JP2003146481A - Paper feeder - Google Patents
Paper feederInfo
- Publication number
- JP2003146481A JP2003146481A JP2001338914A JP2001338914A JP2003146481A JP 2003146481 A JP2003146481 A JP 2003146481A JP 2001338914 A JP2001338914 A JP 2001338914A JP 2001338914 A JP2001338914 A JP 2001338914A JP 2003146481 A JP2003146481 A JP 2003146481A
- Authority
- JP
- Japan
- Prior art keywords
- double feed
- feeding device
- sheet
- detecting
- sheets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Controlling Sheets Or Webs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複写機、プリン
タ、ファクシミリ、イメージスキャナ等の画像読取装置
に用いる給紙装置に関し、特に搬送しようとする原稿等
の用紙が２枚またはそれ以上送られたときの重送を検知
する重送検知機能を備えた給紙装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet feeding device used in an image reading apparatus such as a copying machine, a printer, a facsimile, an image scanner, etc., and particularly, two or more sheets of a document or the like to be conveyed are fed. The present invention relates to a sheet feeding device having a double feed detection function for detecting double feed at the time.
【０００２】[0002]
【従来の技術】イメージスキャナ等の画像読取装置に
は、給紙トレイ上にセットした原稿を送り出すための給
紙装置を備える。この種の給紙装置は、積載されている
原稿を上から１枚ずつ繰り出すというもので、重なり合
った原稿同士の摩擦によって２枚以上が送り出される重
送の防止機構を備えたものがほとんどである。このよう
な重送防止機構を持つ給紙装置としては、分離ローラと
トルクリミッタを内蔵したリバースローラの組み合わせ
としたものが広く利用されている。2. Description of the Related Art An image reading apparatus such as an image scanner is provided with a paper feeding device for feeding a document set on a paper feeding tray. This kind of paper feeding device is to feed out stacked documents one by one from the top, and most of them are provided with a double feed preventing mechanism in which two or more documents are fed out due to friction between overlapping documents. . As a sheet feeding device having such a double feed preventing mechanism, a combination of a separating roller and a reverse roller having a torque limiter is widely used.
【０００３】一方、用紙の重送が発生したときには、画
像読取部を２枚の原稿が重なり合ったまま通過するの
で、原稿に記載された画像の読み取り不良や原稿の搬送
経路における紙詰まりを招く。このため、給紙トレイか
ら画像読取部までの間で原稿の重送を検知することが必
要であり、その検知方法として従来では光学センサや超
音波センサが利用されている。On the other hand, when multiple sheets are fed, the two originals pass through the image reading section while being overlapped with each other, resulting in poor reading of the images described on the originals and paper jams in the original conveying path. Therefore, it is necessary to detect the double feeding of the document from the paper feed tray to the image reading section, and conventionally, an optical sensor or an ultrasonic sensor is used as the detection method.
【０００４】このような原稿の重送状態を検知するため
の手段としては、例えば透過型フォトセンサーを用いて
紙が１枚の場合と複数枚の場合とで透過する光量が異な
ることを検知する方式や、超音波センサを用い、原稿の
搬送路を挟んで光センサや超音波の発信器と受信器とを
配置し、１枚の原稿の通過の際の受信側への超音波の減
衰度を基準としてこれより大きな減衰度となったときに
重送と判定する方式が多く用いられるようになってきて
いる。そして、このような光学センサや超音波センサの
導入によって、画像読取部へ入る前の原稿が１枚か重送
状態かを容易に判定でき、原稿画像の読み取り不良や欠
落が効果的に防止され得るようになってきた。As a means for detecting the double feeding state of such an original, for example, a transmissive photosensor is used to detect that the amount of transmitted light is different between one sheet and a plurality of sheets. Method or ultrasonic sensor, an optical sensor or ultrasonic transmitter and receiver are placed across the original transport path, and the attenuation of ultrasonic waves to the receiving side when one original passes Based on the standard, a method of determining a double feed when the degree of attenuation is larger than this has been widely used. By introducing such an optical sensor or ultrasonic sensor, it is possible to easily determine whether the original document before entering the image reading unit is in the single-feed state or in the multi-feed state, and it is possible to effectively prevent reading failure or omission of the original image. I'm starting to get it.
