JPH0627835A - Transferring and fixing device - Google Patents

Transferring and fixing device

Info

Publication number
JPH0627835A
JPH0627835A JP4182085A JP18208592A JPH0627835A JP H0627835 A JPH0627835 A JP H0627835A JP 4182085 A JP4182085 A JP 4182085A JP 18208592 A JP18208592 A JP 18208592A JP H0627835 A JPH0627835 A JP H0627835A
Authority
JP
Japan
Prior art keywords
transfer
transfer belt
roller
fixing
rollers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4182085A
Other languages
Japanese (ja)
Inventor
Ryuji Watariki
龍司 渡木
Akitaka Okazaki
哲卓 岡崎
Yoshio Fujita
恵生 藤田
Yuki Ito
由起 伊東
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Priority to JP4182085A priority Critical patent/JPH0627835A/en
Publication of JPH0627835A publication Critical patent/JPH0627835A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00135—Handling of parts of the apparatus
    • G03G2215/00139—Belt
    • G03G2215/00143—Meandering prevention
    • G03G2215/00151—Meandering prevention using edge limitations

Landscapes

  • Paper Feeding For Electrophotography (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Fixing For Electrophotography (AREA)

Abstract

PURPOSE:To provide a transferring/fixing device capable of controlling the deviation and meandering of a transfer belt at the time of endlessly rotating. CONSTITUTION:In a transferring/fixing device D1, one correcting member 7 for moving the transfer belt 5 under rotation toward a flange 6 is provided on the inside of the transfer belt 5. The correcting member 7 is constituted so as to provide one supporting shaft 8, and five rollers 9 rotatably attached to the supporting shaft 8. The transfer belt 5 finished to pass between a photosensitive body 1 and a transfer roller 2, is moved to a fixing part having a pressure roller 3 and a thermal roller 4. At this time, five rollers 9 of the correcting member 7 are rubbed on the inner surface of the transfer belt 5, so that the transfer belt 5 is deviated in a direction where the flange 6 exists, by these rollers 9, before the transfer belt enters the fixing part.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は転写・定着装置に関し、
さらに詳しくは、複写機やプリンタなどの画像形成装置
に組み込まれ、感光体上のトナー像を転写・定着する転
写・定着装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer / fixing device,
More specifically, the present invention relates to a transfer / fixing device incorporated in an image forming apparatus such as a copying machine or a printer to transfer / fix a toner image on a photoconductor.

【０００２】[0002]

【従来の技術】従来、画像形成装置に組み込まれる転写
・定着装置として、中間転写体と称される、耐熱性樹脂
からなるエンドレス状の転写ベルトを用いたものが提案
されている。すなわち、その転写・定着装置は、感光体
上のトナー像を転写ベルト上に転写した後、定着部にお
いて画像形成用紙を転写ベルトのトナー面に当接させ
て、用紙への転写・定着を行うものである。2. Description of the Related Art Conventionally, as a transfer / fixing device incorporated in an image forming apparatus, there has been proposed one using an endless transfer belt made of a heat resistant resin, which is called an intermediate transfer member. That is, the transfer / fixing device transfers the toner image on the photoconductor onto the transfer belt, and then brings the image forming paper into contact with the toner surface of the transfer belt at the fixing unit to perform the transfer / fixing on the paper. It is a thing.

【０００３】このような転写・定着装置にあっては、中
間転写体である転写ベルトは、通常、厚さが１００〜２
００μｍ前後の耐熱性樹脂フィルムから構成される。こ
の転写ベルトは、感光体の近傍に配された転写用ローラ
と、定着部に配された定着用ローラとに、エンドレス回
転可能に掛け渡され、転写用ローラにより感光体に圧接
される。In such a transfer / fixing device, the transfer belt, which is an intermediate transfer member, usually has a thickness of 100 to 2
It is composed of a heat-resistant resin film having a thickness of about 00 μm. The transfer belt is endlessly rotatably wound around a transfer roller arranged near the photoconductor and a fixing roller arranged in the fixing unit, and is pressed against the photoconductor by the transfer roller.

