From: <a rel='nofollow' href="http://skyjuiceiswater.blogspot.com/2008/09/cleaning-samsung-ml-1610-laser-printer.html">http://skyjuiceiswater.blogspot.com/2008/09/cleaning-samsung-ml-1610-laser-printer.html</a><br /> <br /> Laser Scanning Unit (LSU)<br /> <br />It is the “printer head” of the printer. Instead of emitting ink, the LSU emits a laser beam, directing it at the drum of the toner cartridge so that electrostatic charge can be transferred onto the paper to form a “temporary glue” to pick up the carbons as the paper passes through the drum.
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