JPS594704B2 - Copy machine roller type fixing device - Google Patents
Copy machine roller type fixing deviceInfo
- Publication number
- JPS594704B2 JPS594704B2 JP5373877A JP5373877A JPS594704B2 JP S594704 B2 JPS594704 B2 JP S594704B2 JP 5373877 A JP5373877 A JP 5373877A JP 5373877 A JP5373877 A JP 5373877A JP S594704 B2 JPS594704 B2 JP S594704B2
- Authority
- JP
- Japan
- Prior art keywords
- roller
- copying machine
- paper
- fixing device
- type fixing
- 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
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
- Fixing For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
Description
【発明の詳細な説明】
本発明は複写機における定着装置、詳しくは一対のロー
ラを回転自在に接触してなるローラ型定着装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixing device for a copying machine, and more particularly to a roller type fixing device having a pair of rollers rotatably in contact with each other.
従来、複写機の定着装置としては、内部に加熱用ヒータ
を有する加熱ローラと、この加熱ローラと適当な圧力に
て接触回転する加圧ローラとを設けて両ローラ間に熱溶
融トナー像を担持した用紙を通過させて定着を行なう構
造のローラ型定着装置が知られている。Conventionally, the fixing device of a copying machine has been provided with a heating roller having an internal heating heater, and a pressure roller that rotates in contact with the heating roller with an appropriate pressure, and a hot melt toner image is carried between the two rollers. A roller-type fixing device is known that has a structure in which fixed paper is passed through and fixed.
このような構造の定着装置を備えた複写機に於いて紙詰
りが発生すると自動的に電源が切れるなどして複写機の
全作動を停止する。When a paper jam occurs in a copying machine equipped with such a fixing device, the power is automatically turned off and all operations of the copying machine are stopped.
そして、停止した複写機を再び作動させる為には複写機
の開閉部を開放して用紙通路内に存在する用紙を取り除
かなければならないが、加熱ローラと加圧ローラとの間
にて停止している用紙はこれら両ローラ間に大きな圧力
（例えば３０〜５０に９）が印加されている為に強力に
喰え込み支持され、用紙を両ロール間から引き出し除去
することは困難となつてしまう。In order to restart a stopped copying machine, it is necessary to open the opening/closing section of the copying machine and remove the paper present in the paper path. Since a large pressure (for example, 30 to 50 to 9) is applied between these two rollers, the paper is strongly bitten and supported, making it difficult to pull out and remove the paper from between the two rolls.
また、強引に用紙を引き出すと用紙上の未定着トナーで
加熱ロール表面を汚損してそれ以降の定着動作時に良好
なる定着がなされなくなるとの不具合を発生してしまう
。このために、従来より複写機に紙詰りが発生すると加
熱ローラと加圧ローラとの圧接状態を解除する機構が設
けてある。しかし、この機構は紙詰り時に発生する電気
信号を機械的な作動に変換して加熱ローラと加圧ローラ
との圧接状態を解除する構造であるから構造複雑で、複
雑な制御回路等を必要とするばかりでなく、信頼性も低
いものとなつてしまうとの不具合を有している。Further, if the paper is forcibly pulled out, the unfixed toner on the paper stains the surface of the heating roll, resulting in a problem that good fixing cannot be achieved during subsequent fixing operations. For this reason, copying machines have conventionally been provided with a mechanism that releases the pressure roller between the heating roller and the pressure roller when a paper jam occurs. However, this mechanism has a structure that converts the electric signal generated when a paper jam occurs into a mechanical operation to release the pressurized state between the heating roller and the pressure roller, so it is structurally complex and requires a complicated control circuit. In addition to this, there is also the problem of low reliability.
