Laser driving device, optical scanning device, image forming apparatus, and laser driving method
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United States of America Patent
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Aug 19, 2014
Grant Date -
Aug 18, 2011
app pub date -
Feb 10, 2011
filing date -
Feb 18, 2010
priority date (Note) -
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Abstract
A laser driving device that drives a semiconductor laser based on a light-emitting signal includes an expansion circuit that expands a pulse width of the light-emitting signal based on a known difference between the pulse width of the light-emitting signal and a lighting pulse width of the semiconductor laser when the semiconductor laser emits light according to the light-emitting signal, and a driver that outputs a driving signal to the semiconductor laser according to an output signal of the expansion circuit.
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