JPH05224501A - Conductive roll - Google Patents

Conductive roll

Info

Publication number
JPH05224501A
JPH05224501A JP5741192A JP5741192A JPH05224501A JP H05224501 A JPH05224501 A JP H05224501A JP 5741192 A JP5741192 A JP 5741192A JP 5741192 A JP5741192 A JP 5741192A JP H05224501 A JPH05224501 A JP H05224501A
Authority
JP
Japan
Prior art keywords
rubber
conductive
photosensitive drum
polyisoprene
layer
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.)
Granted
Application number
JP5741192A
Other languages
Japanese (ja)
Other versions
JP3120540B2 (en
Inventor
Tadashi Utsunomiya
忠 宇都宮
Minoru Toyoda
稔 豊田
Minoru Satoyoshi
実 里吉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
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 by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP5741192A priority Critical patent/JP3120540B2/en
Publication of JPH05224501A publication Critical patent/JPH05224501A/en
Application granted granted Critical
Publication of JP3120540B2 publication Critical patent/JP3120540B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Abstract

PURPOSE:To form a rubber layer having decreased compression permanent set and to enhance the adhesive strength to a photosensitive drum, by compounding polyisoprene rubber with a conductive rubber compsn. CONSTITUTION:The conductive rubber layer 2 (outer layer) 2 is provided on the outer periphery of a good conductive shaft 1 made of metal (for example, stainless steel, plated iron, brass or conductive plastic, etc.). While the conductive roll comes into contact with the photosensitive drum or recording medium of an electrophotographic device, the roll imparts the potential of prescribed polarities thereto. The rubber layer (outer layer) 2 is formed of the conductive rubber compsn. contg. the polyisoprene rubber. The polyisoprene rubber includes natural rubber, synthetic solid polyisoprene rubber, synthetic liquid polyisoprene rubber, etc. Solid butadiene may be used in addition to the polyisoprene rubber in the rubber compsn. forming the rubber layer 2 and the rubber and the liquid polyisoprene rubber may be combined.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、電子写真記録装置に用
いる現像用、帯電用、除電用、転写用の導電性ロールに
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive roll for development, charging, charge removal and transfer used in an electrophotographic recording device.

【0002】[0002]

【従来の技術及び発明が解決しようとする課題】複写機
及びレーザービームプリンタ等に広く利用されている電
子写真記録装置は、一般にドラム状の感光体(以下、感
光ドラムと称す)を備えており、その感光ドラムに対し
て帯電、露光を行って静電潜像を形成し、その後感光ド
ラム上の潜像に応じてトナーを付着させて現像し、次に
その感光ドラム上のトナーを記録用紙等の記録媒体に転
移させて転写し、その後その感光ドラムを所定の電位に
除電すると共に感光ドラム上に残留するトナーを清掃
し、次の記録に備えるようになっている。また、転写に
よって記録媒体に担持されたトナーは溶融、圧着される
ことにより記録媒体に定着し、これにより一連の記録作
業が完了する。
2. Description of the Related Art An electrophotographic recording apparatus widely used in a copying machine, a laser beam printer, etc. is generally provided with a drum-shaped photosensitive member (hereinafter referred to as a photosensitive drum). The photosensitive drum is charged and exposed to form an electrostatic latent image, and then toner is attached and developed according to the latent image on the photosensitive drum. Then, the photosensitive drum is transferred to another recording medium and then transferred, and then the photosensitive drum is discharged to a predetermined potential and the toner remaining on the photosensitive drum is cleaned to prepare for the next recording. Further, the toner carried on the recording medium by the transfer is melted and pressure-bonded to be fixed on the recording medium, thereby completing a series of recording operations.

