JPH0289741A - Paper feeding device for office equipment - Google Patents
Paper feeding device for office equipmentInfo
- Publication number
- JPH0289741A JPH0289741A JP24334988A JP24334988A JPH0289741A JP H0289741 A JPH0289741 A JP H0289741A JP 24334988 A JP24334988 A JP 24334988A JP 24334988 A JP24334988 A JP 24334988A JP H0289741 A JPH0289741 A JP H0289741A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- roller
- pressing
- separation roller
- friction member
- 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
- 238000000926 separation method Methods 0.000 claims abstract description 47
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ファクシミリや複写機等の事務用機器の給紙
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a paper feeding device for office equipment such as facsimiles and copying machines.
従来の技術
従来、多数枚の用紙を一枚ずつに分離する事務用機器の
給紙装置は、用紙分離ローラとこの用紙分離ローラに圧
接される摩擦板とにより構成されているが、用紙の空送
りを防止するために、用紙分離ローラへの用紙の圧接が
確実になされるように給紙台と用紙分離ローラとの間に
押圧ばねを設けている。例えば、第４図に示すように、
給紙台１と用紙ストッパ２との間に用紙分離ローラ３を
配設し、前記用紙分離ローラ３の前記用紙ストッパ２に
近接した外周に先端を接触させて板ばねによる用紙押え
ばね４が設けられている。この用紙押えばね４の基端は
、シャーシ５に固定されている。BACKGROUND OF THE INVENTION Conventionally, paper feeding devices for office equipment that separate multiple sheets of paper one by one are composed of a paper separation roller and a friction plate that is pressed against the paper separation roller. In order to prevent the paper from being fed, a pressure spring is provided between the paper feed table and the paper separation roller to ensure that the paper comes into pressure contact with the paper separation roller. For example, as shown in Figure 4,
A paper separation roller 3 is disposed between the paper feed tray 1 and the paper stopper 2, and a paper pressing spring 4 is provided with a leaf spring with a tip thereof in contact with the outer periphery of the paper separation roller 3 close to the paper stopper 2. It is being The base end of this paper pressing spring 4 is fixed to the chassis 5.
発明が解決しようとする間層点
給紙台１から送り込まれた用紙は、その先端が用紙スト
ッパ２に当接するまで押し込まれる。この時、用紙押え
ばね４は撓んで、その用紙を用紙分離ローラ３の外周面
に押圧する。そして、用紙分離ローラ３の回転にしたが
って、用紙分離ローラ３に接触した用紙は送り出される
が、その用紙分離ローラ３に用紙を圧接する範囲は、用
紙の先端が当接する用紙ストッパ２のＡ点と用紙押えば
ね４の先端が用紙分離ローラ３に当接するＢ点との間で
ある。そのため、その範囲が狭いことから給紙台１上の
用紙が用紙分離ローラ３に接触しない状態が起こり易く
、これにより、用紙の空送りがなされることがあると云
う問題がある。The paper fed from the interlayer point paper feed tray 1 to be solved by the invention is pushed until its leading edge abuts the paper stopper 2. At this time, the paper pressing spring 4 bends and presses the paper against the outer peripheral surface of the paper separation roller 3. Then, as the paper separation roller 3 rotates, the paper that has come into contact with the paper separation roller 3 is sent out, but the range where the paper is pressed against the paper separation roller 3 is the point A of the paper stopper 2 where the leading edge of the paper comes into contact. This is between point B, where the tip of the paper pressing spring 4 comes into contact with the paper separation roller 3. Therefore, since the range is narrow, it is easy for the paper on the paper feed tray 1 to not come into contact with the paper separation roller 3, which causes a problem in that the paper may be fed inadvertently.
