Panasonic KX-FB421 Operating Instructions Manual page 12

Installation
5
Insert the gear of blue core of the front ink
film roll into the left slot of the unit (1).
Insert the rear ink film roll (2).
Gear of blue core
1
Left
slot
Front ink
film roll
6
Turn the gear of blue core in the direction of
the arrow.
Gear of blue core
12
Rear ink film roll
2
Ink film
For fax advantage assistance, call 1-800-435-7329.
L Make sure that the ink film is wrapped
around the blue core at least once.
Correct
Blue core
Incorrect
The ink film is not wrapped
around the blue core.
7
Close the printer cover by pushing down on
both sides until locked.
Note:
L The ink film is safe to touch, and will not rub
off on your hands like carbon paper.
1 turn
Tight
Slack
Reverse
Printer cover