【０００５】原稿の重送状態を検知するための手段とし
ては、例えば、透過型フォトセンサーを用いて、紙が１
枚の場合と、複数枚の場合とで透過される光の量が異な
ることを検知する方式が用いられる。また、特開平５−
４３０９１号公報に開示されている装置のように、紙厚
検知装置と紙サイズ検知装置との２種類のセンサから得
られる紙厚とサイズの情報とを制御装置に入力し、重送
の検知を行うようにしているものもある。さらに例え
ば、特開２０００-２５９８６号公報に開示されている
装置のように、超音波センサを用いるものもある。この
超音波センサを用いるタイプでは、原稿の搬送路を挟ん
で超音波の発信器と受信器とを配置し、１枚の原稿の通
過の際の受信側への超音波の減衰度を基準としてこれよ
り大きな減衰度となったときに重送と判定する方式とし
たものである。As a means for detecting the double feeding state of the original, for example, a transmissive photosensor is used, and the paper
A method of detecting that the amount of transmitted light is different between the case of one sheet and the case of a plurality of sheets is used. In addition, JP-A-5-
Like the device disclosed in Japanese Patent No. 43091, the paper thickness and size information obtained from two types of sensors, a paper thickness detection device and a paper size detection device, are input to the control device to detect double feed. Some are doing it. Further, for example, there is a device using an ultrasonic sensor like the device disclosed in Japanese Patent Laid-Open No. 2000-25986. In the type using this ultrasonic sensor, an ultrasonic wave transmitter and an ultrasonic wave receiver are arranged with a document conveyance path sandwiched between them, and the attenuation of the ultrasonic wave to the receiving side when one document is passed is used as a reference. This is a system in which it is determined as a double feed when the degree of attenuation is larger than this.
【０００６】[0006]
【発明が解決しようとする課題】このような光学センサ
や超音波センサの導入によって、画像読取り部へ入る前
の原稿が１枚か重送状態かを判定でき、原稿の画像の読
み取り不良や欠落が防止され得るが、従来は原稿の搬送
経路を挟んで配置されるセンサが機器内に固定されてい
るので、重送検出にはその検出センサに対応する箇所
に、原稿の特定範囲内に印刷がされていない、こと等の
制約条件がある。With the introduction of such an optical sensor or ultrasonic sensor, it is possible to determine whether the original document before entering the image reading section is in the single-feed state or in the double-feed state. However, since the sensors that are conventionally placed across the document transport path are fixed inside the device, printing is performed within the specified range of the document at the location corresponding to the detection sensor for double feed detection. There are constraints such as not being done.
【０００７】すなわち、通常は原稿の先端１０ｍｍ程度
の範囲には印刷部分はないことがほとんどであるが、原
稿の先端部の重送検出範囲と相対する位置に印刷や汚れ
等がある場合、透過光量が変化するために、実際には重
送していないにもかかわらず重送と検知されてしまうこ
とが生じる。That is, in most cases, there is usually no printed portion within the range of the leading edge of the original document of about 10 mm. Due to the change in the amount of light, it may be detected as a double feed even though the double feed is not actually performed.
【０００８】例えば図７に示すように、コピー品質の劣
化によって重送検知範囲Ｓ内に帯状の縦筋（汚れ）Ｘが
ある原稿が原稿群の中に１枚（複数枚でも同じ）あると
すると、帯状の縦筋（汚れ）Ｘがない原稿に比較して帯
状の縦筋Ｘがある原稿では、その帯状の縦筋（汚れ）Ｘ
により透過光量が減少することにより、重送した場合と
同等の透過光量の減少となり、重送と誤検知される。For example, as shown in FIG. 7, it is assumed that there is one original (or the same for a plurality of originals) in the original group that has a strip-shaped vertical stripe (dirt) X in the double feed detection range S due to the deterioration of copy quality. Then, in the case of an original having a strip-shaped vertical stripe X, as compared to an original having no strip-shaped vertical stripe (dirt) X, the strip-shaped vertical stripe (dirt) X
As a result, the amount of transmitted light is reduced, so that the amount of transmitted light is reduced to the same extent as in the case of double feeding, and false detection of double feeding is performed.
【０００９】本発明は、上記従来の問題点にかんがみて
なしたもので、帯状の縦筋（汚れ）や印刷がある原稿が
原稿群の中に入っていて、重送検知範囲に相対する位置
にその帯状の縦筋（汚れ）や印刷がある場合でも、その
帯状の縦筋（汚れ）や印刷を避けて重送検知が行えるよ
うに、重送検出範囲（位置）を汚れや印刷を避けた任意
に設定でき、誤検知のない重送検知を行える給紙装置を
提供することを目的とする。The present invention has been made in view of the above-mentioned problems of the related art, and a document having a band-shaped vertical stripe (dirt) or a print is contained in a document group, and the position is opposite to the double feed detection range. Even if there are vertical stripes (dirt) or printing on the sheet, avoid double feed detection range (position) on the double feed detection area (position) so that double feed detection can be performed by avoiding the vertical stripes (dirt) or printing. It is another object of the present invention to provide a sheet feeding device that can be arbitrarily set and can detect double feeding without erroneous detection.
