Canon Color Bubble Jet BJC-1000 Series User Manual page 68

Do not vigorously shake the cartridge while handling it.
If you are using both the BC-05 Color BJ Cartridge and any other
BJ cartridge, make sure you store the cartridge not being used in the
Ink Cartridge Storage Box.
Keep BJ cartridges in their sealed containers until you are ready to
use them.
If spilled, the ink is difficult to remove. Therefore, it's a good idea to
keep the BJ cartridges and BJ tanks out of the reach of children.
Do not touch the print head area on the BJ cartridge. Ink may leak
out and cause stains.
C
Hold the BJ cartridge on the sides only. Do not touch the area around
the print head.
4-10 Maintaining the Printer
HOLD
HERE
DO NOT TOUCH
THIS AREA
Chapter 4