【0003】この電子写真記録装置の感光ドラムに対し
てその帯電領域に所定電位を付与する帯電手段、転写領
域に搬送されてきた記録媒体に対して所定電位を付与す
る転写手段、あるいは転写後の感光ドラムにおいてその
帯電領域を一定電位に均一化させる除電手段として、従
来、細径のワイヤに数百〜数千ボルトの高電圧を印加し
てコロナ放電を起こすように構成したコロナ帯電方式の
ものが一般的に広く使用されている。
Charging means for applying a predetermined potential to the charging area of the photosensitive drum of this electrophotographic recording apparatus, transfer means for applying a predetermined potential to the recording medium conveyed to the transfer area, or after transfer. As a static eliminating means for uniformizing the charged area of the photosensitive drum to a constant potential, conventionally, a corona charging type configured to generate a corona discharge by applying a high voltage of several hundred to several thousand volts to a thin wire. Is generally widely used.

【0004】しかしながら、このようなコロナ帯電方式
を用いたものにあっては、コロナ放電に伴って発生する
オゾン等の活性分子が感光ドラムやその他の部品を劣化
させたり人体にも悪影響を及ぼしたりするおそれがあ
り、また、高電圧による感電事故等の危険、ワイヤの汚
損や断線に対する保守管理の面でも問題点がある。
However, in the case of using such a corona charging system, active molecules such as ozone generated by corona discharge deteriorate the photosensitive drum and other parts, or have an adverse effect on the human body. In addition, there is a risk of electric shock due to high voltage, and there is a problem in terms of maintenance management for wire contamination and wire breakage.

【0005】そこで、このようなコロナ帯電方式とは異
なり、導電性ゴムローラを感光ドラムに直接接触させて
所定電位を印加するように構成したローラ型の接触帯電
器(以下、導電性ロールと称す)が提案されている。こ
の導電性ロールは高分子量のニトリルブタジエンゴム、
クロロプレンゴム、スチレンブタジエンゴム等で形成さ
れており、コロナ帯電方式のものほど高電圧を必要とせ
ず、オゾン等の活性分子もほとんど発生しないなどの優
れた特徴を有するものである。
Therefore, unlike such a corona charging system, a roller type contact charger (hereinafter referred to as a conductive roll) is configured so that a conductive rubber roller is brought into direct contact with a photosensitive drum to apply a predetermined potential. Is proposed. This conductive roll is made of high molecular weight nitrile butadiene rubber,
It is made of chloroprene rubber, styrene-butadiene rubber, etc., and has excellent characteristics such as requiring no high voltage and hardly generating active molecules such as ozone, unlike those of the corona charging type.

【0006】しかし、導電性ロールにあっては感光ドラ
ムに対して均一な電位を付与し、かつ感光ドラムへのト
ナー融着を改良するため、ゴム硬度を下げて密着性を極
力高めることが重要な課題となっている。ところが、従
来の導電性ロールのゴム硬度はアスカーC66程度であ
り、この硬度を下げるため上記ゴム類に低分子量の液状
化合物、例えばオイル等の軟化剤を混入しているが、オ
イル等の軟化剤を配合した場合には、その軟化剤が導電
性ロール表面に浸出し、感光ドラムを汚染するおそれが
ある。
However, in the case of a conductive roll, it is important to lower the rubber hardness and enhance the adhesion as much as possible in order to apply a uniform potential to the photosensitive drum and to improve the toner fusion to the photosensitive drum. Has become a problem. However, the conventional conductive roll has a rubber hardness of about Asker C66, and in order to reduce this hardness, a low molecular weight liquid compound, for example, a softening agent such as oil is mixed in the above rubbers. When blended with, the softening agent may leach out onto the surface of the conductive roll and contaminate the photosensitive drum.

【0007】本発明は上記事情に鑑みなされたもので、
感光ドラムへの密着性が高く、かつその感光ドラムへの
汚染を極力抑えることができる導電性ロールを提供する
ことを目的とする。
The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide a conductive roll that has high adhesion to a photosensitive drum and can suppress contamination of the photosensitive drum as much as possible.