【００１０】[0010]
【課題を解決するための手段】本発明の給紙装置のうち
請求項１に係るものは、上記目的を達成するために、複
数枚の原稿や転写紙等の用紙を積載可能な用紙積載手
段、該用紙積載手段に積載した用紙を給紙する給紙手
段、給紙しようとする用紙を他の用紙から分離する分離
手段、上記用紙の２枚以上の重送を検知する重送検知手
段を備える給紙装置において、上記重送検知手段を上記
用紙の主走査方向に移動可能に保持する保持手段を有す
ることを特徴とする。According to a first aspect of the present invention, there is provided a sheet stacking device capable of stacking a plurality of sheets of originals or transfer sheets in order to achieve the above object. A sheet feeding means for feeding the sheets stacked on the sheet stacking means, a separating means for separating the sheet to be fed from other sheets, and a double feed detecting means for detecting the double feed of two or more sheets The sheet feeding device is provided with holding means for holding the multi-feed detection means so as to be movable in the main scanning direction of the paper.
【００１１】同請求項２に係るものは、上記目的を達成
するために、請求項１の給紙装置において、上記重送検
知手段が、検出位置を可変するレバーを外部に突出させ
て有することを特徴とする。According to a second aspect of the present invention, in order to achieve the above object, in the sheet feeding device according to the first aspect, the double feed detecting means has a lever for changing a detection position, which is protruded to the outside. Is characterized by.
【００１２】同請求項３に係るものは、上記目的を達成
するために、請求項２の給紙装置において、上記レバー
の先端部が上記重送検知手段の検出範囲に対応する幅を
有するとともに上記用紙積載手段に積載される用紙の先
端位置上部に位置することを特徴とする。According to a third aspect of the present invention, in order to achieve the above object, in the sheet feeding device of the second aspect, the tip of the lever has a width corresponding to the detection range of the double feed detecting means. It is characterized in that it is located above the leading edge position of the sheets stacked on the sheet stacking means.
【００１３】同請求項４に係るものは、上記目的を達成
するために、請求項１ないし３のいずれかの給紙装置に
おいて、上記重送検知手段が、上記用紙の搬送経路を挟
んで位置する一対のセンサからなり、用紙搬送時に物理
量の変化を検出するものであり、上記保持手段が、上記
一対のセンサをそれぞれ主走査方向に移動可能に固定保
持する一対の移動体と、該移動体を連動させて駆動する
駆動手段を有することを特徴とする。According to a fourth aspect of the present invention, in order to achieve the above object, in the sheet feeding device according to any one of the first to third aspects, the double feed detecting means is located at a position sandwiching the sheet conveying path. And a pair of moving bodies for fixedly holding the pair of sensors so as to be movable in the main scanning direction, and the moving body. It is characterized in that it has a driving means for interlocking with.
【００１４】同請求項５に係るものは、上記目的を達成
するために、請求項４の給紙装置において、上記駆動手
段が、上記移動体を駆動するモータ、上記移動体に設け
られた位置検出用のフィラー、該フィラーの位置を検出
する位置検出センサを備え、上記モータを制御する制御
部が、外部から入力される重送検出位置情報を記録する
記録部を有し、用紙毎の重送検出位置を外部入力により
任意に設定可能としてなることを特徴とする。According to a fifth aspect of the present invention, in order to achieve the above object, in the sheet feeding device according to the fourth aspect, the drive means is a motor for driving the movable body, and a position provided on the movable body. The control unit for controlling the motor includes a filler for detection, a position detection sensor for detecting the position of the filler, and a recording unit for recording the multi-feed detection position information input from the outside. It is characterized in that the sending detection position can be arbitrarily set by an external input.
【００１５】同請求項６に係るものは、上記目的を達成
するために、請求項２ないし５のいずれかの給紙装置に
おいて、上記レバーの近傍に、重送検知位置の表示部を
配してなることを特徴とする。According to a sixth aspect of the present invention, in order to achieve the above object, in the sheet feeding device according to any of the second to fifth aspects, a display section for a double feed detection position is arranged near the lever. It is characterized by
【００１６】[0016]
【発明の実施の形態】以下本発明の実施の形態を図面を
参照して説明する。なお以下の実施形態は原稿画像の読
取装置に本発明の給紙装置を原稿給紙装置として適用し
たものについてのみ説明しているが、本発明はこれに限
定されず、種々の画像形成装置における原稿や転写紙等
の用紙の給紙装置として採用可能である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Note that the following embodiments describe only a document image reading apparatus in which the sheet feeding device of the present invention is applied as a document sheet feeding device, but the present invention is not limited to this, and is applicable to various image forming apparatuses. It can be used as a paper feed device for paper such as originals and transfer paper.
