JPS5764251A - Charge type magnetic toner - Google Patents

Charge type magnetic toner

Info

Publication number
JPS5764251A
JPS5764251A JP55140080A JP14008080A JPS5764251A JP S5764251 A JPS5764251 A JP S5764251A JP 55140080 A JP55140080 A JP 55140080A JP 14008080 A JP14008080 A JP 14008080A JP S5764251 A JPS5764251 A JP S5764251A
Authority
JP
Japan
Prior art keywords
control agent
charge
magnetic
magnetic powder
toner
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
JP55140080A
Other languages
Japanese (ja)
Inventor
Koji Noguchi
Masumi Asanae
Takaharu Goto
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP55140080A priority Critical patent/JPS5764251A/en
Publication of JPS5764251A publication Critical patent/JPS5764251A/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
    • G03G9/083—Magnetic toner particles

Landscapes

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

Abstract

PURPOSE:To obtain a satisfactory picture quality, by using a charge control agent having the same polarity, as that of a magnetic toner which contains magnetic powder, binder and a charge control agent, and is used by mixing 2 or more kinds of magnetic toners having different magnetic powder contents. CONSTITUTION:A charge control agent having a same polarity charge property is used as that of a magnetic toner which contains magnetic powder, binder resin and a charge control agent, and is used by mixing 2 or more kinds of magnetic toners having different magnetic powder contents (as for the quantity to be added, 5-50wt% magnetic powder content of a low magnetic force toner, 40-70wt% that of a high magnetic force toner). The charge control agent is roughly divided into metallic dyestuff of negative charge property and nigrosine compound dyestuff of positive charge property, and concretely speaking, oil black By, So of positive to use a control agent for negative charge in case of a positive charge type photosensitive body, and to use a control agent having the opposite polarity in case of ZnO, etc.
JP55140080A 1980-10-07 1980-10-07 Charge type magnetic toner Pending JPS5764251A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55140080A JPS5764251A (en) 1980-10-07 1980-10-07 Charge type magnetic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55140080A JPS5764251A (en) 1980-10-07 1980-10-07 Charge type magnetic toner

Publications (1)

Publication Number Publication Date
JPS5764251A true JPS5764251A (en) 1982-04-19

Family

ID=15260489

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55140080A Pending JPS5764251A (en) 1980-10-07 1980-10-07 Charge type magnetic toner

Country Status (1)

Country Link
JP (1) JPS5764251A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59157656A (en) * 1983-02-28 1984-09-07 Nippon Teppun Kk Carrier material for electrostatic image development
US5436102A (en) * 1992-09-14 1995-07-25 Olympus Optical Co., Ltd. Magnetic developing agent and electrophotographic apparatus using said agent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59157656A (en) * 1983-02-28 1984-09-07 Nippon Teppun Kk Carrier material for electrostatic image development
JPH0549982B2 (en) * 1983-02-28 1993-07-27 Nippon Tetsupun Kk
US5436102A (en) * 1992-09-14 1995-07-25 Olympus Optical Co., Ltd. Magnetic developing agent and electrophotographic apparatus using said agent

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