JPH0326618A - Original separation device - Google Patents

Original separation device

Info

Publication number
JPH0326618A
JPH0326618A JP16108289A JP16108289A JPH0326618A JP H0326618 A JPH0326618 A JP H0326618A JP 16108289 A JP16108289 A JP 16108289A JP 16108289 A JP16108289 A JP 16108289A JP H0326618 A JPH0326618 A JP H0326618A
Authority
JP
Japan
Prior art keywords
document
self
roller
feeding roller
original
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
Application number
JP16108289A
Other languages
Japanese (ja)
Inventor
Isao Myokan
明官 功
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP16108289A priority Critical patent/JPH0326618A/en
Publication of JPH0326618A publication Critical patent/JPH0326618A/en
Pending legal-status Critical Current

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  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

PURPOSE:To ensure the separate feed of a lot of originals or special printed matters in an original separation device for a facsimile by providing a feed roller with the dia. larger than a self-contained roller in a coaxial manner with the self-contained roller in a pair. CONSTITUTION:A self-contained roller 3 and a feed roller 8 with the dia. larger than that are provided in a side pair on an axis 7, as illustrated. In this way, even if originals 2 have heavy wt. applied to the bottom-layer original because of a lot of numbers and are fed in an opposite arrangement, the tip of the bottom-layer original 2 reaches the large-dia. feed roller 8 so that the tip of the original 2 is fed near to the separation point of the self-contained roller 3 by the counterclockwise rotation of the feed roller 8 to allow normal separation. Even a lot of originals or special printed matters can be surely separation- fed, accordingly.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、ファクシミリ装置やドキュメントスキャナ
ーにおいて、複数葉の原稿を一枚ずつ分離して次工程に
供給する原稿分離装置に関し、特に、分離パットとの間
で原稿を一枚ずつ分離する自給ローラの同軸上に、自給
ローラより稍大径の送紙ローラを対設し、最下葉の原稿
を積極的に分離点に送紙する原稿分離装置に関する。
Detailed Description of the Invention [Industrial Application Field] The present invention relates to a document separating device used in facsimile machines and document scanners, which separates multiple sheets of document one by one and supplies them to the next process. A paper feed roller with a slightly larger diameter than the self-feeding roller is installed coaxially with the self-feeding roller that separates the originals one by one from the self-feeding roller, and the document separation system actively feeds the bottom document to the separation point. Regarding equipment.

[発明の背景] 従来、ファクシミリ装置やドキュメントスキャナーにお
いて、例えば、第5図で示すように原稿スタッカ1に積
載された送信する原稿2の紙先が分離パット5等に接触
すると、ADFセンサ(図示しない)が作動して自給ロ
ーラ3が反時計方向に回転し、抑えパネ6で自給ローラ
3側付勢された分離パット5との間で最下葉の原稿2a
から順次分離して、自給ローラ3の下方に配置された光
学読取部へ一枚ずつ搬送していた。
[Background of the Invention] Conventionally, in a facsimile machine or a document scanner, when the paper edge of a document 2 to be transmitted loaded on a document stacker 1 comes into contact with a separation pad 5 or the like as shown in FIG. ) is activated, the self-feeding roller 3 rotates counterclockwise, and the lowermost document 2a is separated from the separation pad 5 which is biased toward the self-feeding roller 3 by the presser panel 6.
The sheets were separated one after another and conveyed one by one to an optical reading section located below the self-supplying roller 3.

この時、最下葉の原稿2aは、 ・自給ローラ3と原稿2とのg擦係数μ1、・分離パッ
ト5と原稿2との摩擦係数μ2、・原稿2と原fil2
との摩擦係数μ3、・抑えバネ6の自給ローラ3表面(
原稿表面)に対して垂直方向の付勢力N、 ・積載した原稿20重量による最下葉の原稿2aに対し
て垂直方向の力N′ (上記N,N’の方向は、原稿2に 対して垂直方向に働くものとする。) 但し、原稿スタッカ1に積載する原稿2の量が多いN’
 >Hの時には、原稿2が分離パット5を押し上げる可
能性があるので、積載できる原w42の枚数を規制して
N’ >NとならないようN’ユNと設計されたものと
する。
At this time, the bottom document 2a is: - g friction coefficient μ1 between self-feeding roller 3 and document 2, friction coefficient μ2 between separation pad 5 and document 2, and document 2 and original film 2.
Coefficient of friction μ3 between the self-supporting roller 3 surface of the restraining spring 6 (
A biasing force N in a direction perpendicular to the document surface), - A force N' in a direction perpendicular to the bottom document 2a due to the weight of the loaded document 20 (The directions of N and N' above are (It shall work in the vertical direction.) However, if the amount of documents 2 to be stacked on the document stacker 1 is large, N'
>H, there is a possibility that the original 2 pushes up the separation pad 5, so the number of originals w42 that can be stacked is restricted so that N'>N is not satisfied.

上記のような関係において、自給ローラ3と分離パット
5によって分離された紙先における搬送力が(μ1−μ
2)N1上部に他の原稿2が載置されている部分におけ
る搬送力と反対方向の力が、μ3N’であるので、 (μ1−μ2) N−μ3N’ の搬送力で次工程に送られる。
In the above relationship, the conveying force at the paper edge separated by the self-feeding roller 3 and separation pad 5 is (μ1−μ
2) The force in the opposite direction to the conveying force at the part where the other document 2 is placed on top of N1 is μ3N', so it is sent to the next process with the conveying force of (μ1-μ2) N-μ3N' .

しかし、下から二枚目の原稿2は、 (μ3−μ2)N<0 となり、分離パット5によって進行が阻止される。However, manuscript 2, the second page from the bottom, (μ3−μ2)N<0 Therefore, the separation pad 5 prevents the progress.

その後、最下葉の原稿2aが分離点を通過すると、上記
の下から二枚目の原稿2が最下葉となり、同様の原理で
分離搬送される。
Thereafter, when the lowest document 2a passes through the separation point, the second document 2 from the bottom becomes the lowest document and is separated and conveyed using the same principle.

[発明が解決しようとする課Ml 近年、ファクシミリ装置やドキュメントスキャナーでは
少なくとも50枚〜100枚程度の送信する原稿を確実
に分離して搬送する能力が必要になった。
[Problems to be Solved by the Invention Ml In recent years, facsimile machines and document scanners have become required to have the ability to reliably separate and transport at least 50 to 100 original documents to be transmitted.

一方、送信原稿の摩擦係数も一様ではなく、摩擦係数が
表裏異なる印刷物も増えてきた。
On the other hand, the coefficient of friction of transmitted documents is not uniform, and the number of printed materials with different coefficients of friction on the front and back is increasing.

これらの原稿を原稿スタッカに一度に50枚〜100枚
位¥II@すると、原稿スタッカとの摩擦によって第6
図で示すように逆揃え状態となり、最下葉の原稿が自給
ローラに達せず、巻き込み不良を起こしたり、たとえ、
最下葉の原稿が送られても次のものがフィールドされな
いことがあった。
If you place about 50 to 100 sheets of these documents on the document stacker at a time, the friction with the document stacker will cause the
As shown in the figure, the original is reversely aligned, and the bottom sheet of the original does not reach the self-feeding roller, causing a feeding error, even if
Even if the bottom page of the document was sent, the next one was sometimes not fielded.

さらに、原稿の枚数が多く重量のために、自給ローラの
搬送力が不足して巻き込み不良が多発する。
Furthermore, due to the large number and weight of the originals, the conveying force of the self-feeding rollers is insufficient, resulting in frequent occurrence of mis-engaging.

また、特殊な印刷物の場合には、μ2Nの阻止力が増加
して自給ローラが機能しないことがあった。
Furthermore, in the case of special printed matter, the blocking force of μ2N may increase and the self-feeding roller may not function.

二の発明は、上記の点に鑑みなされたもので、大量の原
稿や特殊な印刷物でも確実に一枚ずつ分離して次工程に
送る原稿分離装置の提供を目的とする。
The second invention has been made in view of the above points, and aims to provide a document separating device that reliably separates a large number of documents or special printed matter one by one and sends them to the next process.

[課題を解決するための手段] 上述の課題を解決するため、′この発明においては、原
稿スタッカ上に積載された原稿を自給ローラと分離パッ
トによって一枚ずつ分離して次工程に送る原稿分離装置
において、自給ローラより稍大径の送紙ローラを自給ロ
ーラと同軸上に対設したことを特徴とするものである。
[Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention, the originals stacked on the original stacker are separated one by one using a self-feeding roller and a separation pad, and the originals are sent to the next process. The apparatus is characterized in that a paper feed roller having a slightly larger diameter than the self-feeding roller is disposed coaxially with and opposite to the self-feeding roller.

