Metalized recording medium

Abstract

To reduce adherence of particles to electrodes and improve the contrast of recording paper, particles of oversized pigments are including in a contrast lacquer or ink layer which have a diameter such that the oversized particles or grains extend out from the lacquer or contrast layer, that is, have a diameter which is greater than the thickness of the ink layer. Suitable particles are carbon black, and calcium carbonate, particularly if darkly colored, present in about 3%-by weight-of the wet content of the lacquer layer which, for example, is a layer of nitrocellulose with finely grained carbon black pigment therein, of a thickness in the order of 1 to 10 .mu.m; the additional oversized pigment granules will have a thickness in the order of about 2 to 20 .mu.m, preferably, on the average, about 5 .mu.m and embedded in lacquer layer of about 2 .mu.m thickness, over which a vapor deposited layer of aluminum of between 0.01 and 0.1 .mu.m is applied. A typical substrate is paper.

Dependencies are inferred from the claim text.