JP2009234676A - Medium carrying device and recording device - Google Patents

Medium carrying device and recording device Download PDF

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JP2009234676A
JP2009234676A JP2008079974A JP2008079974A JP2009234676A JP 2009234676 A JP2009234676 A JP 2009234676A JP 2008079974 A JP2008079974 A JP 2008079974A JP 2008079974 A JP2008079974 A JP 2008079974A JP 2009234676 A JP2009234676 A JP 2009234676A
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path
medium
switching member
paper
transport path
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Kazumasa Harada
和政 原田
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Seiko Epson Corp
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Seiko Epson Corp
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  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Registering Or Overturning Sheets (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carrying device, in which posture of a path switching member disposed at a position where a plurality of carrying paths intersect is easily changed through a travelling force of a paper sheet. <P>SOLUTION: The medium carrying device has the path switching member 30 disposed at the intersection of: a first carrying path feeding a paper sheet P from a paper cassette 11, and curving and reversing the paper sheet P; and a second carrying path feeding the recorded paper sheet P from a recording means 4 to a reversing unit 7. The path switching member 30 switches between a first state and a second state. In the first state, the path switching member 30 oscillates around an oscillation shaft 30a to close the first carrying path by own weight, and guides the paper sheet P to the second carrying path. In the second state, the leading edge of the paper sheet traveling in the first carrying path pushes up the path switching member 30 to open the first carrying path. The oscillation shaft 30a of the path switching member 30 is disposed at a position separated from a curved path of the first carrying path in an outer direction of the curved path. Therefore, the leading edge of the paper sheet traveling in the first carrying path easily pushes up the path switching member 30 with small force. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ファクシミリやプリンタ等に代表される記録装置において媒体を搬送する媒体搬送装置、およびこれを備えた記録装置に関する。   The present invention relates to a medium conveying apparatus that conveys a medium in a recording apparatus represented by a facsimile, a printer, and the like, and a recording apparatus including the medium conveying apparatus.

ファクシミリやプリンタ等に代表される記録装置においては、特許文献１に示されるように用紙の両面に記録が可能なものがあり、この様な記録装置では用紙を用紙カセットなどから送り出して搬送する用紙搬送経路の他に、用紙を反転させる為の用紙搬送経路を備え、即ち複数の用紙搬送経路を備えている。複数の用紙搬送経路が交わる位置には経路切換部材が配置されており、この経路切換部材により、用紙搬送経路の切り換えを行うようになっている。
特開２００７−２５３４６７号公報 Some recording apparatuses represented by facsimiles, printers, and the like are capable of recording on both sides of a sheet as disclosed in Patent Document 1. In such a recording apparatus, a sheet is fed from a sheet cassette and conveyed. In addition to the transport path, a paper transport path for reversing the paper is provided, that is, a plurality of paper transport paths are provided. A path switching member is disposed at a position where a plurality of sheet conveying paths intersect, and the sheet conveying path is switched by this path switching member.
JP 2007-253467 A

用紙搬送経路の切り換えを行う経路切換部材は、モータなどの動力源により強制的に切換動作を実行させるように構成することができるほか、自重によって所定の姿勢を維持することで用紙搬送経路の第１選択状態を維持し、用紙搬送経路を進む用紙によって押し上げられることで用紙搬送経路の第２選択状態をとるように、即ちモータなどの動力源を利用しない構成を採用することもできる。   The path switching member for switching the paper transport path can be configured to forcibly execute the switching operation by a power source such as a motor, and can maintain the predetermined posture by its own weight to thereby change the number of the paper transport path. It is also possible to adopt a configuration in which the first selection state is maintained and the second selection state of the paper transport path is taken by being pushed up by the paper traveling on the paper transport path, that is, a power source such as a motor is not used.

この様な構成の場合、モータなどの動力源を利用しない為装置の小型化及び低コスト化を図ることができるが、用紙搬送経路が正しく切り換えられる為には、経路切換部材が、用紙搬送経路を進む用紙から受ける力によって容易に姿勢変化する必要がある。しかしながら従来の記録装置においては、この様な経路切換部材の姿勢変化の容易性については必ずしも十分に担保されていなかった。   In such a configuration, since a power source such as a motor is not used, it is possible to reduce the size and cost of the apparatus. However, in order to correctly switch the paper transport path, the path switching member is provided with a paper transport path. It is necessary to change the posture easily by the force received from the paper traveling through. However, in the conventional recording apparatus, the ease of changing the posture of such a path switching member has not always been sufficiently ensured.

そこで本発明はこの様な状況に鑑み成されたものであり、その目的は、複数の用紙搬送経路が交わる位置に配置される経路切換部材が、用紙が進む力を介してより一層容易に姿勢変化することのできる搬送装置を提供することにある。   Accordingly, the present invention has been made in view of such a situation, and an object of the present invention is to make it easier for the path switching member disposed at a position where a plurality of paper transport paths intersect to be more easily positioned through the force of paper advancement. It is to provide a transfer device that can change.

