JP4235585B2 - Image reading device - Google Patents

Image reading device Download PDF

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JP4235585B2
JP4235585B2 JP2004161246A JP2004161246A JP4235585B2 JP 4235585 B2 JP4235585 B2 JP 4235585B2 JP 2004161246 A JP2004161246 A JP 2004161246A JP 2004161246 A JP2004161246 A JP 2004161246A JP 4235585 B2 JP4235585 B2 JP 4235585B2
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image reading
contact glass
glass
frame
reading apparatus
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JP2005020723A (en
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浩一郎 辻本
智英 穂園
伸一 小寺
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Kyocera Document Solutions Inc
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Kyocera Mita Corp
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  • Optical Systems Of Projection Type Copiers (AREA)
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Description

本発明はCCD及び反射ミラーや集光レンズ等の光学系が組み込まれた画像読取ユニットが所定方向に往復動可能に本体フレーム内に配置された画像読取装置に係り、特に本体フレーム上面に画像読取用の原稿を載置するコンタクトガラスを具えた画像読取装置に関する。   The present invention relates to an image reading apparatus in which an image reading unit incorporating an optical system such as a CCD, a reflection mirror, and a condensing lens is disposed in a main body frame so as to be reciprocable in a predetermined direction. The present invention relates to an image reading apparatus provided with a contact glass for placing a document for use.

産業界全般にわたって、産業部品のリサイクルは進められており、複写機やスキャナ等では一般にプラスチック材でフレーム等が構成され、又内装部品である画像読取ユニットに組み込まれた光学系は一般に調整機能を持つために、ネジ等で固定されており、従ってリサイクルや交換のための取り外しは容易である。又読取装置の本体フレーム上に原稿を載置するコンタクトガラスや該コンタクトガラスに連設される画像読取用のスリットガラスにおいても、これらのガラスが汚染された場合の交換及びリサイクルの容易化を図るために、例えば特許文献1に示すように、フレーム側に設けた係止部材等で固定して取外し可能に構成している。   Recycling of industrial parts is being promoted throughout the industry. In general, frames such as copiers and scanners are generally made of plastic materials, and the optical system built into the image reading unit, which is an interior part, generally has an adjustment function. In order to hold it, it is fixed with screws or the like, so that it is easy to remove for recycling or replacement. Further, contact glass for placing a document on the main body frame of the reading device and slit glass for image reading connected to the contact glass also facilitate replacement and recycling when the glass is contaminated. Therefore, for example, as shown in Patent Document 1, it is configured to be fixed by a locking member or the like provided on the frame side so as to be removable.

例えば図7は前記先行技術に示す概略図で、コンタクトガラス102の2辺にサイズ指示板101の横板101aと縦板101bをそれぞれ沿わせて両面粘着テープ104等で接着した後,サイズ指示板101の突起部111を本体フレーム103の孔103aに嵌合させつつ,サイズ指示板101とコンタクトガラス102とを本体フレーム103上に載置する。最後に,上記サイズ指示板101のエッジ部近傍を覆うカバー105(固定部材の一例)を上記本体フレーム103に固定すれば,サイズ指示板101とコンタクトガラス102は本体フレーム103上に固定される。
特開2001−142157公報
For example, FIG. 7 is a schematic diagram showing the prior art, in which the size indicating plate is bonded to the two sides of the contact glass 102 along the side plate 101a and the length plate 101b of the size indicating plate 101 with the double-sided adhesive tape 104 or the like. The size indicating plate 101 and the contact glass 102 are placed on the main body frame 103 while fitting the protruding portions 111 of the 101 into the holes 103 a of the main body frame 103. Finally, when a cover 105 (an example of a fixing member) covering the vicinity of the edge portion of the size indicating plate 101 is fixed to the main body frame 103, the size indicating plate 101 and the contact glass 102 are fixed on the main body frame 103.
JP 2001-142157 A

しかしながらこのような構成では、コンタクトガラスの2辺にサイズ指示板101を固着した状態でのサイズ指示板に設けた突起部111を本体フレーム103の孔103aに嵌合させて固定する構造であり、更にサイズ指示板の上にはカバーを取り付けなければならず、組立工数が増大するのみならず、コンタクトガラス102と本体フレーム103間は粘着テープを用いない直接接触であるために、平面度のばらつきにより両者間に隙間ができやすく、本体フレーム内に収納した画像読取ユニットの移動により生成される空気流による外部よりの通流によりパーテイクルが入りやすい構造になっている。   However, in such a configuration, the protrusion 111 provided on the size indicator plate in a state where the size indicator plate 101 is fixed to the two sides of the contact glass is fitted into the hole 103a of the main body frame 103 and fixed. Furthermore, a cover must be attached on the size indicating plate, which not only increases the number of assembly steps, but also the contact glass 102 and the main body frame 103 are in direct contact without using adhesive tape. As a result, a gap is easily formed between the two, and the structure is such that particles are likely to enter due to the flow of air from outside caused by the movement of the image reading unit housed in the main body frame.

又コンタクトガラスを装置本体よりの取り出しは、サイズ指示板101の横板101aと縦板101bを更に取り外さなければならず、薄いサイズ指示板101を両面テープ104で全面接着されたものを取り外すことはなかなか困難である。   In order to remove the contact glass from the apparatus main body, the horizontal plate 101a and the vertical plate 101b of the size indicating plate 101 must be further removed, and it is not possible to remove the thin size indicating plate 101 that has been adhered to the entire surface with the double-sided tape 104. It is quite difficult.

特にサイズ指示板の裏面に両面テープを介して全面がコンタクトガラスに実質的に接着している構成では、サイズ指示板のはぎとりのためにマイナスドライバ等を使用するとサイズ指示板が薄肉であり、その剥ぎ取りが困難であるのみならず、コンタクトガラスの両面粘着テープの粘着力が強いために、マイナスドライバによるコンタクトガラスの傷付きや破損が生じ、リサイクルができなくなる、等の問題点を有している。   In particular, in the configuration where the entire surface is substantially adhered to the contact glass via the double-sided tape on the back surface of the size indicator plate, the size indicator plate is thin when a flat head screwdriver is used to peel off the size indicator plate. Not only is it difficult to peel off, but because the adhesive strength of the double-sided adhesive tape of contact glass is strong, the contact glass may be damaged or damaged by a flat-blade screwdriver, making it impossible to recycle. Yes.

