Memjet Technology Limited

Silverbrook Research Pty Ltd

Iain Blake

Simon Fielder

Jognandan Prashar

Adrian Peter Bisson

Michele Shepard

Richard Myors

Kia Silverbrook

David Alvin Tyvoll

Teruyuki Fukuda

Satoshi Tanaka

Christopher Barton

Michele Gimona

Alexander Grant

Roger Davey

Steven Carter

Stephen Bernard

Philippa Read

Luke Grassy

An inkjet ink includes: (i) a disazo dye of formula (I): (ii) 1,3-propanediol; (iii) a glycol compound selected from the group consisting of: triethylene glycol and tetraethylene glycol; and (iv) water. The ink has low toxicity and is preferably absent ethylene glycol and sulfolane.

Low toxicity ink formulations with improved printhead lifetime

A method of inkjet printing includes the steps of: printing a first ink onto a print medium, the first ink including a first self-dispersible pigment, the first ink having a first pigment content A; and subsequently printing a second ink onto the print medium at least partially over the first ink, the second ink including a second pigment and a polymeric dispersant encapsulating the second pigment, the second ink having a second pigment content B. The first self-dispersible pigment and the second pigment have a same color; the pigment content A of the first ink and the pigment content B of the overprinted second ink have a relationship 0.8&#x2266;A/B&#x2266;1.2; and a polymer acid value of the polymeric dispersant is in the range of 100 to 170.

Method of printing pigment-based inks including ink sets, inks and printers therefor

An inkjet ink for improving printhead lifetimes includes: an aqueous-based ink vehicle; a colorant; an anti-kogation additive; and an anti-corrosion additive having at least one acetylenic group, the acetylenic group being absent any tertiary or quaternary &#x3b1;-carbon atoms.

Ink additive combinations for improving printhead lifetime

A solvent-based ink composition for a thermal inkjet printhead comprises a surface-modified pigment. The ink composition comprises: 

Solvent-based inkjet inks comprising surface-modified pigments

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North Ryde, Australia

Iain Blake