JPS62234966A - Paper feed apparatus - Google Patents
Paper feed apparatusInfo
- Publication number
- JPS62234966A JPS62234966A JP7877186A JP7877186A JPS62234966A JP S62234966 A JPS62234966 A JP S62234966A JP 7877186 A JP7877186 A JP 7877186A JP 7877186 A JP7877186 A JP 7877186A JP S62234966 A JPS62234966 A JP S62234966A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- roller
- pressure
- printing
- conveyance
- 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
- 238000007639 printing Methods 0.000 claims description 21
- 230000006835 compression Effects 0.000 abstract description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 230000032258 transport Effects 0.000 description 10
- 108091008695 photoreceptors Proteins 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007665 sagging Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Handling Of Continuous Sheets Of Paper (AREA)
- Advancing Webs (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は連続折りたたみ用紙を印字、排出するライン
プリンタ装置等の用紙搬送装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper conveyance device such as a line printer device that prints and discharges continuous folded paper.
第2図は連続折りたたみ用紙を印字、排出するラインプ
リンタ装置等の一般的な従来の電子写真印刷装置の概略
図である。FIG. 2 is a schematic diagram of a general conventional electrophotographic printing device such as a line printer device that prints and discharges continuous folded paper.
このような構成をもつ印刷装置の一例として、特願昭6
0−117171号がある。図において、印刷プロセス
に従って、構成を説明する。まず感光体ドラム111上
に潜像形成手段(2)により潜像を形成する。次に現像
手段(31により現像粉を供給して感光体ドラム+11
上に形成された潜像を可視像化する。次に転写手段イ4
1によシ感光体ドラムill上の可視像全用紙(6)へ
転写する。転写後感光体ドラム(1)上に残留する現像
粉はクリーニングブラシ(6)により除去される。一方
用紙(6)はホッパ(Illにより順次引出され、ロー
ラ機構(7)、転写手段14)へ搬送される。そして、
転写手段(4)により感光体ドラム田土に形成された可
視像が用紙(61に転写される。次に後部トラクタ(8
1、加熱定着器(9)へ送られ加熱定着した後にスタッ
カ霞に送られて折りたたまれる。As an example of a printing device with such a configuration,
There is No. 0-117171. In the figure, the configuration will be explained according to the printing process. First, a latent image is formed on the photosensitive drum 111 by the latent image forming means (2). Next, the developing means (31) supplies developer powder to the photosensitive drum +11.
The latent image formed above is visualized. Next, transfer means A4
1, the entire visible image on the photoreceptor drum is transferred to the paper (6). Developing powder remaining on the photosensitive drum (1) after transfer is removed by a cleaning brush (6). On the other hand, the paper (6) is sequentially pulled out by the hopper (Ill) and conveyed to the roller mechanism (7) and the transfer means 14. and,
The visible image formed on the photoreceptor drum by the transfer means (4) is transferred to the paper (61).Then, the rear tractor (8)
1. After being sent to the heat fixing device (9) and heat-fixed, it is sent to the stacker Kasumi and folded.
次に用紙の装填ならびに動作について説明する。用紙押
え板(12Jを開放する。次に押圧手段(7a)yk操
作し、ローラ(7b)への押圧を解除することにより出
来たスキマ部に用紙(5)を通過させ、同時に感光体ド
ラム+11と転写手段(4)の間を通過させて、後部ト
ラクタ(8)の突起部に用紙送り孔を装填し、用紙押え
板(1乃を閉じる。次に押圧手段(7a)を操作し用紙
(6)をローラ(7b)との間ではさみ押圧を加え7
+7クシヨン支持する。Next, paper loading and operation will be explained. Release the paper holding plate (12J). Next, operate the pressing means (7a) yk to release the pressure on the roller (7b), allowing the paper (5) to pass through the gap created, and at the same time press the photosensitive drum +11. and the transfer means (4), load the paper feed hole into the protrusion of the rear tractor (8), and close the paper presser plate (1).Next, operate the pressing means (7a) to transfer the paper (6). ) with the roller (7b) and apply pressure 7
+7 support.
