JP2007233422A - Paper sheets carrying device - Google Patents

Paper sheets carrying device Download PDF

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JP2007233422A
JP2007233422A JP2007161008A JP2007161008A JP2007233422A JP 2007233422 A JP2007233422 A JP 2007233422A JP 2007161008 A JP2007161008 A JP 2007161008A JP 2007161008 A JP2007161008 A JP 2007161008A JP 2007233422 A JP2007233422 A JP 2007233422A
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paper
opening
sheet
closing
rotating member
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Mitsuhiro Shibata
充啓 柴田
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Kyocera Document Solutions Inc
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Kyocera Mita Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper sheets carrying device capable of easily removing a jam without damaging the jammed paper sheets. <P>SOLUTION: An opening/closing part 3 is rotated within a substantially horizontal plane, thereby allowing a paper sheets carrying path PL to be exposed. The opening/closing part 3 includes driven rollers 31, and auxiliary conveying rollers 32 serving as rotating members. The auxiliary conveying rollers 32 are disposed so that paper sheets are passed between the auxiliary conveying rollers 32 and opening/closing part 3. The auxiliary conveying rollers 32 are disposed in such areas where paper sheets ejected from a paper feeder 102 merge a vertical conveying part of the paper sheets conveying path PL. Specifically, they are disposed in the areas where the direction of the paper sheets conveying path PL is changed. Thus, if paper sheets are jammed between the auxiliary conveying roller 32 and opening/closing part 3, the jammed paper sheets can be automatically pulled out by uncovering the opening/closing part 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、複写機やプリンタ等の画像形成装置に備えられる用紙搬送装置に関する。   The present invention relates to a sheet conveying device provided in an image forming apparatus such as a copying machine or a printer.

複写機やプリンタ等の画像形成装置の一般的な構成は、印刷前の用紙を給紙する給紙装置や、用紙を給紙装置から転写装置へと搬送する用紙搬送装置、トナー像を用紙に転写する転写装置等からなる。画像形成装置には、設置床面積をできるだけ小さくするために、画像形成装置の下部に複数の給紙装置を備え、上部に転写装置を備えたものがある。このような画像形成装置おいては、用紙搬送装置は、画像形成装置の側面に沿って垂直に用紙を搬送する。この用紙搬送装置内には、用紙を搬送するための搬送ローラや、この搬送ローラと当接して用紙を挿通するニップを形成する従動ローラ、用紙搬送路を構成するガイド部材等の搬送部材が設けられる。   The general configuration of an image forming apparatus such as a copying machine or a printer includes a paper feeding device that feeds paper before printing, a paper transport device that transports paper from the paper feeding device to a transfer device, and a toner image on paper. It consists of a transfer device for transferring. Some image forming apparatuses include a plurality of paper feeding devices at the bottom of the image forming apparatus and a transfer device at the top in order to reduce the installation floor area as much as possible. In such an image forming apparatus, the sheet conveying apparatus conveys the sheet vertically along the side surface of the image forming apparatus. In the sheet conveying apparatus, conveying members such as a conveying roller for conveying the sheet, a driven roller that forms a nip that contacts the conveying roller and inserts the sheet, and a guide member that forms the sheet conveying path are provided. It is done.

ところで、用紙搬送装置において用紙ジャムが発生した場合、ジャムの原因となった用紙を取り除くことが必要である。従来、様々なジャム処理方法が提案されているが、例えば、用紙搬送装置に用紙搬送路を露出可能にする開閉部を設け、この開閉部を開いて用紙搬送路と搬送部材を露出させ、用紙を取り除くものがある。このような用紙搬送装置の一例を特許文献１に見ることができる。
特開２００２−２８４３９２号公報 By the way, when a paper jam occurs in the paper transport device, it is necessary to remove the paper that caused the jam. Conventionally, various jam handling methods have been proposed. For example, an opening / closing unit that allows the sheet conveying path to be exposed is provided in the sheet conveying device, and the opening / closing unit is opened to expose the sheet conveying path and the conveying member. There is something to remove. An example of such a paper transport device can be seen in Japanese Patent Application Laid-Open No. 2004-133620.
JP 2002-284392 A

しかしながら、特許文献１記載の用紙搬送装置では、用紙搬送路で用紙ジャムが発生した場合、開閉部を開いて用紙搬送路を露出させた後に、人が手で用紙を取り除く必要がある。このジャム状態にある用紙を取り除く作業は、非常に面倒であり、手間が掛かるとともに時間を浪費する。また、人が手で用紙を取り除く場合、用紙の局部を持って引き出すことになるが、このとき用紙に大きな力が加えられることによって用紙が破損してしまう。そして、この破損した用紙の細かい紙片が装置内に残ることより、用紙搬送性能や画像形成性能の低下、その他の動作不良等の問題が生じる。   However, in the paper conveyance device described in Patent Document 1, when a paper jam occurs in the paper conveyance path, it is necessary for a person to remove the paper by hand after opening the opening and closing part to expose the paper conveyance path. The operation of removing the paper in the jammed state is very troublesome, takes time and wastes time. In addition, when a person removes a sheet by hand, the sheet is pulled out by holding a local part of the sheet. At this time, a large force is applied to the sheet, and the sheet is damaged. Then, the small pieces of damaged paper remain in the apparatus, thereby causing problems such as deterioration in paper conveyance performance and image forming performance, and other malfunctions.

また、用紙搬送路の方向転換箇所において、搬送経路の方向が大きく変化せしめられる場合、搬送経路を構成する部材に用紙が擦り付けられることにより、用紙の表面が削れ、紙の粉が発生するという問題が生じる。   Further, when the direction of the transport path is greatly changed at the direction change point of the paper transport path, the surface of the paper is scraped and the paper dust is generated by rubbing the paper against the members constituting the transport path. Occurs.

