JPS6357440A - Paper feed roller - Google Patents
Paper feed rollerInfo
- Publication number
- JPS6357440A JPS6357440A JP19675286A JP19675286A JPS6357440A JP S6357440 A JPS6357440 A JP S6357440A JP 19675286 A JP19675286 A JP 19675286A JP 19675286 A JP19675286 A JP 19675286A JP S6357440 A JPS6357440 A JP S6357440A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- paper feed
- feed roller
- core member
- paper
- 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
Links
- 230000002093 peripheral effect Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010068 moulding (rubber) Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の属する分野の説明）
本発明は、複写機、印刷機などにおいて、転写紙などの
シート材を多数重畳収納したカセットあるいはデツキ等
から、１枚毎シート材を複写プロセス工程へと搬送供給
する為の給紙装置、とくに、給紙ローラに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Description of the Field to which the Invention Pertains) The present invention provides a method for copying, printing, etc., in which sheet materials such as transfer paper are collected one by one from a cassette or deck containing a large number of sheet materials such as transfer paper. The present invention relates to a paper feeding device for conveying and supplying paper to a copying process, and particularly relates to a paper feeding roller.
第３図の様に、多数のシート材ＰｌあるいはＰ２を上面
が開放されたカセット４あるいは５内に収納し、該シー
トを下面から前記開放側に弾ｉＩ！的に偏倚させておき
、このカセットを複写機本体１などに装着したときに該
本体側に配した給紙ローラ２あるいは３をカセット内最
上面のシート材に圧接するとともに、前記ローラを駆動
してシート材を１枚ずつ本体側に供給する様に構成した
給紙装置は従来からきわめて普通に用いられている。As shown in FIG. 3, a large number of sheet materials Pl or P2 are stored in a cassette 4 or 5 whose upper surface is open, and the sheets are exposed from the lower surface to the open side. When this cassette is installed in the copying machine main body 1, etc., the paper feed roller 2 or 3 disposed on the main body side is pressed against the sheet material on the uppermost surface of the cassette, and the roller is driven. Paper feeding devices configured to feed sheet materials one by one to the main body have been very commonly used in the past.
ここで、シート材を搬送する為の搬送力は、給紙ローラ
を構成している弾性ゴム部とシー、ト材との摩擦力であ
り、この摩擦力はカセット内に設けられた、シート束を
下方から押し上げているバネの押し上げ力により発生す
る。この押し上げ力はカセット内に収納されたシート枚
数や紙種などによって多少変動するが、その変動域内に
おいても安定した紙送りが得られる様にあらかじめバネ
が設計されているので、実際の給紙トラブルにおいても
、この押し上げバネが原因になっているものはほとんど
ない。それに反して、給紙ローラ側の原因は多く、ゴム
部摩擦係数の低下によるスリップ（紫外線劣化やブルー
ミングによるものも含む）、ゴム部への紙粉、トナー等
の外部異物付着によるスリップや画像汚しなど複雑な問
題が存在する。とくに、紙送り枚数が進み、給紙ローラ
ゴム部が削れた頃、頻発してよく発生し易い。したがっ
て、実際の装置においては、給紙ローラは定期サービス
マンチ部品として扱われ、本体カウンタ−２０万〜３０
万枚程度で交換（給紙ローラ全部を又はゴムローラ部の
みを交換する。）する様に決めている。それ以前に１前
記トラブルを起こすものには、その時々でサービスマン
等がアルコール等で清掃して、ゴム・ローラ部の汚れを
除去する事もある。Here, the conveying force for conveying the sheet material is the frictional force between the elastic rubber part that constitutes the paper feed roller and the sheet and sheet materials, and this frictional force is This is caused by the pushing force of the spring pushing up from below. This push-up force varies somewhat depending on the number of sheets stored in the cassette, the type of paper, etc., but the spring is designed in advance to ensure stable paper feeding even within this range of variation, so it is possible to avoid actual paper feeding problems. Even in this case, there are almost no cases where this push-up spring is the cause. On the other hand, there are many causes on the paper feed roller side, such as slips due to a decrease in the friction coefficient of the rubber part (including those caused by UV degradation and blooming), slips and image stains due to external foreign matter such as paper dust and toner adhering to the rubber part. There are complex issues such as In particular, this problem tends to occur frequently when the number of sheets fed increases and the rubber portion of the paper feed roller wears off. Therefore, in the actual device, the paper feed roller is treated as a regularly serviced part, and the main body counter is 200,000 to 30,000.
