RADIATION SENSITIVE COMPOSITION

专利名称：RADIATION SENSITIVE COMPOSITION发明人：JAMES SHELNUT,RICHARD COHEN申请号：AU8448182申请日：19820604公开号：AU8448182A公开日：19821223

摘要：A colored, positive-acting, radiation-sensitive composition whose color isextinguished or greatly decreased in intensity upon irradiation comprising at least oneacid-free resin, at least one acid-sensitive dyestuff and at least one positive-actingcomponent which yields an acidic product upon irradiation; positive-acting elementscomprising suitable support materials at least one surface of which has been coated withthe above composition and lithographic printing plates comprising the above elements,wherein the support materials are lithographically suitable support materials, which havebeen imagewise exposed to radiation wherein there is a high contrast, before

development, between the colored image areas and less intensely colored or colorlessnon-image areas, the image areas of said plates being additionally highly stable againstaqueous alkaline developers after development to remove the exposed non-image areasof the composition and more highly colored than the non-image areas of the revealedsubstrate surface.

申请人：POLYCHROME CORP.

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