上記課題を解決するために、本発明の第１の態様に係る媒体搬送装置は、媒体を湾曲させて搬送する第１搬送経路と、前記第１搬送経路と交わる第２搬送経路と、前記第１搬送経路と前記第２搬送経路とが交わる位置に配置され、揺動軸を中心に揺動することにより、自重によって前記第１搬送経路を塞ぐとともに前記第２搬送経路に媒体を案内する第１状態と、前記第１搬送経路内を進む媒体により押し上げられて前記第１搬送経路を開放する第２状態と、を切り換える経路切換部材と、を備え、前記経路切換部材の揺動軸が、前記第１搬送経路の湾曲経路から、当該湾曲経路の外側方向に離間した場所に配置されていることを特徴とする。   In order to solve the above-described problem, a medium transport apparatus according to a first aspect of the present invention includes a first transport path for curving and transporting a medium, a second transport path that intersects the first transport path, and the first transport path. The first conveying path and the second conveying path are arranged at a position where the second conveying path intersects, and the first conveying path is blocked by its own weight by swinging about the swinging shaft and the medium is guided to the second conveying path. A path switching member that switches between a first state and a second state in which the first transport path is released by being pushed up by a medium traveling in the first transport path, and the swing shaft of the path switching member is It is arrange | positioned in the place spaced apart from the curved path | route of the said 1st conveyance path | route to the outward direction of the said curved path | route.

本態様によれば、経路切換部材は、その揺動軸が、第１搬送経路の湾曲経路から、当該湾曲経路の外側方向に離間した場所に配置されているので、第１搬送経路を進み経路切換部材にその先端が当接する媒体は、経路切換部材の揺動軸から離間した位置で経路切換部材に当接することができ、これにより経路切換部材を容易に押し上げることが可能となる。即ち、経路切換部材が、媒体が進む力を介してより一層容易に姿勢変化することができる。   According to this aspect, since the path switching member is disposed at a position where the swing axis is separated from the curved path of the first transport path in the outer direction of the curved path, the path switching member is advanced along the first transport path. The medium whose tip abuts against the switching member can abut on the path switching member at a position separated from the swinging shaft of the path switching member, and thus the path switching member can be easily pushed up. That is, the posture of the path switching member can be changed more easily through the force that the medium travels.

本発明の第２の態様に係る媒体搬送装置は、第１の態様において、前記経路切換部材において前記第１搬送経路を形成する側、及び前記第２搬送経路を形成する側が、媒体の搬送方向に沿って直線状に形成されていることを特徴とする。   The medium transport apparatus according to a second aspect of the present invention is the medium transport apparatus according to the first aspect, wherein a side of the path switching member that forms the first transport path and a side that forms the second transport path are in the medium transport direction. It is characterized by being formed along a straight line.

本態様によれば、経路切換部材において第１搬送経路を形成する側、及び第２搬送経路を形成する側が、媒体の搬送方向に沿って直線状に形成されているので、経路切換部材の寸法精度管理が容易となる。   According to this aspect, since the side forming the first transport path and the side forming the second transport path in the path switching member are formed linearly along the medium transport direction, the dimensions of the path switching member Accuracy management becomes easy.

本発明の第３の態様に係る媒体搬送装置は、第１のまたは第２の態様において、前記第１搬送経路が、媒体を収容する媒体カセットから送り出された媒体を前記媒体カセットからの送り出し方向とは逆方向に向きを変えて下流側へ送る湾曲反転経路であり、前記第２搬送経路が、媒体を直線的に搬送する直線経路であることを特徴とする。   In the medium transport apparatus according to the third aspect of the present invention, in the first or second aspect, the first transport path feeds the medium sent out from the medium cassette containing the medium from the medium cassette. Is a curved reversal path that changes its direction in the opposite direction and sends it to the downstream side, and the second transport path is a straight path that transports the medium linearly.

本態様によれば、第１搬送経路としての湾曲反転経路と、第２搬送経路としての直線経路と、が交わる位置に配置された経路切換部材が、上記第１の態様の作用効果により、第１搬送経路を進む媒体によって容易に姿勢変化することができる。   According to this aspect, the path switching member disposed at the position where the curved reversal path as the first transport path and the straight path as the second transport path intersect is obtained by the function and effect of the first aspect. The posture can be easily changed by the medium traveling on one transport path.

本発明の第４の態様に係る記録装置は、媒体に記録を行う記録手段と、第１から第３の態様のいずれかに係る媒体搬送装置と、を備えたことを特徴とする。本態様によれば、記録装置において、上記第１から第３の態様と同様な作用効果を得ることができる。   A recording apparatus according to a fourth aspect of the present invention includes a recording unit that performs recording on a medium, and a medium conveying apparatus according to any one of the first to third aspects. According to this aspect, in the recording apparatus, it is possible to obtain the same operational effects as in the first to third aspects.

以下、図１乃至図４を参照しつつ本発明の一実施形態について説明する。図１は本発明に係る「記録装置」の一実施形態であるインクジェットプリンタ（以下「プリンタ」と言う）１の用紙搬送経路を示す側断面図、図２は図１の経路切換部材３０周辺の拡大図、図３は経路切換部材３０の斜視図、図４は反転ユニット７の正面図である。   Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side sectional view showing a sheet conveyance path of an ink jet printer (hereinafter referred to as “printer”) 1 which is an embodiment of a “recording apparatus” according to the present invention. FIG. FIG. 3 is an enlarged view, FIG. 3 is a perspective view of the path switching member 30, and FIG. 4 is a front view of the reversing unit 7.