【0008】[0008]

【課題を解決するための手段及び作用】本発明者は上記
目的を達成するため鋭意検討を行った結果、電子写真記
録装置において用いる導電性ロールのゴム層を形成する
導電性ゴム組成物、特に固形ブタジエンゴムにカーボン
ブラック等の導電性粉末を配合してなる導電性ゴム組成
物に対し、ポリイソプレン系ゴムを配合することによ
り、硬度が低く、圧縮永久歪が少ないゴム層を形成する
ことができ、感光ドラムに対する密着性を高めることが
できると共に、ゴム層の上に被膜をかぶせればポリイソ
プレン系ゴムが導電性ロールのゴム層から膜を通して浸
出することもなく、これによって感光ドラムを汚染する
おそれがない上、ポリイソプレン系ゴムの配合により作
業性、加硫特性が阻害されることがなく、かえって良好
な作業性、加硫特性を与えることを見い出し、本発明を
なすに至った。
MEANS TO SOLVE THE PROBLEMS As a result of intensive studies to achieve the above-mentioned object, the present inventor has found that a conductive rubber composition for forming a rubber layer of a conductive roll used in an electrophotographic recording apparatus, particularly a conductive rubber composition. By blending a polyisoprene-based rubber with a conductive rubber composition obtained by blending solid butadiene rubber with a conductive powder such as carbon black, a rubber layer having low hardness and low compression set can be formed. It is possible to improve the adhesion to the photosensitive drum, and by covering the rubber layer with a coating, the polyisoprene-based rubber does not seep out from the rubber layer of the conductive roll through the film, thereby contaminating the photosensitive drum. In addition, there is no fear that the workability and vulcanization characteristics will not be hindered by the compounding of polyisoprene rubber, and the workability and vulcanization characteristics will be better. Found to give, the present invention has been accomplished.

【0009】従って、本発明は、良導性のシャフトと、
その外周に設けられた導電性のゴム層とを有し、電子写
真記録装置の感光体又は記録媒体に接触しながらこれに
所定極性の電位を付与する導電性ロールにおいて、前記
ゴム層がポリイソプレン系のゴムを含む組成物により形
成されていることを特徴とする導電性ロールを提供す
る。
Therefore, the present invention provides a shaft having good conductivity,
In a conductive roll having a conductive rubber layer provided on the outer periphery thereof and applying a potential of a predetermined polarity to the photoreceptor or recording medium of an electrophotographic recording device, the rubber layer is polyisoprene. Provided is a conductive roll formed of a composition containing a rubber of the series.

【0010】以下、本発明に付き更に詳しく説明する
と、本発明の導電性ロールは、図1に示すように、金属
製(例えばステンレス,メッキした鉄,黄銅或いは導電
性プラスチック等)の良導性シャフト1の外周に導電性
のゴム層(外層)2を設けてなるもので、電子写真記録
装置の感光ドラム又は記録媒体に接触しながらこれらに
所定極性の電位を付与するものである。
The conductive roll of the present invention will be described in more detail below with reference to FIG. 1. The conductive roll of the present invention is made of metal (for example, stainless steel, plated iron, brass or conductive plastic) and has good conductivity. A conductive rubber layer (outer layer) 2 is provided on the outer periphery of the shaft 1, and a potential of a predetermined polarity is applied to the photosensitive drum of an electrophotographic recording device or a recording medium while being in contact therewith.

【0011】ここで、本発明においては、上記ゴム層
(外層)2をポリイソプレン系ゴムを含む導電性ゴム組
成物により形成する。
Here, in the present invention, the rubber layer (outer layer) 2 is formed of a conductive rubber composition containing a polyisoprene rubber.

