JPH0543070A - Duplicate-feeding prevention device - Google Patents
Duplicate-feeding prevention deviceInfo
- Publication number
- JPH0543070A JPH0543070A JP3204383A JP20438391A JPH0543070A JP H0543070 A JPH0543070 A JP H0543070A JP 3204383 A JP3204383 A JP 3204383A JP 20438391 A JP20438391 A JP 20438391A JP H0543070 A JPH0543070 A JP H0543070A
- Authority
- JP
- Japan
- Prior art keywords
- pad
- sheet
- color
- double
- transporting
- 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.)
- Pending
Links
Landscapes
- Controlling Sheets Or Webs (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Facsimiles In General (AREA)
- Handling Of Cut Paper (AREA)
- Paper Feeding For Electrophotography (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、画像形成装置の重送防
止装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double feed prevention device for an image forming apparatus.
【0002】[0002]
【従来の技術】従来、図6に示すように、複写機、ファ
ックス等の用紙を給紙・搬送するための搬送手段である
給紙ローラ1には、用紙の重送を防止するための板状の
パッド2が給紙ローラ1に当接可能に配置されている。
そのパッド2は押え板21の一端にビス22によって取
り付けられ、その押え板21の端部は軸23によって本
体の支持部に支持されている。2. Description of the Related Art Conventionally, as shown in FIG. 6, a paper feed roller 1 which is a conveyance means for feeding and conveying paper such as a copying machine and a fax has a plate for preventing double feeding of paper. The pad 2 is arranged so as to be able to contact the paper feed roller 1.
The pad 2 is attached to one end of a holding plate 21 by a screw 22, and the end portion of the holding plate 21 is supported by a support portion of the main body by a shaft 23.
【0003】用紙が給紙されると、給紙ローラ1とパッ
ド2の間に入り込んで搬送される。2枚の用紙が同時に
給紙された場合は、パッド2側の用紙はパッド2と用紙
の摩擦力で搬送されず、給紙ローラ1側の用紙のみ搬送
される。When a sheet is fed, it enters between the sheet feed roller 1 and the pad 2 and is conveyed. When two sheets are fed at the same time, the sheet on the pad 2 side is not conveyed by the frictional force between the pad 2 and the sheet, and only the sheet on the sheet feed roller 1 side is conveyed.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、使用し
ているうちにパッド2が摩擦によってすり減ってきて寿
命がくると、無給紙や紙詰まり等の不都合が発生する。
そのためパッド2のすり減り具合いを確認する必要があ
るが、従来のパッド2では、その状態が分かりにくく、
又その都度確認する必要があるので面倒であるという課
題がある。However, if the pad 2 wears down due to friction during its use and reaches the end of its life, problems such as no paper feed and paper jam will occur.
Therefore, it is necessary to check the wear condition of the pad 2, but with the conventional pad 2, the state is difficult to understand,
In addition, there is a problem that it is troublesome because it is necessary to check each time.
【0005】本発明は、従来のパッドのこのような課題
を考慮し、パッドのすり減り具合いが分かりやすく、そ
の確認が簡単に行える重送防止装置を提供することを目
的とするものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the conventional pad, and an object of the present invention is to provide a double feed preventing device in which the wear condition of the pad can be easily understood and its confirmation can be easily performed.
【0006】[0006]
【課題を解決するための手段】請求項1の本発明は、用
紙を搬送するための搬送手段と、用紙の重送を防止する
ために、搬送手段に当接可能に配置され、2色の部材層
によって形成されているパッドとを備えた重送防止装置
である。SUMMARY OF THE INVENTION According to the present invention of claim 1, a conveying means for conveying a sheet and a two-color conveying means are arranged so as to be able to contact the conveying means in order to prevent double feeding of the sheet. And a pad formed of a member layer.
【0007】請求項4の本発明は、用紙を搬送するため
の搬送手段と、用紙の重送を防止するために、搬送手段
に当接可能に配置され、搬送手段の色又は濃度と違う色
又は濃度のパッドと、そのパッドの、搬送手段とは反対
側に配置され、パッドが摩耗して、光が透過できる状態
になった場合に、搬送手段の色又は濃度を検出できる光
検出手段とを備えた重送防止装置である。According to a fourth aspect of the present invention, a conveying means for conveying a sheet and a color different from the color or the density of the conveying means are arranged so as to be in contact with the conveying means to prevent double feeding of the sheets. Or, a density pad and a light detecting means which is arranged on the opposite side of the pad from the transportation means and which can detect the color or the density of the transportation means when the pad is worn and becomes ready to transmit light. Is a double feed prevention device.
