| 摘要 |
A light sensitive plate comprises a support coated with a layer comprising a tannable resin and a diazo or azido compound having light decomposition products capable of tanning the resin. The tannable resin is low viscosity hydroxyethyl cellulose or a polymer of acrylamide and at least two other monomers containing up to 30 percent by weight of the other monomers. The monomers are selected so that the layer does not swell on development. The light sensitive plate is storage stable and is suitable for the production of half-tone lithographic printing plates by the deep-etch process. |
