JPH0216369Y2 - - Google Patents
Info
- Publication number
- JPH0216369Y2 JPH0216369Y2 JP1982173889U JP17388982U JPH0216369Y2 JP H0216369 Y2 JPH0216369 Y2 JP H0216369Y2 JP 1982173889 U JP1982173889 U JP 1982173889U JP 17388982 U JP17388982 U JP 17388982U JP H0216369 Y2 JPH0216369 Y2 JP H0216369Y2
- Authority
- JP
- Japan
- Prior art keywords
- transfer paper
- transfer
- paper
- charger
- gripper
- 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
Links
- 238000000926 separation method Methods 0.000 claims description 34
- 230000003068 static effect Effects 0.000 claims description 31
- 230000008030 elimination Effects 0.000 claims description 21
- 238000003379 elimination reaction Methods 0.000 claims description 21
- 210000000078 claw Anatomy 0.000 claims description 13
- 239000003989 dielectric material Substances 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 9
- 108091008695 photoreceptors Proteins 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- 239000005041 Mylar™ Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Description
【考案の詳細な説明】
（技術分野）
この考案は、静電複写機の転写紙分離装置、特
に胴部切除型転写ドラムの帯状連繋部に設けられ
たペーパーグリツパーにより転写紙の先端部を把
持して転写紙を転写ドラム周面に巻装するととも
に、転写後の転写紙の転写ドラムからの分離を、
転写紙除電チヤージヤ、ペーパーグリツパーおよ
び分離爪の三者により行なうタイプの転写紙分離
装置に関する。[Detailed description of the invention] (Technical field) This invention is based on a transfer paper separation device of an electrostatic copying machine, in particular, a paper gripper provided in a belt-like connecting part of a trunk cut-off type transfer drum. Wrap the transfer paper around the transfer drum by grasping it, and separate the transfer paper from the transfer drum after transfer.
The present invention relates to a transfer paper separation device of the type that uses a transfer paper static elimination charger, a paper gripper, and a separation claw.
（従来技術）
まず初めに、このようなタイプの転写紙分離装
置を備えた静電複写機の一例を、第１図および第
２図を参照して説明する。(Prior Art) First, an example of an electrostatic copying machine equipped with this type of transfer paper separation device will be described with reference to FIGS. 1 and 2.
表面に光導電層を有する感光体ドラム１の周辺
には、その反時計回りの回転方向に沿つて、帯電
チヤージヤ２、イレーズランプ３、イエロー現像
装置４、マゼンタ現像装置５、シアン現像装置
６、転写ドラム７、第１除電チヤージヤ８、クリ
ーニング装置９、第２除電チヤージヤ１０等が配
置されている。また、感光体ドラム１の上方に
は、露光光学系１１が配置されており、これは、
原稿台ガラス１２上のカラー原稿１３を照明する
ための露光ランプ１４、これと一体的に図におい
て左方向に速度Ｖで移動する第１ミラー１５、速
度Ｖ／２で同方向に移動する第２ミラー１６およ
び第３ミラー１７、静止する結像レンズ１８、第
４ミラー１９、そして色分解フイルター２０等を
含んでいる。 Around the photosensitive drum 1 having a photoconductive layer on its surface, along the counterclockwise direction of rotation, there are a charging charger 2, an erase lamp 3, a yellow developing device 4, a magenta developing device 5, a cyan developing device 6, A transfer drum 7, a first static elimination charger 8, a cleaning device 9, a second static elimination charger 10, and the like are arranged. Further, an exposure optical system 11 is arranged above the photoreceptor drum 1, and this
An exposure lamp 14 for illuminating the color original 13 on the original table glass 12, a first mirror 15 that integrally moves to the left in the figure at a speed V, and a second mirror 15 that moves in the same direction at a speed V/2. It includes a mirror 16, a third mirror 17, a stationary imaging lens 18, a fourth mirror 19, a color separation filter 20, and the like.
