Ink jet printer ink
AssigneeXaar Technology Limited
InventorsStuart Molloy, John Philip Tatum
Life of this patent
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Abstract
An ink jet printer ink is provided in the form of a non-aqueous dispersion of colorant in a diluent and containing a dispersant for the colorant and which yields print having no discernible odor. The diluent comprises more than 50% by volume of white oil and the dispersant, which is employed in an amount of at least 20% by weight of the colorant, comprises at least one compound having both a long chain aliphatic group and at least one α, β-dicarboxylic acid moiety, e.g. a polyisobutylene succinimide.
Claims20
An ink jet printer ink having a viscosity no greater than 15 mPas at 25° C. comprising a dispersion of particulate pigment dye in a diluent and containing a dispersing agent for the pigment dye wherein the diluent comprises more than 50% by volume of white oil and the composition includes at least one dispersing agent comprising at least one compound having both an at least C36 alkyl group or alkenyl group containing at least one unsaturated carbon-carbon bond and at least on α,β-dicarboxylic acid imide moiety, said dispersing agent being present in an amount of at least 20% by weight of said pigment dye, wherein the pigment dye is a non-carbon black colorant.
Dependencies are inferred from the claim text.