【0008】請求項8の本発明は、用紙を搬送するため
の搬送手段と、用紙の重送を防止するために、搬送手段
に当接可能に配置され、搬送手段の色又は濃度と違う色
又は濃度のパッドとを備え、それら搬送手段及びパッド
を収納しているケースカバーの所定の位置に、パッドが
摩耗して、光が透過できる状態になった場合に、搬送手
段をケースカバーの外部から認識するための窓部を有す
る重送防止装置である。According to the present invention of claim 8, there is provided a conveying means for conveying the paper and a color different from the color or the density of the conveying means, which is arranged so as to come into contact with the conveying means in order to prevent the double feeding of the paper. Alternatively, when the pad is worn and the light can pass through it at a predetermined position of the case cover that contains the transfer means and the pad, the transfer means is provided outside the case cover. It is a double-feeding prevention device having a window portion for recognizing from.
【0009】[0009]
【作用】請求項1記載の本発明は、搬送手段が用紙を搬
送し、2色の部材層によって形成されているパッドが、
搬送手段に当接可能に配置され用紙の重送を防止する。
そして、搬送手段側の部材層がすり減ってくると他の部
材層の色に変わるので摩耗が分かりやすい。According to the present invention of claim 1, the conveying means conveys the sheet, and the pad formed by the two-color member layers,
It is arranged so that it can be brought into contact with the conveying means and prevents double feeding of sheets.
Then, when the member layer on the conveying means side is worn out, the color of the other member layers changes, so that the wear is easy to understand.
【0010】請求項4記載の本発明は、搬送手段が用紙
を搬送し、搬送手段の色又は濃度と違う色又は濃度のパ
ッドが、搬送手段に当接可能に配置され用紙の重送を防
止し、パッドの、搬送手段とは反対側に配置された光検
出手段が、パッドが摩耗して、光が透過できる状態にな
った場合に、搬送手段の色又は濃度を検出する。According to a fourth aspect of the present invention, the conveying means conveys the sheet, and a pad having a color or a density different from the color or the density of the conveying means is arranged so as to come into contact with the conveying means to prevent the double feeding of the sheets. Then, when the pad wears and becomes ready to transmit light, the light detecting means arranged on the side of the pad opposite to the conveying means detects the color or density of the conveying means.
【0011】請求項8記載の本発明は、搬送手段が用紙
を搬送し、搬送手段の色又は濃度と違う色又は濃度のパ
ッドが、搬送手段に当接可能に配置され用紙の重送を防
止し、搬送手段及びパッドを収納しているケースカバー
の窓部から、パッドが摩耗して、光が透過できる状態に
なった場合に、搬送手段を認識できる。According to an eighth aspect of the present invention, the conveying means conveys the sheet, and a pad having a color or a density different from the color or the density of the conveying means is arranged so as to come into contact with the conveying means to prevent the double feeding of the sheets. However, when the pad is worn and is in a state where light can be transmitted through the window portion of the case cover accommodating the conveying means and the pad, the conveying means can be recognized.
【0012】[0012]
【実施例】以下、本発明の実施例について図面を参照し
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【0013】図1は、本発明にかかる一実施例の重送防
止装置を備えた画像形成装置の断面図である。すなわ
ち、画像形成装置の本体10の上部には、ケースカバー
5が上下に開閉できるように、その端部で連結されてい
る。そのケースカバー5には、用紙の重送を防止するた
めの(例えば白色のシリコンゴムで形成された)パッド
2と、そのパッド2の一端が取り付けられている押さえ
板21等が設けられ、その押さえ板21はケースカバー
5の支持部材に軸23によって、連結されている。支持
部材にはバネ24が設けられ、そのバネ24はパッド2
を本体10側に設けられた、例えばグレー色のノーソレ
ックスを材料としたゴム等で形成された、給紙ローラ1
に押圧している。バネ24の横側には、パッド2の濃度
及びパッド2が摩耗して光が透過できる状態になった場
合に、給紙ローラ1の濃度を検出するための光検出手段
である反射型光センサー3が設けられている。FIG. 1 is a sectional view of an image forming apparatus equipped with a double feed prevention device according to an embodiment of the present invention. That is, the case cover 5 is connected to the upper part of the main body 10 of the image forming apparatus at its end portion so as to be opened and closed vertically. The case cover 5 is provided with a pad 2 (for example, formed of white silicone rubber) for preventing double feeding of paper, a pressing plate 21 to which one end of the pad 2 is attached, and the like. The pressing plate 21 is connected to the supporting member of the case cover 5 by a shaft 23. The support member is provided with a spring 24, and the spring 24 is used for the pad 2
The paper feed roller 1 provided on the main body 10 side and formed of rubber or the like made of, for example, gray-colored Nosolex
Is pressed against. On the side of the spring 24, a reflection type optical sensor which is a light detecting means for detecting the density of the pad 2 and the density of the paper feed roller 1 when the pad 2 is worn and is in a state where light can pass therethrough. 3 is provided.
