Epson EPL-6200 Reference Manual page 14

When removing the developer cartridge, never touch the
developing roller under the flap; otherwise, print quality will
decline.
When handling the developer cartridge, always place it on a
clean, smooth surface.
Do not turn the developer cartridge upside down or stand it
on its ends.
Do not attempt to modify or take the developer cartridge
apart. It cannot be refilled.
Do not touch the toner and avoid all contact with your eyes.
If toner is spilled, use a broom and dustpan or a damp cloth
with soap and water to clean it up. Because the fine particles
can cause a fire or explosion if they come into contact with a
spark, do not use a vacuum cleaner.
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