JP2002040760A - Electrifying member - Google Patents
Electrifying memberInfo
- Publication number
- JP2002040760A JP2002040760A JP2001128650A JP2001128650A JP2002040760A JP 2002040760 A JP2002040760 A JP 2002040760A JP 2001128650 A JP2001128650 A JP 2001128650A JP 2001128650 A JP2001128650 A JP 2001128650A JP 2002040760 A JP2002040760 A JP 2002040760A
- Authority
- JP
- Japan
- Prior art keywords
- surface treatment
- charging member
- imparting agent
- conductivity
- roll
- 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
Links
Landscapes
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Polyurethanes Or Polyureas (AREA)
- Dry Development In Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子写真式複写機
及びプリンタ、またはトナージェット式複写機及びプリ
ンタなどの画像形成装置の感光体等に一様な帯電を付与
するために用いられる帯電部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging member used for uniformly charging a photosensitive member of an image forming apparatus such as an electrophotographic copying machine and a printer or a toner jet copying machine and a printer. About.
【０００２】[0002]
【従来の技術】電子写真式複写機及びプリンタ、または
トナージェット式複写機及びプリンタなどの画像形成装
置の帯電ロール・現像ロール、トナー規制、さらには中
間転写ロール、ベルト等には、感光体等への非汚染性の
他、所定の導電性、摩擦係数等が要求される。そこで、
従来、ポリウレタン、シリコーンゴム製のものが用いら
れていたが、感光体等への汚染性、帯電性等の理由か
ら、ポリウレタン、シリコーンゴムに代わって各種弾性
層表面に各種コーティング層、被覆チューブを設けたも
のが提案されている。2. Description of the Related Art An electrophotographic copying machine and a printer, or a toner roll and a developing roller of an image forming apparatus such as a toner jet copying machine and a printer; In addition to the non-staining property, a predetermined conductivity, a coefficient of friction, and the like are required. Therefore,
Conventionally, those made of polyurethane or silicone rubber have been used.However, for reasons such as contamination of the photoreceptor and charging properties, various coating layers and coating tubes are provided on the surface of various elastic layers instead of polyurethane and silicone rubber. Provisions have been made.
【０００３】例えば、特開平５−２０４２３４号公報に
は、導電性スポンジ体層上にポリアミド樹脂チューブか
らなる導電性最外層を設けた現像ロールが提案されてい
る。また、特開平７−１３４４６７号公報には、ワック
ス等の滑剤を含む表面層を具備する帯電部材が開示され
ている。また、特開平８−１６０７０１号公報には、フ
ッ化炭素を含有する導電性重合体からなる塗布層または
シームレスチューブからなる表面層を有する帯電部材が
開示されている。For example, Japanese Patent Application Laid-Open No. 5-204234 proposes a developing roll in which a conductive outermost layer made of a polyamide resin tube is provided on a conductive sponge body layer. Japanese Patent Application Laid-Open No. Hei 7-134467 discloses a charging member having a surface layer containing a lubricant such as wax. Japanese Patent Application Laid-Open No. 8-160701 discloses a charging member having a coating layer made of a conductive polymer containing fluorocarbon or a surface layer made of a seamless tube.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、塗布等
により設けられた表面層は必ずしも基材との接着が良好
な訳ではなく、耐久性に劣り、長期信頼性に欠けるとい
う問題がある。また、シームレスチューブからなる表面
層は作業性に劣りコスト高であると共に弾性層と別体と
なるので、帯電特性等の問題で十分ではないという問題
がある。However, the surface layer provided by coating or the like does not always have good adhesion to the substrate, and has a problem that it is inferior in durability and lacks long-term reliability. Further, the surface layer made of a seamless tube is inferior in workability and is expensive, and is separate from the elastic layer. Therefore, there is a problem that charging characteristics and the like are not sufficient.
【０００５】そこで、本出願人は、形成が容易であり且
つ弾性層と一体的になって耐久性に優れたものとして、
表面をイソシアネート化合物で処理して表面処理層を設
けた現像ロールを先に開発した（特開平５−１７３４０
９号公報）。しかしながら、イソシアネート処理層を設
けたものは、回転トルクが高過ぎて、ジッタ、フィルミ
ング、トナー搬送性の増大等の虞がある。[0005] The applicant of the present invention has proposed a device which is easy to form and has excellent durability by being integrated with the elastic layer.
A developing roll having a surface-treated layer provided by treating the surface with an isocyanate compound was previously developed (JP-A-5-17340).
No. 9). However, those provided with the isocyanate treatment layer have too high a rotational torque, and may cause jitter, filming, increase in toner transportability, and the like.
【０００６】本発明はこのような事情に鑑み、低コスト
で、良好な特性を長期間に亘って維持することができる
帯電部材を提供することを課題とする。[0006] In view of such circumstances, an object of the present invention is to provide a charging member which can maintain good characteristics at a low cost over a long period of time.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決する本発
明の第１の態様は、エピクロルヒドリン系ゴム基材から
なる弾性層を有する帯電部材であって、アクリルフッ素
系ポリマー及びアクリルシリコーン系ポリマーから選択
される少なくとも一種のポリマーと、導電性付与剤と、
イソシアネート成分とを含有する表面処理液で形成され
た表面処理層を有することを特徴とする帯電部材にあ
る。A first aspect of the present invention for solving the above-mentioned problems is a charging member having an elastic layer composed of an epichlorohydrin-based rubber base material, comprising a fluorinated acrylic polymer and an acryl silicone-based polymer. At least one polymer selected, and a conductivity-imparting agent,
A charging member having a surface treatment layer formed of a surface treatment solution containing an isocyanate component.
