| 摘要 |
An aqueous processable element for thermally-induced photoimaging and a photoimaging process using the element are disclosed. The element comprises, in order: (A) a dimensionally stable support, and (B) an active layer comprising: (1) a cationic polymer containing pendant ammonium groups, said cationic polymer being removable from said support by aqueous processing, said pendant groups having the general formula: -N[(R1)(R2)(R3)]+X-, (2) an infra-red absorbing material, and (3) optionally, a colorant; wherein: R1, R2, and R3 are independently selected from the group consisting of hydrogen, substituted and unsubstituted alkyl, substituted and unsubstituted alkenyl, and substituted and unsubstituted aryl; R1, R2, and R3 together contain not more than about thirty carbon atoms; and X is an anion.
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