本発明は上記の点に鑑みなされたものであり、複写機やプリンタ等の画像形成装置に備えられた用紙搬送装置において、ジャム状態にある用紙を破損することなく、簡単にジャム処理を行うことが可能な用紙搬送装置を提供することを目的とする。また、搬送経路の方向転換箇所において、用紙の粉を発生させることなく、スムーズに用紙を搬送することが可能な用紙搬送装置を提供することを目的とする。   SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and in a paper transport device provided in an image forming apparatus such as a copying machine or a printer, it is possible to easily perform jam processing without damaging paper in a jammed state. It is an object of the present invention to provide a paper transport device capable of performing the above. It is another object of the present invention to provide a paper transport device that can smoothly transport paper without generating paper dust at the direction change point of the transport path.

上記の課題を解決するため、本発明は、本体と開閉部とを備え、両者の間に、用紙を垂直方向に搬送する用紙搬送路を形成するとともに、前記開閉部が用紙搬送経路を露出可能にするものである用紙搬送装置において、前記用紙搬送路は、その横方向に位置し、上下方向に並べて配置された複数の給紙装置から排出された用紙を受け取り、順次垂直上方へと搬送するものであって、給紙装置から排出された用紙が、用紙搬送路の垂直搬送部分に合流する箇所に、給紙装置から排出された用紙と、下方から垂直搬送されてきた用紙との、各々の用紙の搬送を補助する回転部材を、各々の用紙がこの回転部材と前記開閉部との間を通過するように設けるとともに、開閉部の開放に伴って、回転部材がこの開放方向へと移動することとした。   In order to solve the above-described problems, the present invention includes a main body and an opening / closing part, and forms a paper conveyance path for conveying the paper in the vertical direction between the two and the opening / closing part can expose the paper conveyance path. In the sheet conveying apparatus, the sheet conveying path is positioned in the horizontal direction, receives sheets discharged from a plurality of sheet feeding apparatuses arranged side by side in the vertical direction, and sequentially conveys the sheet vertically upward. Each of the sheet discharged from the sheet feeding device and the sheet vertically conveyed from below at a position where the sheet discharged from the sheet feeding device joins the vertical conveyance portion of the sheet conveyance path. A rotating member for assisting the conveyance of the paper is provided so that each sheet passes between the rotating member and the opening / closing portion, and the rotating member moves in the opening direction as the opening / closing portion is opened. It was decided to.

また、上記構成の用紙搬送装置において、前記回転部材を、前記開閉部に設けることとした。   Further, in the paper transport device having the above configuration, the rotating member is provided in the opening / closing portion.

また、上記構成の用紙搬送装置において、前記回転部材を、前記本体に設けるとともに、回転部材を開閉部の開放方向へと付勢する付勢手段を設けることとした。   Further, in the sheet transport device having the above-described configuration, the rotating member is provided in the main body, and an urging unit that urges the rotating member in the opening direction of the opening / closing portion is provided.

また、上記構成の用紙搬送装置において、前記付勢が、弾性部材によってなされることとした。   Further, in the paper transport device having the above configuration, the urging is performed by an elastic member.

また、上記構成の用紙搬送装置において、前記回転部材を、用紙搬送路の方向転換箇所に設けることとした。   Further, in the paper transport device having the above-described configuration, the rotating member is provided at a direction change portion of the paper transport path.

また、上記構成の用紙搬送装置において、前記開閉部が、略水平面内で回動することとした。   Further, in the sheet transport device having the above-described configuration, the opening / closing portion rotates in a substantially horizontal plane.

また、上記構成の用紙搬送装置において、前記開閉部が、略垂直面内で回動することとした。   Further, in the sheet transport device having the above-described configuration, the opening / closing portion rotates in a substantially vertical plane.

本発明の構成によれば、本体と開閉部とを備え、両者の間に、用紙を垂直方向に搬送する用紙搬送路を形成するとともに、前記開閉部が用紙搬送経路を露出可能にするものである用紙搬送装置において、前記用紙搬送路は、その横方向に位置し、上下方向に並べて配置された複数の給紙装置から排出された用紙を受け取り、順次垂直上方へと搬送するものであって、給紙装置から排出された用紙が、用紙搬送路の垂直搬送部分に合流する箇所に、給紙装置から排出された用紙と、下方から垂直搬送されてきた用紙との、各々の用紙の搬送を補助する回転部材を、各々の用紙がこの回転部材と前記開閉部との間を通過するように設けるとともに、開閉部の開放に伴って、回転部材がこの開放方向へと移動することとしたので、回転部材と開閉部との間で用紙ジャムが発生した場合、開閉部を開くことによって自動的にこのジャム状態にある用紙を引き出すことができる。その結果、人が用紙を手で持って引き出す必要がないので、手間や時間が掛からない。さらに、回転部材は用紙の搬送を補助するように作られた形状であるので、用紙全体に均等な力を加えて引き出すことが可能である。これにより用紙の破損を抑えることができ、破損した細かい紙片が装置内に残ることもないので、装置に不具合が発生するのを防ぐことが可能である。   According to the configuration of the present invention, the main body and the opening / closing part are provided, and a paper conveyance path for conveying the paper in the vertical direction is formed between the main body and the opening / closing part, and the opening / closing part allows the paper conveyance path to be exposed. In a certain sheet conveying apparatus, the sheet conveying path is positioned in the lateral direction, receives sheets discharged from a plurality of sheet feeding apparatuses arranged side by side in the vertical direction, and sequentially conveys the sheet vertically upward. , Transporting each sheet of paper discharged from the paper feeder and paper vertically transported from below at the location where the paper discharged from the paper feeder joins the vertical transport portion of the paper transport path Rotating members are provided so that each sheet passes between the rotating member and the opening / closing portion, and the rotating member moves in the opening direction as the opening / closing portion is opened. So rotating member and opening / closing part If the paper jam occurs between the can derive automatically paper in this jam by opening the opening and closing unit. As a result, since it is not necessary for a person to pull out the paper by hand, it does not take time and effort. Furthermore, since the rotating member has a shape designed to assist the conveyance of the sheet, it can be pulled out with an equal force applied to the entire sheet. As a result, the paper can be prevented from being damaged, and the damaged fine paper piece does not remain in the apparatus, so that the apparatus can be prevented from malfunctioning.

