JPS6432268A - Carrier for electrostatic latent image developer - Google Patents

Carrier for electrostatic latent image developer

Info

Publication number
JPS6432268A
JPS6432268A JP62188375A JP18837587A JPS6432268A JP S6432268 A JPS6432268 A JP S6432268A JP 62188375 A JP62188375 A JP 62188375A JP 18837587 A JP18837587 A JP 18837587A JP S6432268 A JPS6432268 A JP S6432268A
Authority
JP
Japan
Prior art keywords
carrier
copolymer
layer
tetrafluoroethylene
vinylidene fluoride
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
JP62188375A
Other languages
Japanese (ja)
Inventor
Masanori Kouno
Kenji Tsujita
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP62188375A priority Critical patent/JPS6432268A/en
Publication of JPS6432268A publication Critical patent/JPS6432268A/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
    • G03G9/1131—Coating methods; Structure 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
    • G03G9/1132—Macromolecular components of coatings
    • G03G9/1133—Macromolecular components of coatings obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • G03G9/1134—Macromolecular components of coatings obtained by reactions only involving carbon-to-carbon unsaturated bonds containing fluorine atoms

Landscapes

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

Abstract

PURPOSE:To stabilize the positive charge providing property of a carrier by using a vinylidene fluoride.tetrafluoroethylene-based copolymer as a resin forming a triboelectric charge controlling layer as the top layer of the carrier. CONSTITUTION:This carrier for providing positive charges to a toner is obtd. by forming a triboelectric charge controlling layer contg. a vinylidene fluoride.tetrafluoroethylene-based copolymer on a core material with an intermediate layer in-between. The molar ratio between vinylidene fluoride repeating units and tetrafluoroethylene repeating units as constituent units of the copolymer is 75:25-95:5. The copolymer content of the controlling layer is >=70wt.% and the pref. amt. of the copolymer is >=0.2wt.% of the amt. of the core material. The intermediate layer is preferably a layer contg. >=50wt.% styrene-based copolymer.
JP62188375A 1987-07-28 1987-07-28 Carrier for electrostatic latent image developer Pending JPS6432268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62188375A JPS6432268A (en) 1987-07-28 1987-07-28 Carrier for electrostatic latent image developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62188375A JPS6432268A (en) 1987-07-28 1987-07-28 Carrier for electrostatic latent image developer

Publications (1)

Publication Number Publication Date
JPS6432268A true JPS6432268A (en) 1989-02-02

Family

ID=16222520

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62188375A Pending JPS6432268A (en) 1987-07-28 1987-07-28 Carrier for electrostatic latent image developer

Country Status (1)

Country Link
JP (1) JPS6432268A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018087853A (en) * 2016-11-28 2018-06-07 京セラドキュメントソリューションズ株式会社 Carrier for electrostatic latent image development, manufacturing method thereof, and two-ingredient developer
WO2023223921A1 (en) * 2022-05-19 2023-11-23 関東電化工業株式会社 Electrophotographic carrier and two-component developer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018087853A (en) * 2016-11-28 2018-06-07 京セラドキュメントソリューションズ株式会社 Carrier for electrostatic latent image development, manufacturing method thereof, and two-ingredient developer
WO2023223921A1 (en) * 2022-05-19 2023-11-23 関東電化工業株式会社 Electrophotographic carrier and two-component developer

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