感光体ドラム１に接して、その接触点において
感光体ドラム１表面と同方向に移動する転写ドラ
ム７は、第２図に示すように、円筒をその両端部
２１ａ，２１ｂおよびこれらを繋ぐ帯状連繋部２
１ｃを残して切除した回転枠体２１と、この枠体
の切除部を覆うように貼設されたマイラーのよう
な誘電体フイルム２２により構成され、その一端
に設けられたギヤ２３が、感光体ドラム１の一端
に設けられたギヤ２４と噛み合うことにより、感
光体ドラム１と転写ドラム７とが同期をとられ
る。帯状連繋部２１には、その長手方向に沿つて
開口２５が設けられ、この開口から、第１図に略
図するようにペーパグリツパー２６が覗き、この
グリツパー２６によつて転写紙の先端が転写ドラ
ム７に保持される。 As shown in FIG. 2, the transfer drum 7, which comes into contact with the photoreceptor drum 1 and moves in the same direction as the surface of the photoreceptor drum 1 at its contact point, has a cylinder with both ends 21a, 21b and a belt-like link connecting these ends. Part 2
It consists of a rotating frame body 21 which has been cut out leaving only part 1c, and a dielectric film 22 such as mylar attached to cover the cut out part of this frame body, and a gear 23 provided at one end of the frame body By meshing with a gear 24 provided at one end of the drum 1, the photosensitive drum 1 and the transfer drum 7 are synchronized. An opening 25 is provided along the longitudinal direction of the band-like connecting portion 21, and a paper gripper 26 looks through this opening as schematically illustrated in FIG. is maintained.
感光体ドラム１の表面は、まず帯電チヤージヤ
２により所定極性に一様に帯電され、次いでイレ
ーズランプ３により非画像領域の帯電電荷が消去
される。そして露光光学系１１を通して第１回の
画像露光が行なわれ、帯電電荷が原稿像に対応し
て選択的に消去され、そこに静電潜像が形成され
る。この第１回の画像露光のときには、色分解フ
イルター２０のうちのブルーフイルターBFが使
用され、これにより感光体ドラム１上に形成され
る静電潜像は、ブルーの補色であるイエロー成分
を主体としたものになり、これがイエロー現像装
置４からイエロートナーを供給されて現像され
る。この現像イエロートナー像は、給紙カセツト
２７，２８から選択されて送られてきた、そして
グリツパー２６により転写ドラム７の周面に巻装
された転写紙に、感光体ドラム１と転写ドラム７
とが接する位置で重ねられ、その位置の転写ドラ
ム７内側に配置された転写チヤージヤ２９により
転写紙に転写される。転写後の感光体ドラム１
は、その表面の残留電位を第１除電チヤージヤ８
により除電され、残留トナーをクリーニング装置
９により除去され、さらに第２除電チヤージヤ１
０による除電を受けて、第１回の複写プロセスを
終える。続いて第２回の複写プロセスに入り、帯
電の後、グリーンフイルターGFを使用して潜像
が形成され、これがマゼンタ現像装置５によつて
現像され、現像画像が転写ドラムに保持された転
写紙上のイエロー画像に重ね転写される。次いで
同様に除電、クリーニングが行なわれた後、第３
回の複写プロセスが行なわれ、レツドフイルター
RFとシアン現像装置６を使用してシアントナー
像が形成され、これが転写ドラム７上の転写紙に
さらに重ね転写される。こうして転写電圧を順次
増加させた３回の画像転写が終ると、転写ドラム
７とその上の転写紙とがダブル除電チヤージヤ３
０，３１により除電され、グリツパー２６が転写
紙の先端を外して持ち上げると、転写紙が分離爪
３２により転写ドラム７から分離され、次いで搬
送ベルト３３により定着装置３４に送られて転写
カラートナー像の定着を受けた後、排紙コロ３５
によつてトレイ３６上に排出される。一方の感光
体ドラム１は、同様に除電、クリーニングを受け
て、その複写プロセスを完了する。なお、符号３
７はブレーキである。 The surface of the photosensitive drum 1 is first uniformly charged to a predetermined polarity by the charger 2, and then the erase lamp 3 erases the charges in the non-image area. Then, a first image exposure is performed through the exposure optical system 11, and the charged charges are selectively erased in correspondence with the original image, and an electrostatic latent image is formed thereon. During this first image exposure, the blue filter BF of the color separation filter 20 is used, and the electrostatic latent image formed on the photoreceptor drum 1 is mainly composed of a yellow component, which is a complementary color to blue. This is developed by being supplied with yellow toner from the yellow developing device 4. This developed yellow toner image is selected and sent from the paper feed cassettes 27 and 28, and is transferred to the photosensitive drum 1 and the transfer drum 7 onto the transfer paper wrapped around the circumference of the transfer drum 7 by the gripper 26.
