allows the application of a well defined strip having sufficient coating thickness and the required surface characteristics the width of leading edge strip 20 is equal to or less than the width of the opaque border upon which it is applied the width of leading edge strip 20 preferably ranges from about 1 4 in to about 3 4 in the caliper of leading edge strip 20 preferably ranges from about 0 002 in to about 0 005 in more preferably from about 0 003 in to about 0 004 in regardless of the particular caliper of leading edge strip 20 it is preferred that strip 20 be of sufficient thickness so as to provide an air gap between the leading edges of adjacent sheet material when said sheet material is disposed in a stack in order to more fully illustrate the present invention and the advantages thereof the following non limiting illustrative example is provided a coatable liquid composition suitable for preparing both image receptive layer 14 and anti blocking layer 16 was prepared by adding the ingredients shown in table i in the proportions shown therein to a mixture of 433 parts by weight of toluene and 396 parts by weight of methyl ethyl ketone table i______________________________________ingredient parts by weight______________________________________polymethyl methacrylate 127 5 34 elvacite 2041 34 e i dupont de nemours amp co soluble polyester resin 2 5 34 vitel pe 200 34 goodyear tireand rubber company urea formaldehyde particulate 1 8 34 pergopak m 2 34.