JPH07287453A - Bias applying and grounding mechanism for transfer belt - Google Patents
Bias applying and grounding mechanism for transfer beltInfo
- Publication number
- JPH07287453A JPH07287453A JP6080220A JP8022094A JPH07287453A JP H07287453 A JPH07287453 A JP H07287453A JP 6080220 A JP6080220 A JP 6080220A JP 8022094 A JP8022094 A JP 8022094A JP H07287453 A JPH07287453 A JP H07287453A
- Authority
- JP
- Japan
- Prior art keywords
- transfer belt
- bias applying
- roller
- bias
- electrode member
- 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.)
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- Electrophotography Configuration And Component (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、複写機、ファクシミ
リ、プリンター等の転写ベルトのイアス印加及びアース
機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bias applying and earthing mechanism for a transfer belt of copying machines, facsimiles, printers and the like.
【０００２】[0002]
【従来の技術】従来、複写機、ファクシミリ、プリンタ
ー等の転写ベルト装置として、例えば図８に示すよう
に、転写ベルト１を張架するための少なくとも２本のロ
ーラ（駆動ローラ２及び従動ローラ３など）を支持す
る、転写ベルト１のバイアス印加手段（バイアスローラ
４）及びアース手段（アース板５）を備えたフレーム６
と、このフレーム６を揺動自在且つ取外し可能に支持す
る、電源７を備えたケーシング８とを有する転写ベルト
装置が知られている。2. Description of the Related Art Conventionally, as a transfer belt device for a copying machine, a facsimile, a printer or the like, as shown in FIG. 8, for example, at least two rollers (a driving roller 2 and a driven roller 3) for stretching a transfer belt 1 are stretched. A frame 6 provided with a bias applying unit (bias roller 4) and a grounding unit (grounding plate 5) for the transfer belt 1,
There is known a transfer belt device having a casing 8 equipped with a power source 7, which supports the frame 6 swingably and detachably.
【０００３】この種の転写ベルト装置では、周知のよう
に、所定のサイクルで転写ベルト１の清掃や交換を行う
必要がある。この転写ベルト１の交換作業は、先ず、図
８（ａ）に示すように、 転写搬送ベルトユニット１０を外す。 ベルトユニット１０のツマミ１１を持ち、転写バイア
ス端子１２とアース板端子１３のコネクタ１４，１５を
抜く。 ベルトユニット１０を９０°に立て、上へ抜く。次い
で、図８（ｂ）に示すように、 駆動ローラ２の前後２本の固定ねじ１６，１７を外
す。そして、図８（ｃ）に示すように、 ベルトユニット１０の上側が内になるように、駆動ロ
ーラ２の軸を曲げ「く」 の字にする。 転写バイアス端子１２を避けながら転写ベルト１を抜
く。 逆の手順で組付ける。In the transfer belt device of this type, as is well known, it is necessary to clean or replace the transfer belt 1 in a predetermined cycle. To replace the transfer belt 1, first, as shown in FIG. 8A, the transfer / transport belt unit 10 is removed. Hold the knob 11 of the belt unit 10 and remove the transfer bias terminal 12 and the connectors 14 and 15 of the ground plate terminal 13. Stand the belt unit 10 at 90 ° and pull it up. Next, as shown in FIG. 8 (b), the front and rear two fixing screws 16 and 17 of the drive roller 2 are removed. Then, as shown in FIG. 8C, the shaft of the drive roller 2 is bent so that the upper side of the belt unit 10 is inward. The transfer belt 1 is pulled out while avoiding the transfer bias terminal 12. Assemble in the reverse order.
【０００４】[0004]
【発明が解決しようとする課題】ところで、前記従来の
転写ベルト装置における転写ベルトバイアス印加及びア
ース機構では、ケーシング８に備えられた電源７と、フ
レーム６に備えられたバイアスローラ４またはアース板
５とが、それぞれの導通を得るために、図８（ａ）に示
すように、ハーネス１８を使用し、コネクタ１４，１５
やねじ止め等の接続方式により接続されていた。By the way, in the transfer belt bias applying and grounding mechanism in the conventional transfer belt device, the power source 7 provided in the casing 8 and the bias roller 4 or the earth plate 5 provided in the frame 6 are provided. In order to obtain the respective conductions, the harness 18 is used as shown in FIG.
