Positive-working imageable elements and method of use

An infrared radiation-sensitive positive-working imageable element has a substrate and single imageable layer that includes a first polymeric binder having urethane or urea moieties in its backbone. The first polymeric binder is also insoluble in water and soluble in a weakly alkaline solution. This...

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Bibliographische Detailangaben
Hauptverfasser: KITSON ANTHONY P, MIKELL FREDERIC E, PATEL JAYANTI, RAY KEVIN B, SARAIYA SHASHIKANT
Format: Patent
Sprache:eng
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Zusammenfassung:An infrared radiation-sensitive positive-working imageable element has a substrate and single imageable layer that includes a first polymeric binder having urethane or urea moieties in its backbone. The first polymeric binder is also insoluble in water and soluble in a weakly alkaline solution. This imageable element can be imaged and processed using weakly alkaline processing solutions that are free of silicates and metasilicates, which processing solutions may also be used to "gum" the imaged and developed printing surface.