モータが回転し後部トラクタ(8)が搬送方向に走行し
はじめるとローラ(7b)と押圧手段(7a)の押圧に
より用紙+51に適当なパックテンションが加わり用紙
(6)はたるむことなく順次印刷される。When the motor rotates and the rear tractor (8) begins to travel in the transport direction, appropriate pack tension is applied to the paper +51 by the pressure of the roller (7b) and the pressing means (7a), and the paper (6) is printed one after another without sagging. Ru.
一度印刷が終了し、その用紙セットの状態で連続して再
び印刷が行なわれる時そのまま用紙走行ならびに印刷を
行なうと駆動系等の慣性力により一定スピードに達する
間印刷出米ないため印刷終了部と開始部に余白が生じる
。この余白部を極力少なくするため、あらかじめ用紙を
わずかに逆走性させる。Once printing has finished, if printing is continued again with the same paper set, if the paper continues to run and print, the inertia of the drive system will prevent printing until it reaches a certain speed, so the end of printing will occur. A blank space appears at the beginning. In order to minimize this margin, the paper is made to run slightly backwards in advance.
この時ローラ(7b)には、トラクタの回転力が伝達さ
れるので、用紙は氷ツバ側に送りもどされる。At this time, since the rotational force of the tractor is transmitted to the roller (7b), the paper is sent back to the ice brim side.
従来の装置は、ローラ機構の押圧手段の押圧が常に一定
であるため用紙搬送方向に送る場合、用紙の紙送り用孔
が後部トラクタの用紙搬送用突起によってつぶされるこ
とのない程度のバックテンション力(すなわちローラに
対する押圧力)以下に設定する必要がある。これは用紙
厚が薄くなれば、さらに小さく設定する必要がある。と
ころが逆走待時は、トラクタにより送り戻される用紙が
たるむことなく搬送するだけの搬送力がないと感光体ド
ラムに用紙が接触し汚れる場合がある。これは厚紙にな
ると、腰がつよく、搬送力が足シないと紙パス上でわん
曲しやすく、搬送力(すなわちローラに対する押圧力)
が大きく必要になる。すなわち用紙搬送方向のバックテ
ンション力となる押圧力と逆走待時の搬送力となる押圧
力に適する一定の押圧力を設定するのが内錐である等の
問題があったこの発明は上記のような問題点を解消する
ためになされたもので紙パス形状や7リクシヨン、用紙
の厚みに左右されやすい搬送方向のパックテンション力
となる押圧力と逆走待時の搬送力となる押圧力の両方に
適する押圧力の調整に多大な時間f?、*やすることの
ない印刷装置を得ることを目的とする。In conventional devices, the pressure of the pressing means of the roller mechanism is always constant, so when feeding the paper in the paper transport direction, the back tension force is sufficient to prevent the paper feeding hole of the paper from being crushed by the paper transport protrusion of the rear tractor. (that is, the pressing force against the roller) or less. This needs to be set even smaller if the paper thickness becomes thinner. However, during reverse running and standby, if there is not enough conveyance force to convey the paper back by the tractor without sagging, the paper may come into contact with the photoreceptor drum and become dirty. This is because thick paper is stiff and tends to bend on the paper path if the conveyance force is not sufficient.
is greatly needed. In other words, this invention has problems such as the inner cone is used to set a constant pressing force suitable for the back tension force in the sheet conveying direction and the pressing force as the conveying force during reverse running. This was done to solve these problems, and it has two types: one is the pressing force that acts as the pack tension force in the conveying direction, which is easily influenced by the paper path shape, seven tractions, and the thickness of the paper, and the other is the pressing force that is the conveying force during reverse travel. It takes a lot of time to adjust the pressing force to suit both. The purpose is to obtain a printing device that does not require .