It was connected by a connection method such as or screwing.
【０００５】そのため、前記従来の転写ベルト装置にお
ける転写ベルトバイアス印加及びアース機構では、ケー
シング８からフレーム６を取り外す度に、コネクタ１
４，１５（または止めねじ）を抜いてハーネス１８を取
り外さなければならず、また、セット時には、逆にハー
ネス１８をその都度接続しなければならないため、その
転写ベルト１の交換時における作業性が悪く、電源７と
バイアスローラ４またはアース板５との接続し忘れや接
続ミスが生じ易くなる不具合があった。Therefore, in the transfer belt bias applying and earthing mechanism in the conventional transfer belt device, the connector 1 is removed every time the frame 6 is removed from the casing 8.
Since the harness 18 must be removed by pulling out 4, 15 (or the set screw), and the harness 18 must be connected each time when setting, the workability when exchanging the transfer belt 1 is improved. Poorly, there is a problem that the connection between the power supply 7 and the bias roller 4 or the ground plate 5 is apt to be forgotten or a connection error is likely to occur.
【０００６】また、前記従来の転写ベルト装置における
転写ベルトバイアス印加及びアース機構では、図８
（ａ）に示すように、コネクタ１４，１５を接続するた
めの転写バイアス端子１２及びアース板端子１３が、フ
レーム６から転写ベルト１の着脱経路側に突出した構造
となってしまうため、転写ベルト１の交換及び組付け時
の作業性が低下する不具合があった。Further, in the transfer belt bias applying and grounding mechanism in the conventional transfer belt device, as shown in FIG.
As shown in (a), the transfer bias terminal 12 and the ground plate terminal 13 for connecting the connectors 14 and 15 have a structure protruding from the frame 6 toward the attachment / detachment path side of the transfer belt 1. There was a problem that workability at the time of replacement and assembly of No. 1 was lowered.
【０００７】本発明は、上述の点に鑑みてなされたもの
であって、その目的は、電源との導通部の接続し忘れや
接続ミスの発生を防止でき、転写ベルトの交換及び組付
け時の作業性を向上できる転写ベルトバイアス印加及び
アース機構を提供することにある。The present invention has been made in view of the above-mentioned points, and an object thereof is to prevent the forgetting of connection of a conducting portion with a power source or the occurrence of connection error, and to replace or assemble the transfer belt. To provide a transfer belt bias applying and grounding mechanism capable of improving the workability of.
【０００８】[0008]
【課題を解決するための手段】本発明は、上述の課題を
解決するために、請求項１では、転写ベルトを張架する
ための少なくとも２本のローラを支持する、該転写ベル
トのバイアス印加手段及びアース手段を備えたフレーム
と、該フレームを揺動自在且つ取外し可能に支持する、
電源を備えたケーシングとを有する転写ベルト装置にお
いて、上記フレームを上記ケーシングにセットした際に
上記バイアス手段またはアース手段の少なくとも一方と
接触する電極部材を、上記電源と導通させて上記ケーシ
ングに配設した構成とする。In order to solve the above-mentioned problems, the present invention provides, in claim 1, a bias application to at least two rollers for stretching a transfer belt, the bias application of the transfer belt. A frame having means and a grounding means, and supporting the frame swingably and detachably,
In a transfer belt device having a casing provided with a power source, an electrode member which comes into contact with at least one of the bias means or the grounding means when the frame is set in the casing is arranged in the casing in conduction with the power source. It will be configured.
