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JP2804407B2 - Paper transport device - Google Patents

Paper transport device

Info

Publication number
JP2804407B2
JP2804407B2 JP4144499A JP14449992A JP2804407B2 JP 2804407 B2 JP2804407 B2 JP 2804407B2 JP 4144499 A JP4144499 A JP 4144499A JP 14449992 A JP14449992 A JP 14449992A JP 2804407 B2 JP2804407 B2 JP 2804407B2
Authority
JP
Japan
Prior art keywords
unit
continuous paper
transfer
paper
transfer unit
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 - Fee Related
Application number
JP4144499A
Other languages
Japanese (ja)
Other versions
JPH05338863A (en
Inventor
誠 井上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4144499A priority Critical patent/JP2804407B2/en
Publication of JPH05338863A publication Critical patent/JPH05338863A/en
Application granted granted Critical
Publication of JP2804407B2 publication Critical patent/JP2804407B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Facsimiles In General (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、プリンタ、複写機、フ
ァクシミリ装置等の画像形成装置に用いられる用紙搬送
装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet conveying device used for an image forming apparatus such as a printer, a copying machine, a facsimile machine and the like.

【0002】[0002]

【従来の技術】例えば図4の斜視図に示すように、従来
のプリンタ、複写機、ファクシミリ装置等の画像形成装
置として、表面にトナー画像が形成される感光体(また
は転写体)106の下方に転写器102を配置し、感光
体(または転写体)106と転写器102との間に連続
用紙搬送装置の搬送部103によって連続用紙101を
送り込み、感光体(または転写体)106から連続用紙
101にトナー画像を転写させた後、連続用紙101を
用紙搬送装置のサクションユニット104によって定着
器に搬送するように構成するものがある。
2. Description of the Related Art As shown in a perspective view of FIG. 4, for example, as a conventional image forming apparatus such as a printer, a copying machine, a facsimile machine, etc., a photoconductor (or transfer body) 106 on which a toner image is formed is formed. The continuous paper 101 is fed between the photoconductor (or transfer body) 106 and the transfer unit 102 by the transport unit 103 of the continuous paper transport device. After the toner image is transferred to the paper 101, the continuous paper 101 may be transported to a fixing device by a suction unit 104 of the paper transport device.

【0003】上記サクションユニット104は、連続用
紙101の搬送経路の下側に配置される搬送ベルト10
4aと連続用紙101を搬送ベルト104aに圧着させ
るために連続用紙101の下側のエアを吸引するエア吸
引装置104bとを備え、その排風は機内の適当な空間
を経て機外に放出されている。
[0003] The suction unit 104 is provided with a transport belt 10 disposed below a transport path of the continuous paper 101.
4a and an air suction device 104b for sucking air below the continuous paper 101 in order to press the continuous paper 101 against the transport belt 104a. I have.

【0004】[0004]

【発明が解決しようとする課題】ところで、感光体(ま
たは転写体)106と転写器102との間には、転写効
率の低下を防止するとともに、連続用紙101が通り易
いようにするため、連続用紙101を案内するガイドを
設けることができない。
By the way, between the photoreceptor (or transfer body) 106 and the transfer unit 102, a continuous transfer paper 101 is formed in order to prevent a decrease in transfer efficiency and to make the continuous paper 101 easily pass. A guide for guiding the paper 101 cannot be provided.

【0005】このため、例えば連続用紙の自動装填時な
ど、感光体(または転写体)106が帯電していない時
に連続用紙101が転写器2の上側に送り込まれると、
連続用紙101が感光体(または転写体)106に吸引
されないので、連続用紙101の先端が転写器102内
に垂れ下がって転写器102に引っ掛かり、ジャムを発
生するおそれがある。
For this reason, when the continuous paper 101 is fed to the upper side of the transfer unit 2 when the photosensitive member (or the transfer body) 106 is not charged, for example, during automatic loading of the continuous paper,
Since the continuous paper 101 is not sucked by the photoconductor (or transfer body) 106, the leading end of the continuous paper 101 may hang down in the transfer device 102 and be caught by the transfer device 102, which may cause a jam.

【0006】本発明は、上記の事情を鑑みてなされたも
のであり、連続用紙の装填時に転写器でジャムが発生す
ることを防止できるようにした用紙搬送装置を提供する
ことを目的とするものである。
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a paper transport apparatus capable of preventing a transfer device from being jammed when continuous paper is loaded. It is.