【0014】給紙ローラ1が設けられている画像形成装
置の本体10側には、その給紙ローラ1によって送られ
てきた原稿用紙を載せるための原稿載置板17、その原
稿載置板17上の原稿用紙に光を当てるための光源1
5、その光源15に照射されて原稿用紙から反射してき
た光を、撮像するためのレンズ14に導く3個のミラー
16、レンズ14によって撮像された光画像を電気信号
に変換するCCD13、その光画像を再現するための感
熱式のロール紙11、及びその変換された電気信号によ
ってロール紙11に画像を形成させるためのサーマルヘ
ッド12等が設けられている。On the main body 10 side of the image forming apparatus provided with the paper feed roller 1, a document placing plate 17 for placing the document sheet sent by the paper feeding roller 1, and the document placing plate 17 Light source 1 for illuminating the upper manuscript paper
5, three mirrors 16 for guiding the light, which is emitted from the light source 15 and reflected from the document sheet, to a lens 14 for capturing an image; a CCD 13 for converting an optical image captured by the lens 14 into an electric signal; A heat-sensitive roll paper 11 for reproducing an image, a thermal head 12 for forming an image on the roll paper 11 by the converted electric signal, and the like are provided.
【0015】また、図2(a)に示すように、パッド2
の押さえ板21側には、パッド2と同じ大きさの(例え
ばウレタンゴムでできた)透明部材層4が重ねられて設
けられ、その押さえ板21の一部には、反射型光センサ
ー3によってパッド2の濃度及びパッド2が摩耗して光
が透過できる状態になった場合に、給紙ローラ1の濃度
を検出できるように、開口部25が開けられている。Further, as shown in FIG.
A transparent member layer 4 of the same size as the pad 2 (made of urethane rubber, for example) is provided on the side of the pressing plate 21 of, and a part of the pressing plate 21 is covered by the reflective optical sensor 3. The opening 25 is formed so that the density of the pad 2 and the density of the paper feed roller 1 can be detected when the pad 2 is worn and is in a state where light can pass therethrough.
【0016】次に上記実施例の動作について説明する。Next, the operation of the above embodiment will be described.
【0017】図2(a)に示すように、パッド2が押さ
え板21によって押さえつけられる。給紙ローラ1とパ
ッド2の間に挟まれた原稿用紙は、給紙ローラ1と原稿
用紙との摩擦力がパッド2と原稿用紙との摩擦力より大
きいので、給紙ローラ1によって原稿載置板17側に送
られる。As shown in FIG. 2A, the pad 2 is pressed by the pressing plate 21. The original paper sandwiched between the paper feed roller 1 and the pad 2 is placed by the paper feed roller 1 because the frictional force between the paper feed roller 1 and the original paper is larger than the frictional force between the pad 2 and the original paper. It is sent to the board 17 side.
【0018】いま、パッド2は使用回数が少なく殆ど摩
耗していないとすると、反射型光センサー3の発光部か
ら投射された光は、押さえ板21の開口部25を通っ
て、透明部材層4を透過してパッド2に到達する。パッ
ド2は白色であるのでその反射率が高く、パッド2に到
達した光の多くが反射され、透明部材層4を再度透過し
て、更に押さえ板21の開口部25を通って、反射型セ
ンサー3の受光部で検出される。このように、パッド2
が透明部材層4及び給紙ローラ1の間に存在している間
は、常に反射型センサー3によって明るい反射光が検出
される。Now, assuming that the pad 2 has been used less frequently and is hardly worn, the light projected from the light emitting portion of the reflective photosensor 3 passes through the opening 25 of the pressing plate 21 and passes through the transparent member layer 4. To reach the pad 2. Since the pad 2 is white, its reflectance is high, and most of the light that reaches the pad 2 is reflected, passes through the transparent member layer 4 again, and further passes through the opening 25 of the pressing plate 21 to reach the reflective sensor. It is detected by the light receiving unit of No. 3. In this way, pad 2
While the light is present between the transparent member layer 4 and the paper feed roller 1, the reflective sensor 3 always detects bright reflected light.
