JPS5550251A - Magnetic toner for electrostatic image development - Google Patents

Magnetic toner for electrostatic image development

Info

Publication number
JPS5550251A
JPS5550251A JP12355578A JP12355578A JPS5550251A JP S5550251 A JPS5550251 A JP S5550251A JP 12355578 A JP12355578 A JP 12355578A JP 12355578 A JP12355578 A JP 12355578A JP S5550251 A JPS5550251 A JP S5550251A
Authority
JP
Japan
Prior art keywords
magnetic toner
magnetic material
powder
molecular weight
low molecular
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.)
Granted
Application number
JP12355578A
Other languages
Japanese (ja)
Other versions
JPS598821B2 (en
Inventor
Fumio Koizumi
Kenji Tsujita
Masahiko Matsunawa
Makoto Tomono
Yuri Ishikawa
Tomoko Shimizu
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta 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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP53123555A priority Critical patent/JPS598821B2/en
Priority to GB7934263A priority patent/GB2034907B/en
Priority to DE19792940907 priority patent/DE2940907C2/en
Publication of JPS5550251A publication Critical patent/JPS5550251A/en
Publication of JPS598821B2 publication Critical patent/JPS598821B2/en
Expired 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
    • G03G9/0839—Treatment of the magnetic components; Combination of the magnetic components with non-magnetic materials
    • 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
    • G03G9/087—Binders for toner particles
    • G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • G03G9/08713—Polyvinylhalogenides
    • G03G9/0872—Polyvinylhalogenides containing fluorine
    • 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
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09733—Organic compounds
    • G03G9/09766—Organic compounds comprising fluorine

Abstract

PURPOSE: To enable the title magnetic toner to obtain an image low in fog and sufficiently high in density even under a high humidity atmosphere, by incorporating a magnetic material containing a low molecular weight fluorinated compound with a binder resin.
CONSTITUTION: A magnetic material powder, such as nickel, iron, or ferrite fine powder is immersed in the solution of a low molecular weight fluorine-containing surfactant, such as formla I, II, or III, to coat the powder with the fluorine-containing compound in an amount of about 0.01W1wt%. A magnetic toner is made by heat mixing the above treated magnetic material with a binder resin, such as styrene or acrylic resin and pulverizing the mixture after cooling, followed by coassifying to proper particle diameters.
COPYRIGHT: (C)1980,JPO&Japio
JP53123555A 1978-10-09 1978-10-09 Magnetic toner for developing electrostatic images Expired JPS598821B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP53123555A JPS598821B2 (en) 1978-10-09 1978-10-09 Magnetic toner for developing electrostatic images
GB7934263A GB2034907B (en) 1978-10-09 1979-10-03 Magnetic toner for electrostatic photography
DE19792940907 DE2940907C2 (en) 1978-10-09 1979-10-09 Electrostatographic magnetic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53123555A JPS598821B2 (en) 1978-10-09 1978-10-09 Magnetic toner for developing electrostatic images

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP58151507A Division JPS59131945A (en) 1983-08-22 1983-08-22 Formation of image

Publications (2)

Publication Number Publication Date
JPS5550251A true JPS5550251A (en) 1980-04-11
JPS598821B2 JPS598821B2 (en) 1984-02-27

Family

ID=14863490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53123555A Expired JPS598821B2 (en) 1978-10-09 1978-10-09 Magnetic toner for developing electrostatic images

Country Status (3)

Country Link
JP (1) JPS598821B2 (en)
DE (1) DE2940907C2 (en)
GB (1) GB2034907B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131945A (en) * 1983-08-22 1984-07-28 Konishiroku Photo Ind Co Ltd Formation of image
JPS604954A (en) * 1983-06-23 1985-01-11 Canon Inc Development method
JPH04214570A (en) * 1990-10-18 1992-08-05 Ricoh Co Ltd Electrostatic charge image developing toner

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1158090A (en) * 1980-10-28 1983-12-06 Minnesota Mining And Manufacturing Company One part magnetic toner powder including a fluoroaliphatic surface treatment composition
JPS58211159A (en) * 1982-06-02 1983-12-08 Konishiroku Photo Ind Co Ltd Magnetic toner
US4430408A (en) * 1982-06-25 1984-02-07 Minnesota Mining And Manufacturing Company Developing powder composition containing a fluorine-modified alkyl siloxane
JPS60182281U (en) * 1984-05-16 1985-12-03 スズキ株式会社 car drainage system
DE3837345A1 (en) * 1988-11-03 1990-05-10 Hoechst Ag USE OF COLORLESS HIGH GRADE FLUORATED AMMONIUM AND IMMONIUM COMPOUNDS AS LOADING AGENTS FOR ELECTROPHOTOGRAPHIC RECORDING METHODS
DE69322596T2 (en) * 1992-10-21 1999-07-15 Hewlett Packard Co Fluorocarbon lubricated toner particles for printers
EP0613059A1 (en) * 1993-02-22 1994-08-31 Nippon Paint Co., Ltd. Toner
WO2005076087A1 (en) * 2004-02-06 2005-08-18 Lg Chem, Ltd. Positive chargeable magnetic toner composition

