Fujifilm Imaging Colorants, Inc.

John Mayall

Clive Edwin Foster

Mark Kenworthy

Prakash Patel

Tom Annable

Rachel Anne James

A process for printing an image on a substrate comprising the steps of: (a) applying an ink comprising polymer-encapsulated pigment particles and an aqueous medium to a substrate by means of an ink jet printer, wherein (i) the said particles are dispersed in the aqueous medium, and (ii) the said particles comprise a carboxy-functional dispersant crosslinked around a pigment core by a first crosslinking agent; and (b) crosslinking the polymer-encapsulated pigment particles with a second crosslinking agent. The process is particularly useful for printing polymeric substrates which come into contact with rubbing and/or moisture.

Printing process

A compound of Formula (1) in the free acid or salt form: wherein: 

Phthalocyanine compounds and their use in ink-jet printing

A metal chelate compound obtainable from contacting a transition metal salt with a compound of the Formula (1): wherein: that, p, the level of sulfonation, is not in the range 1 to 2. Also compositions, inks, printed substrates and inkjet cartridges.

Magenta metal complex azo compounds and inks and their use in ink-jet printing

A metal chelate compound obtainable from contacting a transition metal salt with a compound of the Formula (1) or a salt thereof: wherein p is 1 to 2. Also compositions, inks, printed substrates, ink-jet cartridges and ink-jet printers.

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Manchester, United Kingdom

John Mayall