The images are overlapped at the position where they are in contact with each other, and transferred onto the transfer paper by the transfer charger 29 disposed inside the transfer drum 7 at that position. Photosensitive drum 1 after transfer
The residual potential on the surface is reduced by the first static elimination charger 8.
The remaining toner is removed by the cleaning device 9, and the second static eliminating charger 1
After the static electricity is removed by 0, the first copying process ends. Next, the second copying process begins, and after charging, a latent image is formed using a green filter GF, which is developed by the magenta developing device 5, and the developed image is transferred onto the transfer paper held by the transfer drum. The image is superimposed on the yellow image. Next, static electricity removal and cleaning are performed in the same manner, and then the third
Once the duplication process is performed, the red filter
A cyan toner image is formed using RF and a cyan developing device 6, and this is further transferred onto a transfer paper on a transfer drum 7 in an overlapping manner. When the image transfer is completed three times with the transfer voltage being increased in this way, the transfer drum 7 and the transfer paper thereon are transferred to the double static elimination charger 3.
When the gripper 26 removes the leading edge of the transfer paper and lifts it up, the transfer paper is separated from the transfer drum 7 by the separation claw 32, and then sent to the fixing device 34 by the conveyor belt 33, where the transfer color toner image is transferred. After being fixed, the paper ejection roller 35
is discharged onto the tray 36. One photoreceptor drum 1 is similarly subjected to charge removal and cleaning to complete the copying process. In addition, code 3
7 is a brake.
上記の静電複写機は、特公昭54−19750号公報
に記載されたものとほぼ同様であるが、他のこの
ような複写機の例としては、特公昭の50−93434
号、51−78338号、53−104248号、55−18653号、
55−110278号等の各公報に示されたものがある。 The electrostatic copying machine mentioned above is almost the same as that described in Japanese Patent Publication No. 54-19750, but other examples of such copying machines include Japanese Patent Publication No. 50-93434.
No. 51-78338, No. 53-104248, No. 55-18653,
Some of them are shown in various publications such as No. 55-110278.
このような静電複写機における従来の転写紙分
離装置においては、例えば特公昭52−11933号公
報に記載されているように転写紙除電チヤージヤ
が転写紙分離位置の後方側近傍に設けられてい
る。このため、転写紙に対する除電効果が低くし
かも転写紙が均一に除電されないので、剥離放電
によつてトナー像が乱されたり、転写紙の分離搬
送が行なわれにくい欠点がある。また、ペーパー
グリツパーに対する除電効果も低いので、転写紙
先端の分離が不安定であり、これを高めるために
は絶縁処理する必要がある。第３図に示す別の従
来例においては、転写紙除電チヤージヤ３０は、
分離爪３２の先端よりも手前側に配置されている
が、ペーパーグリツパー２６が転写紙３８の先端
把持を解除する位置が、除電チヤージヤ３０のコ
ロナ照射領域Ａ内に位置しているので、転写紙３
８およびグリツパー２６の先端が持ち上がつた状
態で除電が行なわれる。このため、除電が不安定
でトナー像の画質および転写紙の分離搬送に悪影
響を及ぼすことがあり、チヤージヤ３０に近づい
たトナー像からトナーが飛散してトナー像にすじ
やむらを発生させたり、飛散したトナーがコロナ
ワイヤに付着してその性能を低下させたり、同様
にチヤージヤ３０に近づいた転写紙グリツパー２
６の先端部に落電して装置の安全性を損つたりす
る。 In the conventional transfer paper separation device of such an electrostatic copying machine, a transfer paper static elimination charger is provided near the rear side of the transfer paper separation position, as described in Japanese Patent Publication No. 52-11933, for example. . For this reason, the static eliminating effect on the transfer paper is low and the static electricity on the transfer paper is not uniformly eliminated, resulting in disadvantages such as the toner image being disturbed by peeling discharge and the transfer paper being difficult to separate and convey. Furthermore, since the static elimination effect on the paper gripper is low, the separation of the leading edge of the transfer paper is unstable, and in order to improve this, it is necessary to perform insulation treatment. In another conventional example shown in FIG. 3, the transfer paper static elimination charger 30 is
Although the paper gripper 26 is disposed on the front side of the tip of the separation claw 32, the position where the paper gripper 26 releases its grip on the tip of the transfer paper 38 is located within the corona irradiation area A of the static elimination charger 30. Transfer paper 3
Static electricity is removed with the tips of the gripper 8 and the gripper 26 lifted up. For this reason, static elimination is unstable, which may adversely affect the image quality of the toner image and the separation and conveyance of the transfer paper, and the toner may scatter from the toner image that approaches the charger 30, causing streaks or unevenness on the toner image. Scattered toner may adhere to the corona wire and degrade its performance, or the transfer paper gripper 2 may also get close to the charger 30.
