COMPOSITION AND METHOD OF MAKING NIR-TO-VISIBLE UPCONVERSION INKJET INKS

An upconverting pigment dispersion includes an upconverting pigment, such as a β-NaYF4 crystal doped with at least one of Erbium, Ytterbium or Thulium. The upconverting pigment dispersion is aqueous. Upconverting inkjet ink is made by mixing the crystals with a polymer dispersant and water and milli...

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Bibliographic Details
Main Authors CAI, Xiaorong, RILEY, Michael R
Format Patent
LanguageEnglish
French
German
Published 21.11.2018
Subjects
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
COLOUR PRINTING
CORRECTING FLUIDS
DYES
FILLING PASTES
INKS
LINING MACHINES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
PERFORMING OPERATIONS
POLISHES
PRINTING
PRINTING MACHINES OR PRESSES
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
STAMPS
TRANSPORTING
TYPEWRITERS
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:An upconverting pigment dispersion includes an upconverting pigment, such as a β-NaYF4 crystal doped with at least one of Erbium, Ytterbium or Thulium. The upconverting pigment dispersion is aqueous. Upconverting inkjet ink is made by mixing the crystals with a polymer dispersant and water and milling the mixture until the crystal particles are between 50 nanometers and 200 nanometers. Deionized water, a colorant and a humectant are added to the milled mixture.
Bibliography:Application Number: EP20160796858