この発明に係る用紙搬送装置は、印字部をはさんで後部
に印刷用紙の紙送り用孔に係合して印刷用紙を搬送する
搬送用突起を有するトラクタと、前部に印刷用紙をロー
ラと押圧手段ではさんで押圧を加え、用紙搬送方向には
回転せず逆走待時にのみ回転するよう軸支され、用紙に
パックテンションを与えるローラ機構を備えた用紙搬送
装置において前記押圧手段の押圧力が用紙搬送方向と逆
走待時において可変できるよう配設した押圧可変手段を
設けたものである。The paper conveyance device according to the present invention includes a tractor having a conveyance protrusion that engages with a paper feed hole of the printing paper at the rear part across the printing section and conveys the printing paper, and a roller that transports the printing paper at the front part. In a paper conveying device equipped with a roller mechanism that applies pressure between pressing means, does not rotate in the paper transport direction but rotates only when traveling in reverse, and applies pack tension to the paper, the pressing force of the pressing means is A pressure variable means is provided so that the pressure can be varied in the paper conveyance direction and during reverse travel.
この発明における押圧可変手段は、押圧手段の抑圧を用
紙の搬送時に紙送り用孔のつぶれを生じない適当な押圧
に設定し、逆送時には、用紙厚が厚くても用紙のわん曲
性による感光体ドラムとの接M!ll−防ぐだけの搬送
力に必要な押正に設定することが容易に個々に独立して
出来、安定した搬送が出来る。The variable pressure means in this invention sets the pressure of the pressure means at an appropriate pressure that does not cause collapse of the paper feed hole during conveyance of the paper, and when the paper is conveyed in the reverse direction, even if the paper is thick, it is exposed to light due to the curvature of the paper. Contact M with the body drum! It is easy to set the push force necessary for the conveyance force sufficient to prevent ll- 1-1, independently, and stable conveyance can be achieved.
以下この発明の一実施例を図について説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第1図において、(8)は用紙(5)をホッパからスタ
ッカまで送る後部トラクタ、02)は用紙(5)を後部
トラクタにはさんで浮き上りを防止する用紙押え板、−
は用紙搬送方向(矢印A方向)には回転せず、その反対
方向にのみ回転するよう軸支されたローラ、@υは前記
用紙(5)を前記ローラーとの間にはさんで押圧全加え
る押圧手段であり、押圧を加えたり解除したシ出来る構
造になっている。(ZXa)は回動自在に支持された抑
圧ローラであり、(gtb)は押圧ローラ(lla)の
軸に押圧を与える圧縮バネ、(21c)は圧縮バネ(g
lb)を介して押圧ローラ(gla) k支えるレバー
であり、押圧可変手段である偏心カム(至)に接するよ
うに軸(gxa)において、矢印B方向に圧縮バネ(g
o+)より大きな力で軸支されている。In Fig. 1, (8) is a rear tractor that transports the paper (5) from the hopper to the stacker, 02) is a paper holding plate that holds the paper (5) between the rear tractor and prevents it from rising;
is a roller that is pivoted so that it does not rotate in the paper transport direction (direction of arrow A), but only in the opposite direction, @υ is a roller that holds the paper (5) between it and applies full pressure. It is a pressing means and has a structure that allows it to apply and release pressure. (ZXa) is a rotatably supported pressing roller, (gtb) is a compression spring that applies pressure to the shaft of the pressing roller (lla), and (21c) is a compression spring (g
A compression spring (g) is attached to the shaft (gxa) in the direction of arrow B so as to be in contact with the eccentric cam (to), which is a lever that supports the pressure roller (gla) k and is a pressure variable means via the pressure roller (g).
o+) is pivoted with a greater force.
前記ローラーに対する押圧の解除は、前記軸(ald)
の一端に設けられた図示しないレバーを操作することに
より行なわれる。また前記偏心カム@は前記圧縮バネ(
gxb)のたわみ量を可変することにより、前記ローラ
ーに対する前記押圧ローラ(21LL)の押圧力を変え
るものであり、図示しないロータリンレノイドにより電
気的に揺動する。To release the pressure on the roller, the shaft (ald)
This is done by operating a lever (not shown) provided at one end of the . Further, the eccentric cam @ is connected to the compression spring (
By varying the amount of deflection of the press roller (21LL), the pressing force of the press roller (21LL) against the roller is changed, and the press roller (21LL) is electrically oscillated by a rotary lenoid (not shown).