【0007】[0007]

【課題を解決するための手段】本発明は、例えば図1に
示すように、連続用紙1を転写器2の上側に供給する搬
送部3と、転写器2の上側を通過した連続用紙1を搬送
するサクションユニット4とを備える用紙搬送装置にお
いて、上記の目的を達成するため、上記サクションユニ
ット4から排出されるエアを転写器2の下方から上方に
流れるように案内するガイド5を設けたことを特徴とす
る。
According to the present invention, as shown in FIG. 1, for example, as shown in FIG. 1, a conveying section 3 for supplying a continuous sheet 1 above a transfer unit 2 and a continuous sheet 1 passing above the transfer unit 2 are used. In order to achieve the above-mentioned object, in a paper transport apparatus having a suction unit 4 for transporting, a guide 5 for guiding air discharged from the suction unit 4 to flow upward from below the transfer device 2 is provided. It is characterized by.

【0008】[0008]

【作用】本発明においては、サクションユニット4から
排出されるエアがガイド5に案内されて転写器2の下方
から上方に流れることにより、転写器2の上側に送りこ
まれる連続用紙1の先端を転写器2の上方に押し上げ、
連続用紙1の先端が転写器2内に垂れ下がることを防止
する。
In the present invention, the air discharged from the suction unit 4 is guided by the guide 5 and flows upward from below the transfer unit 2 to transfer the leading end of the continuous paper 1 sent above the transfer unit 2. Push it up above the container 2,
This prevents the leading edge of the continuous paper 1 from hanging down in the transfer device 2.

【0009】[0009]

【実施例】本発明の一実施例に係るプリンタの用紙搬送
装置を図1の縦断側面図に基づいて具体的に説明すれ
ば、以下の通りである。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a detailed description of a paper transport device for a printer according to an embodiment of the present invention, based on a vertical sectional side view of FIG.

【0010】この用紙搬送装置は、感光体ドラム6とそ
の周面下部に対向させた転写器2との間に連続用紙1を
送り込む搬送部3と、感光体ドラム6と転写器2との間
を通過した連続用紙1を定着器に送り出すサクションユ
ニット4とを備える。
The paper transport device includes a transport unit 3 for feeding continuous paper 1 between a photosensitive drum 6 and a transfer unit 2 opposed to a lower portion of a peripheral surface of the photosensitive drum 6, and a transport unit 3 between the photosensitive drum 6 and the transfer unit 2. And a suction unit 4 for feeding the continuous paper 1 passing through the fixing unit to the fixing unit.

【0011】なお、このプリンタでは、連続用紙1を所
定の用紙供給部に装填し、連続用紙1の先端を所定の用
紙セット部にセットすると、自動的に搬送部3まで送り
こまれるようにしている。
In this printer, when the continuous paper 1 is loaded into a predetermined paper supply unit and the leading end of the continuous paper 1 is set in a predetermined paper setting unit, the continuous paper 1 is automatically fed to the transport unit 3. .

【0012】また、搬送部3と転写器2との間には連続
用紙1の先端を感光体ドラム6と転写器2との間に案内
するガイド装置7が設けられ、転写器2とサクションユ
ニット4との間には、連続用紙1を感光体ドラム6から
分離させる分離チャージャ8と、感光体ドラム6から分
離された連続用紙1及びこれに転写されたトナー画像を
除電するACチャージャからなる除電器9とが配置され
る。
A guide device 7 for guiding the leading end of the continuous paper 1 between the photosensitive drum 6 and the transfer unit 2 is provided between the transfer unit 3 and the transfer unit 2, and the transfer unit 2 and the suction unit. 4, there is provided a separation charger 8 for separating the continuous paper 1 from the photosensitive drum 6, and an AC charger for removing the continuous paper 1 separated from the photosensitive drum 6 and the toner image transferred thereto. An electric device 9 is arranged.

【0013】上記搬送部3は、外周面に所定の間隔を置
いてトラクションピンを突設させた搬送ベルト3aと連
続用紙1の浮き上がりを防止するガイド3bとを備え、
連続用紙1の両端部に対応して位置合わせした搬送ベル
ト3aのトラクションピンを連続用紙1の両端部に所定
の間隔を置いて形成した孔に突入させて搬送ベルト3a
を回動させることにより連続用紙1を転写器2の上側に
送り出すようにしている。
The transport section 3 includes a transport belt 3a having traction pins projecting at predetermined intervals on an outer peripheral surface thereof, and a guide 3b for preventing the continuous paper 1 from rising.
The traction pins of the conveyor belt 3a positioned corresponding to both ends of the continuous paper 1 are inserted into holes formed at predetermined intervals on both ends of the continuous paper 1 so that the conveyor belt 3a
Is rotated so that the continuous paper 1 is sent out above the transfer device 2.

