JPH10147447A - Belt feeding device of image forming device - Google Patents
Belt feeding device of image forming deviceInfo
- Publication number
- JPH10147447A JPH10147447A JP32356996A JP32356996A JPH10147447A JP H10147447 A JPH10147447 A JP H10147447A JP 32356996 A JP32356996 A JP 32356996A JP 32356996 A JP32356996 A JP 32356996A JP H10147447 A JPH10147447 A JP H10147447A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- roller
- foreign matter
- image forming
- driven
- 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.)
- Granted
Links
Landscapes
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、複写機・プリン
タ・ファクシミリやそれらの複合機などの画像形成装置
に適用し得る。詳しくは、そのような画像形成装置にお
いて、駆動ローラと従動ローラ間にエンドレスのベルト
を掛け渡し、そのベルトを駆動ローラを駆動して搬送す
るベルト搬送装置に関する。The present invention can be applied to an image forming apparatus such as a copying machine, a printer, a facsimile, and a multifunction peripheral thereof. More specifically, in such an image forming apparatus, the present invention relates to a belt conveyance device that wraps an endless belt between a driving roller and a driven roller and drives the driving roller to convey the belt.
【０００２】[0002]
【従来の技術】従来、この種のベルト搬送装置の中に
は、駆動力を確実にベルトに伝達すべく、駆動ローラと
してゴム製のローラを用いたものがある。しかし、ゴム
製の駆動ローラには、高温や高湿度の環境状態の下で
は、表面の摩擦係数が低下するという問題があった。2. Description of the Related Art Heretofore, there has been a belt conveying apparatus of this type which uses a rubber roller as a driving roller in order to surely transmit a driving force to a belt. However, the driving roller made of rubber has a problem that the friction coefficient of the surface is reduced under high-temperature and high-humidity environmental conditions.
【０００３】そこで、駆動ローラとして、芯金の外周に
樹脂材料をコーティングしてその表面を粗面に形成した
樹脂コートローラを用いたものもある。Therefore, there is a drive roller using a resin-coated roller in which the outer periphery of a cored bar is coated with a resin material to form a roughened surface.
【０００４】[0004]
【発明が解決しようとする課題】ところが、従来、駆動
ローラとして、そのような樹脂コートローラを用いた場
合でも、そのローラ表面とベルト裏面の間に、紙粉や埃
や浮遊トナーなどの異物が侵入すると、ベルト搬送時
に、ベルトがスリップして駆動ローラの駆動力を確実に
ベルトに伝達することができないという課題があった。However, conventionally, even when such a resin-coated roller is used as a driving roller, foreign matters such as paper dust, dust, and floating toner are present between the roller surface and the belt rear surface. When the belt enters, the belt slips during the belt conveyance, and there is a problem that the driving force of the driving roller cannot be reliably transmitted to the belt.
【０００５】[0005]
【課題を解決するための手段】そこで、請求項１に記載
の発明は、たとえば以下の図示実施の形態に示すとお
り、駆動ローラ４０・４５のような駆動ローラと、従動
ローラ４１・４６のような少なくとも１つの従動ローラ
間に、感光体ベルト１２や中間転写ベルト４４のような
エンドレスのベルトを掛け渡し、そのベルトを前記駆動
ローラを駆動して搬送する画像形成装置のベルト搬送装
置において、前記従動ローラの少なくとも１つに、前記
ベルトの裏面に付着した異物を除去するクリーニング機
能をもたせてなる、ことを特徴とする。SUMMARY OF THE INVENTION Accordingly, the present invention as defined in claim 1 includes, for example, a driving roller such as driving rollers 40 and 45 and a driving roller such as driven rollers 41 and 46 as shown in the following embodiments. An endless belt such as the photoreceptor belt 12 or the intermediate transfer belt 44 is stretched between at least one driven roller, and the belt is transported by driving the driving roller. At least one of the driven rollers is provided with a cleaning function for removing foreign substances attached to the back surface of the belt.
【０００６】そして、ベルト搬送時、そのクリーニング
機能をもった従動ローラでベルトの裏面に付着した異物
を除去する。When the belt is conveyed, foreign matter adhering to the back surface of the belt is removed by a driven roller having a cleaning function.
