JPH0125961Y2 - - Google Patents

Info

Publication number
JPH0125961Y2
JPH0125961Y2 JP4601082U JP4601082U JPH0125961Y2 JP H0125961 Y2 JPH0125961 Y2 JP H0125961Y2 JP 4601082 U JP4601082 U JP 4601082U JP 4601082 U JP4601082 U JP 4601082U JP H0125961 Y2 JPH0125961 Y2 JP H0125961Y2
Authority
JP
Japan
Prior art keywords
transfer member
transfer
guide
guide plate
image carrier
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.)
Expired
Application number
JP4601082U
Other languages
Japanese (ja)
Other versions
JPS58149748U (en
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 filed Critical
Priority to JP4601082U priority Critical patent/JPS58149748U/en
Publication of JPS58149748U publication Critical patent/JPS58149748U/en
Application granted granted Critical
Publication of JPH0125961Y2 publication Critical patent/JPH0125961Y2/ja
Granted legal-status Critical Current

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Description

【考案の詳細な説明】 本考案は、複写機の転写ガイドに関するもので
ある。一般に、複写機においては、トナー像を持
つたドラムに転写部材を密着させそこに転写コロ
トロンを用いてトナー像を転写部材上に転写して
いるが、この転写際、ドラムと転写部材との密着
性をよくすることによつて、より高い転写効率が
得られる。したがつて従来では、第1図に示すよ
うに転写部材Bのドラム表面Aに向かう角度を垂
直に近づける様に、すなわちθの角度をできるだ
け小さくする様に転写ガイドを設け、これに転写
部材Bが沿うように送り出すことにより文字のぼ
けない鮮明なコピーが得られるように構成してい
る。しかし上記角度θを小さくする事により、よ
り高い転写効率が得られるがその反面、次の様な
不都合を生じていた。
[Detailed Description of the Invention] The present invention relates to a transfer guide for a copying machine. Generally, in a copying machine, a transfer member is brought into close contact with a drum carrying a toner image, and a transfer corotron is used to transfer the toner image onto the transfer member. By improving the properties, higher transfer efficiency can be obtained. Therefore, conventionally, as shown in FIG. 1, a transfer guide is provided so that the angle of the transfer member B toward the drum surface A approaches the vertical direction, that is, the angle θ is made as small as possible. By sending the copy along the same line, a clear copy with no blurring of characters can be obtained. However, although higher transfer efficiency can be obtained by reducing the angle θ, the following disadvantages occur.

即ち第1図に示すように角度θを小さくしてゆ
くと、転写部材Bの先端とドラム表面Aとが接触
する際の衝撃が大きく、更には転写部材Bの先端
部がドラム表面Aに対して滑りを生じるために、
ドラム表面Aに形成した未転写トナー像を乱した
り、あるいは転写部材Bへの転写位置がずれると
いつた不具合が生じる。
In other words, as the angle θ is decreased as shown in FIG. To cause slippage,
If the untransferred toner image formed on the drum surface A is disturbed, or if the transfer position to the transfer member B is shifted, problems such as irritation occur.

第2図に示すように一般に、転写部材の進行方
向の速度ベクトルをaとしドラムの周速度をbと
すると、 |a|=|b|がなりたつ またドラム周速度の転写部材進行方向成分を
b′とすると |b′|=|b|sinθとなり したがつて転写部材がドラム表面に接触する際
には、 (1−sinθ)|α|の速度差による衝撃が加わ
る事になる。したがつて本考案は上記転写部材の
先端がドラムに接触する際には上記角度θをなる
べく大きくとりその衝撃を小さくして、転写部材
への転写ずれを防止するとともに、ドラムと転写
部材との密着性を向上すべく上記の角度θを大き
くして転写品質の良い転写を行なえる転写ガイド
を提供する事を目的とするものである。
As shown in Fig. 2, in general, if the speed vector in the direction of movement of the transfer member is a and the peripheral speed of the drum is b, then |a|=|b|
If b', then |b'|=|b|sinθ.Therefore, when the transfer member contacts the drum surface, an impact is applied due to the speed difference of (1-sinθ)|α|. Therefore, in the present invention, when the tip of the transfer member contacts the drum, the angle θ is made as large as possible to reduce the impact, thereby preventing misalignment of the transfer onto the transfer member, and improving the relationship between the drum and the transfer member. It is an object of the present invention to provide a transfer guide that can perform transfer with good quality by increasing the angle θ to improve adhesion.

以下に本考案を第3図及び第4図に示す実施例
に基いて詳細に説明する。
The present invention will be explained in detail below based on the embodiment shown in FIGS. 3 and 4.

