JPH01172141A - Automatic sheet supply device - Google Patents
Automatic sheet supply deviceInfo
- Publication number
- JPH01172141A JPH01172141A JP62332101A JP33210187A JPH01172141A JP H01172141 A JPH01172141 A JP H01172141A JP 62332101 A JP62332101 A JP 62332101A JP 33210187 A JP33210187 A JP 33210187A JP H01172141 A JPH01172141 A JP H01172141A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- feed roller
- paper feed
- sheet
- copies
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
- Paper Feeding For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は複写機やファクシミリ装置などに適用される自
動給紙装置に関する。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an automatic paper feeder applied to copying machines, facsimile machines, and the like.
従来、ファクシミリ装置における原稿の自動給紙装置と
して、第3図、第4図に示すように、原稿を載せるため
の原稿ガイド1と、外周面が原稿ガイド1よりわずかに
突出するように配置された給紙ローラ2と、原稿を給紙
ローラ2に押付けるための押圧ばね3と、原稿の重送を
防止するための分離片4と、給紙ローラ2の上流側にお
いて原稿ガイド1に取付けられ給紙ローラ2の外周面に
接するように配置された低摩擦のフィルム或いはシート
からなる導入部材5等を何するものが知られている。Conventionally, as shown in FIGS. 3 and 4, an automatic document feeder for a facsimile machine includes a document guide 1 for placing a document, and a document guide 1 arranged so that its outer peripheral surface slightly protrudes beyond the document guide 1. a pressing spring 3 for pressing the document against the paper feed roller 2; a separation piece 4 for preventing double feeding of documents; and a paper feed roller 2 attached to the document guide 1 on the upstream side of the paper feed roller 2. It is known that the introducing member 5 made of a low-friction film or sheet is disposed so as to be in contact with the outer peripheral surface of the paper feed roller 2.
この自動給紙装置による給紙動作は次のように行われる
。まず、送信者が原稿ガイド1上に沿って複数枚の原稿
6を矢印爪方向に挿入して所定位置にセットする。この
時、原稿、aは摩擦力が小さい導入部材5上を滑動して
、給紙ローラ2と押圧ばね3の間に挿入される。この状
態で、給紙ローラ2が矢印B方向に回転し、押圧ばね3
で給紙ローラ2外周面に押付けられている原稿6を、摩
擦力によって引き出し、分離片4が給紙ローラ2と協動
して複数枚の原稿6の給送を防止する。かくして、原稿
6の最下層の1枚のみが分離され、給送される。この自
動給紙装置において、導入部材5が無い場合には、挿入
原稿6の先端が第4囚の0点に突き当たり、このままで
は適正な給紙が行われない。Paper feeding operation by this automatic paper feeding device is performed as follows. First, a sender inserts a plurality of documents 6 along the document guide 1 in the direction of the arrow claw and sets them at a predetermined position. At this time, the document a slides on the introduction member 5 having a small frictional force and is inserted between the paper feed roller 2 and the pressure spring 3. In this state, the paper feed roller 2 rotates in the direction of arrow B, and the pressure spring 3
The document 6 pressed against the outer peripheral surface of the paper feed roller 2 is pulled out by the frictional force, and the separation piece 4 cooperates with the paper feed roller 2 to prevent the feeding of a plurality of documents 6. In this way, only the bottom sheet of the original 6 is separated and fed. In this automatic paper feeder, if the introduction member 5 is not provided, the leading edge of the inserted original 6 will hit the zero point of the fourth prisoner, and proper paper feeding will not be performed in this state.
従って、導入部材5は、挿入原稿6の下面が確実に給紙
ローラ2に当接する地点まで導入される様に設けられた
ものである。Therefore, the introducing member 5 is provided so that the inserted document 6 is introduced to the point where the lower surface of the inserted document 6 reliably comes into contact with the paper feed roller 2 .
