JP4201332B2 - Paper transport device - Google Patents

Paper transport device Download PDF

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JP4201332B2
JP4201332B2 JP2003315253A JP2003315253A JP4201332B2 JP 4201332 B2 JP4201332 B2 JP 4201332B2 JP 2003315253 A JP2003315253 A JP 2003315253A JP 2003315253 A JP2003315253 A JP 2003315253A JP 4201332 B2 JP4201332 B2 JP 4201332B2
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driven roller
roller
bearing
conveying
driving roller
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JP2005082303A (en
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哲 荒明
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Ricoh Co Ltd
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Ricoh Co Ltd
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Description

本発明は、コピー、ＦＡＸ、プリンタ等に適用され、用紙を一対の搬送ローラによって搬送する用紙搬送装置に関する。 The present invention is, copy, FAX, is applied to a printer or the like, to a sheet conveying apparatus for conveying a sheet by a pair of conveying rollers.

用紙等を搬送する自動用紙搬送装置においては、摩擦係数の高い、例えばゴムローラに樹脂、金属製の従動ローラをスプリング等で加圧させる構成が一般的である。この加圧方法の一つとして、トーションスプリングを従動ローラに直接当接させる構成がある（例えば、特許文献１参照）。 2. Description of the Related Art In an automatic paper conveyance device that conveys paper or the like, a configuration in which a friction coefficient, for example, a rubber roller is pressed with a resin or metal driven roller with a spring or the like is generally used. As one of the pressurizing methods, there is a configuration in which a torsion spring is brought into direct contact with a driven roller (for example, see Patent Document 1).

特開２００１−１８７６５４号公報。JP 2001-187654 A.

ところで、トーションスプリングを従動ローラに直接当接させる構成では、経時の摩耗によって異音が発生する問題がある。この場合、軸受を追加し、軸受にスプリングを当てることで異音の発生は防げるが、組立性の低下といった問題が新たに生じる。   By the way, in the configuration in which the torsion spring is in direct contact with the driven roller, there is a problem that abnormal noise occurs due to wear over time. In this case, an extraneous noise can be prevented by adding a bearing and applying a spring to the bearing, but a new problem such as a decrease in assemblability arises.

用紙がジャムを起こした際のジャム除去性を考慮すると、駆動ローラと従動ローラとのニップは解除可能なことが望ましい。従って、通常、従動ローラは駆動ローラにスプリングによって押しつけられ、接することで位置が決まっているが、ジャム除去時にニップを解除するには、他の抜け止めが必要になる。これは、ジャム除去時にニップを解除しない構成においても同様で、駆動ローラを組みつけるまで従動ローラが規制されていないのでは、組み付け性が劣悪である。そうでるからといって、従動ローラを小径化すると、駆動ローラと従動ローラとのニップと、従動ローラの軸心との距離が短くなるため、通常使用時と駆動ローラがない状態との差が少なく、設計が困難になる。   In consideration of the jam removal property when the paper is jammed, it is desirable that the nip between the driving roller and the driven roller can be released. Therefore, normally, the driven roller is pressed against the driving roller by a spring and is brought into contact with the driven roller to determine its position. However, in order to release the nip at the time of jam removal, another stopper is required. This is the same even in a configuration in which the nip is not released during jam removal. If the driven roller is not restricted until the drive roller is assembled, the assemblability is poor. Even if the diameter of the driven roller is reduced, the distance between the nip between the driving roller and the driven roller and the axis of the driven roller is shortened. Less design becomes difficult.

本発明は前記事情に着目してなされたものであり、その目的とするところは、軸受を介してトーションスプリングを従動ローラに当接させる構成において組立性を向上させることができる用紙搬送装置を提供することにある。 The present invention has been made paying attention to the above circumstances, and an object of the present invention is to provide a sheet conveying apparatus capable of improving the assemblability in a configuration in which a torsion spring is brought into contact with a driven roller via a bearing. There is to do.

