JPH0830166A - Drive mechanism for image forming device - Google Patents
Drive mechanism for image forming deviceInfo
- Publication number
- JPH0830166A JPH0830166A JP6160957A JP16095794A JPH0830166A JP H0830166 A JPH0830166 A JP H0830166A JP 6160957 A JP6160957 A JP 6160957A JP 16095794 A JP16095794 A JP 16095794A JP H0830166 A JPH0830166 A JP H0830166A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- cover member
- intermitted
- image forming
- driving system
- 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
Landscapes
- Electrophotography Configuration And Component (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複写機、プリンタ等の
画像形成装置で、特に、これの駆動系の一部の駆動列を
切断することによって紙づまり用紙の除去を行なうこと
をできるようにした駆動断続機構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 copying machine or a printer, and more particularly, it can remove a jammed paper by cutting a part of a drive train of a drive system of the image forming apparatus. The present invention relates to the drive connection / disconnection mechanism.
【０００２】[0002]
【従来の技術】この種の機構の従来の技術としては実開
平４−２００５３号公報に示されたものがあり、この従
来の技術のものは、駆動列に対して断続可能に設けたギ
ヤは、閉状態のカバー部材にて回動するレバー部材にて
接続方向に付勢されるようになっている。2. Description of the Related Art As a conventional technique of this type of mechanism, there is one disclosed in Japanese Utility Model Laid-Open Publication No. 4-200553. In this conventional technique, a gear provided intermittently with respect to a drive train is not provided. The cover member in the closed state is biased in the connecting direction by a lever member that rotates.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の技術にあっ
ては、レバーや支軸を複雑に使用し、コスト面で不利で
あり、また、ギヤ相互のバックラッシュも一定に保たれ
にくい構造であった。In the above-mentioned conventional technique, the lever and the support shaft are complicatedly used, which is disadvantageous in terms of cost, and the backlash between the gears is difficult to be kept constant. there were.
【０００４】本発明は、上記のことにかんがみなされた
もので、熱定着部等の紙づまり時に、この部分を覆うカ
バー部材の開閉に連動させて熱定着部等の駆動系だけを
自動的にフリーにでき、これによりこの部分での紙づま
り用紙の除去を容易に行なうことができ、また通常の用
紙送行時には常に適正なギヤのバックラッシュを保つこ
とができるようにした駆動断続機構を提供することを目
的とするものである。The present invention has been made in view of the above, and when a paper jam occurs in the heat fixing unit or the like, only the drive system of the heat fixing unit or the like is automatically operated in conjunction with the opening and closing of the cover member that covers this part. Provided with a drive connection / disconnection mechanism, which can be made free, which makes it easy to remove jammed paper at this part, and can always maintain proper gear backlash during normal paper feeding. That is the purpose.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る画像形成装置の駆動断続機構は、駆動
系の一部を切断することによって紙づまり用紙の除去を
行なう機構を有する画像形成装置において、駆動系を構
成するギヤ列の一つのギヤを他のギヤに対して断続可能
にして支持部材に支持し、この断続可能にしたギヤの支
持部材を、機械本体のカバー部材にカバー部材が開とな
ったときに、ギヤが断状態になるようにスライドバーを
介して連動連結すると共に、断続可能にしたギヤと、こ
のギヤが断続可能に噛合する他のギヤのそれぞれに、両
ギヤが正常に噛合した状態で互いに当接するトラッキン
グロールを設けた構成となっている。In order to achieve the above object, the drive interrupting mechanism of the image forming apparatus according to the present invention has a mechanism for removing a jammed paper by cutting a part of the drive system. In an image forming apparatus, one gear of a gear train that constitutes a drive system is supported by a supporting member by making it discontinuous with respect to another gear, and the supporting member of the discontinuous gear is used as a cover member of a machine body. When the cover member is opened, the gears are interlockingly connected via a slide bar so that the gears are in an interrupted state, and the intermittently disengageable gear and each of the other gears in which the gears are disengageably engaged, The structure is provided with a tracking roll that abuts each other when both gears are normally meshed.
【０００６】[0006]
【作 用】カバー部材の開閉に連動して駆動系の１つ
のギヤが他のギヤに対して断続方向に移動する接続状態
での断続可能にしたギヤと他のギヤとはの噛合率は両ギ
ヤに設けたトラッキングロールにて一定に保持される。[Operation] When the cover member is opened and closed, one gear of the drive system moves in the intermittent direction with respect to the other gear. It is held constant by a tracking roll provided on the gear.
