Patent ID: 6838505

Claim:
A coating fluid for forming a coating on a support for use in inkjet printing, said fluid comprising a liquid medium having dispersed therein (a) an inorganic oxide selected from the group consisting of aluminium oxide and silica, (b) a binder polymer, and (c) a polymeric crosslinking agent containing functional groups for reaction with the inorganic oxide, wherein the relative amount of inorganic oxide to polymeric crosslinking agent is from 500:1 to 15:1 and the relative amount of inorganic oxide to binder polymer is from 50:1 to 2:1, the amount being by weight on a dry basis, wherein the functional groups in the cross linking agent react with hydroxyl groups on the inorganic oxide to form in the case of alumina Si—O—Al bonds or in the case of silica Si—O—Si bonds.