尚、図１はプリンタ１の用紙搬送経路上に配置されるローラを図示する為に、ほぼ全てのローラを同一面上に描いているが、その奥行き方向（図１の紙面表裏方向）の位置は必ずしも一致しているとは限らない（一致している場合もある）。   Note that FIG. 1 illustrates the rollers arranged on the paper conveyance path of the printer 1 so that almost all the rollers are drawn on the same surface, but the position in the depth direction (the front and back sides of the paper in FIG. 1). Do not necessarily match (sometimes match).

以下、図１を参照しつつプリンタ１の全体構成について概説する。プリンタ１は、装置底部に給送装置２を備え、当該給送装置２から、「媒体」の一例としての被記録媒体（主として単票紙である記録用紙：以下「用紙Ｐ」と言う）を１枚ずつ給送し、記録手段４において記録（インクジェット記録）を行い、装置前方側（図１において右側）に設けられた図示しない排紙スタッカへ向けて排出される構成を備えている。   The overall configuration of the printer 1 will be outlined below with reference to FIG. The printer 1 includes a feeding device 2 at the bottom of the device, and from the feeding device 2, a recording medium as an example of a “medium” (mainly recording paper that is cut paper: hereinafter referred to as “paper P”). Each sheet is fed one by one, and recording (inkjet recording) is performed by the recording means 4 and discharged toward a sheet discharge stacker (not shown) provided on the front side of the apparatus (right side in FIG. 1).

またプリンタ１は装置後部に反転ユニット７を着脱自在に備えており、最初に記録の行われた用紙Ｐの第１面に対し反対側の第２面が記録ヘッド４２と対向するよう湾曲反転させ、これにより用紙Ｐの両面に記録が実行可能となっている。以上によりプリンタ１は、記録手段４に至るまでの用紙Ｐの搬送経路を複数備え、後述する経路切換部材３０の姿勢切り換えや、搬送経路中に設けられる媒体搬送用ローラの正転／逆転切換を行うことで、用紙搬送経路を切り換えるようになっている。   In addition, the printer 1 is provided with a reversing unit 7 at the rear of the apparatus so as to be detachable. The reversing unit 7 is curved and reversed so that the second surface opposite to the first surface of the first recording sheet P faces the recording head 42. As a result, recording can be performed on both sides of the paper P. As described above, the printer 1 has a plurality of conveyance paths for the sheet P up to the recording unit 4, and switches the posture of the path switching member 30 to be described later, and performs forward / reverse switching of the medium conveyance rollers provided in the conveyance path. By doing so, the paper transport path is switched.

尚、プリンタ１は用紙Ｐに記録を行う記録装置であり、記録手段４をその構成要素とするが、記録手段４を除いたプリンタ１の構成群、即ち用紙Ｐを搬送する構成群が、本発明に係る媒体搬送装置を構成する。   The printer 1 is a recording device for recording on the paper P, and the recording means 4 is a constituent element thereof. The medium conveying apparatus according to the invention is configured.

以下、用紙搬送経路上の構成要素について更に詳説する。
給送装置２は、用紙カセット１１と、ピックアップローラ１６と、ガイドローラ２０と、分離手段２１と、を備えている。
装置前方側から装着及び取り外し可能な用紙カセット１１には複数枚の用紙Ｐを積層状態でセット可能であり、図示を省略するエッジガイドによって収容された用紙Ｐが給送位置に位置決めされるようになっている。 Hereinafter, the components on the paper transport path will be described in more detail.
The feeding device 2 includes a paper cassette 11, a pickup roller 16, a guide roller 20, and a separating unit 21.
A plurality of sheets P can be set in a stacked state in the sheet cassette 11 that can be loaded and removed from the front side of the apparatus, and the sheet P accommodated by an edge guide (not shown) is positioned at the feeding position. It has become.

図示しないモータによって回転駆動されるピックアップローラ１６は、揺動軸１８を中心に揺動する揺動部材１７に設けられており、用紙カセット１１にセットされた用紙Ｐの最上位のものと接して回転することにより、当該最上位の用紙Ｐを用紙カセット１１から送り出す。   A pickup roller 16 that is rotationally driven by a motor (not shown) is provided on a swinging member 17 that swings around a swinging shaft 18, and is in contact with the uppermost one of the sheets P set in the sheet cassette 11. By rotating, the uppermost sheet P is sent out from the sheet cassette 11.

用紙カセット１１にセットされた用紙Ｐの先端と対向する位置には分離斜面１２が配置されており、ピックアップローラ１６の回転により送り出された用紙Ｐの先端が分離斜面１２に摺接しつつ下流側に進むことで、次位以降の用紙Ｐとの予備的な分離が行われる。   A separation slope 12 is disposed at a position facing the leading edge of the paper P set in the paper cassette 11, and the leading edge of the paper P sent out by the rotation of the pickup roller 16 is slidably contacted with the separation slope 12 toward the downstream side. By proceeding, preliminary separation from the next and subsequent sheets P is performed.