本発明はかかる従来技術の課題に鑑み、コンタクトガラスの交換及びリサイクルの容易化を図るとともに、該ガラス取外し時におけるコンタクトガラスの破損を防止し、更に画像読取ユニット動作時に塵埃等の侵入を防止することを目的とする画像読取装置の提供にある。
又本発明の他の目的は、本体フレームとコンタクトガラスの組み付けと取外しの容易化を図った画像読取装置の提供にある。
更に本発明の他の目的は、下フレームに対するコンタクトガラスの位置決めが確実になるとともに、上フレームに両面粘着テープの接着力の低下があってもコンタクトガラスを確実に保持できる画像読取装置の提供にある。
In view of the problems of the prior art, the present invention facilitates replacement and recycling of the contact glass, prevents damage to the contact glass when the glass is removed, and prevents intrusion of dust and the like when the image reading unit is operated. An object of the present invention is to provide an image reading apparatus.
Another object of the present invention is to provide an image reading apparatus that facilitates assembly and removal of the main body frame and the contact glass.
Furthermore, another object of the present invention is to provide an image reading apparatus capable of reliably positioning the contact glass with respect to the lower frame and securely holding the contact glass even when the adhesive strength of the double-sided adhesive tape is reduced on the upper frame. is there.

本発明はかかる目的を達成するために、CCD及び光学系が組み込まれた画像読取ユニットが所定方向に往復動可能に本体フレーム内に配置され、本体フレーム上面に画像読取用の原稿を載置するコンタクトガラスを具えた画像読取装置であって、
前記本体フレームが、画像読取ユニットが本体長手方向に往復動可能に収納され上側が開口する下フレームと、上面にコンタクトガラス取付空間を有する上フレームとを有し、両上下フレームに夫々設けた嵌合部を介して両者が分離可能に組み付けられるとともに、前記コンタクトガラスの下面に、前記下フレームより突設するガラス受部を設けたことを第1の要旨とする。そして本発明は、前記上フレームのコンタクトガラス取付空間の下面外周に沿って貼り着された帯状の粘着材を介してコンタクトガラスが配設されるとともに、該帯状の粘着材は、部分的に接続が途切れた途切れ部を有する断続形態にて前記下面外周に接着され、前記途切れ部と対向する前記コンタクトガラスの下面に、前記下フレームより突設する前記ガラス受部を設けたことを第2の要旨とする。
In order to achieve this object, an image reading unit incorporating a CCD and an optical system is disposed in a main body frame so as to reciprocate in a predetermined direction, and an image reading document is placed on the upper surface of the main body frame. An image reading apparatus comprising contact glass,
The main body frame has a lower frame in which the image reading unit is reciprocally movable in the longitudinal direction of the main body and has an upper opening, and an upper frame having a contact glass mounting space on the upper surface. with both via the engaging portion is assembled detachably on the lower surface of the contact glass, which in that a glass receiving portion to protrude from the lower frame and the first aspect. In the present invention, the contact glass is disposed via a belt-like adhesive material adhered along the outer periphery of the lower surface of the contact glass mounting space of the upper frame, and the belt-like adhesive material is partially connected. is bonded to the lower surface periphery in intermittent form with discontinuity choppy, the lower surface of the contact glass opposite to the discontinuity, in that a said glass receiving portion to protrude from the lower frame of the second The gist .

かかる発明によれば、下フレームより突設するガラス受部を設けたために、下フレームに対するコンタクトガラスの位置決めが確実になるとともに、上フレームに両面粘着テープの接着力の低下があってもコンタクトガラスを確実に保持できる。   According to this invention, since the glass receiving portion protruding from the lower frame is provided, the contact glass is reliably positioned with respect to the lower frame, and the contact glass is provided even if the adhesive strength of the double-sided adhesive tape is reduced on the upper frame. Can be securely held.

ここで前記粘着材とは、引きはがし可能な程度に接着されているものも含み、又帯状粘着材はテープ状基材の両面に粘着材が塗布された両面粘着テープのみに限定されることなく片面側がフレームに固着された片面テープも含む。   Here, the adhesive material includes those that are bonded to such an extent that they can be peeled off, and the strip-shaped adhesive material is not limited to a double-sided adhesive tape in which an adhesive material is applied to both sides of a tape-like substrate. It also includes a single-sided tape with one side secured to the frame.

かかる発明によれば、組み付け時は、上フレームのコンタクトガラス取付空間の下面外周が連続した粘着材によるシール状態ではなく、部分的に接続が途切れた途切れ部を有する断続形態にて上フレームに帯状粘着材を貼着した後、該上フレームにコンタクトガラスを位置決め粘着する。   According to this invention, when assembled, the lower frame outer periphery of the contact glass mounting space of the upper frame is not in a sealed state with a continuous adhesive material, but in an intermittent form having a discontinuous portion in which the connection is partially interrupted. After adhering the adhesive material, the contact glass is positioned and adhered to the upper frame.

次にコンタクトガラスが位置決め粘着されている上フレームを下フレームに嵌合部を介して組み付けるだけでよく、組み付けが極めて簡易化する。
又上フレームのコンタクトガラス取付空間の下面外周に帯状の粘着材を介してコンタクトガラスが配設されるが、上フレームの上面はコンタクトガラスが存在しないためにその部分にサイズ指示板を印刷若しくは貼着でき、コンタクトガラスとサイズ指示板を直接接合させる必要がない。
Next, it is only necessary to assemble the upper frame on which the contact glass is positioned and adhered to the lower frame via the fitting portion, which greatly simplifies the assembly.
The contact glass is disposed on the outer periphery of the lower surface of the contact glass mounting space of the upper frame via a band-shaped adhesive. However, since there is no contact glass on the upper surface of the upper frame, a size indicating plate is printed or pasted on that portion. There is no need to directly bond the contact glass and the size indicator plate.

又取外し時は、前記嵌合部の嵌合を解除して上下フレームを分解した後、コンタクトガラスの外周部を本体上フレームの取り付け空間下面外周に実質的に引きはがし可能に接着している帯状粘着材(好ましくは両面粘着テープ)の途切れ部にマイナスドライバ状の剥ぎ取り用具を挿入して、該コンタクトガラスを両面粘着テープから剥ぎ取ることにより、コンタクトガラスを本体上フレームから容易に取り外すことができる。   When removing, the upper and lower frames are disassembled by releasing the fitting portion, and then the outer periphery of the contact glass is bonded to the outer periphery of the lower surface of the mounting space of the upper frame on the main body so that it can be peeled off. The contact glass can be easily removed from the frame on the main body by inserting a screwdriver-like stripping tool into the cut portion of the adhesive material (preferably a double-sided adhesive tape) and peeling the contact glass from the double-sided adhesive tape. it can.

