Pigment for use in inkjet recording medium coatings and methods

Details Pigment for use in inkjet recording medium coatings and methods Pigment for use in inkjet recording medium coatings and methods

2008-05-27

2008-05-27

Hailey, Patricia L. (Department: 1793)

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

C106S486000, C106S487000, C428S032100, C428S032200, C428S032300, C524S437000, C524S556000, C524S557000, C524S563000, C524S571000, C524S577000

Reexamination Certificate

active

07377975

ABSTRACT:
Pigment suitable for use in coating compositions for inkjet recording media. Surfaces of an inorganic particulate are interacted with a water-soluble polyvalent metal salt in an aqueous medium. The treated particle surfaces have a significant cationic surface charge imparted to them. The salt is a salt of a metal of Group II or Group III of the Periodic Table. Inkjet recording media treated with a coating composition containing the above pigment provide high density, fast-drying, and non-feathering ink images with suitable water fastness, while the coating compositions also offer cost advantages and improved rheology at higher pigment levels over coatings based on silica pigments.

REFERENCES:
patent: 5037508 (1991-08-01), Hyder et al.
patent: 5534057 (1996-07-01), Harrison et al.
patent: 6183851 (2001-02-01), Mishima
patent: 6492005 (2002-12-01), Ohbayashi et al.
patent: 2002/0039639 (2002-04-01), Kondo et al.
patent: 2004/0033377 (2004-02-01), Koenig

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