Mask forming imageable material and use

摘要

An imageable material can be used to form a mask image for providing a relief image. This imageable material has a simplified structure and consists essentially of, in order: a transparent polymeric carrier sheet and a barrier layer comprising a first infrared radiation absorbing compound. A first ultraviolet radiation absorbing compound is provided in the transparent polymeric carrier sheet or the barrier layer. A non-silver halide thermally sensitive imageable layer is disposed on the barrier layer and comprises a second infrared radiation absorbing compound and a second ultraviolet radiation absorbing compound. A relief image is formed by imaging the imageable material to form an imaged mask material, exposing a relief-forming material with curing radiation through the imaged mask material to form exposed regions and non-exposed regions, and developing the imaged relief-forming material to form a relief image by removing its non-exposed regions.

主权项

1. An imageable material consisting essentially of, in order:
(a) a transparent polymeric carrier sheet, (b) a barrier layer disposed directly on the transparent polymeric carrier sheet, the barrier layer comprising a first infrared radiation absorbing compound, wherein either or both of the transparent polymeric carrier sheet and barrier layer further comprise a first ultraviolet radiation absorbing compound, and (c) a non-silver halide thermally sensitive imageable layer disposed directly on the barrier layer, the non-silver halide thermally sensitive imageable layer comprising a second infrared radiation absorbing compound and a second ultraviolet radiation absorbing compound, both dispersed within a polymeric binder wherein the first ultraviolet radiation absorbing compound and the second ultraviolet absorbing compound are same or different UV-absorbing dyes, and the total amount of the first ultraviolet radiation absorbing compound in either or both of the transparent polymeric carrier sheet and the barrier layer, is less than the amount of the second ultraviolet radiation absorbing compound.