JP2655916B2 - Paper feed mechanism - Google Patents
Paper feed mechanismInfo
- Publication number
- JP2655916B2 JP2655916B2 JP1191813A JP19181389A JP2655916B2 JP 2655916 B2 JP2655916 B2 JP 2655916B2 JP 1191813 A JP1191813 A JP 1191813A JP 19181389 A JP19181389 A JP 19181389A JP 2655916 B2 JP2655916 B2 JP 2655916B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- paper feed
- pad
- feed roller
- feed mechanism
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 〈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。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeding mechanism of a copying machine, a facsimile machine, and the like, and more particularly, to an improvement of a paper feeding mechanism in a paper feeding mechanism.
〈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。<Prior Art> A sheet feeding mechanism of a copying machine, a facsimile machine, or the like is generally provided with a pad member and a torque limiter for preventing double feeding of sheets, in addition to a forward feed roller and a sheet feeding roller.
パッド部材には、フリクションパッドと称される弾性
材で構成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 the pad member, a pad that is in contact with a paper feed roller made of an elastic material called a friction pad and a comb-shaped pad that is arranged in a non-contact state with the paper feed roller are known.
〈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、接触による異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 a friction pad or a torque limiter is used to prevent double feeding of paper, the friction pad or the torque limiter is always in contact with the paper feed roller, so that there is a problem of life due to abrasion. It is necessary to solve problems such as generation of abnormal sound due to contact.
一方、非接触式の櫛状パッドでは、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, in the case of a non-contact type comb pad, the above-mentioned problem does not have to be considered, but when feeding special paper such as an 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。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a paper feed mechanism that can feed paper satisfactorily regardless of the type of paper using a non-contact type pad member that is excellent in wear resistance and does not generate abnormal noise. .
〈課題を解決するための手段〉 この発明は、用紙の重送防止用パ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ーラと重ならない位
置に設けられており、かつ、パッド部材には、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 is a paper feed mechanism including a pad member for preventing double feeding of paper, wherein the pad member is located upstream of a paper feed roller.
It is provided at a position that does not overlap with the paper feed roller when viewed from the side in the sheet conveyance direction, and the pad member is formed with unevenness in a direction crossing the sheet conveyance direction, and at least the protrusion is a sheet passage surface. A sheet feeding mechanism that is disposed so as to protrude from the sheet feeding mechanism.
〈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。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。<Operation> The unevenness formed on the pad member forcibly waves the sheet, so that the sheets are separated one by one. In addition, since the pad member is provided on the upstream side of the paper feed roller and at a position that does not overlap with the paper feed roller, the paper to be discarded is curved more than necessary by the paper feed roller and the pad, and is subjected to excessive squeezing. Never. Therefore, it is possible to expel the rattling sound of the paper during transport.
〈実施例〉 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。<Embodiment> FIG. 1 is an illustrative side view showing a 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II-IIに沿って搬
送方向に直交方向から見た図解図である。FIG. 2 is an illustrative view of the mechanism of FIG. 1 as viewed from a direction orthogonal to a transport direction along a line II-II.
この給紙機構は、用紙Ｐがセットされる用紙台１と、
用紙台１上にセットされた用紙Ｐを繰り出すための前送
りローラ２と、用紙台１上にセットされた用紙の先端を
揃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、前送りコロ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。The paper feeding mechanism includes a paper table 1 on which the paper P is set,
A forward feed roller 2 for feeding out the paper P set on the paper base 1, a leading end regulating plate 3 for aligning the leading ends of the papers set on the paper base 1, and a guide plate for guiding the conveyed paper. 4, 5 and 6, and a paper feed roller 7 for feeding the paper fed by the advance roller 2 to the inside.
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に一定の力が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 formed integrally. The paper table 1 is provided so as to be able to swing up and down in FIG. 1, and even if the amount of paper P set thereon changes, the uppermost surface of the paper P is fixed to the forward roller 2. The force of the pressure contact.
給紙機構には、さらに、取付板８に取付けられたパッ
ド９が備えられている。パッド９は、この実施例ではウ
レタンゴムで形成されている。The sheet feeding mechanism further includes a pad 9 attached to the attachment plate 8. The pad 9 is formed 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 パッド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10と凹部11とが交互に形成された櫛状パッ
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11も用
紙通過面Ｔから突出していてもよい。The feature of this embodiment is that the position of the pad 9 is on the upstream side of the paper feed roller 7 and, as shown in FIG.
Being provided at a position that does not overlap with the paper feed roller 7,
As shown in FIG. 2, the pad 9 employs a comb-shaped pad in which convex portions 10 and concave portions 11 are alternately formed in a direction crossing the paper transport direction. At least the convex portion 10 is formed as shown in FIG. As shown in the figure, it is arranged so as to protrude from the sheet passing surface T. In addition, not only the convex portion 10 of the pad 9 but also the concave portion 11 may protrude from the sheet passing surface 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枚ずつさばくことができる。し
かも、パッド９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 this, the pads 9 can be separated one by one while the paper is conveyed by the convex portions 10 and the concave portions 11 of the pad 9 in the cross direction in the conveyance direction. Moreover, since there is a certain gap between the pad 9 and the paper feed roller 7, the paper is not bent more than necessary.
よって、OHPフィルム等の静電気が帯電しやすい材質
の用紙や、厚みのある用紙の場合でも、用紙がビビリ音
を発生することがなくなった。Therefore, even if the paper is made of a material such as an OHP film or the like which is easily charged with static electricity or the paper is thick, the paper does not generate chatter 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等に採用することができる。The paper feed mechanism according to the present invention can be employed in various mechanisms for taking a sheet into the apparatus. For example, a paper feed mechanism for taking in paper from a paper cassette in a copier, a paper feed mechanism for taking in paper from a manual feed port, and a paper supply for taking in paper set in an intermediate tray for refeeding. The present invention can be applied to a paper mechanism, a paper feeding mechanism in a facsimile machine, and the like.
〈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 feed mechanism that is excellent in durability and reliably prevents double feeding of sheets. In particular, even when feeding special paper such as an OHP film or a thick paper, it is possible to provide a paper feeding mechanism which can surely prevent double feeding and does not generate chattering 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。 第２図は、第１図の線II-II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、10……凸部、11……
凹部、を示す。FIG. 1 is an illustrative side view showing the configuration of a sheet feeding mechanism according to one embodiment of the present invention. FIG. 2 is a view along the line II-II in FIG. In the figure, 2... Forward feed roller, 3.
7 ... paper feed roller, 9 ... pad, 10 ... convex part, 11 ...
Recess.
Claims (1)
構にあって、 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ーラと重ならない位置に設けられて
おり、かつ、パッド部材には、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。In a paper feed mechanism including a pad member for preventing double feed of paper, the pad member is located at a position upstream of the paper feed roller and not overlapping with the paper feed roller when viewed from the side in the paper conveyance direction. And the pad member is formed with a projection and a depression in a direction crossing the sheet conveyance direction, and at least the projection is arranged so as to protrude with respect to the sheet passage surface. , Paper feed mechanism.
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 JPH0356336A (en) | 1991-03-11 |
| JP2655916B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2471729B1 (en) | 2010-12-31 | 2015-06-03 | Neopost Technologies | Sheet item feeder |
-
1989
- 1989-07-25 JP JP1191813A patent/JP2655916B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0356336A (en) | 1991-03-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs 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 |