Abstract: A recording sheet for ink jet printing comprising a support having coated onto said support at least one ink receiving layer and a gelatin containing absorption layer, characterized in that the absorption layer is situated between the support and the ink receiving layer and that it comprises a micelle forming compound selected from salts of branched or unbranched alkyl sulfates of formula CnH2n+1OSO3H, wherein n is from 5 to 25; salts of branched or unbranched alkyl phosphates of formula CnH2n+1OPO3H2, wherein n is from 5 to 25; substituted phenols of general formula (I)  wherein n is from 18 to 50; or salts of substituted phenols of general formula (II)  wherein n is from 5 to 55.

Abstract: A recording sheet for ink jet printing is described, which consists of a support having coated thereon at least one ink-receiving layer consisting of binders and a porous inorganic oxide, wherein the recording sheet contains tautomeric compounds of formulas Ia (diketo form) and Ib (enol form) 1

Abstract: 1

Abstract: A recording sheet for ink jet printing described, which consists of a support having coated onto said support at least one ink receiving layer consisting of one or more binders and a mixture of different water insoluble, inorganic oxides of the elements aluminium or silicium, oxide/hydroxides of the element aluminium or aluminium silicates, wherein at least one of said oxides, oxides/hydroxides or silicates has a pore volume of ≧40 ml/100 g and is present in an amount of at least 8 weight percent relative to the total amount of all the water insoluble, inorganic oxides, oxide/hydroxides or silicates and that the primary particles of the mixture component with the largest volume have an equivalent sphere diameter of less than 20 nm and the primary particles of the mixture component with the smallest volume have an equivalent sphere diameter that is at least {fraction (1/20)} of the equivalent sphere diameter of the primary particles of the mixture component with the largest volume.

Abstract: Monoazo dyes of formula (3) wherein A, R1, R2, M and n are as defined in the specification, are excellent dyes for dyeing and printing of cellulose containing materials and especially for the preparation of inks for ink jet printing.

Abstract: Metallized bisazo dyes of general formula (IX) or of general formula (X) wherein A, R1, R2, R3, M and Met are defined in the specification are excellent dyes for dying and printing cellulose containing materials and especially for the preparation of inks for ink jet printing.

Abstract: Azo dyes of formula (4) ##STR1## wherein A, R.sub.4, M and m are as defined in the specification, are excellent dyes for dyeing and printing of cellulose containing materials and especially for the preparation of inks for ink jet printing.

Abstract: Disazo dyes formula (VIII) ##STR1## or of formula (IX) ##STR2## Where A, R.sub.1, R.sub.2, n and M are as defined in the specification are excellent dyes for ink jet printing.

Abstract: Bisazo dyes of formula (IX) ##STR1## and of formula (X) ##STR2## wherein A, R.sub.4, M and n are as defined in the specification, are excellent dyes for dyeing and printing of cellulose containing materials and especially for the preparation of inks for ink jet printing.

Abstract: There is described novel azo dyes of formula (4) with high water solubility for use in aqueous inks, particularly for ink jet recording, which provide images having high water, smudge and light resistance ##STR1## wherein n, m are each independently 2 to 6;R is hydrogen or an aliphatic radical having from 1 to 6 atoms;M is hydrogen, a metal atom, preferentially an alkali metal, an ammonium or ammonium substituted with alkyl, alkoxyalkyl or hydroxyalkyl each having 1 to 12 C atomsandF represents a mono-azo or a poly-azo dye residue.

Abstract: There is described a new magenta azo dye which can be used in an aqueous composition in an ink-jet printing process.