【０００４】[0004]

【発明が解決しようとする課題】このような転写・定着
装置にあっては、転写ベルトは、上記のようにきわめて
薄く、ローラ軸に平行な方向からの衝撃に弱いため、転
写用ローラと定着用ローラとの間でエンドレス回転する
うちに、各ローラの一端寄りへ移動したり（「片寄
り」）、各ローラ軸に平行な方向へ揺れ動いたり（「蛇
行」）する傾向があった。In such a transfer / fixing apparatus, since the transfer belt is extremely thin as described above and is weak against an impact from a direction parallel to the roller axis, the transfer belt and the fixing roller are fixed. While rotating endlessly with the work rollers, there was a tendency to move toward one end of each roller (“deviation”) or to sway in a direction parallel to each roller axis (“serpentine”).

【０００５】本発明は上記の実情に鑑みてなされたもの
であり、その目的は、エンドレス回転時における転写ベ
ルトの片寄りや蛇行を抑制することのできる転写・定着
装置を提供することにある。The present invention has been made in view of the above situation, and an object thereof is to provide a transfer / fixing device capable of suppressing deviation and meandering of the transfer belt during endless rotation.

【０００６】[0006]

【課題を解決するための手段およびその作用】本発明に
係る転写・定着装置は以下の２つの形態をとる。その第
１の形態は、感光体の近傍に配された転写用ローラと、
定着部に配された定着用ローラと、転写用ローラおよび
定着用ローラにエンドレス回転可能に掛け渡され、転写
用ローラにより感光体に圧接される中間転写体としての
転写ベルトとを備え、さらに、転写用ローラおよび定着
用ローラのうちの少なくとも一方のローラの端部に設け
られ、転写ベルトの幅方向の位置を決めるフランジと、
転写ベルトの内側で各ローラ軸に対して所定の傾斜角を
保って設けられた少なくとも１つの支持軸およびこの支
持軸に回転可能に取り付けられ転写ベルトの内面に摺接
しながら転写ベルトとともに回転する複数のコロを有
し、回転中の転写ベルトを前記フランジへ向けて寄せる
少なくとも１つの補正部材とを具備してなる転写・定着
装置である。Means for Solving the Problem and Its Action The transfer / fixing device according to the present invention has the following two forms. The first form is a transfer roller arranged near the photoconductor,
A fixing roller arranged in the fixing unit, a transfer roller and a transfer belt as an intermediate transfer member that is wound around the fixing roller in an endless manner so as to be rotatable endlessly, and is pressed against the photoconductor by the transfer roller. A flange provided at an end portion of at least one of the transfer roller and the fixing roller, for determining a position in the width direction of the transfer belt,
At least one support shaft provided inside the transfer belt with a predetermined inclination angle with respect to each roller shaft, and a plurality of support shafts rotatably mounted on the support shaft and rotating with the transfer belt while slidingly contacting the inner surface of the transfer belt. And a at least one correction member that brings the rotating transfer belt toward the flange.

【０００７】すなわち、第１の転写・定着装置は、転写
用ローラおよび定着用ローラのうちの少なくとも一方の
ローラの端部にフランジを設けるとともに、転写ベルト
の内側に特徴ある補正部材を少なくとも１つ設けたこと
を要旨とする。この補正部材は、各ローラ軸に対して所
定の傾斜角を保って設けられた少なくとも１つの支持軸
と、この支持軸に回転可能に取り付けられ転写ベルトの
内面に摺接しながら転写ベルトとともに回転する複数の
コロとを有してなる。That is, the first transfer / fixing device has a flange at the end of at least one of the transfer roller and the fixing roller, and at least one characteristic correction member inside the transfer belt. The main point is the provision. The correction member is provided with at least one support shaft provided with a predetermined inclination angle with respect to each roller shaft, and is rotatably attached to the support shaft and rotates together with the transfer belt while slidingly contacting the inner surface of the transfer belt. It has a plurality of rollers.

【０００８】補正部材は、その複数のコロが転写ベルト
の内面に摺接しながら転写ベルトとともに回転する。す
ると、補正部材の支持軸が転写用ローラおよび定着用ロ
ーラに対して所定角度だけ傾斜しているので、複数のコ
ロが、回転中の転写ベルトを前記フランジへ向けて寄せ
るように機能する。これによって、転写ベルトの片寄り
や蛇行を抑制する。The correction member rotates together with the transfer belt while the plurality of rollers are in sliding contact with the inner surface of the transfer belt. Then, since the support shaft of the correction member is inclined by a predetermined angle with respect to the transfer roller and the fixing roller, the plurality of rollers function to bring the rotating transfer belt toward the flange. This suppresses deviation and meandering of the transfer belt.

