Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1997-01-31
2000-01-11
Le, N.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347236, 347237, 347246, 347247, 347132, 347135, B41J 2435
Patent
active
060141611
ABSTRACT:
A system and method of calibrating pulsewidth modulation of a laser. The output power of the laser is determined and a signal indicative of the output power is provided to a printer system control computer. The control computer calibrates the pulsewidth modulated signal responsive to the signal indicative of the output power. In a preferred embodiment, the control computer includes a lookup table or a mathematical model. The control computer compensates for timing variations in the pulsewidth modulated signal induced by system components and environmental operating conditions.
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Hirst B. Mark
Wibbels Mark
Hewlett--Packard Company
Le N.
Pham Hai C.
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