【０００８】本発明の第２の態様は、第１の態様におい
て、前記弾性層が、エピクロルヒドリンゴム、エピクロ
ルヒドリンとエチレンオキサイドとの共重合体、及びエ
ピクロルヒドリンとエチレンオキサイドとアリルグリシ
ジルエーテルとの共重合体からなる群から選択される少
なくとも一種を含む材料からなることを特徴とする帯電
部材にある。According to a second aspect of the present invention, in the first aspect, the elastic layer is made of an epichlorohydrin rubber, a copolymer of epichlorohydrin and ethylene oxide, and a copolymer of epichlorohydrin, ethylene oxide and allyl glycidyl ether. A charging member comprising a material containing at least one selected from the group consisting of:
【０００９】本発明の第３の態様は、第１又は２の態様
において、前記弾性層のゴム硬度がＪＩＳ Ａで３０°
〜７０°であることを特徴とする帯電部材にある。According to a third aspect of the present invention, in the first or second aspect, the rubber hardness of the elastic layer is 30 ° in JIS A.
帯 電 70 °.
【００１０】本発明の第４の態様は、第１〜３の何れか
の態様において、前記導電付与剤が、金属酸化物の微粉
末及びカーボンブラックからなる群から選択される少な
くとも一種の電子導電性付与剤であることを特徴とする
帯電部材にある。According to a fourth aspect of the present invention, in any one of the first to third aspects, the conductivity-imparting agent is at least one kind selected from the group consisting of metal oxide fine powder and carbon black. A charging member characterized by being a property imparting agent.
【００１１】本発明の第５の態様は、第１〜３の何れか
の態様において、前記導電付与剤が、金属酸化物の微粉
末及びカーボンブラックからなる群から選択される少な
くとも一種の電子導電付与剤とイオン導電付与剤とから
なることを特徴とする帯電部材にある。According to a fifth aspect of the present invention, in any one of the first to third aspects, the conductivity-imparting agent is at least one kind selected from the group consisting of fine powders of metal oxides and carbon black. The charging member comprises an imparting agent and an ionic conductivity imparting agent.
【００１２】本発明の第６の態様は、第１〜５の何れか
の態様において、前記表面処理液中の導電付与剤は、イ
ソシアネート成分に対して１０〜４０重量％であること
を特徴とする帯電部材にある。According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the conductivity imparting agent in the surface treatment liquid is 10 to 40% by weight based on the isocyanate component. Charging member.
【００１３】本発明の第７の態様は、第１〜６の何れか
の態様において、前記表面処理液中のポリマーは、イソ
シアネート成分に対して２〜３０重量％であることを特
徴とする帯電部材にある。According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the polymer in the surface treatment liquid is 2 to 30% by weight based on the isocyanate component. In the member.
【００１４】本発明の第８の態様は、第１〜７の何れか
の態様において、前記表面処理層が、前記エピクロルヒ
ドリン系ゴム基材の表面に前記表面処理液を含浸し、加
熱処理することにより形成されることを特徴とする帯電
部材にある。According to an eighth aspect of the present invention, in any one of the first to seventh aspects, the surface treatment layer impregnates the surface of the epichlorohydrin-based rubber substrate with the surface treatment solution and heat-treats the surface. The charging member is characterized by being formed by:
【００１５】本発明によると、帯電部材表面に一体的に
設けられた表面処理層にはアクリルフッ素系ポリマー又
はアクリルシリコーン系ポリマー及びカーボンブラック
が一体的に含有される。すなわち、このように形成され
る表面処理層は、ゴム部材表面に表面処理液を含浸させ
ることにより形成されるので、表面処理層は表面から内
部に向かって漸次疎になるように一体的に形成される。
従って、有機感光体に接触しても汚染することはなく、
電気特性の環境依存性が小さく、トナー成分の耐フィル
ミング性に優れた帯電部材を提供することができる。According to the present invention, the surface treatment layer provided integrally on the surface of the charging member contains an acrylic fluorine-based polymer or an acrylic silicone-based polymer and carbon black in an integrated manner. That is, since the surface treatment layer thus formed is formed by impregnating the surface of the rubber member with a surface treatment solution, the surface treatment layer is integrally formed so as to gradually become sparse from the surface toward the inside. Is done.
Therefore, even if it comes in contact with the organic photoreceptor, there is no contamination,
It is possible to provide a charging member having small environmental dependence of electric characteristics and having excellent filming resistance of a toner component.
【００１６】本発明で用いる表面処理液は、イソシアネ
ート化合物にアクリルフッ素系ポリマー又はアクリルシ
リコーン系ポリマーと、導電性付与剤とを配合したもの
である。The surface treatment solution used in the present invention is a mixture of an isocyanate compound, an acrylic fluoropolymer or an acrylic silicone polymer, and a conductivity-imparting agent.
【００１７】ここで、イソシアネート化合物としては、
２，６−トリレンジイソシアネート（ＴＤＩ）、４，
４’−ジフェニルメタンジイソシアネート（ＭＤＩ）、
パラフェニレンジイソシアネート（ＰＰＤＩ）、１，５
−ナフタレンジイソシアネート（ＮＤＩ）及び３，３−
ジメチルジフェニル−４，４’−ジイソシアネート（Ｔ
ＯＤＩ）などを挙げることができる。Here, as the isocyanate compound,
2,6-tolylene diisocyanate (TDI), 4,
4'-diphenylmethane diisocyanate (MDI),
Paraphenylene diisocyanate (PPDI), 1,5
-Naphthalene diisocyanate (NDI) and 3,3-
Dimethyldiphenyl-4,4'-diisocyanate (T
ODI).
