JPH02276727A - Driving device of paper placing board - Google Patents
Driving device of paper placing boardInfo
- Publication number
- JPH02276727A JPH02276727A JP1095809A JP9580989A JPH02276727A JP H02276727 A JPH02276727 A JP H02276727A JP 1095809 A JP1095809 A JP 1095809A JP 9580989 A JP9580989 A JP 9580989A JP H02276727 A JPH02276727 A JP H02276727A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- motor
- placing board
- switch
- speed
- 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
- 230000005611 electricity Effects 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、プリンタの給排紙部における用紙置台の駆動
装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a drive device for a paper tray in a paper feed/discharge section of a printer.
プリンタ、特にカットシートを使用する高速のレーザビ
ームプリンタでは用紙をプリンタへ安定して供給または
排出するため給排紙部に用紙置台の駆動装置を備えてい
る。Printers, particularly high-speed laser beam printers that use cut sheets, are equipped with a drive device for a paper tray in a paper feed/discharge section in order to stably supply or eject paper to the printer.
第３図乃至第５図は動作状態を異にする用紙置台の駆動
装置の動作説明図で、所定の寸法にカットされた用紙１
は収納箱２内の置台３上に載置され、置台３は後述する
モータによりアーム４を介して駆動され上下動する。FIGS. 3 to 5 are explanatory diagrams of the operation of the drive device for the paper tray in different operating states.
is placed on a stand 3 inside the storage box 2, and the stand 3 is driven by a motor to be described later via an arm 4 to move up and down.
置台３上の用紙１は上から一枚づつ持ち上げるピックア
ップ装置５により持ち上げられて搬送機構６へ送られる
。ピックアップ装置５には図示しないブロワにより負圧
にされるチャンバ５ａが設けられており、負圧により吸
引された用紙１はベルト伝動機構５ｂの穴明きベルト５
ｃの表面に付着する。The sheets 1 on the table 3 are lifted up by a pickup device 5 that picks up the sheets one by one from above and sent to a conveyance mechanism 6. The pickup device 5 is provided with a chamber 5a that is brought to negative pressure by a blower (not shown), and the paper 1 sucked by the negative pressure is transferred to a perforated belt 5 of a belt transmission mechanism 5b.
It adheres to the surface of c.
置台３上の用紙１の最上部の位置は位置センサ７により
検知され用紙１の最上部とピックアップ装置５の間隔が
第４図に示す如くδ＋Δδの場合、モータを駆動しアー
ム４を介して置台３を上昇させる。そして、用紙１の最
上部とピックアップ装置５の間隔が第３図に示す如くδ
になると位置センサ７が作動して置台３の移動を停止さ
せる。The position of the top of the paper 1 on the placement table 3 is detected by the position sensor 7, and if the distance between the top of the paper 1 and the pickup device 5 is δ+Δδ as shown in FIG. Raise 3. Then, the distance between the top of the paper 1 and the pickup device 5 is δ as shown in FIG.
When this happens, the position sensor 7 is activated to stop the movement of the table 3.
このようにして、用紙１を一枚づつ送り出し置台３が空
になると用紙１を装填するためモータを踵動して第５図
に示す如く置台３を収納箱２の底部まで下降させる。In this way, the sheets 1 are fed out one by one, and when the tray 3 becomes empty, the motor is operated to lower the tray 3 to the bottom of the storage box 2, as shown in FIG. 5, in order to load the sheets 1.
所で、用紙１を一枚づつ送り出す場合の置台３の位置制
御は短時間の断続動作の繰り返しとなり比較的遅い速度
で置台３を移動させるが、従来用紙を装填乃至交換する
場合も上記と同じ遅い速度で置台３を移動させるように
なっていた。By the way, the position control of the tray 3 when feeding out the sheets 1 one by one involves repeating short-term intermittent operations, and the tray 3 is moved at a relatively slow speed, but conventionally the same applies when loading or replacing paper. Placement stand 3 was to be moved at a slow speed.