次に用紙の装填ならびに動作について説明する。用紙押
え板0乃ヲ開放する。次に押圧手段(2Iを操作し、ロ
ー、9@への押圧を解除することによシ、出来たスキマ
部に、用紙(6)を通過させ、同時に感光体ドラム+1
1と転写手段(41の間を通過させて、後部トラクタ(
8)の突起部に用紙送り孔を装填し、用紙押え仮型を閉
じる、次に押圧手段@11を操作し、用紙(6)をロー
ラーとの間ではさみ押圧を加えフリクション支持する。Next, paper loading and operation will be explained. Release the paper presser plate 0. Next, by operating the pressing means (2I and releasing the pressure on LOW and 9@), the paper (6) is passed through the created gap, and at the same time the photosensitive drum +1
1 and the transfer means (41), and transfer the rear tractor (
Load the paper feed hole into the protrusion 8), close the temporary paper presser mold, and then operate the pressing means @11 to sandwich the paper (6) between the rollers and apply pressure to support it by friction.
用紙を搬送する場合は、スタートスイッチONにヨリ、
ロータリンレノイドが働き偏心カム−を圧縮バネ(gi
b)のバネ力が小さくなる方向に揺動させ次にモータが
回転し、後部トラクタ(8)が搬送方向に走行しはじめ
るとローラ翰と押圧手段(2υの押圧によシ用紙(5)
に適当なバックテンションが加わり、用紙(5)は孔つ
ぶれもなく、たるむこともなく順次印刷されていく。一
度印刷が終了し、その用紙セットの状態が連続して再び
印刷が行なわれる時その′iま、用紙走行ならびに印刷
を行なうと駆動系等の慣性力により、一定スピードに達
する間印刷出来ないため、印刷終了部と開始部に余白が
生じる。この余白部を極力少なくするため、あらかじめ
用紙をわずかに逆走行させる必要がある。When transporting paper, turn on the start switch and
The rotary lenoid works to compress the eccentric cam with the compression spring (gi).
When the motor is rotated and the rear tractor (8) begins to move in the conveying direction, the paper (5) is swung in the direction in which the spring force of b) is reduced.
Appropriate back tension is applied to the paper (5), and the paper (5) is printed one after another without collapsing the holes or sagging. Once printing has been completed, the state of the paper set continues and if printing is performed again, the inertial force of the drive system will prevent printing until it reaches a certain speed. , margins appear at the end and start of printing. In order to minimize this margin, it is necessary to run the paper slightly backwards in advance.
この時ロータリンレノイドが働き、偏心カム四を圧縮バ
ネ(gtb)のバネ力が大きくなる方向に揺動させる、
次にモータが回転し、ローラーと押圧手段αυの押圧力
とトラクタ速度よりわずかに早くしたローラ速度の差に
より用紙(5)に適当な引張力が加わり、用紙(6)は
たるむことなく、従ってドラムとの接触もなく、汚れな
い状態で定位置に逆走行させることができる。At this time, the rotary lenoid works and swings the eccentric cam 4 in the direction where the spring force of the compression spring (gtb) increases.
Next, the motor rotates, and an appropriate tension is applied to the paper (5) due to the difference between the pressing force of the roller and the pressing means αυ and the roller speed slightly faster than the tractor speed, so that the paper (6) does not sag and therefore There is no contact with the drum, and it can be moved backwards to a fixed position without getting dirty.
なお、上記実施例では、押圧手段にローラが図示されて
いるが板バネ等でもよめ。In the above embodiment, a roller is shown as the pressing means, but a plate spring or the like may also be used.
また、押圧可変手段に偏心カムとロータリンレノイドを
使用しているが、レバーを揺動させバネのたわみ量が変
化するように押し引きレバーをモータや他のソレノイド
で駆動しても同じような効果が得られる。In addition, although an eccentric cam and a rotary lenoid are used as the pressure variable means, the same effect can be obtained by driving the push/pull lever with a motor or other solenoid to swing the lever and change the amount of deflection of the spring. Effects can be obtained.
