JP2652562B2 - Rubber member to prevent paper feed double feed - Google Patents
Rubber member to prevent paper feed double feedInfo
- Publication number
- JP2652562B2 JP2652562B2 JP28734888A JP28734888A JP2652562B2 JP 2652562 B2 JP2652562 B2 JP 2652562B2 JP 28734888 A JP28734888 A JP 28734888A JP 28734888 A JP28734888 A JP 28734888A JP 2652562 B2 JP2652562 B2 JP 2652562B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- parts
- feed
- paper feed
- double feed
- 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 - Lifetime
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は紙送り重送防止用ゴム部材に関し、詳しく
は複写機、ファクシミリ、印刷機などの給紙装置におけ
る紙送り重送防止用ゴム板、又はゴムローラ等の改良に
関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber member for preventing double feed of paper feed, and more specifically, a rubber plate for preventing double feed of paper in a paper feeder of a copying machine, a facsimile, a printing machine, or the like. Or improvement of rubber rollers and the like.
複写機、ファクシミリあるいは、印刷機などでは印字
部分へ一枚あて給紙が行なわれるよう、第1図に示すよ
うに給紙ローラAに対面して紙送り重送防止用ゴム板、
またはゴムローラ(図示例はゴム板)等の部材Bが配設
される。In a copying machine, a facsimile machine, a printing machine, or the like, a rubber plate for preventing paper feeding and double feeding is provided as shown in FIG.
Alternatively, a member B such as a rubber roller (a rubber plate in the illustrated example) is provided.
この紙送り重送防止用ゴム部材Bは、給紙ローラAの
紙Cに対する表面摩擦抵抗より小さいが、紙同志の表面
摩擦抵抗より大きな表面摩擦抵抗とすることにより、紙
Cが二枚以上重なって給送された場合給紙ローラAと接
する紙Cのみを送り、紙送り重送防止用ゴム部材Bに接
する紙Cをその場に止め、もって重送防止の目的を達す
る構成とされる。The rubber member B for preventing double feed of paper feed has a surface frictional resistance smaller than the surface frictional resistance of the paper feed roller A against the paper C, but is larger than the surface frictional resistance of the papers. When the paper C is fed, only the paper C in contact with the paper feed roller A is fed, and the paper C in contact with the paper feed double feed prevention rubber member B is stopped in place, thereby achieving the purpose of preventing double feed.
上記紙送り重送防止用ゴム部材Bとして、例えば実開
昭60−12546号公報に開示されているように混練可能型
ウレタン(ミラブルウレタン)で成形した板の表面をバ
フ加工することにより紙に対する適度な表面摩擦抵抗と
することや、特公昭62−56061号公報に開示されている
ようにウレタンゴム、ニトリルブタジエン共重合ゴム、
フッ素ゴム、あるいはアクリルゴム等の耐油性ゴムに10
〜80メッシュのコルク粒子を約10〜50重量%混合し、こ
れを表面露出させ硬さ、JISA50〜80゜の板状体に成形し
て適度な表面摩擦抵抗とすることなどが提案されてい
る。As the above-mentioned rubber member B for preventing paper feed and double feed, for example, as disclosed in Japanese Utility Model Application Laid-Open No. Sho 60-12546, the surface of a plate formed of kneadable urethane (millable urethane) is buffed to form a paper. To have an appropriate surface friction resistance, urethane rubber, nitrile butadiene copolymer rubber, as disclosed in JP-B-62-56061,
10 to oil resistant rubber such as fluoro rubber or acrylic rubber
It has been proposed that about 10 to 50% by weight of ~ 80 mesh cork particles be mixed and then exposed to the surface to form a plate having a hardness of JISA 50 to 80 mm to have an appropriate surface friction resistance. .