従来技術では、用紙を装填乃至交換する場合、上記の如
く遅い速度で置台を移動させるようになっていたので、
所定の位置まで置台を移動するのに時間がかかり迅速な
操作ができないといった欠点があった。In the conventional technology, when loading or replacing paper, the tray was moved at a slow speed as described above.
There is a drawback that it takes time to move the stand to a predetermined position, and quick operation cannot be performed.
本発明は、従来技術の欠点を解消し、用紙の装填乃至交
換時に置台を移動させる速度を速くし迅速に操作を行な
うことができる用紙置台の駆動装を提供することを目的
とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a driving device for a paper tray that can eliminate the drawbacks of the prior art and can move the tray faster and operate quickly when loading or replacing paper.
本発明では、モータの速度を変換する手段を設け、用紙
の装填乃至変換時に、上記用紙の最上部が送り出されて
置台が上方に移動する速度より速い速度で上記置台を移
動させるようにしたことを特徴とする。In the present invention, a means for converting the speed of the motor is provided, and when loading or converting paper, the table is moved at a speed faster than the speed at which the table moves upward when the top of the paper is sent out. It is characterized by
（作用〕
本発明では、用紙の装填乃至変換時に、用紙の最上部を
一枚づつ送り出す場合の置台の移動速度より速い速度で
置台を移動させるようにしたので、迅速に装填乃至変換
の操作を行なうことが可能となる。(Function) In the present invention, when loading or converting paper, the loading table is moved at a faster speed than the moving speed of the loading table when feeding out the topmost sheet of paper one sheet at a time, so loading or converting operations can be performed quickly. It becomes possible to do so.
以下１図面を参照して本発明の一実施例について説明す
る。An embodiment of the present invention will be described below with reference to one drawing.
第１図は本発明の一実施例を示す用紙置台の暉動装置の
電気回路図で、その機械的構成部分については第３図乃
至第５図に示すものと同一である、第１図、第３図乃至
第５図において、８はアーム４を介して置台３を上下動
させるモータ、９はモータ８の速度を切替えるスイッチ
、ａい Ｒ２はその接点、１０はモータ８の回転方向を
切替えるスイッチ、ｂｌ、ｂ２はその接点、Ｒ□、Ｒ２
は回路の電流制御用抵抗で、抵抗Ｒ工は抵抗Ｒ２よりそ
の抵抗値が大きい。Ｖ□、ｖ２はモータ８の正逆、転用
電源で、電源Ｖ工、ｖ２を切替えて置台３を上昇または
下降させるようにしている。FIG. 1 is an electrical circuit diagram of a perturbation device for a paper tray showing an embodiment of the present invention, and its mechanical components are the same as those shown in FIGS. 3 to 5. 3 to 5, 8 is a motor that moves the table 3 up and down via the arm 4, 9 is a switch that changes the speed of the motor 8, R2 is its contact, and 10 is a switch that changes the rotation direction of the motor 8. Switch, bl, b2 are its contacts, R□, R2
is a current control resistor of the circuit, and the resistance value of resistor R is larger than that of resistor R2. V□, v2 are forward/reverse power supplies for the motor 8, and are used to raise or lower the table 3 by switching the power supplies V, v2.
次に、上記構成において、プリンタの給紙部における用
紙置台の能動装置の作動について説明する。Next, in the above configuration, the operation of the active device of the paper tray in the paper feeding section of the printer will be explained.
