GB1478088A - Magnetic inks - Google Patents

Magnetic inks

Info

Publication number
GB1478088A
GB1478088A GB2187275A GB2187275A GB1478088A GB 1478088 A GB1478088 A GB 1478088A GB 2187275 A GB2187275 A GB 2187275A GB 2187275 A GB2187275 A GB 2187275A GB 1478088 A GB1478088 A GB 1478088A
Authority
GB
United Kingdom
Prior art keywords
magnetic inks
magnetic
dispersion
proportion
water
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.)
Expired
Application number
GB2187275A
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1478088A publication Critical patent/GB1478088A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • H01F41/16—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates the magnetic material being applied in the form of particles, e.g. by serigraphy, to form thick magnetic films or precursors therefor
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Wet Developing In Electrophotography (AREA)
  • Soft Magnetic Materials (AREA)
  • Paints Or Removers (AREA)

Abstract

The magnetic ink consists of a dispersion of magnetic particles in water with a proportion of a non-ionic wetting agent and a cationic surface-active substance.
GB2187275A 1974-08-23 1975-05-21 Magnetic inks Expired GB1478088A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49995674A 1974-08-23 1974-08-23

Publications (1)

Publication Number Publication Date
GB1478088A true GB1478088A (en) 1977-06-29

Family

ID=23987457

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2187275A Expired GB1478088A (en) 1974-08-23 1975-05-21 Magnetic inks

Country Status (14)

Country Link
JP (1) JPS5618035B2 (en)
AR (1) AR206932A1 (en)
AU (1) AU496896B2 (en)
BE (1) BE831315A (en)
BR (1) BR7505392A (en)
CA (1) CA1062854A (en)
CH (1) CH614553A5 (en)
DE (1) DE2529053C2 (en)
ES (1) ES439588A1 (en)
FR (1) FR2282460B1 (en)
GB (1) GB1478088A (en)
IT (1) IT1041765B (en)
NL (1) NL7507910A (en)
SE (1) SE422808B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461521A1 (en) * 1979-07-20 1981-02-06 Anvar MAGNETIC FLUIDS, IN PARTICULAR FERROFLUIDS, AND PROCESS FOR OBTAINING THEM
JPS6062238U (en) * 1983-10-04 1985-05-01 ヤンマー農機株式会社 Bundling device of straw binding machine
JPS6099178A (en) * 1983-11-01 1985-06-03 Mitsubishi Electric Corp Material for writing utensil
JPH07116399B2 (en) * 1986-08-15 1995-12-13 株式会社リコー Aqueous ink composition

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471415A (en) * 1966-12-20 1969-10-07 Honora Friedman Magnetic inks containing lecithin as a surfactant
US3531413A (en) * 1967-09-22 1970-09-29 Avco Corp Method of substituting one ferrofluid solvent for another
US3764540A (en) * 1971-05-28 1973-10-09 Us Interior Magnetofluids and their manufacture

Also Published As

Publication number Publication date
ES439588A1 (en) 1977-02-16
JPS5618035B2 (en) 1981-04-25
AU8425275A (en) 1977-03-03
DE2529053C2 (en) 1982-06-03
AU496896B2 (en) 1978-11-09
CA1062854A (en) 1979-09-25
NL7507910A (en) 1976-02-25
FR2282460B1 (en) 1977-07-22
BE831315A (en) 1975-11-03
SE7509333L (en) 1976-02-24
DE2529053A1 (en) 1976-03-04
CH614553A5 (en) 1979-11-30
AR206932A1 (en) 1976-08-31
JPS5137705A (en) 1976-03-30
SE422808B (en) 1982-03-29
IT1041765B (en) 1980-01-10
FR2282460A1 (en) 1976-03-19
BR7505392A (en) 1976-08-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee