EP0936507A3 - Black magnetic composite particles and black magnetic toner using the same - Google Patents

Black magnetic composite particles and black magnetic toner using the same Download PDF

Info

Publication number
EP0936507A3
EP0936507A3 EP99301117A EP99301117A EP0936507A3 EP 0936507 A3 EP0936507 A3 EP 0936507A3 EP 99301117 A EP99301117 A EP 99301117A EP 99301117 A EP99301117 A EP 99301117A EP 0936507 A3 EP0936507 A3 EP 0936507A3
Authority
EP
European Patent Office
Prior art keywords
black magnetic
iron oxide
composite particles
black
oxide particles
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.)
Withdrawn
Application number
EP99301117A
Other languages
German (de)
French (fr)
Other versions
EP0936507A2 (en
Inventor
Kazuyuki Hayashi
Hiroko Morii
Yasuyuki Tanaka
Seiji Ishitani
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.)
Toda Kogyo Corp
Original Assignee
Toda Kogyo 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 Toda Kogyo Corp filed Critical Toda Kogyo Corp
Publication of EP0936507A2 publication Critical patent/EP0936507A2/en
Publication of EP0936507A3 publication Critical patent/EP0936507A3/en
Priority to US10/073,043 priority Critical patent/US6562532B2/en
Priority to US10/141,959 priority patent/US6638675B2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G03G9/08742—Binders for toner particles comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • G03G9/08773—Polymers having silicon in the main chain, with or without sulfur, oxygen, nitrogen or carbon only
    • 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
    • G03G9/083—Magnetic toner particles
    • G03G9/0831—Chemical composition of the magnetic components
    • G03G9/0833—Oxides
    • 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
    • G03G9/083—Magnetic toner 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
    • G03G9/083—Magnetic toner particles
    • G03G9/0836—Other physical parameters of the magnetic components
    • 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
    • G03G9/083—Magnetic toner particles
    • G03G9/0838—Size of magnetic components
    • 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
    • G03G9/083—Magnetic toner particles
    • G03G9/0839—Treatment of the magnetic components; Combination of the magnetic components with non-magnetic materials
    • 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
    • G03G9/09—Colouring agents for toner particles
    • G03G9/0902—Inorganic compounds
    • 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
    • G03G9/09—Colouring agents for toner particles
    • G03G9/0902—Inorganic compounds
    • G03G9/0904—Carbon black
    • 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
    • G03G9/1138—Non-macromolecular organic components of coatings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

Black magnetic composite particles for a black magnetic toner comprising:
  • (a) magnetic iron oxide particles having an average particle diameter of from 0.055 to 0.95 µm;
  • (b) a coating on the surface of said magnetic iron oxide particles, comprising at least one organosilicon compound selected from:
  • (1) organosilane compounds obtainable by drying or heat-treating alkoxysilane compounds,
  • (2) polysiloxanes or modified polysiloxanes, and
  • (3) fluoroalkyl organosilane compounds obtainable by drying or heat-treating fluoroalkylsilane compounds; and
  • (c) carbon black fine particles adhered on at least a part of said coating, which have a particle size of from 0.002 to 0.05 µm and which are present in an amount of from 1 to 25 parts by weight per 100 parts by weight of said magnetic iron oxide particles.
    •
    EP99301117A 1998-02-17 1999-02-16 Black magnetic composite particles and black magnetic toner using the same Withdrawn EP0936507A3 (en)

    Priority Applications (2)

    Application Number Priority Date Filing Date Title
    US10/073,043 US6562532B2 (en) 1998-02-17 2002-02-12 Black magnetic toner and black magnetic composite particles therefor
    US10/141,959 US6638675B2 (en) 1998-02-17 2002-05-10 Black magnetic toner

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    JP5282698 1998-02-17
    JP5282698 1998-02-17

    Publications (2)

    Publication Number Publication Date
    EP0936507A2 EP0936507A2 (en) 1999-08-18
    EP0936507A3 true EP0936507A3 (en) 1999-11-17

    Family

    ID=12925667

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99301117A Withdrawn EP0936507A3 (en) 1998-02-17 1999-02-16 Black magnetic composite particles and black magnetic toner using the same

    Country Status (2)

