JPS5830775A - Transfer material separating device - Google Patents
Transfer material separating deviceInfo
- Publication number
- JPS5830775A JPS5830775A JP12854981A JP12854981A JPS5830775A JP S5830775 A JPS5830775 A JP S5830775A JP 12854981 A JP12854981 A JP 12854981A JP 12854981 A JP12854981 A JP 12854981A JP S5830775 A JPS5830775 A JP S5830775A
- Authority
- JP
- Japan
- Prior art keywords
- transfer material
- insulating member
- width
- charger
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/65—Apparatus which relate to the handling of copy material
- G03G15/6532—Removing a copy sheet form a xerographic drum, band or plate
- G03G15/6535—Removing a copy sheet form a xerographic drum, band or plate using electrostatic means, e.g. a separating corona
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
【発明の詳細な説明】
本発明１末静電転写式電子写真複写機の転写材分離装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer material separation device for an electrostatic transfer type electrophotographic copying machine.
像担持体上の現像トナー像を転写材（紙）の背面よシコ
ロナ帯電させて転写材上に転写する場合、転写材が像担
持体に静電吸着する。転写材を像担持体（感光体）よシ
分離する方法としては交流コロナにより転写材を除電し
て、転写材の剛性により分離する方法が広く用いられて
いる。本発明は。When a developed toner image on an image carrier is transferred onto the transfer material by charging the back side of the transfer material (paper) with a circular charge, the transfer material is electrostatically attracted to the image carrier. A widely used method for separating a transfer material from an image carrier (photoreceptor) is to remove static electricity from the transfer material using an alternating current corona and to separate the transfer material based on its rigidity. The present invention is.
そのような交流分離帯電器の交流コロナの電界強度を制
御できるようにした転写材分離装置を提供するものであ
る。The present invention provides a transfer material separation device that can control the electric field strength of the AC corona of such an AC separation charger.
第１図に像担持体（感光体）からのトナー像の転写およ
び転写材の分離を行なわす従来の装置の概略断面図を示
す。同図において、１は像担持体（感光体）、２は転写
材、３は分離帯電器、６は転写帯電器、４と６はコロナ
放電ワイヤー、７は転写材ガイド、９と９′はトナー像
である。転写帯電器６により）ナー像９は転写材２に転
写され、３ 、・
分離帯電器３によシ転写材２は分離されて転写材ガイド
７に導かれる。ここで分離帯電器３の電界強度は、転写
帯電器６により帯電でれた転写材上の電荷を完全に除電
して静電吸着力が無くなる様に調整する。従来は交流電
圧電源の電圧を調整したシ、像担持体１に対する帯電器
の高さく離間距離）を変えていたが、しかし高圧電源を
分離、転写を共通としたり、帯電器を転写分離一体のも
のとすると調整方法が難しくなってくる。FIG. 1 is a schematic sectional view of a conventional apparatus for transferring a toner image from an image carrier (photoreceptor) and separating a transfer material. In the figure, 1 is an image carrier (photoreceptor), 2 is a transfer material, 3 is a separation charger, 6 is a transfer charger, 4 and 6 are corona discharge wires, 7 is a transfer material guide, 9 and 9' are This is a toner image. The toner image 9 is transferred to the transfer material 2 by the transfer charger 6, and the transfer material 2 is separated by the separation charger 3 and guided to the transfer material guide 7. Here, the electric field strength of the separation charger 3 is adjusted so that the charge on the transfer material charged by the transfer charger 6 is completely removed and the electrostatic adsorption force is eliminated. Conventionally, the voltage of the AC voltage power source was adjusted, and the height and distance of the charger relative to the image carrier 1 were changed. If so, the adjustment method becomes difficult.
本発明は２以上の点に鑑み、分離帯電器の電界強度を独
立に容易に調整できるようにしたものである。In view of two or more points, the present invention enables the electric field strength of the separation charger to be easily adjusted independently.