【0019】次に、図2(b)に示すように、パッド2
が摩耗によって透明部材層4の表面まですり減った場合
には、給紙ローラ1は透明部材層4に当接する。従って
反射型光センサー3の発光部から投射された光は、押さ
え板21の開口部25を通って、透明部材層4を透過し
て給紙ローラ1に到達する。給紙ローラ1はグレー色で
あるので、その反射率がパッド2の反射率より低く、反
射する光はパッド2の場合よりも少なくなる。そして、
そのパッド2の場合よりも弱い反射光は透明部材層4を
透過して押さえ板21の開口部25を通って、反射型光
センサー3の受光部によって検出される。Next, as shown in FIG. 2B, the pad 2
When the paper is worn down to the surface of the transparent member layer 4 due to abrasion, the paper feed roller 1 contacts the transparent member layer 4. Therefore, the light projected from the light emitting portion of the reflective optical sensor 3 passes through the opening 25 of the pressing plate 21, passes through the transparent member layer 4, and reaches the paper feed roller 1. Since the paper feed roller 1 has a gray color, its reflectance is lower than that of the pad 2, and the reflected light is less than that of the pad 2. And
The reflected light, which is weaker than in the case of the pad 2, passes through the transparent member layer 4, passes through the opening 25 of the pressing plate 21, and is detected by the light receiving portion of the reflective photosensor 3.
【0020】このように、パッド2の濃度と給紙ローラ
1の濃度を異ならせることによって、常時、摩耗して寿
命になった状態のパッド2を検出することができる。As described above, by making the density of the pad 2 and the density of the paper feed roller 1 different, it is possible to detect the pad 2 that is always worn and has reached the end of its life.
【0021】なお、上記実施例では、透明部材層4の裏
面に押さえ板21を設けていたが、それを設けず図3に
示すような、透明部材層4がその押さえ板の機能を持た
せたものであってもよい。Although the pressing plate 21 is provided on the back surface of the transparent member layer 4 in the above-described embodiment, the pressing member 21 is not provided but the transparent member layer 4 has the function of the pressing plate as shown in FIG. It may be
【0022】また、上記実施例の反射型光センサー3の
検出した検出値を利用して、その寿命になった状態の警
告をLED、LCDで表示したり、印刷出力したり、音
響を出力したりするアラーム手段を設けてもよい。Further, by utilizing the detection value detected by the reflection type optical sensor 3 of the above-mentioned embodiment, a warning of the end of its life is displayed on the LED or LCD, printed out, or output sound. Alarm means may be provided.
【0023】また、上記実施例の反射型光センサー3の
検出した検出値を利用して、パッド2の寿命がつきた場
合に、給紙動作を停止させるようにしてもよい。Further, by using the detection value detected by the reflection type optical sensor 3 of the above embodiment, the paper feeding operation may be stopped when the life of the pad 2 is reached.
【0024】また、上記実施例では、パッド2の裏面に
透明部材層4を設けたが、透明部材層4は無くてもよ
く、この場合はパッド2が摩耗して給紙ローラ1との当
接位置で2つに割れるのを防止するため、給紙ローラ1
の幅より広いパッド2を使用し、中央部にスリットがあ
くまでに止め、2つに割れないようにすることができ
る。Further, in the above embodiment, the transparent member layer 4 is provided on the back surface of the pad 2, but the transparent member layer 4 may be omitted. In this case, the pad 2 is worn and contacts the paper feed roller 1. To prevent the paper feed roller 1 from breaking at the contact position,
It is possible to use a pad 2 that is wider than the width of the above, and to stop the slit at the central portion so as not to break it in two.
【0025】また、上記実施例では、パッド2を白色、
給紙ローラ1をグレー色としたが、これに限らず、光検
出手段が検出したときにその変化が認識できればどんな
色の組合せでもよく、又、光検出手段に色の変化を検出
できるカラーセンサーを利用してもよい。In the above embodiment, the pad 2 is white,
Although the paper feed roller 1 is gray in color, it is not limited to this, and any combination of colors may be used as long as the change can be recognized when detected by the light detection means, and a color sensor capable of detecting the color change in the light detection means. May be used.
