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OwnerAndre Luiz Arias, Luiz Nei Arias +2inventors
InventorsAndre Luiz Arias, Luiz Nei Arias, Marjorie Arias, Mario Italo Provenzano
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The invention relates to new radiation sensitive coating compositions and coating product which are radiation sensitive in the infrared region closed to the infrared, comprising two layers, the first layer comprising a hiding polymer and one or more infrared absorbing material which absorbs in the desired wavelength and a second layer coated on the first layer comprising one or more copolymer which is able to coat and make the polymer of the first layer insoluble in the conventional developer of positive plates, and when applied to an appropriate substrate is useful as off-set lithographic printing plates, for color proofing films and photoresist. The invention also refers to a printing or imaging process.
A radiation sensitive coating composition, wherein said composition creates two superposing coating layers.
A coating composition according to any of the preceding claims, wherein said composition is applied onto a graphic printing plate and said plate does not need a heat treatment prior to development.
A coating composition according to any of the preceding claims, wherein said composition is applied onto a lithographic printing plate and said plate is subjected to a heat curing step after development.
A coating composition according to any of the preceding claims, wherein said composition is dissolved in a suitable solvent system.
A coating composition according to any of the preceding claims, wherein the first layer provides a coating having a dry weight in the range from 0.5 to 2.0 g/m2, preferably from 0.7 to 1.4 g/m2.
A coating composition according to any of the preceding claims, wherein the second layer provides a coating having a dry weight in the range from 5 to 200 mg/m2, preferably from 10 to 100 mg/m2.
A coating composition according to any of the preceding claims, wherein said composition is applied in order to provide a radiation sensitive coating between 750 and 1200 nn on an textured and anodized aluminum substrate or on a polyester substrate.
A coating composition wherein said composition is as described in the specification and examples.
A coating composition according to any of the preceding claims, wherein said composition comprises:
A printing or imaging process wherein said process is as described in the specification and examples.
A radiation sensitive coating product wherein said product comprises two superposing layers.
radiation sensitive coating wherein said coating comprises two superposing layers.
Dependencies are inferred from the claim text.