JPH0812122A - Sheet material feeding member - Google Patents
Sheet material feeding memberInfo
- Publication number
- JPH0812122A JPH0812122A JP17208194A JP17208194A JPH0812122A JP H0812122 A JPH0812122 A JP H0812122A JP 17208194 A JP17208194 A JP 17208194A JP 17208194 A JP17208194 A JP 17208194A JP H0812122 A JPH0812122 A JP H0812122A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- sheet material
- diameter portion
- holding member
- inner diameter
- 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.)
- Withdrawn
Links
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Handling Of Sheets (AREA)
- Handling Of Cut Paper (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、シート材を供給・搬送
するためのシート材給送装置に係り、詳しくはシート材
としての記録紙を画像形成装置本体内にて供給・搬送す
るのに用いられるシート材給送部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material feeding device for feeding and carrying a sheet material, and more specifically, for feeding and carrying a recording sheet as a sheet material in a main body of an image forming apparatus. The present invention relates to a sheet material feeding member used.
【０００２】[0002]
【従来の技術】従来のシート材給送装置における給送部
材（以下ローラユニットと呼ぶ）としては、例えば図２
に示すようなものがある。2. Description of the Related Art As a feeding member (hereinafter referred to as a roller unit) in a conventional sheet feeding device, for example, FIG.
There is something like that shown in
【０００３】図２において、１’はローラ、２’は保持
部材、３ｂが接着部材であり、これらを総じてローラユ
ニット２２として画像形成装置本体内に取り付けられ
る。In FIG. 2, 1'is a roller, 2'is a holding member, and 3b is an adhesive member, and these are collectively installed as a roller unit 22 in the main body of the image forming apparatus.
【０００４】この構成においてローラ１’がシート材を
給送する際、保持部材２’とローラ１’の間に働く力Δ
ｆはシート材とローラ１’の摩擦によって生じる力を
Ｆ、ローラ１’の外径をｘ、ローラ１’の内径をｙとす
ると、Δｆ＝ＦΔｔ・ｘ／ｙとなる。In this structure, when the roller 1'feeds the sheet material, the force Δ acting between the holding member 2'and the roller 1 '.
f is Δf = FΔt · x / y, where F is the force generated by the friction between the sheet material and the roller 1 ′, x is the outer diameter of the roller 1 ′, and y is the inner diameter of the roller 1 ′.
【０００５】ローラ１’と保持部材２’間の静止摩擦係
数をμ、ローラ１’が保持部材２’に与える圧力をＰと
すると、関係式Δｆ≦μＰΔｔが満たされるとき接着部
材３ｂが存在しなくてもローラ１’と保持部材２’との
間に滑りは生じないが、関係式Δｆ＞μＰΔｔとなる場
合には、接着部材３ｂが存在しなければ、ローラ１’と
保持部材２’との間に滑りが生じてしまう。そのためロ
ーラ１’と保持部材２’との接触面は、接着部材３ｂに
より接着されている。When the coefficient of static friction between the roller 1'and the holding member 2'is μ and the pressure applied by the roller 1'to the holding member 2'is P, the adhesive member 3b exists when the relational expression Δf≤μPΔt is satisfied. Even if it does not exist, no slippage occurs between the roller 1'and the holding member 2 ', but if the relational expression Δf> μPΔt is satisfied, if the adhesive member 3b does not exist, the roller 1'and the holding member 2' There will be slippage between the two. Therefore, the contact surface between the roller 1'and the holding member 2'is adhered by the adhesive member 3b.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記従
来例では、ローラ摩耗時、ローラと保持部材が、接着剤
あるいは両面テープ等接着部材によって接着されていた
ため、ローラユニット全体での交換となり、摩耗あるい
は変形のない保持部材が、交換されざるを得ない状況に
なり、コスト的な不利益をこうむることになるという欠
点があった。However, in the above-mentioned conventional example, when the roller is worn, the roller and the holding member are adhered by an adhesive or an adhesive member such as a double-sided tape. There is a drawback in that the holding member that is not deformed has to be replaced, resulting in a cost disadvantage.
【０００７】また、ローラと保持部材の組み立てに接着
剤を必要とし、組み立て作業性が悪かった。Further, an adhesive is required for assembling the roller and the holding member, and the assembling workability is poor.