本発明は上記の事情に鑑みなされたものであり、その目
的は、複写機において紙詰り時に用紙を取り除くために
必然的に開放する開閉部の開閉動作を利用して一対のロ
ーラを接触回転状態および接触を解除する状態とするこ
とができるようにした複写機のローラ型定着装置を提供
することである。The present invention has been made in view of the above circumstances, and its object is to bring a pair of rollers into a contact rotation state by utilizing the opening/closing operation of an opening/closing section that is inevitably opened in order to remove paper in the event of a paper jam in a copying machine. Another object of the present invention is to provide a roller type fixing device for a copying machine that can be brought into a state where contact is released.
以下図面を参照して本発明の実施例を説明する。複写機
本体１には上部フレーム２がヒンジ３を介して開閉作動
可能に装着されて上部フレーム２が開閉部となつている
。４は上部フレーム２を開放位置に維持する支持部材で
ある。Embodiments of the present invention will be described below with reference to the drawings. An upper frame 2 is attached to the copying machine main body 1 via a hinge 3 so that it can be opened and closed, and the upper frame 2 serves as an opening and closing section. 4 is a support member that maintains the upper frame 2 in the open position.
複写機本体１の所定位置にはローラ型定着装置がローラ
支持手段Ａを介して設けてある。A roller type fixing device is provided at a predetermined position on the copying machine main body 1 via a roller support means A.
すなわち、ローラ支持手段Ａは固定フレーム５に設けた
下側ローラ６と固定フレーム５に支点７で上下揺動自在
に支承されたアーム８に設けた上側ローラ９とから構成
してある。すなわち、第２図に示す如く、下側ローラ６
は複写機本体１に固設した一対の固定フレーム５，５間
に回転自在に支承され、上側ローラ９は各固定フレーム
６に支承した一対のアーム８，８間に支承されていると
共に、スプリング（トーシヨンスプリング）１０で上方
に揺動付勢され上側ローラ９と下側ローラ６とは離隔す
るように構成してある。That is, the roller support means A is composed of a lower roller 6 provided on a fixed frame 5 and an upper roller 9 provided on an arm 8 supported on the fixed frame 5 at a fulcrum 7 so as to be vertically swingable. That is, as shown in FIG.
is rotatably supported between a pair of fixed frames 5, 5 fixed to the copying machine main body 1, and the upper roller 9 is supported between a pair of arms 8, 8 supported on each fixed frame 6, and is supported by a spring. (Torsion spring) 10 swings upwardly to force the upper roller 9 and lower roller 6 apart.
また、各アーム８には第３図に示す如くネジ孔１１が穿
孔されて調整ネジ杆１２がネジ合され、調整ネジ杆１２
はロツクナツ口３で固定してあると共に、調整ネジ杆１
２の貫通縦孔１４内には杆体１５が上下動自在に嵌挿さ
れ、杆体１５のフランジ１５ａと調整ネジ杆１２の上端
面１２ａとにはバネ１６が設けられて杆体１５は上方に
付勢してあると共に、杆体１５のフランジ部１５ａは上
部フレーム２に設けた受片１７と対峙し、上部フレーム
２を閉塞すると受片１７が杆体１５のフランジ１５ａと
当接してその自重によつて杆体１５をバネ１６に抗して
押し下げてそのバネ１６の反力によつて上側ローラ９を
下側ローラ６に接触回転状態となるように押し付けるよ
うに構成してある。つまり杆体１５が上部フレーム２と
対向する押圧部材となつている。次に作動を説明する。Further, each arm 8 is provided with a screw hole 11 as shown in FIG. 3, and an adjustment screw rod 12 is screwed therein.
is fixed with a lock nut opening 3, and an adjustment screw rod 1
A rod 15 is fitted into the vertical through hole 14 of No. 2 so as to be movable up and down, and a spring 16 is provided between the flange 15a of the rod 15 and the upper end surface 12a of the adjustment screw rod 12 to urge the rod 15 upward. At the same time, the flange portion 15a of the rod 15 faces a receiving piece 17 provided on the upper frame 2, and when the upper frame 2 is closed, the receiving piece 17 comes into contact with the flange 15a of the rod 15, and the rod is pushed by its own weight. 15 is pushed down against a spring 16, and the reaction force of the spring 16 pushes the upper roller 9 against the lower roller 6 so as to be in a rotational state. In other words, the rod 15 serves as a pressing member facing the upper frame 2. Next, the operation will be explained.