【００１８】また、アクリルフッ素系ポリマー及びアク
リルシリコーン系ポリマーは、所定の溶剤に可溶でイソ
シアネート化合物と反応して化学的に結合可能なもので
ある。The acrylic fluorine-based polymer and acrylic silicone-based polymer are soluble in a predetermined solvent and can react with an isocyanate compound to form a chemical bond.
【００１９】アクリルフッ素系ポリマーは、例えば、水
酸基、アルキル基、又はカルボキシル基を有する溶剤可
溶性のフッ素系ポリマーであり、例えば、アクリル酸エ
ステルとアクリル酸フッ化アルキルのブロックコポリマ
ーやその誘導体等を挙げることができる。The acrylic fluorine-based polymer is, for example, a solvent-soluble fluorine-containing polymer having a hydroxyl group, an alkyl group, or a carboxyl group, and includes, for example, a block copolymer of an acrylate and an alkyl fluorinated acrylate or a derivative thereof. be able to.
【００２０】また、アクリルシリコーン系ポリマーは、
溶剤可溶性のシリコーン系ポリマーであり、例えば、ア
クリル酸エステルとアクリル酸シロキサンエステルのブ
ロックコポリマーやその誘導体等を挙げることができ
る。The acrylic silicone polymer is
It is a solvent-soluble silicone-based polymer, and examples thereof include a block copolymer of an acrylate ester and a siloxane acrylate ester and derivatives thereof.
【００２１】本発明では、これらのポリマーを一種又は
二種以上混合して用いる。表面処理液中のポリマーは、
イソシアネート成分に対して２〜３０重量％とするのが
好ましい。少ないとカーボンブラックを表面処理層中に
保持する効果が小さくなり、多すぎると相対的にイソシ
アネート成分が少なくなって有効な表面処理層が形成で
きない。In the present invention, these polymers are used alone or in combination of two or more. The polymer in the surface treatment liquid is
The content is preferably 2 to 30% by weight based on the isocyanate component. If the amount is too small, the effect of retaining the carbon black in the surface treatment layer becomes small, and if it is too large, the isocyanate component becomes relatively small, and an effective surface treatment layer cannot be formed.
【００２２】本発明で表面処理層中に含有される導電性
付与剤としては、錫、亜鉛、アンチモンなどの酸化物で
ある金属酸化物の微粉末及びカーボンブラックなどの導
電性カーボンからなる群から選択される少なくとも一種
の電子導電性付与剤を挙げることができ、これにさら
に、イオン導電性付与剤を加えて用いてもよい。イオン
導電性付与剤としては、Li、Na、K、Ca、Mgなどの金属
のアンモニア錯塩、過塩素酸塩、臭素酸塩、ヨウ素酸
塩、カルボン酸塩、スルフォン酸塩、硫酸塩、酢酸塩な
どを挙げることができ、過塩素酸リチウムなどが好適に
使用できる。The conductivity-imparting agent contained in the surface treatment layer in the present invention is selected from the group consisting of fine powders of metal oxides such as tin, zinc and antimony and conductive carbon such as carbon black. At least one type of electron conductivity-imparting agent selected can be used, and an ionic conductivity-imparting agent may be further added thereto. Examples of the ionic conductivity-imparting agent include ammonia complex salts of metals such as Li, Na, K, Ca, and Mg, perchlorates, bromates, iodates, carboxylates, sulfonates, sulfates, and acetates. And the like, and lithium perchlorate and the like can be suitably used.
【００２３】特に、本発明では、導電性付与剤としてカ
ーボンブラックを用いるのが好ましい。カーボンブラッ
クの種類は特に限定されず、例えば、ケッチェンブラッ
ク（ライオン社製）、トーカブラック＃５５００（東海
カーボン社製）などが挙げられる。Particularly, in the present invention, it is preferable to use carbon black as the conductivity-imparting agent. The type of carbon black is not particularly limited, and examples thereof include Ketjen Black (manufactured by Lion Corporation) and Toka Black # 5500 (manufactured by Tokai Carbon Co., Ltd.).
【００２４】表面処理液中のカーボンブラックなどの導
電性付与剤は、イソシアネート成分に対して１０〜４０
重量％であるのが好ましい。これより少ないと有効な帯
電特性が発揮できず、多すぎると脱落等の問題が生じ好
ましくないからである。The conductivity-imparting agent such as carbon black in the surface treatment solution is used in an amount of 10 to 40 with respect to the isocyanate component.
Preferably, it is weight%. If the amount is less than this, effective charging characteristics cannot be exhibited, and if the amount is too large, problems such as falling off occur, which is not preferable.
【００２５】さらに、表面処理液は、これらアクリルフ
ッ素系ポリマー又はアクリルシリコーン系ポリマー及び
イソシアネート化合物を溶解する溶剤を含有する。溶剤
としては特に限定されないが、酢酸エチル、メチルエチ
ルケトン（ＭＥＫ）、トルエン等の有機溶剤を用いれば
よい。Further, the surface treatment liquid contains a solvent for dissolving the acrylic fluoropolymer or acrylic silicone polymer and the isocyanate compound. The solvent is not particularly limited, but an organic solvent such as ethyl acetate, methyl ethyl ketone (MEK), and toluene may be used.