分離斜面１２の下流側には自由回転可能なガイドローラ２０が設けられ、このガイドローラ２０の下流側には、分離ローラ２２と駆動ローラ２３とを備えて構成された分離手段２１が設けられている。   A free-rotating guide roller 20 is provided on the downstream side of the separation slope 12, and a separation means 21 including a separation roller 22 and a driving roller 23 is provided on the downstream side of the guide roller 20. Yes.

分離ローラ２２は、外周面が弾性材によって形成されるとともに駆動ローラ２３と圧接可能に設けられ、且つ、トルクリミッタ機構により、所定の回転抵抗が与えられた状態に設けられている。従って重送されようとする次位以降の用紙Ｐが、当該分離ローラ２２と駆動ローラ２３との間で止められ、即ち重送が防止される様になっている。尚、駆動ローラ２３は図示しないモータにより用紙Ｐを下流側へ送る方向に回転駆動される。   The separation roller 22 has an outer peripheral surface formed of an elastic material and is provided so as to be able to come into pressure contact with the drive roller 23. The separation roller 22 is provided in a state where a predetermined rotational resistance is given by a torque limiter mechanism. Accordingly, the next and subsequent sheets P to be double fed are stopped between the separation roller 22 and the driving roller 23, that is, double feeding is prevented. The driving roller 23 is rotationally driven in a direction to feed the paper P downstream by a motor (not shown).

分離手段２１の下流側には、図示しないモータにより回転駆動される駆動ローラ２６と、駆動ローラ２６との間で用紙Ｐをニップして従動回転するアシストローラ２７と、を備えて構成された第１中間送り部２５が設けられており、この第１中間送り部２５により、用紙Ｐが更に下流側へと送られる。   On the downstream side of the separating means 21, a driving roller 26 that is driven to rotate by a motor (not shown), and an assist roller 27 that is driven to rotate while the paper P is nipped between the driving roller 26 are provided. A first intermediate feeding unit 25 is provided, and the first intermediate feeding unit 25 feeds the paper P further downstream.

第１中間送り部２５の下流側には、用紙Ｐが湾曲反転経路を通過する際の（特に用紙後端が通過する際の）通紙負荷を軽減する従動ローラ２９が設けられており、更にその下流側には、図示しないモータにより回転駆動される駆動ローラ３２と、駆動ローラ３２との間で用紙Ｐをニップして従動回転するアシストローラ３３と、を備えて構成された第２中間送り部３１が設けられており、この第２中間送り部３１により、用紙Ｐが更に下流側へと送られる。   On the downstream side of the first intermediate feeding unit 25, a driven roller 29 is provided to reduce a paper passing load when the paper P passes through the curved reversal path (especially when the rear edge of the paper passes). On the downstream side thereof, a second intermediate feed comprising a drive roller 32 that is driven to rotate by a motor (not shown), and an assist roller 33 that is driven to rotate by nipping the paper P between the drive roller 32. A portion 31 is provided, and the sheet P is further sent downstream by the second intermediate feeding portion 31.

第２中間送り部３１の下流側には、記録手段４が配置されている。記録手段４は、搬送手段５と、記録ヘッド４２と、紙案内前３９と、排出手段６と、を備えている。尚、搬送手段５の上流側近傍には、用紙Ｐの通過を検出する用紙検出手段（図示せず）も設けられている。   The recording unit 4 is disposed on the downstream side of the second intermediate feeding unit 31. The recording unit 4 includes a conveying unit 5, a recording head 42, a paper guide front 39, and a discharging unit 6. Note that a paper detection means (not shown) for detecting the passage of the paper P is also provided in the vicinity of the upstream side of the transport means 5.

搬送手段５は、モータによって回転駆動される搬送駆動ローラ３５と、該搬送駆動ローラ３５に圧接して従動回転するよう紙案内上３７に軸支される搬送従動ローラ３６とを備えて構成されている。搬送手段５に到達した用紙Ｐは、搬送駆動ローラ３５と搬送従動ローラ３６とによってニップされた状態で搬送駆動ローラ３５が回転することにより、下流側へと精密送りされる。   The conveyance means 5 includes a conveyance drive roller 35 that is rotationally driven by a motor, and a conveyance driven roller 36 that is pivotally supported by the paper guide upper 37 so as to be driven and rotated against the conveyance drive roller 35. Yes. The paper P that has reached the transport means 5 is precisely fed to the downstream side when the transport drive roller 35 rotates while being nipped by the transport drive roller 35 and the transport driven roller 36.

ここで、搬送従動ローラ３６の回転中心は、搬送駆動ローラ３５の回転中心よりもやや下流側に設定されており、これにより両ローラの間から送り出される用紙Ｐの進行方向が、記録ヘッド４２のヘッド面と平行ではなく、紙案内前３９の上面に対して所定の突入角を形成するように構成されている。これにより、用紙Ｐの紙案内前３９からの浮き上がりが防止され、用紙Ｐの記録面と記録ヘッド４２との間の距離が適切に維持される。   Here, the rotation center of the conveyance driven roller 36 is set slightly downstream from the rotation center of the conveyance drive roller 35, and the traveling direction of the paper P sent out between the two rollers is thereby set to the recording head 42. Instead of being parallel to the head surface, a predetermined entry angle is formed with respect to the upper surface of the paper guide front 39. As a result, the paper P is prevented from being lifted from the pre-paper guide 39, and the distance between the recording surface of the paper P and the recording head 42 is appropriately maintained.

