JPH0356336A - Paper feed mechanism - Google Patents
Paper feed mechanismInfo
- Publication number
- JPH0356336A JPH0356336A JP1191813A JP19181389A JPH0356336A JP H0356336 A JPH0356336 A JP H0356336A JP 1191813 A JP1191813 A JP 1191813A JP 19181389 A JP19181389 A JP 19181389A JP H0356336 A JPH0356336 A JP H0356336A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- pad
- paper feed
- sheet
- feed roller
- 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
- 230000007246 mechanism Effects 0.000 title claims description 22
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 244000145845 chattering Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
く産業上の利用分野〉
この発明は、複写機やファクシミリ装置等の給紙機構に
関し、特に、給紙機構における用紙の重送防止構造の改
良に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a paper feeding mechanism of a copying machine, a facsimile machine, etc., and particularly relates to an improvement in a structure for preventing double feeding of paper in a paper feeding mechanism.
く従来の技術〉
複写機やファクシミリ装置等の給紙機構には、前送りロ
ーラや給紙ローラの他に、通常、用紙の重送防止のため
にパッド部材やトルクリミッタが設けられている。BACKGROUND OF THE INVENTION Paper feeding mechanisms such as copying machines and facsimile machines are usually provided with a pad member and a torque limiter in addition to advance rollers and paper feeding rollers to prevent double feeding of sheets.
パッド部材には、フリクションパッドと称される弾性制
で構戊された給紙ローラと接触するタイプや、給紙ロー
ラと非接触状態で配置された櫛状タイプのパッドが知ら
れている。As pad members, there are known types such as friction pads, which are made of elastic material and come into contact with the paper feed roller, and comb-shaped pads that are arranged in a non-contact state with the paper feed roller.
く発明が解決しようとする課題〉
用紙の重送防止用にフリクションパッドやトルクリミッ
タを採用する場合、フリクションパッドやトルクリミッ
タが常時給紙ローラと接触している関係上、摩耗による
寿命の問題や、接触による具常音の発生等の問題を解決
する必要がある。Problems to be Solved by the Invention When using a friction pad or torque limiter to prevent double feeding of paper, since the friction pad or torque limiter is constantly in contact with the paper feed roller, problems such as longevity due to wear and tear may occur. It is necessary to solve problems such as generation of concrete noise due to contact.
一方、非接触式の櫛状バッドでは、上述の問題は考慮し
なくてもよいが、OHP用フィルムなどの特殊紙を給送
する場合に、特殊紙がビビリ音を発生するという不具合
があった。On the other hand, with non-contact type comb-shaped pads, the above-mentioned problems do not need to be considered, but when feeding special paper such as OHP film, there is a problem that the special paper generates a chattering sound. .
それゆえ、この発明は、耐摩耗性に優れ、異音発生もな
い非接触式のパッド部材を用いて用紙の種類に関係なく
良好に給紙が行える給紙機構を提供することを目的とす
る。Therefore, an object of the present invention is to provide a paper feeding mechanism that can feed paper well regardless of the type of paper using a non-contact pad member that has excellent wear resistance and does not generate abnormal noise. .
く課題を解決するための手段〉
この発明は、用紙の重送防1}.用バッド部材を含む給
紙機構であって、パッド部材は、給紙ローラの上流側で
、用紙搬送方向側面側から見て給紙ロラと重ならない位
置に設けられており、かつ、パッド部ヰ4には、用紙搬
送方向に交差方向に凸凹が形成されていて、少なくとも
凸部は、用紙通過面に対して突出するように配置されて
いることを特徴とする給紙機構である。Means for Solving the Problems〉 The present invention provides a method for preventing heavy paper feeding. The pad member is provided upstream of the paper feed roller at a position that does not overlap with the paper feed roller when viewed from the side in the paper conveyance direction, and the pad member 4 is a paper feeding mechanism characterized in that unevenness is formed in a direction transverse to the paper conveyance direction, and at least the protrusion is arranged so as to protrude with respect to the paper passing surface.
く作用〉
パッド部材に形成された凸凹は、用紙を強制的に波打た
せるので、用紙は1枚1枚さばかれる。Effect> The unevenness formed on the pad member forcibly waves the paper, so that the paper is separated one by one.
