JPH082765A - Curl removing device for paper - Google Patents

Curl removing device for paper

Info

Publication number
JPH082765A
JPH082765A JP13314294A JP13314294A JPH082765A JP H082765 A JPH082765 A JP H082765A JP 13314294 A JP13314294 A JP 13314294A JP 13314294 A JP13314294 A JP 13314294A JP H082765 A JPH082765 A JP H082765A
Authority
JP
Japan
Prior art keywords
curl
sheet
paper
removing roller
curl removing
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
Application number
JP13314294A
Other languages
Japanese (ja)
Inventor
Makoto Yamada
誠 山田
Tomohisa Higuchi
智久 樋口
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.)
Brother Industries Ltd
Original Assignee
Brother Industries 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 Brother Industries Ltd filed Critical Brother Industries Ltd
Priority to JP13314294A priority Critical patent/JPH082765A/en
Publication of JPH082765A publication Critical patent/JPH082765A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent forming of a curving habit at stop time while surely removing a curl when roll-shaped continuous paper in a facsimile device is unwound. CONSTITUTION:A planet gear 31, meshed with a gear 29 forwardly rotating a platen, is meshed with a partial gear part 28 of a turn arm 26 in a condition that the gear 31 is turnably supported on a turn connecting lever 30, and a curl removing roller, when the turn arm 26 is turned so as to approach a correction part of a curl correcting member, holds a position by engaging a lock lever 37 with the curl removing roller. Almost simultaneously with pressing the turn connecting lever 30 by a point end of arm operating lever 32, meshing the planet gear 31 with the partial gear part 28 is released. When the platen is reversely rotated, by a kick pawl 40 of a star wheel 41, the lock lever 37 is forced to move so that it is dislocated from the curl removing roller through a protrusion 43 of a turn unit 42.

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、ファクシミリ、複写
機、プリンタ等の画像形成装置において、ロール状に巻
いた用紙を巻き戻しつつ画像形成するに際しての、当該
用紙の巻き癖(以下、カールという)を除去するカール
除去装置の構造に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a facsimile machine, a copying machine, a printer, or the like, which has a curl (hereinafter, referred to as a curl) when the image is formed while rewinding the rolled paper. ) Is related to the structure of a curl removing device.

【0002】[0002]

【従来の技術】従来、この種の連続状の用紙のカール除
去装置として、例えば、本出願人が先に提案した特願平
5−238617号に示す装置がある。このカール除去
装置は、ファクシミリの本体ケースに形成された上向き
開放略半円筒状の用紙トレイの上向き後縁から画像形成
部迄の用紙の搬送経路中に設けるものであって、1つの
カール除去ローラとこれに接近させて配置する側面視略
S字状のカール矯正板とは位置固定的なものであり、カ
ール除去ローラとカール矯正板との側面視略S字状の搬
送経路間に前記連続状の用紙を通過させて、カールを除
去しようとするものである。
2. Description of the Related Art Conventionally, as such a continuous paper curl removing device, there is, for example, a device disclosed in Japanese Patent Application No. 5-238617 previously proposed by the present applicant. This curl removing device is provided in the sheet conveying path from the upward rear edge of the upward-opening semi-cylindrical sheet tray formed in the main body case of the facsimile to the image forming unit. And the curl straightening plate having a substantially S-shape in side view, which is arranged close to the curl correcting plate, is position-fixed, and the continuity is provided between the curl removing roller and the curl straightening plate between the conveyance paths having a substantially S-shape in side view. It is intended to remove curl by passing a sheet of paper.

【0003】また、特開平3−61260号公報に示す
装置においては、搬送中の連続状の用紙のバックテンシ
ョンの大小により、カール除去ローラに対するカール矯
正部材の接近程度を変更調節する構成のものが提案され
ている。
Further, the apparatus disclosed in Japanese Patent Laid-Open No. 3-61260 has a structure in which the degree of proximity of the curl straightening member to the curl removing roller is changed and adjusted depending on the back tension of the continuous paper being conveyed. Proposed.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、前者の
装置においては、例えば、ファクシミリにおける受信待
機中では、連続状の用紙は前記カール除去ローラとカー
ル矯正板との側面視略S字状の搬送経路で挟まれたまま
の状態で長時間停止しているので、そのS字状の搬送経
路の屈曲癖が用紙についてしまい。次の受信により画像
形成された用紙の出力時には当該連続状の用紙の先端部
が前記S字状に曲がったままとなるという問題があっ
た。
However, in the former device, for example, during reception standby in a facsimile, a continuous sheet of paper has a substantially S-shaped conveyance path in a side view between the curl removing roller and the curl correcting plate. Since it is stopped for a long time in the state of being sandwiched by, the bending tendency of the S-shaped conveyance path is stuck to the paper. There is a problem that the leading end of the continuous sheet remains bent in the S-shape when the sheet on which an image is formed by the next reception is output.