続いて記録ヘッド４２はキャリッジ４０の底部に設けられ、当該キャリッジ４０は主走査方向（図１の紙面表裏方向）に延びるキャリッジガイド軸４１にガイドされながら、図示しない駆動モータによって主走査方向に往復動する様に駆動される。尚、キャリッジ４０はインクカートリッジを搭載しない所謂オフキャリッジタイプであり、インクカートリッジ（図示せず）がキャリッジ４０から独立して設けられ、インク供給チューブ（図示せず）を介してインクカートリッジから記録ヘッド４２へとインクが供給されるように構成されている。   Subsequently, the recording head 42 is provided at the bottom of the carriage 40, and the carriage 40 is reciprocated in the main scanning direction by a drive motor (not shown) while being guided by a carriage guide shaft 41 extending in the main scanning direction (the front and back direction in FIG. 1). It is driven to move. The carriage 40 is a so-called off-carriage type in which no ink cartridge is mounted, and an ink cartridge (not shown) is provided independently from the carriage 40, and the ink cartridge is connected to the recording head via an ink supply tube (not shown). Ink is supplied to 42.

記録ヘッド４２と対向する位置には紙案内前３９が設けられ、当該紙案内前３９によって、用紙Ｐと記録ヘッド４２との距離が規定されるようになっている。そして紙案内前３９の下流側には、記録の行われた用紙Ｐを排出する排出手段６が設けられている。排出手段６は図示しないモータによって回転駆動される排出駆動ローラ４４と、当該排出駆動ローラ４４に接して従動回転する排出従動ローラ４５とを備えて構成され、記録手段４によって記録の行われた用紙Ｐは、排出手段６により、装置前方側に設けられた図示を省略するスタッカへと排出される。   A pre-paper guidance 39 is provided at a position facing the recording head 42, and the distance between the paper P and the recording head 42 is defined by the pre-paper guidance 39. Discharge means 6 for discharging the recorded paper P is provided downstream of the pre-paper guide 39. The discharge means 6 includes a discharge drive roller 44 that is rotationally driven by a motor (not shown), and a discharge driven roller 45 that is driven to rotate in contact with the discharge drive roller 44, and is a sheet on which recording is performed by the recording means 4. P is discharged by the discharge means 6 to a stacker (not shown) provided on the front side of the apparatus.

続いて反転ユニット７について説明する。反転ユニット７は図示しないモータにより回転駆動される大径の反転ローラ５０と、当該反転ローラ５０との間で用紙Ｐをニップして従動回転するアシストーラ５１、５２と、揺動軸３０ａを中心に揺動することにより用紙搬送経路を切り換える経路切換部材３０と、同じく揺動軸５３ａを中心に揺動することにより用紙搬送経路を切り換える経路切換部材５３と、を備えている。   Next, the reversing unit 7 will be described. The reversing unit 7 is centered on a large-diameter reversing roller 50 that is rotationally driven by a motor (not shown), assisters 51 and 52 that are driven to rotate while the paper P is nipped between the reversing roller 50, and a swing shaft 30a. A path switching member 30 that switches the paper transport path by swinging, and a path switching member 53 that switches the paper transport path by swinging about the swing shaft 53a are provided.

用紙カセット１１から送り出されて第１面に記録の行われた用紙Ｐは、第２中間送り部３１、搬送手段５、排出手段６、のこれらによる逆送り動作によって、第１面に記録が実行された際に用紙後端となっていた側が先端となって、反転ローラ５０とアシストローラ５２との間に誘い込まれる。尚、このとき経路切換部材３０、５３は自重によって下方に下がった状態にあり、用紙先端が斜め下方の経路に入り込まないよう、用紙先端を反転ローラ５０とアシストローラ５２との間に向けて案内する。   The sheet P, which has been sent out from the sheet cassette 11 and recorded on the first side, is recorded on the first side by the reverse feeding operation of the second intermediate feeding unit 31, the conveying means 5, and the discharging means 6. The side that was the trailing edge of the paper at the time becomes the leading edge, and is drawn between the reversing roller 50 and the assist roller 52. At this time, the path switching members 30 and 53 are lowered by their own weight, and the leading edge of the sheet is guided between the reversing roller 50 and the assist roller 52 so that the leading edge of the sheet does not enter the diagonally lower path. To do.

反転ローラ５０は図示を省略するモータにより図１の反時計回り方向に回転駆動されており、反転ローラ５０とアシストローラ５２との間に誘い込まれた用紙は、反転ローラ５０とアシストローラ５１との間を通って再び第２中間送り部３１に到達し、記録手段４に導かれ、以降同様に記録が実行される。尚、図１においては用紙Ｐの進行経路を、破線及び矢印で示している。   The reversing roller 50 is rotationally driven in a counterclockwise direction in FIG. 1 by a motor (not shown), and the paper drawn between the reversing roller 50 and the assist roller 52 is the reversing roller 50 and the assist roller 51. The second intermediate feeding section 31 is reached again through the interval, and is guided to the recording means 4, and thereafter recording is similarly performed. In FIG. 1, the traveling path of the paper P is indicated by a broken line and an arrow.

