JPS6429864A - Carrier for developing electrostatic latent image - Google Patents

Carrier for developing electrostatic latent image

Info

Publication number
JPS6429864A
JPS6429864A JP62186292A JP18629287A JPS6429864A JP S6429864 A JPS6429864 A JP S6429864A JP 62186292 A JP62186292 A JP 62186292A JP 18629287 A JP18629287 A JP 18629287A JP S6429864 A JPS6429864 A JP S6429864A
Authority
JP
Japan
Prior art keywords
particles
carrier
electrostatic charge
polymer
fine
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.)
Pending
Application number
JP62186292A
Other languages
Japanese (ja)
Inventor
Makoto Kobayashi
Shuntaro Kori
Masahiro Yasuno
Yukio Tanigami
Junji Machida
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP62186292A priority Critical patent/JPS6429864A/en
Publication of JPS6429864A publication Critical patent/JPS6429864A/en
Pending 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
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
    • G03G9/1139—Inorganic components of coatings
    • 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
    • G03G9/1138—Non-macromolecular organic components of coatings

Landscapes

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

Abstract

PURPOSE:To provide a carrier which has high electric resistance, stable triboelectrostatic charge quantity and partial electrical conductivity and has excellent durability as well by coating the surface of carrier core particles with polymer particles contg. magnetic powder and electrostatic charge control agent and fixing the same to the core particles. CONSTITUTION:The coating layer is formed on the carrier core particles by coating the particles with the subsidiary particles consisting of the polymer contg. the fine magnetic powder particle and the electrostatic charge control agent. For example, the subsidiary particles consisting of the fine particles are prepd. by adding the magnetic powder, the electrostatic charge control agent and polymer thoroughly mixing the mixture and grinding the same. The fine polymer particles are stuck to the surfaces of the carrier core to form the coating layer of the fine particles thereon. The subsidiary particles are melted and fixed to the core surface by heating. The carrier obtd. in such a manner has the high electric resistance and partially adequate electrical conductivity and, therefore, the carrier has stable triboelectrostatic chargeability. The accumulation of electric charge is not generated even if the carrier is used for a long period of time. The stable electrostatic charge quantity is thus imparted to a toner.
JP62186292A 1987-07-24 1987-07-24 Carrier for developing electrostatic latent image Pending JPS6429864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62186292A JPS6429864A (en) 1987-07-24 1987-07-24 Carrier for developing electrostatic latent image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62186292A JPS6429864A (en) 1987-07-24 1987-07-24 Carrier for developing electrostatic latent image

Publications (1)

Publication Number Publication Date
JPS6429864A true JPS6429864A (en) 1989-01-31

Family

ID=16185761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62186292A Pending JPS6429864A (en) 1987-07-24 1987-07-24 Carrier for developing electrostatic latent image

Country Status (1)

Country Link
JP (1) JPS6429864A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5409518A (en) * 1990-11-09 1995-04-25 Kabushiki Kaisha Toyota Chuo Kenkyusho Sintered powdered titanium alloy and method of producing the same
US6117204A (en) * 1997-09-16 2000-09-12 Kabushiki Kaisha Toyota Chuo Kenkyusho Sintered titanium alloy material and process for producing the same
JP2011237823A (en) * 2011-07-11 2011-11-24 Sharp Corp Resin layer coated carrier and developer
CN102385269A (en) * 2010-09-06 2012-03-21 佳能株式会社 Magnetic carrier and dual-component developer
US8399171B2 (en) 2009-06-02 2013-03-19 Sharp Kabushiki Kaisha Method of manufacturing resin-layer coated carrier, resin-layer coated carrier, developer, developing device, and image forming apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5409518A (en) * 1990-11-09 1995-04-25 Kabushiki Kaisha Toyota Chuo Kenkyusho Sintered powdered titanium alloy and method of producing the same
US6117204A (en) * 1997-09-16 2000-09-12 Kabushiki Kaisha Toyota Chuo Kenkyusho Sintered titanium alloy material and process for producing the same
US8399171B2 (en) 2009-06-02 2013-03-19 Sharp Kabushiki Kaisha Method of manufacturing resin-layer coated carrier, resin-layer coated carrier, developer, developing device, and image forming apparatus
CN102385269A (en) * 2010-09-06 2012-03-21 佳能株式会社 Magnetic carrier and dual-component developer
JP2011237823A (en) * 2011-07-11 2011-11-24 Sharp Corp Resin layer coated carrier and developer

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