問題点を解決するための手段
駆動部に連結されて駆動される用紙分離ローラと、この
用紙分離ローラの外周の一部に沿って湾曲した湾曲部を
備えた弾性のある押え部材と、この押え部材に保持され
て前記湾曲部の位置で前記用紙分離ローラの外周に圧接
した摩擦部材と、前記用紙分離ローラに弾発的に接触す
るとともに回転自在に保持された押圧ローラとを設ける
。Means for Solving the Problems A paper separation roller connected to and driven by a drive unit, an elastic presser member having a curved portion curved along a part of the outer periphery of the paper separation roller, and this presser. A friction member held by a member and pressed against the outer periphery of the paper separation roller at the position of the curved portion, and a pressure roller elastically contacted with the paper separation roller and rotatably held.
作用
用紙分離口−ラと摩擦部材とによる用紙分離を行なう前
に、用紙分離ローラに弾発的に接触する抑圧ローラによ
り、用紙の確実な繰り込みを行なうことができ、しかも
、その用紙を用紙分離ローラに圧接させて用紙の空送り
を防止することができ、用紙分離ローラと押圧ローラと
の間に二枚以上の用紙が入り込んだ時には、押圧ローラ
は単に圧接力を与えるのみで回転しないため、用紙分離
ローラに接触している一枚目の用紙のみが送り力を受け
、これにより、用紙の分離を確実に行なうことができ、
それに連なる摩擦部材の位置には、ある程度その分離が
進行した状態で用紙が送り込まれるので、摩擦部材によ
る用紙の分離をより一層確実に行なうことができるよう
に構成したものである。Working Paper Separation Port - Before paper separation is performed by the roller and the friction member, the paper can be reliably fed in by the suppression roller that contacts the paper separation roller elastically, and the paper can be separated. It is possible to prevent blank feeding of paper by pressing the roller against it, and when two or more sheets of paper enter between the paper separation roller and the pressure roller, the pressure roller simply applies pressure and does not rotate. Only the first sheet of paper that is in contact with the paper separation roller receives the feeding force, which allows the paper to be separated reliably.
Since the paper is fed into the position of the friction member connected to the friction member in a state where separation has progressed to some extent, the structure is such that the paper can be separated more reliably by the friction member.
実施例 本発明の一実施例を図面に基づいて説明する。Example An embodiment of the present invention will be described based on the drawings.
まず、多数枚重ねられた用紙１１を保持する給紙台１２
が設けられ、この給紙台１２の先端部には、図示しない
駆動部により駆動される用紙分離ローラ１３が水平な軸
心をもって回動自在に設けられている。First, a paper feed table 12 that holds a large number of stacked sheets of paper 11
A paper separating roller 13 driven by a drive section (not shown) is rotatably provided at the tip of the paper feed table 12 about a horizontal axis.
また、支軸１４に回動自在に取付けられたホルダ１５が
設けられている。このホルダ１５は平坦面１６とこの平
坦面１６の両側から立ち上がっている相対向する側壁１
７とにより形成されている。Further, a holder 15 is provided which is rotatably attached to the support shaft 14. This holder 15 has a flat surface 16 and opposing side walls 1 rising from both sides of this flat surface 16.
7.
前記平坦面１６の前部中央に形成された打ち出し部１８
と固定部１９との間には、圧縮ばね２０が取付けられて
前記ホルダ１５は下向き（第１図においては反時計方向
）に付勢されている。そして、前記側壁１７には、前記
支軸１４が嵌合する軸孔２１が形成されているとともに
その側壁の下方先端には抑圧軸２２が固定されている。A embossed portion 18 formed at the center of the front portion of the flat surface 16
A compression spring 20 is attached between the holder 15 and the fixing portion 19 to bias the holder 15 downward (counterclockwise in FIG. 1). A shaft hole 21 into which the support shaft 14 fits is formed in the side wall 17, and a suppressing shaft 22 is fixed to the lower tip of the side wall.
ついで、前記ホルダ１５の前記平坦面１６の下面には、
前記側壁１７の間隔よりも狭い幅の鋼板等による薄板状
の押え部材２３が固定されている。Next, on the lower surface of the flat surface 16 of the holder 15,
A thin plate-shaped holding member 23 made of a steel plate or the like having a width narrower than the interval between the side walls 17 is fixed.
