JP2007276886A - Automatic paper feeder - Google Patents

Automatic paper feeder Download PDF

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JP2007276886A
JP2007276886A JP2006101435A JP2006101435A JP2007276886A JP 2007276886 A JP2007276886 A JP 2007276886A JP 2006101435 A JP2006101435 A JP 2006101435A JP 2006101435 A JP2006101435 A JP 2006101435A JP 2007276886 A JP2007276886 A JP 2007276886A
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pad
separation pad
pick roller
separation
paper
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Shuichi Morikawa
修一 森川
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PFU Ltd
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PFU Ltd
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Priority to JP2006101435A priority Critical patent/JP2007276886A/en
Priority to DE102006050486A priority patent/DE102006050486B4/en
Priority to US11/588,410 priority patent/US20070228643A1/en
Publication of JP2007276886A publication Critical patent/JP2007276886A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/54—Pressing or holding devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic paper feeder certainly conveying paper from paper stacked on a stacker or the like into a device one by one in the automatic paper feeder used for a printer, a scanner or the like and automatically conveying paper to the device. <P>SOLUTION: A pad pressurization means for pressing a separation pad to a pick roller comprises a first pad pressurization member and a second pad pressurization member and has rotation fulcrum structures at two positions. The shape in which the second pad pressurization member is contacted with a back surface of the separation pad is made in a form that it has an edge on a distal end side of the separation pad and a rear end side of the separation pad traces a back surface of the partner separation pad, so that the shape of the second pad pressurization member has a rotation fulcrum at a center and is made in a form that the separation pad traces the pick roller. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は、プリンタやスキャナなどの装置に用紙を自動的に給紙する自動給紙装置に関し、重送やジャムなどが発生せず、確実に１枚ずつ用紙を給紙することを実現する自動給紙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 an automatic paper feeding device that automatically feeds paper to an apparatus such as a printer or a scanner, and automatically realizes feeding of paper one by one without occurrence of double feeding or jamming. The present invention relates to a paper feeding device.

従来の自動給紙装置においては、スタッカに積載された用紙をピックローラでピックする際に、図４に示すように、用紙５４をピックローラ５０と分離パッド５１との間に挿入し、摩擦力を利用して1枚ずつ用紙が装置内に搬送されるようにしていた。   In the conventional automatic paper feeder, when the paper loaded on the stacker is picked by the pick roller, the paper 54 is inserted between the pick roller 50 and the separation pad 51 as shown in FIG. The paper was transported into the device one by one using.

このとき、ピックローラ５０と分離パッド５１の間に十分な摩擦力が働くように、分離パッド５１をピックローラ５０に接触させるように加圧バネ５３によりピックローラ５０の表面に分離パッド５１を接触させるための押圧を加えるパッド加圧手段５２を備えるように構成している。   At this time, the separation pad 51 is brought into contact with the surface of the pick roller 50 by the pressure spring 53 so that the separation pad 51 is brought into contact with the pick roller 50 so that a sufficient frictional force acts between the pick roller 50 and the separation pad 51. It is comprised so that the pad pressurization means 52 which applies the press for making it may be provided.

しかし、このような構造では、どうしても分離パッド５１がピックローラ５０に接触する領域が狭く、分離パッド５１により複数枚重なった用紙を分離しきれず、重送が発生する場合があった。   However, in such a structure, the region where the separation pad 51 contacts the pick roller 50 is inevitably narrow, and a plurality of sheets cannot be separated by the separation pad 51, and double feeding may occur.

そこで、図５に示すように、分離パッド５１に押圧を加えるパッド加圧手段５２の形状を逆Ｕ字型とすることで、ピックローラ５０の表面に分離パッド５１を２箇所で加圧することができ、分離パッド５１とピックローラ５０の接触する領域を広くすることで、より確実に用紙を１枚ずつに分離することができるようにしているものが考案されている（例えば、特許文献１を参照）。   Therefore, as shown in FIG. 5, the pad pressing means 52 for applying pressure to the separation pad 51 is formed in an inverted U shape so that the separation pad 51 can be pressed against the surface of the pick roller 50 at two locations. It is possible to divide the paper more reliably one by one by widening the contact area between the separation pad 51 and the pick roller 50 (for example, see Patent Document 1). reference).