【0005】また、連続状の用紙を前記略S字状の搬送
経路に通す作業を容易にするには、カール矯正板を本体
に対して開閉可能に回動するカバー体の下面に設ける一
方、カール除去ローラを本体ケース側に設けておく必要
があり、しかも、カバー体の回動時にカール除去ローラ
に対してカール矯正板が干渉しないように設定する必要
があるため、前記搬送経路の略S字状の湾曲率が大きく
なり易く、カール除去作用が不十分となるという問題が
あった。
Further, in order to facilitate the work of passing the continuous paper through the substantially S-shaped conveyance path, a curl straightening plate is provided on the lower surface of the cover body which is openably and closably rotatable with respect to the main body. Since it is necessary to provide the curl removing roller on the main body case side, and further, it is necessary to set so that the curl correcting plate does not interfere with the curl removing roller when the cover body is rotated. There is a problem in that the curving rate of the character is likely to be large, and the curl removing action is insufficient.

【0006】また後者の装置によれば、連続状の用紙の
搬送停止中は、前記バックテンションが小さくなるの
で、前記の屈曲癖が付くのが緩和されるが、完全に無く
なるものではないという欠点がある。しかも、連続状の
用紙のバックテンションという不安定な要因をもとにし
てカール矯正部材の位置を決定するので、連続状の用紙
の紙厚さや腰の強さ等の紙の種類、用紙のロール径等の
条件が変動すると、カール除去作用が上手く機能しない
という問題があった。
Further, according to the latter device, the back tension is reduced while the continuous sheet conveyance is stopped, so that the bending tendency is alleviated, but it is not completely eliminated. There is. In addition, since the position of the curl straightening member is determined based on an unstable factor such as back tension of continuous paper, the type of paper such as paper thickness and stiffness of continuous paper, roll of paper, etc. When the conditions such as the diameter change, there is a problem that the curl removing function does not work well.

【0007】本発明は、前記従来の問題を解決すべくな
されたものであって、カール除去作用が充分に達成でき
るカール除去装置を提供することを第1の目的とし、第
2の目的は、用紙の停止中にカール除去装置で湾曲癖を
つけないようすることができるカール除去装置を提供す
ることである。
The present invention has been made to solve the above-mentioned conventional problems, and a first object of the present invention is to provide a curl removing device capable of sufficiently achieving a curl removing action, and a second object thereof is to provide: It is an object of the present invention to provide a curl removing device capable of preventing the curl removing device from curving while the paper is stopped.

【0008】[0008]

【課題を解決するための手段】前記目的を達成するた
め、請求項1記載の発明の用紙のカール除去装置は、用
紙を搬送する搬送手段と、搬送される用紙を屈曲案内す
るカール矯正部材と、該カール矯正部材に用紙を挟むカ
ール除去ローラとを備えた用紙のカール除去装置であっ
て、カール除去ローラが取付けられた回動アームの基端
に部分歯車部を形成し、搬送手段には、用紙を正方向に
搬送するように回転するとき、回動連結杆を介して取付
けられた遊星歯車を、部分歯車部に噛み合うように設け
る一方、この遊星歯車の所定角度の正回転にて、当該遊
星歯車と部分歯車部との噛み合いを解除する噛み合い解
除手段と、カール除去ローラがカール矯正部材に接近し
た位置に姿勢を保持する係合手段とを設けたものであ
る。
In order to achieve the above-mentioned object, a sheet curl removing device according to a first aspect of the present invention comprises a conveying means for conveying the sheet and a curl correcting member for bending and guiding the conveyed sheet. A decurling device for a sheet, comprising: a decurling roller for sandwiching a sheet between the curl correcting members, wherein a partial gear portion is formed at a base end of a rotating arm to which the decurling roller is attached, , When the paper is rotated so as to be conveyed in the forward direction, the planetary gear attached through the rotary connecting rod is provided so as to mesh with the partial gear portion, while the planetary gear is rotated forward by a predetermined angle. An engagement releasing means for releasing the engagement between the planetary gear and the partial gear portion and an engaging means for holding the posture of the curl removing roller in a position close to the curl correcting member are provided.

【0009】また、請求項2に記載の発明の用紙のカー
ル除去装置は、請求項1の構成の他に、用紙の搬送停止
時には、カール除去ローラがカール矯正部材から離反す
るように前記係合手段を移動させる係合解除手段を設け
たものである。
Further, in addition to the configuration of claim 1, the paper curl removing device of the invention described in claim 2 is such that, when the conveyance of the paper is stopped, the curl removing roller is separated from the curl correcting member. An engagement releasing means for moving the means is provided.

