JP2006248667A - Paper width detector, roll paper feeder, and image forming device - Google Patents

Paper width detector, roll paper feeder, and image forming device Download PDF

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JP2006248667A
JP2006248667A JP2005066506A JP2005066506A JP2006248667A JP 2006248667 A JP2006248667 A JP 2006248667A JP 2005066506 A JP2005066506 A JP 2005066506A JP 2005066506 A JP2005066506 A JP 2005066506A JP 2006248667 A JP2006248667 A JP 2006248667A
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paper
width
slider
roll paper
detection
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Takahiro Shinga
祟浩 信賀
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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 paper width detector to detect the width of a roll paper capable of detecting the paper width with excellent accuracy by necessary minimum detection means. <P>SOLUTION: A tip of a roll paper set in a tray is cut by a cutter part by the action of a slider 28. During the cutting, the output signal of a reflection type sensor 29 is detected to measure the time in a detected state/non-detected state. The square detection signal is detected according to the shape of both ends 31 to recognize the home position. When the roll paper 2 is re-wound to the waiting position, the slider 28 is reciprocated in an idling manner to measure the time of movement. The paper width can be obtained simply by the time ratio. When the accuracy is required, the load according to presence/absence of the roll paper cutting is taken into consideration. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、ロール紙を用いて記録紙を作成する画像形成装置において用いるのに適する、サイズの異なるロール紙を給送するロール紙給紙装置に関し、詳細にはロール紙の幅を検知する紙幅検知装置に関する。   The present invention relates to a roll paper feeding device that feeds roll paper of different sizes, which is suitable for use in an image forming apparatus that creates recording paper using roll paper, and more specifically, a paper width for detecting the width of the roll paper. The present invention relates to a detection device.

従来、上述のような画像形成装置、ロール紙給紙装置におけるロール紙の幅検出は、使用可能なロール紙幅に対応した最低限数の検出手段を搬送路に並べ、ここにロール紙を通過させることで対応してきた。しかし、用紙サイズ(幅)は、A/B列、インチ(inch)系を含めて数が多く、扱う紙幅が大きくなればなる程、検知手段の数が増えていく傾向にある。もちろん、検知手段の数が増えるほど、検知の信頼性が低下し、ダメージを受ける率が多くなる。   Conventionally, the width detection of the roll paper in the image forming apparatus and the roll paper feeding apparatus as described above is arranged with a minimum number of detection means corresponding to the usable roll paper width on the conveyance path, and the roll paper is passed therethrough. It has responded by. However, the paper size (width) has a large number including A / B rows and inch systems, and the number of detection means tends to increase as the paper width handled increases. Of course, as the number of detection means increases, the reliability of detection decreases and the rate of damage increases.

したがって従来は、大きくサイズ系列を事前に指定して検出手段数を減らしたり、1箇所の検出場所で、多数のロール段に対応できるように共通搬送路に検出手段を並べたり等の工夫をしてきた。しかし、前者の切換方式では、操作者に頼るために人為的ミスが避けられず、後者の配置では、少なくとも対応紙幅分の検出手段が必要であり、必ずしも信頼性向上につながらなかった。   Therefore, conventionally, the size series is designated in advance and the number of detection means is reduced, or the detection means are arranged on a common conveyance path so that it can cope with a large number of roll stages at one detection place. It was. However, in the former switching method, human error is unavoidable because it relies on the operator, and in the latter arrangement, detection means for at least the corresponding paper width is necessary, and this does not necessarily lead to improvement in reliability.

本発明は、上述のような画像形成装置、ロール紙給紙装置でロール紙の幅を検知する紙幅検知装置として用いる装置において、必要最小数に検出手段により、且つ精度良く紙幅を検出できるようにする手段を提供することを目的とする。   According to the present invention, in the apparatus used as the paper width detecting device for detecting the width of the roll paper by the image forming apparatus and the roll paper feeding apparatus as described above, the paper width can be detected with high accuracy by the detection means to the minimum necessary number. It aims at providing the means to do.

