| 摘要 |
<p>A dyesheet for thermal transfer printing has a heat resistant backcoat comprising a) a crosslinked polymeric binder having a thickness t, b) lubricating particles and c) load-bearing particles having an average diameter greater than t; wherein the haze value is less than 12 % for printer compatibility. Combinations of at least 0.5 % of each of the preferred species of the particles (b & c) enable the particle contents to be sufficiently small to achieve the specified low haze values while still retaining usable slip and handling properties. Preferred species of lubricating particles are carboxylic or phosphoric acids, acid amides, esters and their multivalent metal salts, with at least one C12-30 alkyl chain and an average particle diameter of 0.1-2.5 νm. Preferred load-bearing particles are spherical and/or elastomeric, with an average particle diameter of 1.2t-2t, especially silsesquioxane compounds.</p> |
