JP4807985B2 - 帯電ローラの製造方法 - Google Patents
帯電ローラの製造方法 Download PDFInfo
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- JP4807985B2 JP4807985B2 JP2005253851A JP2005253851A JP4807985B2 JP 4807985 B2 JP4807985 B2 JP 4807985B2 JP 2005253851 A JP2005253851 A JP 2005253851A JP 2005253851 A JP2005253851 A JP 2005253851A JP 4807985 B2 JP4807985 B2 JP 4807985B2
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- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Rolls And Other Rotary Bodies (AREA)
Description
ーラを製造するにあたり、品質の安定した帯電ローラを得ることができる帯電ローラの製
造方法を提供することにある。
前記下塗層中の導電剤の配合量を基材100重量部に対し10〜30重量部の範囲で、前記表層中の導電剤の配合量を基材100重量部に対し20〜30重量部の範囲で、それぞれ変更することにより、前記下塗層形成時の抵抗値R0および最終的なローラ抵抗値Rを、回転するローラに対しAC電圧Vpp=500V(f=380Hz)とDC電圧−200Vとを同時に印加した状態で、電流500〜1500μAの範囲において、該最終的なローラ抵抗値Rと下塗層形成時の抵抗値R0との比R0/Rが0.57<R0/R<1.10の関係を満足するよう調整することを特徴とするものである。
を用い、かつ、前記表層の導電剤としてカーボン系導電剤を用いることが好ましい。
本発明は、被帯電体に当接させて、被帯電体との間に電圧を印加することによりこれを帯電させる帯電ローラであって、弾性層上に、導電剤を含む下塗層および表層が順次設けられてなる帯電ローラの製造方法であり、下塗層形成時の抵抗値R0および最終的なローラ抵抗値R(以下、それぞれ「中間抵抗値R0」および「最終抵抗値R」と称する)を、下記のようにして調整する点に特徴を有する。
弾性層上に1層の下塗層と表層とを備える帯電ローラを、夫々、下塗層および表層の体積抵抗値を変えて作製した。具体的には、良導電性のシャフトにポリウレタン発泡体を弾性層として被覆したものに、アクリル変性エマルジョン(AE322、JSR社製)に導電剤としてのカーボンブラックを分散させた塗料を下塗層として被覆し、さらに、フッ素樹脂(LF200、旭硝子(株)製)に導電剤としてのカーボンブラックを分散させたものを表層として塗布して、帯電ローラを得た。
2 電源
3 パルス発信機
10 帯電ローラ
Claims (2)
- 被帯電体に当接させて、該被帯電体との間に電圧を印加することにより該被帯電体を帯電させる帯電ローラであって、弾性層上に、導電剤を含む下塗層および表層が順次設けられてなる帯電ローラの製造方法において、
前記下塗層中の導電剤の配合量を基材100重量部に対し10〜30重量部の範囲で、前記表層中の導電剤の配合量を基材100重量部に対し20〜30重量部の範囲で、それぞれ変更することにより、前記下塗層形成時の抵抗値R0 および最終的なローラ抵抗値Rを、回転するローラに対しAC電圧Vpp=500V(f=380Hz)とDC電圧−200Vとを同時に印加した状態で、電流500〜1500μAの範囲において、該最終的なローラ抵抗値Rと下塗層形成時の抵抗値R 0 との比R 0 /Rが0.57<R0/R<1.10の関係を満足するよう調整することを特徴とする帯電ローラの製造方法。 - 前記下塗層の導電剤としてカーボン系導電剤またはイオン系導電剤を用い、かつ、前記表層の導電剤としてカーボン系導電剤を用いる請求項1記載の帯電ローラの製造方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005253851A JP4807985B2 (ja) | 2005-09-01 | 2005-09-01 | 帯電ローラの製造方法 |
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JP2005253851A JP4807985B2 (ja) | 2005-09-01 | 2005-09-01 | 帯電ローラの製造方法 |
Publications (2)
Publication Number | Publication Date |
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JP2007065492A JP2007065492A (ja) | 2007-03-15 |
JP4807985B2 true JP4807985B2 (ja) | 2011-11-02 |
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JP2005253851A Expired - Fee Related JP4807985B2 (ja) | 2005-09-01 | 2005-09-01 | 帯電ローラの製造方法 |
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Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3116537B2 (ja) * | 1992-03-23 | 2000-12-11 | 東海ゴム工業株式会社 | 現像ロール |
JPH1152679A (ja) * | 1997-08-04 | 1999-02-26 | Ricoh Co Ltd | 帯電装置 |
JP2002214880A (ja) * | 2001-01-12 | 2002-07-31 | Bridgestone Corp | 帯電部材及び帯電装置 |
JP2003223028A (ja) * | 2002-01-29 | 2003-08-08 | Tokai Rubber Ind Ltd | 電子写真機器用導電部材 |
JP3998192B2 (ja) * | 2003-02-12 | 2007-10-24 | 株式会社ブリヂストン | 帯電ローラおよびそれを用いた帯電装置 |
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- 2005-09-01 JP JP2005253851A patent/JP4807985B2/ja not_active Expired - Fee Related
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