JP5278798B2 - Printing device - Google Patents

Printing device Download PDF

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JP5278798B2
JP5278798B2 JP2008245129A JP2008245129A JP5278798B2 JP 5278798 B2 JP5278798 B2 JP 5278798B2 JP 2008245129 A JP2008245129 A JP 2008245129A JP 2008245129 A JP2008245129 A JP 2008245129A JP 5278798 B2 JP5278798 B2 JP 5278798B2
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web
sensor
jam
tractor
light
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JP2010076162A (en
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祐樹 菊島
秀規 岩永
孝二 土井
俊秀 稲葉
雅弘 水野
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Ricoh Co Ltd
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Ricoh Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a printing apparatus which does not cause an erroneous detection of a sensor and is excellent in reliability. <P>SOLUTION: A transmission type web jam detecting sensor is positioned inside of the end part in the width direction of a paper and between a tractor pin guide in a tractor mechanism for conveying a web and a paper guide, and a pair of or a plurality of pairs of them are provided at positions where the distance h between the transmission type web jam detecting sensor for detecting the web jam and the web is 1-2 mm. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、連続的に搬送されるウェブに画像を形成する印刷装置のウェブ搬送機構に関するものである。   The present invention relates to a web transport mechanism of a printing apparatus that forms an image on a continuously transported web.

連続ウェブ上に画像を形成する印刷装置において、印刷装置に搭載したトラクタ機構のピン部材をウェブの送り穴に係合させ、トラクタ機構を駆動することによりウェブを搬送させている。しかし、ウェブのジャム等が発生した場合、トラクタ機構の部分でウェブが詰ってしまいウェブの搬送が不可能となることが発生していた。そのためトラクタ機構のウェブ搬送方向手前の位置で搬送機構の外側の固定された位置にウェブジャム検出センサを設けることによりウェブのジャムを検出できる構成が提案されている。   In a printing apparatus that forms an image on a continuous web, a web is conveyed by driving a tractor mechanism by engaging a pin member of a tractor mechanism mounted on the printing apparatus with a feed hole of the web. However, when a jam or the like of the web occurs, the web is clogged at the tractor mechanism, and the web cannot be conveyed. Therefore, a configuration has been proposed in which a web jam detection sensor is provided at a fixed position outside the transport mechanism at a position before the tractor mechanism in the web transport direction, thereby detecting a web jam.

実開昭56−5646号公報Japanese Utility Model Publication No. 56-5646

上記構成によりウェブのジャムが発生した場合に用紙と透過型ウェブジャム検出センサを接近させることにより、より早期にウェブの搬送が停止可能となる。しかし、透過型ウェブジャム検出センサをウェブに接近させると、ウェブのバタツキによる誤検出が発生するという課題があった。   When a web jam occurs due to the above configuration, the conveyance of the web can be stopped earlier by bringing the paper and the transmissive web jam detection sensor closer to each other. However, when the transmission type web jam detection sensor is brought close to the web, there is a problem that erroneous detection due to web fluttering occurs.

また、ウェブジャム検出センサが固定式である場合には該ウェブジャム検出センサに汚れが付着し、センサの誤検出が発生するという課題があった。   Further, when the web jam detection sensor is a fixed type, there is a problem in that dirt is attached to the web jam detection sensor and erroneous detection of the sensor occurs.

本発明の目的は、このような従来技術の欠点を解消し、センサの誤検出が発生しない、信頼性に優れた印刷装置を提供することにある。   An object of the present invention is to provide a highly reliable printing apparatus that eliminates the drawbacks of the prior art and does not cause erroneous detection of a sensor.

