JPS62192776A - Transferring and peeling device for electronic photographic device - Google Patents
Transferring and peeling device for electronic photographic deviceInfo
- Publication number
- JPS62192776A JPS62192776A JP3283486A JP3283486A JPS62192776A JP S62192776 A JPS62192776 A JP S62192776A JP 3283486 A JP3283486 A JP 3283486A JP 3283486 A JP3283486 A JP 3283486A JP S62192776 A JPS62192776 A JP S62192776A
- Authority
- JP
- Japan
- Prior art keywords
- transfer
- peeling
- paper
- corona discharger
- transferring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003068 static effect Effects 0.000 claims description 12
- 230000008030 elimination Effects 0.000 claims description 10
- 238000003379 elimination reaction Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract 4
- 230000007423 decrease Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
本発明は公知である、電子写真装置に供する、転写及び
剥離装置に関する。電子写真装置としては感光ドラムに
対する除電、帯電、露光、現像、転写、及び残在トナー
の除去の各々の工程を繰り返す周辺の装置な有して成る
。上述中の転写装置に関し、且つ転写後の用紙の剥離に
も係るのであり、これを称して転写及び剥離装置として
発明に及ぶのである。以下図にて発明の一実施例を述べ
る。第１図は本発明の要部を含む（上述の周辺の装置は
省く）側面図である。感光ドラム１は導電ドラム２の外
周を感光層３にて被われて成り、軸４にて軸支され図示
にない駆動部からの、駆動に依り矢印方向の回動が付与
される。転写及び剥離装＠５は、転写用コロナ放電器６
及び、除電用コロナ放電器７とから成り、転写用コロナ
放電器６は橋形のシールド電極８内にコロナ放電ワイヤ
ー９を配し、図示にはないが直流高圧電源にシールド電
極８及びコロナ放電ワイヤー９を所定の電極に各々接続
する。除重用コロナ放電器７は、橋形のシールド電極１
０内にコロナ放電ワイヤー１１を配し、図示にない交流
高圧電源に、シールド電＋ｌｊ１．１０及びコロナ放電
ワイヤー１１を各々接続する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a known transfer and peeling device for use in an electrophotographic device. An electrophotographic apparatus includes peripheral devices that repeat the steps of neutralizing, charging, exposing, developing, transferring, and removing residual toner on a photosensitive drum. This invention relates to the above-mentioned transfer device and also relates to the separation of paper after transfer, and is referred to as the transfer and separation device in the present invention. An embodiment of the invention will be described below with reference to the drawings. FIG. 1 is a side view including the main parts of the present invention (excluding the peripheral devices mentioned above). The photosensitive drum 1 consists of a conductive drum 2 whose outer periphery is covered with a photosensitive layer 3, and is supported by a shaft 4 and rotated in the direction of the arrow by being driven by a drive section (not shown). The transfer and peeling device @5 is a corona discharger 6 for transfer.
The transfer corona discharge device 6 has a corona discharge wire 9 disposed within a bridge-shaped shield electrode 8, and although not shown in the figure, the shield electrode 8 and corona discharge are connected to a DC high-voltage power source. Each wire 9 is connected to a predetermined electrode. The weight-removing corona discharger 7 has a bridge-shaped shield electrode 1
A corona discharge wire 11 is placed inside the shield terminal 0, and the shield voltage +lj1.10 and the corona discharge wire 11 are respectively connected to an AC high-voltage power source (not shown).