    Country Link
    EP (1) EP0936507A3 (en)
    KR (1) KR100585399B1 (en)

    Families Citing this family (15)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6379855B1 (en) 1998-02-17 2002-04-30 Toda Kogyo Corporation Black magnetic toner and black magnetic composite particles therefor
    JP2001114522A (en) * 1999-08-11 2001-04-24 Toda Kogyo Corp Black-colored magnetic particle powder for highly resistant black-colored magnetic toner and highly resistant black-colored magnetic toner produced by using the particle powder
    US6294242B1 (en) 1998-05-15 2001-09-25 Toda Kogyo Corporation Magnetic recording medium
    EP0957474A1 (en) * 1998-05-15 1999-11-17 Toda Kogyo Corporation Magnetic recording medium
    EP0982715A1 (en) * 1998-08-28 2000-03-01 Toda Kogyo Corp. Black plate-shaped ferrite composite particles with magnetoplumbite structure and magnetic recording medium using the same
    US6531211B1 (en) 1998-08-28 2003-03-11 Toda Kogyo Corporation Black plate-shaped ferrite composite particles with magnet oplumbite structure and magnetic recording medium using the same
    EP1063639A1 (en) * 1999-06-24 2000-12-27 Toda Kogyo Corporation Magnetic composite particles for magnetic recording medium, process for producing the same and magnetic recording medium using the same
    US6863966B1 (en) * 1999-11-15 2005-03-08 Toda Kogyo Corporation Black magnetic acicular composite particles for magnetic recording medium and magnetic recording medium using the same
    US7122286B2 (en) * 2000-04-05 2006-10-17 Ricoh Company, Ltd. Toner for development of electrostatic latent images, method of forming images, image formation apparatus, toner container containing the toner therein, and image formation apparatus equipped with the toner container
    EP1168087A1 (en) * 2000-06-26 2002-01-02 Toda Kogyo Corporation Magnetic composite particles for black magnetic toner and black magnetic toner using the same
    JP4360589B2 (en) * 2000-10-20 2009-11-11 株式会社リコー Two-component developer, image forming apparatus using the same, and image forming method
    DE60123732T3 (en) * 2000-11-20 2013-11-07 Ricoh Co., Ltd. A toner for developing electrostatic images, an image forming method and an image forming apparatus
    US6821618B2 (en) 2000-12-22 2004-11-23 Toda Kogyo Corporation Magnetic recording medium and process for producing the same
    JP2006330277A (en) * 2005-05-25 2006-12-07 Fuji Xerox Co Ltd Carrier for electrostatic latent image developer and method for manufacturing the same, electrostatic latent image developer, and image forming apparatus
    KR102094296B1 (en) * 2018-07-05 2020-03-27 (주)제니스월드 Composition of Ceramic Paste with Black Color for Electrostatic Chuck and Electrostatic Chuck using thereof

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4620987A (en) * 1983-06-03 1986-11-04 Ricoh Company, Ltd. Surface treatment method for magnetic particles
    EP0373426A2 (en) * 1988-12-13 1990-06-20 Bayer Ag Inorganic pigments coated with polyorganosiloxane
    EP0439367A2 (en) * 1990-01-26 1991-07-31 Toda Kogyo Corp. Magnetic toner particles containing iron as the main component and process for producing the same
    EP0913431A2 (en) * 1997-10-31 1999-05-06 Toda Kogyo Corp. Black iron-based composite particles, process for producing the same, paint and rubber or resin composition containing the same

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4620987A (en) * 1983-06-03 1986-11-04 Ricoh Company, Ltd. Surface treatment method for magnetic particles
    EP0373426A2 (en) * 1988-12-13 1990-06-20 Bayer Ag Inorganic pigments coated with polyorganosiloxane
    EP0439367A2 (en) * 1990-01-26 1991-07-31 Toda Kogyo Corp. Magnetic toner particles containing iron as the main component and process for producing the same
    EP0913431A2 (en) * 1997-10-31 1999-05-06 Toda Kogyo Corp. Black iron-based composite particles, process for producing the same, paint and rubber or resin composition containing the same

    Also Published As

    Publication number Publication date
    EP0936507A2 (en) 1999-08-18
    KR19990072739A (en) 1999-09-27
    KR100585399B1 (en) 2006-05-30

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