しかし、このような構造としても、用紙５４と分離パッド５１が接触することでパッド加圧手段５２の前後２箇所の押圧分布が一定ではなく、うまく用紙を１枚ずつに分離することができないことがあった。   However, even with such a structure, when the paper 54 and the separation pad 51 are in contact with each other, the pressure distribution at the two places before and after the pad pressurizing means 52 is not constant, and the paper cannot be separated well one by one. was there.

そのため、このような問題を解決するため、図６に示すように、パッド加圧手段５２として、第一パッド加圧部材５２ａと第二パッド加圧部材５２ｂからなり、第一回転支点５５と第二回転支点５６を備え、第二回転支点５６を第二パッド加圧部材５２ｂの中心に設け、ピックローラ５０の回転方向に対して前後に回転可能にすることで、第二パッド加圧部材５２ｂの前後２箇所の押圧分布を一定にするような装置が考案されている（例えば、特許文献２を参照）。   Therefore, in order to solve such a problem, as shown in FIG. 6, the pad pressing means 52 includes a first pad pressing member 52a and a second pad pressing member 52b. A second pad fulcrum 56 is provided, and the second pad fulcrum 56 is provided at the center of the second pad pressure member 52b so that it can be rotated back and forth with respect to the rotation direction of the pick roller 50. An apparatus has been devised that makes the pressure distribution at two locations before and after the above constant (see, for example, Patent Document 2).

しかし実際には、このような構造としても、分離パッド５１は剛性を持っているため、図のＰ１部では、分離パッド５１をピックローラ５０へ接触させるための分離パッド５１の反力としては図のＬ１の３乗に反比例するが、Ｐ２部では、Ｐ１を支点としたＬ２の３乗に反比例するため、Ｐ１＝Ｐ２の押圧力では、Ｐ２による分離パッド５１をピックローラ５０に押し当てる付圧力が非常に低減してしまい、逆にＰ１では集中荷重がかかってしまうという問題があった。   However, actually, even with such a structure, the separation pad 51 has rigidity. Therefore, in the P1 part of the figure, the reaction force of the separation pad 51 for bringing the separation pad 51 into contact with the pick roller 50 is illustrated in FIG. Is inversely proportional to the third power of L1, but in the P2 part, it is inversely proportional to the third power of L2 with P1 as a fulcrum. However, P1 has a problem that a concentrated load is applied.

特開平８−９１６０９号公報JP-A-8-91609 特願２００４−２８３９３６号公報Japanese Patent Application No. 2004-283936

前記のごとく、従来の技術では次のような問題点がある。   As described above, the conventional techniques have the following problems.

スタッカなどに積載された用紙を１枚ずつピックするため、ピックローラに分離パッドを備え、ピックローラと分離パッドによる摩擦力により用紙の分離を行っているが、ピックローラに分離パッドを押し当てるパッド加圧手段を１箇所で加圧する構成とすると、分離パッドに加える圧力の適正化が困難で、重送などの搬送ミスが発生していた。   In order to pick up the sheets stacked on the stacker one by one, the pick roller is equipped with a separation pad, and the paper is separated by the friction force between the pick roller and the separation pad, but the pad that presses the separation pad against the pick roller When the pressurizing means is configured to pressurize at one place, it is difficult to optimize the pressure applied to the separation pad, and a transport error such as double feeding has occurred.

これを解決するため、パッド加圧手段を逆Ｕ字型の形状とすることで、前後２箇所で分離パッドをピックローラに押し当てるように構成することで、重送などの搬送ミスを発生しないようにしているものがあるが、用紙の種類によって分離パッドの前後２箇所に加わる圧力が均一にならず、搬送ミスが発生する場合があった。   In order to solve this problem, the pad pressing means has an inverted U-shape so that the separation pad is pressed against the pick roller at two positions in the front and rear, so that no conveyance errors such as double feeding occur. However, depending on the type of paper, the pressure applied to the two places before and after the separation pad is not uniform, and a conveyance error may occur.

このような問題を解決するため、逆Ｕ字型としたパッド加圧手段の中心に、回転支点を設け、ピックローラの回転方向に対し前後に回転可能とし、分離パッドの前後２箇所に加わる圧力を均一にしているものがあるが、分離パッドには剛性があるため、分離パッドの前後２箇所に加わる圧力が同じでも、分離パッドのたわみの特性により、分離パッドの前後２箇所のピックローラに押し当てられる力は均一にはならないという問題があった。   In order to solve such a problem, a rotation fulcrum is provided in the center of the inverted U-shaped pad pressurizing means so that it can be rotated back and forth with respect to the rotation direction of the pick roller, and pressure applied to the front and rear of the separation pad. Although the separation pad is rigid, even if the pressure applied to the two places before and after the separation pad is the same, the pick roller at the two places before and after the separation pad may be affected by the deflection characteristics of the separation pad. There was a problem that the force to be pressed was not uniform.