本発明に係る紙幅検知装置は、給紙装置から給送するロール紙を切断する移動刃を、スライダを用いて用紙幅方向に往復摺動させるロール紙給紙装置の切断装置に用いて前記ロール紙の幅を検出するための紙幅検知装置であって、前記スライダに用紙検知手段を設け、該用紙検知手段の前記スライダ移動時の用紙検出時間を計測し、該計測時間より前記ロール紙の幅を算出することを特徴とする。   The paper width detection device according to the present invention uses the moving blade that cuts the roll paper fed from the paper feeding device to the cutting device of the roll paper feeding device that reciprocally slides in the paper width direction using a slider. A paper width detection device for detecting a paper width, wherein the slider is provided with a paper detection means, and the paper detection time when the slider of the paper detection means is moved is measured, and the width of the roll paper is determined from the measurement time. Is calculated.

また本発明に係る紙幅検知装置は、複写機、プリンタ等に設けられたロール紙を給送する給紙装置であって、用紙を任意長さに切断する切断装置を有し、該切断装置が、固定刃と、これに当接して用紙を切断する移動刃と、該移動刃を保持して前記ロール紙の幅方向に摺動するスライダと、該スライダの駆動手段で構成されるシャトルカッター方式であり、前記スライダに用紙検知手段を設け、前記スライダ移動時の用紙検出時間を計測し、該計測時間より前記ロール紙の幅を算出することを特徴とする。   The paper width detecting device according to the present invention is a paper feeding device that feeds roll paper provided in a copying machine, a printer, etc., and has a cutting device that cuts the paper into an arbitrary length. A shuttle cutter system comprising a fixed blade, a moving blade that abuts against this to cut the paper, a slider that holds the moving blade and slides in the width direction of the roll paper, and a drive means for the slider The paper detection means is provided in the slider, the paper detection time when the slider is moved is measured, and the width of the roll paper is calculated from the measurement time.

本発明に係る紙幅検知装置は、前記用紙検知手段が非接触型のセンサであることを特徴とする。   The paper width detection apparatus according to the present invention is characterized in that the paper detection means is a non-contact type sensor.

本発明に係る紙幅検知装置は、前記スライダ上に設けられた用紙検知手段は、前記スライダの可動範囲両端部の非切断領域の位置検出を兼ねるものであることを特徴とする。   In the paper width detecting apparatus according to the present invention, the paper detecting means provided on the slider also serves to detect the positions of the non-cutting regions at both ends of the movable range of the slider.

本発明に係る紙幅検知装置は、前記用紙検知手段に光学式の反射型センサを用い、かつ前記スライダの可動範囲両端部の非切断領域において該反射型センサをクリーニングする手段を有することを特徴とする。   The paper width detecting device according to the present invention is characterized in that an optical reflective sensor is used as the paper detecting means, and the reflective sensor is cleaned in non-cut regions at both ends of the movable range of the slider. To do.

本発明に係るロール紙給紙装置は、前記いずれかの紙幅検知装置を用いたことを特徴とする。   A roll paper feeding device according to the present invention uses any one of the paper width detection devices described above.

また本発明に係る画像形成装置は、請求項1から5のいずれかの紙幅検知装置を用い、あるいは前記ロール紙給紙装置を用いたことを特徴とする。   An image forming apparatus according to the present invention is characterized in that the paper width detecting device according to any one of claims 1 to 5 is used, or the roll paper feeding device is used.

本発明は、ロール紙を用いる画像形成装置や、ロール紙の給紙装置で、ロール紙の幅を必要最小数の検出手段により精度良く検出できる。   The present invention can accurately detect the width of a roll paper by a minimum necessary number of detecting means in an image forming apparatus using roll paper or a roll paper feeding device.

以下本発明を実施するための最良の形態を、図に示す実施例を参照して説明する。   The best mode for carrying out the present invention will be described below with reference to the embodiments shown in the drawings.

