Patent ID: 7604342
Filing Date: 2009-10-20
Classification: B41M,C01B

Abstract:
1. A method for treating a pre-existing inkjet recording element comprising a support and at least one ink-receiving layer, whereby the stability to ozone and glossiness is improved compared with the untreated inkjet recording element, comprising applying a solution of an aluminosilicate polymer onto the printing surface of said untreated recording element, said aluminosilicate polymer obtained by a preparation method that comprises the following steps: a) treating a mixed aluminum and silicon alkoxide of which the silicon has at least three hydrolyzable substituents, or a mixed aluminum and silicon precursor resulting from the hydrolysis of a mixture of aluminum compounds and silicon compounds having only hydrolyzable substituents and silicon compounds having at least three hydrolyzable substituents, with an aqueous alkali, in the presence of silanol groups, the aluminum concentration being maintained between 1.5×10 b) stirring the mixture resulting from step a) at a temperature between 15° C. and 35° C. in the presence of silanol groups long enough to form the aluminosilicate polymer; and c) eliminating the by-products formed during steps a) and b) from the reaction medium.