前記課題を解決するために、請求項１に記載された発明は、駆動ローラと、この駆動ローラに圧接して連れ回りする従動ローラと、前記駆動ローラと前記従動ローラとの間に向かう用紙の搬送を案内する搬送ガイド板と、前記搬送ガイド板に設けられ且つ用紙の両側を規制する搬送リブと、前記従動ローラの両端に設けられた軸に挿入され且つ前記搬送リブ間に挿入される前記従動ローラの両端をそれぞれ保持する軸受と、前記各軸受の外側面に形成された凸部と、前記搬送リブに形成され且つ前記凸部を介して前記軸受を変位可能に支持するスライド溝と前記搬送リブに支持され且つ前記軸受を前記凸部を介して前記従動ローラと供に前記駆動ローラ側に付勢する作用腕を有する少なくとも１つのトーションスプリングとを有し、前記トーションスプリングは、前記搬送リブに支持された状態で、前記作用腕が前記搬送リブ間に挿入される前記従動ローラの挿入軌跡と交差し、前記スライド溝に支持される前記凸部は、前記従動ローラの中心軸に対して偏心しており、その偏心方向が、前記従動ローラと前記駆動ローラとが圧接した状態で前記従動ローラの中心軸に対して前記駆動ローラと反対側であることを特徴とする。 In order to solve the above-mentioned problem, the invention described in claim 1 is directed to a driving roller, a driven roller that is brought into pressure contact with the driving roller, and a sheet of paper heading between the driving roller and the driven roller. A conveyance guide plate that guides conveyance; a conveyance rib that is provided on the conveyance guide plate and restricts both sides of the paper ; and is inserted into shafts provided at both ends of the driven roller and is inserted between the conveyance ribs. A bearing for holding both ends of the driven roller ; a convex portion formed on the outer surface of each bearing; a slide groove formed on the conveying rib and supporting the bearing displaceably via the convex portion; the and the bearing is supported by the conveyance ribs through the protrusions possess at least one torsion spring having a functional arm for biasing said drive roller side subjected to the driven roller, before Symbol toe ® down spring, in a state of being supported by the conveying ribs, intersect the insertion path of the driven roller in which the functional arm is inserted between the conveying ribs, the convex portion supported to the slide groove, the driven roller The eccentric direction is opposite to the driving roller with respect to the central axis of the driven roller in a state where the driven roller and the driving roller are in pressure contact with each other. .

また、請求項２に記載された発明は、請求項１に記載された発明において、前記従動ローラと前記駆動ローラとが圧接した状態で前記スライド溝に当接する前記凸部は、前記スライド溝の形状に沿う形状を成していることを特徴とする。 Further, in the invention described in claim 2 , in the invention described in claim 1, the convex portion that contacts the slide groove in a state where the driven roller and the driving roller are in pressure contact with each other is provided on the slide groove. It is characterized by forming a shape along the shape .

請求項１に記載された発明によれば、前記トーションスプリングが前記搬送リブに支持された状態で、前記トーションスプリングの前記作用腕が前記搬送リブ間に挿入される前記従動ローラの挿入軌跡と交差するようになっているため、作業者は、トーションスプリングの前記作用腕の位置を気にすることなく、軸受が従動ローラから抜けないようにセットするだけで済み、組立性が良くなる。すなわち、軸受を追加したことによる組立性の低下を防止できる。   According to the first aspect of the present invention, the working arm of the torsion spring intersects the insertion locus of the driven roller inserted between the conveying ribs in a state where the torsion spring is supported by the conveying ribs. Therefore, the operator only needs to set the bearing so that it does not come off the driven roller without worrying about the position of the working arm of the torsion spring, and the assemblability is improved. That is, it is possible to prevent a decrease in assemblability due to the addition of the bearing.

