In-line printing
AssigneeHP Indigo B.V.
InventorsYoav Landau, On Mashiach
Life of this patent
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Abstract
In one example of the disclosure, a first print engine is to print a first image in a first area of a web substrate, and is to leave blank a second area of the web substrate. The printed first image includes a set of fiducials 1-n. For each of fiducials 1-n, a fiducial position error is determined based upon a comparison of the detected position and a predicted position for a subject fiducial. A substrate advancement error is calculated based upon an average of the determined fiducial position errors. An insertion point is determined based upon the substrate advancement error. The insertion point is a point at which a second print engine in-line with the first print engine is to begin printing a second image in the second area.
Claims17
A system for in-line printing, comprising:
- a first print engine to print a first image in a first area of a web substrate and leave blank a second area of the web substrate, the first image including a set of fiducials;
- a second print engine in-line with, and downstream from, the first print engine;
- an optical sensor to detect each fiducial, comprising a position component to identify a detected position for each of the fiducials;
- a substrate advancement error component to determine, for each fiducial, a fiducial position error based upon a comparison of the detected position and a predicted position of each fiducial, and
- to calculate a substrate advancement error based upon the determined fiducial position errors;
- and
- an insertion component to determine, based upon the substrate advancement error, an insertion point at which the second print engine in-line with the first print engine is to begin printing a second image in the second area.
Dependencies are inferred from the claim text.