| 摘要 |
An apparatus for direct engraving comprises: a plurality of laser diode emitting at different wavelengths; a multiplexer (11) for collecting the plurality of laser sources into a single laser beam; a rare earth doped fiber amplifier (12) to amplify the single laser beam to form an amplified single laser beam; a demultiplexer to split the single laser beam into a plurality of amplified laser sources; and an imaging means to apply the plurality of amplified laser sources for imaging a printing plate (55).
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