以上のように、この発明によれば押圧手段の押圧を可変
に出来る押圧可変手段を設けたので用紙搬送時には紙送
り用孔りぶれを生じない適当な抑圧に設定し、逆送時に
は用紙厚が厚くても、用紙のわん曲性による感光体の接
[−防ぐだけの搬送力に必要な押圧に設定するのが各々
独立して容易に調整出来、安定した搬送が出来る。As described above, according to the present invention, since the variable pressure means is provided which can vary the pressure of the pressure means, it is possible to set the pressure to an appropriate level that does not cause paper feed hole deviation during paper transport, and to adjust the thickness of the paper during reverse transport. Even if the paper is thick, it can be easily adjusted independently to set the pressure necessary to prevent the photoreceptor from coming into contact with the photoreceptor due to the curvature of the paper, allowing stable transport.
第1図はこの発明の一実施例による用紙搬送装置全示す
断面側面図、第2図は従来の用紙搬送装置を含む電子写
真印刷装置の断面図である。
図において、(11は感光体ドラム、14)は転写手段
、(6)は用紙、(7)は前部トラクタ、(8)は後部
トラクタ、(12!Jは用紙押え板、翰はロータ、■υ
は押圧手段、cl!!は押圧可変手段である。
なお各図中の同一符号は同−又は相当部分を示す。FIG. 1 is a cross-sectional side view showing the entire sheet conveying device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of an electrophotographic printing apparatus including a conventional sheet conveying device. In the figure, (11 is the photosensitive drum, 14) is the transfer means, (6) is the paper, (7) is the front tractor, (8) is the rear tractor, (12!J is the paper presser plate, the handle is the rotor, ■υ
is the pressing means, cl! ! is a pressure variable means. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
して印刷用紙を搬送する搬送用突起を有するトラクタと
、前部に印刷用紙をローラと押圧手段ではさんで押圧を
加え、用紙搬送方向には、回転せず逆送行時にのみ回転
するよう軸支し、トラクタによる搬送速度に対して、ロ
ーラによる搬送速度をわずかに速くしたバックテンショ
ンローラ機構を備えた用紙搬送装置において、前記押圧
手段の押圧力を用紙搬送方向時と逆送行時において可変
できるよう配設する押圧可変手段を具備したことを特徴
とする用紙搬送装置。A tractor with a printing part sandwiched between the rear part and a conveying protrusion that engages with a paper feed hole of the printing paper to transport the printing paper, and a front part that applies pressure by sandwiching the printing paper between a roller and a pressing means. In a paper conveyance device equipped with a back tension roller mechanism that does not rotate in the paper conveyance direction but rotates only during reverse conveyance, the conveyance speed of the roller is slightly faster than the conveyance speed of the tractor. A paper conveyance device characterized by comprising a pressure variable means arranged so that the pressure force of the pressure means can be varied in the paper conveyance direction and in the reverse direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7877186A JPS62234966A (en) | 1986-04-04 | 1986-04-04 | Paper feed apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7877186A JPS62234966A (en) | 1986-04-04 | 1986-04-04 | Paper feed apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62234966A true JPS62234966A (en) | 1987-10-15 |
Family
ID=13671166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7877186A Pending JPS62234966A (en) | 1986-04-04 | 1986-04-04 | Paper feed apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62234966A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02135251U (en) * | 1989-04-17 | 1990-11-09 | ||
US5078519A (en) * | 1987-02-18 | 1992-01-07 | Matsushita Electric Industrial, Co., Ltd. | Printer with two-stage skew adjustment |
-
1986
- 1986-04-04 JP JP7877186A patent/JPS62234966A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5078519A (en) * | 1987-02-18 | 1992-01-07 | Matsushita Electric Industrial, Co., Ltd. | Printer with two-stage skew adjustment |
JPH02135251U (en) * | 1989-04-17 | 1990-11-09 |
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