以上がプリンタ１の概要であり、続いて図２〜図４を参照しながら、経路切換部材３０について説明する。経路切換部材３０は、用紙カセット１１から記録手段４へと至る用紙搬送経路（以下「第１搬送経路」と言う）と、記録手段４の側から反転ユニット７の内部へ向かう用紙搬送経路（以下「第２搬送経路」と言う）と、が交わる位置に配置されている。   The outline of the printer 1 has been described above. Next, the path switching member 30 will be described with reference to FIGS. The path switching member 30 includes a paper transport path (hereinafter referred to as “first transport path”) from the paper cassette 11 to the recording unit 4 and a paper transport path (hereinafter referred to as “first transport path”) from the recording unit 4 to the inside of the reversing unit 7. "This is referred to as a" second transport path ").

第１搬送経路は、用紙カセット１１から送り出した用紙Ｐを、その送り出し方向（図１において左方向）とは逆方向（図１において右方向）に向きを変えて搬送する湾曲反転経路であり、用紙カセット１１に収容された用紙Ｐの先端位置を開始位置とし、第２中間送り部３１を終了位置とする。また第１搬送経路は、第１中間送り部２５から下流側の湾曲経路が、当該湾曲経路の外側に位置するガイドリブ５５及び経路切換部材３０と、内側に位置するガイド部材５４と、により形成されている。   The first transport path is a curved reversal path for transporting the paper P sent out from the paper cassette 11 while changing the direction in the direction opposite to the feed direction (left direction in FIG. 1) (right direction in FIG. 1). The leading end position of the paper P stored in the paper cassette 11 is set as the start position, and the second intermediate feeding unit 31 is set as the end position. Further, the first conveying path is formed by the guide rib 55 and the path switching member 30 that are located on the outer side of the curved path, and the guide member 54 that is located on the inner side of the curved path downstream from the first intermediate feeding unit 25. ing.

第２搬送経路は、記録手段４において記録の行われた用紙Ｐを、反転ユニット７に向けて搬送する搬送経路であり、第２中間送り部３１のやや下流側（この場合図１において左側）を開始位置とし、アシストローラ５２を終了位置とする、用紙Ｐをほぼ真っ直ぐに（直線的に）搬送する直線経路である。この直線経路は、経路上側に位置するガイド部材５８、ガイド部材５６、及び経路下側に位置するガイド部材５４、経路切換部材３０、経路切換部材５３、のこれら部材により形成される。   The second transport path is a transport path for transporting the paper P recorded by the recording unit 4 toward the reversing unit 7, and is slightly downstream of the second intermediate feeding unit 31 (in this case, the left side in FIG. 1). Is a straight path that conveys the paper P substantially straight (linearly), with the start position as the start position and the assist roller 52 as the end position. This straight path is formed by these members: a guide member 58 located above the path, a guide member 56, a guide member 54 located below the path, a path switching member 30, and a path switching member 53.

経路切換部材３０は、上記第１搬送経路と第２搬送経路が交わる位置に配置され、揺動軸３０ａを中心に揺動することにより、自重によって第１搬送経路を塞ぐとともに第２搬送経路に用紙Ｐを案内する第１状態（図２の実線）と、第１搬送経路内を進む用紙先端（図２において符号Ｐｆで示す）により押し上げられて第１搬送経路を開放する第２状態と、を切り換えるよう設けられている。   The path switching member 30 is disposed at a position where the first transport path and the second transport path cross each other, and swings about the swing shaft 30a to block the first transport path by its own weight and to move to the second transport path. A first state in which the paper P is guided (solid line in FIG. 2), and a second state in which the first transport path is released by being pushed up by a front end of the paper (indicated by reference numeral Pf in FIG. 2) traveling in the first transport path; It is provided to switch.

経路切換部材３０は、図３に示すようにリブ状体を成しており、用紙搬送方向と直交する方向（用紙幅方向）に沿って適宜の間隔で多数配置され、当該多数の経路切換部材３０が連結された状態の櫛歯状部材３００を構成するよう、樹脂成形により一体的に形成されている。また揺動軸３０ａが、櫛歯状部材３００の両端部及び中央部に、一体的に形成される。   As shown in FIG. 3, the path switching member 30 forms a rib-like body, and a large number of path switching members 30 are arranged at appropriate intervals along a direction (paper width direction) orthogonal to the paper transport direction. It is integrally formed by resin molding so as to constitute the comb-like member 300 in a state where 30 is connected. Further, the swing shaft 30 a is integrally formed at both ends and the center of the comb-like member 300.

次に第１搬送経路における湾曲経路の外側には、ガイドリブ５５が配置される。ガイドリブ５５は、図４に示すように経路切換部材３０と同様にリブ状体を成しており、用紙幅方向に沿って適宜の間隔で多数配置されるよう、ガイドリブ５５から上流側の湾曲経路を形成するガイド部材５４に樹脂成形により一体的に形成されている。尚、経路切換部材３０とガイドリブ５５は、図４に示すように用紙搬送方向と直交する方向に沿って互い違いに入り込むよう、その用紙幅方向における位置が設定されている。また図４において符号５７は、第２搬送経路を形成するガイドリブを示している。   Next, guide ribs 55 are arranged outside the curved path in the first transport path. As shown in FIG. 4, the guide rib 55 forms a rib-like body like the path switching member 30, and a curved path on the upstream side from the guide rib 55 so that many guide ribs 55 are arranged at appropriate intervals along the paper width direction. Are integrally formed by resin molding. Note that the path switching member 30 and the guide rib 55 are set in positions in the paper width direction so as to alternately enter along a direction orthogonal to the paper transport direction as shown in FIG. In FIG. 4, reference numeral 57 denotes a guide rib that forms the second transport path.