【０００９】また、請求項２では、転写ベルトのバイア
ス印加手段またはアース手段に導電性ローラを用いてい
る請求項１記載の転写ベルトバイアス印加及びアース機
構において、該導電性ローラの支持部材に導電性部材を
用いるとともに、該電極部材が、上記導電性ローラと該
導電性ローラの支持部材との双方に対して接触する単体
の双股形状に形成されている構成とする。According to a second aspect of the present invention, in the transfer belt bias applying and earthing mechanism according to the first aspect, a conductive roller is used as the bias applying means or the earthing means of the transfer belt. A conductive member is used, and the electrode member is formed in a single bifurcated shape that contacts both the conductive roller and the supporting member of the conductive roller.
【００１０】また、請求項３では、請求項１記載の転写
ベルトバイアス印加及びアース機構において、上記電極
部材が、上記電源の出力部または入力部に対し直接接触
して導通する、ハーネスとしての機能をも兼ね備えた形
状に形成されている構成とする。According to a third aspect of the present invention, in the transfer belt bias applying and grounding mechanism according to the first aspect, the electrode member is brought into direct contact with an output portion or an input portion of the power source to conduct electricity, thereby functioning as a harness. The configuration is such that it also has
【００１１】[0011]
【実施例】図１及び図２に、本発明が実施される転写ベ
ルト装置及びベルトユニットの基本的構成を示す。この
転写ベルト装置及びベルトユニットは、図１及び図２に
示すように、転写ベルト１、駆動ローラ２、従動ローラ
３、バイアスローラ４、アース板５、フレーム６、電源
７、及び、ケーシング８などで構成されている。1 and 2 show the basic constructions of a transfer belt device and a belt unit in which the present invention is carried out. As shown in FIGS. 1 and 2, the transfer belt device and the belt unit include a transfer belt 1, a driving roller 2, a driven roller 3, a bias roller 4, a ground plate 5, a frame 6, a power supply 7, and a casing 8. It is composed of.
【００１２】図１及び図２において、転写ベルト１は、
駆動ローラ１及び従動ローラ３の少なくとも２本のロー
ラによって回転自在に張架されている。駆動ローラ２及
び従動ローラ３は、フレーム６にそれぞれ回転自在に支
持されている。バイアスローラ４は、導電性ローラから
なり、転写ベルト１の内周面に接触するように、軸受９
を介してフレーム６に回転自在に支持されている。アー
ス板５は、導電性部材からなり、転写ベルト１の内周面
に接触するように、フレーム６に支持されている。フレ
ーム６は、ケーシング８に対して揺動自在且つ取外し可
能に支持されている。電源７は、回路基板で構成されて
おり、ケーシング８に配設されている。In FIGS. 1 and 2, the transfer belt 1 is
The driving roller 1 and the driven roller 3 are rotatably stretched around at least two rollers. The drive roller 2 and the driven roller 3 are rotatably supported by the frame 6, respectively. The bias roller 4 is made of a conductive roller and has a bearing 9 so that the bias roller 4 contacts the inner peripheral surface of the transfer belt 1.
It is rotatably supported by the frame 6 via. The ground plate 5 is made of a conductive member and is supported by the frame 6 so as to come into contact with the inner peripheral surface of the transfer belt 1. The frame 6 is swingably and detachably supported by the casing 8. The power supply 7 is composed of a circuit board and is arranged in the casing 8.
【００１３】図３に、本発明による請求項１記載の転写
ベルトバイアス印加機構の実施例を示す。本実施例で
は、フレーム６をケーシング８にセットした際に、バイ
アス手段としてのバイアスローラ４と接触する電極部材
２０が、ハーネス１８を介して電源７と導通されて、ケ
ーシング８に配設されている。従って、このバイアス印
加機構によれば、バイアスローラ４と電源７との導通
が、従来例のような転写バイアス端子１２とコネクタ１
４との接続によらず、フレーム６をケーシング８にセッ
トした際の電極部材２０とバイアスローラ４との接触に
より得られるので、転写ベルト１の清掃及び交換時に、
ハーネス１８を取り外す必要がない。また、このバイア
ス印加機構によれば、従来例のようなコネクタ１４を接
続するための転写バイアス端子１２が不要となるので、
転写ベルト１の交換時の障碍となる突出部が解消され
る。なお、本実施例では、ハーネス１８と電極部材２０
との接続をねじ止めにより行っているが、このハーネス
１８と電極部材２０とは、半田付けや差込み等により接
続してもよい。FIG. 3 shows an embodiment of the transfer belt bias applying mechanism according to the first aspect of the present invention. In the present embodiment, when the frame 6 is set in the casing 8, the electrode member 20 that comes into contact with the bias roller 4 as the bias means is electrically connected to the power source 7 via the harness 18 and disposed in the casing 8. There is. Therefore, according to this bias applying mechanism, the conduction between the bias roller 4 and the power source 7 is maintained by the transfer bias terminal 12 and the connector 1 as in the conventional example.