また、パッド部材は給紙ローラの上流側で、給紙ローラ
と重ならない位置に設けられているので、給紙ローラと
パッドとによって、さばかれる用紙が必要以上に湾曲さ
れ、無理なしごきを受けることはない。よって、搬送時
の用紙のビビリ音を追放できる。In addition, since the pad member is provided upstream of the paper feed roller at a position that does not overlap with the paper feed roller, the paper to be handled is curved more than necessary by the paper feed roller and the pad, and is subjected to forced straining. Never. Therefore, it is possible to eliminate the chattering sound of the paper during conveyance.
く失施例〉
第1図は、この発明の一実施例に係る複写機の給紙機構
の構成を示す図解的な側面図である。Embodiments FIG. 1 is a schematic side view showing the configuration of a paper feeding mechanism of a copying machine according to an embodiment of the present invention.
また、第2図は、第1図の機構を線■−Hに沿って搬送
方向に直交方向から見た図解図である。Moreover, FIG. 2 is an illustrative view of the mechanism of FIG. 1 viewed from a direction orthogonal to the conveying direction along line -H.
この給紙機構は、用紙Pがセッ1・される用紙台1と、
用紙台1上にセッ1・された用紙Pを繰り出すための前
送りローラ2と、用紙台1上にセツ1〜された用紙の先
端を崩えるための先端規制板3と、搬送される用紙を案
内するガイド板4,5.6と、前送リコロ2で繰り出さ
れた用紙を内部へ給送するための給紙ローラ7とを含ん
でいる。This paper feeding mechanism includes a paper table 1 on which paper P is set;
A forward feed roller 2 for feeding out the paper P set on the paper table 1, a leading edge regulation plate 3 for breaking the leading edge of the paper set on the paper table 1, and a sheet to be conveyed. It includes guide plates 4, 5.6 for guiding the paper, and a paper feed roller 7 for feeding the paper fed out by the advance reroller 2 into the interior.
なお、この実施例では、先端規制板3とガイド板4とは
一体的に形成されている。また、用紙台1は、第1図に
おいて上下に揺動可能に設けられていて、その上にセッ
トされた用紙Pの量が変化しても、用紙Pの最上面を前
送りローラ2に一定の力で圧接するようにされている。In this embodiment, the tip regulating plate 3 and the guide plate 4 are integrally formed. In addition, the paper table 1 is provided so as to be able to swing up and down in FIG. It is designed to press into contact with the force of .
給紙機構には、さらに、取付板8に取付けられたバッド
9が備えられている。バッド9は、この実施例ではウレ
タンゴムて形成されている。The paper feeding mechanism further includes a pad 9 attached to the mounting plate 8. The pad 9 is made of urethane rubber in this embodiment.
この実施例の特徴は、
■ パッド9の配置位置が、給紙ローラ7の上流側であ
って、第1図に示すように用紙搬送方向側面側から見て
、給紙ローラ7と重ならない位置に設けられていること
、および
■ パット9は、第2図に示すように、用紙搬送方向に
交差方向に凸部]0と凹部11とが交力,に形成された
櫛状バッドが採用され、少なくとも凸部10は、第1図
に示すように、用紙通過面Tに対して突出するように配
置されていること、である。なお、パッド9の凸部10
のみならず凹部]1も用紙通過而Tから突出していても
よい。The features of this embodiment are: (1) The pad 9 is placed upstream of the paper feed roller 7 and does not overlap the paper feed roller 7 when viewed from the side in the paper conveyance direction, as shown in FIG. (2) As shown in FIG. 2, the pad 9 is a comb-shaped pad having a convex portion 0 and a concave portion 11 intersecting with each other in the paper conveyance direction. , at least the convex portion 10 is arranged so as to protrude from the paper passing surface T, as shown in FIG. Note that the convex portion 10 of the pad 9
In addition, the recess] 1 may also protrude from the paper passage T.
