JPH10260589A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH10260589A JPH10260589A JP6367697A JP6367697A JPH10260589A JP H10260589 A JPH10260589 A JP H10260589A JP 6367697 A JP6367697 A JP 6367697A JP 6367697 A JP6367697 A JP 6367697A JP H10260589 A JPH10260589 A JP H10260589A
- Authority
- JP
- Japan
- Prior art keywords
- intermediate transfer
- transfer member
- toner
- image forming
- developer
- 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
- Cleaning In Electrography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、所定の極性に帯電
された顕像剤を飛翔させ記録紙に付着させて顕像剤像を
形成し、該顕像剤像を記録紙に定着させて画像を形成す
るプリンタ，ファクシミリ，複写機等の画像形成装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a developing method in which a developer charged to a predetermined polarity is made to fly and adhere to recording paper to form a developer image, and the developer image is fixed on the recording paper. The present invention relates to an image forming apparatus such as a printer, a facsimile, and a copying machine that forms an image.
【０００２】[0002]
【従来の技術】従来の顕像剤（トナー）を飛翔させて画
像を形成する画像形成装置は、特開平５−８４９６４号
公報に記載されているように、所定の極性に帯電された
トナーを担持するトナー担持部材と、該トナー担持部材
に対向する位置に設けられた背面電極部材と、前記トナ
ー剤担持部材と背面電極部材との間に位置し、トナーを
飛翔制御させるための制御電極部材と、前記制御電極部
材と背面電極部材との間にトナーの飛翔エネルギーを吸
収しトナーを一時的に保持する表面を有する中間転写部
材である中間転写ベルトとを備え、中間転写ベルトのベ
ルト基材の表面にＰＴＦＥ等のフッ素化合物の高分子多
孔質膜や、アルミナやジルコニア等のセラミックの多孔
質材料、また粉体化した金属材料を固定化した金属多孔
質材料等で構成した多孔質層を形成していた。2. Description of the Related Art A conventional image forming apparatus for forming an image by flying a developer (toner) uses a toner charged to a predetermined polarity as described in JP-A-5-84964. A toner carrying member for carrying, a back electrode member provided at a position facing the toner carrying member, and a control electrode member located between the toner carrying member and the back electrode member for controlling the toner to fly. And an intermediate transfer belt that is an intermediate transfer member having a surface that absorbs flying energy of the toner and temporarily holds the toner between the control electrode member and the back electrode member. On the surface of a polymer porous film of a fluorine compound such as PTFE, a ceramic porous material such as alumina or zirconia, or a metal porous material in which a powdered metal material is fixed. It was to form a porous layer.
【０００３】また、特開平７−１３２６４２号公報に記
載されているように、所定の極性に帯電されたトナーを
担持するトナー担持部材と、該トナー担持部材に対向す
る位置に設けられた背面電極部材と、前記トナー剤担持
部材と背面電極部材との間に位置し、トナーを飛翔制御
させるための制御電極部材と、前記制御電極部材と背面
電極部材との間にトナーの飛翔エネルギーを吸収しトナ
ーを一時的に保持する表面を有する中間転写部材である
中間転写ベルトとを備え、中間転写ベルト上の残留トナ
ーを除去するためのブレードクリーナを設けていた。As described in Japanese Patent Application Laid-Open No. Hei 7-132624, a toner carrying member for carrying a toner charged to a predetermined polarity and a back electrode provided at a position facing the toner carrying member. A control electrode member located between the member, the toner agent carrying member and the back electrode member, for controlling the toner to fly, and absorbing the flying energy of the toner between the control electrode member and the back electrode member. An intermediate transfer belt which is an intermediate transfer member having a surface for temporarily holding the toner, and a blade cleaner for removing residual toner on the intermediate transfer belt.
【０００４】[0004]
【発明が解決しようとする課題】上記の特開平５−８４
９６４号公報のものにおいては、中間転写ベルトの多孔
質層により飛翔してくるトナーを捕獲し、トナーの飛び
跳ねを防止して良好な画像形成を可能としているが、ト
ナーを確実に捕獲し飛び跳ねを防止するために多孔質層
の表面が凹凸形状となっており、この多孔質層の表面の
凹部へトナーが入り込んだ場合、中間転写ベルトのトナ
ー像を転写部材に転写したときに、トナーが完全に多孔
質層から転写されず残留する場合があり、このような場
合には、中間転写ベルトの凹部の残留トナーにより次の
画像形成工程時に飛翔してきたトナーが捕獲されず、ト
ナーが飛び跳ねてしまい画像乱れが生じる虞れがあっ
た。SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Laid-Open No. 5-84 is disclosed.
No. 964 discloses a method in which the flying toner is captured by the porous layer of the intermediate transfer belt to prevent the toner from jumping and to form a good image, but the toner is reliably captured and jumped. To prevent this, the surface of the porous layer has an irregular shape, and when toner enters the concave portion of the surface of the porous layer, the toner is completely removed when the toner image on the intermediate transfer belt is transferred to the transfer member. May not be transferred from the porous layer and may remain. In such a case, the toner that flies during the next image forming process is not captured by the residual toner in the concave portion of the intermediate transfer belt, and the toner jumps. There is a possibility that image disturbance may occur.