発明が解決しようとする問題点
しかし、かかる構成によれば、比較的少数の原稿の給紙
は確実に行われる反面、第5図に示すように、多数枚の
原稿6を挿入した場合には、原稿6先端が押圧ばね3に
つかえて十分に挿入されず、導入部材5の存在によって
原稿6が給紙ローラ2に当接せず、給紙を行うことがで
きないという新たな問題が生じることがあった。Problems to be Solved by the Invention However, with this configuration, although a relatively small number of originals can be fed reliably, when a large number of originals 6 are inserted, as shown in FIG. , a new problem arises in that the leading edge of the original 6 gets caught in the pressure spring 3 and is not fully inserted, and due to the presence of the introduction member 5, the original 6 does not come into contact with the paper feed roller 2, making it impossible to feed the paper. was there.
本発明は、上述の問題点に鑑みて為されたもので、多数
枚の原稿等の用紙を給紙位置に挿入しても良好に給紙す
ることの可能な自動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, and an object of the present invention is to provide an automatic paper feeder that can properly feed paper even when a large number of sheets of paper such as originals are inserted into the paper feed position. With the goal.
問題点を解決するための手段
本発明は上述の問題点を解決するため、給紙ローラの上
流側において、ガイドから用紙を給紙ローラ外周面に案
内するように配置された導入部材の、用紙を給紙ローラ
に押付ける押圧ばねに対応する部分に切欠きを設けると
(、)う構成を備えたものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has a paper introducing member arranged on the upstream side of the paper feed roller so as to guide the paper from a guide to the outer peripheral surface of the paper feed roller. A notch is provided in a portion corresponding to a pressure spring that presses the paper feed roller against the paper feed roller.
作 用
本発明は上述の構成によって、比較的多数枚の用紙を給
紙ローラと抑圧はねとの間に挿入した場合において、用
紙の挿入が十分でなくても、押圧ばねがその用紙を導入
部材の切欠きを介して給紙ローラに直接押し付けており
、給紙ローラによって用紙を確実に給送することができ
る。Effect of the Invention With the above-described structure, the present invention allows the pressing spring to introduce the paper even if the paper is not inserted sufficiently when a relatively large number of sheets are inserted between the paper feed roller and the suppression spring. The member is directly pressed against the paper feed roller through the notch, and the paper can be reliably fed by the paper feed roller.
実施例
第1図は本発明を原稿の自動給紙装置に適用した実施例
を示す概略斜視図、第2図はその断面図であり、第3図
〜第5図に示す従来例と同様な部品には同一符号を付け
て示している。第1図、第2図において、1は、給紙す
べき用紙である原稿6を載せるための原稿ガイド、2は
外周面が原稿ガイド1によりわずかに突出するように配
置された給紙ローラ、3は原稿を給紙ローラ2に押付け
るための押圧ばねである。押圧ばね3は通常板ばねで構
成され、原稿をこの押圧ばね3と給紙ローラ2との間に
容易に挿入しうるよう、給紙ローラ2外周面に対して鋭
角をなすように配置されている。4は給紙ローラ2と協
働して原稿の電送を防止する分離片、5は、給紙ローラ
2の上流側において原稿ガイド1に椿って挿入される原
稿を給紙ローラ2の外周面に当接するように案内する導
入部材である。この導入部材5は低摩擦で可撓性のフィ
ルム又はシートから構成され、原稿ガイド1に固定され
ると共に先端部分を給紙ローラ2の外周面に当接させて
いる。導入部材5の先端縁は、押圧ばね4の給紙ローラ
2に対する接触点よりも少し手前(上流側)で終ってい
る。更に、第1図からよくわかるように、導入部材5の
先端部分には、押圧ばね3に対応する部分に切欠き7を
形成している。なお、切欠き7の形状を図示実施例では
円弧形状としているが、切欠き7の形状はこれに限らず