【０００７】[0007]
【実 施 例】本発明の実施例を図面に基づいて説明す
る。図１，図２は本発明を適用しようとする静電式の複
写機Ａの一例を概略的に示すもので、図中１は感光体、
２はこの感光体１に原稿画像光を入力するレーザ光発生
器、３はこのレーザ光発生器２からの入力光にて感光体
１上に作成された静電潜像をトナー像に現像する現像
機、４はこのトナー像を用紙供給装置５から供給された
用紙６に転写する転写装置、７は転写後の残像トナーを
クリーニングするクリーニング装置である。EXAMPLES Examples of the present invention will be described with reference to the drawings. 1 and 2 schematically show an example of an electrostatic copying machine A to which the present invention is applied, in which 1 is a photoconductor,
Reference numeral 2 denotes a laser light generator for inputting original image light to the photoconductor 1, and reference numeral 3 denotes an input light from the laser light generator 2 for developing an electrostatic latent image formed on the photoconductor 1 into a toner image. A developing device 4 is a transfer device for transferring the toner image onto the paper 6 supplied from the paper supply device 5, and a cleaning device 7 is a cleaning device for cleaning the residual image toner after the transfer.
【０００８】そして上記転写装置４にてトナー像が転写
された用紙６はヒートロール８とニップロール９とから
なる熱定着装置１０にて定着されてから排紙トレー１１
の排出されるようになっている。The sheet 6 on which the toner image has been transferred by the transfer device 4 is fixed by a thermal fixing device 10 composed of a heat roll 8 and a nip roll 9 and then discharged onto a discharge tray 11.
It is supposed to be discharged.
【０００９】このような複写機にあっては、転写装置４
から熱定着装置１０に至る経路で紙づまりが発生しやす
いため、この経路に対向する部分に紙づまり除去用カバ
ー１２が開閉自在に設けてある。In such a copying machine, the transfer device 4
Since a paper jam is likely to occur in the path from the printer to the heat fixing device 10, a paper jam removing cover 12 is provided to be openable and closable in a portion facing the path.
【００１０】図３は上記熱定着装置１０の一方のロー
ル、例えばヒートロール８を駆動する駆動機構を示すも
ので、１３はヒートロール８の軸に固着された従動ギ
ヤ、１４はこの従動ギヤ１３に常時噛合している中間ギ
ヤであり、この中間ギヤ１４の軸方向両側にトラッキン
グロール１５が設けてある。FIG. 3 shows a drive mechanism for driving one roll of the heat fixing device 10, for example, the heat roll 8, 13 is a driven gear fixed to the shaft of the heat roll 8, and 14 is this driven gear 13. Is an intermediate gear that is constantly meshed with each other, and tracking rolls 15 are provided on both axial sides of the intermediate gear 14.
【００１１】１６は上記中間ギヤ１４の支承部から離間
した位置に設けた枢支軸１７に中間部を回動自在に枢支
された回動レバーであり、この回動レバー１６の一端に
上記中間ギヤ１４に噛合する断続ギヤ１８が支承してあ
り、この断続ギヤ１８は回動レバー１６の回動により中
間ギヤ１４との噛合が断続されるようになっている。そ
してこの断続ギヤ１８の軸方向片側、または両側にトラ
ッキングロール１９が設けてあり、このトラッキングロ
ール１９が中間ギヤ１４のトラッキングロール１５に当
接することにより両ギヤ１４，１８の噛合率が一定にな
るようになっている。Reference numeral 16 denotes a rotary lever having a middle portion rotatably supported by a pivot shaft 17 provided at a position separated from the support portion of the intermediate gear 14, and one end of the rotary lever 16 has the above-mentioned structure. An intermittent gear 18 that meshes with the intermediate gear 14 is supported, and the intermittent gear 18 is meshed with the intermediate gear 14 by the rotation of the rotary lever 16. A tracking roll 19 is provided on one side or both sides of the intermittent gear 18 in the axial direction, and when the tracking roll 19 contacts the tracking roll 15 of the intermediate gear 14, the meshing ratio of both gears 14 and 18 becomes constant. It is like this.
【００１２】上記回動レバー１６の他端部にはフック２
０が設けてあり、このフック２０に、回動レバー１６
を、断続ギヤ１８を中間ギヤ１４と噛合する方向に回動
付勢する第１ばね２１が連結されている。A hook 2 is provided at the other end of the rotating lever 16.