この発明の課題は、プリンタやスキャナなどに使用される、用紙を自動的に装置に搬送する自動給紙装置において、スタッカなどに積載された用紙の種類などにかかわらず、積載された用紙から確実に１枚ずつ装置内に用紙を搬送する自動給紙装置を提供することにある。   SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic paper feeding device that is used in a printer, a scanner, or the like and automatically conveys paper to the device, regardless of the type of paper loaded on a stacker or the like. It is an object of the present invention to provide an automatic paper feeding device that conveys paper into the device one by one.

前記の問題点を解決するために、この発明では次に示す手段を取った。   In order to solve the above problems, the present invention takes the following means.

分離パッドをピックローラに押し当てるパッド加圧手段として、第一パッド加圧部材と第二パッド加圧部材からなり、２箇所の回転支点構造をもつとともに、第二パッド加圧部材の形状として中心に回転支点をもち、分離パッドがピックローラをなぞる形態となるように、第二パッド加圧部材が分離パッド裏面と接触する形状を、分離パッド先端側にエッジをもち、分離パッド後端側は相手の分離パッド裏面をなぞる形態とする。   As a pad pressing means for pressing the separation pad against the pick roller, it consists of a first pad pressing member and a second pad pressing member, and has a rotation fulcrum structure at two locations, and the center of the shape of the second pad pressing member The second pad pressure member has a shape in contact with the back surface of the separation pad so that the separation pad follows the pick roller. The back side of the mating separation pad is traced.

分離パッドをピックローラに押し当てるパッド加圧手段として、第一パッド加圧部材と第二パッド加圧部材からなり、２箇所の回転支点構造をもつとともに、パッド加圧手段のうち、直接分離パッドと接触する第二パッド加圧部材を逆Ｕ字型とし、その回転支点が、中心から分離パッド先端側によった形態としてもよい。   As pad pressing means for pressing the separation pad against the pick roller, the pad pressing means comprises a first pad pressing member and a second pad pressing member, and has two rotation fulcrum structures. The second pad pressurizing member in contact with the head may be formed in an inverted U shape, and the rotation fulcrum may be formed on the separation pad tip side from the center.

このとき、ピックローラの外層部に高耐久で摩擦係数の高いゴム部材を使用し、内層部に低硬度のゴム部材を使用して２層構造となるようにする。   At this time, a rubber member having a high durability and a high friction coefficient is used for the outer layer portion of the pick roller, and a low-hardness rubber member is used for the inner layer portion so as to have a two-layer structure.

この発明により、以下に示すような効果が期待できる。   According to the present invention, the following effects can be expected.

分離パッドの剛性によるたわみの特性を考慮した上で、分離パッドとピックローラ間に十分な接触領域を確保するとともに、その接触領域における押圧分布が均一となることで、どのような種類の用紙に対しても、確実に1枚ずつ分離して用紙を装置に給紙することができる自動給紙装置を提供することができるようになる。   In consideration of the characteristics of deflection due to the rigidity of the separation pad, a sufficient contact area is secured between the separation pad and the pick roller, and the pressure distribution in the contact area is uniform, so that any type of paper can be used. On the other hand, it is possible to provide an automatic paper feeder that can reliably separate sheets one by one and feed paper to the apparatus.

この発明は、次に示す実施の形態を取った。   The present invention takes the following embodiments.

スタッカなどに積載された用紙をピックローラによりピックし、これを1枚ずつに分離して装置に搬送するため、ピックローラに分離パッドを備え、この分離パッドをピックローラに押し当てるため、パッド加圧手段を設ける。このパッド加圧手段として、第一パッド加圧部材と第二パッド加圧部材からなり、２箇所の回転支点構造をもつとともに、第二パッド加圧部材の形状として中心に回転支点をもち、分離パッドがピックローラをなぞる形態となるように、第二パッド加圧部材が分離パッド裏面と接触する形状を、分離パッド先端側にエッジをもち、分離パッド後端側は相手の分離パッド裏面をなぞる形態とする   In order to pick up the paper loaded on the stacker with a pick roller, separate it one by one and transport it to the machine, the pick roller is equipped with a separation pad, and a pad is added to press the separation pad against the pick roller. Pressure means is provided. This pad pressurization means consists of a first pad pressurization member and a second pad pressurization member, and has two rotation fulcrum structures, and has a rotation fulcrum at the center as the shape of the second pad pressurization member, and is separated The shape where the second pad pressure member is in contact with the back surface of the separation pad has an edge on the front side of the separation pad, and the rear end side of the separation pad is traced on the back surface of the other separation pad so that the pad follows the pick roller. Form