【０００９】ここで、フランジは、転写用ローラおよび
定着用ローラの両方に設けられてもよく、いずれか一方
にだけ設けられてもよい。また、このフランジは。各ロ
ーラの両方の端部に設けられてもよく、いずれか一方の
端部にだけ設けられてもよい。Here, the flange may be provided on both the transfer roller and the fixing roller, or may be provided on only one of them. Also, this flange. It may be provided on both ends of each roller, or may be provided on only one of the ends.

【００１０】補正部材の支持軸は、少なくとも１つ設け
られる。補正部材のコロは、１つの支持軸に対して複数
個、たとえば４〜１０個設けられる。これらのコロの形
状はたとえば、そろばんの珠のように断面形状が略ひし
形のもの、断面形状が略楕円形のもの、断面形状が略長
方形のものなどが用いられる。At least one support shaft for the correction member is provided. A plurality of correction member rollers, for example, 4 to 10 rollers, are provided for one support shaft. As the shape of these rollers, for example, those having a substantially rhombic cross-section such as beads of an abacus, those having a substantially elliptical cross-section, and those having a substantially rectangular cross-section are used.

【００１１】補正部材の支持軸の、転写用ローラおよび
定着用ローラ（両ローラは互いに平行）に対する傾斜角
は、２〜１５度が好ましい。２度未満では、回転中の転
写ベルトを前記フランジへ向けて寄せることができず、
一方、１５度を超えるとコロがスムースに回転しないか
らである。The inclination angle of the support shaft of the correction member with respect to the transfer roller and the fixing roller (both rollers are parallel to each other) is preferably 2 to 15 degrees. If it is less than 2 degrees, the rotating transfer belt cannot be pulled toward the flange,
On the other hand, if it exceeds 15 degrees, the roller does not rotate smoothly.

【００１２】本発明の第２の形態は、感光体の近傍に配
された転写用ローラと、定着部に配された定着用ローラ
と、転写用ローラおよび定着用ローラにエンドレス回転
可能に掛け渡され、転写用ローラにより感光体に圧接さ
れる中間転写体としての転写ベルトとを備え、さらに、
転写ベルトの内側で転写ベルトの進行方向に向かってハ
字状にかつ転写ベルトの幅中心線に対して線対称位置に
設けられた少なくとも一組の支持軸およびこれらの支持
軸に回転可能に取り付けられ転写ベルトの内面に摺接し
ながら転写ベルトとともに回転する複数のコロを有し、
回転中の転写ベルトを幅方向へ広げる少なくとも一組の
補正部材を具備してなる転写・定着装置である。According to a second aspect of the present invention, a transfer roller disposed in the vicinity of the photosensitive member, a fixing roller disposed in a fixing portion, and a transfer roller and a fixing roller are rotatably and endlessly wound around the transfer roller and the fixing roller. And a transfer belt as an intermediate transfer member that is brought into pressure contact with the photosensitive member by the transfer roller.
Inside the transfer belt, at least one set of support shafts provided in a V shape in the traveling direction of the transfer belt and at a position symmetrical to the width center line of the transfer belt, and rotatably attached to these support shafts. Has a plurality of rollers that rotate with the transfer belt while slidingly contacting the inner surface of the transfer belt,
The transfer / fixing device includes at least one set of correction members for spreading the rotating transfer belt in the width direction.

【００１３】すなわち、第２の転写・定着装置は、転写
ベルトの内側に特徴ある補正部材を少なくとも一組設け
たことを要旨とする。この補正部材は、転写ベルトの進
行方向に向かってハ字状にかつ転写ベルトの幅中心線に
対して線対称位置に設けられた少なくとも１つの支持軸
と、これらの支持軸に回転可能に取り付けられ転写ベル
トの内面に摺接しながら転写ベルトとともに回転する複
数のコロとを有してなる。That is, the gist of the second transfer / fixing device is that at least one set of characteristic correction members is provided inside the transfer belt. The correction member is provided with at least one support shaft provided in a V shape in the traveling direction of the transfer belt and at a position symmetrical with respect to the width center line of the transfer belt, and rotatably attached to these support shafts. And a plurality of rollers that rotate with the transfer belt while slidingly contacting the inner surface of the transfer belt.