4 is obtained by contact between the electrode member 20 and the bias roller 4 when the frame 6 is set in the casing 8 regardless of the connection with the transfer roller 4.
There is no need to remove the harness 18. Further, according to this bias applying mechanism, since the transfer bias terminal 12 for connecting the connector 14 as in the conventional example is not required,
The protruding portion that becomes an obstacle when the transfer belt 1 is replaced is eliminated. In this embodiment, the harness 18 and the electrode member 20 are used.
The harness 18 and the electrode member 20 may be connected to each other by soldering, inserting or the like.
【００１４】図４に、本発明による請求項１記載のアー
ス機構の実施例を示す。本実施例では、フレーム６をケ
ーシング８にセットした際に、アース手段としてのアー
ス板５と接触する電極部材２０が、ハーネス１８を介し
て電源７と導通されて、ケーシング８に配設されてい
る。従って、このアース機構によれば、アース板５と電
源７との導通が、従来例のようなアース板端子１３とコ
ネクタ１５との接続によらず、フレーム６をケーシング
８にセットした際の電極部材２０とアース板５との接触
により得られるので、転写ベルト１の清掃及び交換時
に、ハーネス１８を取り外す必要がない。また、このア
ース機構によれば、従来例のようなコネクタ１５を接続
するための転写バイアス端子１３が不要となるので、転
写ベルト１の交換時の障碍となる突出部が解消される。
なお、本実施例では、ハーネス１８と電極部材２０との
接続をねじ止めにより行っているが、このハーネス１８
と電極部材２０とは、半田付けや差込み等により接続し
てもよい。FIG. 4 shows an embodiment of the earthing mechanism according to the first aspect of the present invention. In this embodiment, when the frame 6 is set in the casing 8, the electrode member 20 that comes into contact with the earth plate 5 as the earthing means is electrically connected to the power source 7 via the harness 18 and disposed in the casing 8. There is. Therefore, according to this grounding mechanism, the continuity between the grounding plate 5 and the power source 7 does not depend on the connection between the grounding plate terminal 13 and the connector 15 as in the conventional example, but the electrode when the frame 6 is set in the casing 8. Since it is obtained by the contact between the member 20 and the ground plate 5, it is not necessary to remove the harness 18 when cleaning and replacing the transfer belt 1. Further, according to this grounding mechanism, the transfer bias terminal 13 for connecting the connector 15 as in the conventional example is unnecessary, so that the protruding portion which becomes an obstacle when the transfer belt 1 is replaced is eliminated.
In this embodiment, the harness 18 and the electrode member 20 are connected by screwing.
The electrode member 20 may be connected to the electrode member 20 by soldering, inserting, or the like.