It has been decided that the paper feed roller should be replaced after approximately 10,000 sheets (the entire paper feed roller or only the rubber roller portion should be replaced). Before that, if the problem occurs as mentioned above, a service person or the like may clean it with alcohol or the like from time to time to remove dirt from the rubber roller part.
しかしながら、高速複写機などにおいては、本体寿命２
００万枚に対して、２０万〜３０万枚で給紙ローラをす
べて新品と交換すると約７回〜１０回も交換時期があり
、第３図の様に、上、下２段カセット可能タイプの場合
、１回の交換で２段×６個／段＝１２個もの給紙ローラ
を交換する事になり、機械の一生では最低でも、７回×
１２個／回＝８４個の給紙ローラを使用する事となる。However, in high-speed copying machines, etc., the main body lifespan is 2
If you replace all the paper feed rollers with new ones after 200,000 to 300,000 sheets per million sheets, you will need to replace them approximately 7 to 10 times. In this case, 2 stages x 6 rollers/stage = 12 paper feed rollers would be replaced in one exchange, and at least 7 times over the life of the machine.
12 rollers/time=84 paper feed rollers are used.
もちろん、段数が多くなればそれだけざらにローラ個数
が増加する事は言うまでもない。したがって、極めて資
源のムダと不経済であるかがわかる。Of course, it goes without saying that as the number of stages increases, the number of rollers increases accordingly. Therefore, it can be seen that it is extremely wasteful of resources and uneconomical.
本発明は前記従来例の欠点を排除し、高速複写機におい
ては省資源で経済的な、又低速複写機においてはｍ械寿
命のまっとうする給紙ローラを提供する事を目的とする
。SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the drawbacks of the conventional examples and to provide a paper feed roller that is resource-saving and economical for high-speed copying machines, and that has a long machine life for low-speed copying machines.
第１図及び第２図に本発明の給紙ローラの実施例を示す
。第２図において、本発明給紙ローラは両側フランジ付
芯部材９と弾性ゴム状ローラ１０より成り、ゴム状ロー
ラ１０は内周径を芯部材９のフランジ部９ａ、９ｂでな
い外周径より若干小さくしておき、フランジ部を乗り越
えて芯部材９に第２図の様にはめ込み、装着させる。ゴ
ム状ローラ１０と芯部材９とはゴム部と芯部材との接触
部において、ゴム弾性力により、軽圧入状態が生じてい
るので、シート材へ搬送力を伝える時でも、接触部での
スリップは起こらず、一体に結合して回転する。又、芯
部材９は、回転伝達軸６から芯部材９のピン溝９Ｃ内に
挿入されたピン８を介して、回転力を受け、シート材へ
搬送力を伝える。ゴム状ローラ１０の軸方向ズレは、芯
部材９の両フランジ９ａ、９ｂによって規制される。1 and 2 show an embodiment of the paper feed roller of the present invention. In FIG. 2, the paper feed roller of the present invention is composed of a core member 9 with flanges on both sides and an elastic rubber roller 10, and the inner diameter of the rubber roller 10 is slightly smaller than the outer diameter of the core member 9 that does not have flanges 9a and 9b. Then, climb over the flange portion and fit into the core member 9 as shown in FIG. 2 to attach it. The rubber roller 10 and the core member 9 are lightly press-fitted due to the rubber elastic force at the contact area between the rubber part and the core member, so even when conveying force is transmitted to the sheet material, slippage at the contact area is prevented. does not occur, instead they combine and rotate as one. Further, the core member 9 receives rotational force from the rotation transmission shaft 6 via the pin 8 inserted into the pin groove 9C of the core member 9, and transmits the conveying force to the sheet material. The axial displacement of the rubber roller 10 is regulated by both flanges 9a and 9b of the core member 9.