Electricity may fall on the tip of 6, compromising the safety of the device.
（考案の目的）
この考案の目的は、したがつて、転写紙の分離
搬送を確実に行なうことのできる静電複写機の転
写紙分離装置を提供することにある。(Purpose of the invention) Therefore, the object of the invention is to provide a transfer paper separation device for an electrostatic copying machine that can reliably separate and convey transfer paper.
この考案のその上の目的は、トナー像を乱すこ
とのない上記転写紙分離装置を提供することにあ
る。 A further object of this invention is to provide the above-mentioned transfer paper separation device that does not disturb the toner image.
この考案のさらにその上の目的は、装置の性
能、信頼性および安全性を損うことのない、かつ
耐久性、生産性および経済性の高い上記転写紙分
離装置を提供することにある。 A further object of this invention is to provide the above-mentioned transfer paper separation device which does not impair the performance, reliability and safety of the device and is highly durable, productive and economical.
この考案の上記および他の目的にしたがつて、
ペーパーグリツパーおよび分離爪による転写紙分
離位置を、転写紙除電チヤージヤのコロナ照射領
域の下流側外側に定めた転写紙分離装置が提供さ
れる。 In accordance with the above and other objects of this invention,
A transfer paper separation device is provided in which a transfer paper separation position by a paper gripper and a separation claw is set to the downstream outer side of a corona irradiation area of a transfer paper static elimination charger.
以下、この考案の一実施例を第４図を参照して
説明する。 An embodiment of this invention will be described below with reference to FIG.
（考案の構成）
転写ドラム７の回転枠体２１の切除部周面に貼
着される誘電体フイルム２２としては、100μm程
度のマイラーまたはポリエステルフイルムが使用
され、その上に転写紙３８が、ペーパーグリツパ
ー２６によりその先端部を把持されながら巻装さ
れる。転写チヤージヤ２９により感光体ドラム１
上のトナー像３９が転写紙３８上に転写され、こ
のとき転写紙３８は誘電体フイルム２２上に静電
的に密着する。必要回数の転写後、転写紙３８の
誘電体フイルム２２からの分離を容易にするため
に、転写紙３８は転写紙除電チヤージヤ３０によ
り、誘電体フイルム２２はこのための除電チヤー
ジヤ３１により、それぞれその表面電位がゼロボ
ルト付近になるように除電される。転写紙除電チ
ヤージヤ３０は、転写紙分離時の剥離放電を防止
して転写トナー像の乱れを防ぎ、別の除電チヤー
ジヤ３１は、転写チヤージヤ印加電圧の高圧化を
防止して転写効率、信頼性および安全性の向上を
図ることにも役立てられる。転写チヤージヤ２９
には、トナー像３９の帯電極性とは逆極性の直流
電圧が印加されるが、両除電チヤージヤ３０，３
１には交流電圧が印加される。(Structure of the invention) As the dielectric film 22 stuck to the circumferential surface of the cutout part of the rotating frame 21 of the transfer drum 7, a Mylar or polyester film of about 100 μm is used, and a transfer paper 38 is placed on top of the dielectric film 22. The tip is gripped by the gripper 26 and wound. The photosensitive drum 1 is moved by the transfer charger 29.
The upper toner image 39 is transferred onto the transfer paper 38, and at this time, the transfer paper 38 is electrostatically brought into close contact with the dielectric film 22. After the required number of transfers, in order to easily separate the transfer paper 38 from the dielectric film 22, the transfer paper 38 and the dielectric film 22 are separated by a transfer paper static elimination charger 30 and a static elimination charger 31 for this purpose, respectively. Static electricity is removed so that the surface potential is near zero volts. The transfer paper static elimination charger 30 prevents peeling discharge when the transfer paper is separated to prevent disturbance of the transferred toner image, and another static elimination charger 31 prevents the voltage applied to the transfer charger from increasing to improve transfer efficiency, reliability, and It can also be used to improve safety. Transfer charger 29
A DC voltage having a polarity opposite to that of the toner image 39 is applied to the chargers 30, 3.