ところで、前者の紙送り重送防止用ゴム部材にあって
は、材質的に耐摩耗性が良好であり、耐久性の点では良
いものの、摩擦係数が高すぎる傾向が有り、表面バフ加
工によっても、摩擦係数の改良が十分に行ない難く、重
送防止には好都合でも単一紙の給紙時のすべりが悪い欠
点が有った。By the way, the former paper feed double feed prevention rubber member has good abrasion resistance in terms of material and is good in durability, but has a tendency that the coefficient of friction tends to be too high. However, it is difficult to sufficiently improve the coefficient of friction, and there is a disadvantage that slippage during feeding of a single sheet is poor even if it is convenient for preventing double feed.
一方、後者の紙送り重送防止用ゴム部材にあっては混
入したコルク粒によって摩擦係数の改良は非常に良くな
るが、コルク粒の添加に起因して紙送り重送防止用ゴム
部材の耐摩耗性が悪くなり、耐久性が損なわれる欠点が
あった。On the other hand, in the latter rubber member for preventing the paper feed double feed, the improvement of the friction coefficient is greatly improved by the cork particles mixed therein, but due to the addition of the cork particles, the rubber member for preventing the paper feed double feed is resistant. There was a drawback that abrasion deteriorated and durability was impaired.
この発明は、重送防止用ゴム板又は給紙ローラ用とし
て通常使用されるゴム組成物で成形可能であり、しかも
耐摩耗性、摩擦係数が紙送り重送防止用ゴム部材として
好適な条件となし得ることを目的としてなされたもので
ある。The present invention can be molded with a rubber sheet for double feed prevention or a rubber composition usually used for a paper feed roller, and has abrasion resistance and a coefficient of friction suitable for a paper feed double feed prevention rubber member. It is intended to be able to do so.
即ち、この発明の紙送りの重送防止用ゴム部材は天然
ゴム又は合成ゴムを主成分とする組成物に、アスペクト
比10以上の短繊維が、前記ゴム成分100部に対し2〜50
部混合され、該短繊維の一部を表面に露出させて板状又
はロール状に成形して成ることを特徴とするものであ
る。That is, the rubber member for preventing double feed of paper feed of the present invention is a composition mainly composed of natural rubber or synthetic rubber, and a short fiber having an aspect ratio of 10 or more is 2 to 50 parts per 100 parts of the rubber component.
The short fibers are partly mixed and are exposed to the surface to form a plate or a roll.
この発明の紙送り重送防止用ゴム部材に主成分として
使用されるゴム組成物としては、天然ゴム、またはブタ
ジエン系ゴム、エチレンプロピレン、ジエン三元共重合
ゴムなどの合成ゴムが使用可能であり、通常の紙送り重
送防止用ゴム板又はローラ用として通常使用されるゴム
組成物であれば種類は問わない。As the rubber composition used as a main component in the paper feed / double feed prevention rubber member of the present invention, natural rubber, or synthetic rubber such as butadiene rubber, ethylene propylene, or diene terpolymer rubber can be used. Any type of rubber composition can be used as long as it is a rubber composition ordinarily used for ordinary paper feed / double feed prevention rubber plates or rollers.
この発明において添加される短繊維は板状、又はロー
ラ状に成形される成形品の補強、及び耐摩耗性向上のた
めと後述する表面摩擦抵抗の改良のためである。The short fibers added in the present invention are for reinforcing a molded article formed into a plate or a roller and for improving abrasion resistance and for improving a surface friction resistance described later.
この短繊維のアスペクト比を10以上とするのは、10よ
り少ないとゴム成形体の補強効果が発揮できないからで
あり、好ましくはアスペクト比30以上とされる。The reason for setting the aspect ratio of the short fibers to 10 or more is that if the ratio is less than 10, the reinforcing effect of the rubber molded article cannot be exhibited, and the aspect ratio is preferably 30 or more.
