JPS5770540A - Charging type magnetic toner - Google Patents

Charging type magnetic toner

Info

Publication number
JPS5770540A
JPS5770540A JP55146709A JP14670980A JPS5770540A JP S5770540 A JPS5770540 A JP S5770540A JP 55146709 A JP55146709 A JP 55146709A JP 14670980 A JP14670980 A JP 14670980A JP S5770540 A JPS5770540 A JP S5770540A
Authority
JP
Japan
Prior art keywords
toner
positive
negative
electrification
controller
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
JP55146709A
Other languages
Japanese (ja)
Inventor
Koji Noguchi
Masumi Asanae
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 JP55146709A priority Critical patent/JPS5770540A/en
Publication of JPS5770540A publication Critical patent/JPS5770540A/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
    • G03G9/09—Colouring agents for toner particles
    • G03G9/0906—Organic dyes

Landscapes

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

Abstract

PURPOSE:To obtain a toner having high developing power and fixability by sufficient electrification even in highly humid environment by dispersing magnetic toner with an electrification controller adsorbed on the surface in a toner. CONSTITUTION:A positive electrification controller such as oil black BY or SO or a negative electrification controller such as ''Valifast Blac 3804 '' is added to a dispersant such as n-hexane, and they are mixed with magnetic powder. This mixture is then mixed with a positive (negative) electrification type binder in case of the positive (negative) electrification controller, heated, kneaded, cooled, and pulverized to obtain a toner. A positive charging toner and a negative charging toner are used in case of an electrostatic latent image with negative polarity and a latent image with positive polarity, respectively. A copied image with sufficient image density is obtd. even at high humidity using this magnetic toner.
JP55146709A 1980-10-20 1980-10-20 Charging type magnetic toner Pending JPS5770540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55146709A JPS5770540A (en) 1980-10-20 1980-10-20 Charging type magnetic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55146709A JPS5770540A (en) 1980-10-20 1980-10-20 Charging type magnetic toner

Publications (1)

Publication Number Publication Date
JPS5770540A true JPS5770540A (en) 1982-05-01

Family

ID=15413761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55146709A Pending JPS5770540A (en) 1980-10-20 1980-10-20 Charging type magnetic toner

Country Status (1)

Country Link
JP (1) JPS5770540A (en)

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