また、前記回転部材を、前記開閉部に設けることとしたので、開閉部を開くと同時に、回転部材を用紙搬送路上の所定の位置から引き離すことが可能となる。その結果、回転部材と開閉部との間で用紙ジャムが発生した場合、開閉部を開くことによって自動的にこのジャム状態にある用紙を開閉部の開放方向へと引き出すことができる。   Further, since the rotating member is provided in the opening / closing part, it is possible to separate the rotating member from a predetermined position on the sheet conveyance path at the same time as opening the opening / closing part. As a result, when a paper jam occurs between the rotating member and the opening / closing portion, the paper in this jammed state can be automatically pulled out in the opening direction of the opening / closing portion by opening the opening / closing portion.

また、前記回転部材を、前記本体に設けるとともに、回転部材を開閉部の開放方向へと付勢する付勢手段を設けることとしたので、開閉部を開くと同時に、回転部材が開閉部の開放方向へと付勢され、回転部材を用紙搬送路上の所定の位置から引き離すことが可能となる。その結果、回転部材と開閉部との間で用紙ジャムが発生した場合、開閉部を開くことによって自動的にこのジャム状態にある用紙を開閉部の開放方向へと引き出すことができる。   In addition, since the rotating member is provided in the main body and an urging means for urging the rotating member in the opening direction of the opening / closing part is provided, the rotating member opens the opening / closing part simultaneously with opening the opening / closing part. The rotating member can be pulled away from a predetermined position on the paper transport path. As a result, when a paper jam occurs between the rotating member and the opening / closing portion, the paper in this jammed state can be automatically pulled out in the opening direction of the opening / closing portion by opening the opening / closing portion.

また、前記付勢が、弾性部材によってなされることとしたので、用紙搬送装置に備えられた開閉部を開くことによって、回転部材を開閉部の開放方向へと勢いよく押すことができる。その結果、ジャム状態にある用紙を容易に引き出すことが可能となる。これにより、ジャム処理に対する作業をより効率的に進めることができる。   In addition, since the urging is performed by the elastic member, the rotating member can be pushed in the opening direction of the opening / closing part by opening the opening / closing part provided in the sheet conveying device. As a result, it is possible to easily pull out the paper in the jammed state. Thereby, the operation | work with respect to a jam process can be advanced more efficiently.

また、前記回転部材を、用紙搬送路の方向転換箇所に設けることとしたので、用紙ジャムが発生し易い用紙搬送路の方向転換箇所において、そのジャム処理に大きな効果が期待できる。したがって、ジャム処理に掛かる手間や時間をさらに短縮することが可能となる。また、この方向転換箇所において搬送経路の方向が大きく変化せしめられる場合、ここに回転部材を設けることにより、用紙をスムーズに搬送することができる。その結果、搬送経路を構成する部材に用紙が擦り付けられることがないので、用紙の表面が削られることを防止できる。   In addition, since the rotating member is provided at the direction change portion of the paper conveyance path, a large effect can be expected in the jam processing at the direction change portion of the paper conveyance path where the paper jam easily occurs. Therefore, it is possible to further reduce the labor and time required for jam processing. In addition, when the direction of the conveyance path is greatly changed at this direction change point, the sheet can be smoothly conveyed by providing a rotating member here. As a result, since the sheet is not rubbed against the members constituting the conveyance path, the surface of the sheet can be prevented from being scraped.

また、前記開閉部が、略水平面内で回動することとしたので、開閉部を略水平面内で回動して用紙搬送路を露出し、ジャム処理を行う用紙搬送装置にも本発明が利用可能となる。その結果、ジャム状態にある用紙を破損することなく、簡単にジャム処理を行うことが可能な用紙搬送装置の範囲がさらに拡大し、たいへん好都合である。   In addition, since the opening / closing part is rotated in a substantially horizontal plane, the present invention is also used for a paper conveying apparatus that rotates the opening / closing part in a substantially horizontal plane to expose the paper conveyance path and performs jam processing. It becomes possible. As a result, the range of the sheet conveying apparatus that can easily perform the jam processing without damaging the jammed sheet is further expanded, which is very convenient.

また、前記開閉部が、略垂直面内で回動することとしたので、開閉部を略垂直面内で回動して用紙搬送路を露出し、ジャム処理を行う用紙搬送装置にも本発明が利用可能となる。その結果、ジャム状態にある用紙を破損することなく、簡単にジャム処理を行うことが可能な用紙搬送装置の範囲がさらに拡大し、たいへん好都合である。   In addition, since the opening / closing section is rotated in a substantially vertical plane, the present invention is also applied to a sheet conveying apparatus that rotates the opening / closing section in a substantially vertical plane to expose the sheet conveyance path and perform jam processing. Will be available. As a result, the range of the sheet conveying apparatus that can easily perform the jam processing without damaging the jammed sheet is further expanded, which is very convenient.