【００２６】一方、帯電部材の弾性層の材料としては、
エピクロルヒドリン系ゴム材料、例えば、エピクロルヒ
ドリンゴム、又はエピクロルヒドリンとエチレンオキサ
イドとの共重合体、及びエピクロルヒドリンとエチレン
オキサイドとアリルグリシジルエーテルとの共重合体な
どを主体とするものが用いられる。このエピクロルヒド
リン系ゴムのゴム硬度はＪＩＳ Ａで３０〜７０°のも
のを用いるのが好ましい。On the other hand, as the material of the elastic layer of the charging member,
An epichlorohydrin rubber material, for example, an epichlorohydrin rubber, or a material mainly composed of a copolymer of epichlorohydrin and ethylene oxide, a copolymer of epichlorohydrin, ethylene oxide, and allyl glycidyl ether is used. The epichlorohydrin rubber preferably has a rubber hardness of 30 to 70 ° in JIS A.
【００２７】本発明の弾性層には、導電性付与剤が添加
されていてもよい。導電性付与剤としては、上述した電
子導電性付与剤、イオン導電付与剤、又はこれらの両者
を混合して用いることができる。The elastic layer of the present invention may contain a conductivity-imparting agent. As the conductivity imparting agent, the above-described electron conductivity imparting agent, ionic conductivity imparting agent, or a mixture of both of them can be used.
【００２８】このように導電性付与剤により導電性を付
与された弾性層の導電性は１×１０ 5〜１×１０10Ω・
ｃｍ程度とするのが好ましい。Thus, the conductivity is imparted by the conductivity imparting agent.
The conductivity of the applied elastic layer is 1 × 10 Five~ 1 × 10TenΩ
cm is preferable.
【００２９】このゴム部材の表面に上述した表面処理液
を含浸させて表面処理層を形成することにより、良好な
特性を長期間に亘って有する帯電部材を低コストで形成
することができる。By forming the surface treatment layer by impregnating the surface of the rubber member with the above-described surface treatment liquid, a charging member having good characteristics over a long period of time can be formed at low cost.
【００３０】[0030]
【発明の実施の形態】以下、本発明を実施形態に基づい
て説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments.
【００３１】図１は、一実施形態に係る帯電ロールの斜
視図及び断面図である。図１に示すように、芯金１上に
はエピクロルヒドリンゴムを基材とする導電性弾性層２
が設けられ、また、導電性弾性層２上には表面処理層３
が一体的に形成されている。FIG. 1 is a perspective view and a sectional view of a charging roll according to one embodiment. As shown in FIG. 1, a conductive elastic layer 2 made of epichlorohydrin rubber is
And a surface treatment layer 3 on the conductive elastic layer 2.
Are integrally formed.
【００３２】また、図２は、他の実施形態に係る帯電ブ
レードの断面図である。図２に示すように、ホルダー１
１上には導電性弾性層１２が設けられ、導電性弾性層１
２上には表面処理層１３が一体的に形成されている。FIG. 2 is a sectional view of a charging blade according to another embodiment. As shown in FIG.
1, a conductive elastic layer 12 is provided.
2, a surface treatment layer 13 is integrally formed.
【００３３】以下に帯電ロールを例として製造例を示
す。A production example will be described below using a charging roll as an example.
【００３４】（実施例１） （ロールの製造）エピクロルヒドリンゴム（エピクロマ
ーＣＧ−１０２；ダイソー社製）１００重量部に対して
導電材としてトリフルオロ酢酸ナトリウム０．３重量
部、酸化亜鉛（ＺｎＯ）５重量部、加硫剤としての２−
メルカプトイミダゾリン（アクセル−２２）２重量部を
ロールミキサーで混練りし、直径６ｍｍの金属製シャフ
トの表面にプレス成形し、直径１２ｍｍに研磨加工して
シャフト表面にゴム弾性部材が形成されたロールを得
た。(Example 1) (Manufacture of roll) 0.3 parts by weight of sodium trifluoroacetate and zinc oxide (ZnO) 5 as a conductive material per 100 parts by weight of epichlorohydrin rubber (Epichromer CG-102; manufactured by Daiso) Parts by weight, 2- as a vulcanizing agent
2 parts by weight of mercaptoimidazoline (Axel-22) are kneaded with a roll mixer, press-molded on the surface of a metal shaft having a diameter of 6 mm, and polished to a diameter of 12 mm to form a roll having a rubber elastic member formed on the shaft surface. Obtained.
【００３５】（表面処理液の調製）酢酸エチル１００重
量部、イソシアネート化合物（ＭＤ１；大日本インキ社
製）２０重量部、アセチレンブラック（電気化学社製）
４重量部、アクリルシリコーンポリマー（モデイバーＦ
Ｓ７００；日本油脂社製）２重量部をボールミルで３時
間分散混合した。(Preparation of Surface Treatment Solution) 100 parts by weight of ethyl acetate, 20 parts by weight of isocyanate compound (MD1; manufactured by Dainippon Ink), acetylene black (manufactured by Denki Kagaku)
4 parts by weight, acrylic silicone polymer (Modebar F
S700; manufactured by NOF Corporation, 2 parts by weight were dispersed and mixed in a ball mill for 3 hours.
【００３６】（ロールの表面処理）前記溶液を２３℃に
保ったまま、前記ロールを１０秒間浸漬後、１２０℃に
保持されたオーブンで１時間加熱し、帯電ロールを得
た。(Surface Treatment of Roll) While keeping the solution at 23 ° C., the roll was immersed for 10 seconds and then heated in an oven maintained at 120 ° C. for 1 hour to obtain a charged roll.
