Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1998-12-31
2000-12-26
Le, N.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347251, 358534, 358429, 358456, B41J 247
Patent
active
061667587
ABSTRACT:
A method is disclosed for calibrating a grey level recording printhead having a plurality of recording elements. The method comprises measuring a parameter of each recording element, the parameter relating to a recording characteristic of the element, in response to measuring the parameter, defining a set of cells of clock periods having time boundaries to determine a set of K quantized clock periods; defining a subset of one or plural contiguous grey values within a set of J grey values recordable by the printhead for recalculation of a subset k of quantized clock periods wherein the number k of quantized clock periods is less than the number K, and recalculating at least some time period boundaries and clock periods for the grey levels j without changing the K total number of K clock periods.
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Eastman Kodak Company
Le N.
Pham Hai C.
Rushefsky Norman
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