【００１４】補正部材は、その複数のコロが転写ベルト
の内面に摺接しながら転写ベルトとともに回転する。す
ると、補正部材の支持軸が転写ベルトの進行方向に向か
ってハ字状にかつ転写ベルトの幅中心線に対して線対称
位置に設けられているので、複数のコロが、回転中の転
写ベルトを幅方向へ広げるように機能する。これによっ
て、転写ベルトの片寄りや蛇行を抑制する。The correction member rotates together with the transfer belt while the plurality of rollers are in sliding contact with the inner surface of the transfer belt. Then, since the support shaft of the correction member is provided in a V shape in the traveling direction of the transfer belt and at a position symmetrical with respect to the width center line of the transfer belt, a plurality of rollers are formed in the rotating transfer belt. Function to widen in the width direction. This suppresses deviation and meandering of the transfer belt.

【００１５】補正部材の支持軸は、少なくとも一組設け
られる。補正部材のコロは、１つの支持軸に対して複数
個、たとえば２〜５個設けられる。これらのコロの形状
は上記と同様である。At least one set of support shafts for the correction member is provided. A plurality of rollers of the correction member are provided for one support shaft, for example, 2 to 5 rollers. The shapes of these rollers are the same as above.

【００１６】[0016]

【実施例】以下、図面に示す２つの実施例に基づいて本
発明を詳述する。なお、これらによって本発明が限定さ
れるものではない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to two embodiments shown in the drawings. The present invention is not limited to these.

【００１７】実施例１ 図１および図２において、複写機に組み込まれた転写・
定着装置Ｄ1 は、ドラム状感光体１の直下に配された転
写用ローラ２と、加圧ローラ３とともに定着用ローラを
構成する熱ローラ４と、略水平にかつ転写用ローラ２お
よび熱ローラ４にエンドレス回転可能に掛け渡され、転
写用ローラ２により感光体１に圧接される中間転写体と
しての転写ベルト５とを備えている。Embodiment 1 In FIGS. 1 and 2, a transfer / printing device incorporated in a copying machine is used.
The fixing device D 1 includes a transfer roller 2 disposed immediately below the drum-shaped photosensitive member 1, a heat roller 4 that constitutes a fixing roller together with the pressure roller 3, a transfer roller 2 and a heat roller that are substantially horizontal. 4, a transfer belt 5 as an intermediate transfer member, which is rotatably wound around endlessly and is pressed against the photosensitive member 1 by the transfer roller 2.

【００１８】転写ベルト５は、ポリイミドなどの耐熱性
樹脂フィルムにシリコーンなどでコーティングを施した
ものである。感光体１および加圧ローラ３は、時計回り
方向へ回転する。転写用ローラ２および熱ローラ４は反
時計回り方向へ回転する。そして、転写ベルト５は各図
の矢印の方向へ回転する。なお、図１において１１は複
写用紙であり、２点鎖線は複写用紙１１の動きの状態を
示している。The transfer belt 5 is a heat resistant resin film such as polyimide coated with silicone or the like. The photoconductor 1 and the pressure roller 3 rotate in the clockwise direction. The transfer roller 2 and the heat roller 4 rotate counterclockwise. Then, the transfer belt 5 rotates in the direction of the arrow in each drawing. In FIG. 1, reference numeral 11 denotes a copy sheet, and the chain double-dashed line indicates the state of movement of the copy sheet 11.

【００１９】熱ローラ４の一方端部（手前側の端部）に
は、熱ローラ４の直径よりも大径の円盤状フランジ６が
設けられている。このフランジ６は、転写ベルト５の幅
方向の位置を決める機能を有している。A disc-shaped flange 6 having a diameter larger than the diameter of the heat roller 4 is provided at one end (end on the front side) of the heat roller 4. The flange 6 has a function of determining the position of the transfer belt 5 in the width direction.

【００２０】転写ベルト５の内側には、回転中の転写ベ
ルト５をフランジ６へ向けて寄せるための１つの補正部
材７が設けられている。この補正部材７は、１つの支持
軸８と、この支持軸８に回転可能に取り付けられた５個
のコロ９とを有してなる。Inside the transfer belt 5, there is provided one correction member 7 for pulling the rotating transfer belt 5 toward the flange 6. The correction member 7 has one support shaft 8 and five rollers 9 rotatably attached to the support shaft 8.