これにより、分離パッドとピックローラは用紙の分離に十分な接触領域を確保でき、さらに分離パッドの剛性によるたわみの特性を考慮しても、分離パッドとピックローラとの接触部における押圧分布は均一化され、用紙の種類によらず安定して用紙を1枚ずつに分離することができるようになる。   As a result, the separation pad and the pick roller can secure a sufficient contact area for separating the paper, and the pressure distribution at the contact portion between the separation pad and the pick roller is uniform even considering the deflection characteristics due to the rigidity of the separation pad. This makes it possible to stably separate the sheets one by one regardless of the type of the sheet.

分離パッドをピックローラに押し当てるパッド加圧手段として、第一パッド加圧部材と第二パッド加圧部材からなり、２箇所の回転支点構造をもつとともに、パッド加圧手段のうち、直接分離パッドと接触する第二パッド加圧部材を逆Ｕ字型とし、その回転支点が、中心から分離パッド先端側によった形態としてもよい。   As pad pressing means for pressing the separation pad against the pick roller, the pad pressing means comprises a first pad pressing member and a second pad pressing member, and has two rotation fulcrum structures. The second pad pressurizing member in contact with the head may be formed in an inverted U shape, and the rotation fulcrum may be formed on the separation pad tip side from the center.

これによっても、分離パッドとピックローラは用紙の分離に十分な接触領域を確保でき、また、第二パッド加圧部材の回転支点が中心から分離パッド先端側によっていることから、てこの原理により、分離パッド先端側のエッジ部に集中荷重がかかり、分離パッド後端側のエッジには弱い力しかかからないことで、分離パッドの剛性によるたわみ特性を考慮すると、分離パッドとピックローラとの接触部における押圧分布は均一化され、用紙によらず安定して用紙を1枚ずつに分離することができるようになる。   Also by this, the separation pad and the pick roller can ensure a sufficient contact area for separating the paper, and the rotation fulcrum of the second pad pressing member is from the center to the separation pad tip side. A concentrated load is applied to the edge of the separation pad tip side, and only a weak force is applied to the edge of the separation pad rear end side. Therefore, in consideration of the deflection characteristics due to the rigidity of the separation pad, the contact portion between the separation pad and the pick roller The pressure distribution is made uniform, and the sheets can be stably separated one by one regardless of the sheets.

このとき、ピックローラの外層部に高耐久で摩擦係数の高いゴム部材を使用し、内層部に低硬度のゴム部材を使用して２層構造となるようにする。   At this time, a rubber member having a high durability and a high friction coefficient is used for the outer layer portion of the pick roller, and a low-hardness rubber member is used for the inner layer portion so as to have a two-layer structure.

これにより、低硬度で耐摩耗性に優れるピックローラが得られ、より安定した用紙分離処理ができるようになる。   Accordingly, a pick roller having low hardness and excellent wear resistance can be obtained, and more stable paper separation processing can be performed.

この発明による代表的な実施例を図によって説明する。なお、以下において、同じ箇所は同一の符号を付してあり、詳細な説明を省略することがある。   A typical embodiment according to the present invention will be described with reference to the drawings. In the following, the same portions are denoted by the same reference numerals, and detailed description may be omitted.

図１は本発明の実施例１を示す。   FIG. 1 shows a first embodiment of the present invention.

本発明の自動給紙装置には、スタッカに積載された用紙をピックするためのピックローラ１に、用紙を１枚ずつに分離するための分離パッド２を備えており、この分離パッド２がピックローラ１に押し当てられる方向に力を加えられることで、この間を通過する用紙に摩擦力が働き、用紙が１枚ずつに分離するようにしている。   In the automatic paper feeder of the present invention, a pick roller 1 for picking up sheets stacked on a stacker is provided with a separation pad 2 for separating the sheets one by one. By applying a force in a direction in which the roller 1 is pressed against the roller 1, a frictional force acts on the paper passing through the roller 1 so that the papers are separated one by one.