【０００７】請求項２に記載の発明は、たとえば以下の
図示実施の形態に示すとおり、請求項１に記載の画像形
成装置のベルト搬送装置において、前記従動ローラの少
なくとも１つに、その表面に植毛を施してクリーニング
機能をもたせてなる、ことを特徴とする。According to a second aspect of the present invention, there is provided a belt conveying device for an image forming apparatus according to the first aspect, wherein at least one of the driven rollers is provided on a surface thereof. It is characterized by being provided with a flocking and having a cleaning function.
【０００８】そして、ベルト搬送時、表面に植毛を施し
た従動ローラでベルトの裏面に付着した異物を除去す
る。When the belt is conveyed, foreign matter adhering to the back surface of the belt is removed by a driven roller having a flocked surface.
【０００９】請求項３に記載の発明は、たとえば以下の
図示実施の形態に示すとおり、請求項１または２に記載
の画像形成装置のベルト搬送装置において、たとえば感
光体ベルト１２や中間転写ベルト４４のように、前記ベ
ルトがその表面に画像を形成するものである、ことを特
徴とする。According to a third aspect of the present invention, as shown in the following embodiments, for example, in the belt transport device of the image forming apparatus according to the first or second aspect, for example, the photosensitive belt 12 and the intermediate transfer belt 44 are provided. Wherein the belt forms an image on its surface.
【００１０】請求項４に記載の発明は、たとえば以下の
実施の形態に示すとおり、請求項１または２に記載の画
像形成装置のベルト搬送装置において、前記ベルトが用
紙を搬送するものである、ことを特徴とする。According to a fourth aspect of the present invention, as described in the following embodiments, in the belt transport device of the image forming apparatus according to the first or second aspect, the belt transports a sheet. It is characterized by the following.
【００１１】請求項５に記載の発明は、たとえば以下の
実施の形態に示すとおり、請求項１または２に記載の画
像形成装置のベルト搬送装置において、前記ベルトが駆
動力を伝達するものである、ことを特徴とする。According to a fifth aspect of the present invention, as described in the following embodiments, in the belt conveying device of the image forming apparatus according to the first or second aspect, the belt transmits a driving force. , Characterized in that.
【００１２】[0012]
【発明の実施の形態】以下、図面を参照しつつ、この発
明の実施の形態について説明する。図２は、請求項１に
記載の発明の一実施の形態であるベルト搬送装置を備え
たカラーレーザプリンタで、その概略構成を示す。Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows a schematic configuration of a color laser printer provided with a belt transport device according to an embodiment of the present invention.
【００１３】図中符号１０は、プリンタ本体である。プ
リンタ本体１０内には、図２中符号１１で示すこの発明
の１例である感光体ベルト搬送装置を備える。感光体ベ
ルト搬送装置１１は、駆動ローラ４０と第１従動ローラ
４１と細径な第２従動ローラ４２間に、エンドレスの感
光体ベルト１２を掛け渡してなる。Reference numeral 10 in the drawing denotes a printer main body. In the printer main body 10, there is provided a photoreceptor belt conveying device, which is an example of the present invention, indicated by reference numeral 11 in FIG. The photoreceptor belt conveying device 11 is configured by extending an endless photoreceptor belt 12 between a driving roller 40, a first driven roller 41, and a second driven roller 42 having a small diameter.
【００１４】また、この感光体ベルト搬送装置１１の周
りには、その下に設ける帯電装置１３から該感光体ベル
ト１２の搬送方向（図中矢印Ａ方向）に順に、多色現像
装置１４、黒色現像装置１５、この発明の他例である中
間転写ベルト搬送装置１６、感光体クリーニング装置１
７、除電装置１８を備える。また、多色現像装置１４の
下側にレーザ書込み装置１９を備える。Around the photoreceptor belt conveying device 11, a multicolor developing device 14 and a black color developing device 14 are sequentially arranged from a charging device 13 provided thereunder in a conveying direction of the photoreceptor belt 12 (direction of arrow A in the figure). Developing device 15, intermediate transfer belt conveying device 16 as another example of the present invention, photoreceptor cleaning device 1
7. It has a static eliminator 18. Further, a laser writing device 19 is provided below the multicolor developing device 14.