【０００８】本発明は上記した従来技術の問題点を解決
するためになされたもので、その主目的とするところ
は、ローラユニットのローラだけを容易に交換でき、摩
耗あるいは変形のない保持部材を再利用可能とし得るシ
ート材給送部材を提供することにある。The present invention has been made in order to solve the above-mentioned problems of the prior art. The main purpose of the present invention is to make it possible to easily replace only the rollers of the roller unit and to provide a holding member that is not worn or deformed. It is to provide a sheet material feeding member that can be reused.
【０００９】[0009]
【課題を解決するための手段】外径部をシート材に当接
させてシート材を給送するローラと、ローラの回動軸と
してローラの内径部に挿嵌されるローラ保持部材からな
るシート材給送部材において、ローラの内径部に外径部
より高い摩擦係数をもつ材質を用いてローラのラジアル
方向を複数層とした。A sheet including a roller for feeding a sheet material with an outer diameter portion abutting on a sheet material, and a roller holding member inserted into an inner diameter portion of the roller as a rotation shaft of the roller. In the material feeding member, a material having a friction coefficient higher than that of the outer diameter portion is used for the inner diameter portion of the roller, and a plurality of layers are formed in the radial direction of the roller.
【００１０】また、ローラ外径部をスポンジ、ローラ内
径部をゴム材、あるいはローラ外径部をプラスチック成
形部品、ローラ内径部をゴム材、あるいはローラ外径部
を金属部品、ローラ内径部をゴム材、あるいはローラ外
径部をゴム状弾性部材、ローラ内径部を接着部材として
もよい。Further, the roller outer diameter portion is sponge, the roller inner diameter portion is rubber material, or the roller outer diameter portion is plastic molded part, the roller inner diameter portion is rubber material, or the roller outer diameter portion is metal part, and the roller inner diameter portion is rubber. The material or the roller outer diameter portion may be a rubber-like elastic member, and the roller inner diameter portion may be an adhesive member.
【００１１】もしくは、ローラ保持部材のローラの内径
部に当接する表面部分をローラ外径部より高い摩擦係数
のものとしてもよい。Alternatively, the surface portion of the roller holding member that abuts the inner diameter portion of the roller may have a higher friction coefficient than the outer diameter portion of the roller.
【００１２】[0012]
【作用】ローラの内径部に外径部より高い摩擦係数をも
つ材質を用いてローラのラジアル方向を複数層としたこ
とで、ローラ内面がローラ外面よりも高い摩擦係数を持
つことになり、ローラ内面とローラ内面に挿嵌されるロ
ーラ保持部材とが、相対的に滑りにくくなる。また、ロ
ーラ保持部材のローラの内径部に当接する表面部分をロ
ーラ外径部より高い摩擦係数のものとしてもローラ内面
とローラ内面に挿嵌されるローラ保持部材とが、相対的
に滑りにくくなる。The roller inner surface has a higher friction coefficient than the roller outer surface by using a material having a higher friction coefficient for the inner diameter portion of the roller than the outer diameter portion so that the roller has a plurality of radial directions. The inner surface and the roller holding member inserted into the inner surface of the roller become relatively slippery. Further, even if the surface portion of the roller holding member that abuts the inner diameter portion of the roller has a friction coefficient higher than that of the roller outer diameter portion, the inner surface of the roller and the roller holding member inserted into the inner surface of the roller become relatively slippery. .
【００１３】[0013]
（第１実施例）本発明の第１実施例を図１に示す。図１
において１はシート材を給送するローラ、２はローラの
回動軸としてローラの内径部に挿嵌されるローラ保持部
材、３ａはローラ外周よりも高い摩擦係数をもつ材質よ
り成る層状のグリップ層である。(First Embodiment) A first embodiment of the present invention is shown in FIG. FIG.
In FIG. 1, 1 is a roller for feeding the sheet material, 2 is a roller holding member which is fitted into the inner diameter portion of the roller as a rotation axis of the roller, and 3a is a layered grip layer made of a material having a higher friction coefficient than the outer circumference of the roller. Is.