このとき、用紙が分離されやすくするためには、分離パッド２とピックローラ１が十分な接触領域を確保していることとともに、接触領域全体に均一に付圧力がかかっていることが必要となる。   At this time, in order to facilitate separation of the sheet, it is necessary that the separation pad 2 and the pick roller 1 ensure a sufficient contact area and that the entire contact area is uniformly applied with pressure. .

そこで、パッド加圧手段３として、図１に示すように、加圧バネ４により第二パッド加圧部材３ｂを分離パッド２がピックローラ１に押し付けられる方向に力を加えるように構成し、第二パッド加圧部材３ｂは、第二回転支点６を中心にピックローラ１の回転方向に対し前後に回転するようにすることで、第二パッド加圧部材３ｂの前後にかかる力を均等にするとともに、分離パッド２の剛性によるたわみの特性を考慮し、第二パッド加圧部材３ｂの分離パッド先端側にエッジをもち、分離パッド後端側は分離パッドの裏面をなぞるような面接触でパッドを抑えるような形状とする。   Therefore, as shown in FIG. 1, the pad pressing means 3 is configured such that a force is applied to the second pad pressing member 3b in the direction in which the separation pad 2 is pressed against the pick roller 1 by the pressing spring 4. The two-pad pressure member 3b is made to rotate back and forth with respect to the rotation direction of the pick roller 1 around the second rotation fulcrum 6, thereby equalizing the force applied to the front and rear of the second pad pressure member 3b. In addition, in consideration of the deflection characteristics due to the rigidity of the separation pad 2, the pad has a surface contact that has an edge at the leading end side of the separation pad of the second pad pressing member 3b and the rear end side of the separation pad traces the back surface of the separation pad. The shape should be such that

なお、非常に厚い用紙が進入してきたときには、第一パッド加圧部材３ａが第一回転支点５を中心としてパッド加圧手段３全体を回転させることで、分離パッド２には無理な力が加わらず、適正な加圧力を維持することができるようになっている。   When a very thick sheet enters, the first pad pressing member 3a rotates the entire pad pressing means 3 around the first rotation fulcrum 5, so that an unreasonable force is applied to the separation pad 2. Therefore, an appropriate pressure can be maintained.

また、図２は本発明の実施例２を示す。   FIG. 2 shows a second embodiment of the present invention.

実施例１と同様に、分離パッド２とピックローラ１が接触している領域全体に、均一に付圧がかかるように、第二パッド加圧部材３ｂの第二回転支点６を中心から分離パッド先端によった形状とすることで、Ｌ１＞Ｌ２となり、てこの原理からＰ１＜Ｐ２が成り立ち、第二パッド加圧部材３ｂの分離パッド先端側エッジに荷重が集中し、分離パッド後端側エッジにはあまり力が加わらないこととなり、分離パッド２の剛性によるたわみの特性を考慮すると、分離パッド２とピックローラ１の接触領域全体には均一な付圧がかかることとなる。   As in the first embodiment, the separation pad 2 and the pick roller 1 are in contact with each other from the center of the second rotation fulcrum 6 of the second pad pressurizing member 3b so that the entire area where the separation pad 2 and the pick roller 1 are in contact is uniformly applied. By adopting the shape according to the tip, L1> L2 is established, and P1 <P2 is established from the principle of the lever, and the load concentrates on the separation pad tip side edge of the second pad pressurizing member 3b, and the separation pad rear end side edge Therefore, a uniform pressure is applied to the entire contact area between the separation pad 2 and the pick roller 1 in consideration of the deflection characteristic due to the rigidity of the separation pad 2.

このような、分離パッドとピックローラの組み合わせからなる自動給紙装置において、より安定して用紙の分離を行うため、図３に示すように、ピックローラ１の外層部１ａを高耐久で摩擦係数の高いゴム部材を使用し、内層部１ｂに圧縮残留歪みの低い連続気泡の低硬度の発泡ゴム部材を使用した、２層構造としてもよい。   In such an automatic paper feeding apparatus comprising a combination of a separation pad and a pick roller, in order to more stably separate the paper, the outer layer portion 1a of the pick roller 1 is made highly durable and has a friction coefficient as shown in FIG. A high-rubber rubber member may be used, and an open-celled low-hardness foamed rubber member having low compression residual strain may be used for the inner layer portion 1b.