【００１７】図１は本発明に係る給紙装置の実施対象と
なる画像読取装置の一例を示す概念的断面図である。図
中１は給紙トレイ、２は原稿、３はピックアップロー
ラ、４は分離ローラ、５はリバースローラ、６ａは重送
検知部の透過センサの発光側、６ｂは同じく受光側、７
は搬送ローラ、８はＡＤＦ原稿ガラス、９は排紙ロー
ラ、１０は排紙トレイである。また１１は光源、１２は
反射板、１３は第１ミラー、１４は第１キャリッジベー
ス、１５は第２ミラー、１６は第３ミラー、１７は第２
キャリッジベース、１８はレンズ、１９はＣＣＤ、２０
は画像読取板である。また２９は、後述するセンサ移動
用のレバーである。FIG. 1 is a conceptual cross-sectional view showing an example of an image reading apparatus which is an implementation target of the paper feeding apparatus according to the present invention. In the figure, 1 is a paper feed tray, 2 is a document, 3 is a pickup roller, 4 is a separation roller, 5 is a reverse roller, 6a is a light emitting side of a transmissive sensor of the double feed detection unit, 6b is also a light receiving side, 7
Is a conveyance roller, 8 is an ADF original glass, 9 is a paper ejection roller, and 10 is a paper ejection tray. Further, 11 is a light source, 12 is a reflector, 13 is a first mirror, 14 is a first carriage base, 15 is a second mirror, 16 is a third mirror, and 17 is a second mirror.
Carriage base, 18 is lens, 19 is CCD, 20
Is an image reading plate. Reference numeral 29 is a lever for moving a sensor described later.
【００１８】この画像読取装置の動作を簡単に説明す
る。まず、給紙トレイ１に積載された原稿群のうちの最
上位の原稿２が、ピックアップローラ３により上部の他
の原稿から分離して分離部に送られる。分離部は、原稿
２を送る方向へ回転する分離ローラ４と、原稿２を給紙
トレイ１へ戻す方向に回転するリバースローラ５で構成
され、複数毎の原稿２・・が送られてきた場合に最上位
の１枚だけを搬送ローラ７に送るようになっている。リ
バースローラ５には、トルクリミッタが内蔵されてお
り、原稿２が１枚の場合は後述するようにリバースロー
ラ５も原稿を送る向きに回転する。The operation of this image reading apparatus will be briefly described. First, the uppermost original 2 of the originals stacked on the paper feed tray 1 is separated from the other originals on the upper side by the pickup roller 3 and sent to the separating unit. The separation unit is composed of a separation roller 4 that rotates in the direction in which the original 2 is fed and a reverse roller 5 that rotates in the direction in which the original 2 is returned to the paper feed tray 1. When a plurality of originals 2 ... Further, only the uppermost one sheet is sent to the transport roller 7. The reverse roller 5 has a built-in torque limiter. When the number of originals 2 is one, the reverse roller 5 also rotates in the direction in which the originals are fed, as will be described later.
【００１９】分離部から送り出された原稿２は、重送検
知部の透過センサの発光側６ａ、受光側６ｂにて透過光
が検出され、さらに搬送ローラ７によりＡＤＦ原稿ガラ
ス８に送られる。重送検知部においては、重送により原
稿が重なって送られてくる場合は、センサから出力され
る透過光量が減少するので、重送と検知し、その時点で
原稿２の搬送を中断してオペレータに原稿の重送を警告
する。The original 2 sent out from the separating section is detected by the light emitting side 6a and the light receiving side 6b of the transmissive sensor of the double feed detecting section, and is further sent to the ADF original glass 8 by the conveying roller 7. In the double-feed detection unit, when the originals are overlapped and fed by the double-feed, the amount of transmitted light output from the sensor decreases, so that the double-feed is detected, and the conveyance of the original 2 is interrupted at that time. Alert the operator to double feeds.
【００２０】ＡＤＦ原稿ガラス８に送られた原稿は、ラ
ンプ１１及び反射板１２にて照射され、その反射光は、
第１キャリッジベース１４に保持固定された第１ミラー
１３、第２キャリッジベース１７に保持固定された第２
ミラー１５及び第３ミラー１６を介して、レンズ１８に
より画像読取板２０上のＣＣＤＩ９に導かれ、原稿上の
情報が読み取られる。読み取り後の原稿２は、排紙ロー
ラ９に送られ、排紙トレイ１０上に排出される。The original sent to the ADF original glass 8 is illuminated by the lamp 11 and the reflector 12, and the reflected light is
The first mirror 13 held and fixed on the first carriage base 14, and the second mirror 13 held and fixed on the second carriage base 17.
Through the mirror 15 and the third mirror 16, the lens 18 guides the information to the CCD I 9 on the image reading plate 20, and the information on the original is read. The read document 2 is sent to the paper discharge roller 9 and discharged onto the paper discharge tray 10.