【０００５】また、特開平７−１３２６４２号公報のも
のにおいて、中間転写ベルトに残留したトナーをブレー
ドクリーナにより掻き取っているが、この中間転写ベル
トはその表面に多孔質層が形成されたものではないの
で、ブレードクリーナの掻き取りによって残留トナーは
取り除かれるが、このブレードクリーナを中間転写ベル
トの表面に多孔質層が形成されたものに用いても、多孔
質層表面が凹凸形状となっているため、凹部に入り込ん
だ残留トナーを取り除くことができず、逆にブレードク
リーナの当接により残留トナーを押し込み、残留トナー
の除去をより困難なものとしていた。In Japanese Patent Application Laid-Open No. Hei 7-132624, the toner remaining on the intermediate transfer belt is scraped off by a blade cleaner. However, this intermediate transfer belt does not have a porous layer formed on its surface. Therefore, the residual toner is removed by scraping off the blade cleaner.However, even when this blade cleaner is used for the one in which the porous layer is formed on the surface of the intermediate transfer belt, the porous layer surface has an uneven shape. Therefore, the residual toner that has entered the recess cannot be removed, and the residual toner is pushed in by the contact of the blade cleaner, which makes it more difficult to remove the residual toner.
【０００６】本発明の画像形成装置は上記の問題に鑑み
なされたものであり、クリーニング部材に顕像剤と逆極
性の電圧を印加し、クリーニング部材で中間転写部材に
残留した顕像剤を吸引し取り除くことにより、中間転写
部材の残留顕像剤を確実に取り除くことをを目的とした
ものである。The image forming apparatus of the present invention has been made in view of the above problem, and applies a voltage having a polarity opposite to that of the developer to the cleaning member, and sucks the developer remaining on the intermediate transfer member by the cleaning member. The purpose is to surely remove the residual developer from the intermediate transfer member.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに請求項１記載の画像形成装置は、所定の極性に帯電
された顕像剤を担持する顕像剤担持部材と、該顕像剤担
持部材に対向する位置に設けられた背面電極部材と、前
記顕像剤担持部材と背面電極部材との間に位置し、顕像
剤を飛翔制御させるための制御電極部材と、前記制御電
極部材と背面電極部材との間に顕像剤の飛翔エネルギー
を吸収し顕像剤を一時的に保持する表面を有する中間転
写部材と、該中間転写部材に接し当該中間転写部材の表
面に残留した顕像剤を取り除くために該顕像剤の帯電極
性と逆極性の電圧が印加されたクリーニング部材とを具
備している。According to a first aspect of the present invention, there is provided an image forming apparatus, comprising: a developer carrying member for carrying a developer charged to a predetermined polarity; A back electrode member provided at a position facing the developer carrying member, a control electrode member located between the developer carrying member and the back electrode member, and for controlling a developer to fly, the control electrode An intermediate transfer member having a surface for absorbing the flying energy of the developer and temporarily holding the developer between the member and the back electrode member, and remaining on the surface of the intermediate transfer member in contact with the intermediate transfer member A cleaning member to which a voltage having a polarity opposite to the charged polarity of the developer is applied to remove the developer.
【０００８】請求項２記載の画像形成装置は、前記クリ
ーニング部材を弾性部材もしくは導電性ブラシで形成し
ている。According to a second aspect of the present invention, the cleaning member is formed of an elastic member or a conductive brush.
【０００９】請求項３記載の画像形成装置は、前記中間
転写部材を巻き付けた供給部と、該供給部の中間転写部
材を巻き取る巻取部とを有している。According to a third aspect of the present invention, the image forming apparatus has a supply section around which the intermediate transfer member is wound, and a winding section for winding the intermediate transfer member of the supply section.
【００１０】[0010]
【発明の実施の形態】本発明の画像形成装置の実施形態
１を図とともに説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 of an image forming apparatus according to the present invention will be described with reference to the drawings.
【００１１】本発明の画像形成装置は図１に示すよう
に、１は所定の極性に帯電された顕像剤であるトナーを
担持するトナー担持体、２はトナーを収容しているトナ
ーボックス、３はトナーの飛翔を制御する制御電極、４
は背面電極、５は画像形成動作を制御するインターフェ
ース回路部とエンジンコントロール回路部で構成された
メインコントローラ基板，電源基板，高圧発生回路基板
が収納されているコントローラボックス、６は給紙トレ
イ、７は排紙トレイ、８は定着装置、９は制御電極３と
背面電極４との間に配設されトナーの飛翔エネルギーを
吸収しトナーを一時的に保持する表面を有する中間転写
部材、１０は中間転写部材９上に残留した残留トナーを
取り除くためのクリーニングユニット、１１は給紙トレ
イ６から給紙された記録紙１２を画像形成部分を通過し
定着装置８へ搬送する搬送ベルトである。As shown in FIG. 1, an image forming apparatus according to the present invention includes a toner carrier 1 for carrying a toner as a developer charged to a predetermined polarity, a toner box 2 containing a toner, 3 is a control electrode for controlling the flight of the toner, 4
Is a back electrode, 5 is a controller box containing an interface circuit unit for controlling an image forming operation and an engine control circuit unit, a power supply board, and a high voltage generation circuit board. 6 is a paper feed tray. Is an output tray, 8 is a fixing device, 9 is an intermediate transfer member disposed between the control electrode 3 and the back electrode 4 and having a surface for absorbing the flying energy of the toner and temporarily holding the toner. A cleaning unit 11 for removing residual toner remaining on the transfer member 9 is a transport belt that transports the recording paper 12 fed from the paper feed tray 6 to the fixing device 8 through an image forming portion.
