WO2008120637A1 - 電子写真現像剤用キャリア芯材およびその製造方法、電子写真現像剤用キャリア、並びに、電子写真現像剤 - Google Patents

電子写真現像剤用キャリア芯材およびその製造方法、電子写真現像剤用キャリア、並びに、電子写真現像剤 Download PDF

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Publication number
WO2008120637A1
WO2008120637A1 PCT/JP2008/055738 JP2008055738W WO2008120637A1 WO 2008120637 A1 WO2008120637 A1 WO 2008120637A1 JP 2008055738 W JP2008055738 W JP 2008055738W WO 2008120637 A1 WO2008120637 A1 WO 2008120637A1
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WO
WIPO (PCT)
Prior art keywords
developing agent
carrier
core material
elctrophotographic
less
Prior art date
Application number
PCT/JP2008/055738
Other languages
English (en)
French (fr)
Inventor
Tomoya Yamada
Isao Fujita
Yoshiaki Aiki
Original Assignee
Dowa Electronics Materials Co., Ltd.
Dowa Ip Creation Co., Ltd.
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 Dowa Electronics Materials Co., Ltd., Dowa Ip Creation Co., Ltd. filed Critical Dowa Electronics Materials Co., Ltd.
Priority to EP08738926.8A priority Critical patent/EP2133750B1/en
Priority to US12/450,090 priority patent/US8343453B2/en
Priority to CN2008800107764A priority patent/CN101652721B/zh
Publication of WO2008120637A1 publication Critical patent/WO2008120637A1/ja

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/0802—Preparation methods
    • G03G9/0804—Preparation methods whereby the components are brought together in a liquid dispersing medium
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/0802—Preparation methods
    • G03G9/0815—Post-treatment
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/0819—Developers with toner particles characterised by the dimensions of the particles
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/087—Binders for toner particles
    • G03G9/08775—Natural macromolecular compounds or derivatives thereof
    • G03G9/08782—Waxes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/1075—Structural characteristics of the carrier particles, e.g. shape or crystallographic structure
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/108—Ferrite carrier, e.g. magnetite
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/108—Ferrite carrier, e.g. magnetite
    • G03G9/1085—Ferrite carrier, e.g. magnetite with non-ferrous metal oxide, e.g. MgO-Fe2O3
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
    • G03G9/1132—Macromolecular components of coatings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

流動性が良好であるだけでなく、帯電付与に必要な適切な表面凹凸を有し、かつ長時間にわたる攪拌ストレスの影響下でも粒子の割れ・欠けが発生しない二成分系電子写真用現像剤用キャリアを提供する。 粒子表面に、互いに重なり合いながら複数方向にほぼ連続的に延びる縞模様状の隆起部分を有し、縞模様状の隆起部分が形成された表面が、粒子全表面の８０％以上を占める。隣接する隆起部分間の溝の深さが０．０５μｍ以上０．２μｍ以下であり、平均表面粗さＲａが０．１μｍ以上０．３μｍ以下であり、円形度が０．９０以上、平均粒径が１５μｍ以上１００μｍ以下であるキャリア芯材に樹脂コートをおこなって二成分系電子写真用現像剤用キャリアとする。 
PCT/JP2008/055738 2007-03-30 2008-03-26 電子写真現像剤用キャリア芯材およびその製造方法、電子写真現像剤用キャリア、並びに、電子写真現像剤 WO2008120637A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08738926.8A EP2133750B1 (en) 2007-03-30 2008-03-26 Carrier core material for elctrophotographic developing agent, process for producing the core material, carrier for elctrophotographic developing agent, and electrophotographic developing agent.
US12/450,090 US8343453B2 (en) 2007-03-30 2008-03-26 Carrier core material for electrophotographic developer and method for producing the same, carrier for electrophotographic developer, and electrophotographic developer
CN2008800107764A CN101652721B (zh) 2007-03-30 2008-03-26 电子照相显影剂用载体芯材及其制造方法、电子照相显影剂用载体以及电子照相显影剂

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007094537A JP5086681B2 (ja) 2007-03-30 2007-03-30 電子写真現像剤用キャリア芯材およびその製造方法、電子写真現像剤用キャリア、並びに、電子写真現像剤
JP2007-094537 2007-03-30

Publications (1)

Publication Number Publication Date
WO2008120637A1 true WO2008120637A1 (ja) 2008-10-09

Family

ID=39808219

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/055738 WO2008120637A1 (ja) 2007-03-30 2008-03-26 電子写真現像剤用キャリア芯材およびその製造方法、電子写真現像剤用キャリア、並びに、電子写真現像剤

Country Status (6)

Country Link
US (1) US8343453B2 (ja)
EP (1) EP2133750B1 (ja)
JP (1) JP5086681B2 (ja)
KR (1) KR101376871B1 (ja)
CN (1) CN101652721B (ja)
WO (1) WO2008120637A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015212788A (ja) * 2014-05-07 2015-11-26 キヤノン株式会社 二成分系現像剤