0 is provided, and the hook 20 is provided with a turning lever 16
Is connected to a first spring 21 that urges the intermittent gear 18 to rotate in the direction in which it meshes with the intermediate gear 14.
【００１３】上記枢支軸１７には上記断続ギヤ１８に常
時噛合する駆動ギヤ２２が支承してあり、この駆動ギヤ
２２に複数のギヤからなるギヤ列２３が連結されてい
る。A drive gear 22 which constantly meshes with the intermittent gear 18 is supported on the pivot shaft 17, and a gear train 23 composed of a plurality of gears is connected to the drive gear 22.
【００１４】また上記枢支軸１７には断続レバー２４の
中間部が回動自在に枢支されている。そしてこの断続レ
バー２４の一端部には、上記回動レバー１６に、この回
動レバー１６を断続ギヤ１の断方向へのみに回動する方
向に係合する係合片２５が設けてある。またこの断続レ
バー２４の他端部には、この断続レバー２４を断続ギヤ
１８の断方向に回動付勢する第２ばね２６が連結されて
いる。An intermediate portion of an interrupting lever 24 is rotatably supported on the pivot shaft 17. An engaging piece 25 is provided at one end of the connecting lever 24 to engage the rotating lever 16 in a direction to rotate the rotating lever 16 only in the disconnecting direction of the connecting gear 1. A second spring 26 is connected to the other end of the connecting lever 24 so as to urge the connecting lever 24 to rotate in the disconnecting direction of the connecting gear 18.
【００１５】２７は上記断続レバー２４の他端部側面と
紙づまり除去用カバー１２との間にスライド自在に設け
られたスライドバーであり、このスライドバー２７の長
さは、紙づまり除去用カバー１２を閉じた状態で、一端
がこのカバー１２に当接し、他端が断続レバー２４の他
端部側面に当接してこの断続レバー２４を第２ばね２６
に抗して続方向に回動支持する長さになっている。上記
第１，第２のばね２１，２６において、第１ばね２１に
よる付勢トルクより、第２ばね２６による付勢トルクの
方が大きくなっている。Reference numeral 27 denotes a slide bar slidably provided between the side surface of the other end of the interrupting lever 24 and the paper jam removing cover 12, and the length of the slide bar 27 is the paper jam removing cover. With the cover 12 closed, one end contacts the cover 12 and the other end contacts the side surface of the other end of the interrupting lever 24 so that the interrupting lever 24 moves toward the second spring 26.
It has such a length that it can be pivotally supported in the continuation direction against. In the first and second springs 21 and 26, the biasing torque of the second spring 26 is larger than the biasing torque of the first spring 21.
【００１６】上記構成において、図３に示すところの、
紙づまり除去用カバー１２を閉じた状態では、スライド
バー２７はこの紙づまり除去用カバー１２にて押されて
その先端が断続レバー２４を第２ばね２６の付勢トルク
に抗してこれを続方向に回動する。これにより回動レバ
ー１６は断続レバー２４の係合片２５による断方向への
係合がはずれ、回動レバー１６は第１ばね２１の付勢ト
ルクにて続方向に回動してこれの先端部に支承された断
続ギヤ１８が中間ギヤ１４に噛合される。このときの両
ギヤ１４，１８の噛合率は両ギヤ１４，１８に設けたそ
れぞれのトラッキングロール１５，１９の当接により一
定に保たれる。この状態でギヤ列２３による駆動ギヤ２
２の回転が断続ギヤ１８、中間ギヤ１４を介して従動ギ
ヤ１３に伝達されてヒートロール８が回転され、熱定着
装置１０が回転駆動される。In the above structure, as shown in FIG.
In the state in which the paper jam removing cover 12 is closed, the slide bar 27 is pushed by the paper jam removing cover 12, and its tip continues the interrupting lever 24 against the biasing torque of the second spring 26. Rotate in the direction. As a result, the rotary lever 16 is disengaged in the disconnecting direction by the engaging piece 25 of the connecting / disconnecting lever 24, and the rotating lever 16 is rotated in the connecting direction by the urging torque of the first spring 21 and the tip thereof. The intermittent gear 18 supported by the section is meshed with the intermediate gear 14. The meshing ratio of both gears 14 and 18 at this time is kept constant by the contact of the tracking rolls 15 and 19 provided on both gears 14 and 18, respectively. In this state, the drive gear 2 by the gear train 23
The rotation of 2 is transmitted to the driven gear 13 via the intermittent gear 18 and the intermediate gear 14, the heat roll 8 is rotated, and the heat fixing device 10 is rotationally driven.