また、前記途切れ部は剥ぎ取り用具を挿入できる幅の開口が必要であり、これにより途切れ部に剥ぎ取り要具を挿入でき、コンタクトガラスの両面粘着テープからの剥ぎ取り時に該コンタクトガラスに傷を付けたり破損させる恐れがなく、画像読取装置から取り外したコンタクトガラスをそのままの状態で再使用することも可能であり、コンタクトガラスのリサイクル率が向上する。   Further, the cut-off portion needs an opening having a width capable of inserting a stripping tool, whereby the stripping tool can be inserted into the cut-off portion, and the contact glass is damaged when the contact glass is peeled off from the double-sided adhesive tape. There is no fear of attaching or damaging the contact glass, and the contact glass removed from the image reading apparatus can be reused as it is, and the contact glass recycling rate is improved.

さてコンタクトガラス取付空間の下面外周が連続した粘着材によるシール状態ではなく、部分的に接続が途切れた途切れ部を有する断続形態にて帯状粘着材が貼着されているために、その部分よりゴミが侵入し、本体フレーム内に収納した画像読取ユニットの光学系を汚染する恐れも考えられる。   Now, the adhesive on the lower surface of the contact glass mounting space is not sealed with a continuous adhesive material, but the strip-shaped adhesive material is attached in an intermittent form with a discontinuous part where the connection is partially interrupted. May intrude and contaminate the optical system of the image reading unit housed in the main body frame.

そこで本発明は前記途切れ部と対向する前記コンタクトガラスの下面に、下フレームより突設するガラス受部を設けて途切れ部両側に位置する粘着材を押圧して途切れ部の隙間を実質的に微少にしている。   Accordingly, the present invention provides a glass receiving portion projecting from the lower frame on the lower surface of the contact glass facing the interrupted portion, and presses the adhesive material located on both sides of the interrupted portion to substantially reduce the gap between the interrupted portions. I have to.

特に両面粘着テープの場合はその基体となる部分は薄層スポンジ体であるために、下フレームより突設するガラス受部とこれを下方より付勢する上下フレームの嵌合部材の嵌合力の、2つの押圧(付勢)力により薄層スポンジ体が実質的につぶれて隙間が微少(ゼロに近い状態)になり、装置の作動時に画像読取ユニットの往復動等によって外部から該隙間を通って侵入しようとするごみ、埃等の微小片の通過を遮断することができる。   Especially in the case of double-sided pressure-sensitive adhesive tape, since the base part is a thin-layer sponge body, the glass receiving part protruding from the lower frame and the fitting force of the fitting members of the upper and lower frames urging this from below, The thin-layer sponge body is substantially crushed by two pressing (biasing) forces, and the gap becomes very small (near zero). When the apparatus is operated, the image reading unit reciprocates through the gap from the outside. It is possible to block the passage of fine pieces such as dust and dust to enter.

この場合に前記ガラス受部が、途切れ部両岸の粘着材部を押圧する面接触形状であれば、前記ガラス受部幅が、途切れ部幅より小さくてもよいが、好ましくは前記ガラス受部幅が、途切れ部幅と同等か大であるのがよく、これにより薄層スポンジ体が実質的につぶれて隙間が更にゼロに近い状態になる。これにより、前記帯状粘着材に途切れ部を形成したことによる装置内部へのごみ、埃等の微小片の侵入が回避され、装置を安定的に作動させることができる。   In this case, if the glass receiving portion has a surface contact shape that presses the adhesive material portions on both sides of the interrupted portion, the glass receiving portion width may be smaller than the interrupted portion width, but preferably the glass receiving portion. The width should be equal to or larger than the width of the discontinuity, and this causes the thin-layer sponge body to be substantially crushed and the gap to be in a state closer to zero. Thereby, the intrusion of minute pieces such as dust and dust into the apparatus due to the formation of the interrupted portion in the band-shaped adhesive material can be operated stably.

また、かかる発明において、前記コンタクトガラス取付空間の対向する二辺に位置している途切れ部、特に前記画像読取ユニットの往復動方向と直交するコンタクトガラス取付空間の両短手辺に位置している途切れ部において夫々の短手辺に設けた途切れ部が、他側短手辺に設けた途切れ部に対し、短手方向に位置をずらして配置されているのがよい。   Further, in this invention, the discontinuity located on the two opposite sides of the contact glass mounting space, particularly on both short sides of the contact glass mounting space orthogonal to the reciprocating direction of the image reading unit. It is preferable that the discontinuous portions provided on the short sides of the discontinuous portions are arranged with their positions shifted in the short direction with respect to the discontinuous portions provided on the other short side.

このように構成すれば前記画像読取ユニットの往復動によって生じる空気流の方向にたとえ微少隙間の前記途切れ部を有していてもその空気流の上流側と下流側とで該空気流吹き抜け方向に対して短手辺方向に位置をずらして配置されるので、空気流の上流側に位置する前記途切れ部の隙間を通った空気流が下流側に位置する途切れ部の隙間に吹き抜け難くなり、かかる空気の吹き抜けに伴う装置内部へのごみ、埃等の微小片の侵入一層抑制される。   According to this structure, even if the air flow generated by the reciprocating motion of the image reading unit has the discontinuous portion with a small gap, the air flow is blown in the direction of the air flow between the upstream side and the downstream side. On the other hand, since the position is shifted in the short side direction, the air flow passing through the gap of the interrupted portion located on the upstream side of the air flow is difficult to blow through the gap of the interrupted portion located on the downstream side. Intrusion of fine particles such as dust and dust into the apparatus accompanying air blow-off is further suppressed.

もちろんこの場合も前記途切れ部とともにガラス受部も、読取手段の往復動方向と直交するコンタクトガラス取付空間の対面する短手辺二辺に位置し、夫々の短手辺に設けた途切れ部に対応させてガラス受部も短手方向に位置をずらして配置されているのがよい。   Of course, also in this case, the glass receiving part is located on the two short sides facing the contact glass mounting space orthogonal to the reciprocating direction of the reading means, and corresponds to the broken part provided on each short side. It is preferable that the glass receiving portions are also arranged so as to be shifted in the lateral direction.

