62にて反射した後に原稿Gに向かい、原稿Gはこれらの光によって照明される。 The light incident on the light guide body 61 passes through the optical member 61, a part of light emitted from the light guide 61 toward directly on the document G, the document after being reflected by the other light reflector 62 towards the G, the original G is illuminated by these lights. そして、これらの光は原稿Gにて反射し、その反射光は、第1移動キャリッジ52の第1反射ミラー55にて90°方向に反射した後、第2移動キャリッジ53の第2反射ミラー56と第3反射ミラー57にて90°方向にそれぞれ反射し、結像レンズ58によって収束した後にCCD59に入射し、前記CCD59によって読み取られて電気信号に変換される。 Then, these lights reflected by the document G, the reflected light, after being reflected by the first reflecting mirror 55 of the first moving carriage 52 in the direction of 90 °, the second reflecting mirror 56 of the second movable carriage 53 When reflected respectively by the third reflecting mirror 57 in the direction of 90 °, incident on the CCD59 after converged by the imaging lens 58, and converted into an electrical signal read by the CCD59.

上述のようにして原稿Gの画像が画像読取装置50によって光学的に読み取られると、その電気信号が各露光装置3a〜3dへと送信され、各露光装置3a〜3dは、電気信号に基づくレーザー光を出力し、図1に示すカラー複合機において前述のような画像形成動作が行われてカラー画像が形成される。 When the image of the to document G as described above is optically read by the image reading apparatus 50, is transmitted the electrical signal to each exposure unit 3 a to 3 d, the exposure apparatus 3 a to 3 d, the laser-based electrical signal outputting light, a color image is formed is carried out the aforementioned image forming operation in the color MFP shown in FIG.

ところで、図3に示すように、光学フレーム51の上面の周囲には読取光学系の組み立てや調整のための切欠き63や孔64、65が形成されており、光学フレーム51の外側には不図示の外装カバーが設けれているが、この外装カバーと光学フレーム51の間の隙間から侵入した異物(大きさ約0.3mm以下の粉塵等)が光学フレーム51の切欠き63や孔64、65から光学フレーム51に入ると光路を塞いで筋状の画像が発生する可能性があることは前述の通りである。 Meanwhile, as shown in FIG. 3, the periphery of the upper surface of the optical frame 51 are notches 63 and holes 64 and 65 for the assembly and adjustment of the reading optical system is formed, on the outside of the optical frame 51 is not Although the illustrated outer cover is provided, the notch 63 and the hole 64 of the outer cover and the foreign matter entering from the gap between the optical frame 51 (the size of about 0.3mm less dust) optical frame 51, Once in the optical frame 51 65 the streak-like image block the light path may occur are as defined above.

そこで、本実施の形態では、光学フレーム51に形成された切欠き63や孔64、65を塞ぐ防塵フィルム66,67を前記光学フレーム51に貼り付ける構成を採用している。 Therefore, in the present embodiment employs a configuration in which paste the dustproof film 66 and 67 to close the notch 63 and hole 64, 65 formed in the optical frame 51 in the optical frame 51. ここで、光学フレーム51に形成された切欠き63や孔64(図3のA部)は、製造ラインや市場で読取光学部品を交換した後に組み立てや調整のために再び使用されるものであって、これらが形成された光学フレーム51の箇所は図5に示す状態から図4に示すように防塵フィルム66が不図示のマジックテープ(登録商標)によって取り外し可能に貼り付けられる。 Here, (A portion in FIG. 3) optical frame 51 notch formed in 63 and holes 64, be those that are used again for assembly and adjustment after replacing the optics reading the production line and market Te, portions of the optical frame 51 to which they are formed dustproof film 66 as shown in FIG. 4 from the state shown in FIG. 5 is removably adhered to the Velcro (not shown) (registered trademark).

他方、光学フレーム51に形成された孔65は調整治具を嵌め込むためのものであって、再び使用されるものではないため、これらの孔65を塞ぐ防塵フィルム67は光学フレーム51に不図示の両面テープによって取り外し不能に貼り付けられる。 On the other hand, be for hole 65 formed in the optical frame 51 fitting the adjusting jig, because it is not intended to be used again, dustproof film 67 to close these holes 65 is not shown in the optical frame 51 affixed to non-removable by the double-sided tape.

以上のように、本実施の形態では、光学フレーム51に形成された切欠き63や孔64、65が光学フレーム51に貼付された防塵フィルム66、67によって塞がれるため、これらの切欠き63や孔64、65から光学フレーム51内への異物の侵入が防がれ、光学フレーム51の内部に浸入した異物が光路を塞ぐことによる筋状画像の発生が確実に防がれる。 As described above, in this embodiment, since the notch 63 and hole 64, 65 formed in the optical frame 51 is closed by the dust-proof film 66, 67 affixed to the optical frame 51,-out these notches 63 and foreign material from entering the optical frame 51 is prevented from holes 64 and 65, the foreign matter that has entered the inside of the optical frame 51 the occurrence of streak-shaped image by closing the optical path is ensured prevented. そして、このような効果は単に防塵フィルム66、67を光学フレーム51に貼り付けるだけの簡単な構成によって得られるため、コストアップを招くことがない。 Then, such effect can be obtained simply by a simple configuration in which only paste dustproof film 66 and 67 to the optical frame 51, never increase in cost.