以下、本発明の実施形態を図に基づき説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

本発明の第１の実施形態に係る用紙搬送装置について、図１、図２、図７を用いて説明する。図１は、用紙搬送装置を示す模型的断面正面図である。図２は、図１に示す用紙搬送装置の開閉部を開いた状態を示す模型的断面正面図である。図７は、本発明の用紙搬送装置を備える画像形成装置を示す模型的断面正面図である。   A sheet conveying apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1, 2, and 7. FIG. 1 is a schematic cross-sectional front view showing a paper conveying apparatus. FIG. 2 is a schematic cross-sectional front view showing a state in which the opening / closing part of the paper conveying apparatus shown in FIG. 1 is opened. FIG. 7 is a schematic cross-sectional front view showing an image forming apparatus including the paper conveying device of the present invention.

図７において、画像形成装置１００には、用紙搬送装置１の他に、光学装置１０１と、給紙装置１０２と、作像／転写装置１０３と、定着装置１０４と、両面印刷装置１０５と、排紙装置１０６等が備えられる。用紙搬送装置１は、画像形成装置１００の下部に備えられた給紙装置１０２から、上部に備えられた作像／転写装置１０３へと、画像形成装置１００本体の側面に沿って垂直に用紙を搬送する。   In FIG. 7, the image forming apparatus 100 includes an optical device 101, a paper feeding device 102, an image forming / transfer device 103, a fixing device 104, a double-sided printing device 105, and a paper discharge device 1 in addition to the paper transport device 1. A paper device 106 and the like are provided. The sheet conveying apparatus 1 feeds a sheet vertically from the sheet feeding apparatus 102 provided at the lower part of the image forming apparatus 100 to the image forming / transferring apparatus 103 provided at the upper part along the side surface of the image forming apparatus 100 main body. Transport.

次に、用紙搬送装置１の詳細について図１と図２を用いて説明する。用紙搬送装置１は、本体２と、開閉部３で構成される。ＰＬは用紙搬送路を示す。本体２には、搬送ローラ２１と、垂直部ガイド部材２２と、合流部ガイド部材２３が設けられている。   Next, details of the sheet conveying apparatus 1 will be described with reference to FIGS. 1 and 2. The sheet transport device 1 includes a main body 2 and an opening / closing unit 3. PL indicates a paper conveyance path. The main body 2 is provided with a conveyance roller 21, a vertical portion guide member 22, and a merging portion guide member 23.

搬送ローラ２１は、後述する従動ローラ３１と当接してニップを形成する。このニップに用紙が挿通され、搬送ローラ２１が図示しない駆動装置によって回転せしめられることにより、用紙が搬送される。垂直部ガイド部材２２は、用紙が所定の経路を辿って搬送されるようにするためのものである。合流部ガイド部材２３は、垂直部ガイド部材２２と同様に、用紙が所定の経路を辿って搬送されるようにするためのものであって、用紙搬送路ＰＬの垂直搬送部分と給紙装置１０２からの搬送路が合流する箇所に設けられている。これらの垂直部ガイド部材２２と合流部ガイド部材２３が、用紙搬送路ＰＬの本体２側の一面を構成する。   The conveyance roller 21 abuts on a driven roller 31 described later to form a nip. A sheet is inserted into the nip, and the conveying roller 21 is rotated by a driving device (not shown), whereby the sheet is conveyed. The vertical guide member 22 is used for transporting the paper along a predetermined path. Similar to the vertical portion guide member 22, the confluence portion guide member 23 is for allowing the sheet to be conveyed along a predetermined path, and is used for the vertical conveyance portion of the sheet conveyance path PL and the sheet feeding device 102. It is provided in the place where the conveyance path from The vertical portion guide member 22 and the merging portion guide member 23 constitute one surface of the main body 2 side of the paper transport path PL.

開閉部３は、画像形成装置１００の背面側を支点とし、前面側を自由端として略水平面内で回動することにより、用紙搬送路ＰＬを露出可能にする。開閉部３の内壁面３ａが、用紙搬送路ＰＬの開閉部３側の一面を構成する。開閉部３には、従動ローラ３１と、回転部材である搬送補助ローラ３２が設けられている。   The opening / closing unit 3 rotates in a substantially horizontal plane with the back side of the image forming apparatus 100 as a fulcrum and the front side as a free end, thereby allowing the sheet conveyance path PL to be exposed. An inner wall surface 3a of the opening / closing part 3 constitutes one surface of the sheet conveying path PL on the opening / closing part 3 side. The opening / closing unit 3 includes a driven roller 31 and a conveyance auxiliary roller 32 that is a rotating member.

従動ローラ３１は、前記搬送ローラ２１と当接して用紙を挿通するニップを形成する。従動ローラ３１を回転せしめる駆動装置はなく、搬送ローラ２１の回転に従って回転する。回転部材である搬送補助ローラ３２は、用紙の搬送を補助するためのものであって、用紙がこの搬送補助ローラ３２と開閉部３の内壁面３ａとの間を通るように設けられている。また搬送補助ローラ３２は、給紙装置１０２から排出された用紙が、用紙搬送路ＰＬの垂直搬送部分に合流するような箇所、すなわち用紙搬送路ＰＬの方向転換箇所に設けられている。   The driven roller 31 is in contact with the conveying roller 21 to form a nip through which the paper is inserted. There is no drive device that rotates the driven roller 31, and it rotates according to the rotation of the transport roller 21. The conveyance auxiliary roller 32 that is a rotating member is for assisting conveyance of the sheet, and is provided so that the sheet passes between the conveyance auxiliary roller 32 and the inner wall surface 3 a of the opening / closing unit 3. Further, the conveyance auxiliary roller 32 is provided at a place where the paper discharged from the paper feeding device 102 joins the vertical conveyance portion of the paper conveyance path PL, that is, at a direction change position of the paper conveyance path PL.