図1は、本発明を適用する画像形成装置の一例である複写機等の装置本体の概略図である。この装置には、引き出し式の給紙トレイ1が設けてあり、ロール紙2は、引き出した状態で上方または前方からセットでき、既知のロール紙支持方法でトレイ1にセットする。ロール紙2は、フィードローラ対3により引き出して搬送する。トレイ内部の搬送路出口付近には、後述する回転歯スライド式(=以下シャトルカッター)で構成するカッター部4が設けてあり、ロール紙2はここで所定の長さに切断する。カッター部4を通過したロール紙は、装置本体内部の搬送路を通してレジストローラ5で作像タイミングとの同期を取り、転写部6でトナー画像を転写し、その後に定着部7で画像を熱定着させ、機外へ排出する。また原稿読み取り部8では、原稿の搬送、読み取り、感光体への露光を行う。なお、以上の説明は、下段トレイ(ロール紙1本セット構成)で行ったが、上段(2本セット)のトレイにおいても、カッター部を共有する以外は同様である。   FIG. 1 is a schematic view of a main body of a copying machine or the like as an example of an image forming apparatus to which the present invention is applied. This apparatus is provided with a drawer-type paper feed tray 1, and the roll paper 2 can be set from above or from the front in the pulled-out state, and is set on the tray 1 by a known roll paper support method. The roll paper 2 is pulled out and conveyed by the feed roller pair 3. In the vicinity of the exit of the conveyance path inside the tray, there is provided a cutter unit 4 constituted by a rotating tooth slide type (hereinafter referred to as shuttle cutter) described later, and the roll paper 2 is cut into a predetermined length here. The roll paper that has passed through the cutter unit 4 is synchronized with the image forming timing by the registration roller 5 through the conveyance path inside the apparatus main body, the toner image is transferred by the transfer unit 6, and then the image is thermally fixed by the fixing unit 7. And discharge it outside the machine. The document reading unit 8 conveys and reads the document, and exposes the photosensitive member. Although the above description has been made with the lower tray (one roll paper set configuration), the upper tray (two paper sets) is the same except that the cutter unit is shared.

図2は、給紙トレイ1の模式図を示す。スプール等の既知の手段によりセットしたロール紙2の搬送方向に向けて、フィードローラ対3、反射型検知方式である用紙検知センサ9、カッター部4、用紙検知センサ10が設けてある。これらをつなぐように搬送ガイド板が設けてある。本例の装置では、オートフィード機構を有し、ロール紙セット後に操作者が給紙トレイ1を装置本体にセットした後、各ロール紙に対応するフィードローラ対3を順次自動的に駆動し、該当するロール紙2を引き出し、用紙検知センサ9でロール紙有無を検出後、所定長さをカッター4切断部より突出させ、搬送を停止し、次いでカッター4でロール紙2を切断後、先端切断紙を装置本体内部の搬送路を通し、排出する制御を行う。なお、先端を切り揃えたロール紙2自体は、切断部より所定長さ引き戻され、装置本体からの制御に対して待機する。   FIG. 2 is a schematic diagram of the paper feed tray 1. A feed roller pair 3, a paper detection sensor 9 that is a reflection type detection system, a cutter unit 4, and a paper detection sensor 10 are provided in the conveying direction of the roll paper 2 set by a known means such as a spool. A conveyance guide plate is provided so as to connect them. The apparatus of this example has an auto-feed mechanism, and after the roll paper is set, the operator sets the paper feed tray 1 on the apparatus main body, and then automatically drives the feed roller pair 3 corresponding to each roll paper sequentially. After the corresponding roll paper 2 is pulled out and the presence or absence of the roll paper is detected by the paper detection sensor 9, a predetermined length is projected from the cutting section of the cutter 4, the conveyance is stopped, and then the roll paper 2 is cut by the cutter 4 and then the leading edge is cut. Control is performed to discharge the paper through the conveyance path inside the apparatus main body. Note that the roll paper 2 itself with the leading edges aligned is pulled back by a predetermined length from the cutting unit and waits for control from the apparatus main body.

図3は、給紙トレイ1の主要構成の斜視図である。フィードローラ対3の駆動側の一端には、手動でロール紙2の先端をセットする際、フォードローラ3を回転させるためのノブ14が取り付けてある。また他端は、ギヤ15、16で駆動モータ13に連結し、モータ駆動系がつながるようになっている。駆動回路は、制御部Crを中心に各要素に、カッター駆動回路Dc、モータ駆動回路Dm等をつなげて接続してある。また、装置本体での入力手段である操作部Opにも接続し、ここからカット長さ等の情報を入力することができるようになっている。   FIG. 3 is a perspective view of the main configuration of the paper feed tray 1. A knob 14 for rotating the Ford roller 3 is attached to one end of the feed roller pair 3 on the driving side when the leading end of the roll paper 2 is manually set. The other end is connected to the drive motor 13 by gears 15 and 16 so that the motor drive system is connected. The drive circuit is connected by connecting a cutter drive circuit Dc, a motor drive circuit Dm, and the like to each element with the controller Cr as a center. Further, it is also connected to an operation unit Op which is an input means in the apparatus body, and information such as a cut length can be input from here.