【００２１】すなわち、支持軸８は水平であって、転写
用ローラ２および熱ローラ４（両ローラは互いに平行）
に対して１３度だけ傾斜した状態で、その両端が複写機
の側板（図示略）に取り付けられている。その傾斜の向
きは、図１および図２に示すように、支持軸８の奥側の
端が、手前側の端よりも熱ローラ４により近くなる向き
である。支持軸８に取り付けられた５個のコロ９は、断
面形状がそろばんの珠のように略ひし形のものであり、
支持軸８に対して略直角方向に回転するようにされてい
る。これらのコロ９は、転写ベルト５の内面に摺接しな
がら転写ベルト５の回転に従って回転する。That is, the support shaft 8 is horizontal, and the transfer roller 2 and the heat roller 4 (both rollers are parallel to each other).
Both ends are attached to side plates (not shown) of the copying machine in a state of being inclined by 13 degrees with respect to. As shown in FIGS. 1 and 2, the inclination direction is such that the rear end of the support shaft 8 is closer to the heat roller 4 than the front end thereof. The five rollers 9 attached to the support shaft 8 have a substantially rhombic cross-section like an abacus beads,
It is adapted to rotate in a direction substantially perpendicular to the support shaft 8. These rollers 9 rotate according to the rotation of the transfer belt 5 while slidingly contacting the inner surface of the transfer belt 5.

【００２２】この転写・定着装置Ｄ1 にあっては、感光
体１と転写用ローラ２の間を通過した転写ベルト５は、
加圧ローラ３と熱ローラ４のある定着部へ移動する。こ
のとき、補正部材７の５個のコロ９が転写ベルト５の内
面に摺接しているので、転写ベルト５は、定着部へ入る
前にこれらのコロ９によりフランジ６のある方向へ向か
って寄るようになる。これにより、転写ベルト５の片寄
りや蛇行が抑制される。In this transfer / fixing device D 1 , the transfer belt 5 passing between the photoconductor 1 and the transfer roller 2 is
The pressure roller 3 and the heat roller 4 move to the fixing unit. At this time, since the five rollers 9 of the correction member 7 are in sliding contact with the inner surface of the transfer belt 5, the transfer belt 5 moves toward the direction in which the flange 6 is present by these rollers 9 before entering the fixing portion. Like As a result, deviation and meandering of the transfer belt 5 are suppressed.

【００２３】実施例２ 図３および図４において、複写機に組み込まれた転写・
定着装置Ｄ2 は、実施例１の転写・定着装置Ｄ1 と同様
に、転写用ローラ２、熱ローラ４および転写ベルト５を
備えている。なお、図３において１１は複写用紙であ
り、２点鎖線は複写用紙１１の動きの状態を示してい
る。Embodiment 2 Referring to FIGS. 3 and 4, the transfer / transfer incorporated in the copying machine is performed.
The fixing device D 2 includes a transfer roller 2, a heat roller 4, and a transfer belt 5, like the transfer / fixing device D 1 of the first embodiment. In FIG. 3, reference numeral 11 is a copy sheet, and the chain double-dashed line shows the state of movement of the copy sheet 11.

【００２４】転写ベルト５の内側には、回転中の転写ベ
ルト５を幅方向へ広げるための２個一組の補正部材１７
が設けられている。これらの補正部材１７はそれぞれ、
１つの支持軸１８と、支持軸１８に回転可能に取り付け
られた３個のコロ１９とを有してなる。Inside the transfer belt 5, a set of two correction members 17 for expanding the rotating transfer belt 5 in the width direction.
Is provided. Each of these correction members 17
It has one support shaft 18 and three rollers 19 rotatably attached to the support shaft 18.

【００２５】すなわち、各支持軸１８は水平であって、
その両端が複写機の側板（図示略）に取り付けられてい
る。２つの支持軸１８は、互いに長さおよび直径が等し
く、転写ベルト５の進行方向に向かってハ字状に、かつ
転写ベルト５の幅中心線に対して線対称位置に設けられ
ている。That is, each support shaft 18 is horizontal,
Both ends thereof are attached to side plates (not shown) of the copying machine. The two support shafts 18 are equal in length and diameter to each other, and are provided in a V shape in the traveling direction of the transfer belt 5 and at line symmetrical positions with respect to the width center line of the transfer belt 5.