【００２１】図２ないし図４は本発明に係る給紙装置の
一実施形態の要部を示す。これらの図に示すように、前
側板２１、後側板２２の間には、発光センサ６ａが搭載
された移動体２５と受光センサ６ｂが搭載された移動体
２６が、それぞれ軸２３、２４に原稿２の主走査方向で
移動可能に保持されている。2 to 4 show the essential parts of an embodiment of the sheet feeding device according to the present invention. As shown in these figures, between the front side plate 21 and the rear side plate 22, a moving body 25 having a light emitting sensor 6a and a moving body 26 having a light receiving sensor 6b are mounted on shafts 23 and 24 respectively. It is held so as to be movable in two main scanning directions.
【００２２】移動体２５、２６は、複数配置されたプー
リ２７間に掛け回されたワイヤ２８にそれぞれ固定され
ており、両移動体２５、２６は連動して同方向に移動可
能な構成となっている。The moving bodies 25 and 26 are fixed to the wires 28 wound around a plurality of pulleys 27, respectively, so that the moving bodies 25 and 26 can move in the same direction in conjunction with each other. ing.
【００２３】図３に示すように、移動体２５にはレバー
２９が固定され、オペレータがそのレバー２９の手動操
作により、重送検出位置を任意に設定できるようになっ
ている。また図４に示すように、レバー２９の先端部は
給紙トレイ１上に積載された原稿２の先端位置の上部に
位置するようになっており、オペレータが重送検出位置
を任意に設定する際、原稿２のどの位置を重送検出位置
としているかをひと目で確認できるようになっている。
レバー２９の先端部の幅は、重送検出に必要な幅（図７
でいえば重送検出範囲Ｓの幅）と一致させてある。なお
図中３０は給紙部の上カバー、３１は前カバー、３２は
後カバーであり、レバー２９の先端側は上カバー３０よ
りも給紙トレイ１側へ突出させて設けてある。As shown in FIG. 3, a lever 29 is fixed to the movable body 25, and an operator can manually set the double feed detection position by manually operating the lever 29. Further, as shown in FIG. 4, the tip of the lever 29 is located above the tip of the document 2 stacked on the paper feed tray 1, and the operator arbitrarily sets the double feed detection position. At this time, it is possible to check at a glance which position of the document 2 is the double feed detection position.
The width of the tip of the lever 29 is the width required for double feed detection (see FIG. 7).
That is, the width is equal to the width of the double feed detection range S). In the figure, reference numeral 30 is an upper cover of the sheet feeding portion, 31 is a front cover, and 32 is a rear cover, and the tip end side of the lever 29 is provided so as to project from the upper cover 30 toward the sheet feeding tray 1 side.
【００２４】図５及び図６にオペレータの手動操作によ
らない重送検出位置を行う本発明の他の実施形態を示
す。基本構成は、先の実施形態と同様であるが、移動体
２５、２６を駆動するモータ３４、駆動プーリ３３、移
動体２５の位置を検出するために移動体２５に設けたフ
ィラー３５、フィラー３５を検出するセンサ３６、及び
図示せぬ制御部を有し、原稿画像の読取開始前にオペレ
ータが重送検出位置をこれも図示せぬ操作部から設定可
能になっている。原稿の１枚毎の重送検出位置の設定も
可能である。なお図中３８、３９は、給紙トレイ１上に
積載される原稿２の幅方向に合わせて移動し、原稿２の
幅を規制するフェンスである。FIG. 5 and FIG. 6 show another embodiment of the present invention in which the double feed detection position is set without manual operation by the operator. The basic configuration is the same as that of the previous embodiment, but the motor 34 that drives the moving bodies 25 and 26, the drive pulley 33, the filler 35 provided on the moving body 25 to detect the position of the moving body 25, and the filler 35. It has a sensor 36 for detecting the above, and a control unit (not shown), and the operator can set the double feed detection position also from the operation unit (not shown) before starting the reading of the document image. It is also possible to set the double feed detection position for each document. In the figure, 38 and 39 are fences that move in accordance with the width direction of the document 2 stacked on the paper feed tray 1 and regulate the width of the document 2.
【００２５】この実施形態では、図６に示すように、上
カバー３０上に重送検出位置を例えば１８分割し、数字
で示したデカル３７を表示部として設けておけば、オペ
レータの操作部からの重送検出位置設定時には、その数
字を入力するだけで位置制御できる。In this embodiment, as shown in FIG. 6, if the multi-feed detection position is divided into, for example, 18 on the upper cover 30 and a decal 37 indicated by a number is provided as a display section, the operator's operation section can be operated. When setting the double feed detection position, the position can be controlled simply by inputting the number.