【００１２】画像形成部は、トナー担持体１と、該トナ
ー担持体１に近接配置されトナーの通過が可能な多数の
通過孔３ａを有する制御電極３と、メインコントローラ
基板から送られてくる画像信号に応じて制御電極３に電
圧を印加する電圧源と、制御部と少なくとも記録紙１２
の厚みより大きい所定の間隙を有するように配置された
中間転写部材９と、中間転写部材９上のトナーを記録紙
１２に転写する背面電極４と、記録紙１２に形成された
トナー像を定着させるための定着装置８とから構成され
ている。The image forming section includes a toner carrier 1, a control electrode 3 disposed in close proximity to the toner carrier 1 and having a large number of passage holes 3 a through which toner can pass, and an image sent from the main controller board. A voltage source for applying a voltage to the control electrode 3 in accordance with a signal; a control unit;
, A back electrode 4 for transferring the toner on the intermediate transfer member 9 to the recording paper 12, and fixing the toner image formed on the recording paper 12. And a fixing device 8.
【００１３】上記構成の画像形成装置の動作は、図示し
ないホストコンピュータより出力された画像形成開始信
号をコントローラボックス５内のメインコントローラ基
板のインターフェース回路部が受信すると、インターフ
ェース回路部は画像形成装置の動作に関する制御信号を
検出し、エンジンコントロール回路部に送信する。エン
ジンコントロール回路部には画像形成装置の動作順序な
どが予めプログラムされており、このプログラムにした
がって順に命令を実行していく。The operation of the image forming apparatus having the above configuration is as follows. When the interface circuit section of the main controller board in the controller box 5 receives the image forming start signal output from the host computer (not shown), the interface circuit section of the image forming apparatus A control signal relating to the operation is detected and transmitted to the engine control circuit. The operation sequence of the image forming apparatus and the like are programmed in advance in the engine control circuit unit, and instructions are sequentially executed according to the program.
【００１４】そして、画像形成開始信号に応じてメイン
モータが駆動し、動力伝達手段で接続されたトナーボッ
クス２内のトナー担持体１である現像ローラが回転し、
トナーを撹拌するとともにトナー担持体１の表面に所定
の層厚でトナーを担持してトナー層が形成される。給紙
トレイ６にセットされた記録紙１２が図示しない給紙ロ
ーラにより１枚ずつ引き出されて画像形成部分へ送られ
る。Then, the main motor is driven in response to the image formation start signal, and the developing roller as the toner carrier 1 in the toner box 2 connected by the power transmission means is rotated.
The toner layer is formed by stirring the toner and carrying the toner on the surface of the toner carrier 1 with a predetermined layer thickness. The recording paper 12 set on the paper feed tray 6 is pulled out one by one by a paper feed roller (not shown) and sent to an image forming portion.
【００１５】画像形成部分に記録紙１２が送られると制
御電極３に画像信号に応じた制御電圧が印加され、トナ
ー担持体１に担持されているトナーが制御電極３の通過
孔３ａを通過し中間転写部材９へ飛翔され、中間転写部
材９にてこの飛翔されたトナーを一時的に保持する。When the recording paper 12 is sent to the image forming portion, a control voltage corresponding to the image signal is applied to the control electrode 3 so that the toner carried on the toner carrier 1 passes through the passage hole 3a of the control electrode 3. The flying toner is transported to the intermediate transfer member 9, and the flying toner is temporarily held by the intermediate transfer member 9.
【００１６】この中間転写部材９は図２及び図３に示す
ように、高分子材料や金属材料で形成された導電性のエ
ンドレスベルトである中間転写基材９ａと、該中間転写
基材９ａの表面に形成された多孔質層９ｂとから形成さ
れ、一対の駆動ローラ１３と従動ローラ１４により回転
駆動され、駆動ローラ１３を介して中間転写部材９全体
に電圧が誘起される。この多孔質層９ｂの表面の凹凸に
より飛翔されてきたトナーを補足し一時的に保持する。As shown in FIGS. 2 and 3, the intermediate transfer member 9 includes an intermediate transfer substrate 9a, which is a conductive endless belt formed of a polymer material or a metal material, and an intermediate transfer substrate 9a. The intermediate transfer member 9 is formed by the porous layer 9b formed on the surface and is rotationally driven by the pair of drive rollers 13 and the driven rollers 14, so that a voltage is induced on the entire intermediate transfer member 9 via the drive rollers 13. The toner flying by the unevenness of the surface of the porous layer 9b is captured and temporarily held.
