JPS62191870A - Separator for transfer material - Google Patents
Separator for transfer materialInfo
- Publication number
- JPS62191870A JPS62191870A JP3473586A JP3473586A JPS62191870A JP S62191870 A JPS62191870 A JP S62191870A JP 3473586 A JP3473586 A JP 3473586A JP 3473586 A JP3473586 A JP 3473586A JP S62191870 A JPS62191870 A JP S62191870A
- Authority
- JP
- Japan
- Prior art keywords
- transfer material
- conductive layer
- claw
- photosensitive body
- metal plating
- 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
- 239000000463 material Substances 0.000 title claims abstract description 20
- 210000000078 claw Anatomy 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 6
- 239000000057 synthetic resin Substances 0.000 claims abstract description 6
- 238000007747 plating Methods 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 108091008695 photoreceptors Proteins 0.000 description 7
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000002265 prevention Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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
Abstract
Description
【発明の詳細な説明】
（発明の産業上の利用分野）
本発明は電子写真複写装置や静電記録装置等のトナー像
や潜像を有する像担持体に転写バイアスの印加により静
電的に吸着した転写材を分離するための分離装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field of the Invention) The present invention is an electrophotographic copying device, an electrostatic recording device, etc., in which an image bearing member having a toner image or a latent image is electrostatically transferred by applying a transfer bias. The present invention relates to a separation device for separating adsorbed transfer material.
（従来例）
電子写真複写装置を例にとると、感光体に形成したトナ
ー像をコロナ放電器による静電界を利用し、転写材に転
写した後に、この転写材を感光体から分離する手段とし
て分離爪を用いたものがある。この様な分離爪の形状と
しては種々考案されているが、その多くが硬質の合成樹
脂により構成されている。(Conventional example) Taking an electrophotographic copying device as an example, after a toner image formed on a photoreceptor is transferred to a transfer material using an electrostatic field generated by a corona discharger, this transfer material is separated from the photoreceptor. Some use separate claws. Various shapes of such separation claws have been devised, but most of them are made of hard synthetic resin.
樹脂による分離爪は成形が容易でコストも易いが、感光
体との摺擦により数百ボルトに帯電し、感光体上の残留
トナーや転写材上の未定着トナーが吸着し、吸着しきれ
なくなったトナーが、通過する転写材上に落下して画質
を落す結果となる。Separation claws made of resin are easy to mold and are inexpensive, but when they rub against the photoreceptor, they become charged to several hundred volts, and residual toner on the photoreceptor and unfixed toner on the transfer material are adsorbed, making it impossible to adsorb them completely. The resulting toner falls onto the passing transfer material, resulting in a decrease in image quality.
一方、上記問題を解決するものとして、金属を削って形
成した分離爪があるが、加工に時間を要し製造コストか
高いという欠点がある。On the other hand, as a solution to the above-mentioned problem, there is a separation claw formed by cutting metal, but it has the disadvantage that it takes time to process and the manufacturing cost is high.
（発明か解決しようとする問題点）
本発明は上記樹脂製分１［爪のもつ欠点と、これを金属
に首き換えることによる欠点とを同時に解決した分離爪
を提供するものである。(Problems to be Solved by the Invention) The present invention provides a separation claw that simultaneously solves the drawbacks of the above-mentioned resin claw and the drawbacks caused by replacing it with a metal claw.
（問題点を解決するための構成）
本発明の分離爪は、分離爪本体を合成樹脂で構成し、そ
の表面に金属メッキによる導電層を施したことを特徴と
するもので、この導電層は１０３Ω・ｃｍ以下の電気抵
抗を有することが好ましい。(Structure for Solving Problems) The separation claw of the present invention is characterized in that the separation claw main body is made of synthetic resin, and a conductive layer formed by metal plating is applied to the surface of the separation claw. It is preferable to have an electrical resistance of 10 3 Ω·cm or less.
（実施例）
第１図は本発明を適用した電子写真複写装置の分離装置
及びその周辺の断面図を示す。(Embodiment) FIG. 1 shows a sectional view of a separating device and its surroundings in an electrophotographic copying apparatus to which the present invention is applied.
図の様に矢印方向に回転する感光ドラム１上のトナー像
は転写コロナ放電器２により転写材３上に転写され、除
電器４により除電された転写材３は感光体から分離され
、搬送ベルト５により定着器（図示せず）へ搬送される
。この分離部の感光体回転方向の下流側には公庫１爪６
が軸７に回転自在に軸支され、この分離爪６はばね８に
より付勢され、反時計方向に回転力が与えられ、その先
端は感光ドラム１に圧接されている。感光ドラム１の更
に下流側にはグレード板を利用した周知のクリーニング
器９が配設され、ドラム１上の残留トナーはここで清掃
除去される。As shown in the figure, the toner image on the photosensitive drum 1, which rotates in the direction of the arrow, is transferred onto the transfer material 3 by the transfer corona discharger 2, and the transfer material 3, which has been neutralized by the static eliminator 4, is separated from the photoreceptor and transported by the conveyor belt. 5 to a fixing device (not shown). On the downstream side of this separation part in the direction of rotation of the photoreceptor, there is a public storage claw 6.
is rotatably supported by a shaft 7, and this separation claw 6 is biased by a spring 8 to apply rotational force in the counterclockwise direction, and its tip is pressed against the photosensitive drum 1. A well-known cleaning device 9 using a grade plate is disposed further downstream of the photosensitive drum 1, and residual toner on the drum 1 is cleaned and removed here.