【００２６】例えば、原稿２の１枚目〜５枚目までは
“９”、６枚目〜１０枚目までの原稿２は“３”、それ
以降の原稿２に対しては“１２”の位置で重送検知を行
いたい場合の操作部からの表示及びその表示に対するオ
ペレータの入力手順を以下に示す。
設定は複数箇所？→“３”を入力
１箇所目は、何枚目〜何枚目→“１＃５”を入力
重送検出位置は？→“９”を入力
２箇所目は、何枚目〜何枚目→“６＃１０”を入力
重送検出位置は？→“３”を入力
３箇所目は、何枚目〜何枚目→“１１＃”を入力
重送検出位置は？→“１２”を入力For example, the first to fifth originals 2 are "9", the sixth to 10th originals 2 are "3", and the subsequent originals 2 are "12". The following is a description of the display from the operation unit and the operator's input procedure for that display when it is desired to detect double feed at a position. Is there multiple settings? → Input "3", 1st place, from what number to how many → Enter "1 # 5" What is the double feed detection position? → Input "9", from the second sheet, the number of sheets to the number of sheets → Enter "6 # 10" What is the double feed detection position? → Input “3”, 3rd to 3rd sheet → Enter “11 #” What is the double feed detection position? → Enter “12”
【００２７】そして、上記入力情報を元に、モータ３４
が駆動制御され、移動体２５、２６（発光センサ６ａ及
び受光センサ６ｂ）が設定位置に移動し、原稿ごとに設
定された位置にて原稿の重送検知を行う。Then, based on the above input information, the motor 34
Is controlled to move, and the moving bodies 25 and 26 (the light emitting sensor 6a and the light receiving sensor 6b) move to the set position, and the double feed detection of the document is performed at the position set for each document.
【００２８】なお本実施形態では、重送検知位置を１８
分割した数字を用いたが、１８分割に限らずもっと細か
なあるいは粗い分割としてもよい。In this embodiment, the double feed detection position is set to 18
Although the divided numbers are used, the number is not limited to 18 and may be finer or coarser.
【００２９】[0029]
【発明の効果】請求項１の給紙装置は、以上説明してき
たように、用紙の２枚以上の重送を検知する重送検知手
段を用紙の主走査方向に移動可能に保持してなるので、
原稿等の先端部の汚れや印刷のない部分に合わせて重送
検知手段の位置を任意に合わせることができ、したがっ
て、汚れや印刷のない部分において重送を検知でき、原
稿等に対して“先端中央部の１０ｍｍ×１０ｍｍの位置
に印刷があってはならない”等の制約条件を設けなくて
も良く、誤検知しないように対応できるという効果があ
る。As described above, the paper feeding device according to the first aspect of the present invention holds the double feed detecting means for detecting the double feed of two or more sheets so as to be movable in the main scanning direction. So
The position of the double-feed detection means can be arbitrarily adjusted according to the dirt or unprinted portion of the original or the like, and therefore, the double-feed can be detected in the dirt or unprinted portion and It is not necessary to set a constraint condition such as "printing should not be made at a position of 10 mm × 10 mm at the center of the tip", and it is possible to take an action to prevent erroneous detection.
【００３０】請求項２の給紙装置は、以上説明してきた
ように、重送検知手段には、カバー外部に突出したレバ
ーを備えるので、上記共通の効果に加え、オペレータが
任意に検出位置を選択できるという効果がある。As described above, in the sheet feeding device according to the second aspect of the invention, since the double feed detecting means is provided with the lever protruding to the outside of the cover, in addition to the above common effects, the operator can arbitrarily set the detection position. The effect is that you can choose.
【００３１】請求項３の給紙装置は、以上説明してきた
ように、レバーの先端部が重送検知手段の検出範囲に対
応する幅を有するとともに用紙積載手段に積載される用
紙の先端位置上部に位置するので、上記共通の効果に加
え、オペレータによる重送検知位置の位置合わせ時に、
オペレータが原稿等の先端の印刷のない部分にそのレバ
ーを目視にて合わせることができるので、簡単な構成で
操作性が良いという効果がある。As described above, in the paper feeding device of the third aspect, the tip of the lever has a width corresponding to the detection range of the double feed detecting means, and the top of the tip of the paper stacked on the paper stacking means is located above. In addition to the above common effects, when the operator positions the double feed detection position,
Since the operator can visually adjust the lever to the unprinted portion of the document or the like, there is an effect that the operability is good with a simple configuration.
【００３２】請求項４の給紙装置は、以上説明してきた
ように、重送検知手段が、用紙の搬送経路を挟んで位置
する一対のセンサからなり、用紙搬送時に物理量の変化
を検出するものであり、保持手段が一対のセンサをそれ
ぞれ主走査方向に移動可能に固定保持する一対の移動体
と、この移動体を連動させて駆動する駆動手段を有する
ので、上記共通の効果に加え、より経済的に有利な構成
で、一対のセンサを連動させて移動可能にできるという
効果がある。As described above, in the sheet feeding device according to the present invention, the double feed detecting means is composed of a pair of sensors positioned across the sheet conveying path, and detects a change in the physical quantity when the sheet is conveyed. Since the holding means has a pair of moving bodies that fixedly holds the pair of sensors so as to be movable in the main scanning direction, and a driving means that drives the moving bodies in conjunction with each other, in addition to the common effects described above, The structure is economically advantageous, and there is an effect that a pair of sensors can be interlocked to be movable.