1 is applied with an alternating current voltage.
両除電チヤージヤ３０，３１による除電後、転
写紙３８は、その先端部をペーパーグリツパー２
６により持ち上げられる。ペーパーグリツパー２
６が転写紙先端の把持を解除してこれを持ち上げ
るための機構は、例えば本願と同一出願人による
特願昭56−169647号明細書に説明されているよう
なカムを使用することができるが、他の印刷機等
に用いられている機構も適宜使用できる。このグ
リツパー２６による転写紙先端把持解除は、除電
チヤージヤ３０のコロナ照射領域Ａの下流側外側
の位置で行なわれる。換言すれば、こうするよう
に除電チヤージヤ３０の位置またはコロナ照射領
域Ａの範囲を定めるかまたはグリツパー２６の解
除位置を定める。 After the static electricity is removed by both the static electricity removal chargers 30 and 31, the leading end of the transfer paper 38 is held by the paper gripper 2.
It is lifted by 6. paper gripper 2
The mechanism by which 6 releases the grip on the leading edge of the transfer paper and lifts it up can use a cam, for example, as described in Japanese Patent Application No. 169647/1983 filed by the same applicant as the present application. , mechanisms used in other printing machines can also be used as appropriate. The gripper 26 releases the leading edge of the transfer paper at a downstream outer position of the corona irradiation area A of the static elimination charger 30. In other words, in this way, the position of the static elimination charger 30 or the range of the corona irradiation area A is determined, or the release position of the gripper 26 is determined.
グリツパー２６により持ち上げられた転写紙３
８の先端部は、続いて分離爪３２の先端部によつ
てすくい上げられる。分離爪３２の先端部は、ギ
ヤツプ維持ローラ４０によつて回転枠体２１周面
から１〜1.5mm程度離れている。ペーパーグリツ
パー２６の先端は、その解除動作の間、図示され
ない解除カムに回動させられて鎖線４１で示すよ
うな軌跡を画く。このためその行路を邪魔しない
ように、分離爪３２は回転枠体２１の軸方向に間
隔をあけて設けられており、グリツパー２６には
分離爪３２先端を逃げるための溝が設けられてい
る。先端部を分離爪３２によりすくい上げられた
転写紙３８は、回転枠体２１の回転により順次送
り込まれて回転枠体２１から分離され、搬送ベル
ト３３により定着装置に向けて送られる。このと
き、転写紙３８の除電チヤージヤ３０，３１の上
流側部分は、誘電体フイルム２２に静電的に密着
した状態にあり、この静電吸着力と転写紙３８自
身の腰の力により、転写紙の分離搬送が確実に行
なわれる。 Transfer paper 3 lifted by gripper 26
8 is then scooped up by the tip of the separating claw 32. The tip of the separating claw 32 is separated from the circumferential surface of the rotating frame 21 by about 1 to 1.5 mm by a gap maintaining roller 40. During the release operation, the tip of the paper gripper 26 is rotated by a release cam (not shown) to draw a trajectory as shown by a chain line 41. For this reason, the separation claws 32 are provided at intervals in the axial direction of the rotary frame 21 so as not to interfere with their path, and the gripper 26 is provided with a groove for allowing the tips of the separation claws 32 to escape. The transfer paper 38 whose leading end has been scooped up by the separating claw 32 is sequentially fed in by the rotation of the rotating frame 21, separated from the rotating frame 21, and sent toward the fixing device by the conveyor belt 33. At this time, the portion of the transfer paper 38 on the upstream side of the static elimination chargers 30 and 31 is in close electrostatic contact with the dielectric film 22, and due to this electrostatic attraction force and the stiffness of the transfer paper 38 itself, the transfer Separation and conveyance of paper is reliably performed.