これにより、ピックローラのゴム硬度を２０度（ＪＩＳ−Ａ）以下のものを使用するようにする。   As a result, the pick roller having a rubber hardness of 20 degrees (JIS-A) or less is used.

本発明の実施例１である。It is Example 1 of this invention. 本発明の実施例２である。It is Example 2 of this invention. 二層構造としたピックローラの説明図である。It is explanatory drawing of the pick roller made into the two-layer structure. 従来の分離パッドへの加圧手段の説明図である。It is explanatory drawing of the pressurization means to the conventional separation pad. 従来の逆Ｕ字型パッド加圧手段を使用した場合の説明図である。It is explanatory drawing at the time of using the conventional reverse U-shaped pad pressurization means. 従来の逆Ｕ字型パッド加圧手段を使用した場合の説明図２である。It is explanatory drawing 2 at the time of using the conventional reverse U-shaped pad pressurization means.

符号の説明Explanation of symbols

１：ピックローラ
１ａ：外層部
１ｂ：内層部
２：分離パッド
３：パッド加圧手段
３ａ：第一パッド加圧部材
３ｂ：第二パッド加圧部材
４：加圧バネ
５：第一回転支点
６：第二回転支点

1: Pick roller 1a: Outer layer portion 1b: Inner layer portion 2: Separation pad 3: Pad pressing means 3a: First pad pressing member 3b: Second pad pressing member 4: Pressing spring 5: First rotation fulcrum 6 : Second rotation fulcrum

Claims (3)

プリンタやスキャナなどの用紙を装置に供給する自動給紙装置において、
用紙を１枚ずつ給紙されるように、ピックローラに、用紙を押し当てる分離パッドと、
当該分離パッドをピックローラ表面に押し当てるように圧力を加えるパッド加圧手段とを備え、
当該パッド加圧手段として、第一パッド加圧部材と第二パッド加圧部材からなり、２箇所の回転支点構造をもつとともに、第二パッド加圧部材の形状として中心に回転支点をもち、分離パッドがピックローラをなぞる形態となるように、第二パッド加圧部材が分離パッド裏面と接触する形状を、分離パッド先端側にエッジをもち、分離パッド後端側は相手の分離パッド裏面をなぞる形態とする、
ことを特徴とする自動給紙装置。 In an automatic paper feeder that supplies paper, such as printers and scanners,
A separation pad for pressing the paper against the pick roller so that the paper is fed one by one;
Pad pressing means for applying pressure so as to press the separation pad against the pick roller surface;
The pad pressing means consists of a first pad pressing member and a second pad pressing member, and has two rotation fulcrum structures, and has a rotation fulcrum at the center as the shape of the second pad pressing member. The shape where the second pad pressure member is in contact with the back surface of the separation pad has an edge on the front side of the separation pad, and the rear end side of the separation pad is traced on the back surface of the other separation pad so that the pad follows the pick roller. Form
An automatic paper feeder characterized by that. プリンタやスキャナなどの用紙を装置に供給する自動給紙装置において、
用紙を１枚ずつ給紙されるように、ピックローラに、用紙を押し当てる分離パッドと、
当該分離パッドをピックローラ表面に押し当てるように圧力を加えるパッド加圧手段とを備え、
当該パッド加圧手段として、第一パッド加圧部材と第二パッド加圧部材からなり、２箇所の回転支点構造をもつとともに、パッド加圧手段のうち、直接分離パッドと接触する第二パッド加圧部材を逆Ｕ字型とし、その回転支点が、中心から分離パッド先端側によった形態とする、
ことを特徴とする自動給紙装置。 In an automatic paper feeder that supplies paper, such as printers and scanners,
A separation pad for pressing the paper against the pick roller so that the paper is fed one by one;
Pad pressing means for applying pressure so as to press the separation pad against the pick roller surface;
The pad pressurizing means is composed of a first pad pressurizing member and a second pad pressurizing member, and has two rotation fulcrum structures. The pressure member is an inverted U-shape, and its rotation fulcrum is in the form of the separation pad tip side from the center.
An automatic paper feeder characterized by that. プリンタやスキャナなどの用紙を装置に供給する自動給紙装置において、
ピックローラの外層部に高耐久で摩擦係数の高いゴム部材を使用し、内層部に低硬度のゴム部材を使用して２層構造とした、
ことを特徴とする請求項１または２に記載の自動給紙装置。
In an automatic paper feeder that supplies paper, such as printers and scanners,
Using a rubber member with high durability and high coefficient of friction for the outer layer part of the pick roller, and using a rubber member with low hardness for the inner layer part, a two-layer structure was adopted.
3. The automatic paper feeder according to claim 1, wherein the automatic paper feeder is provided.
JP2006101435A 2006-04-03 2006-04-03 Automatic paper feeder Pending JP2007276886A (en)

