Method and apparatus for measuring scanner registration
AssigneeXerox Corporation
InventorDavid L. Salgado
Life of this patent
Estimating the term…
Abstract
A registration detection system for determining a registration problem in an apparatus having an optical reader adapted to scan a document. The system comprising a test pattern generator and a mixer for combining an output of the test pattern generator with an output of the optical reader.
Claims24
A registration detection system for measuring document registration in an apparatus having an optical reader adapted to scan a document, the system comprising:
- a test pattern generator;
- and
- a mixer for automatically combining an output of the test pattern generator with an output of the optical reader and generating a difference signal representing a registration error.
A method for determining if a scanner registration problem exists in an apparatus adapted to scan a document, the method comprising the steps of:
- printing a first image
- scanning the first image;
- automatically combining a first test pattern with the scanned first image;
- and
- providing informative feedback resulting from the step of combining the first test pattern with the scanned first image in order to identify a registration error.
A scanner device registration measuring system for determining a scanner registration problem in a scanner device, the system comprising:
- a test pattern generator;
- an input document scanning device;
- and
- an image transfer system connected to the test pattern generator and the input document scanning device the image transfer system adapted to automatically merge a calibration pattern scanned by the scanning device with a generated pattern from the test pattern generator, the merge adapted to identify any registration problems.
Dependencies are inferred from the claim text.