【0026】また、上記実施例の透明部材層4は、透明
色としたが、光検出手段がパッド2の濃度と給紙ローラ
1の濃度の違いを検出できれば、半透明でもよい。Further, although the transparent member layer 4 in the above-mentioned embodiment has a transparent color, it may be semi-transparent if the light detecting means can detect the difference between the density of the pad 2 and the density of the paper feed roller 1.
【0027】また、図4に示すように、光検出手段の代
わりに、ケースカバー5に、透明な部材でできた窓部6
を設けて、ケースカバー5を閉めた状態で、常にその窓
部6からパッド2の摩耗状態を認識できるようにしても
よい。Further, as shown in FIG. 4, instead of the light detecting means, the case cover 5 has a window 6 made of a transparent member.
May be provided so that the wear state of the pad 2 can always be recognized from the window 6 in the state where the case cover 5 is closed.
【0028】また、図5に示すように、光検出手段を設
けずに、パッド2を例えば青色層Bと黄色層Yの2色の
部材層によって形成し、パッド2の摩耗状態はケースカ
バー5を上に開けることによって認識できるようにし
て、パッド2の青色層Bが摩耗した場合に、黄色層Yが
表面に出てきて、その色の違いによって摩耗状態が簡単
に識別できるようにしてもよい。この場合更に2層の部
材を同様の摩擦係数のもので形成して、1層目のパッド
が寿命になってもしばらくは続けて使用できるようにし
てもよい。Further, as shown in FIG. 5, the pad 2 is formed of, for example, a two-color member layer of a blue layer B and a yellow layer Y without providing light detecting means, and the pad 2 is worn in a case cover 5 state. When the blue layer B of the pad 2 is worn out, the yellow layer Y appears on the surface so that the wear state can be easily identified by the color difference. Good. In this case, the two-layer member may be formed with the same friction coefficient so that the pad of the first layer can be continuously used for a while even when it reaches the end of its life.
【0029】[0029]
【発明の効果】以上述べたところから明らかなように本
発明は、パッドのすり減り具合いが分かりやすく、その
確認が簡単に行えるという長所を有する。As is apparent from the above description, the present invention has the advantage that the wear condition of the pad is easy to understand and can be easily confirmed.
【図1】本発明にかかる一実施例の重送防止装置を備え
た画像形成装置の断面図である。FIG. 1 is a cross-sectional view of an image forming apparatus including a double feed prevention device according to an exemplary embodiment of the present invention.
【図2】同図(a)は同実施例の側面図、同図(b)は
同実施例のパッドが摩耗した場合の側面図である。FIG. 2 (a) is a side view of the same embodiment, and FIG. 2 (b) is a side view when the pad of the same embodiment is worn.
【図3】別の実施例の側面図である。FIG. 3 is a side view of another embodiment.
【図4】請求項9の本発明にかかる一実施例の重送防止
装置の側面図である。FIG. 4 is a side view of a double feed prevention device of an embodiment according to the present invention of claim 9;
【図5】請求項1の本発明にかかる一実施例の重送防止
装置の側面図である。FIG. 5 is a side view of the double feed prevention device according to the first embodiment of the present invention.
【図6】従来の重送防止装置の側面図である。FIG. 6 is a side view of a conventional double feed prevention device.
1 給紙ローラ 2 パッド 3 反射型光センサー 4 透明部材層 5 ケースカバー 6 窓部 10 本体 21 押え板 23 回動軸 24 バネ 1 Paper Feed Roller 2 Pad 3 Reflective Optical Sensor 4 Transparent Member Layer 5 Case Cover 6 Window 10 Main Body 21 Holding Plate 23 Rotating Shaft 24 Spring
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 B65H 7/02 7456−3F G03G 15/00 109 7369−2H H04N 1/00 108 J 4226−5C (72)発明者 宮崎 資久 大阪府大阪市中央区玉造一丁目2番28号 三田工業株式会社内 (72)発明者 田中 宏幸 大阪府大阪市中央区玉造一丁目2番28号 三田工業株式会社内 (72)発明者 稲田 潤一 大阪府大阪市中央区玉造一丁目2番28号 三田工業株式会社内 (72)発明者 篠原 昌裕 大阪府大阪市中央区玉造一丁目2番28号 三田工業株式会社内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI Technical display location B65H 7/02 7456-3F G03G 15/00 109 7369-2H H04N 1/00 108 J 4226-5C ( 72) Inventor Shizuhisa Miyazaki 1-22 Tamatsukuri, Chuo-ku, Osaka-shi, Mita Kogyo Co., Ltd. (72) Inventor Junichi Inada, 1-2-2 Tamatsukuri, Chuo-ku, Osaka-shi, Mita Industry Co., Ltd. (72) Inventor Masahiro Shinohara 1-2-28, Tamatsukuri, Chuo-ku, Osaka, Osaka
Claims (9)
用紙の重送を防止するために、前記搬送手段に当接可能
に配置され、2色の部材層によって形成されているパッ
ドとを備えたことを特徴とする重送防止装置。1. A transport means for transporting a sheet, and a pad, which is arranged so as to be able to contact the transport means and is formed of a member layer of two colors, in order to prevent double feeding of the sheet. A double feed prevention device characterized by being provided.