【００１４】以上の構成をもつシート材給送部材として
のローラユニット１１によってシート材を給送すると
き、あらかじめグリップ層３ａの静摩擦係数μ0 を、ロ
ーラ１とシート材の摩擦によって生じる力をＦ0 、ロー
ラ１外径をｘ0 、ローラ１内径をｙ0 、ローラ１がロー
ラ保持部材２に与える圧力をＰ0 としたとき、Ｆ0 Δｔ
ｘ0 ／ｙ0 Ｐ0 Δｔ≦μ0 を満たすように設定すると、
シート材とローラ１外面間に滑りを生じることなく、か
つローラ１内面とローラ保持部材２間に滑りを生じるこ
となくシート材の供給を可能とする。When the sheet material is fed by the roller unit 11 as the sheet material feeding member having the above construction, the static friction coefficient μ 0 of the grip layer 3a is set in advance by the force F generated by the friction between the roller 1 and the sheet material. 0, the roller 1 outside diameter x 0, the roller 1 inner diameter y 0, when the pressure roller 1 has on the roller supporting member 2 is set to P 0, F 0 Delta] t
When set so as to satisfy x 0 / y 0 P 0 Δt ≦ μ 0 ,
It is possible to supply the sheet material without causing slippage between the sheet material and the outer surface of the roller 1 and without causing slippage between the inner surface of the roller 1 and the roller holding member 2.
【００１５】（第２実施例）図１において、ローラ１を
スポンジ，グリップ層３ａをゴム材としたローラユニッ
ト１１。(Second Embodiment) In FIG. 1, a roller unit 11 in which the roller 1 is a sponge and the grip layer 3a is a rubber material.
【００１６】（第３実施例）図１において、ローラ１を
モールド，グリップ層３ａをゴム材としたローラユニッ
ト１１。(Third Embodiment) In FIG. 1, a roller unit 11 in which the roller 1 is a mold and the grip layer 3a is a rubber material.
【００１７】（第４実施例）図１において、ローラ１を
金属，グリップ層３ａをゴム材としたローラユニット。(Fourth Embodiment) In FIG. 1, a roller unit in which the roller 1 is made of metal and the grip layer 3a is made of rubber.
【００１８】（第５実施例）図１において、ローラ１を
ゴム材，グリップ層３ａを粘着部材としたローラユニッ
ト。（第６実施例）図１において、ローラ保持部材２の
ローラ１の内径部に当接する表面部分２ａをローラ１外
径部より高い摩擦係数のものとすることにより、シート
材とローラ１外面間に滑りを生じることなく、かつロー
ラ１内面とローラ保持部材２間に滑りを生じることなく
シート材の供給を可能とする。(Fifth Embodiment) In FIG. 1, a roller unit in which the roller 1 is a rubber material and the grip layer 3a is an adhesive member. (Sixth Embodiment) In FIG. 1, the surface portion 2a of the roller holding member 2 that abuts on the inner diameter portion of the roller 1 has a higher friction coefficient than the outer diameter portion of the roller 1. It is possible to feed the sheet material without slipping on the inner surface of the roller 1 and the roller holding member 2.
【００１９】[0019]
【発明の効果】本発明は以上の構成および作用を有する
もので、ローラの内径部に外径部より高い摩擦係数をも
つ材質を用いてローラのラジアル方向を複数層とする
か、もしくはローラ保持部材２のローラ１の内径部に当
接する表面部分２ａをローラ１外径部より高い摩擦係数
のものとすることにより、シート材とローラ外面間に滑
りを生じることなく、かつローラ内面とローラ保持部材
間に滑りを生じることなくシート材の供給を可能とする
と同時に、ローラとローラ保持部材が非接着で挿換され
ているため、ローラ摩耗時、ローラ単体での交換が可能
であるため、交換に伴うコストの低減および作業性の向
上等を可能とする。The present invention has the above-described structure and action, and uses a material having a higher friction coefficient in the inner diameter portion of the roller than that of the outer diameter portion so that the radial direction of the roller has a plurality of layers or the roller is held. By making the surface portion 2a of the member 2 in contact with the inner diameter portion of the roller 1 have a friction coefficient higher than that of the outer diameter portion of the roller 1, slip does not occur between the sheet material and the outer surface of the roller, and the inner surface of the roller and the roller are held. The sheet material can be supplied without slipping between the members, and at the same time, the roller and the roller holding member are replaced by non-adhesion, so it is possible to replace the roller alone when the roller wears. It is possible to reduce costs and improve workability.
【図１】図１は本発明を実施したローラユニットの立体
断面図である。FIG. 1 is a three-dimensional cross-sectional view of a roller unit embodying the present invention.