（考案の効果）
以上のように、この考案による転写紙分離装置
は、転写紙の除電を完全に終つた後に、ペーパー
グリツパーによる転写紙先端の把持解除と分離爪
による転写紙の分離を行なうので、転写紙の分離
搬送が確実に行なわれる。また、異常放電が発生
しないので、画質低下もなく、装置の性能、信頼
性および安定性が大幅に向上する。さらに、ペー
パーグリツパーに絶縁処理することなく落電等の
異常放電を防止し、かつこれを十分に除電するこ
とができるので、分離の確実性とともに装置の耐
久性、生産性および経済性を向上させることがで
きる。また、この考案による転写紙分離装置を、
第１図に示すような複数回の画像転写を行なうカ
ラー複写機に適用すれば、転写紙の分離搬送が確
実に行なわれるので、分離時の画像の位置ずれが
ない。(Effects of the invention) As described above, the transfer paper separation device according to this invention releases the grip of the leading edge of the transfer paper by the paper gripper and separates the transfer paper by the separation claw after the transfer paper is completely neutralized. Therefore, separation and conveyance of the transfer paper is reliably performed. Furthermore, since no abnormal discharge occurs, there is no deterioration in image quality, and the performance, reliability, and stability of the apparatus are greatly improved. Furthermore, it is possible to prevent abnormal discharges such as electric shock without insulating the paper gripper, and to sufficiently remove static electricity, which improves the reliability of separation as well as the durability, productivity, and economy of the equipment. can be improved. In addition, the transfer paper separation device based on this invention,
When applied to a color copying machine that performs image transfer a plurality of times as shown in FIG. 1, the transfer paper can be reliably separated and conveyed, so that there is no displacement of the image during separation.
この考案による転写紙分離装置は、第１図に示
すようなカラー複写機の他に、胴部切除型の転写
ドラムを使用する種々の複写機に適用可能であ
り、転写ドラムの切除部には、上記のような誘電
体フイルムの他に、メツシユやワイヤを張つたも
のや何も設けないものなど、種々の形式のものが
使用可能である。 In addition to the color copying machine shown in Fig. 1, the transfer paper separation device according to this invention can be applied to various copying machines that use a transfer drum with a cut-out body. In addition to the above-mentioned dielectric films, various types of films can be used, such as those with mesh or wires, and those without any.
第１図は、この考案が適用されるカラー複写機
の一例を示す概略図、第２図は、第１図に示す装
置における感光体ドラムと転写ドラムを示す概略
斜視図、第３図は、従来の転写紙分離装置の一例
を示す概略図、第４図は、この考案による転写紙
分離装置の一例を示す概略図である。
１……感光体ドラム、７……転写ドラム、２１
……回転枠体、２２……誘電体フイルム、２６…
…ペーパーグリツパー、２９……転写チヤージ
ヤ、３０……転写紙除電チヤージヤ、３２……分
離爪、３３……搬送ベルト、３８……転写紙。
FIG. 1 is a schematic diagram showing an example of a color copying machine to which this invention is applied, FIG. 2 is a schematic perspective view showing a photosensitive drum and a transfer drum in the apparatus shown in FIG. 1, and FIG. FIG. 4 is a schematic diagram showing an example of a conventional transfer paper separating device. FIG. 4 is a schematic diagram showing an example of a transfer paper separating device according to this invention. 1...Photosensitive drum, 7...Transfer drum, 21
... Rotating frame body, 22 ... Dielectric film, 26 ...
... Paper gripper, 29 ... Transfer charger, 30 ... Transfer paper static elimination charger, 32 ... Separation claw, 33 ... Conveyance belt, 38 ... Transfer paper.