【００２６】ハ字状に設けられた２つの支持軸１８の、
転写用ローラ２および熱ローラ４（両ローラは互いに平
行）に対する傾斜角は、いずれも１０度である。その傾
斜の向きは、図１および図２に示すように、各支持軸１
８における転写ベルト５の幅中心線側の端が、手前側ま
たは奥側の端よりも熱ローラ４により近くなる向きであ
る。Of the two support shafts 18 provided in a V shape,
The inclination angle with respect to the transfer roller 2 and the heat roller 4 (both rollers are parallel to each other) is 10 degrees. As shown in FIGS. 1 and 2, the direction of the inclination is such that each support shaft 1
The end of the transfer belt 5 on the width center line side in 8 is closer to the heat roller 4 than the end on the front side or the back side.

【００２７】２つの支持軸１８に取り付けられた合計６
個のコロ１９はいずれも、断面形状が略楕円形のもので
あり、支持軸１８に対して略直角方向に回転するように
されている。これらのコロ１９は、転写ベルト５の内面
に摺接しながら転写ベルト５の回転に従って回転する。A total of 6 mounted on the two support shafts 18
Each of the rollers 19 has a substantially elliptical cross section, and is configured to rotate in a direction substantially perpendicular to the support shaft 18. These rollers 19 rotate according to the rotation of the transfer belt 5 while slidingly contacting the inner surface of the transfer belt 5.

【００２８】この転写・定着装置Ｄ2 にあっては、感光
体１と転写用ローラ２の間を通過した転写ベルト５は、
加圧ローラ３と熱ローラ４のある定着部へ移動する。こ
のとき、一組の補正部材１７の６個のコロ１９が転写ベ
ルト５の内面に摺接しているので、転写ベルト５は、定
着部へ入る前にこれらのコロ１９により幅方向へ広げら
れるようになる。これにより、転写ベルト５の片寄りや
蛇行が抑制される。In the transfer / fixing device D 2 , the transfer belt 5 passing between the photoconductor 1 and the transfer roller 2 is
The pressure roller 3 and the heat roller 4 move to the fixing unit. At this time, since the six rollers 19 of the set of correction members 17 are in sliding contact with the inner surface of the transfer belt 5, the transfer belt 5 is expanded in the width direction by these rollers 19 before entering the fixing portion. become. As a result, deviation and meandering of the transfer belt 5 are suppressed.

【００２９】[0029]

【発明の効果】本発明の請求項１記載の転写・定着装置
は、上記のように構成されているので、感光体と転写用
ローラの間を通過した転写ベルトは定着部へ入る前に補
正部材のコロによりフランジのある方向へ向かって寄る
ようになり、転写ベルトの片寄りや蛇行が抑制される。
また、本発明の請求項２記載の転写・定着装置は、上記
のように構成されているので、転写ベルトは定着部へ入
る前に補正部材のコロにより幅方向へ広げられるように
なり、転写ベルトの片寄りや蛇行が抑制される。Since the transfer / fixing device according to the first aspect of the present invention is configured as described above, the transfer belt passing between the photoconductor and the transfer roller is corrected before entering the fixing portion. Due to the roller of the member, the flange comes closer to a certain direction, and the deviation and meandering of the transfer belt are suppressed.
Further, since the transfer / fixing device according to the second aspect of the present invention is configured as described above, the transfer belt can be expanded in the width direction by the rollers of the correction member before entering the fixing portion. Belt deviation and meandering are suppressed.

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

【図１】本発明の実施例１に係る転写・定着装置が組み
込まれた複写機の概略構成説明図。FIG. 1 is a schematic configuration explanatory diagram of a copying machine in which a transfer / fixing device according to a first embodiment of the present invention is incorporated.

【図２】その転写・定着装置の構成説明図。FIG. 2 is a structural explanatory view of the transfer / fixing device.

【図３】本発明の実施例２に係る転写・定着装置が組み
込まれた複写機の概略構成説明図。FIG. 3 is a schematic configuration explanatory diagram of a copying machine in which a transfer / fixing device according to a second embodiment of the present invention is incorporated.

【図４】その転写・定着装置の構成説明図。FIG. 4 is a structural explanatory view of the transfer / fixing device.

