Method and apparatus for improving registration and skew end of line checking in production
First Claim
1. A system for use in determining registration and/or skew errors in a print medium with respect to a printing element, the system comprising:
- a processor;
the print medium including a two-dimensional pattern comprising a grid within a geometric shape;
said grid having a plurality of vertical and horizontal lines, an intersection of each one of said vertical and horizontal lines forming a cross-hair defining an X-Y positional data point, a collection of said X- Y positional data points of each one of said vertical and horizontal lines of said grid defining a data set useful for correcting a registration and/or skew error between said print medium and said printing element;
said geometric shape being in the form of a two-dimensional target having a plurality of concentric circular rings, an innermost one of said plurality of concentric circular rings forming a bulls-eye, said bulls-eye enclosing at least one of said X-Y positional data points in said data set, a center cross-hair defining an enclosed X-Y positional data point being located at or near the center of said bulls-eye;
said printing element is for placing a marker onto said print medium for use in determining said registration and/or skew error between said print medium and said printing element;
wherein the positional location of said marker with respect to said center cross-hair defining said at least one enclosed X-Y positional data point defines a directional displacement vector for correcting said registration and/or skew error between said print medium and said printing element;
wherein the positional location of said marker with respect to said center cross-hair of said at least one X-Y positional data point defining said directional displacement vector is determined by the processor.
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Abstract
System, method, article for determining registration and/or skew errors in a print medium with respect to a printing element includes a print medium including a two-dimensional pattern including a grid within a geometric shape. The grid has a plurality of vertical and horizontal lines, the intersection of each forming a cross-hair defining an X-Y positional data point; the collection of data points defining a data set. The geometric shape is in the form of a two-dimensional target having a plurality of concentric rings; an innermost one enclosing at least one of the X-Y positional data points in the data set. The printing element provides a marker onto the print medium. The positional location of the marker with respect to the one of the at least one enclosed X-Y positional data point defines a directional displacement vector for correcting registration and/or skew error between the print medium and the printing element.
142 Citations
11 Claims
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1. A system for use in determining registration and/or skew errors in a print medium with respect to a printing element, the system comprising:
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a processor; the print medium including a two-dimensional pattern comprising a grid within a geometric shape;
said grid having a plurality of vertical and horizontal lines, an intersection of each one of said vertical and horizontal lines forming a cross-hair defining an X-Y positional data point, a collection of said X- Y positional data points of each one of said vertical and horizontal lines of said grid defining a data set useful for correcting a registration and/or skew error between said print medium and said printing element;said geometric shape being in the form of a two-dimensional target having a plurality of concentric circular rings, an innermost one of said plurality of concentric circular rings forming a bulls-eye, said bulls-eye enclosing at least one of said X-Y positional data points in said data set, a center cross-hair defining an enclosed X-Y positional data point being located at or near the center of said bulls-eye; said printing element is for placing a marker onto said print medium for use in determining said registration and/or skew error between said print medium and said printing element; wherein the positional location of said marker with respect to said center cross-hair defining said at least one enclosed X-Y positional data point defines a directional displacement vector for correcting said registration and/or skew error between said print medium and said printing element; wherein the positional location of said marker with respect to said center cross-hair of said at least one X-Y positional data point defining said directional displacement vector is determined by the processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification