JPS5764250A - Charge type magnetic toner - Google Patents

Charge type magnetic toner

Info

Publication number
JPS5764250A
JPS5764250A JP55140079A JP14007980A JPS5764250A JP S5764250 A JPS5764250 A JP S5764250A JP 55140079 A JP55140079 A JP 55140079A JP 14007980 A JP14007980 A JP 14007980A JP S5764250 A JPS5764250 A JP S5764250A
Authority
JP
Japan
Prior art keywords
positive
charge
charge type
negative
magnetic 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
JP55140079A
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 JP55140079A priority Critical patent/JPS5764250A/en
Publication of JPS5764250A publication Critical patent/JPS5764250A/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
    • G03G9/0825—Developers with toner particles characterised by their structure; characterised by non-homogenuous distribution of components
    • 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

Abstract

PURPOSE:To obtain a picture having a satisfactory picture quality, by sticking 2 or more kinds of positive and negarive charge type charge control agents, to the surface of a magnetic toner particle containing magnetic powder and binder. CONSTITUTION:2 or more kinds of positive and negative charge type charge control agents are stuck on the surface of a magnetic toner particle containing 30- 70wt% magnetic powder and 30-70wt% binder resin. 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 charge type and bari-fast black 3804, etc. are available. The particle diameter of the charge control agent is usually <=30mu, and <=10mu is desirable. Since the toner generates a part which is charged intensely with positive and negative, locally on its surface, a satisfactory picture is obtained in case of both positive charge type and negative charge type photosensitive bodies.
JP55140079A 1980-10-07 1980-10-07 Charge type magnetic toner Pending JPS5764250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55140079A JPS5764250A (en) 1980-10-07 1980-10-07 Charge type magnetic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55140079A JPS5764250A (en) 1980-10-07 1980-10-07 Charge type magnetic toner

Publications (1)

Publication Number Publication Date
JPS5764250A true JPS5764250A (en) 1982-04-19

Family

ID=15260466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55140079A Pending JPS5764250A (en) 1980-10-07 1980-10-07 Charge type magnetic toner

Country Status (1)

Country Link
JP (1) JPS5764250A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57196264A (en) * 1981-05-29 1982-12-02 Mita Ind Co Ltd One component type developer
JPS64573A (en) * 1987-02-17 1989-01-05 Minolta Camera Co Ltd Electrostatic latent image developing color toner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57196264A (en) * 1981-05-29 1982-12-02 Mita Ind Co Ltd One component type developer
EP0066470A2 (en) * 1981-05-29 1982-12-08 Mita Industrial Co. Ltd. One-component type developer for electrophotography
JPH0119579B2 (en) * 1981-05-29 1989-04-12 Mita Industrial Co Ltd
JPS64573A (en) * 1987-02-17 1989-01-05 Minolta Camera Co Ltd Electrostatic latent image developing color toner

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