Imageable material with radiation absorbing microstructured layers overcoated with photoresist layer
AssigneeMinnesota Mining and Manufacturing Company
InventorsRichard S. Fisch, Valdis Mikelsons
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Abstract
An imageable article comprising a photoresist layer on a substantially radiation absorbing layer of metal having a microstructured surface characterized by a plurality of randomly positioned discrete protuberances of varying heights and shapes, which protuberances have a height of not less than 20 nanometers nor more than 1500 nanometers, and the bases of which contact the bases of substantially all adjacent protuberances is disclosed. The imageable article is particularly useful in the field of graphic arts.
Claims13
An imageable article comprising a photoresist layer coated on a substantially radiation absorbing layer of metal on a microstructured layer, both the metal layer and microstructured layer having a microstructured surface characterized by a plurality of randomly positioned discrete protuberances of varying heights and shapes, which protuberances have a height of not less than 20 nanometers nor more than 1500 nm, the average spacing between the tips of the protuberances being no more than twice the average height of the protuberances, and the bases of which contact the bases of substantially all adjacent protuberances wherein the metal is selected from chromium, aluminum, copper, gold and nickel.
Dependencies are inferred from the claim text.