【００１５】図５に、本発明による請求項１記載のアー
ス機構の他の実施例を示す。本実施例では、フレーム６
をケーシング８にセットした際に、アース手段としての
従動ローラ（導電性ローラ）３，導電性軸受２１，及び
導電性端子２２と接触する電極部材２０が、ハーネス１
８を介して電源７と導通されて、ケーシング８に配設さ
れている。従って、このアース機構によれば、アース手
段としての従動ローラ（導電性ローラ）３と電源７との
導通が、従来例のようなアース板端子１３とコネクタ１
５との接続によらず、フレーム６をケーシング８にセッ
トした際の電極部材２０と導電性端子２２との接触によ
り、導電性軸受２１を介して得られるので、転写ベルト
１の清掃及び交換時に、ハーネス１８を取り外す必要が
ない。また、このアース機構によれば、従来例のような
コネクタ１５を接続するための転写バイアス端子１３が
不要となるので、転写ベルト１の交換時の障碍となる突
出部が解消される。なお、本実施例では、ハーネス１８
と電極部材２０との接続をねじ止めにより行っている
が、このハーネス１８と電極部材２０とは、半田付けや
差込み等により接続してもよい。FIG. 5 shows another embodiment of the earthing mechanism according to claim 1 of the present invention. In this embodiment, the frame 6
The electrode member 20 that comes into contact with the driven roller (conductive roller) 3, the conductive bearing 21, and the conductive terminal 22 as the grounding means when the electrode is set in the casing 8 is the harness 1
It is electrically connected to the power source 7 via 8 and is disposed in the casing 8. Therefore, according to this grounding mechanism, the driven roller (conductive roller) 3 as grounding means and the power source 7 are electrically connected to each other by the grounding plate terminal 13 and the connector 1 as in the conventional example.
5, the contact between the electrode member 20 and the conductive terminal 22 when the frame 6 is set in the casing 8 is obtained via the conductive bearing 21, so that the transfer belt 1 can be cleaned and replaced. It is not necessary to remove the harness 18. Further, according to this grounding mechanism, the transfer bias terminal 13 for connecting the connector 15 as in the conventional example is unnecessary, so that the protruding portion which becomes an obstacle when the transfer belt 1 is replaced is eliminated. In the present embodiment, the harness 18
The electrode 18 and the electrode member 20 are connected by screwing, but the harness 18 and the electrode member 20 may be connected by soldering, inserting, or the like.
【００１６】図６に、本発明による請求項２記載の転写
ベルトバイアス印加機構の実施例を示す。本実施例で
は、導電性ローラからなるバイアスローラ４の支持部材
に、導電性部材からなる導電性軸受２３を用いるととも
に、電極部材２０としては、導電性ローラ（バイアスロ
ーラ４）と、この導電性ローラの支持部材（導電性軸受
２３）との双方に対して接触する単体の双股形状に形成
されている電極部材が使用されている。従って、このバ
イアス印加機構によれば、転写ベルト１の清掃及び交換
時に、ハーネス１８を取り外す必要がなく、また、転写
ベルト１の交換時の障碍となる突出部が解消されるとと
もに、導電性ローラ（バイアスローラ４）と、この導電
性ローラの支持部材（導電性軸受２３）との双方に対し
て、電極部材２０が単体形状により接触できるので、こ
の電極部材２０とバイアスローラ４との導通が、部品点
数を増やすことなく、より確実になる。なお、ここでは
バイアス印加機構について説明したが、本実施例は、図
６におけるバイアスローラ４を、図５に示したような導
電性の従動ローラ（アースローラ）３と置き換えること
により、アース機構として構成することができる。ま
た、本実施例では、ハーネス１８と電極部材２０との接
続をねじ止めにより行っているが、このハーネス１８と
電極部材２０とは、半田付けや差込み等により接続して
もよい。FIG. 6 shows an embodiment of the transfer belt bias applying mechanism according to the second aspect of the present invention. In this embodiment, a conductive bearing 23 made of a conductive member is used as a support member of the bias roller 4 made of a conductive roller, and the electrode member 20 is made of a conductive roller (bias roller 4). A single bifurcated electrode member that contacts both the roller support member (conductive bearing 23) is used. Therefore, according to this bias applying mechanism, it is not necessary to remove the harness 18 at the time of cleaning and replacing the transfer belt 1, and the protruding portion that obstructs the replacement of the transfer belt 1 can be eliminated and the conductive roller can be removed. Since the electrode member 20 can be in contact with both the (bias roller 4) and the support member (conductive bearing 23) of the conductive roller by a single shape, the electrode member 20 and the bias roller 4 are electrically connected. , Becomes more reliable without increasing the number of parts. Although the bias applying mechanism has been described here, in the present embodiment, the bias roller 4 in FIG. 6 is replaced with a conductive driven roller (earth roller) 3 as shown in FIG. Can be configured. Further, in the present embodiment, the harness 18 and the electrode member 20 are connected by screwing, but the harness 18 and the electrode member 20 may be connected by soldering, inserting or the like.