【００１５】多色現像装置１４は、円筒ケース１４ａ内
の中心軸１４ｂの周りに、青色・赤色・黄色の各色トナ
ーを収納した３つの現像器を、それぞれ支持フレーム１
４ｃに取り付けて支持する。そして、中心軸１４ｂを中
心として支持フレーム１４ｂを回転して各現像器の現像
スリーブ位置を、順次感光体ベルト１２に対向可能とす
る。黒色現像装置１５は、常時その背後に設けるカム１
５ａに向けてばね付勢する一方、そのカム１５ａを回転
して感光体ベルト１２に対し現像スリーブ１５ｂを接離
自在とする。The multicolor developing device 14 includes three developing devices, each containing a blue, red, and yellow toner, around a central axis 14b in a cylindrical case 14a.
4c. Then, the support frame 14b is rotated about the center axis 14b so that the developing sleeve position of each developing device can be sequentially opposed to the photosensitive belt 12. The black developing device 15 is always provided with a cam 1 provided behind it.
While the spring is biased toward 5a, the cam 15a is rotated so that the developing sleeve 15b can be freely moved toward and away from the photosensitive belt 12.
【００１６】中間転写ベルト搬送装置１６は、駆動ロー
ラ４５と従動ローラ４６間に、エンドレスの中間転写ベ
ルト４４を掛け渡し、その一部を感光体ベルト１２に接
触してなる。そして、その接触位置の内側に、ベルト転
写チャージヤ２３を設けてなる。また、中間転写ベルト
搬送装置１６は、駆動ローラ４５の左右両側にベルトク
リーニング装置２０と転写装置２１を、それぞれ中間転
写ベルト４４から離して設けてなる。The intermediate transfer belt conveying device 16 has an endless intermediate transfer belt 44 stretched between a drive roller 45 and a driven roller 46, and a part of the intermediate transfer belt 44 is in contact with the photosensitive belt 12. A belt transfer charger 23 is provided inside the contact position. In addition, the intermediate transfer belt transport device 16 is provided with a belt cleaning device 20 and a transfer device 21 on both left and right sides of a driving roller 45, respectively, separated from the intermediate transfer belt 44.
【００１７】さらに、プリンタ本体１０内には、黒色現
像装置１５の上側に定着装置２２を備え、左側に電装・
制御装置２４を備え、その上側に排気用ファン２５を備
える。そして、底部側に、用紙Ｐを収納した給紙カセッ
ト２６を備えてなる。Further, in the printer body 10, a fixing device 22 is provided above the black developing device 15, and an electric device is provided on the left side.
A control device 24 is provided, and an exhaust fan 25 is provided above the control device 24. Further, a paper feed cassette 26 containing the paper P is provided on the bottom side.
【００１８】そうして、図示プリンタでは、画像記録時
に、感光体ベルト１２を図２中Ａ方向に搬送し、中間転
写ベルト４４をＢ方向に搬送するとともに、給紙カセッ
ト２６内の用紙Ｐを給紙ローラ２９を回転して繰り出
す。さらに、その用紙Ｐを搬送ローラ対３０で搬送路３
１を通して搬送してレジストローラ対３２に突き当てて
止める。In the illustrated printer, at the time of image recording, the photosensitive belt 12 is transported in the direction A in FIG. 2, the intermediate transfer belt 44 is transported in the direction B, and the paper P in the paper feed cassette 26 is transported. The paper feed roller 29 is rotated and fed out. Further, the sheet P is transported by the transport roller pair 30 to the transport path 3.
1 and is brought into contact with the registration roller pair 32 and stopped.
【００１９】一方、感光体ベルト１２の搬送にともな
い、まずその表面を帯電装置１３で一様に帯電する。次
いで、第１色の書込み情報に基づきレーザ書込み装置１
９でレーザ光Ｌを照射して感光体ベルト１２上に第１色
の静電潜像を形成する。On the other hand, as the photosensitive belt 12 is conveyed, first, the surface thereof is uniformly charged by the charging device 13. Next, based on the first color writing information, the laser writing device 1
At 9, a first color electrostatic latent image is formed on the photosensitive belt 12 by irradiating the laser beam L.
