Canon BJC-55 User Manual page 330

Turning on background printing
1
From the Apple menu, choose the Chooser.
2
Click the BJC-55 icon.
3
Click the Backgrounding button to turn it on.
If background printing has been turned on, there may not be enough
space on the disk to create temporary files for printing
Check to see if there is sufficient empty space on the hard disk of your computer.
Background printing cannot be executed if there is not enough free space available on the
hard disk of your computer. If there is not enough space available on your hard disk, secure
enough hard disk space by deleting unnecessary files.
Macintosh
Problems and Solutions
Macintosh
Troubleshooting 330