【0014】転写器2は、図2の拡大縦断側面図に示す
ように、放電ワイヤと呼ばれる線状の放電電極2aと、
放電電極2aの両横側及び下側に対向して配置される上
面が開放された溝型の対向電極2bとを備え、この対向
電極2bの底面に適当な間隔を置いて通気孔2cが形成
される。
As shown in the enlarged vertical sectional side view of FIG. 2, the transfer unit 2 includes a linear discharge electrode 2a called a discharge wire,
A groove-shaped counter electrode 2b having an open upper surface disposed on both sides and a lower side of the discharge electrode 2a, and a ventilation hole 2c formed at an appropriate interval on the bottom surface of the counter electrode 2b. Is done.

【0015】上記サクションユニット4は、連続用紙1
の搬送経路の下側に配置される搬送ベルト4aと連続用
紙1を搬送ベルト4aに圧着させるために連続用紙1の
下側のエアを吸引するエア吸引装置4bとを備える。
[0015] The suction unit 4 includes
And an air suction device 4b for sucking air below the continuous paper 1 in order to press the continuous paper 1 against the transport belt 4a.

【0016】エア吸引装置4bは、搬送ベルト4aの回
動経路上部の下側に配置される上面板41と吸引ファン
42とを備え、上面板41には搬送ベルト4aの間で搬
送方向に適当な間隔を置いて多数の吸気口41aが貫設
される。
The air suction device 4b includes an upper surface plate 41 and a suction fan 42 disposed below the upper part of the rotation path of the conveyor belt 4a. A large number of air inlets 41a are provided at appropriate intervals.

【0017】吸引ファン42は、図3の縦断側面図に示
すように、円筒形の通風路42aを有する外枠42b
と、通風路42a内に配置されたファン42c及びモー
タ42dとを有し、上記モータ42dでファン42cを
回転させることにより、通風路42aを上から下に吹き
抜ける風を起こすようにしている。
As shown in the vertical side view of FIG. 3, the suction fan 42 has an outer frame 42b having a cylindrical ventilation passage 42a.
And a fan 42c and a motor 42d arranged in the ventilation passage 42a. By rotating the fan 42c by the motor 42d, a wind blowing through the ventilation passage 42a from above to below is generated.

【0018】サクションユニット4の下方には、転写器
2側に片寄せて吸引ファン42の排風を転写器2の下方
に導き、転写器2の下方から上方に向かうように案内す
る逆ヘ字形板状のガイド5が設けられる。
Below the suction unit 4, the air discharged from the suction fan 42 is biased toward the transfer unit 2 to guide the exhaust air from the suction unit 42 below the transfer unit 2, and is guided upward from below the transfer unit 2. A plate-like guide 5 is provided.

【0019】このプリンタの用紙搬送装置においては、
搬送部3とサクションユニット4とは同時に作動するよ
うにしてあり、連続用紙1の先端が搬送部3から転写器
2の上側に送り出されるとサクションユニット4の吸引
ファン42から排出されるエアがガイド5に案内されて
転写器2の下方から上方に吹き抜け、連続用紙1の先端
が転写器2内に垂れ下がることを防止する。これによ
り、連続用紙1の先端は感光体ドラム6側に押さえ付け
られながら転写器2の上側を通過し、転写器2でのジャ
ムの発生が確実に防止されることになる。
In the paper transport device of this printer,
The transport unit 3 and the suction unit 4 are operated at the same time, and when the leading end of the continuous paper 1 is sent out from the transport unit 3 to above the transfer unit 2, the air discharged from the suction fan 42 of the suction unit 4 is guided. 5 prevents the leading edge of the continuous paper 1 from hanging down into the transfer unit 2 by blowing upward from below the transfer unit 2. As a result, the leading end of the continuous paper 1 passes over the transfer unit 2 while being pressed against the photosensitive drum 6, so that the occurrence of a jam in the transfer unit 2 is reliably prevented.