また、請求項１に記載された発明によれば、方向性のある前記軸受を逆向きにセットすると、駆動ローラと従動ローラとが圧接しなくなるため、作業者は誤セットを容易に認識でき、組立を正確に行なうことができる。 Further, according to the invention described in claim 1, setting the bearing with a rectangular tropism in reverse, since the driving roller and the driven roller is not pressed, the operator can easily recognize the set false Assembling can be performed accurately.

請求項２に記載された発明によれば、請求項１に記載された発明と同様の作用効果が得られるとともに、方向性のある前記軸受を逆向きにセットすると、軸受の形状がスライド溝の形状に沿わないため、組立性が悪くなる。そのため、作業者は誤セットを容易に認識でき、組立を正確に行なうことができる。すなわち、対称形状ではない軸受を組む際、正規の方向では組み易く、誤った方向では組み難くすることで、作業者の注意を促し、その結果、組み付けミスの発生率を下げることができる。 According to the second aspect of the invention, the same effect as that of the first aspect of the invention can be obtained, and when the directional bearing is set in the opposite direction, the shape of the bearing becomes the slide groove. Since it does not conform to the shape, the assemblability deteriorates. Therefore, the operator can easily recognize an erroneous set and can perform assembly accurately. That is, when assembling a bearing that is not symmetrical, it is easy to assemble in the normal direction and difficult to assemble in the wrong direction, so that the operator's attention can be urged, and as a result, the incidence of assembly errors can be reduced.

以下、添付図面を参照しながら、本発明の一実施形態について説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

図１には、本発明の一実施形態に係る用紙搬送装置Ａが概略的に示されている。図示のように、この用紙搬送装置Ａは、駆動ローラ１と、この駆動ローラ１に圧接して連れ回りする従動ローラ２とを備えている。駆動ローラ１は図示しない駆動源によって回転する。また、図２に示されるように、用紙搬送装置Ａは、駆動ローラ１と従動ローラ２との間に向かう用紙の搬送を案内する搬送ガイド板５と、搬送ガイド板５に設けられ且つ用紙の両側を規制する搬送リブ５ａとを備えている。 FIG. 1 schematically shows a sheet conveying apparatus A according to an embodiment of the present invention. As shown in the figure, the sheet conveying apparatus A includes a driving roller 1 and a driven roller 2 that rotates in contact with the driving roller 1. The driving roller 1 is rotated by a driving source (not shown). Further, as shown in FIG. 2, the paper feeding apparatus A includes a sheet guide 5 for guiding the conveyance of the sheet towards between the drive roller 1 and driven roller 2, the and the sheet provided in the transfer guide plate 5 And a transport rib 5a for restricting both sides.

従動ローラ２の両端に設けられた軸２ａには軸受３が挿入されており、これらの軸受３は、搬送リブ５ａ間に挿入される従動ローラ２を保持する。従動ローラ２は、トーションスプリング４によって上方に加圧されることで、駆動ローラ１に圧接して連れ回りする。これらローラ対２，３のニップに入った用紙は、これらのローラ回転によって搬送される。   Bearings 3 are inserted into shafts 2a provided at both ends of the driven roller 2, and these bearings 3 hold the driven rollers 2 inserted between the conveying ribs 5a. The driven roller 2 is pressed upward by the torsion spring 4 so as to be brought into pressure contact with the driving roller 1. The sheet that has entered the nip between these roller pairs 2 and 3 is conveyed by the rotation of these rollers.

軸受３と従動ローラ２は、搬送ガイド板５の搬送リブ５ａのスパンによってスラスト方向を規制されている。また、軸受３は、搬送ガイド板５の搬送リブ５ａに設けられたスライド溝５ｂによって上下方向にのみ変位可能に保持されており、駆動ローラ１に従動ローラ２が突き当たることで位置が決まる。   The thrust direction of the bearing 3 and the driven roller 2 is regulated by the span of the conveyance rib 5 a of the conveyance guide plate 5. Further, the bearing 3 is held so as to be displaceable only in the vertical direction by a slide groove 5 b provided in the transport rib 5 a of the transport guide plate 5, and the position is determined by the driving roller 1 abutting the driven roller 2.