また、短繊維の添加量をゴム成分100に対し2〜50部
とするのは、2部より少ないと短繊維補強による耐摩耗
性及び摩擦係数の改良が行なえず、また50部より多くす
ると、混合等の加工が不可能となり、仮に出来ても摩擦
係数が下りすぎて重送防止効果が得られなくなるからで
ある。Further, the addition amount of the short fiber is set to 2 to 50 parts with respect to the rubber component 100, if less than 2 parts can not improve the wear resistance and friction coefficient by short fiber reinforcement, and if more than 50 parts, This is because processing such as mixing becomes impossible, and even if it can be performed, the coefficient of friction is so low that the effect of preventing double feeding cannot be obtained.
この範囲中、10〜30部が好ましい添加量である。 In this range, 10 to 30 parts is a preferable addition amount.
上記ゴム成分に対し混入される短繊維は、一部が表面
に露出され、この露出部分によりゴム自体の有する摩擦
係数が適度に低下され、かつ、ゴム組織中の繊維により
耐摩耗性が付与される。The short fibers mixed with the rubber component are partially exposed on the surface, the friction coefficient of the rubber itself is appropriately reduced by the exposed portions, and the wear resistance is imparted by the fibers in the rubber structure. You.
上記において紙送り重送防止用ゴム部材は表面状態が
肝要であり、従って板状、或いはローラ状等その部材の
形態は特に問わない。In the above description, the surface state of the rubber member for preventing paper feed and double feed is important, and therefore, the form of the member such as a plate or a roller is not particularly limited.
以下、この発明の実施例を説明する。 Hereinafter, embodiments of the present invention will be described.
実施例1 主成分となるゴム組成物として配合表1に示すゴム成
分を用い、このゴム成分100部に対し、太さ6デニー
ル、長さ1mmの66ナイロン繊維を4部添加し、常法によ
って均一混合後、厚さ2mmの板状に成形し、表面をバフ
することにより第2図に示すように繊維1の一部を表面
2Aより露出させ、紙送り重送防止用ゴム板を得た。Example 1 As a rubber composition as a main component, a rubber component shown in Formulation Table 1 was used. To 100 parts of this rubber component, 4 parts of 66 nylon fiber having a thickness of 6 denier and a length of 1 mm were added, and a conventional method was used. After uniform mixing, it is formed into a plate with a thickness of 2 mm, and a part of the fiber 1 is surfaced as shown in Fig. 2 by buffing the surface.
It was exposed from 2A to obtain a rubber plate for preventing paper feed and double feed.
配合表1 メルカプタン変性ポリクロロプレン 100 部 ステアリン酸 1 部 老化防止剤 2 部 カーボンSRF 65 部 アロマティックオイル 10 部 促進剤 0.5部 亜鉛華 5 部 酸化マグネシウム 4 部 実施例2 実施例1における66ナイロン繊維の添加量を11部とし
た他は実施例1と同様にして紙送り重送防止用ゴム板を
得た。Formulation Table 1 Mercaptan-modified polychloroprene 100 parts Stearic acid 1 part Antioxidant 2 parts Carbon SRF 65 parts Aromatic oil 10 parts Accelerator 0.5 parts Zinc white 5 parts Magnesium oxide 4 parts Example 2 A rubber plate for preventing paper feed and double feed was obtained in the same manner as in Example 1 except that the addition amount was changed to 11 parts.
実施例3 実施例1における66ナイロン繊維の添加量を20部とし
た他は実施例1と同様にして紙送り重送防止用ゴム部材
を得た。Example 3 A rubber member for preventing paper feed and double feed was obtained in the same manner as in Example 1 except that the addition amount of 66 nylon fiber in Example 1 was changed to 20 parts.
比較例1 実施例1における短繊維を全く添加せずに、ゴム成分
のみで実施例1と同一形状の紙送り重送防止用ゴム部材
を得た。Comparative Example 1 A paper feed / double feed prevention rubber member having the same shape as that of Example 1 was obtained by using only the rubber component without adding any short fiber in Example 1.
比較例2 実施例1における66ナイロン繊維に替え平均粒子径0.
