Canon PIXM MX300 Series User Manual page 215

Caution
Do not transport or store the machine slanted, vertically, or upside-down,
as the ink may leak and damage the machine.
Shipping the Machine
Before shipping the machine by a delivery service:
Tape the lid of the box securely with strong tape.
Clearly label the box as "FRAGILE" or "HANDLE WITH CARE."
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