トーションスプリング４は、搬送ガイド板５の搬送リブ５ａに設けられた支持軸５ｃにバネ部（作用腕）４ａが案内されており、胴体部４ｂが搬送ガイド板５のバネ用リブ５ｄに受けられるようになっている。なお、トーションスプリング４は、別体でも良く、例えば図２の一点鎖線枠中に示されるように、それぞれがバネ部４ａを有する一対のスプリング部４Ａ，４Ｂから成っていても良い。   In the torsion spring 4, a spring portion (working arm) 4 a is guided by a support shaft 5 c provided on the conveyance rib 5 a of the conveyance guide plate 5, and the body portion 4 b is received by the spring rib 5 d of the conveyance guide plate 5. It is like that. Note that the torsion spring 4 may be a separate body, and may be composed of a pair of spring portions 4A and 4B each having a spring portion 4a as shown in a one-dot chain line frame in FIG.

なお、搬送リブ５ａに形成されたスライド溝５ｂには、駆動ローラ１側への軸受３の抜けを防止する抜け止め部としての樹脂性の弾性爪３０が設けられている。   The slide groove 5b formed in the conveying rib 5a is provided with a resinous elastic claw 30 as a retaining portion for preventing the bearing 3 from coming off to the drive roller 1 side.

また、図４に明確に示されるように、本実施形態において、トーションスプリング４は、搬送リブ５ａに支持された状態で、バネ部４ａが搬送リブ５ａ間に挿入される従動ローラ２の挿入軌跡と交差するようになっている。また、図４に明確に示されるように、本実施形態において、スライド溝５ｂに支持される軸受３の中心軸Ｏ１は、従動ローラ２の中心軸Ｏ２に対して偏心しており、その偏心方向は、従動ローラ２と駆動ローラ１とが圧接した状態で従動ローラ２の中心軸Ｏ２に対して駆動ローラ１と反対側となっている。更に、図４に明確に示されるように、本実施形態において、従動ローラ２と駆動ローラ１とが圧接した状態でスライド溝５ｂに当接する軸受３の部位３ａは、スライド溝５ｂの形状に沿う形状（例えば、テーパ、Ｃ面、Ｒ面…逆側の稜線３ｂは角のままにしておく）を成している。   Further, as clearly shown in FIG. 4, in this embodiment, the torsion spring 4 is supported by the conveying rib 5a, and the insertion locus of the driven roller 2 in which the spring portion 4a is inserted between the conveying ribs 5a. Intersects with Further, as clearly shown in FIG. 4, in the present embodiment, the center axis O1 of the bearing 3 supported by the slide groove 5b is eccentric with respect to the center axis O2 of the driven roller 2, and the eccentric direction is The driven roller 2 and the driving roller 1 are opposite to the driving roller 1 with respect to the central axis O2 of the driven roller 2 in a state where the driven roller 2 and the driving roller 1 are in pressure contact with each other. Further, as clearly shown in FIG. 4, in this embodiment, the portion 3a of the bearing 3 that contacts the slide groove 5b in a state where the driven roller 2 and the drive roller 1 are in pressure contact with each other follows the shape of the slide groove 5b. It has a shape (for example, taper, C surface, R surface... Ridge line 3b on the opposite side remains a corner).

次に、上記構成の従動ローラ２の組立手順について説明する。   Next, the assembly procedure of the driven roller 2 having the above-described configuration will be described.