【符号の説明】[Explanation of symbols]

１ 感光体 ２ 転写用ローラ ３ 加圧ローラ（定着用ローラ） ４ 熱ローラ（定着用ローラ） ５ 転写ベルト ６ フランジ ７ 補正部材 ８ 支持軸 ９ コロ １７ 補正部材 １８ 支持軸 １９ コロ 1 Photoconductor 2 Transfer Roller 3 Pressure Roller (Fixing Roller) 4 Heat Roller (Fixing Roller) 5 Transfer Belt 6 Flange 7 Correction Member 8 Support Shaft 9 Roller 17 Correction Member 18 Support Shaft 19 Roller

フロントページの続き (72)発明者 伊東 由起 大阪市中央区玉造１丁目２番28号 三田工 業株式会社内Front Page Continuation (72) Inventor Yuki Ito 1-22 Tamatsukuri, Chuo-ku, Osaka Mita Engineering Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 感光体の近傍に配された転写用ローラ
と、定着部に配された定着用ローラと、転写用ローラお
よび定着用ローラにエンドレス回転可能に掛け渡され、
転写用ローラにより感光体に圧接される中間転写体とし
ての転写ベルトとを備え、 さらに、転写用ローラおよび定着用ローラのうちの少な
くとも一方のローラの端部に設けられ、転写ベルトの幅
方向の位置を決めるフランジと、 転写ベルトの内側で各ローラ軸に対して所定の傾斜角を
保って設けられた少なくとも１つの支持軸およびこの支
持軸に回転可能に取り付けられ転写ベルトの内面に摺接
しながら転写ベルトとともに回転する複数のコロを有
し、回転中の転写ベルトを前記フランジへ向けて寄せる
少なくとも１つの補正部材とを具備してなる転写・定着
装置。1. A transfer roller disposed in the vicinity of a photoconductor, a fixing roller disposed in a fixing section, and a transfer roller and a fixing roller which are endlessly rotatably wound around the transfer roller and the fixing roller.
A transfer belt as an intermediate transfer member that is brought into pressure contact with the photosensitive member by the transfer roller, and is provided at an end portion of at least one of the transfer roller and the fixing roller. A flange that determines the position, at least one support shaft provided inside the transfer belt with a predetermined inclination angle with respect to each roller shaft, and rotatably attached to this support shaft while slidingly contacting the inner surface of the transfer belt. A transfer / fixing device having a plurality of rollers that rotate together with the transfer belt, and at least one correction member that moves the rotating transfer belt toward the flange. 【請求項２】 感光体の近傍に配された転写用ローラ
と、定着部に配された定着用ローラと、転写用ローラお
よび定着用ローラにエンドレス回転可能に掛け渡され、
転写用ローラにより感光体に圧接される中間転写体とし
ての転写ベルトとを備え、 さらに、転写ベルトの内側で転写ベルトの進行方向に向
かってハ字状にかつ転写ベルトの幅中心線に対して線対
称位置に設けられた少なくとも一組の支持軸およびこれ
らの支持軸に回転可能に取り付けられ転写ベルトの内面
に摺接しながら転写ベルトとともに回転する複数のコロ
を有し、回転中の転写ベルトを幅方向へ広げる少なくと
も一組の補正部材を具備してなる転写・定着装置。2. A transfer roller arranged near the photoconductor, a fixing roller arranged in a fixing portion, and a transfer roller and a fixing roller which are endlessly rotatably wound around the transfer roller and the fixing roller.
A transfer belt as an intermediate transfer member that is pressed against the photoconductor by a transfer roller, and is formed in a V shape inside the transfer belt in the traveling direction of the transfer belt and with respect to the width center line of the transfer belt. At least one set of support shafts provided in line-symmetrical positions and a plurality of rollers that are rotatably attached to these support shafts and that rotate with the transfer belt while slidingly contacting the inner surface of the transfer belt A transfer / fixing device including at least one set of correction members that expand in the width direction.
JP4182085A 1992-07-09 1992-07-09 Transferring and fixing device Pending JPH0627835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4182085A JPH0627835A (en) 1992-07-09 1992-07-09 Transferring and fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4182085A JPH0627835A (en) 1992-07-09 1992-07-09 Transferring and fixing device

Publications (1)

Publication Number Publication Date
JPH0627835A true JPH0627835A (en) 1994-02-04

Family

ID=16112103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4182085A Pending JPH0627835A (en) 1992-07-09 1992-07-09 Transferring and fixing device

Country Status (1)

Country Link
JP (1) JPH0627835A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6970674B2 (en) 2002-03-15 2005-11-29 Fuji Xerox Co., Ltd. Belt transporting device and image forming apparatus using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6970674B2 (en) 2002-03-15 2005-11-29 Fuji Xerox Co., Ltd. Belt transporting device and image forming apparatus using the same

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