以上の構成において、経路切換部材３０の揺動軸３０ａは、ガイドリブ５５におけるガイド面５５ａから退避した位置、即ち第１搬送経路の湾曲経路から、当該湾曲経路の外側方向に離間した場所に配置されており、これにより第１搬送経路を進み経路切換部材３０に当接する用紙Ｐから受ける力を介してより一層容易に姿勢変化する様になっている。   In the above configuration, the swing shaft 30a of the path switching member 30 is disposed at a position retracted from the guide surface 55a of the guide rib 55, that is, at a position away from the curved path of the first transport path in the outward direction of the curved path. As a result, the posture can be changed more easily through the force received from the paper P that advances along the first conveyance path and contacts the path switching member 30.

即ち、経路切換部材３０は、通常自重によりその先端が姿勢規制部５４ａに当接した状態となっており（第１状態）、第１搬送経路を塞いでいる。そして用紙カセット１１から送り出された用紙Ｐが第１搬送経路内を進んで来ると、その先端Ｐｆが経路切換部材３０に当接し、これにより経路切換部材３０が押し上げられて第１搬送経路を開放する第２状態をとる。   That is, the path switching member 30 is in a state where the tip of the path switching member 30 is normally in contact with the attitude regulating portion 54a due to its own weight (first state), and closes the first transport path. When the paper P delivered from the paper cassette 11 advances in the first transport path, the leading end Pf contacts the path switching member 30, thereby pushing up the path switching member 30 and opening the first transport path. The second state is taken.

ここで仮に、用紙Ｐの先端Ｐｆが、経路切換部材３０における揺動軸３０ａの近傍位置に当接すると、経路切換部材３０を上方に押し上げられず、紙ジャムが発生する虞がある。しかしながら上記の通り、経路切換部材３０の揺動軸３０ａは、第１搬送経路の湾曲経路から、当該湾曲経路の外側方向に離間した場所に配置されているので、揺動中心と当接位置との距離（符号Ｌで示す）を大きく確保することができ、これにより経路切換部材３０を小さい力で容易に押し上げることができる。即ち、経路切換部材３０が、用紙Ｐが進む力を介してより一層容易に姿勢変化することが可能となる。   Here, if the leading end Pf of the paper P abuts on a position in the vicinity of the swing shaft 30a of the path switching member 30, the path switching member 30 cannot be pushed upward, and a paper jam may occur. However, as described above, the rocking shaft 30a of the path switching member 30 is disposed at a position away from the curved path of the first transport path in the outer direction of the curved path. Can be secured large (indicated by the symbol L), whereby the path switching member 30 can be easily pushed up with a small force. That is, the path switching member 30 can change its posture more easily through the force of the paper P traveling.

尚本実施形態においては、経路切換部材３０において第１搬送経路を形成する側（符号３０ｃで示す）、及び第２搬送経路を形成する側（符号３０ｂで示す）が、用紙搬送方向に沿って直線状に形成されており、これにより経路切換部材３０の寸法精度管理の容易化が図られている。   In the present embodiment, the side of the path switching member 30 that forms the first conveyance path (indicated by reference numeral 30c) and the side that forms the second conveyance path (indicated by reference numeral 30b) extend along the sheet conveyance direction. It is formed in a straight line, thereby facilitating dimensional accuracy management of the path switching member 30.

本発明の一実施形態に係るプリンタの用紙搬送経路を示す側断面図。FIG. 3 is a side cross-sectional view illustrating a paper conveyance path of the printer according to the embodiment of the invention. 図１の経路切換部材周辺の拡大図。FIG. 2 is an enlarged view around a path switching member in FIG. 1. 経路切換部材の斜視図。The perspective view of a path | route switching member. 反転ユニットの正面図。The front view of an inversion unit.

