GB857820A - Improvements in or relating to printing ink - Google Patents

Improvements in or relating to printing ink

Info

Publication number
GB857820A
GB857820A GB34861/59A GB3486159A GB857820A GB 857820 A GB857820 A GB 857820A GB 34861/59 A GB34861/59 A GB 34861/59A GB 3486159 A GB3486159 A GB 3486159A GB 857820 A GB857820 A GB 857820A
Authority
GB
United Kingdom
Prior art keywords
iron oxide
varnish
lithographic
active agent
surface active
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
GB34861/59A
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.)
AB Dick Co
Original Assignee
AB Dick Co
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 AB Dick Co filed Critical AB Dick Co
Publication of GB857820A publication Critical patent/GB857820A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

Magnetic inks are prepared from 20-60% lithographic vehicle, 20-75% magnetic iron oxide, 0-20% of a toner and 0-15% of a surface active agent, all percentages being by weight. Lithographic vehicles specified include linseed modified phenol formaldehyde varnish, maleicalkyd varnish and pentareythritol alkyd varnish used either alone or admixed with linseed oil (see also Group XV). Acicular iron oxide is exemplified as a magnetic iron oxide to be used and suitable toners are carbon black, lamp black, alkali blue and iron blue. The preferred surface active agent is soya bean lecithin.
GB34861/59A 1958-10-14 1959-10-14 Improvements in or relating to printing ink Expired GB857820A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US857820XA 1958-10-14 1958-10-14

Publications (1)

Publication Number Publication Date
GB857820A true GB857820A (en) 1961-01-04

Family

ID=22193898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34861/59A Expired GB857820A (en) 1958-10-14 1959-10-14 Improvements in or relating to printing ink

Country Status (1)

Country Link
GB (1) GB857820A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0464474A2 (en) * 1990-06-22 1992-01-08 MANTEGAZZA ANTONIO ARTI GRAFICHE S.r.l. Delible magnetic ink and process for making the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0464474A2 (en) * 1990-06-22 1992-01-08 MANTEGAZZA ANTONIO ARTI GRAFICHE S.r.l. Delible magnetic ink and process for making the same
EP0464474A3 (en) * 1990-06-22 1993-04-21 Mantegazza Antonio Arti Grafiche S.R.L. Delible magnetic ink and process for making the same

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