【００１７】そして、中間転写部材９が駆動ローラ１３
にて回転駆動され、記録紙１２と対向する位置にトナー
が到達すると背面電極４に電圧が印加され、中間転写部
材９上のトナーが記録紙１２へ転写されてトナー像が形
成され、トナー像が形成された記録紙１２を定着装置８
へ搬送し、定着装置８にてトナー像を定着して記録紙１
２を排紙トレイ７へ排紙し画像形成動作を終了する。The intermediate transfer member 9 is driven by a driving roller 13
When the toner reaches a position facing the recording paper 12, a voltage is applied to the back electrode 4, the toner on the intermediate transfer member 9 is transferred to the recording paper 12, and a toner image is formed. The recording paper 12 on which is formed the fixing device 8
To the recording paper 1 by fixing the toner image with the fixing device 8.
2 is discharged to the discharge tray 7, and the image forming operation is completed.
【００１８】このとき、中間転写部材９上のトナーが記
録紙１２へ転写された後、中間転写部材９上に残留した
残留トナーをクリーニングユニット１０にてクリーニン
グする。At this time, after the toner on the intermediate transfer member 9 is transferred to the recording paper 12, the residual toner remaining on the intermediate transfer member 9 is cleaned by the cleaning unit 10.
【００１９】このクリーニングユニット１０は図４に示
すように、中間転写部材９に当接するトナーの帯電極性
と逆極性の電圧を印加されたクリーニングローラ１５
と、クリーニングローラ１５に付着したトナーを取り除
くクリスクレーパー１６と、クリスクレーパー１６によ
り取り除かれたトナーを収容するトナー受け１７とから
なり、クリーニングローラ１５に印加されている電圧に
より中間転写部材９上に残留している残留トナーを吸着
し中間転写部材９から取り除き、中間転写部材９をクリ
ーニングする。As shown in FIG. 4, the cleaning unit 10 includes a cleaning roller 15 to which a voltage having a polarity opposite to the charge polarity of the toner contacting the intermediate transfer member 9 is applied.
And a toner crapper 16 for accommodating the toner removed by the scriber craper 16 for removing the toner adhered to the cleaning roller 15. The remaining residual toner is absorbed and removed from the intermediate transfer member 9, and the intermediate transfer member 9 is cleaned.
【００２０】上記クリーニングローラ１５はゴム弾性の
ウレタン材料，発泡性のウレタン材料で形成され、中間
転写部材９の回転による進行方向と同一方向に回転され
る。また、上記クリーニングローラ１５は図５に示すよ
うに、ブラシローラ１７により形成されてもよく、ブラ
シローラの場合は中間転写部材９の回転による進行方向
と逆方向に回転される。そして、クリーニングローラ１
５には中間転写部材９の残留トナーのクリーニングを行
う時のみトナーと逆極性の電圧を印加する。The cleaning roller 15 is formed of a rubber-elastic urethane material or a foamed urethane material, and is rotated in the same direction as the intermediate transfer member 9 is rotated. The cleaning roller 15 may be formed by a brush roller 17 as shown in FIG. 5. In the case of a brush roller, the cleaning roller 15 is rotated in a direction opposite to a traveling direction by rotation of the intermediate transfer member 9. And the cleaning roller 1
To 5, a voltage having a polarity opposite to that of the toner is applied only when the residual toner on the intermediate transfer member 9 is cleaned.
【００２１】そして、中間転写部材９の表面が多孔質層
９ｂで構成されている場合は、クリーニングローラ１５
の周速は中間転写部材９の周速に比べそれほど速くする
必要はない。When the surface of the intermediate transfer member 9 is formed of the porous layer 9b, the cleaning roller 15
Does not need to be much higher than the peripheral speed of the intermediate transfer member 9.
【００２２】次に、トナー担持体１，制御電極３，中間
転写部材９，背面電極４，クリーニングローラ１５への
電圧の印加方法を図６とともに説明する。Next, a method of applying a voltage to the toner carrier 1, control electrode 3, intermediate transfer member 9, back electrode 4, and cleaning roller 15 will be described with reference to FIG.
【００２３】画像形成開始信号に応じて中間転写部材９
に電圧印加信号Ｔ３、クリーニングローラ１５に電圧印
加信号Ｔ２をオンする。また、メインモータが駆動し、
動力伝達手段で接続されたトナーボックス２内のトナー
担持体１である現像ローラが回転し、トナーを撹拌する
とともにその表面に所定の層厚を保持してトナー層が形
成される。次に、図示されていない給紙トレイにセット
された記録紙が給紙ローラにより１枚ずつ引き出されて
画像形成部分に送られる。The intermediate transfer member 9 according to an image formation start signal
Then, the voltage application signal T3 to the cleaning roller 15 is turned on. Also, the main motor is driven,
The developing roller, which is the toner carrier 1 in the toner box 2 connected by the power transmission means, rotates, agitates the toner, and forms a toner layer with a predetermined layer thickness on the surface thereof. Next, the recording paper set in a paper feed tray (not shown) is pulled out one by one by a paper feed roller and sent to an image forming portion.