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010269864A (en) * 2009-05-19 2010-12-02 Sumitomo Rubber Ind Ltd Paper sheet double-feed preventive member

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58176828A (en) * 1982-04-08 1983-10-17 株式会社東芝 Breaking device
JPS61142738A (en) * 1984-12-17 1986-06-30 Toshiba Corp Method for implanting ions in single crystal substrate
JPS63258335A (en) * 1987-04-14 1988-10-25 Matsushita Graphic Commun Syst Inc Automatic sheet feed device
JPH0524675A (en) * 1991-07-16 1993-02-02 Bando Chem Ind Ltd Paper feeding roller

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1996277A (en) * 1934-02-15 1935-04-02 Cross Paper Feeder Co Sheet separating combing wheel
US3986712A (en) * 1975-01-02 1976-10-19 Kaiichi Hasegawa Feeding device for card counting machines
US4674737A (en) * 1983-09-14 1987-06-23 Ricoh Company, Ltd. Automatic sheet feeding device
KR900013763A (en) * 1989-02-28 1990-09-05 안시환 Document Feeder for Copying Machine
JP2943415B2 (en) * 1991-03-19 1999-08-30 キヤノン株式会社 Paper feeder and image forming apparatus using the same
JP2538147B2 (en) * 1991-09-30 1996-09-25 松下電送株式会社 Automatic paper feeder
JPH05286594A (en) * 1992-04-13 1993-11-02 Musashi Eng Co Ltd Sheet delivery device for sheet counter
JP3448097B2 (en) * 1994-05-19 2003-09-16 ブラザー工業株式会社 Paper feeder
JP3341482B2 (en) * 1994-09-21 2002-11-05 村田機械株式会社 Paper separation device
JP3272885B2 (en) * 1994-10-11 2002-04-08 理想科学工業株式会社 Rotary stencil printing press equipped with stiffening crease applying means
US6010126A (en) * 1998-04-23 2000-01-04 Dbtel Incorporated Sheet-by-sheet paper feeding structure
JPH11310341A (en) * 1998-04-28 1999-11-09 Oki Data Corp Paper feeder and paper feeding method of printer
JP3492223B2 (en) * 1998-12-24 2004-02-03 キヤノン株式会社 Sheet separation device, image reading device, and image forming device
US6485014B1 (en) * 1999-03-17 2002-11-26 Avision Inc. Automatic paper feeding mechanism
JP2003072970A (en) * 2001-09-03 2003-03-12 Matsushita Electric Ind Co Ltd Device for separating and feeding paper
US6550761B1 (en) * 2001-11-06 2003-04-22 Umax Data Systems Inc. Integrated paper presser and stopper for automatic paper feeder
JP3736528B2 (en) * 2002-12-27 2006-01-18 ブラザー工業株式会社 Paper feeding device and image forming apparatus
JP3986473B2 (en) * 2003-07-01 2007-10-03 シャープ株式会社 Sheet material feeding apparatus, image reading apparatus, and image forming apparatus
JP2006096503A (en) * 2004-09-29 2006-04-13 Pfu Ltd Automatic paper feeding device
JP4375195B2 (en) * 2004-10-14 2009-12-02 ブラザー工業株式会社 Paper feeding device, separation unit, and image forming apparatus
JP4478590B2 (en) * 2005-02-03 2010-06-09 キヤノン株式会社 Sheet feeding apparatus, image reading apparatus, and image forming apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58176828A (en) * 1982-04-08 1983-10-17 株式会社東芝 Breaking device
JPS61142738A (en) * 1984-12-17 1986-06-30 Toshiba Corp Method for implanting ions in single crystal substrate
JPS63258335A (en) * 1987-04-14 1988-10-25 Matsushita Graphic Commun Syst Inc Automatic sheet feed device
JPH0524675A (en) * 1991-07-16 1993-02-02 Bando Chem Ind Ltd Paper feeding roller

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