ここで、回転部材である搬送補助ローラ３２と開閉部３との間で用紙ジャムが発生した場合、図２に示すように、開閉部３を開くことによって自動的にこのジャム状態にある用紙Ｐを引き出すことができる。その結果、人が用紙Ｐを手で持って引き出す必要がないので、手間や時間が掛からない。さらに、搬送補助ローラ３２は用紙Ｐの搬送を補助するように作られたローラ形状であるので、用紙全体に均等な力を加えて引き出すことが可能である。これにより用紙Ｐの破損を抑えることができ、破損した細かい紙片が用紙搬送装置１内に残ることもないので、装置に不具合が発生するのを防ぐことが可能である。   Here, when a paper jam occurs between the conveyance auxiliary roller 32 that is a rotating member and the opening / closing unit 3, as shown in FIG. 2, the paper P that is automatically in this jammed state by opening the opening / closing unit 3 is used. Can be pulled out. As a result, since it is not necessary for a person to pull out the paper P by hand, it does not take time and effort. Further, since the conveyance auxiliary roller 32 has a roller shape so as to assist the conveyance of the paper P, it can be pulled out with an equal force applied to the entire paper. As a result, damage to the paper P can be suppressed, and a broken piece of paper does not remain in the paper transport apparatus 1, so that it is possible to prevent a malfunction from occurring in the apparatus.

また、回転部材である搬送補助ローラ３２を開閉部３に設けることにより、開閉部３を開くと同時に、搬送補助ローラ３２を用紙搬送路ＰＬ上の所定の位置から引き離すことが可能となる。その結果、搬送補助ローラ３２と開閉部３との間で用紙ジャムが発生した場合、開閉部３を開くことによって自動的にこのジャム状態にある用紙Ｐを開閉部３の開放方向へと引き出すことができる。   In addition, by providing the opening / closing portion 3 with the conveyance auxiliary roller 32 that is a rotating member, the conveyance auxiliary roller 32 can be separated from a predetermined position on the paper conveyance path PL at the same time as the opening / closing portion 3 is opened. As a result, when a paper jam occurs between the conveyance auxiliary roller 32 and the opening / closing unit 3, the paper P in this jammed state is automatically pulled out in the opening direction of the opening / closing unit 3 by opening the opening / closing unit 3. Can do.

さらに、用紙搬送路ＰＬの方向転換箇所においては、用紙ジャムが発生し易いので、上記の構成により、そのジャム処理に大きな効果が期待できる。したがって、ジャム処理に掛かる手間や時間をさらに短縮することが可能となる。また、この方向転換箇所において搬送経路の方向が大きく変化せしめられる場合、ここに回転部材である搬送補助ローラ３２を設けることにより、用紙Ｐをスムーズに搬送することができる。その結果、用紙搬送路ＰＬを構成する部材に用紙Ｐが擦り付けられることがないので、用紙Ｐの表面が削られることを防止できる。   Further, since a paper jam is likely to occur at the direction change point of the paper conveyance path PL, the above configuration can be expected to have a great effect on the jam processing. Therefore, it is possible to further reduce the labor and time required for jam processing. In addition, when the direction of the conveyance path is greatly changed at the direction changing portion, the paper P can be smoothly conveyed by providing the conveyance auxiliary roller 32 as a rotating member here. As a result, since the paper P is not rubbed against the members constituting the paper transport path PL, the surface of the paper P can be prevented from being scraped.

図３は、本発明の第２の実施形態に係る用紙搬送装置の開閉部を開いた状態を示す模型的断面正面図である。なお、この実施形態の基本的構成は、前記第１の実施形態と同じであるので、共通する構成要素には前と同じ符号を付し、説明は省略するものとする。   FIG. 3 is a schematic cross-sectional front view showing a state in which the opening / closing part of the sheet conveying apparatus according to the second embodiment of the present invention is opened. Since the basic configuration of this embodiment is the same as that of the first embodiment, common components are denoted by the same reference numerals as before, and description thereof is omitted.

開閉部３は、画像形成装置１００の底面側を支点とし、上面側を自由端として略垂直面内で回動することにより、用紙搬送路ＰＬを露出可能にする。開閉部３には、従動ローラ３１と、回転部材である搬送補助ローラ３２が設けられている。搬送補助ローラ３２は、用紙の搬送を補助するためのものであって、用紙がこの搬送補助ローラ３２と開閉部３の内壁面３ａとの間を通るように設けられている。また搬送補助ローラ３２は、給紙装置１０２から排出された用紙が、用紙搬送路ＰＬの垂直搬送部分に合流するような箇所、すなわち用紙搬送路ＰＬの方向転換箇所に設けられている。   The opening / closing part 3 allows the sheet conveying path PL to be exposed by rotating in a substantially vertical plane with the bottom surface side of the image forming apparatus 100 as a fulcrum and the upper surface side as a free end. The opening / closing unit 3 includes a driven roller 31 and a conveyance auxiliary roller 32 that is a rotating member. The conveyance auxiliary roller 32 is for assisting conveyance of the sheet, and is provided so that the sheet passes between the conveyance auxiliary roller 32 and the inner wall surface 3 a of the opening / closing unit 3. Further, the conveyance auxiliary roller 32 is provided at a place where the paper discharged from the paper feeding device 102 joins the vertical conveyance portion of the paper conveyance path PL, that is, at a direction change position of the paper conveyance path PL.