又、給紙ローラ自身の軸方向規制は、前記ピン８と、対
向面の軸６に固定される止メ金具７によフて成されるの
で、シート材先端付近のあ、らかしめ決まった位置にお
いて、給紙ローラが本体に設定出来る。さらに、該ゴム
状ローラｌＯは第１図に示す様に外周面１１にローレッ
ト状溝１３を有しており（詳細は第４図）、この溝内に
シート材から紙粉やタルク、異物（トナー、はこり等）
をローラ回転時、移入して、直接の外周面１１に異物が
付く事を防止する。Further, since the axial direction of the paper feed roller itself is controlled by the pin 8 and the stopper 7 fixed to the shaft 6 on the opposing surface, the axial direction of the sheet material near the tip of the sheet material is fixed. In this position, the paper feed roller can be set on the main body. Furthermore, as shown in FIG. 1, the rubber roller IO has a knurled groove 13 on the outer circumferential surface 11 (details are shown in FIG. 4), and inside this groove, paper dust, talc, foreign matter from the sheet material, etc. toner, chips, etc.)
When the roller rotates, it is transferred and foreign matter is prevented from attaching directly to the outer circumferential surface 11.
同様に、内周面１２にも同型のローレット状溝１４が形
成されているが、内周にある為、第４図で明らかな逆三
角溝は見られず三角形の二辺が接触した状態を保ってい
る。この内周面１２に外周面１１と同様なローレット状
パターンを形成する事によって、紙送り耐久枚数２０万
〜３０３０万に、ゴムローラ１０の内外周面を引っく
り返して、内周面を外周面とする事で、新品ローラ交換
と同等な給紙可能面を給紙ローラ上に形成出来る。この
時、今まで使用され削れた表面を持つ外周面は内周面に
置き変わり、芯部材９と前記の様なはめ合いが成される
。しかし、前記のはめ合いのはめ合い力よりはローラ表
面が削れた分だけ、その場合の方が小さくなっているが
、この量を見込んで芯部材９の外周を決めておけば、な
んらゆるみやすべりが生じないではめ合いがなされる。Similarly, a knurled groove 14 of the same type is formed on the inner peripheral surface 12, but since it is located on the inner periphery, the inverted triangular groove that is obvious in FIG. I keep it. By forming the same knurling pattern on the inner circumferential surface 12 as on the outer circumferential surface 11, the inner and outer circumferential surfaces of the rubber roller 10 are turned over and the inner circumferential surface becomes the outer circumferential surface in order to increase the number of paper feeds from 200,000 to 30,300,000 sheets. As a result, it is possible to form a paper feeding surface on the paper feeding roller that is equivalent to replacing a new roller. At this time, the outer circumferential surface that has been used until now and has a shaved surface is replaced by the inner circumferential surface, and the fit with the core member 9 as described above is achieved. However, the fitting force in this case is smaller than the above-mentioned fitting force due to the scraping of the roller surface, but if the outer circumference of the core member 9 is determined with this amount in mind, there will be no loosening. The fit is achieved without slipping.