【0012】この場合、ポリイソプレン系ゴムとして
は、天然ゴム、合成の固形ポリイソプレンゴム、合成の
液状ポリイソプレンゴムなどが挙げられるが、特に合成
の液状ポリイソプレンゴムが好ましい。また、合成の液
状ポリイソプレン系ゴムは、38℃における溶融粘度
(B型粘度計,東京計器(株)製)が500〜7,00
0cps、平均分子量(Mv)が20,000〜60,
000程度であることが好ましい。
In this case, examples of the polyisoprene rubber include natural rubber, synthetic solid polyisoprene rubber, synthetic liquid polyisoprene rubber and the like, and synthetic liquid polyisoprene rubber is particularly preferable. Further, the synthetic liquid polyisoprene rubber has a melt viscosity at 38 ° C. (B type viscometer, manufactured by Tokyo Keiki Co., Ltd.) of 500 to 7,000.
0 cps, average molecular weight (Mv) 20,000-60,
It is preferably about 000.

【0013】また、ゴム層2を形成するゴム組成物にお
いて、ゴム成分としてはポリイソプレン系ゴムの他に種
々のゴム成分を使用することができ、具体的にはブタジ
エンゴム、スチレンブタジエンゴム(SBR)、ニトリ
ルブタジエンゴム(NBR)等のブタジエン系ゴムなど
が挙げられるが、特に固形ブタジエンゴムを用い、これ
と液状ポリイソプレンゴムとを組み合わせることが好ま
しく、これにより感光ドラムへの密着性がより高く、感
光ドラムを汚染するおそれもない上、(1)ゴム硬度が
アスカーC61以下の軟らかいゴムを作り易い、(2)
液状ポリイソプレンゴム(LIR)を多量にブレンドし
てもバンバリーやロールへの付着が少ない、(3)加硫
時のモールド離れがよい、(4)加硫が速い、(5)加
硫時の圧縮永久歪が少ない、等の優れた特性を付与する
ことができる。
Further, in the rubber composition forming the rubber layer 2, various rubber components other than polyisoprene rubber can be used as the rubber component. Specifically, butadiene rubber and styrene butadiene rubber (SBR) can be used. ), Butadiene-based rubber such as nitrile butadiene rubber (NBR), etc., but it is particularly preferable to use solid butadiene rubber and combine this with liquid polyisoprene rubber, which results in higher adhesion to the photosensitive drum. There is no risk of contaminating the photosensitive drum, and (1) it is easy to make a soft rubber having a rubber hardness of Asker C61 or less, (2)
Even if a large amount of liquid polyisoprene rubber (LIR) is blended, there is little adhesion to Banbury or roll, (3) Good mold release during vulcanization, (4) Fast vulcanization, (5) During vulcanization It is possible to impart excellent properties such as low compression set.

【0014】なお、このような効果をより有効に発揮す
るため、固形ブタジエンゴムとしては、特に限定される
ものではないが、シス1,4構造を90%以上含有する
ものを用いることが好ましい。
In order to more effectively exert such effects, the solid butadiene rubber is not particularly limited, but it is preferable to use one containing 90% or more of cis 1,4 structure.

【0015】また、ポリイソプレン系とブタジエンゴム
等の他のゴムとの配合割合は、重量比として10/90
〜50/50、特に20/80〜40/60であること
が好ましい。ポリイソプレン系ゴムの割合が少な過ぎる
と、加硫ゴムの硬度が高くなり過ぎる場合があり、多過
ぎると練りゴムの粘着が強過ぎて加工できなくなる場合
がある。
Further, the compounding ratio of the polyisoprene type and other rubber such as butadiene rubber is 10/90 as a weight ratio.
It is preferably from 50/50, particularly from 20/80 to 40/60. If the proportion of the polyisoprene rubber is too low, the hardness of the vulcanized rubber may be too high, and if it is too high, the adhesion of the kneaded rubber may be too strong and processing may be impossible.

