JPS6410416B2 - - Google Patents
Info
- Publication number
- JPS6410416B2 JPS6410416B2 JP13700280A JP13700280A JPS6410416B2 JP S6410416 B2 JPS6410416 B2 JP S6410416B2 JP 13700280 A JP13700280 A JP 13700280A JP 13700280 A JP13700280 A JP 13700280A JP S6410416 B2 JPS6410416 B2 JP S6410416B2
- Authority
- JP
- Japan
- Prior art keywords
- medium
- friction
- friction rollers
- force
- claw pieces
- 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
Links
- 210000000078 claw Anatomy 0.000 claims description 30
- 238000000926 separation method Methods 0.000 claims description 7
- 239000002609 medium Substances 0.000 description 72
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000012526 feed medium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【発明の詳細な説明】
この発明は、積層単票媒体の分離供給装置、す
なわち、ホツパ台上に積層された単票媒体を1枚
ずつ分離して電子計算機のプリンタ、複写機、印
刷機等に供給するための装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention is a stacked cut media separation/supply device, that is, a stacked cut media stacked on a hopper table, which is separated one by one to be used in computer printers, copying machines, printing machines, etc. This relates to a device for supplying
プリンタによつて単票媒体を連続的に自動処理
しようとする場合には、ホツパ台上に積層状態で
セツトされた単票媒体を1枚ずつ分離してプリン
タに送り込むことができる媒体供給装置が必要で
ある。従来のこの種装置は、積層された媒体の先
端隅部を爪片で押え、媒体の上面には摩擦ローラ
を当接させて、この摩擦ローラの摩擦力により積
層された媒体の最上部の1枚を前記爪片と摩擦ロ
ーラとの間で撓ませ、この撓みによつて爪片を乗
越えさせてプリンタへと供給するようにしてい
た。 If you want to continuously and automatically process cut media with a printer, you will need a media supply device that can separate the cut media set in a stack on the hopper stand one by one and feed it into the printer. is necessary. Conventional devices of this type press the leading corners of the stacked media with claws, bring a friction roller into contact with the top surface of the media, and use the frictional force of the friction roller to press the top corner of the stacked media. The sheet is bent between the claw piece and the friction roller, and this bending allows the sheet to be passed over the claw piece and fed to the printer.
このような従来装置の一例は第1図に示されて
おり、図中1はホツパ台、2はホツパ台1上に積
層された印字媒体、3,4は印字媒体2の先端両
隅部を係止している爪片、5,6は印字媒体2の
上面に当接している摩擦ローラ、7はその駆動軸
であつて、摩擦ローラ5,6を図中矢印の方向に
回転させることにより、摩擦ローラ5,6と媒体
2との間の摩擦係数が媒体2相互間の摩擦係数よ
り大きいことを利用して、媒体2の最上部の1枚
2aのみを爪片3,4との間で撓ませ、該媒体2
aがこの撓みにより爪片3,4を乗越えることを
利用して媒体2の分離供給を行つていたのであ
る。なお、8はガイド、9は互に圧接するローラ
9a,9bよりなるフイードローラであつて、ホ
ツパ台1は媒体2の供給につれて上動し、媒体2
の最上部の1枚2aが常にガイド8面上にあるよ
うにし、フイードローラ9は供給された1枚の媒
体2aを挾持して行送りその他の媒体の給送を行
うものである。 An example of such a conventional device is shown in FIG. 1, in which 1 is a hopper stand, 2 is a print medium stacked on the hopper stand 1, and 3 and 4 are two corners of the leading edge of the print medium 2. The locking claw pieces, 5 and 6 are friction rollers that are in contact with the upper surface of the printing medium 2, and 7 is the drive shaft thereof, and by rotating the friction rollers 5 and 6 in the direction of the arrow in the figure, By utilizing the fact that the friction coefficient between the friction rollers 5 and 6 and the medium 2 is larger than the friction coefficient between the medium 2, only the topmost sheet 2a of the medium 2 is moved between the claw pieces 3 and 4. The medium 2
The medium 2 is separated and supplied by taking advantage of the fact that the medium 2 passes over the claws 3 and 4 due to this deflection. In addition, 8 is a guide, 9 is a feed roller consisting of rollers 9a and 9b that are in pressure contact with each other, and the hopper table 1 moves upward as the medium 2 is fed.