【００２０】それから、たとえば多色現像装置１４の第
１色の現像器を、感光体ベルト１２と対向させ、その第
１色のトナーを付着して静電潜像を現像し、その可視像
をベルト転写チャージャ２３で中間転写ベルト４４上に
いったん転写する。その画像転写後、感光体ベルト１２
上に残った第１色のトナーを、感光体クリーニング装置
１７のブレード１７ａで掻き落してクリーニングし、感
光体クリーニング装置１７の下部に備える廃トナー回収
容器１７ｂ内に回収する。Then, for example, the first color developing device of the multi-color developing device 14 is opposed to the photoreceptor belt 12, and the first color toner is adhered to develop the electrostatic latent image. Is once transferred onto the intermediate transfer belt 44 by the belt transfer charger 23. After the image transfer, the photosensitive belt 12
The remaining first color toner is scraped off by the blade 17a of the photoreceptor cleaning device 17 to be cleaned, and is collected in a waste toner collecting container 17b provided below the photoreceptor cleaning device 17.
【００２１】その後、第２色および第３色の画像を形成
するときは、各々の書込み情報に基づき、同様に、レー
ザ書込みを行って各々の静電潜像を形成し、多色現像装
置１４の第２および第３色の現像器を各々現像位置に移
動して静電潜像を現像し、それら可視像を各々中間転写
ベルト４４上に転写し、画像転写後に感光体ベルト１２
上をクリーニングして廃トナーを廃トナー回収容器１７
ｂ内に回収する。Thereafter, when forming the images of the second color and the third color, similarly, based on the respective writing information, laser writing is performed to form respective electrostatic latent images, and the multicolor developing device 14 Are moved to respective developing positions to develop the electrostatic latent images, and these visible images are respectively transferred onto the intermediate transfer belt 44. After the image transfer, the photosensitive belt 12
Clean the upper part and collect waste toner in waste toner collection container 17
Collect in b.
【００２２】また、黒色の画像を形成するときは、同様
に、その書込み情報に基づきレーザ書込みを行って静電
潜像を形成し、黒色現像装置１５の現像スリーブ１５ｂ
を感光体ベルト１２に接触して静電潜像を現像し、その
可視像を中間転写ベルト４４上に転写し、画像転写後に
感光体ベルト１２上をクリーニングして廃トナーを廃ト
ナー回収容器１７ｂ内に回収する。こうして中間転写ベ
ルト４４上に、単色または複数色の転写画像を形成す
る。Similarly, when a black image is formed, laser writing is performed based on the writing information to form an electrostatic latent image, and the developing sleeve 15b of the black developing device 15 is formed.
Is brought into contact with the photoreceptor belt 12 to develop an electrostatic latent image, the visible image is transferred onto the intermediate transfer belt 44, and after the image is transferred, the photoreceptor belt 12 is cleaned and the waste toner is collected. Collect in 17b. Thus, a transfer image of a single color or a plurality of colors is formed on the intermediate transfer belt 44.
【００２３】しかる後、転写装置２１の転写ローラ２１
ａとベルトクリーニング装置２０のブレード２０ａを中
間転写ベルト４４に接触する一方、その中間転写ベルト
４４上の転写画像に、レジストローラ対３２でタイミン
グをとって用紙Ｐを中間転写ベルト４４と転写ローラ２
１ａ間へ搬送する。そして、その用紙Ｐ上に単色または
複数色の転写画像を転写する。このカラー画像転写後
は、用紙Ｐを定着装置２２へと搬送し、そこで熱と圧力
を加えて画像を定着し、その定着後、排紙ローラ対３３
で排紙スタック部３４上へと排出する。Thereafter, the transfer roller 21 of the transfer device 21
a and the blade 20 a of the belt cleaning device 20 are brought into contact with the intermediate transfer belt 44, while the transfer image on the intermediate transfer belt 44 is timed by the registration roller pair 32 to transfer the paper P to the intermediate transfer belt 44 and the transfer roller 2.