が透明であることを特徴とする請求項1記載の重送防止
装置。2. The double-feed preventing device according to claim 1, wherein one of the two layers of the pad is transparent.
係数を有するものであることを特徴とする請求項1記載
の重送防止装置。3. The double feed prevention device according to claim 1, wherein the two layers of the pad have the same friction coefficient.
用紙の重送を防止するために、前記搬送手段に当接可能
に配置され、前記搬送手段の色又は濃度と違う色又は濃
度のパッドと、そのパッドの、前記搬送手段とは反対側
に配置され、前記パッドが摩耗して、光が透過できる状
態になった場合に、前記搬送手段の色又は濃度を検出で
きる光検出手段とを備えたことを特徴とする重送防止装
置。4. A transporting unit for transporting a sheet, and a sheet having a color or a density different from the color or the density of the transporting unit, which is arranged so as to come into contact with the transporting unit so as to prevent the double feeding of the sheet. A pad, and a light detection unit that is arranged on the opposite side of the pad from the conveying unit, and is capable of detecting the color or the density of the conveying unit when the pad is worn and becomes ready to transmit light. A double-feeding prevention device comprising:
部材層を有していることを特徴とする請求項4記載の重
送防止装置。5. The multi-feed preventing device according to claim 4, wherein the pad has a transparent member layer on the light detecting means side.
濃度を検出した場合に、警告信号を出力するためのアラ
ーム手段を備えたことを特徴とする請求項4記載の重送
防止装置。6. The double feed prevention apparatus according to claim 4, further comprising alarm means for outputting a warning signal when the light detecting means detects the color or the density of the conveying means.
濃度を検出した場合に、その結果に基づいて用紙の搬送
を停止させるための停止手段を備えたことを特徴とする
請求項4記載の重送防止装置。7. The stopping means for stopping the transportation of the sheet based on the result when the light detecting means detects the color or the density of the transporting means. Double feed prevention device.
用紙の重送を防止するために、前記搬送手段に当接可能
に配置され、前記搬送手段の色又は濃度と違う色又は濃
度のパッドとを備え、それら搬送手段及びパッドを収納
しているケースカバーの所定の位置に、前記パッドが摩
耗して、光が透過できる状態になった場合に、前記搬送
手段を前記ケースカバーの外部から認識するための窓部
を有することを特徴とする重送防止装置。8. A transporting means for transporting a sheet, and a sheet of a color or a density different from that of the transporting means, which is arranged so as to come into contact with the transporting means in order to prevent double feeding of the sheet. When the pad is worn and is in a state of being able to transmit light at a predetermined position of a case cover that contains the transfer means and the pad, the transfer means is provided outside the case cover. A double-feeding prevention device having a window for recognizing from the inside.
を有していることを特徴とする請求項8記載の重送防止
装置。9. The multi-feed preventing device according to claim 8, wherein the pad has a transparent member layer on the window side.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3204383A JPH0543070A (en) | 1991-08-14 | 1991-08-14 | Duplicate-feeding prevention device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3204383A JPH0543070A (en) | 1991-08-14 | 1991-08-14 | Duplicate-feeding prevention device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0543070A true JPH0543070A (en) | 1993-02-23 |
Family
ID=16489626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3204383A Pending JPH0543070A (en) | 1991-08-14 | 1991-08-14 | Duplicate-feeding prevention device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0543070A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2650243A2 (en) | 2012-04-12 | 2013-10-16 | Sumitomo Rubber Industries, Ltd. | Sheet separation pad and image forming apparatus |
-
1991
- 1991-08-14 JP JP3204383A patent/JPH0543070A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2650243A2 (en) | 2012-04-12 | 2013-10-16 | Sumitomo Rubber Industries, Ltd. | Sheet separation pad and image forming apparatus |
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