9mmのコルク粉末を用い、これをゴム成分100に対し20部
添加して実施例1と同様にして紙送り重送防止用ゴム部
材を得た。Comparative Example 2 In place of 66 nylon fiber in Example 1, the average particle diameter was 0.2.
A 9 mm cork powder was used, and 20 parts of the cork powder was added to 100 of the rubber component.
実施例4 主成分となるゴム組成物として配合表2に示すゴム成
分を用い、このゴム成分100部に対し、太さ1.5デニー
ル、長さ3mmのポリアミド繊維(帝人(株)製、商品名
「コーネックス」)を25部添加し、均一混合後、実施例
1と同様にして紙送り重送防止用ゴム部材を得た。Example 4 As a rubber composition as a main component, a rubber component shown in Formulation Table 2 was used, and 100 parts of the rubber component was mixed with a polyamide fiber having a thickness of 1.5 denier and a length of 3 mm (trade name: Teijin Limited, trade name: After adding 25 parts of Conex ") and mixing uniformly, a rubber member for preventing paper feed and double feed was obtained in the same manner as in Example 1.
配合表2 硫黄変性ポリクロロプレン 100 部 ステアリン酸 1 部 老化防止剤 2 部 カーボンHAF 40 部 酸化マグネシウム 4 部 亜鉛華 5 部 実施例5 主成分となるゴム組成物として配合表3に示すゴム成
分を用い、この樹脂100部に対し、実施例1で用いたの
と同じ66ナイロン短繊維を20部添加し、以後は実施例1
と同様にして紙送り重送防止用ゴム部材を得た。Formulation Table 2 Sulfur-modified polychloroprene 100 parts Stearic acid 1 part Antioxidant 2 parts Carbon HAF 40 parts Magnesium oxide 4 parts Zinc white 5 parts Example 5 The rubber component shown in Formulation Table 3 was used as the main rubber composition. To 100 parts of this resin, 20 parts of the same nylon 66 short fiber used in Example 1 were added.
In the same manner as in the above, a rubber member for preventing paper feed and double feed was obtained.
配合表3 架橋可能型ポリウレタン 100 部 ステアリン酸 0.5部 安定剤 3 部 カーボンFEF 30 部 可塑剤(DOP) 5 部 架橋剤 3 部 比較例3 実施例5における短繊維を全く添加せずにゴム成分の
みで、実施例5と同様に紙送り重送防止用ゴム部材を得
た。Formulation 3 Crosslinkable polyurethane 100 parts Stearic acid 0.5 part Stabilizer 3 parts Carbon FEF 30 parts Plasticizer (DOP) 5 parts Crosslinking agent 3 parts Comparative Example 3 Only the rubber component without any short fibers in Example 5 In the same manner as in Example 5, a paper feed / double feed prevention rubber member was obtained.
比較例4 実施例5における66ナイロン短繊維にかえ、比較例2
で用いたコルク粒子を用い、実施例5と同様に紙送り重
送防止用ゴム部材を得た。Comparative Example 4 Comparative Example 2 was replaced with the nylon 66 short fiber in Example 5.
A paper feed / double feed prevention rubber member was obtained in the same manner as in Example 5 using the cork particles used in the above.
上記実施例1〜5、及び比較例1〜4につき、摩擦係
数、摩耗量、耐油性、硬さ、抗張力、伸びにつき試験を
行なったところ、別表の結果となった。For each of Examples 1 to 5 and Comparative Examples 1 to 4, tests were conducted on the coefficient of friction, the amount of wear, the oil resistance, the hardness, the tensile strength, and the elongation.
なお、表中摩擦係数はヘイドン14型摩擦試験機により
測定したもの、摩擦量はDINの試験条件に基づき測定し
たものを示し、耐油性はJIS K 6301に基づきNo.3油を用
い70℃、70時間後のゴム組成物の膨潤量(ΔV)により
測定した。In the table, the coefficient of friction is measured by a Haydon 14 type friction tester, the amount of friction is measured based on DIN test conditions, the oil resistance is 70 ° C using No. 3 oil based on JIS K 6301, The swelling amount (ΔV) of the rubber composition after 70 hours was measured.
