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US 6,312,872 B1Granted
Composite relief image printing plates
AssigneeMacDermid Graphic Arts, Inc.
InventorsEdward Murphy, David Recchia, Daniel Rosen
Life of this patent
Estimating the term…
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 printing element in approximate register and then transferring a computer-generated negative onto a surface of the elements.
Claims29
A method for preparing a composite printing element, comprising the steps of:
- transferring registration information to an outer face of a printing element;
- disposing a first face of at least one solid photocurable element comprising photocurable material and having first and second opposing major faces of defined surface area upon said printing element in accordance with said registration information transferred to said printing element, wherein a photoablatable mask layer is disposed upon said second opposing major face of said solid photocurable element;
- and
- transferring graphic data to said second opposing major face of said solid photocurable element by photoablating said photoablatable mask layer with a laser, thereby providing ablated and unablated areas forming an image, said ablated areas exposing said second opposing major face of said solid photocurable element.
1 more element
A method for preparing a composite printing elements, comprising the steps of:
- transferring registration information to an outer face of a substantially arcuate printing element;
- disposing a first face of at least one solid photocurable element comprising photocurable material having first and second opposing major faces of defined surface area upon said substantially arcuate printing element in accordance with said registration information transferred to said substantially arcuate printing element;
- and
- transferring graphic data to said second opposing major face of said solid photocurable element.
1 more element
Dependencies are inferred from the claim text.