【００１７】図７に、本発明による請求項３記載の転写
ベルトバイアス印加及びアース機構の実施例を示す。本
実施例では、電極部材２０が、電源７の出力部または入
力部（フィードバックアース）７ａに対し、直接接触し
て導通する、ハーネスとしての機能をも兼ね備えた形状
に形成されている。従って、この転写ベルトバイアス印
加及びアース機構によれば、電極部材２０と電源７の出
力部または入力部（フィードバックアース）７ａとが、
直接接触できるので、電源７と電極部材２０との間の接
続に、ハーネス１８などの別部品を付加する必要がな
く、また、転写ベルト１の交換時の障碍となる突出部が
解消されるとともに、電極部材２０と電源７との導通が
より確実になる。なお、本実施例における電極部材２０
と電源７の出力部または入力部（フィードバックアー
ス）７ａとの接続方法は、図７に示すような接触による
接続の他、例えば半田付けや差込みによる接続であって
もよい。また、本実施例における電極部材２０のケーシ
ング８への配設方法としては、図７に示すように、ケー
シング８に形成した係止爪８ａを用いて電極部材２０の
腹部を係止してもよく、あるいは、電極部材２０の腹部
をねじ止めしてもよい。FIG. 7 shows an embodiment of the transfer belt bias applying and earthing mechanism according to the third aspect of the present invention. In the present embodiment, the electrode member 20 is formed in a shape that also has a function as a harness, which is in direct contact with the output portion or the input portion (feedback ground) 7a of the power source 7 to conduct electricity. Therefore, according to this transfer belt bias applying and earthing mechanism, the electrode member 20 and the output portion or input portion (feedback earth) 7a of the power source 7 are
Since direct contact can be made, it is not necessary to add a separate component such as the harness 18 to the connection between the power source 7 and the electrode member 20, and the protruding portion that obstructs the replacement of the transfer belt 1 is eliminated. Therefore, the conduction between the electrode member 20 and the power supply 7 becomes more reliable. In addition, the electrode member 20 in the present embodiment
The connection method between the output section and the input section (feedback ground) 7a of the power supply 7 may be connection by contact as shown in FIG. 7 or connection by soldering or insertion. In addition, as a method of disposing the electrode member 20 in the casing 8 in the present embodiment, as shown in FIG. 7, even if the abdomen of the electrode member 20 is locked by using the locking claw 8a formed in the casing 8. Alternatively, the abdomen of the electrode member 20 may be screwed.
【００１８】[0018]
【発明の効果】以上説明したように、本発明によれば、
請求項１では、転写ベルトの清掃及び交換時に、ハーネ
スを取り外す必要がなく、ハーネスの接続し忘れや接続
ミスの発生を防止することができる。また、従来例のよ
うなコネクタを接続するための転写バイアス端子及びア
ース板端子が不要となり、転写ベルトの交換時の障碍と
なる突出部を解消できるので、転写ベルトの清掃及び交
換時の作業性が向上される。As described above, according to the present invention,
According to the first aspect of the present invention, it is not necessary to remove the harness when cleaning and replacing the transfer belt, and it is possible to prevent the harness from being forgotten to be connected or the connection error to occur. Further, the transfer bias terminal and the ground plate terminal for connecting the connector as in the conventional example are not required, and the protruding portion that obstructs the replacement of the transfer belt can be eliminated, so that the transfer belt can be cleaned and replaced easily. Is improved.