図4、図5は、カッター部4(シャトルカッター)の説明図である。図4は断面図、図5は斜視図である。まず構成について説明する。用紙2は、用紙幅方向に設けた固定刃17と回転刃18とで挟んで切断する。固定刃17は、用紙ガイドを兼ねたフレーム19に固定する。一方、回転刃18は、支軸20で回転自由にスライダブラケット21に取り付け、固定刃17との接触抵抗により動作時に回転する。スライダブラケット21には、同様に回転自由に支持したガイドコロ22が複数個設けてあり、ガイドレールと用紙ガイドの形状を兼ねたスライダフレーム23に支持してある。   4 and 5 are explanatory diagrams of the cutter unit 4 (shuttle cutter). 4 is a cross-sectional view, and FIG. 5 is a perspective view. First, the configuration will be described. The paper 2 is cut by being sandwiched between a fixed blade 17 and a rotary blade 18 provided in the paper width direction. The fixed blade 17 is fixed to a frame 19 that also serves as a paper guide. On the other hand, the rotary blade 18 is attached to the slider bracket 21 so as to be freely rotatable by the support shaft 20, and rotates during operation by contact resistance with the fixed blade 17. Similarly, the slider bracket 21 is provided with a plurality of guide rollers 22 supported so as to freely rotate, and is supported by a slider frame 23 that also serves as a guide rail and a paper guide.

またスライダブラケット21には、ワイヤ24が取り付けてあり、ギヤプーリ25及びプーリ26で支持する。ギヤプーリ25は、モータ27と連結し、モータ27の回転がギヤプーリ25を介してワイヤ24、スライダ28(スライダブラケット21〜回転刃18、後述する反射型センサ29等一体の構成を示す)へと伝わる。回転刃18の図中上方には、反射型センサ29がブラケット30を介して取り付けてあり、用紙2の検出を行うようになっている。   A wire 24 is attached to the slider bracket 21 and is supported by a gear pulley 25 and a pulley 26. The gear pulley 25 is connected to the motor 27, and the rotation of the motor 27 is transmitted to the wire 24 and the slider 28 (showing an integrated configuration such as the slider bracket 21 to the rotary blade 18, a reflection type sensor 29 described later) via the gear pulley 25. . Above the rotary blade 18 in the figure, a reflective sensor 29 is attached via a bracket 30 to detect the paper 2.

フレーム19の用紙排出側は、反射型センサ29の反射面となっており、両端部31とそれ以外の部分32の形状が異なっている。両端部31では、反射型センサ29の検知面に平行面を構成し、用紙がある場合と同様、反射光が検出できる。それ以外の部分32においては傾斜が付けてあり、反射光が受光部に戻らず上方に逃げて非検出状態となる。また両端部31のさらに外側には、ブラシ33が設けてあり、スライダ28が端部に移動した際、反射型センサ29の発光/受光面に当接させ、紙紛等汚れを除去することができるようになっている。   The paper discharge side of the frame 19 is a reflection surface of the reflection type sensor 29, and the shapes of both end portions 31 and other portions 32 are different. At both ends 31, a parallel surface is formed on the detection surface of the reflective sensor 29, and reflected light can be detected as in the case where there is a sheet. The other portion 32 is inclined, and the reflected light does not return to the light receiving portion but escapes upward and enters a non-detection state. Further, a brush 33 is provided on the outer side of the both end portions 31. When the slider 28 moves to the end portion, it is brought into contact with the light emitting / receiving surface of the reflective sensor 29 to remove dirt such as paper dust. It can be done.

またフレーム19、スライダフレーム23は、側板34で位置を固定してあり、かつトレイ1に連結している。通常シャトルカッターは、モータ27を正逆転させることで移動方向の両方向で用紙を切断できる。スライダ28の動作範囲の両端には、HP(ホームポジション)検知センサが設けてあり、通常動作中のスライダ28が、HP検知センサで検出されることで動作範囲の終端を認識し、モータ27の動作をオフとし、ブレーキを掛けて停止し、次の切断(逆方向に動作する)に待機する。   The positions of the frame 19 and the slider frame 23 are fixed by side plates 34 and are connected to the tray 1. Normally, the shuttle cutter can cut the paper in both directions of movement by rotating the motor 27 forward and backward. HP (home position) detection sensors are provided at both ends of the operation range of the slider 28, and the slider 28 during normal operation is detected by the HP detection sensor to recognize the end of the operation range. Turn off the operation, apply the brake, stop, and wait for the next disconnection (operating in the reverse direction).