[作 用] 例えば、第2図で示す原稿分離装置において、原稿2の
重量が重かったり、第6図で示すように逆揃えで供給さ
れても、最下葉の原稿2の紙先が大径の送紙ローラ8に
達しているので、送紙ローラ8の反時計方向の回転に伴
い、その原稿2の紙先を自給ローラ3の面上(分離点近
く)に送り、正常な原稿分離を行なう。
[Function] For example, in the document separating device shown in FIG. 2, even if the document 2 is heavy or is fed in reverse alignment as shown in FIG. As the paper feed roller 8 rotates counterclockwise, the leading edge of the document 2 is sent onto the surface of the self-feeding roller 3 (near the separation point), and the document is separated normally. Do this.

[実 施 例] 続いて、この発明に係る原稿分離装置の実施の二例をフ
ァクシミリ装置につ゜いて、図面を参照して詳細に説明
する。
[Embodiments] Next, two embodiments of the document separating device according to the present invention will be described in detail with reference to the drawings with respect to a facsimile machine.

第2図において、1は送信する原稿2が積載ざれる傾斜
した原稿スタッカで、原稿2の紙先が自給ローラ3と接
する位置に配設されている。
In FIG. 2, reference numeral 1 denotes an inclined document stacker on which a document 2 to be transmitted is stacked, and is disposed at a position where the leading edge of the document 2 comes into contact with a self-feeding roller 3.

上記の自給ローラ3は、ゴム若しくは発泡性ゴムで成形
され第1図で示すように反時計方向に回転する軸7の略
中央に圧入され、分離パット5とで原稿スタッカ1に積
載ざれた原稿z中の最下葉2aのものから一枚ずつ分離
して、下方に配設された光学読取部(図示しない)に投
送する。
The self-supplying roller 3 is molded from rubber or foamed rubber, and is press-fitted approximately in the center of a shaft 7 that rotates counterclockwise as shown in FIG. The sheets are separated one by one from the lowest leaf 2a in Z and sent to an optical reading section (not shown) disposed below.

分離パット5は、第2図で示すように上部において抑え
バネ6によって自給ローラ3に付勢されている。
As shown in FIG. 2, the separation pad 5 is biased toward the self-supplying roller 3 by a restraining spring 6 at its upper portion.

このとき、各部のWIL擦係数μ1,μ2,μ3および
他に働く力N,N’は、次の通りとする。
At this time, the WIL friction coefficients μ1, μ2, μ3 of each part and the forces N, N' acting on others are as follows.

・自給ローラ3と原稿2との摩擦係数μ1、・分離パッ
ト5と原稿2との摩擦係数μ2、・原稿2と原稿2との
摩擦係数μ3、 ・抑えパネ6の自給ローラ3表面(原稿表面)に対して
垂直方向の付勢力N1 ・積載した原稿2の重量による最下葉の原稿2aに対し
て垂直方向の力N′ (上記N,N’の方向は、原!l42に対して垂直方向
に働くものとする。) 但し、原稿スタッカlに積載する原稿2の量が多いN’
 >Nの時には、原稿2が分離パット5を押し上げる可
能性があるので、積載できる原稿2の枚数を規制してN
’ >NとならないようN’zNと設計されたものとす
る。
・Friction coefficient μ1 between the self-feeding roller 3 and the document 2, ・Friction coefficient μ2 between the separation pad 5 and the document 2, ・Friction coefficient μ3 between the document 2 and the document 2, ・The surface of the self-feeding roller 3 of the holding panel 6 (the surface of the document ) is a force N1 in the vertical direction against the original 2a in the lowermost sheet due to the weight of the loaded originals 2. (The directions of N and N' above are perpendicular to the original !l42. ) However, if the amount of originals 2 loaded on the original stacker l is large
>N, the document 2 may push up the separation pad 5, so the number of documents 2 that can be stacked is regulated.
It is assumed that N'zN is designed so that '>N does not hold.

