JPS5797605A - Magnetic fluid - Google Patents

Magnetic fluid

Info

Publication number
JPS5797605A
JPS5797605A JP55174024A JP17402480A JPS5797605A JP S5797605 A JPS5797605 A JP S5797605A JP 55174024 A JP55174024 A JP 55174024A JP 17402480 A JP17402480 A JP 17402480A JP S5797605 A JPS5797605 A JP S5797605A
Authority
JP
Japan
Prior art keywords
magnetic
active agent
surface active
radical
dispersion medium
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
JP55174024A
Other languages
Japanese (ja)
Inventor
Sanemori Soga
Keiichi Yubagami
Nobuo Sonoda
Wataru Shimoma
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55174024A priority Critical patent/JPS5797605A/en
Publication of JPS5797605A publication Critical patent/JPS5797605A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • H01F1/445—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a compound, e.g. Fe3O4

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Duplication Or Marking (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

PURPOSE:To enable to obtain easily a black or an arbitrary monochromatic picture by a method wherein a colored surface active agent is used as a suspension stabilizer to make magnetic corpuscles in a dispersion medium to be suspended. CONSTITUTION:The colored surface active agent is used as the suspension stabilizer to make the magnetic corpuscles in the dispersion medium to be suspended. The colored surface active agent is a compound being introduced a chromophore and an auxochrome in a surface active agent, being introduced a radical having high affinity with the magnetic corpuscle in a sort of dye and being substituted a radical having high affinity with the dispersion medium for the part being near molecular structurally in opposition to the introduced radical. Accordingly when a normal black record is needed, a black to generate nearly no change with time of color can be obtained. For a colored record, high bright red can be obtained by making high bright Zn composite ferrite as the base for the magnetic corpuscle.
JP55174024A 1980-12-09 1980-12-09 Magnetic fluid Pending JPS5797605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55174024A JPS5797605A (en) 1980-12-09 1980-12-09 Magnetic fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55174024A JPS5797605A (en) 1980-12-09 1980-12-09 Magnetic fluid

Publications (1)

Publication Number Publication Date
JPS5797605A true JPS5797605A (en) 1982-06-17

Family

ID=15971298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55174024A Pending JPS5797605A (en) 1980-12-09 1980-12-09 Magnetic fluid

Country Status (1)

Country Link
JP (1) JPS5797605A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61274737A (en) * 1985-05-21 1986-12-04 フエロフルイデイクス・コ−ポレイシヨン Stable ferro-fluid composition and its production and use

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50137207A (en) * 1974-04-15 1975-10-31
JPS5122688A (en) * 1974-12-18 1976-02-23 Juzo Kahanzaka

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50137207A (en) * 1974-04-15 1975-10-31
JPS5122688A (en) * 1974-12-18 1976-02-23 Juzo Kahanzaka

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61274737A (en) * 1985-05-21 1986-12-04 フエロフルイデイクス・コ−ポレイシヨン Stable ferro-fluid composition and its production and use

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