第１図に示す知（転写用コロナ放電器６及び除電用コロ
ナ放電器７のシールド電極を形成する中央シールド電極
１２は除電用コロナ放電器７の開口部１３を所定量を塞
ぎ且つ適度な斜面１２２を形成する。第１図に示す如く
転写用コロナ放電器６及び除電コロナ放電器７の各々の
開口部１４及び、１３を感光ドラム１に軸４方向に対向
近接して配す。転写及び剥離装置５に対しその近くには
用紙（図示せず）の進入側には案内取１５及び一対の規
制ローラー１６を、送出側には案内板１７及び定着装置
１８を配し、用紙の搬送路１９を形成する、定着装置１
８はハロゲンランプ２０を内臓し外周にテフロン層２１
を施した金属ヒートローラー２１と、しん金２２上に所
定のシリコン層２３を形成する圧接ローラー２４との圧
接に依り所定のニップ幅を形成し矢印方向の回動を付与
し、ペーパー上のトナー像を定着するのである。以上が
第１図に示す各々の装置の構造及び一部動作の説明を行
ったが、以下本発明である、転写及び剥離装置５０作用
効果を述べる。公知である電子写真装部のｒＪ「定の工
程に依り、感光層３上に形成された、トナー像と同期的
に、規制ローラニ１６にて挟送される用紙（図示せず）
は、案内板１５上を案内され、感光ドラム１と転写用コ
ロナ放電器６の開口部１４との対向間隙間に送入される
。既にｔＳからの電圧の供給に依り、転写用コロナ放電
器６はコロナ放電が成され、その放電に依り、用紙はト
ナーとの逆極性である転写用コロナ放電器６からの電荷
の付与に依り、感光ドラム１の感光層３の転写絶域２５
に静電吸着が行われ、その際用紙上にトナー像が転写さ
れるのである。上述の転写は感光層３上のトナーの５０
〜８０％位の転写率であり、転写後の残存トナーはトナ
ー除去部（図示なし）にて除去されるのである。転写後
の用紙は、転写絶域を過ぎるが、感光Ｍ３上に静電吸着
されているので、自然には剥離が困難である従って、従
来からは、電気的な剥離法として、交流コロナ放電器の
コロナ放電に依り、用紙上の除電を行い、感光層から用
紙の剥離を行っていた。The central shield electrode 12 forming the shield electrodes of the transfer corona discharger 6 and the static elimination corona discharger 7 as shown in FIG. 122. As shown in FIG. 1, the openings 14 and 13 of the transfer corona discharger 6 and the static elimination corona discharger 7 are arranged close to and facing each other in the direction of the axis 4 of the photosensitive drum 1. Near the peeling device 5, a guide 15 and a pair of regulating rollers 16 are arranged on the paper (not shown) entrance side, and a guide plate 17 and a fixing device 18 are arranged on the delivery side, and a paper conveyance path is arranged. Fixing device 1 forming 19
8 has a built-in halogen lamp 20 and a Teflon layer 21 on the outer periphery.
A predetermined nip width is formed by the press contact between the metal heat roller 21 which has been subjected to the above-mentioned coating and the pressure roller 24 which forms a predetermined silicon layer 23 on the insulating metal 22, and rotation in the direction of the arrow is applied to the toner on the paper. It fixes the image. The structure and partial operation of each device shown in FIG. 1 have been explained above, and the effects of the transfer and peeling device 50 according to the present invention will be described below. A sheet of paper (not shown) that is fed by the regulating roller 16 in synchronization with the toner image formed on the photosensitive layer 3 by a known process of the electrophotographic equipment department.
is guided on the guide plate 15 and fed into the gap between the photosensitive drum 1 and the opening 14 of the transfer corona discharger 6. Already due to the supply of voltage from tS, corona discharge is generated in the transfer corona discharger 6, and due to this discharge, the paper is charged by the transfer corona discharger 6, which has the opposite polarity to the toner. , a transfer exclusion area 25 of the photosensitive layer 3 of the photosensitive drum 1
Electrostatic adsorption is performed, and at this time a toner image is transferred onto the paper. The above-mentioned transfer is performed by transferring 50% of the toner on the photosensitive layer 3.
The transfer rate is about 80%, and residual toner after transfer is removed by a toner removal section (not shown). After the transfer, the paper has passed the transfer limit, but since it is electrostatically attracted to the photosensitive M3, it is difficult to peel it off naturally.Therefore, conventionally, an AC corona discharger is used as an electrical peeling method. The corona discharge was used to eliminate static electricity on the paper and to separate the paper from the photosensitive layer.
従来除電にて剥離を行う場合は、除電用のコロナ放電に
依る、転写えの影響を防止すべく、用紙が感光層から離
れた位置にて除電のための交番静電荷を付与するのであ
る。従って、従来の転写のための感光層３と用紙との対
接絶域は回動方向に、２〜３ｍｍ位であり、転写効率の
低下が生じたのである。本発明は第１図に示す如く転写
の絶域は広く保持することができその対接範域は１０〜
１５ｍｍである。即ち本発明の要部である除電用コロナ
放電器７は図示の如（開口部１３を斜面を有する中央の
遮蔽電極１２に【、一部分を塞ぎ、斜面１２′で用紙の
案内を行い、所定の高さに依り、案内板１５と相俟って
、既述せる如く感光層３と用紙の対接絶域を広（するこ
とができるのであるまた遮蔽電極１２である遮蔽物にて
除電用の交番電荷を遮蔽するので転写絶域２５えの電気
的な影響を無くすことができ、用紙の感光層３えの非対
接位置２６にて除電のための交番電荷を用紙へ付与でき
るので安定した剥離を行うことができるのである。剥離
された用紙は案内板１７上を案内搬送され定着部１８へ
挿入され定着を行い送出されるのである、定着時には転
写中の用紙を引張らないよう搬送速度を僅か遅くするの
であり、用紙え弛みが生ずると、従来は転写部での感光
層と用紙とは吸着力が弱まり転写効率が低下したが、本
発明の除電用コロナ放電器７の活用に依り、用紙の弛み
の影響を除去することができるのである。Conventionally, when peeling is performed by static elimination, an alternating static charge is applied to the paper at a position away from the photosensitive layer in order to prevent the influence of transfer due to corona discharge for static elimination. Therefore, the contact area between the photosensitive layer 3 and paper for conventional transfer is about 2 to 3 mm in the rotational direction, resulting in a decrease in transfer efficiency. In the present invention, as shown in FIG.