【0010】[0010]

【実施例】次に、本発明を具体化した実施例について説
明すると、図1は本発明におけるファクシミリ装置の側
断面図で、図2はカール除去装置の要部側断面図であ
る。図において、ファクシミリ装置の本体ケース1内の
ロール紙トレイ15上に感熱紙等のロール状に巻かれた
連続用紙14が収納されており、その上面を着脱自在な
カバー体2で覆う。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described. FIG. 1 is a side sectional view of a facsimile apparatus according to the present invention, and FIG. In the figure, continuous paper 14 wound in a roll shape such as thermal paper is stored on a roll paper tray 15 in a main body case 1 of a facsimile apparatus, and the upper surface thereof is covered with a removable cover body 2.

【0011】カバー体2と前カバー3との間に傾斜状に
配置された原稿トレイ4に、送信すべき原稿用紙(図示
せず)を送信面が下向きになるように搭載し、操作パネ
ル部13の送信ボタンを押下すると、送給口近傍の原稿
分離送給機構5にて1枚ずつに分離される。送りローラ
対7,8にて送給下流側に送られた原稿用紙は、画像読
み取り部6における光源10からの光が照射され、その
反射光が2枚のミラー11a,11bを介してCCDか
らなる固体撮像素子等の撮像手段12に画像データが入
力されるように読み取られ、図示しない送信部を介して
画像が送信される。読み取り後の原稿用紙は排紙ローラ
9から機外に排出される。
A document tray (not shown) to be transmitted is mounted on a document tray 4 arranged in an inclined shape between the cover body 2 and the front cover 3 so that the transmission surface faces downward, and an operation panel section is provided. When the send button 13 is pressed, the document separating and feeding mechanism 5 near the feeding port separates the sheets one by one. The document sheet sent to the downstream side by the pair of feed rollers 7 and 8 is irradiated with the light from the light source 10 in the image reading unit 6, and the reflected light is emitted from the CCD through the two mirrors 11a and 11b. The image data is read so as to be input to the image pickup means 12 such as the solid-state image pickup element, and the image is transmitted via the transmission unit (not shown). The read original sheet is ejected from the ejection roller 9 to the outside of the machine.

【0012】画像データの受信に際しては、前記ロール
紙トレイ15上のロール状の連続用紙14が引き出さ
れ、後に詳述するカール除去装置16における丸棒状の
カール除去ローラ17と、側面視略S字状の矯正部18
aを備えたカール矯正部材18との間を通過してカール
除去された連続用紙14がプラテン19とサーマルヘッ
ド20との間を通過するとき画像形成される。この後、
連続用紙14は、カッター装置21を通過するとき所定
の長さに切断され、排紙口22を通過して排紙トレイ2
3に受けられる。
At the time of receiving the image data, the roll-shaped continuous paper 14 on the roll paper tray 15 is pulled out, and a round bar-shaped curl removing roller 17 in a curl removing device 16 described later in detail and a substantially S-shape in side view. Correction part 18
An image is formed when the curl-removed continuous paper 14 passing between the curl straightening member 18 having a and the curl straightening member 18 passes between the platen 19 and the thermal head 20. After this,
The continuous paper 14 is cut into a predetermined length when passing through the cutter device 21, passes through the paper ejection port 22, and passes through the paper ejection tray 2
Received by 3.

【0013】カール矯正部材18は前記カバー体2の下
面等に固定され、図2に示す如く、矯正部18aの上部
は後述するカール除去ローラ17が嵌まり込むように側
面視略S字状に形成されており、該矯正部18aに続い
てプラテン19の上面に連続用紙14を案内するガイド
部18bと、サーマルヘッド20をバネ(図示せず)を
介してプラテン19上面に押圧するための支持部18c
とが一体的に形成されており、カール矯正部材18はプ
ラテン19の長さと略同じ幅寸法を有するものとする。
The curl straightening member 18 is fixed to the lower surface of the cover body 2 and the like, and as shown in FIG. 2, the upper portion of the straightening portion 18a is formed into a substantially S-shape in a side view so that a curl removing roller 17 to be described later fits therein. A guide part 18b for guiding the continuous paper 14 to the upper surface of the platen 19 following the correction part 18a, and a support for pressing the thermal head 20 against the upper surface of the platen 19 via a spring (not shown). Section 18c
Are integrally formed with each other, and the curl correcting member 18 has substantially the same width dimension as the length of the platen 19.