又前記途切れ部及びガラス受部は、短手辺中心線に対し対称で且つ個数を異ならせて配置されていることによりコンタクトガラス押圧面の押圧荷重が均等に分散でき、好ましい。   The discontinuous part and the glass receiving part are preferably symmetrical with respect to the short side center line and arranged in a different number so that the pressing load on the contact glass pressing surface can be evenly distributed.

もちろん両長手辺側に設けた前記途切れ部及びガラス受部も同様に構成するのがよい。   Of course, the discontinuous part and the glass receiving part provided on both long side sides are preferably configured in the same manner.

以上記載の如く本発明によれば、コンタクトガラスの交換及びリサイクルの容易化を図るとともに、該ガラス取外し時におけるコンタクトガラスの破損を防止し、更に画像読取ユニット動作時に塵埃等の侵入を防止できる画像読取装置が提供できる。   As described above, according to the present invention, the replacement and recycling of the contact glass can be facilitated, the contact glass can be prevented from being damaged when the glass is removed, and the intrusion of dust or the like can be prevented when the image reading unit is operated. A reader can be provided.

以下、図面に基づいて本発明の実施の形態を例示的に詳しく説明する。但し、この実施の形態に記載されている構成部品の寸法、材質、形状、その相対配置などは、特に特定的な記載がない限りはこの発明の範囲をそれのみに限定する趣旨ではなく、単なる説明例に過ぎない。   Hereinafter, embodiments of the present invention will be exemplarily described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. This is just an example.

図1は本発明の実施例に係るオートフィーダ型原稿自動読取機構を有せずコンタクトガラスのみの画像読取装置の本体フレーム部分の分解斜視図、図2は図1のA―A線断面図、図3は両面粘着テープとガラス受部の位置関係を示す図1対応の作用説明図である。図4は本発明の実施例に係るオートフィーダ型原稿自動読取機構が搭載可能でコンタクトガラスとともにスリットガラスを有する画像読取装置の本体フレーム部分の分解斜視図、図5は図4の実施例に係る画像読取装置の全体構造を示す斜視図であるが、原稿自動読取機構は搭載せずに原稿押さえ板として機能するカバーを取り付けている。図6は、図4における、両面粘着テープとガラス受部の位置関係を示す説明図である。   FIG. 1 is an exploded perspective view of a main body frame portion of an image reading apparatus that does not have an auto-feeder type automatic document reading mechanism according to an embodiment of the present invention and uses only contact glass, and FIG. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is an operation explanatory view corresponding to FIG. 1 showing the positional relationship between the double-sided pressure-sensitive adhesive tape and the glass receiving portion. FIG. 4 is an exploded perspective view of a main body frame portion of an image reading apparatus in which an automatic feeder type automatic document reading mechanism according to an embodiment of the present invention can be mounted and has a contact glass and a slit glass, and FIG. 5 is related to the embodiment of FIG. 1 is a perspective view showing the overall structure of an image reading apparatus, but a cover that functions as a document pressing plate is attached without mounting an automatic document reading mechanism. FIG. 6 is an explanatory view showing the positional relationship between the double-sided pressure-sensitive adhesive tape and the glass receiving part in FIG.

本発明の実施例に係る画像読取装置はいずれも、図5に示すように、扁平長方体形状の本体フレーム20と、該本体フレーム20の上面に画像読取用の原稿を載置するコンタクトガラス3と、本体フレーム20長手方向に沿って往復動可能に収納されたCCD及び光学系が組み込まれた画像読取ユニット11と、コンタクトガラス3上に載置した原稿をおさえるために、その裏面にスポンジを介して白色反射面10aが貼着されたカバー体を具えている。そして前記本体フレーム20は、画像読取ユニット11が本体長手方向に往復動可能に収納され上側が開口する下フレーム2と、上面にコンタクトガラス取付空間3Aを有する上フレーム1とを有し、両上下フレーム1、2に夫々設けた嵌合部6、7を介して両者が分離可能に組み付けられるように構成している。   As shown in FIG. 5, each of the image reading apparatuses according to the embodiments of the present invention has a flat rectangular body frame 20 and a contact glass on which an image reading document is placed on the upper surface of the body frame 20. 3, an image reading unit 11 incorporating a CCD and an optical system that are housed in a reciprocating manner along the longitudinal direction of the main body frame 20, and a sponge on the back surface for holding a document placed on the contact glass 3. A cover body having a white reflective surface 10a attached thereto. The main body frame 20 includes a lower frame 2 in which the image reading unit 11 is housed so as to be reciprocable in the longitudinal direction of the main body and has an upper opening, and an upper frame 1 having a contact glass mounting space 3A on the upper surface. Both are detachably assembled via fitting portions 6 and 7 provided on the frames 1 and 2, respectively.

下フレーム2は図4の実施例においては、長手方向側面に、又図1の実施例においては、短手方向側面に夫々操作盤取り付け部21を具え、該下フレームは上面開口の周囲の4偶等に上フレーム1と嵌合させる嵌合凹部7、凸部6をフレームの4隅を含む収納空間周縁側に設けるとともに、後記する両面粘着テープの途切れ部と対向する前記コンタクトガラス3の下面に当接するように、下フレーム2より直方体で頂面が平面なガラス受部5をブロック状に突設している。   In the embodiment of FIG. 4, the lower frame 2 is provided with an operation panel mounting portion 21 on the side surface in the longitudinal direction, and in the embodiment of FIG. The lower surface of the contact glass 3 is provided with fitting recesses 7 and projections 6 that are fitted to the upper frame 1 evenly on the peripheral side of the storage space including the four corners of the frame, and facing a discontinuous portion of a double-sided adhesive tape to be described later. A glass receiving portion 5 having a rectangular parallelepiped shape and a flat top surface is projected in a block shape from the lower frame 2.

又本体下フレーム2は、その内部には露光ランプ、ミラー、レンズ、結像素子(CCD)等(いずれも不図示)からなる公知の画像読取ユニット11が長手方向に往復動自在に収納されている。   The lower frame 2 of the main body houses therein a known image reading unit 11 including an exposure lamp, a mirror, a lens, an imaging element (CCD), etc. (all not shown) so as to reciprocate in the longitudinal direction. Yes.