第２図に発明の実施例の概略断面図を示す。同図におい
て、第１図と異なる点は、分離帯電器３の長手方向開口
端部に沿って絶縁部材８を設け、これで転写材２の除電
の電界を制御するようにしたことである。ここで、絶縁
部材８は転写材進行方向の幅を変えたシ、または、その
方向に移動可能にして、分離帯電器３の開口幅を可変に
する事により、交流コロナの電界強度の値の調整と、長
手方向の分離帯電器３の傾きを補正可能にしている０
第３図は本発明の他の実施例を示し、これは絶縁部材８
′の転写材進行方向の幅を、両端部の鶴が中央部の幅よ
シ小さくなるようにしたものである。FIG. 2 shows a schematic sectional view of an embodiment of the invention. The difference from FIG. 1 in this figure is that an insulating member 8 is provided along the longitudinal opening end of the separation charger 3, and the electric field for static elimination of the transfer material 2 is controlled by this. Here, the insulating member 8 can be changed in width in the transfer material advancing direction, or made movable in that direction, and the opening width of the separation charger 3 can be made variable, thereby changing the value of the electric field strength of the AC corona. FIG. 3 shows another embodiment of the invention, in which the insulating member 8
The width of the transfer material in the traveling direction of the transfer material is made such that the cranes at both ends are smaller than the width at the center.
これにより、転写材が進行方向に直角と々る両端部より
分Ｉｍを開始する様に１除電電界強度を調整することが
できる。With this, it is possible to adjust the electric field strength for 1 static elimination so that the transfer material begins to move from both ends perpendicular to the direction of travel.
第４図（ａ） 、 （ｂ）は本発明の更に別の実施例の
要部断面図と上面図を示し、これら第２図または第３図
に例示したと同様の絶縁部材８″の一部すなわち転写材
進行方向の排出側に、分離され念転写材２の像担持体１
と接しない面を受けて、転写材２の移動を案内するガイ
ド部７ａ、７ｂ、７ｃ、７ｄを設けたものである。なお
、本実施例ではガイド部を４つ設けているが、これは分
離され）転写材２の幅に応じた数だけ設けることができ
る。FIGS. 4(a) and 4(b) show a sectional view and a top view of a main part of still another embodiment of the present invention, in which an insulating member 8'' similar to that illustrated in FIG. 2 or 3 is shown. In other words, on the ejection side in the transfer material advancing direction, the image carrier 1 of the psychotransfer material 2 is separated.
Guide portions 7a, 7b, 7c, and 7d for guiding the movement of the transfer material 2 are provided to receive the surface not in contact with the transfer material 2. Although four guide portions are provided in this embodiment, the guide portions can be separated and provided in a number corresponding to the width of the transfer material 2.
以上の様に本発明によれば、分離帯電器による除電電界
強度を簡単な構造で容易に調整する事ができるもので、
転写材を像担持体から確実に分離６ ベーン
させるうえで、すぐれた効果を発揮するものである。As described above, according to the present invention, it is possible to easily adjust the static elimination electric field strength by the separation charger with a simple structure.
It exhibits an excellent effect in reliably separating the transfer material from the image carrier.
第１図は従来の転写材分離装置の一例を示す概略断面図
、第２図は本発明の一実施例を示す概略断面図、第３図
は本発明の他の実施例の斜視図、第４図（ａ） 、 （
ｂ）は本発明の更に別の実施例の要部断面図と上面図で
ある。
１・・・・・・像担持体、２・・・・・・転写材、３・
・・・・・分離帯電器、８ 、８’、 ８’・・・・・
・絶縁部材、７ａ〜７ｄ・・・・・・ガイド部。 −
代理人の氏名 弁理士 中 尾 敏 男 ほか１基筒
１５Ａ
第２図
！FIG. 1 is a schematic sectional view showing an example of a conventional transfer material separation device, FIG. 2 is a schematic sectional view showing an embodiment of the present invention, and FIG. 3 is a perspective view of another embodiment of the present invention. Figure 4 (a), (
b) is a sectional view and a top view of main parts of still another embodiment of the present invention. 1... Image carrier, 2... Transfer material, 3.
...Separation charger, 8, 8', 8'...
- Insulating member, 7a to 7d...Guide part. − Name of agent: Patent attorney Toshio Nakao and 1 other person
15A Figure 2!