【0014】カール除去ローラ17は、図3に示すよう
に、前記プラテン19の枢軸24の軸線と平行な支軸2
5に回動自在に軸支された左右一対の回動アーム26の
長溝27に摺動自在に支持されている。この各回動アー
ム26にはその基端部に部分歯車部28が形成されてい
る。他方、プラテン19を矢印A方向に回転させて連続
用紙14を搬送させるための搬送手段として、図示しな
い駆動モータの回転力を伝達するためのギヤ群を備え、
この搬送手段の一部としてのギヤ29が、プラテン19
の枢軸24の一端に固着されている。また、前記枢軸2
4の一端で前記ギヤ29に隣接する箇所に回動連結杆3
0の基端を回動自在に枢支し、該回動連結杆30の先端
には、前記ギヤ29に常時噛み合い、且つ前記部分歯車
部28に選択的に噛み合う遊星歯車31が回転自在に支
持されている。従って、プラテン19ひいてはギヤ29
が矢印A方向に回転するときには、ギヤ29の外周に沿
って図3の一点鎖線の状態から二点鎖線の状態に回動す
るように回動連結杆30が矢印A方向に正回転すると共
に、遊星歯車31は矢印B方向に回転(自転)する。そ
して、回動アーム26における部分歯車部28に遊星歯
車31が噛み合うと、回動アーム26を矢印C方向(矢
印A方向と同方向)に回動させ、カール除去ローラ17
はカール矯正部材18における矯正部18aに接近する
ことになる。
As shown in FIG. 3, the decurling roller 17 has a support shaft 2 parallel to the axis of the pivot shaft 24 of the platen 19.
A pair of left and right rotating arms 26 rotatably supported by the shaft 5 are slidably supported in long grooves 27. A partial gear portion 28 is formed at the base end of each of the rotating arms 26. On the other hand, a gear group for transmitting the rotational force of a drive motor (not shown) is provided as a transporting unit for transporting the continuous paper 14 by rotating the platen 19 in the direction of arrow A,
The gear 29 as a part of this conveying means is
Is fixed to one end of the pivot 24 of the. Also, the pivot 2
4 at one end of the rotary connecting rod 3 adjacent to the gear 29.
A base end of 0 is rotatably supported, and a planetary gear 31 that constantly meshes with the gear 29 and selectively meshes with the partial gear portion 28 is rotatably supported at the tip of the rotary connecting rod 30. Has been done. Therefore, the platen 19 and then the gear 29
When rotating in the direction of arrow A, the rotary connecting rod 30 rotates forward in the direction of arrow A so as to rotate from the state of one-dot chain line in FIG. The planetary gear 31 rotates (rotates) in the direction of arrow B. When the planetary gear 31 meshes with the partial gear portion 28 of the rotating arm 26, the rotating arm 26 is rotated in the arrow C direction (the same direction as the arrow A direction), and the curl removing roller 17 is rotated.
Will approach the straightening portion 18a of the curl straightening member 18.

【0015】また、回動連結杆30には、遊星歯車31
と部分歯車部28との係合解除するのに用いられる蹴り
突起35が側面に突出形成されている。次に、カール除
去ローラ17がカール矯正部材18の矯正部18aに接
近した状態でカール除去ローラ17をその位置に保持す
べく回動アーム26の回動姿勢を保持するための係合手
段について、図3〜図6を参照して説明する。
A planetary gear 31 is attached to the rotary connecting rod 30.
A kick projection 35 used to release the engagement between the partial gear portion 28 and the partial gear portion 28 is formed on the side surface. Next, with respect to the engaging means for holding the rotation posture of the rotating arm 26 in order to hold the curl removing roller 17 in that position while the curl removing roller 17 is close to the correction portion 18a of the curl correcting member 18, This will be described with reference to FIGS.

【0016】前記カール矯正部材18の左右外側面に
は、支持ピン36を介して回動自在なロック杆37が配
置されており、このロック杆37の長手方向中途部の側
面に突出した第1係合ピン38(図5参照)がカール矯
正部材18の左右側板18dに穿設された円弧状の規制
溝孔39に嵌まって適宜角度のみ回動可能となるように
構成されている。前記回動アーム26が矢印C方向に回
動してカール除去ローラ17を持ち上げると、カール除
去ローラ17は作動杆37の先端を蹴り(図4の状態参
照)、次いで、図6に示すように、当該作動杆37の先
端部に設けた鉤爪37aにてカール除去ローラ17を抱
え込み、このカール除去ローラ17がカール矯正部材1
8における矯正部18aに接近した位置に保持するよう
に構成されている。
A lock rod 37, which is rotatable via a support pin 36, is disposed on the left and right outer side surfaces of the curl correcting member 18, and the first lock rod 37 protrudes to the side surface of the lock rod 37 in the middle of the longitudinal direction. The engagement pin 38 (see FIG. 5) is configured to fit in the arcuate restriction slot 39 formed in the left and right side plates 18d of the curl correcting member 18 and to be rotatable only at an appropriate angle. When the rotating arm 26 rotates in the direction of the arrow C and lifts the curl removing roller 17, the curl removing roller 17 kicks the tip of the operating rod 37 (see the state of FIG. 4), and then, as shown in FIG. The curl removing roller 17 is held by the claw 37a provided at the tip of the operating rod 37, and the curl removing roller 17 is held by the curl correcting member 1
8 is configured to be held at a position close to the correction portion 18a.

