Heat sensitive imaging element and a method for producing lithographic plates therewith

摘要

According to the present invention there is provided a heat sensitive imaging element comprising a support having a hydrophilic surface contiguous to said hydrophilic surface of a support a hydrophobic heat sensitive composition comprising a hydrophobic polymer binder, a compound capable of converting light into heat, and a reactive compound or mixture of reactive compounds present in an amount which surpasses the absorptive capacity of the hydrophobic polymer binder for said compound or mixture of compounds, the said reactive compound or mixture of compounds being reactive under the influence of heat or under the influence of a reagent which is obtained by decomposition of a heat sensitive compound one or more thermo-adhesive layers, at least one of the thermo-adhesive layers being contiguous to the hydrophobic heat sensitive composition.