この押え部材２３には前記用紙分離ローラ１３の外周の
曲率に合わせて湾曲した湾曲部２４が形成され、この湾
曲部２４の内面にはゴム等の弾性のある摩擦部材２５が
接着等により固定されている。This pressing member 23 is formed with a curved portion 24 that is curved to match the curvature of the outer circumference of the paper separation roller 13, and an elastic friction member 25 made of rubber or the like is fixed to the inner surface of this curved portion 24 by adhesive or the like. ing.
また、前記押え部材２３の上面には、前記抑圧軸２２が
接合されている。Further, the suppressing shaft 22 is joined to the upper surface of the pressing member 23.
つぎに、前記押圧軸２２の両側の端部付近には、前記ホ
ルダ１５の側壁１７の外側に位置させて抑圧ローラ２６
が取付けられている。この抑圧ローラ２６の外周面は、
ローレット状に凹凸がつけられ、前記押圧軸２２に嵌り
込む軸孔２７は大きな遊びを有するようにその内径が大
きく形成されている。なお、特に図示しないが前記押圧
ローラ２６の外側部には抜は止めリング等が設けられて
前記押圧軸２２からの脱落が防止されている。Next, near both ends of the pressing shaft 22, pressing rollers 26 are placed outside the side wall 17 of the holder 15.
is installed. The outer peripheral surface of this suppression roller 26 is
The shaft hole 27, which is knurled and fitted into the pressing shaft 22, has a large inner diameter so as to have a large play. Although not particularly shown in the drawings, a retaining ring or the like is provided on the outer side of the pressing roller 26 to prevent it from falling off the pressing shaft 22.
また、前記ホルダ１５の前記平坦面１６の下面に固定さ
れた前記押え部材２３の下面には、鋼板等のばね材料に
より形成された押圧板ばね２８の基部が固定されている
。そして、前方両側にはそれぞれ前方へ突出して前記押
圧ローラ２６の上面に接触してその押圧ローラ２６に下
向きの力を与えるばね片２９が一体的に形成されている
。Further, on the lower surface of the pressing member 23 fixed to the lower surface of the flat surface 16 of the holder 15, a base of a pressing plate spring 28 formed of a spring material such as a steel plate is fixed. Spring pieces 29 are integrally formed on both front sides, respectively, so as to project forward and come into contact with the upper surface of the pressure roller 26 to apply a downward force to the pressure roller 26.
このような構成において、ホルダ１５は圧縮ばね２０の
力を受けているため、押え部材２３の弾性力を介在させ
て摩擦部材２５を用紙分離ローラ１３に圧接している。In such a configuration, since the holder 15 receives the force of the compression spring 20, the friction member 25 is pressed against the paper separation roller 13 with the elastic force of the presser member 23 intervening.
この圧接状態は、押え部材２３の湾曲部２４の存在によ
り、摩擦部材２５の全体にわたって押圧力が有効に作用
しているものである。この時、押圧ローラ２６も押圧板
ばね２８のばね片２９により押圧力を受けて用紙分離ロ
ーラ１３に圧接され、かつ、用紙分離ローラ１３からの
回転力を受けて従動回転している。In this press-contact state, the pressing force is effectively acting on the entire friction member 25 due to the presence of the curved portion 24 of the pressing member 23. At this time, the pressing roller 26 is also pressed against the sheet separation roller 13 by the pressing force of the spring piece 29 of the pressing plate spring 28, and rotates as a result of receiving the rotational force from the sheet separation roller 13.