【0017】次に、前記遊星歯車31を所定角度だけ正
回転するとき、当該遊星歯車と部分歯車部28との噛み
合いを解除するための噛み合い解除手段について図3〜
図6を参照して説明する。前記支軸25に回動アーム2
6と同心軸状に作動杆32が回動可能に設けられてお
り、作動杆32の側面から突出する係合ピン33は前記
回動アーム26に円弧状に形成された規制溝34に嵌ま
り、作動杆32が回動アーム26に対して所定角度のみ
相対的に回動可能となるようになっている。
Next, when the planetary gear 31 is rotated forward by a predetermined angle, the meshing releasing means for releasing the meshing between the planetary gear 31 and the partial gear portion 28 will be described with reference to FIGS.
This will be described with reference to FIG. The pivot arm 2 is attached to the support shaft 25.
6, an operating rod 32 is rotatably provided concentrically with the operating rod 32, and an engaging pin 33 projecting from a side surface of the operating rod 32 is fitted in a restriction groove 34 formed in the rotating arm 26 in an arc shape. The operating rod 32 can be rotated relative to the rotating arm 26 only by a predetermined angle.

【0018】また、回動アーム26と作動杆32との間
には、スプリング48が掛けられており、作動杆32を
常に反時計方向に付勢している。更に、係合ピン33と
規制溝34との嵌合移動範囲は、遊星歯車31と部分歯
車部28との係合が噛み合った後、外れる状態でも規制
溝34の終端に係合ピン33が衝突しないように定めら
れている。
A spring 48 is hung between the rotary arm 26 and the operating rod 32 to constantly urge the operating rod 32 counterclockwise. Further, the fitting movement range of the engagement pin 33 and the restriction groove 34 is such that the engagement pin 33 collides with the end of the restriction groove 34 even if the engagement gear 33 and the partial gear portion 28 are disengaged after the engagement. It is stipulated not to.

【0019】そして、前記回動連結杆30が図3に示す
状態から図4に示す状態まで回動するとき、途中で当該
回動連結杆30の側面に突出形成された蹴り突起35が
前記作動杆32の先端に当接するが、前記規制溝34と
係合ピン33との嵌合移動範囲だけは、スプリング48
の付勢力に逆らって一旦作動杆32が逃げ回動する。そ
の間も遊星歯車31の回転によって、部分歯車部28を
持つ回動アーム26は回転を続けるが、規制溝34と係
合ピン33との嵌合移動範囲の限度まで移動する前に、
部分歯車部28と遊星歯車31との係合が解除されるよ
うに配置されているため、カール除去ローラ17が所望
の位置に達するころには、部分歯車部28と遊星歯車3
1との係合が外れはじめ、所望の位置を少し過ぎたあた
りでギヤ間の係合が外れる。
When the rotary connecting rod 30 is rotated from the state shown in FIG. 3 to the state shown in FIG. 4, the kicking protrusion 35 formed on the side surface of the rotary connecting rod 30 in the middle thereof is operated. Although it abuts on the tip of the rod 32, only the fitting movement range of the restriction groove 34 and the engagement pin 33 is limited to the spring 48.
The operating rod 32 once escapes and turns against the urging force of. In the meantime, the rotation arm 26 having the partial gear portion 28 continues to rotate due to the rotation of the planetary gear 31, but before moving to the limit of the fitting movement range of the restriction groove 34 and the engagement pin 33,
Since the partial gear portion 28 and the planetary gear 31 are arranged so as to be disengaged from each other, the partial gear portion 28 and the planetary gear 3 are rotated when the decurling roller 17 reaches a desired position.
The disengagement with the gear 1 starts to disengage, and the engagement between the gears disengages just after passing a desired position.

【0020】それと前後して、係合の外れに伴ってスプ
リング48の戻し力が相対的に大きくなり、係合が外れ
ると、スプリング48の力によって、作動杆32の先端
が前記蹴り突起35を押圧し、回動連結杆30を矢印B
方向に押圧し、図6に示すような位置関係で停止する。
なお、このように遊星歯車31は部分歯車部28との噛
み合いが解除された状態で、プラテン19の回転が逆回
転すると、遊星歯車31の回転(自転)にて、図3の実
線状態まで回動連結杆30が逆回動していわゆる初期位
置に戻ることになる。
Before and after that, the returning force of the spring 48 becomes relatively large with the disengagement of the engagement, and when the engagement is disengaged, the tip of the actuating rod 32 causes the kicking protrusion 35 to move by the force of the spring 48. Press and turn the rotation connecting rod 30 with arrow B
It pushes in the direction and stops in the positional relationship as shown in FIG.
In this way, when the planetary gear 31 is disengaged from the partial gear part 28 and the platen 19 rotates in the reverse direction, the planetary gear 31 rotates (rotates) to rotate to the solid line state in FIG. The dynamic connecting rod 30 rotates in the reverse direction and returns to the so-called initial position.