前記目的を達成するため、本発明は、ウェブに画像を記録形成する転写部と、該転写部にウェブを搬送するための搬送機構と、前記転写部でウェブに転写されたトナーを加熱ローラと加圧ローラで加熱・加圧しながらウェブに定着し、熱等の影響で蛇行するウェブの蛇行量を検出する蛇行検出センサと、該蛇行センサの出力でウェブの蛇行を補正する蛇行補正機構を有する定着機構と、前記転写部のウェブ搬送速度と定着機構のウェブ搬送速度との速度差を吸収し、且つウェブに張力を与えるバッファ機構とを有する印刷装置において、発光側の透過型ウェブジャム検出センサと受光側の透過型ウェブジャム検出センサとを具備し、発光側の透過型ウェブジャム検出センサと受光側の透過型ウェブジャムセンサを、共にウェブ幅方向の端部より内側で、且つウェブを搬送するためのトラクタ機構内部のトラクタピンガイドとウェブガイドの間であって、トラクタ機構の構成部品で開閉自在なトラクタカバに設け、前記発光側及び受光側の透過型ウェブジャム検出センサとウェブの距離が1〜2mmとなる位置に該透過型ウェブジャム検出センサを1対又は複数対設けたことを特徴とするものである。 To achieve the above object, the present onset Ming, heating a transfer unit for recording forms an image on the web, a transport mechanism for transporting the web to the transfer portion, the toner transferred to the web by the transfer unit roller And a meandering detection sensor for detecting the meandering amount of the web meandering under the influence of heat or the like while being heated and pressurized by a pressure roller, and a meandering correction mechanism for correcting the meandering of the web by the output of the meandering sensor. In a printing apparatus having a fixing mechanism, and a buffer mechanism that absorbs a speed difference between the web conveyance speed of the transfer unit and the web conveyance speed of the fixing mechanism and applies a tension to the web, transmission-type web jam detection on the light emission side ; and a transmissive web jam detecting sensor of the sensor and the light receiving side, transmission web jam detecting sensor of the light emitting side and the transmission web jam sensor on the light receiving side, the end portion of the web width direction together Inside, and be between the tractor mechanism inside the tractor pin guide and web guide for conveying the web, provided openable Torakutakaba in components of the tractor mechanism, transmission web jam of the light emitting side and light receiving side it is characterized in that the distance of the sensor and the web are provided one or more pairs of the transmission web jam detecting sensor in a position to be 1 to 2 mm.

また、本発明は、ウェブを搬送する搬送機構を有し、ウェブに画像を形成する印刷装置において、発光側の透過型ウェブジャム検出センサと受光側の透過型ウェブジャム検出センサとを具備し、発光側の透過型ウェブジャム検出センサと受光側の透過型ウェブジャムセンサを、共にウェブ幅方向の端部より内側で、且つウェブを搬送するためのトラクタ機構内部のトラクタピンガイドとウェブガイドの間であって、トラクタ機構の構成部品で開閉自在なトラクタカバに設け、前記発光側及び受光側の透過型ウェブジャム検出センサとウェブの距離が1〜2mmとなる位置に該透過型ウェブジャム検出センサを1対又は複数対設けたことを特徴とするものである。 Further, the present invention has a transport mechanism for transporting the web, and in the printing apparatus for forming an image on the web, includes a light-transmitting-side transmission web jam detecting sensor and a light-receiving-side transmitting web jam detecting sensor, The light-transmitting transmissive web jam detection sensor and the light-receiving transmissive web jam sensor are both inside the end in the web width direction and between the tractor pin guide and the web guide inside the tractor mechanism for transporting the web. The transmissive web jam detection sensor is provided at a position where the distance between the transmissive web jam detection sensor on the light emitting side and the light receiving side and the web is 1 to 2 mm. One or a plurality of pairs are provided .

また、上記各構成において、前記透過型ウェブジャムセンサとウェブガイドが、ウェブの上方で、且つ該ウェブに近接して設けられていると有利である。 In each of the above configurations, it is advantageous that the transmissive web jam sensor and the web guide are provided above the web and in proximity to the web .

本発明は前述のような構成になっており、センサの誤検出が発生しない、信頼性に優れた印刷装置を提供することができる。   The present invention is configured as described above, and can provide a printing apparatus with excellent reliability that does not cause erroneous sensor detection.

以下、本発明の実施例について図面を用いて説明する。本発明の一実施例を図1に示す。ウェブ搬送機構は、図1に示すようにウェブ1の搬送手段を構成するトラクタ機構2,3が対になって設置される。本発明では該透過型ウェブジャム検出センサ4,5を、用紙幅方向の端部より内側で、且つ該ウェブ1を搬送するためのトラクタ機構内部のトラクタピンガイド10と用紙ガイドの間11に位置させ、且つ該ウェブ1のジャムを検出する該透過型ウェブジャム検出センサ4,5と該ウェブ1の距離hが1〜2mmとなる位置に対で設置している。そして、該ウェブ1のジャムが発生した場合、センサ光軸9を該ウェブ1が遮りジャムを検出する機構とした。   Embodiments of the present invention will be described below with reference to the drawings. An embodiment of the present invention is shown in FIG. As shown in FIG. 1, the web transport mechanism is installed with a pair of tractor mechanisms 2 and 3 constituting a transport means for the web 1. In the present invention, the transmission type web jam detection sensors 4 and 5 are positioned on the inner side of the end in the sheet width direction and between the tractor pin guide 10 and the sheet guide 11 in the tractor mechanism for conveying the web 1. The transmission web jam detection sensors 4 and 5 for detecting the jam of the web 1 and the web 1 are installed in pairs at a distance h of 1 to 2 mm. When the jam of the web 1 occurs, the sensor optical axis 9 is used as a mechanism for the web 1 to block the jam.