いま、給紙装置５により置台３上の用紙１の最上部が送
り出されて用紙１の最上部とピックアップ装置５の間隔
が第４図に示す如くδ＋Δδになり位置センサ７がオフ
になると、スイッチ９は接点ａ工、側に開路レスイッチ
１０はｂ０側に閉路して電源ｖ１より抵抗Ｒ１を経てモ
ータ８に至る回路が形成され置台３を上昇させる。そし
て、用紙１の最上部とピックアップ装置５の間隔が第３
図に示す如くδになると位置センサ７が作動しスイッチ
９をオフにして置台３の移動を停止させる。Now, when the top of the paper 1 on the tray 3 is fed out by the paper feeding device 5 and the distance between the top of the paper 1 and the pickup device 5 becomes δ+Δδ as shown in FIG. 4, and the position sensor 7 is turned off, the switch is turned off. 9 is a contact a, and the switch 10 is closed to the b0 side, forming a circuit from the power supply v1 to the motor 8 via the resistor R1, thereby raising the table 3. Then, the distance between the top of the paper 1 and the pickup device 5 is the third
As shown in the figure, when δ is reached, the position sensor 7 is activated and the switch 9 is turned off to stop the movement of the table 3.
用紙１を装填する場合は、図示しない用紙下降用スイッ
チを押すとスイッチ９は接点Ｒ２側に閉路し、スイッチ
１０は接点ｂ２側に閉路して＠源ｖ２より抵抗Ｒ２を経
てモータ８に至る回路が形成され、置台３は第５図に示
す如く収容箱２の底部まで下降する。用紙１の装填が完
了して上記用紙下降用スイッチを再度押すとスイッチ９
の接点ａ２は閉路のままで、スイッチ１０は接点ｂ１個
に閉路して置台３を上昇させ用紙１の最上部とピックア
ップ装置５の間隔がδになると置台３は移動を停止する
。When loading the paper 1, when the paper lowering switch (not shown) is pressed, the switch 9 is closed to the contact R2 side, and the switch 10 is closed to the contact b2 side, and the circuit from the source v2 to the motor 8 via the resistor R2. is formed, and the table 3 is lowered to the bottom of the storage box 2 as shown in FIG. When the loading of paper 1 is completed and the paper lowering switch is pressed again, switch 9
The contact a2 remains closed, and the switch 10 closes one contact b to raise the table 3, and when the distance between the top of the paper 1 and the pickup device 5 reaches δ, the table 3 stops moving.
なお、用紙１の交換の場合も上記と同様の作動により置
台３を上下動させる。In addition, when replacing the paper 1, the table 3 is moved up and down by the same operation as described above.
本実施例によれば、抵抗Ｒ１、Ｒ２の抵抗値はＲ工＞Ｒ
２に設定されているので、用紙の装填乃至交換時には用
紙の最上部を一枚づつ送り出す場合よりもモータの給電
回路に流れる実効電流が大となる。従って、モータの回
転速度が速くなるので、より速い速度で置台を上下動さ
せ迅速に用紙の装填乃至交換の操作を行なうことができ
る。According to this embodiment, the resistance values of resistors R1 and R2 are R>R
2, the effective current flowing through the motor power supply circuit is larger when loading or replacing paper than when feeding out the topmost paper sheet one by one. Therefore, since the rotational speed of the motor becomes faster, it is possible to move the table up and down at a faster speed and quickly load or replace sheets.
なお、実効電流値を変える方法としては、駆動電圧を変
える方法やスイッチング即動で、スイッチング周期を変
える方法などがある。Note that methods for changing the effective current value include a method of changing the drive voltage and a method of changing the switching period by instantaneous switching.
また、上記実施例ではプリンタの給紙部について説明し
たが排紙部においても用紙置台の駆動装置を同様に作動
させることができる。Further, in the above embodiment, the paper feed section of the printer has been described, but the drive device for the paper tray can be operated in the same manner in the paper discharge section as well.
第２図は歯車の噛合せによる動力変換装置の断面図で、
用紙置台の駆動装置の速度変換を機械的に行なうように
した他の実施例を示す。Figure 2 is a cross-sectional view of a power conversion device using meshing gears.
Another embodiment will be described in which the speed of the drive device for the paper tray is changed mechanically.