【0016】上記導電性ゴム組成物には、導電性を付与
する目的でカーボンブラック、黒鉛、金属、導電性の各
種金属酸化物(酸化錫,酸化チタン等)等の導電性粉末
や、カーボンファイバー、金属酸化物の短繊維等の各種
導電性繊維が配合される。導電性粉末や導電性繊維の配
合量は、全ゴム100重量部に対し20〜100重量部
とすることができ、これによりゴム層の抵抗値を103
〜103ρ・cmに形成することができる。
The above-mentioned conductive rubber composition contains conductive powder such as carbon black, graphite, metal, conductive metal oxides (tin oxide, titanium oxide, etc.) or carbon fiber for the purpose of imparting conductivity. Various conductive fibers such as metal oxide short fibers are mixed. The compounding amount of the conductive powder or the conductive fiber can be set to 20 to 100 parts by weight with respect to 100 parts by weight of the total rubber, whereby the resistance value of the rubber layer is 10 3
It can be formed to -10 3 ρ · cm.

【0017】なお、ゴム層2を形成するゴム組成物に
は、更に充填剤、加硫剤、加硫促進剤、可塑剤、分散
剤、加工助剤等の通常の添加剤を配合することができ、
通常の条件で加硫することができ、通常1〜10mm厚
さのゴム層2を形成することができる。
The rubber composition forming the rubber layer 2 may be further blended with usual additives such as a filler, a vulcanizing agent, a vulcanization accelerator, a plasticizer, a dispersant and a processing aid. You can
It can be vulcanized under normal conditions, and the rubber layer 2 having a thickness of usually 1 to 10 mm can be formed.

【0018】本発明の導電性ロールは、感光ドラムへの
トナーの融着を改良するため感光ドラムへ均一な電位を
付与するため、上記ゴム組成物の加硫後、ゴム層2の表
面を砥石等を用いて樽状に研磨することが好ましい。こ
の研磨によって、ゴム層2中央部の外径が端部の外径に
比べて大きくなり、感光ドラムにロールを密着させる際
に両端に加重が加えられたときでも中央部に浮きが発生
しない。
In order to improve the fusion of the toner to the photosensitive drum, the conductive roll of the present invention imparts a uniform electric potential to the photosensitive drum. Therefore, after the rubber composition is vulcanized, the surface of the rubber layer 2 is ground with a grindstone. It is preferable to polish into a barrel shape by using such as. By this polishing, the outer diameter of the central portion of the rubber layer 2 becomes larger than the outer diameter of the end portions thereof, and even if a load is applied to both ends when the roll is brought into close contact with the photosensitive drum, no floating occurs in the central portion.

【0019】また、感光ドラムへの密着性を改良するた
めに更にゴム層2を軟らかくする場合は、150〜25
0℃、好ましくは180〜210℃の温度で30分〜3
時間、好ましくは30分〜2時間熱処理することが好ま
しい。かかる熱処理は、上記研磨を行う場合は、研磨処
理後に行うことが好ましい。
When the rubber layer 2 is further softened to improve the adhesion to the photosensitive drum, 150 to 25
30 minutes to 3 at a temperature of 0 ° C., preferably 180 to 210 ° C.
It is preferable to perform heat treatment for a time, preferably 30 minutes to 2 hours. When the above-mentioned polishing is performed, such heat treatment is preferably performed after the polishing treatment.