又、この場合には接着手段も使えるので、前記同様、確
実な結合を期待出来る。さらに、本発明のゴム状ローラ
成形条件として、給紙可能面（外周面）は第２図面面で
わかる様に、平面状態である事が望ましい（多少の凹凸
は問題ない）ので、成形加工時、内周面に相当する部分
は該周面に引っくり返った場合に平面状態になる様にあ
らかじめゴム成形二を増加させておく必要がある。つま
リ、第１図の内周面の様に、断面方向でゆるやかに凸形
状を成す様に加工される必要がある。この凸形状は、芯
部材９とのはめ合いに関して、悪影晋を与える程大きく
ないので心配はいらない。上記説明においては、ローレ
ット状溝パターンを有する、ゴムローラについて述べた
が、本発明の応用はローレットなしゴムローラにおいて
も適応出来る。又、ローラ形状以外にもベルト状のもの
にみ適応出来る。Furthermore, in this case, since adhesive means can be used, reliable bonding can be expected as in the above case. Furthermore, as a condition for molding the rubber-like roller of the present invention, as shown in the second drawing, it is desirable that the paper feeding surface (outer peripheral surface) be flat (some unevenness is not a problem), so during the molding process, It is necessary to increase the rubber molding in advance so that the portion corresponding to the inner circumferential surface becomes flat when turned over to the circumferential surface. In other words, it needs to be processed so that it forms a gently convex shape in the cross-sectional direction, like the inner peripheral surface in FIG. There is no need to worry about this convex shape, as it is not so large as to have a negative impact on the fit with the core member 9. In the above description, a rubber roller having a knurled groove pattern has been described, but the present invention can also be applied to a non-knurled rubber roller. In addition to the roller shape, it can also be applied to belt shapes.
以上説明したように、本発明の給紙ローラの弾性ゴム状
ローラの内外周面を選択的に引っくり返すことによって
、新しい給紙可能面を給紙ローラ上に形成出来るという
簡単な方法によって、高速複写機における省資源化およ
び経済性の向上を実現出来、低連複写機における機械寿
命をまっとう１−る給紙ローラ（従来のものに比べて２
倍耐久枚数が伸びるローラ）も可能となった。As explained above, by selectively turning over the inner and outer peripheral surfaces of the elastic rubber roller of the paper feed roller of the present invention, a new paper feedable surface can be formed on the paper feed roller in a simple manner. It is possible to save resources and improve economic efficiency in high-speed copying machines, and to extend the machine life of low-speed copying machines.
It is now possible to create rollers with twice the durability.
第１図は本発明給紙ローラの弾性ゴム状ローラ、 第２図は本発明給紙ローラの断面図、 第３図は複写機械の概略図、 第４図は本発明のゴム状ローラのローレット溝。 FIG. 1 shows an elastic rubber roller of the paper feed roller of the present invention. FIG. 2 is a sectional view of the paper feed roller of the present invention; Figure 3 is a schematic diagram of a copying machine; FIG. 4 shows the knurling grooves of the rubber roller of the present invention.
Claims (1)
成とする給紙ローラにおいて、 該弾性ゴム状ローラ１０の外周面１１と内周面１２とを
選択的に給紙可能面として使用出来る様にした事を特徴
とする給紙ローラ。[Scope of Claims] In a paper feed roller that is integrally formed by lightly press-fitting an elastic rubber roller 10 and a core member 9, the outer circumferential surface 11 and the inner circumferential surface 12 of the elastic rubber roller 10 are selectively formed. A paper feed roller characterized in that it can be used as a paper feed surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19675286A JPS6357440A (en) | 1986-08-22 | 1986-08-22 | Paper feed roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19675286A JPS6357440A (en) | 1986-08-22 | 1986-08-22 | Paper feed roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6357440A true JPS6357440A (en) | 1988-03-12 |
Family
ID=16363023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19675286A Pending JPS6357440A (en) | 1986-08-22 | 1986-08-22 | Paper feed roller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6357440A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5022638A (en) * | 1989-04-24 | 1991-06-11 | Pitney Bowes Inc. | Envelope transporting aligning and stacking module |
| US7963224B2 (en) * | 2007-03-23 | 2011-06-21 | Hewlett-Packard Development Company, L.P. | Drum having a polymer layer with channels on a metal cylinder |
-
1986
- 1986-08-22 JP JP19675286A patent/JPS6357440A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5022638A (en) * | 1989-04-24 | 1991-06-11 | Pitney Bowes Inc. | Envelope transporting aligning and stacking module |
| US7963224B2 (en) * | 2007-03-23 | 2011-06-21 | Hewlett-Packard Development Company, L.P. | Drum having a polymer layer with channels on a metal cylinder |
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