The topmost sheet 2a of the medium 2a is always on the surface of the guide 8, and the feed roller 9 grips the supplied sheet 2a and performs line feeding and other medium feeding.
このような従来装置では、媒体2の最上部の1
枚2aに作用する摩擦ローラ5,6からの媒体駆
動力Fと爪片3,4からの反力Rとは、媒体2の
供給方向に略平行な一直線上に作用し、媒体2a
の各点に生ずる最大撓み角の方向は給紙方向とほ
ぼ平行になる。従つて媒体2aが爪片3,4を乗
越えるには、爪片3,4と当接している媒体2a
の先端部に相当程度の撓みを生じさせる必要があ
り、このとき爪片3,4から作用する反力Rに対
抗できる媒体駆動力Fが摩擦ローラ5,6によつ
て媒体2aに与えられねばならない。 In such a conventional device, the top 1 of the medium 2
The medium driving force F from the friction rollers 5, 6 acting on the sheet 2a and the reaction force R from the claw pieces 3, 4 act on a straight line approximately parallel to the feeding direction of the medium 2, and
The direction of the maximum deflection angle that occurs at each point is approximately parallel to the paper feeding direction. Therefore, in order for the medium 2a to get over the claw pieces 3 and 4, the medium 2a that is in contact with the claw pieces 3 and 4 must be
It is necessary to cause a considerable amount of deflection at the tip of the media 2a, and at this time, a media driving force F that can counteract the reaction force R acting from the claw pieces 3 and 4 must be applied to the media 2a by the friction rollers 5 and 6. No.
この媒体駆動力Fは、摩擦ローラ5,6と媒体
2aとの間の摩擦係数をa、摩擦ローラ5,6の
圧接力をPとした場合、aPなる値で表わされる
が、摩擦係数aの値は摩擦ローラ5,6に使用で
きる材料によつて決定されてしまうので、媒体駆
動力Fを増大させるためには、圧接力Pを大きく
してやらねばならない。このとき、最上部の媒体
2aと2枚目の媒体との間にはbPなる摩擦力が
作用し、媒体2aに与えられる駆動力Fがそれだ
け減殺されるとともに、2枚目の媒体を同時に送
り出そうとする力が働く。ここで、bは媒体2相
互間の摩擦係数であつて、この摩擦係数bは、媒
体2相互間に存在する空気層の破壊および媒体2
表面の微小な凹凸の噛合いに起因して、法線力P
が増大すればするほど大きくなり、従つて必要な
媒体駆動力Fが増大するほど、媒体が2枚送りさ
れる率は増大することとなる。 This medium driving force F is expressed as aP, where a is the friction coefficient between the friction rollers 5 and 6 and the medium 2a, and P is the pressing force between the friction rollers 5 and 6. Since the value is determined by the material that can be used for the friction rollers 5 and 6, in order to increase the medium driving force F, the pressing force P must be increased. At this time, a frictional force bP acts between the topmost medium 2a and the second medium, and the driving force F applied to the medium 2a is reduced accordingly, and the second medium is simultaneously fed. The force that tries to come out works. Here, b is a coefficient of friction between the media 2, and this friction coefficient b is determined by the destruction of the air layer existing between the media 2 and
Due to the engagement of minute irregularities on the surface, the normal force P
The larger the value is, the larger the required medium driving force F is. Therefore, as the required medium driving force F increases, the rate at which two sheets of media are fed increases.
この発明は、より小さな媒体駆動力のもとで媒
体2aが爪片3,4から離脱できるようにするこ
とにより、必要な摩擦ローラの圧接力を減少さ
せ、もつて媒体の分離供給がより確実に行われる
ような媒体供給装置を提供しようとするものであ
つて、この目的のために、この発明の積層単票媒
体の分離供給装置では、供給媒体の前記爪片から
の離脱が、媒体給送方向内側に向けて媒体の中心
線に対して対称に配置した左右一対の摩擦ローラ
からの摩擦力の作用の基で行われ、爪片から離脱
した後の媒体の移送が、媒体給送方向に向けた摩
擦ローラからの摩擦力の作用の基で行われるよう
に構成されている。 This invention allows the medium 2a to separate from the claw pieces 3 and 4 under a smaller medium driving force, thereby reducing the necessary pressure contact force of the friction roller, and thereby making it possible to separate and feed the medium more reliably. To this end, in the laminated cut media separation and feeding device of the present invention, the detachment of the feeding medium from the claw piece is caused by the medium feeding. This is done based on the action of frictional force from a pair of left and right friction rollers that are arranged symmetrically with respect to the center line of the medium toward the inside in the feeding direction, and the medium is moved in the medium feeding direction after being released from the claw piece. This is performed under the action of a frictional force from a friction roller directed toward.