【００２４】その後、画像信号に応じて制御電極３に電
圧印加信号Ｔ１をオンする。それにより、画像信号に応
じたトナーが制御電極３の通過孔３ａより飛翔し中間転
写部材９に到達保持される。中間転写部材９上のトナー
は中間転写部材９と背面電極４との間に搬送されてきた
記録紙１２に転写される。背面電極４の電圧印加信号Ｔ
４は、記録紙１２の先端部が背面電極４に搬送される直
前にオンされ、記録紙１２の後端部が背面電極４から排
出直後にオフされる。Thereafter, the voltage application signal T1 to the control electrode 3 is turned on in accordance with the image signal. Thereby, the toner corresponding to the image signal flies from the passage hole 3 a of the control electrode 3 and reaches the intermediate transfer member 9 and is held. The toner on the intermediate transfer member 9 is transferred to the recording paper 12 conveyed between the intermediate transfer member 9 and the back electrode 4. Voltage application signal T of back electrode 4
4 is turned on immediately before the leading end of the recording paper 12 is conveyed to the back electrode 4, and is turned off immediately after the trailing end of the recording paper 12 is discharged from the back electrode 4.
【００２５】中間転写部材９の電圧印加信号Ｔ３は記録
紙１２が背面電極４を通過した時点でオフする。記録紙
１２に転写された後の中間転写部材９上の残留トナーは
クリーニングユニット１０に運ばれ、クリーニングロー
ラ１５に印加されているクリーニング電圧にて中間転写
部材９上の残留トナーが吸着され除去される。そして、
中間転写部材９はクリーニングローラ１５にて確実に残
留トナーが除去されるように少なくとも１周以上回転し
た後、中間転写部材９は回転を停止する。The voltage application signal T3 of the intermediate transfer member 9 is turned off when the recording paper 12 passes through the back electrode 4. The residual toner on the intermediate transfer member 9 after being transferred to the recording paper 12 is carried to the cleaning unit 10, and the residual toner on the intermediate transfer member 9 is adsorbed and removed by the cleaning voltage applied to the cleaning roller 15. You. And
After the intermediate transfer member 9 has been rotated at least one or more times so that the residual toner is reliably removed by the cleaning roller 15, the rotation of the intermediate transfer member 9 is stopped.
【００２６】そして、中間転写部材９の回転停止と同時
にクリーニングローラ１５に印加していた電圧印加信号
Ｔ２をオフすると同時にクリーニングローラの回転も停
止し、クリーニング動作を終了する。Then, at the same time as the rotation of the intermediate transfer member 9 is stopped, the voltage application signal T2 applied to the cleaning roller 15 is turned off, and at the same time, the rotation of the cleaning roller is stopped, and the cleaning operation is completed.
【００２７】本発明の画像形成装置の実施形態２を図７
とともに説明する。図７は画像形成装置の停止状態を示
しており、中間転写部材９は巻き取り機構を備えた構造
となっており、中間転写部材９を巻き付けた供給部１９
と、供給部１９に巻き付けられた中間転写部材９を巻き
取る巻取部２０と、中間転写部材９を保持する中間転写
部材保持ドラム２１とからなり、中間転写部材保持ドラ
ム２１は一部に巻取開口を有した円筒状に形成され、こ
の巻取開口部分に供給部１９と巻取部２０が配設されて
いる。Embodiment 2 of the image forming apparatus of the present invention is shown in FIG.
It will be explained together. FIG. 7 shows a stopped state of the image forming apparatus. The intermediate transfer member 9 has a structure provided with a winding mechanism, and a supply unit 19 around which the intermediate transfer member 9 is wound.
A winding unit 20 for winding the intermediate transfer member 9 wound around the supply unit 19; and an intermediate transfer member holding drum 21 for holding the intermediate transfer member 9. The intermediate transfer member holding drum 21 is partially wound. It is formed in a cylindrical shape having a take-up opening, and a supply unit 19 and a take-up unit 20 are arranged at the take-up opening.
【００２８】そして、装置の停止時はクリーニングユニ
ット１０と対向する位置に巻取開口部分が停止し、クリ
ーニングユニット１０のクリーニングローラ１５が中間
転写部材９と当接しない状態で停止され、クリーニング
ローラ１５の変形を防止している。When the apparatus is stopped, the take-up opening portion is stopped at a position facing the cleaning unit 10, and the cleaning roller 15 of the cleaning unit 10 is stopped in a state where the cleaning roller 15 does not contact the intermediate transfer member 9. To prevent deformation.
【００２９】中間転写部材保持ドラム２１の保持機構に
ついて図８及び図９とともに説明すると、中間転写部材
保持ドラム２１は図示しない装置本体の一部に取り付け
てある軸受け２２にてドラム軸２３が回動可能に軸支さ
れている。装置本体の図示しないカバーを開けることに
より、中間転写部材保持ドラム２１は装置本体より取り
外し可能に配設されている。The holding mechanism of the intermediate transfer member holding drum 21 will be described with reference to FIGS. 8 and 9. The drum shaft 23 of the intermediate transfer member holding drum 21 is rotated by a bearing 22 attached to a part of an apparatus main body (not shown). It is supported as much as possible. By opening a cover (not shown) of the apparatus main body, the intermediate transfer member holding drum 21 is disposed so as to be removable from the apparatus main body.