【0020】なお、本発明の導電性ロールは、図1に示
すように、ゴム層2上に更に被覆膜3を5〜500μm
厚さに形成することができる。この場合、被覆膜3は、
必要な抵抗値になるように導電性粉末を分散して抵抗を
調節するが、被覆膜として、エピクロルヒドリン、アク
リルゴム、シリコンゴム、クロルスルホン化ポリエチレ
ン、フルオロオレフィンビニルエーテル共重合体、一液
性或いは二液性のポリウレタン、N−メトキシメチルナ
イロン、ナイロンとポリエーテルとの共重合体、ポリエ
ステル系エラストマー等の各種ナイロン等、様々なもの
が使用でき、抵抗合わせは酸化チタンの分散によって行
うことができる。なお、分散方法は、シェーカーにより
分散され、100℃以上150℃以下であって、3時間
以内の条件で乾燥させることによって行うことができ、
このような分散方法及び乾燥時間とすれば、ロール表面
の摩擦抵抗を高くすることができ、融着改良に効果的で
ある。この場合、被覆膜3の抵抗値は106〜1010ρ
・cmとすることができる。また、この被覆膜は複数の
層を積層したものでもかまわない。更に抵抗合わせも酸
化チタンに限定されるものではなく、カーボン,導電性
酸化錫等、一般に使用されている種々の導電性材料を使
用することができる。
In the conductive roll of the present invention, as shown in FIG. 1, a coating film 3 is further coated on the rubber layer 2 in an amount of 5 to 500 μm.
It can be formed to a thickness. In this case, the coating film 3 is
The resistance is adjusted by dispersing conductive powder so that the required resistance value is obtained, and as a coating film, epichlorohydrin, acrylic rubber, silicone rubber, chlorosulfonated polyethylene, fluoroolefin vinyl ether copolymer, one-component or Various materials such as two-component polyurethane, N-methoxymethyl nylon, copolymers of nylon and polyether, and various nylons such as polyester elastomer can be used. Resistance matching can be performed by dispersing titanium oxide. .. The dispersion method can be carried out by dispersing with a shaker and drying at 100 ° C. or higher and 150 ° C. or lower for 3 hours or less,
With such a dispersion method and drying time, the frictional resistance of the roll surface can be increased, and it is effective in improving fusion. In this case, the resistance value of the coating film 3 is 10 6 to 10 10 ρ
・ Can be cm. Further, this coating film may be a laminate of a plurality of layers. Furthermore, resistance matching is not limited to titanium oxide, and various commonly used conductive materials such as carbon and conductive tin oxide can be used.

【0021】[0021]

【実施例】以下、実施例を示し、本発明を具体的に説明
するが、本発明は下記の実施例に制限されるものではな
い。
EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to the following examples.

【0022】[実施例]スチール性シャフトに下記に示
す処方の導電性ゴム組成物を用いて導電性ゴム層を3m
m厚に形成した。
[Example] A conductive rubber layer having a thickness of 3 m was formed on a steel shaft by using a conductive rubber composition having the following formulation.
It was formed to a thickness of m.

【0023】導電性ゴム組成物処方 シス−1,4−ポリブタジエン 60 重量部 (日本合成ゴム(株)製BR02LL) 液状ポリイソプレン 40 重量部 (クラレ(株)製クラレイソプレンLIR30) ケッチェンブラックEC 10 重量部 亜鉛華 10 重量部 硫黄 0.8重量部 促進剤 0.7重量部 Conductive rubber composition formulation cis-1,4-polybutadiene 60 parts by weight (BR02LL manufactured by Nippon Synthetic Rubber Co., Ltd.) 40 parts by weight liquid polyisoprene (Kuraray Isoprene LIR30 manufactured by Kuraray Co., Ltd.) Ketjen Black EC 10 Parts by weight zinc white 10 parts by weight sulfur 0.8 parts by weight accelerator 0.7 parts by weight

【0024】なお、加硫条件は160℃×5分とし、加
硫後、導電性ゴム層の表面を砥石で研磨し、中央部の外
径を端部に比べて大きくし、次いで190℃で1時間熱
処理を行った。
The vulcanization conditions were 160 ° C. × 5 minutes, after vulcanization, the surface of the conductive rubber layer was ground with a grindstone to make the outer diameter of the central portion larger than that of the end portions, and then at 190 ° C. Heat treatment was performed for 1 hour.