前記本体下フレームと嵌合する上フレームは、下面開口の周囲の4偶等に下フレーム2と嵌合させる嵌合凹7、凸部6をフレームの4隅を含む収納空間周縁側に設けるとともに、図1〜3の実施例も図4〜図6の実施例のいずれも方形状のコンタクトガラス取付空間3Aを有し、又図4〜図6の実施例においてはコンタクトガラス3長手方向端側の位置の短手辺と隣接して帯状のスリットガラス取り付け空間03Aを有し、図5においては該スリットガラス取り付け空間03Aにスリットガラス03が取り付けられているが、スリットガラス03は帯状で小幅であるために、公知の方法で取り付けてよい。
又上フレームの上面のコンタクトガラス取り付け空間外側面には、不図示のサイズ指示板が貼着若しくは印刷されている。
The upper frame to be fitted to the lower frame of the main body is provided with fitting recesses 7 and projections 6 to be fitted to the lower frame 2 at the four evens around the opening of the lower surface on the peripheral side of the storage space including the four corners of the frame. 1 to 3 and the embodiment of FIGS. 4 to 6 both have a rectangular contact glass mounting space 3A, and in the embodiment of FIGS. 5 has a strip-shaped slit glass mounting space 03A adjacent to the short side, and in FIG. 5, the slit glass 03 is mounted in the slit glass mounting space 03A. For this, it may be attached by known methods.
A size indicator plate (not shown) is attached or printed on the outer surface of the upper surface of the upper frame where the contact glass is attached.

尚、図4〜図6の実施例ではカバー体を開閉させる上フレームのヒンジ取り付け部8は操作盤取り付け部21の反対側の長手辺に設けているが、図1乃至図3の実施例では操作盤取り付け部21が短手辺側に位置するために、カバー体を開閉させる上フレームのヒンジ取り付け部8は操作盤取り付け部21の反対側の短手辺に設けている。   4 to 6, the hinge mounting portion 8 of the upper frame for opening and closing the cover body is provided on the long side opposite to the operation panel mounting portion 21, but in the embodiment of FIGS. 1 to 3, Since the operation panel mounting portion 21 is located on the short side, the hinge mounting portion 8 of the upper frame for opening and closing the cover body is provided on the short side opposite to the operation panel mounting portion 21.

そしていずれの実施例もコンタクトガラス取付空間3Aの下面外周に沿って貼着された両面粘着テープ4を介して方形のコンタクトガラス3が配設固定されているが、該両面粘着テープ4は、下フレーム2より突設するガラス受部5と対応する位置に、接続が途切れた途切れ部4aを有する断続形態にて前記下面外周に貼着されている。又途切れ部に対応する上フレーム側部に、マイナスドライバ状の剥ぎ取り用具(不図示)を挿入するスリット開口50が設けられている。   In any of the examples, the rectangular contact glass 3 is disposed and fixed via the double-sided adhesive tape 4 attached along the outer periphery of the lower surface of the contact glass mounting space 3A. At the position corresponding to the glass receiving part 5 projecting from the frame 2, it is attached to the outer periphery of the lower surface in an intermittent form having an interrupted part 4 a that is disconnected. In addition, a slit opening 50 for inserting a minus driver-like stripping tool (not shown) is provided on the side of the upper frame corresponding to the interrupted portion.

本発明は、以上のように構成された画像読取装置におけるコンタクトガラス3の取付構造に係るものであり、以下各実施例について詳述する。   The present invention relates to the attachment structure of the contact glass 3 in the image reading apparatus configured as described above, and each example will be described in detail below.

本発明の第1実施例を示す図1〜3はスリットガラスを設けない原稿載置型の読取装置で、上フレーム1のほぼ全面にコンタクトガラス3が位置している。前記コンタクトガラス3は、図1〜2に示すように、前記本体上フレーム1の外面板1aの下面外周に沿って両面粘着テープ(帯状粘着材)4により固定されて、前記本体下フレーム2の上側開口部2aを覆うようになっている。   FIGS. 1 to 3 showing the first embodiment of the present invention are a document placing type reading apparatus in which no slit glass is provided, and the contact glass 3 is located on almost the entire surface of the upper frame 1. The contact glass 3 is fixed by a double-sided adhesive tape (strip-like adhesive material) 4 along the outer periphery of the lower surface of the outer surface plate 1a of the main body upper frame 1 as shown in FIGS. The upper opening 2a is covered.

前記両面粘着テープ4には、図3に示されるように、前記外面板1aの下面外周に沿った全周において部分的に接続が途切れた途切れ部4aが形成されている。該両面粘着テープ4における途切れ部4aの形成部位は、後述するように、ガラス受部5の設置位置に合わせ、ガラス受部5の幅より僅かに小にしている。   As shown in FIG. 3, the double-sided pressure-sensitive adhesive tape 4 is formed with an interrupted portion 4a in which the connection is partially interrupted along the entire periphery along the outer periphery of the lower surface of the outer surface plate 1a. As will be described later, the site where the interrupted portion 4 a is formed in the double-sided pressure-sensitive adhesive tape 4 is slightly smaller than the width of the glass receiving portion 5 in accordance with the installation position of the glass receiving portion 5.

即ち、図3において、5は前記本体下フレーム2から上方に突設されたガラス受部である。該ガラス受部5は、図3に示されるように、前記両面粘着テープ4における途切れ部4aの下方に対向するように該途切れ部4a毎に設けられ、その扁平な上面が前記コンタクトガラス3の下面に当接して、前記途切れ部4aの形成によって、コンタクトガラス3の前記途切れ部4aに対向する部位に形成される隙間を覆うようになっている。そして前記ガラス受部の頂面幅が、図3に示すように途切れ部幅と同等か大に設定してある。   That is, in FIG. 3, reference numeral 5 denotes a glass receiving portion protruding upward from the main body lower frame 2. As shown in FIG. 3, the glass receiving portion 5 is provided for each interrupted portion 4 a so as to face the lower portion of the interrupted portion 4 a in the double-sided adhesive tape 4, and the flat upper surface of the contact glass 3 Abutting on the lower surface, the formation of the interrupted portion 4a covers a gap formed in a portion of the contact glass 3 facing the interrupted portion 4a. The top surface width of the glass receiving portion is set to be equal to or larger than the discontinuous portion width as shown in FIG.

