Epson ActionLaser Plus User Manual page 14

Introduction
If you remove the drum, developer unit, or basket from the
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printer, always set them on a clean, smooth surface. Be sure not
to scratch or mar the roller on the developer unit or the surface
of the drum. Also avoid touching the drum, since oils from your
skin can permanently mar its surface and affect print quality.
Never try to force the printer's components into place. Although
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the printer is designed to be sturdy, rough handling can damage
the printer.
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Introduction