【００３０】そして、中間転写部材保持ドラム２１は軸
受け２２にて軸支されたときに、中間転写部材保持ドラ
ム２１の一端部に設けられたドラムギア２４とドラム駆
動モータ２５にシャフト２６を介して設けられた駆動ギ
ア２７と歯合するようになっている。このドラム駆動モ
ータ２５は装置本体に配設されている。When the intermediate transfer member holding drum 21 is supported by a bearing 22, the drum gear 24 provided at one end of the intermediate transfer member holding drum 21 and a drum drive motor 25 are provided via a shaft 26. The driving gear 27 is engaged with the driving gear 27. The drum drive motor 25 is provided in the apparatus main body.
【００３１】中間転写部材９は図１０に示すように、中
間転写部材保持ドラム２１の周面に移動可能に巻き付け
られている。As shown in FIG. 10, the intermediate transfer member 9 is movably wound around the peripheral surface of the intermediate transfer member holding drum 21.
【００３２】そして、中間転写部材９の供給部１９は図
１１に示すように、供給軸２８に中間転写部材９が巻き
付けられており、この巻き付けられた中間転写部材９の
先端部には係止孔２９が設けられている。そして、中間
転写部材９の巻取部２０は図１２及び図１３に示すよう
に、巻取軸３０に中間転写部材９の先端部の係止孔２９
が係止される係止突起３１が設けられ、巻取軸３０の両
端には巻取部２０を中間転写部材保持ドラム２１に取り
付けるためのホルダー３２が設けられており、一方のホ
ルダー３２に後述する駆動モータのギアと歯合する巻取
軸ギア３３が設けられている。As shown in FIG. 11, the supply portion 19 of the intermediate transfer member 9 has an intermediate transfer member 9 wound around a supply shaft 28, and the leading end of the wound intermediate transfer member 9 is locked. A hole 29 is provided. As shown in FIGS. 12 and 13, the winding portion 20 of the intermediate transfer member 9 is provided with a locking hole 29 at the tip end of the intermediate transfer member 9.
Are provided, and at both ends of the winding shaft 30 are provided holders 32 for attaching the winding section 20 to the intermediate transfer member holding drum 21. One of the holders 32 will be described later. A take-up shaft gear 33 meshing with a gear of a drive motor to be driven is provided.
【００３３】中間転写部材９の供給部１９は図１４に示
すように、供給軸２８が中間転写部材保持ドラム２１の
側面に設けられた挿入孔３４に挿入され取り付けられて
いる。そして、中間転写部材９の巻取部２０は図１５に
示すように、巻取軸３０が中間転写部材保持ドラム２１
の側面に設けられた挿入孔３４に挿入され、巻取軸３０
の巻取軸ギア３３が中間転写部材保持ドラム２１の側面
から外側に位置し、中間転写部材保持ドラム２１の側面
外側に設けられた駆動モータ３５のギア３６と歯合して
いる。As shown in FIG. 14, the supply portion 19 of the intermediate transfer member 9 has a supply shaft 28 inserted and inserted into an insertion hole 34 provided on a side surface of the intermediate transfer member holding drum 21. Then, as shown in FIG. 15, the winding section 20 of the intermediate transfer member 9 has the winding shaft 30
Is inserted into an insertion hole 34 provided on the side surface of the winding shaft 30.
The take-up shaft gear 33 is located outside the side surface of the intermediate transfer member holding drum 21 and meshes with a gear 36 of a drive motor 35 provided outside the side surface of the intermediate transfer member holding drum 21.
【００３４】上記供給軸２８及び巻取軸３０は図１６に
示すように、中間転写部材保持ドラム２１の側面に設け
られた挿入溝３７から挿入孔３４まで挿入され、この位
置でホルダー３２をビス３８により中間転写部材保持ド
ラム２１に固定することによって取り付けられている。As shown in FIG. 16, the supply shaft 28 and the take-up shaft 30 are inserted from an insertion groove 37 provided on a side surface of the intermediate transfer member holding drum 21 to an insertion hole 34, and the holder 32 is screwed at this position. It is attached by fixing to the intermediate transfer member holding drum 21 by 38.
【００３５】上記構成の中間転写部材保持ドラム２１は
画像形成時に、ドラム駆動モータ２５の駆動力によって
回動され、中間転写部材保持ドラム２１が回動し中間転
写部材９によってトナーを捕捉し、記録紙にトナーを転
写させる。この画像形成時には、中間転写部材保持ドラ
ム２１が回動するのみで巻取部２０は回動駆動は行われ
ない。そして、中間転写部材９上のトナーが記録紙へ転
写された後の残留トナーがクリーニングユニット１０に
てクリーニングされる。When the image is formed, the intermediate transfer member holding drum 21 is rotated by the driving force of the drum drive motor 25, and the intermediate transfer member holding drum 21 is rotated to capture the toner by the intermediate transfer member 9 and record. Transfer toner to paper. At the time of image formation, only the intermediate transfer member holding drum 21 rotates and the winding unit 20 does not rotate. Then, the residual toner after the toner on the intermediate transfer member 9 is transferred to the recording paper is cleaned by the cleaning unit 10.