また、前記ガラス受部5及び途切れ部4aは、前記装置内部の前記画像読取ユニットの往復動等によって形成される空気流の上流側と下流側とで該空気流に直交する方向、即ち前記途切れ部4aとともにガラス受部5も、読取ユニット11の往復動方向と直交するコンタクトガラス取付空間3Aの両短手辺に位置し、夫々の短手辺に設けた途切れ部4Aに対応させてガラス受部5も短手方向に位置をずらして配置されている。   Further, the glass receiving portion 5 and the break portion 4a are formed in a direction perpendicular to the air flow between the upstream side and the downstream side of the air flow formed by the reciprocating motion of the image reading unit in the apparatus, that is, the break. The glass receiving part 5 as well as the part 4a is located on both short sides of the contact glass mounting space 3A orthogonal to the reciprocating direction of the reading unit 11 and corresponds to the discontinuous part 4A provided on each short side. The part 5 is also arranged with its position shifted in the lateral direction.

又前記途切れ部4a及びガラス受部5は、コンタクトガラス取付空間の両短手辺中心に対し対称で且つ個数を異ならせて、具体的には図3に示すように、右側短手辺には、軸中心線を挟んで対称位置に2つ、左側短手辺では軸中心に1つその両側に2つ計3つ配置されている。   Further, the interrupted portion 4a and the glass receiving portion 5 are symmetrical with respect to the center of both short sides of the contact glass mounting space and have different numbers. Specifically, as shown in FIG. Two in a symmetrical position across the axis of the axis, and one on the left short side, one in the center of the axis, and two on each side.

かかる実施例によれば、組み付け時は、上フレーム1のコンタクトガラス取付空間3Aの下面外周が連続した両面粘着テープ4によるシール状態ではなく、部分的に接続が途切れた途切れ部4Aを有する断続形態にて上フレーム1に帯状粘着材を貼着した後、該上フレーム1にコンタクトガラス3を位置決め粘着する。
次にコンタクトガラス3が位置決め粘着されている上フレーム1を下フレーム2に嵌合部6、7を介して組み付けるだけでよく、組み付けが極めて簡易化する。
According to this embodiment, at the time of assembling, not the sealing state by the double-sided adhesive tape 4 in which the lower surface outer periphery of the contact glass mounting space 3A of the upper frame 1 is continuous, but the intermittent form having the disconnected portion 4A partially disconnected. After adhering a band-like adhesive material to the upper frame 1, the contact glass 3 is positioned and adhered to the upper frame 1.
Next, it is only necessary to assemble the upper frame 1 on which the contact glass 3 is positioned and adhered to the lower frame 2 via the fitting portions 6 and 7, and the assembly is extremely simplified.

この場合に途切れ部4aのテープ厚みに対応する隙間よりゴミが侵入し、本体フレーム20内に収納した画像読取ユニット11の光学系の汚染も考えられるが、本実施例は前記途切れ部4aと対向する前記コンタクトガラス3の下面に、下フレーム2より突設するガラス受部5を設けて途切れ部4a両側に位置する両面粘着テープを押圧して途切れ部4aの隙間を実質的に微少にしている。   In this case, dust enters through a gap corresponding to the tape thickness of the interrupted portion 4a, and contamination of the optical system of the image reading unit 11 stored in the main body frame 20 is also conceivable, but this embodiment is opposed to the interrupted portion 4a. A glass receiving portion 5 projecting from the lower frame 2 is provided on the lower surface of the contact glass 3 to press the double-sided adhesive tape located on both sides of the interrupted portion 4a so that the gap between the interrupted portions 4a is made substantially minute. .

特に両面粘着テープ4の場合はその基体となる部分は薄層スポンジ体であるために、下フレームより突設するガラス受部5とこれを下方より付勢する上下フレームの嵌合部材6、7の嵌合力の、2つの押圧(付勢)力により薄層スポンジ体が実質的につぶれて隙間が微少(ゼロに近い状態)になり、装置の作動時に画像読取ユニットの往復動等によって外部から該隙間を通って侵入しようとするごみ、埃等の微小片の通過を遮断することができる   In particular, in the case of the double-sided pressure-sensitive adhesive tape 4, the base portion is a thin-layer sponge, so that the glass receiving portion 5 protruding from the lower frame and the fitting members 6, 7 of the upper and lower frames that urge this from below. The thin-layer sponge body is substantially crushed by the two pressing (biasing) forces, and the gap becomes very small (close to zero). It is possible to block the passage of dust, dust and other small pieces that try to enter through the gap.

この場合に前記ガラス受部が頂面が平面の面接触形状であるので、更に前記ガラス受部5の幅が、途切れ部4a幅より大であるので、これにより薄層スポンジ体が実質的につぶれて隙間が更にゼロに近い状態になる。これにより、前記帯状粘着材に途切れ部を形成したことによる装置内部へのごみ、埃等の微小片の侵入が回避される。   In this case, since the glass receiving portion has a surface contact shape with a flat top surface, the width of the glass receiving portion 5 is larger than the width of the discontinuous portion 4a. It collapses and the gap becomes closer to zero. Thereby, the intrusion of fine pieces such as dust and dust into the inside of the apparatus due to the formation of the interrupted portion in the belt-like adhesive material is avoided.

又取外し時は
前記嵌合部の嵌合を解除して上下フレーム1.2を分解した後、コンタクトガラス3の外周部を本体上フレームの1取り付け空間3A下面外周に実質的に引きはがし可能に接着している両面粘着テープ4の途切れ部にマイナスドライバ状の剥ぎ取り用具(不図示)を挿入して、該コンタクトガラス4を両面粘着テープ4から剥ぎ取ることにより、コンタクトガラス3を本体上フレーム1から容易に取り外すことができる。
Also, when removing, after disengaging the fitting part and disassembling the upper and lower frames 1.2, the outer peripheral part of the contact glass 3 can be substantially peeled to the outer periphery of the lower surface of the attachment space 3A of the main body upper frame. By inserting a minus driver-like stripping tool (not shown) into the cut portion of the double-sided pressure-sensitive adhesive tape 4 that is bonded, and peeling the contact glass 4 from the double-sided pressure-sensitive adhesive tape 4, the contact glass 3 is framed on the main body frame. 1 can be easily removed.