任意である。Embodiment FIG. 1 is a schematic perspective view showing an embodiment in which the present invention is applied to an automatic document feeder, and FIG. 2 is a sectional view thereof, which is similar to the conventional example shown in FIGS. 3 to 5. Parts are shown with the same reference numerals. In FIGS. 1 and 2, 1 is a document guide for placing a document 6, which is a sheet to be fed; 2 is a paper feed roller arranged so that its outer peripheral surface slightly protrudes from the document guide 1; Reference numeral 3 denotes a pressing spring for pressing the original against the paper feed roller 2. The pressure spring 3 is usually composed of a leaf spring, and is arranged at an acute angle to the outer peripheral surface of the paper feed roller 2 so that the document can be easily inserted between the pressure spring 3 and the paper feed roller 2. There is. Reference numeral 4 denotes a separation piece that cooperates with the paper feed roller 2 to prevent the document from being electrically transported; and 5 indicates a separation piece that prevents the document from being electrically fed in cooperation with the paper feed roller 2; This is an introduction member that guides the guide so that it comes into contact with the guide member. The introducing member 5 is made of a low-friction, flexible film or sheet, is fixed to the document guide 1, and has its tip abutted against the outer peripheral surface of the paper feed roller 2. The leading edge of the introduction member 5 ends slightly before (on the upstream side) the contact point of the pressure spring 4 with the paper feed roller 2. Furthermore, as can be clearly seen from FIG. 1, a notch 7 is formed at the tip of the introduction member 5 at a portion corresponding to the pressure spring 3. Note that although the shape of the notch 7 is an arc shape in the illustrated embodiment, the shape of the notch 7 is not limited to this and may be any shape.
以上の構成になる自動給紙装置について、以下その動作
を説明する。The operation of the automatic paper feeder having the above configuration will be described below.
送信者が原稿ガイド1上に沿って複数枚の原稿6を矢印
六方向に挿入して所定位置にセットする。A sender inserts a plurality of originals 6 along the original guide 1 in the six directions of arrows and sets them at a predetermined position.
この操作によって、原稿6は低摩擦の導入部材5上を滑
動して前進し、給紙ローラ2と押圧ばね3の間に挿入さ
れ、押圧ばね3によって給紙ローラ2に適当な圧力で当
接させられる。この状態で、給紙ローラ2が矢印日方向
に回転すると、給紙ローラ2は当接している原稿6を摩
擦力によって引き出し、分離片4で重送を防止し、原稿
を最下層から1枚ずつ給送する。By this operation, the original 6 slides forward on the low-friction introducing member 5, is inserted between the paper feed roller 2 and the pressure spring 3, and is brought into contact with the paper feed roller 2 with appropriate pressure by the pressure spring 3. I am made to do so. In this state, when the paper feed roller 2 rotates in the direction of the arrow, the paper feed roller 2 pulls out the document 6 that is in contact with it by frictional force, prevents double feeding with the separation piece 4, and feeds the document one sheet from the bottom layer. feed one by one.
次に、多数枚の原稿6をセットした場合には、第2図に
示すように、原稿6の先端が押圧ばね2に突き当たり、
導入部材5の先端縁よりも上流の位置で止まることがあ
る。この場合には、原稿6は押圧ばね3によって導入部
材5をはさんで給紙ローラ2に押付けられることになる
が、前記したように導入部材5は押圧ばね3に対応する
部分に切欠き7を形成しているので、この切欠き7の部
分で原稿6が直接給紙ローラ2の外周面に当接すること
となる。これにより、給紙ローラ2が回転した時、原稿
6は給紙ローラ2によって繰り出され、良好に給送され
る。Next, when a large number of documents 6 are set, as shown in FIG.
