JPS56143448A - Carrier for electrophotographic developer - Google Patents

Carrier for electrophotographic developer

Info

Publication number
JPS56143448A
JPS56143448A JP4703280A JP4703280A JPS56143448A JP S56143448 A JPS56143448 A JP S56143448A JP 4703280 A JP4703280 A JP 4703280A JP 4703280 A JP4703280 A JP 4703280A JP S56143448 A JPS56143448 A JP S56143448A
Authority
JP
Japan
Prior art keywords
carrier
pigment
coated
toner
component developer
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
JP4703280A
Other languages
Japanese (ja)
Inventor
Tatsuo Miyamae
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP4703280A priority Critical patent/JPS56143448A/en
Publication of JPS56143448A publication Critical patent/JPS56143448A/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
    • G03G9/1138—Non-macromolecular organic components of coatings

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a carrier fit for high-speed copy, having a long life and giving a dense image even by low-potential development by coating the surface of a carrier for a dry two-component developer with a specified amount of phthalocyanine pigment. CONSTITUTION:By agitating and mixing 100pts.wt. iron powder or the like of 250-400 mesh as a carrier and 0.01-2pts.wt. phthalocyanine pigment by means of a tumbler agitator or the like, the surface of the carrier is coated with powder of said pigment by dispersion. This coated carrier is mixed with toner contg. polystyrene resin, a pigment such as carbon black and a dye such as nigrosine to prepare a two-component developer. This developer gives an image of high quality even after repeating endurance tests >=100,000 times, and the carrier is hardly polluted by the toner and undergoes little reduction in the triboelectric charging property.
JP4703280A 1980-04-10 1980-04-10 Carrier for electrophotographic developer Pending JPS56143448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4703280A JPS56143448A (en) 1980-04-10 1980-04-10 Carrier for electrophotographic developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4703280A JPS56143448A (en) 1980-04-10 1980-04-10 Carrier for electrophotographic developer

Publications (1)

Publication Number Publication Date
JPS56143448A true JPS56143448A (en) 1981-11-09

Family

ID=12763829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4703280A Pending JPS56143448A (en) 1980-04-10 1980-04-10 Carrier for electrophotographic developer

Country Status (1)

Country Link
JP (1) JPS56143448A (en)

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