又、本実施の形態では、防塵フィルム66を取り外しする光学フレーム51の箇所には前記防塵フィルム66をマジックテープ(登録商標)によって貼り付けるため、製造ラインや市場で読取光学部品を交換した後に組み立てや調整のために光学フレーム51に形成された切欠き63や孔64を再び使用するときには、マジックテープ(登録商標)で貼り付けられた防塵フィルム66を光学フレーム51から簡単に剥がすことができ、組み立てや調整が済んだ後にはマジックテープ(登録商標)によって防塵フィルム66を光学フレーム51に再び簡単に貼り付けて切欠き63や孔64を塞ぐことができる。 Further, in this embodiment, since the position of the optical frame 51 to remove the dust film 66 pasted the dustproof film 66 by hook and loop, assembled after replacing the optics reading the production line and market and when again using the notch 63 and hole 64 formed in the optical frame 51 for adjustment it can be easily peeled off the dustproof film 66 affixed with Velcro (TM) from the optical frame 51, the come after the assembly and adjustment can be closed notches 63 and holes 64 paste again briefly to the optical frame 51 to dustproof film 66 by Velcro (registered trademark).

そして、読取光学部品の組み立てや調整の際に再び使用されない孔65が形成された光学フレーム51の箇所は防塵フィルム67を剥がす必要がないため、この防塵フィルム67を両面テープによって光学フレーム51に簡単に貼り付けることができる。 The location of the read optics assembly and adjustment during optical frame 51 are formed holes 65 which are not used again because there is no need to peel off the dustproof film 67, simplify this dustproof film 67 to the optical frame 51 by a double-sided tape it can be pasted on.

尚、本実施の形態では、本発明をカラー複合機及びこれに備えられた画像読取装置に対して適用した例について説明したが、本発明は、単体としての複写機、プリンター、ファクシミリ等、他の任意の画像形成装置及びこれに備えられた画像読取装置に対しても同様に適用可能であることは勿論である。 In this embodiment, an example was described in which the present invention is applied to a color MFP and the image reading device provided in this invention, as a single copier, printer, facsimile machine, other it is of course also for any of the image forming apparatus and an image reading device provided in this is applicable as well.

1 画像形成部 1M マゼンタ画像形成ユニット 1C シアン画像形成ユニット 1Y イエロー画像形成ユニット 1K ブラック画像形成ユニット 40 自動原稿搬送装置 50 原稿読取装置 50a コンタクトガラス 51 光学フレーム 52 第1キャリッジ 53 第2キャリッジ 54 照明部(照明手段) First image forming unit 1M magenta image forming unit 1C cyan image forming units 1Y yellow image forming unit 1K black image forming unit 40 an automatic document feeder 50 document reading device 50a contact glass 51 optical frame 52 first carriage 53 second carriage 54 illumination unit (lighting means)
55 第1反射ミラー 56 第2反射ミラー 57 第3反射ミラー 58 結像レンズ 59 CCD(撮像素子) 55 first reflecting mirror 56 second reflecting mirror 57 third reflecting mirror 58 forming lens 59 CCD (image pickup device)
60 LED(光源) 60 LED (light source)
61 導光体 62 リフレクタ 63 光学フレームの切欠き 64,65 光学フレームの孔 66,67 防塵フィルム 70 用紙収納部 80 転写搬送ユニット 90 両面搬送ユニット 100 画像形成装置本体 61 light guide member 62 reflector 63 optical frame of the notch 64, 65 of the optical frame holes 66, 67 dustproof film 70 sheet storage section 80 transfer conveyer unit 90 duplex conveying unit 100 the image forming apparatus main body

Claims (4)

  1. 原稿を光照明する照明手段と、原稿からの反射光を結像させる結像レンズと、前記結像レンズによって結像された潜像を電気信号に変換する撮像素子を光学フレーム内に収容して成る画像読取装置において、 Illuminating means for light illuminating the original, an imaging lens for focusing the reflected light from the document, the imaging device for converting a latent image formed by the imaging lens into an electric signal housed in the optical frame in the image reading apparatus comprising,
    前記光学フレームに形成された切欠きや孔を塞ぐ防塵フィルムを該光学フレームに貼付したことを特徴とする画像読取装置。 Image reading apparatus, wherein a dustproof film for closing the notch or hole formed in the optical frame was attached to the optical frame.
  2. 前記防塵フィルムを取り外しする前記光学フレームの箇所には前記防塵フィルムを取り外し可能なテープによって貼付し、防塵フィルムを取り外ししない前記光学フレームの箇所には前記防塵フィルムを両面テープによって貼付したことを特徴とする請求項1記載の画像読取装置。 The portion of the optical frames for detaching said dust-proof film is stuck by the possibility tape Remove the dustproof film, the portion of the optical frame not remove the dust film and characterized in that attached by a double-sided tape the dustproof film the image reading apparatus according to claim 1.
  3. 前記防塵フィルムを取り外しする前記光学フレームの箇所には前記防塵フィルムをマジックテープによって貼付し、防塵フィルムを取り外ししない前記光学フレームの箇所には前記防塵フィルムを両面テープによって貼付したことを特徴とする請求項1記載の画像読取装置。 Wherein said at positions of the optical frames for detaching the dust film adhered by velcro the dustproof film, the portion of the optical frame not remove the dust film characterized in that attached by a double-sided tape the dustproof film image reading apparatus of claim 1, wherein.
  4. 請求項1〜3の何れかに記載の画像読取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 image reading apparatus according to any one of claims 1 to 3.
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