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045639A (en) * 1973-08-27 1975-04-23
JPS51117638A (en) * 1975-03-20 1976-10-15 Pitney Bowes Inc Treatment of ion powder with perfluoroo comound
JPS52138932A (en) * 1976-05-17 1977-11-19 Ricoh Co Ltd Electrophotographic developer
JPS5320336A (en) * 1976-08-10 1978-02-24 Konishiroku Photo Ind Co Ltd Electrostatic image developing toner and its preparation
JPS5381124A (en) * 1976-12-27 1978-07-18 Hitachi Metals Ltd Magnetic toner particles for use in development
JPS5381125A (en) * 1976-12-27 1978-07-18 Ricoh Co Ltd Electrophotographic magnetic toner
JPS53107337A (en) * 1977-02-28 1978-09-19 Xerox Corp Toner composite for use in electrostatic photograph
JPS53124428A (en) * 1977-04-07 1978-10-30 Mita Industrial Co Ltd Developing agent for use in electrostatic image

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA986770A (en) * 1972-04-10 1976-04-06 Jack C. Goldfrank Pressure fixable magnetic toners

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045639A (en) * 1973-08-27 1975-04-23
JPS51117638A (en) * 1975-03-20 1976-10-15 Pitney Bowes Inc Treatment of ion powder with perfluoroo comound
JPS52138932A (en) * 1976-05-17 1977-11-19 Ricoh Co Ltd Electrophotographic developer
JPS5320336A (en) * 1976-08-10 1978-02-24 Konishiroku Photo Ind Co Ltd Electrostatic image developing toner and its preparation
JPS5381124A (en) * 1976-12-27 1978-07-18 Hitachi Metals Ltd Magnetic toner particles for use in development
JPS5381125A (en) * 1976-12-27 1978-07-18 Ricoh Co Ltd Electrophotographic magnetic toner
JPS53107337A (en) * 1977-02-28 1978-09-19 Xerox Corp Toner composite for use in electrostatic photograph
JPS53124428A (en) * 1977-04-07 1978-10-30 Mita Industrial Co Ltd Developing agent for use in electrostatic image

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604954A (en) * 1983-06-23 1985-01-11 Canon Inc Development method
JPS59131945A (en) * 1983-08-22 1984-07-28 Konishiroku Photo Ind Co Ltd Formation of image
JPH04214570A (en) * 1990-10-18 1992-08-05 Ricoh Co Ltd Electrostatic charge image developing toner

Also Published As

Publication number Publication date
GB2034907A (en) 1980-06-11
GB2034907B (en) 1982-11-10
DE2940907A1 (en) 1980-04-10
DE2940907C2 (en) 1983-08-25
JPS598821B2 (en) 1984-02-27

Similar Documents

Publication Publication Date Title
JPS55127569A (en) Carrier for electrostatic image development
JPS5586103A (en) High density magnetic recording unit
JPS5550251A (en) Magnetic toner for electrostatic image development
JPS5466134A (en) Magnetic brush development method
JPS55105253A (en) Magnetic developer and its preparation
JPS5468246A (en) Electrostatographic developer
JPS5387734A (en) Electrophotographic magnetic toner
JPS57151952A (en) Magnetic developer
JPS54107709A (en) Magnetic recording material
JPS5333152A (en) Dry developer agent
JPS5381125A (en) Electrophotographic magnetic toner
JPS5538524A (en) Toner composition for electrophotography
JPS55120041A (en) Magnetic developer
JPS5760340A (en) Development agent for one component electrostatic charge image
JPS5616145A (en) Magnetic toner
JPS54121744A (en) Dry type developing process in electrophotography
JPS5776558A (en) Developing method
JPS5752106A (en) Magnetic powder for magnetic recording
JPS5796353A (en) Two component system developer for magnetic brush development
JPS5572008A (en) Preparation of ferromagnetic powder
JPS54123956A (en) Dry type developer
JPS5451844A (en) Toner for electrostatic image development and production of the same
JPS5651755A (en) Magnetic particle for electrophotographic developer
JPS5684444A (en) Magnetic sintered material of small residual magnetic flux density
JPS55130547A (en) Static charge image developer