パッド9をこのようにした結果、用紙搬送時に、パッド
9の凸部10と凹部11とによって、用紙を搬送方向に
交差方向に波打たせて、1−枚ずつさばくことかできる
。しかも、パッドつと給紙ローラ7との間に一定の隙間
があるから、用紙に必要以上の湾曲が生じない。As a result of forming the pad 9 in this manner, when the paper is conveyed, the convex portions 10 and the concave portions 11 of the pad 9 cause the paper to wave in a direction transverse to the conveyance direction, and the paper can be separated one by one. Furthermore, since there is a certain gap between the pad and the paper feed roller 7, the paper does not curve more than necessary.
よって、OHPフィルム等の静電気が帯電しゃ5
すい利質の用紙や、厚みのある用紙の場合でも、川紙が
ビビリ音を発生することがなくなった。Therefore, even in the case of thin paper or thick paper that is not charged with static electricity such as OHP film, the river paper no longer generates chattering noise.
この発明に係る給紙機構は、用紙を装置内へ取込む種々
の機構に採用できる。たとえば複写機における用紙カセ
ットの用紙を取込む際の給紙機構、手差し給紙口からの
用紙を取込む際の給紙機構、中間トレイにセットされた
用紙を再給紙のために取込む給紙機構、ファクシミリ装
置における給紙機構Wに採用することができる。The paper feeding mechanism according to the present invention can be employed in various mechanisms for feeding paper into an apparatus. For example, the paper feed mechanism that takes in paper from the paper cassette in a copying machine, the paper feed mechanism that takes paper from the manual paper feed slot, and the paper feed mechanism that takes in paper set in the intermediate tray for refeeding. It can be adopted as a paper mechanism or a paper feed mechanism W in a facsimile machine.
く発明の効果〉
この発明は、以上のように構成されているので、耐久性
に優れかつ用紙の重送防止が確実に行われる給紙機構を
提供することができる。特に、OHPフィルムや厚手用
紙等の特殊な用紙を給送する際にも、確実に重送防止が
でき、しかも用紙のビビリ音等が発生することのない給
紙機構とすることができる。Effects of the Invention Since the present invention is configured as described above, it is possible to provide a paper feeding mechanism that is excellent in durability and can reliably prevent double feeding of paper. In particular, even when feeding special paper such as OHP film or thick paper, it is possible to provide a paper feeding mechanism that can reliably prevent double feeding and does not generate rattling noise of the paper.
第1図は、この発明の一実施例に係る給紙機構の構成を
示す図解的な側面図である。
6
簗2図は、第1図の線■一■に沿う図である。
図において、2・前送りローラ、3・・先端規制板、7
・・・給紙ローラ、9・・・パッド、1o・・・凸部、
11・・・凹部、を示す。
特許出廟人
代 理 人
三田工業株式会社FIG. 1 is a schematic side view showing the configuration of a paper feeding mechanism according to an embodiment of the present invention. 6 Diagram 2 is a diagram along line ■1■ in Figure 1. In the figure, 2. Advance roller, 3. Tip regulation plate, 7.
...Paper feed roller, 9...Pad, 1o...Protrusion,
11... Indicates a recessed portion. Patent Source Hito Mita Kogyo Co., Ltd.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1191813A JP2655916B2 (en) | 1989-07-25 | 1989-07-25 | Paper feed mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1191813A JP2655916B2 (en) | 1989-07-25 | 1989-07-25 | Paper feed mechanism |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0356336A true JPH0356336A (en) | 1991-03-11 |
JP2655916B2 JP2655916B2 (en) | 1997-09-24 |
Family
ID=16280952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1191813A Expired - Fee Related JP2655916B2 (en) | 1989-07-25 | 1989-07-25 | Paper feed mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2655916B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2471729A1 (en) * | 2010-12-31 | 2012-07-04 | Neopost Technologies | Sheet item feeder |
-
1989
- 1989-07-25 JP JP1191813A patent/JP2655916B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2471729A1 (en) * | 2010-12-31 | 2012-07-04 | Neopost Technologies | Sheet item feeder |
US8517372B2 (en) | 2010-12-31 | 2013-08-27 | Neopost Technologies | Sheet item feeder |
Also Published As
Publication number | Publication date |
---|---|
JP2655916B2 (en) | 1997-09-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090530 Year of fee payment: 12 |
|
LAPS | Cancellation because of no payment of annual fees |