【００３７】（実施例２） （ロールの製造）実施例１の（ロールの製造）と同じ方
法によりロールを得た。Example 2 (Production of Roll) A roll was obtained in the same manner as in (Production of Roll) in Example 1.
【００３８】（表面処理液の調製）酢酸エチル１００重
量部、イソシアネート化合物（ＭＤ１；大日本インキ社
製）２０重量部、アセチレンブラック（電気化学社製）
４重量部、アクリルフッ素ポリマー（ノバフッソ；大日
本色材製）２重量部をボールミルで３時間分散混合し
た。(Preparation of Surface Treatment Solution) 100 parts by weight of ethyl acetate, 20 parts by weight of an isocyanate compound (MD1; manufactured by Dainippon Ink), acetylene black (manufactured by Denki Kagaku)
4 parts by weight and 2 parts by weight of an acrylic fluoropolymer (Novafusso; manufactured by Dainippon Color Materials) were dispersed and mixed in a ball mill for 3 hours.
【００３９】（ロールの表面処理）前記溶液を２３℃に
保ったまま、前記ロールを１０秒間浸漬後、１２０℃に
保持されたオーブンで１時間加熱し、帯電ロールを得
た。(Surface Treatment of Roll) While keeping the solution at 23 ° C., the roll was immersed for 10 seconds, and heated in an oven maintained at 120 ° C. for 1 hour to obtain a charged roll.
【００４０】（比較例１） （ロールの製造）実施例１の（ロールの製造）と同じ方
法によりロールを得た。Comparative Example 1 (Production of Roll) A roll was obtained in the same manner as in (Production of Roll) in Example 1.
【００４１】（表面処理液の調製）酢酸エチルに対して
１０重量％のイソシアネート化合物（ＭＤ１；大日本イ
ンキ社製）が配合された酢酸エチル溶液とした。(Preparation of Surface Treatment Solution) An ethyl acetate solution containing 10% by weight of isocyanate compound (MD1; manufactured by Dainippon Ink and Chemicals, Inc.) based on ethyl acetate was prepared.
【００４２】（ロールの表面処理）前記溶液を２３℃に
保ったまま、前記ロールを１０秒間浸漬後、１２０℃に
保持されたオーブンで１時間加熱し、帯電ロールを得
た。(Surface Treatment of Roll) While keeping the solution at 23 ° C., the roll was immersed for 10 seconds, and heated in an oven maintained at 120 ° C. for 1 hour to obtain a charged roll.
【００４３】（比較例２） （ロールの製造）実施例１の（ロールの製造）と同じ方
法によりロールを得た。(Comparative Example 2) (Production of Roll) A roll was obtained in the same manner as in (Production of Roll) in Example 1.
【００４４】（表面処理液の調製）酢酸エチル１００重
量部、イソシアネート化合物（ＭＤ１；大日本インキ社
製）２０重量部、アクリルフッ素ポリマー（ノバフッ
ソ；大日本色材製）２重量部をボールミルで３時間分散
混合した。(Preparation of Surface Treatment Solution) 100 parts by weight of ethyl acetate, 20 parts by weight of an isocyanate compound (MD1; manufactured by Dainippon Ink Co., Ltd.), and 2 parts by weight of an acrylic fluoropolymer (Novafusso; manufactured by Dainippon Color Materials) were subjected to ball milling. Time-dispersed and mixed.
【００４５】（ロールの表面処理）前記溶液を２３℃に
保ったまま、前記ロールを１０秒間浸漬後、１２０℃に
保持されたオーブンで１時間加熱し、帯電ロールを得
た。(Surface Treatment of Roll) While keeping the solution at 23 ° C., the roll was immersed for 10 seconds and heated in an oven maintained at 120 ° C. for 1 hour to obtain a charged roll.
【００４６】（比較例３） （ロールの製造）実施例１の（ロールの製造）と同じ方
法によりロールを得た。Comparative Example 3 (Production of Roll) A roll was obtained in the same manner as in (Production of Roll) in Example 1.
【００４７】（表面処理液の調製）酢酸エチル１００重
量部、イソシアネート化合物（ＭＤ１；大日本インキ社
製）２０重量部、アセチレンブラック（電気化学社製）
４重量部をボールミルで３時間分散混合した。(Preparation of Surface Treatment Solution) 100 parts by weight of ethyl acetate, 20 parts by weight of isocyanate compound (MD1; manufactured by Dainippon Ink), acetylene black (manufactured by Denki Kagaku)
4 parts by weight were dispersed and mixed in a ball mill for 3 hours.
【００４８】（ロールの表面処理）前記溶液を２３℃に
保ったまま、前記ロールを１０秒間浸漬後、１２０℃に
保持されたオーブンで１時間加熱し、帯電ロールを得
た。(Surface Treatment of Roll) While keeping the solution at 23 ° C., the roll was immersed for 10 seconds and heated for 1 hour in an oven maintained at 120 ° C. to obtain a charged roll.
