CA2677571C - Nanoparticules ferromagnetiques a anisotropie magnetocristalline elevee pour la reconnaissance de caracteres a encre magnetique - Google Patents

Nanoparticules ferromagnetiques a anisotropie magnetocristalline elevee pour la reconnaissance de caracteres a encre magnetique Download PDF

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Publication number
CA2677571C
CA2677571C CA2677571A CA2677571A CA2677571C CA 2677571 C CA2677571 C CA 2677571C CA 2677571 A CA2677571 A CA 2677571A CA 2677571 A CA2677571 A CA 2677571A CA 2677571 C CA2677571 C CA 2677571C
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CA
Canada
Prior art keywords
ink
magnetic
ink according
nanoparticles
emu
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 - Fee Related
Application number
CA2677571A
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English (en)
Other versions
CA2677571A1 (fr
Inventor
Marcel P. Breton
Richard P.N. Veregin
Karen A. Moffat
Peter M. Kazmaier
Patricia A. Burns
Paul F. Smith
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Xerox Corp
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Xerox 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 Xerox Corp filed Critical Xerox Corp
Priority to CA2677571A priority Critical patent/CA2677571C/fr
Publication of CA2677571A1 publication Critical patent/CA2677571A1/fr
Application granted granted Critical
Publication of CA2677571C publication Critical patent/CA2677571C/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • C09D11/32—Inkjet printing inks characterised by colouring agents
    • C09D11/322—Pigment inks
    • 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
    • G03G9/0831—Chemical composition of the magnetic components
    • G03G9/0832—Metals
    • 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
    • G03G9/0831—Chemical composition of the magnetic components
    • G03G9/0833—Oxides
    • 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
    • G03G9/0835—Magnetic parameters of the magnetic 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
    • G03G9/083—Magnetic toner particles
    • G03G9/0837—Structural characteristics of the magnetic components, e.g. shape, crystallographic structure
    • 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
    • G03G9/0838—Size of magnetic components

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

Une encre incluant des nanoparticules à cristal unique stabilisées magnétiquement, où la valeur de l'anisotropie magnétique des nanoparticules est supérieure ou égale à 2 fois 10 4 J/m3. La nanoparticule magnétique peut être une nanoparticule ferromagnétique comme le FePt. L'encre comprend un matériau magnétique qui minimise la taille de la particule ce qui permet d'avoir une dispersion du pigment magnétique et une stabilité de dispersion excellentes, en particulier pour les encres utilisées dans les jets d'encre non aqueux. Les petites particules d'encre maintiennent aussi d'excellentes propriétés magnétiques, ce qui réduit la quantité de particules magnétiques de chargement requise dans l'encre.
CA2677571A 2009-09-03 2009-09-03 Nanoparticules ferromagnetiques a anisotropie magnetocristalline elevee pour la reconnaissance de caracteres a encre magnetique Expired - Fee Related CA2677571C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2677571A CA2677571C (fr) 2009-09-03 2009-09-03 Nanoparticules ferromagnetiques a anisotropie magnetocristalline elevee pour la reconnaissance de caracteres a encre magnetique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2677571A CA2677571C (fr) 2009-09-03 2009-09-03 Nanoparticules ferromagnetiques a anisotropie magnetocristalline elevee pour la reconnaissance de caracteres a encre magnetique

Publications (2)

Publication Number Publication Date
CA2677571A1 CA2677571A1 (fr) 2011-03-03
CA2677571C true CA2677571C (fr) 2013-05-21

Family

ID=43646001

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2677571A Expired - Fee Related CA2677571C (fr) 2009-09-03 2009-09-03 Nanoparticules ferromagnetiques a anisotropie magnetocristalline elevee pour la reconnaissance de caracteres a encre magnetique

Country Status (1)

Country Link
CA (1) CA2677571C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120270146A1 (en) * 2011-04-20 2012-10-25 Xerox Corporation Magnetic toner compositions
CN113543616A (zh) * 2021-07-16 2021-10-22 中原工学院 一种空心核壳结构Fe3O4@SiO2@PANI吸波剂及制备方法

Also Published As

Publication number Publication date
CA2677571A1 (fr) 2011-03-03

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Effective date: 20210903