以下、第2図ないし第5図に示す実施例に基づ
いて説明する。 The following will explain the embodiments shown in FIGS. 2 to 5.
第2図はこの発明の第1実施例を示す平面図で
あつて、1はホツパ台、2は媒体、3,4は爪
片、8はガイド、9はフイードローラ、10は図
示しない機枠に軸承されたロツド、11,12は
このロツド10に固着された腕であつて、これら
は従来装置と同様に構成される。従来装置ではこ
の腕11,12の先端に摩擦ローラ5,6の駆動
軸7が装着されるが、この実施例では、この腕1
1,12の先端にピン13,14で枢支されたフ
レーム15が設けられ、このフレーム15に2個
の等速ユニバーサルジヨイント16,17で屈曲
されて連結された駆動軸18,19,20が軸承
されている。21,22はそれぞれ駆動軸18,
19に固着された摩擦ローラ、23は駆動軸20
に固着された摩擦ローラであり、摩擦ローラ23
の径は摩擦ローラ21,22の径より小さく、2
4はこの駆動軸18,19,20を回転させる電
動機、25はカツプリングである。 FIG. 2 is a plan view showing the first embodiment of the present invention, in which 1 is a hopper stand, 2 is a medium, 3 and 4 are claw pieces, 8 is a guide, 9 is a feed roller, and 10 is a machine frame (not shown). The journalled rods 11, 12 are arms fixed to this rod 10 and are constructed in the same manner as in prior art devices. In the conventional device, the drive shafts 7 of the friction rollers 5 and 6 are attached to the tips of the arms 11 and 12, but in this embodiment, the drive shafts 7 of the arms 1
A frame 15 is provided at the tips of the shafts 1 and 12, and drive shafts 18, 19, 20 are bent and connected to the frame 15 by two constant velocity universal joints 16, 17. is supported on the shaft. 21 and 22 are drive shafts 18 and 22, respectively.
19 is a friction roller fixed to it, 23 is a drive shaft 20
This is a friction roller fixed to the friction roller 23.
The diameter of the friction rollers 21 and 22 is smaller than that of the friction rollers 21 and 22.
4 is an electric motor that rotates the drive shafts 18, 19, and 20, and 25 is a coupling.
上述のように構成された媒体供給装置は、その
フレーム15をピン13,14まわりに回動させ
ることによつて、第3図および第4図に示すよう
に、摩擦ローラ21,22を媒体2上に圧接させ
た状態および摩擦ローラ21,22を離隔させて
摩擦ローラ23のみを媒体2に圧接させた状態に
切換えることができる。そしてこの実施例の媒体
供給装置では、第3図の状態で媒体2の給送が開
始され、媒体2の最上部の1枚2aが爪片3,4
を離脱した後、第4図の状態に切換えられて媒体
2aの給送が行われる。 By rotating the frame 15 around the pins 13 and 14, the medium supply device configured as described above moves the friction rollers 21 and 22 to the medium 2, as shown in FIGS. 3 and 4. It is possible to switch between a state in which the medium 2 is pressed against the medium 2 and a state in which only the friction roller 23 is brought into pressure contact with the medium 2 by separating the friction rollers 21 and 22. In the medium supply device of this embodiment, feeding of the medium 2 is started in the state shown in FIG.
After the medium 2a is removed, the state is changed to that shown in FIG. 4, and the medium 2a is fed.