【００４９】（試験例１）：電気抵抗値 上記各実施例および比較例の帯電ロールについて、Ｌ
Ｌ：１０℃、３０％ＲＨ；ＮＮ：２５℃、５５％ＲＨ；
ＨＨ：４０℃、８０％ＲＨの各環境下に保持したときの
ロールの電気抵抗値を測定した。なお、帯電ロールの抵
抗値は図３に示すような方法で測定した。すなわち、帯
電ロールをＳＵＳ３０４板からなる電極部材２１上に載
置し、芯金１の両端に５００ｇ重の荷重をかけた状態
で、芯金１と電極部材２１との間の抵抗値をＵＬＴＲＡ
ＨＩＧＨ ＲＥＳＩＳＴＡＮＣＥＭＥＴＥＲ Ｒ８３
４０Ａ（株式会社アドバンテスト製）を用いて測定し
た。なお、このときの印加電圧は５００Ｖであった。こ
の結果は表１に示す。(Test Example 1): Electric resistance value
L: 10 ° C, 30% RH; NN: 25 ° C, 55% RH;
HH: The electric resistance value of the roll was measured under each environment of 40 ° C. and 80% RH. The resistance value of the charging roll was measured by a method as shown in FIG. That is, the charging roller is placed on the electrode member 21 made of a SUS304 plate, and a load of 500 g weight is applied to both ends of the core bar 1, and the resistance value between the core bar 1 and the electrode member 21 is set to ULTRA.
HIGH RESISTANCE METER R83
It measured using 40A (made by Advantest Co., Ltd.). The applied voltage at this time was 500V. The results are shown in Table 1.
【００５０】（試験例２）：画像評価 市販のレーザープリンターの帯電部分に、上記各実施例
及び比較例の帯電ロールを取り付けた。このプリンター
を起動し、試験例１のＬＬおよびＨＨの各環境下で画像
を出力した。この結果も表１に示す。(Test Example 2): Image Evaluation The charging rolls of the above Examples and Comparative Examples were attached to the charged portion of a commercially available laser printer. The printer was started up and an image was output under each of the LL and HH environments in Test Example 1. The results are also shown in Table 1.
【００５１】（試験例３）：連続印刷 市販のレーザープリンターに上記実施例及び比較例の帯
電ロールを取り付け、１００００枚連続印刷後のロール
表面の顕微鏡観察及び画像の比較を行った。この結果も
表１に示す。(Test Example 3): Continuous Printing The charging rolls of the above Examples and Comparative Examples were attached to a commercially available laser printer, and the roll surface after continuous printing of 10,000 sheets was compared with a microscope and images were compared. The results are also shown in Table 1.
【００５２】（試験例４）：ロール表面ダメージ 市販のレーザープリンターのトナーカートリッジに上記
実施例及び比較例の帯電ロールを組付けて、カートリッ
ジごと５０℃、９０％ＲＨの環境に１４日間保持した
後、カートリッジ及び帯電ロールをプリンターに組付け
て画像を出力した。このときの画像の比較及び帯電ロー
ルの表面を顕微鏡観察した。この結果も表１に示す。(Test Example 4): Roll Surface Damage The charging rolls of the above Examples and Comparative Examples were assembled to a toner cartridge of a commercially available laser printer, and the entire cartridge was kept in an environment of 50 ° C. and 90% RH for 14 days. The cartridge and the charging roll were attached to a printer to output an image. At this time, the images were compared and the surface of the charging roll was observed under a microscope. The results are also shown in Table 1.
【００５３】[0053]
【表１】 [Table 1]
【００５４】表１に示すように、試験例１では、電気抵
抗値の環境依存性（ＬＬ〜ＨＨ）が実施例１及び２の帯
電ロールでは小さく良好なのに対し、比較例１〜３の帯
電ロールでは大きいことが分かる。As shown in Table 1, in Test Example 1, the environment dependence (LL to HH) of the electric resistance value was small and good for the charging rolls of Examples 1 and 2, whereas the charging rolls of Comparative Examples 1 to 3 were good. Then you can see that it is big.
【００５５】また、試験例２では、実施例１、２及び比
較例１の帯電ロールでは画像の環境依存性（ＬＬ〜Ｈ
Ｈ）が良好でムラ及び劣化が見られないのに対し、比較
例２及び３の帯電ロールでは、画像のムラ及び劣化が見
られた。In Test Example 2, the charging rolls of Examples 1 and 2 and Comparative Example 1 showed that the image depended on the environment (LL to H).
H) was good and no unevenness and deterioration were observed, whereas in the charging rolls of Comparative Examples 2 and 3, image unevenness and deterioration were observed.
【００５６】また、試験例３では、実施例１、２及び比
較例２の耐電ロールではロール表面にフィルミングが少
なく画像の劣化が見られないのに対し、比較例１及び３
の帯電ロールではロール表面が真白にフィルミングして
画像にもムラが見られた。In Test Example 3, the antistatic rolls of Examples 1 and 2 and Comparative Example 2 showed little filming on the roll surface and no image deterioration, while Comparative Examples 1 and 3
With the charging roll of No. 1, the roll surface was filmed white, and the image was uneven.
【００５７】さらに、試験例４では、実施例１、２及び
比較例２の帯電ロールでは画像、ロール表面に保持前と
比べ変化がないのに対し、比較例１及び３の帯電ロール
ではロール表面にブリードが見られ、画像にも劣化が見
られた。Further, in Test Example 4, the images and the roll surface of the charging rolls of Examples 1 and 2 and Comparative Example 2 did not change from those before holding, whereas the charging rolls of Comparative Examples 1 and 3 exhibited the same surface. Bleeding was observed, and the image was also deteriorated.
【００５８】このような結果から、実施例１及び２の帯
電ロールは、優れたロール特性を示した。From these results, the charging rolls of Examples 1 and 2 exhibited excellent roll characteristics.