It is transported between 1a. Then, a transfer image of a single color or a plurality of colors is transferred onto the paper P. After the transfer of the color image, the sheet P is conveyed to the fixing device 22, where the image is fixed by applying heat and pressure thereto.
To discharge onto the discharge stack unit 34.
【００２４】一方、画像転写後、中間転写ベルト４４上
に残ったトナーは、ベルトクリーニング装置２０のブレ
ード２０ａで掻き落してクリーニングする。掻き落した
トナーは、オーガ２０ｂで軸方向に搬送し、さらに不図
示の搬送経路を通して廃トナー回収容器１７ｂへと搬送
してそこに回収する。On the other hand, after the image is transferred, the toner remaining on the intermediate transfer belt 44 is scraped off and cleaned by the blade 20a of the belt cleaning device 20. The scraped toner is conveyed in the axial direction by the auger 20b, and further conveyed to a waste toner collecting container 17b through a conveying path (not shown) to be collected there.
【００２５】ところで、上述した図示プリンタでは、感
光体ベルト搬送装置１１および中間転写ベルト搬送装置
１６を、帯電装置１３・感光体クリーニング装置１７・
ベルトクリーニング装置２０・転写装置２１とともに一
体にまとめ、それらを、図１に示すようにフレーム３５
で支持してプロセスカートリッジＣを構成する。In the illustrated printer described above, the photosensitive belt transport device 11 and the intermediate transfer belt transport device 16 are connected to the charging device 13, the photosensitive member cleaning device 17,
Together with the belt cleaning device 20 and the transfer device 21, they are integrated into a frame 35 as shown in FIG.
To constitute the process cartridge C.
【００２６】さて、この発明による感光体ベルト搬送装
置１１では、感光体ベルト１２として、たとえば離型性
の高いニッケル電鋳でつくったエンドレスベルトを用い
る。Now, in the photoreceptor belt conveying device 11 according to the present invention, as the photoreceptor belt 12, for example, an endless belt made of nickel electroformed with high releasability is used.
【００２７】また、感光体ベルト搬送装置１１は、駆動
ローラ４０として、たとえばパイプ状芯金の外周をウレ
タン系の樹脂でコーティングし、その表面を表面粗さＲ
ｚがおよそ３μｍ〜５０μｍの粗面に形成した樹脂コー
トローラを用いる。なお、コーティング材料としては、
ウレタン系樹脂にＥＰゴムを２０〜５０ｗｔの割合で混
合したものなどを用いてもよい。In the photoreceptor belt conveying device 11, as the drive roller 40, for example, the outer periphery of a pipe-shaped core is coated with a urethane-based resin, and the surface is coated with a surface roughness R.
A resin-coated roller formed on a rough surface having z of about 3 μm to 50 μm is used. In addition, as a coating material,
A mixture of a urethane-based resin and an EP rubber at a ratio of 20 to 50 wt.
【００２８】さらに、第１従動ローラ４１として、たと
えばパイプ状芯金の外周に接着剤を塗布し、その接着層
上に多数の毛を立てて植毛したクリーニング用の植毛ロ
ーラを用いる。毛の長さは、およそ０.５〜３ｍｍであ
ることが望ましい。Further, as the first driven roller 41, for example, a cleaning flocking roller is used in which an adhesive is applied to the outer periphery of a pipe-shaped metal core, and a large number of bristles are erected on the adhesive layer and the hair is transplanted. Desirably, the length of the bristles is approximately 0.5-3 mm.
【００２９】一方、この発明による中間転写ベルト搬送
装置１６では、中間転写ベルト４４として、たとえば離
型性の高い樹脂材料でつくったエンドレスベルトを用い
る。そして、感光体ベルト搬送装置１１と同様に、上記
ローラ４５・４６のローラ軸両端をフレーム３５で回転
自在に支持し、従動ローラ４６を、不図示の付勢ばねで
付勢して中間転写ベルト４４をローラ４５・４６間で張
り渡してなる。On the other hand, in the intermediate transfer belt conveying device 16 according to the present invention, as the intermediate transfer belt 44, for example, an endless belt made of a resin material having high releasability is used. Similarly to the photoreceptor belt conveying device 11, both ends of the roller shafts of the rollers 45 and 46 are rotatably supported by a frame 35, and the driven roller 46 is urged by an urging spring (not shown) to rotate the intermediate transfer belt. 44 is stretched between rollers 45 and 46.