第3図に示すように、媒体2の上面に摩擦ロー
ラ21,22のみが圧接された状態で摩擦ローラ
が駆動されると、媒体2の最上部の1枚2aに
は、媒体2aの供給方向に対して傾斜した摩擦駆
動力Fが作用し、この摩擦駆動力Fは、媒体供給
方向の力Faと媒体2aを内方に移動させようと
する力Fbとに分解することができる。媒体供給
方向の力Faは、従来装置と同様媒体2aを爪片
3,4との間で撓ませて爪片3,4を乗越えさせ
るように作用し、媒体を内方へ押す力Fbは、媒
体2aの先端両隅部を内方へ移動させて爪片3,
4の内側へ逃がし、爪片3,4から離脱させるよ
うに作用する。この2つの作用の相乗効果によつ
て、媒体2aはより小さな媒体駆動力Fのもとで
爪片3,4から離脱することとなり、前述したよ
うな理由により、媒体2の最上部の1枚2aのみ
が確実に分離されて爪片3,4から離脱すること
となる。媒体2aが爪片3,4から離脱した後、
フレーム15を回動させて第4図に示す状態に
し、摩擦ローラ21,22を離隔させて摩擦ロー
ラ23を圧接させ、媒体2aをフイードローラ9
に向けて送り出す。フレーム15を回動させる手
段は、図には示されていないが、ソレノイドなど
を用いることによつて容易に実現することができ
る。 As shown in FIG. 3, when the friction rollers are driven with only the friction rollers 21 and 22 in pressure contact with the upper surface of the medium 2, the topmost sheet 2a of the medium 2 has a A frictional driving force F is applied which is inclined to the medium 2a, and this frictional driving force F can be decomposed into a force Fa in the medium supply direction and a force Fb which tends to move the medium 2a inward. The force Fa in the medium supply direction acts to bend the medium 2a between the claws 3 and 4 and make it overcome the claws 3 and 4, as in the conventional device, and the force Fb pushing the medium inward is as follows: Move both corners of the tip of the medium 2a inward to attach the claw pieces 3,
4 and separates from the claw pieces 3 and 4. Due to the synergistic effect of these two actions, the medium 2a is separated from the claw pieces 3 and 4 under a smaller medium driving force F, and for the reason mentioned above, the topmost sheet of the medium 2 Only 2a is reliably separated and detached from the claw pieces 3 and 4. After the medium 2a leaves the claw pieces 3 and 4,
The frame 15 is rotated to the state shown in FIG.
send it towards. Although the means for rotating the frame 15 is not shown in the figure, it can be easily realized by using a solenoid or the like.
第5図に示す第2実施例は、摩擦ローラの駆動
軸を媒体2の面と平行な平面内で回転させて媒体
の給送初期に摩擦ローラが斜めに当接するように
したものである。図より容易に理解されるよう
に、この実施例では、等速ユニバーサルジヨイン
ト26で連結された駆動軸27,28に摩擦ロー
ラ29,30が固着され、ジヨイント26の部分
をソレノイドなどで移動させることによつて、摩
擦ローラ29,30の方向を変換し、媒体2aに
作用する摩擦力の方向を切換えるようにしてい
る。 In the second embodiment shown in FIG. 5, the drive shaft of the friction roller is rotated in a plane parallel to the surface of the medium 2, so that the friction roller abuts obliquely at the beginning of feeding the medium. As can be easily understood from the figure, in this embodiment, friction rollers 29 and 30 are fixed to drive shafts 27 and 28 connected by a constant velocity universal joint 26, and the joint 26 is moved by a solenoid or the like. In particular, the directions of the friction rollers 29 and 30 are changed, and the direction of the frictional force acting on the medium 2a is switched.
上述のように、供給媒体2aの爪片3,4から
の離脱が、媒体給送方向内側に向けて媒体2の中
心線に対して対称に配置した左右一対の摩擦ロー
ラ21,22または29,30からの摩擦力の作
用のもとで行われるようにすれば、供給媒体2a
の先端両隅部は撓みによつて爪片3,4を乗越え
ようとすると同時に爪片3,4の内方に逃げて爪
片3,4から離脱しようとするから、この相乗作
用によつて媒体2aはより小さな摩擦力Fのもと
で爪片3,4から離脱し、摩擦ローラ21,22
または29,30の圧接力を低減することができ
ることとなり、供給媒体2aを2枚目の媒体から
確実に分離して供給することが可能となる。そし
て媒体2が爪片3,4から離脱した後は、媒体2
の給送方向を向いた摩擦ローラ23,29,30
で媒体2を移送するので、媒体を平坦な状態で確
実に給紙することができる。 As described above, the separation of the supply medium 2a from the claw pieces 3, 4 is caused by the pair of left and right friction rollers 21, 22 or 29, which are arranged symmetrically with respect to the center line of the medium 2, facing inward in the medium feeding direction. 30, the feed medium 2a
Due to this synergistic effect, both corners of the tip try to get over the claw pieces 3 and 4 and at the same time escape inward and separate from the claw pieces 3 and 4. The medium 2a separates from the claw pieces 3 and 4 under a smaller frictional force F, and the friction rollers 21 and 22
Alternatively, the pressure contact forces of 29 and 30 can be reduced, and the supply medium 2a can be reliably separated from the second medium and supplied. After the medium 2 is released from the claw pieces 3 and 4, the medium 2
Friction rollers 23, 29, 30 facing the feeding direction of
Since the medium 2 is transported in the same manner, the medium can be reliably fed in a flat state.