【0020】この実施例では、転写器2の対向電極2b
の底面に通気孔2cを形成しているので、吸引ファン4
2の排風の一部分が転写器2内を下から上に向かって流
れることになる。したがって、連続用紙1の先端が転写
器2の真上を通過する時に吸引ファン42の排風の一部
分によって連続用紙1の先端を上方に吹き上げることが
でき、連続用紙1の先端が転写器2内に垂れ下がること
を一層確実に防止でき、転写器2でのジャム発生を一層
確実に防止できる。
In this embodiment, the counter electrode 2b of the transfer device 2
Is formed on the bottom surface of the suction fan 4c.
Part of the exhaust air of the transfer device 2 flows upward from below in the transfer device 2. Therefore, when the leading edge of the continuous paper 1 passes directly above the transfer device 2, the leading edge of the continuous paper 1 can be blown up by a part of the exhaust air of the suction fan 42, and the leading edge of the continuous paper 1 Can be prevented more reliably, and the occurrence of a jam in the transfer device 2 can be more reliably prevented.

【0021】[0021]

【発明の効果】以上に説明したように、本発明の用紙搬
送装置によれば、従来例にガイドを付加するだけの簡単
な構成で、サクションユニットの排風を有効利用して、
連続用紙の装填時に転写器でジャムが発生することを防
止できる。
As described above, according to the paper conveying apparatus of the present invention, the air exhaustion of the suction unit can be effectively utilized by a simple configuration in which a guide is added to the conventional example.
It is possible to prevent the transfer device from being jammed when the continuous paper is loaded.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の縦断側面図である。FIG. 1 is a vertical sectional side view of the present invention.

【図2】本発明の転写器の縦断側面図である。FIG. 2 is a vertical sectional side view of the transfer device of the present invention.

【図3】本発明の吸引ファンの縦断側面図である。FIG. 3 is a vertical sectional side view of the suction fan of the present invention.

【図4】従来例の斜視図である。FIG. 4 is a perspective view of a conventional example.

【符号の説明】[Explanation of symbols]

1 連続用紙 2 転写器 2a 放電電極 2b 対向電極 2c 通気孔 3 搬送部 4 サンクションユニット 5 ガイド DESCRIPTION OF SYMBOLS 1 Continuous paper 2 Transfer device 2a Discharge electrode 2b Counter electrode 2c Ventilation hole 3 Transport part 4 Sanction unit 5 Guide

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6,DB名) B65H 7/00 B65H 5/22 B65H 29/24 G03G 15/00 518──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) B65H 7/00 B65H 5/22 B65H 29/24 G03G 15/00 518

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 連続用紙(1) を転写器(2) の上側に供給
する搬送部(3) と、転写器(2) の上側を通過した連続用
紙(1) を搬送するサクションユニット(4) とを備える用
紙搬送装置において、 上記サクションユニット(4) から排出されるエアを転写
器(2) の下方から上方に流れるように案内するガイド
(5) を設けたことを特徴とする用紙搬送装置。
A transport unit (3) for supplying continuous paper (1) above a transfer unit (2), and a suction unit (4) for transporting continuous paper (1) passing above the transfer unit (2). And a guide for guiding the air discharged from the suction unit (4) to flow upward from below the transfer unit (2).
(5) A paper transport device characterized by having (5).
【請求項2】 上記転写器(2) が線状の放電電極(2a)
と、放電電極(2a)の両横側及び下側に対向して配置され
る上面が開放された溝型の対向電極(2b)とを備え、上記
対向電極(2b)の底面に通気孔(2c)が形成される請求項1
に記載の用紙搬送装置。
2. The transfer device (2) is a linear discharge electrode (2a).
And a groove-shaped counter electrode (2b) having an open upper surface disposed opposite to both lateral sides and a lower side of the discharge electrode (2a), and a vent hole ( 2. The method of claim 1, wherein 2c) is formed.
A paper transport device according to claim 1.
JP4144499A 1992-06-04 1992-06-04 Paper transport device Expired - Fee Related JP2804407B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4144499A JP2804407B2 (en) 1992-06-04 1992-06-04 Paper transport device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4144499A JP2804407B2 (en) 1992-06-04 1992-06-04 Paper transport device

Publications (2)

Publication Number Publication Date
JPH05338863A JPH05338863A (en) 1993-12-21
JP2804407B2 true JP2804407B2 (en) 1998-09-24

Family

ID=15363782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4144499A Expired - Fee Related JP2804407B2 (en) 1992-06-04 1992-06-04 Paper transport device

Country Status (1)

Country Link
JP (1) JP2804407B2 (en)

Also Published As

Publication number Publication date
JPH05338863A (en) 1993-12-21

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