通常複写作業時には上部フレーム２は閉塞状態となるか
ら第４図に示す如くなつて受片１７が杆体１５をバネ１
６に抗して下方に押し下げるから、バネ１６の反力によ
つてアーム８が支点７を中心として下方に揺動し上側ロ
ーラ９を下側ローラ６に押し付け上側ローラ９と下側ロ
ーラ６とは接触回転状態となる。During normal copying operations, the upper frame 2 is in a closed state, so that the receiving piece 17 holds the rod 15 against the spring 1 as shown in FIG.
6, the arm 8 swings downward about the fulcrum 7 due to the reaction force of the spring 16, and presses the upper roller 9 against the lower roller 6, causing the upper roller 9 and lower roller 6 to is in contact rotation state.
したがつて、搬送機構１８によつて送られた紙１９は下
側ローラ６と上側ローラ９との間を通過定着した後に排
紙トレイ２０に排出される。Therefore, the paper 19 sent by the conveyance mechanism 18 passes between the lower roller 6 and the upper roller 9, is fixed, and then is ejected to the paper ejection tray 20.
なお、上側ローラ９と下側ローラ６とは内部に設けた加
熱手段（図示せず）によつて常時加熱され、熱電対制御
等により適温に維持されている。また、下側ローラ６と
上側ローラ９との押し付け力はロツクナツト１３を弛め
調整ネジ杆１２をアーム８のネジ孔１１に対して出入り
作動させて上端面１２ａとフランジ１５ａとの距離を変
更することによつて任意に調整できる。一方、複写作業
時に紙詰りが発生すると複写機は停止するので、用紙通
路内に存在するを取り除くべき上部フレーム２をヒンジ
３を中心として上方に開放作動する。Note that the upper roller 9 and the lower roller 6 are constantly heated by internal heating means (not shown) and maintained at an appropriate temperature by thermocouple control or the like. Further, the pressing force between the lower roller 6 and the upper roller 9 can be adjusted by loosening the lock nut 13 and moving the adjusting screw rod 12 in and out of the screw hole 11 of the arm 8 to change the distance between the upper end surface 12a and the flange 15a. It can be adjusted arbitrarily. On the other hand, if a paper jam occurs during a copying operation, the copying machine will stop, and therefore the upper frame 2, which is to be removed from the paper path, is opened upward around the hinge 3.
上部フレーム２が開放位置となると第５図に示す如く杆
体１５と受片１７とが離れてアーム８に下向の揺動力が
作用しなくなるのでアーム８はスプリング１０によつて
上方に揺動される。このために、上側ローラ９は下側ロ
ーラ６より離れ下側ローラ６と上側ローラ９とは接触を
解除する状態となる。したがつて、下側ローラ６と上側
ローラ９との間の用紙を簡単に引き出すことができる。When the upper frame 2 is in the open position, the rod 15 and the receiving piece 17 are separated as shown in FIG. Ru. For this reason, the upper roller 9 is separated from the lower roller 6 and the lower roller 6 and the upper roller 9 are brought out of contact. Therefore, the paper between the lower roller 6 and the upper roller 9 can be easily pulled out.
なお、第４図、第５図において２１は固定フレーム５に
設けたロールであり、用紙引き出し時に用紙の浮上りを
防止して上側ローラ９に用紙１９が接触するのを防止す
るものであり、それにより用紙１９上のトナーが上側ロ
ーラ９に付着することを防止できる。In FIGS. 4 and 5, reference numeral 21 is a roll provided on the fixed frame 5, which prevents the paper from floating when the paper is pulled out and prevents the paper 19 from coming into contact with the upper roller 9. This can prevent the toner on the paper 19 from adhering to the upper roller 9.