【００３３】請求項５の給紙装置は、以上説明してきた
ように、移動体の駆動手段が、移動体を駆動するモー
タ、移動体に設けられた位置検出用のフィラー、フィラ
ーの位置を検出する位置検出センサを備え、モータを制
御する制御部が、外部から入力される重送検出位置情報
を記録する記録部を有し、用紙毎の重送検出位置を外部
入力により任意に設定可能としてなるので、上記共通の
効果に加え、原稿の１枚毎に重送検出範囲、位置を設定
でき、原稿等の先端部に汚れや印刷あり、さらにその汚
れや印刷が原稿毎に位置が異なっていても、誤検知しな
いで重送検知できるという効果がある。As described above, in the paper feeding device according to the fifth aspect, the driving means for the moving body detects the motor for driving the moving body, the position detecting filler provided on the moving body, and the position of the filler. The control unit that controls the motor has a recording unit that records the information about the double-feeding detection position that is input from the outside, and allows you to set the multiple-feeding detection position for each sheet by external input. Therefore, in addition to the common effects described above, the double feed detection range and position can be set for each document, and the leading edge of the document or the like has stains or prints. However, there is an effect that double feeding can be detected without erroneous detection.
【００３４】請求項６の給紙装置は、以上説明してきた
ように、レバーの近傍に重送検知位置の表示部を配して
なるので、上記共通の効果に加え、表示された数字に合
わせて重送検知位置を選択でき、オペレータにとってよ
り扱いやすく、操作性が向上するという効果がある。As described above, in the paper feeding device of the sixth aspect, since the display portion for the double feed detection position is arranged in the vicinity of the lever, in addition to the above common effect, it is possible to adjust the number displayed. The double feed detection position can be selected by the operator, and it is easier for the operator to handle and the operability is improved.
【図１】本発明に係る給紙装置の実施対象となる画像読
取装置の一例を示す概念的断面図である。FIG. 1 is a conceptual cross-sectional view showing an example of an image reading apparatus which is an implementation target of a paper feeding apparatus according to the present invention.
【図２】本発明に係る給紙装置の一実施形態の要部を示
す正面図である。FIG. 2 is a front view showing a main part of an embodiment of a paper feeding device according to the present invention.
【図３】図２の実施形態の移動体に固定したレバーを示
す斜視図である。FIG. 3 is a perspective view showing a lever fixed to a moving body of the embodiment of FIG.
【図４】同レバーとカバーを示す斜視図である。FIG. 4 is a perspective view showing the lever and a cover.
【図５】本発明の他の実施形態の要部を示す正面図であ
る。FIG. 5 is a front view showing a main part of another embodiment of the present invention.
【図６】図５の実施形態において上カバーに設けた重送
検知表示を示す平面図である。FIG. 6 is a plan view showing a double feed detection display provided on the upper cover in the embodiment of FIG.
【図７】コピー品質の劣化によって重送検知範囲内に帯
状の縦筋（汚れ）がある原稿を示す平面図である。FIG. 7 is a plan view showing a document having strip-shaped vertical stripes (dirt) within the double-feed detection range due to deterioration of copy quality.
１ 給紙トレイ ２ 原稿 ３ ピックアップローラ ４ 分離ローラ ５ リバースローラ ６ａ 重送検知部の透過センサの発光側 ６ｂ 同受光側 ７ 搬送ローラ ８ ＡＤＦ原稿ガラス ９ 排紙ローラ １０ 排紙トレイ １１ 光源 １２ 反射板 １３ 第１ミラー １４ 第１キャリッジベース １５ 第２ミラー １６ 第３ミラー １７ 第２キャリッジベース １８ レンズ １９ ＣＣＤ ２０ 画像読取板 ２１ 前側板 ２２ 後側板 ２３、２４ 軸 ２５、２６ 移動体 ２７ プーリ ２８ ワイヤ ２９ センサ移動用のレバー ３０ 給紙部の上カバー ３１ 前カバー ３２ 後カバー ３３ 駆動プーリ ３４ モータ ３５ フィラー ３６ センサ ３７ デカル ３８、３９ フェンス Ｓ 重送検知範囲 Ｘ 原稿の帯状の縦筋（汚れ） 1 Paper tray 2 manuscripts 3 pickup roller 4 Separation roller 5 Reverse roller 6a Light emission side of transmission sensor of double feed detection section 6b Same light receiving side 7 Conveyor rollers 8 ADF original glass 9 Paper ejection roller 10 Output tray 11 light source 12 Reflector 13 First mirror 14 1st carriage base 15 Second mirror 16 Third mirror 17 Second carriage base 18 lenses 19 CCD 20 Image reading board 21 front plate 22 Rear plate 23, 24 axis 25,26 mobile 27 pulley 28 wires 29 Lever for moving sensor 30 Paper cover top cover 31 front cover 32 Rear cover 33 Drive pulley 34 motor 35 Filler 36 sensors 37 decals 38, 39 fence S double feed detection range X Vertical stripes on the original (dirt)
Claims (6)
畔用紙積載手段、該用紙積載手段に積載した用紙を給紙
する給紙手段、給紙しようとする用紙を他の用紙から分
離する分離手段、上記用紙の２枚以上の重送を検知する
重送検知手段を備える給紙装置において、上記重送検知
手段を上記用紙の主走査方向に移動可能に保持する保持
手段を有することを特徴とする給紙装置。1. A flexible sheet stacking unit for stacking a plurality of sheets of originals or transfer sheets, a sheet feeding unit for feeding the sheets stacked on the sheet stacking unit, and a sheet to be fed from other sheets. In a sheet feeding device provided with a separating means for separating and a double feed detecting means for detecting the double feed of two or more sheets, a holding means for holding the double feed detecting means so as to be movable in the main scanning direction of the sheets. A paper feeding device characterized by the above.