この状態で給紙台１２からの用紙１１が送り込まれると
、押圧ローラ２６がその用紙１１を引き込むように作用
する。そして、引き込まれた用紙−１１は、その押圧ロ
ーラ２６と用紙分離ローラ１３との間に挟持されて搬送
されるが、この状態において、挟持された用紙１１が一
枚の時には押圧ローラ２６が回転を継続し、後続の用紙
１１を引き込むように作用する。そして、第３図に示す
ように二枚の用紙１１が挟持された時には、押圧ローラ
２６は回転することなく送り込まれた用紙１１に押圧力
のみを与える。すなわち、用紙分離ローラ１３に接触し
ている用紙１１はその用紙分離ローラ１３との間の摩擦
力で搬送力を受けるが、その上の用紙１１が受ける搬送
力は下の用紙１１との間の摩擦力だけであるため、その
送りは停止状態か、或いは、きわめて低速である。その
ため、上の用紙１１に接触している押圧ローラ２６は、
回転することがない。しかしながら、用紙分離ローラ１
３への押圧力は与えるので、用紙１１の送り力を確実に
与えている。When the paper 11 is fed from the paper feed table 12 in this state, the pressing roller 26 acts to pull the paper 11. Then, the drawn paper 11 is conveyed while being sandwiched between the pressure roller 26 and the paper separation roller 13. In this state, when the paper 11 sandwiched is only one sheet, the pressure roller 26 rotates. continues, and acts to pull in the subsequent paper 11. Then, as shown in FIG. 3, when two sheets of paper 11 are sandwiched, the pressing roller 26 applies only a pressing force to the fed paper 11 without rotating. That is, the paper 11 that is in contact with the paper separation roller 13 receives a conveying force due to the frictional force between it and the paper separation roller 13, but the conveyance force that the paper 11 above it receives is due to the conveyance force between it and the paper 11 below. Since there is only frictional force, the feed is at a standstill or at a very low speed. Therefore, the pressure roller 26 that is in contact with the upper paper 11 is
It never rotates. However, the paper separation roller 1
Since the pressing force is applied to the paper 11, the feeding force for the paper 11 is reliably applied.
さらに、用紙１１の送りが進行すると、その用紙１１は
摩擦部材２５に接触し、万一、二枚送りされていたとし
てもその摩擦部材２５により確実に一枚に分離される。Further, as the paper 11 is fed, the paper 11 comes into contact with the friction member 25, and even if two sheets are fed, the friction member 25 ensures that the paper 11 is separated into one sheet.
しかも、その分離機能は摩擦部材２５の全長にわたって
存するので、摩擦部材２５が存する範囲を通り過ぎた用
紙１１は、ｉ枚ずつであり、二枚送りがなされることが
ない。Moreover, since the separation function exists over the entire length of the friction member 25, the number of sheets 11 that pass through the area where the friction member 25 exists is i sheets at a time, and two sheets are not fed.
なお、前記実施例においては、押圧軸２２をホルダ１５
に固定し、押圧ローラ２６と押圧軸２２との嵌合を遊び
のあるものとして説明したが、このような構造は押圧軸
２２が押圧部材２３を押圧するために採用されたもので
あり、実施に当っては、押圧部材２３の押圧を別部材に
より行ない、押圧ローラ２６を押圧軸２２に固定してそ
の押圧軸２２をホルダ１５に対して遊動自在としても良
いものである。In addition, in the embodiment, the pressing shaft 22 is attached to the holder 15.
Although it has been described that the fitting between the pressing roller 26 and the pressing shaft 22 has some play, such a structure is adopted so that the pressing shaft 22 presses the pressing member 23, and is not suitable for implementation. In this case, the pressing member 23 may be pressed by a separate member, the pressing roller 26 may be fixed to the pressing shaft 22, and the pressing shaft 22 may be freely movable with respect to the holder 15.