【0025】得られた導電性ゴム層の硬度はアスカ−C
54°であり、この実施例の導電性ロールは、感光体へ
の密着製が優れ、また25℃で1年間保存した場合でも
イソプレンゴムの表面浸出もないものであった。
The hardness of the obtained conductive rubber layer is Asca-C.
It was 54 °, and the conductive roll of this example had excellent adhesion to the photoreceptor, and did not leach the surface of isoprene rubber even when stored at 25 ° C. for 1 year.

【0026】[0026]

【発明の効果】本発明によれば、感光ドラムへの密着性
が高く、ポリイソプレン系ゴムが浸出することもなく、
従って感光ドラムを汚染することもなく、電子写真記録
装置の現像用、帯電用、除電用、転写用として好適な導
電性ロールを得ることができる。
According to the present invention, the adhesion to the photosensitive drum is high, and the polyisoprene rubber is not leached out.
Therefore, it is possible to obtain a conductive roll suitable for development, charging, charge elimination, and transfer of an electrophotographic recording device without contaminating the photosensitive drum.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を示す導電性ロールの断面図
である。
FIG. 1 is a cross-sectional view of a conductive roll showing an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 シャフト 2 導電性ゴム層 1 shaft 2 conductive rubber layer

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 良導性のシャフトと、その外周に設けら
れた導電性のゴム層とを有し、電子写真記録装置の感光
体又は記録媒体に接触しながらこれらに所定極性の電位
を付与する導電性ロールにおいて、前記ゴム層がポリイ
ソプレン系のゴムを含む組成物により形成されているこ
とを特徴とする導電性ロール。
1. A shaft having good conductivity and a conductive rubber layer provided on the outer periphery of the shaft, and a potential of a predetermined polarity is applied to these while contacting a photoreceptor or recording medium of an electrophotographic recording apparatus. The conductive roll, wherein the rubber layer is formed of a composition containing a polyisoprene rubber.
JP5741192A 1992-02-10 1992-02-10 Conductive roll Expired - Fee Related JP3120540B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5741192A JP3120540B2 (en) 1992-02-10 1992-02-10 Conductive roll

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5741192A JP3120540B2 (en) 1992-02-10 1992-02-10 Conductive roll

Publications (2)

Publication Number Publication Date
JPH05224501A true JPH05224501A (en) 1993-09-03
JP3120540B2 JP3120540B2 (en) 2000-12-25

Family

ID=13054908

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5741192A Expired - Fee Related JP3120540B2 (en) 1992-02-10 1992-02-10 Conductive roll

Country Status (1)

Country Link
JP (1) JP3120540B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6043308A (en) * 1995-07-11 2000-03-28 Nippon Zeon Co., Ltd. Conductive rubber composition and process for the production thereof
EP1178365A2 (en) * 2000-08-03 2002-02-06 Tokai Rubber Industries, Ltd. Roller for office automation equipment
DE102008050932A1 (en) 2008-10-10 2010-04-15 Carl Freudenberg Kg Conductive liquid elastomer, useful e.g. in injection molding process and for printing on non-woven fabrics, comprises rubber having e.g. peroxidic crosslinkable functional groups, crosslinker, hydrosilylation catalyst, filler and coagent

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6043308A (en) * 1995-07-11 2000-03-28 Nippon Zeon Co., Ltd. Conductive rubber composition and process for the production thereof
EP1178365A2 (en) * 2000-08-03 2002-02-06 Tokai Rubber Industries, Ltd. Roller for office automation equipment
EP1178365A3 (en) * 2000-08-03 2004-09-15 Tokai Rubber Industries, Ltd. Roller for office automation equipment
DE102008050932A1 (en) 2008-10-10 2010-04-15 Carl Freudenberg Kg Conductive liquid elastomer, useful e.g. in injection molding process and for printing on non-woven fabrics, comprises rubber having e.g. peroxidic crosslinkable functional groups, crosslinker, hydrosilylation catalyst, filler and coagent

Also Published As

Publication number Publication date
JP3120540B2 (en) 2000-12-25

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