JPS5788459A - Carrier used for electrophotographic developer - Google Patents

Carrier used for electrophotographic developer

Info

Publication number
JPS5788459A
JPS5788459A JP55163387A JP16338780A JPS5788459A JP S5788459 A JPS5788459 A JP S5788459A JP 55163387 A JP55163387 A JP 55163387A JP 16338780 A JP16338780 A JP 16338780A JP S5788459 A JPS5788459 A JP S5788459A
Authority
JP
Japan
Prior art keywords
carrier
core material
resin
powder
superior
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
JP55163387A
Other languages
Japanese (ja)
Inventor
Naoyuki Ushiyama
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55163387A priority Critical patent/JPS5788459A/en
Publication of JPS5788459A publication Critical patent/JPS5788459A/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
    • G03G9/1135—Macromolecular components of coatings obtained otherwise than 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
    • G03G9/1132—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)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a carrier low in critical surface tension, superior in abrasion resistance, and capable of allowing a fine toner powder almost not to attach to the surface of the carrier, by coating its core material with a mixture of a fluoropolymer and a polyphenylene sulfide resin. CONSTITUTION:An aqueous dispersion of a resin mixture of polytetrafluoroethylene and polyphenylene sulfide is diluted with distilled water to make a 10-15% coating dispersion, which is coated on a carrier core material, such as iron powder or glass balls by air spraying it in a circulated fluidized bed in a ratio of 150-200cc per 1kg of the core material, and calcinating at about 330 deg.C for 15min in a hot air dryer to give a coated carrier. This carrier is superior in abrasion resistance and fluidity, and does not cause exposure of the core material and occurrence of resin powder, and permits an amount of toner to be made very little.
JP55163387A 1980-11-21 1980-11-21 Carrier used for electrophotographic developer Pending JPS5788459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55163387A JPS5788459A (en) 1980-11-21 1980-11-21 Carrier used for electrophotographic developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55163387A JPS5788459A (en) 1980-11-21 1980-11-21 Carrier used for electrophotographic developer

Publications (1)

Publication Number Publication Date
JPS5788459A true JPS5788459A (en) 1982-06-02

Family

ID=15772916

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55163387A Pending JPS5788459A (en) 1980-11-21 1980-11-21 Carrier used for electrophotographic developer

Country Status (1)

Country Link
JP (1) JPS5788459A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535047A (en) * 1983-04-04 1985-08-13 Allied Corporation Ferromagnetic amorphous metal carrier particles for electrophotographic toners
JPS63281173A (en) * 1987-05-14 1988-11-17 Ricoh Co Ltd Carrier for dry developer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535047A (en) * 1983-04-04 1985-08-13 Allied Corporation Ferromagnetic amorphous metal carrier particles for electrophotographic toners
JPS63281173A (en) * 1987-05-14 1988-11-17 Ricoh Co Ltd Carrier for dry developer

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