Canon Pixma iP90 User Manual page 13

Do not shake print heads or ink
tanks.
Ink may leak out and stain clothing or
the surrounding area.
Never touch the electrical
contacts on a print head
after printing.
The metal parts may be very hot and
could cause burns.
Universal AC Adapter When you pack the universal AC
adapter for travel or storage, never
wrap the cord around the body of AC
adapter to prevent the cord from
splitting or separating from the body
of the AC adapter and causing a short
circuit.