Sensitizer/Initiator Combination for Negative-Working Thermal-Sensitive Compositions Usable for Lithographic Plates

摘要

The radiation-sensitive composition and the negative working imageable element include a cationic IR absorber with tetraarylborate counteranion and an onium initiator with tetraarylborate counteranion. The use of these components provides high imaging sensitivity, good shelflife and high print run length.