【００１７】紙づまり除去用カバー１２を図４に示すよ
うに開動すると、スライドバー２７による支持力がなく
なるから、断続レバー２４は第２ばね２６による付勢ト
ルクにて断方向に回動される。従って、この断続レバー
２４の係合片２５に係合して回動レバー１６、第１ばね
２１の付勢トルクに抗して断方向に回動されて、断続ギ
ヤ１８は中間ギヤ１４から離間し、その噛合が遮断され
る。これにより定着装置１０の両ロール８，９はギヤ列
２３に対してフリー状態となり、上記紙づまり除去用カ
バー１２の開放部から熱定着装置１０における紙づまり
用紙を容易に取り出すことができる。When the paper jam removing cover 12 is opened as shown in FIG. 4, the supporting force of the slide bar 27 is lost, so that the connecting lever 24 is rotated in the disconnecting direction by the urging torque of the second spring 26. . Therefore, the engaging gear 25 of the interrupting lever 24 is engaged with the engaging lever 25 to rotate in the disconnecting direction against the biasing torque of the rotating lever 16 and the first spring 21, and the disconnecting gear 18 is separated from the intermediate gear 14. However, the mesh is blocked. As a result, both rolls 8 and 9 of the fixing device 10 are free from the gear train 23, and the jammed paper in the heat fixing device 10 can be easily taken out from the open portion of the jamming cover 12.
【００１８】また図３に示す通常動作時において、熱定
着装置１０で、アコーデオン状の紙づまりが発生し、熱
定着装置１０に急激な負荷変動があっても、断続ギヤ１
８は、トラッキングロール１５，１９の当接により、中
間ギヤ１４への過剰な噛み込みが防止される。Further, in the normal operation shown in FIG. 3, even if accordion-shaped paper jam occurs in the heat fixing device 10 and the heat fixing device 10 undergoes a sudden load change, the intermittent gear 1
No. 8 is prevented from being excessively caught in the intermediate gear 14 by the contact of the tracking rolls 15 and 19.
【００１９】[0019]
【発明の効果】本発明によれば、熱定着装置１０部等を
覆う紙づまり除去用カバー１２等のカバーを開けること
により、熱定着装置１０等に至る駆動系だけを自動的に
フリーにすることができ、この部分での紙づまり用紙の
除去を容易に行なうことができ、また通常の用紙送行時
等の正常作動時においても、駆動系のギヤのバックラッ
シュを常時正常に保つことができる。According to the present invention, only the drive system leading to the heat fixing device 10 and the like is automatically made free by opening the cover such as the paper jam removing cover 12 that covers the heat fixing device 10 and the like. It is possible to easily remove the jammed paper at this portion, and the backlash of the gears of the drive system can always be kept normal even during normal operation such as normal paper feeding. .
【図１】 複写機の一例を概略的に示す斜視図である。FIG. 1 is a perspective view schematically showing an example of a copying machine.
【図２】 複写機の内部構造を概略的に示す構成説明図
である。FIG. 2 is a structural explanatory view schematically showing the internal structure of the copying machine.
【図３】 熱定着装置部の駆動機構を示す構成説明図で
ある。FIG. 3 is a structural explanatory view showing a drive mechanism of a heat fixing device section.
【図４】 紙づまり除去用カバーを開状態とした熱定着
装置部の駆動機構を示す構成説明図である。FIG. 4 is a structural explanatory view showing a drive mechanism of a heat fixing device section with a paper jam removing cover in an open state.
【図５】 熱定着装置の駆動機構を示す斜視図である。FIG. 5 is a perspective view showing a drive mechanism of the heat fixing device.
