Laser exposing apparatus

Details Laser exposing apparatus Laser exposing apparatus

2006-05-09

2006-05-09

Pham, Hai (Department: 2861)

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Light or beam marking apparatus or processes

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C347S248000

Reexamination Certificate

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07042481

ABSTRACT:
A laser exposing apparatus has a first laser source emitting a first laser beam, a second laser source emitting a second laser beam shorter in wavelength than the first laser beam, and an optical device for directing the first laser beam and the second laser beam to a photosensitive member. The second laser beam has a longer optical path length to the photosensitive member than the first laser beam.

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patent: 6798820 (2004-09-01), Okuwaki et al.
patent: 2001/0050933 (2001-12-01), Takahashi et al.
patent: 2002/0097659 (2002-07-01), Furuhata et al.
patent: 1 134 966 (2001-09-01), None

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