【００３６】上記動作が所定の枚数分の画像形成が行わ
れると、画像形成動作終了後もしくは次回の画像形成動
作開始前に、巻取部２０の巻取軸３０を駆動モータ３５
の駆動力により回動させ、使用後の中間転写部材９を巻
取軸３０へ巻き取り、中間転写部材保持ドラム２１上に
供給部１９に巻き付けられている未使用の中間転写部材
９を新しく移動させ、次回の画像形成動作を行う。When a predetermined number of images are formed in the above operation, the winding shaft 30 of the winding unit 20 is driven by the driving motor 35 after the image forming operation is completed or before the next image forming operation is started.
To rotate the used intermediate transfer member 9 around the winding shaft 30, and newly move the unused intermediate transfer member 9 wound around the supply unit 19 on the intermediate transfer member holding drum 21. Then, the next image forming operation is performed.
【００３７】このように、所定の枚数分の画像形成を行
った中間転写部材９を巻き取り、新たに中間転写部材９
を中間転写部材保持ドラム２１へ移動させることによ
り、中間転写部材９上に残留トナーが堆積することがな
く、しかも、クリーニング動作による中間転写部材９の
経時劣化を防止することができ、飛翔されてきたトナー
の飛び跳ねを防止し確実に中間転写部材９でトナーを捕
捉することができ、画質の劣化を防止することができ
る。In this way, the intermediate transfer member 9 on which a predetermined number of images have been formed is taken up, and a new intermediate transfer member 9 is formed.
Is moved to the intermediate transfer member holding drum 21, the residual toner does not accumulate on the intermediate transfer member 9, and it is possible to prevent the intermediate transfer member 9 from deteriorating with time due to the cleaning operation and to fly. The toner can be prevented from jumping and the toner can be reliably captured by the intermediate transfer member 9, and the image quality can be prevented from deteriorating.
【００３８】[0038]
【発明の効果】請求項１記載の画像形成装置は上記のよ
うな構成であるので、中間転写部材上の残留トナーをク
リーニング部材の吸着作用により確実に取り除くことが
でき、高画質の画像形成を行うことができる。According to the image forming apparatus of the present invention, the residual toner on the intermediate transfer member can be reliably removed by the attraction of the cleaning member, and a high quality image can be formed. It can be carried out.
【００３９】請求項２記載の画像形成装置は上記のよう
な構成であるので、中間転写部材のクリーニング時の損
傷及び化学変化を防止することができ、高画質の画像形
成を行うことができる。Since the image forming apparatus according to the second aspect has the above-described configuration, it is possible to prevent damage and chemical change during cleaning of the intermediate transfer member, and to form a high-quality image.
【００４０】請求項３記載の画像形成装置は上記のよう
な構成であるので、新しい中間転写部材を使用すること
ができ、中間転写部材上に残留トナーが堆積することが
なく、しかも、クリーニング動作による中間転写部材の
経時劣化を防止することができ、飛翔されてきたトナー
の飛び跳ねを防止し確実に中間転写部材でトナーを捕捉
することができ、画質の劣化を防止することができる。Since the image forming apparatus according to the third aspect has the above-described structure, a new intermediate transfer member can be used, no residual toner is deposited on the intermediate transfer member, and the cleaning operation is performed. Can prevent the intermediate transfer member from deteriorating with time, prevent the flying toner from jumping, reliably capture the toner by the intermediate transfer member, and prevent the image quality from deteriorating.
【図１】本発明の画像形成装置の実施形態１を示す概略
断面図である。FIG. 1 is a schematic sectional view showing Embodiment 1 of an image forming apparatus of the present invention.
【図２】図１の中間転写部材を示す断面図である。FIG. 2 is a sectional view showing the intermediate transfer member of FIG.
【図３】図２の中間転写部材の断面図である。FIG. 3 is a sectional view of the intermediate transfer member of FIG. 2;
【図４】図１のクリーニングユニットを示す拡大断面図
である。FIG. 4 is an enlarged sectional view showing the cleaning unit of FIG. 1;
【図５】図１のクリーニングユニットの他の例を示す拡
大断面図である。FIG. 5 is an enlarged sectional view showing another example of the cleaning unit of FIG. 1;
【図６】図１における各部の電圧印加状態を示す説明図
である。FIG. 6 is an explanatory diagram showing a voltage application state of each unit in FIG. 1;
【図７】本発明の画像形成装置の実施形態２を示す概略
断面図である。FIG. 7 is a schematic sectional view showing Embodiment 2 of the image forming apparatus of the present invention.