また、該透過型ウェブジャム検出センサ4,5を該トラクタ機構2,3の構成品で自在に開閉する機構を有するトラクタドア7,8に設け、該トラクタドア7,8に同期して自在に開閉する機構とした。   Further, the transmission type web jam detection sensors 4 and 5 are provided on the tractor doors 7 and 8 having a mechanism for freely opening and closing with the components of the tractor mechanisms 2 and 3, and can be freely synchronized with the tractor doors 7 and 8. A mechanism for opening and closing was adopted.

さらに、ウェブジャムが発生した場合に搬送を停止させる該透過型ウェブジャム検出センサ4,5は、センサ光の半値全角時の水平方向指向角θhが4〜8度で、且つ垂直方向の指向角θvが4〜8度である透過型センサ4,5を使用する機構とした。   Further, the transmission type web jam detection sensors 4 and 5 that stop the conveyance when the web jam occurs have a horizontal directivity angle θh of 4 to 8 degrees when the sensor light has a full angle at half maximum, and a vertical directivity angle. The transmission sensor 4 or 5 having a θv of 4 to 8 degrees is used.

以上説明したように、本発明によれば透過型ウェブジャム検出センサを、用紙幅方向の端部より内側に位置させ、且つウェブを搬送するためのトラクタ機構内部のトラクタピンガイドと用紙ガイドの間に位置させ、且つウェブのジャムを検出する透過型ウェブジャム検出センサとウェブの距離hが1〜2mmとなる位置に1対又は複数対取付けたことにより、ウェブのバタツキによる誤検出が発生することを防止出来る。   As described above, according to the present invention, the transmissive web jam detection sensor is positioned inside the end in the paper width direction, and between the tractor pin guide and the paper guide inside the tractor mechanism for transporting the web. 1 and a pair of a web-type web jam detection sensor for detecting a web jam and a web distance h of 1 to 2 mm are attached to a position where one or a plurality of pairs are attached, and erroneous detection due to web fluttering occurs. Can be prevented.

また、トラクタ機構の構成部品で開閉自在に設けられたトラクタカバに透過型ウェブジャム検出センサを取付けることにより透過型ウェブジャム検出センサの検出面を容易に清掃出来るため透過型ウェブジャム検出センサに汚れが付着し、センサの誤検出が発生することを防止出来る。   In addition, the transmissive web jam detection sensor can be easily cleaned by attaching the transmissive web jam detection sensor to the tractor cover that can be opened and closed by the components of the tractor mechanism. It is possible to prevent adhesion and misdetection of the sensor.

さらに、トラクタドアと透過型ウェブジャム検出センサが同期して自在に開閉するため、トラクタドア開閉時の衝撃により透過型ウェブジャム検出センサに汚れが付着することを防止出来る。   Furthermore, since the tractor door and the transmissive web jam detection sensor can be freely opened and closed synchronously, it is possible to prevent dirt from being attached to the transmissive web jam detection sensor due to an impact when the tractor door is opened and closed.

また、ウェブジャム検出センサに使用するセンサを、センサ光の半値全角時の水平方向指向角θhが4〜8度で、且つ垂直方向の指向角θvが4〜8度である透過型センサを使用することで、センサの調整が困難であるということを防止できる。   In addition, the sensor used for the web jam detection sensor is a transmissive sensor having a horizontal directivity angle θh of 4 to 8 degrees and a vertical directivity angle θv of 4 to 8 degrees when the sensor beam is full-width at half maximum. By doing so, it is possible to prevent the adjustment of the sensor from being difficult.

本発明の実施例に係る印刷装置の斜視図である。1 is a perspective view of a printing apparatus according to an embodiment of the present invention. その印刷装置の断面図であるIt is sectional drawing of the printing apparatus

符号の説明Explanation of symbols

1:ウェブ、2:トラクタ機構、3:トラクタ機構、4:透過型ウェブジャム検出センサ(発光側)、 5:透過型ウェブジャム検出センサ(受光側)、6:ピン部材、7:トラクタドア、8:トラクタドア、9:センサ光軸、10:トラクタピンガイド、11:用紙ガイド、12:センサ指向角。   1: Web, 2: Tractor mechanism, 3: Tractor mechanism, 4: Transmission type web jam detection sensor (light emitting side), 5: Transmission type web jam detection sensor (light receiving side), 6: Pin member, 7: Tractor door, 8: Tractor door, 9: Sensor optical axis, 10: Tractor pin guide, 11: Paper guide, 12: Sensor directivity angle.