【0021】次に、連続用紙14の記録終了時に、前記
カール除去ローラ17をカール矯正部材18における矯
正部18aから離反するように前記係合手段を移動させ
る係合解除手段について説明する。その第1実施例は、
図3、図5及び図7に示すように、プラテン19の枢軸
24には、円周方向に複数の蹴り爪40が備えられたス
ターホイール41を設け、該スターホイール41をプラ
テン19の枢軸24と一体的に回転するように装着する
一方、前記ロック杆37の支持ピン36には、回動体4
2を回動自在に被嵌し、該回動体42の一端には前記ス
ターホイール41における蹴り爪40に接触可能な突起
体43を設けている。また、回動体42の他端には前記
ロック杆37の一側面に突出するピン44に当接するア
ーム部45を設け、更に、一部にバネ片46を突出させ
ている。この回動体42に突出形成されたバネ片46
は、前記スターホイール41が図3の矢印A方向に回転
してその蹴り爪40が突起体43を蹴って回動体を回動
させるとき、カール矯正部材18の上面等に押圧して一
定以上の回動を規制する。
Next, the engagement releasing means for moving the engaging means so as to separate the curl removing roller 17 from the correction portion 18a of the curl correcting member 18 when the recording of the continuous paper 14 is completed will be described. The first embodiment is
As shown in FIGS. 3, 5 and 7, the pivot 24 of the platen 19 is provided with a star wheel 41 provided with a plurality of kick pawls 40 in the circumferential direction, and the star wheel 41 is attached to the pivot 24 of the platen 19. The lock rod 37 is mounted on the support pin 36 of the lock rod 37 so as to rotate integrally therewith.
2 is rotatably fitted, and at one end of the rotating body 42, a projection 43 that can contact the kick claw 40 of the star wheel 41 is provided. At the other end of the rotating body 42, an arm portion 45 that comes into contact with a pin 44 protruding from one side surface of the lock rod 37 is provided, and a spring piece 46 is made to partially protrude. A spring piece 46 protruding from the rotating body 42
When the star wheel 41 rotates in the direction of arrow A in FIG. 3 and the kicking claw 40 kicks the protrusion 43 to rotate the rotating body, it is pressed against the upper surface of the curl correcting member 18 or the like to a certain degree or more. Restrict rotation.

【0022】そして、プラテン19と共にスターホイー
ル41を適宜逆回転(図7の矢印D方向に回転)すると
き、蹴り爪40が突起体43を図7の反時計方向に蹴
り、この回動体42のアーム部45が前記ピン44を介
してロック杆37の先端側(鉤爪37a側)を図7の矢
印E方向に回動させるから、前記鉤爪37aと前記カー
ル除去ローラ17との係合が解除され、回動アーム26
はカール除去ローラ17の自重にて矢印F方向に回動し
て図3の状態(初期状態)に戻すことができるように構
成するものである。なお、図示しないストッパーにて前
記回動アーム26が初期状態で回動停止されるものとす
る。
When the star wheel 41 together with the platen 19 is appropriately rotated in the reverse direction (rotated in the direction of arrow D in FIG. 7), the kick claw 40 kicks the protrusion 43 counterclockwise in FIG. Since the arm portion 45 rotates the tip end side (hook claw 37a side) of the lock rod 37 through the pin 44 in the direction of arrow E in FIG. 7, the engagement between the hook claw 37a and the curl removing roller 17 is released. , Rotating arm 26
Is configured so that the curl removing roller 17 can be rotated in the direction of arrow F by its own weight to return to the state (initial state) of FIG. It is assumed that the rotation arm 26 is stopped in the initial state by a stopper (not shown).

【0023】ファクシミリにおいて、画像データの受信
にて連続用紙14に画像形成しつつ排紙トレイ23方向
に連続用紙14を搬送することを実行し、受信終了から
待機状態に移るとき、プラテン19を図7の矢印D方向
に若干逆回転させることで、カッター装置21で切断し
た連続用紙14の先端をサーマルヘッド20方向に若干
寸法だけ戻し、これにより、次回の受信開始時に連続用
紙14の先端部位に画像が形成され得ない余分な余白部
分が発生することを回避するものであり、このようなプ
ラテン19の逆回転動作を利用して、前記ロック杆37
をカール除去ローラ17から外すものである。
In the facsimile, when the image data is received, an image is formed on the continuous paper 14 and the continuous paper 14 is conveyed in the direction of the paper discharge tray 23. By slightly rotating it in the direction of arrow D in FIG. 7, the leading edge of the continuous paper 14 cut by the cutter device 21 is slightly returned in the direction of the thermal head 20. This is to avoid the generation of an extra blank area where an image cannot be formed, and by utilizing the reverse rotation operation of the platen 19 as described above, the locking rod 37
Is removed from the curl removing roller 17.