It is 15mm. That is, the corona discharger 7 for static elimination, which is the main part of the present invention, is configured as shown in the figure (with an opening 13 connected to the central shielding electrode 12 having an inclined surface, a portion of which is closed, a sheet guided by the inclined surface 12', and a predetermined position). Depending on the height, together with the guide plate 15, it is possible to widen the contact area between the photosensitive layer 3 and the paper as described above. Since the alternating charges are shielded, the electrical influence of the transfer isolation area 25 can be eliminated, and the alternating charges for static elimination can be applied to the paper at the non-contact position 26 of the photosensitive layer 3 of the paper, resulting in stable transfer. The peeled paper is guided and conveyed on the guide plate 17, inserted into the fixing section 18, fixed, and sent out.During fixing, the conveyance speed is adjusted so as not to pull the paper being transferred. Conventionally, when paper slack occurs, the adhesion force between the photosensitive layer and the paper in the transfer section weakens and the transfer efficiency decreases, but by utilizing the static elimination corona discharger 7 of the present invention, , the influence of paper slack can be removed.
以上述、べた如く本発明の転写及び剥離装置５に依れば
簡単な機構にて転写の高効率を安定した形で保持できる
と共に剥離も効果も安定持続することができる。なは本
記述は一実施例であり、主旨はその作用効果にあり、本
構造に限るだけではないAs described above, according to the transfer and peeling device 5 of the present invention, high transfer efficiency can be stably maintained with a simple mechanism, and peeling and effects can be maintained stably. This description is just one example, and the gist is its function and effect, and is not limited to this structure.
図は本発明に係り第１図は要部を含む側面図である
５・争・・・転写及び剥離装置 ６・・・・・転写用コ
叶放電器７・・・・・除電用コロナ放電器 ８・・・
・・シールド電極９・・・・・コロナ放電ワイヤー １
０・０■シールド電極１１・・・・コ叶放電ワイヤー
１２・・・・・中央８ド電極１２’−＊ −＊斜 面The figures relate to the present invention, and Figure 1 is a side view including the main parts. Electric appliances 8...
...Shield electrode 9...Corona discharge wire 1
0・0 ■ Shield electrode 11... Kono discharge wire
12...Central 8th electrode 12'-*-*slope
Claims (1)
記転写及び剥離装置である、転写用コロナ放電器及び除
電用コロナ放電器の各々の開口部を感光ドラムに対向近
接して順次配し、上記転写用コロナ放電器及び除電用コ
ロナ放電器の中央の遮蔽電極を所定高さに配し且つ上記
遮蔽電極の先端部を、上記除電用コロナ放電器の開口部
を、所定量塞ぐ斜面を形成して成る電子写真装置に供す
る上記転写及び剥離装置。In a transfer and peeling device used in an electrophotographic apparatus, openings of each of a transfer corona discharger and a static elimination corona discharger, which are the transfer and peeling devices, are sequentially arranged opposite to and close to the photosensitive drum, The central shielding electrode of the transfer corona discharger and static elimination corona discharger is arranged at a predetermined height, and the tip of the shield electrode forms a slope that closes the opening of the static elimination corona discharger by a predetermined amount. The transfer and peeling device described above is used in an electrophotographic device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3283486A JPS62192776A (en) | 1986-02-19 | 1986-02-19 | Transferring and peeling device for electronic photographic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3283486A JPS62192776A (en) | 1986-02-19 | 1986-02-19 | Transferring and peeling device for electronic photographic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62192776A true JPS62192776A (en) | 1987-08-24 |
Family
ID=12369848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3283486A Pending JPS62192776A (en) | 1986-02-19 | 1986-02-19 | Transferring and peeling device for electronic photographic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62192776A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5884134A (en) * | 1996-06-19 | 1999-03-16 | Ricoh Co., Ltd. | Image forming apparatus with a device to increase contact area between a transfer sheet and an image carrier |
-
1986
- 1986-02-19 JP JP3283486A patent/JPS62192776A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5884134A (en) * | 1996-06-19 | 1999-03-16 | Ricoh Co., Ltd. | Image forming apparatus with a device to increase contact area between a transfer sheet and an image carrier |
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