Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2011-03-29
2011-03-29
Pham, Hai C (Department: 2861)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
C347S251000
Reexamination Certificate
active
07916164
ABSTRACT:
A method of measuring a relative darkness of an image recorded on a recording medium, comprising: applying first electromagnetic energy having a first wavelength to the recording medium to record an image thereon, applying second electromagnetic energy having a second wavelength different from the first wavelength to the recorded image on the recording medium, and measuring a reflection of the second electromagnetic energy from the recorded image to determine the relative darkness of the recorded image.
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Boerger Paul
Hanks D. Mitchel
Lipinski Greg J.
Van Brocklin Andrew L.
Hewlett--Packard Development Company, L.P.
Pham Hai C
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