【００３０】また、この中間転写ベルト搬送装置１６
は、駆動ローラ４５として、たとえば上述した駆動ロー
ラ４０と同様な樹脂コートローラを用いる。さらに、従
動ローラ４６として、たとえば上述の第１従動ローラ４
１と同様に、表面に植毛を施したクリーニング用の植毛
ローラを用いる。The intermediate transfer belt conveying device 16
As the drive roller 45, for example, a resin coat roller similar to the drive roller 40 described above is used. Further, as the driven roller 46, for example, the first driven roller 4 described above is used.
As in the case of 1, a flocked roller for cleaning having a flocked surface is used.
【００３１】そして、画像記録時に、図示しない駆動源
からの駆動力を、感光体ベルト搬送装置１１の駆動ロー
ラ４０に伝達してその駆動ローラを回転駆動し、感光体
ベルト１２を第１および第２従動ローラ４１・４２を従
動回転させながら、図１中Ａ方向に搬送する。また、同
じ駆動力を、中間転写ベルト搬送装置１６の駆動ローラ
４５に伝達してその駆動ローラ４０を回転駆動し、中間
転写ベルト４４を従動ローラ４６を従動回転させながら
Ｂ方向に搬送する。At the time of image recording, a driving force from a driving source (not shown) is transmitted to the driving roller 40 of the photoreceptor belt conveying device 11 to rotate the driving roller, thereby moving the photoreceptor belt 12 to the first and second positions. 2 While the driven rollers 41 and 42 are driven and rotated, they are transported in the direction A in FIG. In addition, the same driving force is transmitted to the driving roller 45 of the intermediate transfer belt conveying device 16 to rotate the driving roller 40 and convey the intermediate transfer belt 44 in the direction B while the driven roller 46 is driven to rotate.
【００３２】図示実施の形態では、このベルト搬送時、
感光体ベルト１２の裏面に紙粉・埃・浮遊トナーなどの
異物が付着していると、その裏面上の異物が第１従動ロ
ーラ４１位置を通るときに、離型性を有するベルト裏面
から第１従動ローラ４１の植毛部分に転移してベルト裏
面から除去される。In the illustrated embodiment, when the belt is conveyed,
If foreign matter such as paper dust, dust, and floating toner adheres to the back surface of the photoreceptor belt 12, when the foreign matter on the back surface passes through the position of the first driven roller 41, the foreign matter from the back surface of the belt having releasability is removed. It is transferred to the flocked portion of one driven roller 41 and is removed from the back surface of the belt.
【００３３】また、中間転写ベルト４４の裏面に異物が
付着していると、その裏面上の異物が従動ローラ４６位
置を通るときに、その外周の植毛部分に転移して中間転
写ベルト４４の裏面から除去される。If foreign matter adheres to the back surface of the intermediate transfer belt 44, the foreign matter on the back surface is transferred to a flocked portion on the outer periphery of the back surface of the intermediate transfer belt 44 when passing through the position of the driven roller 46. Removed from
【００３４】上述した実施の形態では、従動ローラ外周
の植毛部分に異物を付着してベルトの裏面をクリーニン
グしたが、たとえば従動ローラ外周に粘着性をもたせる
構成とし、粘着力で従動ローラの外周に異物を付着して
ベルトの裏面をクリーニングすることもできる。In the above-described embodiment, the back surface of the belt is cleaned by adhering foreign matter to the flocked portion on the outer periphery of the driven roller. The back surface of the belt can be cleaned by attaching foreign matter.
【００３５】なお、上述した実施の形態では、従動ロー
ラの１つにベルトのクリーニング機能をもたせたが、２
つ以上の従動ローラにそのようなクリーニング機能をも
たせるようにしてもよい。In the above-described embodiment, one of the driven rollers has a belt cleaning function.
One or more driven rollers may have such a cleaning function.
