Canon BJC-55 User Manual page 277

Problems and Solutions
Cannot print via the infrared port
If the print job does not start when using the infrared port, check the location of the printer
in relation to the computer or PDA. Change the location of the printer so the infrared ports
are facing one another at the correct distance and angle.
The distance and the angle between the infrared ports could differ with computer model,
the PDA capability, and the surrounding environment. Keep the distance within 3 feet
(0.8 m) and remove any object blocking the path between the infrared ports. Print data
cannot be sent or received if an object blocks the path between the infrared ports. Start the
print job again.
If you see COMn Write Error or a similar message on the screen, turn off the printer,
turn it on again, then start the print job again. The correct COM port must be selected for
the computer or PDA.
Using Infrared Data Transmission
Troubleshooting 277