【図８】図７の中間転写部材保持ドラムの保持状態を示
す断面図である。FIG. 8 is a cross-sectional view illustrating a holding state of the intermediate transfer member holding drum of FIG. 7;
【図９】図７の中間転写部材保持ドラムの駆動部を示す
斜視図である。FIG. 9 is a perspective view illustrating a driving unit of the intermediate transfer member holding drum of FIG. 7;
【図１０】図７の中間転写部材の断面図である。FIG. 10 is a sectional view of the intermediate transfer member of FIG. 7;
【図１１】図７の中間転写部材の供給部を示す斜視図で
ある。FIG. 11 is a perspective view illustrating a supply unit of the intermediate transfer member of FIG. 7;
【図１２】図７の中間転写部材の巻取部を示す斜視図で
ある。FIG. 12 is a perspective view showing a winding section of the intermediate transfer member of FIG. 7;
【図１３】図７の中間転写部材の巻取部の拡大断面図で
ある。FIG. 13 is an enlarged sectional view of a winding section of the intermediate transfer member of FIG. 7;
【図１４】中間転写部材の供給部の中間転写部材保持ド
ラムへの取り付け状態を示す断面図である。FIG. 14 is a cross-sectional view illustrating a state in which a supply unit of the intermediate transfer member is attached to an intermediate transfer member holding drum.
【図１５】中間転写部材の巻取部の中間転写部材保持ド
ラムへの取り付け状態を示す断面図である。FIG. 15 is a cross-sectional view illustrating a state in which a winding section of the intermediate transfer member is attached to an intermediate transfer member holding drum.
【図１６】中間転写部材の供給部及び巻取部の中間転写
部材保持ドラムへの固定状態を示す説明図である。FIG. 16 is an explanatory diagram illustrating a state in which a supply unit and a winding unit of the intermediate transfer member are fixed to the intermediate transfer member holding drum.
１ トナー担持体 ２ トナーボックス ３ 制御電極 ４ 背面電極 ８ 定着装置 ９ 中間転写部材 ９ａ 中間転写基材 ９ｂ 多孔質層 １０ クリーニングユニット １５ クリーニングローラ １９ 供給部 ２０ 巻取部 ２１ 中間転写部材保持ドラム REFERENCE SIGNS LIST 1 toner carrier 2 toner box 3 control electrode 4 back electrode 8 fixing device 9 intermediate transfer member 9a intermediate transfer base material 9b porous layer 10 cleaning unit 15 cleaning roller 19 supply unit 20 winding unit 21 intermediate transfer member holding drum
Claims (3)
る顕像剤担持部材と、 該顕像剤担持部材に対向する位置に設けられた背面電極
部材と、 前記顕像剤担持部材と背面電極部材との間に位置し、顕
像剤を飛翔制御させるための制御電極部材とを備えた画
像形成装置において、 前記制御電極部材と背面電極部材との間に顕像剤の飛翔
エネルギーを吸収し顕像剤を一時的に保持する表面を有
する中間転写部材と、 該中間転写部材に接し当該中間転写部材の表面に残留し
た顕像剤を取り除くために該顕像剤の帯電極性と逆極性
の電圧が印加されたクリーニング部材とを具備したこと
を特徴とする画像形成装置。1. A developer carrying member for carrying a developer charged to a predetermined polarity, a back electrode member provided at a position facing the developer carrying member, and the developer carrying member. An image forming apparatus, comprising: a control electrode member positioned between the control electrode member and the back electrode member for controlling flight of the developer; An intermediate transfer member having a surface that absorbs and temporarily retains the developer, and a charge polarity of the developer that is in contact with the intermediate transfer member and removes the developer remaining on the surface of the intermediate transfer member. An image forming apparatus comprising: a cleaning member to which a voltage having a reverse polarity is applied.
は導電性ブラシで形成したことを特徴とする請求項１記
載の画像形成装置。2. The image forming apparatus according to claim 1, wherein said cleaning member is formed of an elastic member or a conductive brush.
と、該供給部の中間転写部材を巻き取る巻取部とを有し
たことを特徴とする請求項１記載の画像形成装置。3. The image forming apparatus according to claim 1, further comprising a supply unit around which the intermediate transfer member is wound, and a winding unit that winds the intermediate transfer member of the supply unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6367697A JPH10260589A (en) | 1997-03-18 | 1997-03-18 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6367697A JPH10260589A (en) | 1997-03-18 | 1997-03-18 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10260589A true JPH10260589A (en) | 1998-09-29 |
Family
ID=13236211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6367697A Pending JPH10260589A (en) | 1997-03-18 | 1997-03-18 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10260589A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10036991B2 (en) | 2016-10-26 | 2018-07-31 | Fuji Xerox Co., Ltd. | Cleaning blade and image forming apparatus |
| US10088780B2 (en) | 2016-10-26 | 2018-10-02 | Fuji Xerox Co., Ltd. | Transfer device and image forming apparatus |
| US11800281B2 (en) | 2018-06-01 | 2023-10-24 | Shure Acquisition Holdings, Inc. | Pattern-forming microphone array |
-
1997
- 1997-03-18 JP JP6367697A patent/JPH10260589A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10036991B2 (en) | 2016-10-26 | 2018-07-31 | Fuji Xerox Co., Ltd. | Cleaning blade and image forming apparatus |
| US10088780B2 (en) | 2016-10-26 | 2018-10-02 | Fuji Xerox Co., Ltd. | Transfer device and image forming apparatus |
| US11800281B2 (en) | 2018-06-01 | 2023-10-24 | Shure Acquisition Holdings, Inc. | Pattern-forming microphone array |
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