以上述べたように、紙詰り発生時に従来より実施してい
る上部フレーム２の開放作動との操作をなすのみで上側
ローラ９と下側ローラ６とを接触を解除する状態とする
ことができ、上側ローラ９と下側ローラ６との間の用紙
１９を簡単に引き出すことができる。As described above, when a paper jam occurs, the contact between the upper roller 9 and the lower roller 6 can be released by simply performing the conventional operation of opening the upper frame 2. The paper 19 between the upper roller 9 and the lower roller 6 can be easily pulled out.
また、何ら複雑な制御手段を必要としないから構造が簡
単で、作動が確実となる。Furthermore, since no complicated control means are required, the structure is simple and the operation is reliable.
本発明は前述のように構成したので、複写機において紙
詰り時に用紙を取り除くために必然的に開放する開閉部
２の開閉動作を利用して上側ローラ９と下側ローラ６を
接触回転状態・接触を解除する状態とすることができる
。Since the present invention is configured as described above, the upper roller 9 and the lower roller 6 are brought into a contact rotation state by utilizing the opening/closing operation of the opening/closing section 2, which is inevitably opened to remove paper when a paper jam occurs in a copying machine. The contact can be released.
したがつて、簡単な操作で上側ローラ９と下側ローラ６
間の用紙を引き出すことができると共に、構造簡単でか
つ作動が確実となる。Therefore, the upper roller 9 and the lower roller 6 can be easily adjusted.
The paper in between can be pulled out, and the structure is simple and the operation is reliable.
図面は本発明の実施例を示すもので、第１図は全体正面
図、第２図は要部拡大斜視図、第３図はその−線断面図
、第４図、第５図は作動説明図である。
１は複写機本体、２は開閉部、６，９は一対のローラ。The drawings show an embodiment of the present invention; FIG. 1 is an overall front view, FIG. 2 is an enlarged perspective view of main parts, FIG. 3 is a cross-sectional view taken along the line 3, and FIGS. 4 and 5 are explanations of operation. It is a diagram. 1 is the main body of the copying machine, 2 is an opening/closing section, and 6 and 9 are a pair of rollers.
Claims (1)
６と上側ローラ９との間を通過させて熱定着を行なうロ
ーラ型定着装置において、前記下側ローラ６を複写機本
体１に設け、前記上側ローラ９を、複写機本体１に上下
揺動自在に支承したアーム８に設けると共に、該アーム
８を上方に揺動付勢維持して下側ローラ６と上側ローラ
９とを離隔させ、前記アーム８には、複写機本体１に上
下開閉自在に設けた開閉部２と対向する押圧部材を設け
、この押圧部材を、開閉部２を閉じた時に開閉部２によ
つてアーム８を下方に揺動して上側ローラ９と下側ロー
ラ６とを圧接する構造としたことを特徴とする複写機の
ローラ型定着装置。1. In a roller type fixing device that thermally fixes a thermoplastic toner image carried on a sheet of paper by passing it between a lower roller 6 and an upper roller 9, the lower roller 6 is provided in the copying machine main body 1, The upper roller 9 is provided on an arm 8 that is vertically swingably supported on the copying machine main body 1, and the arm 8 is kept swinging upward to separate the lower roller 6 and the upper roller 9, The arm 8 is provided with a pressing member that faces the opening/closing section 2 provided on the copying machine main body 1 so as to be able to open and close vertically. 1. A roller-type fixing device for a copying machine, characterized in that it has a structure in which an upper roller 9 and a lower roller 6 are brought into pressure contact with each other by swinging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5373877A JPS594704B2 (en) | 1977-05-12 | 1977-05-12 | Copy machine roller type fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5373877A JPS594704B2 (en) | 1977-05-12 | 1977-05-12 | Copy machine roller type fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53139540A JPS53139540A (en) | 1978-12-05 |