1はトナー像支持体として使用されるドラムで
あり、2は転写部材4を順次送出する上側送出ロ
ーラ、3はその上側送出ローラ2と圧接される下
側送出ローラである。5a及び5bは一対の送出
ローラ2,3とドラム1との間に設けられた上下
の転写部材ガイド板であり、6a及び6bは、例
えばカセツト(図示せず)と一対の送出ローラ
2,3との間に配置した上下の転写部材ガイド板
である。前記下側の転写部材ガイド板5bは支軸
7を支点として回動自在に支持されているが、こ
の転写部材ガイド板5bは常時はばね8の引張り
力により、この転写部材ガイド板5bは反時計方
向に付勢されて、該ガイド板5bの先端はストツ
パー10aに当接されている。この転写部材ガイ
ド板5bには、ばね8の引張り力に抗して該転写
部材ガイド板5bを引き下げて、ガイド板5bを
時計方向に動作するためのプランジヤ9が設けら
れている。10bは転写部材ガイド板5bの後端
が当接されるストツパー11は転写コロトロン、
12は転写部材4により押動されたとき、前記プ
ランジヤ9を起動させるマイクロスイツチであ
る。
1 is a drum used as a toner image support; 2 is an upper delivery roller that sequentially delivers the transfer member 4; and 3 is a lower delivery roller that is in pressure contact with the upper delivery roller 2. 5a and 5b are upper and lower transfer member guide plates provided between the pair of delivery rollers 2, 3 and the drum 1, and 6a and 6b are, for example, a cassette (not shown) and the pair of delivery rollers 2, 3. The upper and lower transfer member guide plates are arranged between the upper and lower transfer member guide plates. The lower transfer member guide plate 5b is rotatably supported around the support shaft 7, but the transfer member guide plate 5b is normally rotated by the tensile force of the spring 8. The tip of the guide plate 5b is urged clockwise and comes into contact with the stopper 10a. The transfer member guide plate 5b is provided with a plunger 9 for pulling down the transfer member guide plate 5b against the tensile force of the spring 8 and moving the guide plate 5b clockwise. 10b, a stopper 11 against which the rear end of the transfer member guide plate 5b comes into contact is a transfer corotron;
A micro switch 12 activates the plunger 9 when pushed by the transfer member 4.

以上が本実施例の構成であるが、次にその作用
について述べると、コピー動作が始まると、転写
部材4は、上下のガイド板6aと6bとの間を通
り、更に上下の送出ローラ2,3に挾まれて送出
され、更に上下のガイド板5aと5bとの間を通
り、ドラム1の周面へガイド移送されるのである
が、このときの下側ガイド板5bの右端部は、第
3図に示す如く、スプリング8により引き上げら
れているために、そのガイド板5bの左端部はス
トツパー10aに当接されるまで押し下げられて
いるため、このガイド板5bの左端とドラム1と
の間隔は開くと共にこのガイド板5bの水平面に
対する傾斜角は小さくなつている。このように位
置規制されているガイド板5b上をガイドされた
転写部材4は、ドラム1面に沿つて移送され、そ
の転写部材4の先端部でマイクロスイツチ12を
押動すると、第4図に示す如く、プランジヤー9
が動作して、ガイド板5bの右端部はスプリング
8の弾力に抗して引き下げられるため、そのガイ
ド板5bの左端はドラム1の周面に非常に接近す
るように移動する。従つてこのようにガイド板5
bが移動することにより移送中の転写部材4と、
ドラム1との密着性は高められ、鮮明な転写が得
られる効果がある。この転写が終えた転写部材4
の尾端部がマイクロスイツチ12を通過すると、
このマイクロスイツチは復元し、これによりプラ
ンジヤ7の通電が断たれるためガイド板5bは第
3図に示す位置に復元し次の転写部材が送られて
くるのを待つ。
The above is the configuration of this embodiment. Next, the operation will be described. When the copying operation starts, the transfer member 4 passes between the upper and lower guide plates 6a and 6b, and further the upper and lower delivery rollers 2, 3, and then passed between the upper and lower guide plates 5a and 5b and guided to the circumferential surface of the drum 1. At this time, the right end of the lower guide plate 5b As shown in FIG. 3, since the left end of the guide plate 5b is pushed down until it comes into contact with the stopper 10a because it is pulled up by the spring 8, the distance between the left end of the guide plate 5b and the drum 1 is As the guide plate 5b opens, the angle of inclination of the guide plate 5b with respect to the horizontal plane becomes smaller. The transfer member 4 guided on the guide plate 5b whose position is regulated in this manner is transferred along the surface of the drum 1, and when the micro switch 12 is pushed with the tip of the transfer member 4, the transfer member 4 is moved as shown in FIG. As shown, plunger 9
As a result, the right end of the guide plate 5b is pulled down against the elasticity of the spring 8, so that the left end of the guide plate 5b moves very close to the circumferential surface of the drum 1. Therefore, the guide plate 5
The transfer member 4 is being transferred due to the movement of b.
Adhesion with the drum 1 is improved, and clear transfer can be obtained. Transfer member 4 after this transfer has been completed
When the tail end of passes through the micro switch 12,
This microswitch returns to its original state, and as a result, the current to the plunger 7 is cut off, so that the guide plate 5b returns to the position shown in FIG. 3 and waits for the next transfer member to be sent.