ところで、上記分離爪６はポリアミド樹脂等の合成樹脂
により本体部６ａが形成され、更に感光ドラム側と転写
材通過側に、クロムやスズ等の金属メッキを１０μ厚に
形成した導電層６ｂを有している。なお、この導電層６
ｂについて接地した場合としない場合について、トナー
付着防止効果を比較したところ、大きな差を発生しない
ことを確認した。即ち、感光ドラムとの接触により、接
地しなくても爪自身の帯電が防止されるものらしく、こ
のことから、分離爪が感光ドラム１に対して非接触とす
る場合には、この爪の導電層６ｂを接地したり、適当な
バイアス電圧を印加することが好ましいことが予想でき
る。By the way, the separation claw 6 has a main body 6a formed of synthetic resin such as polyamide resin, and further has a conductive layer 6b plated with metal such as chromium or tin to a thickness of 10 μm on the photosensitive drum side and the transfer material passing side. are doing. Note that this conductive layer 6
When the toner adhesion prevention effect was compared between the case of contacting the ground and the case of not contacting the ground, it was confirmed that there was no significant difference. In other words, it seems that the claw itself is prevented from being charged by contact with the photosensitive drum even if it is not grounded. Therefore, when the separation claw is not in contact with the photosensitive drum 1, the conductivity of this claw is prevented. It can be expected that it is preferable to ground the layer 6b or apply an appropriate bias voltage.
（他の実施例）
上記感光ドラムに変えて絶縁ドラムを用いたり、又はこ
れらの像担持体をベル１〜状にしたものに対しても有効
である。更に転写手段としてはバイアス電圧を印加した
ローラの場合にも有効である。分離爪の使い方としては
この様な像担持体に複数設けたり、又は接離を交互に行
なったり、更には転写材の搬送方向に対して直交する方
向に８動するものであっても良い。(Other Embodiments) It is also effective to use an insulated drum instead of the photosensitive drum, or to use a bell-shaped image carrier. Furthermore, it is also effective to use a roller to which a bias voltage is applied as the transfer means. A plurality of separation claws may be provided on such an image carrier, or they may be brought into contact with and separated from each other alternately, or they may be moved in eight directions orthogonal to the conveying direction of the transfer material.
一方、分離爪の導電層６ｂは上記付着したトナーの落下
防止効果という点では、転写材の通過側と感光ドラム側
の少なくとも一部に設けることが有効で、勿論、表面全
体をこの導電層６ｂで苫っでも良いし、必要により部分
的に形成しても良い。On the other hand, in terms of the effect of preventing the adhered toner from falling, it is effective to provide the conductive layer 6b of the separating claw on at least a portion of the transfer material passage side and the photosensitive drum side, and of course, the conductive layer 6b covers the entire surface. It is also possible to form it partially, or it may be formed partially if necessary.
（発明の効果）
分離爪に金属による導電層を形成することにより、導電
樹脂による導電層の形成を比較し、耐久性にもすぐねで
おり、また、感光体や転写材との滑り効果も高く、更に
トナー付着防止効果を安定させることができた。(Effects of the invention) By forming a conductive layer made of metal on the separation claw, compared to the formation of a conductive layer made of conductive resin, it is more durable and also has a better sliding effect with the photoreceptor and transfer material. It was also possible to stabilize the toner adhesion prevention effect.
第１図は本発明を適用した分離装置及びその周辺の断面
図を示す。
図において、１は感光ドラム、２は転写用コロナ放電器
、３は転写材、６は分離爪、６ａは樹脂等、６ｂは導電
層を示す。FIG. 1 shows a sectional view of a separation device to which the present invention is applied and its surroundings. In the figure, 1 is a photosensitive drum, 2 is a transfer corona discharger, 3 is a transfer material, 6 is a separating claw, 6a is a resin, etc., and 6b is a conductive layer.
Claims (2)
分離するために分離爪を用いた分離装置において、 分離爪本体を合成樹脂で構成し、その表面 に金属メッキによる導電層を施したことを特徴とする転
写材の分離装置。(1) In a separation device that uses a separation claw to separate the transfer material that has electrostatically adhered to the image carrier during the transfer process, the separation claw body is made of synthetic resin, and the surface thereof is made of a conductive layer made of metal plating. A transfer material separation device characterized by being subjected to.
以下の電気抵抗を有することを特徴とする特許請求の範
囲第（１）項に記載の転写材の分離装置。(2) The conductive layer formed by the above metal plating is 10^3Ω・cm
The transfer material separation device according to claim (1), characterized in that it has the following electrical resistance:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3473586A JPS62191870A (en) | 1986-02-18 | 1986-02-18 | Separator for transfer material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3473586A JPS62191870A (en) | 1986-02-18 | 1986-02-18 | Separator for transfer material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62191870A true JPS62191870A (en) | 1987-08-22 |
Family
ID=12422575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3473586A Pending JPS62191870A (en) | 1986-02-18 | 1986-02-18 | Separator for transfer material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62191870A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0974875A2 (en) * | 1998-07-21 | 2000-01-26 | Canon Kabushiki Kaisha | Image forming apparatus |
| EP2138902A3 (en) * | 2008-05-16 | 2014-04-02 | Konica Minolta Business Technologies, Inc. | Image forming apparatus |
-
1986
- 1986-02-18 JP JP3473586A patent/JPS62191870A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0974875A2 (en) * | 1998-07-21 | 2000-01-26 | Canon Kabushiki Kaisha | Image forming apparatus |
| EP0974875A3 (en) * | 1998-07-21 | 2001-05-02 | Canon Kabushiki Kaisha | Image forming apparatus |
| EP2138902A3 (en) * | 2008-05-16 | 2014-04-02 | Konica Minolta Business Technologies, Inc. | Image forming apparatus |
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