符号の説明Explanation of symbols

１ インクジェットプリンタ、３ 給送装置、４ 記録手段、５ 搬送手段、６ 排出手段、７ 反転ユニット、１１ 用紙カセット、１２ 分離斜面、１６ ピックアップローラ、１７ 揺動部材、１８ 揺動軸、２０ 従動ローラ、２１ 分離手段、２２ 分離ローラ、２３ 駆動ローラ、２５ 第１中間送り部、２６ 駆動ローラ、２７ アシストローラ、２９ 従動ローラ、３０ 経路切換部材、３１ 第２中間送り部、３２ 駆動ローラ、３３ アシストローラ、３５ 搬送駆動ローラ、３６ 搬送従動ローラ、３７ 紙案内上、３９ 紙案内前、４０ キャリッジ、４１ キャリッジガイド軸、４２ 記録ヘッド、４４ 排出駆動ローラ、４５ 排出従動ローラ、５０ 反転ローラ、５１、５２ アシストローラ、５３ 経路切換部材、５４ ガイド部材、５５ ガイドリブ、５５ａ ガイド面、５６ ガイド部材、５７ ガイドリブ、５８ ガイド部材、Ｐ 記録用紙 DESCRIPTION OF SYMBOLS 1 Inkjet printer, 3 Feeding device, 4 Recording means, 5 Conveyance means, 6 Ejection means, 7 Reversing unit, 11 Paper cassette, 12 Separation slope, 16 Pickup roller, 17 Swing member, 18 Swing shaft, 20 Driven roller , 21 Separating means, 22 Separating roller, 23 Driving roller, 25 First intermediate feeding portion, 26 Driving roller, 27 Assist roller, 29 Drive roller, 30 Path switching member, 31 Second intermediate feeding portion, 32 Driving roller, 33 Assist Roller, 35 Transport drive roller, 36 Transport driven roller, 37 On paper guide, 39 Before paper guide, 40 Carriage, 41 Carriage guide shaft, 42 Recording head, 44 Discharge drive roller, 45 Discharge driven roller, 50 Reverse roller, 51, 52 assist roller, 53 path switching member, 54 guide member 55 ribs, 55a guide surface 56 the guide members, 57 ribs, 58 guide member, P recording paper

Claims (4)

媒体を湾曲させて搬送する第１搬送経路と、
前記第１搬送経路と交わる第２搬送経路と、
前記第１搬送経路と前記第２搬送経路とが交わる位置に配置され、揺動軸を中心に揺動することにより、自重によって前記第１搬送経路を塞ぐとともに前記第２搬送経路に媒体を案内する第１状態と、前記第１搬送経路内を進む媒体により押し上げられて前記第１搬送経路を開放する第２状態と、を切り換える経路切換部材と、を備え、
前記経路切換部材の揺動軸が、前記第１搬送経路の湾曲経路から、当該湾曲経路の外側方向に離間した場所に配置されている、
ことを特徴とする媒体搬送装置。 A first transport path for curving and transporting the medium;
A second transport path intersecting the first transport path;
The first conveyance path and the second conveyance path are arranged at a position where the first conveyance path and the second conveyance path intersect. By swinging around a swing shaft, the first transport path is blocked by its own weight and the medium is guided to the second transport path. A path switching member that switches between a first state to be switched and a second state that is pushed up by a medium that travels in the first transport path to open the first transport path,
The swing shaft of the path switching member is disposed at a location spaced from the curved path of the first transport path in the outer direction of the curved path.
A medium conveying apparatus characterized by the above. 請求項１に記載の媒体搬送装置において、前記経路切換部材において前記第１搬送経路を形成する側、及び前記第２搬送経路を形成する側が、媒体の搬送方向に沿って直線状に形成されている、
ことを特徴とする媒体搬送装置。 2. The medium transport apparatus according to claim 1, wherein a side of the path switching member that forms the first transport path and a side that forms the second transport path are linearly formed along the transport direction of the medium. Yes,
A medium conveying apparatus characterized by the above. 請求項１または２に記載の媒体搬送装置において、前記第１搬送経路が、媒体を収容する媒体カセットから送り出された媒体を前記媒体カセットからの送り出し方向とは逆方向に向きを変えて下流側へ送る湾曲反転経路であり、
前記第２搬送経路が、媒体を直線的に搬送する直線経路である、
ことを特徴とする媒体搬送装置。 3. The medium conveying apparatus according to claim 1, wherein the first conveying path changes the direction of the medium fed from the medium cassette containing the medium in a direction opposite to the feeding direction from the medium cassette, and is downstream. Curved reversal path to
The second transport path is a straight path for transporting the medium linearly,
A medium conveying apparatus characterized by the above. 媒体に記録を行う記録手段と、
請求項１から３のいずれか１項に記載の媒体搬送装置と、
を備えたことを特徴とする記録装置。 Recording means for recording on a medium;
The medium carrying device according to any one of claims 1 to 3,
A recording apparatus comprising:
JP2008079974A 2008-03-26 2008-03-26 Medium carrying device and recording device Pending JP2009234676A (en)

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Publications (1)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016064889A (en) * 2014-09-25 2016-04-28 ブラザー工業株式会社 Conveyance device and image forming apparatus

Citations (4)

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JP2000211826A (en) * 1999-01-18 2000-08-02 Canon Inc Image recording device
JP2002059599A (en) * 2000-08-18 2002-02-26 Seiko Epson Corp Perfecting printer
JP2003154643A (en) * 2001-11-26 2003-05-27 Ricoh Co Ltd Ink jet recorder
JP2007191232A (en) * 2006-01-17 2007-08-02 Kyocera Mita Corp Image forming device

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2000211826A (en) * 1999-01-18 2000-08-02 Canon Inc Image recording device
JP2002059599A (en) * 2000-08-18 2002-02-26 Seiko Epson Corp Perfecting printer
JP2003154643A (en) * 2001-11-26 2003-05-27 Ricoh Co Ltd Ink jet recorder
JP2007191232A (en) * 2006-01-17 2007-08-02 Kyocera Mita Corp Image forming device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016064889A (en) * 2014-09-25 2016-04-28 ブラザー工業株式会社 Conveyance device and image forming apparatus

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