通常、この分離パット3の阻止力(μ2N=400〜8
00g)を上げるために、抑えバネによる付勢力Nを増
ざなければならないが、Nを増すと原稿2によっては μ1〉μ2′十μ3〉μ2′〉μ3 の関係が成立しなくなり、原稿分離が困難となる(第3
図のN>n2領域)。
Usually, the stopping force of this separation pad 3 (μ2N=400~8
00g), it is necessary to increase the urging force N by the restraining spring, but if N is increased, the relationship μ1>μ2′μ3>μ2′>μ3 no longer holds true depending on the document 2, and the document separation becomes difficult. becomes difficult (third
(N>n2 region in the figure).

自給ローラ3を圧入した軸7は、第1図で示すように送
紙ローラ8,8が対設されている。
As shown in FIG. 1, the shaft 7 into which the self-supplying roller 3 is press-fitted is provided with paper feed rollers 8, 8 facing each other.

送紙ローラ8は、自給ローラ3の直径(φ2o〜φ30
mm)より0.5〜10mm大きい直径のもので、lJ
擦係数の高い材質、例えば、発泡性ゴムを使用する。こ
の発泡性ゴムは、第3図の短かい点線で示すように低い
圧力下で高い摩擦係数(μ1′)を発揮する(第3図の
O<Nl<nOの領域)。
The paper feed roller 8 has a diameter (φ2o to φ30) of the self-feeding roller 3.
mm) with a diameter 0.5 to 10 mm larger than lJ
Use a material with a high coefficient of friction, such as foamed rubber. This foamable rubber exhibits a high coefficient of friction (μ1') under low pressure, as shown by the short dotted line in FIG. 3 (region of O<Nl<nO in FIG. 3).

分離点における搬送力は、 (μ1−μ2−μ3)N(但し、N二N’ )となる。The conveying force at the separation point is (μ1-μ2-μ3)N (however, N2N').

この関係で、最下葉の原稿2aぱ分離ざれる。Due to this relationship, the bottom document 2a is separated.

この時、最下葉の上の原稿2における摩擦は、(μ3−
μ2)N<0 となり、分離パット5によって進行が阻止ざれる。
At this time, the friction on the document 2 on the bottom leaf is (μ3−
μ2) N<0, and the separation pad 5 prevents the progress.

また、この摩擦係数をグラフで表わすと、第3図で示す
ようになる。
Moreover, when this coefficient of friction is expressed in a graph, it becomes as shown in FIG.

通常の原稿の場合は、低く安定しているが、特殊な印刷
物の場合には分離パット5の摩擦係数が自給ローラ3の
Kl擦係数より高く分離されにくいことがわかる。
It can be seen that in the case of normal documents, the friction coefficient is low and stable, but in the case of special printed matter, the friction coefficient of the separation pad 5 is higher than the Kl friction coefficient of the self-feeding roller 3, making separation difficult.

尚、送紙ローラ8は、第1図および第2図で示すような
円筒形のものに限定されるものではなく、第4図で示す
ように表面の一部を切欠くことで自給ローラ3と送紙ロ
ーラ8の送り量の差を拡げることなく、スムーズな補助
送紙を行なうことができる。また、この対設された送紙
ローラ8,8によって原稿2の斜行を防止することがで
きる。
Note that the paper feeding roller 8 is not limited to the cylindrical shape shown in FIGS. Smooth auxiliary paper feeding can be performed without increasing the difference between the feeding amount of the paper feeding roller 8 and the feeding amount of the paper feeding roller 8. Further, the paper feed rollers 8, 8 arranged oppositely can prevent the original 2 from being skewed.