第２図において、１１はモータ８軸に設けた歯車、１２
．１３は中間軸、１４はアーム４を駆動する出力軸、１
５．１６は中間軸１２．１３に設けた電磁クラッチで、
歯車１１は中間軸１２．１３に設けた歯車１２ａ、１３
ａと噛合し、中間軸１２．１３に設けた歯車１２ｂ、１
３ｂは出力軸１４に設けた歯車１４ａと噛合するように
している。In Fig. 2, 11 is a gear provided on the 8 axes of the motor, 12
．． 13 is an intermediate shaft, 14 is an output shaft that drives the arm 4, 1
5.16 is an electromagnetic clutch installed on the intermediate shaft 12.13,
The gear 11 is a gear 12a, 13 provided on the intermediate shaft 12.13.
Gears 12b, 1 meshed with a and provided on the intermediate shaft 12.13
3b meshes with a gear 14a provided on the output shaft 14.
以下、上記構成において、その作動について説明する。The operation of the above configuration will be explained below.
まず、用紙１の最上部を送り出し、置台３を位置制御し
て上方に移動させるときは、電磁クラッチ１６を作動さ
せてモータ８の回転を中間軸１３を介して出力軸１４に
伝達する。First, when sending out the top part of the paper 1 and moving the table 3 upward by controlling the position, the electromagnetic clutch 16 is activated to transmit the rotation of the motor 8 to the output shaft 14 via the intermediate shaft 13.
また、用紙１の装填乃至交換時には電磁クラッチ１５を
作動させモータ８の回転を中間軸１２を介して出力軸１
４に伝達する。アーム４は出力軸１４により駆動され置
台３を上下動させる。Furthermore, when loading or replacing the paper 1, the electromagnetic clutch 15 is operated to control the rotation of the motor 8 via the intermediate shaft 12 to the output shaft 1.
4. The arm 4 is driven by an output shaft 14 to move the table 3 up and down.
所で、歯車１２ａの歯数２１と歯車１３ａの歯数Ｚ２は
Ｚ工〈Ｚ２ となるように設定されているので、中間
軸１２を介した方が出力軸１４の回転速度が速くなり置
台３をより速く上下動させることができる。By the way, since the number of teeth 21 of the gear 12a and the number of teeth Z2 of the gear 13a are set to be Z<Z2, the rotation speed of the output shaft 14 is faster through the intermediate shaft 12. can be moved up and down faster.
よって、本実施例による場合も上記電気的な制御による
場合と同様の効果を得ることができる。Therefore, in the case of this embodiment, the same effects as in the case of the above-mentioned electrical control can be obtained.
本発明によれば、従来技術の欠点を解消し、用紙の装填
乃至交換時に置台を移動させる速度を速くし迅速に操作
を行なうことができる用紙置台の駆動装置を得ることが
できる。According to the present invention, it is possible to solve the drawbacks of the prior art and to obtain a drive device for a paper tray that can move the tray at a faster speed and operate quickly when loading or replacing paper.
第１図は本発明の一実施例を示す用紙置台の駆動装置の
電気回路図、第２図は本発明の他の実施例を示す動力変
換装置の断面図、第３図乃至第５図は従来の動作状態を
異にする用紙置台の駆動装置の動作説明図である。
１は用紙、２は収納箱、３は置台、４はアーム５はピッ
クアップ装置、７は位置センサ、８はモータ、９．１０
はスイッチ、１２．１３は中間軸、１４は出力軸、１５
．１６は電磁クラッチ。
特許出願人の名称 日立工機株式会社FIG. 1 is an electric circuit diagram of a driving device for a paper tray showing one embodiment of the present invention, FIG. 2 is a sectional view of a power conversion device showing another embodiment of the present invention, and FIGS. 3 to 5 are FIG. 6 is a diagram illustrating the operation of a drive device for a paper tray in different operating states in the related art. 1 is paper, 2 is a storage box, 3 is a stand, 4 is an arm 5 is a pickup device, 7 is a position sensor, 8 is a motor, 9.10
is the switch, 12.13 is the intermediate shaft, 14 is the output shaft, 15
．． 16 is an electromagnetic clutch. Patent applicant name Hitachi Koki Co., Ltd.