【0024】なお、前記ロック杆37を図7の矢印E方
向に回動させてカール除去ローラ17との係合を解除す
るための係合解除手段の他の実施例として、受信終了等
の信号を受けて、図示しない電磁ソレノイド等のアクチ
ュエータを間欠的にON作動させ、該アクチュエータの
突出作動杆(図示せず)にてロック杆37を図7の矢印
E方向に回動するように押すように構成しても良いので
ある。
As another embodiment of the engagement releasing means for releasing the engagement with the curl removing roller 17 by rotating the lock rod 37 in the direction of arrow E in FIG. In response to this, an actuator such as an electromagnetic solenoid (not shown) is intermittently turned ON, and a protruding rod (not shown) of the actuator pushes the lock rod 37 so as to rotate in the direction of arrow E in FIG. It may be configured as.

【0025】また、前記実施例においては、連続用紙1
4に対する記録終了時に係合解除手段に作動させていた
が、搬送停止時にも作動させるようにしても良い。本発
明は、複写機、プリンタ等におけるロール状に巻かれた
用紙等の連続用紙のカール除去装置に適用できることは
いうまでもない。
Further, in the above embodiment, the continuous paper 1
Although the engagement releasing means is operated at the end of recording for No. 4, it may be operated even when the conveyance is stopped. It goes without saying that the present invention can be applied to a decurling device for a continuous paper such as a paper wound in a roll in a copying machine, a printer or the like.

【0026】[0026]

【発明の作用・効果】以上に説明したように、請求項1
の発明の用紙のカール除去装置は、用紙を搬送する搬送
手段と、搬送される用紙を屈曲案内するカール矯正部材
と、該カール矯正部材に用紙を挟むカール除去ローラと
を備え、このカール除去ローラが取付けられた回動アー
ムの基端に部分歯車部を形成し、搬送手段には、用紙を
正方向に搬送するように回転するとき、回動連結杆を介
して取付けられた遊星歯車を、部分歯車部に噛み合うよ
うに設ける一方、この遊星歯車の所定角度の正回転に
て、当該遊星歯車と部分歯車部との噛み合いを解除する
噛み合い解除手段と、カール除去ローラがカール矯正部
材に接近した位置に姿勢を保持する係合手段とを設けた
ものであり、用紙を正方向に搬送するのに連動して、回
動連結杆及び遊星歯車を介して回動アームを回動させる
と共に、係合手段により回動アームに取付けられたカー
ル除去ローラがカール矯正部材に接近した位置で姿勢保
持されるから、用紙のカール除去作用が確実となる。ま
た、このとき、遊星歯車と回動アームにおける部分歯車
との噛み合いも解除されるので、カール除去のために連
続して搬送手段からの動力を消費することもない。
As described above, claim 1
The paper curl removing device of the invention of claim 1 is equipped with a conveying means for conveying the paper, a curl correcting member for bending and guiding the conveyed paper, and a curl removing roller for sandwiching the paper in the curl correcting member. A partial gear portion is formed at the base end of the rotating arm to which is attached, and a planetary gear attached through a rotating connecting rod when the paper is rotated so as to convey the paper in the forward direction, to the conveying means, While being provided so as to mesh with the partial gear portion, the engagement canceling means for canceling the engagement between the planet gear and the partial gear portion and the curl removing roller approached the curl correcting member when the planetary gear was rotated forward by a predetermined angle. An engaging means for holding the posture at a position is provided, and in conjunction with conveying the paper in the forward direction, the rotating arm is rotated through the rotating connecting rod and the planetary gear, and In the way Ri because decurling roller mounted on the rotating arm is attitude holding at a location adjacent to the curl correcting member, curl removing action of the sheet is ensured. Further, at this time, the meshing between the planetary gears and the partial gears in the rotating arm is released, so that the power from the conveying means is not continuously consumed for removing the curl.

【0027】そして、請求項2記載の発明の用紙のカー
ル除去装置は、請求項1記載の発明の作用・効果の他
に、用紙の搬送停止時には、カール除去ローラがカール
矯正部材から離反するように前記係合手段を移動させる
係合解除手段を設けたものであるから、カール除去装置
の箇所で停止した用紙に不必要な湾曲癖が付くことがな
くなる一方、用紙の搬送時のみ確実にカール除去できる
という効果を奏する。
Further, in addition to the function and effect of the invention described in claim 1, the paper curl removal device of the invention described in claim 2 prevents the curl removal roller from separating from the curl correction member when the conveyance of the paper is stopped. Since the disengagement means for moving the engagement means is provided in the paper, unnecessary curl is not applied to the paper stopped at the curl removing device, while the curl is surely performed only when the paper is conveyed. It has the effect of being removable.

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

【図1】ファクシミリ装置の概略側断面図である。FIG. 1 is a schematic side sectional view of a facsimile device.

【図2】カール除去ローラとカール矯正部材との位置関
係を示す図5のII−II線矢視要部側断面図である。
FIG. 2 is a side sectional view of a main part taken along the line II-II of FIG. 5, showing a positional relationship between a curl removing roller and a curl correcting member.