It may stop at a position upstream of the leading edge of the introducing member 5. In this case, the original 6 is pressed against the paper feed roller 2 by the pressure spring 3 with the introduction member 5 sandwiched therebetween, but as described above, the introduction member 5 has a notch 7 in a portion corresponding to the pressure spring 3. , so the document 6 comes into direct contact with the outer circumferential surface of the paper feed roller 2 at this notch 7 portion. As a result, when the paper feed roller 2 rotates, the document 6 is fed out by the paper feed roller 2 and is well fed.
なお、上記実施例は本発明を原稿の自動給紙装置に適用
したものであるが、本発明は原稿の給紙に限らず、他の
任意の用紙、例えば記録紙の自動給紙にも適用可能であ
ることは言うまでもない。Although the above embodiment applies the present invention to an automatic document feeder, the present invention is not limited to the automatic document feeder, but can also be applied to any other paper such as recording paper. It goes without saying that it is possible.
発明の効果
以上の説明から明らかなように、本発明は、給紙ローラ
の上流側において、ガイドから用紙を給紙ローラ外周面
に案内するように配置された導入部材の、用紙を給紙ロ
ーラに押付ける押圧ばねに対応する部分に切欠きを設け
るという構成としているので、比較的多数枚の用紙を給
紙ローラと押圧ばねとの間に挿入した場合において、用
紙の挿入が十分でなくても、押圧ばねがその用紙を導入
部材の切欠きを介して給紙ローラに直接押し付けており
、給紙ローラによって用紙を確実に給送することができ
るという効果を有するものである。Effects of the Invention As is clear from the above description, the present invention has an introduction member arranged to guide the paper from a guide to the outer peripheral surface of the paper feed roller on the upstream side of the paper feed roller. Since the structure is such that a notch is provided in the part corresponding to the pressure spring that presses the paper, when a relatively large number of sheets of paper are inserted between the paper feed roller and the pressure spring, there is no need to insert the paper sufficiently. Also, the pressing spring directly presses the paper against the paper feed roller through the notch of the introduction member, and the paper has the effect that the paper can be reliably fed by the paper feed roller.
第1図は本発明の一実施例による自動給紙装置を示す4
既略斜視図、第2図はその断面図、第3図は従来の自動
給紙装置の例を示す概略斜視図、第4図はその断面図、
第5図はその装置に比較的多数枚の原稿をセントした状
態を示す断面図である。
1・・・・・原稿ガイド、2・・・・・・給紙ローラ、
3・・・・・・押圧ばね、4・・・・・・分離片、5・
・・・導入部材、6・・・・原稿、7・・・・・・切欠
き。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名1−
原稿ガイド
第1図 2−給紙ローラ
3−押圧1f澹
4−分離片
5− 導入部材
第 3 図
第4図FIG. 1 shows an automatic paper feeder according to an embodiment of the present invention.
FIG. 2 is a schematic perspective view, FIG. 2 is a sectional view thereof, FIG. 3 is a schematic perspective view showing an example of a conventional automatic paper feeder, and FIG. 4 is a sectional view thereof.
FIG. 5 is a sectional view showing a state in which a relatively large number of original documents are loaded into the apparatus. 1...Document guide, 2...Paper feed roller,
3... Pressing spring, 4... Separation piece, 5...