| JPS594704B2 true JPS594704B2 (en) | 1984-01-31 |
Family
ID=12951155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5373877A Expired JPS594704B2 (en) | 1977-05-12 | 1977-05-12 | Copy machine roller type fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS594704B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60161104U (en) * | 1984-03-31 | 1985-10-26 | 石塚 文子 | half collar |
| JPS6433503U (en) * | 1987-08-25 | 1989-03-01 |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675749U (en) * | 1979-11-16 | 1981-06-20 | ||
| JPS56113178A (en) * | 1980-02-13 | 1981-09-05 | Toshiba Corp | Electronic copying machine |
| JPS56140384A (en) * | 1980-04-02 | 1981-11-02 | Ricoh Co Ltd | Fixing device |
| JPS5717077U (en) * | 1980-07-01 | 1982-01-28 | ||
| JPS5714787U (en) * | 1980-07-01 | 1982-01-26 | ||
| JPS5717953A (en) * | 1980-07-09 | 1982-01-29 | Toshiba Corp | Electrophotographic apparatus |
| JPS5717954A (en) * | 1980-07-09 | 1982-01-29 | Toshiba Corp | Electrophotographic apparatus |
| JPS57172373A (en) * | 1981-04-17 | 1982-10-23 | Sanyo Electric Co Ltd | Electrophotographic copying device |
| JPS5831352A (en) * | 1981-08-19 | 1983-02-24 | Mita Ind Co Ltd | Copy paper carrying device for copying machine |
| JPS5831558U (en) * | 1981-08-26 | 1983-03-01 | シャープ株式会社 | Heat roller pressure return device |
| JPS5838166U (en) * | 1981-09-04 | 1983-03-12 | 株式会社リコー | Fusing device |
| JPS59161149U (en) * | 1983-04-12 | 1984-10-29 | 京セラミタ株式会社 | Conveyance roller release device in copying machine |
| JPS59198256A (en) * | 1983-04-26 | 1984-11-10 | Ricoh Co Ltd | Sorter |
| JPS59167A (en) * | 1983-06-03 | 1984-01-05 | Toshiba Corp | Electrophotographic device |
| JPS608874A (en) * | 1983-06-29 | 1985-01-17 | Fuji Xerox Co Ltd | Fixing device of electronic copying machine |
| JPH0619598B2 (en) * | 1983-07-14 | 1994-03-16 | キヤノン株式会社 | Image forming device |
| JPS6019050U (en) * | 1983-07-18 | 1985-02-08 | 京セラミタ株式会社 | electrostatic copying machine |
| JPS6091377A (en) * | 1983-10-25 | 1985-05-22 | Canon Inc | Pressure fixing device |
| JPS612671U (en) * | 1984-06-12 | 1986-01-09 | ミノルタ株式会社 | Fusing device |
| JPH0818723B2 (en) * | 1985-10-16 | 1996-02-28 | オムロン株式会社 | Paper transport unit |
| JPS6315264A (en) * | 1986-07-07 | 1988-01-22 | Seiko Epson Corp | Image forming device |
| JPS6311960A (en) * | 1987-06-26 | 1988-01-19 | Toshiba Corp | Electrophotographic device |
| JPH0221670U (en) * | 1988-07-29 | 1990-02-14 | ||
| JP2698124B2 (en) * | 1988-11-10 | 1998-01-19 | 株式会社リコー | Sheet transport device |
| JPH0538360Y2 (en) * | 1990-06-28 | 1993-09-28 | ||
| JP2524109Y2 (en) * | 1992-02-28 | 1997-01-29 | 村田機械株式会社 | Original release mechanism of facsimile machine |
| JP6478622B2 (en) * | 2014-12-22 | 2019-03-06 | キヤノン株式会社 | Image forming apparatus |
-
1977
- 1977-05-12 JP JP5373877A patent/JPS594704B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60161104U (en) * | 1984-03-31 | 1985-10-26 | 石塚 文子 | half collar |
| JPS6433503U (en) * | 1987-08-25 | 1989-03-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53139540A (en) | 1978-12-05 |
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