【図3】カール矯正部材に対してカール除去ローラが離
間した状態の図5の III−III線矢視側面図である。
FIG. 3 is a side view taken along the line III-III in FIG. 5 in a state where the curl removing roller is separated from the curl correcting member.

【図4】カール矯正部材に対してカール除去ローラが接
近する途次の状態を示す側面図である。
FIG. 4 is a side view showing a state where a curl removing roller approaches a curl correcting member.

【図5】図7のV−V線矢視断面図である。5 is a cross-sectional view taken along the line VV of FIG.

【図6】カール除去ローラがロック杆にて姿勢保持され
た状態の側面図である。
FIG. 6 is a side view showing a state where the curl removing roller is held in a posture by a lock rod.

【図7】ロック杆がカール除去ローラから係合解除する
状態を示す側面図である。
FIG. 7 is a side view showing a state in which the lock rod is disengaged from the curl removing roller.

【符号の説明】[Explanation of symbols]

14 連続用紙 15 ロール紙トレイ 16 カール除去装置 17 カール除去ローラ 18 カール矯正部材 19 プラテン 20 サーマルヘッド 21 カッター装置 24 枢軸 26 回動アーム 28 部分歯車 29 搬送機構としてのギヤ 30 回動連結杆 31 遊星歯車 32 作動杆 35 蹴り突起 37 ロック杆 40 蹴り爪 41 スターホイール 42 回動体 43 突起体 44 ピン 14 Continuous Paper 15 Roll Paper Tray 16 Curl Removing Device 17 Curl Removing Roller 18 Curl Removing Member 19 Platen 20 Thermal Head 21 Cutter Device 24 Axis 26 Rotating Arm 28 Partial Gear 29 Gear as Transport Mechanism 30 Rotating Connection Rod 31 Planetary Gear 32 Actuating Rod 35 Kicking Protrusion 37 Lock Rod 40 Kicking Claw 41 Star Wheel 42 Rotating Body 43 Projecting Body 44 Pin

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 用紙を搬送する搬送手段と、搬送される
用紙を屈曲案内するカール矯正部材と、該カール矯正部
材に用紙を挟むカール除去ローラとを備えた用紙のカー
ル除去装置において、カール除去ローラが取付けられた
回動アームの基端に部分歯車部を形成し、前記搬送手段
には、用紙を正方向に搬送するように回転するとき、回
動連結杆を介して取付けられた遊星歯車を、前記部分歯
車部に噛み合うように設ける一方、この遊星歯車の所定
角度の正回転にて、当該遊星歯車と前記部分歯車部との
噛み合いを解除する噛み合い解除手段と、前記カール除
去ローラがカール矯正部材に接近した位置に姿勢を保持
する係合手段とを設けたことを特徴とする用紙のカール
除去装置。
1. A decurling device for a sheet, comprising: a conveying unit configured to convey the sheet; a curl correcting member that bends and guides the conveyed sheet; and a curl removing roller that sandwiches the sheet between the curl correcting members. A partial gear portion is formed at the base end of a rotating arm to which a roller is attached, and a planetary gear is attached to the conveying means through a rotating connecting rod when the sheet is rotated so as to convey the sheet in the forward direction. Is provided so as to mesh with the partial gear portion, while the planetary gear is positively rotated at a predetermined angle to disengage the planetary gear from the partial gear portion, and the decurling roller curls. An apparatus for removing curl of a sheet, comprising: engaging means for holding a posture at a position close to a correction member.
【請求項2】 前記用紙の搬送停止時には、カール除去
ローラがカール矯正部材から離反するように前記係合手
段を移動させる係合解除手段を設けたことを特徴とする
請求項1記載の用紙のカール除去装置。
2. The sheet releasing apparatus according to claim 1, further comprising an engagement releasing unit that moves the engaging unit to separate the curl removing roller from the curl correcting member when the conveyance of the sheet is stopped. Curling device.
JP13314294A 1994-06-15 1994-06-15 Curl removing device for paper Pending JPH082765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13314294A JPH082765A (en) 1994-06-15 1994-06-15 Curl removing device for paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13314294A JPH082765A (en) 1994-06-15 1994-06-15 Curl removing device for paper

Publications (1)

Publication Number Publication Date
JPH082765A true JPH082765A (en) 1996-01-09

Family

ID=15097729

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13314294A Pending JPH082765A (en) 1994-06-15 1994-06-15 Curl removing device for paper

Country Status (1)

Country Link
JP (1) JPH082765A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7653340B2 (en) * 2006-05-30 2010-01-26 Konica Minolta Business Technologies, Inc. Decurl device and image forming apparatus provided therewith

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7653340B2 (en) * 2006-05-30 2010-01-26 Konica Minolta Business Technologies, Inc. Decurl device and image forming apparatus provided therewith

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