１…感光体、２…レーザ光発生器、３…現像機、４…転
写装置、５…用紙供給装置、６…用紙、７…クリーニン
グ装置、８…ヒートロール、９…ニップロール、１０…
熱定着装置、１１…排紙トレー、１２…紙づまり除去用
カバー、１３…従動ギヤ、１４…中間ギヤ、１５，１９
…トラッキングロール、１６…回動レバー、１７…枢支
軸、１８…断続ギヤ、２０…フック、２１，２６…ば
ね、２２…駆動ギヤ、２３…駆動系、２４…断続レバ
ー、２５…係合片、２７…スライドバー。DESCRIPTION OF SYMBOLS 1 ... Photosensitive member, 2 ... Laser beam generator, 3 ... Developing device, 4 ... Transfer device, 5 ... Paper supply device, 6 ... Paper, 7 ... Cleaning device, 8 ... Heat roll, 9 ... Nip roll, 10 ...
Heat fixing device, 11 ... Paper discharge tray, 12 ... Cover for removing paper jam, 13 ... Drive gear, 14 ... Intermediate gear, 15, 19
... tracking roll, 16 ... rotating lever, 17 ... pivot shaft, 18 ... intermittent gear, 20 ... hook, 21,26 ... spring, 22 ... driving gear, 23 ... driving system, 24 ... intermitting lever, 25 ... engaging One, 27 ... Slide bar.
Claims (1)
づまり用紙の除去を行なう機構を有する画像形成装置に
おいて、駆動系を構成するギヤ列の一つのギヤを他のギ
ヤに対して断続可能にして支持部材に支持し、この断続
可能にしたギヤの支持部材を、機械本体のカバー部材に
カバー部材が開となったときに、ギヤが断状態になるよ
うにスライドバーを介して連動連結すると共に、断続可
能にしたギヤと、このギヤが断続可能に噛合する他のギ
ヤのそれぞれに、両ギヤが正常に噛合した状態で互いに
当接するトラッキングロールを設けたことを特徴とする
画像形成装置の駆動断続機構。1. An image forming apparatus having a mechanism for removing jammed paper by cutting a part of a drive system, wherein one gear of a gear train constituting the drive system can be intermittently connected to another gear. The gear support member, which is disengageable, is interlockingly connected via a slide bar so that the gear is disengaged when the cover member is opened to the cover member of the machine body. In addition, an image forming apparatus characterized in that a disengageable gear and another gear with which this gear meshes discontinuously are provided with tracking rolls that abut against each other when both gears are normally meshed. Drive intermittent mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6160957A JPH0830166A (en) | 1994-07-13 | 1994-07-13 | Drive mechanism for image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6160957A JPH0830166A (en) | 1994-07-13 | 1994-07-13 | Drive mechanism for image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0830166A true JPH0830166A (en) | 1996-02-02 |
Family
ID=15725851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6160957A Pending JPH0830166A (en) | 1994-07-13 | 1994-07-13 | Drive mechanism for image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0830166A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7448620B2 (en) | 2003-12-01 | 2008-11-11 | Samsung Electronics Co., Ltd | Scanning apparatus and method of preventing damage of gears of the same |
| JP2009296530A (en) * | 2008-06-09 | 2009-12-17 | Canon Inc | Image processing apparatus |
| CN104181798A (en) * | 2013-05-22 | 2014-12-03 | 京瓷办公信息***株式会社 | Member moving mechanism and image forming apparatus including same |
-
1994
- 1994-07-13 JP JP6160957A patent/JPH0830166A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7448620B2 (en) | 2003-12-01 | 2008-11-11 | Samsung Electronics Co., Ltd | Scanning apparatus and method of preventing damage of gears of the same |
| JP2009296530A (en) * | 2008-06-09 | 2009-12-17 | Canon Inc | Image processing apparatus |
| EP2133751A3 (en) * | 2008-06-09 | 2010-10-27 | Canon Kabushiki Kaisha | Image processing apparatus and transport device |
| US7954812B2 (en) | 2008-06-09 | 2011-06-07 | Canon Kabushiki Kaisha | Image processing apparatus and transport device |
| CN104181798A (en) * | 2013-05-22 | 2014-12-03 | 京瓷办公信息***株式会社 | Member moving mechanism and image forming apparatus including same |
| JP2014228669A (en) * | 2013-05-22 | 2014-12-08 | 京セラドキュメントソリューションズ株式会社 | Member movement mechanism and image formation device provided therewith |
| US9335715B2 (en) | 2013-05-22 | 2016-05-10 | Kyocera Document Solutions Inc. | Member moving mechanism and image forming apparatus including same |
| US9377747B1 (en) | 2013-05-22 | 2016-06-28 | Kyocera Document Solutions Inc. | Member moving mechanism and image forming apparatus including same |
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