Avecia Limited

Zeneca Limited

Janette Watkinson

Aidan Joseph Lavery

Paul Wight

Mark Robert James

Tom Annable

Mark Kenworthy

Kathryn Carr

Colin Dick Robertson

John Parker Meyers

Paul Francis Mahon

Bachaspati Roy

John Edward Presgrave

High light- fastness yellow composition

Composition containing two different disazodyestuffs useful for ink jet recording

An ink-jet printing process comprising the steps (a) and (b) in any order or simultaneously: (a) applying by means of an ink jet printer an ink to a substrate in a localised manner to form an image on the substrate; and (b) applying to the substrate a composition comprising a binder and a polymeric biguanide which has a repeat unit of Formula (1) or a salt thereof: wherein X and Y are the same or different and represent divalent organic linking groups.

Ink-jet printing process using polymeric biguanides

Disazodyes for ink jet printing

The use of lithium as a cation for an anionic dye to enhance the light-fastness of the dye. Also claimed are the lithium salts of certain anionic dyes as defined in the description; mixed lithium/sodium salts of an anionic dye wherein the molar ratio of lithium to sodium is from 1:4 to 99:1 and at least 20 mole % of the total counter ions in the dye are lithium cations; inks containing the dyes; a method of ink jet printing using the inks; a substrate printed with the inks; an ink jet printer cartridge containing the ink and a ink jet printer containing the ink jet printer cartridge.

Use of lithium salts of anionic dyes to enhance their light-fastness

Ink composition

Ink additives

Dye compositions

Growing community of inventors

Manchester, United Kingdom

Janette Watkinson