発明の効果
本発明は上述のように、駆動部に連結されて駆動される
用紙分離ローラと、この用紙分離ローラの外周の一部に
沿って湾曲した湾曲部を備えた弾性のある押え部材と、
この押え部材に保持されて前記湾曲部の位置で前記用紙
分離ローラの外周に圧接した摩擦部材と、前記用紙分離
ローラに弾発的に接触するとともに回転自在に保持され
た押圧ローラとを設けたので、用紙分離ローラと摩擦部
材とによる用紙分離を行なう前に、用紙分離ローラに弾
発的に接触する押圧ローラにより、用紙の確実な繰り込
みを行なうことができ、しかも、その用紙を用紙分離ロ
ーラに圧接させて用紙の空送りを防止することができ、
用紙分離ローラと押圧ローラとの間に二枚以上の用紙が
入り込んだ時には、押圧ローラは単に圧接力を与えるの
みで回転しないため、用紙分離ローラに接触している一
枚目の用紙のみが送り力を受け、これにより、用紙の分
離を確実に行なうことができ、それに連なる摩擦部材の
位置には、ある程度その分離が進行した状態で用紙が送
り込まれるので、摩擦部材による用紙の分離をより一層
確実に行なうことができると云う効果を有する。Effects of the Invention As described above, the present invention includes a paper separation roller that is connected to a drive unit and driven, and an elastic presser member that includes a curved portion that curves along a part of the outer periphery of the paper separation roller. ,
A friction member held by the presser member and pressed against the outer periphery of the paper separation roller at the curved portion, and a pressure roller elastically contacted with the paper separation roller and held rotatably. Therefore, before the paper is separated by the paper separation roller and the friction member, the paper can be reliably fed in by the pressure roller that contacts the paper separation roller elastically, and the paper can be transferred to the paper separation roller. It can be pressed against the paper to prevent paper feeding.
When two or more sheets of paper enter between the paper separation roller and the pressure roller, the pressure roller only applies pressure and does not rotate, so only the first sheet of paper that is in contact with the paper separation roller is fed. As a result, the paper can be reliably separated, and the paper is fed to the position of the friction member that has been separated to some extent, so that the paper can be separated even more easily by the friction member. This has the effect that it can be carried out reliably.
第１図は本発明の一実施例を示す側面図、第２図はその
一部の斜視図、第３図は二枚の用紙が入り込んだ時の状
態を示す側面図、第４図は従来の一例を示す側面図であ
る。
１３・・・用紙分離ローラ、２３・・・押圧部材、２４
・・・湾曲部、２５・・・摩擦部材、２６・・・押圧ロ
ーラ出 願 人 東京電気株式会社
図
Ｊ３１図Fig. 1 is a side view showing one embodiment of the present invention, Fig. 2 is a perspective view of a part thereof, Fig. 3 is a side view showing the state when two sheets of paper are inserted, and Fig. 4 is a conventional It is a side view showing an example. 13...Paper separation roller, 23...Press member, 24
...Curved portion, 25...Friction member, 26...Press roller Applicant Tokyo Electric Co., Ltd. Figure J31
Claims (1)
用紙分離ローラの外周の一部に沿つて湾曲した湾曲部を
備えた弾性のある押え部材と、この押え部材に保持され
て前記湾曲部の位置で前記用紙分離ローラの外周に圧接
した摩擦部材と、前記用紙分離ローラに弾発的に接触す
るとともに回転自在に保持された押圧ローラとよりなる
ことを特徴とする事務用機器の給紙装置。A paper separation roller connected to and driven by a drive unit, an elastic presser member having a curved portion curved along a part of the outer periphery of the paper separation roller, and the curved portion held by the presser member. A paper feeder for office equipment comprising: a friction member pressed against the outer periphery of the paper separation roller at a position; and a pressure roller elastically contacted with the paper separation roller and rotatably held. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24334988A JPH0289741A (en) | 1988-09-28 | 1988-09-28 | Paper feeding device for office equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24334988A JPH0289741A (en) | 1988-09-28 | 1988-09-28 | Paper feeding device for office equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0289741A true JPH0289741A (en) | 1990-03-29 |
Family
ID=17102509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24334988A Pending JPH0289741A (en) | 1988-09-28 | 1988-09-28 | Paper feeding device for office equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0289741A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5431385A (en) * | 1994-03-03 | 1995-07-11 | Pitney Bowes Inc. | Ingestion roller for mixed mail feeder |
-
1988
- 1988-09-28 JP JP24334988A patent/JPH0289741A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5431385A (en) * | 1994-03-03 | 1995-07-11 | Pitney Bowes Inc. | Ingestion roller for mixed mail feeder |
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