| 摘要 |
An offset plate sensitive to UV or visible light, prepared simply and imaged digitally therewith in a CTP method, and also processed in a simple manner. The plate is provided as a photopolymer plate with increased sensitivity, an d is used in a simple imaging-on-press system, using the surface of a lithographic printing cylinder itself as a plate substrate. The method of preparing the printing plate begins by applying a photosensitive liquid coating to the substrate, digitally imaging the coated substrate, using an actinic light source to polymerize portions of the liquid coating in accordance with the imaging, and washing the liquid coating with an aqueous solution after the imaging to remove unpolymerized portions of the liquid coating. The typical constraints on coatings for offset lithographic plates are removed by utilizing sticky or wet layers as coatings so that little or no binder is present to interfere with the sensitivity or ease of processing.</ SDOAB>
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