〔効果〕 この発明は以上より明らかなように摩擦係数が一部露
出した短繊維により給紙ローラより低く、かつ、紙同志
との摩擦抵抗より大きい表面摩擦抵抗を有するため、重
積紙に対しては、給紙ローラと接する上層紙のみをすべ
らせ、下層紙を紙同志間の摩擦係数よりも大きな摩擦抵
抗により送出されるのを抑え、かつ、単一紙となった場
合は適度なすべりを付与してスムースな紙送りを可能と
するのである。 [Effect] As apparent from the above, the present invention has a friction coefficient lower than that of the feed roller due to partially exposed short fibers, and has a surface frictional resistance greater than the frictional resistance between papers. In other words, only the upper layer paper that is in contact with the paper feed roller is allowed to slide, the lower layer paper is prevented from being sent out due to a frictional resistance greater than the friction coefficient between the papers, and a moderate amount of To enable smooth paper feeding.
また、短繊維の添加によりゴム板の耐摩擦性も付与出
来、これらは短繊維の添加量により調整可能であるの
で、任意の用紙に対し容易に設計でき、さらに通常のゴ
ムを使用して成形可能であるので安価に製造出来るなど
の効果を有する。In addition, the addition of short fibers can also impart the friction resistance of the rubber plate, which can be adjusted by the amount of short fibers added, so that it can be easily designed for any paper and molded using ordinary rubber. Since it is possible, it has an effect that it can be manufactured at low cost.
【図面の簡単な説明】 第1図はこの発明に係る紙送り重送防止用ゴム部材の説
明図、第2図は実施例の要部拡大断面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view of a paper feed / double feed prevention rubber member according to the present invention, and FIG. 2 is an enlarged sectional view of a main part of the embodiment.
Claims (1)
物に、アスペクト比10以上の短繊維が、前記ゴム成分10
0部に対し2〜50部混合され、該短繊維の一部を表面に
露出させて板状又はローラ状に成形して成ることを特徴
とする紙送り重送防止用ゴム部材。(1) A short fiber having an aspect ratio of 10 or more is added to a composition containing natural rubber or synthetic rubber as a main component.
A rubber member for preventing paper feed and double feed, wherein 2 to 50 parts are mixed with respect to 0 part, and a part of the short fiber is exposed to the surface and formed into a plate shape or a roller shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28734888A JP2652562B2 (en) | 1988-11-14 | 1988-11-14 | Rubber member to prevent paper feed double feed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28734888A JP2652562B2 (en) | 1988-11-14 | 1988-11-14 | Rubber member to prevent paper feed double feed |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02138039A JPH02138039A (en) | 1990-05-28 |
JP2652562B2 true JP2652562B2 (en) | 1997-09-10 |
Family
ID=17716205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28734888A Expired - Lifetime JP2652562B2 (en) | 1988-11-14 | 1988-11-14 | Rubber member to prevent paper feed double feed |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2652562B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH075200B2 (en) * | 1990-12-20 | 1995-01-25 | 住友ゴム工業株式会社 | Rubber member for paper feeder |
JP2002322358A (en) * | 2001-04-25 | 2002-11-08 | Mitsuboshi Belting Ltd | Belt and rubber composition for belt |
JP2003002483A (en) * | 2001-06-25 | 2003-01-08 | Sumitomo Rubber Ind Ltd | Paper feed roller |
KR20030093893A (en) * | 2002-06-24 | 2003-12-11 | 손호수 | A apparatus for mixing of molding sand |
-
1988
- 1988-11-14 JP JP28734888A patent/JP2652562B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH02138039A (en) | 1990-05-28 |
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