a binding substrate comprising a substrate bearing on at least one major surface thereof a water receptive layer which comprises at least one polymer and an effective amount of an ink binding polymer that has an amino as well as a guanidine functional moiety incoporated in it . one such molecule that essentially has both the amino and guanidine moieties is polyaminopropyl biguanidine . the present invention describes the use of polyaminopropy biguandine in inkjet technology .