Overcoat layer for dye-donor element for laser-induced thermal dye transfer system

摘要

In a dye-donor element for laser induced thermal dye transfer comprising a support with a dye layer contg. an image dye dispersed in a polymeric material and associated with an IR absorbing material, the polymeric material has been coated from an aq. dispersion and consists of a hydrophilic polymer which has been set, and the dye layer also has an overcoat layer comprising spacer beads dispersed in a polymeric binder. Also claimed are a process of forming a laser-induced thermal dye transfer image; and a thermal dye transfer assembly. The hydrophilic polymer is gelatine. The IR absorbing material is in the dye layer. The beads used have such a particle size and are used in such an amt. so that the effective contact between dye donor and dye-receiving element is prevented during the dye transfer. The spacer beads have particle size of 5-50 microns and are present in conc. of 60-60000/cm2. The beads are dispersed in PVAC.