また、前記途切れ部と対応する上フレーム1の側部には剥ぎ取り用具を挿入できる幅の開口50が必要であることも当然であり、これにより途切れ部に剥ぎ取り要具を挿入でき、コンタクトガラスの両面粘着テープからの剥ぎ取り時に該コンタクトガラスに傷を付けたり破損させる恐れがなく、画像読取装置から取り外したコンタクトガラスをそのままの状態で再使用することも可能であり、コンタクトガラスのリサイクル率が向上する。   In addition, it is natural that an opening 50 having a width capable of inserting a stripping tool is required on the side portion of the upper frame 1 corresponding to the interrupted portion, whereby the stripping tool can be inserted into the interrupted portion, There is no risk of scratching or damaging the contact glass when the glass is peeled off from the double-sided adhesive tape, and the contact glass removed from the image reader can be reused as it is. The rate is improved.

また、かかる実施例において、前記画像読取ユニットの往復動方向と直交するコンタクトガラス取付空間の短手辺に位置している途切れ部において、夫々の短手辺に設けた途切れ部が、他側短手辺に設けた途切れ部に対し、短手方向に位置をずらして配置されているために、前記画像読取ユニットの往復動によって生じる空気流の上流側に位置する前記途切れ部の隙間を通った空気流が下流側に位置する途切れ部の隙間に吹き抜け難くなり、かかる空気の吹き抜けに伴う装置内部へのごみ、埃等の微小片の侵入一層抑制される。   Further, in this embodiment, in the discontinuous portions located on the short sides of the contact glass mounting space orthogonal to the reciprocating direction of the image reading unit, the discontinuities provided on the short sides are short on the other side. Since the position is shifted in the short-side direction with respect to the interrupted portion provided on the hand side, the gap passes through the interrupted portion located on the upstream side of the air flow generated by the reciprocating motion of the image reading unit. It becomes difficult for the air flow to blow through the gaps in the discontinuous portions located on the downstream side, and the intrusion of fine pieces such as dust and dust into the apparatus accompanying the blow-through of the air is further suppressed.

又前記途切れ部及びガラス受部は、コンタクトガラス取付空間の短手辺軸中心に対し対称で且つ個数を異ならせて配置されていることによりコンタクトガラス押圧面の押圧荷重が均等に分散できる。   Further, the discontinuity portion and the glass receiving portion are arranged symmetrically with respect to the center of the short side axis of the contact glass mounting space and in a different number so that the pressing load on the contact glass pressing surface can be evenly distributed.

図4に示される実施例は、原稿搬送装置を用いたシートスルー用読取窓としてのスリットガラス03が、コンタクトガラス3の一の短手辺に隣接して設けたために、ガラス受部5をスリットガラス03側の短手辺に設けることはできない。そこで操作盤とカバーヒンジ取り付け部が位置する両長手辺側にガラス受部5を設けて、前記両面粘着テープ4は、図6に示されるように、前記外面板1aの下面外周に沿った全周において長手辺側のガラス受部5と対応する位置に途切れ部4aが形成されている。この場合も途切れ部4aの形成部位は、ガラス受部5の設置位置に合わせ、ガラス受部5の幅より小にしている。   In the embodiment shown in FIG. 4, since the slit glass 03 as a sheet-through reading window using the document conveying device is provided adjacent to one short side of the contact glass 3, the glass receiving portion 5 is slit. It cannot be provided on the short side on the glass 03 side. Therefore, the glass receiving part 5 is provided on both long sides where the operation panel and the cover hinge mounting part are located, and the double-sided adhesive tape 4 is entirely attached along the outer periphery of the lower surface of the outer face plate 1a as shown in FIG. A discontinuous portion 4a is formed at a position corresponding to the glass receiving portion 5 on the long side in the circumference. Also in this case, the part where the interrupted portion 4 a is formed is made smaller than the width of the glass receiving portion 5 in accordance with the installation position of the glass receiving portion 5.

即ち図6に示すように、前記ガラス受5及び途切れ部4aは、前記装置内部の前記画像読取ユニット11の往復動等によって形成される空気流と平行する方向、即ち前記途切れ部4aとともにガラス受部5も、両長手辺に位置し、又前記途切れ部4a及びガラス受部5は、図6に示すように、カバー10のヒンジが位置する奥前側長手辺には、軸中心線を挟んで対称位置に2つ、操作盤21の位置する手前側長手辺では軸中心に1つその両側に2つ計3つ配置されている。
この場合に画像読取ユニット11の往復動方向と対面する短手側には途切れ部4aは存在しない。
That is, as shown in FIG. 6, the glass receiver 5 and the interrupted portion 4a are parallel to the air flow formed by the reciprocating motion of the image reading unit 11 inside the apparatus, that is, the glass receiver together with the interrupted portion 4a. The part 5 is also located on both longitudinal sides, and the cut-off part 4a and the glass receiving part 5 are located on the front longitudinal side where the hinge of the cover 10 is located, with the axial center line interposed therebetween, as shown in FIG. Two in a symmetrical position and one on the long side of the near side where the operation panel 21 is located, one in the center of the axis, and two on both sides are arranged.
In this case, there is no break 4a on the short side facing the reciprocating direction of the image reading unit 11.

本発明の実施例に係るオートフィーダ型原稿自動読取機構を有せずコンタクトガラスガラスのみの画像読取装置の本体フレーム部分の分解斜視図である。1 is an exploded perspective view of a main body frame portion of an image reading apparatus using only contact glass without an automatic feeder-type original automatic reading mechanism according to an embodiment of the present invention. 図1のA―A線断面図である。It is the sectional view on the AA line of FIG. 両面粘着テープとガラス受部の位置関係を示す作用説明図である。It is effect | action explanatory drawing which shows the positional relationship of a double-sided adhesive tape and a glass receiving part. 本発明の実施例に係るオートフィーダ型原稿自動読取機構が搭載可能でコンタクトガラスガラスとともにスリットガラスを有する画像読取装置の本体フレーム部分の分解斜視図である。1 is an exploded perspective view of a main body frame portion of an image reading apparatus in which an auto-feeder type automatic document reading mechanism according to an embodiment of the present invention can be mounted and which includes a contact glass and a slit glass. 図4の画像読取装置の全体構造を示す斜視図である。FIG. 5 is a perspective view showing an overall structure of the image reading apparatus in FIG. 4. 図4における、両面粘着テープとガラス受部の位置関係を示す説明図である。It is explanatory drawing which shows the positional relationship of a double-sided adhesive tape and a glass receiving part in FIG. 従来技術を示す概略図である。It is the schematic which shows a prior art.

