JPS6433563A - Carrier for developing electrostatic image - Google Patents

Carrier for developing electrostatic image

Info

Publication number
JPS6433563A
JPS6433563A JP62189834A JP18983487A JPS6433563A JP S6433563 A JPS6433563 A JP S6433563A JP 62189834 A JP62189834 A JP 62189834A JP 18983487 A JP18983487 A JP 18983487A JP S6433563 A JPS6433563 A JP S6433563A
Authority
JP
Japan
Prior art keywords
carrier
fluoroalkyl
meth
amt
triboelectric charge
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
JP62189834A
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 JP62189834A priority Critical patent/JPS6433563A/en
Priority to DE3825954A priority patent/DE3825954C2/en
Publication of JPS6433563A publication Critical patent/JPS6433563A/en
Priority to US07/485,844 priority patent/US4965159A/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
    • G03G9/1132—Macromolecular components of coatings
    • G03G9/1133—Macromolecular components of coatings obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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 over a long period by forming a triboelectric charge controlling layer contg. fluoroalkyl (meth)acrylate repeating units by a specified amt. or more of the amt. of the layer. CONSTITUTION:A carrier is obtd. by successively coating a core material with a layer of styrene-based resin and a triboelectric charge controlling layer contg. a fluoroalkyl (meth)acrylate-based polymer. The content of fluoroalkyl (meth) acrylate repeating units in the triboelectric charge controlling layer is regulated to >50wt.%, especially >55wt.%. In case of <=50wt.% content, the positive charge providing property of the carrier varies and toner particles may not be positively charged at all times. The amt. of triboelectric charge of a developer contg. the carrier may be reduced at the beginning of use and the positive charge providing property of the carrier may not be kept stable.
JP62189834A 1987-07-29 1987-07-29 Carrier for developing electrostatic image Pending JPS6433563A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP62189834A JPS6433563A (en) 1987-07-29 1987-07-29 Carrier for developing electrostatic image
DE3825954A DE3825954C2 (en) 1987-07-29 1988-07-29 Carrier particles for use in an electrophotographic developer
US07/485,844 US4965159A (en) 1987-07-29 1990-02-20 Carrier for developing electrostatic image, and developer for developing electrostatic latent image containing same carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62189834A JPS6433563A (en) 1987-07-29 1987-07-29 Carrier for developing electrostatic image

Publications (1)

Publication Number Publication Date
JPS6433563A true JPS6433563A (en) 1989-02-03

Family

ID=16247989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62189834A Pending JPS6433563A (en) 1987-07-29 1987-07-29 Carrier for developing electrostatic image

Country Status (1)

Country Link
JP (1) JPS6433563A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04114510U (en) * 1990-11-14 1992-10-08 月星化成株式会社 electrical resistant gloves

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04114510U (en) * 1990-11-14 1992-10-08 月星化成株式会社 electrical resistant gloves

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