Canon Color Bubble Jet BJC-2000 Series User Manual page 81

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Do not remove the BJ cartridge from the printer or ship a BJ cartridge
or an ink tank from which you have removed the protective cap. An
opened BJ cartridge or BJ tank that is not installed in the printer may
leak, and the print head may dry out.
If you are shipping the printer through a shipping agent, make sure the
top of the box is clearly marked FRAGILE or HANDLE WITH CARE.
4-22 Maintaining the Printer Chapter 4