[発明の効果] 以上のように、この発明に係る原稿分離装置は、自給ロ
ーラよりやや大径の送紙ローラを自給ローラと同軸上に
対設したもので、たとえ、第6図で示すように原稿が逆
揃えに供給されて、最下葉の原稿の紙先が自給ローラに
達していなくても、自給ローラの両側に配された送紙ロ
ーラの反時計方向の回転により最下葉の原稿の紙先が自
給ローラに送られる。よって、(μ1−μ2−μ3) 
Nの搬送力で一枚ずつ確実に分離され、光学読取部等の
次工程に搬送ざれる。特に、送紙ローラを発泡性ゴムで
成形することにより一層の効果を発揮させることができ
る。
[Effects of the Invention] As described above, the document separating device according to the present invention has a paper feed roller that has a slightly larger diameter than the self-feeding roller and is coaxially opposed to the self-feeding roller. Even if the document is fed in reverse alignment and the leading edge of the bottom page of the document does not reach the self-feeding roller, the counterclockwise rotation of the feed rollers placed on both sides of the self-feeding roller will feed the bottom page of the document in reverse order. The leading edge of the original is sent to the self-feeding roller. Therefore, (μ1-μ2-μ3)
The sheets are reliably separated one by one by a conveying force of N, and are conveyed to the next process such as an optical reading section. In particular, the effect can be further enhanced by molding the paper feed roller from foamed rubber.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明に係る原稿分離装置の実施の一例を示
す斜視図、第2図はその断面図、第3図は摩擦係数のグ
ラフ、第4図は実施第2例の拡大断面図、第5図は従来
例の断面図、第6図は原稿が逆揃えの場合の断面図であ
る。 ・原稿スタッカ ・原稿 ・自給ローラ ・分離パット ・軸 ・送紙ローラ
FIG. 1 is a perspective view showing an example of implementation of the document separating device according to the present invention, FIG. 2 is a sectional view thereof, FIG. 3 is a graph of the coefficient of friction, and FIG. 4 is an enlarged sectional view of a second implementation example. FIG. 5 is a cross-sectional view of a conventional example, and FIG. 6 is a cross-sectional view of a case where the original is reversely aligned.・Document stacker ・Document ・Self-feeding roller ・Separation pad ・Shaft ・Paper feed roller

Claims (2)

【特許請求の範囲】[Claims] (1)原稿スタッカ上に積載された原稿を自給ローラと
分離パットによって一枚ずつ分離して次工程に送る原稿
分離装置において、 自給ローラより稍大径の送紙ローラを自給ローラと同軸
上に対設したことを特徴とする原稿分離装置。
(1) In the document separation device that separates the originals stacked on the document stacker one by one using a self-feeding roller and a separation pad and sends them to the next process, a paper feed roller with a slightly larger diameter than the self-feeding roller is placed coaxially with the self-feeding roller. A document separating device characterized in that it is installed oppositely.
(2)送紙ローラが、発泡性のゴムローラであることを
特徴とする請求項1記載の原稿分離装置。
(2) The document separating device according to claim 1, wherein the paper feed roller is a foamed rubber roller.
JP16108289A 1989-06-23 1989-06-23 Original separation device Pending JPH0326618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16108289A JPH0326618A (en) 1989-06-23 1989-06-23 Original separation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16108289A JPH0326618A (en) 1989-06-23 1989-06-23 Original separation device

Publications (1)

Publication Number Publication Date
JPH0326618A true JPH0326618A (en) 1991-02-05

Family

ID=15728280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16108289A Pending JPH0326618A (en) 1989-06-23 1989-06-23 Original separation device

Country Status (1)

Country Link
JP (1) JPH0326618A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5528352A (en) * 1992-03-24 1996-06-18 Asahi Kogaku Kogyo Kabushiki Kaisha Electrophotographic apparatus having original separation means
US5820121A (en) * 1996-10-30 1998-10-13 Lan; Chia-Tsui Coaxial sheets separating and delivering device
US6168150B1 (en) 1996-12-25 2001-01-02 Minolta Co., Ltd. Sheet feeder unit
JP2015137155A (en) * 2014-01-21 2015-07-30 シャープ株式会社 Paper feeder and image formation apparatus
US9309069B2 (en) * 2014-03-31 2016-04-12 Brother Kogyo Kabushiki Kaisha Sheet separating apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5528352A (en) * 1992-03-24 1996-06-18 Asahi Kogaku Kogyo Kabushiki Kaisha Electrophotographic apparatus having original separation means
US5820121A (en) * 1996-10-30 1998-10-13 Lan; Chia-Tsui Coaxial sheets separating and delivering device
US6168150B1 (en) 1996-12-25 2001-01-02 Minolta Co., Ltd. Sheet feeder unit
JP2015137155A (en) * 2014-01-21 2015-07-30 シャープ株式会社 Paper feeder and image formation apparatus
US9309069B2 (en) * 2014-03-31 2016-04-12 Brother Kogyo Kabushiki Kaisha Sheet separating apparatus

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