| abstract |
An imagable composition, for example a coating on a lithographic printing plate,ncomprises a carboxylic acid derivative of a cellulosic polymer and a diazide moiety, andnmay be imaged in various ways, including by ultra-violet radiation, by infra-red radiationnand by heat. The presence of the cellulosic polymer can act to enhance resistance toncertain organic liquids and/or to increase operating speed. |