まず、トーションスプリング４を支持軸５ｃに挿入した後、従動ローラ２の両端に挿入した軸受３をスライド溝５ｂにセットする。この際、トーションスプリング４のバネ部４ａが従動ローラ２の挿入軌跡上にきていないと、作業者はトーションスプリング４のバネ部４ａを下げながら、軸受３と従動ローラ２とを保持しつつセットしなければならなくなり、組立性が悪い。本実施形態では、従動ローラ２の挿入軌跡に交差するようにトーションスプリング４のバネ部４ａが設定されているため、組立性が向上する。   First, after inserting the torsion spring 4 into the support shaft 5c, the bearings 3 inserted at both ends of the driven roller 2 are set in the slide groove 5b. At this time, if the spring portion 4 a of the torsion spring 4 is not on the insertion locus of the driven roller 2, the operator sets the bearing 3 and the driven roller 2 while lowering the spring portion 4 a of the torsion spring 4. As a result, assembly is poor. In this embodiment, since the spring portion 4a of the torsion spring 4 is set so as to intersect the insertion locus of the driven roller 2, the assemblability is improved.

また、搬送ガイド板５の搬送リブ５ａに従動ローラ２の保持機能を設けると、搬送パスのレイアウトの制約、従動ローラ２の小径化等の影響を受ける。搬送ガイド板５の搬送リブ５ａの軸受抜け防止爪３０と軸受３とのクリアランスを確保するために、スライド溝５ｂに嵌合する軸受３の凸部を従動ローラ２の中心からずらすことで可能になるが、軸受３が上下対象ではなくなると、組立時の誤セットが懸念される。本実施形態では、前記凸部の下側の長さを長くし、逆向きにセットすると、駆動ローラ１と従動ローラ２とが圧接しなくなるように設定する（図５参照）ことで、組み付けミスが発見できるようにする。   In addition, when the holding function of the driven roller 2 is provided, the conveyance guide plate 5 is affected by restrictions on the layout of the conveyance path, reduction in the diameter of the driven roller 2, and the like. It is possible by shifting the convex portion of the bearing 3 fitted in the slide groove 5b from the center of the driven roller 2 in order to ensure the clearance between the bearing slip-off preventing claw 30 of the conveyance rib 5a of the conveyance guide plate 5 and the bearing 3. However, if the bearing 3 is no longer the object of up and down, there is a concern about erroneous setting during assembly. In this embodiment, if the lower length of the convex portion is lengthened and set in the opposite direction, the driving roller 1 and the driven roller 2 are set so as not to come into pressure contact (see FIG. 5). To be found.

また、本実施形態では、軸受３の前記凸部の下側のみを角ＲあるいはＣ面に形成し、逆側の稜線は角のままにしておく。これは、誤った方向の組立性を悪くすることで作業者の注意を促し、組み付けミスの発生の危険度を低減するためである。   In the present embodiment, only the lower side of the convex portion of the bearing 3 is formed on the corner R or C surface, and the opposite ridge line is left corner. This is because the assemblability in the wrong direction is deteriorated to alert the operator and reduce the risk of assembly errors.

以上説明したように、本実施形態の用紙搬送装置Ａにおいて、トーションスプリング４は、搬送リブ５ａに支持された状態で、バネ部４ａが搬送リブ５ａ間に挿入される従動ローラ２の挿入軌跡と交差するようになっている。そのため、作業者は、トーションスプリング４のバネ部４ａの位置を気にすることなく、軸受３が従動ローラ２から抜けないようにセットするだけで済み、組立性が良くなる。すなわち、軸受３を追加したことによる組立性の低下を防止できる。 As described above, in the paper conveying apparatus A of the present embodiment, the torsion spring 4 is supported by the conveying rib 5a and the insertion locus of the driven roller 2 in which the spring portion 4a is inserted between the conveying ribs 5a. It is designed to intersect. Therefore, the operator only needs to set the bearing 3 so that it does not come out of the driven roller 2 without worrying about the position of the spring portion 4a of the torsion spring 4, and the assemblability is improved. That is, it is possible to prevent a decrease in assemblability due to the addition of the bearing 3.