Claims (1)
写材上へコロナ転写した後、転写材上へ交流コロナによ
る除電を行なって転写材を像担持体から分離する分離帯
電器を具備し、かつ前記分離帯電器の転写材進入側の長
手方向開口端部に沿って絶縁部材を設け、その絶縁部材
によシ、前記分離帯電器の開口幅を可変するようにした
事を特徴とする転写材分離装置。 （２、特許請求の範囲第（１）項の記載において、前記
絶縁部材の転写材進行方向の幅は、長手方向両端部の幅
が中央部の幅よシ小さい事を特徴とする転写材分離装置
。 （３）特許請求の範囲第（１）項または第（′；４項の
記載において、前記絶縁部材は、転写材進行方向の排出
側に、分離された転写材の像担持体と接しない面を受け
て、転写材の移動を案内するガイド部を有２ ベー＝〕
゛ する事を特徴とする転写材分離装置。[Scope of Claims] (1) After the developed toner image on the image carrier is corona-transferred onto the transfer material by a transfer charger, the charge on the transfer material is removed by AC corona, and the transfer material is transferred to the image carrier. A separation charger is provided to separate the separation charger from the transfer material, and an insulating member is provided along the longitudinal opening end on the transfer material entrance side of the separation charger, and the opening width of the separation charger is variable by the insulating member. A transfer material separation device characterized by: (2. In the description of claim (1), the width of the insulating member in the direction in which the transfer material advances is such that the width at both end portions in the longitudinal direction is smaller than the width at the center portion. (3) In the statement of claim (1) or (';4), the insulating member is in contact with the image carrier of the separated transfer material on the discharge side in the transfer material advancing direction. There is a guide part that guides the movement of the transfer material by receiving the surface that does not move.
A transfer material separation device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12854981A JPS5830775A (en) | 1981-08-17 | 1981-08-17 | Transfer material separating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12854981A JPS5830775A (en) | 1981-08-17 | 1981-08-17 | Transfer material separating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5830775A true JPS5830775A (en) | 1983-02-23 |
Family
ID=14987499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12854981A Pending JPS5830775A (en) | 1981-08-17 | 1981-08-17 | Transfer material separating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5830775A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61145573A (en) * | 1984-12-13 | 1986-07-03 | ゼロツクス コーポレーシヨン | Copying equipment |
| US5636011A (en) * | 1993-03-03 | 1997-06-03 | Fujitsu Limited | Static electricity removal method and apparatus for image carrier |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212542B2 (en) * | 1973-11-15 | 1977-04-07 | ||
| JPS5373139A (en) * | 1976-12-13 | 1978-06-29 | Ricoh Co Ltd | Transfer device |
| JPS53143334A (en) * | 1977-05-20 | 1978-12-13 | Ricoh Co Ltd | Corona electrifier for transfer |
| JPS5461539A (en) * | 1977-10-26 | 1979-05-17 | Toshiba Corp | Separator for electronic copying machine |
| JPS5768863A (en) * | 1980-10-17 | 1982-04-27 | Canon Inc | Corona transfer device |
| JPS5768880A (en) * | 1980-10-17 | 1982-04-27 | Canon Inc | Corona transfer device |
-
1981
- 1981-08-17 JP JP12854981A patent/JPS5830775A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212542B2 (en) * | 1973-11-15 | 1977-04-07 | ||
| JPS5373139A (en) * | 1976-12-13 | 1978-06-29 | Ricoh Co Ltd | Transfer device |
| JPS53143334A (en) * | 1977-05-20 | 1978-12-13 | Ricoh Co Ltd | Corona electrifier for transfer |
| JPS5461539A (en) * | 1977-10-26 | 1979-05-17 | Toshiba Corp | Separator for electronic copying machine |
| JPS5768863A (en) * | 1980-10-17 | 1982-04-27 | Canon Inc | Corona transfer device |
| JPS5768880A (en) * | 1980-10-17 | 1982-04-27 | Canon Inc | Corona transfer device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61145573A (en) * | 1984-12-13 | 1986-07-03 | ゼロツクス コーポレーシヨン | Copying equipment |
| US5636011A (en) * | 1993-03-03 | 1997-06-03 | Fujitsu Limited | Static electricity removal method and apparatus for image carrier |
| 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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