Claims (1)
紙を載置し、該用紙が上から一枚送り出されると上記モ
ータの作動により上記置台が上方に移動して上記用紙の
最上部と、該用紙を持ち上げるピックアップ装置との間
隔を一定に保持するようにした用紙置台の駆動装置にお
いて、一上記モータの速度を変換する手段を設け、上記
用紙の装填乃至交換時に、上記用紙の最上部が送り出さ
れて上記置台が上方に移動する速度より速い速度で上記
置台を移動させるようにしたことを特徴とする用紙置台
の駆動装置。1. A plurality of sheets of paper are placed on a table that is driven by a motor and moves up and down, and when one sheet of paper is sent out from the top, the table is moved upward by the operation of the motor, and the top of the sheets of paper is moved upward. In a drive device for a paper tray that maintains a constant distance from a pickup device that lifts the paper, means is provided for converting the speed of the motor, so that when the paper is loaded or replaced, the top of the paper is A drive device for a paper tray, characterized in that the tray is moved at a faster speed than the speed at which the tray moves upward after being fed out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1095809A JPH02276727A (en) | 1989-04-14 | 1989-04-14 | Driving device of paper placing board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1095809A JPH02276727A (en) | 1989-04-14 | 1989-04-14 | Driving device of paper placing board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02276727A true JPH02276727A (en) | 1990-11-13 |
Family
ID=14147754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1095809A Pending JPH02276727A (en) | 1989-04-14 | 1989-04-14 | Driving device of paper placing board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02276727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009029567A (en) * | 2007-07-26 | 2009-02-12 | Ricoh Co Ltd | Automatic document feeder |
-
1989
- 1989-04-14 JP JP1095809A patent/JPH02276727A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009029567A (en) * | 2007-07-26 | 2009-02-12 | Ricoh Co Ltd | Automatic document feeder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5678814A (en) | Sheet feeding apparatus having a feeding tray and paper feeding method | |
| US20040061275A1 (en) | Device for controlling the means delivering sheets to a machine | |
| CN103042840B (en) | Sliding tandem media feeder in a printer | |
| JP4442532B2 (en) | Image forming apparatus | |
| JPH02276727A (en) | Driving device of paper placing board | |
| JPH06255807A (en) | Lift control device for sheet feed base device | |
| CN113500653A (en) | Cutting processing equipment of cell-phone fingerprint button base plate | |
| JP2000233838A (en) | Paper feeding device for printing equipment | |
| JP6491324B2 (en) | Feeder device and feeder tape carrier feeding method | |
| CN113923873B (en) | Dyestripping switching system | |
| JP2005225630A (en) | Paper feeding device, and recording device with the same | |
| US5195735A (en) | Paper handling method for controllably removing an individual sheet of paper from a stack of paper | |
| JP3932822B2 (en) | Paper feeder | |
| JPH10181980A (en) | Loading device for sheet member | |
| CN214878891U (en) | Paper tube loading and unloading device of rewinder for cigarette frame paper processing | |
| CN218024364U (en) | Feeding machine convenient for feeding of printing machine | |
| US5507224A (en) | Paper deck power lifter kit for retrofitting a manually cranked offset printing press | |
| JP2584024B2 (en) | Paper feeder | |
| KR100474481B1 (en) | A paper pick-up device for image forming aparatus | |
| JP2003118850A (en) | Paper feeder | |
| JPH06171770A (en) | Paper feeding device | |
| JPH09249318A (en) | Bottom plate lift device of paper feeder | |
| SU1169918A1 (en) | Arrangement for replacing pile in sheet press feeder | |
| JPS5933647Y2 (en) | printer paper feeder | |
| KR20210146028A (en) | Paper storage and supply device for easy ejection and re-storage of paper |