Claims (3)

ウェブに画像を記録形成する転写部と、該転写部にウェブを搬送するための搬送機構と、前記転写部でウェブに転写されたトナーを加熱ローラと加圧ローラで加熱・加圧しながらウェブに定着し、熱等の影響で蛇行するウェブの蛇行量を検出する蛇行検出センサと、該蛇行センサの出力でウェブの蛇行を補正する蛇行補正機構を有する定着機構と、前記転写部のウェブ搬送速度と定着機構のウェブ搬送速度との速度差を吸収し、且つウェブに張力を与えるバッファ機構とを有する印刷装置において、
発光側の透過型ウェブジャム検出センサと受光側の透過型ウェブジャム検出センサとを具備し、発光側の透過型ウェブジャム検出センサと受光側の透過型ウェブジャムセンサを、共にウェブ幅方向の端部より内側で、且つウェブを搬送するためのトラクタ機構内部のトラクタピンガイドとウェブガイドの間であって、トラクタ機構の構成部品で開閉自在なトラクタカバに設け、前記発光側及び受光側の透過型ウェブジャム検出センサとウェブの距離が1〜2mmとなる位置に該透過型ウェブジャム検出センサを1対又は複数対設けたことを特徴とする印刷装置。
A transfer unit that records and forms an image on the web, a transport mechanism for transporting the web to the transfer unit, and the toner transferred to the web by the transfer unit while being heated and pressed by a heating roller and a pressure roller. A fixing sensor having a meandering detection sensor for detecting the meandering amount of the web that is fixed and meandering under the influence of heat, etc., a meandering correction mechanism for correcting the meandering of the web by the output of the meandering sensor, and the web conveyance speed of the transfer unit And a buffer mechanism that absorbs a difference in speed between the web conveyance speed of the fixing mechanism and tensions the web.
A light transmission side transmission web jam detection sensor and a light reception side transmission web jam detection sensor, and the light transmission side transmission web jam detection sensor and the light reception side transmission web jam sensor are both connected to the end in the web width direction. A tractor cover inside the tractor mechanism for conveying the web and between the tractor pin guide and the web guide , provided on the tractor cover that can be opened and closed by the components of the tractor mechanism. printing apparatus characterized by distance of the web jam detecting sensor and the web are provided one or more pairs of the transmission web jam detecting sensor in a position to be 1 to 2 mm.
ウェブを搬送する搬送機構を有し、ウェブに画像を形成する印刷装置において、発光側の透過型ウェブジャム検出センサと受光側の透過型ウェブジャム検出センサとを具備し、発光側の透過型ウェブジャム検出センサと受光側の透過型ウェブジャムセンサを、共にウェブ幅方向の端部より内側で、且つウェブを搬送するためのトラクタ機構内部のトラクタピンガイドとウェブガイドの間であって、トラクタ機構の構成部品で開閉自在なトラクタカバに設け、前記発光側及び受光側の透過型ウェブジャム検出センサとウェブの距離が1〜2mmとなる位置に該透過型ウェブジャム検出センサを1対又は複数対設けたことを特徴とする印刷装置。 In a printing apparatus having a transport mechanism for transporting a web and forming an image on the web, the transmissive web jam detecting sensor on the light emitting side and the transmissive web jam detecting sensor on the light receiving side are provided, and the transmissive web on the light emitting side is provided. The jam detection sensor and the light-receiving side transmission type web jam sensor are both inside the end in the web width direction and between the tractor pin guide and the web guide inside the tractor mechanism for transporting the web, the tractor mechanism One or more pairs of transmissive web jam detection sensors are provided at positions where the distance between the light transmission side and light reception side transmission web jam detection sensors and the web is 1 to 2 mm. A printing apparatus characterized by that. 前記透過型ウェブジャムセンサとウェブガイドが、ウェブの上方で、且つ該ウェブに近接して設けられている請求項1または2に記載の印刷装置。 The printing apparatus according to claim 1, wherein the transmissive web jam sensor and the web guide are provided above and in proximity to the web .
JP2008245129A 2008-09-25 2008-09-25 Printing device Expired - Fee Related JP5278798B2 (en)

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