【００１９】また、請求項２では、転写ベルトの清掃及
び交換時に、ハーネスを取り外す必要がなく、また、転
写ベルトの交換時の障碍となる突出部が解消されるとと
もに、導電性ローラと、この導電性ローラの支持部材と
の双方に対して、電極部材が単体形状により接触できる
ので、この電極部材と導電性ローラとの導通が、部品点
数を増やすことなくより確実になり、導通不良による画
質低下の問題の低減が図れる。According to the second aspect of the present invention, it is not necessary to remove the harness at the time of cleaning and replacing the transfer belt, and the protruding portion which obstructs the replacement of the transfer belt is eliminated. Since the electrode member can be in contact with both the supporting member of the conductive roller and the supporting member of the conductive roller by itself, the conduction between the electrode member and the conductive roller becomes more reliable without increasing the number of parts, and the image quality due to poor conduction can be improved. The reduction problem can be reduced.
【００２０】また、請求項３では、電極部材と電源の出
力部または入力部（フィードバックアース）とが、直接
接触でき、電源と電極部材との間の接続にハーネスなど
の別部品を付加する必要がなくなるので、電極部材の組
付け性が向上され、また、電極部材の組付けミスの発生
が低減されるとともに、電極部材と電源との導通がより
確実になる。Further, in the third aspect, the electrode member and the output portion or the input portion (feedback ground) of the power source can directly contact with each other, and it is necessary to add another component such as a harness to the connection between the power source and the electrode member. As a result, the assemblability of the electrode member is improved, the occurrence of assembly mistakes of the electrode member is reduced, and the electrical connection between the electrode member and the power source becomes more reliable.
【図１】本発明が実施される転写ベルト装置の基本的構
成を示す概略側面図である。FIG. 1 is a schematic side view showing a basic configuration of a transfer belt device in which the present invention is implemented.
【図２】本発明が実施される転写ベルト装置におけるベ
ルトユニットの基本的構成を示す概略斜視図である。FIG. 2 is a schematic perspective view showing a basic configuration of a belt unit in a transfer belt device in which the present invention is implemented.
【図３】本発明による請求項１記載の転写ベルトバイア
ス印加機構の実施例を示す要部断面図である。FIG. 3 is a cross-sectional view of essential parts showing an embodiment of the transfer belt bias applying mechanism according to claim 1 of the present invention.
【図４】本発明による請求項１記載のアース機構の実施
例を示す要部断面図である。FIG. 4 is a cross-sectional view of essential parts showing an embodiment of the earthing mechanism according to claim 1 of the present invention.
【図５】本発明による請求項１記載のアース機構の他の
実施例を示す要部断面図である。FIG. 5 is a cross-sectional view of essential parts showing another embodiment of the grounding mechanism according to the present invention according to claim 1;
【図６】本発明による請求項２記載の転写ベルトバイア
ス印加機構の実施例を示す要部斜視図である。FIG. 6 is a perspective view of an essential part showing an embodiment of the transfer belt bias applying mechanism according to claim 2 of the present invention.
【図７】本発明による請求項３記載の転写ベルトバイア
ス印加及びアース機構の実施例を示す要部斜視図であ
る。FIG. 7 is a perspective view of an essential part showing an embodiment of the transfer belt bias applying and earthing mechanism according to claim 3 of the present invention.
【図８】従来の転写ベルト装置における転写ベルトの交
換作業の手順を示す斜視図である。FIG. 8 is a perspective view showing a procedure of a transfer belt replacement operation in a conventional transfer belt device.
１ 転写ベルト ２ 駆動ローラ ３ 従動ローラ ４ バイアスローラ（バイアス印加手段） ５ アース板（アース手段） ６ フレーム ７ 電源 ７ａ 電源の出力部または入力部（フィードバック
アース） ８ ケーシング ８ａ 係止爪 ９ 軸受 １０ ベルトユニット １８ ハーネス ２０ 電極部材 ２１，２３ 導電性軸受 ２２ 導電性端子1 Transfer Belt 2 Drive Roller 3 Followed Roller 4 Bias Roller (Bias Applying Means) 5 Earth Plate (Earthing Means) 6 Frame 7 Power Supply 7a Power Supply Output or Input (Feedback Ground) 8 Casing 8a Locking Claw 9 Bearing 10 Belt Unit 18 Harness 20 Electrode member 21,23 Conductive bearing 22 Conductive terminal
Claims (3)
本のローラを支持する、該転写ベルトのバイアス印加手
段及びアース手段を備えたフレームと、該フレームを揺
動自在且つ取外し可能に支持する、電源を備えたケーシ
ングとを有する転写ベルト装置において、上記フレーム
を上記ケーシングにセットした際に上記バイアス手段ま
たはアース手段の少なくとも一方と接触する電極部材
を、上記電源と導通させて上記ケーシングに配設したこ
とを特徴とする転写ベルトバイアス印加及びアース機
構。1. At least two members for tensioning a transfer belt.