また、本実施形態において、スライド溝５ｂに支持される軸受３の中心軸Ｏ１は、従動ローラの２の中心軸Ｏ２に対して偏心しており、その偏心方向は、従動ローラ２と駆動ローラ１とが圧接した状態で従動ローラ２の中心軸Ｏ２に対して駆動ローラ１と反対側となっている。このような構成では、方向性のある軸受３を逆向きにセットすると、駆動ローラ１と従動ローラ２とが圧接しなくなる（図５参照）ため、作業者は誤セットを容易に認識でき、組立を正確に行なうことができる。   Further, in the present embodiment, the center axis O1 of the bearing 3 supported by the slide groove 5b is eccentric with respect to the center axis O2 of the driven roller 2, and the eccentric directions thereof are the driven roller 2, the drive roller 1, and Is in the opposite side of the driving roller 1 with respect to the central axis O2 of the driven roller 2 in a state of being in pressure contact. In such a configuration, when the directional bearing 3 is set in the reverse direction, the driving roller 1 and the driven roller 2 are not pressed against each other (see FIG. 5), so that the operator can easily recognize the erroneous setting and assemble. Can be performed accurately.

また、本実施形態において、従動ローラ２と駆動ローラ１とが圧接した状態でスライド溝５ｂに当接する軸受３の部位３ａは、スライド溝５ｂの形状に沿う形状を成している。このような構成では、方向性のある軸受３を逆向きにセットすると、軸受３の形状がスライド溝５ｂの形状に沿わないため、組立性が悪くなる。そのため、作業者は誤セットを容易に認識でき、組立を正確に行なうことができる。すなわち、対称形状ではない軸受３を組む際、正規の方向では組み易く、誤った方向では組み難くすることで、作業者の注意を促し、その結果、組み付けミスの発生率を下げることができる。   In the present embodiment, the portion 3a of the bearing 3 that contacts the slide groove 5b in a state where the driven roller 2 and the drive roller 1 are in pressure contact with each other has a shape along the shape of the slide groove 5b. In such a configuration, when the directional bearing 3 is set in the reverse direction, the shape of the bearing 3 does not conform to the shape of the slide groove 5b, so that the assemblability deteriorates. Therefore, the operator can easily recognize an erroneous set and can perform assembly accurately. That is, when assembling the bearing 3 that is not symmetrical, it is easy to assemble in the normal direction and difficult to assemble in the wrong direction, so that the operator's attention can be urged, and as a result, the incidence of assembly errors can be reduced.

本発明の一実施形態に係る用紙搬送装置の概略図である。1 is a schematic view of a paper transport device according to an embodiment of the present invention. 図１の用紙搬送装置の要部の拡大斜視図（分解状態）である。FIG. 2 is an enlarged perspective view (disassembled state) of a main part of the sheet conveying device of FIG. 1. 図１の用紙搬送装置の要部の拡大斜視図（組立状態）である。FIG. 2 is an enlarged perspective view (assembled state) of a main part of the sheet conveying device of FIG. 1. 従動ローラを正しく組み付けた時の断面図である。It is sectional drawing when a driven roller is assembled | attached correctly. 従動ローラを誤って逆に組み付けた時の断面図である。It is sectional drawing when a driven roller is assembled | reversely mistakenly reversed.

符号の説明Explanation of symbols

Ａ 用紙搬送装置
１ 駆動ローラ
２ 従動ローラ
３ 軸受
４ トーションスプリング
４ａ バネ部（作用腕）
５ 搬送ガイド板
５ａ 搬送リブ
５ｂ スライド溝 A sheet conveying device 1 driving roller 2 driven roller 3 bearing 4 torsion spring 4a spring portion (working arm)
5 Conveying guide plate 5a Conveying rib 5b Slide groove

Claims (2)

