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US 5,846,691 AGranted
Composite relief image printing plates and methods for preparing same
AssigneePolyfibron Technologies, Inc.
InventorsGeorge Cusdin, Joseph Crowell
Life of this patent
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Abstract
High-quality composite printing elements are prepared without the need for precise registration of constituent photocurable elements by disposing at least one photocurable element, and preferably a plurality of photocurable elements, upon a surface of a substantially planar carrier sheet in approximate register and then transferring a computer-generated negative onto a surface of the elements.
Claims20
A method for preparing a composite printing plate, comprising the steps of:
- transferring registration information by ejecting ink from an ink jet print head to a first face of a substantially planer carrier sheet having first and second opposing major faces of defined surface area;
- disposing a first face of at least one substantially planer photocurable element having first and second opposing major faces of defined surface area upon the first face of said carrier sheet possessing said registration information;
- ejecting a negative-forming ink from said ink jet print head onto the second face of said photocurable element, said negative-forming ink being substantially opaque to actinic radiation in at least one wavelength region effective to cure photocurable material within said element and substantially resistant to polymerization upon exposure to actinic radiation in said wavelength region.
Dependencies are inferred from the claim text.