本例では、このスライダ28上に反射型センサ29を設け、スライダ28動作中に、反射型センサ29の検出結果(用紙の有無など)を把握できる構成としてある。また、反射型の検知手段を用いることで、切断される用紙に一切ストレスを与えることがなく、装置本体のカッターの機能に何ら影響を与えないようにしてある。   In this example, a reflection type sensor 29 is provided on the slider 28, and the detection result of the reflection type sensor 29 (such as the presence or absence of paper) can be grasped during the operation of the slider 28. Further, by using the reflection type detection means, no stress is applied to the cut paper, and the function of the cutter of the apparatus main body is not affected at all.

図6、図7により本実施例の動作について説明する。図6は、サイズ(幅)検知のフロー図、図7は用紙切断時の反射型センサ29の出力図を示す。   The operation of this embodiment will be described with reference to FIGS. FIG. 6 is a flow chart of size (width) detection, and FIG. 7 is an output diagram of the reflective sensor 29 at the time of paper cutting.

フロー図の流れに沿って説明する。まずロール紙2をトレイ1にセットし(ステップ1)、操作者がトレイ1を装置本体にセットすると、前述のオートフィードプロセスに従ってロール紙2がフィードローラ対3でカッター部4へと送りこまれた後、搬送が一時停止する(ステップ2)。搬送停止後、カッター部駆動手段によりスライダ28が動作(例では左→右とした)し、用紙先端を切断する(ステップ3)。なおカッター駆動系には、装置本体からの指令によりモータ27の制御、演算を行う制御部Crに加えて反射型センサ29の検知状態を観察し時間を測定するカウンタCtを有し、カッター駆動後の用紙切断時、反射型センサ29の出力信号を検出し、カウンタCtで検知/非検知状態の時間カウントを実施するようになっている(図7中の用紙切断時の図に示す)。   It demonstrates along the flow of a flowchart. First, the roll paper 2 is set on the tray 1 (step 1). When the operator sets the tray 1 on the apparatus main body, the roll paper 2 is fed to the cutter unit 4 by the feed roller pair 3 according to the above-described auto feed process. Thereafter, the conveyance is temporarily stopped (step 2). After the conveyance stops, the slider 28 is operated by the cutter unit driving means (in the example, left → right) to cut the leading edge of the paper (step 3). The cutter drive system has a counter Ct for observing the detection state of the reflective sensor 29 and measuring the time in addition to the control unit Cr for controlling and calculating the motor 27 according to a command from the apparatus main body. When the paper is cut, the output signal of the reflective sensor 29 is detected, and the counter Ct counts the time in the detection / non-detection state (shown in FIG. 7 when the paper is cut).

本例の構成では、両端部31の形状により、ここでは方形の検知信号が検出され、この波形をHP信号とし認識させることで、別途にスイッチ等を付けてHP検知を行う必要を無くしている。このように、検出される両端のHP検知間の動作時間をT1、その詳細として、動作開始〜用紙切り始め端までをt2、用紙幅に該当する部分をt1、用紙切り終わり端〜他端HPまでをt3に分解し(すなわちT1=t1+t2+t3の関係)、時間カウントがなされるようになっている。   In the configuration of this example, a square detection signal is detected here due to the shape of both end portions 31, and by recognizing this waveform as an HP signal, it is not necessary to separately perform HP detection by attaching a switch or the like. . As described above, the detected operation time between the HP detections at both ends is T1, and the details thereof are t2 from the operation start to the sheet cutting start end, t1 corresponding to the sheet width, and the sheet cutting end end to the other end HP. Is divided into t3 (that is, a relationship of T1 = t1 + t2 + t3), and the time is counted.

次いで、切断された用紙先端片が、装置本体の搬送路を通って排出され、同時に、先端を切断され、揃えられたロール紙2が、待機位置まで巻き戻され、オートフィードプロセスが終了する(ステップ4、5)。   Next, the cut sheet tip piece is discharged through the conveyance path of the apparatus main body, and at the same time, the leading end is cut and the aligned roll paper 2 is rewound to the standby position, and the auto feed process is completed ( Steps 4, 5).