駆動ローラと、
この駆動ローラに圧接して連れ回りする従動ローラと、
前記駆動ローラと前記従動ローラとの間に向かう用紙の搬送を案内する搬送ガイド板と、
前記搬送ガイド板に設けられ且つ用紙の両側を規制する搬送リブと、
前記従動ローラの両端に設けられた軸に挿入され且つ前記搬送リブ間に挿入される前記従動ローラの両端をそれぞれ保持する軸受と、
前記各軸受の外側面に形成された凸部と、
前記搬送リブに形成され且つ前記凸部を介して前記軸受を変位可能に支持するスライド溝と
前記搬送リブに支持され且つ前記軸受を前記凸部を介して前記従動ローラと供に前記駆動ローラ側に付勢する作用腕を有する少なくとも１つのトーションスプリングとを有し、
前記トーションスプリングは、前記搬送リブに支持された状態で、前記作用腕が前記搬送リブ間に挿入される前記従動ローラの挿入軌跡と交差し、
前記スライド溝に支持される前記凸部は、前記従動ローラの中心軸に対して偏心しており、その偏心方向が、前記従動ローラと前記駆動ローラとが圧接した状態で前記従動ローラの中心軸に対して前記駆動ローラと反対側であることを特徴とする用紙搬送装置。 A driving roller;
A driven roller that rotates in contact with the driving roller;
A conveyance guide plate for guiding conveyance of the sheet between the driving roller and the driven roller;
A transport rib provided on the transport guide plate and restricting both sides of the paper ;
Bearings that are inserted into shafts provided at both ends of the driven roller and hold both ends of the driven roller inserted between the conveying ribs,
A convex portion formed on the outer surface of each bearing;
A slide groove formed on the conveying rib and supporting the bearing through the convex portion so as to be displaceable, and supported on the conveying rib and supporting the bearing via the convex portion with the driven roller on the driving roller side possess at least one torsion spring having a functional arm for biasing,
Before SL torsion spring is in a state of being supported by the conveying ribs, it intersects the insertion path of the driven roller in which the functional arm is inserted between the conveying ribs,
The convex portion supported by the slide groove is eccentric with respect to the central axis of the driven roller, and the eccentric direction of the convex portion is on the central axis of the driven roller in a state where the driven roller and the driving roller are in pressure contact with each other. On the other hand , the sheet conveying apparatus is opposite to the driving roller . 前記従動ローラと前記駆動ローラとが圧接した状態で前記スライド溝に当接する前記凸部は、前記スライド溝の形状に沿う形状を成していることを特徴とする請求項１記載の用紙搬送装置。 2. The paper conveying apparatus according to claim 1 , wherein the convex portion that contacts the slide groove in a state where the driven roller and the driving roller are in pressure contact with each other has a shape that follows the shape of the slide groove. .
JP2003315253A 2003-09-08 2003-09-08 Paper transport device Expired - Fee Related JP4201332B2 (en)

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JP2009023752A (en) * 2007-07-18 2009-02-05 Kyocera Mita Corp Paper discharging device and image forming device equipped with the same
JP5272468B2 (en) * 2008-03-25 2013-08-28 富士ゼロックス株式会社 Spring mounting structure and image forming apparatus
JP5195222B2 (en) * 2008-09-25 2013-05-08 富士ゼロックス株式会社 Sheet transport device
JP6051932B2 (en) * 2013-02-26 2016-12-27 株式会社リコー Paper guide device and image forming apparatus

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JP2846724B2 (en) * 1990-10-19 1999-01-13 株式会社リコー Transfer paper transport roller
JPH0748047A (en) * 1993-08-03 1995-02-21 Ricoh Co Ltd Paper transfer guide unit for image recording device
JP3717086B2 (en) * 1995-11-17 2005-11-16 シチズンシービーエム株式会社 Thermal printer head mechanism
JP2001187654A (en) * 1999-12-28 2001-07-10 Matsushita Electric Ind Co Ltd Roller unit adjusting presser force and sheet material carrier mechanism in image formation device provided therewith
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