第1図は従来の積層単票媒体の分離供給装置の
一例を示す斜視図、第2図はこの発明の第1実施
例を示す平面図、第3図および第4図はこの第1
実施例における摩擦ローラと媒体との当接状態を
示す側面図、第5図はこの発明の第2の実施例を
示す平面図である。
図中、1はホツパ台、2は印字媒体、3,4は
爪片、8はガイド、9はフイードローラ、13,
14はピン、15はフレーム、16,17は等速
ユニバーサルジヨイント、18,19,20は駆
動軸、21,22,23は摩擦ローラ、26は等
速ユニバーサルジヨイント、27,28は駆動
軸、29,30は摩擦ローラである。
FIG. 1 is a perspective view showing an example of a conventional stacked cut media separation and supply device, FIG. 2 is a plan view showing a first embodiment of the present invention, and FIGS. 3 and 4 are this first embodiment.
FIG. 5 is a side view showing the state of contact between the friction roller and the medium in the embodiment, and FIG. 5 is a plan view showing the second embodiment of the present invention. In the figure, 1 is a hopper stand, 2 is a print medium, 3 and 4 are claw pieces, 8 is a guide, 9 is a feed roller, 13,
14 is a pin, 15 is a frame, 16, 17 are constant velocity universal joints, 18, 19, 20 are drive shafts, 21, 22, 23 are friction rollers, 26 is a constant velocity universal joint, 27, 28 are drive shafts , 29, 30 are friction rollers.
Claims (1)
る爪片3,4と適時この媒体の上面に圧接して媒
体に移送力を付与する摩擦ローラとを備えた積層
単票媒体の分離供給装置において、供給媒体2a
の前記爪片からの離脱が、媒体給送方向内側に向
けて媒体の中心線に対して対称に配置した左右一
対の摩擦ローラ21,22,29,30からの摩
擦力の作用の基で行われ、爪片から離脱した後の
媒体の移送が、媒体給送方向に向けた摩擦ローラ
23,29,30からの摩擦力の作用の基で行わ
れる事を特徴とする、積層単票媒体の分離供給装
置。1 A laminated cut medium equipped with claws 3 and 4 that lock both corners of the tip of the stacked cut medium 2, and a friction roller that presses against the top surface of the medium at appropriate times to apply a conveying force to the medium. In the separation supply device, the supply medium 2a
The separation from the claw piece is performed under the action of frictional force from a pair of left and right friction rollers 21, 22, 29, and 30 that are arranged symmetrically with respect to the center line of the medium toward the inside in the medium feeding direction. This is a laminated cut medium, characterized in that the medium is transferred after being separated from the claw piece under the action of frictional force from friction rollers 23, 29, and 30 directed in the medium feeding direction. Separation supply device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13700280A JPS5762126A (en) | 1980-10-01 | 1980-10-01 | Separating and supplying apparatus for stacked single slip medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13700280A JPS5762126A (en) | 1980-10-01 | 1980-10-01 | Separating and supplying apparatus for stacked single slip medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5762126A JPS5762126A (en) | 1982-04-15 |
JPS6410416B2 true JPS6410416B2 (en) | 1989-02-21 |
Family
ID=15188496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13700280A Granted JPS5762126A (en) | 1980-10-01 | 1980-10-01 | Separating and supplying apparatus for stacked single slip medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5762126A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0811633B2 (en) * | 1986-03-25 | 1996-02-07 | 日本電気株式会社 | Paper feed mechanism |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54114284U (en) * | 1978-01-30 | 1979-08-10 | ||
JPS5521383A (en) * | 1978-08-03 | 1980-02-15 | Ricoh Co Ltd | Apparatus for feeding out stacked sheet |
-
1980
- 1980-10-01 JP JP13700280A patent/JPS5762126A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5762126A (en) | 1982-04-15 |
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