【００５９】また、実施例１及び２の帯電ロールは表面
処理液を導電性弾性層の表面に含浸させるだけで表面処
理層を形成すると共に優れたロール特性を付与できるた
め、低コストで量産することができる。Further, the charging rolls of Examples 1 and 2 can be mass-produced at low cost because they can form a surface treatment layer and impart excellent roll characteristics only by impregnating the surface of the conductive elastic layer with a surface treatment liquid. be able to.
【００６０】[0060]
【発明の効果】以上説明したように、本発明の帯電部材
は、容易に形成できると共に耐久性を向上することがで
き、製造コストを低減することができる。また、これを
用いた現像ロールはロールの特性を向上することができ
る。As described above, the charging member of the present invention can be easily formed, can have improved durability, and can reduce the manufacturing cost. Further, a developing roll using this can improve the properties of the roll.
【図１】本発明の一実施例に係る帯電ロールの斜視図及
び断面図である。FIG. 1 is a perspective view and a sectional view of a charging roll according to an embodiment of the present invention.
【図２】本発明の他の実施形態に係る帯電ブレードの断
面図である。FIG. 2 is a sectional view of a charging blade according to another embodiment of the present invention.
【図３】帯電ロールの抵抗値の測定方法を示す図であ
る。FIG. 3 is a diagram illustrating a method of measuring a resistance value of a charging roll.
１ 芯金 ２ 導電性弾性層 ３ 表面処理層 １１ ホルダー １２ 導電性弾性層 １３ 表面処理層 DESCRIPTION OF SYMBOLS 1 Core metal 2 Conductive elastic layer 3 Surface treatment layer 11 Holder 12 Conductive elastic layer 13 Surface treatment layer
フロントページの続き Ｆターム(参考） 2H077 AD06 AE04 FA12 FA22 FA25 2H200 GA49 HA01 HA28 HB12 HB14 HB45 HB46 MA03 MA14 MA20 MB01 3J103 AA02 AA14 AA32 AA51 BA41 CA02 FA12 GA02 GA57 GA58 HA04 HA12 HA52 HA53 HA54 4F006 AA31 AB24 AB72 AB74 BA07 CA01 DA00 EA05 4J034 AA01 AA08 AA10 BA03 DA01 DA05 DB03 DD06 DD11 DP18 DQ15 GA33 GA47 GA48 HA01 HA07 HC12 HC13 HC61 HC64 HC71 KB04 KE03 MA01 MA02 MA03 MA12 MA15 MA16 QB07 QB12 QC03 RA05 RA07 RA11Continued on the front page F-term (reference) 2H077 AD06 AE04 FA12 FA22 FA25 2H200 GA49 HA01 HA28 HB12 HB14 HB45 HB46 MA03 MA14 MA20 MB01 3J103 AA02 AA14 AA32 AA51 BA41 CA02 FA12 GA02 GA57 GA58 HA04 HA12 HA52 HA53 HA54 4F006 AB DA00 EA05 4J034 AA01 AA08 AA10 BA03 DA01 DA05 DB03 DD06 DD11 DP18 DQ15 GA33 GA47 GA48 HA01 HA07 HC12 HC13 HC61 HC64 HC71 KB04 KE03 MA01 MA02 MA03 MA12 MA15 MA16 QB07 QB12 QC03 RA05 RA07 RA11
Claims (8)
弾性層を有する帯電部材であって、アクリルフッ素系ポ
リマー及びアクリルシリコーン系ポリマーから選択され
る少なくとも一種のポリマーと、導電性付与剤と、イソ
シアネート成分とを含有する表面処理液で形成された表
面処理層を有することを特徴とする帯電部材。1. A charging member having an elastic layer composed of an epichlorohydrin-based rubber substrate, comprising: at least one polymer selected from an acrylic fluorine-based polymer and an acrylic silicone-based polymer; a conductivity imparting agent; and an isocyanate component. A charging member having a surface treatment layer formed with a surface treatment solution containing:
クロルヒドリンゴム、エピクロルヒドリンとエチレンオ
キサイドとの共重合体、及びエピクロルヒドリンとエチ
レンオキサイドとアリルグリシジルエーテルとの共重合
体からなる群から選択される少なくとも一種を含む材料
からなることを特徴とする帯電部材。2. The elastic layer according to claim 1, wherein the elastic layer is at least one selected from the group consisting of epichlorohydrin rubber, a copolymer of epichlorohydrin and ethylene oxide, and a copolymer of epichlorohydrin, ethylene oxide and allyl glycidyl ether. A charging member comprising a material containing one kind.
ゴム硬度がＪＩＳＡで３０°〜７０°であることを特徴
とする帯電部材。3. The charging member according to claim 1, wherein the elastic layer has a rubber hardness of 30 ° to 70 ° according to JISA.
電性付与剤が、金属酸化物の微粉末及びカーボンブラッ
クからなる群から選択される少なくとも一種の電子導電
性付与剤であることを特徴とする帯電部材。4. The method according to claim 1, wherein the conductivity-imparting agent is at least one kind of electron conductivity-imparting agent selected from the group consisting of metal oxide fine powder and carbon black. Characteristic charging member.
電性付与剤が、金属酸化物の微粉末及びカーボンブラッ
クからなる群から選択される少なくとも一種の電子導電
性付与剤とイオン導電性付与剤とからなることを特徴と
する帯電部材。5. The ionic conductivity according to claim 1, wherein the conductivity-imparting agent is at least one type of electron conductivity-imparting agent selected from the group consisting of metal oxide fine powder and carbon black. A charging member comprising: an imparting agent.