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5298481B2 (ja) * 2006-09-14 2013-09-25 コニカミノルタ株式会社 キャリアの製造方法
JP2009103782A (ja) * 2007-10-22 2009-05-14 Konica Minolta Business Technologies Inc 静電潜像現像用キャリア、その製造方法、２成分現像剤及び画像形成方法
JP5394795B2 (ja) * 2009-03-31 2014-01-22 Ｄｏｗａエレクトロニクス株式会社 電子写真現像剤用キャリア芯材および電子写真現像剤用キャリア並びに電子写真現像剤
JP5630601B2 (ja) 2009-06-04 2014-11-26 戸田工業株式会社 電子写真現像剤用磁性キャリア及びその製造方法、並びに二成分系現像剤
KR101385351B1 (ko) * 2010-01-29 2014-04-14 도와 아이피 크리에이션 가부시키가이샤 전자 사진 현상제용 캐리어 심재, 그 제조 방법, 전자 사진 현상제용 캐리어, 및 전자 사진 현상제
JP5377386B2 (ja) 2010-03-29 2013-12-25 Ｄｏｗａエレクトロニクス株式会社 電子写真現像剤用キャリア芯材、その製造方法、電子写真現像剤用キャリア、および電子写真現像剤
EP2555056B1 (en) 2010-03-31 2017-01-25 DOWA Electronics Materials Co., Ltd. Carrier core material for electrophotographic developing agent, carrier for electrophotographic developing agent, and electrophotographic developing agent
JP5977924B2 (ja) 2011-03-16 2016-08-24 Ｄｏｗａエレクトロニクス株式会社 電子写真現像剤用キャリア芯材の製造方法、電子写真現像剤用キャリアの製造方法、および電子写真現像剤の製造方法
JP6978051B2 (ja) 2017-11-29 2021-12-08 パウダーテック株式会社 電子写真現像剤用フェライトキャリア芯材、電子写真現像剤用キャリア及び現像剤

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10104884A (ja) * 1996-08-06 1998-04-24 Hitachi Metals Ltd 電子写真現像用フェライトキャリア
JP2001290311A (ja) * 1999-07-28 2001-10-19 Ricoh Co Ltd 電子写真用キャリアの被覆樹脂と磁性体を分離する方法及びリサイクル方法及びその装置
JP2006337828A (ja) 2005-06-03 2006-12-14 Powdertech Co Ltd 電子写真用フェライトキャリア芯材、電子写真用フェライトキャリア及びこれらの製造方法、並びに該フェライトキャリアを用いた電子写真用現像剤
WO2007063933A1 (ja) * 2005-11-30 2007-06-07 Powdertech Co., Ltd. 電子写真現像剤用樹脂コートフェライトキャリア及びその製造方法、並びに該樹脂コートフェライトキャリアを用いた電子写真現像剤

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4855205A (en) * 1988-08-05 1989-08-08 Eastman Kodak Company Interdispersed two-phase ferrite composite and carrier therefrom
JPH02223962A (ja) * 1989-02-23 1990-09-06 Nippon Steel Corp マグネタイトキャリア粒子及びその製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10104884A (ja) * 1996-08-06 1998-04-24 Hitachi Metals Ltd 電子写真現像用フェライトキャリア
JP2001290311A (ja) * 1999-07-28 2001-10-19 Ricoh Co Ltd 電子写真用キャリアの被覆樹脂と磁性体を分離する方法及びリサイクル方法及びその装置
JP2006337828A (ja) 2005-06-03 2006-12-14 Powdertech Co Ltd 電子写真用フェライトキャリア芯材、電子写真用フェライトキャリア及びこれらの製造方法、並びに該フェライトキャリアを用いた電子写真用現像剤
WO2007063933A1 (ja) * 2005-11-30 2007-06-07 Powdertech Co., Ltd. 電子写真現像剤用樹脂コートフェライトキャリア及びその製造方法、並びに該樹脂コートフェライトキャリアを用いた電子写真現像剤

Non-Patent Citations (1)

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Title
See also references of EP2133750A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015212788A (ja) * 2014-05-07 2015-11-26 キヤノン株式会社 二成分系現像剤

Also Published As

Publication number Publication date
CN101652721B (zh) 2013-01-16
EP2133750A4 (en) 2011-04-20
US8343453B2 (en) 2013-01-01
EP2133750A1 (en) 2009-12-16
CN101652721A (zh) 2010-02-17
EP2133750B1 (en) 2014-03-05
KR20090127943A (ko) 2009-12-14
KR101376871B1 (ko) 2014-03-20
US20100086869A1 (en) 2010-04-08
JP5086681B2 (ja) 2012-11-28
JP2008250214A (ja) 2008-10-16

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