JPS56143446A - Coated carrier - Google Patents

Coated carrier

Info

Publication number
JPS56143446A
JPS56143446A JP4702880A JP4702880A JPS56143446A JP S56143446 A JPS56143446 A JP S56143446A JP 4702880 A JP4702880 A JP 4702880A JP 4702880 A JP4702880 A JP 4702880A JP S56143446 A JPS56143446 A JP S56143446A
Authority
JP
Japan
Prior art keywords
carrier
fog
resin
high density
density image
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
JP4702880A
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 JP4702880A priority Critical patent/JPS56143446A/en
Publication of JPS56143446A publication Critical patent/JPS56143446A/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

Abstract

PURPOSE:To obtain a high density image free from fog, etc. by coating a carrier with a resin contg. a polyoxyethylenealkylamine type surfactant to keep the resistance of the carrier low and enhance the endurance. CONSTITUTION:A 0.5-10pts.wt. surfactant such as octylamine of polyoxyethylene represented by the formula (where R is alkyl and n is an integer) and a 100pts.wt. coating resin such as styrene resin are dissolved in toluene or the like, and iron powder or the like as a carrier is dispersed in the soln. This dispersion is dried with a flow coater or the like to obtain a coated carrier. This carrier is then mixed with a toner to prepare a developer. This carrier has superior endurance, undergoes little reduction in the triboelectric charging property even by repeating copy >=200,000 times, and gives a high density image free from fog.
JP4702880A 1980-04-10 1980-04-10 Coated carrier Pending JPS56143446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4702880A JPS56143446A (en) 1980-04-10 1980-04-10 Coated carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4702880A JPS56143446A (en) 1980-04-10 1980-04-10 Coated carrier

Publications (1)

Publication Number Publication Date
JPS56143446A true JPS56143446A (en) 1981-11-09

Family

ID=12763718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4702880A Pending JPS56143446A (en) 1980-04-10 1980-04-10 Coated carrier

Country Status (1)

Country Link
JP (1) JPS56143446A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316882A (en) * 1991-08-16 1994-05-31 Eastman Kodak Company Ferrite green beads and method of producing carrier particles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52154639A (en) * 1976-06-18 1977-12-22 Ricoh Co Ltd Electrophotographic carrier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52154639A (en) * 1976-06-18 1977-12-22 Ricoh Co Ltd Electrophotographic carrier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316882A (en) * 1991-08-16 1994-05-31 Eastman Kodak Company Ferrite green beads and method of producing carrier particles

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