面処理液中の導電付与剤は、イソシアネート成分に対し
て１０〜４０重量％であることを特徴とする帯電部材。6. The charging member according to claim 1, wherein the conductivity-imparting agent in the surface treatment liquid accounts for 10 to 40% by weight based on the isocyanate component.
面処理液中のポリマーは、イソシアネート成分に対して
２〜３０重量％であることを特徴とする帯電部材。7. The charging member according to claim 1, wherein the amount of the polymer in the surface treatment liquid is 2 to 30% by weight based on the isocyanate component.
面処理層が、前記エピクロルヒドリン系ゴム基材の表面
に前記表面処理液を含浸し、加熱処理することにより形
成されることを特徴とする帯電部材。8. The surface treatment layer according to claim 1, wherein the surface treatment layer is formed by impregnating the surface of the epichlorohydrin-based rubber base material with the surface treatment solution and performing a heat treatment. Charging member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001128650A JP3731734B2 (en) | 2000-05-16 | 2001-04-26 | Charging member |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000142769 | 2000-05-16 | ||
| JP2000-142769 | 2000-05-16 | ||
| JP2001128650A JP3731734B2 (en) | 2000-05-16 | 2001-04-26 | Charging member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002040760A true JP2002040760A (en) | 2002-02-06 |
| JP3731734B2 JP3731734B2 (en) | 2006-01-05 |
Family
ID=26591932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001128650A Expired - Lifetime JP3731734B2 (en) | 2000-05-16 | 2001-04-26 | Charging member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3731734B2 (en) |
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| JP2006053544A (en) * | 2004-07-12 | 2006-02-23 | Hokushin Ind Inc | Electrifying roll and method for manufacturing the same |
| JP2006207807A (en) * | 2004-12-28 | 2006-08-10 | Hokushin Ind Inc | Conductive roll and inspection method therefor |
| JP2006267758A (en) * | 2005-03-25 | 2006-10-05 | Fuji Xerox Co Ltd | Image forming apparatus |
| JP2007039678A (en) * | 2005-07-08 | 2007-02-15 | Hokushin Ind Inc | Rubber member |
| JP2008274262A (en) * | 2007-04-04 | 2008-11-13 | Synztec Co Ltd | Electroconductive rubber member |
| US7537717B2 (en) | 2003-07-17 | 2009-05-26 | Synztec Co., Ltd. | Method of manufacturing two-layer roll and method of manufacturing cylindrical member |
| US7638196B2 (en) | 2005-11-16 | 2009-12-29 | Synztec Co., Ltd. | Conductive rubber member |
| US7668484B2 (en) | 2006-04-28 | 2010-02-23 | Sharp Kabushiki Kaisha | Charging roller and image forming apparatus incorporating same |
| US7875331B2 (en) | 2005-11-01 | 2011-01-25 | Synztec Co., Ltd. | Conductive rubber member |
| US7922637B2 (en) | 2005-12-28 | 2011-04-12 | Synztec Co., Ltd. | Conductive roller |
| US8090295B2 (en) | 2007-04-04 | 2012-01-03 | Synztec Co., Ltd. | Conductive rubber member |
| JP2013050532A (en) * | 2011-08-30 | 2013-03-14 | Tokai Rubber Ind Ltd | Conductive roll |
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2001
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7537717B2 (en) | 2003-07-17 | 2009-05-26 | Synztec Co., Ltd. | Method of manufacturing two-layer roll and method of manufacturing cylindrical member |
| JP2006053544A (en) * | 2004-07-12 | 2006-02-23 | Hokushin Ind Inc | Electrifying roll and method for manufacturing the same |
| JP4533692B2 (en) * | 2004-07-27 | 2010-09-01 | 株式会社リコー | Development device and image forming apparatus having conductive member |
| JP2006039188A (en) * | 2004-07-27 | 2006-02-09 | Ricoh Co Ltd | Conductive member, developing apparatus equipped with same, and image forming apparatus |
| JP2006207807A (en) * | 2004-12-28 | 2006-08-10 | Hokushin Ind Inc | Conductive roll and inspection method therefor |
| JP2006267758A (en) * | 2005-03-25 | 2006-10-05 | Fuji Xerox Co Ltd | Image forming apparatus |
| JP2007039678A (en) * | 2005-07-08 | 2007-02-15 | Hokushin Ind Inc | Rubber member |
| US7875331B2 (en) | 2005-11-01 | 2011-01-25 | Synztec Co., Ltd. | Conductive rubber member |
| US7638196B2 (en) | 2005-11-16 | 2009-12-29 | Synztec Co., Ltd. | Conductive rubber member |
| US7922637B2 (en) | 2005-12-28 | 2011-04-12 | Synztec Co., Ltd. | Conductive roller |
| US7668484B2 (en) | 2006-04-28 | 2010-02-23 | Sharp Kabushiki Kaisha | Charging roller and image forming apparatus incorporating same |
| JP2008274262A (en) * | 2007-04-04 | 2008-11-13 | Synztec Co Ltd | Electroconductive rubber member |
| US8090295B2 (en) | 2007-04-04 | 2012-01-03 | Synztec Co., Ltd. | Conductive rubber member |
| JP2013050532A (en) * | 2011-08-30 | 2013-03-14 | Tokai Rubber Ind Ltd | Conductive roll |
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| JP3731734B2 (en) | 2006-01-05 |
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