【図２】図２は従来までの技術によるローラユニットの
立体断面図である。FIG. 2 is a three-dimensional sectional view of a roller unit according to a conventional technique.
１，１’ ローラ ２，２’ ローラ保持部材 ２ａ ローラ保持部材のローラ１の内径部に当接する表
面部分 ３ａ グリップ層 ３ｂ 接着部材 １１，２２ ローラユニット1, 1'Roller 2, 2'Roller holding member 2a Surface portion of the roller holding member that abuts the inner diameter of the roller 1 3a Grip layer 3b Adhesive member 11, 22 Roller unit
Claims (6)
を給送するローラと、ローラの回動軸としてローラの内
径部に挿嵌されるローラ保持部材からなるシート材給送
部材において、 ローラの内径部に外径部より高い摩擦係数をもつ材質を
用いてローラのラジアル方向を複数層としたことを特徴
とするシート材給送部材。1. A sheet material feeding member comprising a roller for feeding the sheet material by bringing an outer diameter portion into contact with the sheet material, and a roller holding member fitted into an inner diameter portion of the roller as a rotation shaft of the roller. In the sheet material feeding member, the inner diameter portion of the roller is made of a material having a friction coefficient higher than that of the outer diameter portion, and the roller has a plurality of radial directions.
をゴム材とした請求項１に記載のシート材給送部材。2. The sheet material feeding member according to claim 1, wherein the roller outer diameter portion is made of sponge, and the roller inner diameter portion is made of rubber material.
ローラ内径部をゴム材とした請求項１に記載のシート材
給送部材。3. The roller outer diameter portion is a plastic molded part,
The sheet material feeding member according to claim 1, wherein the roller inner diameter portion is made of a rubber material.
をゴム材とした請求項１に記載のシート材給送部材。4. The sheet material feeding member according to claim 1, wherein the roller outer diameter portion is a metal part and the roller inner diameter portion is a rubber material.
内径部を接着部材とした請求項１に記載のシート材給送
部材。5. The sheet material feeding member according to claim 1, wherein the roller outer diameter portion is a rubber-like elastic member and the roller inner diameter portion is an adhesive member.
を給送するローラと、ローラの回動軸としてローラの内
径部に挿嵌されるローラ保持部材からなるシート材給送
部材において、 ローラ保持部材のローラの内径部に当接する表面部分を
ローラ外径部より高い摩擦係数のものとしたシート材給
送部材。6. A sheet material feeding member comprising a roller for feeding the sheet material by bringing an outer diameter portion into contact with the sheet material, and a roller holding member fitted into an inner diameter portion of the roller as a rotation shaft of the roller. In the sheet material feeding member, the surface portion of the roller holding member that comes into contact with the inner diameter portion of the roller has a higher friction coefficient than the outer diameter portion of the roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17208194A JPH0812122A (en) | 1994-06-30 | 1994-06-30 | Sheet material feeding member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17208194A JPH0812122A (en) | 1994-06-30 | 1994-06-30 | Sheet material feeding member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0812122A true JPH0812122A (en) | 1996-01-16 |
Family
ID=15935190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17208194A Withdrawn JPH0812122A (en) | 1994-06-30 | 1994-06-30 | Sheet material feeding member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0812122A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011030543A1 (en) * | 2009-09-11 | 2011-03-17 | 株式会社ミマキエンジニアリング | Printer device and roller assembly |
-
1994
- 1994-06-30 JP JP17208194A patent/JPH0812122A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011030543A1 (en) * | 2009-09-11 | 2011-03-17 | 株式会社ミマキエンジニアリング | Printer device and roller assembly |
| JP2011057405A (en) * | 2009-09-11 | 2011-03-24 | Mimaki Engineering Co Ltd | Printer device and roller assembly |
| CN102482041A (en) * | 2009-09-11 | 2012-05-30 | 株式会社御牧工程 | Printer device and roller assembly |
| KR101275720B1 (en) * | 2009-09-11 | 2013-06-17 | 가부시키가이샤 미마키 엔지니어링 | Printer Device and Roller Assembly |
| US8870364B2 (en) | 2009-09-11 | 2014-10-28 | Mimaki Engineering Co., Ltd. | Printer apparatus and roller assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20010904 |