この場合においても、第１の実施形態と同様に、回転部材である搬送補助ローラ３２と開閉部３との間で用紙ジャムが発生した場合、図３に示すように、開閉部３を開くことによって自動的にこのジャム状態にある用紙Ｐを引き出すことができる。その結果、人が用紙Ｐを手で持って引き出す必要がないので、手間や時間が掛からない。   Also in this case, as in the first embodiment, when a paper jam occurs between the conveyance auxiliary roller 32, which is a rotating member, and the opening / closing unit 3, the opening / closing unit 3 is opened as shown in FIG. Can automatically pull out the paper P in this jammed state. As a result, since it is not necessary for a person to pull out the paper P by hand, it does not take time and effort.

本発明の第３の実施形態に係る用紙搬送装置を、図４と図５に示す。図４は、用紙搬送装置を示す模型的断面正面図である。図５は、図４に示す用紙搬送装置の開閉部を開放した状態を示す模型的断面正面図である。なお、この実施形態の基本的構成は、前記第１の実施形態と同じであるので、共通する構成要素には前と同じ符号を付し、説明は省略するものとする。   A paper conveying apparatus according to a third embodiment of the present invention is shown in FIGS. FIG. 4 is a schematic cross-sectional front view showing the paper transport device. FIG. 5 is a schematic cross-sectional front view showing a state in which the opening / closing part of the sheet conveying apparatus shown in FIG. 4 is opened. Since the basic configuration of this embodiment is the same as that of the first embodiment, common components are denoted by the same reference numerals as before, and description thereof is omitted.

本体２には、搬送ローラ２１と、垂直部ガイド部材２２と、合流部ガイド部材２３と、回転部材である搬送補助ローラ２４が設けられている。合流部ガイド部材２３は、図示しない弾性部材により開閉部３の方向へと付勢されている。開閉部３が閉じられている時には、合流部ガイド部材２３に設けられた突起２３ａが開閉部３の内壁面３ａに当接することにより、合流部ガイド部材２３は略垂直な状態を維持している。搬送補助ローラ２４は、給紙装置１０２から排出された用紙が、用紙搬送路ＰＬの垂直搬送部分に合流するような箇所、すなわち用紙搬送路ＰＬの方向転換箇所に設けられるようにして、合流部ガイド部材２３に取り付けられている。また用紙は、この搬送補助ローラ２４と開閉部３の内壁面３ａとの間を通る。   The main body 2 is provided with a conveyance roller 21, a vertical portion guide member 22, a merging portion guide member 23, and a conveyance auxiliary roller 24 that is a rotating member. The junction guide member 23 is biased toward the opening / closing part 3 by an elastic member (not shown). When the opening / closing part 3 is closed, the projection 23a provided on the joining part guide member 23 abuts against the inner wall surface 3a of the opening / closing part 3, so that the joining part guide member 23 is maintained in a substantially vertical state. . The conveyance auxiliary roller 24 is provided at a location where the paper discharged from the paper feeding device 102 merges with the vertical conveyance portion of the paper conveyance path PL, that is, at the direction change location of the paper conveyance path PL. The guide member 23 is attached. Further, the sheet passes between the conveyance auxiliary roller 24 and the inner wall surface 3 a of the opening / closing unit 3.

なお、搬送補助ローラ２４が取り付けられた合流ガイド部材２３を、開閉部３の方向へと付勢するための弾性部材には、圧縮ばねやねじりばね等を用いることができる。また、この付勢のための手段は、弾性部材利用のものに限られない。例えば、合流ガイド部材２３の突起２３ａが開閉部３側に突き出していることにより重心に偏りが生じ、これにより合流ガイド部材２３が開閉部３の方向に付勢されることとしても構わない。   In addition, a compression spring, a torsion spring, etc. can be used for the elastic member for urging the confluence | merging guide member 23 to which the conveyance auxiliary roller 24 was attached to the direction of the opening / closing part 3. Further, the means for biasing is not limited to that using an elastic member. For example, the protrusion 23 a of the merging guide member 23 protrudes toward the opening / closing part 3, so that the center of gravity is biased, and the merging guide member 23 may be biased in the direction of the opening / closing part 3.

開閉部３は、画像形成装置１００の背面側を支点とし、前面側を自由端として略水平面内で回動することにより、用紙搬送路ＰＬを露出可能にする。開閉部３には、従動ローラ３１が設けられている。   The opening / closing unit 3 rotates in a substantially horizontal plane with the back side of the image forming apparatus 100 as a fulcrum and the front side as a free end, thereby allowing the sheet conveyance path PL to be exposed. The opening / closing part 3 is provided with a driven roller 31.

ここで、開閉部３を開くと、これと同時に回転部材である搬送補助ローラ２４が開閉部３の開放方向へと付勢され、搬送補助ローラ２４を用紙搬送路ＰＬ上の所定の位置から引き離すことが可能となる。その結果、搬送補助ローラ２４と開閉部３との間で用紙ジャムが発生した場合、開閉部３を開くことによって自動的にこのジャム状態にある用紙Ｐを開閉部３の開放方向へと引き出すことができる。したがって、人が用紙Ｐを手で持って引き出す必要がないので、手間や時間が掛からない。   Here, when the opening / closing part 3 is opened, the conveyance auxiliary roller 24, which is a rotating member, is simultaneously urged in the opening direction of the opening / closing part 3, and the conveyance auxiliary roller 24 is pulled away from a predetermined position on the paper conveyance path PL. It becomes possible. As a result, when a paper jam occurs between the conveyance auxiliary roller 24 and the opening / closing unit 3, the paper P in this jammed state is automatically pulled out in the opening direction of the opening / closing unit 3 by opening the opening / closing unit 3. Can do. Accordingly, since it is not necessary for a person to pull out the paper P by hand, it does not take time and effort.