そして待機後、スライダ28をHP間で、右→左、左→右と動作させ(ステップ6)、用紙切断時と同じ方向(左→右)移動時のHP間の移動時間を、カウンタCtで同様に測定する(図7中、空切り時の図に示す)。この時の動作時間をT0とする。   Then, after waiting, the slider 28 is operated from right to left and left to right between HPs (step 6), and the movement time between HPs when moving in the same direction (left to right) as when cutting the paper is counted by a counter Ct. Measure similarly (shown in FIG. 7 when empty). The operating time at this time is T0.

単純に用紙幅を算出する際、HP間の距離をW0とすれば、簡易には、時間比で求めればおよその判断ができる。即ち用紙幅は、切断に要した時間t1をHP間の駆動に要した時間T1で除し、HP間の距離W0を乗じて算出できる。すなわち、用紙幅=(t1/T1)×W0となり、セットできるロール紙2の用紙幅の種類が少なく、似通った幅がありえない場合、これで十分に判別が可能となる。   When the paper width is simply calculated, if the distance between HP is W0, a simple determination can be made simply by obtaining the time ratio. That is, the paper width can be calculated by dividing the time t1 required for cutting by the time T1 required for driving between HPs and multiplying by the distance W0 between HPs. That is, paper width = (t1 / T1) × W0, and there are few kinds of paper widths of the roll paper 2 that can be set, and when there is no similar width, it is possible to sufficiently discriminate this.

いっそうの精度を求める場合には、用紙を切断していない(空切り)時と用紙を切断している時では、切断部に掛かる負荷が異なるため、スライダ28の移動速度が異なり、一般的にT1>T0となることを考慮しなければならない。この場合、用紙幅w1を得る場合、空切り時(T0、t2、t3)のスライダ28移動速度は同一であると仮定し、前記t1を切断に要する負荷が無い場合=空切りに相当する時間(t1')に置き換え、求めると、t1'=T0−(t2+t3)となり、用紙幅w1は、w1=(t1'/T0)×W0=((T0−(t2+t3))/T0)×W0で求まる。   When further accuracy is required, the load applied to the cutting portion differs between when the paper is not cut (empty cut) and when the paper is cut, and therefore the moving speed of the slider 28 is different. It must be considered that T1> T0. In this case, when the paper width w1 is obtained, it is assumed that the moving speed of the slider 28 at the time of idle cutting (T0, t2, t3) is the same, and when t1 has no load required for cutting = time corresponding to empty cutting When replaced with (t1 ′), t1 ′ = T0− (t2 + t3), and the paper width w1 is w1 = (t1 ′ / T0) × W0 = ((T0− (t2 + t3)) / T0) × W0. I want.

この方法で用紙幅を検出することで、より精度の高い検出ができ、今までサイズが似通っていたために検出が難しかったインチ系(ansi/arch)やA/B列の同時検出も可能となる。さらにカッター毎に微妙に異なるスライダ速度差や、経時で変化する速度の影響を吸収し、誤差を排除することも可能となる。   By detecting the paper width by this method, more accurate detection can be performed, and simultaneous detection of inch systems (anis / arch) and A / B rows, which have been difficult to detect because of their similar sizes, is also possible. . Further, it is possible to eliminate the error by absorbing the effect of the slightly different slider speed difference for each cutter and the speed changing with time.

また、左→右の切断方向に対し、右→左についても同様に速度を計測し、幅を算出する構成とすることで、切断方向にかかわらず制御できる。よって、本装置では必要最小限では1個の検出手段で用紙幅を検出することができ、信頼性を向上させ得る。また、オートフィード機構と組み合わせることで、ロール紙セット時に自動で用紙幅の情報が得られ、装置本体では、得られた紙幅に基づき、トレイ選択、定着温度制御等のコピー動作(ステップ7)の制御に利用でき、品質を向上させ得る。また、このカッター機構では、さらに両端にクリーニング用のブラシ33を設けることで、スライダを動作させる毎にセンサ表面の埃を掻き落し、紙紛等の誤検知に対する余裕度を向上させ得るため、信頼性に優れたものとなる。   In addition, with respect to the cutting direction from left to right, the speed is measured in the same manner from right to left and the width is calculated, so that control can be performed regardless of the cutting direction. Therefore, in the present apparatus, the sheet width can be detected by a single detecting means at the minimum necessary, and the reliability can be improved. In combination with the auto-feed mechanism, paper width information is automatically obtained when a roll paper is set, and the main body of the apparatus performs a copy operation (step 7) such as tray selection and fixing temperature control based on the obtained paper width. It can be used for control and can improve quality. Further, in this cutter mechanism, by providing cleaning brushes 33 at both ends, dust on the sensor surface is scraped off every time the slider is operated, and the margin for erroneous detection of paper dust and the like can be improved. Excellent in properties.

すなわち、従来の紙幅検知機構にあるように用紙幅毎に検知手段を並べる必要がなく、1つの検知手段を用いその検知位置を移動させることで用紙幅を把握でき、信頼性が高く、また検知位置移動手段も、装置既設の手段を用いるため、改めて機構を追加する必要がなく、効率が良い。また、用紙検知手段を非接触型とすることで、用紙搬送方向に直行する方向に用紙検知による負荷を与えず、用紙を横ズレさせてしまったり、傷を付けてしまったりすることがない。さらに、信頼性の高い光学式のセンサを用いることで、品質の安定を図れ、加えてHP部分に受光面を清掃するクリーニング機構を設けることで、随時受光面の清掃を行って用紙切断による紙紛の影響を回避できる。   In other words, it is not necessary to arrange detection means for each paper width as in the conventional paper width detection mechanism, and the detection position can be grasped by moving the detection position using one detection means, and the detection is highly reliable. Since the position moving means uses the existing means of the apparatus, it is not necessary to add a mechanism again and the efficiency is high. In addition, since the paper detection means is a non-contact type, the paper detection load is not applied in the direction perpendicular to the paper conveyance direction, and the paper is not laterally displaced or scratched. Furthermore, by using a highly reliable optical sensor, quality can be stabilized, and in addition, a cleaning mechanism for cleaning the light receiving surface is provided in the HP portion, so that the light receiving surface can be cleaned at any time and the paper is cut by paper cutting. The influence of the powder can be avoided.

本発明を適用する画像形成装置の一例である複写機等の装置本体の概略図1 is a schematic diagram of an apparatus main body such as a copying machine as an example of an image forming apparatus to which the present invention is applied 給紙トレイの模式図Schematic diagram of the paper tray 給紙トレイの主要構成の斜視図Perspective view of the main components of the paper feed tray カッター部(シャトルカッター)の説明用の断面図Sectional drawing for description of cutter part (shuttle cutter) 同じく斜視図Same perspective view サイズ(幅)検知のフロー図Flow chart of size (width) detection 用紙切断時の反射型センサの出力図Output diagram of reflective sensor when cutting paper

符号の説明Explanation of symbols

1:給紙トレイ
2:ロール紙
3:フィードローラ対
4:カッター部
5:レジストローラ
6:転写部
7:定着部
8:原稿読み取り部
9:用紙検知センサ
10:用紙検知センサ
13:駆動モータ
14:ノブ
15、16:ギヤ
17:固定刃
18:回転刃
19:フレーム
20:支軸
21:スライダブラケット
22:ガイドコロ
23:スライダフレーム
24:ワイヤ
25:ギヤプーリ
26:プーリ
27:モータ
28:スライダ
29:反射型センサ
30:ブラケット
31:端部
32:端部以外の部分
33:ブラシ
34:側板
Cr:制御部
Dc:カッター駆動回路
Dm:モータ駆動回路
Op:操作部
1: Paper feed tray 2: Roll paper 3: Feed roller pair 4: Cutter part 5: Registration roller 6: Transfer part 7: Fixing part 8: Document reading part 9: Paper detection sensor 10: Paper detection sensor 13: Drive motor 14 : Knob 15, 16: Gear 17: Fixed blade 18: Rotary blade 19: Frame 20: Support shaft 21: Slider bracket 22: Guide roller 23: Slider frame 24: Wire 25: Gear pulley 26: Pulley 27: Motor 28: Slider 29 : Reflective sensor 30: Bracket 31: End 32: Parts other than end 33: Brush 34: Side plate Cr: Control unit Dc: Cutter drive circuit Dm: Motor drive circuit Op: Operation unit

Claims (8)

