Canon BJC-3000 - Manual (Page 181)

181 Troubleshooting - Printout is Unsatisfactory
Colour document printed in monochrome
Check 1 Grayscale Print selected?
Open the Printer Properties dialogue box and disable Grayscale Print in the
Main tab.
Disable Print Grayscale on the left bottom corner of the Print dialogue box.
Check 2 Monochrome printing selected in application program?
Some application programs have a setting in its print dialogue box that
allows you to enable or disable colour printing.
Check that the setting is enabled in the application program.
For details, refer to the documentation of the application program.
Windows
Macintosh