the same time maintaining or enhancing the cie whiteness and iso brightness of the paper while the paper substrates of the present invention show enhanced properties suitable for inkjet printing the substrates may also be used for multi purpose and laserjet printing as well these applications may include those requiring cut size paper substrates as well as paper roll substrates the paper substrate of the present invention may contain an image the image may be formed on the substrate with any substance including dye pigment and toner once the image is formed on the substrate the print density may be any optical print density including an optical print density that is at least 1 0 at least 1 2 at least 1 4 at least 1 6 methods of measuring optical print density can be found in ep 1775141 the preparation of a compound of formula 1 in which m na and n 6 has been described previously in wo 02 060883 and wo 02 077106 no examples have been provided of the preparation of a compound of formula 1 in which m u2260 x and n lt 6 the compounds of formula 1 are prepared by stepwise reaction of a cyanuric halide with as a cyanuric halide there may be employed the fluoride chloride or bromide cyanuric chloride is preferred each reaction may be carried out in an aqueous medium the cyanuric halide being suspended in water or in an aqueous organic medium the cyanuric.