【００３６】さて、請求項２に記載の発明では、たとえ
ば上述した図示実施の形態に示すとおり、感光体ベルト
搬送装置１１の第１従動ローラ４１や中間転写ベルト搬
送装置１６の従動ローラ４６のように、従動ローラの少
なくとも１つに、その表面に植毛を施してクリーニング
機能をもたせてなる、ことを特徴とする。According to the second aspect of the present invention, for example, as shown in the above-described embodiment, the first driven roller 41 of the photosensitive belt conveying device 11 and the driven roller 46 of the intermediate transfer belt conveying device 16 are used. In addition, at least one of the driven rollers is provided with a flocked surface to have a cleaning function.
【００３７】また、請求項３に記載の発明では、たとえ
ば上述した図示実施の形態に示すとおり、感光体ベルト
１２や中間転写ベルト４４などのように、ベルトがその
表面に画像を形成するものである、ことを特徴とする。According to the third aspect of the present invention, the belt forms an image on its surface, such as the photosensitive belt 12 or the intermediate transfer belt 44, as shown in the illustrated embodiment. There is a feature.
【００３８】さらに、請求項４に記載の発明では、たと
えば画像転写後の用紙をのせて定着装置へ搬送する用紙
搬送ベルトなどのように、ベルトが用紙を搬送するもの
である、ことを特徴とする。Further, the invention according to claim 4 is characterized in that the belt conveys the sheet, such as a sheet conveying belt for conveying the image-transferred sheet to a fixing device. I do.
【００３９】そして、請求項５に記載の発明では、たと
えばモータの駆動力を感光体や搬送ローラや現像スリー
ブなどの回転体へ伝達する駆動伝達ベルトのように、ベ
ルトが駆動力を伝達するものである、ことを特徴とす
る。According to the fifth aspect of the present invention, the belt transmits the driving force, for example, a driving transmission belt for transmitting the driving force of a motor to a rotating body such as a photosensitive member, a conveying roller, and a developing sleeve. It is characterized by the following.
【００４０】[0040]
【発明の効果】したがって、請求項１および２に記載の
発明によれば、ベルト搬送時に、そのベルト裏面に紙粉
・埃・浮遊トナーなどの異物が付着したとしても、その
異物をクリーニング機能をもった従動ローラで除去する
ことから、ベルトの裏面に付着した異物が原因でベルト
がスリップすることを防止し、駆動ローラの駆動力を確
実にベルトに伝達することができる。Therefore, according to the first and second aspects of the present invention, even if foreign matter such as paper dust, dust, or floating toner adheres to the back surface of the belt during belt conveyance, the foreign matter has a cleaning function. Since the belt is removed by the driven roller, it is possible to prevent the belt from slipping due to foreign matter adhering to the back surface of the belt, and to reliably transmit the driving force of the driving roller to the belt.
【００４１】請求項３に記載の発明によれば、前記ベル
トがその表面に画像を形成するものであることから、画
像形成時に、ベルトのスリップが原因で画像ずれ等を発
生して画像品質を低下することを防止することができ
る。また、駆動ローラ表面とベルト裏面の間に入った異
物の塊で、たとえば感光体ベルトや中間転写ベルトの表
面に凸部を生じ、そのために異常画像などが発生して画
像品質が低下することを防止することもできる。According to the third aspect of the present invention, since the belt forms an image on its surface, an image shift or the like occurs at the time of image formation due to slippage of the belt, thereby reducing image quality. It can be prevented from lowering. Also, a lump of foreign matter between the front surface of the drive roller and the back surface of the belt may cause a projection on the surface of the photoreceptor belt or the intermediate transfer belt, for example. It can also be prevented.
【００４２】請求項４に記載の発明によれば、前記ベル
トが用紙を搬送するものであることから、常に一定速度
で用紙をスムーズに搬送し、画像品質の低下を防止する
ことができる。According to the fourth aspect of the present invention, since the belt conveys the paper, the paper can always be smoothly conveyed at a constant speed, and the deterioration of the image quality can be prevented.