検知手段が、検出位置を可変するレバーを外部に突出さ
せて有することを特徴とする給紙装置。2. The paper feeding device according to claim 1, wherein the double-feed detection means has a lever for varying a detection position, which is protruded to the outside.
ーの先端部が上記重送検知手段の検出範囲に対応する幅
を有するとともに上記用紙積載手段に積載される用紙の
先端位置上部に位置することを特徴とする給紙装置。3. The sheet feeding device according to claim 2, wherein the tip end portion of the lever has a width corresponding to the detection range of the double feed detection means and is located above the tip end position of the sheets stacked on the sheet stacking means. A paper feeding device characterized by:
において、上記重送検知手段が、上記用紙の搬送経路を
挟んで位置する一対のセンサからなり、用紙搬送時に物
理量の変化を検出するものであり、上記保持手段が、上
記一対のセンサをそれぞれ主走査方向に移動可能に固定
保持する一対の移動体と、該移動体を連動させて駆動す
る駆動手段を有することを特徴とする給紙装置。4. The sheet feeding device according to claim 1, wherein the double feed detecting unit includes a pair of sensors positioned across the sheet conveyance path, and detects a change in physical quantity during sheet conveyance. The holding means has a pair of moving bodies that fixedly holds the pair of sensors so as to be movable in the main scanning direction, and a driving means that drives the moving bodies in an interlocking manner. Paper feeder.
手段が、上記移動体を駆動するモータ、上記移動体に設
けられた位置検出用のフィラー、該フィラーの位置を検
出する位置検出センサを備え、上記モータを制御する制
御部が、外部から入力される重送検出位置情報を記録す
る記録部を有し、用紙毎の重送検出位置を外部入力によ
り任意に設定可能としてなることを特徴とする給紙装
置。5. The paper feeding device according to claim 4, wherein the driving means drives the moving body, a motor for driving the moving body, a position detecting filler provided on the moving body, and a position detecting sensor for detecting the position of the filler. The control unit for controlling the motor has a recording unit for recording the double feed detection position information input from the outside, and the double feed detection position for each sheet can be arbitrarily set by external input. Characteristic paper feeding device.
において、上記レバーの近傍に、重送検知位置の表示部
を配してなることを特徴とする給紙装置。6. The paper feeding device according to claim 2, further comprising a display unit for displaying a double feed detection position in the vicinity of the lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001338914A JP3930292B2 (en) | 2001-11-05 | 2001-11-05 | Paper feeding device, image reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001338914A JP3930292B2 (en) | 2001-11-05 | 2001-11-05 | Paper feeding device, image reading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003146481A true JP2003146481A (en) | 2003-05-21 |
| JP3930292B2 JP3930292B2 (en) | 2007-06-13 |
Family
ID=19153336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001338914A Expired - Fee Related JP3930292B2 (en) | 2001-11-05 | 2001-11-05 | Paper feeding device, image reading device |
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| Country | Link |
|---|---|
| JP (1) | JP3930292B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8142087B2 (en) | 2007-03-30 | 2012-03-27 | Seiko Epson Corporation | Printing device with paper width detector mounted to carriage and method of controlling the printing device |
-
2001
- 2001-11-05 JP JP2001338914A patent/JP3930292B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8142087B2 (en) | 2007-03-30 | 2012-03-27 | Seiko Epson Corporation | Printing device with paper width detector mounted to carriage and method of controlling the printing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3930292B2 (en) | 2007-06-13 |
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