| abstract |
A light or heat-sensitive material for recording images or data, which material has at least one layer containing a pyrrole compound or a pyrrole oligomer, e.g. porphyrin, in a plastic support material and preferably containing an acid donor, e.g. a sulphonic acid or esters thereof or mono- or di- alkyl phosphoric acid esters and a photo- or thermo-initiator. The sensitive layer may be protected with an overcoat layer. |