【００４３】請求項５に記載の発明によれば、前記ベル
トが駆動力を伝達するものであることから、そのベルト
に駆動ローラの駆動力を確実に伝達し、画像品質の低下
を防止することができる。According to the fifth aspect of the present invention, since the belt transmits the driving force, the driving force of the driving roller is surely transmitted to the belt to prevent the image quality from deteriorating. Can be.
【図１】この発明の一実施の形態であるベルト搬送装置
を備えるカラーレーザプリンタで、そのプロセスカート
リッジの構成図である。FIG. 1 is a configuration diagram of a process cartridge of a color laser printer including a belt conveyance device according to an embodiment of the present invention.
【図２】そのカラーレーザプリンタ全体の概略構成図で
ある。FIG. 2 is a schematic configuration diagram of the entire color laser printer.
１２ 感光体ベルト ４０・４５ 駆動ローラ ４１・４６ 従動ローラ ４４ 中間転写ベルト 12 photoreceptor belt 40/45 drive roller 41/46 driven roller 44 intermediate transfer belt
Claims (5)
ーラ間にエンドレスのベルトを掛け渡し、そのベルトを
前記駆動ローラを駆動して搬送する画像形成装置のベル
ト搬送装置において、 前記従動ローラの少なくとも１つに、前記ベルトの裏面
に付着した異物を除去するクリーニング機能をもたせて
なる、画像形成装置のベルト搬送装置。1. A belt conveying device for an image forming apparatus, wherein an endless belt is stretched between a driving roller and at least one driven roller, and the belt is driven by driving the driving roller. Finally, a belt transport device for an image forming apparatus, which has a cleaning function for removing foreign matter adhering to the back surface of the belt.
の表面に植毛を施してクリーニング機能をもたせてな
る、請求項１に記載の画像形成装置のベルト搬送装置。2. The belt conveying device of the image forming apparatus according to claim 1, wherein at least one of the driven rollers is provided with a flocked surface to have a cleaning function.
ものである、請求項１または２に記載の画像形成装置の
ベルト搬送装置。3. The belt conveying device of the image forming apparatus according to claim 1, wherein the belt forms an image on a surface thereof.
る、請求項１または２に記載の画像形成装置のベルト搬
送装置。4. The belt conveying device of the image forming apparatus according to claim 1, wherein the belt conveys a sheet.
る、請求項１または２に記載の画像形成装置のベルト搬
送装置。5. The belt conveying device of the image forming apparatus according to claim 1, wherein the belt transmits a driving force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32356996A JP3527601B2 (en) | 1996-11-19 | 1996-11-19 | Belt conveyor for image forming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32356996A JP3527601B2 (en) | 1996-11-19 | 1996-11-19 | Belt conveyor for image forming equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10147447A true JPH10147447A (en) | 1998-06-02 |
| JP3527601B2 JP3527601B2 (en) | 2004-05-17 |
Family
ID=18156173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32356996A Expired - Fee Related JP3527601B2 (en) | 1996-11-19 | 1996-11-19 | Belt conveyor for image forming equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3527601B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6275875B1 (en) | 1991-04-15 | 2001-08-14 | Canon Kabushiki Kaisha | Electronic apparatus with version-up information having address information storing in EEPROM |
| US20170242370A1 (en) * | 2016-02-19 | 2017-08-24 | Noriaki TAKENAGA | Belt device and image forming apparatus incorporating same |
| JP2017167498A (en) * | 2016-02-19 | 2017-09-21 | 株式会社リコー | Belt device and image forming apparatus |
-
1996
- 1996-11-19 JP JP32356996A patent/JP3527601B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6275875B1 (en) | 1991-04-15 | 2001-08-14 | Canon Kabushiki Kaisha | Electronic apparatus with version-up information having address information storing in EEPROM |
| US20170242370A1 (en) * | 2016-02-19 | 2017-08-24 | Noriaki TAKENAGA | Belt device and image forming apparatus incorporating same |
| JP2017167498A (en) * | 2016-02-19 | 2017-09-21 | 株式会社リコー | Belt device and image forming apparatus |
| US10386754B2 (en) * | 2016-02-19 | 2019-08-20 | Ricoh Company, Ltd. | Belt device and image forming apparatus incorporating same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3527601B2 (en) | 2004-05-17 |
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