Negative-working imageable elements

摘要

Negative-working imageable elements can be imaged and processed to provide lithographic printing plates. These imageable elements are sensitive to infrared radiation but are insensitive to "white" light and thus can be more easily handled under white light conditions. These properties are possible by incorporating a filter dye having a lambdamax of from about 300 to about 500 nm into the imageable layer of the imageable elements.