Claims (1)
部を残して切除した回転枠体と、 前記回転枠体の切除部を覆う誘電体からなる転
写紙支持手段と、 前記回転枠体の帯状連繋部に設けられて、転写
紙の先端部を把持して転写紙を前記回転枠体の周
面に巻装するためのペーパーグリツパーと、 前記回転枠体の内側に設けられて、これに接し
て同方向に移動するトナー像担持体上のトナー像
を前記回転枠体周面に巻装された前記転写紙表面
に転写するための転写チヤージヤと、 所定の転写終了後に前記転写紙を除電するため
の転写紙除電チヤージヤと、 前記ペーパーグリツパーによる前記転写紙先端
部の把持解除に続いて前記転写紙を前記回転枠体
周面から分離するための分離爪を備えた静電複写
機において、 前記ペーパーグリツパーおよび分離爪による転
写紙の分離位置を、前記転写紙除電チヤージヤの
コロナ照射領域外の下流側に定め、 前記転写紙先端部の把持解除は前記除渉チヤー
ジヤのコロナ照射下流側の位置で行なうことを特
徴とする静電複写機の転写紙分離装置。[Claims for Utility Model Registration] A rotary frame body obtained by cutting out a cylinder leaving both ends thereof and a band-like connecting part connecting these parts; a transfer paper support means made of a dielectric material that covers the cut out part of the rotary frame body; a paper gripper provided on the belt-like connecting portion of the rotating frame for gripping the leading end of the transfer paper and wrapping the transfer paper around the circumferential surface of the rotating frame; a transfer charger for transferring the toner image on the toner image carrier, which is provided and moves in the same direction in contact with the toner image carrier, onto the surface of the transfer paper wrapped around the circumferential surface of the rotating frame; a transfer paper static elimination charger for later discharging the transfer paper; and a separation claw for separating the transfer paper from the circumferential surface of the rotating frame body after the paper gripper releases the grip on the leading edge of the transfer paper. In the electrostatic copying machine, the separation position of the transfer paper by the paper gripper and the separation claw is set on the downstream side outside the corona irradiation area of the transfer paper static elimination charger, and the gripping of the leading end of the transfer paper is released at the A transfer paper separation device for an electrostatic copying machine, characterized in that a transfer paper separation device for an electrostatic copying machine is operated at a position downstream of corona irradiation of a webbing charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17388982U JPS5979860U (en) | 1982-11-17 | 1982-11-17 | Transfer paper separation device for electrostatic copying machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17388982U JPS5979860U (en) | 1982-11-17 | 1982-11-17 | Transfer paper separation device for electrostatic copying machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5979860U JPS5979860U (en) | 1984-05-30 |
| JPH0216369Y2 true JPH0216369Y2 (en) | 1990-05-07 |
Family
ID=30378697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17388982U Granted JPS5979860U (en) | 1982-11-17 | 1982-11-17 | Transfer paper separation device for electrostatic copying machines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5979860U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2675046B2 (en) * | 1988-03-01 | 1997-11-12 | 株式会社リコー | Transfer device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5211933A (en) * | 1975-07-18 | 1977-01-29 | Canon Inc | Transcribing device |
| JPS53104248A (en) * | 1977-02-24 | 1978-09-11 | Canon Inc | Transfer device |
| JPS5692551A (en) * | 1979-12-26 | 1981-07-27 | Ricoh Co Ltd | Color copying machine |
| JPS56123578A (en) * | 1980-03-03 | 1981-09-28 | Canon Inc | Copying machine |
-
1982
- 1982-11-17 JP JP17388982U patent/JPS5979860U/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5211933A (en) * | 1975-07-18 | 1977-01-29 | Canon Inc | Transcribing device |
| JPS53104248A (en) * | 1977-02-24 | 1978-09-11 | Canon Inc | Transfer device |
| JPS5692551A (en) * | 1979-12-26 | 1981-07-27 | Ricoh Co Ltd | Color copying machine |
| JPS56123578A (en) * | 1980-03-03 | 1981-09-28 | Canon Inc | Copying machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5979860U (en) | 1984-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4875069A (en) | Anti-fouling device for sheet gripper | |
| US5019871A (en) | Apparatus for electrostatically absorbing an image supporting material on an image supporting carrying member based on the kind of material used | |
| EP0401977A1 (en) | An image forming apparatus | |
| EP0298505A2 (en) | An image forming apparatus | |
| JPH04149491A (en) | Image formation device | |
| US4483610A (en) | Method of cleaning a transfer material supporting member in an image forming apparatus | |
| JPH02148075A (en) | Transfer device | |
| JPH0216369Y2 (en) | ||
| JPS5950460A (en) | Multicolor image forming device | |
| JPS5990873A (en) | Transfer system of electrostatic copying machine | |
| JPS63256976A (en) | Color page printer | |
| JPH0219814Y2 (en) | ||
| JP2558674B2 (en) | Multiple copying machine | |
| JP2711903B2 (en) | Image forming device | |
| JPS6228468B2 (en) | ||
| JP2714171B2 (en) | Image forming device | |
| JPH0453313B2 (en) | ||
| JPH0435073B2 (en) | ||
| JPH07107620B2 (en) | Multiple image forming device | |
| JPH11133824A (en) | Image forming device | |
| JPH0662240B2 (en) | Sheet separation device | |
| JPH0387879A (en) | Image forming device | |
| JPS5993480A (en) | Destaticization device | |
| JPS60241075A (en) | Conveying and transferring device | |
| JPH045670A (en) | Multiple image forming device |