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US 8,238,646 B2Granted
Apparatus and method for the automated marking of defects on webs of material
Assignee3M Innovative Properties Company
InventorsSteven P. Floeder, James A. Masterman, Carl J. Skeps
Life of this patent
Estimating the term…
Abstract
A system for the characterization of webs that permits the identification of anomalous regions on the web to be performed at a first time and place, and permits the localization and marking of actual defects to be performed at a second time and place.
Claims5
A method of analyzing a web of material containing at least two anomalies, comprising:
- receiving the web of material having upon it regularly spaced fiducial marks that uniquely identify a plurality of distinct positions on the web;
- receiving digital information that identifies regions on the web containing the at least two anomalies, and positional information defining the positions of the identified regions relative to at least one of the fiducial marks;
- and
- as part of a web operation that is temporally distinguished from web operations that yielded the digital information and separated by at least a winding step whereby the web of material is wound onto a roll, unwinding the web and applying locating marks to the web identifying the position of at least one of the identified regions, using the positional information and the fiducial marks as a guide.
1 more element
Dependencies are inferred from the claim text.