符号の説明Explanation of symbols

1 上フレーム
1a 外面板
2 下フレーム
2a 上側開口部
3 コンタクトガラス
3A コンタクトガラス取付空間
4 両面粘着テープ
6、7 嵌合部
8 ヒンジ取り付け部
20 本体フレーム
21 操作盤取り付け部
50 開口
DESCRIPTION OF SYMBOLS 1 Upper frame 1a Outer surface plate 2 Lower frame 2a Upper side opening part 3 Contact glass 3A Contact glass attachment space 4 Double-sided adhesive tape 6, 7 Fitting part 8 Hinge attachment part 20 Main body frame 21 Operation panel attachment part 50 Opening

Claims (9)

CCD及び光学系が組み込まれた画像読取ユニットが所定方向に往復動可能に本体フレーム内に配置され、本体フレーム上面に画像読取用の原稿を載置するコンタクトガラスを具えた画像読取装置であって、
前記本体フレームが、画像読取ユニットが本体長手方向に往復動可能に収納され上側が開口する下フレームと、上面にコンタクトガラス取付空間を有する上フレームとを有し、両上下フレームに夫々設けた嵌合部を介して両者が分離可能に組み付けられるとともに、前記コンタクトガラスの下面に、前記下フレームより突設するガラス受部を設け、更に前記上フレームのコンタクトガラス取付空間の下面外周に沿って貼り着された帯状の粘着材を介してコンタクトガラスが配設されるとともに、該帯状の粘着材は、部分的に接続が途切れた途切れ部を有する断続形態にて前記下面外周に接着され、前記途切れ部と対向する前記コンタクトガラスの下面に、前記下フレームより突設する前記ガラス受部を設けたことを特徴とする画像読取装置。
An image reading device comprising a contact glass on which an image reading unit in which an image reading unit incorporating a CCD and an optical system is reciprocated in a predetermined direction is placed in a main body frame and an image reading document is placed on the upper surface of the main body frame. ,
The main body frame has a lower frame in which the image reading unit is reciprocally movable in the longitudinal direction of the main body and has an upper opening, and an upper frame having a contact glass mounting space on the upper surface. with both via the engaging portion is assembled detachably on the lower surface of the contact glass, the glass receiving portion to protrude from the lower frame is provided, attached further along the underside periphery of the contact glass installation space of the upper frame The contact glass is disposed through the belt-shaped adhesive material that is attached, and the belt-shaped adhesive material is adhered to the outer periphery of the lower surface in an intermittent form having a discontinuous portion in which the connection is partially interrupted. the lower surface of the contact glass opposite to the part, the image reading apparatus is characterized by providing the glass receiving portion to protrude from the lower frame.
前記ガラス受部が、途切れ部両岸の粘着材部を押圧する形状である請求項記載の画像読取装置。 The glass receiving portion, discontinuity image reading apparatus according to claim 1, wherein a shape to press the adhesive portion of the both sides. 前記ガラス受部幅が、途切れ部幅と同等か大である請求項若しくは記載の画像読取装置。 The glass receiving width, the image of claim 1 or 2 wherein the discontinuity width equal to or larger reader. 前記コンタクトガラス取付空間の対向する二辺に位置している途切れ部において、夫々の対向する辺に設けた途切れ部が、他側辺に設けた途切れ部に対し、対応する辺方向に位置をずらして配置されていることを特徴とする請求項1、2若しくは記載の画像読取装置。 In the discontinuous portions located on the two opposite sides of the contact glass mounting space, the discontinuous portions provided on the respective opposite sides are shifted in the corresponding side direction with respect to the discontinuous portions provided on the other side. It is disposed Te image reading apparatus according to claim 1, 2 or 3 wherein. ンタクトガラス取付空間の対向する二辺に位置し、夫々の辺に設けた途切れ部に対応させて前記途切れ部とともにガラス受部も、前記辺方向に位置をずらして配置されていることを特徴とする請求項記載の画像読取装置。 Characterized in that co down tact located in two opposing sides of the glass seating space, glass receptacle together with the discontinuity in correspondence with the interrupted portion provided on the sides of each are also arranged by shifting the positions in the side direction The image reading apparatus according to claim 4 . 記途切れ部及びガラス受部は、コンタクトガラス取付空間の対応する辺中心線に対し対称で且つ個数を異ならせて配置されていることを特徴とする請求項記載の画像読取装置。 Before SL discontinuity and glass receiving part, the image reading apparatus according to claim 4, characterized in that it is arranged and with different number symmetrical with respect to corresponding side center line of the contact glass mounting space. 前記画像読取ユニットの往復動方向と直交するコンタクトガラス取付空間の両短手辺に位置している途切れ部において、夫々の短手辺に設けた途切れ部が、他側短手辺に設けた途切れ部に対し、短手方向に位置をずらして配置されていることを特徴とする請求項記載の画像読取装置。 In the discontinuous portions located on both short sides of the contact glass mounting space orthogonal to the reciprocating direction of the image reading unit, the discontinuities provided in the respective short sides are discontinuous provided in the other short side. The image reading apparatus according to claim 4 , wherein the image reading apparatus is disposed so as to be shifted in a lateral direction with respect to the section. 前記粘着材がテープ状基材の両面に粘着材が塗布された両面粘着テープであることを特徴とする請求項乃至いずれか1記載の画像読取装置。 The adhesive material is an image reading apparatus as claimed in any one claims 1 to 7, characterized in that a double-sided adhesive tape adhesive is applied to both surfaces of the tape-shaped substrate. 前記途切れ部に対応する上フレーム側部に、マイナスドライバ状の剥ぎ取り用具(不図示)を挿入するスリット開口が設けられている請求項乃至いずれか1記載の画像読取装置。 Wherein the frame sides on corresponding to discontinuity, images reader as claimed in any one of claims 1 to 8 slit opening is provided for inserting a screwdriver-like stripping tool (not shown).
JP2004161246A 2003-05-30 2004-05-31 Image reading device Expired - Lifetime JP4235585B2 (en)

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