System, method and article of manufacture for improved laser direct imaging a printed circuit board utilizing a mode locked laser and scophony operation
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United States of America Patent
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May 6, 2003
Grant Date -
N/A
app pub date -
Jun 8, 2000
filing date -
Jun 8, 2000
priority date (Note) -
Expired
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Abstract
A system, method and article of manufacture is disclosed that provides an improved, higher efficiency, more accurate laser direct imaging on a photosensitive medium on a substrate using a ultraviolet, mode-locked laser having a low average power and a short pulse width. The ultraviolet, mode-locked laser is modulated in a scophony mode. The resulting in-scan edges having improved perpendicularity relative to the underlying substrate. The resulting cross scan beginning and end having improved perpendicularity relative to the underlying substrate. The improved perpendicularity resulting in improved accuracy over the prior art.
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