また、搬送補助ローラ２４に作用する開閉部３の開放方向への付勢が、弾性部材によってなされることで、開閉部３を開くことにより、搬送補助ローラ２４を開閉部３の開放方向へと勢いよく押すことができる。その結果、ジャム状態にある用紙Ｐを容易に引き出すことが可能となる。これにより、ジャム処理に対する作業をより効率的に進めることができる。さらに、弾性部材が、例えばコイルばねであれば、簡単な構造で搬送補助ローラ２４の、開閉部３の開放方向への付勢を実現することが可能である。また、製造コストも僅かである。   Also, the opening / closing part 3 acting on the conveyance auxiliary roller 24 is biased in the opening direction by an elastic member, so that the opening / closing part 3 is opened to move the conveyance auxiliary roller 24 in the opening direction of the opening / closing part 3. It can be pressed with force. As a result, it is possible to easily pull out the paper P in the jam state. Thereby, the operation | work with respect to a jam process can be advanced more efficiently. Further, if the elastic member is, for example, a coil spring, it is possible to realize the urging of the conveyance auxiliary roller 24 in the opening direction of the opening / closing unit 3 with a simple structure. Also, the manufacturing cost is small.

図６は、本発明の第４の実施形態に係る用紙搬送装置の開閉部を開いた状態を示す模型的断面正面図である。なお、この実施形態の基本的構成は、前記第３の実施形態と同じであるので、共通する構成要素には前と同じ符号を付し、説明は省略するものとする。   FIG. 6 is a schematic cross-sectional front view showing a state in which an opening / closing part of a sheet conveying apparatus according to a fourth embodiment of the present invention is opened. Since the basic configuration of this embodiment is the same as that of the third embodiment, common constituent elements are denoted by the same reference numerals as before and description thereof is omitted.

開閉部３は、画像形成装置１００の底面側を支点とし、上面側を自由端として略垂直面内で回動することにより、用紙搬送路ＰＬを露出可能にする。搬送補助ローラ２４は、本体２に設けられた合流部ガイド部材２３に取り付けられている。合流部ガイド部材２３は、図示しない弾性部材により開閉部３の開放方向へと付勢されている。   The opening / closing part 3 allows the sheet conveying path PL to be exposed by rotating in a substantially vertical plane with the bottom surface side of the image forming apparatus 100 as a fulcrum and the upper surface side as a free end. The conveyance auxiliary roller 24 is attached to a junction guide member 23 provided in the main body 2. The junction guide member 23 is biased in the opening direction of the opening / closing part 3 by an elastic member (not shown).

この場合においても、第３の実施形態と同様に、回転部材である搬送補助ローラ２４と開閉部３との間で用紙ジャムが発生した場合、図６に示すように、開閉部３を開くことによって回転部材である搬送補助ローラ２４が開閉部３の開放方向へと付勢され、自動的にこのジャム状態にある用紙Ｐを引き出すことができる。その結果、人が用紙Ｐを手で持って引き出す必要がないので、手間や時間が掛からない。   Also in this case, as in the third embodiment, when a paper jam occurs between the conveyance auxiliary roller 24, which is a rotating member, and the opening / closing unit 3, the opening / closing unit 3 is opened as shown in FIG. As a result, the conveyance auxiliary roller 24, which is a rotating member, is urged in the opening direction of the opening / closing section 3, and the jammed paper P can be automatically pulled out. As a result, since it is not necessary for a person to pull out the paper P by hand, it does not take time and effort.

上記のように本発明の実施形態を示したが、この他、発明の主旨を逸脱しない範囲で種々の変更を加えて実施することができる。   Although the embodiment of the present invention has been described above, various modifications can be made without departing from the spirit of the present invention.

本発明の構成によれば、回転部材と開閉部との間で用紙ジャムが発生した場合、開閉部を開くことによって自動的にこのジャム状態にある用紙を引き出すことができる。その結果、人が用紙を手で持って引き出す必要がないので、手間や時間が掛からない。さらに、回転部材は用紙の搬送を補助するように作られた形状であるので、用紙全体に均等な力を加えて引き出すことが可能である。これにより用紙の破損を抑えることができ、破損した細かい紙片が装置内に残ることもないので、装置に不具合が発生するのを防ぐことが可能である。   According to the configuration of the present invention, when a paper jam occurs between the rotating member and the opening / closing portion, the paper in this jammed state can be automatically pulled out by opening the opening / closing portion. As a result, since it is not necessary for a person to pull out the paper by hand, it does not take time and effort. Furthermore, since the rotating member has a shape designed to assist the conveyance of the sheet, it can be pulled out with an equal force applied to the entire sheet. As a result, the paper can be prevented from being damaged, and the damaged fine paper piece does not remain in the apparatus, so that the apparatus can be prevented from malfunctioning.

本発明は、複写機やプリンタ等の画像形成装置に備えられる用紙搬送装置において利用可能である。   The present invention can be used in a sheet conveying device provided in an image forming apparatus such as a copying machine or a printer.