給紙装置から給送するロール紙を切断する移動刃を、スライダを用いて用紙幅方向に往復摺動させるロール紙給紙装置の切断装置に用いて前記ロール紙の幅を検出するための紙幅検知装置であって、前記スライダに用紙検知手段を設け、該用紙検知手段の前記スライダ移動時の用紙検出時間を計測し、該計測時間より前記ロール紙の幅を算出することを特徴とする紙幅検知装置。 Paper width for detecting the width of the roll paper using a cutting device of the roll paper feed device that reciprocally slides the moving blade for cutting the roll paper fed from the paper feed device in the paper width direction using a slider A paper width, characterized in that a paper detection means is provided on the slider, the paper detection time when the paper detection means moves the slider is measured, and the width of the roll paper is calculated from the measurement time. Detection device. 複写機、プリンタ等に設けられたロール紙を給送する給紙装置であって、用紙を任意長さに切断する切断装置を有し、該切断装置が、固定刃と、これに当接して用紙を切断する移動刃と、該移動刃を保持して前記ロール紙の幅方向に摺動するスライダと、該スライダの駆動手段で構成されるシャトルカッター方式であり、前記スライダに用紙検知手段を設け、前記スライダ移動時の用紙検出時間を計測し、該計測時間より前記ロール紙の幅を算出することを特徴とする紙幅検知装置。 A paper feeding device that feeds roll paper provided in a copying machine, a printer, etc., and has a cutting device that cuts the paper into an arbitrary length, the cutting device being in contact with the fixed blade A shuttle cutter system comprising a moving blade that cuts paper, a slider that holds the moving blade and slides in the width direction of the roll paper, and a driving means for the slider. And a paper width detecting device that measures a paper detection time when the slider is moved and calculates the width of the roll paper from the measurement time. 請求項1または2の紙幅検知装置において、前記用紙検知手段が非接触型のセンサであることを特徴とする紙幅検知装置。 3. The paper width detecting device according to claim 1, wherein the paper detecting means is a non-contact type sensor. 請求項1から3のいずれかの紙幅検知装置において、前記スライダ上に設けられた用紙検知手段は、前記スライダの可動範囲両端部の非切断領域の位置検出を兼ねるものであることを特徴とする紙幅検知装置。 4. The paper width detecting device according to claim 1, wherein the paper detecting means provided on the slider also serves as position detection of non-cut regions at both ends of the movable range of the slider. Paper width detection device. 請求項1から4のいずれかの紙幅検知装置において、前記用紙検知手段に光学式の反射型センサを用い、かつ前記スライダの可動範囲両端部の非切断領域において該反射型センサをクリーニングする手段を有することを特徴とする紙幅検知装置。 5. The paper width detecting device according to claim 1, wherein an optical reflective sensor is used as the paper detecting means, and the reflective sensor is cleaned in non-cut regions at both ends of the movable range of the slider. A paper width detection device comprising: 請求項1から5のいずれかの紙幅検知装置を用いたことを特徴とするロール紙給紙装置。 A roll paper feeding device using the paper width detecting device according to claim 1. 請求項1から5のいずれかの紙幅検知装置を用いたことを特徴とする画像形成装置。 An image forming apparatus using the paper width detecting device according to claim 1. 請求項6のロール紙給紙装置を用いたことを特徴とする画像形成装置。
An image forming apparatus using the roll paper feeding device according to claim 6.
JP2005066506A 2005-03-10 2005-03-10 Paper width detector, roll paper feeder, and image forming device Pending JP2006248667A (en)

Priority Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013086266A (en) * 2011-10-13 2013-05-13 Sinfonia Technology Co Ltd Printer
US8657402B2 (en) 2010-12-02 2014-02-25 Ricoh Company, Ltd. Image forming apparatus including sheet cutting device
CN106881957A (en) * 2015-12-14 2017-06-23 精工爱普生株式会社 Foreign matter minimizing technology in printing equipment, printing equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8657402B2 (en) 2010-12-02 2014-02-25 Ricoh Company, Ltd. Image forming apparatus including sheet cutting device
JP2013086266A (en) * 2011-10-13 2013-05-13 Sinfonia Technology Co Ltd Printer
CN106881957A (en) * 2015-12-14 2017-06-23 精工爱普生株式会社 Foreign matter minimizing technology in printing equipment, printing equipment
CN106881957B (en) * 2015-12-14 2020-07-28 精工爱普生株式会社 Printing apparatus and foreign matter removing method in printing apparatus

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