Canon BJC-3000 - Manual (Page 99)

99 Setting the Printer Driver
Selecting the Media Type and Paper Size
■ Paper Size:
Set the paper size you use from within the application program, and make
sure that the paper size setting in the Page Layout tab matches the paper
size setting in the application program before printing.
When you create a document using the application program, select Page
Setup from the File menu and then specify the paper size in the Paper Size
box.
Windows
Macintosh