A transfer belt device comprising: a frame that supports a book roller and that includes a bias applying unit and a ground unit for the transfer belt; and a casing that includes a power source that swingably and detachably supports the frame. A transfer belt bias applying and grounding mechanism, characterized in that an electrode member, which comes into contact with at least one of the bias means and the grounding means when the frame is set in the casing, is arranged in the casing while being electrically connected to the power source.
ス手段に導電性ローラを用いている請求項１記載の転写
ベルトバイアス印加及びアース機構において、該導電性
ローラの支持部材に導電性部材を用いるとともに、該電
極部材が、上記導電性ローラと該導電性ローラの支持部
材との双方に対して接触する単体の双股形状に形成され
ていることを特徴とする転写ベルトバイアス印加及びア
ース機構。2. The transfer belt bias applying and grounding mechanism according to claim 1, wherein a conductive roller is used as a bias applying means or a grounding means of the transfer belt, and a conductive member is used as a supporting member of the conductive roller. The transfer belt bias applying and grounding mechanism, wherein the electrode member is formed in a single bifurcated shape that is in contact with both the conductive roller and the supporting member of the conductive roller.
びアース機構において、上記電極部材が、上記電源の出
力部または入力部に対し直接接触して導通する、ハーネ
スとしての機能をも兼ね備えた形状に形成されているこ
とを特徴とする転写ベルトバイアス印加及びアース機
構。3. The transfer belt bias applying and earthing mechanism according to claim 1, wherein the electrode member is in direct contact with an output portion or an input portion of the power source to conduct electricity, and also has a function as a harness. A transfer belt bias applying and grounding mechanism characterized by being formed on the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08022094A JP3423405B2 (en) | 1994-04-19 | 1994-04-19 | Transfer belt bias application and grounding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08022094A JP3423405B2 (en) | 1994-04-19 | 1994-04-19 | Transfer belt bias application and grounding mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07287453A true JPH07287453A (en) | 1995-10-31 |
| JP3423405B2 JP3423405B2 (en) | 2003-07-07 |
Family
ID=13712297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08022094A Expired - Lifetime JP3423405B2 (en) | 1994-04-19 | 1994-04-19 | Transfer belt bias application and grounding mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3423405B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008250355A (en) * | 2008-07-14 | 2008-10-16 | Ricoh Co Ltd | Image forming apparatus having transfer device |
| JP2016009125A (en) * | 2014-06-25 | 2016-01-18 | 株式会社リコー | Image forming apparatus of electrophotographic system |
| US11347166B2 (en) | 2020-07-31 | 2022-05-31 | Brother Kogyo Kabushiki Kaisha | Belt unit including first frame provided with bearing holder positioned closer to second frame, and image-forming apparatus provided with the belt unit |
-
1994
- 1994-04-19 JP JP08022094A patent/JP3423405B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008250355A (en) * | 2008-07-14 | 2008-10-16 | Ricoh Co Ltd | Image forming apparatus having transfer device |
| JP4635078B2 (en) * | 2008-07-14 | 2011-02-16 | 株式会社リコー | Image forming apparatus |
| JP2016009125A (en) * | 2014-06-25 | 2016-01-18 | 株式会社リコー | Image forming apparatus of electrophotographic system |
| US11347166B2 (en) | 2020-07-31 | 2022-05-31 | Brother Kogyo Kabushiki Kaisha | Belt unit including first frame provided with bearing holder positioned closer to second frame, and image-forming apparatus provided with the belt unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3423405B2 (en) | 2003-07-07 |
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