本発明の第１の実施形態に係る用紙搬送装置を示す模型的断面正面図である。1 is a schematic cross-sectional front view showing a paper conveying apparatus according to a first embodiment of the present invention. 図１に示す用紙搬送装置の開閉部を開放した状態を示す模型的断面正面図である。FIG. 2 is a schematic cross-sectional front view showing a state in which an opening / closing part of the paper transport device shown in FIG. 1 is opened. 本発明の第２の実施形態に係る用紙搬送装置の開閉部を開いた状態を示す模型的断面正面図である。FIG. 6 is a schematic cross-sectional front view showing a state in which an opening / closing part of a paper conveying apparatus according to a second embodiment of the present invention is opened. 本発明の第３の実施形態に係る用紙搬送装置を示す模型的断面正面図である。FIG. 6 is a schematic cross-sectional front view showing a paper conveying apparatus according to a third embodiment of the present invention. 図４に示す用紙搬送装置の開閉部を開放した状態を示す模型的断面正面図である。FIG. 5 is a schematic cross-sectional front view showing a state in which an opening / closing part of the paper conveying apparatus shown in FIG. 4 is opened. 本発明の第４の実施形態に係る用紙搬送装置の開閉部を開いた状態を示す模型的断面正面図である。It is a model cross-section front view which shows the state which opened and closed the opening / closing part of the paper conveying apparatus which concerns on the 4th Embodiment of this invention. 本発明の用紙搬送装置を備える画像形成装置を示す模型的断面正面図である。1 is a schematic cross-sectional front view illustrating an image forming apparatus including a paper conveying device of the present invention.

符号の説明Explanation of symbols

１ 用紙搬送装置
２ 本体
３ 開閉部
２１ 搬送ローラ
２２ 垂直部ガイド部材
２３ 合流部ガイド部材
２４、３２ 搬送補助ローラ
３１ 従動ローラ
１００ 画像形成装置
１０２ 給紙装置 DESCRIPTION OF SYMBOLS 1 Paper conveyance apparatus 2 Main body 3 Opening / closing part 21 Conveyance roller 22 Vertical part guide member 23 Merge part guide member 24, 32 Conveyance auxiliary roller 31 Follower roller 100 Image forming apparatus 102 Paper feeding apparatus

Claims (7)

本体と開閉部とを備え、両者の間に、用紙を垂直方向に搬送する用紙搬送路を形成するとともに、前記開閉部が用紙搬送経路を露出可能にするものである用紙搬送装置において、
前記用紙搬送路は、その横方向に位置し、上下方向に並べて配置された複数の給紙装置から排出された用紙を受け取り、順次垂直上方へと搬送するものであって、給紙装置から排出された用紙が、用紙搬送路の垂直搬送部分に合流する箇所に、給紙装置から排出された用紙と、下方から垂直搬送されてきた用紙との、各々の用紙の搬送を補助する回転部材を、各々の用紙がこの回転部材と前記開閉部との間を通過するように設けるとともに、開閉部の開放に伴って、回転部材がこの開放方向へと移動することを特徴とする用紙搬送装置。 In a paper transport device comprising a main body and an opening / closing section, forming a paper transport path for transporting paper in the vertical direction between the main body and the opening / closing section, and enabling the opening / closing section to expose the paper transport path,
The paper conveyance path receives paper discharged from a plurality of paper feeders arranged in the horizontal direction and arranged in the vertical direction, and sequentially conveys the paper vertically upward, and is discharged from the paper feeder. Rotating members that assist the conveyance of each sheet of the sheet discharged from the sheet feeding device and the sheet vertically conveyed from below at a position where the collected sheet joins the vertical conveyance part of the sheet conveyance path A paper conveying apparatus, wherein each paper is provided so as to pass between the rotating member and the opening / closing portion, and the rotating member moves in the opening direction as the opening / closing portion is opened. 前記回転部材を、前記開閉部に設けたことを特徴とする請求項１に記載の用紙搬送装置。   The paper conveying apparatus according to claim 1, wherein the rotating member is provided in the opening / closing part. 前記回転部材を、前記本体に設けるとともに、回転部材を開閉部の開放方向へと付勢する付勢手段を設けたことを特徴とする請求項１に記載の用紙搬送装置。   2. The sheet conveying apparatus according to claim 1, wherein the rotating member is provided on the main body, and an urging unit that urges the rotating member in an opening direction of the opening / closing portion is provided. 前記付勢が、弾性部材によってなされることを特徴とする請求項３に記載の用紙搬送装置。   The paper conveying apparatus according to claim 3, wherein the urging is performed by an elastic member. 前記回転部材を、用紙搬送路の方向転換箇所に設けることを特徴とする請求項１ないし請求項４のいずれかに記載の用紙搬送装置。   The paper conveying apparatus according to claim 1, wherein the rotating member is provided at a direction changing portion of the paper conveying path. 前記開閉部が、略水平面内で回動することを特徴とする請求項１ないし請求項５のいずれかに記載の用紙搬送装置。   The sheet conveying device according to claim 1, wherein the opening / closing portion rotates in a substantially horizontal plane. 前記開閉部が、略垂直面内で回動することを特徴とする請求項１ないし請求項５のいずれかに記載の用紙搬送装置。   The sheet conveying apparatus according to claim 1, wherein the opening / closing portion rotates in a substantially vertical plane.
JP2007161008A 2007-06-19 2007-06-19 Paper sheets carrying device Pending JP2007233422A (en)

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JP2003059693A Division JP4141287B2 (en) 2003-03-06 2003-03-06 Paper transport device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010117731A (en) * 2008-09-29 2010-05-27 Canon Inc Color electrophotographic image forming apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010117731A (en) * 2008-09-29 2010-05-27 Canon Inc Color electrophotographic image forming apparatus

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