以上のように本考案は、像担体上の画像を転写
部材上に転写する転写位置へ、転写部材を案内す
るガイド部材が、上記像担体上に転写部材が接触
する際の第1の位置と、その後にとる第2の位置
との2つの位置を転写部材の進行位置に同期して
取り得る様に構成した転写ガイドであるから、こ
の転写ガイドによれば、ガイド部材の第1の位置
を、そのガイド部材の送り方向と像担体上の接線
とのなす角度が小さくなるように設定し、第2の
位置をガイド部材の送り方向に像担体上の接線と
のなす角が大となるように設定することにより、
ガイド部材の第1の位置における転写部材の先端
部の転写ずれが起きにくくなり、またそのガイド
部材の上記角度が大きくなるように動作させるこ
とにより、像担体と転写部材との密接力を高める
ことができるので、従来では特に腰の強い転写部
材への鮮明転写が不可能とされていた転写が、本
考案によつて解決され、腰の強い転写部材への転
写を非常に効率よく、しかも良質、かつ鮮明なコ
ピーを得ることができる効果がある。
As described above, in the present invention, the guide member that guides the transfer member to the transfer position where the image on the image carrier is transferred onto the transfer member is located at the first position when the transfer member contacts the image carrier. This transfer guide is configured so that it can take the following two positions in synchronization with the advancing position of the transfer member, so according to this transfer guide, the first position of the guide member can be , the second position is set so that the angle between the feeding direction of the guide member and the tangent on the image carrier becomes small, and the second position is set so that the angle between the feeding direction of the guide member and the tangent on the image carrier becomes large. By setting
To increase the contact force between the image carrier and the transfer member by operating the guide member in such a manner that transfer misalignment of the leading end portion of the transfer member at the first position of the guide member is less likely to occur and the above-mentioned angle of the guide member is increased. This invention solves the problem of transfer, which was conventionally considered impossible to transfer clearly to particularly stiff transfer members, and makes transfer to stiff transfer members extremely efficient and of high quality. , and has the effect of making it possible to obtain clear copies.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図及び第2図は、従来例の説明図、第3図
及び第4図は本考案の実施例を示し、第3図は給
紙時の説明図、第4図は転写時の説明図である。 1……ドラム、2,3……送出ローラ、4……
転写部材、5a,5b……ガイド板、6a,6b
……ガイド板、7……支軸、8……スプリング、
9……プランジヤ、10a,10b……ストツパ
ー、11……転写コロトロン、12……マイクロ
スイツチ。
Figures 1 and 2 are explanatory diagrams of a conventional example, Figures 3 and 4 are illustrations of an embodiment of the present invention, Figure 3 is an illustration of paper feeding, and Figure 4 is an illustration of transfer. It is a diagram. 1... Drum, 2, 3... Delivery roller, 4...
Transfer member, 5a, 5b...Guide plate, 6a, 6b
... Guide plate, 7 ... Support shaft, 8 ... Spring,
9... Plunger, 10a, 10b... Stopper, 11... Transfer corotron, 12... Micro switch.

Claims (1)

【実用新案登録請求の範囲】 像担持体上の像を転写部材に転写する転写装置
において、 転写部材を像担持体に案内するためにあり、像
担持体に転写部材の先端が接触するように、この
転写部材を案内する第1の位置と、像担持体に対
して上記第1の位置より近く、像担持体面に接近
する第2の位置とに移動可能なガイド手段と、 上記ガイド手段を第1の位置と第2の位置とに
移動させる駆動手段と、 上記転写部材の位置を検知する検知手段と、 を備え 上記検知手段の検知に基づいて転写部材の先端
が像担持体に接触した後、上記ガイド手段を第1
の位置から第2の位置へ駆動手段により移動させ
ることを特徴とする転写装置。
[Claims for Utility Model Registration] In a transfer device that transfers an image on an image carrier to a transfer member, the transfer member is provided to guide the transfer member to the image carrier, and the tip of the transfer member is in contact with the image carrier. , a guide means movable between a first position for guiding the transfer member and a second position closer to the image carrier surface than the first position with respect to the image carrier; a driving means for moving the transfer member between a first position and a second position; and a detection means for detecting the position of the transfer member; the tip of the transfer member is brought into contact with the image carrier based on the detection by the detection means. After that, the guide means is moved to the first
A transfer device characterized in that it is moved from a position to a second position by a driving means.
JP4601082U 1982-03-31 1982-03-31 transcription guide Granted JPS58149748U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4601082U JPS58149748U (en) 1982-03-31 1982-03-31 transcription guide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4601082U JPS58149748U (en) 1982-03-31 1982-03-31 transcription guide

Publications (2)

Publication Number Publication Date
JPS58149748U JPS58149748U (en) 1983-10-07
JPH0125961Y2 true JPH0125961Y2 (en) 1989-08-03

Family

ID=30057014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4601082U Granted JPS58149748U (en) 1982-03-31 1982-03-31 transcription guide

Country Status (1)

Country Link
JP (1) JPS58149748U (en)

Also Published As

Publication number Publication date
JPS58149748U (en) 1983-10-07

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