...Introduction member, 6...Manuscript, 7...Notch. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
Document guide Fig. 1 2 - Paper feed roller 3 - Pressure 1f 4 - Separation piece 5 - Introducing member Fig. 3 Fig. 4
Claims (1)
された用紙に当接して用紙を繰り出す給紙ローラと、前
記用紙を給紙ローラに押付ける押圧ばねと、前記給紙ロ
ーラの上流側においてガイドから用紙を給紙ローラ外周
面に案内する導入部材とを備え、この導入部材の前記押
圧ばねに対応する部分に切欠きを設けていることを特徴
とする自動給紙装置。A guide for placing a plurality of sheets of paper, a paper feed roller that comes into contact with the paper set on the guide and feeds out the paper, a pressure spring that presses the paper against the paper feed roller, and an upstream side of the paper feed roller. An automatic paper feeder comprising: an introduction member that guides paper from a guide to an outer circumferential surface of a paper feed roller, and a cutout is provided in a portion of the introduction member corresponding to the pressure spring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62332101A JP2517033B2 (en) | 1987-12-28 | 1987-12-28 | Automatic paper feeder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62332101A JP2517033B2 (en) | 1987-12-28 | 1987-12-28 | Automatic paper feeder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01172141A true JPH01172141A (en) | 1989-07-07 |
JP2517033B2 JP2517033B2 (en) | 1996-07-24 |
Family
ID=18251159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62332101A Expired - Fee Related JP2517033B2 (en) | 1987-12-28 | 1987-12-28 | Automatic paper feeder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2517033B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6883798B2 (en) * | 2002-01-23 | 2005-04-26 | Benq Corporation | Sheet feeder for media-feed mechanism |
JP2013112513A (en) * | 2011-11-30 | 2013-06-10 | Brother Industries Ltd | Sheet feeding unit |
CN104803219A (en) * | 2014-01-29 | 2015-07-29 | 夏普株式会社 | Sheet feeding device and image forming apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5610438U (en) * | 1979-06-30 | 1981-01-29 | ||
JPS57203036U (en) * | 1981-06-19 | 1982-12-24 |
-
1987
- 1987-12-28 JP JP62332101A patent/JP2517033B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5610438U (en) * | 1979-06-30 | 1981-01-29 | ||
JPS57203036U (en) * | 1981-06-19 | 1982-12-24 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6883798B2 (en) * | 2002-01-23 | 2005-04-26 | Benq Corporation | Sheet feeder for media-feed mechanism |
JP2013112513A (en) * | 2011-11-30 | 2013-06-10 | Brother Industries Ltd | Sheet feeding unit |
CN104803219A (en) * | 2014-01-29 | 2015-07-29 | 夏普株式会社 | Sheet feeding device and image forming apparatus |
JP2015140246A (en) * | 2014-01-29 | 2015-08-03 | シャープ株式会社 | Paper feeder and image formation apparatus |
US9403650B2 (en) | 2014-01-29 | 2016-08-02 | Sharp Kabushiki Kaisha | Sheet feeding device and image forming apparatus |
CN104803219B (en) * | 2014-01-29 | 2017-08-08 | 夏普株式会社 | Paper feed and image processing system |
Also Published As
Publication number | Publication date |
---|---|
JP2517033B2 (en) | 1996-07-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH06286893A (en) | Sheet feeder | |
JPH0238496B2 (en) | ||
JPH01172141A (en) | Automatic sheet supply device | |
JPS6097138A (en) | Automatic sheet feeder | |
JPH0539136A (en) | Automatic sheet feeder | |
JPH054740A (en) | Envelope feed cassette | |
JP2005053645A (en) | Paper feed tray and paper feed device with the same | |
JPH078498Y2 (en) | Paper feeder | |
JPH05238572A (en) | Automatic paper feeder | |
JPH0248339A (en) | Sheet feeding device | |
JPS62249841A (en) | Automatic sheet feeder | |
JPS6097137A (en) | Automatic sheet feeder | |
JP2722249B2 (en) | Automatic paper feeder | |
JPH0356338A (en) | Overlapped feeding preventing structure | |
JPH01275343A (en) | Paper supply cassette device | |
JPH02138042A (en) | Sheet supply device | |
JP2005112525A (en) | Document transporting device | |
JP2665262B2 (en) | Paper feeder for office equipment | |
JPS58100038A (en) | Automatic paper feed device | |
JPS58221862A (en) | Original feeder for copying machine | |
JPH0725431B2 (en) | Paper feeder | |
JPH01220649A (en) | Sheet feeder | |
JPH05105250A (en) | Paper sheet feeder | |
JPH0532337A (en) | Automatic sheet feed device | |
JPH02295832A (en) | Automatic paper sheet feeding device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |