Canon imagePROGRAF iPF6450 User Manual page 326

When Print Plug-In for Office is not displayed (Windows)
1
Click the Office button and then click the <application
name> options button.
2
From the list on the left side of the <application name> options dialog box, select Add-ins.
3
Select Disabled Items in the Manage combo box and
click the Go button.
326
iPF6450
User's Guide